Re: [PATCH V6 XDMA 0/2] xilinx XDMA driver
From: Martin Tůma
Date: Thu Oct 06 2022 - 12:37:14 EST
On 04. 10. 22 23:43, Lizhi Hou wrote:
Hello,
This V6 of patch series is to provide the platform driver to support the
Xilinx XDMA subsystem. The XDMA subsystem is used in conjunction with the
PCI Express IP block to provide high performance data transfer between host
memory and the card's DMA subsystem. It also provides up to 16 user
interrupt wires to user logic that generate interrupts to the host.
+-------+ +-------+ +-----------+
PCIe | | | | | |
Tx/Rx | | | | AXI | |
<=======> | PCIE | <===> | XDMA | <====>| User Logic|
| | | | | |
+-------+ +-------+ +-----------+
The XDMA has been used for Xilinx Alveo PCIe devices.
And it is also integrated into Versal ACAP DMA and Bridge Subsystem.
https://www.xilinx.com/products/boards-and-kits/alveo.html
https://docs.xilinx.com/r/en-US/pg344-pcie-dma-versal/Introduction-to-the-DMA-and-Bridge-Subsystems
The device driver for any FPGA based PCIe device which leverages XDMA can
call the standard dmaengine APIs to discover and use the XDMA subsystem
without duplicating the XDMA driver code in its own driver.
Changes since v5:
- Modified user logic interrupt APIs to handle user logic IP which does not
have its own register to enable/disable interrupt.
- Clean up code based on review comments.
Changes since v4:
- Modified user logic interrupt APIs.
Changes since v3:
- Added one patch to support user logic interrupt.
Changes since v2:
- Removed tasklet.
- Fixed regression bug introduced to V2.
- Test Robot warning.
Changes since v1:
- Moved filling hardware descriptor to xdma_prep_device_sg().
- Changed hardware descriptor enum to "struct xdma_hw_desc".
- Minor changes from code review comments.
Lizhi Hou (2):
dmaengine: xilinx: xdma: Add xilinx xdma driver
dmaengine: xilinx: xdma: Add user logic interrupt support
MAINTAINERS | 11 +
drivers/dma/Kconfig | 13 +
drivers/dma/xilinx/Makefile | 1 +
drivers/dma/xilinx/xdma-regs.h | 171 ++++
drivers/dma/xilinx/xdma.c | 1034 ++++++++++++++++++++++++
include/linux/dma/amd_xdma.h | 16 +
include/linux/platform_data/amd_xdma.h | 34 +
7 files changed, 1280 insertions(+)
create mode 100644 drivers/dma/xilinx/xdma-regs.h
create mode 100644 drivers/dma/xilinx/xdma.c
create mode 100644 include/linux/dma/amd_xdma.h
create mode 100644 include/linux/platform_data/amd_xdma.h
Hi,
I have rewritten our V4L2 driver to use this new XDMA driver, but it
does not work on our HW (where the previous Xilinx XDMA driver derived
from the Xilinx sample code worked fine). The driver is sucessfully
loaded and 4(2+2) DMA channels are successfully created. But when a DMA
transfer is initiated, I get an error from my PC's DMA chip:
AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000a address=0x36a00000
flags=0x0000]
and no error from XDMA.
Does the driver expect some special FPGA IP core configuration? Or is
there something else I'm missing? My code is quiet similar to what you
use in your XRT repo on GitHub (there is btw. a bug in the XRT code -
you do not clear the dma_slave_config struct before using) but in my
case the DMA transfer triggers the AMD-Vi error and timeouts.
The code of our driver is attached, the relevant parts are in mgb4_dma.c
and mgb4_core.c.
M.diff --git a/drivers/media/pci/Kconfig b/drivers/media/pci/Kconfig
index 1224d908713a..e3f9d0d4e4cc 100644
--- a/drivers/media/pci/Kconfig
+++ b/drivers/media/pci/Kconfig
@@ -13,6 +13,7 @@ if MEDIA_PCI_SUPPORT
if MEDIA_CAMERA_SUPPORT
comment "Media capture support"
+source "drivers/media/pci/mgb4/Kconfig"
source "drivers/media/pci/meye/Kconfig"
source "drivers/media/pci/solo6x10/Kconfig"
source "drivers/media/pci/sta2x11/Kconfig"
diff --git a/drivers/media/pci/Makefile b/drivers/media/pci/Makefile
index 551169a3e434..8ca819cf3cc1 100644
--- a/drivers/media/pci/Makefile
+++ b/drivers/media/pci/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_VIDEO_CX88) += cx88/
obj-$(CONFIG_VIDEO_DT3155) += dt3155/
obj-$(CONFIG_VIDEO_IVTV) += ivtv/
obj-$(CONFIG_VIDEO_MEYE) += meye/
+obj-$(CONFIG_VIDEO_MGB4) += mgb4/
obj-$(CONFIG_VIDEO_SAA7134) += saa7134/
obj-$(CONFIG_VIDEO_SAA7164) += saa7164/
obj-$(CONFIG_VIDEO_SOLO6X10) += solo6x10/
diff --git a/drivers/media/pci/mgb4/Kconfig b/drivers/media/pci/mgb4/Kconfig
new file mode 100644
index 000000000000..13fad15a434c
--- /dev/null
+++ b/drivers/media/pci/mgb4/Kconfig
@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_MGB4
+ tristate "Digiteq Automotive MGB4 support"
+ depends on VIDEO_DEV && PCI && I2C && DMADEVICES && SPI && MTD && IIO
+ select VIDEOBUF2_DMA_SG
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ select I2C_XILINX
+ select SPI_XILINX
+ select MTD_SPI_NOR
+ select XILINX_XDMA
+ help
+ This is a video4linux driver for Digiteq Automotive MGB4 grabber
+ cards.
+
+ To compile this driver as a module, choose M here: the
+ module will be called mgb4.
diff --git a/drivers/media/pci/mgb4/Makefile b/drivers/media/pci/mgb4/Makefile
new file mode 100644
index 000000000000..e92ead18bed0
--- /dev/null
+++ b/drivers/media/pci/mgb4/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+mgb4-objs := mgb4_regs.o mgb4_core.o mgb4_vin.o mgb4_vout.o \
+ mgb4_sysfs_pci.o mgb4_sysfs_in.o mgb4_sysfs_out.o \
+ mgb4_i2c.o mgb4_cmt.o mgb4_trigger.o mgb4_dma.o
+
+obj-$(CONFIG_VIDEO_MGB4) += mgb4.o
diff --git a/drivers/media/pci/mgb4/mgb4_cmt.c b/drivers/media/pci/mgb4/mgb4_cmt.c
new file mode 100644
index 000000000000..3ec394e46bd0
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_cmt.c
@@ -0,0 +1,243 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include "mgb4_core.h"
+#include "mgb4_cmt.h"
+
+static const uint16_t cmt_vals_out[][15] = {
+ {0x1208, 0x0000, 0x171C, 0x0000, 0x1E38, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, },
+ {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, },
+ {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x124A, 0x0080, 0x0041, 0x010D, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1209, 0x0080, 0x0041, 0x013F, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x1100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1105, 0x0080, 0x1041, 0x01E8, 0x6401, 0x65E9, 0xFFFF, 0x9800, 0x1100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x00C4, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x138E, 0x0000, 0x0042, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175E, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x165A, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+ {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x171D, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1146, 0x0080, 0x1041, 0x0184, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1104, 0x0000, 0x1041, 0x01E8, 0x5801, 0x59E9, 0xFFFF, 0x9900, 0x0900, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1659, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1555, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0082, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1514, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1618, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1411, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1597, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x12CC, 0x0080, 0x0041, 0x00A9, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175E, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1492, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, },
+ {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, },
+};
+
+static const uint16_t cmt_vals_in[][13] = {
+ {0x1082, 0x0000, 0x5104, 0x0000, 0x11C7, 0x0000, 0x1041, 0x02BC, 0x7C01, 0xFFE9, 0x9900, 0x9908, 0x8100},
+ {0x1104, 0x0000, 0x9208, 0x0000, 0x138E, 0x0000, 0x1041, 0x015E, 0x7C01, 0xFFE9, 0x0100, 0x0908, 0x1000},
+};
+
+static const uint32_t cmt_addrs_out[][15] = {
+ {0x420, 0x424, 0x428, 0x42C, 0x430, 0x434, 0x450, 0x454, 0x458, 0x460, 0x464, 0x468, 0x4A0, 0x538, 0x53C},
+ {0x620, 0x624, 0x628, 0x62C, 0x630, 0x634, 0x650, 0x654, 0x658, 0x660, 0x664, 0x668, 0x6A0, 0x738, 0x73C},
+};
+
+static const uint32_t cmt_addrs_in[][13] = {
+ {0x020, 0x024, 0x028, 0x02C, 0x050, 0x054, 0x058, 0x060, 0x064, 0x068, 0x0A0, 0x138, 0x13C},
+ {0x220, 0x224, 0x228, 0x22C, 0x250, 0x254, 0x258, 0x260, 0x264, 0x268, 0x2A0, 0x338, 0x33C},
+};
+
+static const uint32_t cmt_freq[] = {
+ 25000, 25510, 26020, 26530, 26983, 27551, 28000, 28570,
+ 29046, 29522, 30000, 30476, 30952, 31546, 32000, 32539,
+ 33035, 33571, 33928, 34522, 35000, 35428, 36000, 36571,
+ 36904, 37500, 38093, 38571, 39047, 39453, 40000, 40476,
+ 40952, 41494, 41964, 42857, 43535, 44047, 44444, 45000,
+ 45535, 46029, 46428, 46823, 47617, 48214, 48571, 49107,
+ 49523, 50000, 50476, 50892, 51428, 52380, 53333, 53967,
+ 54285, 55238, 55555, 55952, 57142, 58095, 58571, 59047,
+ 59521, 60000, 60316, 60952, 61428, 61904, 62500, 63092,
+ 63491, 64282, 65078, 65476, 66071, 66664, 67142, 67854,
+ 68571, 69044, 69642, 70000, 71425, 72616, 73214, 73808,
+ 74285, 75000, 75714, 76187, 76785, 77142, 78570, 80000,
+ 80357, 80951, 81428, 82142, 82857, 83332, 83928, 84285,
+ 85713, 87142, 87500, 88094, 88571, 89285, 90000, 90475,
+ 91071, 91428, 92856, 94642,
+};
+
+
+static size_t freq_srch(u32 key, const u32 *array, size_t size)
+{
+ int l = 0;
+ int r = size - 1;
+ int m;
+
+ while (l <= r) {
+ m = (l + r) / 2;
+ if (array[m] < key)
+ l = m + 1;
+ else if (array[m] > key)
+ r = m - 1;
+ else
+ return m;
+ }
+
+ if (r < 0 || l > size - 1)
+ return m;
+ else
+ return (abs(key - array[l]) < abs(key - array[r])) ? l : r;
+}
+
+
+u32 mgb4_cmt_set_vout(struct mgb4_vout_dev *voutdev, unsigned int freq)
+{
+ const uint16_t *reg_set;
+ const uint32_t *addr;
+ u32 config;
+ size_t i, index;
+
+ index = freq_srch(freq, cmt_freq, ARRAY_SIZE(cmt_freq));
+ addr = cmt_addrs_out[voutdev->config->id];
+ reg_set = cmt_vals_out[index];
+
+ config = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.config);
+
+ mgb4_write_reg(&voutdev->mgbdev->video, voutdev->config->regs.config,
+ 0x1 | (config & ~0x3));
+
+ for (i = 0; i < ARRAY_SIZE(cmt_addrs_out[0]); i++)
+ mgb4_write_reg(&voutdev->mgbdev->cmt, addr[i], reg_set[i]);
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config,
+ 0x100, 0x100);
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config,
+ 0x100, 0x0);
+
+ mgb4_write_reg(&voutdev->mgbdev->video, voutdev->config->regs.config,
+ config & ~0x1);
+
+ return cmt_freq[index];
+}
+
+void mgb4_cmt_set_vin(struct mgb4_vin_dev *vindev, unsigned int freq_range)
+{
+ const uint16_t *reg_set;
+ const uint32_t *addr;
+ u32 config;
+ size_t i;
+
+ addr = cmt_addrs_in[vindev->config->id];
+ reg_set = cmt_vals_in[freq_range];
+
+ config = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.config);
+
+ mgb4_write_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ 0x1 | (config & ~0x3));
+
+ for (i = 0; i < ARRAY_SIZE(cmt_addrs_in[0]); i++)
+ mgb4_write_reg(&vindev->mgbdev->cmt, addr[i], reg_set[i]);
+
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ 0x1000, 0x1000);
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ 0x1000, 0x0);
+
+ mgb4_write_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ config & ~0x1);
+}
diff --git a/drivers/media/pci/mgb4/mgb4_cmt.h b/drivers/media/pci/mgb4/mgb4_cmt.h
new file mode 100644
index 000000000000..353966654c95
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_cmt.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_CMT_H__
+#define __MGB4_CMT_H__
+
+#include "mgb4_vout.h"
+#include "mgb4_vin.h"
+
+u32 mgb4_cmt_set_vout(struct mgb4_vout_dev *voutdev, unsigned int freq);
+void mgb4_cmt_set_vin(struct mgb4_vin_dev *vindev, unsigned int freq_range);
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c
new file mode 100644
index 000000000000..c09882c1525b
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_core.c
@@ -0,0 +1,656 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This is the driver for the MGB4 video grabber card by Digiteq Automotive.
+ *
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/dma/amd_xdma.h>
+#include <linux/platform_data/amd_xdma.h>
+#include <linux/spi/xilinx_spi.h>
+#include <linux/mtd/mtd.h>
+#include "mgb4_dma.h"
+#include "mgb4_i2c.h"
+#include "mgb4_sysfs.h"
+#include "mgb4_vout.h"
+#include "mgb4_vin.h"
+#include "mgb4_trigger.h"
+#include "mgb4_core.h"
+
+
+#define MGB4_USER_IRQS 16
+
+static int flashid;
+
+static struct xdma_chan_info h2c_chan_info = {
+ .dir = DMA_MEM_TO_DEV,
+};
+
+static struct xdma_chan_info c2h_chan_info = {
+ .dir = DMA_DEV_TO_MEM,
+};
+
+static struct xspi_platform_data spi_platform_data = {
+ .num_chipselect = 1,
+ .bits_per_word = 8
+};
+
+static const struct i2c_board_info extender_info = {
+ I2C_BOARD_INFO("extender", 0x21)
+};
+
+static int match_i2c_adap(struct device *dev, void *data)
+{
+ return (i2c_verify_adapter(dev) != NULL);
+}
+
+static struct i2c_adapter *get_i2c_adap(struct platform_device *pdev)
+{
+ struct device *dev;
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ msleep(100);
+ mutex_lock(&pdev->dev.mutex);
+ dev = device_find_child(&pdev->dev, NULL, match_i2c_adap);
+ mutex_unlock(&pdev->dev.mutex);
+ if (dev)
+ return to_i2c_adapter(dev);
+ }
+
+ return NULL;
+}
+
+static int match_spi_adap(struct device *dev, void *data)
+{
+ return (to_spi_device(dev) != NULL);
+}
+
+static struct spi_master *get_spi_adap(struct platform_device *pdev)
+{
+ struct device *dev;
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ msleep(100);
+ mutex_lock(&pdev->dev.mutex);
+ dev = device_find_child(&pdev->dev, NULL, match_spi_adap);
+ mutex_unlock(&pdev->dev.mutex);
+ if (dev)
+ return container_of(dev, struct spi_master, dev);
+ }
+
+ return NULL;
+}
+
+static int init_spi(struct mgb4_dev *mgbdev)
+{
+ struct resource spi_resources[] = {
+ {
+ .start = 0x400,
+ .end = 0x47f,
+ .flags = IORESOURCE_MEM,
+ .name = "io-memory",
+ },
+ {
+ .start = 14,
+ .end = 14,
+ .flags = IORESOURCE_IRQ,
+ .name = "irq",
+ },
+ };
+ struct spi_board_info spi_info = {
+ .max_speed_hz = 10000000,
+ .modalias = "m25p80",
+ .chip_select = 0,
+ .mode = SPI_MODE_3,
+ };
+ struct pci_dev *pdev = mgbdev->pdev;
+ struct device *dev = &pdev->dev;
+ struct spi_master *master;
+ struct spi_device *spi_dev;
+ u32 irq;
+ int rv, id;
+ resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID);
+
+ irq = xdma_get_user_irq(mgbdev->xdev, 14);
+ xdma_enable_user_irq(mgbdev->xdev, irq);
+
+ spi_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID];
+ spi_resources[0].start += mapbase;
+ spi_resources[0].end += mapbase;
+ spi_resources[1].start = irq;
+ spi_resources[1].end = irq;
+
+ id = pci_dev_id(pdev);
+ mgbdev->spi_pdev = platform_device_register_resndata(dev, "xilinx_spi",
+ id, spi_resources, ARRAY_SIZE(spi_resources), &spi_platform_data,
+ sizeof(spi_platform_data));
+ if (IS_ERR(mgbdev->spi_pdev)) {
+ dev_err(dev, "failed to register SPI device\n");
+ return PTR_ERR(mgbdev->spi_pdev);
+ }
+
+ master = get_spi_adap(mgbdev->spi_pdev);
+ if (!master) {
+ dev_err(dev, "failed to get SPI adapter\n");
+ rv = -EINVAL;
+ goto err_pdev;
+ }
+
+ snprintf(mgbdev->fw_part_name, sizeof(mgbdev->fw_part_name), "mgb4-fw.%d",
+ flashid);
+ mgbdev->partitions[0].name = mgbdev->fw_part_name;
+ mgbdev->partitions[0].size = 0x400000;
+ mgbdev->partitions[0].offset = 0x400000;
+ mgbdev->partitions[0].mask_flags = 0;
+
+ snprintf(mgbdev->data_part_name, sizeof(mgbdev->data_part_name),
+ "mgb4-data.%d", flashid);
+ mgbdev->partitions[1].name = mgbdev->data_part_name;
+ mgbdev->partitions[1].size = 0x10000;
+ mgbdev->partitions[1].offset = 0xFF0000;
+ mgbdev->partitions[1].mask_flags = MTD_CAP_NORFLASH;
+
+ snprintf(mgbdev->flash_name, sizeof(mgbdev->flash_name), "mgb4-flash.%d",
+ flashid);
+ mgbdev->flash_data.name = mgbdev->flash_name;
+ mgbdev->flash_data.parts = mgbdev->partitions;
+ mgbdev->flash_data.nr_parts = ARRAY_SIZE(mgbdev->partitions);
+ mgbdev->flash_data.type = "spi-nor";
+
+ spi_info.platform_data = &(mgbdev->flash_data);
+
+ spi_dev = spi_new_device(master, &spi_info);
+ put_device(&master->dev);
+ if (!spi_dev) {
+ dev_err(dev, "failed to create MTD device\n");
+ rv = -EINVAL;
+ goto err_pdev;
+ }
+
+ return 0;
+
+err_pdev:
+ platform_device_unregister(mgbdev->spi_pdev);
+
+ return rv;
+}
+
+static void free_spi(struct mgb4_dev *mgbdev)
+{
+ platform_device_unregister(mgbdev->spi_pdev);
+}
+
+static int init_i2c(struct mgb4_dev *mgbdev)
+{
+ struct resource i2c_resources[] = {
+ {
+ .start = 0x200,
+ .end = 0x3ff,
+ .flags = IORESOURCE_MEM,
+ .name = "io-memory",
+ },
+ {
+ .start = 15,
+ .end = 15,
+ .flags = IORESOURCE_IRQ,
+ .name = "irq",
+ },
+ };
+ struct pci_dev *pdev = mgbdev->pdev;
+ struct device *dev = &pdev->dev;
+ char clk_name[16];
+ u32 irq;
+ int rv, id;
+ resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID);
+
+ irq = xdma_get_user_irq(mgbdev->xdev, 15);
+ xdma_enable_user_irq(mgbdev->xdev, irq);
+
+ i2c_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID];
+ i2c_resources[0].start += mapbase;
+ i2c_resources[0].end += mapbase;
+ i2c_resources[1].start = irq;
+ i2c_resources[1].end = irq;
+
+ id = pci_dev_id(pdev);
+
+ // create dummy clock required by the xiic-i2c adapter
+ snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id);
+ mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL, 0, 125000000);
+ if (IS_ERR(mgbdev->i2c_clk)) {
+ dev_err(dev, "failed to register I2C clock\n");
+ return PTR_ERR(mgbdev->i2c_clk);
+ }
+ mgbdev->i2c_cl = clkdev_hw_create(mgbdev->i2c_clk, NULL, "xiic-i2c.%d", id);
+ if (!mgbdev->i2c_cl) {
+ dev_err(dev, "failed to register I2C clockdev\n");
+ rv = -ENOMEM;
+ goto err_clk;
+ }
+
+ mgbdev->i2c_pdev = platform_device_register_resndata(dev, "xiic-i2c",
+ id, i2c_resources, ARRAY_SIZE(i2c_resources), NULL, 0);
+ if (IS_ERR(mgbdev->i2c_pdev)) {
+ dev_err(dev, "failed to register I2C device\n");
+ rv = PTR_ERR(mgbdev->i2c_pdev);
+ goto err_clkdev;
+ }
+
+ mgbdev->i2c_adap = get_i2c_adap(mgbdev->i2c_pdev);
+ if (!mgbdev->i2c_adap) {
+ dev_err(dev, "failed to get I2C adapter\n");
+ rv = -EINVAL;
+ goto err_pdev;
+ }
+
+ mutex_init(&mgbdev->i2c_lock);
+
+ return 0;
+
+err_pdev:
+ platform_device_unregister(mgbdev->i2c_pdev);
+err_clkdev:
+ clkdev_drop(mgbdev->i2c_cl);
+err_clk:
+ clk_hw_unregister(mgbdev->i2c_clk);
+
+ return rv;
+}
+
+static void free_i2c(struct mgb4_dev *mgbdev)
+{
+ put_device(&mgbdev->i2c_adap->dev);
+ platform_device_unregister(mgbdev->i2c_pdev);
+ clkdev_drop(mgbdev->i2c_cl);
+ clk_hw_unregister(mgbdev->i2c_clk);
+}
+
+static int init_sysfs(struct pci_dev *pdev)
+{
+ struct device_attribute **attr, **eattr;
+ int rv;
+
+ for (attr = mgb4_pci_attrs; *attr; attr++) {
+ rv = device_create_file(&pdev->dev, *attr);
+ if (rv < 0)
+ goto err_file;
+ }
+
+ return 0;
+
+err_file:
+ for (eattr = mgb4_pci_attrs; eattr != attr; eattr++)
+ device_remove_file(&pdev->dev, *eattr);
+
+ return rv;
+}
+
+static void free_sysfs(struct pci_dev *pdev)
+{
+ struct device_attribute **attr;
+
+ for (attr = mgb4_pci_attrs; *attr; attr++)
+ device_remove_file(&pdev->dev, *attr);
+}
+
+static int get_serial_number(struct mgb4_dev *mgbdev)
+{
+ struct device *dev = &mgbdev->pdev->dev;
+ struct mtd_info *mtd;
+ size_t rs;
+ int rv;
+
+ mgbdev->serial_number = 0;
+
+ mtd = get_mtd_device_nm(mgbdev->data_part_name);
+ if (IS_ERR(mtd)) {
+ dev_warn(dev, "failed to get data MTD device\n");
+ return -ENOENT;
+ }
+ rv = mtd_read(mtd, 0, sizeof(mgbdev->serial_number), &rs,
+ (u_char *)&mgbdev->serial_number);
+ put_mtd_device(mtd);
+ if (rv < 0 || rs != sizeof(mgbdev->serial_number)) {
+ dev_warn(dev, "error reading MTD device\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int get_module_version(struct mgb4_dev *mgbdev)
+{
+ struct device *dev = &mgbdev->pdev->dev;
+ struct mgb4_i2c_client extender;
+ s32 version;
+ u32 fw_version;
+ int rv;
+
+ rv = mgb4_i2c_init(&extender, mgbdev->i2c_adap, &extender_info, 8);
+ if (rv < 0) {
+ dev_err(dev, "failed to create extender I2C device\n");
+ return rv;
+ }
+ version = mgb4_i2c_read_byte(&extender, 0x00);
+ mgb4_i2c_free(&extender);
+ if (version < 0) {
+ dev_err(dev, "error reading module version\n");
+ return -EIO;
+ }
+
+ mgbdev->module_version = ~((u32)version) & 0xff;
+ if (!(MGB4_IS_FPDL3(mgbdev) || MGB4_IS_GMSL(mgbdev))) {
+ dev_err(dev, "unknown module type\n");
+ return -EINVAL;
+ }
+ fw_version = mgb4_read_reg(&mgbdev->video, 0xC4);
+ if (fw_version >> 24 != mgbdev->module_version >> 4) {
+ dev_err(dev, "module/firmware type mismatch\n");
+ return -EINVAL;
+ }
+
+ dev_info(dev, "%s module detected\n",
+ MGB4_IS_FPDL3(mgbdev) ? "FPDL3" : "GMSL");
+
+ return 0;
+}
+
+static int map_regs(struct pci_dev *pdev, struct resource *res,
+ struct mgb4_regs *regs)
+{
+ int rv;
+ resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID);
+
+ res->start += mapbase;
+ res->end += mapbase;
+
+ rv = mgb4_regs_map(res, regs);
+ if (rv < 0) {
+ dev_err(&pdev->dev, "failed to map %s registers\n", res->name);
+ return rv;
+ }
+
+ return 0;
+}
+
+static int init_xdma(struct mgb4_dev *mgbdev)
+{
+ struct xdma_platdata data;
+ struct resource res[2] = { 0 };
+ struct dma_slave_map *map;
+ struct pci_dev *pdev = mgbdev->pdev;
+ struct device *dev = &pdev->dev;
+ int i, ret;
+
+ mgbdev->xdev = platform_device_alloc("xdma", PLATFORM_DEVID_AUTO);
+ if (!mgbdev->xdev)
+ return -ENOMEM;
+
+ mgbdev->xdev->dev.parent = dev;
+
+ res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID);
+ res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID);
+ res[0].flags = IORESOURCE_MEM;
+ res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID];
+ res[1].start = pci_irq_vector(pdev, 0);
+ res[1].end = res[1].start + MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES
+ + MGB4_USER_IRQS - 1;
+ res[1].flags = IORESOURCE_IRQ;
+ ret = platform_device_add_resources(mgbdev->xdev, res, 2);
+ if (ret) {
+ dev_err(dev, "failed to add xdma resources: %d", ret);
+ goto failed;
+ }
+
+ data.max_dma_channels = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES;
+ data.device_map = mgbdev->slave_map;
+ data.device_map_cnt = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES;
+
+ for (i = 0; i < MGB4_VIN_DEVICES; i++) {
+ map = &data.device_map[i];
+ map->devname = dev_name(dev);
+ map->slave = kasprintf(GFP_KERNEL, "c2h%d", i);
+ if (!map->slave)
+ goto failed;
+ map->param = XDMA_FILTER_PARAM(&c2h_chan_info);
+ }
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++) {
+ map = &data.device_map[i + MGB4_VIN_DEVICES];
+ map->devname = dev_name(dev);
+ map->slave = kasprintf(GFP_KERNEL, "h2c%d", i);
+ if (!map->slave)
+ goto failed;
+ map->param = XDMA_FILTER_PARAM(&h2c_chan_info);
+ }
+
+ ret = platform_device_add_data(mgbdev->xdev, &data, sizeof(data));
+ if (ret) {
+ dev_err(dev, "failed to add xdma data: %d", ret);
+ goto failed;
+ }
+
+ ret = platform_device_add(mgbdev->xdev);
+ if (ret) {
+ dev_err(dev, "faied to add xdma dev: %d", ret);
+ goto failed;
+ }
+
+ return 0;
+
+failed:
+ platform_device_put(mgbdev->xdev);
+
+ return ret;
+}
+
+static void free_xdma(struct mgb4_dev *mgbdev)
+{
+ int i;
+
+ platform_device_unregister(mgbdev->xdev);
+
+ for (i = 0; i < MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; i++)
+ kfree(mgbdev->slave_map[i].slave);
+}
+
+static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ int i, rv;
+ struct mgb4_dev *mgbdev;
+ struct resource video = {
+ .start = 0x0,
+ .end = 0x100,
+ .flags = IORESOURCE_MEM,
+ .name = "mgb4-video",
+ };
+ struct resource cmt = {
+ .start = 0x1000,
+ .end = 0x1800,
+ .flags = IORESOURCE_MEM,
+ .name = "mgb4-cmt",
+ };
+ int irqs = pci_msix_vec_count(pdev);
+
+
+ mgbdev = kzalloc(sizeof(*mgbdev), GFP_KERNEL);
+ if (!mgbdev)
+ return -ENOMEM;
+
+ mgbdev->pdev = pdev;
+ pci_set_drvdata(pdev, mgbdev);
+
+ /* PCIe related stuff */
+ rv = pci_enable_device(pdev);
+ if (rv) {
+ dev_err(&pdev->dev, "error enabling PCI device\n");
+ goto err_mgbdev;
+ }
+
+ rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
+ if (rv)
+ dev_warn(&pdev->dev, "error enabling PCIe relaxed ordering\n");
+ rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG);
+ if (rv)
+ dev_warn(&pdev->dev, "error enabling PCIe extended tag field\n");
+ rv = pcie_set_readrq(pdev, 512);
+ if (rv)
+ dev_warn(&pdev->dev, "error setting PCIe max. memory read size\n");
+ pci_set_master(pdev);
+
+ rv = pci_alloc_irq_vectors(pdev, irqs, irqs, PCI_IRQ_MSIX);
+ if (rv < 0) {
+ dev_err(&pdev->dev, "error allocating MSI-X IRQs\n");
+ goto err_enable_pci;
+ }
+
+ rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+ if (rv) {
+ dev_err(&pdev->dev, "error setting DMA mask\n");
+ goto err_enable_pci;
+ }
+
+ /* DMA + IRQ engine */
+ rv = init_xdma(mgbdev);
+ if (rv)
+ goto err_alloc_irq;
+ rv = mgb4_dma_channel_init(mgbdev);
+ if (rv)
+ goto err_dma_chan;
+
+ /* mgb4 video registers */
+ rv = map_regs(pdev, &video, &mgbdev->video);
+ if (rv < 0)
+ goto err_dma_chan;
+ /* mgb4 cmt registers */
+ rv = map_regs(pdev, &cmt, &mgbdev->cmt);
+ if (rv < 0)
+ goto err_video_regs;
+
+ /* SPI FLASH */
+ rv = init_spi(mgbdev);
+ if (rv < 0)
+ goto err_cmt_regs;
+
+ /* I2C controller */
+ rv = init_i2c(mgbdev);
+ if (rv < 0)
+ goto err_spi;
+
+ /* PCI card related sysfs attributes */
+ rv = init_sysfs(pdev);
+ if (rv < 0)
+ goto err_i2c;
+
+ /* Get card serial number. On systems without MTD flash support we may
+ * get an error thus ignore the return value. An invalid serial number
+ * should not break anything...
+ */
+ if (get_serial_number(mgbdev) < 0)
+ dev_warn(&pdev->dev, "error reading card serial number\n");
+
+ /* Get module type. If no valid module is found, skip the video device
+ * creation part but do not exit with error to allow flashing the card.
+ */
+ rv = get_module_version(mgbdev);
+ if (rv < 0)
+ goto exit;
+
+ /* Video input v4l2 devices */
+ for (i = 0; i < MGB4_VIN_DEVICES; i++)
+ mgbdev->vin[i] = mgb4_vin_create(mgbdev, i);
+
+ /* Video output v4l2 devices */
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+ mgbdev->vout[i] = mgb4_vout_create(mgbdev, i);
+
+ /* Triggers */
+ mgbdev->indio_dev = mgb4_trigger_create(mgbdev);
+
+exit:
+ flashid++;
+
+ return 0;
+
+err_i2c:
+ free_i2c(mgbdev);
+err_spi:
+ free_spi(mgbdev);
+err_cmt_regs:
+ mgb4_regs_free(&mgbdev->cmt);
+err_video_regs:
+ mgb4_regs_free(&mgbdev->video);
+err_dma_chan:
+ mgb4_dma_channel_free(mgbdev);
+ free_xdma(mgbdev);
+err_alloc_irq:
+ pci_disable_msix(pdev);
+err_enable_pci:
+ pci_disable_device(pdev);
+err_mgbdev:
+ kfree(mgbdev);
+
+ return rv;
+}
+
+static void mgb4_remove(struct pci_dev *pdev)
+{
+ struct mgb4_dev *mgbdev = pci_get_drvdata(pdev);
+ int i;
+
+ if (mgbdev->indio_dev)
+ mgb4_trigger_free(mgbdev->indio_dev);
+
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+ if (mgbdev->vout[i])
+ mgb4_vout_free(mgbdev->vout[i]);
+ for (i = 0; i < MGB4_VIN_DEVICES; i++)
+ if (mgbdev->vin[i])
+ mgb4_vin_free(mgbdev->vin[i]);
+
+ free_sysfs(mgbdev->pdev);
+ free_spi(mgbdev);
+ free_i2c(mgbdev);
+ mgb4_regs_free(&mgbdev->video);
+ mgb4_regs_free(&mgbdev->cmt);
+
+ mgb4_dma_channel_free(mgbdev);
+ free_xdma(mgbdev);
+
+ pci_disable_msix(mgbdev->pdev);
+ pci_disable_device(mgbdev->pdev);
+
+ kfree(mgbdev);
+}
+
+static const struct pci_device_id mgb4_pci_ids[] = {
+ { PCI_DEVICE(0x1ed8, 0x0101), },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, mgb4_pci_ids);
+
+static struct pci_driver mgb4_pci_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = mgb4_pci_ids,
+ .probe = mgb4_probe,
+ .remove = mgb4_remove,
+};
+
+module_pci_driver(mgb4_pci_driver);
+
+MODULE_AUTHOR("Digiteq Automotive s.r.o.");
+MODULE_DESCRIPTION("Digiteq Automotive MGB4 Driver");
+MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: platform:xiic-i2c platform:xilinx_spi spi-nor");
diff --git a/drivers/media/pci/mgb4/mgb4_core.h b/drivers/media/pci/mgb4/mgb4_core.h
new file mode 100644
index 000000000000..2d161c3dbe7c
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_core.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_CORE_H__
+#define __MGB4_CORE_H__
+
+#include <linux/spi/flash.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mutex.h>
+#include <linux/dmaengine.h>
+#include "mgb4_regs.h"
+
+#define MGB4_VIN_DEVICES 2
+#define MGB4_VOUT_DEVICES 2
+
+#define MGB4_MGB4_BAR_ID 0
+#define MGB4_XDMA_BAR_ID 1
+
+#define MGB4_IS_GMSL(mgbdev) \
+ ((mgbdev)->module_version >> 4 == 2)
+#define MGB4_IS_FPDL3(mgbdev) \
+ ((mgbdev)->module_version >> 4 == 1)
+
+struct mgb4_dma_channel {
+ struct dma_chan *chan;
+ dma_cookie_t dma_cookie;
+ struct completion req_compl;
+};
+
+struct mgb4_dev {
+ struct pci_dev *pdev;
+ struct platform_device *xdev;
+ struct mgb4_vin_dev *vin[MGB4_VIN_DEVICES];
+ struct mgb4_vout_dev *vout[MGB4_VOUT_DEVICES];
+
+ struct mgb4_dma_channel c2h_chan[MGB4_VIN_DEVICES];
+ struct mgb4_dma_channel h2c_chan[MGB4_VOUT_DEVICES];
+ struct dma_slave_map slave_map[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES];
+
+ struct mgb4_regs video;
+ struct mgb4_regs cmt;
+
+ struct clk_hw *i2c_clk;
+ struct clk_lookup *i2c_cl;
+ struct platform_device *i2c_pdev;
+ struct i2c_adapter *i2c_adap;
+ struct mutex i2c_lock;
+
+ struct platform_device *spi_pdev;
+ struct flash_platform_data flash_data;
+ char flash_name[16];
+ struct mtd_partition partitions[2];
+ char fw_part_name[16];
+ char data_part_name[16];
+
+ struct iio_dev *indio_dev;
+
+ u8 module_version;
+ u32 serial_number;
+};
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_dma.c b/drivers/media/pci/mgb4/mgb4_dma.c
new file mode 100644
index 000000000000..95a41c09dbf4
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_dma.c
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/pci.h>
+#include <linux/dma-direction.h>
+#include "mgb4_core.h"
+#include "mgb4_dma.h"
+
+static void chan_irq(void *param)
+{
+ struct mgb4_dma_channel *chan = param;
+
+ complete(&chan->req_compl);
+}
+
+int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write,
+ u64 paddr, struct sg_table *sgt)
+{
+ struct dma_slave_config cfg;
+ struct mgb4_dma_channel *chan;
+ struct dma_async_tx_descriptor *tx;
+ struct pci_dev *pdev = mgbdev->pdev;
+ int ret;
+
+ memset(&cfg, 0, sizeof(cfg));
+
+ if (write) {
+ cfg.direction = DMA_MEM_TO_DEV;
+ cfg.dst_addr = paddr;
+ cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ chan = &mgbdev->h2c_chan[channel];
+ } else {
+ cfg.direction = DMA_DEV_TO_MEM;
+ cfg.src_addr = paddr;
+ cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ chan = &mgbdev->c2h_chan[channel];
+ }
+
+ ret = dmaengine_slave_config(chan->chan, &cfg);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to config dma: %d", ret);
+ return ret;
+ }
+
+ tx = dmaengine_prep_slave_sg(chan->chan, sgt->sgl, sgt->nents,
+ cfg.direction, 0);
+ if (!tx) {
+ dev_err(&pdev->dev, "failed to prep slave sg");
+ return -EIO;
+ }
+
+ tx->callback = chan_irq;
+ tx->callback_param = chan;
+
+ chan->dma_cookie = dmaengine_submit(tx);
+
+ dma_async_issue_pending(chan->chan);
+
+ if (!wait_for_completion_timeout(&chan->req_compl,
+ msecs_to_jiffies(10000))) {
+ dev_err(&pdev->dev, "dma timeout");
+ ret = -EIO;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
+int mgb4_dma_channel_init(struct mgb4_dev *mgbdev)
+{
+ int i, ret;
+ char name[16];
+ struct pci_dev *pdev = mgbdev->pdev;
+
+ for (i = 0; i < MGB4_VIN_DEVICES; i++) {
+ sprintf(name, "c2h%d", i);
+ mgbdev->c2h_chan[i].chan = dma_request_chan(&pdev->dev, name);
+ if (IS_ERR(mgbdev->c2h_chan[i].chan)) {
+ dev_err(&pdev->dev, "failed to initialize %s", name);
+ ret = PTR_ERR(mgbdev->c2h_chan[i].chan);
+ mgbdev->c2h_chan[i].chan = NULL;
+ return ret;
+ }
+ init_completion(&mgbdev->c2h_chan[i].req_compl);
+ }
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++) {
+ sprintf(name, "h2c%d", i);
+ mgbdev->h2c_chan[i].chan = dma_request_chan(&pdev->dev, name);
+ if (IS_ERR(mgbdev->h2c_chan[i].chan)) {
+ dev_err(&pdev->dev, "failed to initialize %s", name);
+ ret = PTR_ERR(mgbdev->h2c_chan[i].chan);
+ mgbdev->h2c_chan[i].chan = NULL;
+ return ret;
+ }
+ init_completion(&mgbdev->h2c_chan[i].req_compl);
+ }
+
+ return 0;
+}
+
+void mgb4_dma_channel_free(struct mgb4_dev *mgbdev)
+{
+ int i;
+
+ for (i = 0; i < MGB4_VIN_DEVICES; i++) {
+ if (mgbdev->c2h_chan[i].chan)
+ dma_release_channel(mgbdev->c2h_chan[i].chan);
+ }
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++) {
+ if (mgbdev->h2c_chan[i].chan)
+ dma_release_channel(mgbdev->h2c_chan[i].chan);
+ }
+}
diff --git a/drivers/media/pci/mgb4/mgb4_dma.h b/drivers/media/pci/mgb4/mgb4_dma.h
new file mode 100644
index 000000000000..443e2a11b055
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_dma.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_DMA_H__
+#define __MGB4_DMA_H__
+
+#include "mgb4_core.h"
+
+extern int mgb4_dma_channel_init(struct mgb4_dev *mgbdev);
+extern void mgb4_dma_channel_free(struct mgb4_dev *mgbdev);
+
+extern int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write,
+ u64 paddr, struct sg_table *sgt);
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_i2c.c b/drivers/media/pci/mgb4/mgb4_i2c.c
new file mode 100644
index 000000000000..536dc34b7f82
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_i2c.c
@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/version.h>
+#include "mgb4_i2c.h"
+
+static int read_r16(struct i2c_client *client, u16 reg, u8 *val, int len)
+{
+ int ret;
+ u8 buf[2];
+ struct i2c_msg msg[2] = {
+ {
+ .addr = client->addr,
+ .flags = 0,
+ .len = 2,
+ .buf = buf,
+ }, {
+ .addr = client->addr,
+ .flags = I2C_M_RD,
+ .len = len,
+ .buf = val,
+ }
+ };
+
+ buf[0] = (reg >> 8) & 0xff;
+ buf[1] = (reg >> 0) & 0xff;
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+ if (ret < 0)
+ return ret;
+ else if (ret != 2)
+ return -EREMOTEIO;
+ else
+ return 0;
+}
+
+static int write_r16(struct i2c_client *client, u16 reg, const u8 *val, int len)
+{
+ int ret;
+ u8 buf[4];
+ struct i2c_msg msg[1] = {
+ {
+ .addr = client->addr,
+ .flags = 0,
+ .len = 2 + len,
+ .buf = buf,
+ }
+ };
+
+ if (2 + len > sizeof(buf))
+ return -EINVAL;
+
+ buf[0] = (reg >> 8) & 0xff;
+ buf[1] = (reg >> 0) & 0xff;
+ memcpy(&buf[2], val, len);
+
+ ret = i2c_transfer(client->adapter, msg, 1);
+ if (ret < 0)
+ return ret;
+ else if (ret != 1)
+ return -EREMOTEIO;
+ else
+ return 0;
+}
+
+
+int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap,
+ struct i2c_board_info const *info, int addr_size)
+{
+ client->client = i2c_new_client_device(adap, info);
+ if (IS_ERR(client->client))
+ return PTR_ERR(client->client);
+
+ client->addr_size = addr_size;
+
+ return 0;
+}
+
+void mgb4_i2c_free(struct mgb4_i2c_client *client)
+{
+ i2c_unregister_device(client->client);
+}
+
+
+s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg)
+{
+ int ret;
+ u8 b;
+
+ if (client->addr_size == 8)
+ return i2c_smbus_read_byte_data(client->client, reg);
+
+ ret = read_r16(client->client, reg, &b, 1);
+ if (ret < 0)
+ return ret;
+
+ return (s32)b;
+}
+
+s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val)
+{
+ if (client->addr_size == 8)
+ return i2c_smbus_write_byte_data(client->client, reg, val);
+ else
+ return write_r16(client->client, reg, &val, 1);
+}
+
+s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, u8 val)
+{
+ s32 ret;
+
+ if (mask != 0xFF) {
+ ret = mgb4_i2c_read_byte(client, reg);
+ if (ret < 0)
+ return ret;
+ val |= (u8)ret & ~mask;
+ }
+
+ return mgb4_i2c_write_byte(client, reg, val);
+}
+
+int mgb4_i2c_configure(struct mgb4_i2c_client *client,
+ const struct mgb4_i2c_kv *values, size_t count)
+{
+ size_t i;
+ s32 res;
+
+ for (i = 0; i < count; i++) {
+ res = mgb4_i2c_mask_byte(client, values[i].reg, values[i].mask,
+ values[i].val);
+ if (res < 0)
+ return res;
+ }
+
+ return 0;
+}
diff --git a/drivers/media/pci/mgb4/mgb4_i2c.h b/drivers/media/pci/mgb4/mgb4_i2c.h
new file mode 100644
index 000000000000..e5003927509f
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_i2c.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_I2C_H__
+#define __MGB4_I2C_H__
+
+#include <linux/i2c.h>
+
+struct mgb4_i2c_client {
+ struct i2c_client *client;
+ int addr_size;
+};
+
+struct mgb4_i2c_kv {
+ u16 reg;
+ u8 mask;
+ u8 val;
+};
+
+extern int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap,
+ struct i2c_board_info const *info, int addr_size);
+extern void mgb4_i2c_free(struct mgb4_i2c_client *client);
+
+extern s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg);
+extern s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val);
+extern s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask,
+ u8 val);
+
+extern int mgb4_i2c_configure(struct mgb4_i2c_client *client,
+ const struct mgb4_i2c_kv *values, size_t count);
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h
new file mode 100644
index 000000000000..dff92065f2c0
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_io.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_IO_H__
+#define __MGB4_IO_H__
+
+#include <media/v4l2-dev.h>
+
+#ifndef VFL_TYPE_GRABBER
+#define VFL_TYPE_GRABBER VFL_TYPE_VIDEO
+#endif
+
+#define ERR_NO_REG 0xFFFFFFFE
+#define ERR_QUEUE_TIMEOUT 0xFFFFFFFD
+#define ERR_QUEUE_EMPTY 0xFFFFFFFC
+#define ERR_QUEUE_FULL 0xFFFFFFFB
+
+#define BYTESPERLINE(width, alignment) \
+ (((((width) * 4) - 1) | ((alignment) - 1)) + 1)
+#define PADDING(width, alignment) \
+ ((BYTESPERLINE((width), (alignment)) - ((width) * 4)) / 4)
+
+struct frame_buffer {
+ struct vb2_v4l2_buffer vb;
+ struct list_head list;
+};
+
+extern inline struct frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer *vbuf)
+{
+ return container_of(vbuf, struct frame_buffer, vb);
+}
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c
new file mode 100644
index 000000000000..53d4e4503a74
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_regs.c
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/ioport.h>
+#include "mgb4_regs.h"
+
+int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs)
+{
+ regs->mapbase = res->start;
+ regs->mapsize = res->end - res->start;
+
+ if (!request_mem_region(regs->mapbase, regs->mapsize, res->name))
+ return -EINVAL;
+ regs->membase = ioremap(regs->mapbase, regs->mapsize);
+ if (!regs->membase) {
+ release_mem_region(regs->mapbase, regs->mapsize);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void mgb4_regs_free(struct mgb4_regs *regs)
+{
+ iounmap(regs->membase);
+ release_mem_region(regs->mapbase, regs->mapsize);
+}
diff --git a/drivers/media/pci/mgb4/mgb4_regs.h b/drivers/media/pci/mgb4/mgb4_regs.h
new file mode 100644
index 000000000000..1cc16941ea45
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_regs.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_REGS_H__
+#define __MGB4_REGS_H__
+
+#include <linux/io.h>
+
+struct mgb4_regs {
+ resource_size_t mapbase;
+ resource_size_t mapsize;
+ void __iomem *membase;
+};
+
+#define mgb4_write_reg(regs, offset, val) \
+ iowrite32(val, (regs)->membase + (offset))
+#define mgb4_read_reg(regs, offset) \
+ ioread32((regs)->membase + (offset))
+
+static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask,
+ u32 val)
+{
+ u32 ret = mgb4_read_reg(regs, reg);
+
+ val |= ret & ~mask;
+ mgb4_write_reg(regs, reg, val);
+}
+
+extern int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs);
+extern void mgb4_regs_free(struct mgb4_regs *regs);
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_sysfs.h b/drivers/media/pci/mgb4/mgb4_sysfs.h
new file mode 100644
index 000000000000..2b42a8ba37f7
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_sysfs.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_SYSFS_H__
+#define __MGB4_SYSFS_H__
+
+#include <linux/sysfs.h>
+
+extern struct device_attribute *mgb4_pci_attrs[];
+extern struct device_attribute *mgb4_fpdl3_in_attrs[];
+extern struct device_attribute *mgb4_gmsl_in_attrs[];
+extern struct device_attribute *mgb4_fpdl3_out_attrs[];
+extern struct device_attribute *mgb4_gmsl_out_attrs[];
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_in.c b/drivers/media/pci/mgb4/mgb4_sysfs_in.c
new file mode 100644
index 000000000000..fc024393c7ba
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_sysfs_in.c
@@ -0,0 +1,750 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/device.h>
+#include "mgb4_core.h"
+#include "mgb4_i2c.h"
+#include "mgb4_vin.h"
+#include "mgb4_cmt.h"
+#include "mgb4_sysfs.h"
+
+/* Common for both FPDL3 and GMSL */
+
+static ssize_t read_input_id(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+
+ return sprintf(buf, "%d\n", vindev->config->id);
+}
+
+static ssize_t read_oldi_lane_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u16 i2c_reg;
+ u8 i2c_mask, i2c_single_val, i2c_dual_val;
+ u32 config;
+ int ret;
+
+ i2c_reg = MGB4_IS_GMSL(vindev->mgbdev) ? 0x1CE : 0x49;
+ i2c_mask = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x03;
+ i2c_single_val = MGB4_IS_GMSL(vindev->mgbdev) ? 0x00 : 0x02;
+ i2c_dual_val = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x00;
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_read_byte(&vindev->deser, i2c_reg);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ config = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.config);
+
+ if (((config & (1U<<9)) && ((ret & i2c_mask) != i2c_dual_val))
+ || (!(config & (1U<<9)) && ((ret & i2c_mask) != i2c_single_val))) {
+ dev_err(dev, "I2C/FPGA register value mismatch\n");
+ return -EINVAL;
+ }
+
+ return sprintf(buf, "%s\n", config & (1U<<9) ? "1" : "0");
+}
+
+static ssize_t write_oldi_lane_width(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 fpga_data;
+ u16 i2c_reg;
+ u8 i2c_mask, i2c_data;
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case 0: /* single */
+ fpga_data = 0;
+ i2c_data = MGB4_IS_GMSL(vindev->mgbdev) ? 0x00 : 0x02;
+ break;
+ case 1: /* dual */
+ fpga_data = 1U<<9;
+ i2c_data = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x00;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ i2c_reg = MGB4_IS_GMSL(vindev->mgbdev) ? 0x1CE : 0x49;
+ i2c_mask = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x03;
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_mask_byte(&vindev->deser, i2c_reg, i2c_mask, i2c_data);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, 1U<<9,
+ fpga_data);
+ if (MGB4_IS_GMSL(vindev->mgbdev)) {
+ /* reset input link */
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_mask_byte(&vindev->deser, 0x10, 1U<<5, 1U<<5);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+ }
+
+ return count;
+}
+
+static ssize_t read_color_mapping(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&vindev->mgbdev->video,
+ vindev->config->regs.config);
+
+ return sprintf(buf, "%s\n", config & (1U<<8) ? "0" : "1");
+}
+
+static ssize_t write_color_mapping(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 fpga_data;
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case 0: /* OLDI/JEIDA */
+ fpga_data = (1U<<8);
+ break;
+ case 1: /* SPWG/VESA */
+ fpga_data = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, 1U<<8,
+ fpga_data);
+
+ return count;
+}
+
+static ssize_t read_link_status(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status);
+
+ return sprintf(buf, "%s\n", status & (1U<<2) ? "1" : "0");
+}
+
+static ssize_t read_stream_status(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status);
+
+ return sprintf(buf, "%s\n", ((status & (1<<14)) && (status & (1<<2))
+ && (status & (3<<9))) ? "1" : "0");
+}
+
+static ssize_t read_hsync_status(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status);
+ u32 res;
+
+ if (!(status & (1U<<11)))
+ res = 0x02; // not available
+ else if (status & (1U<<12))
+ res = 0x01; // active high
+ else
+ res = 0x00; // active low
+
+ return sprintf(buf, "%u\n", res);
+}
+
+static ssize_t read_vsync_status(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status);
+ u32 res;
+
+ if (!(status & (1U<<11)))
+ res = 0x02; // not available
+ else if (status & (1U<<13))
+ res = 0x01; // active high
+ else
+ res = 0x00; // active low
+
+ return sprintf(buf, "%u\n", res);
+}
+
+static ssize_t read_hsync_gap(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sync = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.sync);
+
+ return sprintf(buf, "%u\n", sync >> 16);
+}
+
+static ssize_t write_hsync_gap(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFFFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, 0xFFFF0000,
+ val << 16);
+
+ return count;
+}
+
+static ssize_t read_vsync_gap(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sync = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.sync);
+
+ return sprintf(buf, "%u\n", sync & 0xFFFF);
+}
+
+static ssize_t write_vsync_gap(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFFFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, 0xFFFF, val);
+
+ return count;
+}
+
+static ssize_t read_pclk_frequency(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 freq = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.pclk);
+
+ return sprintf(buf, "%u\n", freq);
+}
+
+static ssize_t read_hsync_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal);
+
+ return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16);
+}
+
+static ssize_t read_vsync_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal2);
+
+ return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16);
+}
+
+static ssize_t read_hback_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal);
+
+ return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8);
+}
+
+static ssize_t read_hfront_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal);
+
+ return sprintf(buf, "%u\n", (sig & 0x000000FF));
+}
+
+static ssize_t read_vback_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal2);
+
+ return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8);
+}
+
+static ssize_t read_vfront_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal2);
+
+ return sprintf(buf, "%u\n", (sig & 0x000000FF));
+}
+
+static ssize_t read_frequency_range(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+
+ return sprintf(buf, "%d\n", vindev->freq_range);
+}
+
+static ssize_t write_frequency_range(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 1)
+ return -EINVAL;
+
+ spin_lock_irqsave(&(vindev->vdev.fh_lock), flags);
+ if (!list_empty(&(vindev->vdev.fh_list))) {
+ spin_unlock_irqrestore(&(vindev->vdev.fh_lock), flags);
+ return -EBUSY;
+ }
+
+ mgb4_cmt_set_vin(vindev, val);
+ vindev->freq_range = val;
+
+ spin_unlock_irqrestore(&(vindev->vdev.fh_lock), flags);
+
+ return count;
+}
+
+static ssize_t read_alignment(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+
+ return sprintf(buf, "%d\n", vindev->alignment);
+}
+
+static ssize_t write_alignment(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (!val || (val & (val - 1)))
+ return -EINVAL;
+
+ spin_lock_irqsave(&(vindev->vdev.fh_lock), flags);
+ if (!list_empty(&(vindev->vdev.fh_list))) {
+ spin_unlock_irqrestore(&(vindev->vdev.fh_lock), flags);
+ return -EBUSY;
+ }
+
+ vindev->alignment = val;
+
+ spin_unlock_irqrestore(&(vindev->vdev.fh_lock), flags);
+
+ return count;
+}
+
+/* FPDL3 only */
+
+static ssize_t read_fpdl3_input_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ s32 ret;
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_read_byte(&vindev->deser, 0x34);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ switch ((u8)ret & 0x18) {
+ case 0:
+ return sprintf(buf, "0\n");
+ case 0x10:
+ return sprintf(buf, "1\n");
+ case 0x08:
+ return sprintf(buf, "2\n");
+ default:
+ return -EINVAL;
+ }
+}
+
+static ssize_t write_fpdl3_input_width(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ u8 i2c_data;
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case 0: /* auto */
+ i2c_data = 0x00;
+ break;
+ case 1: /* single */
+ i2c_data = 0x10;
+ break;
+ case 2: /* dual */
+ i2c_data = 0x08;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_mask_byte(&vindev->deser, 0x34, 0x18, i2c_data);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return count;
+}
+
+
+/* GMSL only */
+
+static ssize_t read_gmsl_mode(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ s32 r1, r300, r3;
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ r1 = mgb4_i2c_read_byte(&vindev->deser, 0x01);
+ r300 = mgb4_i2c_read_byte(&vindev->deser, 0x300);
+ r3 = mgb4_i2c_read_byte(&vindev->deser, 0x03);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (r1 < 0 || r300 < 0 || r3 < 0)
+ return -EIO;
+
+ if ((r1 & 0x03) == 0x03 && (r300 & 0x0C) == 0x0C && (r3 & 0xC0) == 0xC0)
+ return sprintf(buf, "0\n");
+ else if ((r1 & 0x03) == 0x02 && (r300 & 0x0C) == 0x08 && (r3 & 0xC0) == 0x00)
+ return sprintf(buf, "1\n");
+ else if ((r1 & 0x03) == 0x01 && (r300 & 0x0C) == 0x04 && (r3 & 0xC0) == 0x00)
+ return sprintf(buf, "2\n");
+ else if ((r1 & 0x03) == 0x00 && (r300 & 0x0C) == 0x00 && (r3 & 0xC0) == 0x00)
+ return sprintf(buf, "3\n");
+ else
+ return -EINVAL;
+}
+
+static ssize_t write_gmsl_mode(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ static const struct mgb4_i2c_kv G12[] = {
+ {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}};
+ static const struct mgb4_i2c_kv G6[] = {
+ {0x01, 0x03, 0x02}, {0x300, 0x0C, 0x08}, {0x03, 0xC0, 0x00}};
+ static const struct mgb4_i2c_kv G3[] = {
+ {0x01, 0x03, 0x01}, {0x300, 0x0C, 0x04}, {0x03, 0xC0, 0x00}};
+ static const struct mgb4_i2c_kv G1[] = {
+ {0x01, 0x03, 0x00}, {0x300, 0x0C, 0x00}, {0x03, 0xC0, 0x00}};
+ static const struct mgb4_i2c_kv reset[] = {
+ {0x10, 1U<<5, 1U<<5}, {0x300, 1U<<6, 1U<<6}};
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ const struct mgb4_i2c_kv *values;
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case 0: /* 12Gb/s */
+ values = G12;
+ break;
+ case 1: /* 6Gb/s */
+ values = G6;
+ break;
+ case 2: /* 3Gb/s */
+ values = G3;
+ break;
+ case 3: /* 1.5Gb/s */
+ values = G1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_configure(&vindev->deser, values, 3);
+ ret |= mgb4_i2c_configure(&vindev->deser, reset, 2);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t read_gmsl_stream_id(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ s32 ret;
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_read_byte(&vindev->deser, 0xA0);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return sprintf(buf, "%d\n", ret & 0x03);
+}
+
+static ssize_t write_gmsl_stream_id(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 3)
+ return -EINVAL;
+
+ spin_lock_irqsave(&(vindev->vdev.fh_lock), flags);
+ ret = list_empty(&(vindev->vdev.fh_list));
+ spin_unlock_irqrestore(&(vindev->vdev.fh_lock), flags);
+ if (!ret)
+ return -EBUSY;
+
+ /* Formaly, there is a race condition here as the change should be formaly
+ * done under the spinlock, but we only want to prevent a resolution change
+ * where possible. However, resolution changes can happen anyway and the
+ * driver can handle them (they only break the image, not the system).
+ *
+ * So instead of trying to workaround the spinlock - mgb4_i2c_mask_byte()
+ * does sleep - we simply let the rare race condition happen...
+ */
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_mask_byte(&vindev->deser, 0xA0, 0x03, (u8)val);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t read_gmsl_fec(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ s32 r3e0, r308;
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ r3e0 = mgb4_i2c_read_byte(&vindev->deser, 0x3E0);
+ r308 = mgb4_i2c_read_byte(&vindev->deser, 0x308);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (r3e0 < 0 || r308 < 0)
+ return -EIO;
+
+ if ((r3e0 & 0x07) == 0x00 && (r308 & 0x01) == 0x00)
+ return sprintf(buf, "0\n");
+ else if ((r3e0 & 0x07) == 0x07 && (r308 & 0x01) == 0x01)
+ return sprintf(buf, "1\n");
+ else
+ return -EINVAL;
+}
+
+static ssize_t write_gmsl_fec(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vin_dev *vindev = video_get_drvdata(vdev);
+ static const struct mgb4_i2c_kv enable[] = {
+ {0x3E0, 0x07, 0x07}, {0x308, 0x01, 0x01}};
+ static const struct mgb4_i2c_kv disable[] = {
+ {0x3E0, 0x07, 0x00}, {0x308, 0x01, 0x00}};
+ static const struct mgb4_i2c_kv reset[] = {
+ {0x10, 1U<<5, 1U<<5}, {0x300, 1U<<6, 1U<<6}};
+ const struct mgb4_i2c_kv *values;
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case 0: /* disabled */
+ values = disable;
+ break;
+ case 1: /* enabled */
+ values = enable;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&vindev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_configure(&vindev->deser, values, 2);
+ ret |= mgb4_i2c_configure(&vindev->deser, reset, 2);
+ mutex_unlock(&vindev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return count;
+}
+
+static DEVICE_ATTR(input_id, 0444, read_input_id, NULL);
+static DEVICE_ATTR(oldi_lane_width, 0644, read_oldi_lane_width,
+ write_oldi_lane_width);
+static DEVICE_ATTR(color_mapping, 0644, read_color_mapping,
+ write_color_mapping);
+static DEVICE_ATTR(link_status, 0444, read_link_status, NULL);
+static DEVICE_ATTR(stream_status, 0444, read_stream_status, NULL);
+static DEVICE_ATTR(hsync_status, 0444, read_hsync_status, NULL);
+static DEVICE_ATTR(vsync_status, 0444, read_vsync_status, NULL);
+static DEVICE_ATTR(hsync_gap_length, 0644, read_hsync_gap, write_hsync_gap);
+static DEVICE_ATTR(vsync_gap_length, 0644, read_vsync_gap, write_vsync_gap);
+static DEVICE_ATTR(pclk_frequency, 0444, read_pclk_frequency, NULL);
+static DEVICE_ATTR(hsync_width, 0444, read_hsync_width, NULL);
+static DEVICE_ATTR(vsync_width, 0444, read_vsync_width, NULL);
+static DEVICE_ATTR(hback_porch, 0444, read_hback_porch, NULL);
+static DEVICE_ATTR(hfront_porch, 0444, read_hfront_porch, NULL);
+static DEVICE_ATTR(vback_porch, 0444, read_vback_porch, NULL);
+static DEVICE_ATTR(vfront_porch, 0444, read_vfront_porch, NULL);
+static DEVICE_ATTR(frequency_range, 0644, read_frequency_range,
+ write_frequency_range);
+static DEVICE_ATTR(alignment, 0644, read_alignment, write_alignment);
+
+static DEVICE_ATTR(fpdl3_input_width, 0644, read_fpdl3_input_width,
+ write_fpdl3_input_width);
+
+static DEVICE_ATTR(gmsl_mode, 0644, read_gmsl_mode, write_gmsl_mode);
+static DEVICE_ATTR(gmsl_stream_id, 0644, read_gmsl_stream_id,
+ write_gmsl_stream_id);
+static DEVICE_ATTR(gmsl_fec, 0644, read_gmsl_fec, write_gmsl_fec);
+
+struct device_attribute *mgb4_fpdl3_in_attrs[] = {
+ &dev_attr_input_id,
+ &dev_attr_link_status,
+ &dev_attr_stream_status,
+ &dev_attr_hsync_status,
+ &dev_attr_vsync_status,
+ &dev_attr_oldi_lane_width,
+ &dev_attr_color_mapping,
+ &dev_attr_hsync_gap_length,
+ &dev_attr_vsync_gap_length,
+ &dev_attr_pclk_frequency,
+ &dev_attr_hsync_width,
+ &dev_attr_vsync_width,
+ &dev_attr_hback_porch,
+ &dev_attr_hfront_porch,
+ &dev_attr_vback_porch,
+ &dev_attr_vfront_porch,
+ &dev_attr_frequency_range,
+ &dev_attr_alignment,
+ &dev_attr_fpdl3_input_width,
+ NULL
+};
+
+struct device_attribute *mgb4_gmsl_in_attrs[] = {
+ &dev_attr_input_id,
+ &dev_attr_link_status,
+ &dev_attr_stream_status,
+ &dev_attr_hsync_status,
+ &dev_attr_vsync_status,
+ &dev_attr_oldi_lane_width,
+ &dev_attr_color_mapping,
+ &dev_attr_hsync_gap_length,
+ &dev_attr_vsync_gap_length,
+ &dev_attr_pclk_frequency,
+ &dev_attr_hsync_width,
+ &dev_attr_vsync_width,
+ &dev_attr_hback_porch,
+ &dev_attr_hfront_porch,
+ &dev_attr_vback_porch,
+ &dev_attr_vfront_porch,
+ &dev_attr_frequency_range,
+ &dev_attr_alignment,
+ &dev_attr_gmsl_mode,
+ &dev_attr_gmsl_stream_id,
+ &dev_attr_gmsl_fec,
+ NULL
+};
diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c
new file mode 100644
index 000000000000..be80b635d1d7
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c
@@ -0,0 +1,734 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/device.h>
+#include "mgb4_core.h"
+#include "mgb4_i2c.h"
+#include "mgb4_vout.h"
+#include "mgb4_vin.h"
+#include "mgb4_cmt.h"
+#include "mgb4_sysfs.h"
+
+static int loopin_cnt(struct mgb4_vin_dev *vindev)
+{
+ struct mgb4_vout_dev *voutdev;
+ u32 config;
+ int i, cnt = 0;
+
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++) {
+ voutdev = vindev->mgbdev->vout[i];
+ if (!voutdev)
+ continue;
+
+ config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.config);
+ if ((config & 0xc) >> 2 == vindev->config->id)
+ cnt++;
+ }
+
+ return cnt;
+}
+
+
+/* Common for both FPDL3 and GMSL */
+
+static ssize_t read_output_id(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+
+ return sprintf(buf, "%d\n", voutdev->config->id);
+}
+
+static ssize_t read_video_source(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.config);
+
+ return sprintf(buf, "%u\n", (config & 0xc) >> 2);
+}
+
+static ssize_t write_video_source(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ struct mgb4_dev *mgbdev = voutdev->mgbdev;
+ struct mgb4_vin_dev *loopin_new = 0, *loopin_old = 0;
+ unsigned long val;
+ unsigned long flags_in[MGB4_VIN_DEVICES], flags_out[MGB4_VOUT_DEVICES];
+ ssize_t ret;
+ u32 config;
+ int i;
+
+
+ memset(flags_in, 0, sizeof(flags_in));
+ memset(flags_out, 0, sizeof(flags_out));
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 3)
+ return -EINVAL;
+
+ for (i = 0; i < MGB4_VIN_DEVICES; i++)
+ if (mgbdev->vin[i])
+ spin_lock_irqsave(&(mgbdev->vin[i]->vdev.fh_lock), flags_in[i]);
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+ if (mgbdev->vout[i])
+ spin_lock_irqsave(&(mgbdev->vout[i]->vdev.fh_lock), flags_out[i]);
+
+ ret = -EBUSY;
+ for (i = 0; i < MGB4_VIN_DEVICES; i++)
+ if (mgbdev->vin[i] && !list_empty(&(mgbdev->vin[i]->vdev.fh_list)))
+ goto error;
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+ if (mgbdev->vout[i] && !list_empty(&(mgbdev->vout[i]->vdev.fh_list)))
+ goto error;
+
+ config = mgb4_read_reg(&mgbdev->video, voutdev->config->regs.config);
+
+ if (((config & 0xc) >> 2) < MGB4_VIN_DEVICES)
+ loopin_old = mgbdev->vin[(config & 0xc) >> 2];
+ if (val < MGB4_VIN_DEVICES)
+ loopin_new = mgbdev->vin[val];
+ if (loopin_old && loopin_cnt(loopin_old) == 1)
+ mgb4_mask_reg(&mgbdev->video, loopin_old->config->regs.config, 0x2, 0x0);
+ if (loopin_new)
+ mgb4_mask_reg(&mgbdev->video, loopin_new->config->regs.config, 0x2, 0x2);
+
+ if (val == voutdev->config->id + MGB4_VIN_DEVICES)
+ mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config,
+ config & ~(1<<1));
+ else
+ mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config,
+ config | (1U<<1));
+
+ mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0xc, val << 2);
+
+ ret = count;
+
+error:
+ for (i = MGB4_VOUT_DEVICES - 1; i >= 0; i--)
+ if (mgbdev->vout[i])
+ spin_unlock_irqrestore(&(mgbdev->vout[i]->vdev.fh_lock), flags_out[i]);
+ for (i = MGB4_VIN_DEVICES - 1; i >= 0; i--)
+ if (mgbdev->vin[i])
+ spin_unlock_irqrestore(&(mgbdev->vin[i]->vdev.fh_lock), flags_in[i]);
+
+ return ret;
+}
+
+static ssize_t read_display_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.resolution);
+
+ return sprintf(buf, "%u\n", config >> 16);
+}
+
+static ssize_t write_display_width(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ int ret, busy;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFFFF)
+ return -EINVAL;
+
+ spin_lock_irqsave(&(voutdev->vdev.fh_lock), flags);
+ busy = !list_empty(&(voutdev->vdev.fh_list));
+ if (busy) {
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+ return -EBUSY;
+ }
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution,
+ 0xFFFF0000, val << 16);
+
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+
+ return count;
+}
+
+static ssize_t read_display_height(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.resolution);
+
+ return sprintf(buf, "%u\n", config & 0xFFFF);
+}
+
+static ssize_t write_display_height(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ int ret, busy;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFFFF)
+ return -EINVAL;
+
+ spin_lock_irqsave(&(voutdev->vdev.fh_lock), flags);
+ busy = !list_empty(&(voutdev->vdev.fh_list));
+ if (busy) {
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+ return -EBUSY;
+ }
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution,
+ 0xFFFF, val);
+
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+
+ return count;
+}
+
+static ssize_t read_frame_rate(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 period = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.frame_period);
+
+ return sprintf(buf, "%u\n", 125000000 / period);
+}
+
+static ssize_t write_frame_rate(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ mgb4_write_reg(&voutdev->mgbdev->video, voutdev->config->regs.frame_period,
+ 125000000 / val);
+
+ return count;
+}
+
+static ssize_t read_hsync_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync);
+
+ return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16);
+}
+
+static ssize_t write_hsync_width(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync,
+ 0x00FF0000, val << 16);
+
+ return count;
+}
+
+static ssize_t read_vsync_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync);
+
+ return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16);
+}
+
+static ssize_t write_vsync_width(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync,
+ 0x00FF0000, val << 16);
+
+ return count;
+}
+
+static ssize_t read_hback_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync);
+
+ return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8);
+}
+
+static ssize_t write_hback_porch(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync,
+ 0x0000FF00, val << 8);
+
+ return count;
+}
+
+static ssize_t read_vback_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync);
+
+ return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8);
+}
+
+static ssize_t write_vback_porch(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync,
+ 0x0000FF00, val << 8);
+
+ return count;
+}
+
+static ssize_t read_hfront_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync);
+
+ return sprintf(buf, "%u\n", (sig & 0x000000FF));
+}
+
+static ssize_t write_hfront_porch(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync,
+ 0x000000FF, val);
+
+ return count;
+}
+
+static ssize_t read_vfront_porch(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync);
+
+ return sprintf(buf, "%u\n", (sig & 0x000000FF));
+}
+
+static ssize_t write_vfront_porch(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFF)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync,
+ 0x000000FF, val);
+
+ return count;
+}
+
+static ssize_t read_alignment(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+
+ return sprintf(buf, "%d\n", voutdev->alignment);
+}
+
+static ssize_t write_alignment(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ u32 config;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (!val || (val & (val - 1)))
+ return -EINVAL;
+
+ spin_lock_irqsave(&(voutdev->vdev.fh_lock), flags);
+ if (!list_empty(&(voutdev->vdev.fh_list))) {
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+ return -EBUSY;
+ }
+ /* Do not allow the change if loopback is active */
+ config = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.config);
+ if (((config & 0xc) >> 2) < 2) {
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+ return -EPERM;
+ }
+
+ voutdev->alignment = val;
+
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+
+ return count;
+}
+
+/* FPDL3 only */
+
+static ssize_t read_hsync_polarity(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.hsync);
+
+ return sprintf(buf, "%u\n", (config & (1<<31)) >> 31);
+}
+
+static ssize_t write_hsync_polarity(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 1)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, (1<<31),
+ val << 31);
+
+ return count;
+}
+
+static ssize_t read_vsync_polarity(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.vsync);
+
+ return sprintf(buf, "%u\n", (config & (1<<31)) >> 31);
+}
+
+static ssize_t write_vsync_polarity(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 1)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, (1<<31),
+ val << 31);
+
+ return count;
+}
+
+static ssize_t read_de_polarity(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u32 config = mgb4_read_reg(&voutdev->mgbdev->video,
+ voutdev->config->regs.vsync);
+
+ return sprintf(buf, "%u\n", (config & (1<<30)) >> 30);
+}
+
+static ssize_t write_de_polarity(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val > 1)
+ return -EINVAL;
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, (1<<30),
+ val << 30);
+
+ return count;
+}
+
+static ssize_t read_fpdl3_output_width(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ s32 ret;
+
+ mutex_lock(&voutdev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_read_byte(&voutdev->ser, 0x5B);
+ mutex_unlock(&voutdev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ switch ((u8)ret & 0x03) {
+ case 0:
+ return sprintf(buf, "0\n");
+ case 1:
+ return sprintf(buf, "1\n");
+ case 3:
+ return sprintf(buf, "2\n");
+ default:
+ return -EINVAL;
+ }
+}
+
+static ssize_t write_fpdl3_output_width(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ u8 i2c_data;
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch (val) {
+ case 0: /* auto */
+ i2c_data = 0x00;
+ break;
+ case 1: /* single */
+ i2c_data = 0x01;
+ break;
+ case 2: /* dual */
+ i2c_data = 0x03;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&voutdev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x5B, 0x03, i2c_data);
+ mutex_unlock(&voutdev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t read_pclk_frequency(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+
+ return sprintf(buf, "%u\n", voutdev->freq);
+}
+
+static ssize_t write_pclk_frequency(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
+ unsigned long val, flags;
+ int ret, busy;
+ unsigned int dp;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ spin_lock_irqsave(&(voutdev->vdev.fh_lock), flags);
+ busy = !list_empty(&(voutdev->vdev.fh_list));
+ if (busy) {
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+ return -EBUSY;
+ }
+
+ dp = (val > 50000) ? 1 : 0;
+ voutdev->freq = mgb4_cmt_set_vout(voutdev, val >> dp) << dp;
+
+ spin_unlock_irqrestore(&(voutdev->vdev.fh_lock), flags);
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config,
+ 0x10, dp << 4);
+ mutex_lock(&voutdev->mgbdev->i2c_lock);
+ ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x4F, 1<<6, ((~dp)&1)<<6);
+ mutex_unlock(&voutdev->mgbdev->i2c_lock);
+ if (ret < 0)
+ return -EIO;
+
+ return count;
+}
+
+
+static DEVICE_ATTR(output_id, 0444, read_output_id, NULL);
+static DEVICE_ATTR(video_source, 0644, read_video_source, write_video_source);
+static DEVICE_ATTR(display_width, 0644, read_display_width,
+ write_display_width);
+static DEVICE_ATTR(display_height, 0644, read_display_height,
+ write_display_height);
+static DEVICE_ATTR(frame_rate, 0644, read_frame_rate, write_frame_rate);
+static DEVICE_ATTR(hsync_polarity, 0644, read_hsync_polarity,
+ write_hsync_polarity);
+static DEVICE_ATTR(vsync_polarity, 0644, read_vsync_polarity,
+ write_vsync_polarity);
+static DEVICE_ATTR(de_polarity, 0644, read_de_polarity,
+ write_de_polarity);
+static DEVICE_ATTR(pclk_frequency, 0644, read_pclk_frequency,
+ write_pclk_frequency);
+static DEVICE_ATTR(hsync_width, 0644, read_hsync_width, write_hsync_width);
+static DEVICE_ATTR(vsync_width, 0644, read_vsync_width, write_vsync_width);
+static DEVICE_ATTR(hback_porch, 0644, read_hback_porch, write_hback_porch);
+static DEVICE_ATTR(hfront_porch, 0644, read_hfront_porch, write_hfront_porch);
+static DEVICE_ATTR(vback_porch, 0644, read_vback_porch, write_vback_porch);
+static DEVICE_ATTR(vfront_porch, 0644, read_vfront_porch, write_vfront_porch);
+static DEVICE_ATTR(alignment, 0644, read_alignment, write_alignment);
+
+static DEVICE_ATTR(fpdl3_output_width, 0644, read_fpdl3_output_width,
+ write_fpdl3_output_width);
+
+
+struct device_attribute *mgb4_fpdl3_out_attrs[] = {
+ &dev_attr_output_id,
+ &dev_attr_video_source,
+ &dev_attr_display_width,
+ &dev_attr_display_height,
+ &dev_attr_frame_rate,
+ &dev_attr_hsync_polarity,
+ &dev_attr_vsync_polarity,
+ &dev_attr_de_polarity,
+ &dev_attr_pclk_frequency,
+ &dev_attr_hsync_width,
+ &dev_attr_vsync_width,
+ &dev_attr_hback_porch,
+ &dev_attr_hfront_porch,
+ &dev_attr_vback_porch,
+ &dev_attr_vfront_porch,
+ &dev_attr_alignment,
+ &dev_attr_fpdl3_output_width,
+ NULL
+};
+
+struct device_attribute *mgb4_gmsl_out_attrs[] = {
+ &dev_attr_output_id,
+ &dev_attr_video_source,
+ &dev_attr_display_width,
+ &dev_attr_display_height,
+ &dev_attr_frame_rate,
+ NULL
+};
diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_pci.c b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c
new file mode 100644
index 000000000000..a7f59cd9cfc9
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/device.h>
+#include "mgb4_core.h"
+#include "mgb4_sysfs.h"
+
+static ssize_t read_module_version(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", mgbdev->module_version & 0x0F);
+}
+
+static ssize_t read_module_type(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", mgbdev->module_version >> 4);
+}
+
+static ssize_t read_fw_version(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+ u32 config = mgb4_read_reg(&mgbdev->video, 0xC4);
+
+ return sprintf(buf, "%u\n", config & 0xFFFF);
+}
+
+static ssize_t read_fw_type(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+ u32 config = mgb4_read_reg(&mgbdev->video, 0xC4);
+
+ return sprintf(buf, "%u\n", config >> 24);
+}
+
+static ssize_t read_serial_number(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+ u32 sn = mgbdev->serial_number;
+
+ return sprintf(buf, "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF,
+ (sn >> 8) & 0xFF, sn & 0xFF);
+}
+
+static ssize_t read_temperature(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+ u32 val10, val;
+
+ val = mgb4_read_reg(&mgbdev->video, 0xD0);
+ val10 = ((((val >> 20) & 0xFFF) * 503975) - 1118822400) / 409600;
+
+ return sprintf(buf, "%u\n", ((val10 % 10) > 4)
+ ? (val10 / 10) + 1 : val10 / 10);
+}
+
+static DEVICE_ATTR(module_version, 0444, read_module_version, NULL);
+static DEVICE_ATTR(module_type, 0444, read_module_type, NULL);
+static DEVICE_ATTR(fw_version, 0444, read_fw_version, NULL);
+static DEVICE_ATTR(fw_type, 0444, read_fw_type, NULL);
+static DEVICE_ATTR(serial_number, 0444, read_serial_number, NULL);
+static DEVICE_ATTR(temperature, 0444, read_temperature, NULL);
+
+struct device_attribute *mgb4_pci_attrs[] = {
+ &dev_attr_module_type,
+ &dev_attr_module_version,
+ &dev_attr_fw_type,
+ &dev_attr_fw_version,
+ &dev_attr_serial_number,
+ &dev_attr_temperature,
+ NULL
+};
diff --git a/drivers/media/pci/mgb4/mgb4_trigger.c b/drivers/media/pci/mgb4/mgb4_trigger.c
new file mode 100644
index 000000000000..607ca33104c2
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_trigger.c
@@ -0,0 +1,203 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/version.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/pci.h>
+#include <linux/dma/amd_xdma.h>
+#include "mgb4_core.h"
+#include "mgb4_trigger.h"
+
+struct trigger_data {
+ struct mgb4_dev *mgbdev;
+ struct iio_trigger *trig;
+};
+
+static int trigger_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val,
+ int *val2, long mask)
+{
+ struct trigger_data *st = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ if (iio_buffer_enabled(indio_dev))
+ return -EBUSY;
+ *val = mgb4_read_reg(&st->mgbdev->video, 0xA0);
+
+ return IIO_VAL_INT;
+ }
+
+ return -EINVAL;
+}
+
+static int trigger_set_state(struct iio_trigger *trig, bool state)
+{
+ struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+ struct trigger_data *st = iio_priv(indio_dev);
+ int irq = xdma_get_user_irq(st->mgbdev->xdev, 11);
+
+ if (state)
+ xdma_enable_user_irq(st->mgbdev->xdev, irq);
+ else
+ xdma_disable_user_irq(st->mgbdev->xdev, irq);
+
+ return 0;
+}
+
+static const struct iio_trigger_ops trigger_ops = {
+ .set_trigger_state = &trigger_set_state,
+};
+
+static const struct iio_info trigger_info = {
+ .read_raw = trigger_read_raw,
+};
+
+#define TRIGGER_CHANNEL(_si) { \
+ .type = IIO_ACTIVITY, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .scan_index = _si, \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 32, \
+ .storagebits = 32, \
+ .shift = 0, \
+ .endianness = IIO_CPU \
+ }, \
+}
+
+static const struct iio_chan_spec trigger_channels[] = {
+ TRIGGER_CHANNEL(0),
+ IIO_CHAN_SOFT_TIMESTAMP(1),
+};
+
+static irqreturn_t trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct trigger_data *st = iio_priv(indio_dev);
+ struct {
+ u32 data;
+ s64 ts __aligned(8);
+ } scan;
+
+ scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0);
+ mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data);
+
+ iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp);
+ iio_trigger_notify_done(indio_dev->trig);
+
+ mgb4_write_reg(&st->mgbdev->video, 0xB4, 1U<<11);
+
+ return IRQ_HANDLED;
+}
+
+static int probe_trigger(struct iio_dev *indio_dev, int irq)
+{
+ int ret;
+ struct trigger_data *st = iio_priv(indio_dev);
+
+ st->trig = iio_trigger_alloc(&st->mgbdev->pdev->dev, "%s-dev%d",
+ indio_dev->name, iio_device_id(indio_dev));
+ if (!st->trig)
+ return -ENOMEM;
+
+ ret = request_irq(irq, &iio_trigger_generic_data_rdy_poll,
+ 0, "mgb4-trigger", st->trig);
+ if (ret)
+ goto error_free_trig;
+
+ st->trig->ops = &trigger_ops;
+ iio_trigger_set_drvdata(st->trig, indio_dev);
+ ret = iio_trigger_register(st->trig);
+ if (ret)
+ goto error_free_irq;
+
+ indio_dev->trig = iio_trigger_get(st->trig);
+
+ return 0;
+
+error_free_irq:
+ free_irq(irq, st->trig);
+error_free_trig:
+ iio_trigger_free(st->trig);
+
+ return ret;
+}
+
+static void remove_trigger(struct iio_dev *indio_dev, int irq)
+{
+ struct trigger_data *st = iio_priv(indio_dev);
+
+ iio_trigger_unregister(st->trig);
+ free_irq(irq, st->trig);
+ iio_trigger_free(st->trig);
+}
+
+struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev)
+{
+ struct iio_dev *indio_dev;
+ struct trigger_data *data;
+ struct pci_dev *pdev = mgbdev->pdev;
+ struct device *dev = &pdev->dev;
+ int rv, irq;
+
+ indio_dev = iio_device_alloc(dev, sizeof(*data));
+ if (!indio_dev)
+ return NULL;
+
+ indio_dev->info = &trigger_info;
+ indio_dev->name = "mgb4";
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = trigger_channels;
+ indio_dev->num_channels = ARRAY_SIZE(trigger_channels);
+
+ data = iio_priv(indio_dev);
+ data->mgbdev = mgbdev;
+
+ irq = xdma_get_user_irq(mgbdev->xdev, 11);
+ rv = probe_trigger(indio_dev, irq);
+ if (rv < 0) {
+ dev_err(dev, "iio triggered setup failed\n");
+ goto error_alloc;
+ }
+ rv = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+ trigger_handler, NULL);
+ if (rv < 0) {
+ dev_err(dev, "iio triggered buffer setup failed\n");
+ goto error_trigger;
+ }
+ rv = iio_device_register(indio_dev);
+ if (rv < 0) {
+ dev_err(dev, "iio device register failed\n");
+ goto error_buffer;
+ }
+
+ return indio_dev;
+
+error_buffer:
+ iio_triggered_buffer_cleanup(indio_dev);
+error_trigger:
+ remove_trigger(indio_dev, irq);
+error_alloc:
+ iio_device_free(indio_dev);
+
+ return NULL;
+}
+
+void mgb4_trigger_free(struct iio_dev *indio_dev)
+{
+ struct trigger_data *st = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
+ remove_trigger(indio_dev, xdma_get_user_irq(st->mgbdev->xdev, 11));
+ iio_device_free(indio_dev);
+}
diff --git a/drivers/media/pci/mgb4/mgb4_trigger.h b/drivers/media/pci/mgb4/mgb4_trigger.h
new file mode 100644
index 000000000000..9e6a651817d5
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_trigger.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+extern struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev);
+extern void mgb4_trigger_free(struct iio_dev *indio_dev);
diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c
new file mode 100644
index 000000000000..4238e2c0449d
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_vin.c
@@ -0,0 +1,663 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/pci.h>
+#include <linux/workqueue.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-dma-sg.h>
+#include <linux/dma/amd_xdma.h>
+#include "mgb4_core.h"
+#include "mgb4_dma.h"
+#include "mgb4_sysfs.h"
+#include "mgb4_io.h"
+#include "mgb4_vout.h"
+#include "mgb4_vin.h"
+
+static const struct mgb4_vin_config vin_cfg[] = {
+ {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}},
+ {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}}
+};
+
+static const struct i2c_board_info fpdl3_deser_info[] = {
+ {I2C_BOARD_INFO("deserializer1", 0x36)},
+ {I2C_BOARD_INFO("deserializer2", 0x38)},
+};
+static const struct i2c_board_info gmsl_deser_info[] = {
+ {I2C_BOARD_INFO("deserializer1", 0x4C)},
+ {I2C_BOARD_INFO("deserializer2", 0x2A)},
+};
+
+static const struct mgb4_i2c_kv fpdl3_i2c[] = {
+ {0x06, 0xFF, 0x04}, {0x07, 0xFF, 0x01}, {0x45, 0xFF, 0xE8},
+ {0x49, 0xFF, 0x00}, {0x34, 0xFF, 0x00}, {0x23, 0xFF, 0x00}
+};
+
+static const struct mgb4_i2c_kv gmsl_i2c[] = {
+ {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0},
+ {0x1CE, 0x0E, 0x0E}, {0x11, 0x05, 0x00}, {0x05, 0xC0, 0x40},
+ {0x307, 0x0F, 0x00}, {0xA0, 0x03, 0x00}, {0x3E0, 0x07, 0x07},
+ {0x308, 0x01, 0x01}, {0x10, 0x20, 0x20}, {0x300, 0x40, 0x40}
+};
+
+
+static struct mgb4_vout_dev *loopback_dev(struct mgb4_vin_dev *vindev, int i)
+{
+ struct mgb4_vout_dev *voutdev;
+ u32 config;
+
+ voutdev = vindev->mgbdev->vout[i];
+ if (!voutdev)
+ return NULL;
+
+ config = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.config);
+ if ((config & 0xc) >> 2 == vindev->config->id)
+ return voutdev;
+
+ return NULL;
+}
+
+static int loopback_active(struct mgb4_vin_dev *vindev)
+{
+ int i;
+
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+ if (loopback_dev(vindev, i))
+ return 1;
+
+ return 0;
+}
+
+static void set_loopback_padding(struct mgb4_vin_dev *vindev, u32 padding)
+{
+ struct mgb4_regs *video = &vindev->mgbdev->video;
+ struct mgb4_vout_dev *voutdev;
+ int i;
+
+ for (i = 0; i < MGB4_VOUT_DEVICES; i++) {
+ voutdev = loopback_dev(vindev, i);
+ if (voutdev)
+ mgb4_write_reg(video, voutdev->config->regs.padding, padding);
+ }
+}
+
+static void return_all_buffers(struct mgb4_vin_dev *vindev,
+ enum vb2_buffer_state state)
+{
+ struct frame_buffer *buf, *node;
+ unsigned long flags;
+
+ spin_lock_irqsave(&vindev->qlock, flags);
+ list_for_each_entry_safe(buf, node, &vindev->buf_list, list) {
+ vb2_buffer_done(&buf->vb.vb2_buf, state);
+ list_del(&buf->list);
+ }
+ spin_unlock_irqrestore(&vindev->qlock, flags);
+}
+
+static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct mgb4_vin_dev *vindev = vb2_get_drv_priv(q);
+ unsigned int size = BYTESPERLINE(vindev->width, vindev->alignment)
+ * vindev->height;
+
+ if (*nbuffers < 2)
+ *nbuffers = 2;
+
+ if (*nplanes)
+ return sizes[0] < size ? -EINVAL : 0;
+ *nplanes = 1;
+ sizes[0] = size;
+
+ return 0;
+}
+
+static int buffer_init(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct frame_buffer *buf = to_frame_buffer(vbuf);
+
+ INIT_LIST_HEAD(&buf->list);
+
+ return 0;
+}
+
+static int buffer_prepare(struct vb2_buffer *vb)
+{
+ struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue);
+ struct device *dev = &vindev->mgbdev->pdev->dev;
+ unsigned int size = BYTESPERLINE(vindev->width, vindev->alignment)
+ * vindev->height;
+
+ if (vb2_plane_size(vb, 0) < size) {
+ dev_err(dev, "buffer too small (%lu < %u)\n",
+ vb2_plane_size(vb, 0), size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, size);
+
+ return 0;
+}
+
+static void buffer_queue(struct vb2_buffer *vb)
+{
+ struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct frame_buffer *buf = to_frame_buffer(vbuf);
+ unsigned long flags;
+
+ spin_lock_irqsave(&vindev->qlock, flags);
+ list_add_tail(&buf->list, &vindev->buf_list);
+ spin_unlock_irqrestore(&vindev->qlock, flags);
+}
+
+static void stop_streaming(struct vb2_queue *vq)
+{
+ struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq);
+ int irq = xdma_get_user_irq(vindev->mgbdev->xdev, vindev->config->vin_irq);
+
+ xdma_disable_user_irq(vindev->mgbdev->xdev, irq);
+
+ if (!loopback_active(vindev))
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ 0x2, 0x0);
+
+ cancel_work_sync(&vindev->dma_work);
+ return_all_buffers(vindev, VB2_BUF_STATE_ERROR);
+}
+
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq);
+ u32 resolution = mgb4_read_reg(&vindev->mgbdev->video,
+ vindev->config->regs.resolution);
+ int irq = xdma_get_user_irq(vindev->mgbdev->xdev, vindev->config->vin_irq);
+
+ if ((vindev->width != (resolution >> 16))
+ || (vindev->height != (resolution & 0xFFFF))) {
+ return_all_buffers(vindev, VB2_BUF_STATE_ERROR);
+ return -EIO;
+ }
+
+ vindev->sequence = 0;
+
+ if (!loopback_active(vindev))
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ 0x2, 0x2);
+
+ xdma_enable_user_irq(vindev->mgbdev->xdev, irq);
+
+ return 0;
+}
+
+static const struct vb2_ops queue_ops = {
+ .queue_setup = queue_setup,
+ .buf_init = buffer_init,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .start_streaming = start_streaming,
+ .stop_streaming = stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish
+};
+
+static int fh_open(struct file *file)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+ struct mgb4_regs *video = &vindev->mgbdev->video;
+ u32 resolution, padding;
+ int ret, irq;
+
+ ret = v4l2_fh_open(file);
+ if (ret)
+ return ret;
+
+ resolution = mgb4_read_reg(video, vindev->config->regs.resolution);
+ if (resolution >= ERR_NO_REG)
+ goto error;
+
+ vindev->width = resolution >> 16;
+ vindev->height = resolution & 0xFFFF;
+ if (!vindev->width || !vindev->height)
+ goto error;
+
+ irq = xdma_get_user_irq(vindev->mgbdev->xdev, vindev->config->err_irq);
+ xdma_enable_user_irq(vindev->mgbdev->xdev, irq);
+
+ vindev->period = mgb4_read_reg(video, vindev->config->regs.frame_period);
+
+ padding = PADDING(vindev->width, vindev->alignment);
+ mgb4_write_reg(video, vindev->config->regs.padding, padding);
+ set_loopback_padding(vindev, padding);
+
+ return 0;
+
+error:
+ v4l2_fh_release(file);
+ return -EIO;
+}
+
+static int fh_release(struct file *file)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+ struct mgb4_regs *video = &vindev->mgbdev->video;
+ int irq = xdma_get_user_irq(vindev->mgbdev->xdev, vindev->config->err_irq);
+
+ xdma_disable_user_irq(vindev->mgbdev->xdev, irq);
+
+ mgb4_write_reg(video, vindev->config->regs.padding, 0);
+ set_loopback_padding(vindev, 0);
+
+ return vb2_fop_release(file);
+}
+
+static const struct v4l2_file_operations video_fops = {
+ .owner = THIS_MODULE,
+ .open = fh_open,
+ .release = fh_release,
+ .unlocked_ioctl = video_ioctl2,
+ .read = vb2_fop_read,
+ .mmap = vb2_fop_mmap,
+ .poll = vb2_fop_poll,
+};
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+
+ strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
+ strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
+ pci_name(vindev->mgbdev->pdev));
+
+ return 0;
+}
+
+static int vidioc_enum_fmt(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ if (f->index != 0)
+ return -EINVAL;
+
+ f->pixelformat = V4L2_PIX_FMT_ABGR32;
+
+ return 0;
+}
+
+static int vidioc_enum_frameintervals(struct file *file, void *priv,
+ struct v4l2_frmivalenum *ival)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+
+ if (ival->index != 0)
+ return -EINVAL;
+ if (ival->pixel_format != V4L2_PIX_FMT_ABGR32)
+ return -EINVAL;
+ if (ival->width != vindev->width || ival->height != vindev->height)
+ return -EINVAL;
+
+ ival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+ ival->discrete.numerator = vindev->period;
+ ival->discrete.denominator = 125000000;
+
+ return 0;
+}
+
+static int vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32;
+ f->fmt.pix.width = vindev->width;
+ f->fmt.pix.height = vindev->height;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW;
+ f->fmt.pix.bytesperline = BYTESPERLINE(vindev->width, vindev->alignment);
+ f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
+
+ return 0;
+}
+
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ if (i->index != 0)
+ return -EINVAL;
+
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+ strscpy(i->name, "MGB4", sizeof(i->name));
+
+ return 0;
+}
+
+static int vidioc_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+
+ if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_ABGR32)
+ return -EINVAL;
+
+ fsize->discrete.width = vindev->width;
+ fsize->discrete.height = vindev->height;
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+
+ return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ return (i == 0) ? 0 : -EINVAL;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ return -EINVAL;
+}
+
+static int vidioc_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+ struct v4l2_fract timeperframe = {
+ .numerator = vindev->period,
+ .denominator = 125000000,
+ };
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ parm->parm.capture.readbuffers = 2;
+ parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+ parm->parm.capture.timeperframe = timeperframe;
+
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops video_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt,
+ .vidioc_try_fmt_vid_cap = vidioc_fmt,
+ .vidioc_s_fmt_vid_cap = vidioc_fmt,
+ .vidioc_g_fmt_vid_cap = vidioc_fmt,
+ .vidioc_enum_framesizes = vidioc_enum_framesizes,
+ .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_g_parm = vidioc_parm,
+ .vidioc_s_parm = vidioc_parm
+};
+
+static void dma_transfer(struct work_struct *work)
+{
+ struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, dma_work);
+ struct device *dev = &vindev->mgbdev->pdev->dev;
+ struct frame_buffer *buf = 0;
+ unsigned long flags;
+ u32 addr;
+
+
+ spin_lock_irqsave(&vindev->qlock, flags);
+ if (!list_empty(&vindev->buf_list)) {
+ buf = list_first_entry(&vindev->buf_list, struct frame_buffer, list);
+ list_del_init(vindev->buf_list.next);
+ }
+ spin_unlock_irqrestore(&vindev->qlock, flags);
+
+ if (!buf)
+ return;
+
+
+ addr = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.address);
+ if (addr >= ERR_QUEUE_FULL) {
+ dev_warn(dev, "frame queue error (%d)\n", (int)addr);
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ return;
+ }
+
+ if (mgb4_dma_transfer(vindev->mgbdev, vindev->config->dma_channel,
+ false, addr, vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)) < 0) {
+ dev_warn(dev, "DMA transfer error\n");
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ } else {
+ buf->vb.vb2_buf.timestamp = ktime_get_ns();
+ buf->vb.sequence = vindev->sequence++;
+ buf->vb.field = V4L2_FIELD_NONE;
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+ }
+}
+
+static irqreturn_t vin_handler(int irq, void *ctx)
+{
+ struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx;
+
+ schedule_work(&vindev->dma_work);
+
+ mgb4_write_reg(&vindev->mgbdev->video, 0xB4, 1U<<vindev->config->vin_irq);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t err_handler(int irq, void *ctx)
+{
+ struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx;
+ struct device *dev = &vindev->mgbdev->pdev->dev;
+ struct vb2_queue *vq = &(vindev->queue);
+
+ u32 resolution = mgb4_read_reg(&vindev->mgbdev->video,
+ vindev->config->regs.resolution);
+
+ if ((vindev->width != (resolution >> 16))
+ || (vindev->height != (resolution & 0xFFFF))) {
+ dev_warn(dev, "stream changed (%ux%u -> %ux%u)\n",
+ vindev->width, vindev->height, resolution>>16,
+ resolution & 0xFFFF);
+
+ if (vb2_is_streaming(vq)) {
+ return_all_buffers(vindev, VB2_BUF_STATE_ERROR);
+ vb2_queue_error(vq);
+ }
+ }
+
+ mgb4_write_reg(&vindev->mgbdev->video, 0xB4, 1U<<vindev->config->err_irq);
+
+ return IRQ_HANDLED;
+}
+
+static int deser_init(struct mgb4_vin_dev *vindev, int id)
+{
+ int rv, addr_size;
+ size_t values_count;
+ const struct mgb4_i2c_kv *values;
+ const struct i2c_board_info *info;
+ struct device *dev = &vindev->mgbdev->pdev->dev;
+
+
+ if (MGB4_IS_GMSL(vindev->mgbdev)) {
+ info = &gmsl_deser_info[id];
+ addr_size = 16;
+ values = gmsl_i2c;
+ values_count = ARRAY_SIZE(gmsl_i2c);
+ } else {
+ info = &fpdl3_deser_info[id];
+ addr_size = 8;
+ values = fpdl3_i2c;
+ values_count = ARRAY_SIZE(fpdl3_i2c);
+ }
+
+ rv = mgb4_i2c_init(&vindev->deser, vindev->mgbdev->i2c_adap, info, addr_size);
+ if (rv < 0) {
+ dev_err(dev, "failed to create deserializer\n");
+ return rv;
+ }
+ rv = mgb4_i2c_configure(&vindev->deser, values, values_count);
+ if (rv < 0) {
+ dev_err(dev, "failed to configure deserializer\n");
+ goto err_i2c_dev;
+ }
+
+ return 0;
+
+err_i2c_dev:
+ mgb4_i2c_free(&vindev->deser);
+
+ return rv;
+}
+
+struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id)
+{
+ int rv;
+ struct device_attribute **attr, **module_attr;
+ struct mgb4_vin_dev *vindev;
+ struct pci_dev *pdev = mgbdev->pdev;
+ struct device *dev = &pdev->dev;
+ int vin_irq, err_irq;
+
+ vindev = kzalloc(sizeof(struct mgb4_vin_dev), GFP_KERNEL);
+ if (!vindev)
+ return NULL;
+
+ vindev->mgbdev = mgbdev;
+ vindev->config = &(vin_cfg[id]);
+
+ /* Frame queue*/
+ INIT_LIST_HEAD(&vindev->buf_list);
+ spin_lock_init(&vindev->qlock);
+
+ /* DMA transfer stuff */
+ INIT_WORK(&vindev->dma_work, dma_transfer);
+
+ /* IRQ callback */
+ vin_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->vin_irq);
+ rv = request_irq(vin_irq, vin_handler, 0, "mgb4-vin", vindev);
+ if (rv) {
+ dev_err(dev, "failed to register vin irq handler\n");
+ goto err_alloc;
+ }
+ /* Error IRQ callback */
+ err_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->err_irq);
+ rv = request_irq(err_irq, err_handler, 0, "mgb4-err", vindev);
+ if (rv) {
+ dev_err(dev, "failed to register err irq handler\n");
+ goto err_vin_irq;
+ }
+
+ /* V4L2 */
+ rv = v4l2_device_register(dev, &vindev->v4l2dev);
+ if (rv) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_err_irq;
+ }
+
+ mutex_init(&vindev->lock);
+
+ vindev->queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ vindev->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ;
+ vindev->queue.buf_struct_size = sizeof(struct frame_buffer);
+ vindev->queue.ops = &queue_ops;
+ vindev->queue.mem_ops = &vb2_dma_sg_memops;
+ vindev->queue.gfp_flags = GFP_DMA32;
+ vindev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ vindev->queue.min_buffers_needed = 2;
+ vindev->queue.drv_priv = vindev;
+ vindev->queue.lock = &vindev->lock;
+ vindev->queue.dev = dev;
+ rv = vb2_queue_init(&vindev->queue);
+ if (rv) {
+ dev_err(dev, "failed to initialize vb2 queue\n");
+ goto err_v4l2_dev;
+ }
+
+ snprintf(vindev->vdev.name, sizeof(vindev->vdev.name), "mgb4-in%d", id+1);
+ vindev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE
+ | V4L2_CAP_STREAMING;
+ vindev->vdev.fops = &video_fops;
+ vindev->vdev.ioctl_ops = &video_ioctl_ops;
+ vindev->vdev.release = video_device_release_empty;
+ vindev->vdev.v4l2_dev = &vindev->v4l2dev;
+ vindev->vdev.lock = &vindev->lock;
+ vindev->vdev.queue = &vindev->queue;
+ video_set_drvdata(&vindev->vdev, vindev);
+
+ rv = video_register_device(&vindev->vdev, VFL_TYPE_GRABBER, -1);
+ if (rv) {
+ dev_err(dev, "failed to register video device\n");
+ goto err_v4l2_dev;
+ }
+
+ /* Deserializer */
+ rv = deser_init(vindev, id);
+ if (rv)
+ goto err_video_dev;
+
+ /* Set FPGA regs to comply with the deserializer state */
+ mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config,
+ 1U<<9, 1U<<9);
+
+ /* Module sysfs attributes */
+ vindev->alignment = 1;
+ module_attr = MGB4_IS_GMSL(mgbdev)
+ ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs;
+ for (attr = module_attr; *attr; attr++)
+ device_create_file(&vindev->vdev.dev, *attr);
+
+ return vindev;
+
+err_video_dev:
+ video_unregister_device(&vindev->vdev);
+err_v4l2_dev:
+ v4l2_device_unregister(&vindev->v4l2dev);
+err_err_irq:
+ free_irq(err_irq, vindev);
+err_vin_irq:
+ free_irq(vin_irq, vindev);
+err_alloc:
+ kfree(vindev);
+
+ return NULL;
+}
+
+void mgb4_vin_free(struct mgb4_vin_dev *vindev)
+{
+ struct device_attribute **attr, **module_attr;
+ int vin_irq = xdma_get_user_irq(vindev->mgbdev->xdev,
+ vindev->config->vin_irq);
+ int err_irq = xdma_get_user_irq(vindev->mgbdev->xdev,
+ vindev->config->err_irq);
+
+ free_irq(vin_irq, vindev);
+ free_irq(err_irq, vindev);
+
+ module_attr = MGB4_IS_GMSL(vindev->mgbdev)
+ ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs;
+ for (attr = module_attr; *attr; attr++)
+ device_remove_file(&vindev->vdev.dev, *attr);
+
+ mgb4_i2c_free(&vindev->deser);
+ video_unregister_device(&vindev->vdev);
+ v4l2_device_unregister(&vindev->v4l2dev);
+}
diff --git a/drivers/media/pci/mgb4/mgb4_vin.h b/drivers/media/pci/mgb4/mgb4_vin.h
new file mode 100644
index 000000000000..4b01b61c3f90
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_vin.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_VIN_H__
+#define __MGB4_VIN_H__
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-ctrls.h>
+#include <media/videobuf2-core.h>
+#include "mgb4_i2c.h"
+
+struct mgb4_vin_regs {
+ u32 address;
+ u32 config;
+ u32 status;
+ u32 resolution;
+ u32 frame_period;
+ u32 sync;
+ u32 pclk;
+ u32 signal;
+ u32 signal2;
+ u32 padding;
+};
+
+struct mgb4_vin_config {
+ int id;
+ int dma_channel;
+ int vin_irq;
+ int err_irq;
+ struct mgb4_vin_regs regs;
+};
+
+struct mgb4_vin_dev {
+ struct mgb4_dev *mgbdev;
+ struct v4l2_device v4l2dev;
+ struct video_device vdev;
+ struct vb2_queue queue;
+ struct mutex lock;
+
+ spinlock_t qlock;
+ struct list_head buf_list;
+ struct work_struct dma_work;
+
+ unsigned int sequence;
+
+ u32 width;
+ u32 height;
+ u32 period;
+ u32 freq_range;
+ u32 alignment;
+
+ struct mgb4_i2c_client deser;
+
+ const struct mgb4_vin_config *config;
+};
+
+extern struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id);
+extern void mgb4_vin_free(struct mgb4_vin_dev *vindev);
+
+#endif
diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c
new file mode 100644
index 000000000000..a32023f56841
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_vout.c
@@ -0,0 +1,505 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#include <linux/pci.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-dma-sg.h>
+#include <linux/dma/amd_xdma.h>
+#include "mgb4_core.h"
+#include "mgb4_dma.h"
+#include "mgb4_sysfs.h"
+#include "mgb4_io.h"
+#include "mgb4_vout.h"
+
+#define DEFAULT_WIDTH 1280
+#define DEFAULT_HEIGHT 640
+#define DEFAULT_PERIOD (125000000 / 60)
+
+static const struct mgb4_vout_config vout_cfg[] = {
+ {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}},
+ {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}}
+};
+
+static const struct i2c_board_info fpdl3_ser_info[] = {
+ {I2C_BOARD_INFO("serializer1", 0x14)},
+ {I2C_BOARD_INFO("serializer2", 0x16)},
+};
+
+static const struct mgb4_i2c_kv fpdl3_i2c[] = {
+ {0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80}
+};
+
+static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(q);
+ unsigned long size = BYTESPERLINE(voutdev->width, voutdev->alignment)
+ * voutdev->height;
+
+ if (*nbuffers < 2)
+ *nbuffers = 2;
+
+ if (*nplanes)
+ return sizes[0] < size ? -EINVAL : 0;
+ *nplanes = 1;
+ sizes[0] = size;
+
+ return 0;
+}
+
+static int buffer_init(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct frame_buffer *buf = to_frame_buffer(vbuf);
+
+ INIT_LIST_HEAD(&buf->list);
+
+ return 0;
+}
+
+static int buffer_prepare(struct vb2_buffer *vb)
+{
+ struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vb->vb2_queue);
+ struct device *dev = &voutdev->mgbdev->pdev->dev;
+ unsigned long size = BYTESPERLINE(voutdev->width, voutdev->alignment)
+ * voutdev->height;
+
+ if (vb2_plane_size(vb, 0) < size) {
+ dev_err(dev, "buffer too small (%lu < %lu)\n",
+ vb2_plane_size(vb, 0), size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, size);
+
+ return 0;
+}
+
+static void buffer_queue(struct vb2_buffer *vb)
+{
+ struct mgb4_vout_dev *vindev = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct frame_buffer *buf = to_frame_buffer(vbuf);
+ unsigned long flags;
+
+ spin_lock_irqsave(&vindev->qlock, flags);
+ list_add_tail(&buf->list, &vindev->buf_list);
+ spin_unlock_irqrestore(&vindev->qlock, flags);
+}
+
+static void stop_streaming(struct vb2_queue *vq)
+{
+ struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq);
+ struct frame_buffer *buf, *node;
+ int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq);
+ unsigned long flags;
+
+ xdma_disable_user_irq(voutdev->mgbdev->xdev, irq);
+
+ cancel_work_sync(&voutdev->dma_work);
+
+ mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config,
+ 0x2, 0x0);
+
+ spin_lock_irqsave(&voutdev->qlock, flags);
+ list_for_each_entry_safe(buf, node, &voutdev->buf_list, list) {
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ list_del(&buf->list);
+ }
+ spin_unlock_irqrestore(&voutdev->qlock, flags);
+}
+
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq);
+ struct device *dev = &voutdev->mgbdev->pdev->dev;
+ struct frame_buffer *buf = 0;
+ struct mgb4_regs *video = &voutdev->mgbdev->video;
+ int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq);
+ u32 addr;
+
+ mgb4_mask_reg(video, voutdev->config->regs.config, 0x2, 0x2);
+
+ addr = mgb4_read_reg(video, voutdev->config->regs.address);
+ if (addr >= ERR_QUEUE_FULL) {
+ dev_err(dev, "frame queue error (%d)\n", (int)addr);
+ return -EIO;
+ }
+
+ if (!list_empty(&voutdev->buf_list)) {
+ buf = list_first_entry(&voutdev->buf_list, struct frame_buffer, list);
+ list_del_init(voutdev->buf_list.next);
+ }
+ if (!buf) {
+ dev_err(dev, "empty v4l2 queue\n");
+ return -EIO;
+ }
+
+ if (mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel,
+ true, addr, vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)) < 0) {
+ dev_warn(dev, "DMA transfer error\n");
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ } else {
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+ }
+
+ xdma_enable_user_irq(voutdev->mgbdev->xdev, irq);
+
+ return 0;
+}
+
+static const struct vb2_ops queue_ops = {
+ .queue_setup = queue_setup,
+ .buf_init = buffer_init,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .start_streaming = start_streaming,
+ .stop_streaming = stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish
+};
+
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+
+ strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
+ strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
+ pci_name(voutdev->mgbdev->pdev));
+
+ return 0;
+}
+
+
+static int vidioc_enum_fmt(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ if (f->index != 0)
+ return -EINVAL;
+
+ f->pixelformat = V4L2_PIX_FMT_ABGR32;
+
+ return 0;
+}
+
+static int vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32;
+ f->fmt.pix.width = voutdev->width;
+ f->fmt.pix.height = voutdev->height;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW;
+ f->fmt.pix.bytesperline = BYTESPERLINE(voutdev->width, voutdev->alignment);
+ f->fmt.pix.sizeimage = f->fmt.pix.width * 4 * f->fmt.pix.height;
+
+ return 0;
+}
+
+static int vidioc_g_output(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int vidioc_s_output(struct file *file, void *priv, unsigned int i)
+{
+ return i ? -EINVAL : 0;
+}
+
+static int vidioc_enum_output(struct file *file, void *priv, struct v4l2_output *out)
+{
+ if (out->index != 0)
+ return -EINVAL;
+
+ out->type = V4L2_OUTPUT_TYPE_ANALOG;
+ strscpy(out->name, "MGB4", sizeof(out->name));
+
+ return 0;
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ return -EINVAL;
+}
+
+static const struct v4l2_ioctl_ops video_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
+ .vidioc_try_fmt_vid_out = vidioc_fmt,
+ .vidioc_s_fmt_vid_out = vidioc_fmt,
+ .vidioc_g_fmt_vid_out = vidioc_fmt,
+ .vidioc_enum_output = vidioc_enum_output,
+ .vidioc_g_output = vidioc_g_output,
+ .vidioc_s_output = vidioc_s_output,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+};
+
+static int fh_open(struct file *file)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+ struct mgb4_regs *video = &voutdev->mgbdev->video;
+ u32 config, resolution;
+ int ret;
+
+ ret = v4l2_fh_open(file);
+ if (ret)
+ return ret;
+
+ config = mgb4_read_reg(video, voutdev->config->regs.config);
+ if ((config & 0xc) >> 2 != voutdev->config->id + MGB4_VIN_DEVICES)
+ goto error;
+
+ resolution = mgb4_read_reg(video, voutdev->config->regs.resolution);
+ voutdev->width = resolution >> 16;
+ voutdev->height = resolution & 0xFFFF;
+
+ mgb4_write_reg(video, voutdev->config->regs.padding,
+ PADDING(voutdev->width, voutdev->alignment));
+
+ return 0;
+
+error:
+ v4l2_fh_release(file);
+ return -EBUSY;
+}
+
+static const struct v4l2_file_operations video_fops = {
+ .owner = THIS_MODULE,
+ .open = fh_open,
+ .release = vb2_fop_release,
+ .unlocked_ioctl = video_ioctl2,
+ .write = vb2_fop_write,
+ .mmap = vb2_fop_mmap,
+ .poll = vb2_fop_poll,
+};
+
+static void dma_transfer(struct work_struct *work)
+{
+ struct mgb4_vout_dev *voutdev = container_of(work, struct mgb4_vout_dev,
+ dma_work);
+ struct device *dev = &voutdev->mgbdev->pdev->dev;
+ struct frame_buffer *buf = 0;
+ unsigned long flags;
+ u32 addr;
+
+ spin_lock_irqsave(&voutdev->qlock, flags);
+ if (!list_empty(&voutdev->buf_list)) {
+ buf = list_first_entry(&voutdev->buf_list, struct frame_buffer, list);
+ list_del_init(voutdev->buf_list.next);
+ }
+ spin_unlock_irqrestore(&voutdev->qlock, flags);
+
+ if (!buf)
+ return;
+
+ addr = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.address);
+ if (addr >= ERR_QUEUE_FULL) {
+ dev_warn(dev, "frame queue error (%d)\n", (int)addr);
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ return;
+ }
+
+ if (mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel,
+ true, addr, vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)) < 0) {
+ dev_warn(dev, "DMA transfer error\n");
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ } else {
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+ }
+}
+
+static irqreturn_t handler(int irq, void *ctx)
+{
+ struct mgb4_vout_dev *voutdev = (struct mgb4_vout_dev *)ctx;
+
+ schedule_work(&voutdev->dma_work);
+
+ mgb4_write_reg(&voutdev->mgbdev->video, 0xB4, 1U<<voutdev->config->irq);
+
+ return IRQ_HANDLED;
+}
+
+static int ser_init(struct mgb4_vout_dev *voutdev, int id)
+{
+ int rv, addr_size;
+ size_t values_count;
+ const struct mgb4_i2c_kv *values;
+ const struct i2c_board_info *info;
+ struct device *dev = &voutdev->mgbdev->pdev->dev;
+
+
+ if (MGB4_IS_GMSL(voutdev->mgbdev))
+ return 0;
+
+ info = &fpdl3_ser_info[id];
+ addr_size = 8;
+ values = fpdl3_i2c;
+ values_count = ARRAY_SIZE(fpdl3_i2c);
+
+ rv = mgb4_i2c_init(&voutdev->ser, voutdev->mgbdev->i2c_adap, info, addr_size);
+ if (rv < 0) {
+ dev_err(dev, "failed to create serializer\n");
+ return rv;
+ }
+ rv = mgb4_i2c_configure(&voutdev->ser, values, values_count);
+ if (rv < 0) {
+ dev_err(dev, "failed to configure serializer\n");
+ goto err_i2c_dev;
+ }
+
+ return 0;
+
+err_i2c_dev:
+ mgb4_i2c_free(&voutdev->ser);
+
+ return rv;
+}
+
+struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id)
+{
+ int rv, irq;
+ struct device_attribute **attr, **module_attr;
+ struct mgb4_vout_dev *voutdev;
+ struct mgb4_regs *video;
+ struct pci_dev *pdev = mgbdev->pdev;
+ struct device *dev = &pdev->dev;
+
+ voutdev = kzalloc(sizeof(struct mgb4_vout_dev), GFP_KERNEL);
+ if (!voutdev)
+ return NULL;
+
+ voutdev->mgbdev = mgbdev;
+ voutdev->config = &(vout_cfg[id]);
+ video = &voutdev->mgbdev->video;
+
+ /* Frame queue*/
+ INIT_LIST_HEAD(&voutdev->buf_list);
+ spin_lock_init(&voutdev->qlock);
+
+ /* DMA transfer stuff */
+ INIT_WORK(&voutdev->dma_work, dma_transfer);
+
+ /* IRQ callback */
+ irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq);
+ rv = request_irq(irq, handler, 0, "mgb4-vout", voutdev);
+ if (rv) {
+ dev_err(dev, "failed to register irq handler\n");
+ goto err_alloc;
+ }
+
+ /* V4L2 */
+ rv = v4l2_device_register(dev, &voutdev->v4l2dev);
+ if (rv) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_irq;
+ }
+
+ mutex_init(&voutdev->lock);
+
+ voutdev->queue.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ voutdev->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_WRITE;
+ voutdev->queue.buf_struct_size = sizeof(struct frame_buffer);
+ voutdev->queue.ops = &queue_ops;
+ voutdev->queue.mem_ops = &vb2_dma_sg_memops;
+ voutdev->queue.gfp_flags = GFP_DMA32;
+ voutdev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ voutdev->queue.min_buffers_needed = 2;
+ voutdev->queue.drv_priv = voutdev;
+ voutdev->queue.lock = &voutdev->lock;
+ voutdev->queue.dev = dev;
+ rv = vb2_queue_init(&voutdev->queue);
+ if (rv) {
+ dev_err(dev, "failed to initialize vb2 queue\n");
+ goto err_v4l2_dev;
+ }
+
+ snprintf(voutdev->vdev.name, sizeof(voutdev->vdev.name), "mgb4-out%d", id+1);
+ voutdev->vdev.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE
+ | V4L2_CAP_STREAMING;
+ voutdev->vdev.vfl_dir = VFL_DIR_TX;
+ voutdev->vdev.fops = &video_fops;
+ voutdev->vdev.ioctl_ops = &video_ioctl_ops;
+ voutdev->vdev.release = video_device_release_empty;
+ voutdev->vdev.v4l2_dev = &voutdev->v4l2dev;
+ voutdev->vdev.lock = &voutdev->lock;
+ voutdev->vdev.queue = &voutdev->queue;
+ video_set_drvdata(&voutdev->vdev, voutdev);
+
+ rv = video_register_device(&voutdev->vdev, VFL_TYPE_GRABBER, -1);
+ if (rv) {
+ dev_err(dev, "failed to register video device\n");
+ goto err_v4l2_dev;
+ }
+
+ /* Serializer */
+ rv = ser_init(voutdev, id);
+ if (rv)
+ goto err_video_dev;
+
+ /* Set the FPGA registers default values */
+ mgb4_mask_reg(video, voutdev->config->regs.config, 0xc,
+ (voutdev->config->id + MGB4_VIN_DEVICES) << 2);
+ mgb4_write_reg(video, voutdev->config->regs.resolution,
+ (DEFAULT_WIDTH << 16) | DEFAULT_HEIGHT);
+ mgb4_write_reg(video, voutdev->config->regs.frame_period,
+ DEFAULT_PERIOD);
+
+ /* Module sysfs attributes */
+ voutdev->alignment = 1;
+ module_attr = MGB4_IS_GMSL(mgbdev)
+ ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs;
+ for (attr = module_attr; *attr; attr++)
+ device_create_file(&voutdev->vdev.dev, *attr);
+
+ /* Set the output frequency according to the FPGA defaults */
+ voutdev->freq = 70000;
+
+ return voutdev;
+
+err_video_dev:
+ video_unregister_device(&voutdev->vdev);
+err_v4l2_dev:
+ v4l2_device_unregister(&voutdev->v4l2dev);
+err_irq:
+ free_irq(irq, voutdev);
+err_alloc:
+ kfree(voutdev);
+
+ return NULL;
+}
+
+void mgb4_vout_free(struct mgb4_vout_dev *voutdev)
+{
+ struct device_attribute **attr, **module_attr;
+ int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq);
+
+ free_irq(irq, voutdev);
+
+ module_attr = MGB4_IS_GMSL(voutdev->mgbdev)
+ ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs;
+ for (attr = module_attr; *attr; attr++)
+ device_remove_file(&voutdev->vdev.dev, *attr);
+
+ mgb4_i2c_free(&voutdev->ser);
+ video_unregister_device(&voutdev->vdev);
+ v4l2_device_unregister(&voutdev->v4l2dev);
+}
diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h
new file mode 100644
index 000000000000..902b6b8deb21
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_vout.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021-2022 Digiteq Automotive
+ * author: Martin Tuma <martin.tuma@xxxxxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __MGB4_VOUT_H__
+#define __MGB4_VOUT_H__
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-ctrls.h>
+#include <media/videobuf2-core.h>
+#include "mgb4_i2c.h"
+
+struct mgb4_vout_regs {
+ u32 address;
+ u32 config;
+ u32 status;
+ u32 resolution;
+ u32 frame_period;
+ u32 hsync;
+ u32 vsync;
+ u32 padding;
+};
+
+struct mgb4_vout_config {
+ int id;
+ int dma_channel;
+ int irq;
+ struct mgb4_vout_regs regs;
+};
+
+struct mgb4_vout_dev {
+ struct mgb4_dev *mgbdev;
+ struct v4l2_device v4l2dev;
+ struct video_device vdev;
+ struct vb2_queue queue;
+ struct mutex lock;
+
+ spinlock_t qlock;
+ struct list_head buf_list;
+ struct work_struct dma_work;
+
+ u32 width;
+ u32 height;
+ u32 freq;
+ u32 alignment;
+
+ struct mgb4_i2c_client ser;
+
+ const struct mgb4_vout_config *config;
+};
+
+extern struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id);
+extern void mgb4_vout_free(struct mgb4_vout_dev *voutdev);
+
+#endif