Re: [PATCH v7 4/7] staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw-hdmi

From: Andy Yan
Date: Tue Nov 11 2014 - 09:42:16 EST


On 2014å11æ11æ 22:16, Zubair Lutfullah Kakakhel wrote:
Hi Andy,

On 11/11/14 12:53, Andy Yan wrote:
the original imx hdmi driver is under staging/imx-drm,
which depends on imx-drm, so move the imx hdmi drvier out
Spelling mistake. ^'driver'

to drm/bridge and rename imx-hdmi to dw-hdmi
^dw_hdmi
thanks , these will be fixed in v8
Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx>

---

Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2:
- use git format -M to generate these patch

drivers/gpu/drm/bridge/Kconfig | 5 +
drivers/gpu/drm/bridge/Makefile | 1 +
.../imx-hdmi.c => gpu/drm/bridge/dw_hdmi.c} | 281 +++++++++++----------
.../imx-hdmi.h => gpu/drm/bridge/dw_hdmi.h} | 46 +---
drivers/staging/imx-drm/Kconfig | 1 +
drivers/staging/imx-drm/Makefile | 2 +-
drivers/staging/imx-drm/dw_hdmi-imx.c | 70 ++---
include/drm/bridge/dw_hdmi.h | 57 +++++
8 files changed, 243 insertions(+), 220 deletions(-)
rename drivers/{staging/imx-drm/imx-hdmi.c => gpu/drm/bridge/dw_hdmi.c} (83%)
rename drivers/{staging/imx-drm/imx-hdmi.h => gpu/drm/bridge/dw_hdmi.h} (97%)
create mode 100644 include/drm/bridge/dw_hdmi.h

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 884923f..26162ef 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -3,3 +3,8 @@ config DRM_PTN3460
depends on DRM
select DRM_KMS_HELPER
---help---
+
+config DRM_DW_HDMI
+ bool "Synopsys DesignWare High-Definition Multimedia Interface"
+ depends on DRM
+ select DRM_KMS_HELPER
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index b4733e1..d8a8cfd 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -1,3 +1,4 @@
ccflags-y := -Iinclude/drm
obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
+obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
diff --git a/drivers/staging/imx-drm/imx-hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
similarity index 83%
rename from drivers/staging/imx-drm/imx-hdmi.c
rename to drivers/gpu/drm/bridge/dw_hdmi.c
index c7e5f12..e9f0dfe 100644
--- a/drivers/staging/imx-drm/imx-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -6,8 +6,7 @@
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
- * SH-Mobile High-Definition Multimedia Interface (HDMI) driver
- * for SLISHDMI13T and SLIPHDMIT IP cores
...

diff --git a/drivers/staging/imx-drm/imx-hdmi.h b/drivers/gpu/drm/bridge/dw_hdmi.h
similarity index 97%
rename from drivers/staging/imx-drm/imx-hdmi.h
rename to drivers/gpu/drm/bridge/dw_hdmi.h
index e67d60d..b8412a9 100644
--- a/drivers/staging/imx-drm/imx-hdmi.h
+++ b/drivers/gpu/drm/bridge/dw_hdmi.h
@@ -7,8 +7,8 @@
* (at your option) any later version.
*/
-#ifndef __IMX_HDMI_H__
-#define __IMX_HDMI_H__
+#ifndef __DW_HDMI__
+#define __DW_HDMI__
/* Identification Registers */
#define HDMI_DESIGN_ID 0x0000
@@ -1030,46 +1030,4 @@ enum {
HDMI_A_VIDPOLCFG_HSYNCPOL_ACTIVE_LOW = 0x0,
};
-enum {
- RES_8,
- RES_10,
- RES_12,
- RES_MAX,
-};
-
-enum imx_hdmi_devtype {
- IMX6Q_HDMI,
- IMX6DL_HDMI,
-};
-
-struct mpll_config {
- unsigned long mpixelclock;
- struct {
- u16 cpce;
- u16 gmp;
- } res[RES_MAX];
-};
-
-struct curr_ctrl {
- unsigned long mpixelclock;
- u16 curr[RES_MAX];
-};
-
-struct imx_hdmi_plat_data {
- void * (*setup)(struct platform_device *pdev);
- void (*exit)(void *priv);
- void (*encoder_commit)(void *priv, struct drm_encoder *encoder);
- void (*encoder_prepare)(struct drm_connector *connector,
- struct drm_encoder *encoder);
- enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
- struct drm_display_mode *mode);
- const struct mpll_config *mpll_cfg;
- const struct curr_ctrl *cur_ctr;
- enum imx_hdmi_devtype dev_type;
-
-};
-
-int imx_hdmi_platform_register(struct platform_device *pdev,
- const struct imx_hdmi_plat_data *plat_data);
-int imx_hdmi_platform_unregister(struct platform_device *pdev);
Doesn't this change belong in the previous splitting patch?
in previous splitting patch we put these in staging/imx-drm/imx-hdmi.h
now we move these common struct to include/drm/bridge/dw-hdmi.h

#endif /* __IMX_HDMI_H__ */
diff --git a/drivers/staging/imx-drm/Kconfig b/drivers/staging/imx-drm/Kconfig
index ab31848..560e1d3 100644
--- a/drivers/staging/imx-drm/Kconfig
+++ b/drivers/staging/imx-drm/Kconfig
@@ -50,5 +50,6 @@ config DRM_IMX_IPUV3
config DRM_IMX_HDMI
tristate "Freescale i.MX DRM HDMI"
depends on DRM_IMX
+ select DRM_DW_HDMI
help
Choose this if you want to use HDMI on i.MX6.
diff --git a/drivers/staging/imx-drm/Makefile b/drivers/staging/imx-drm/Makefile
index 809027d..f3ecd89 100644
--- a/drivers/staging/imx-drm/Makefile
+++ b/drivers/staging/imx-drm/Makefile
@@ -9,4 +9,4 @@ obj-$(CONFIG_DRM_IMX_LDB) += imx-ldb.o
imx-ipuv3-crtc-objs := ipuv3-crtc.o ipuv3-plane.o
obj-$(CONFIG_DRM_IMX_IPUV3) += imx-ipuv3-crtc.o
-obj-$(CONFIG_DRM_IMX_HDMI) += imx-hdmi.o dw_hdmi-imx.o
+obj-$(CONFIG_DRM_IMX_HDMI) += dw_hdmi-imx.o
diff --git a/drivers/staging/imx-drm/dw_hdmi-imx.c b/drivers/staging/imx-drm/dw_hdmi-imx.c
index 0db978e..4b48ea6 100644
--- a/drivers/staging/imx-drm/dw_hdmi-imx.c
+++ b/drivers/staging/imx-drm/dw_hdmi-imx.c
All other files in imx-drm/ are named imx-xyz.

no underscore either.

I wonder if they are ok with dw_hdmi-imx.c

How about imx-dw-hdmi.c
and imx-dw-hdmi.h ?
I see some dw ip drivers like dw-mmc and dwmac have
name style like dw_xxx.c for core driver, dw_xx_yy.c
for platform driver, so I keep the same with it.
@@ -10,14 +10,14 @@
#include <linux/platform_device.h>
#include <linux/mfd/syscon.h>
#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
+#include <drm/bridge/dw_hdmi.h>
#include <video/imx-ipu-v3.h>
#include <linux/regmap.h>
#include <linux/clk.h>
#include "imx-drm.h"
-#include "imx-hdmi.h"
-static const struct of_device_id imx_hdmi_imx_ids[] = {
+static const struct of_device_id dw_hdmi_imx_ids[] = {
{ .compatible = "fsl,imx6q-hdmi",
.data = &imx6q_hdmi_drv_data
Weren't there multiple compatible strings in imx-hdmi.c?
imx6q , imx6dl use different compatible strings for different
configuration in original imx-hdmi.c

}, {
@@ -178,38 +178,38 @@ static const struct of_device_id imx_hdmi_imx_ids[] = {
},
{},
};
-MODULE_DEVICE_TABLE(of, imx_hdmi_imx_dt_ids);
+MODULE_DEVICE_TABLE(of, dw_hdmi_imx_dt_ids);
...

diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
new file mode 100644
index 0000000..6683b63
--- /dev/null
+++ b/include/drm/bridge/dw_hdmi.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __DW_HDMI_H__
+#define __DW_HDMI_H__
+
+#include <drm/drmP.h>
+
+enum {
+ RES_8,
+ RES_10,
+ RES_12,
+ RES_MAX,
+};
+
+enum dw_hdmi_devtype {
+ IMX6Q_HDMI,
+ IMX6DL_HDMI,
+};
This enum going into dw_hdmi.
Does this mean that dw hdmi code still has some SoC specific things left?
Where is this needed.

yes, imx6q and imx6dl have different configuration in function
dw_hdmi_clear_overflow, as for rk3288, function hdmi_phy_configure
also have different with power control of some block.
+
+struct mpll_config {
+ unsigned long mpixelclock;
+ struct {
+ u16 cpce;
+ u16 gmp;
+ } res[RES_MAX];
+};
+
+struct curr_ctrl {
+ unsigned long mpixelclock;
+ u16 curr[RES_MAX];
+};
+
+struct dw_hdmi_plat_data {
+ void * (*setup)(struct platform_device *pdev);
+ void (*exit)(void *priv);
+ void (*encoder_commit)(void *priv, struct drm_encoder *encoder);
+ void (*encoder_prepare)(struct drm_connector *connector,
+ struct drm_encoder *encoder);
+ enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
+ struct drm_display_mode *mode);
+ const struct mpll_config *mpll_cfg;
+ const struct curr_ctrl *cur_ctr;
+ enum dw_hdmi_devtype dev_type;
+
+};
+
+int dw_hdmi_platform_register(struct platform_device *pdev,
+ const struct dw_hdmi_plat_data *plat_data);
+int dw_hdmi_platform_unregister(struct platform_device *pdev);
+#endif /* __IMX_HDMI_H__ */

Regards
ZubairLK

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