[PATCH 1/3] drm/db9000: Add Digital Blocks DB9000 LCD Controller
From: Gareth Williams
Date: Mon Apr 27 2020 - 04:22:24 EST
Add DRM support for the Digital Blocks DB9000 LCD Controller
with the Renesas RZ/N1 specific changes.
Signed-off-by: Gareth Williams <gareth.williams.jx@xxxxxxxxxxx>
---
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/digital-blocks/Kconfig | 13 +
drivers/gpu/drm/digital-blocks/Makefile | 3 +
drivers/gpu/drm/digital-blocks/db9000-du.c | 953 +++++++++++++++++++++++++++++
drivers/gpu/drm/digital-blocks/db9000-du.h | 192 ++++++
6 files changed, 1164 insertions(+)
create mode 100644 drivers/gpu/drm/digital-blocks/Kconfig
create mode 100644 drivers/gpu/drm/digital-blocks/Makefile
create mode 100644 drivers/gpu/drm/digital-blocks/db9000-du.c
create mode 100644 drivers/gpu/drm/digital-blocks/db9000-du.h
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 3c88420..159832d 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -280,6 +280,8 @@ source "drivers/gpu/drm/mgag200/Kconfig"
source "drivers/gpu/drm/cirrus/Kconfig"
+source "drivers/gpu/drm/digital-blocks/Kconfig"
+
source "drivers/gpu/drm/armada/Kconfig"
source "drivers/gpu/drm/atmel-hlcdc/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 9f0d2ee..f525807 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -72,6 +72,7 @@ obj-$(CONFIG_DRM_MGAG200) += mgag200/
obj-$(CONFIG_DRM_V3D) += v3d/
obj-$(CONFIG_DRM_VC4) += vc4/
obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus/
+obj-$(CONFIG_DRM_DB9000) += digital-blocks/
obj-$(CONFIG_DRM_SIS) += sis/
obj-$(CONFIG_DRM_SAVAGE)+= savage/
obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/
diff --git a/drivers/gpu/drm/digital-blocks/Kconfig b/drivers/gpu/drm/digital-blocks/Kconfig
new file mode 100644
index 0000000..436a7c0
--- /dev/null
+++ b/drivers/gpu/drm/digital-blocks/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+config DRM_DB9000
+ bool "DRM Support for DB9000 LCD Controller"
+ depends on DRM && (ARCH_MULTIPLATFORM || COMPILE_TEST)
+ select DRM_KMS_HELPER
+ select DRM_GEM_CMA_HELPER
+ select DRM_KMS_CMA_HELPER
+ select DRM_PANEL_BRIDGE
+ select VIDEOMODE_HELPERS
+ select FB_PROVIDE_GET_FB_UNMAPPED_AREA if FB
+
+ help
+ Enable DRM support for the DB9000 LCD controller.
diff --git a/drivers/gpu/drm/digital-blocks/Makefile b/drivers/gpu/drm/digital-blocks/Makefile
new file mode 100644
index 0000000..9f78492
--- /dev/null
+++ b/drivers/gpu/drm/digital-blocks/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_DRM_DB9000) += db9000-du.o
diff --git a/drivers/gpu/drm/digital-blocks/db9000-du.c b/drivers/gpu/drm/digital-blocks/db9000-du.c
new file mode 100644
index 0000000..d84d446
--- /dev/null
+++ b/drivers/gpu/drm/digital-blocks/db9000-du.c
@@ -0,0 +1,953 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2019 Renesas Electronics Europe Ltd.
+ *
+ * Author: Gareth Williams <gareth.williams.jx@xxxxxxxxxxx>
+ *
+ * Based on ltdc.c
+ * Copyright (C) STMicroelectronics SA 2017
+ *
+ * Authors: Philippe Cornu <philippe.cornu@xxxxxx>
+ * Yannick Fertre <yannick.fertre@xxxxxx>
+ * Fabien Dessenne <fabien.dessenne@xxxxxx>
+ * Mickael Reulier <mickael.reulier@xxxxxx>
+ */
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_device.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_drv.h>
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/pwm.h>
+#include <linux/reset.h>
+
+#include <video/display_timing.h>
+#include <video/videomode.h>
+
+#include "db9000-du.h"
+
+#define NR_CRTC 1
+#define DB9000_FB_MAX_WIDTH 4095
+#define DB9000_FB_MAX_HEIGHT 4095
+#define RZN1_REGS ((void *) 1)
+
+static const u32 db9000_fmts[] = {
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_BGR888,
+ DRM_FORMAT_BGR565,
+ DRM_FORMAT_XBGR1555,
+ DRM_FORMAT_XBGR8888
+};
+
+static u32 reg_read(void __iomem *base, u32 reg)
+{
+ return readl(base + reg);
+}
+
+static void reg_write(void __iomem *base, u32 reg, u32 val)
+{
+ writel(val, base + reg);
+}
+
+static struct db9000_device *crtc_to_db9000(struct drm_crtc *crtc)
+{
+ return container_of(crtc->dev, struct db9000_device, drm);
+}
+
+static struct db9000_device *plane_to_db9000(struct drm_plane *plane)
+{
+ return container_of(plane->dev, struct db9000_device, drm);
+}
+
+static struct db9000_device *pwm_chip_to_db9000(struct pwm_chip *chip)
+{
+ return container_of(chip, struct db9000_device, pwm);
+}
+
+void db9000_bpp_setup(struct db9000_device *db9000_dev, int bpp, int bus_width,
+ bool pixelSelect)
+{
+ u32 format;
+ u32 reg_cr1 = reg_read(db9000_dev->regs, DB9000_CR1);
+
+ /* reset the BPP bits */
+ reg_cr1 &= ~DB9000_CR1_BPP(7);
+ reg_cr1 &= ~DB9000_CR1_OPS(5);
+ reg_cr1 &= ~DB9000_CR1_OPS(1);
+ db9000_dev->bpp = bpp;
+
+ switch (bpp) {
+ case 16:
+ if (pixelSelect) {
+ reg_cr1 |= DB9000_CR1_OPS(5);
+ reg_cr1 |= DB9000_CR1_OPS(1);
+ }
+
+ format = DB9000_CR1_BPP(DB9000_CR1_BPP_16bpp);
+ break;
+ case 24:
+ case 32:
+ default:
+ format = DB9000_CR1_BPP(DB9000_CR1_BPP_24bpp);
+ }
+
+ if (bpp <= 16 && bus_width == 24)
+ reg_cr1 |= DB9000_CR1_OPS(2);
+ else
+ reg_cr1 &= ~DB9000_CR1_OPS(2);
+
+ if (bpp == 24)
+ reg_cr1 |= DB9000_CR1_FBP;
+ else
+ reg_cr1 &= ~DB9000_CR1_FBP;
+
+ reg_cr1 |= format;
+ reg_write(db9000_dev->regs, DB9000_CR1, reg_cr1);
+}
+
+void db9000_toggle_controller(struct db9000_device *db9000_dev, bool on)
+{
+ u32 isr;
+ u32 reg_cr1 = reg_read(db9000_dev->regs, DB9000_CR1);
+ unsigned long flags;
+
+ if (on) {
+ /* Enable controller */
+ reg_cr1 |= DB9000_CR1_LCE;
+ reg_cr1 |= DB9000_CR1_LPE;
+
+ /* DMA Burst Size */
+ reg_cr1 |= DB9000_CR1_FDW(2);
+
+ /* Release pixel clock domain reset */
+ reg_write(db9000_dev->regs, DB9000_PCTR, DB9000_PCTR_PCR);
+
+ /* Enable BAU event for IRQ */
+ spin_lock_irqsave(&db9000_dev->lock, flags);
+ isr = reg_read(db9000_dev->regs, DB9000_ISR);
+ reg_write(db9000_dev->regs, DB9000_ISR, isr | DB9000_ISR_BAU);
+ reg_write(db9000_dev->regs, DB9000_IMR, DB9000_IMR_BAUM);
+ spin_unlock_irqrestore(&db9000_dev->lock, flags);
+
+ } else {
+ /* Disable controller */
+ reg_cr1 &= ~DB9000_CR1_LCE;
+ reg_cr1 &= ~DB9000_CR1_LPE;
+ }
+
+ reg_write(db9000_dev->regs, DB9000_CR1, reg_cr1);
+}
+
+/* CRTC Functions */
+static void db9000_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ struct db9000_device *db9000_dev = crtc_to_db9000(crtc);
+ u32 imr;
+
+ /* Enable IRQ */
+ imr = reg_read(db9000_dev->regs, DB9000_IMR);
+ reg_write(db9000_dev->regs, DB9000_IMR, imr | DB9000_IMR_BAUM);
+}
+
+static void db9000_crtc_atomic_disable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ struct db9000_device *db9000_dev = crtc_to_db9000(crtc);
+ u32 imr;
+
+ /* disable IRQ */
+ imr = reg_read(db9000_dev->regs, DB9000_IMR);
+ reg_write(db9000_dev->regs, DB9000_IMR, imr & ~DB9000_IMR_BAUM);
+}
+
+static void db9000_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+ struct drm_display_mode *mode = &crtc->state->adjusted_mode;
+ struct db9000_device *db9000_dev = crtc_to_db9000(crtc);
+ struct videomode vm;
+ int bus_flags = db9000_dev->connector->display_info.bus_flags;
+ u32 vtr1, vtr2, hvter, htr, hpplor, dear_offset;
+ u32 reg_cr1 = reg_read(db9000_dev->regs, DB9000_CR1);
+
+ drm_display_mode_to_videomode(mode, &vm);
+
+ if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH)
+ reg_cr1 |= DB9000_CR1_HSP;
+ else
+ reg_cr1 &= ~DB9000_CR1_HSP;
+
+ if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH)
+ reg_cr1 |= DB9000_CR1_VSP;
+ else
+ reg_cr1 &= ~DB9000_CR1_VSP;
+
+ if (bus_flags & DRM_BUS_FLAG_DE_HIGH)
+ reg_cr1 |= DB9000_CR1_DEP;
+ else
+ reg_cr1 &= ~DB9000_CR1_DEP;
+
+ /* Horizontal Timing Register */
+ htr = DB9000_HTR_HSW(vm.hsync_len) |
+ DB9000_HTR_HBP(vm.hback_porch) |
+ /* Pixels per line */
+ DB9000_HTR_HFP(vm.hfront_porch);
+
+ /* Horizontal Pixels-Per-Line Override */
+ hpplor = vm.hactive | DB9000_HPOE;
+
+ /* Vertical timing registers setup */
+ vtr1 = DB9000_VTR1_VBP(vm.vback_porch) |
+ DB9000_VTR1_VFP(vm.vfront_porch) |
+ DB9000_VTR1_VSW(vm.vsync_len);
+
+ vtr2 = DB9000_VTR2_LPP(vm.vactive);
+
+ /* Vertical and Horizontal Timing Extension write */
+ hvter = DB9000_HVTER_HFPE(vm.hfront_porch) |
+ DB9000_HVTER_HBPE(vm.hback_porch) |
+ DB9000_HVTER_VFPE(vm.vback_porch) |
+ DB9000_HVTER_VBPE(vm.vfront_porch);
+
+ db9000_dev->frame_size = vm.hactive * vm.vactive;
+
+ /* DEAR register must be configured to the block end + 8 */
+ dear_offset =
+ (db9000_dev->frame_size * db9000_dev->bpp) / 8 + 8;
+
+ reg_write(db9000_dev->regs, DB9000_CR1, reg_cr1);
+ reg_write(db9000_dev->regs, DB9000_HTR, htr);
+ reg_write(db9000_dev->regs, DB9000_VTR1, vtr1);
+ reg_write(db9000_dev->regs, DB9000_VTR2, vtr2);
+ reg_write(db9000_dev->regs, DB9000_HPPLOR, hpplor);
+ reg_write(db9000_dev->regs, DB9000_HVTER, hvter);
+
+ DRM_DEBUG_DRIVER("CRTC:%d mode:%s\n", crtc->base.id, mode->name);
+ DRM_DEBUG_DRIVER("Video mode: %dx%d", vm.hactive, vm.vactive);
+ DRM_DEBUG_DRIVER(" hfp %d hbp %d hsl %d vfp %d vbp %d vsl %d\n",
+ vm.hfront_porch, vm.hback_porch, vm.hsync_len,
+ vm.vfront_porch, vm.vback_porch, vm.vsync_len);
+}
+
+static void db9000_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+ struct drm_pending_vblank_event *event = crtc->state->event;
+
+ if (event) {
+ crtc->state->event = NULL;
+
+ spin_lock_irq(&crtc->dev->event_lock);
+ drm_crtc_send_vblank_event(crtc, event);
+ spin_unlock_irq(&crtc->dev->event_lock);
+ }
+}
+
+static const struct drm_crtc_helper_funcs db9000_crtc_helper_funcs = {
+ .mode_set_nofb = db9000_crtc_mode_set_nofb,
+ .atomic_flush = db9000_crtc_atomic_flush,
+ .atomic_enable = db9000_crtc_atomic_enable,
+ .atomic_disable = db9000_crtc_atomic_disable,
+};
+
+static const struct drm_crtc_funcs db9000_crtc_funcs = {
+ .destroy = drm_crtc_cleanup,
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .gamma_set = drm_atomic_helper_legacy_gamma_set,
+};
+
+/*
+ * DRM_PLANE
+ */
+static void db9000_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *oldstate)
+{
+ struct db9000_device *db9000_dev = plane_to_db9000(plane);
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = state->fb;
+ unsigned long flags;
+ u32 isr, paddr, dear_offset;
+ u32 format;
+
+ if (!state->crtc || !fb) {
+ DRM_DEBUG_DRIVER("fb or crtc NULL\n");
+ return;
+ }
+
+ format = fb->format->format;
+
+ /* The single plane is turning visible, so turn on the display */
+ if (!oldstate->visible && state->visible)
+ db9000_toggle_controller(db9000_dev, false);
+
+ /* The plane is no longer visible */
+ if (oldstate->visible && !state->visible)
+ db9000_toggle_controller(db9000_dev, true);
+
+ /* Check for format changes */
+ if (format == DRM_FORMAT_RGB565 || format == DRM_FORMAT_BGR565)
+ db9000_bpp_setup(db9000_dev, 16, db9000_dev->bus_width, false);
+ else if (format == DRM_FORMAT_XRGB1555 || format == DRM_FORMAT_XBGR1555)
+ db9000_bpp_setup(db9000_dev, 16, db9000_dev->bus_width, true);
+ else if (format == DRM_FORMAT_RGB888 || format == DRM_FORMAT_BGR888)
+ db9000_bpp_setup(db9000_dev, 24, db9000_dev->bus_width, false);
+ else if (format == DRM_FORMAT_XRGB8888 || format == DRM_FORMAT_XBGR8888)
+ db9000_bpp_setup(db9000_dev, 32, db9000_dev->bus_width, false);
+
+ dear_offset = (db9000_dev->frame_size * db9000_dev->bpp) / 8 + 8;
+
+ /* The frame buffer has changed, so get the new FB address */
+ if (oldstate->fb != state->fb || state->crtc->state->mode_changed) {
+ paddr = (u32)drm_fb_cma_get_gem_addr(fb, state, 0);
+
+ DRM_DEBUG_DRIVER("fb: phys 0x%08x\n", paddr);
+ reg_write(db9000_dev->regs, DB9000_DBAR, paddr);
+ reg_write(db9000_dev->regs, DB9000_DEAR,
+ paddr + dear_offset);
+ }
+
+ /* Enable BAU event */
+ spin_lock_irqsave(&db9000_dev->lock, flags);
+ isr = reg_read(db9000_dev->regs, DB9000_ISR);
+ reg_write(db9000_dev->regs, DB9000_ISR, isr | DB9000_ISR_BAU);
+ reg_write(db9000_dev->regs, DB9000_IMR, DB9000_IMR_BAUM);
+ spin_unlock_irqrestore(&db9000_dev->lock, flags);
+
+ db9000_dev->plane_fpsi->counter++;
+
+ if (isr & DB9000_ISR_MBE) {
+ if (isr & DB9000_ISR_OFU)
+ DRM_ERROR("Output FIFO Underrun\n");
+
+ if (isr & DB9000_ISR_OFO)
+ DRM_ERROR("Output FIFO Overrun\n");
+
+ if (isr & DB9000_ISR_IFU)
+ DRM_ERROR("Input FIFO Underrun\n");
+
+ if (isr & DB9000_ISR_IFO)
+ DRM_ERROR("Input FIFO Overrun\n");
+ }
+}
+
+static void db9000_plane_atomic_print_state(struct drm_printer *p,
+ const struct drm_plane_state *state)
+{
+ struct drm_plane *plane = state->plane;
+ struct db9000_device *db9000_dev = plane_to_db9000(plane);
+ struct fps_info *fpsi = db9000_dev->plane_fpsi;
+ int ms_since_last;
+ ktime_t now;
+
+ now = ktime_get();
+ ms_since_last = ktime_to_ms(ktime_sub(now, fpsi->last_timestamp));
+
+ drm_printf(p, "\tuser_updates=%dfps\n",
+ DIV_ROUND_CLOSEST(fpsi->counter * 1000, ms_since_last));
+
+ fpsi->last_timestamp = now;
+ fpsi->counter = 0;
+}
+
+static const struct drm_plane_funcs db9000_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .destroy = drm_plane_cleanup,
+ .reset = drm_atomic_helper_plane_reset,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .atomic_print_state = db9000_plane_atomic_print_state,
+};
+
+static const struct drm_plane_helper_funcs db9000_plane_helper_funcs = {
+ .atomic_update = db9000_plane_atomic_update,
+};
+
+static struct drm_plane *db9000_plane_create(struct drm_device *ddev,
+ enum drm_plane_type type)
+{
+ struct device *dev = ddev->dev;
+ struct drm_plane *plane;
+ int ret;
+
+ plane = devm_kzalloc(dev, sizeof(*plane), GFP_KERNEL);
+ if (!plane)
+ return NULL;
+
+ ret = drm_universal_plane_init(ddev, plane, NR_CRTC,
+ &db9000_plane_funcs,
+ db9000_fmts,
+ ARRAY_SIZE(db9000_fmts), NULL,
+ type, "rzn1_primary_rgb");
+ if (ret < 0)
+ return NULL;
+
+ drm_plane_helper_add(plane, &db9000_plane_helper_funcs);
+
+ DRM_DEBUG_DRIVER("plane:%d created\n", plane->base.id);
+
+ return plane;
+}
+
+static void db9000_plane_destroy_all(struct drm_device *ddev)
+{
+ struct drm_plane *plane, *plane_temp;
+
+ list_for_each_entry_safe(plane, plane_temp,
+ &ddev->mode_config.plane_list, head)
+ drm_plane_cleanup(plane);
+}
+
+static int db9000_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
+{
+ struct drm_plane *primary;
+ int ret;
+
+ primary = db9000_plane_create(ddev, DRM_PLANE_TYPE_PRIMARY);
+ if (!primary) {
+ DRM_ERROR("Can not create primary plane\n");
+ return -EINVAL;
+ }
+
+ ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL,
+ &db9000_crtc_funcs, NULL);
+ if (ret) {
+ DRM_ERROR("Can not initialize CRTC\n");
+ goto cleanup;
+ }
+
+ drm_crtc_helper_add(crtc, &db9000_crtc_helper_funcs);
+ DRM_DEBUG_DRIVER("CRTC:%d created\n", crtc->base.id);
+ return 0;
+
+cleanup:
+ db9000_plane_destroy_all(ddev);
+ return ret;
+}
+
+/*
+ * DRM_ENCODER
+ */
+static const struct drm_encoder_funcs db9000_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static int db9000_encoder_init(struct drm_device *ddev,
+ struct drm_bridge *bridge)
+{
+ struct drm_encoder *encoder;
+ int ret;
+
+ encoder = devm_kzalloc(ddev->dev, sizeof(*encoder), GFP_KERNEL);
+ if (!encoder)
+ return -ENOMEM;
+
+ encoder->possible_crtcs = NR_CRTC;
+ encoder->possible_clones = 0; /* No cloning support */
+
+ drm_encoder_init(ddev, encoder, &db9000_encoder_funcs,
+ DRM_MODE_ENCODER_NONE, NULL);
+
+ ret = drm_bridge_attach(encoder, bridge, NULL);
+ if (ret) {
+ drm_encoder_cleanup(encoder);
+ return -EINVAL;
+ }
+
+ DRM_DEBUG_DRIVER("Bridge encoder:%d created\n", encoder->base.id);
+
+ return 0;
+}
+
+void __maybe_unused db9000_suspend(struct drm_device *ddev)
+{
+ struct db9000_device *db9000_dev = container_of(ddev,
+ struct db9000_device, drm);
+
+ clk_disable_unprepare(db9000_dev->lcd_eclk);
+}
+
+int __maybe_unused db9000_resume(struct drm_device *ddev)
+{
+ struct db9000_device *db9000_dev = container_of(ddev,
+ struct db9000_device, drm);
+ int ret;
+
+ ret = clk_prepare_enable(db9000_dev->lcd_eclk);
+ if (ret) {
+ DRM_ERROR("failed to enable pixel clock (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int db9000_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+ return pm_runtime_get_sync(chip->dev);
+}
+
+static void db9000_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+ pm_runtime_put(chip->dev);
+}
+
+static int db9000_pwm_enable(struct db9000_device *db9000_dev)
+{
+ u32 reg_pwmfr = reg_read(db9000_dev->regs, db9000_dev->addr_pwmfr);
+
+ reg_pwmfr |= DB9000_PWMFR_PWMFCE;
+ reg_write(db9000_dev->regs, db9000_dev->addr_pwmfr, reg_pwmfr);
+
+ return 0;
+}
+
+static void db9000_pwm_disable(struct db9000_device *db9000_dev)
+{
+ u32 reg_pwmfr = reg_read(db9000_dev->regs, db9000_dev->addr_pwmfr);
+
+ reg_pwmfr &= ~DB9000_PWMFR_PWMFCE;
+ reg_write(db9000_dev->regs, db9000_dev->addr_pwmfr, reg_pwmfr);
+}
+
+static int db9000_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+ struct pwm_state *state)
+{
+ struct pwm_state cur_state;
+ struct db9000_device *db9000_dev = pwm_chip_to_db9000(chip);
+ int ret;
+
+ pwm_get_state(pwm, &cur_state);
+
+ if (state->enabled)
+ ret = db9000_pwm_enable(db9000_dev);
+ else
+ db9000_pwm_disable(db9000_dev);
+
+ if (state->period != cur_state.period) {
+ u32 pwmfcd;
+
+ pwmfcd = clk_get_rate(db9000_dev->lcd_eclk) / 256;
+ pwmfcd *= state->period;
+ pwmfcd = DB9000_PWMFR_PWMFCD(pwmfcd - 1);
+ reg_write(db9000_dev->regs, db9000_dev->addr_pwmfr, pwmfcd);
+ }
+
+ if (state->duty_cycle == 0) {
+ db9000_pwm_disable(db9000_dev);
+ } else if (state->period != cur_state.period ||
+ state->duty_cycle != cur_state.duty_cycle) {
+ u32 dcr = div_u64((state->duty_cycle * ULL(256)),
+ state->period) - 1;
+
+ reg_write(db9000_dev->regs, db9000_dev->addr_pwmdcr, dcr);
+ }
+
+ return ret;
+}
+
+static const struct pwm_ops db9000_pwm_ops = {
+ .request = db9000_pwm_request,
+ .free = db9000_pwm_free,
+ .apply = db9000_pwm_apply,
+ .owner = THIS_MODULE,
+};
+
+static int db9000_pwm_setup(struct device *dev,
+ struct db9000_device *db9000_dev)
+{
+ struct pwm_chip *db9000_pwm;
+ int ret;
+
+ db9000_pwm = devm_kzalloc(dev, sizeof(*db9000_pwm), GFP_KERNEL);
+ if (db9000_pwm == NULL)
+ return -ENOMEM;
+
+ db9000_pwm = &db9000_dev->pwm;
+
+ db9000_pwm->dev = dev;
+ db9000_pwm->ops = &db9000_pwm_ops;
+ db9000_pwm->base = -1;
+ db9000_pwm->npwm = 1;
+
+ ret = pwmchip_add(db9000_pwm);
+ if (ret < 0) {
+ dev_err(dev, "failed to register PWM chip: %d\n", ret);
+ return ret;
+ }
+
+ pm_runtime_enable(dev);
+
+ return 0;
+}
+
+int db9000_load(struct drm_device *ddev, int rzn1_pwm)
+{
+ struct platform_device *pdev = to_platform_device(ddev->dev);
+ struct device *dev = ddev->dev;
+ struct db9000_device *db9000_dev = container_of(ddev,
+ struct db9000_device, drm);
+ struct device_node *np = dev->of_node;
+ struct drm_bridge *bridge;
+ struct drm_panel *panel;
+ struct drm_crtc *crtc;
+ struct reset_control *rstc;
+ struct resource *res;
+ int ret;
+
+ spin_lock_init(&db9000_dev->lock);
+
+ if (rzn1_pwm) {
+ db9000_dev->addr_pwmfr = DB9000_PWMFR_RZN1;
+ db9000_dev->addr_pwmdcr = DB9000_PWMDCR_RZN1;
+ } else {
+ db9000_dev->addr_pwmfr = DB9000_PWMFR_0;
+ db9000_dev->addr_pwmdcr = DB9000_PWMDCR_0;
+ }
+
+ /* Panel Setup */
+ ret = drm_of_find_panel_or_bridge(np, 0, 0, &panel, &bridge);
+ if (ret != 0) {
+ DRM_ERROR("Could not get Panel or bridge");
+ return ret;
+ }
+
+ rstc = devm_reset_control_get_exclusive(dev, NULL);
+
+ /* Clock setup */
+ db9000_dev->lcd_eclk = devm_clk_get(dev, "lcd_eclk");
+
+ if (IS_ERR(db9000_dev->lcd_eclk)) {
+ DRM_ERROR("Unable to get pixel clock\n");
+ return -ENODEV;
+ }
+
+ if (clk_prepare_enable(db9000_dev->lcd_eclk)) {
+ DRM_ERROR("Unable to prepare pixel clock\n");
+ return -ENODEV;
+ }
+
+ /* Memory setup */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ DRM_ERROR("Could not retrieve platform resources\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ db9000_dev->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(db9000_dev->regs)) {
+ DRM_ERROR("Unable to get memory resource\n");
+ ret = PTR_ERR(db9000_dev->regs);
+ goto err;
+ }
+
+ db9000_bpp_setup(db9000_dev, db9000_dev->bpp, db9000_dev->bus_width,
+ false);
+
+ db9000_toggle_controller(db9000_dev, true);
+
+ /* Add endpoints panels or bridges if any */
+ if (panel) {
+ bridge = drm_panel_bridge_add(panel,
+ DRM_MODE_CONNECTOR_Unknown);
+ if (IS_ERR(bridge)) {
+ DRM_ERROR("panel-bridge endpoint\n");
+ ret = PTR_ERR(bridge);
+ goto err;
+ }
+ }
+
+ if (bridge) {
+ ret = db9000_encoder_init(ddev, bridge);
+ if (ret) {
+ DRM_ERROR("init encoder endpoint\n");
+ goto err;
+ }
+ }
+
+ db9000_dev->connector = panel->connector;
+
+ /* CRTC setup */
+ crtc = devm_kzalloc(dev, sizeof(*crtc), GFP_KERNEL);
+ if (!crtc) {
+ DRM_ERROR("Failed to allocate crtc\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ ret = db9000_crtc_init(&db9000_dev->drm, crtc);
+ if (ret) {
+ DRM_ERROR("Failed to init crtc\n");
+ goto err;
+ }
+
+ if (!IS_ERR(rstc)) {
+ reset_control_assert(rstc);
+ usleep_range(10, 20);
+ reset_control_deassert(rstc);
+ }
+
+ return db9000_pwm_setup(dev, db9000_dev);
+
+err:
+ drm_panel_bridge_remove(bridge);
+
+ clk_disable_unprepare(db9000_dev->lcd_eclk);
+
+ return ret;
+}
+
+void db9000_unload(struct drm_device *ddev)
+{
+ struct db9000_device *db9000_dev;
+
+ db9000_dev = container_of(ddev, struct db9000_device, drm);
+
+ drm_of_panel_bridge_remove(ddev->dev->of_node, 0, 0);
+ clk_disable_unprepare(db9000_dev->lcd_eclk);
+}
+
+static const struct drm_mode_config_funcs drv_mode_config_funcs = {
+ .fb_create = drm_gem_fb_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static int db9000_gem_cma_dumb_create(struct drm_file *file,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ return drm_gem_cma_dumb_create_internal(file, dev, args);
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(drv_driver_fops);
+
+static struct drm_driver drv_driver = {
+ .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
+ DRIVER_ATOMIC,
+ .name = "drm-db9000",
+ .desc = "Digital Blocks DB9000 DRM Driver",
+ .date = "20190825",
+ .major = 1,
+ .minor = 0,
+ .patchlevel = 0,
+ .fops = &drv_driver_fops,
+ .dumb_create = db9000_gem_cma_dumb_create,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_free_object_unlocked = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+};
+
+static int drv_load(struct drm_device *ddev, u32 bpp,
+ u32 bus_width, int rzn1_pwm)
+{
+ struct platform_device *pdev = to_platform_device(ddev->dev);
+ struct db9000_device *db9000_dev = container_of(ddev,
+ struct db9000_device, drm);
+ int ret;
+
+ drm_mode_config_init(ddev);
+
+ /*
+ * set max width and height as default value.
+ * this value would be used to check framebuffer size limitation
+ * at drm_mode_addfb().
+ */
+ ddev->mode_config.min_width = 0;
+ ddev->mode_config.min_height = 0;
+ ddev->mode_config.max_width = DB9000_FB_MAX_WIDTH;
+ ddev->mode_config.max_height = DB9000_FB_MAX_WIDTH;
+ ddev->mode_config.funcs = &drv_mode_config_funcs;
+
+ db9000_dev->bus_width = bus_width;
+
+ ret = db9000_load(ddev, rzn1_pwm);
+
+ if (ret)
+ goto err;
+
+ drm_mode_config_reset(ddev);
+
+ drm_kms_helper_poll_init(ddev);
+
+ platform_set_drvdata(pdev, ddev);
+
+ return 0;
+
+err:
+ drm_mode_config_cleanup(ddev);
+
+ return ret;
+}
+
+static void drv_unload(struct drm_device *ddev)
+{
+ drm_kms_helper_poll_fini(ddev);
+ db9000_unload(ddev);
+ drm_mode_config_cleanup(ddev);
+}
+
+static __maybe_unused int db9000_drv_suspend(struct device *dev)
+{
+ struct drm_device *ddev = dev_get_drvdata(dev);
+ struct db9000_device *db9000_dev = container_of(ddev,
+ struct db9000_device,
+ drm);
+ struct drm_atomic_state *state;
+
+ db9000_toggle_controller(db9000_dev, false);
+
+ drm_kms_helper_poll_disable(ddev);
+ state = drm_atomic_helper_suspend(ddev);
+ if (IS_ERR(state)) {
+ drm_kms_helper_poll_enable(ddev);
+ return PTR_ERR(state);
+ }
+ db9000_dev->suspend_state = state;
+ db9000_suspend(ddev);
+
+ return 0;
+}
+
+static __maybe_unused int db9000_drv_resume(struct device *dev)
+{
+ struct drm_device *ddev = dev_get_drvdata(dev);
+ struct db9000_device *db9000_dev = container_of(ddev,
+ struct db9000_device,
+ drm);
+
+ db9000_resume(ddev);
+ drm_atomic_helper_resume(ddev, db9000_dev->suspend_state);
+ drm_kms_helper_poll_enable(ddev);
+ db9000_toggle_controller(db9000_dev, true);
+
+ return 0;
+}
+
+static const struct dev_pm_ops drv_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(db9000_drv_suspend, db9000_drv_resume)
+};
+
+static int db9000_drm_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct drm_device *ddev;
+ struct db9000_device *db9000_dev;
+ struct device_node *np = dev->of_node;
+ u32 bpp;
+ u32 bus_width;
+ int rzn1_pwm = 0;
+ int ret;
+
+ dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+
+ db9000_dev = kzalloc(sizeof(*db9000_dev), GFP_KERNEL);
+ if (!db9000_dev)
+ return -ENOMEM;
+
+ drm_dev_init(&db9000_dev->drm, &drv_driver, dev);
+ ddev = &db9000_dev->drm;
+
+ /* Parse the DTB */
+ ret = of_property_read_u32(np, "bits-per-pixel", &bpp);
+ if (ret)
+ bpp = 16;
+
+ if (bpp != 16 && bpp != 24 && bpp != 32) {
+ DRM_WARN("bits-per-pixel value invalid, default is 16 bpp");
+ bpp = 16;
+ }
+
+ ret = of_property_read_u32(np, "bus-width", &bus_width);
+ if (ret)
+ bus_width = 24;
+
+ rzn1_pwm = (int) of_device_get_match_data(dev);
+
+ ret = drv_load(ddev, bpp, bus_width, rzn1_pwm);
+ if (ret)
+ goto err_put;
+
+ ret = drm_dev_register(ddev, 0);
+ if (ret)
+ goto err_put;
+
+ ret = drm_fbdev_generic_setup(ddev, bpp);
+ if (ret)
+ goto err_put;
+
+ dev_info(dev, "DB9000 LCD Controller Ready");
+
+ return 0;
+
+err_put:
+ drm_dev_put(ddev);
+
+ return ret;
+}
+
+static int db9000_drm_platform_remove(struct platform_device *pdev)
+{
+ struct drm_device *ddev = platform_get_drvdata(pdev);
+
+ drv_unload(ddev);
+ drm_dev_put(ddev);
+
+ return 0;
+}
+
+static const struct of_device_id drv_dt_ids[] = {
+ { .compatible = "digital-blocks,drm-db9000"},
+ { .compatible = "digital-blocks,drm-rzn1", .data = RZN1_REGS },
+ { /* end node */ },
+};
+MODULE_DEVICE_TABLE(of, drv_dt_ids);
+
+static struct platform_driver db9000_drm_platform_driver = {
+ .probe = db9000_drm_platform_probe,
+ .remove = db9000_drm_platform_remove,
+ .driver = {
+ .name = "drm-db9000",
+ .of_match_table = drv_dt_ids,
+ .pm = &drv_pm_ops,
+ },
+};
+
+module_platform_driver(db9000_drm_platform_driver);
+
+MODULE_AUTHOR("Gareth Williams <gareth.williams.jx@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("Digital Blocks DB9000 LCD Controller Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/digital-blocks/db9000-du.h b/drivers/gpu/drm/digital-blocks/db9000-du.h
new file mode 100644
index 0000000..325c9f0
--- /dev/null
+++ b/drivers/gpu/drm/digital-blocks/db9000-du.h
@@ -0,0 +1,192 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019 Renesas Electronics Europe Ltd.
+ *
+ * Author: Gareth Williams <gareth.williams.jx@xxxxxxxxxxx>
+ *
+ * Based on ltdc.h
+ * Copyright (C) STMicroelectronics SA 2017
+ *
+ * Authors: Philippe Cornu <philippe.cornu@xxxxxx>
+ * Yannick Fertre <yannick.fertre@xxxxxx>
+ * Fabien Dessenne <fabien.dessenne@xxxxxx>
+ * Mickael Reulier <mickael.reulier@xxxxxx>
+ */
+#ifndef __DB9000_DU_H__
+#define __DB9000_DU_H__
+
+#include <linux/backlight.h>
+#include <linux/interrupt.h>
+#include <linux/pwm.h>
+
+#define DB9000_MAX_LAYER 1
+
+/* LCD Controller Control Register 1 */
+#define DB9000_CR1 0x000
+/* Horizontal Timing Register */
+#define DB9000_HTR 0x008
+/* Vertical Timing Register 1 */
+#define DB9000_VTR1 0x00C
+/* Vertical Timing Register 2 */
+#define DB9000_VTR2 0x010
+/* Pixel Clock Timing Register */
+#define DB9000_PCTR 0x014
+/* Interrupt Status Register */
+#define DB9000_ISR 0x018
+/* Interrupt Mask Register */
+#define DB9000_IMR 0x01C
+/* Interrupt Vector Register */
+#define DB9000_IVR 0x020
+/* Interrupt Scan Compare Register */
+#define DB9000_ISCR 0x024
+/* DMA Base Address Register */
+#define DB9000_DBAR 0x028
+/* DMA Current Address Register */
+#define DB9000_DCAR 0x02C
+/* DMA End Address Register */
+#define DB9000_DEAR 0x030
+/* DMA Horizontal and Vertical Timing Extension Register */
+#define DB9000_HVTER 0x044
+/* Horizontal Pixels-Per-Line Override Control */
+#define DB9000_HPPLOR 0x048
+/* Horizontal Pixels-Per-Line Override Enable */
+#define DB9000_HPOE BIT(31)
+/* GPIO Register */
+#define DB9000_GPIOR 0x1F8
+/* Core Identification Register */
+#define DB9000_CIR 0x1FC
+/* Palette Data Words */
+#define DB9000_PALT 0x200
+
+/* Control Register 1, Offset 0x000 */
+/* LCD Controller Enable */
+#define DB9000_CR1_LCE BIT(0)
+/* LCD Power Enable */
+#define DB9000_CR1_LPE BIT(1)
+/* LCD Bits per Pixel */
+#define DB9000_CR1_BPP(x) (((x) & 0x7) << 2)
+/* RGB or BGR Format */
+#define DB9000_CR1_RGB BIT(5)
+/* Data Enable Polarity */
+#define DB9000_CR1_DEP BIT(8)
+/* Pixel Clock Polarity */
+#define DB9000_CR1_PCP BIT(9)
+/* Horizontal Sync Polarity */
+#define DB9000_CR1_HSP BIT(10)
+/* Vertical Sync Polarity */
+#define DB9000_CR1_VSP BIT(11)
+/* Output Pixel Select */
+#define DB9000_CR1_OPS(x) (((x) & 0x7) << 12)
+/* FIFO DMA Request Words */
+#define DB9000_CR1_FDW(x) (((x) & 0x3) << 16)
+/* LCD 1 or Port Select */
+#define DB9000_CR1_LPS BIT(18)
+/* Frame Buffer 24bpp Packed Word */
+#define DB9000_CR1_FBP BIT(19)
+
+enum DB9000_CR1_BPP {
+ /* 1 bit per pixel */
+ DB9000_CR1_BPP_1bpp,
+ /* 2 bits per pixel */
+ DB9000_CR1_BPP_2bpp,
+ /* 4 bits per pixel */
+ DB9000_CR1_BPP_4bpp,
+ /* 8 bits per pixel */
+ DB9000_CR1_BPP_8bpp,
+ /* 16 bits per pixel */
+ DB9000_CR1_BPP_16bpp,
+ /* 18 bits per pixel */
+ DB9000_CR1_BPP_18bpp,
+ /* 24 bits per pixel */
+ DB9000_CR1_BPP_24bpp
+} DB9000_CR1_BPP_VAL;
+
+/* Horizontal Timing Register, Offset 0x008 */
+/* Horizontal Front Porch */
+#define DB9000_HTR_HFP(x) (((x) & 0xff) << 0)
+/* Pixels per Line */
+#define DB9000_HTR_PPL(x) (((x) & 0xff) << 8)
+/* Horizontal Back Porch */
+#define DB9000_HTR_HBP(x) (((x) & 0xff) << 16)
+/* Horizontal Sync Width */
+#define DB9000_HTR_HSW(x) (((x) & 0xff) << 24)
+
+/* Vertical Timing Register 1, Offset 0x00C */
+/* Vertical Sync Width */
+#define DB9000_VTR1_VSW(x) (((x) & 0xff) << 0)
+/* Vertical Front Porch */
+#define DB9000_VTR1_VFP(x) (((x) & 0xff) << 8)
+/* Vertical Back Porch */
+#define DB9000_VTR1_VBP(x) (((x) & 0xff) << 16)
+
+/* Vertical Timing Register 2, Offset 0x010 */
+/* Lines Per Panel */
+#define DB9000_VTR2_LPP(x) (((x) & 0xfff) << 0)
+
+/* Vertical and Horizontal Timing Extension Register, Offset 0x044 */
+/* Horizontal Front Porch Extension */
+#define DB9000_HVTER_HFPE(x) ((((x) >> 8) & 0x3) << 0)
+/* Horizontal Back Porch Extension */
+#define DB9000_HVTER_HBPE(x) ((((x) >> 8) & 0x3) << 4)
+/* Vertical Front Porch Extension */
+#define DB9000_HVTER_VFPE(x) ((((x) >> 8) & 0x3) << 8)
+/* Vertical Back Porch Extension */
+#define DB9000_HVTER_VBPE(x) ((((x) >> 8) & 0x3) << 12)
+
+/* clock reset select */
+#define DB9000_PCTR_PCR BIT(10)
+
+/* Interrupt Status Register, Offset 0x018 */
+#define DB9000_ISR_OFU BIT(0) /* Output FIFO Underrun */
+#define DB9000_ISR_OFO BIT(1) /* Output FIFO Overrun */
+#define DB9000_ISR_IFU BIT(2) /* Input FIFO Underrun */
+#define DB9000_ISR_IFO BIT(3) /* Input FIFO Overrun */
+#define DB9000_ISR_FER BIT(4) /* OR of OFU, OFO, IFU, IFO */
+#define DB9000_ISR_MBE BIT(5) /* Master Bus Error */
+#define DB9000_ISR_VCT BIT(6) /* Vertical Compare Triggered */
+#define DB9000_ISR_BAU BIT(7) /* DMA Base Address Register Update to CAR */
+#define DB9000_ISR_LDD BIT(8) /* LCD Controller Disable Done */
+
+/* Interrupt Mask Register, Offset 0x01C */
+#define DB9000_IMR_OFUM BIT(0) /* Output FIFO Underrun - Mask */
+#define DB9000_IMR_OFOM BIT(1) /* Output FIFO Overrun - Mask */
+#define DB9000_IMR_IFUM BIT(2) /* Input FIFO Underrun - Mask */
+#define DB9000_IMR_IFOM BIT(3) /* Input FIFO Overrun - Mask */
+#define DB9000_IMR_FERM BIT(4) /* OR of OFU, OFO, IFU, IFO - Mask */
+#define DB9000_IMR_MBEM BIT(5) /* Master Bus Error - Mask */
+#define DB9000_IMR_VCTM BIT(6) /* Vertical Compare Triggered - Mask */
+/* DMA Base Address Register Update to CAR - Mask */
+#define DB9000_IMR_BAUM BIT(7)
+#define DB9000_IMR_LDDM BIT(8) /* LCD Controller Disable Done - Mask */
+
+/* PWM Frequency Register */
+#define DB9000_PWMFR_0 0x034
+#define DB9000_PWMFR_RZN1 0x04C
+/* PWM Duty Cycle Register */
+#define DB9000_PWMDCR_0 0x038
+#define DB9000_PWMDCR_RZN1 0x050
+/* PWM Frequency Registers, Offset 0x034 and 0x04c */
+#define DB9000_PWMFR_PWMFCD(x) (((x) & 0x3fffff) << 0)
+#define DB9000_PWMFR_PWMFCE BIT(22)
+
+struct fps_info {
+ unsigned int counter;
+ ktime_t last_timestamp;
+};
+
+struct db9000_device {
+ struct drm_device drm;
+ struct pwm_chip pwm;
+ struct drm_connector *connector;
+ void __iomem *regs;
+ spinlock_t lock;
+ struct clk *lcd_eclk;
+ struct fps_info plane_fpsi[DB9000_MAX_LAYER];
+ struct drm_atomic_state *suspend_state;
+ u8 bpp;
+ int bus_width;
+ size_t frame_size;
+ u32 addr_pwmfr;
+ u32 addr_pwmdcr;
+};
+
+#endif /* __DB9000_DU_H__ */
--
2.7.4