drm: renesas: shmobile: Use struct videomode in platform data

Replace the drm_mode_modeinfo field with videomode that includes more
signal polarity flags.  This simplifies driver handling of panel modes
and prepares for DT support.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[geert: Simplify]
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/4312e56de424d94399c6105e7159317eae86c9d5.1694767209.git.geert+renesas@glider.be

drivers/gpu/drm/renesas/shmobile/Kconfig

@@ -6,6 +6,7 @@ config DRM_SHMOBILE
 	select BACKLIGHT_CLASS_DEVICE
 	select DRM_KMS_HELPER
 	select DRM_GEM_DMA_HELPER
+	select VIDEOMODE_HELPERS
 	help
 	  Choose this option if you have an SH Mobile chipset.
 	  If M is selected the module will be called shmob-drm.

drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c

@@ -23,6 +23,8 @@
 #include <drm/drm_simple_kms_helper.h>
 #include <drm/drm_vblank.h>
 
+#include <video/videomode.h>
+
 #include "shmob_drm_crtc.h"
 #include "shmob_drm_drv.h"
 #include "shmob_drm_kms.h"
@@ -41,18 +43,16 @@ static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
 {
 	struct drm_crtc *crtc = &scrtc->crtc;
 	struct shmob_drm_device *sdev = to_shmob_device(crtc->dev);
-	const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
+	enum display_flags dpy_flags = sdev->connector.mode->flags;
 	const struct drm_display_mode *mode = &crtc->mode;
 	u32 value;
 
 	value = sdev->ldmt1r
 	      | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
 	      | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
-	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
-	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
-	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
-	      | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
-	      | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
+	      | ((dpy_flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) ? LDMT1R_DWPOL : 0)
+	      | ((dpy_flags & DISPLAY_FLAGS_DE_LOW) ? LDMT1R_DIPOL : 0);
+
 	lcdc_write(sdev, LDMT1R, value);
 
 	value = ((mode->hdisplay / 8) << 16)			/* HDCN */
@@ -548,7 +548,7 @@ static inline struct shmob_drm_connector *to_shmob_connector(struct drm_connecto
 
 static int shmob_drm_connector_get_modes(struct drm_connector *connector)
 {
-	struct shmob_drm_device *sdev = to_shmob_device(connector->dev);
+	struct shmob_drm_connector *scon = to_shmob_connector(connector);
 	struct drm_display_mode *mode;
 
 	mode = drm_mode_create(connector->dev);
@@ -556,18 +556,9 @@ static int shmob_drm_connector_get_modes(struct drm_connector *connector)
 		return 0;
 
 	mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
-	mode->clock = sdev->pdata->panel.mode.clock;
-	mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
-	mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
-	mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
-	mode->htotal = sdev->pdata->panel.mode.htotal;
-	mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
-	mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
-	mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
-	mode->vtotal = sdev->pdata->panel.mode.vtotal;
-	mode->flags = sdev->pdata->panel.mode.flags;
-
-	drm_mode_set_name(mode);
+
+	drm_display_mode_from_videomode(scon->mode, mode);
+
 	drm_mode_probed_add(connector, mode);
 
 	return 1;
@@ -601,10 +592,12 @@ static const struct drm_connector_funcs connector_funcs = {
 int shmob_drm_connector_create(struct shmob_drm_device *sdev,
 			       struct drm_encoder *encoder)
 {
-	struct drm_connector *connector = &sdev->connector.connector;
+	struct shmob_drm_connector *scon = &sdev->connector;
+	struct drm_connector *connector = &scon->connector;
 	int ret;
 
-	sdev->connector.encoder = encoder;
+	scon->encoder = encoder;
+	scon->mode = &sdev->pdata->panel.mode;
 
 	connector->display_info.width_mm = sdev->pdata->panel.width_mm;
 	connector->display_info.height_mm = sdev->pdata->panel.height_mm;

drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h

@@ -14,6 +14,8 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_encoder.h>
 
+#include <video/videomode.h>
+
 struct drm_pending_vblank_event;
 struct shmob_drm_device;
 struct shmob_drm_format_info;
@@ -33,6 +35,7 @@ struct shmob_drm_crtc {
 struct shmob_drm_connector {
 	struct drm_connector connector;
 	struct drm_encoder *encoder;
+	const struct videomode *mode;
 };
 
 int shmob_drm_crtc_create(struct shmob_drm_device *sdev);

include/linux/platform_data/shmob_drm.h

@@ -10,7 +10,7 @@
 #ifndef __SHMOB_DRM_H__
 #define __SHMOB_DRM_H__
 
-#include <drm/drm_mode.h>
+#include <video/videomode.h>
 
 enum shmob_drm_clk_source {
 	SHMOB_DRM_CLK_BUS,
@@ -32,19 +32,12 @@ enum shmob_drm_interface {
 struct shmob_drm_panel_data {
 	unsigned int width_mm;		/* Panel width in mm */
 	unsigned int height_mm;		/* Panel height in mm */
-	struct drm_mode_modeinfo mode;
+	struct videomode mode;
 };
 
-#define SHMOB_DRM_IFACE_FL_DWPOL (1 << 0) /* Rising edge dot clock data latch */
-#define SHMOB_DRM_IFACE_FL_DIPOL (1 << 1) /* Active low display enable */
-#define SHMOB_DRM_IFACE_FL_DAPOL (1 << 2) /* Active low display data */
-#define SHMOB_DRM_IFACE_FL_HSCNT (1 << 3) /* Disable HSYNC during VBLANK */
-#define SHMOB_DRM_IFACE_FL_DWCNT (1 << 4) /* Disable dotclock during blanking */
-
 struct shmob_drm_interface_data {
 	enum shmob_drm_interface interface;
 	unsigned int clk_div;
-	unsigned int flags;
 };
 
 struct shmob_drm_platform_data {