[PATCH v3] drm/exynos: hdmi: use drm_display_mode to check the supported modes

[Rahul Sharma <rahul.sharma@samsung.com>]

Exynos hdmi driver is using drm_display_mode for setting timing values
for a supported resolution. Conversion to fb_videomode and then comparing
with the mixer/hdmi/phy limits is not required. Instead, drm_display_mode
fields cane be directly compared.

v3:
1) Replaced check_timing callbacks with check_mode.
2) Change the type of second parameter of check_mode callback from void
pointer paramenter to struct drm_display_mode pointer.

v2:
1) Removed convert_to_video_timing().
2) Corrected DRM_DEBUG_KMS to print the resolution properly.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_connector.c |   38 ++-----------------------
 drivers/gpu/drm/exynos/exynos_drm_drv.h       |    4 +--
 drivers/gpu/drm/exynos/exynos_drm_fimd.c      |    4 +--
 drivers/gpu/drm/exynos/exynos_drm_hdmi.c      |   17 +++++------
 drivers/gpu/drm/exynos/exynos_drm_hdmi.h      |    6 ++--
 drivers/gpu/drm/exynos/exynos_drm_vidi.c      |    4 +--
 drivers/gpu/drm/exynos/exynos_hdmi.c          |   29 +++++++++----------
 drivers/gpu/drm/exynos/exynos_mixer.c         |   15 +++++-----
 8 files changed, 42 insertions(+), 75 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_connector.c b/drivers/gpu/drm/exynos/exynos_drm_connector.c
index 8bcc13a..ab3c6d4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_connector.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_connector.c
@@ -58,37 +58,6 @@ convert_to_display_mode(struct drm_display_mode *mode,
 		mode->flags |= DRM_MODE_FLAG_DBLSCAN;
 }
 
-/* convert drm_display_mode to exynos_video_timings */
-static inline void
-convert_to_video_timing(struct fb_videomode *timing,
-			struct drm_display_mode *mode)
-{
-	DRM_DEBUG_KMS("%s\n", __FILE__);
-
-	memset(timing, 0, sizeof(*timing));
-
-	timing->pixclock = mode->clock * 1000;
-	timing->refresh = drm_mode_vrefresh(mode);
-
-	timing->xres = mode->hdisplay;
-	timing->right_margin = mode->hsync_start - mode->hdisplay;
-	timing->hsync_len = mode->hsync_end - mode->hsync_start;
-	timing->left_margin = mode->htotal - mode->hsync_end;
-
-	timing->yres = mode->vdisplay;
-	timing->lower_margin = mode->vsync_start - mode->vdisplay;
-	timing->vsync_len = mode->vsync_end - mode->vsync_start;
-	timing->upper_margin = mode->vtotal - mode->vsync_end;
-
-	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
-		timing->vmode = FB_VMODE_INTERLACED;
-	else
-		timing->vmode = FB_VMODE_NONINTERLACED;
-
-	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
-		timing->vmode |= FB_VMODE_DOUBLE;
-}
-
 static int exynos_drm_connector_get_modes(struct drm_connector *connector)
 {
 	struct exynos_drm_connector *exynos_connector =
@@ -168,15 +137,12 @@ static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
 					to_exynos_connector(connector);
 	struct exynos_drm_manager *manager = exynos_connector->manager;
 	struct exynos_drm_display_ops *display_ops = manager->display_ops;
-	struct fb_videomode timing;
 	int ret = MODE_BAD;
 
 	DRM_DEBUG_KMS("%s\n", __FILE__);
 
-	convert_to_video_timing(&timing, mode);
-
-	if (display_ops && display_ops->check_timing)
-		if (!display_ops->check_timing(manager->dev, (void *)&timing))
+	if (display_ops && display_ops->check_mode)
+		if (!display_ops->check_mode(manager->dev, mode))
 			ret = MODE_OK;
 
 	return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 4606fac..9650b3b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -142,7 +142,7 @@ struct exynos_drm_overlay {
  * @is_connected: check for that display is connected or not.
  * @get_edid: get edid modes from display driver.
  * @get_panel: get panel object from display driver.
- * @check_timing: check if timing is valid or not.
+ * @check_mode: check if mode is valid or not.
  * @power_on: display device on or off.
  */
 struct exynos_drm_display_ops {
@@ -151,7 +151,7 @@ struct exynos_drm_display_ops {
 	struct edid *(*get_edid)(struct device *dev,
 			struct drm_connector *connector);
 	void *(*get_panel)(struct device *dev);
-	int (*check_timing)(struct device *dev, void *timing);
+	int (*check_mode)(struct device *dev, struct drm_display_mode *mode);
 	int (*power_on)(struct device *dev, int mode);
 };
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 15e58f5..98bbe1e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -153,7 +153,7 @@ static void *fimd_get_panel(struct device *dev)
 	return ctx->panel;
 }
 
-static int fimd_check_timing(struct device *dev, void *timing)
+static int fimd_check_mode(struct device *dev, struct drm_display_mode *mode)
 {
 	DRM_DEBUG_KMS("%s\n", __FILE__);
 
@@ -175,7 +175,7 @@ static struct exynos_drm_display_ops fimd_display_ops = {
 	.type = EXYNOS_DISPLAY_TYPE_LCD,
 	.is_connected = fimd_display_is_connected,
 	.get_panel = fimd_get_panel,
-	.check_timing = fimd_check_timing,
+	.check_mode = fimd_check_mode,
 	.power_on = fimd_display_power_on,
 };
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
index 5285509..8a07e8b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
@@ -121,7 +121,8 @@ static struct edid *drm_hdmi_get_edid(struct device *dev,
 	return NULL;
 }
 
-static int drm_hdmi_check_timing(struct device *dev, void *timing)
+static int drm_hdmi_check_mode(struct device *dev,
+		struct drm_display_mode *mode)
 {
 	struct drm_hdmi_context *ctx = to_context(dev);
 	int ret = 0;
@@ -133,14 +134,14 @@ static int drm_hdmi_check_timing(struct device *dev, void *timing)
 	* If any of the two fails, return mode as BAD.
 	*/
 
-	if (mixer_ops && mixer_ops->check_timing)
-		ret = mixer_ops->check_timing(ctx->mixer_ctx->ctx, timing);
+	if (mixer_ops && mixer_ops->check_mode)
+		ret = mixer_ops->check_mode(ctx->mixer_ctx->ctx, mode);
 
 	if (ret)
 		return ret;
 
-	if (hdmi_ops && hdmi_ops->check_timing)
-		return hdmi_ops->check_timing(ctx->hdmi_ctx->ctx, timing);
+	if (hdmi_ops && hdmi_ops->check_mode)
+		return hdmi_ops->check_mode(ctx->hdmi_ctx->ctx, mode);
 
 	return 0;
 }
@@ -161,7 +162,7 @@ static struct exynos_drm_display_ops drm_hdmi_display_ops = {
 	.type = EXYNOS_DISPLAY_TYPE_HDMI,
 	.is_connected = drm_hdmi_is_connected,
 	.get_edid = drm_hdmi_get_edid,
-	.check_timing = drm_hdmi_check_timing,
+	.check_mode = drm_hdmi_check_mode,
 	.power_on = drm_hdmi_power_on,
 };
 
@@ -212,7 +213,7 @@ static void drm_hdmi_mode_fixup(struct device *subdrv_dev,
 
 	drm_mode_set_crtcinfo(adjusted_mode, 0);
 
-	mode_ok = drm_hdmi_check_timing(subdrv_dev, adjusted_mode);
+	mode_ok = drm_hdmi_check_mode(subdrv_dev, adjusted_mode);
 
 	/* just return if user desired mode exists. */
 	if (mode_ok == 0)
@@ -223,7 +224,7 @@ static void drm_hdmi_mode_fixup(struct device *subdrv_dev,
 	 * to adjusted_mode.
 	 */
 	list_for_each_entry(m, &connector->modes, head) {
-		mode_ok = drm_hdmi_check_timing(subdrv_dev, m);
+		mode_ok = drm_hdmi_check_mode(subdrv_dev, m);
 
 		if (mode_ok == 0) {
 			struct drm_mode_object base;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h
index 6b70944..724cab1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h
@@ -32,11 +32,11 @@ struct exynos_hdmi_ops {
 	bool (*is_connected)(void *ctx);
 	struct edid *(*get_edid)(void *ctx,
 			struct drm_connector *connector);
-	int (*check_timing)(void *ctx, struct fb_videomode *timing);
+	int (*check_mode)(void *ctx, struct drm_display_mode *mode);
 	int (*power_on)(void *ctx, int mode);
 
 	/* manager */
-	void (*mode_set)(void *ctx, void *mode);
+	void (*mode_set)(void *ctx, struct drm_display_mode *mode);
 	void (*get_max_resol)(void *ctx, unsigned int *width,
 				unsigned int *height);
 	void (*commit)(void *ctx);
@@ -57,7 +57,7 @@ struct exynos_mixer_ops {
 	void (*win_disable)(void *ctx, int zpos);
 
 	/* display */
-	int (*check_timing)(void *ctx, struct fb_videomode *timing);
+	int (*check_mode)(void *ctx, struct drm_display_mode *mode);
 };
 
 void exynos_hdmi_drv_attach(struct exynos_drm_hdmi_context *ctx);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 9504b0c..6043700 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -135,7 +135,7 @@ static void *vidi_get_panel(struct device *dev)
 	return NULL;
 }
 
-static int vidi_check_timing(struct device *dev, void *timing)
+static int vidi_check_mode(struct device *dev, struct drm_display_mode *mode)
 {
 	DRM_DEBUG_KMS("%s\n", __FILE__);
 
@@ -158,7 +158,7 @@ static struct exynos_drm_display_ops vidi_display_ops = {
 	.is_connected = vidi_display_is_connected,
 	.get_edid = vidi_get_edid,
 	.get_panel = vidi_get_panel,
-	.check_timing = vidi_check_timing,
+	.check_mode = vidi_check_mode,
 	.power_on = vidi_display_power_on,
 };
 
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 93b70e9..e71612d 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -796,18 +796,17 @@ static int hdmi_find_phy_conf(struct hdmi_context *hdata, u32 pixel_clock)
 	return -EINVAL;
 }
 
-static int hdmi_check_timing(void *ctx, struct fb_videomode *timing)
+static int hdmi_check_mode(void *ctx, struct drm_display_mode *mode)
 {
 	struct hdmi_context *hdata = ctx;
 	int ret;
 
-	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
-
-	DRM_DEBUG_KMS("[%d]x[%d] [%d]Hz [%x]\n", timing->xres,
-			timing->yres, timing->refresh,
-			timing->vmode);
+	DRM_DEBUG_KMS("%s : xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
+		__func__, mode->hdisplay, mode->vdisplay,
+		mode->vrefresh, (mode->flags & DRM_MODE_FLAG_INTERLACE) ? true :
+		false, mode->clock * 1000);
 
-	ret = hdmi_find_phy_conf(hdata, timing->pixclock);
+	ret = hdmi_find_phy_conf(hdata, mode->clock * 1000);
 	if (ret < 0)
 		return ret;
 	return 0;
@@ -1042,7 +1041,7 @@ static void hdmi_conf_init(struct hdmi_context *hdata)
 	}
 }
 
-static void hdmi_v13_timing_apply(struct hdmi_context *hdata)
+static void hdmi_v13_mode_apply(struct hdmi_context *hdata)
 {
 	const struct hdmi_tg_regs *tg = &hdata->mode_conf.conf.v13_conf.tg;
 	const struct hdmi_v13_core_regs *core =
@@ -1131,7 +1130,7 @@ static void hdmi_v13_timing_apply(struct hdmi_context *hdata)
 		hdmi_reg_writemask(hdata, HDMI_TG_CMD, ~0, HDMI_TG_EN);
 }
 
-static void hdmi_v14_timing_apply(struct hdmi_context *hdata)
+static void hdmi_v14_mode_apply(struct hdmi_context *hdata)
 {
 	const struct hdmi_tg_regs *tg = &hdata->mode_conf.conf.v14_conf.tg;
 	const struct hdmi_v14_core_regs *core =
@@ -1298,12 +1297,12 @@ static void hdmi_v14_timing_apply(struct hdmi_context *hdata)
 		hdmi_reg_writemask(hdata, HDMI_TG_CMD, ~0, HDMI_TG_EN);
 }
 
-static void hdmi_timing_apply(struct hdmi_context *hdata)
+static void hdmi_mode_apply(struct hdmi_context *hdata)
 {
 	if (hdata->type == HDMI_TYPE13)
-		hdmi_v13_timing_apply(hdata);
+		hdmi_v13_mode_apply(hdata);
 	else
-		hdmi_v14_timing_apply(hdata);
+		hdmi_v14_mode_apply(hdata);
 }
 
 static void hdmiphy_conf_reset(struct hdmi_context *hdata)
@@ -1424,7 +1423,7 @@ static void hdmi_conf_apply(struct hdmi_context *hdata)
 	hdmi_audio_init(hdata);
 
 	/* setting core registers */
-	hdmi_timing_apply(hdata);
+	hdmi_mode_apply(hdata);
 	hdmi_audio_control(hdata, true);
 
 	hdmi_regs_dump(hdata, "start");
@@ -1643,7 +1642,7 @@ static void hdmi_v14_mode_set(struct hdmi_context *hdata,
 	hdmi_set_reg(tg->tg_3d, 1, 0x0);
 }
 
-static void hdmi_mode_set(void *ctx, void *mode)
+static void hdmi_mode_set(void *ctx, struct drm_display_mode *mode)
 {
 	struct hdmi_context *hdata = ctx;
 	struct drm_display_mode *m = mode;
@@ -1767,7 +1766,7 @@ static struct exynos_hdmi_ops hdmi_ops = {
 	/* display */
 	.is_connected	= hdmi_is_connected,
 	.get_edid	= hdmi_get_edid,
-	.check_timing	= hdmi_check_timing,
+	.check_mode	= hdmi_check_mode,
 
 	/* manager */
 	.mode_set	= hdmi_mode_set,
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index f08e251..1dcd91a 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -818,17 +818,17 @@ static void mixer_win_disable(void *ctx, int win)
 	mixer_ctx->win_data[win].enabled = false;
 }
 
-static int mixer_check_timing(void *ctx, struct fb_videomode *timing)
+static int mixer_check_mode(void *ctx, struct drm_display_mode *mode)
 {
 	u32 w, h;
 
-	w = timing->xres;
-	h = timing->yres;
+	w = mode->hdisplay;
+	h = mode->vdisplay;
 
 	DRM_DEBUG_KMS("%s : xres=%d, yres=%d, refresh=%d, intl=%d\n",
-		__func__, timing->xres, timing->yres,
-		timing->refresh, (timing->vmode &
-		FB_VMODE_INTERLACED) ? true : false);
+		__func__, mode->hdisplay, mode->vdisplay,
+		mode->vrefresh, (mode->flags &
+		DRM_MODE_FLAG_INTERLACE) ? true : false);
 
 	if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
 		(w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
@@ -837,6 +837,7 @@ static int mixer_check_timing(void *ctx, struct fb_videomode *timing)
 
 	return -EINVAL;
 }
+
 static void mixer_wait_for_vblank(void *ctx)
 {
 	struct mixer_context *mixer_ctx = ctx;
@@ -976,7 +977,7 @@ static struct exynos_mixer_ops mixer_ops = {
 	.win_disable		= mixer_win_disable,
 
 	/* display */
-	.check_timing		= mixer_check_timing,
+	.check_mode		= mixer_check_mode,
 };
 
 static irqreturn_t mixer_irq_handler(int irq, void *arg)
-- 
1.7.10.4