diff mbox series

[25/29] drm/omap: Pass drm_display_mode to .check_timings() and .set_timings()

Message ID 20181205150022.24200-26-laurent.pinchart@ideasonboard.com (mailing list archive)
State New, archived
Headers show
Series omapdrm: Last large refactoring for drm_bridge transition | expand

Commit Message

Laurent Pinchart Dec. 5, 2018, 3 p.m. UTC 
The omap_dss_device .check_timings() and .set_timings() operations
operate on struct videomode, while the DRM API operates on struct
drm_display_mode. This forces conversion from to videomode in the
callers. While that's not a problem per se, it creates a difference with
the drm_bridge API.

Replace the videomode parameter to the .check_timings() and
.set_timings() operations with a drm_display_mode. This pushed the
conversion to videomode down to the DSS devices in some cases. If needed
they will be converted to operate on drm_display_mode natively.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 .../gpu/drm/omapdrm/displays/panel-dsi-cm.c   |  8 +++---
 drivers/gpu/drm/omapdrm/dss/dpi.c             | 16 +++++------
 drivers/gpu/drm/omapdrm/dss/hdmi4.c           |  6 ++--
 drivers/gpu/drm/omapdrm/dss/hdmi5.c           |  6 ++--
 drivers/gpu/drm/omapdrm/dss/omapdss.h         |  4 +--
 drivers/gpu/drm/omapdrm/dss/sdi.c             | 17 +++++------
 drivers/gpu/drm/omapdrm/dss/venc.c            | 28 +++++++++----------
 drivers/gpu/drm/omapdrm/omap_connector.c      |  8 ++----
 drivers/gpu/drm/omapdrm/omap_encoder.c        |  2 +-
 9 files changed, 46 insertions(+), 49 deletions(-)

Comments

Sebastian Reichel Dec. 9, 2018, 10:26 p.m. UTC | #1 
Hi,

On Wed, Dec 05, 2018 at 05:00:18PM +0200, Laurent Pinchart wrote:
> The omap_dss_device .check_timings() and .set_timings() operations
> operate on struct videomode, while the DRM API operates on struct
> drm_display_mode. This forces conversion from to videomode in the
> callers. While that's not a problem per se, it creates a difference with
> the drm_bridge API.
> 
> Replace the videomode parameter to the .check_timings() and
> .set_timings() operations with a drm_display_mode. This pushed the
> conversion to videomode down to the DSS devices in some cases. If needed
> they will be converted to operate on drm_display_mode natively.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
> [...]
> diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
> index 9882a4b1402b..487603c56b08 100644
> --- a/drivers/gpu/drm/omapdrm/omap_connector.c
> +++ b/drivers/gpu/drm/omapdrm/omap_connector.c
> @@ -245,23 +245,19 @@ enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev,
>  					const struct drm_display_mode *mode,
>  					struct drm_display_mode *adjusted_mode)
>  {
> -	struct videomode vm = { 0 };
>  	int ret;
>  
> -	drm_display_mode_to_videomode(mode, &vm);
> +	drm_mode_copy(adjusted_mode, mode);

This will explode if adjusted_mode is NULL?

>  	for (; dssdev; dssdev = dssdev->next) {
>  		if (!dssdev->ops->check_timings)
>  			continue;
>  
> -		ret = dssdev->ops->check_timings(dssdev, &vm);
> +		ret = dssdev->ops->check_timings(dssdev, adjusted_mode);
>  		if (ret)
>  			return MODE_BAD;
>  	}
>  
> -	if (adjusted_mode)
> -		drm_display_mode_from_videomode(&vm, adjusted_mode);
> -
>  	return MODE_OK;
>  }

Old code assumed, that adjusted_mode may be NULL. If adjusted_mode
cannot be NULL, it should be mentioned in the patch description.

-- Sebastian
Laurent Pinchart Dec. 10, 2018, 8:07 a.m. UTC | #2 
Hi Sebastian,

On Monday, 10 December 2018 00:26:28 EET Sebastian Reichel wrote:
> On Wed, Dec 05, 2018 at 05:00:18PM +0200, Laurent Pinchart wrote:
> > The omap_dss_device .check_timings() and .set_timings() operations
> > operate on struct videomode, while the DRM API operates on struct
> > drm_display_mode. This forces conversion from to videomode in the
> > callers. While that's not a problem per se, it creates a difference with
> > the drm_bridge API.
> > 
> > Replace the videomode parameter to the .check_timings() and
> > .set_timings() operations with a drm_display_mode. This pushed the
> > conversion to videomode down to the DSS devices in some cases. If needed
> > they will be converted to operate on drm_display_mode natively.
> > 
> > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > ---
> > [...]
> > diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c
> > b/drivers/gpu/drm/omapdrm/omap_connector.c index
> > 9882a4b1402b..487603c56b08 100644
> > --- a/drivers/gpu/drm/omapdrm/omap_connector.c
> > +++ b/drivers/gpu/drm/omapdrm/omap_connector.c
> > @@ -245,23 +245,19 @@ enum drm_mode_status
> > omap_connector_mode_fixup(struct omap_dss_device *dssdev,
> >  					const struct drm_display_mode *mode,
> >  					struct drm_display_mode *adjusted_mode)
 >  {
> > -	struct videomode vm = { 0 };
> >  	int ret;
> > 
> > -	drm_display_mode_to_videomode(mode, &vm);
> > +	drm_mode_copy(adjusted_mode, mode);
> 
> This will explode if adjusted_mode is NULL?

Correct, but this function should never (and is never as far as I can tell) 
called with adjusted_mode equal to NULL.

> >  	for (; dssdev; dssdev = dssdev->next) {
> >  		if (!dssdev->ops->check_timings)
> >  			continue;
> > 
> > -		ret = dssdev->ops->check_timings(dssdev, &vm);
> > +		ret = dssdev->ops->check_timings(dssdev, adjusted_mode);
> > 
> >  		if (ret)
> >  			return MODE_BAD;
> >  	}
> > 
> > -	if (adjusted_mode)
> > -		drm_display_mode_from_videomode(&vm, adjusted_mode);
> > -
> >  	return MODE_OK;
> >  }
> 
> Old code assumed, that adjusted_mode may be NULL. If adjusted_mode
> cannot be NULL, it should be mentioned in the patch description.

I will instead remove the check in the previous patch where it was needlessly 
introduced.
diff mbox series

Patch

diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index ce812094177c..d9f10f41ddfb 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -1127,20 +1127,20 @@  static int dsicm_get_modes(struct omap_dss_device *dssdev,
 }
 
 static int dsicm_check_timings(struct omap_dss_device *dssdev,
-			       struct videomode *vm)
+			       struct drm_display_mode *mode)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	int ret = 0;
 
-	if (vm->hactive != ddata->vm.hactive)
+	if (mode->hdisplay != ddata->vm.hactive)
 		ret = -EINVAL;
 
-	if (vm->vactive != ddata->vm.vactive)
+	if (mode->vdisplay != ddata->vm.vactive)
 		ret = -EINVAL;
 
 	if (ret) {
 		dev_warn(dssdev->dev, "wrong resolution: %d x %d",
-			 vm->hactive, vm->vactive);
+			 mode->hdisplay, mode->vdisplay);
 		dev_warn(dssdev->dev, "panel resolution: %d x %d",
 			 ddata->vm.hactive, ddata->vm.vactive);
 	}
diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index 0db01cadf09f..0cb3cb72f15f 100644
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -459,7 +459,7 @@  static void dpi_display_disable(struct omap_dss_device *dssdev)
 }
 
 static void dpi_set_timings(struct omap_dss_device *dssdev,
-			    const struct videomode *vm)
+			    const struct drm_display_mode *mode)
 {
 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
 
@@ -467,13 +467,13 @@  static void dpi_set_timings(struct omap_dss_device *dssdev,
 
 	mutex_lock(&dpi->lock);
 
-	dpi->vm = *vm;
+	drm_display_mode_to_videomode(mode, &dpi->vm);
 
 	mutex_unlock(&dpi->lock);
 }
 
 static int dpi_check_timings(struct omap_dss_device *dssdev,
-			     struct videomode *vm)
+			     struct drm_display_mode *mode)
 {
 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
 	int lck_div, pck_div;
@@ -482,20 +482,20 @@  static int dpi_check_timings(struct omap_dss_device *dssdev,
 	struct dpi_clk_calc_ctx ctx;
 	bool ok;
 
-	if (vm->hactive % 8 != 0)
+	if (mode->hdisplay % 8 != 0)
 		return -EINVAL;
 
-	if (vm->pixelclock == 0)
+	if (mode->clock == 0)
 		return -EINVAL;
 
 	if (dpi->pll) {
-		ok = dpi_pll_clk_calc(dpi, vm->pixelclock, &ctx);
+		ok = dpi_pll_clk_calc(dpi, mode->clock * 1000, &ctx);
 		if (!ok)
 			return -EINVAL;
 
 		fck = ctx.pll_cinfo.clkout[ctx.clkout_idx];
 	} else {
-		ok = dpi_dss_clk_calc(dpi, vm->pixelclock, &ctx);
+		ok = dpi_dss_clk_calc(dpi, mode->clock * 1000, &ctx);
 		if (!ok)
 			return -EINVAL;
 
@@ -507,7 +507,7 @@  static int dpi_check_timings(struct omap_dss_device *dssdev,
 
 	pck = fck / lck_div / pck_div;
 
-	vm->pixelclock = pck;
+	mode->clock = pck / 1000;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index 60792981a33f..4337380b1bf7 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -249,15 +249,15 @@  static void hdmi_power_off_full(struct omap_hdmi *hdmi)
 }
 
 static void hdmi_display_set_timings(struct omap_dss_device *dssdev,
-				     const struct videomode *vm)
+				     const struct drm_display_mode *mode)
 {
 	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
 
 	mutex_lock(&hdmi->lock);
 
-	hdmi->cfg.vm = *vm;
+	drm_display_mode_to_videomode(mode, &hdmi->cfg.vm);
 
-	dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);
+	dispc_set_tv_pclk(hdmi->dss->dispc, mode->clock * 1000);
 
 	mutex_unlock(&hdmi->lock);
 }
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
index d7d33b4d2bed..b94f884c5c1a 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
@@ -248,15 +248,15 @@  static void hdmi_power_off_full(struct omap_hdmi *hdmi)
 }
 
 static void hdmi_display_set_timings(struct omap_dss_device *dssdev,
-				     const struct videomode *vm)
+				     const struct drm_display_mode *mode)
 {
 	struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
 
 	mutex_lock(&hdmi->lock);
 
-	hdmi->cfg.vm = *vm;
+	drm_display_mode_to_videomode(mode, &hdmi->cfg.vm);
 
-	dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);
+	dispc_set_tv_pclk(hdmi->dss->dispc, mode->clock * 1000);
 
 	mutex_unlock(&hdmi->lock);
 }
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 80db32bc896f..d990009ddbbd 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -366,9 +366,9 @@  struct omap_dss_device_ops {
 	void (*post_disable)(struct omap_dss_device *dssdev);
 
 	int (*check_timings)(struct omap_dss_device *dssdev,
-			     struct videomode *vm);
+			     struct drm_display_mode *mode);
 	void (*set_timings)(struct omap_dss_device *dssdev,
-			    const struct videomode *vm);
+			    const struct drm_display_mode *mode);
 
 	bool (*detect)(struct omap_dss_device *dssdev);
 
diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c
index 58c17566a4cb..f096a7f77e5f 100644
--- a/drivers/gpu/drm/omapdrm/dss/sdi.c
+++ b/drivers/gpu/drm/omapdrm/dss/sdi.c
@@ -206,36 +206,37 @@  static void sdi_display_disable(struct omap_dss_device *dssdev)
 }
 
 static void sdi_set_timings(struct omap_dss_device *dssdev,
-			    const struct videomode *vm)
+			    const struct drm_display_mode *mode)
 {
 	struct sdi_device *sdi = dssdev_to_sdi(dssdev);
 
-	sdi->vm = *vm;
+	drm_display_mode_to_videomode(mode, &sdi->vm);
 }
 
 static int sdi_check_timings(struct omap_dss_device *dssdev,
-			     struct videomode *vm)
+			     struct drm_display_mode *mode)
 {
 	struct sdi_device *sdi = dssdev_to_sdi(dssdev);
 	struct dispc_clock_info dispc_cinfo;
+	unsigned long pixelclock = mode->clock * 1000;
 	unsigned long fck;
 	unsigned long pck;
 	int r;
 
-	if (vm->pixelclock == 0)
+	if (pixelclock == 0)
 		return -EINVAL;
 
-	r = sdi_calc_clock_div(sdi, vm->pixelclock, &fck, &dispc_cinfo);
+	r = sdi_calc_clock_div(sdi, pixelclock, &fck, &dispc_cinfo);
 	if (r)
 		return r;
 
 	pck = fck / dispc_cinfo.lck_div / dispc_cinfo.pck_div;
 
-	if (pck != vm->pixelclock) {
+	if (pck != pixelclock) {
 		DSSWARN("Pixel clock adjusted from %lu Hz to %lu Hz\n",
-			vm->pixelclock, pck);
+			pixelclock, pck);
 
-		vm->pixelclock = pck;
+		mode->clock = pck / 1000;
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c
index 6cb708e1944e..7bce5898654a 100644
--- a/drivers/gpu/drm/omapdrm/dss/venc.c
+++ b/drivers/gpu/drm/omapdrm/dss/venc.c
@@ -544,29 +544,29 @@  static int venc_get_modes(struct omap_dss_device *dssdev,
 	return ARRAY_SIZE(modes);
 }
 
-static enum venc_videomode venc_get_videomode(const struct videomode *vm)
+static enum venc_videomode venc_get_videomode(const struct drm_display_mode *mode)
 {
-	if (!(vm->flags & DISPLAY_FLAGS_INTERLACED))
+	if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
 		return VENC_MODE_UNKNOWN;
 
-	if (vm->pixelclock == omap_dss_pal_vm.pixelclock &&
-	    vm->hactive == omap_dss_pal_vm.hactive &&
-	    vm->vactive == omap_dss_pal_vm.vactive)
+	if (mode->clock == omap_dss_pal_vm.pixelclock / 1000 &&
+	    mode->hdisplay == omap_dss_pal_vm.hactive &&
+	    mode->vdisplay == omap_dss_pal_vm.vactive)
 		return VENC_MODE_PAL;
 
-	if (vm->pixelclock == omap_dss_ntsc_vm.pixelclock &&
-	    vm->hactive == omap_dss_ntsc_vm.hactive &&
-	    vm->vactive == omap_dss_ntsc_vm.vactive)
+	if (mode->clock == omap_dss_ntsc_vm.pixelclock / 1000 &&
+	    mode->hdisplay == omap_dss_ntsc_vm.hactive &&
+	    mode->vdisplay == omap_dss_ntsc_vm.vactive)
 		return VENC_MODE_NTSC;
 
 	return VENC_MODE_UNKNOWN;
 }
 
 static void venc_set_timings(struct omap_dss_device *dssdev,
-			     const struct videomode *vm)
+			     const struct drm_display_mode *mode)
 {
 	struct venc_device *venc = dssdev_to_venc(dssdev);
-	enum venc_videomode venc_mode = venc_get_videomode(vm);
+	enum venc_videomode venc_mode = venc_get_videomode(mode);
 
 	DSSDBG("venc_set_timings\n");
 
@@ -591,17 +591,17 @@  static void venc_set_timings(struct omap_dss_device *dssdev,
 }
 
 static int venc_check_timings(struct omap_dss_device *dssdev,
-			      struct videomode *vm)
+			      struct drm_display_mode *mode)
 {
 	DSSDBG("venc_check_timings\n");
 
-	switch (venc_get_videomode(vm)) {
+	switch (venc_get_videomode(mode)) {
 	case VENC_MODE_PAL:
-		*vm = omap_dss_pal_vm;
+		drm_display_mode_from_videomode(&omap_dss_pal_vm, mode);
 		return 0;
 
 	case VENC_MODE_NTSC:
-		*vm = omap_dss_ntsc_vm;
+		drm_display_mode_from_videomode(&omap_dss_ntsc_vm, mode);
 		return 0;
 
 	default:
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 9882a4b1402b..487603c56b08 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -245,23 +245,19 @@  enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev,
 					const struct drm_display_mode *mode,
 					struct drm_display_mode *adjusted_mode)
 {
-	struct videomode vm = { 0 };
 	int ret;
 
-	drm_display_mode_to_videomode(mode, &vm);
+	drm_mode_copy(adjusted_mode, mode);
 
 	for (; dssdev; dssdev = dssdev->next) {
 		if (!dssdev->ops->check_timings)
 			continue;
 
-		ret = dssdev->ops->check_timings(dssdev, &vm);
+		ret = dssdev->ops->check_timings(dssdev, adjusted_mode);
 		if (ret)
 			return MODE_BAD;
 	}
 
-	if (adjusted_mode)
-		drm_display_mode_from_videomode(&vm, adjusted_mode);
-
 	return MODE_OK;
 }
 
diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
index 086963088201..4fb8b3fbd688 100644
--- a/drivers/gpu/drm/omapdrm/omap_encoder.c
+++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
@@ -107,7 +107,7 @@  static void omap_encoder_mode_set(struct drm_encoder *encoder,
 
 	for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) {
 		if (dssdev->ops->set_timings)
-			dssdev->ops->set_timings(dssdev, &vm);
+			dssdev->ops->set_timings(dssdev, adjusted_mode);
 	}
 
 	/* Set the HDMI mode and HDMI infoframe if applicable. */