drm/omap: Don't call .set_timings() operation recursively

Instead of calling the .set_timings() operation recursively from the
display device backwards, iterate over the devices manually in the DRM
encoder code. This moves the complexity to a single central location and
simplifies the logic in omap_dss_device drivers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c

@@ -73,22 +73,12 @@ static void tvc_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void tvc_set_timings(struct omap_dss_device *dssdev,
-			    const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static const struct omap_dss_device_ops tvc_ops = {
 	.connect		= tvc_connect,
 	.disconnect		= tvc_disconnect,
 
 	.enable			= tvc_enable,
 	.disable		= tvc_disable,
-
-	.set_timings		= tvc_set_timings,
 };
 
 static int tvc_probe(struct platform_device *pdev)

drivers/gpu/drm/omapdrm/displays/connector-dvi.c

@@ -78,14 +78,6 @@ static void dvic_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void dvic_set_timings(struct omap_dss_device *dssdev,
-			     const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static int dvic_ddc_read(struct i2c_adapter *adapter,
 		unsigned char *buf, u16 count, u8 offset)
 {
@@ -192,8 +184,6 @@ static const struct omap_dss_device_ops dvic_ops = {
 	.enable		= dvic_enable,
 	.disable	= dvic_disable,
 
-	.set_timings	= dvic_set_timings,
-
 	.read_edid	= dvic_read_edid,
 	.detect		= dvic_detect,
 

drivers/gpu/drm/omapdrm/displays/connector-hdmi.c

@@ -79,14 +79,6 @@ static void hdmic_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void hdmic_set_timings(struct omap_dss_device *dssdev,
-			      const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static bool hdmic_detect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
@@ -124,8 +116,6 @@ static const struct omap_dss_device_ops hdmic_ops = {
 	.enable			= hdmic_enable,
 	.disable		= hdmic_disable,
 
-	.set_timings		= hdmic_set_timings,
-
 	.detect			= hdmic_detect,
 	.register_hpd_cb	= hdmic_register_hpd_cb,
 	.unregister_hpd_cb	= hdmic_unregister_hpd_cb,

drivers/gpu/drm/omapdrm/displays/encoder-opa362.c

@@ -85,22 +85,11 @@ static void opa362_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void opa362_set_timings(struct omap_dss_device *dssdev,
-			       const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	dev_dbg(dssdev->dev, "set_timings\n");
-
-	src->ops->set_timings(src, vm);
-}
-
 static const struct omap_dss_device_ops opa362_ops = {
 	.connect	= opa362_connect,
 	.disconnect	= opa362_disconnect,
 	.enable		= opa362_enable,
 	.disable	= opa362_disable,
-	.set_timings	= opa362_set_timings,
 };
 
 static int opa362_probe(struct platform_device *pdev)

drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c

@@ -76,20 +76,11 @@ static void tfp410_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void tfp410_set_timings(struct omap_dss_device *dssdev,
-			       const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static const struct omap_dss_device_ops tfp410_ops = {
 	.connect	= tfp410_connect,
 	.disconnect	= tfp410_disconnect,
 	.enable		= tfp410_enable,
 	.disable	= tfp410_disable,
-	.set_timings	= tfp410_set_timings,
 };
 
 static int tfp410_probe(struct platform_device *pdev)

drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c

@@ -91,14 +91,6 @@ static void tpd_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void tpd_set_timings(struct omap_dss_device *dssdev,
-			    const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static bool tpd_detect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
@@ -134,7 +126,6 @@ static const struct omap_dss_device_ops tpd_ops = {
 	.disconnect		= tpd_disconnect,
 	.enable			= tpd_enable,
 	.disable		= tpd_disable,
-	.set_timings		= tpd_set_timings,
 	.detect			= tpd_detect,
 	.register_hpd_cb	= tpd_register_hpd_cb,
 	.unregister_hpd_cb	= tpd_unregister_hpd_cb,

drivers/gpu/drm/omapdrm/displays/panel-dpi.c

@@ -93,14 +93,6 @@ static void panel_dpi_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void panel_dpi_set_timings(struct omap_dss_device *dssdev,
-				  const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void panel_dpi_get_timings(struct omap_dss_device *dssdev,
 				  struct videomode *vm)
 {
@@ -116,7 +108,6 @@ static const struct omap_dss_device_ops panel_dpi_ops = {
 	.enable		= panel_dpi_enable,
 	.disable	= panel_dpi_disable,
 
-	.set_timings	= panel_dpi_set_timings,
 	.get_timings	= panel_dpi_get_timings,
 };
 

drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c

@@ -163,14 +163,6 @@ static void lb035q02_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void lb035q02_set_timings(struct omap_dss_device *dssdev,
-				 const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void lb035q02_get_timings(struct omap_dss_device *dssdev,
 				 struct videomode *vm)
 {
@@ -186,7 +178,6 @@ static const struct omap_dss_device_ops lb035q02_ops = {
 	.enable		= lb035q02_enable,
 	.disable	= lb035q02_disable,
 
-	.set_timings	= lb035q02_set_timings,
 	.get_timings	= lb035q02_get_timings,
 };
 

drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c

@@ -156,14 +156,6 @@ static void nec_8048_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void nec_8048_set_timings(struct omap_dss_device *dssdev,
-				 const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void nec_8048_get_timings(struct omap_dss_device *dssdev,
 				 struct videomode *vm)
 {
@@ -179,7 +171,6 @@ static const struct omap_dss_device_ops nec_8048_ops = {
 	.enable		= nec_8048_enable,
 	.disable	= nec_8048_disable,
 
-	.set_timings	= nec_8048_set_timings,
 	.get_timings	= nec_8048_get_timings,
 };
 

drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c

@@ -126,14 +126,6 @@ static void sharp_ls_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void sharp_ls_set_timings(struct omap_dss_device *dssdev,
-				 const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void sharp_ls_get_timings(struct omap_dss_device *dssdev,
 				 struct videomode *vm)
 {
@@ -149,7 +141,6 @@ static const struct omap_dss_device_ops sharp_ls_ops = {
 	.enable		= sharp_ls_enable,
 	.disable	= sharp_ls_disable,
 
-	.set_timings	= sharp_ls_set_timings,
 	.get_timings	= sharp_ls_get_timings,
 };
 

drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c

@@ -629,14 +629,6 @@ static void acx565akm_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void acx565akm_set_timings(struct omap_dss_device *dssdev,
-				  const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void acx565akm_get_timings(struct omap_dss_device *dssdev,
 				  struct videomode *vm)
 {
@@ -652,7 +644,6 @@ static const struct omap_dss_device_ops acx565akm_ops = {
 	.enable		= acx565akm_enable,
 	.disable	= acx565akm_disable,
 
-	.set_timings	= acx565akm_set_timings,
 	.get_timings	= acx565akm_get_timings,
 };
 

drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c

@@ -295,14 +295,6 @@ static void td028ttec1_panel_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void td028ttec1_panel_set_timings(struct omap_dss_device *dssdev,
-					 const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void td028ttec1_panel_get_timings(struct omap_dss_device *dssdev,
 					 struct videomode *vm)
 {
@@ -318,7 +310,6 @@ static const struct omap_dss_device_ops td028ttec1_ops = {
 	.enable		= td028ttec1_panel_enable,
 	.disable	= td028ttec1_panel_disable,
 
-	.set_timings	= td028ttec1_panel_set_timings,
 	.get_timings	= td028ttec1_panel_get_timings,
 };
 

drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c

@@ -369,14 +369,6 @@ static void tpo_td043_disable(struct omap_dss_device *dssdev)
 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 }
 
-static void tpo_td043_set_timings(struct omap_dss_device *dssdev,
-				  const struct videomode *vm)
-{
-	struct omap_dss_device *src = dssdev->src;
-
-	src->ops->set_timings(src, vm);
-}
-
 static void tpo_td043_get_timings(struct omap_dss_device *dssdev,
 				  struct videomode *vm)
 {
@@ -392,7 +384,6 @@ static const struct omap_dss_device_ops tpo_td043_ops = {
 	.enable		= tpo_td043_enable,
 	.disable	= tpo_td043_disable,
 
-	.set_timings	= tpo_td043_set_timings,
 	.get_timings	= tpo_td043_get_timings,
 };
 

drivers/gpu/drm/omapdrm/dss/dpi.c

@@ -477,8 +477,6 @@ static void dpi_set_timings(struct omap_dss_device *dssdev,
 
 	dpi->vm = *vm;
 
-	dss_mgr_set_timings(&dpi->output, vm);
-
 	mutex_unlock(&dpi->lock);
 }
 

drivers/gpu/drm/omapdrm/dss/hdmi4.c

@@ -259,8 +259,6 @@ static void hdmi_display_set_timings(struct omap_dss_device *dssdev,
 
 	dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);
 
-	dss_mgr_set_timings(&hdmi->output, vm);
-
 	mutex_unlock(&hdmi->lock);
 }
 

drivers/gpu/drm/omapdrm/dss/hdmi5.c

@@ -258,8 +258,6 @@ static void hdmi_display_set_timings(struct omap_dss_device *dssdev,
 
 	dispc_set_tv_pclk(hdmi->dss->dispc, vm->pixelclock);
 
-	dss_mgr_set_timings(&hdmi->output, vm);
-
 	mutex_unlock(&hdmi->lock);
 }
 

drivers/gpu/drm/omapdrm/dss/sdi.c

@@ -218,8 +218,6 @@ static void sdi_set_timings(struct omap_dss_device *dssdev,
 	struct sdi_device *sdi = dssdev_to_sdi(dssdev);
 
 	sdi->vm = *vm;
-
-	dss_mgr_set_timings(&sdi->output, vm);
 }
 
 static int sdi_check_timings(struct omap_dss_device *dssdev,

drivers/gpu/drm/omapdrm/dss/venc.c

@@ -593,8 +593,6 @@ static void venc_set_timings(struct omap_dss_device *dssdev,
 
 	dispc_set_tv_pclk(venc->dss->dispc, 13500000);
 
-	dss_mgr_set_timings(&venc->output, vm);
-
 	mutex_unlock(&venc->venc_lock);
 }
 

drivers/gpu/drm/omapdrm/omap_encoder.c

@@ -58,7 +58,6 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
 {
 	struct drm_device *dev = encoder->dev;
 	struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
-	struct omap_dss_device *display = omap_encoder->display;
 	struct drm_connector *connector;
 	struct omap_dss_device *dssdev;
 	struct videomode vm = { 0 };
@@ -104,18 +103,15 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
 		}
 	}
 
-	/*
-	 * HACK: Call the .set_timings() operation if available, this will
-	 * eventually store timings in the CRTC. Otherwise (for DSI outputs)
-	 * store the timings directly.
-	 *
-	 * All outputs should be brought in sync to operate similarly.
-	 */
-	if (display->ops->set_timings)
-		display->ops->set_timings(display, &vm);
-	else
-		*omap_crtc_timings(encoder->crtc) = vm;
+	/* Set timings for all devices in the display pipeline. */
+	dss_mgr_set_timings(omap_encoder->output, &vm);
+
+	for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) {
+		if (dssdev->ops->set_timings)
+			dssdev->ops->set_timings(dssdev, &vm);
+	}
 
+	/* Set the HDMI mode and HDMI infoframe if applicable. */
 	hdmi_mode = false;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		if (connector->encoder == encoder) {