Hi,
On Wed, Dec 05, 2018 at 05:00:02PM +0200, Laurent Pinchart wrote:
> The omapdrm and omapdss drivers are architectured based on display
> pipelines made of multiple components handled from sink (display) to
> source (DSS output). This is incompatible with the DRM bridge and panel
> APIs that handle components from source to sink.
>
> Reconcile the omapdrm and omapdss drivers with the DRM bridge and panel
> model by reversing the direction of the DSS device .enable() and
> .disable() operations. This completes the move to the DRM bridge model,
> with the notable exception of the DSI pipelines that will require more
> work.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
-- Sebastian
> .../omapdrm/displays/connector-analog-tv.c | 21 --------
> .../gpu/drm/omapdrm/displays/connector-dvi.c | 21 --------
> .../gpu/drm/omapdrm/displays/connector-hdmi.c | 21 --------
> .../gpu/drm/omapdrm/displays/encoder-opa362.c | 25 +--------
> .../gpu/drm/omapdrm/displays/encoder-tfp410.c | 21 +-------
> .../drm/omapdrm/displays/encoder-tpd12s015.c | 35 -------------
> drivers/gpu/drm/omapdrm/displays/panel-dpi.c | 18 ++-----
> .../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 22 +++-----
> .../displays/panel-lgphilips-lb035q02.c | 16 +-----
> .../omapdrm/displays/panel-nec-nl8048hl11.c | 16 +-----
> .../displays/panel-sharp-ls037v7dw01.c | 32 ++++++------
> .../omapdrm/displays/panel-sony-acx565akm.c | 18 +------
> .../omapdrm/displays/panel-tpo-td028ttec1.c | 25 +++------
> .../omapdrm/displays/panel-tpo-td043mtea1.c | 17 ++----
> drivers/gpu/drm/omapdrm/dss/base.c | 52 +++++++++++++++++++
> drivers/gpu/drm/omapdrm/dss/dpi.c | 5 +-
> drivers/gpu/drm/omapdrm/dss/dsi.c | 7 ++-
> drivers/gpu/drm/omapdrm/dss/hdmi4.c | 12 ++---
> drivers/gpu/drm/omapdrm/dss/hdmi5.c | 12 ++---
> drivers/gpu/drm/omapdrm/dss/omapdss.h | 8 ++-
> drivers/gpu/drm/omapdrm/dss/sdi.c | 8 ++-
> drivers/gpu/drm/omapdrm/dss/venc.c | 12 +----
> drivers/gpu/drm/omapdrm/omap_encoder.c | 49 +++++++++++++----
> 23 files changed, 163 insertions(+), 310 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c
> index 2b5b77627cfb..1503563117f3 100644
> --- a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c
> +++ b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c
> @@ -35,26 +35,9 @@ static void tvc_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int tvc_enable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - return src->ops->enable(src);
> -}
> -
> -static void tvc_disable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - src->ops->disable(src);
> -}
> -
> static const struct omap_dss_device_ops tvc_ops = {
> .connect = tvc_connect,
> .disconnect = tvc_disconnect,
> -
> - .enable = tvc_enable,
> - .disable = tvc_disable,
> };
>
> static int tvc_probe(struct platform_device *pdev)
> @@ -85,13 +68,9 @@ static int tvc_probe(struct platform_device *pdev)
> static int __exit tvc_remove(struct platform_device *pdev)
> {
> struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> - struct omap_dss_device *dssdev = &ddata->dssdev;
>
> omapdss_device_unregister(&ddata->dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> - tvc_disable(dssdev);
> -
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
> index a1784e263835..bf5ee50ce5fe 100644
> --- a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
> +++ b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
> @@ -46,20 +46,6 @@ static void dvic_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int dvic_enable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - return src->ops->enable(src);
> -}
> -
> -static void dvic_disable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - src->ops->disable(src);
> -}
> -
> static int dvic_ddc_read(struct i2c_adapter *adapter,
> unsigned char *buf, u16 count, u8 offset)
> {
> @@ -163,9 +149,6 @@ static const struct omap_dss_device_ops dvic_ops = {
> .connect = dvic_connect,
> .disconnect = dvic_disconnect,
>
> - .enable = dvic_enable,
> - .disable = dvic_disable,
> -
> .read_edid = dvic_read_edid,
> .detect = dvic_detect,
>
> @@ -275,13 +258,9 @@ static int dvic_probe(struct platform_device *pdev)
> static int __exit dvic_remove(struct platform_device *pdev)
> {
> struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> - struct omap_dss_device *dssdev = &ddata->dssdev;
>
> omapdss_device_unregister(&ddata->dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> - dvic_disable(dssdev);
> -
> i2c_put_adapter(ddata->i2c_adapter);
>
> mutex_destroy(&ddata->hpd_lock);
> diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
> index 05cd503c4d29..797da4a3f22e 100644
> --- a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
> +++ b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
> @@ -41,20 +41,6 @@ static void hdmic_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int hdmic_enable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - return src->ops->enable(src);
> -}
> -
> -static void hdmic_disable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - src->ops->disable(src);
> -}
> -
> static bool hdmic_detect(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> @@ -89,9 +75,6 @@ static const struct omap_dss_device_ops hdmic_ops = {
> .connect = hdmic_connect,
> .disconnect = hdmic_disconnect,
>
> - .enable = hdmic_enable,
> - .disable = hdmic_disable,
> -
> .detect = hdmic_detect,
> .register_hpd_cb = hdmic_register_hpd_cb,
> .unregister_hpd_cb = hdmic_unregister_hpd_cb,
> @@ -172,13 +155,9 @@ static int hdmic_probe(struct platform_device *pdev)
> static int __exit hdmic_remove(struct platform_device *pdev)
> {
> struct panel_drv_data *ddata = platform_get_drvdata(pdev);
> - struct omap_dss_device *dssdev = &ddata->dssdev;
>
> omapdss_device_unregister(&ddata->dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> - hdmic_disable(dssdev);
> -
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c
> index ce116c28479f..fc5e0c47054d 100644
> --- a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c
> +++ b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c
> @@ -41,39 +41,20 @@ static void opa362_disconnect(struct omap_dss_device *src,
> omapdss_device_disconnect(dst, dst->next);
> }
>
> -static int opa362_enable(struct omap_dss_device *dssdev)
> +static void opa362_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> - int r;
> -
> - dev_dbg(dssdev->dev, "enable\n");
> -
> - r = src->ops->enable(src);
> - if (r)
> - return r;
>
> if (ddata->enable_gpio)
> gpiod_set_value_cansleep(ddata->enable_gpio, 1);
> -
> - dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
> -
> - return 0;
> }
>
> static void opa362_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> -
> - dev_dbg(dssdev->dev, "disable\n");
>
> if (ddata->enable_gpio)
> gpiod_set_value_cansleep(ddata->enable_gpio, 0);
> -
> - src->ops->disable(src);
> -
> - dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
> }
>
> static const struct omap_dss_device_ops opa362_ops = {
> @@ -132,9 +113,7 @@ static int __exit opa362_remove(struct platform_device *pdev)
> omapdss_device_put(dssdev->next);
> omapdss_device_unregister(&ddata->dssdev);
>
> - WARN_ON(omapdss_device_is_enabled(dssdev));
> - if (omapdss_device_is_enabled(dssdev))
> - opa362_disable(dssdev);
> + opa362_disable(dssdev);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c b/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c
> index d51410ed1e13..82035078377a 100644
> --- a/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c
> +++ b/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c
> @@ -36,35 +36,20 @@ static void tfp410_disconnect(struct omap_dss_device *src,
> omapdss_device_disconnect(dst, dst->next);
> }
>
> -static int tfp410_enable(struct omap_dss_device *dssdev)
> +static void tfp410_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> - int r;
> -
> - r = src->ops->enable(src);
> - if (r)
> - return r;
>
> if (ddata->pd_gpio)
> gpiod_set_value_cansleep(ddata->pd_gpio, 0);
> -
> - dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
> -
> - return 0;
> }
>
> static void tfp410_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> if (ddata->pd_gpio)
> gpiod_set_value_cansleep(ddata->pd_gpio, 0);
> -
> - src->ops->disable(src);
> -
> - dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
> }
>
> static const struct omap_dss_device_ops tfp410_ops = {
> @@ -126,9 +111,7 @@ static int __exit tfp410_remove(struct platform_device *pdev)
> omapdss_device_put(dssdev->next);
> omapdss_device_unregister(&ddata->dssdev);
>
> - WARN_ON(omapdss_device_is_enabled(dssdev));
> - if (omapdss_device_is_enabled(dssdev))
> - tfp410_disable(dssdev);
> + tfp410_disable(dssdev);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
> index 1a2bc59bf104..ced36718a95f 100644
> --- a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
> +++ b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
> @@ -62,35 +62,6 @@ static void tpd_disconnect(struct omap_dss_device *src,
> omapdss_device_disconnect(dst, dst->next);
> }
>
> -static int tpd_enable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> - int r;
> -
> - if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
> - return 0;
> -
> - r = src->ops->enable(src);
> - if (r)
> - return r;
> -
> - dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
> -
> - return r;
> -}
> -
> -static void tpd_disable(struct omap_dss_device *dssdev)
> -{
> - struct omap_dss_device *src = dssdev->src;
> -
> - if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
> - return;
> -
> - src->ops->disable(src);
> -
> - dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
> -}
> -
> static bool tpd_detect(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> @@ -124,8 +95,6 @@ static void tpd_unregister_hpd_cb(struct omap_dss_device *dssdev)
> static const struct omap_dss_device_ops tpd_ops = {
> .connect = tpd_connect,
> .disconnect = tpd_disconnect,
> - .enable = tpd_enable,
> - .disable = tpd_disable,
> .detect = tpd_detect,
> .register_hpd_cb = tpd_register_hpd_cb,
> .unregister_hpd_cb = tpd_unregister_hpd_cb,
> @@ -225,10 +194,6 @@ static int __exit tpd_remove(struct platform_device *pdev)
> omapdss_device_put(dssdev->next);
> omapdss_device_unregister(&ddata->dssdev);
>
> - WARN_ON(omapdss_device_is_enabled(dssdev));
> - if (omapdss_device_is_enabled(dssdev))
> - tpd_disable(dssdev);
> -
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
> index 5ca774c712a6..c9d736f5eac0 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
> @@ -45,39 +45,27 @@ static void panel_dpi_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int panel_dpi_enable(struct omap_dss_device *dssdev)
> +static void panel_dpi_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> int r;
>
> - r = src->ops->enable(src);
> - if (r)
> - return r;
> -
> r = regulator_enable(ddata->vcc_supply);
> - if (r) {
> - src->ops->disable(src);
> - return r;
> - }
> + if (r)
> + return;
>
> gpiod_set_value_cansleep(ddata->enable_gpio, 1);
> backlight_enable(ddata->backlight);
> -
> - return 0;
> }
>
> static void panel_dpi_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> backlight_disable(ddata->backlight);
>
> gpiod_set_value_cansleep(ddata->enable_gpio, 0);
> regulator_disable(ddata->vcc_supply);
> -
> - src->ops->disable(src);
> }
>
> static void panel_dpi_get_timings(struct omap_dss_device *dssdev,
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> index a7c8688237fb..ffbf20e6ebe9 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> @@ -315,12 +315,7 @@ static int dsicm_exit_ulps(struct panel_drv_data *ddata)
> if (!ddata->ulps_enabled)
> return 0;
>
> - r = src->ops->enable(src);
> - if (r) {
> - dev_err(&ddata->pdev->dev, "failed to enable DSI\n");
> - goto err1;
> - }
> -
> + src->ops->enable(src);
> src->ops->dsi.enable_hs(src, ddata->channel, true);
>
> r = _dsicm_enable_te(ddata, true);
> @@ -347,7 +342,7 @@ static int dsicm_exit_ulps(struct panel_drv_data *ddata)
> enable_irq(gpiod_to_irq(ddata->ext_te_gpio));
> ddata->ulps_enabled = false;
> }
> -err1:
> +
> dsicm_queue_ulps_work(ddata);
>
> return r;
> @@ -649,11 +644,7 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
> goto err_vddi;
> }
>
> - r = src->ops->enable(src);
> - if (r) {
> - dev_err(&ddata->pdev->dev, "failed to enable DSI\n");
> - goto err_vddi;
> - }
> + src->ops->enable(src);
>
> dsicm_hw_reset(ddata);
>
> @@ -787,7 +778,7 @@ static void dsicm_disconnect(struct omap_dss_device *src,
> src->ops->dsi.release_vc(src, ddata->channel);
> }
>
> -static int dsicm_enable(struct omap_dss_device *dssdev)
> +static void dsicm_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> struct omap_dss_device *src = dssdev->src;
> @@ -808,11 +799,10 @@ static int dsicm_enable(struct omap_dss_device *dssdev)
>
> dsicm_bl_power(ddata, true);
>
> - return 0;
> + return;
> err:
> - dev_dbg(&ddata->pdev->dev, "enable failed\n");
> + dev_dbg(&ddata->pdev->dev, "enable failed (%d)\n", r);
> mutex_unlock(&ddata->lock);
> - return r;
> }
>
> static void dsicm_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
> index 2c3b15ba5a39..e043cab0a0c9 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c
> @@ -123,31 +123,20 @@ static void lb035q02_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int lb035q02_enable(struct omap_dss_device *dssdev)
> +static void lb035q02_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> - int r;
> -
> - r = src->ops->enable(src);
> - if (r)
> - return r;
>
> if (ddata->enable_gpio)
> gpiod_set_value_cansleep(ddata->enable_gpio, 1);
> -
> - return 0;
> }
>
> static void lb035q02_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> if (ddata->enable_gpio)
> gpiod_set_value_cansleep(ddata->enable_gpio, 0);
> -
> - src->ops->disable(src);
> }
>
> static void lb035q02_get_timings(struct omap_dss_device *dssdev,
> @@ -232,8 +221,7 @@ static int lb035q02_panel_spi_remove(struct spi_device *spi)
>
> omapdss_device_unregister(dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> - lb035q02_disable(dssdev);
> + lb035q02_disable(dssdev);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
> index ef83459611be..44fd6134317d 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c
> @@ -118,29 +118,18 @@ static void nec_8048_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int nec_8048_enable(struct omap_dss_device *dssdev)
> +static void nec_8048_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> - int r;
> -
> - r = src->ops->enable(src);
> - if (r)
> - return r;
>
> gpiod_set_value_cansleep(ddata->res_gpio, 1);
> -
> - return 0;
> }
>
> static void nec_8048_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> gpiod_set_value_cansleep(ddata->res_gpio, 0);
> -
> - src->ops->disable(src);
> }
>
> static void nec_8048_get_timings(struct omap_dss_device *dssdev,
> @@ -223,8 +212,7 @@ static int nec_8048_remove(struct spi_device *spi)
>
> omapdss_device_unregister(dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> - nec_8048_disable(dssdev);
> + nec_8048_disable(dssdev);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
> index 0c5b405b4c9e..907abf8ef4e6 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c
> @@ -62,23 +62,22 @@ static void sharp_ls_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int sharp_ls_enable(struct omap_dss_device *dssdev)
> +static void sharp_ls_pre_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> int r;
>
> if (ddata->vcc) {
> r = regulator_enable(ddata->vcc);
> - if (r != 0)
> - return r;
> + if (r)
> + dev_err(dssdev->dev, "%s: failed to enable regulator\n",
> + __func__);
> }
> +}
>
> - r = src->ops->enable(src);
> - if (r) {
> - regulator_disable(ddata->vcc);
> - return r;
> - }
> +static void sharp_ls_enable(struct omap_dss_device *dssdev)
> +{
> + struct panel_drv_data *ddata = to_panel_data(dssdev);
>
> /* wait couple of vsyncs until enabling the LCD */
> msleep(50);
> @@ -88,14 +87,11 @@ static int sharp_ls_enable(struct omap_dss_device *dssdev)
>
> if (ddata->ini_gpio)
> gpiod_set_value_cansleep(ddata->ini_gpio, 1);
> -
> - return 0;
> }
>
> static void sharp_ls_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> if (ddata->ini_gpio)
> gpiod_set_value_cansleep(ddata->ini_gpio, 0);
> @@ -104,10 +100,12 @@ static void sharp_ls_disable(struct omap_dss_device *dssdev)
> gpiod_set_value_cansleep(ddata->resb_gpio, 0);
>
> /* wait at least 5 vsyncs after disabling the LCD */
> -
> msleep(100);
> +}
>
> - src->ops->disable(src);
> +static void sharp_ls_post_disable(struct omap_dss_device *dssdev)
> +{
> + struct panel_drv_data *ddata = to_panel_data(dssdev);
>
> if (ddata->vcc)
> regulator_disable(ddata->vcc);
> @@ -125,8 +123,10 @@ static const struct omap_dss_device_ops sharp_ls_ops = {
> .connect = sharp_ls_connect,
> .disconnect = sharp_ls_disconnect,
>
> + .pre_enable = sharp_ls_pre_enable,
> .enable = sharp_ls_enable,
> .disable = sharp_ls_disable,
> + .post_disable = sharp_ls_post_disable,
>
> .get_timings = sharp_ls_get_timings,
> };
> @@ -230,8 +230,10 @@ static int __exit sharp_ls_remove(struct platform_device *pdev)
>
> omapdss_device_unregister(dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> + if (omapdss_device_is_enabled(dssdev)) {
> sharp_ls_disable(dssdev);
> + sharp_ls_post_disable(dssdev);
> + }
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c
> index 99c2c4f27dd5..eeaea752f171 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c
> @@ -516,17 +516,9 @@ static void acx565akm_disconnect(struct omap_dss_device *src,
> static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> - int r;
>
> dev_dbg(&ddata->spi->dev, "%s\n", __func__);
>
> - r = src->ops->enable(src);
> - if (r) {
> - pr_err("%s sdi enable failed\n", __func__);
> - return r;
> - }
> -
> /*FIXME tweak me */
> msleep(50);
>
> @@ -562,7 +554,6 @@ static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
> static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> dev_dbg(dssdev->dev, "%s\n", __func__);
>
> @@ -585,20 +576,15 @@ static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
>
> /* FIXME need to tweak this delay */
> msleep(100);
> -
> - src->ops->disable(src);
> }
>
> -static int acx565akm_enable(struct omap_dss_device *dssdev)
> +static void acx565akm_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - int r;
>
> mutex_lock(&ddata->mutex);
> - r = acx565akm_panel_power_on(dssdev);
> + acx565akm_panel_power_on(dssdev);
> mutex_unlock(&ddata->mutex);
> -
> - return r;
> }
>
> static void acx565akm_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
> index 8551a1df3ad6..f1a5c14407a4 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
> @@ -169,18 +169,12 @@ static void td028ttec1_panel_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int td028ttec1_panel_enable(struct omap_dss_device *dssdev)
> +static void td028ttec1_panel_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> - int r;
> -
> - r = src->ops->enable(src);
> - if (r)
> - return r;
> + int r = 0;
>
> - dev_dbg(dssdev->dev, "td028ttec1_panel_enable() - state %d\n",
> - dssdev->state);
> + dev_dbg(dssdev->dev, "%s: state %d\n", __func__, dssdev->state);
>
> /* three times command zero */
> r |= jbt_ret_write_0(ddata, 0x00);
> @@ -191,8 +185,8 @@ static int td028ttec1_panel_enable(struct omap_dss_device *dssdev)
> usleep_range(1000, 2000);
>
> if (r) {
> - dev_warn(dssdev->dev, "transfer error\n");
> - return -EIO;
> + dev_warn(dssdev->dev, "%s: transfer error\n", __func__);
> + return;
> }
>
> /* deep standby out */
> @@ -262,13 +256,13 @@ static int td028ttec1_panel_enable(struct omap_dss_device *dssdev)
>
> r |= jbt_ret_write_0(ddata, JBT_REG_DISPLAY_ON);
>
> - return r ? -EIO : 0;
> + if (r)
> + dev_err(dssdev->dev, "%s: write error\n", __func__);
> }
>
> static void td028ttec1_panel_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
>
> dev_dbg(dssdev->dev, "td028ttec1_panel_disable()\n");
>
> @@ -276,8 +270,6 @@ static void td028ttec1_panel_disable(struct omap_dss_device *dssdev)
> jbt_reg_write_2(ddata, JBT_REG_OUTPUT_CONTROL, 0x8002);
> jbt_ret_write_0(ddata, JBT_REG_SLEEP_IN);
> jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x00);
> -
> - src->ops->disable(src);
> }
>
> static void td028ttec1_panel_get_timings(struct omap_dss_device *dssdev,
> @@ -354,8 +346,7 @@ static int td028ttec1_panel_remove(struct spi_device *spi)
>
> omapdss_device_unregister(dssdev);
>
> - if (omapdss_device_is_enabled(dssdev))
> - td028ttec1_panel_disable(dssdev);
> + td028ttec1_panel_disable(dssdev);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
> index 527abed69d34..996a16736d10 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c
> @@ -320,16 +320,11 @@ static void tpo_td043_disconnect(struct omap_dss_device *src,
> {
> }
>
> -static int tpo_td043_enable(struct omap_dss_device *dssdev)
> +static void tpo_td043_enable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> int r;
>
> - r = src->ops->enable(src);
> - if (r)
> - return r;
> -
> /*
> * If we are resuming from system suspend, SPI clocks might not be
> * enabled yet, so we'll program the LCD from SPI PM resume callback.
> @@ -337,20 +332,16 @@ static int tpo_td043_enable(struct omap_dss_device *dssdev)
> if (!ddata->spi_suspended) {
> r = tpo_td043_power_on(ddata);
> if (r) {
> - src->ops->disable(src);
> - return r;
> + dev_err(&ddata->spi->dev, "%s: power on failed (%d)\n",
> + __func__, r);
> + return;
> }
> }
> -
> - return 0;
> }
>
> static void tpo_td043_disable(struct omap_dss_device *dssdev)
> {
> struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = dssdev->src;
> -
> - src->ops->disable(src);
>
> if (!ddata->spi_suspended)
> tpo_td043_power_off(ddata);
> diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
> index 787157b00694..61a231d2fef3 100644
> --- a/drivers/gpu/drm/omapdrm/dss/base.c
> +++ b/drivers/gpu/drm/omapdrm/dss/base.c
> @@ -244,6 +244,58 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
> }
> EXPORT_SYMBOL_GPL(omapdss_device_disconnect);
>
> +void omapdss_device_pre_enable(struct omap_dss_device *dssdev)
> +{
> + if (!dssdev)
> + return;
> +
> + omapdss_device_pre_enable(dssdev->next);
> +
> + if (dssdev->ops->pre_enable)
> + dssdev->ops->pre_enable(dssdev);
> +}
> +EXPORT_SYMBOL_GPL(omapdss_device_pre_enable);
> +
> +void omapdss_device_enable(struct omap_dss_device *dssdev)
> +{
> + if (!dssdev)
> + return;
> +
> + if (dssdev->ops->enable)
> + dssdev->ops->enable(dssdev);
> +
> + omapdss_device_enable(dssdev->next);
> +
> + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
> +}
> +EXPORT_SYMBOL_GPL(omapdss_device_enable);
> +
> +void omapdss_device_disable(struct omap_dss_device *dssdev)
> +{
> + if (!dssdev)
> + return;
> +
> + omapdss_device_disable(dssdev->next);
> +
> + if (dssdev->ops->disable)
> + dssdev->ops->disable(dssdev);
> +}
> +EXPORT_SYMBOL_GPL(omapdss_device_disable);
> +
> +void omapdss_device_post_disable(struct omap_dss_device *dssdev)
> +{
> + if (!dssdev)
> + return;
> +
> + if (dssdev->ops->post_disable)
> + dssdev->ops->post_disable(dssdev);
> +
> + omapdss_device_post_disable(dssdev->next);
> +
> + dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
> +}
> +EXPORT_SYMBOL_GPL(omapdss_device_post_disable);
> +
> /* -----------------------------------------------------------------------------
> * Components Handling
> */
> diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
> index 0cf3b220e35f..74e841a2b4eb 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dpi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
> @@ -378,7 +378,7 @@ static void dpi_config_lcd_manager(struct dpi_data *dpi)
> dss_mgr_set_lcd_config(&dpi->output, &dpi->mgr_config);
> }
>
> -static int dpi_display_enable(struct omap_dss_device *dssdev)
> +static void dpi_display_enable(struct omap_dss_device *dssdev)
> {
> struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
> struct omap_dss_device *out = &dpi->output;
> @@ -420,7 +420,7 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
>
> mutex_unlock(&dpi->lock);
>
> - return 0;
> + return;
>
> err_mgr_enable:
> err_set_mode:
> @@ -434,7 +434,6 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
> regulator_disable(dpi->vdds_dsi_reg);
> err_reg_enable:
> mutex_unlock(&dpi->lock);
> - return r;
> }
>
> static void dpi_display_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
> index 180951eb161c..99b34e409159 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dsi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
> @@ -4154,10 +4154,10 @@ static void dsi_display_uninit_dsi(struct dsi_data *dsi, bool disconnect_lanes,
> dsi_pll_uninit(dsi, disconnect_lanes);
> }
>
> -static int dsi_display_enable(struct omap_dss_device *dssdev)
> +static void dsi_display_enable(struct omap_dss_device *dssdev)
> {
> struct dsi_data *dsi = to_dsi_data(dssdev);
> - int r = 0;
> + int r;
>
> DSSDBG("dsi_display_enable\n");
>
> @@ -4177,14 +4177,13 @@ static int dsi_display_enable(struct omap_dss_device *dssdev)
>
> mutex_unlock(&dsi->lock);
>
> - return 0;
> + return;
>
> err_init_dsi:
> dsi_runtime_put(dsi);
> err_get_dsi:
> mutex_unlock(&dsi->lock);
> DSSDBG("dsi_display_enable FAILED\n");
> - return r;
> }
>
> static void dsi_display_disable(struct omap_dss_device *dssdev,
> diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> index b6b44f07c74e..6f88fb4d6344 100644
> --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> @@ -312,11 +312,11 @@ static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
> hdmi_wp_audio_enable(&hd->wp, false);
> }
>
> -static int hdmi_display_enable(struct omap_dss_device *dssdev)
> +static void hdmi_display_enable(struct omap_dss_device *dssdev)
> {
> struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
> unsigned long flags;
> - int r = 0;
> + int r;
>
> DSSDBG("ENTER hdmi_display_enable\n");
>
> @@ -325,7 +325,7 @@ static int hdmi_display_enable(struct omap_dss_device *dssdev)
> r = hdmi_power_on_full(hdmi);
> if (r) {
> DSSERR("failed to power on device\n");
> - goto err0;
> + goto done;
> }
>
> if (hdmi->audio_configured) {
> @@ -345,12 +345,8 @@ static int hdmi_display_enable(struct omap_dss_device *dssdev)
> hdmi->display_enabled = true;
> spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
>
> +done:
> mutex_unlock(&hdmi->lock);
> - return 0;
> -
> -err0:
> - mutex_unlock(&hdmi->lock);
> - return r;
> }
>
> static void hdmi_display_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
> index beef25703eab..28cf1c32b158 100644
> --- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
> +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
> @@ -320,11 +320,11 @@ static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
> REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2);
> }
>
> -static int hdmi_display_enable(struct omap_dss_device *dssdev)
> +static void hdmi_display_enable(struct omap_dss_device *dssdev)
> {
> struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev);
> unsigned long flags;
> - int r = 0;
> + int r;
>
> DSSDBG("ENTER hdmi_display_enable\n");
>
> @@ -333,7 +333,7 @@ static int hdmi_display_enable(struct omap_dss_device *dssdev)
> r = hdmi_power_on_full(hdmi);
> if (r) {
> DSSERR("failed to power on device\n");
> - goto err0;
> + goto done;
> }
>
> if (hdmi->audio_configured) {
> @@ -353,12 +353,8 @@ static int hdmi_display_enable(struct omap_dss_device *dssdev)
> hdmi->display_enabled = true;
> spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
>
> +done:
> mutex_unlock(&hdmi->lock);
> - return 0;
> -
> -err0:
> - mutex_unlock(&hdmi->lock);
> - return r;
> }
>
> static void hdmi_display_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> index bd21387ba494..4c0980999576 100644
> --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> @@ -359,8 +359,10 @@ struct omap_dss_device_ops {
> void (*disconnect)(struct omap_dss_device *dssdev,
> struct omap_dss_device *dst);
>
> - int (*enable)(struct omap_dss_device *dssdev);
> + void (*pre_enable)(struct omap_dss_device *dssdev);
> + void (*enable)(struct omap_dss_device *dssdev);
> void (*disable)(struct omap_dss_device *dssdev);
> + void (*post_disable)(struct omap_dss_device *dssdev);
>
> int (*check_timings)(struct omap_dss_device *dssdev,
> struct videomode *vm);
> @@ -489,6 +491,10 @@ int omapdss_device_connect(struct dss_device *dss,
> struct omap_dss_device *dst);
> void omapdss_device_disconnect(struct omap_dss_device *src,
> struct omap_dss_device *dst);
> +void omapdss_device_pre_enable(struct omap_dss_device *dssdev);
> +void omapdss_device_enable(struct omap_dss_device *dssdev);
> +void omapdss_device_disable(struct omap_dss_device *dssdev);
> +void omapdss_device_post_disable(struct omap_dss_device *dssdev);
>
> int omap_dss_get_num_overlay_managers(void);
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c
> index 7de817c69913..20e88c6e3d98 100644
> --- a/drivers/gpu/drm/omapdrm/dss/sdi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/sdi.c
> @@ -129,7 +129,7 @@ static void sdi_config_lcd_manager(struct sdi_device *sdi)
> dss_mgr_set_lcd_config(&sdi->output, &sdi->mgr_config);
> }
>
> -static int sdi_display_enable(struct omap_dss_device *dssdev)
> +static void sdi_display_enable(struct omap_dss_device *dssdev)
> {
> struct sdi_device *sdi = dssdev_to_sdi(dssdev);
> struct dispc_clock_info dispc_cinfo;
> @@ -138,7 +138,7 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
>
> r = regulator_enable(sdi->vdds_sdi_reg);
> if (r)
> - goto err_reg_enable;
> + return;
>
> r = dispc_runtime_get(sdi->dss->dispc);
> if (r)
> @@ -180,7 +180,7 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
> if (r)
> goto err_mgr_enable;
>
> - return 0;
> + return;
>
> err_mgr_enable:
> dss_sdi_disable(sdi->dss);
> @@ -190,8 +190,6 @@ static int sdi_display_enable(struct omap_dss_device *dssdev)
> dispc_runtime_put(sdi->dss->dispc);
> err_get_dispc:
> regulator_disable(sdi->vdds_sdi_reg);
> -err_reg_enable:
> - return r;
> }
>
> static void sdi_display_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c
> index bc9a3d52f34d..dc4133718875 100644
> --- a/drivers/gpu/drm/omapdrm/dss/venc.c
> +++ b/drivers/gpu/drm/omapdrm/dss/venc.c
> @@ -522,25 +522,17 @@ static void venc_power_off(struct venc_device *venc)
> venc_runtime_put(venc);
> }
>
> -static int venc_display_enable(struct omap_dss_device *dssdev)
> +static void venc_display_enable(struct omap_dss_device *dssdev)
> {
> struct venc_device *venc = dssdev_to_venc(dssdev);
> - int r;
>
> DSSDBG("venc_display_enable\n");
>
> mutex_lock(&venc->venc_lock);
>
> - r = venc_power_on(venc);
> - if (r)
> - goto err0;
> -
> - mutex_unlock(&venc->venc_lock);
> + venc_power_on(venc);
>
> - return 0;
> -err0:
> mutex_unlock(&venc->venc_lock);
> - return r;
> }
>
> static void venc_display_disable(struct omap_dss_device *dssdev)
> diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
> index b0c06103b5cd..5765e3ae5b16 100644
> --- a/drivers/gpu/drm/omapdrm/omap_encoder.c
> +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
> @@ -138,33 +138,60 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
> static void omap_encoder_disable(struct drm_encoder *encoder)
> {
> struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
> - struct omap_dss_device *dssdev = omap_encoder->display;
> + struct omap_dss_device *dssdev = omap_encoder->output;
> struct drm_device *dev = encoder->dev;
>
> dev_dbg(dev->dev, "disable(%s)\n", dssdev->name);
>
> - dssdev->ops->disable(dssdev);
> + /*
> + * Disable the chain of external devices, starting at the one at the
> + * internal encoder's output.
> + */
> + omapdss_device_disable(dssdev->next);
>
> - dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
> + /*
> + * Disable the internal encoder. This will disable the DSS output. The
> + * DSI is treated as an exception as DSI pipelines still use the legacy
> + * flow where the pipeline output controls the encoder.
> + */
> + if (dssdev->output_type != OMAP_DISPLAY_TYPE_DSI) {
> + dssdev->ops->disable(dssdev);
> + dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
> + }
> +
> + /*
> + * Perform the post-disable operations on the chain of external devices
> + * to complete the display pipeline disable.
> + */
> + omapdss_device_post_disable(dssdev->next);
> }
>
> static void omap_encoder_enable(struct drm_encoder *encoder)
> {
> struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
> - struct omap_dss_device *dssdev = omap_encoder->display;
> + struct omap_dss_device *dssdev = omap_encoder->output;
> struct drm_device *dev = encoder->dev;
> - int r;
>
> dev_dbg(dev->dev, "enable(%s)\n", dssdev->name);
>
> - r = dssdev->ops->enable(dssdev);
> - if (r) {
> - dev_err(dev->dev, "Failed to enable display '%s': %d\n",
> - dssdev->name, r);
> - return;
> + /* Prepare the chain of external devices for pipeline enable. */
> + omapdss_device_pre_enable(dssdev->next);
> +
> + /*
> + * Enable the internal encoder. This will enable the DSS output. The
> + * DSI is treated as an exception as DSI pipelines still use the legacy
> + * flow where the pipeline output controls the encoder.
> + */
> + if (dssdev->output_type != OMAP_DISPLAY_TYPE_DSI) {
> + dssdev->ops->enable(dssdev);
> + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
> }
>
> - dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
> + /*
> + * Enable the chain of external devices, starting at the one at the
> + * internal encoder's output.
> + */
> + omapdss_device_enable(dssdev->next);
> }
>
> static int omap_encoder_atomic_check(struct drm_encoder *encoder,
> --
> Regards,
>
> Laurent Pinchart
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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