Hi,
On Fri, Jan 11, 2019 at 05:51:17AM +0200, Laurent Pinchart wrote:
> Hook up drm_panel support in the omapdrm driver. The change is
> relatively simply as the way has been paved by drm_bridge support
> already. In addition to looking up, attaching to and detaching from the
> panel, we only need to add panel support in the connector .get_modes()
> handler, take connector bus flags (set by the panel) into account, and
> enable/disable the panel in the encoder enable/disable operations
> handlers.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
> ---
Tested-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
-- Sebastian
> drivers/gpu/drm/omapdrm/dss/base.c | 12 ++++---
> drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 +
> drivers/gpu/drm/omapdrm/dss/output.c | 7 +++-
> drivers/gpu/drm/omapdrm/omap_connector.c | 9 ++++++
> drivers/gpu/drm/omapdrm/omap_drv.c | 15 ++++++++-
> drivers/gpu/drm/omapdrm/omap_encoder.c | 41 ++++++++++++++++--------
> 6 files changed, 65 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
> index 09c9f2971aa2..3c088cd2ceab 100644
> --- a/drivers/gpu/drm/omapdrm/dss/base.c
> +++ b/drivers/gpu/drm/omapdrm/dss/base.c
> @@ -157,7 +157,8 @@ struct omap_dss_device *omapdss_device_next_output(struct omap_dss_device *from)
> goto done;
> }
>
> - if (dssdev->id && (dssdev->next || dssdev->bridge))
> + if (dssdev->id &&
> + (dssdev->next || dssdev->bridge || dssdev->panel))
> goto done;
> }
>
> @@ -192,10 +193,11 @@ int omapdss_device_connect(struct dss_device *dss,
> if (!dst) {
> /*
> * The destination is NULL when the source is connected to a
> - * bridge instead of a DSS device. Stop here, we will attach the
> - * bridge later when we will have a DRM encoder.
> + * bridge or panel instead of a DSS device. Stop here, we will
> + * attach the bridge or panel later when we will have a DRM
> + * encoder.
> */
> - return src && src->bridge ? 0 : -EINVAL;
> + return src && (src->bridge || src->panel) ? 0 : -EINVAL;
> }
>
> if (omapdss_device_is_connected(dst))
> @@ -223,7 +225,7 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
> dst ? dev_name(dst->dev) : "NULL");
>
> if (!dst) {
> - WARN_ON(!src->bridge);
> + WARN_ON(!src->bridge && !src->panel);
> return;
> }
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> index f47e9b94288f..0c734d1f89e1 100644
> --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> @@ -411,6 +411,7 @@ struct omap_dss_device {
> struct dss_device *dss;
> struct omap_dss_device *next;
> struct drm_bridge *bridge;
> + struct drm_panel *panel;
>
> struct list_head list;
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
> index 2a53025c2fde..10a9ee5cdc61 100644
> --- a/drivers/gpu/drm/omapdrm/dss/output.c
> +++ b/drivers/gpu/drm/omapdrm/dss/output.c
> @@ -22,6 +22,8 @@
> #include <linux/of.h>
> #include <linux/of_graph.h>
>
> +#include <drm/drm_panel.h>
> +
> #include "dss.h"
> #include "omapdss.h"
>
> @@ -37,6 +39,9 @@ int omapdss_device_init_output(struct omap_dss_device *out)
>
> out->next = omapdss_find_device_by_node(remote_node);
> out->bridge = of_drm_find_bridge(remote_node);
> + out->panel = of_drm_find_panel(remote_node);
> + if (IS_ERR(out->panel))
> + out->panel = NULL;
>
> of_node_put(remote_node);
>
> @@ -47,7 +52,7 @@ int omapdss_device_init_output(struct omap_dss_device *out)
> return -EINVAL;
> }
>
> - return out->next || out->bridge ? 0 : -EPROBE_DEFER;
> + return out->next || out->bridge || out->panel ? 0 : -EPROBE_DEFER;
> }
> EXPORT_SYMBOL(omapdss_device_init_output);
>
> diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
> index f528baa80114..2da16f00cfae 100644
> --- a/drivers/gpu/drm/omapdrm/omap_connector.c
> +++ b/drivers/gpu/drm/omapdrm/omap_connector.c
> @@ -18,6 +18,7 @@
> #include <drm/drm_atomic_helper.h>
> #include <drm/drm_crtc.h>
> #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_panel.h>
>
> #include "omap_drv.h"
>
> @@ -211,6 +212,7 @@ static int omap_connector_get_modes_edid(struct drm_connector *connector,
>
> static int omap_connector_get_modes(struct drm_connector *connector)
> {
> + struct omap_connector *omap_connector = to_omap_connector(connector);
> struct omap_dss_device *dssdev;
>
> DBG("%s", connector->name);
> @@ -233,6 +235,13 @@ static int omap_connector_get_modes(struct drm_connector *connector)
> if (dssdev)
> return dssdev->ops->get_modes(dssdev, connector);
>
> + /*
> + * Otherwise if the display pipeline uses a drm_panel, we delegate the
> + * operation to the panel API.
> + */
> + if (omap_connector->output->panel)
> + return drm_panel_get_modes(omap_connector->output->panel);
> +
> /*
> * We can't retrieve modes, which can happen for instance for a DVI or
> * VGA output with the DDC bus unconnected. The KMS core will add the
> diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
> index 35c4669dc69d..73a21ca3ae47 100644
> --- a/drivers/gpu/drm/omapdrm/omap_drv.c
> +++ b/drivers/gpu/drm/omapdrm/omap_drv.c
> @@ -23,6 +23,7 @@
> #include <drm/drm_atomic_helper.h>
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_fb_helper.h>
> +#include <drm/drm_panel.h>
>
> #include "omap_dmm_tiler.h"
> #include "omap_drv.h"
> @@ -137,6 +138,9 @@ static void omap_disconnect_pipelines(struct drm_device *ddev)
> for (i = 0; i < priv->num_pipes; i++) {
> struct omap_drm_pipeline *pipe = &priv->pipes[i];
>
> + if (pipe->output->panel)
> + drm_panel_detach(pipe->output->panel);
> +
> omapdss_device_disconnect(NULL, pipe->output);
>
> omapdss_device_put(pipe->output);
> @@ -214,13 +218,15 @@ static int omap_display_id(struct omap_dss_device *output)
> display = omapdss_display_get(output);
> node = display->dev->of_node;
> omapdss_device_put(display);
> - } else {
> + } else if (output->bridge) {
> struct drm_bridge *bridge = output->bridge;
>
> while (bridge->next)
> bridge = bridge->next;
>
> node = bridge->of_node;
> + } else if (output->panel) {
> + node = output->panel->dev->of_node;
> }
>
> return node ? of_alias_get_id(node, "display") : -ENODEV;
> @@ -335,6 +341,13 @@ static int omap_modeset_init(struct drm_device *dev)
> return -ENOMEM;
>
> drm_connector_attach_encoder(pipe->connector, encoder);
> +
> + if (pipe->output->panel) {
> + ret = drm_panel_attach(pipe->output->panel,
> + pipe->connector);
> + if (ret < 0)
> + return ret;
> + }
> }
>
> crtc = omap_crtc_init(dev, pipe, priv->planes[i]);
> diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
> index 76f94cc0c0cf..2b21e057b78b 100644
> --- a/drivers/gpu/drm/omapdrm/omap_encoder.c
> +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
> @@ -20,6 +20,7 @@
> #include <drm/drm_crtc.h>
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_edid.h>
> +#include <drm/drm_panel.h>
>
> #include "omap_drv.h"
>
> @@ -79,22 +80,15 @@ static void omap_encoder_update_videomode_flags(struct videomode *vm,
> }
> }
>
> -static void omap_encoder_hdmi_mode_set(struct drm_encoder *encoder,
> +static void omap_encoder_hdmi_mode_set(struct drm_connector *connector,
> + struct drm_encoder *encoder,
> struct drm_display_mode *adjusted_mode)
> {
> - struct drm_device *dev = encoder->dev;
> struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
> struct omap_dss_device *dssdev = omap_encoder->output;
> - struct drm_connector *connector;
> bool hdmi_mode;
>
> - hdmi_mode = false;
> - list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> - if (connector->encoder == encoder) {
> - hdmi_mode = omap_connector_get_hdmi_mode(connector);
> - break;
> - }
> - }
> + hdmi_mode = omap_connector_get_hdmi_mode(connector);
>
> if (dssdev->ops->hdmi.set_hdmi_mode)
> dssdev->ops->hdmi.set_hdmi_mode(dssdev, hdmi_mode);
> @@ -117,8 +111,16 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
> struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
> struct omap_dss_device *output = omap_encoder->output;
> struct omap_dss_device *dssdev;
> + struct drm_device *dev = encoder->dev;
> + struct drm_connector *connector;
> struct drm_bridge *bridge;
> struct videomode vm = { 0 };
> + u32 bus_flags;
> +
> + list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> + if (connector->encoder == encoder)
> + break;
> + }
>
> drm_display_mode_to_videomode(adjusted_mode, &vm);
>
> @@ -135,8 +137,6 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
> omap_encoder_update_videomode_flags(&vm, dssdev->bus_flags);
>
> for (bridge = output->bridge; bridge; bridge = bridge->next) {
> - u32 bus_flags;
> -
> if (!bridge->timings)
> continue;
>
> @@ -144,6 +144,9 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
> omap_encoder_update_videomode_flags(&vm, bus_flags);
> }
>
> + bus_flags = connector->display_info.bus_flags;
> + omap_encoder_update_videomode_flags(&vm, bus_flags);
> +
> /* Set timings for all devices in the display pipeline. */
> dss_mgr_set_timings(output, &vm);
>
> @@ -154,7 +157,7 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
>
> /* Set the HDMI mode and HDMI infoframe if applicable. */
> if (output->type == OMAP_DISPLAY_TYPE_HDMI)
> - omap_encoder_hdmi_mode_set(encoder, adjusted_mode);
> + omap_encoder_hdmi_mode_set(connector, encoder, adjusted_mode);
> }
>
> static void omap_encoder_disable(struct drm_encoder *encoder)
> @@ -165,6 +168,12 @@ static void omap_encoder_disable(struct drm_encoder *encoder)
>
> dev_dbg(dev->dev, "disable(%s)\n", dssdev->name);
>
> + /* Disable the panel if present. */
> + if (dssdev->panel) {
> + drm_panel_disable(dssdev->panel);
> + drm_panel_unprepare(dssdev->panel);
> + }
> +
> /*
> * Disable the chain of external devices, starting at the one at the
> * internal encoder's output.
> @@ -214,6 +223,12 @@ static void omap_encoder_enable(struct drm_encoder *encoder)
> * internal encoder's output.
> */
> omapdss_device_enable(dssdev->next);
> +
> + /* Enable the panel if present. */
> + if (dssdev->panel) {
> + drm_panel_prepare(dssdev->panel);
> + drm_panel_enable(dssdev->panel);
> + }
> }
>
> 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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