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drm/msm/dsi: add mode valid callback for dsi_mgr

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Add a mode valid callback for dsi_mgr for checking mode being valid in
case of DSC. For DSC the height and width needs to be multiple of slice,
so we check that here

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/480930/
Link: https://lore.kernel.org/r/20220406094031.1027376-13-vkoul@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
This commit is contained in:
Vinod Koul 2022-04-06 15:10:29 +05:30 committed by Dmitry Baryshkov
parent f2803ee91a
commit 89f1bfc43f
3 changed files with 40 additions and 0 deletions
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2
drivers/gpu/drm/msm/dsi/dsi.h
View File

@ -114,6 +114,8 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
int msm_dsi_host_power_off(struct mipi_dsi_host *host);
int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
const struct drm_display_mode *mode);
enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host,
const struct drm_display_mode *mode);
struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host);
unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host);
struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);

26
drivers/gpu/drm/msm/dsi/dsi_host.c
View File

@ -2554,6 +2554,32 @@ int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
return 0;
}
enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host,
const struct drm_display_mode *mode)
{
struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
struct msm_display_dsc_config *dsc = msm_host->dsc;
int pic_width = mode->hdisplay;
int pic_height = mode->vdisplay;
if (!msm_host->dsc)
return MODE_OK;
if (pic_width % dsc->drm->slice_width) {
pr_err("DSI: pic_width %d has to be multiple of slice %d\n",
pic_width, dsc->drm->slice_width);
return MODE_H_ILLEGAL;
}
if (pic_height % dsc->drm->slice_height) {
pr_err("DSI: pic_height %d has to be multiple of slice %d\n",
pic_height, dsc->drm->slice_height);
return MODE_V_ILLEGAL;
}
return MODE_OK;
}
struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host)
{
return of_drm_find_panel(to_msm_dsi_host(host)->device_node);

12
drivers/gpu/drm/msm/dsi/dsi_manager.c
View File

@ -573,6 +573,17 @@ static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
dsi_mgr_bridge_power_on(bridge);
}
static enum drm_mode_status dsi_mgr_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_info *info,
const struct drm_display_mode *mode)
{
int id = dsi_mgr_bridge_get_id(bridge);
struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
struct mipi_dsi_host *host = msm_dsi->host;
return msm_dsi_host_check_dsc(host, mode);
}
static const struct drm_connector_funcs dsi_mgr_connector_funcs = {
.detect = dsi_mgr_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
@ -593,6 +604,7 @@ static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = {
.disable = dsi_mgr_bridge_disable,
.post_disable = dsi_mgr_bridge_post_disable,
.mode_set = dsi_mgr_bridge_mode_set,
.mode_valid = dsi_mgr_bridge_mode_valid,
};
/* initialize connector when we're connected to a drm_panel */