Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-21 19:41:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/bridge: synopsys: dw-mipi-dsi: Add mode fixup support

Browse Source 
Vendor drivers may need to fixup mode due to pixel clock tree limitation,
so introduce the ->mode_fixup() callcack to struct dw_mipi_dsi_plat_data
and call it at atomic check stage if available.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230821034008.3876938-5-victor.liu@nxp.com
This commit is contained in:
Liu Ying 2023-08-21 11:40:03 +08:00 committed by Robert Foss
parent d5116fb29d
commit 5a67ec8c64
No known key found for this signature in database
GPG Key ID: 3EFD900F76D1D784
2 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
View File

@ -573,9 +573,23 @@ static int dw_mipi_dsi_bridge_atomic_check(struct drm_bridge *bridge,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
const struct dw_mipi_dsi_plat_data *pdata = dsi->plat_data;
bool ret;
bridge_state->input_bus_cfg.flags =
DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE;
if (pdata->mode_fixup) {
ret = pdata->mode_fixup(pdata->priv_data, &crtc_state->mode,
&crtc_state->adjusted_mode);
if (!ret) {
DRM_DEBUG_DRIVER("failed to fixup mode " DRM_MODE_FMT "\n",
DRM_MODE_ARG(&crtc_state->mode));
return -EINVAL;
}
}
return 0;
}

3
include/drm/bridge/dw_mipi_dsi.h
View File

@ -59,6 +59,9 @@ struct dw_mipi_dsi_plat_data {
unsigned long mode_flags,
u32 lanes, u32 format);
bool (*mode_fixup)(void *priv_data, const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
u32 *(*get_input_bus_fmts)(void *priv_data,
struct drm_bridge *bridge,
struct drm_bridge_state *bridge_state,