diff options
| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2021-10-16 15:18:40 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-10-18 14:28:30 -0700 |
| commit | 4b296d15b355a866504e60af85ebb72b47873206 (patch) | |
| tree | cf38cc0a12b69c5a39dbda0279983fd9b80649f9 /drivers/gpu/drm/msm/dp/dp_parser.c | |
| parent | 269e92d84cd223b3bc32b752a0bcf639c2cb3bd9 (diff) | |
drm/msm/dp: Allow attaching a drm_panel
eDP panels might need some power sequencing and backlight management,
so make it possible to associate a drm_panel with an eDP instance and
prepare and enable the panel accordingly.
Now that we know which hardware instance is DP and which is eDP,
parser->parse() is passed the connector_type and the parser is limited
to only search for a panel in the eDP case.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20211016221843.2167329-5-bjorn.andersson@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_parser.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_parser.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c index a431b4e7f385..81dbcc86d08a 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.c +++ b/drivers/gpu/drm/msm/dp/dp_parser.c @@ -6,6 +6,7 @@ #include <linux/of_gpio.h> #include <linux/phy/phy.h> +#include <drm/drm_of.h> #include <drm/drm_print.h> #include "dp_parser.h" @@ -263,7 +264,28 @@ static int dp_parser_clock(struct dp_parser *parser) return 0; } -static int dp_parser_parse(struct dp_parser *parser) +static int dp_parser_find_panel(struct dp_parser *parser) +{ + struct device *dev = &parser->pdev->dev; + struct drm_panel *panel; + int rc; + + rc = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); + if (rc) { + DRM_ERROR("failed to acquire DRM panel: %d\n", rc); + return rc; + } + + parser->panel_bridge = devm_drm_panel_bridge_add(dev, panel); + if (IS_ERR(parser->panel_bridge)) { + DRM_ERROR("failed to create panel bridge\n"); + return PTR_ERR(parser->panel_bridge); + } + + return 0; +} + +static int dp_parser_parse(struct dp_parser *parser, int connector_type) { int rc = 0; @@ -284,6 +306,12 @@ static int dp_parser_parse(struct dp_parser *parser) if (rc) return rc; + if (connector_type == DRM_MODE_CONNECTOR_eDP) { + rc = dp_parser_find_panel(parser); + if (rc) + return rc; + } + /* Map the corresponding regulator information according to * version. Currently, since we only have one supported platform, * mapping the regulator directly. |