diff options
| author | Jayesh Choudhary <j-choudhary@ti.com> | 2024-06-13 14:08:03 +0530 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2024-06-13 17:36:43 +0200 |
| commit | 520dbf5423e112da1c62748cb4349a4f25c63cc4 (patch) | |
| tree | b1c2812489a7fd31b437267f3a9acf85546f1399 /drivers/gpu/drm/bridge | |
| parent | 2755d1f46aa25f65179964bf315d8a16b3540eab (diff) | |
drm/bridge: sii902x: Fix mode_valid hook
Currently, mode_valid is defined only in drm_connector_helper_funcs.
When the bridge is attached with the 'DRM_BRIDGE_ATTACH_NO_CONNECTOR'
flag, the connector is not initialized, and so is the mode_valid
hook under connector helper funcs.
It also returns MODE_OK for all modes without actually checking the
modes.
So move the mode_valid hook to drm_bridge_funcs with proper clock
checks for maximum and minimum pixel clock supported by the bridge.
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240613083805.439337-2-j-choudhary@ti.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/sii902x.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index 2fbeda9025bf..6a6055a4ccf9 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -163,6 +163,14 @@ #define SII902X_AUDIO_PORT_INDEX 3 +/* + * The maximum resolution supported by the HDMI bridge is 1080p@60Hz + * and 1920x1200 requiring a pixel clock of 165MHz and the minimum + * resolution supported is 480p@60Hz requiring a pixel clock of 25MHz + */ +#define SII902X_MIN_PIXEL_CLOCK_KHZ 25000 +#define SII902X_MAX_PIXEL_CLOCK_KHZ 165000 + struct sii902x { struct i2c_client *i2c; struct regmap *regmap; @@ -310,17 +318,8 @@ static int sii902x_get_modes(struct drm_connector *connector) return num; } -static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - /* TODO: check mode */ - - return MODE_OK; -} - static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = { .get_modes = sii902x_get_modes, - .mode_valid = sii902x_mode_valid, }; static void sii902x_bridge_disable(struct drm_bridge *bridge) @@ -504,6 +503,20 @@ static int sii902x_bridge_atomic_check(struct drm_bridge *bridge, return 0; } +static enum drm_mode_status +sii902x_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + if (mode->clock < SII902X_MIN_PIXEL_CLOCK_KHZ) + return MODE_CLOCK_LOW; + + if (mode->clock > SII902X_MAX_PIXEL_CLOCK_KHZ) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + static const struct drm_bridge_funcs sii902x_bridge_funcs = { .attach = sii902x_bridge_attach, .mode_set = sii902x_bridge_mode_set, @@ -516,6 +529,7 @@ static const struct drm_bridge_funcs sii902x_bridge_funcs = { .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_get_input_bus_fmts = sii902x_bridge_atomic_get_input_bus_fmts, .atomic_check = sii902x_bridge_atomic_check, + .mode_valid = sii902x_bridge_mode_valid, }; static int sii902x_mute(struct sii902x *sii902x, bool mute) |