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| author | Patrik Jakobsson <patrik.r.jakobsson@gmail.com> | 2022-06-01 11:23:11 +0200 |
|---|---|---|
| committer | Patrik Jakobsson <patrik.r.jakobsson@gmail.com> | 2022-06-02 10:06:51 +0200 |
| commit | e9ca4e9ea6e208feae82f72607818ac8e15115f4 (patch) | |
| tree | e68f25e26e3a6b66076bf6729dc2943dbbe9e696 | |
| parent | a57ebfc0b4da16a3f36bfebb158198aab3e340f8 (diff) | |
| download | linux-stable-e9ca4e9ea6e208feae82f72607818ac8e15115f4.tar.gz linux-stable-e9ca4e9ea6e208feae82f72607818ac8e15115f4.tar.bz2 linux-stable-e9ca4e9ea6e208feae82f72607818ac8e15115f4.zip | |
drm/gma500: Read EDID from the correct i2c adapter
Someone made the mistake to try reading EDID from the backlight i2c
adapter. This has been wrong for a very long time but since we read out
the modes correctly on init and don't hotplug lvds it has been working
anyway. Correct this by using connector->ddc instead of
encoder->i2c_bus. Both PSB and CDV are affected but this bug.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220601092311.22648-9-patrik.r.jakobsson@gmail.com
| -rw-r--r-- | drivers/gpu/drm/gma500/cdv_intel_lvds.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/gma500/psb_intel_lvds.c | 4 |
2 files changed, 2 insertions, 5 deletions
diff --git a/drivers/gpu/drm/gma500/cdv_intel_lvds.c b/drivers/gpu/drm/gma500/cdv_intel_lvds.c index 846ce1546030..be6efcaaa3b3 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_lvds.c +++ b/drivers/gpu/drm/gma500/cdv_intel_lvds.c @@ -298,11 +298,10 @@ static int cdv_intel_lvds_get_modes(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct drm_psb_private *dev_priv = to_drm_psb_private(dev); - struct gma_encoder *gma_encoder = gma_attached_encoder(connector); struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; int ret; - ret = psb_intel_ddc_get_modes(connector, &gma_encoder->i2c_bus->base); + ret = psb_intel_ddc_get_modes(connector, connector->ddc); if (ret) return ret; diff --git a/drivers/gpu/drm/gma500/psb_intel_lvds.c b/drivers/gpu/drm/gma500/psb_intel_lvds.c index 1121bb155c5e..7ee6c8ce103b 100644 --- a/drivers/gpu/drm/gma500/psb_intel_lvds.c +++ b/drivers/gpu/drm/gma500/psb_intel_lvds.c @@ -491,12 +491,10 @@ static int psb_intel_lvds_get_modes(struct drm_connector *connector) struct drm_device *dev = connector->dev; struct drm_psb_private *dev_priv = to_drm_psb_private(dev); struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; - struct gma_encoder *gma_encoder = gma_attached_encoder(connector); - struct psb_intel_lvds_priv *lvds_priv = gma_encoder->dev_priv; int ret = 0; if (!IS_MRST(dev)) - ret = psb_intel_ddc_get_modes(connector, &lvds_priv->i2c_bus->base); + ret = psb_intel_ddc_get_modes(connector, connector->ddc); if (ret) return ret; |