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drm/stm: ltdc: move pinctrl to encoder mode set 

The pin control must be set to default as soon as possible to
establish a good video link between tv & bridge hdmi
(encoder mode set is call before encoder enable).

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574850218-13257-1-git-send-email-yannick.fertre@st.com
This commit is contained in:
Yannick Fertré 2019-11-27 11:23:38 +01:00 committed by Benjamin Gaignard
parent 93ccfa9a4e
commit f412af187a
1 changed files with 18 additions and 6 deletions
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24
drivers/gpu/drm/stm/ltdc.c
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@ -437,9 +437,6 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc,
/* Commit shadow registers = update planes at next vblank */
reg_set(ldev->regs, LTDC_SRCR, SRCR_VBR);
/* Enable LTDC */
reg_set(ldev->regs, LTDC_GCR, GCR_LTDCEN);
drm_crtc_vblank_on(crtc);
}
@ -453,9 +450,6 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc,
drm_crtc_vblank_off(crtc);
/* disable LTDC */
reg_clear(ldev->regs, LTDC_GCR, GCR_LTDCEN);
/* disable IRQ */
reg_clear(ldev->regs, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE);
@ -1044,14 +1038,31 @@ static const struct drm_encoder_funcs ltdc_encoder_funcs = {
static void ltdc_encoder_disable(struct drm_encoder *encoder)
{
struct drm_device *ddev = encoder->dev;
struct ltdc_device *ldev = ddev->dev_private;
DRM_DEBUG_DRIVER("\n");
/* Disable LTDC */
reg_clear(ldev->regs, LTDC_GCR, GCR_LTDCEN);
/* Set to sleep state the pinctrl whatever type of encoder */
pinctrl_pm_select_sleep_state(ddev->dev);
}
static void ltdc_encoder_enable(struct drm_encoder *encoder)
{
struct drm_device *ddev = encoder->dev;
struct ltdc_device *ldev = ddev->dev_private;
DRM_DEBUG_DRIVER("\n");
/* Enable LTDC */
reg_set(ldev->regs, LTDC_GCR, GCR_LTDCEN);
}
static void ltdc_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *ddev = encoder->dev;
@ -1069,6 +1080,7 @@ static void ltdc_encoder_enable(struct drm_encoder *encoder)
static const struct drm_encoder_helper_funcs ltdc_encoder_helper_funcs = {
.disable = ltdc_encoder_disable,
.enable = ltdc_encoder_enable,
.mode_set = ltdc_encoder_mode_set,
};
static int ltdc_encoder_init(struct drm_device *ddev, struct drm_bridge *bridge)