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| author | Christophe Branchereau <cbranchereau@gmail.com> | 2022-03-21 14:36:49 +0100 |
|---|---|---|
| committer | Paul Cercueil <paul@crapouillou.net> | 2022-04-05 21:41:35 +0100 |
| commit | aa46154355e1e81ef746470d2e88bdb283508bff (patch) | |
| tree | 22ffb17a459f166b2c96d36f5a61795e59dab82e | |
| parent | 33f2069fb6a9c2d6509accc39521d3f4d6369576 (diff) | |
| download | linux-aa46154355e1e81ef746470d2e88bdb283508bff.tar.gz linux-aa46154355e1e81ef746470d2e88bdb283508bff.tar.bz2 linux-aa46154355e1e81ef746470d2e88bdb283508bff.zip | |
drm/ingenic: Add ingenic_drm_bridge_atomic_enable and disable
ingenic_drm_bridge_atomic_enable allows the CRTC to be enabled after
panels have slept out, and before their display is turned on, solving
a graphical bug on the newvision nv3502c.
Also add ingenic_drm_bridge_atomic_disable to balance it out.
Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Artur Rojek <contact@artur-rojek.eu>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321133651.291592-2-cbranchereau@gmail.com
| -rw-r--r-- | drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index ac52b49bf901..a4f5a323f490 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -226,6 +226,18 @@ static int ingenic_drm_update_pixclk(struct notifier_block *nb, } } +static void ingenic_drm_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct ingenic_drm *priv = drm_device_get_priv(bridge->dev); + + regmap_write(priv->map, JZ_REG_LCD_STATE, 0); + + regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, + JZ_LCD_CTRL_ENABLE | JZ_LCD_CTRL_DISABLE, + JZ_LCD_CTRL_ENABLE); +} + static void ingenic_drm_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state) { @@ -237,28 +249,20 @@ static void ingenic_drm_crtc_atomic_enable(struct drm_crtc *crtc, if (WARN_ON(IS_ERR(priv_state))) return; - regmap_write(priv->map, JZ_REG_LCD_STATE, 0); - /* Set addresses of our DMA descriptor chains */ next_id = priv_state->use_palette ? HWDESC_PALETTE : 0; regmap_write(priv->map, JZ_REG_LCD_DA0, dma_hwdesc_addr(priv, next_id)); regmap_write(priv->map, JZ_REG_LCD_DA1, dma_hwdesc_addr(priv, 1)); - regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, - JZ_LCD_CTRL_ENABLE | JZ_LCD_CTRL_DISABLE, - JZ_LCD_CTRL_ENABLE); - drm_crtc_vblank_on(crtc); } -static void ingenic_drm_crtc_atomic_disable(struct drm_crtc *crtc, - struct drm_atomic_state *state) +static void ingenic_drm_bridge_atomic_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) { - struct ingenic_drm *priv = drm_crtc_get_priv(crtc); + struct ingenic_drm *priv = drm_device_get_priv(bridge->dev); unsigned int var; - drm_crtc_vblank_off(crtc); - regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, JZ_LCD_CTRL_DISABLE, JZ_LCD_CTRL_DISABLE); @@ -267,6 +271,12 @@ static void ingenic_drm_crtc_atomic_disable(struct drm_crtc *crtc, 1000, 0); } +static void ingenic_drm_crtc_atomic_disable(struct drm_crtc *crtc, + struct drm_atomic_state *state) +{ + drm_crtc_vblank_off(crtc); +} + static void ingenic_drm_crtc_update_timings(struct ingenic_drm *priv, struct drm_display_mode *mode) { @@ -968,6 +978,8 @@ static const struct drm_encoder_helper_funcs ingenic_drm_encoder_helper_funcs = static const struct drm_bridge_funcs ingenic_drm_bridge_funcs = { .attach = ingenic_drm_bridge_attach, + .atomic_enable = ingenic_drm_bridge_atomic_enable, + .atomic_disable = ingenic_drm_bridge_atomic_disable, .atomic_check = ingenic_drm_bridge_atomic_check, .atomic_reset = drm_atomic_helper_bridge_reset, .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, |