diff options
| author | Marek Vasut <marex@denx.de> | 2022-03-31 17:05:01 +0200 |
|---|---|---|
| committer | Robert Foss <robert.foss@linaro.org> | 2022-03-31 17:20:37 +0200 |
| commit | 2dff97f2b37ff5439554d3548ce3197620dcb57b (patch) | |
| tree | 6eebedab3a985ea10a2b18dd1da74952bb5eb015 /drivers | |
| parent | c0ff7a649d62105a9308cc3ac36e52a4669d9cb4 (diff) | |
| download | linux-2dff97f2b37ff5439554d3548ce3197620dcb57b.tar.bz2 | |
drm: bridge: icn6211: Add HS/VS/DE polarity handling
The driver currently hard-codes HS/VS polarity to active-low and DE to
active-high, which is not correct for a lot of supported DPI panels.
Add the missing mode flag handling for HS/VS/DE polarity.
Acked-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
To: dri-devel@lists.freedesktop.org
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331150509.9838-4-marex@denx.de
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/bridge/chipone-icn6211.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c index c871a90c0b8f..30db8d1783ce 100644 --- a/drivers/gpu/drm/bridge/chipone-icn6211.c +++ b/drivers/gpu/drm/bridge/chipone-icn6211.c @@ -165,8 +165,16 @@ static void chipone_atomic_enable(struct drm_bridge *bridge, struct drm_bridge_state *old_bridge_state) { struct chipone *icn = bridge_to_chipone(bridge); + struct drm_atomic_state *state = old_bridge_state->base.state; struct drm_display_mode *mode = &icn->mode; + const struct drm_bridge_state *bridge_state; u16 hfp, hbp, hsync; + u32 bus_flags; + u8 pol; + + /* Get the DPI flags from the bridge state. */ + bridge_state = drm_atomic_get_new_bridge_state(state, bridge); + bus_flags = bridge_state->output_bus_cfg.flags; ICN6211_DSI(icn, MIPI_CFG_PW, MIPI_CFG_PW_CONFIG_DSI); @@ -206,7 +214,13 @@ static void chipone_atomic_enable(struct drm_bridge *bridge, ICN6211_DSI(icn, HFP_MIN, hfp & 0xff); ICN6211_DSI(icn, MIPI_PD_CK_LANE, 0xa0); ICN6211_DSI(icn, PLL_CTRL(12), 0xff); - ICN6211_DSI(icn, BIST_POL, BIST_POL_DE_POL); + + /* DPI HS/VS/DE polarity */ + pol = ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? BIST_POL_HSYNC_POL : 0) | + ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? BIST_POL_VSYNC_POL : 0) | + ((bus_flags & DRM_BUS_FLAG_DE_HIGH) ? BIST_POL_DE_POL : 0); + ICN6211_DSI(icn, BIST_POL, pol); + ICN6211_DSI(icn, PLL_CTRL(6), PLL_CTRL_6_MIPI_CLK); ICN6211_DSI(icn, PLL_REF_DIV, 0x71); ICN6211_DSI(icn, PLL_INT(0), 0x2b); |