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drm: mxsfb: Obtain bus flags from bridge state

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In case the MXSFB is connected to a bridge, attempt to obtain bus flags
from that bridge state too. The bus flags may specify e.g. the DE signal
polarity.

Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220417021011.337066-1-marex@denx.de
This commit is contained in:
Marek Vasut 2022-04-17 04:10:11 +02:00
parent 3604f1e531
commit 57e6f0562c
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/gpu/drm/mxsfb/mxsfb_kms.c
View file

@ -275,6 +275,7 @@ static int mxsfb_reset_block(struct mxsfb_drm_private *mxsfb)
}
static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
struct drm_bridge_state *bridge_state,
const u32 bus_format)
{
struct drm_device *drm = mxsfb->crtc.dev;
@ -284,6 +285,8 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
if (mxsfb->bridge && mxsfb->bridge->timings)
bus_flags = mxsfb->bridge->timings->input_bus_flags;
else if (bridge_state)
bus_flags = bridge_state->input_bus_cfg.flags;
DRM_DEV_DEBUG_DRIVER(drm->dev, "Pixel clock: %dkHz (actual: %dkHz)\n",
m->crtc_clock,
@ -345,7 +348,7 @@ static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(crtc->dev);
struct drm_plane_state *new_pstate = drm_atomic_get_new_plane_state(state,
crtc->primary);
struct drm_bridge_state *bridge_state;
struct drm_bridge_state *bridge_state = NULL;
struct drm_device *drm = mxsfb->drm;
u32 bus_format = 0;
dma_addr_t paddr;
@ -381,7 +384,7 @@ static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
if (!bus_format)
bus_format = MEDIA_BUS_FMT_RGB888_1X24;
mxsfb_crtc_mode_set_nofb(mxsfb, bus_format);
mxsfb_crtc_mode_set_nofb(mxsfb, bridge_state, bus_format);
/* Write cur_buf as well to avoid an initial corrupt frame */
paddr = drm_fb_cma_get_gem_addr(new_pstate->fb, new_pstate, 0);