mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-04 08:08:54 +00:00
Code Issues Releases Wiki Activity

drm/bridge: tc358768: Add atomic_get_input_bus_fmts() implementation

Browse source 
Add atomic_get_input_bus_fmts() implementation, tc358768 has a parallel
RGB input interface with the actual bus format depending on the amount
of parallel input data lines.

Without this change when the tc358768 is used with less than 24bit the
color mapping is completely wrong.

Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230330095941.428122-7-francesco@dolcini.it
This commit is contained in:
Francesco Dolcini 2023-03-30 11:59:41 +02:00 committed by Robert Foss
parent b2751a4c5b
commit cec5ccef85
No known key found for this signature in database
GPG key ID: 3EFD900F76D1D784
1 changed files with 44 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
drivers/gpu/drm/bridge/tc358768.c
View file

@ -9,6 +9,7 @@
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/media-bus-format.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@ -913,6 +914,44 @@ static void tc358768_bridge_enable(struct drm_bridge *bridge)
}
}
#define MAX_INPUT_SEL_FORMATS 1
static u32 *
tc358768_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
struct drm_bridge_state *bridge_state,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state,
u32 output_fmt,
unsigned int *num_input_fmts)
{
struct tc358768_priv *priv = bridge_to_tc358768(bridge);
u32 *input_fmts;
*num_input_fmts = 0;
input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
GFP_KERNEL);
if (!input_fmts)
return NULL;
switch (priv->pd_lines) {
case 16:
input_fmts[0] = MEDIA_BUS_FMT_RGB565_1X16;
break;
case 18:
input_fmts[0] = MEDIA_BUS_FMT_RGB666_1X18;
break;
default:
case 24:
input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
break;
};
*num_input_fmts = MAX_INPUT_SEL_FORMATS;
return input_fmts;
}
static const struct drm_bridge_funcs tc358768_bridge_funcs = {
.attach = tc358768_bridge_attach,
.mode_valid = tc358768_bridge_mode_valid,
@ -920,6 +959,11 @@ static const struct drm_bridge_funcs tc358768_bridge_funcs = {
.enable = tc358768_bridge_enable,
.disable = tc358768_bridge_disable,
.post_disable = tc358768_bridge_post_disable,
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_get_input_bus_fmts = tc358768_atomic_get_input_bus_fmts,
};
static const struct drm_bridge_timings default_tc358768_timings = {