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drm/bridge: ite-it6263: Support VESA-24 input format

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Introduce it6263_is_input_bus_fmt_valid() and refactor the
it6263_bridge_atomic_get_input_bus_fmts() function to support VESA-24
format by selecting the LVDS input format based on the LVDS data mapping
and thereby support both JEIDA-24 and VESA-24 input formats.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241205080210.1285385-1-tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
This commit is contained in:
Tommaso Merciai
2024-12-05 09:02:10 +01:00
committed by Dmitry Baryshkov
parent 33f029af89
commit 919b1458cc
1 changed files with 22 additions and 3 deletions
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25
drivers/gpu/drm/bridge/ite-it6263.c
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@@ -48,6 +48,7 @@
#define REG_COL_DEP GENMASK(1, 0)
#define BIT8 FIELD_PREP(REG_COL_DEP, 1)
#define OUT_MAP BIT(4)
#define VESA BIT(4)
#define JEIDA 0
#define REG_DESSC_ENB BIT(6)
#define DMODE BIT(7)
@@ -428,12 +429,30 @@ static inline void it6263_lvds_reset(struct it6263 *it)
fsleep(10000);
}
static inline bool it6263_is_input_bus_fmt_valid(int input_fmt)
{
switch (input_fmt) {
case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
return true;
}
return false;
}
static inline void it6263_lvds_set_interface(struct it6263 *it)
{
u8 fmt;
/* color depth */
regmap_write_bits(it->lvds_regmap, LVDS_REG_2C, REG_COL_DEP, BIT8);
if (it->lvds_data_mapping == MEDIA_BUS_FMT_RGB888_1X7X4_SPWG)
fmt = VESA;
else
fmt = JEIDA;
/* output mapping */
regmap_write_bits(it->lvds_regmap, LVDS_REG_2C, OUT_MAP, JEIDA);
regmap_write_bits(it->lvds_regmap, LVDS_REG_2C, OUT_MAP, fmt);
if (it->lvds_dual_link) {
regmap_write_bits(it->lvds_regmap, LVDS_REG_2C, DMODE, DISO);
@@ -714,14 +733,14 @@ it6263_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
*num_input_fmts = 0;
if (it->lvds_data_mapping != MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA)
if (!it6263_is_input_bus_fmt_valid(it->lvds_data_mapping))
return NULL;
input_fmts = kmalloc(sizeof(*input_fmts), GFP_KERNEL);
if (!input_fmts)
return NULL;
input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA;
input_fmts[0] = it->lvds_data_mapping;
*num_input_fmts = 1;
return input_fmts;