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drm/panel: use mipi_dsi_dcs_write_buffer where possible 

A few of the new panels create a local macro wrapping around
mipi_dsi_dcs_write. At the same time, they don't really care about the
command/payload split.

mipi_dsi_dcs_write does a kmalloc/memcpy/kfree for payload > 7 bytes.
Avoid that all together by using the _buffer function.

Aside:
panel-xinpeng-xpp055c272.c calls its wrapper "generic" although it
should be "dcs". But that for another day/patch.

Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200505160329.2976059-2-emil.l.velikov@gmail.com
This commit is contained in:
Emil Velikov 2020-05-05 17:03:28 +01:00 committed by Sam Ravnborg
parent e192fba23e
commit 1a5c4fe91d
3 changed files with 6 additions and 6 deletions
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4
drivers/gpu/drm/panel/panel-elida-kd35t133.c
View File

@ -52,9 +52,9 @@ static inline struct kd35t133 *panel_to_kd35t133(struct drm_panel *panel)
}
#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \
static const u8 d[] = { seq }; \
static const u8 b[] = { cmd, seq }; \
int ret; \
ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \
ret = mipi_dsi_dcs_write_buffer(dsi, b, ARRAY_SIZE(b)); \
if (ret < 0) \
return ret; \
} while (0)

4
drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
View File

@ -246,9 +246,9 @@ struct ltk050h3146w *panel_to_ltk050h3146w(struct drm_panel *panel)
}
#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \
static const u8 d[] = { seq }; \
static const u8 b[] = { cmd, seq }; \
int ret; \
ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \
ret = mipi_dsi_dcs_write_buffer(dsi, b, ARRAY_SIZE(b)); \
if (ret < 0) \
return ret; \
} while (0)

4
drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
View File

@ -62,9 +62,9 @@ static inline struct xpp055c272 *panel_to_xpp055c272(struct drm_panel *panel)
}
#define dsi_generic_write_seq(dsi, cmd, seq...) do { \
static const u8 d[] = { seq }; \
static const u8 b[] = { cmd, seq }; \
int ret; \
ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \
ret = mipi_dsi_dcs_write_buffer(dsi, b, ARRAY_SIZE(b)); \
if (ret < 0) \
return ret; \
} while (0)