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drm/mipi-dsi: Add a mipi_dsi_dcs_write_seq() macro

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Many panel drivers define dsi_dcs_write_seq() and dsi_generic_write_seq()
macros to send DCS commands and generic write packets respectively, with
the payload specified as a list of parameters instead of using arrays.

There's already a macro for the former, introduced by commit 2a9e9daf75
("drm/mipi-dsi: Introduce mipi_dsi_dcs_write_seq macro") so drivers can be
changed to use that. But there isn't one yet for the latter, let's add it.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230102202542.3494677-2-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas 2023-01-02 21:25:42 +01:00
parent 51d3c0e7dc
commit a9015ce593
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1 changed files with 18 additions and 0 deletions
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18
include/drm/drm_mipi_dsi.h
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@ -297,6 +297,24 @@ int mipi_dsi_dcs_set_display_brightness(struct mipi_dsi_device *dsi,
int mipi_dsi_dcs_get_display_brightness(struct mipi_dsi_device *dsi,
u16 *brightness);
/**
* mipi_dsi_generic_write_seq - transmit data using a generic write packet
* @dsi: DSI peripheral device
* @seq: buffer containing the payload
*/
#define mipi_dsi_generic_write_seq(dsi, seq...) \
do { \
static const u8 d[] = { seq }; \
struct device *dev = &dsi->dev; \
int ret; \
ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
if (ret < 0) { \
dev_err_ratelimited(dev, "transmit data failed: %d\n", \
ret); \
return ret; \
} \
} while (0)
/**
* mipi_dsi_dcs_write_seq - transmit a DCS command with payload
* @dsi: DSI peripheral device