diff options
| author | Brigham Campbell <me@brighamcampbell.com> | 2025-07-31 06:23:42 +0300 |
|---|---|---|
| committer | Douglas Anderson <dianders@chromium.org> | 2025-08-15 01:42:26 +0300 |
| commit | ffc23a204a5f2e763a8cc8a8cfefe0027a6f0ec3 (patch) | |
| tree | 771a763ae2853affd8b12b10307e219354944d37 /include | |
| parent | 0070851095d2954567510777976e40275f81ca1b (diff) | |
| download | linux-ffc23a204a5f2e763a8cc8a8cfefe0027a6f0ec3.tar.xz | |
drm: Add MIPI read_multi func and two write macros
Create mipi_dsi_dcs_read_multi(), which accepts a mipi_dsi_multi_context
struct for improved error handling and cleaner panel driver code.
Create mipi_dsi_dcs_write_var_seq_multi() and
mipi_dsi_generic_write_var_seq_multi() macros which allow MIPI panel
drivers to write non-constant data to display controllers.
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Brigham Campbell <me@brighamcampbell.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250731032343.1258366-3-me@brighamcampbell.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_mipi_dsi.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 16eeb9552064..3aba7b380c8d 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -342,6 +342,8 @@ ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd, const void *data, size_t len); ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, size_t len); +void mipi_dsi_dcs_read_multi(struct mipi_dsi_multi_context *ctx, u8 cmd, + void *data, size_t len); int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode); @@ -404,6 +406,22 @@ void mipi_dsi_dcs_set_tear_off_multi(struct mipi_dsi_multi_context *ctx); } while (0) /** + * mipi_dsi_generic_write_var_seq_multi - transmit non-constant data using a + * generic write packet + * + * This macro will print errors for you and error handling is optimized for + * callers that call this multiple times in a row. + * + * @ctx: Context for multiple DSI transactions + * @seq: buffer containing the payload + */ +#define mipi_dsi_generic_write_var_seq_multi(ctx, seq...) \ + do { \ + const u8 d[] = { seq }; \ + mipi_dsi_generic_write_multi(ctx, d, ARRAY_SIZE(d)); \ + } while (0) + +/** * mipi_dsi_dcs_write_seq_multi - transmit a DCS command with payload * * This macro will print errors for you and error handling is optimized for @@ -420,6 +438,23 @@ void mipi_dsi_dcs_set_tear_off_multi(struct mipi_dsi_multi_context *ctx); } while (0) /** + * mipi_dsi_dcs_write_var_seq_multi - transmit a DCS command with non-constant + * payload + * + * This macro will print errors for you and error handling is optimized for + * callers that call this multiple times in a row. + * + * @ctx: Context for multiple DSI transactions + * @cmd: Command + * @seq: buffer containing data to be transmitted + */ +#define mipi_dsi_dcs_write_var_seq_multi(ctx, cmd, seq...) \ + do { \ + const u8 d[] = { cmd, seq }; \ + mipi_dsi_dcs_write_buffer_multi(ctx, d, ARRAY_SIZE(d)); \ + } while (0) + +/** * mipi_dsi_dual - send the same MIPI DSI command to two interfaces * * This macro will send the specified MIPI DSI command twice, once per each of |