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| author | Thierry Reding <treding@nvidia.com> | 2014-08-05 11:18:46 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-11-13 13:56:07 +0100 |
| commit | 5cc0af16fc08cfb749fd0635e5e9187c31826827 (patch) | |
| tree | 685f65db180ffc6e76381038de087fe6f8462670 | |
| parent | 3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a (diff) | |
| download | linux-5cc0af16fc08cfb749fd0635e5e9187c31826827.tar.bz2 | |
drm/dsi: Implement DCS {get,set}_pixel_format commands
Provide small convenience wrappers to query or set the pixel format used
by the interface.
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
| -rw-r--r-- | drivers/gpu/drm/drm_mipi_dsi.c | 46 | ||||
| -rw-r--r-- | include/drm/drm_mipi_dsi.h | 2 |
2 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 80d930191ce7..eb5ed0bcba65 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -628,6 +628,31 @@ int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode) EXPORT_SYMBOL(mipi_dsi_dcs_get_power_mode); /** + * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image + * data used by the interface + * @dsi: DSI peripheral device + * @format: return location for the pixel format + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format) +{ + ssize_t err; + + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_PIXEL_FORMAT, format, + sizeof(*format)); + if (err <= 0) { + if (err == 0) + err = -ENODATA; + + return err; + } + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_get_pixel_format); + +/** * mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the * display module except interface communication * @dsi: DSI peripheral device @@ -745,6 +770,27 @@ int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, } EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_on); +/** + * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image + * data used by the interface + * @dsi: DSI peripheral device + * @format: pixel format + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format) +{ + ssize_t err; + + err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_PIXEL_FORMAT, &format, + sizeof(format)); + if (err < 0) + return err; + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format); + static int mipi_dsi_drv_probe(struct device *dev) { struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver); diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 79588c5a99d4..79927f2d4b6c 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -200,6 +200,7 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, 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); +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format); int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi); @@ -207,6 +208,7 @@ int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, enum mipi_dsi_dcs_tear_mode mode); +int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format); /** * struct mipi_dsi_driver - DSI driver |