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Commit 5cc0af16 authored by Thierry Reding's avatar Thierry Reding
Browse files

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: default avatarSean Paul <seanpaul@chromium.org>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 3d9a8fcf

drivers/gpu/drm/drm_mipi_dsi.c

+46 −0
Original line number Diff line number Diff line
@@ -627,6 +627,31 @@ 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
@@ -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);

include/drm/drm_mipi_dsi.h

+2 −0
Original line number Diff line number Diff line
@@ -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