Provide a small convenience wrapper that transmits a DCS get_diagnostic_result command.
Signed-off-by: Vinay Simha BN simhavcs@gmail.com --- drivers/gpu/drm/drm_mipi_dsi.c | 25 +++++++++++++++++++++++++ include/drm/drm_mipi_dsi.h | 1 + 2 files changed, 26 insertions(+)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 2e032ea..e49b346 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -816,6 +816,31 @@ int mipi_dsi_dcs_get_display_mode(struct mipi_dsi_device *dsi, u8 *mode) EXPORT_SYMBOL(mipi_dsi_dcs_get_display_mode);
/** + * mipi_dsi_dcs_get_diagnostic_result() - query the display module's diagnostic + * result + * @dsi: DSI peripheral device + * @mode: return location for the display self diagnostic result + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_get_diagnostic_result(struct mipi_dsi_device *dsi, u8 *mode) +{ + ssize_t err; + + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_DIAGNOSTIC_RESULT, mode, + sizeof(*mode)); + if (err <= 0) { + if (err == 0) + err = -ENODATA; + + return err; + } + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_get_diagnostic_result); + +/** * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image * data used by the interface * @dsi: DSI peripheral device diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 48fcd65..61c375b 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -255,6 +255,7 @@ 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_display_mode(struct mipi_dsi_device *dsi, u8 *mode); +int mipi_dsi_dcs_get_diagnostic_result(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);