From: Thierry Reding Date: Tue, 5 Aug 2014 09:17:06 +0000 (+0200) Subject: drm/dsi: Implement DCS get_power_mode command X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/dsi: Implement DCS get_power_mode command Provide a small convenience wrapper that transmits a DCS get_power_mode command. A set of bitmasks for the mode bits is also provided. Acked-by: Andrzej Hajda Reviewed-by: Sean Paul Signed-off-by: Thierry Reding --- diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index b3c28feff650..80d930191ce7 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -602,6 +602,31 @@ int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi) } EXPORT_SYMBOL(mipi_dsi_dcs_soft_reset); +/** + * mipi_dsi_dcs_get_power_mode() - query the display module's current power + * mode + * @dsi: DSI peripheral device + * @mode: return location for the current power mode + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode) +{ + ssize_t err; + + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_POWER_MODE, mode, + sizeof(*mode)); + if (err <= 0) { + if (err == 0) + err = -ENODATA; + + return err; + } + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_get_power_mode); + /** * mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the * display module except interface communication diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index de1d94cba217..79588c5a99d4 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -185,6 +185,12 @@ enum mipi_dsi_dcs_tear_mode { MIPI_DSI_DCS_TEAR_MODE_VHBLANK, }; +#define MIPI_DSI_DCS_POWER_MODE_DISPLAY (1 << 2) +#define MIPI_DSI_DCS_POWER_MODE_NORMAL (1 << 3) +#define MIPI_DSI_DCS_POWER_MODE_SLEEP (1 << 4) +#define MIPI_DSI_DCS_POWER_MODE_PARTIAL (1 << 5) +#define MIPI_DSI_DCS_POWER_MODE_IDLE (1 << 6) + ssize_t mipi_dsi_dcs_write_buffer(struct mipi_dsi_device *dsi, const void *data, size_t len); ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd, @@ -193,6 +199,7 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, 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); 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);