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| author | Thierry Reding <treding@nvidia.com> | 2014-08-05 11:17:06 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-11-13 13:56:03 +0100 |
| commit | 3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a (patch) | |
| tree | 0197a547bc4e1f44673a7a2707451b9ada1d1126 | |
| parent | 2f16b89737e24b729305dcd4a3573c175615aa4c (diff) | |
| download | linux-stable-3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a.tar.gz linux-stable-3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a.tar.bz2 linux-stable-3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a.zip | |
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 <a.hajda@samsung.com>
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 | 25 | ||||
| -rw-r--r-- | include/drm/drm_mipi_dsi.h | 7 |
2 files changed, 32 insertions, 0 deletions
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 @@ -603,6 +603,31 @@ 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 * @dsi: DSI peripheral device 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); |