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| author | Thierry Reding <treding@nvidia.com> | 2014-08-05 13:17:06 +0400 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-11-13 15:56:03 +0300 |
| commit | 3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a (patch) | |
| tree | 0197a547bc4e1f44673a7a2707451b9ada1d1126 /drivers/gpu/drm/drm_mipi_dsi.c | |
| parent | 2f16b89737e24b729305dcd4a3573c175615aa4c (diff) | |
| download | linux-3d9a8fcf1c6a9032eb389d3c90323ae980c9d50a.tar.xz | |
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>
Diffstat (limited to 'drivers/gpu/drm/drm_mipi_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/drm_mipi_dsi.c | 25 |
1 files changed, 25 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 |