diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-08-05 09:15:15 (GMT) |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-11-13 12:56:01 (GMT) |
| commit | 2f16b89737e24b729305dcd4a3573c175615aa4c (patch) | |
| tree | 166168cf338b3abaf655c15e060c2938f891f509 | |
| parent | 083d573fd013c9996d7462d39b894d360311d750 (diff) | |
| download | linux-2f16b89737e24b729305dcd4a3573c175615aa4c.tar.xz | |
drm/dsi: Implement DCS soft_reset command
Provide a small convenience wrapper that transmits a DCS soft_reset
command.
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 | 18 | ||||
| -rw-r--r-- | include/drm/drm_mipi_dsi.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index d953b7f..b3c28fe 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -585,6 +585,24 @@ int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi) EXPORT_SYMBOL(mipi_dsi_dcs_nop); /** + * mipi_dsi_dcs_soft_reset() - perform a software reset of the display module + * @dsi: DSI peripheral device + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi) +{ + ssize_t err; + + err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SOFT_RESET, NULL, 0); + if (err < 0) + return err; + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_soft_reset); + +/** * 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 cbf4486..de1d94c 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -192,6 +192,7 @@ ssize_t mipi_dsi_dcs_write(struct mipi_dsi_device *dsi, u8 cmd, 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_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); |