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| author | Werner Johansson <werner.johansson@sonymobile.com> | 2015-10-30 17:38:26 -0700 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2015-11-24 10:25:14 +0100 |
| commit | 6e8c9e33760d0d0f8450f5ac55d10b085e07e136 (patch) | |
| tree | 72426017bdedd80d9ed6b09246e104a1e56bd7dd /drivers/gpu/drm | |
| parent | 086ceb6b42caca65d726818b56b1e73c63df5b9e (diff) | |
| download | linux-6e8c9e33760d0d0f8450f5ac55d10b085e07e136.tar.bz2 | |
drm/dsi: Add Turn On/Shutdown Peripheral command helpers
The MIPI_DSI_TURN_ON_PERIPHERAL and MIPI_DSI_SHUTDOWN_PERIPHERAL packets
are required for some panels, for example the Panasonic VVX10F034N00.
Signed-off-by: Werner Johansson <werner.johansson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_mipi_dsi.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 2d5ca8eec13a..6e6a9c58d404 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -365,6 +365,44 @@ int mipi_dsi_create_packet(struct mipi_dsi_packet *packet, } EXPORT_SYMBOL(mipi_dsi_create_packet); +/** + * mipi_dsi_shutdown_peripheral() - sends a Shutdown Peripheral command + * @dsi: DSI peripheral device + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_shutdown_peripheral(struct mipi_dsi_device *dsi) +{ + struct mipi_dsi_msg msg = { + .channel = dsi->channel, + .type = MIPI_DSI_SHUTDOWN_PERIPHERAL, + .tx_buf = (u8 [2]) { 0, 0 }, + .tx_len = 2, + }; + + return mipi_dsi_device_transfer(dsi, &msg); +} +EXPORT_SYMBOL(mipi_dsi_shutdown_peripheral); + +/** + * mipi_dsi_turn_on_peripheral() - sends a Turn On Peripheral command + * @dsi: DSI peripheral device + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_turn_on_peripheral(struct mipi_dsi_device *dsi) +{ + struct mipi_dsi_msg msg = { + .channel = dsi->channel, + .type = MIPI_DSI_TURN_ON_PERIPHERAL, + .tx_buf = (u8 [2]) { 0, 0 }, + .tx_len = 2, + }; + + return mipi_dsi_device_transfer(dsi, &msg); +} +EXPORT_SYMBOL(mipi_dsi_turn_on_peripheral); + /* * mipi_dsi_set_maximum_return_packet_size() - specify the maximum size of the * the payload in a long packet transmitted from the peripheral back to the |