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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>
This commit is contained in:
Werner Johansson 2015-10-30 17:38:26 -07:00 committed by Thierry Reding
parent 086ceb6b42
commit 6e8c9e3376
2 changed files with 40 additions and 0 deletions
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38
drivers/gpu/drm/drm_mipi_dsi.c
View File

@ -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

2
include/drm/drm_mipi_dsi.h
View File

@ -191,6 +191,8 @@ static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt)
struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np);
int mipi_dsi_attach(struct mipi_dsi_device *dsi);
int mipi_dsi_detach(struct mipi_dsi_device *dsi);
int mipi_dsi_shutdown_peripheral(struct mipi_dsi_device *dsi);
int mipi_dsi_turn_on_peripheral(struct mipi_dsi_device *dsi);
int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi,
u16 value);