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| author | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2009-12-16 13:53:15 +0100 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-02-15 14:14:41 +0100 |
| commit | 828c48f8c51ebfc2a00e1a834b0bc9e7fd35060f (patch) | |
| tree | 616907853717f904d68196906ee654b7cadcdf00 /drivers/video/omap2 | |
| parent | OMAP: DSS2: DSI: add dsi_bus_is_locked() (diff) | |
| download | linux-828c48f8c51ebfc2a00e1a834b0bc9e7fd35060f.tar.xz linux-828c48f8c51ebfc2a00e1a834b0bc9e7fd35060f.zip | |
OMAP: DSS2: DSI: add helpers for DCS read/write
Add helper functions for most common DCS read and write operations.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index b38974523d48..e49f063fb615 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -2176,6 +2176,21 @@ int dsi_vc_dcs_write(int channel, u8 *data, int len) } EXPORT_SYMBOL(dsi_vc_dcs_write); +int dsi_vc_dcs_write_0(int channel, u8 dcs_cmd) +{ + return dsi_vc_dcs_write(channel, &dcs_cmd, 1); +} +EXPORT_SYMBOL(dsi_vc_dcs_write_0); + +int dsi_vc_dcs_write_1(int channel, u8 dcs_cmd, u8 param) +{ + u8 buf[2]; + buf[0] = dcs_cmd; + buf[1] = param; + return dsi_vc_dcs_write(channel, buf, 2); +} +EXPORT_SYMBOL(dsi_vc_dcs_write_1); + int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen) { u32 val; @@ -2268,6 +2283,21 @@ int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen) } EXPORT_SYMBOL(dsi_vc_dcs_read); +int dsi_vc_dcs_read_1(int channel, u8 dcs_cmd, u8 *data) +{ + int r; + + r = dsi_vc_dcs_read(channel, dcs_cmd, data, 1); + + if (r < 0) + return r; + + if (r != 1) + return -EIO; + + return 0; +} +EXPORT_SYMBOL(dsi_vc_dcs_read_1); int dsi_vc_set_max_rx_packet_size(int channel, u16 len) { |