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| author | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-02-25 10:38:13 +0100 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-02-25 17:28:41 +0100 |
| commit | 53055aae2048214cbec1f5f7f8846f9dff12b2bc (patch) | |
| tree | 0cc2387f2cbf7050d994b4f57b5b6c1584e52589 | |
| parent | OMAP: DSS2: OMAPFB: Remove FB_OMAP2_FORCE_AUTO_UPDATE (diff) | |
| download | linux-53055aae2048214cbec1f5f7f8846f9dff12b2bc.tar.xz linux-53055aae2048214cbec1f5f7f8846f9dff12b2bc.zip | |
OMAP: DSS2: DSI: add dsi_vc_dcs_read_2() helper
Add dsi_vc_dcs_read_2() helper function to read two bytes from the DSI
peripheral.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| -rw-r--r-- | arch/arm/plat-omap/include/plat/display.h | 1 | ||||
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h index 23bc94fc51fa..1c529ce9dc11 100644 --- a/arch/arm/plat-omap/include/plat/display.h +++ b/arch/arm/plat-omap/include/plat/display.h @@ -238,6 +238,7 @@ int dsi_vc_dcs_write_1(int channel, u8 dcs_cmd, u8 param); int dsi_vc_dcs_write_nosync(int channel, u8 *data, int len); int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen); int dsi_vc_dcs_read_1(int channel, u8 dcs_cmd, u8 *data); +int dsi_vc_dcs_read_2(int channel, u8 dcs_cmd, u16 *data); int dsi_vc_set_max_rx_packet_size(int channel, u16 len); int dsi_vc_send_null(int channel); int dsi_vc_send_bta_sync(int channel); diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 73bdb04e6814..a9820206ca1e 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -2212,6 +2212,22 @@ int dsi_vc_dcs_read_1(int channel, u8 dcs_cmd, u8 *data) } EXPORT_SYMBOL(dsi_vc_dcs_read_1); +int dsi_vc_dcs_read_2(int channel, u8 dcs_cmd, u16 *data) +{ + int r; + + r = dsi_vc_dcs_read(channel, dcs_cmd, (u8 *)data, 2); + + if (r < 0) + return r; + + if (r != 2) + return -EIO; + + return 0; +} +EXPORT_SYMBOL(dsi_vc_dcs_read_2); + int dsi_vc_set_max_rx_packet_size(int channel, u16 len) { int r; |