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authorTomi Valkeinen <tomi.valkeinen@nokia.com>2010-02-25 11:38:13 +0200
committerTomi Valkeinen <tomi.valkeinen@nokia.com>2010-02-25 18:28:41 +0200
commit53055aae2048214cbec1f5f7f8846f9dff12b2bc (patch)
tree0cc2387f2cbf7050d994b4f57b5b6c1584e52589
parentddbfeb396eb085e17f5aa830a151d546f16cb868 (diff)
downloadtalos-op-linux-53055aae2048214cbec1f5f7f8846f9dff12b2bc.tar.gz
talos-op-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.h1
-rw-r--r--drivers/video/omap2/dss/dsi.c16
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;
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