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Commit 828c48f8 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

OMAP: DSS2: DSI: add helpers for DCS read/write 



Add helper functions for most common DCS read and write operations.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@nokia.com>
parent 4f765023

arch/arm/plat-omap/include/plat/display.h

+3 −0
Original line number Diff line number Diff line
@@ -233,8 +233,11 @@ int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode, 
void dsi_bus_lock(void);

void dsi_bus_unlock(void);

int dsi_vc_dcs_write(int channel, u8 *data, int len);

int dsi_vc_dcs_write_0(int channel, u8 dcs_cmd);

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_set_max_rx_packet_size(int channel, u16 len);

int dsi_vc_send_null(int channel);

int dsi_vc_send_bta_sync(int channel);

drivers/video/omap2/dss/dsi.c

+30 −0
Original line number Diff line number Diff line
@@ -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)

{