openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

OMAP: DSS2: DSI: Add lane override functions 

DSI_DSIPHY_CFG10 register can be used to override DSI lane state. Add
functions to configure and enable the override, and to disable the
override.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2010-07-27 11:11:48 +03:00
parent 179e045369
commit 0a0ee46b1a
1 changed files with 58 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/video/omap2/dss/dsi.c
View File

@ -90,6 +90,7 @@ struct dsi_reg { u16 idx; };
#define DSI_DSIPHY_CFG1 DSI_REG(0x200 + 0x0004)
#define DSI_DSIPHY_CFG2 DSI_REG(0x200 + 0x0008)
#define DSI_DSIPHY_CFG5 DSI_REG(0x200 + 0x0014)
#define DSI_DSIPHY_CFG10 DSI_REG(0x200 + 0x0028)
/* DSI_PLL_CTRL_SCP */
@ -208,6 +209,15 @@ enum dsi_vc_mode {
DSI_VC_MODE_VP,
};
enum dsi_lane {
DSI_CLK_P = 1 << 0,
DSI_CLK_N = 1 << 1,
DSI_DATA1_P = 1 << 2,
DSI_DATA1_N = 1 << 3,
DSI_DATA2_P = 1 << 4,
DSI_DATA2_N = 1 << 5,
};
struct dsi_update_region {
u16 x, y, w, h;
struct omap_dss_device *device;
@ -1863,6 +1873,54 @@ static void dsi_complexio_timings(void)
dsi_write_reg(DSI_DSIPHY_CFG2, r);
}
static void dsi_enable_lane_override(struct omap_dss_device *dssdev,
enum dsi_lane lanes)
{
int clk_lane = dssdev->phy.dsi.clk_lane;
int data1_lane = dssdev->phy.dsi.data1_lane;
int data2_lane = dssdev->phy.dsi.data2_lane;
int clk_pol = dssdev->phy.dsi.clk_pol;
int data1_pol = dssdev->phy.dsi.data1_pol;
int data2_pol = dssdev->phy.dsi.data2_pol;
u32 l = 0;
if (lanes & DSI_CLK_P)
l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 0 : 1));
if (lanes & DSI_CLK_N)
l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 1 : 0));
if (lanes & DSI_DATA1_P)
l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 0 : 1));
if (lanes & DSI_DATA1_N)
l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 1 : 0));
if (lanes & DSI_DATA2_P)
l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 0 : 1));
if (lanes & DSI_DATA2_N)
l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 1 : 0));
/*
* Bits in REGLPTXSCPDAT4TO0DXDY:
* 17: DY0 18: DX0
* 19: DY1 20: DX1
* 21: DY2 22: DX2
*/
/* Set the lane override configuration */
REG_FLD_MOD(DSI_DSIPHY_CFG10, l, 22, 17); /* REGLPTXSCPDAT4TO0DXDY */
/* Enable lane override */
REG_FLD_MOD(DSI_DSIPHY_CFG10, 1, 27, 27); /* ENLPTXSCPDAT */
}
static void dsi_disable_lane_override(void)
{
/* Disable lane override */
REG_FLD_MOD(DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
/* Reset the lane override configuration */
REG_FLD_MOD(DSI_DSIPHY_CFG10, 0, 22, 17); /* REGLPTXSCPDAT4TO0DXDY */
}
static int dsi_complexio_init(struct omap_dss_device *dssdev)
{