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fbdev: sh_mipi_dsi: add lane control support 

SH MIPI DSI can use 0-4 lane

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Kuninori Morimoto 2011-11-08 20:34:43 -08:00 committed by Florian Tobias Schandinat
parent d07a9d2a5e
commit 26c3d7ac21
4 changed files with 12 additions and 1 deletions
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1
arch/arm/mach-shmobile/board-ag5evm.c
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@ -324,6 +324,7 @@ static struct resource mipidsi0_resources[] = {
static struct sh_mipi_dsi_info mipidsi0_info = {
.data_format = MIPI_RGB888,
.lcd_chan = &lcdc0_info.ch[0],
.lane = 2,
.vsynw_offset = 20,
.clksrc = 1,
.flags = SH_MIPI_DSI_HSABM,

1
arch/arm/mach-shmobile/board-ap4evb.c
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@ -580,6 +580,7 @@ static struct resource mipidsi0_resources[] = {
static struct sh_mipi_dsi_info mipidsi0_info = {
.data_format = MIPI_RGB888,
.lcd_chan = &lcdc_info.ch[0],
.lane = 2,
.vsynw_offset = 17,
};

10
drivers/video/sh_mipi_dsi.c
View File

@ -8,6 +8,7 @@
* published by the Free Software Foundation.
*/
#include <linux/bitmap.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/init.h>
@ -153,6 +154,7 @@ static int __init sh_mipi_setup(struct sh_mipi *mipi,
struct sh_mobile_lcdc_chan_cfg *ch = pdata->lcd_chan;
u32 pctype, datatype, pixfmt, linelength, vmctr2 = 0x00e00000;
bool yuv;
u32 tmp;
/*
* Select data format. MIPI DSI is not hot-pluggable, so, we just use
@ -253,6 +255,9 @@ static int __init sh_mipi_setup(struct sh_mipi *mipi,
(!yuv && ch->interface_type != RGB24))
return -EINVAL;
if (!pdata->lane)
return -EINVAL;
/* reset DSI link */
iowrite32(0x00000001, base + SYSCTRL);
/* Hold reset for 100 cycles of the slowest of bus, HS byte and LP clock */
@ -269,7 +274,10 @@ static int __init sh_mipi_setup(struct sh_mipi *mipi,
* ECC check enable
* additionally enable first two lanes
*/
iowrite32(0x00003703, base + SYSCONF);
bitmap_fill((unsigned long *)&tmp, pdata->lane);
tmp |= 0x00003700;
iowrite32(tmp, base + SYSCONF);
/*
* T_wakeup = 0x7000
* T_hs-trail = 3

1
include/video/sh_mipi_dsi.h
View File

@ -35,6 +35,7 @@ struct sh_mobile_lcdc_chan_cfg;
struct sh_mipi_dsi_info {
enum sh_mipi_dsi_data_fmt data_format;
struct sh_mobile_lcdc_chan_cfg *lcd_chan;
int lane;
unsigned long flags;
u32 clksrc;
unsigned int vsynw_offset;