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Commit 13f36e9e authored by Steven J. Hill's avatar Steven J. Hill Committed by Florian Tobias Schandinat
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cobalt_lcdfb: LCD panel framebuffer support for SEAD-3 platform. 



Add support for LCD panel on MIPS SEAD-3 development platform.

Signed-off-by: default avatarDouglas Leung <douglas@mips.com>
Signed-off-by: default avatarChris Dearman <chris@mips.com>
Signed-off-by: default avatarSteven J. Hill <sjhill@mips.com>
Signed-off-by: default avatarFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>
parent d313a86d

drivers/video/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -2210,7 +2210,7 @@ config FB_XILINX 


config FB_COBALT

	tristate "Cobalt server LCD frame buffer support"

	depends on FB && MIPS_COBALT

	depends on FB && (MIPS_COBALT || MIPS_SEAD3)



config FB_SH7760

	bool "SH7760/SH7763/SH7720/SH7721 LCDC support"

drivers/video/cobalt_lcdfb.c

+44 −1
Original line number Diff line number Diff line 
/*

 *  Cobalt server LCD frame buffer driver.

 *  Cobalt/SEAD3 LCD frame buffer driver.

 *

 *  Copyright (C) 2008  Yoichi Yuasa <yuasa@linux-mips.org>

 *  Copyright (C) 2012  MIPS Technologies, Inc.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by
@@ -62,6 +63,7 @@ 
#define LCD_CUR_POS(x)		((x) & LCD_CUR_POS_MASK)

#define LCD_TEXT_POS(x)		((x) | LCD_TEXT_MODE)



#ifdef CONFIG_MIPS_COBALT

static inline void lcd_write_control(struct fb_info *info, u8 control)

{

	writel((u32)control << 24, info->screen_base);
@@ -81,6 +83,47 @@ static inline u8 lcd_read_data(struct fb_info *info) 
{

	return readl(info->screen_base + LCD_DATA_REG_OFFSET) >> 24;

}

#else



#define LCD_CTL			0x00

#define LCD_DATA		0x08

#define CPLD_STATUS		0x10

#define CPLD_DATA		0x18



static inline void cpld_wait(struct fb_info *info)

{

	do {

	} while (readl(info->screen_base + CPLD_STATUS) & 1);

}



static inline void lcd_write_control(struct fb_info *info, u8 control)

{

	cpld_wait(info);

	writel(control, info->screen_base + LCD_CTL);

}



static inline u8 lcd_read_control(struct fb_info *info)

{

	cpld_wait(info);

	readl(info->screen_base + LCD_CTL);

	cpld_wait(info);

	return readl(info->screen_base + CPLD_DATA) & 0xff;

}



static inline void lcd_write_data(struct fb_info *info, u8 data)

{

	cpld_wait(info);

	writel(data, info->screen_base + LCD_DATA);

}



static inline u8 lcd_read_data(struct fb_info *info)

{

	cpld_wait(info);

	readl(info->screen_base + LCD_DATA);

	cpld_wait(info);

	return readl(info->screen_base + CPLD_DATA) & 0xff;

}

#endif



static int lcd_busy_wait(struct fb_info *info)

{