FBDEV: JZ4740: Add framebuffer driver

Add support for the LCD controller on JZ4740 SoCs.

Signed-off-by: Lars-Peter Clausen <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1470/
Signed-off-by: Ralf Baechle <[email protected]>

arch/mips/include/asm/mach-jz4740/jz4740_fb.h

@@ -0,0 +1,67 @@
+/*
+ *  Copyright (C) 2009, Lars-Peter Clausen <[email protected]>
+ *
+ *  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 the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __ASM_MACH_JZ4740_JZ4740_FB_H__
+#define __ASM_MACH_JZ4740_JZ4740_FB_H__
+
+#include <linux/fb.h>
+
+enum jz4740_fb_lcd_type {
+	JZ_LCD_TYPE_GENERIC_16_BIT = 0,
+	JZ_LCD_TYPE_GENERIC_18_BIT = 0 | (1 << 4),
+	JZ_LCD_TYPE_SPECIAL_TFT_1 = 1,
+	JZ_LCD_TYPE_SPECIAL_TFT_2 = 2,
+	JZ_LCD_TYPE_SPECIAL_TFT_3 = 3,
+	JZ_LCD_TYPE_NON_INTERLACED_CCIR656 = 5,
+	JZ_LCD_TYPE_INTERLACED_CCIR656 = 7,
+	JZ_LCD_TYPE_SINGLE_COLOR_STN = 8,
+	JZ_LCD_TYPE_SINGLE_MONOCHROME_STN = 9,
+	JZ_LCD_TYPE_DUAL_COLOR_STN = 10,
+	JZ_LCD_TYPE_DUAL_MONOCHROME_STN = 11,
+	JZ_LCD_TYPE_8BIT_SERIAL = 12,
+};
+
+#define JZ4740_FB_SPECIAL_TFT_CONFIG(start, stop) (((start) << 16) | (stop))
+
+/*
+* width: width of the lcd display in mm
+* height: height of the lcd display in mm
+* num_modes: size of modes
+* modes: list of valid video modes
+* bpp: bits per pixel for the lcd
+* lcd_type: lcd type
+*/
+
+struct jz4740_fb_platform_data {
+	unsigned int width;
+	unsigned int height;
+
+	size_t num_modes;
+	struct fb_videomode *modes;
+
+	unsigned int bpp;
+	enum jz4740_fb_lcd_type lcd_type;
+
+	struct {
+		uint32_t spl;
+		uint32_t cls;
+		uint32_t ps;
+		uint32_t rev;
+	} special_tft_config;
+
+	unsigned pixclk_falling_edge:1;
+	unsigned date_enable_active_low:1;
+};
+
+#endif

drivers/video/Kconfig

@@ -2229,6 +2229,15 @@ config FB_BROADSHEET
 	  and could also have been called by other names when coupled with
 	  a bridge adapter.
 
+config FB_JZ4740
+	tristate "JZ4740 LCD framebuffer support"
+	depends on FB && MACH_JZ4740
+	select FB_SYS_FILLRECT
+	select FB_SYS_COPYAREA
+	select FB_SYS_IMAGEBLIT
+	help
+	  Framebuffer support for the JZ4740 SoC.
+
 source "drivers/video/omap/Kconfig"
 source "drivers/video/omap2/Kconfig"
 

drivers/video/Makefile

@@ -131,6 +131,7 @@ obj-$(CONFIG_FB_CARMINE)          += carminefb.o
 obj-$(CONFIG_FB_MB862XX)	  += mb862xx/
 obj-$(CONFIG_FB_MSM)              += msm/
 obj-$(CONFIG_FB_NUC900)           += nuc900fb.o
+obj-$(CONFIG_FB_JZ4740)		  += jz4740_fb.o
 
 # Platform or fallback drivers go here
 obj-$(CONFIG_FB_UVESA)            += uvesafb.o