Add AVR32 LCD support

This patch adds support for the AVR32 LCD controller.  This patch is
based off the latest u-boot-video.

A quick summary of what's going on:-

Enable LCDC pixel clock
Enable LCDC port pins
Add framebuffer pointer to global_data struct
Allocate framebuffer

To use the new code, update your board config to include something like
this:-

#define CONFIG_LCD			1

#if defined(CONFIG_LCD)
#define CONFIG_CMD_BMP
#define CONFIG_ATMEL_LCD		1
#define LCD_BPP				LCD_COLOR16
#define CONFIG_BMP_16BPP		1
#define CONFIG_FB_ADDR			0x10600000
#define CONFIG_WHITE_ON_BLACK		1
#define CONFIG_VIDEO_BMP_GZIP 		1
#define CONFIG_SYS_VIDEO_LOGO_MAX_SIZE		262144
#define CONFIG_ATMEL_LCD_BGR555		1
#define CONFIG_SYS_CONSOLE_IS_IN_ENV	1
#define CONFIG_SPLASH_SCREEN		1
#endif

The standard U-Boot BMP and Splash-screen features should just work.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
[agust@denx.de: fixed some style issues]
Signed-off-by: Anatolij Gustschin <agust@denx.de>

4 files changed, 17 insertions, 0 deletions

diff --git a/include/asm-avr32/arch-at32ap700x/chip-features.h b/include/asm-avr32/arch-at32ap700x/chip-features.h
index c47107e2a6..40a2476c9a 100644
--- a/include/asm-avr32/arch-at32ap700x/chip-features.h
+++ b/include/asm-avr32/arch-at32ap700x/chip-features.h
@@ -32,4 +32,9 @@
 #define AT32AP700x_CHIP_HAS_MACB
 #endif
 
+/* AP7000 and AP7002 have LCD controller, but AP7001 does not */
+#if defined(CONFIG_AT32AP7000) || defined(CONFIG_AT32AP7002)
+#define AT32AP700x_CHIP_HAS_LCDC
+#endif
+
 #endif /* __ASM_AVR32_ARCH_CHIP_FEATURES_H__ */
diff --git a/include/asm-avr32/arch-at32ap700x/clk.h b/include/asm-avr32/arch-at32ap700x/clk.h
index d83e93b74f..7a0b6559e0 100644
--- a/include/asm-avr32/arch-at32ap700x/clk.h
+++ b/include/asm-avr32/arch-at32ap700x/clk.h
@@ -83,6 +83,12 @@ static inline unsigned long get_spi_clk_rate(unsigned int dev_id)
 	return get_pba_clk_rate();
 }
 #endif
+#ifdef AT32AP700x_CHIP_HAS_LCDC
+static inline unsigned long get_lcdc_clk_rate(unsigned int dev_id)
+{
+	return get_hsb_clk_rate();
+}
+#endif
 
 extern void clk_init(void);
 
diff --git a/include/asm-avr32/arch-at32ap700x/portmux.h b/include/asm-avr32/arch-at32ap700x/portmux.h
index 96fe70d4bd..1ba52e5ddb 100644
--- a/include/asm-avr32/arch-at32ap700x/portmux.h
+++ b/include/asm-avr32/arch-at32ap700x/portmux.h
@@ -85,5 +85,8 @@ void portmux_enable_mmci(unsigned int slot, unsigned long flags,
 void portmux_enable_spi0(unsigned long cs_mask, unsigned long drive_strength);
 void portmux_enable_spi1(unsigned long cs_mask, unsigned long drive_strength);
 #endif
+#ifdef AT32AP700x_CHIP_HAS_LCDC
+void portmux_enable_lcdc(int pin_config);
+#endif
 
 #endif /* __ASM_AVR32_ARCH_PORTMUX_H__ */
diff --git a/include/asm-avr32/global_data.h b/include/asm-avr32/global_data.h
index 97a6c6173c..efbdda9ba4 100644
--- a/include/asm-avr32/global_data.h
+++ b/include/asm-avr32/global_data.h
@@ -42,6 +42,9 @@ typedef	struct	global_data {
 	unsigned long	env_addr;	/* Address of env struct */
 	unsigned long	env_valid;	/* Checksum of env valid? */
 	unsigned long	cpu_hz;		/* cpu core clock frequency */
+#if defined(CONFIG_LCD)
+	void		*fb_base;	/* framebuffer address */
+#endif
 	void		**jt;		/* jump table */
 } gd_t;