[U-Boot] [PATCH 3/3] mx53loco: Add LCD support

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam at freescale.com>

Add support for CLAA07LC0ACW LCD that connects to the mx53loco board.

Configure the board to show the Linux logo on the LCD.

Also increase the size of CONFIG_SYS_MALLOC_LEN variable to take into account 
the framebuffer usage.

Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
 board/freescale/mx53loco/mx53loco.c |   72 +++++++++++++++++++++++++++++++++++
 include/configs/mx53loco.h          |   13 ++++++-
 2 files changed, 84 insertions(+), 1 deletions(-)

diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index dec966d..ad9e419 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -39,6 +39,10 @@
 #include <pmic.h>
 #include <dialog_pmic.h>
 #include <fsl_pmic.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+
+#define MX53LOCO_LCD_POWER		(2 * 32 + 24)	/* GPIO3_24 */
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -402,10 +406,74 @@ static void clock_1GHz(void)
 		printf("CPU:   Switch DDR clock to 400MHz failed\n");
 }
 
+static struct fb_videomode claa_wvga = {
+	.name		= "CLAA07LC0ACW",
+	.refresh	= 57,
+	.xres		= 800,
+	.yres		= 480,
+	.pixclock	= 37037,
+	.left_margin	= 40,
+	.right_margin	= 60,
+	.upper_margin	= 10,
+	.lower_margin	= 10,
+	.hsync_len	= 20,
+	.vsync_len	= 10,
+	.sync		= 0,
+	.vmode		= FB_VMODE_NONINTERLACED
+};
+
+void lcd_iomux(void)
+{
+	mxc_request_iomux(MX53_PIN_DI0_DISP_CLK, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DI0_PIN15, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DI0_PIN2, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DI0_PIN3, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT0, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT1, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT2, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT3, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT4, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT5, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT6, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT7, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT8, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT9, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT10, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT11, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT12, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT13, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT14, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT15, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT16, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT17, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT18, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT19, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT20, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT21, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT22, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX53_PIN_DISP0_DAT23, IOMUX_CONFIG_ALT0);
+
+	/* Turn on GPIO backlight */
+	mxc_request_iomux(MX53_PIN_EIM_D24, IOMUX_CONFIG_ALT1);
+	gpio_direction_output(MX53LOCO_LCD_POWER, 1);
+
+	/* Turn on display contrast */
+	mxc_request_iomux(MX53_PIN_GPIO_1, IOMUX_CONFIG_ALT1);
+	gpio_direction_output(IOMUX_TO_GPIO(MX53_PIN_GPIO_1), 1);
+}
+
+void lcd_enable(void)
+{
+	int ret = ipuv3_fb_init(&claa_wvga, 0, IPU_PIX_FMT_RGB565);
+	if (ret)
+		printf("LCD cannot be configured: %d\n", ret);
+}
+
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
 	setup_iomux_fec();
+	lcd_iomux();
 
 	return 0;
 }
@@ -432,6 +500,8 @@ int board_late_init(void)
 		clock_1GHz();
 	print_cpuinfo();
 
+	setenv("stdout", "serial");
+
 	return 0;
 }
 #endif
@@ -441,6 +511,8 @@ int board_init(void)
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 
 	mxc_set_sata_internal_clock();
+
+	lcd_enable();
 
 	return 0;
 }
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index eab0e27..99daafb 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -38,7 +38,7 @@
 #define CONFIG_INITRD_TAG
 
 /* Size of malloc() pool */
-#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 2 * 1024 * 1024)
+#define CONFIG_SYS_MALLOC_LEN		(10 * 1024 * 1024)
 
 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_BOARD_LATE_INIT
@@ -220,4 +220,15 @@
 	#define CONFIG_LIBATA
 #endif
 
+/* Framebuffer and LCD */
+#define CONFIG_PREBOOT
+#define CONFIG_VIDEO
+#define CONFIG_VIDEO_MX5
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_VIDEO_BMP_RLE8
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_BMP_16BPP
+#define CONFIG_VIDEO_LOGO
+
 #endif				/* __CONFIG_H */
-- 
1.7.1