ARM: S5P6440: Add LCD-LTE480 and enable Framebuffer support

This patch:
	-- Adds platform device support for LCD-LTE480.
	-- Adds platform data for FB with win_mode and default_bpp.
	-- Enables FB device support and platform-lcd support.
	-- Adds SPCON settings for LCD.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 80 insertions, 0 deletions

diff --git a/arch/arm/mach-s5p64x0/Kconfig b/arch/arm/mach-s5p64x0/Kconfig
index 92b06024ee9f..e51a5f18b1ed 100644
--- a/arch/arm/mach-s5p64x0/Kconfig
+++ b/arch/arm/mach-s5p64x0/Kconfig
@@ -37,6 +37,7 @@ config S5P64X0_SETUP_I2C1
 config MACH_SMDK6440
         bool "SMDK6440"
         select CPU_S5P6440
+        select S3C_DEV_FB
         select S3C_DEV_I2C1
         select S3C_DEV_RTC
         select S3C_DEV_WDT
@@ -45,6 +46,7 @@ config MACH_SMDK6440
         select SAMSUNG_DEV_BACKLIGHT
         select SAMSUNG_DEV_PWM
         select SAMSUNG_DEV_TS
+        select S5P64X0_SETUP_FB_24BPP
         select S5P64X0_SETUP_I2C1
         help
           Machine support for the Samsung SMDK6440
diff --git a/arch/arm/mach-s5p64x0/include/mach/regs-gpio.h b/arch/arm/mach-s5p64x0/include/mach/regs-gpio.h
index 6ce254729f3b..88269ec70a38 100644
--- a/arch/arm/mach-s5p64x0/include/mach/regs-gpio.h
+++ b/arch/arm/mach-s5p64x0/include/mach/regs-gpio.h
@@ -34,6 +34,10 @@
 #define S5P6450_GPQ_BASE                (S5P_VA_GPIO + 0x0180)
 #define S5P6450_GPS_BASE                (S5P_VA_GPIO + 0x0300)
 
+#define S5P64X0_SPCON0                  (S5P_VA_GPIO + 0x1A0)
+#define S5P64X0_SPCON0_LCD_SEL_MASK     (0x3 << 0)
+#define S5P64X0_SPCON0_LCD_SEL_RGB      (0x1 << 0)
+
 /* External interrupt control registers for group0 */
 
 #define EINT0CON0_OFFSET                (0x900)
diff --git a/arch/arm/mach-s5p64x0/mach-smdk6440.c b/arch/arm/mach-s5p64x0/mach-smdk6440.c
index 346f8dfa6f35..39026e9d5f3c 100644
--- a/arch/arm/mach-s5p64x0/mach-smdk6440.c
+++ b/arch/arm/mach-s5p64x0/mach-smdk6440.c
@@ -23,6 +23,9 @@
 #include <linux/clk.h>
 #include <linux/gpio.h>
 #include <linux/pwm_backlight.h>
+#include <linux/fb.h>
+
+#include <video/platform_lcd.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -47,6 +50,8 @@
 #include <plat/ts.h>
 #include <plat/s5p-time.h>
 #include <plat/backlight.h>
+#include <plat/fb.h>
+#include <plat/regs-fb.h>
 
 #define SMDK6440_UCON_DEFAULT   (S3C2410_UCON_TXILEVEL |        \
                                 S3C2410_UCON_RXILEVEL |         \
@@ -92,6 +97,59 @@ static struct s3c2410_uartcfg smdk6440_uartcfgs[] __initdata = {
         },
 };
 
+/* Frame Buffer */
+static struct s3c_fb_pd_win smdk6440_fb_win0 = {
+        .win_mode = {
+                .left_margin    = 8,
+                .right_margin   = 13,
+                .upper_margin   = 7,
+                .lower_margin   = 5,
+                .hsync_len      = 3,
+                .vsync_len      = 1,
+                .xres           = 800,
+                .yres           = 480,
+        },
+        .max_bpp        = 32,
+        .default_bpp    = 24,
+};
+
+static struct s3c_fb_platdata smdk6440_lcd_pdata __initdata = {
+        .win[0]         = &smdk6440_fb_win0,
+        .vidcon0        = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
+        .vidcon1        = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
+        .setup_gpio     = s5p64x0_fb_gpio_setup_24bpp,
+};
+
+/* LCD power controller */
+static void smdk6440_lte480_reset_power(struct plat_lcd_data *pd,
+                                         unsigned int power)
+{
+        int err;
+
+        if (power) {
+                err = gpio_request(S5P6440_GPN(5), "GPN");
+                if (err) {
+                        printk(KERN_ERR "failed to request GPN for lcd reset\n");
+                        return;
+                }
+
+                gpio_direction_output(S5P6440_GPN(5), 1);
+                gpio_set_value(S5P6440_GPN(5), 0);
+                gpio_set_value(S5P6440_GPN(5), 1);
+                gpio_free(S5P6440_GPN(5));
+        }
+}
+
+static struct plat_lcd_data smdk6440_lcd_power_data = {
+        .set_power      = smdk6440_lte480_reset_power,
+};
+
+static struct platform_device smdk6440_lcd_lte480wv = {
+        .name                   = "platform-lcd",
+        .dev.parent             = &s3c_device_fb.dev,
+        .dev.platform_data      = &smdk6440_lcd_power_data,
+};
+
 static struct platform_device *smdk6440_devices[] __initdata = {
         &s3c_device_adc,
         &s3c_device_rtc,
@@ -101,6 +159,8 @@ static struct platform_device *smdk6440_devices[] __initdata = {
         &s3c_device_wdt,
         &samsung_asoc_dma,
         &s5p6440_device_iis,
+        &s3c_device_fb,
+        &smdk6440_lcd_lte480wv,
 };
 
 static struct s3c2410_platform_i2c s5p6440_i2c0_data __initdata = {
@@ -153,6 +213,17 @@ static void __init smdk6440_map_io(void)
         s5p_set_timer_source(S5P_PWM3, S5P_PWM4);
 }
 
+static void s5p6440_set_lcd_interface(void)
+{
+        unsigned int cfg;
+
+        /* select TFT LCD type (RGB I/F) */
+        cfg = __raw_readl(S5P64X0_SPCON0);
+        cfg &= ~S5P64X0_SPCON0_LCD_SEL_MASK;
+        cfg |= S5P64X0_SPCON0_LCD_SEL_RGB;
+        __raw_writel(cfg, S5P64X0_SPCON0);
+}
+
 static void __init smdk6440_machine_init(void)
 {
         s3c24xx_ts_set_platdata(&s3c_ts_platform);
@@ -166,6 +237,9 @@ static void __init smdk6440_machine_init(void)
 
         samsung_bl_set(&smdk6440_bl_gpio_info, &smdk6440_bl_data);
 
+        s5p6440_set_lcd_interface();
+        s3c_fb_set_platdata(&smdk6440_lcd_pdata);
+
         platform_add_devices(smdk6440_devices, ARRAY_SIZE(smdk6440_devices));
 }