1 files changed, 154 insertions, 15 deletions

diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 98c5c9e81ee9..d7ada8c7e41f 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -24,6 +24,7 @@
 #include <linux/io.h>
 #include <linux/gpio.h>
 #include <linux/pwm_backlight.h>
+#include <linux/i2c.h>
 #include <video/platform_lcd.h>
 
 #include <linux/mmc/host.h>
@@ -59,6 +60,14 @@
 #include <plat/mci.h>
 #include <plat/ts.h>
 
+#include <sound/uda1380.h>
+
+#define H1940_LATCH             ((void __force __iomem *)0xF8000000)
+
+#define H1940_PA_LATCH          S3C2410_CS2
+
+#define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
+
 static struct map_desc h1940_iodesc[] __initdata = {
         [0] = {
                 .virtual        = (unsigned long)H1940_LATCH,
@@ -100,9 +109,9 @@ static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
 
 /* Board control latch control */
 
-static unsigned int latch_state = H1940_LATCH_DEFAULT;
+static unsigned int latch_state;
 
-void h1940_latch_control(unsigned int clear, unsigned int set)
+static void h1940_latch_control(unsigned int clear, unsigned int set)
 {
         unsigned long flags;
 
@@ -116,7 +125,42 @@ void h1940_latch_control(unsigned int clear, unsigned int set)
         local_irq_restore(flags);
 }
 
-EXPORT_SYMBOL_GPL(h1940_latch_control);
+static inline int h1940_gpiolib_to_latch(int offset)
+{
+        return 1 << (offset + 16);
+}
+
+static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
+                                        unsigned offset, int value)
+{
+        int latch_bit = h1940_gpiolib_to_latch(offset);
+
+        h1940_latch_control(value ? 0 : latch_bit,
+                value ? latch_bit : 0);
+}
+
+static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
+                                        unsigned offset, int value)
+{
+        h1940_gpiolib_latch_set(chip, offset, value);
+        return 0;
+}
+
+static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
+                                        unsigned offset)
+{
+        return (latch_state >> (offset + 16)) & 1;
+}
+
+struct gpio_chip h1940_latch_gpiochip = {
+        .base                   = H1940_LATCH_GPIO(0),
+        .owner                  = THIS_MODULE,
+        .label                  = "H1940_LATCH",
+        .ngpio                  = 16,
+        .direction_output       = h1940_gpiolib_latch_output,
+        .set                    = h1940_gpiolib_latch_set,
+        .get                    = h1940_gpiolib_latch_get,
+};
 
 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 {
@@ -125,10 +169,10 @@ static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
         switch (cmd)
         {
                 case S3C2410_UDC_P_ENABLE :
-                        h1940_latch_control(0, H1940_LATCH_USB_DP);
+                        gpio_set_value(H1940_LATCH_USB_DP, 1);
                         break;
                 case S3C2410_UDC_P_DISABLE :
-                        h1940_latch_control(H1940_LATCH_USB_DP, 0);
+                        gpio_set_value(H1940_LATCH_USB_DP, 0);
                         break;
                 case S3C2410_UDC_P_RESET :
                         break;
@@ -199,10 +243,25 @@ static struct platform_device h1940_device_bluetooth = {
         .id               = -1,
 };
 
+static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
+{
+        switch (power_mode) {
+        case MMC_POWER_OFF:
+                gpio_set_value(H1940_LATCH_SD_POWER, 0);
+                break;
+        case MMC_POWER_UP:
+        case MMC_POWER_ON:
+                gpio_set_value(H1940_LATCH_SD_POWER, 1);
+                break;
+        default:
+                break;
+        };
+}
+
 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
         .gpio_detect   = S3C2410_GPF(5),
         .gpio_wprotect = S3C2410_GPH(8),
-        .set_power     = NULL,
+        .set_power     = h1940_set_mmc_power,
         .ocr_avail     = MMC_VDD_32_33,
 };
 
@@ -213,15 +272,32 @@ static int h1940_backlight_init(struct device *dev)
         gpio_direction_output(S3C2410_GPB(0), 0);
         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
+        gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 
         return 0;
 }
 
+static int h1940_backlight_notify(struct device *dev, int brightness)
+{
+        if (!brightness) {
+                gpio_direction_output(S3C2410_GPB(0), 1);
+                gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
+        } else {
+                gpio_direction_output(S3C2410_GPB(0), 0);
+                s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
+                s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
+                gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
+        }
+        return brightness;
+}
+
 static void h1940_backlight_exit(struct device *dev)
 {
         gpio_direction_output(S3C2410_GPB(0), 1);
+        gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 }
 
+
 static struct platform_pwm_backlight_data backlight_data = {
         .pwm_id         = 0,
         .max_brightness = 100,
@@ -229,6 +305,7 @@ static struct platform_pwm_backlight_data backlight_data = {
         /* tcnt = 0x31 */
         .pwm_period_ns  = 36296,
         .init           = h1940_backlight_init,
+        .notify         = h1940_backlight_notify,
         .exit           = h1940_backlight_exit,
 };
 
@@ -247,19 +324,37 @@ static void h1940_lcd_power_set(struct plat_lcd_data *pd,
         int value;
 
         if (!power) {
-                /* set to 3ec */
-                gpio_direction_output(S3C2410_GPC(0), 0);
+                gpio_set_value(S3C2410_GPC(0), 0);
                 /* wait for 3ac */
                 do {
                         value = gpio_get_value(S3C2410_GPC(6));
                 } while (value);
-                /* set to 38c */
-                gpio_direction_output(S3C2410_GPC(5), 0);
+
+                gpio_set_value(H1940_LATCH_LCD_P2, 0);
+                gpio_set_value(H1940_LATCH_LCD_P3, 0);
+                gpio_set_value(H1940_LATCH_LCD_P4, 0);
+
+                gpio_direction_output(S3C2410_GPC(1), 0);
+                gpio_direction_output(S3C2410_GPC(4), 0);
+
+                gpio_set_value(H1940_LATCH_LCD_P1, 0);
+                gpio_set_value(H1940_LATCH_LCD_P0, 0);
+
+                gpio_set_value(S3C2410_GPC(5), 0);
+
         } else {
-                /* Set to 3ac */
-                gpio_direction_output(S3C2410_GPC(5), 1);
-                /* Set to 3ad */
-                gpio_direction_output(S3C2410_GPC(0), 1);
+                gpio_set_value(H1940_LATCH_LCD_P0, 1);
+                gpio_set_value(H1940_LATCH_LCD_P1, 1);
+
+                s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
+                s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
+
+                gpio_set_value(S3C2410_GPC(5), 1);
+                gpio_set_value(S3C2410_GPC(0), 1);
+
+                gpio_set_value(H1940_LATCH_LCD_P3, 1);
+                gpio_set_value(H1940_LATCH_LCD_P2, 1);
+                gpio_set_value(H1940_LATCH_LCD_P4, 1);
         }
 }
 
@@ -273,12 +368,26 @@ static struct platform_device h1940_lcd_powerdev = {
         .dev.platform_data      = &h1940_lcd_power_data,
 };
 
+static struct uda1380_platform_data uda1380_info = {
+        .gpio_power     = H1940_LATCH_UDA_POWER,
+        .gpio_reset     = S3C2410_GPA(12),
+        .dac_clk        = UDA1380_DAC_CLK_SYSCLK,
+};
+
+static struct i2c_board_info h1940_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("uda1380", 0x1a),
+                .platform_data = &uda1380_info,
+        },
+};
+
 static struct platform_device *h1940_devices[] __initdata = {
         &s3c_device_ohci,
         &s3c_device_lcd,
         &s3c_device_wdt,
         &s3c_device_i2c0,
         &s3c_device_iis,
+        &s3c_device_pcm,
         &s3c_device_usbgadget,
         &h1940_device_leds,
         &h1940_device_bluetooth,
@@ -303,6 +412,10 @@ static void __init h1940_map_io(void)
         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 #endif
         s3c_pm_init();
+
+        /* Add latch gpio chip, set latch initial value */
+        h1940_latch_control(0, 0);
+        WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 }
 
 /* H1940 and RX3715 need to reserve this for suspend */
@@ -340,12 +453,38 @@ static void __init h1940_init(void)
         writel(tmp, S3C2410_UPLLCON);
 
         gpio_request(S3C2410_GPC(0), "LCD power");
+        gpio_request(S3C2410_GPC(1), "LCD power");
+        gpio_request(S3C2410_GPC(4), "LCD power");
         gpio_request(S3C2410_GPC(5), "LCD power");
         gpio_request(S3C2410_GPC(6), "LCD power");
-
+        gpio_request(H1940_LATCH_LCD_P0, "LCD power");
+        gpio_request(H1940_LATCH_LCD_P1, "LCD power");
+        gpio_request(H1940_LATCH_LCD_P2, "LCD power");
+        gpio_request(H1940_LATCH_LCD_P3, "LCD power");
+        gpio_request(H1940_LATCH_LCD_P4, "LCD power");
+        gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
+        gpio_direction_output(S3C2410_GPC(0), 0);
+        gpio_direction_output(S3C2410_GPC(1), 0);
+        gpio_direction_output(S3C2410_GPC(4), 0);
+        gpio_direction_output(S3C2410_GPC(5), 0);
         gpio_direction_input(S3C2410_GPC(6));
+        gpio_direction_output(H1940_LATCH_LCD_P0, 0);
+        gpio_direction_output(H1940_LATCH_LCD_P1, 0);
+        gpio_direction_output(H1940_LATCH_LCD_P2, 0);
+        gpio_direction_output(H1940_LATCH_LCD_P3, 0);
+        gpio_direction_output(H1940_LATCH_LCD_P4, 0);
+        gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
+
+        gpio_request(H1940_LATCH_USB_DP, "USB pullup");
+        gpio_direction_output(H1940_LATCH_USB_DP, 0);
+
+        gpio_request(H1940_LATCH_SD_POWER, "SD power");
+        gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 
         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
+
+        i2c_register_board_info(0, h1940_i2c_devices,
+                ARRAY_SIZE(h1940_i2c_devices));
 }
 
 MACHINE_START(H1940, "IPAQ-H1940")