usb:gadget:s5p Enable the USB Gadget framework at Exynos4210 (C210 Universal)

This commit enables support for USB Gadgets on the Exynos4210 (C210 Universal)
reference target.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
CC: Remy Bohmer <linux@bohmer.net>

arch/arm/include/asm/arch-exynos/cpu.h

@@ -46,6 +46,7 @@
 #define EXYNOS4_ADC_BASE		0x13910000
 #define EXYNOS4_PWMTIMER_BASE		0x139D0000
 #define EXYNOS4_MODEM_BASE		0x13A00000
+#define EXYNOS4_USBPHY_CONTROL          0x10020704
 
 #ifndef __ASSEMBLY__
 #include <asm/io.h>

board/samsung/universal_c210/universal.c

@@ -28,6 +28,9 @@
 #include <asm/arch/gpio.h>
 #include <asm/arch/mmc.h>
 #include <pmic.h>
+#include <usb/s3c_udc.h>
+#include <asm/arch/cpu.h>
+#include <max8998_pmic.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -253,3 +256,48 @@ int board_mmc_init(bd_t *bis)
 
 }
 #endif
+
+#ifdef CONFIG_USB_GADGET
+static int s5pc210_phy_control(int on)
+{
+	int ret;
+	struct pmic *p = get_pmic();
+
+	if (pmic_probe(p))
+		return -1;
+
+	if (on) {
+		ret |= pmic_set_output(p,
+				       MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
+				       MAX8998_SAFEOUT1, LDO_ON);
+		ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
+				      MAX8998_LDO3, LDO_ON);
+		ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
+				      MAX8998_LDO8, LDO_ON);
+
+	} else {
+		ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
+				      MAX8998_LDO8, LDO_OFF);
+		ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
+				      MAX8998_LDO3, LDO_OFF);
+		ret |= pmic_set_output(p,
+				       MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
+				       MAX8998_SAFEOUT1, LDO_OFF);
+	}
+
+	if (ret) {
+		puts("MAX8998 LDO setting error!\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+struct s3c_plat_otg_data s5pc210_otg_data = {
+	.phy_control = s5pc210_phy_control,
+	.regs_phy = EXYNOS4_USBPHY_BASE,
+	.regs_otg = EXYNOS4_USBOTG_BASE,
+	.usb_phy_ctrl = EXYNOS4_USBPHY_CONTROL,
+	.usb_flags = PHY0_SLEEP,
+};
+#endif

include/configs/s5pc210_universal.h

@@ -262,4 +262,8 @@
 #define CONFIG_PMIC_I2C
 #define CONFIG_PMIC_MAX8998
 
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_S3C_UDC_OTG
+#define CONFIG_USB_GADGET_DUALSPEED
+
 #endif	/* __CONFIG_H */

include/max8998_pmic.h

@@ -76,6 +76,7 @@ enum {
 
 #define MAX8998_LDO3		(1 << 2)
 #define MAX8998_LDO8		(1 << 5)
+#define MAX8998_SAFEOUT1	(1 << 4)
 
 #define MAX8998_I2C_ADDR        (0xCC >> 1)