i9300: USB support

Author: fourkbomb

board/samsung/i9300/i9300.c

@@ -4,10 +4,16 @@
  *
  * SPDX-License-Identifier: GPL-2.0+
  */
-
 #include <common.h>
 #include <asm/gpio.h>
 #include <asm/arch/gpio.h>
+#include <extcon.h>
+#include <power/max77686_pmic.h>
+#include <power/max77693_muic.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+#include <usb.h>
+#include <usb/dwc2_udc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -25,6 +31,108 @@ static void board_gpio_init(void)
 	gpio_set_pull(EXYNOS4X12_GPIO_X27, S5P_GPIO_PULL_NONE);
 }
 
+static int i9300_phy_control(int on)
+{
+	int ret;
+	int type;
+	struct udevice *vuotg;
+	struct udevice *safeout;
+	struct udevice *extcon;
+	struct udevice *pmic;
+
+	ret = regulator_get_by_platname("VUOTG_3.0V", &vuotg);
+	if (ret) {
+		pr_err("Failed to get VUOTG_3.0V: %d\n", ret);
+		return -1;
+	}
+
+	ret = regulator_get_by_platname("ESAFEOUT1", &safeout);
+	if (ret) {
+		pr_err("Failed to get ESAFEOUT1: %d\n", ret);
+		return -1;
+	}
+
+	ret = extcon_get("muic-max77693", &extcon);
+	if (ret) {
+		pr_err("Failed to get max77693 extcon: %d\n", ret);
+		return -1;
+	}
+
+	ret = pmic_get("max77693_muic@25", &pmic);
+	if (ret) {
+		pr_err("Failed to get MUIC PMIC: %d!\n", ret);
+		return -1;
+	}
+
+	pr_info("Waiting 10 seconds for USB to be inserted...\n");
+	int i = 0;
+	do {
+		extcon_get_cable_id(extcon, &type);
+		if (type & EXTCON_TYPE_USB)
+			break;
+		mdelay(1000);
+	} while (i++ < 10);
+
+	if (!(type & EXTCON_TYPE_USB)) {
+		pr_info("No USB cable detected, aborting!\n");
+		return -1;
+	}
+
+	if (on) {
+		ret = regulator_set_mode(vuotg, OPMODE_ON);
+		if (ret) {
+			pr_err("Failed to set VUOTG_3.0V to ON: %d\n", ret);
+			return -1;
+		}
+
+		ret = regulator_set_enable(safeout, true);
+		if (ret) {
+			pr_err("Failed to enable ESAFEOUT1: %d\n", ret);
+			return -1;
+		}
+
+		/* set MUIC path to USB */
+		ret = pmic_reg_write(pmic, MAX77693_MUIC_CONTROL1,
+				MAX77693_MUIC_CTRL1_DN1DP2);
+		if (ret) {
+			pr_err("Failed to set MUIC path to USB: %d\n", ret);
+			return -1;
+		}
+	} else {
+		ret = regulator_set_mode(vuotg, OPMODE_LPM);
+		if (ret) {
+			pr_err("Failed to set VUOTG_3.0V to LPM: %d\n", ret);
+			return -1;
+		}
+
+		/* set MUIC path to UART */
+		ret = pmic_reg_write(pmic, MAX77693_MUIC_CONTROL1,
+				MAX77693_MUIC_CTRL1_UT1UR2);
+		if (ret) {
+			pr_err("Failed to set MUIC path to UART: %d\n", ret);
+			return -1;
+		}
+
+	}
+
+
+	return 0;
+}
+
+struct dwc2_plat_otg_data exynos4_otg_data = {
+	.phy_control = i9300_phy_control,
+	.regs_phy = EXYNOS4X12_USBPHY_BASE,
+	.regs_otg = EXYNOS4X12_USBOTG_BASE,
+	.usb_phy_ctrl = EXYNOS4X12_USBPHY_CONTROL,
+	.usb_flags = PHY0_SLEEP,
+};
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	pr_info("Board usb init! %d %d\n", index, init);
+	return dwc2_udc_probe(&exynos4_otg_data);
+}
+
 int exynos_init(void)
 {
 	board_gpio_init();