1 /*
2  * Copyright (C) 2012 Samsung Electronics
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <dm.h>
9 #include <dwc3-uboot.h>
10 #include <fdtdec.h>
11 #include <asm/io.h>
12 #include <errno.h>
13 #include <i2c.h>
14 #include <mmc.h>
15 #include <netdev.h>
16 #include <samsung-usb-phy-uboot.h>
17 #include <spi.h>
18 #include <usb.h>
19 #include <video_bridge.h>
20 #include <asm/gpio.h>
21 #include <asm/arch/cpu.h>
22 #include <asm/arch/dwmmc.h>
23 #include <asm/arch/mmc.h>
24 #include <asm/arch/pinmux.h>
25 #include <asm/arch/power.h>
26 #include <asm/arch/sromc.h>
27 #include <power/pmic.h>
28 #include <power/max77686_pmic.h>
29 #include <power/regulator.h>
30 #include <power/s2mps11.h>
31 #include <power/s5m8767.h>
32 #include <samsung/exynos5-dt-types.h>
33 #include <samsung/misc.h>
34 #include <tmu.h>
35 
36 DECLARE_GLOBAL_DATA_PTR;
37 
38 static void board_enable_audio_codec(void)
39 {
40 	int node, ret;
41 	struct gpio_desc en_gpio;
42 
43 	node = fdtdec_next_compatible(gd->fdt_blob, 0,
44 		COMPAT_SAMSUNG_EXYNOS5_SOUND);
45 	if (node <= 0)
46 		return;
47 
48 	ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
49 					 "codec-enable-gpio", 0, &en_gpio,
50 					 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
51 	if (ret == -FDT_ERR_NOTFOUND)
52 		return;
53 
54 	/* Turn on the GPIO which connects to the codec's "enable" line. */
55 	gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
56 
57 #ifdef CONFIG_SOUND_MAX98095
58 	/* Enable MAX98095 Codec */
59 	gpio_request(EXYNOS5_GPIO_X17, "max98095_enable");
60 	gpio_direction_output(EXYNOS5_GPIO_X17, 1);
61 	gpio_set_pull(EXYNOS5_GPIO_X17, S5P_GPIO_PULL_NONE);
62 #endif
63 }
64 
65 int exynos_init(void)
66 {
67 	board_enable_audio_codec();
68 
69 	return 0;
70 }
71 
72 static int exynos_set_regulator(const char *name, uint uv)
73 {
74 	struct udevice *dev;
75 	int ret;
76 
77 	ret = regulator_get_by_platname(name, &dev);
78 	if (ret) {
79 		debug("%s: Cannot find regulator %s\n", __func__, name);
80 		return ret;
81 	}
82 	ret = regulator_set_value(dev, uv);
83 	if (ret) {
84 		debug("%s: Cannot set regulator %s\n", __func__, name);
85 		return ret;
86 	}
87 
88 	return 0;
89 }
90 
91 int exynos_power_init(void)
92 {
93 	struct udevice *dev;
94 	int ret;
95 
96 	ret = pmic_get("max77686", &dev);
97 	if (!ret) {
98 		/* TODO(sjg@chromium.org): Move into the clock/pmic API */
99 		ret = pmic_clrsetbits(dev, MAX77686_REG_PMIC_32KHZ, 0,
100 				MAX77686_32KHCP_EN);
101 		if (ret)
102 			return ret;
103 		ret = pmic_clrsetbits(dev, MAX77686_REG_PMIC_BBAT, 0,
104 				MAX77686_BBCHOSTEN | MAX77686_BBCVS_3_5V);
105 		if (ret)
106 			return ret;
107 	} else {
108 		ret = pmic_get("s5m8767-pmic", &dev);
109 		/* TODO(sjg@chromium.org): Use driver model to access clock */
110 #ifdef CONFIG_PMIC_S5M8767
111 		if (!ret)
112 			s5m8767_enable_32khz_cp(dev);
113 #endif
114 	}
115 	if (ret == -ENODEV)
116 		return 0;
117 
118 	ret = regulators_enable_boot_on(false);
119 	if (ret)
120 		return ret;
121 
122 	ret = exynos_set_regulator("vdd_mif", 1100000);
123 	if (ret)
124 		return ret;
125 
126 	ret = exynos_set_regulator("vdd_arm", 1300000);
127 	if (ret)
128 		return ret;
129 	ret = exynos_set_regulator("vdd_int", 1012500);
130 	if (ret)
131 		return ret;
132 	ret = exynos_set_regulator("vdd_g3d", 1200000);
133 	if (ret)
134 		return ret;
135 
136 	return 0;
137 }
138 
139 int board_get_revision(void)
140 {
141 	return 0;
142 }
143 
144 #ifdef CONFIG_USB_DWC3
145 static struct dwc3_device dwc3_device_data = {
146 	.maximum_speed = USB_SPEED_SUPER,
147 	.base = 0x12400000,
148 	.dr_mode = USB_DR_MODE_PERIPHERAL,
149 	.index = 0,
150 };
151 
152 int usb_gadget_handle_interrupts(void)
153 {
154 	dwc3_uboot_handle_interrupt(0);
155 	return 0;
156 }
157 
158 int board_usb_init(int index, enum usb_init_type init)
159 {
160 	struct exynos_usb3_phy *phy = (struct exynos_usb3_phy *)
161 		samsung_get_base_usb3_phy();
162 
163 	if (!phy) {
164 		pr_err("usb3 phy not supported");
165 		return -ENODEV;
166 	}
167 
168 	set_usbdrd_phy_ctrl(POWER_USB_DRD_PHY_CTRL_EN);
169 	exynos5_usb3_phy_init(phy);
170 
171 	return dwc3_uboot_init(&dwc3_device_data);
172 }
173 #endif
174 #ifdef CONFIG_SET_DFU_ALT_INFO
175 char *get_dfu_alt_system(char *interface, char *devstr)
176 {
177 	char *info = "Not supported!";
178 
179 	if (board_is_odroidxu4())
180 		return info;
181 
182 	return env_get("dfu_alt_system");
183 }
184 
185 char *get_dfu_alt_boot(char *interface, char *devstr)
186 {
187 	char *info = "Not supported!";
188 	struct mmc *mmc;
189 	char *alt_boot;
190 	int dev_num;
191 
192 	if (board_is_odroidxu4())
193 		return info;
194 
195 	dev_num = simple_strtoul(devstr, NULL, 10);
196 
197 	mmc = find_mmc_device(dev_num);
198 	if (!mmc)
199 		return NULL;
200 
201 	if (mmc_init(mmc))
202 		return NULL;
203 
204 	if (IS_SD(mmc))
205 		alt_boot = CONFIG_DFU_ALT_BOOT_SD;
206 	else
207 		alt_boot = CONFIG_DFU_ALT_BOOT_EMMC;
208 
209 	return alt_boot;
210 }
211 #endif
212