2 * Copyright (C) 2012 Samsung Electronics
3 * Rajeshwari Shinde <rajeshwari.s@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <power/pmic.h>
12 #include <power/max77686_pmic.h>
15 DECLARE_GLOBAL_DATA_PTR;
17 static const char max77686_buck_addr[] = {
18 0xff, 0x10, 0x12, 0x1c, 0x26, 0x30, 0x32, 0x34, 0x36, 0x38
21 static unsigned int max77686_ldo_volt2hex(int ldo, ulong uV)
32 hex = (uV - 800000) / 25000;
35 hex = (uV - 800000) / 50000;
38 if (hex >= 0 && hex <= MAX77686_LDO_VOLT_MAX_HEX)
41 debug("%s: %ld is wrong voltage value for LDO%d\n", __func__, uV, ldo);
45 int max77686_set_ldo_voltage(struct pmic *p, int ldo, ulong uV)
47 unsigned int val, ret, hex, adr;
49 if (ldo < 1 && ldo > 26) {
50 printf("%s: %d is wrong ldo number\n", __func__, ldo);
54 adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
55 hex = max77686_ldo_volt2hex(ldo, uV);
60 ret = pmic_reg_read(p, adr, &val);
64 val &= ~MAX77686_LDO_VOLT_MASK;
66 ret |= pmic_reg_write(p, adr, val);
71 int max77686_set_ldo_mode(struct pmic *p, int ldo, char opmode)
73 unsigned int val, ret, adr, mode;
75 if (ldo < 1 && 26 < ldo) {
76 printf("%s: %d is wrong ldo number\n", __func__, ldo);
80 adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
85 mode = MAX77686_LDO_MODE_OFF;
99 mode = MAX77686_LDO_MODE_STANDBY;
106 mode = MAX77686_LDO_MODE_LPM;
109 mode = MAX77686_LDO_MODE_ON;
116 printf("%s: %d is not supported on LDO%d\n",
117 __func__, opmode, ldo);
121 ret = pmic_reg_read(p, adr, &val);
125 val &= ~MAX77686_LDO_MODE_MASK;
127 ret |= pmic_reg_write(p, adr, val);
132 int max77686_set_buck_mode(struct pmic *p, int buck, char opmode)
134 unsigned int val, ret, mask, adr, size, mode, mode_shift;
136 size = ARRAY_SIZE(max77686_buck_addr);
138 printf("%s: %d is wrong buck number\n", __func__, buck);
142 adr = max77686_buck_addr[buck];
149 mode_shift = MAX77686_BUCK_MODE_SHIFT_2;
152 mode_shift = MAX77686_BUCK_MODE_SHIFT_1;
155 mask = MAX77686_BUCK_MODE_MASK << mode_shift;
160 mode = MAX77686_BUCK_MODE_OFF;
168 mode = MAX77686_BUCK_MODE_STANDBY << mode_shift;
179 mode = MAX77686_BUCK_MODE_LPM << mode_shift;
186 mode = MAX77686_BUCK_MODE_ON << mode_shift;
193 printf("%s: %d is not supported on BUCK%d\n",
194 __func__, opmode, buck);
198 ret = pmic_reg_read(p, adr, &val);
204 ret |= pmic_reg_write(p, adr, val);
209 int pmic_init(unsigned char bus)
211 static const char name[] = "MAX77686_PMIC";
212 struct pmic *p = pmic_alloc();
215 printf("%s: POWER allocation error!\n", __func__);
219 #ifdef CONFIG_OF_CONTROL
220 const void *blob = gd->fdt_blob;
223 node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
225 debug("PMIC: No node for PMIC Chip in device tree\n");
226 debug("node = %d\n", node);
230 parent = fdt_parent_offset(blob, node);
232 debug("%s: Cannot find node parent\n", __func__);
236 p->bus = i2c_get_bus_num_fdt(parent);
238 debug("%s: Cannot find I2C bus\n", __func__);
241 p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
244 p->hw.i2c.addr = MAX77686_I2C_ADDR;
248 p->interface = PMIC_I2C;
249 p->number_of_regs = PMIC_NUM_OF_REGS;
250 p->hw.i2c.tx_num = 1;
252 puts("Board PMIC init\n");