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 static int max77686_buck_volt2hex(int buck, ulong uV)
49 if (buck < 5 || buck > 9) {
50 debug("%s: buck %d is not supported\n", __func__, buck);
54 hex = (uV - 750000) / 50000;
56 if (hex >= 0 && hex <= MAX77686_BUCK_VOLT_MAX_HEX)
59 debug("%s: %ld is wrong voltage value for BUCK%d\n",
64 int max77686_set_ldo_voltage(struct pmic *p, int ldo, ulong uV)
66 unsigned int val, ret, hex, adr;
68 if (ldo < 1 || ldo > 26) {
69 printf("%s: %d is wrong ldo number\n", __func__, ldo);
73 adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
74 hex = max77686_ldo_volt2hex(ldo, uV);
79 ret = pmic_reg_read(p, adr, &val);
83 val &= ~MAX77686_LDO_VOLT_MASK;
85 ret |= pmic_reg_write(p, adr, val);
90 int max77686_set_buck_voltage(struct pmic *p, int buck, ulong uV)
92 unsigned int val, adr;
95 if (buck < 5 || buck > 9) {
96 printf("%s: %d is an unsupported bucket number\n",
101 adr = max77686_buck_addr[buck] + 1;
102 hex = max77686_buck_volt2hex(buck, uV);
107 ret = pmic_reg_read(p, adr, &val);
111 val &= ~MAX77686_BUCK_VOLT_MASK;
112 ret |= pmic_reg_write(p, adr, val | hex);
117 int max77686_set_ldo_mode(struct pmic *p, int ldo, char opmode)
119 unsigned int val, ret, adr, mode;
121 if (ldo < 1 || 26 < ldo) {
122 printf("%s: %d is wrong ldo number\n", __func__, ldo);
126 adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
131 mode = MAX77686_LDO_MODE_OFF;
145 mode = MAX77686_LDO_MODE_STANDBY;
152 mode = MAX77686_LDO_MODE_LPM;
155 mode = MAX77686_LDO_MODE_ON;
162 printf("%s: %d is not supported on LDO%d\n",
163 __func__, opmode, ldo);
167 ret = pmic_reg_read(p, adr, &val);
171 val &= ~MAX77686_LDO_MODE_MASK;
173 ret |= pmic_reg_write(p, adr, val);
178 int max77686_set_buck_mode(struct pmic *p, int buck, char opmode)
180 unsigned int val, ret, mask, adr, size, mode, mode_shift;
182 size = ARRAY_SIZE(max77686_buck_addr);
184 printf("%s: %d is wrong buck number\n", __func__, buck);
188 adr = max77686_buck_addr[buck];
195 mode_shift = MAX77686_BUCK_MODE_SHIFT_2;
198 mode_shift = MAX77686_BUCK_MODE_SHIFT_1;
201 mask = MAX77686_BUCK_MODE_MASK << mode_shift;
206 mode = MAX77686_BUCK_MODE_OFF << mode_shift;
214 mode = MAX77686_BUCK_MODE_STANDBY << mode_shift;
225 mode = MAX77686_BUCK_MODE_LPM << mode_shift;
232 mode = MAX77686_BUCK_MODE_ON << mode_shift;
239 printf("%s: %d is not supported on BUCK%d\n",
240 __func__, opmode, buck);
244 ret = pmic_reg_read(p, adr, &val);
250 ret |= pmic_reg_write(p, adr, val);
255 int pmic_init(unsigned char bus)
257 static const char name[] = "MAX77686_PMIC";
258 struct pmic *p = pmic_alloc();
259 #if CONFIG_IS_ENABLED(OF_CONTROL)
260 const void *blob = gd->fdt_blob;
261 int node, parent, tmp;
265 printf("%s: POWER allocation error!\n", __func__);
269 #if CONFIG_IS_ENABLED(OF_CONTROL)
270 node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
272 debug("PMIC: No node for PMIC Chip in device tree\n");
273 debug("node = %d\n", node);
277 parent = fdt_parent_offset(blob, node);
279 debug("%s: Cannot find node parent\n", __func__);
283 /* tmp since p->bus is unsigned */
284 tmp = i2c_get_bus_num_fdt(parent);
286 debug("%s: Cannot find I2C bus\n", __func__);
290 p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
293 p->hw.i2c.addr = MAX77686_I2C_ADDR;
297 p->interface = PMIC_I2C;
298 p->number_of_regs = MAX77686_NUM_OF_REGS;
299 p->hw.i2c.tx_num = 1;
301 puts("Board PMIC init\n");