+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2012 Samsung Electronics
- * Rajeshwari Shinde <rajeshwari.s@samsung.com>
- */
-
-#include <common.h>
-#include <fdtdec.h>
-#include <i2c.h>
-#include <power/pmic.h>
-#include <power/max77686_pmic.h>
-#include <errno.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static const char max77686_buck_addr[] = {
- 0xff, 0x10, 0x12, 0x1c, 0x26, 0x30, 0x32, 0x34, 0x36, 0x38
-};
-
-static unsigned int max77686_ldo_volt2hex(int ldo, ulong uV)
-{
- unsigned int hex = 0;
-
- switch (ldo) {
- case 1:
- case 2:
- case 6:
- case 7:
- case 8:
- case 15:
- hex = (uV - 800000) / 25000;
- break;
- default:
- hex = (uV - 800000) / 50000;
- }
-
- if (hex >= 0 && hex <= MAX77686_LDO_VOLT_MAX_HEX)
- return hex;
-
- debug("%s: %ld is wrong voltage value for LDO%d\n", __func__, uV, ldo);
- return 0;
-}
-
-static int max77686_buck_volt2hex(int buck, ulong uV)
-{
- int hex = 0;
-
- if (buck < 5 || buck > 9) {
- debug("%s: buck %d is not supported\n", __func__, buck);
- return -EINVAL;
- }
-
- hex = (uV - 750000) / 50000;
-
- if (hex >= 0 && hex <= MAX77686_BUCK_VOLT_MAX_HEX)
- return hex;
-
- debug("%s: %ld is wrong voltage value for BUCK%d\n",
- __func__, uV, buck);
- return -EINVAL;
-}
-
-int max77686_set_ldo_voltage(struct pmic *p, int ldo, ulong uV)
-{
- unsigned int val, ret, hex, adr;
-
- if (ldo < 1 || ldo > 26) {
- printf("%s: %d is wrong ldo number\n", __func__, ldo);
- return -EINVAL;
- }
-
- adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
- hex = max77686_ldo_volt2hex(ldo, uV);
-
- if (!hex)
- return -EINVAL;
-
- ret = pmic_reg_read(p, adr, &val);
- if (ret)
- return ret;
-
- val &= ~MAX77686_LDO_VOLT_MASK;
- val |= hex;
- ret |= pmic_reg_write(p, adr, val);
-
- return ret;
-}
-
-int max77686_set_buck_voltage(struct pmic *p, int buck, ulong uV)
-{
- unsigned int val, adr;
- int hex, ret;
-
- if (buck < 5 || buck > 9) {
- printf("%s: %d is an unsupported bucket number\n",
- __func__, buck);
- return -EINVAL;
- }
-
- adr = max77686_buck_addr[buck] + 1;
- hex = max77686_buck_volt2hex(buck, uV);
-
- if (hex < 0)
- return hex;
-
- ret = pmic_reg_read(p, adr, &val);
- if (ret)
- return ret;
-
- val &= ~MAX77686_BUCK_VOLT_MASK;
- ret |= pmic_reg_write(p, adr, val | hex);
-
- return ret;
-}
-
-int max77686_set_ldo_mode(struct pmic *p, int ldo, char opmode)
-{
- unsigned int val, ret, adr, mode;
-
- if (ldo < 1 || 26 < ldo) {
- printf("%s: %d is wrong ldo number\n", __func__, ldo);
- return -EINVAL;
- }
-
- adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
-
- /* mode */
- switch (opmode) {
- case OPMODE_OFF:
- mode = MAX77686_LDO_MODE_OFF;
- break;
- case OPMODE_STANDBY:
- switch (ldo) {
- case 2:
- case 6:
- case 7:
- case 8:
- case 10:
- case 11:
- case 12:
- case 14:
- case 15:
- case 16:
- mode = MAX77686_LDO_MODE_STANDBY;
- break;
- default:
- mode = 0xff;
- }
- break;
- case OPMODE_LPM:
- mode = MAX77686_LDO_MODE_LPM;
- break;
- case OPMODE_ON:
- mode = MAX77686_LDO_MODE_ON;
- break;
- default:
- mode = 0xff;
- }
-
- if (mode == 0xff) {
- printf("%s: %d is not supported on LDO%d\n",
- __func__, opmode, ldo);
- return -ENOTSUPP;
- }
-
- ret = pmic_reg_read(p, adr, &val);
- if (ret)
- return ret;
-
- val &= ~MAX77686_LDO_MODE_MASK;
- val |= mode;
- ret |= pmic_reg_write(p, adr, val);
-
- return ret;
-}
-
-int max77686_set_buck_mode(struct pmic *p, int buck, char opmode)
-{
- unsigned int val, ret, mask, adr, size, mode, mode_shift;
-
- size = ARRAY_SIZE(max77686_buck_addr);
- if (buck >= size) {
- printf("%s: %d is wrong buck number\n", __func__, buck);
- return -EINVAL;
- }
-
- adr = max77686_buck_addr[buck];
-
- /* mask */
- switch (buck) {
- case 2:
- case 3:
- case 4:
- mode_shift = MAX77686_BUCK_MODE_SHIFT_2;
- break;
- default:
- mode_shift = MAX77686_BUCK_MODE_SHIFT_1;
- }
-
- mask = MAX77686_BUCK_MODE_MASK << mode_shift;
-
- /* mode */
- switch (opmode) {
- case OPMODE_OFF:
- mode = MAX77686_BUCK_MODE_OFF << mode_shift;
- break;
- case OPMODE_STANDBY:
- switch (buck) {
- case 1:
- case 2:
- case 3:
- case 4:
- mode = MAX77686_BUCK_MODE_STANDBY << mode_shift;
- break;
- default:
- mode = 0xff;
- }
- break;
- case OPMODE_LPM:
- switch (buck) {
- case 2:
- case 3:
- case 4:
- mode = MAX77686_BUCK_MODE_LPM << mode_shift;
- break;
- default:
- mode = 0xff;
- }
- break;
- case OPMODE_ON:
- mode = MAX77686_BUCK_MODE_ON << mode_shift;
- break;
- default:
- mode = 0xff;
- }
-
- if (mode == 0xff) {
- printf("%s: %d is not supported on BUCK%d\n",
- __func__, opmode, buck);
- return -ENOTSUPP;
- }
-
- ret = pmic_reg_read(p, adr, &val);
- if (ret)
- return ret;
-
- val &= ~mask;
- val |= mode;
- ret |= pmic_reg_write(p, adr, val);
-
- return ret;
-}
-
-int pmic_init(unsigned char bus)
-{
- static const char name[] = "MAX77686_PMIC";
- struct pmic *p = pmic_alloc();
-#if CONFIG_IS_ENABLED(OF_CONTROL)
- const void *blob = gd->fdt_blob;
- int node, parent, tmp;
-#endif
-
- if (!p) {
- printf("%s: POWER allocation error!\n", __func__);
- return -ENOMEM;
- }
-
-#if CONFIG_IS_ENABLED(OF_CONTROL)
- node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
- if (node < 0) {
- debug("PMIC: No node for PMIC Chip in device tree\n");
- debug("node = %d\n", node);
- return -ENODEV;
- }
-
- parent = fdt_parent_offset(blob, node);
- if (parent < 0) {
- debug("%s: Cannot find node parent\n", __func__);
- return -ENODEV;
- }
-
- /* tmp since p->bus is unsigned */
- tmp = i2c_get_bus_num_fdt(parent);
- if (tmp < 0) {
- debug("%s: Cannot find I2C bus\n", __func__);
- return -ENODEV;
- }
- p->bus = tmp;
- p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
-#else
- p->bus = bus;
- p->hw.i2c.addr = MAX77686_I2C_ADDR;
-#endif
-
- p->name = name;
- p->interface = PMIC_I2C;
- p->number_of_regs = MAX77686_NUM_OF_REGS;
- p->hw.i2c.tx_num = 1;
-
- puts("Board PMIC init\n");
-
- return 0;
-}
projects / u-boot.git / commitdiff