609 lines
11 KiB
C
609 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018 Samsung Electronics
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* Jaehoon Chung <jh80.chung@samsung.com>
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <errno.h>
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#include <dm.h>
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#include <i2c.h>
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#include <linux/delay.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/s2mps11.h>
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#define MODE(_id, _val, _name) { \
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.id = _id, \
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.register_value = _val, \
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.name = _name, \
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}
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/* BUCK : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 */
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static struct dm_regulator_mode s2mps11_buck_modes[] = {
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MODE(OP_OFF, S2MPS11_BUCK_MODE_OFF, "OFF"),
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MODE(OP_STANDBY, S2MPS11_BUCK_MODE_STANDBY, "ON/OFF"),
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MODE(OP_ON, S2MPS11_BUCK_MODE_STANDBY, "ON"),
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};
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static struct dm_regulator_mode s2mps11_ldo_modes[] = {
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MODE(OP_OFF, S2MPS11_LDO_MODE_OFF, "OFF"),
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MODE(OP_STANDBY, S2MPS11_LDO_MODE_STANDBY, "ON/OFF"),
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MODE(OP_STANDBY_LPM, S2MPS11_LDO_MODE_STANDBY_LPM, "ON/LPM"),
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MODE(OP_ON, S2MPS11_LDO_MODE_ON, "ON"),
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};
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static const char s2mps11_buck_ctrl[] = {
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0xff, 0x25, 0x27, 0x29, 0x2b, 0x2d, 0x33, 0x35, 0x37, 0x39, 0x3b
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};
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static const char s2mps11_buck_out[] = {
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0xff, 0x26, 0x28, 0x2a, 0x2c, 0x2f, 0x34, 0x36, 0x38, 0x3a, 0x3c
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};
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static int s2mps11_buck_hex2volt(int buck, int hex)
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{
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unsigned int uV = 0;
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if (hex < 0)
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goto bad;
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switch (buck) {
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case 7:
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case 8:
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case 10:
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if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX)
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goto bad;
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uV = hex * S2MPS11_BUCK_HSTEP + S2MPS11_BUCK_UV_HMIN;
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break;
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case 9:
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if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX)
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goto bad;
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uV = hex * S2MPS11_BUCK9_STEP * 2 + S2MPS11_BUCK9_UV_MIN;
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break;
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default:
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if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX)
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goto bad;
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else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX)
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goto bad;
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uV = hex * S2MPS11_BUCK_LSTEP + S2MPS11_BUCK_UV_MIN;
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break;
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}
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return uV;
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bad:
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pr_err("Value: %#x is wrong for BUCK%d", hex, buck);
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return -EINVAL;
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}
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static int s2mps11_buck_volt2hex(int buck, int uV)
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{
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int hex;
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switch (buck) {
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case 7:
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case 8:
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case 10:
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hex = (uV - S2MPS11_BUCK_UV_HMIN) / S2MPS11_BUCK_HSTEP;
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if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX)
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goto bad;
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break;
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case 9:
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hex = (uV - S2MPS11_BUCK9_UV_MIN) / S2MPS11_BUCK9_STEP;
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if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX)
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goto bad;
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break;
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default:
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hex = (uV - S2MPS11_BUCK_UV_MIN) / S2MPS11_BUCK_LSTEP;
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if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX)
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goto bad;
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else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX)
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goto bad;
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break;
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};
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if (hex >= 0)
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return hex;
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bad:
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pr_err("Value: %d uV is wrong for BUCK%d", uV, buck);
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return -EINVAL;
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}
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static int s2mps11_buck_val(struct udevice *dev, int op, int *uV)
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{
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int hex, buck, ret;
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u32 mask, addr;
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u8 val;
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buck = dev->driver_data;
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if (buck < 1 || buck > S2MPS11_BUCK_NUM) {
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pr_err("Wrong buck number: %d\n", buck);
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return -EINVAL;
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}
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if (op == PMIC_OP_GET)
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*uV = 0;
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addr = s2mps11_buck_out[buck];
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switch (buck) {
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case 9:
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mask = S2MPS11_BUCK9_VOLT_MASK;
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break;
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default:
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mask = S2MPS11_BUCK_VOLT_MASK;
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break;
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}
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ret = pmic_read(dev->parent, addr, &val, 1);
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if (ret)
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return ret;
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if (op == PMIC_OP_GET) {
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val &= mask;
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ret = s2mps11_buck_hex2volt(buck, val);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = s2mps11_buck_volt2hex(buck, *uV);
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if (hex < 0)
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return hex;
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val &= ~mask;
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val |= hex;
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ret = pmic_write(dev->parent, addr, &val, 1);
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return ret;
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}
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static int s2mps11_buck_mode(struct udevice *dev, int op, int *opmode)
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{
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unsigned int addr, mode;
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unsigned char val;
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int buck, ret;
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buck = dev->driver_data;
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if (buck < 1 || buck > S2MPS11_BUCK_NUM) {
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pr_err("Wrong buck number: %d\n", buck);
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return -EINVAL;
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}
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addr = s2mps11_buck_ctrl[buck];
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ret = pmic_read(dev->parent, addr, &val, 1);
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if (ret)
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return ret;
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if (op == PMIC_OP_GET) {
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val &= (S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT);
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switch (val) {
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case S2MPS11_BUCK_MODE_OFF:
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*opmode = OP_OFF;
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break;
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case S2MPS11_BUCK_MODE_STANDBY:
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*opmode = OP_STANDBY;
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break;
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case S2MPS11_BUCK_MODE_ON:
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*opmode = OP_ON;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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switch (*opmode) {
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case OP_OFF:
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mode = S2MPS11_BUCK_MODE_OFF;
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break;
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case OP_STANDBY:
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mode = S2MPS11_BUCK_MODE_STANDBY;
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break;
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case OP_ON:
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mode = S2MPS11_BUCK_MODE_ON;
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break;
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default:
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pr_err("Wrong mode: %d for buck: %d\n", *opmode, buck);
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return -EINVAL;
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}
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val &= ~(S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT);
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val |= mode;
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ret = pmic_write(dev->parent, addr, &val, 1);
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return ret;
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}
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static int s2mps11_buck_enable(struct udevice *dev, int op, bool *enable)
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{
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int ret, on_off;
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if (op == PMIC_OP_GET) {
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ret = s2mps11_buck_mode(dev, op, &on_off);
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if (ret)
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return ret;
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switch (on_off) {
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case OP_OFF:
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*enable = false;
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break;
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case OP_ON:
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*enable = true;
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break;
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default:
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return -EINVAL;
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}
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} else if (op == PMIC_OP_SET) {
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if (*enable)
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on_off = OP_ON;
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else
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on_off = OP_OFF;
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ret = s2mps11_buck_mode(dev, op, &on_off);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int buck_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = s2mps11_buck_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int buck_set_value(struct udevice *dev, int uV)
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{
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return s2mps11_buck_val(dev, PMIC_OP_SET, &uV);
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}
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static int buck_get_enable(struct udevice *dev)
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{
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bool enable = false;
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int ret;
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ret = s2mps11_buck_enable(dev, PMIC_OP_GET, &enable);
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if (ret)
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return ret;
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return enable;
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}
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static int buck_set_enable(struct udevice *dev, bool enable)
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{
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return s2mps11_buck_enable(dev, PMIC_OP_SET, &enable);
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}
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static int buck_get_mode(struct udevice *dev)
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{
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int mode;
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int ret;
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ret = s2mps11_buck_mode(dev, PMIC_OP_GET, &mode);
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if (ret)
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return ret;
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return mode;
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}
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static int buck_set_mode(struct udevice *dev, int mode)
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{
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return s2mps11_buck_mode(dev, PMIC_OP_SET, &mode);
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}
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static int s2mps11_buck_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_plat *uc_pdata;
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uc_pdata = dev_get_uclass_plat(dev);
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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uc_pdata->mode = s2mps11_buck_modes;
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uc_pdata->mode_count = ARRAY_SIZE(s2mps11_buck_modes);
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return 0;
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}
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static const struct dm_regulator_ops s2mps11_buck_ops = {
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.get_value = buck_get_value,
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.set_value = buck_set_value,
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.get_enable = buck_get_enable,
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.set_enable = buck_set_enable,
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.get_mode = buck_get_mode,
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.set_mode = buck_set_mode,
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};
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U_BOOT_DRIVER(s2mps11_buck) = {
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.name = S2MPS11_BUCK_DRIVER,
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.id = UCLASS_REGULATOR,
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.ops = &s2mps11_buck_ops,
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.probe = s2mps11_buck_probe,
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};
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static int s2mps11_ldo_hex2volt(int ldo, int hex)
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{
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unsigned int uV = 0;
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if (hex > S2MPS11_LDO_VOLT_MAX_HEX) {
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pr_err("Value: %#x is wrong for LDO%d", hex, ldo);
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return -EINVAL;
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}
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switch (ldo) {
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case 1:
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case 6:
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case 11:
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case 22:
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case 23:
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case 27:
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case 35:
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uV = hex * S2MPS11_LDO_STEP + S2MPS11_LDO_UV_MIN;
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break;
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default:
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uV = hex * S2MPS11_LDO_STEP * 2 + S2MPS11_LDO_UV_MIN;
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break;
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}
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return uV;
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}
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static int s2mps11_ldo_volt2hex(int ldo, int uV)
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{
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int hex = 0;
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switch (ldo) {
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case 1:
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case 6:
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case 11:
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case 22:
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case 23:
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case 27:
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case 35:
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hex = (uV - S2MPS11_LDO_UV_MIN) / S2MPS11_LDO_STEP;
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break;
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default:
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hex = (uV - S2MPS11_LDO_UV_MIN) / (S2MPS11_LDO_STEP * 2);
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break;
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}
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if (hex >= 0 && hex <= S2MPS11_LDO_VOLT_MAX_HEX)
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return hex;
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pr_err("Value: %d uV is wrong for LDO%d", uV, ldo);
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return -EINVAL;
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return 0;
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}
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static int s2mps11_ldo_val(struct udevice *dev, int op, int *uV)
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{
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unsigned int addr;
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unsigned char val;
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int hex, ldo, ret;
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ldo = dev->driver_data;
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if (ldo < 1 || ldo > S2MPS11_LDO_NUM) {
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pr_err("Wrong ldo number: %d\n", ldo);
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return -EINVAL;
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}
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addr = S2MPS11_REG_L1CTRL + ldo - 1;
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ret = pmic_read(dev->parent, addr, &val, 1);
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if (ret)
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return ret;
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if (op == PMIC_OP_GET) {
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*uV = 0;
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val &= S2MPS11_LDO_VOLT_MASK;
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ret = s2mps11_ldo_hex2volt(ldo, val);
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if (ret < 0)
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return ret;
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*uV = ret;
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return 0;
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}
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hex = s2mps11_ldo_volt2hex(ldo, *uV);
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if (hex < 0)
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return hex;
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val &= ~S2MPS11_LDO_VOLT_MASK;
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val |= hex;
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ret = pmic_write(dev->parent, addr, &val, 1);
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return ret;
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}
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static int s2mps11_ldo_mode(struct udevice *dev, int op, int *opmode)
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{
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unsigned int addr, mode;
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unsigned char val;
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int ldo, ret;
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ldo = dev->driver_data;
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if (ldo < 1 || ldo > S2MPS11_LDO_NUM) {
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pr_err("Wrong ldo number: %d\n", ldo);
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return -EINVAL;
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}
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addr = S2MPS11_REG_L1CTRL + ldo - 1;
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ret = pmic_read(dev->parent, addr, &val, 1);
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if (ret)
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return ret;
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if (op == PMIC_OP_GET) {
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val &= (S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT);
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switch (val) {
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case S2MPS11_LDO_MODE_OFF:
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*opmode = OP_OFF;
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break;
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case S2MPS11_LDO_MODE_STANDBY:
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*opmode = OP_STANDBY;
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break;
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case S2MPS11_LDO_MODE_STANDBY_LPM:
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*opmode = OP_STANDBY_LPM;
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break;
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case S2MPS11_LDO_MODE_ON:
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*opmode = OP_ON;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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switch (*opmode) {
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case OP_OFF:
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mode = S2MPS11_LDO_MODE_OFF;
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break;
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case OP_STANDBY:
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mode = S2MPS11_LDO_MODE_STANDBY;
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break;
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case OP_STANDBY_LPM:
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mode = S2MPS11_LDO_MODE_STANDBY_LPM;
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break;
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case OP_ON:
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mode = S2MPS11_LDO_MODE_ON;
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break;
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default:
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pr_err("Wrong mode: %d for ldo: %d\n", *opmode, ldo);
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return -EINVAL;
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}
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val &= ~(S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT);
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val |= mode;
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ret = pmic_write(dev->parent, addr, &val, 1);
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return ret;
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}
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static int s2mps11_ldo_enable(struct udevice *dev, int op, bool *enable)
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{
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int ret, on_off;
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if (op == PMIC_OP_GET) {
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ret = s2mps11_ldo_mode(dev, op, &on_off);
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if (ret)
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return ret;
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switch (on_off) {
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case OP_OFF:
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*enable = false;
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break;
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case OP_ON:
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*enable = true;
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break;
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default:
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return -EINVAL;
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}
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} else if (op == PMIC_OP_SET) {
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if (*enable)
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on_off = OP_ON;
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else
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on_off = OP_OFF;
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ret = s2mps11_ldo_mode(dev, op, &on_off);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int ldo_get_value(struct udevice *dev)
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{
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int uV;
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int ret;
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ret = s2mps11_ldo_val(dev, PMIC_OP_GET, &uV);
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if (ret)
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return ret;
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return uV;
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}
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static int ldo_set_value(struct udevice *dev, int uV)
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{
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return s2mps11_ldo_val(dev, PMIC_OP_SET, &uV);
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}
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|
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static int ldo_get_enable(struct udevice *dev)
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{
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bool enable = false;
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int ret;
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|
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ret = s2mps11_ldo_enable(dev, PMIC_OP_GET, &enable);
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if (ret)
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return ret;
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return enable;
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|
}
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|
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static int ldo_set_enable(struct udevice *dev, bool enable)
|
|
{
|
|
int ret;
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|
|
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ret = s2mps11_ldo_enable(dev, PMIC_OP_SET, &enable);
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|
if (ret)
|
|
return ret;
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|
|
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/* Wait the "enable delay" for voltage to start to rise */
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udelay(15);
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|
|
|
return 0;
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|
}
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|
|
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static int ldo_get_mode(struct udevice *dev)
|
|
{
|
|
int mode, ret;
|
|
|
|
ret = s2mps11_ldo_mode(dev, PMIC_OP_GET, &mode);
|
|
if (ret)
|
|
return ret;
|
|
return mode;
|
|
}
|
|
|
|
static int ldo_set_mode(struct udevice *dev, int mode)
|
|
{
|
|
return s2mps11_ldo_mode(dev, PMIC_OP_SET, &mode);
|
|
}
|
|
|
|
static int s2mps11_ldo_probe(struct udevice *dev)
|
|
{
|
|
struct dm_regulator_uclass_plat *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_plat(dev);
|
|
uc_pdata->type = REGULATOR_TYPE_LDO;
|
|
uc_pdata->mode = s2mps11_ldo_modes;
|
|
uc_pdata->mode_count = ARRAY_SIZE(s2mps11_ldo_modes);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dm_regulator_ops s2mps11_ldo_ops = {
|
|
.get_value = ldo_get_value,
|
|
.set_value = ldo_set_value,
|
|
.get_enable = ldo_get_enable,
|
|
.set_enable = ldo_set_enable,
|
|
.get_mode = ldo_get_mode,
|
|
.set_mode = ldo_set_mode,
|
|
};
|
|
|
|
U_BOOT_DRIVER(s2mps11_ldo) = {
|
|
.name = S2MPS11_LDO_DRIVER,
|
|
.id = UCLASS_REGULATOR,
|
|
.ops = &s2mps11_ldo_ops,
|
|
.probe = s2mps11_ldo_probe,
|
|
};
|