389 lines
9.1 KiB
C
389 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
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* Copyright (C) 2012 rockchips
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* zyw <zyw@rock-chips.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <power/rk8xx_pmic.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#ifndef CONFIG_SPL_BUILD
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#define ENABLE_DRIVER
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#endif
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/* Field Definitions */
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#define RK808_BUCK_VSEL_MASK 0x3f
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#define RK808_BUCK4_VSEL_MASK 0xf
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#define RK808_LDO_VSEL_MASK 0x1f
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#define RK818_BUCK_VSEL_MASK 0x3f
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#define RK818_BUCK4_VSEL_MASK 0x1f
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#define RK818_LDO_VSEL_MASK 0x1f
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#define RK818_LDO3_ON_VSEL_MASK 0xf
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#define RK818_BOOST_ON_VSEL_MASK 0xe0
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#define RK818_USB_ILIM_SEL_MASK 0x0f
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#define RK818_USB_CHG_SD_VSEL_MASK 0x70
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struct rk8xx_reg_info {
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uint min_uv;
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uint step_uv;
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s8 vsel_reg;
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u8 vsel_mask;
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};
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static const struct rk8xx_reg_info rk808_buck[] = {
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{ 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
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{ 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
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{ 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
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{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
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};
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static const struct rk8xx_reg_info rk818_buck[] = {
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{ 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
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{ 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
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{ 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
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{ 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
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};
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#ifdef ENABLE_DRIVER
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static const struct rk8xx_reg_info rk808_ldo[] = {
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{ 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
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{ 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
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{ 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
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{ 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
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};
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static const struct rk8xx_reg_info rk818_ldo[] = {
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{ 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
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{ 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
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{ 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
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{ 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
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{ 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
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};
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#endif
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static const u16 rk818_chrg_cur_input_array[] = {
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450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
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};
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static const uint rk818_chrg_shutdown_vsel_array[] = {
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2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
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};
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static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
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int num)
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{
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struct rk8xx_priv *priv = dev_get_priv(pmic);
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switch (priv->variant) {
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case RK818_ID:
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return &rk818_buck[num];
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default:
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return &rk808_buck[num];
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}
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}
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static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
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{
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const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
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int mask = info->vsel_mask;
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int val;
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if (info->vsel_reg == -1)
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return -ENOSYS;
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val = (uvolt - info->min_uv) / info->step_uv;
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debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
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val);
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return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
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}
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static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
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{
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uint mask;
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int ret;
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buck--;
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mask = 1 << buck;
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if (enable) {
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ret = pmic_clrsetbits(pmic, REG_DCDC_ILMAX, 0, 3 << (buck * 2));
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if (ret)
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return ret;
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ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
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if (ret)
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return ret;
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}
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return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
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}
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#ifdef ENABLE_DRIVER
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static const struct rk8xx_reg_info *get_ldo_reg(struct udevice *pmic,
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int num)
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{
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struct rk8xx_priv *priv = dev_get_priv(pmic);
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switch (priv->variant) {
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case RK818_ID:
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return &rk818_ldo[num];
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default:
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return &rk808_ldo[num];
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}
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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 buck = dev->driver_data - 1;
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const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
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int mask = info->vsel_mask;
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int ret, val;
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if (info->vsel_reg == -1)
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return -ENOSYS;
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ret = pmic_reg_read(dev->parent, info->vsel_reg);
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if (ret < 0)
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return ret;
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val = ret & mask;
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return info->min_uv + val * info->step_uv;
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}
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static int buck_set_value(struct udevice *dev, int uvolt)
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{
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int buck = dev->driver_data;
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return _buck_set_value(dev->parent, buck, uvolt);
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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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int buck = dev->driver_data;
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return _buck_set_enable(dev->parent, buck, enable);
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}
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static int buck_get_enable(struct udevice *dev)
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{
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int buck = dev->driver_data - 1;
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int ret;
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uint mask;
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mask = 1 << buck;
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ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
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if (ret < 0)
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return ret;
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return ret & mask ? true : false;
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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 ldo = dev->driver_data - 1;
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const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
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int mask = info->vsel_mask;
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int ret, val;
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if (info->vsel_reg == -1)
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return -ENOSYS;
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ret = pmic_reg_read(dev->parent, info->vsel_reg);
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if (ret < 0)
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return ret;
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val = ret & mask;
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return info->min_uv + val * info->step_uv;
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}
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static int ldo_set_value(struct udevice *dev, int uvolt)
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{
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int ldo = dev->driver_data - 1;
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const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
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int mask = info->vsel_mask;
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int val;
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if (info->vsel_reg == -1)
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return -ENOSYS;
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val = (uvolt - info->min_uv) / info->step_uv;
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debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
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val);
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return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
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}
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static int ldo_set_enable(struct udevice *dev, bool enable)
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{
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int ldo = dev->driver_data - 1;
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uint mask;
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mask = 1 << ldo;
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return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
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enable ? mask : 0);
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}
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static int ldo_get_enable(struct udevice *dev)
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{
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int ldo = dev->driver_data - 1;
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int ret;
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uint mask;
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mask = 1 << ldo;
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ret = pmic_reg_read(dev->parent, REG_LDO_EN);
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if (ret < 0)
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return ret;
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return ret & mask ? true : false;
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}
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static int switch_set_enable(struct udevice *dev, bool enable)
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{
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int sw = dev->driver_data - 1;
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uint mask;
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mask = 1 << (sw + 5);
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return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
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enable ? mask : 0);
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}
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static int switch_get_enable(struct udevice *dev)
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{
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int sw = dev->driver_data - 1;
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int ret;
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uint mask;
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mask = 1 << (sw + 5);
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ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
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if (ret < 0)
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return ret;
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return ret & mask ? true : false;
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}
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static int rk8xx_buck_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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uc_pdata->type = REGULATOR_TYPE_BUCK;
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uc_pdata->mode_count = 0;
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return 0;
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}
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static int rk8xx_ldo_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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uc_pdata->type = REGULATOR_TYPE_LDO;
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uc_pdata->mode_count = 0;
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return 0;
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}
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static int rk8xx_switch_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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uc_pdata = dev_get_uclass_platdata(dev);
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uc_pdata->type = REGULATOR_TYPE_FIXED;
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uc_pdata->mode_count = 0;
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return 0;
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}
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static const struct dm_regulator_ops rk8xx_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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};
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static const struct dm_regulator_ops rk8xx_ldo_ops = {
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.get_value = ldo_get_value,
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.set_value = ldo_set_value,
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.get_enable = ldo_get_enable,
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.set_enable = ldo_set_enable,
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};
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static const struct dm_regulator_ops rk8xx_switch_ops = {
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.get_enable = switch_get_enable,
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.set_enable = switch_set_enable,
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};
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U_BOOT_DRIVER(rk8xx_buck) = {
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.name = "rk8xx_buck",
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.id = UCLASS_REGULATOR,
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.ops = &rk8xx_buck_ops,
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.probe = rk8xx_buck_probe,
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};
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U_BOOT_DRIVER(rk8xx_ldo) = {
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.name = "rk8xx_ldo",
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.id = UCLASS_REGULATOR,
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.ops = &rk8xx_ldo_ops,
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.probe = rk8xx_ldo_probe,
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};
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U_BOOT_DRIVER(rk8xx_switch) = {
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.name = "rk8xx_switch",
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.id = UCLASS_REGULATOR,
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.ops = &rk8xx_switch_ops,
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.probe = rk8xx_switch_probe,
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};
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#endif
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int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
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{
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int ret;
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ret = _buck_set_value(pmic, buck, uvolt);
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if (ret)
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return ret;
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return _buck_set_enable(pmic, buck, true);
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}
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int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
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{
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uint i;
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for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
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if (current_ma <= rk818_chrg_cur_input_array[i])
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break;
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return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
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}
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int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
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{
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uint i;
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for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
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if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
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break;
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return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,
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i);
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}
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