mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
154 lines
3.2 KiB
C
154 lines
3.2 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_act8846.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/act8846_pmic.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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static const u16 voltage_map[] = {
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600, 625, 650, 675, 700, 725, 750, 775,
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800, 825, 850, 875, 900, 925, 950, 975,
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1000, 1025, 1050, 1075, 1100, 1125, 1150, 1175,
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1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550,
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1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950,
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2000, 2050, 2100, 2150, 2200, 2250, 2300, 2350,
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2400, 2500, 2600, 2700, 2800, 2900, 3000, 3100,
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3200, 3300, 3400, 3500, 3600, 3700, 3800, 3900,
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};
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enum {
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REG_SYS0,
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REG_SYS1,
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REG1_VOL = 0x10,
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REG1_CTL = 0X11,
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REG2_VOL0 = 0x20,
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REG2_VOL1,
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REG2_CTL,
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REG3_VOL0 = 0x30,
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REG3_VOL1,
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REG3_CTL,
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REG4_VOL0 = 0x40,
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REG4_VOL1,
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REG4_CTL,
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REG5_VOL = 0x50,
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REG5_CTL,
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REG6_VOL = 0X58,
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REG6_CTL,
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REG7_VOL = 0x60,
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REG7_CTL,
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REG8_VOL = 0x68,
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REG8_CTL,
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REG9_VOL = 0x70,
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REG9_CTL,
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REG10_VOL = 0x80,
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REG10_CTL,
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REG11_VOL = 0x90,
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REG11_CTL,
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REG12_VOL = 0xa0,
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REG12_CTL,
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REG13 = 0xb1,
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};
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static const u8 addr_vol[] = {
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0, REG1_VOL, REG2_VOL0, REG3_VOL0, REG4_VOL0,
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REG5_VOL, REG6_VOL, REG7_VOL, REG8_VOL, REG9_VOL,
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REG10_VOL, REG11_VOL, REG12_VOL,
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};
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static const u8 addr_ctl[] = {
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0, REG1_CTL, REG2_CTL, REG3_CTL, REG4_CTL,
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REG5_CTL, REG6_CTL, REG7_CTL, REG8_CTL, REG9_CTL,
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REG10_CTL, REG11_CTL, REG12_CTL,
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};
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static int check_volt_table(const u16 *volt_table, int uvolt)
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{
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int i;
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for (i = VOL_MIN_IDX; i < VOL_MAX_IDX; i++) {
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if (uvolt <= (volt_table[i] * 1000))
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return i;
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}
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return -EINVAL;
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}
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static int reg_get_value(struct udevice *dev)
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{
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int reg = dev->driver_data;
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int ret;
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ret = pmic_reg_read(dev->parent, addr_vol[reg]);
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if (ret < 0)
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return ret;
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return voltage_map[ret & LDO_VOL_MASK] * 1000;
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}
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static int reg_set_value(struct udevice *dev, int uvolt)
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{
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int reg = dev->driver_data;
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int val;
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val = check_volt_table(voltage_map, uvolt);
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if (val < 0)
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return val;
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return pmic_clrsetbits(dev->parent, addr_vol[reg], LDO_VOL_MASK, val);
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}
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static int reg_set_enable(struct udevice *dev, bool enable)
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{
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int reg = dev->driver_data;
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return pmic_clrsetbits(dev->parent, addr_ctl[reg], LDO_EN_MASK,
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enable ? LDO_EN_MASK : 0);
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}
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static int reg_get_enable(struct udevice *dev)
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{
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int reg = dev->driver_data;
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int ret;
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ret = pmic_reg_read(dev->parent, addr_ctl[reg]);
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if (ret < 0)
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return ret;
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return ret & LDO_EN_MASK ? true : false;
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}
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static int act8846_reg_probe(struct udevice *dev)
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{
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struct dm_regulator_uclass_platdata *uc_pdata;
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int reg = dev->driver_data;
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uc_pdata = dev_get_uclass_platdata(dev);
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uc_pdata->type = reg <= 4 ? REGULATOR_TYPE_BUCK : 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 const struct dm_regulator_ops act8846_reg_ops = {
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.get_value = reg_get_value,
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.set_value = reg_set_value,
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.get_enable = reg_get_enable,
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.set_enable = reg_set_enable,
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};
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U_BOOT_DRIVER(act8846_buck) = {
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.name = "act8846_reg",
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.id = UCLASS_REGULATOR,
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.ops = &act8846_reg_ops,
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.probe = act8846_reg_probe,
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};
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