291 lines
6.9 KiB
C
291 lines
6.9 KiB
C
/*
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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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* SPDX-License-Identifier: GPL-2.0+
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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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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Only when system suspend while U-Boot charge needs this config support
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*/
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#ifdef CONFIG_DM_CHARGE_DISPLAY
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static struct reg_data rk817_init_reg[] = {
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/* Set pmic_sleep as sleep function */
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{ RK817_PMIC_SYS_CFG3, 0x08, 0x18 },
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/* Set pmic_int active low */
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{ RK817_GPIO_INT_CFG, 0x00, 0x02 },
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};
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#endif
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "DCDC", .driver = "rk8xx_buck"},
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{ .prefix = "LDO", .driver = "rk8xx_ldo"},
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{ .prefix = "SWITCH", .driver = "rk8xx_switch"},
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{ },
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};
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static const struct pmic_child_info power_key_info[] = {
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{ .prefix = "pwrkey", .driver = "rk8xx_pwrkey"},
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{ },
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};
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static const struct pmic_child_info rtc_info[] = {
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{ .prefix = "rtc", .driver = "rk8xx_rtc"},
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{ },
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};
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static const struct pmic_child_info fuel_gauge_info[] = {
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{ .prefix = "battery", .driver = "rk818_fg"},
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{ .prefix = "battery", .driver = "rk817_fg"},
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{ .prefix = "battery", .driver = "rk816_fg"},
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{ },
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};
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static const struct pmic_child_info rk817_codec_info[] = {
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{ .prefix = "codec", .driver = "rk817_codec"},
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{ },
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};
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static int rk8xx_reg_count(struct udevice *dev)
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{
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return RK808_NUM_OF_REGS;
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}
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static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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int ret;
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ret = dm_i2c_write(dev, reg, buff, len);
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if (ret) {
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printf("%s: write reg 0x%02x failed, ret=%d\n", __func__, reg, 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 rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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int ret;
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ret = dm_i2c_read(dev, reg, buff, len);
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if (ret) {
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printf("%s: read reg 0x%02x failed, ret=%d\n", __func__, reg, 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 rk8xx_shutdown(struct udevice *dev)
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{
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struct rk8xx_priv *priv = dev_get_priv(dev);
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u8 val, dev_off, devctrl_reg;
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int ret = 0;
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switch (priv->variant) {
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case RK808_ID:
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devctrl_reg = REG_DEVCTRL;
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dev_off = BIT(3);
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break;
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case RK805_ID:
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case RK816_ID:
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case RK818_ID:
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devctrl_reg = REG_DEVCTRL;
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dev_off = BIT(0);
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break;
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case RK809_ID:
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case RK817_ID:
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devctrl_reg = RK817_REG_SYS_CFG3;
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dev_off = BIT(0);
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break;
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default:
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printf("Unknown PMIC: RK%x\n", priv->variant);
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return -EINVAL;
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}
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ret = dm_i2c_read(dev, devctrl_reg, &val, 1);
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if (ret) {
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printf("%s: read reg 0x%02x failed, ret=%d\n", __func__, devctrl_reg, ret);
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return ret;
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}
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val |= dev_off;
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ret = dm_i2c_write(dev, devctrl_reg, &val, 1);
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if (ret) {
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printf("%s: write reg 0x%02x failed, ret=%d\n", __func__, devctrl_reg, 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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#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
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static int rk8xx_bind(struct udevice *dev)
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{
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ofnode regulators_node;
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int children;
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regulators_node = dev_read_subnode(dev, "regulators");
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if (!ofnode_valid(regulators_node)) {
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debug("%s: %s regulators subnode not found!\n", __func__,
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dev->name);
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return -ENXIO;
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}
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debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
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children = pmic_bind_children(dev, regulators_node, pmic_children_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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children = pmic_bind_children(dev, dev->node, power_key_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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children = pmic_bind_children(dev, dev->node, rtc_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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children = pmic_bind_children(dev, dev->node, fuel_gauge_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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children = pmic_bind_children(dev, dev->node, rk817_codec_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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/* Always return success for this device */
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return 0;
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}
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#endif
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static int rk8xx_probe(struct udevice *dev)
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{
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struct rk8xx_priv *priv = dev_get_priv(dev);
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struct reg_data *init_data = NULL;
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int init_data_num = 0;
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int ret = 0, i, show_variant;
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uint8_t msb, lsb, id_msb, id_lsb;
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uint8_t on_source = 0, off_source = 0;
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uint8_t power_en0, power_en1, power_en2, power_en3;
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uint8_t value;
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/* read Chip variant */
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if (device_is_compatible(dev, "rockchip,rk817") ||
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device_is_compatible(dev, "rockchip,rk809")) {
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id_msb = RK817_ID_MSB;
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id_lsb = RK817_ID_LSB;
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} else {
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id_msb = ID_MSB;
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id_lsb = ID_LSB;
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}
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ret = rk8xx_read(dev, id_msb, &msb, 1);
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if (ret)
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return ret;
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ret = rk8xx_read(dev, id_lsb, &lsb, 1);
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if (ret)
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return ret;
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priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
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show_variant = priv->variant;
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switch (priv->variant) {
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case RK808_ID:
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show_variant = 0x808; /* RK808 hardware ID is 0 */
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break;
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case RK805_ID:
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case RK816_ID:
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case RK818_ID:
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on_source = RK8XX_ON_SOURCE;
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off_source = RK8XX_OFF_SOURCE;
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break;
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case RK809_ID:
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case RK817_ID:
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on_source = RK817_ON_SOURCE;
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off_source = RK817_OFF_SOURCE;
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#ifdef CONFIG_DM_CHARGE_DISPLAY
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init_data = rk817_init_reg;
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init_data_num = ARRAY_SIZE(rk817_init_reg);
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#endif
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power_en0 = pmic_reg_read(dev, RK817_POWER_EN0);
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power_en1 = pmic_reg_read(dev, RK817_POWER_EN1);
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power_en2 = pmic_reg_read(dev, RK817_POWER_EN2);
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power_en3 = pmic_reg_read(dev, RK817_POWER_EN3);
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value = (power_en0 & 0x0f) | ((power_en1 & 0x0f) << 4);
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pmic_reg_write(dev, RK817_POWER_EN_SAVE0, value);
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value = (power_en2 & 0x0f) | ((power_en3 & 0x0f) << 4);
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pmic_reg_write(dev, RK817_POWER_EN_SAVE1, value);
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break;
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default:
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printf("Unknown PMIC: RK%x!!\n", priv->variant);
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return -EINVAL;
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}
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for (i = 0; i < init_data_num; i++) {
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ret = pmic_clrsetbits(dev,
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init_data[i].reg,
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init_data[i].mask,
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init_data[i].val);
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if (ret < 0) {
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printf("%s: i2c set reg 0x%x failed, ret=%d\n",
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__func__, init_data[i].reg, ret);
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}
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debug("%s: reg[0x%x] = 0x%x\n", __func__, init_data[i].reg,
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pmic_reg_read(dev, init_data[i].reg));
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}
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printf("PMIC: RK%x ", show_variant);
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if (on_source && off_source) {
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on_source = pmic_reg_read(dev, on_source);
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off_source = pmic_reg_read(dev, off_source);
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printf("(on=0x%02x, off=0x%02x)",
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pmic_reg_read(dev, on_source),
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pmic_reg_read(dev, off_source));
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}
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printf("\n");
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return 0;
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}
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static struct dm_pmic_ops rk8xx_ops = {
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.reg_count = rk8xx_reg_count,
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.read = rk8xx_read,
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.write = rk8xx_write,
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.shutdown = rk8xx_shutdown,
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};
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static const struct udevice_id rk8xx_ids[] = {
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{ .compatible = "rockchip,rk805" },
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{ .compatible = "rockchip,rk808" },
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{ .compatible = "rockchip,rk809" },
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{ .compatible = "rockchip,rk816" },
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{ .compatible = "rockchip,rk817" },
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{ .compatible = "rockchip,rk818" },
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{ }
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};
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U_BOOT_DRIVER(pmic_rk8xx) = {
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.name = "rk8xx pmic",
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.id = UCLASS_PMIC,
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.of_match = rk8xx_ids,
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#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
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.bind = rk8xx_bind,
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#endif
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.priv_auto_alloc_size = sizeof(struct rk8xx_priv),
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.probe = rk8xx_probe,
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.ops = &rk8xx_ops,
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};
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