linux/drivers/mfd/rk808.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* MFD core driver for Rockchip RK808/RK818
*
* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
*
* Author: Chris Zhong <zyw@rock-chips.com>
* Author: Zhang Qing <zhangqing@rock-chips.com>
*
* Copyright (C) 2016 PHYTEC Messtechnik GmbH
*
* Author: Wadim Egorov <w.egorov@phytec.de>
*/
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/rk808.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/reboot.h>
struct rk808_reg_data {
int addr;
int mask;
int value;
};
static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
{
/*
* Notes:
* - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
* we don't use that feature. It's better to cache.
* - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
* bits are cleared in case when we shutoff anyway, but better safe.
*/
switch (reg) {
case RK808_SECONDS_REG ... RK808_WEEKS_REG:
case RK808_RTC_STATUS_REG:
case RK808_VB_MON_REG:
case RK808_THERMAL_REG:
case RK808_DCDC_UV_STS_REG:
case RK808_LDO_UV_STS_REG:
case RK808_DCDC_PG_REG:
case RK808_LDO_PG_REG:
case RK808_DEVCTRL_REG:
case RK808_INT_STS_REG1:
case RK808_INT_STS_REG2:
return true;
}
return false;
}
static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
{
/*
* Notes:
* - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
* we don't use that feature. It's better to cache.
*/
switch (reg) {
case RK817_SECONDS_REG ... RK817_WEEKS_REG:
case RK817_RTC_STATUS_REG:
case RK817_CODEC_DTOP_LPT_SRST:
case RK817_GAS_GAUGE_ADC_CONFIG0 ... RK817_GAS_GAUGE_CUR_ADC_K0:
case RK817_PMIC_CHRG_STS:
case RK817_PMIC_CHRG_OUT:
case RK817_PMIC_CHRG_IN:
case RK817_INT_STS_REG0:
case RK817_INT_STS_REG1:
case RK817_INT_STS_REG2:
case RK817_SYS_STS:
return true;
}
return false;
}
static const struct regmap_config rk818_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = RK818_USB_CTRL_REG,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = rk808_is_volatile_reg,
};
static const struct regmap_config rk805_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = RK805_OFF_SOURCE_REG,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = rk808_is_volatile_reg,
};
static const struct regmap_config rk808_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = RK808_IO_POL_REG,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = rk808_is_volatile_reg,
};
static const struct regmap_config rk817_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = RK817_GPIO_INT_CFG,
.cache_type = REGCACHE_NONE,
.volatile_reg = rk817_is_volatile_reg,
};
static const struct resource rtc_resources[] = {
DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
};
static const struct resource rk817_rtc_resources[] = {
DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
};
static const struct resource rk805_key_resources[] = {
DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
};
static const struct resource rk817_pwrkey_resources[] = {
DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
};
static const struct resource rk817_charger_resources[] = {
DEFINE_RES_IRQ(RK817_IRQ_PLUG_IN),
DEFINE_RES_IRQ(RK817_IRQ_PLUG_OUT),
};
static const struct mfd_cell rk805s[] = {
{ .name = "rk808-clkout", },
{ .name = "rk808-regulator", },
{ .name = "rk805-pinctrl", },
{
.name = "rk808-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = &rtc_resources[0],
},
{ .name = "rk805-pwrkey",
.num_resources = ARRAY_SIZE(rk805_key_resources),
.resources = &rk805_key_resources[0],
},
};
static const struct mfd_cell rk808s[] = {
{ .name = "rk808-clkout", },
{ .name = "rk808-regulator", },
{
.name = "rk808-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = rtc_resources,
},
};
static const struct mfd_cell rk817s[] = {
{ .name = "rk808-clkout",},
{ .name = "rk808-regulator",},
{
.name = "rk805-pwrkey",
.num_resources = ARRAY_SIZE(rk817_pwrkey_resources),
.resources = &rk817_pwrkey_resources[0],
},
{
.name = "rk808-rtc",
.num_resources = ARRAY_SIZE(rk817_rtc_resources),
.resources = &rk817_rtc_resources[0],
},
{ .name = "rk817-codec",},
{
.name = "rk817-charger",
.num_resources = ARRAY_SIZE(rk817_charger_resources),
.resources = &rk817_charger_resources[0],
},
};
static const struct mfd_cell rk818s[] = {
{ .name = "rk808-clkout", },
{ .name = "rk808-regulator", },
{
.name = "rk808-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = rtc_resources,
},
};
static const struct rk808_reg_data rk805_pre_init_reg[] = {
{RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
RK805_BUCK1_2_ILMAX_4000MA},
{RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
RK805_BUCK1_2_ILMAX_4000MA},
{RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
RK805_BUCK3_ILMAX_3000MA},
{RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
RK805_BUCK4_ILMAX_3500MA},
{RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
{RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
};
static const struct rk808_reg_data rk808_pre_init_reg[] = {
{ RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA },
{ RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA },
{ RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
{ RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA },
{ RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA },
{ RK808_DCDC_UV_ACT_REG, BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
{ RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT |
VB_LO_SEL_3500MV },
};
static const struct rk808_reg_data rk817_pre_init_reg[] = {
{RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
/* Codec specific registers */
{ RK817_CODEC_DTOP_VUCTL, MASK_ALL, 0x03 },
{ RK817_CODEC_DTOP_VUCTIME, MASK_ALL, 0x00 },
{ RK817_CODEC_DTOP_LPT_SRST, MASK_ALL, 0x00 },
{ RK817_CODEC_DTOP_DIGEN_CLKE, MASK_ALL, 0x00 },
/* from vendor driver, CODEC_AREF_RTCFG0 not defined in data sheet */
{ RK817_CODEC_AREF_RTCFG0, MASK_ALL, 0x00 },
{ RK817_CODEC_AREF_RTCFG1, MASK_ALL, 0x06 },
{ RK817_CODEC_AADC_CFG0, MASK_ALL, 0xc8 },
/* from vendor driver, CODEC_AADC_CFG1 not defined in data sheet */
{ RK817_CODEC_AADC_CFG1, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_VOLL, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_VOLR, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_SR_ACL0, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_ALC1, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_ALC2, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_NG, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_HPF, MASK_ALL, 0x00 },
{ RK817_CODEC_DADC_RVOLL, MASK_ALL, 0xff },
{ RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
{ RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
{ RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
{ RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
/* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
{ RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
{ RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
{ RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
{ RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
{ RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
{ RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
{ RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
{ RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
{ RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
{ RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
/* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
{ RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
{ RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
{ RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
{ RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
{ RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
{ RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
{ RK817_CODEC_DDAC_RVOLR, MASK_ALL, 0xff },
{ RK817_CODEC_AHP_ANTI0, MASK_ALL, 0x00 },
{ RK817_CODEC_AHP_ANTI1, MASK_ALL, 0x00 },
{ RK817_CODEC_AHP_CFG0, MASK_ALL, 0xe0 },
{ RK817_CODEC_AHP_CFG1, MASK_ALL, 0x1f },
{ RK817_CODEC_AHP_CP, MASK_ALL, 0x09 },
{ RK817_CODEC_ACLASSD_CFG1, MASK_ALL, 0x69 },
{ RK817_CODEC_ACLASSD_CFG2, MASK_ALL, 0x44 },
{ RK817_CODEC_APLL_CFG0, MASK_ALL, 0x04 },
{ RK817_CODEC_APLL_CFG1, MASK_ALL, 0x00 },
{ RK817_CODEC_APLL_CFG2, MASK_ALL, 0x30 },
{ RK817_CODEC_APLL_CFG3, MASK_ALL, 0x19 },
{ RK817_CODEC_APLL_CFG4, MASK_ALL, 0x65 },
{ RK817_CODEC_APLL_CFG5, MASK_ALL, 0x01 },
{ RK817_CODEC_DI2S_CKM, MASK_ALL, 0x01 },
{ RK817_CODEC_DI2S_RSD, MASK_ALL, 0x00 },
{ RK817_CODEC_DI2S_RXCR1, MASK_ALL, 0x00 },
{ RK817_CODEC_DI2S_RXCR2, MASK_ALL, 0x17 },
{ RK817_CODEC_DI2S_RXCMD_TSD, MASK_ALL, 0x00 },
{ RK817_CODEC_DI2S_TXCR1, MASK_ALL, 0x00 },
{ RK817_CODEC_DI2S_TXCR2, MASK_ALL, 0x17 },
{ RK817_CODEC_DI2S_TXCR3_TXCMD, MASK_ALL, 0x00 },
{RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L},
{RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK,
RK817_HOTDIE_105 | RK817_TSD_140},
};
static const struct rk808_reg_data rk818_pre_init_reg[] = {
/* improve efficiency */
{ RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA },
{ RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA },
{ RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
{ RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK,
RK818_USB_ILMIN_2000MA },
/* close charger when usb lower then 3.4V */
{ RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK,
(0x7 << 4) },
/* no action when vref */
{ RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL },
/* enable HDMI 5V */
{ RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN },
{ RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT |
VB_LO_SEL_3500MV },
};
static const struct regmap_irq rk805_irqs[] = {
[RK805_IRQ_PWRON_RISE] = {
.mask = RK805_IRQ_PWRON_RISE_MSK,
.reg_offset = 0,
},
[RK805_IRQ_VB_LOW] = {
.mask = RK805_IRQ_VB_LOW_MSK,
.reg_offset = 0,
},
[RK805_IRQ_PWRON] = {
.mask = RK805_IRQ_PWRON_MSK,
.reg_offset = 0,
},
[RK805_IRQ_PWRON_LP] = {
.mask = RK805_IRQ_PWRON_LP_MSK,
.reg_offset = 0,
},
[RK805_IRQ_HOTDIE] = {
.mask = RK805_IRQ_HOTDIE_MSK,
.reg_offset = 0,
},
[RK805_IRQ_RTC_ALARM] = {
.mask = RK805_IRQ_RTC_ALARM_MSK,
.reg_offset = 0,
},
[RK805_IRQ_RTC_PERIOD] = {
.mask = RK805_IRQ_RTC_PERIOD_MSK,
.reg_offset = 0,
},
[RK805_IRQ_PWRON_FALL] = {
.mask = RK805_IRQ_PWRON_FALL_MSK,
.reg_offset = 0,
},
};
static const struct regmap_irq rk808_irqs[] = {
/* INT_STS */
[RK808_IRQ_VOUT_LO] = {
.mask = RK808_IRQ_VOUT_LO_MSK,
.reg_offset = 0,
},
[RK808_IRQ_VB_LO] = {
.mask = RK808_IRQ_VB_LO_MSK,
.reg_offset = 0,
},
[RK808_IRQ_PWRON] = {
.mask = RK808_IRQ_PWRON_MSK,
.reg_offset = 0,
},
[RK808_IRQ_PWRON_LP] = {
.mask = RK808_IRQ_PWRON_LP_MSK,
.reg_offset = 0,
},
[RK808_IRQ_HOTDIE] = {
.mask = RK808_IRQ_HOTDIE_MSK,
.reg_offset = 0,
},
[RK808_IRQ_RTC_ALARM] = {
.mask = RK808_IRQ_RTC_ALARM_MSK,
.reg_offset = 0,
},
[RK808_IRQ_RTC_PERIOD] = {
.mask = RK808_IRQ_RTC_PERIOD_MSK,
.reg_offset = 0,
},
/* INT_STS2 */
[RK808_IRQ_PLUG_IN_INT] = {
.mask = RK808_IRQ_PLUG_IN_INT_MSK,
.reg_offset = 1,
},
[RK808_IRQ_PLUG_OUT_INT] = {
.mask = RK808_IRQ_PLUG_OUT_INT_MSK,
.reg_offset = 1,
},
};
static const struct regmap_irq rk818_irqs[] = {
/* INT_STS */
[RK818_IRQ_VOUT_LO] = {
.mask = RK818_IRQ_VOUT_LO_MSK,
.reg_offset = 0,
},
[RK818_IRQ_VB_LO] = {
.mask = RK818_IRQ_VB_LO_MSK,
.reg_offset = 0,
},
[RK818_IRQ_PWRON] = {
.mask = RK818_IRQ_PWRON_MSK,
.reg_offset = 0,
},
[RK818_IRQ_PWRON_LP] = {
.mask = RK818_IRQ_PWRON_LP_MSK,
.reg_offset = 0,
},
[RK818_IRQ_HOTDIE] = {
.mask = RK818_IRQ_HOTDIE_MSK,
.reg_offset = 0,
},
[RK818_IRQ_RTC_ALARM] = {
.mask = RK818_IRQ_RTC_ALARM_MSK,
.reg_offset = 0,
},
[RK818_IRQ_RTC_PERIOD] = {
.mask = RK818_IRQ_RTC_PERIOD_MSK,
.reg_offset = 0,
},
[RK818_IRQ_USB_OV] = {
.mask = RK818_IRQ_USB_OV_MSK,
.reg_offset = 0,
},
/* INT_STS2 */
[RK818_IRQ_PLUG_IN] = {
.mask = RK818_IRQ_PLUG_IN_MSK,
.reg_offset = 1,
},
[RK818_IRQ_PLUG_OUT] = {
.mask = RK818_IRQ_PLUG_OUT_MSK,
.reg_offset = 1,
},
[RK818_IRQ_CHG_OK] = {
.mask = RK818_IRQ_CHG_OK_MSK,
.reg_offset = 1,
},
[RK818_IRQ_CHG_TE] = {
.mask = RK818_IRQ_CHG_TE_MSK,
.reg_offset = 1,
},
[RK818_IRQ_CHG_TS1] = {
.mask = RK818_IRQ_CHG_TS1_MSK,
.reg_offset = 1,
},
[RK818_IRQ_TS2] = {
.mask = RK818_IRQ_TS2_MSK,
.reg_offset = 1,
},
[RK818_IRQ_CHG_CVTLIM] = {
.mask = RK818_IRQ_CHG_CVTLIM_MSK,
.reg_offset = 1,
},
[RK818_IRQ_DISCHG_ILIM] = {
.mask = RK818_IRQ_DISCHG_ILIM_MSK,
.reg_offset = 1,
},
};
static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = {
REGMAP_IRQ_REG_LINE(0, 8),
REGMAP_IRQ_REG_LINE(1, 8),
REGMAP_IRQ_REG_LINE(2, 8),
REGMAP_IRQ_REG_LINE(3, 8),
REGMAP_IRQ_REG_LINE(4, 8),
REGMAP_IRQ_REG_LINE(5, 8),
REGMAP_IRQ_REG_LINE(6, 8),
REGMAP_IRQ_REG_LINE(7, 8),
REGMAP_IRQ_REG_LINE(8, 8),
REGMAP_IRQ_REG_LINE(9, 8),
REGMAP_IRQ_REG_LINE(10, 8),
REGMAP_IRQ_REG_LINE(11, 8),
REGMAP_IRQ_REG_LINE(12, 8),
REGMAP_IRQ_REG_LINE(13, 8),
REGMAP_IRQ_REG_LINE(14, 8),
REGMAP_IRQ_REG_LINE(15, 8),
REGMAP_IRQ_REG_LINE(16, 8),
REGMAP_IRQ_REG_LINE(17, 8),
REGMAP_IRQ_REG_LINE(18, 8),
REGMAP_IRQ_REG_LINE(19, 8),
REGMAP_IRQ_REG_LINE(20, 8),
REGMAP_IRQ_REG_LINE(21, 8),
REGMAP_IRQ_REG_LINE(22, 8),
REGMAP_IRQ_REG_LINE(23, 8)
};
static struct regmap_irq_chip rk805_irq_chip = {
.name = "rk805",
.irqs = rk805_irqs,
.num_irqs = ARRAY_SIZE(rk805_irqs),
.num_regs = 1,
.status_base = RK805_INT_STS_REG,
.mask_base = RK805_INT_STS_MSK_REG,
.ack_base = RK805_INT_STS_REG,
.init_ack_masked = true,
};
static const struct regmap_irq_chip rk808_irq_chip = {
.name = "rk808",
.irqs = rk808_irqs,
.num_irqs = ARRAY_SIZE(rk808_irqs),
.num_regs = 2,
.irq_reg_stride = 2,
.status_base = RK808_INT_STS_REG1,
.mask_base = RK808_INT_STS_MSK_REG1,
.ack_base = RK808_INT_STS_REG1,
.init_ack_masked = true,
};
static struct regmap_irq_chip rk817_irq_chip = {
.name = "rk817",
.irqs = rk817_irqs,
.num_irqs = ARRAY_SIZE(rk817_irqs),
.num_regs = 3,
.irq_reg_stride = 2,
.status_base = RK817_INT_STS_REG0,
.mask_base = RK817_INT_STS_MSK_REG0,
.ack_base = RK817_INT_STS_REG0,
.init_ack_masked = true,
};
static const struct regmap_irq_chip rk818_irq_chip = {
.name = "rk818",
.irqs = rk818_irqs,
.num_irqs = ARRAY_SIZE(rk818_irqs),
.num_regs = 2,
.irq_reg_stride = 2,
.status_base = RK818_INT_STS_REG1,
.mask_base = RK818_INT_STS_MSK_REG1,
.ack_base = RK818_INT_STS_REG1,
.init_ack_masked = true,
};
static struct i2c_client *rk808_i2c_client;
static void rk808_pm_power_off(void)
{
int ret;
unsigned int reg, bit;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
switch (rk808->variant) {
case RK805_ID:
reg = RK805_DEV_CTRL_REG;
bit = DEV_OFF;
break;
case RK808_ID:
reg = RK808_DEVCTRL_REG,
bit = DEV_OFF_RST;
break;
case RK809_ID:
case RK817_ID:
reg = RK817_SYS_CFG(3);
bit = DEV_OFF;
break;
case RK818_ID:
reg = RK818_DEVCTRL_REG;
bit = DEV_OFF;
break;
default:
return;
}
ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
static int rk808_restart_notify(struct notifier_block *this, unsigned long mode, void *cmd)
{
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
unsigned int reg, bit;
int ret;
switch (rk808->variant) {
case RK809_ID:
case RK817_ID:
reg = RK817_SYS_CFG(3);
bit = DEV_RST;
break;
default:
return NOTIFY_DONE;
}
ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to restart device!\n");
return NOTIFY_DONE;
}
static struct notifier_block rk808_restart_handler = {
.notifier_call = rk808_restart_notify,
.priority = 192,
};
static void rk8xx_shutdown(struct i2c_client *client)
{
struct rk808 *rk808 = i2c_get_clientdata(client);
int ret;
switch (rk808->variant) {
case RK805_ID:
ret = regmap_update_bits(rk808->regmap,
RK805_GPIO_IO_POL_REG,
SLP_SD_MSK,
SHUTDOWN_FUN);
break;
case RK809_ID:
case RK817_ID:
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPIN_FUNC_MSK,
SLPPIN_DN_FUN);
break;
default:
return;
}
if (ret)
dev_warn(&client->dev,
"Cannot switch to power down function\n");
}
static const struct of_device_id rk808_of_match[] = {
{ .compatible = "rockchip,rk805" },
{ .compatible = "rockchip,rk808" },
{ .compatible = "rockchip,rk809" },
{ .compatible = "rockchip,rk817" },
{ .compatible = "rockchip,rk818" },
{ },
};
MODULE_DEVICE_TABLE(of, rk808_of_match);
static int rk808_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device_node *np = client->dev.of_node;
struct rk808 *rk808;
const struct rk808_reg_data *pre_init_reg;
const struct mfd_cell *cells;
int nr_pre_init_regs;
int nr_cells;
int msb, lsb;
unsigned char pmic_id_msb, pmic_id_lsb;
int ret;
int i;
rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
if (!rk808)
return -ENOMEM;
if (of_device_is_compatible(np, "rockchip,rk817") ||
of_device_is_compatible(np, "rockchip,rk809")) {
pmic_id_msb = RK817_ID_MSB;
pmic_id_lsb = RK817_ID_LSB;
} else {
pmic_id_msb = RK808_ID_MSB;
pmic_id_lsb = RK808_ID_LSB;
}
/* Read chip variant */
msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
if (msb < 0) {
dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
RK808_ID_MSB);
return msb;
}
lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
if (lsb < 0) {
dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
RK808_ID_LSB);
return lsb;
}
rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
switch (rk808->variant) {
case RK805_ID:
rk808->regmap_cfg = &rk805_regmap_config;
rk808->regmap_irq_chip = &rk805_irq_chip;
pre_init_reg = rk805_pre_init_reg;
nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
cells = rk805s;
nr_cells = ARRAY_SIZE(rk805s);
break;
case RK808_ID:
rk808->regmap_cfg = &rk808_regmap_config;
rk808->regmap_irq_chip = &rk808_irq_chip;
pre_init_reg = rk808_pre_init_reg;
nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
cells = rk808s;
nr_cells = ARRAY_SIZE(rk808s);
break;
case RK818_ID:
rk808->regmap_cfg = &rk818_regmap_config;
rk808->regmap_irq_chip = &rk818_irq_chip;
pre_init_reg = rk818_pre_init_reg;
nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
cells = rk818s;
nr_cells = ARRAY_SIZE(rk818s);
break;
case RK809_ID:
case RK817_ID:
rk808->regmap_cfg = &rk817_regmap_config;
rk808->regmap_irq_chip = &rk817_irq_chip;
pre_init_reg = rk817_pre_init_reg;
nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
cells = rk817s;
nr_cells = ARRAY_SIZE(rk817s);
break;
default:
dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
rk808->variant);
return -EINVAL;
}
rk808->i2c = client;
i2c_set_clientdata(client, rk808);
rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
if (IS_ERR(rk808->regmap)) {
dev_err(&client->dev, "regmap initialization failed\n");
return PTR_ERR(rk808->regmap);
}
if (!client->irq) {
dev_err(&client->dev, "No interrupt support, no core IRQ\n");
return -EINVAL;
}
ret = regmap_add_irq_chip(rk808->regmap, client->irq,
IRQF_ONESHOT, -1,
rk808->regmap_irq_chip, &rk808->irq_data);
if (ret) {
dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
return ret;
}
for (i = 0; i < nr_pre_init_regs; i++) {
ret = regmap_update_bits(rk808->regmap,
pre_init_reg[i].addr,
pre_init_reg[i].mask,
pre_init_reg[i].value);
if (ret) {
dev_err(&client->dev,
"0x%x write err\n",
pre_init_reg[i].addr);
return ret;
}
}
ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
cells, nr_cells, NULL, 0,
regmap_irq_get_domain(rk808->irq_data));
if (ret) {
dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
goto err_irq;
}
if (of_property_read_bool(np, "rockchip,system-power-controller")) {
rk808_i2c_client = client;
pm_power_off = rk808_pm_power_off;
switch (rk808->variant) {
case RK809_ID:
case RK817_ID:
ret = register_restart_handler(&rk808_restart_handler);
if (ret)
dev_warn(&client->dev, "failed to register rst handler, %d\n", ret);
break;
default:
dev_dbg(&client->dev, "pmic controlled board reset not supported\n");
break;
}
}
return 0;
err_irq:
regmap_del_irq_chip(client->irq, rk808->irq_data);
return ret;
}
i2c: Make remove callback return void The value returned by an i2c driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com> Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au> Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Crt Mori <cmo@melexis.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013 Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/* Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5 Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860 Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power Acked-by: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-15 08:02:30 +00:00
static void rk808_remove(struct i2c_client *client)
{
struct rk808 *rk808 = i2c_get_clientdata(client);
regmap_del_irq_chip(client->irq, rk808->irq_data);
/**
* pm_power_off may points to a function from another module.
* Check if the pointer is set by us and only then overwrite it.
*/
if (pm_power_off == rk808_pm_power_off)
pm_power_off = NULL;
unregister_restart_handler(&rk808_restart_handler);
}
static int __maybe_unused rk8xx_suspend(struct device *dev)
{
struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
int ret = 0;
switch (rk808->variant) {
case RK805_ID:
ret = regmap_update_bits(rk808->regmap,
RK805_GPIO_IO_POL_REG,
SLP_SD_MSK,
SLEEP_FUN);
break;
case RK809_ID:
case RK817_ID:
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPIN_FUNC_MSK,
SLPPIN_SLP_FUN);
break;
default:
break;
}
return ret;
}
static int __maybe_unused rk8xx_resume(struct device *dev)
{
struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
int ret = 0;
switch (rk808->variant) {
case RK809_ID:
case RK817_ID:
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPIN_FUNC_MSK,
SLPPIN_NULL_FUN);
break;
default:
break;
}
return ret;
}
static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);
static struct i2c_driver rk808_i2c_driver = {
.driver = {
.name = "rk808",
.of_match_table = rk808_of_match,
.pm = &rk8xx_pm_ops,
},
.probe = rk808_probe,
.remove = rk808_remove,
.shutdown = rk8xx_shutdown,
};
module_i2c_driver(rk808_i2c_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
MODULE_DESCRIPTION("RK808/RK818 PMIC driver");