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linux_old1/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/syscore_ops.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_INT_STS_REG0:
case RK817_INT_STS_REG1:
case RK817_INT_STS_REG2:
case RK817_SYS_STS:
return true;
}
return true;
}
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 struct resource rtc_resources[] = {
{
.start = RK808_IRQ_RTC_ALARM,
.end = RK808_IRQ_RTC_ALARM,
.flags = IORESOURCE_IRQ,
}
};
static struct resource rk817_rtc_resources[] = {
DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
};
static struct resource rk805_key_resources[] = {
{
.start = RK805_IRQ_PWRON_FALL,
.end = RK805_IRQ_PWRON_FALL,
.flags = IORESOURCE_IRQ,
},
{
.start = RK805_IRQ_PWRON_RISE,
.end = RK805_IRQ_PWRON_RISE,
.flags = IORESOURCE_IRQ,
}
};
static struct resource rk817_pwrkey_resources[] = {
DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
};
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 = "rk8xx-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],
},
};
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_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN},
{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},
{RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_H},
{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 rk805_device_shutdown(void)
{
int ret;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
if (!rk808)
return;
ret = regmap_update_bits(rk808->regmap,
RK805_DEV_CTRL_REG,
DEV_OFF, DEV_OFF);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
static void rk805_device_shutdown_prepare(void)
{
int ret;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
if (!rk808)
return;
ret = regmap_update_bits(rk808->regmap,
RK805_GPIO_IO_POL_REG,
SLP_SD_MSK, SHUTDOWN_FUN);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
static void rk808_device_shutdown(void)
{
int ret;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
if (!rk808)
return;
ret = regmap_update_bits(rk808->regmap,
RK808_DEVCTRL_REG,
DEV_OFF_RST, DEV_OFF_RST);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
static void rk818_device_shutdown(void)
{
int ret;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
if (!rk808)
return;
ret = regmap_update_bits(rk808->regmap,
RK818_DEVCTRL_REG,
DEV_OFF, DEV_OFF);
if (ret)
dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}
static void rk8xx_syscore_shutdown(void)
{
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
int ret;
if (system_state == SYSTEM_POWER_OFF &&
(rk808->variant == RK809_ID || rk808->variant == RK817_ID)) {
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPIN_FUNC_MSK,
SLPPIN_DN_FUN);
if (ret) {
dev_warn(&rk808_i2c_client->dev,
"Cannot switch to power down function\n");
}
}
}
static struct syscore_ops rk808_syscore_ops = {
.shutdown = rk8xx_syscore_shutdown,
};
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 pm_off = 0, 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);
rk808->pm_pwroff_fn = rk805_device_shutdown;
rk808->pm_pwroff_prep_fn = rk805_device_shutdown_prepare;
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);
rk808->pm_pwroff_fn = rk808_device_shutdown;
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);
rk808->pm_pwroff_fn = rk818_device_shutdown;
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);
register_syscore_ops(&rk808_syscore_ops);
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;
}
pm_off = of_property_read_bool(np,
"rockchip,system-power-controller");
if (pm_off && !pm_power_off) {
rk808_i2c_client = client;
pm_power_off = rk808->pm_pwroff_fn;
}
if (pm_off && !pm_power_off_prepare) {
if (!rk808_i2c_client)
rk808_i2c_client = client;
pm_power_off_prepare = rk808->pm_pwroff_prep_fn;
}
return 0;
err_irq:
regmap_del_irq_chip(client->irq, rk808->irq_data);
return ret;
}
static int 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 (rk808->pm_pwroff_fn && pm_power_off == rk808->pm_pwroff_fn)
pm_power_off = NULL;
/**
* As above, check if the pointer is set by us before overwrite.
*/
if (rk808->pm_pwroff_prep_fn &&
pm_power_off_prepare == rk808->pm_pwroff_prep_fn)
pm_power_off_prepare = NULL;
return 0;
}
static int rk8xx_suspend(struct device *dev)
{
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
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_SLP_FUN);
break;
default:
break;
}
return ret;
}
static int rk8xx_resume(struct device *dev)
{
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
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;
}
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,
};
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");
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