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mfd: rk808: Add RK817 and RK809 support

소스 검색 
The RK809 and RK817 are a Power Management IC (PMIC) for multimedia
and handheld devices. They contains the following components:
  - Regulators
  - RTC
  - Clocking

Both RK809 and RK817 chips are using a similar register map,
so we can reuse the RTC and Clocking functionality.
Most of regulators have a some implementation also.

Signed-off-by: Tony Xie <tony.xie@rock-chips.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Tony Xie
2019-06-21 06:32:54 -04:00
committed by Lee Jones
부모 a188339ca5
커밋 586c1b4125
3개의 변경된 파일과 364개의 추가작업 그리고 6개의 파일을 삭제
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192
drivers/mfd/rk808.c
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@@ -27,6 +27,7 @@
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/syscore_ops.h>
struct rk808_reg_data {
int addr;
@@ -62,6 +63,27 @@ static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
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,
@@ -86,6 +108,14 @@ static const struct regmap_config rk808_regmap_config = {
.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,
@@ -94,6 +124,10 @@ static struct resource rtc_resources[] = {
}
};
static struct resource rk817_rtc_resources[] = {
DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
};
static struct resource rk805_key_resources[] = {
{
.start = RK805_IRQ_PWRON_FALL,
@@ -107,6 +141,11 @@ static struct resource rk805_key_resources[] = {
}
};
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", },
@@ -132,6 +171,21 @@ static const struct mfd_cell rk808s[] = {
},
};
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", },
@@ -167,6 +221,13 @@ static const struct rk808_reg_data rk808_pre_init_reg[] = {
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 },
@@ -332,6 +393,33 @@ static const struct regmap_irq rk818_irqs[] = {
},
};
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,
@@ -355,6 +443,18 @@ static const struct regmap_irq_chip rk808_irq_chip = {
.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,
@@ -423,9 +523,33 @@ static void rk818_device_shutdown(void)
dev_err(&rk808_i2c_client->dev, "power off error!\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" },
{ },
};
@@ -438,10 +562,11 @@ static int rk808_probe(struct i2c_client *client,
struct rk808 *rk808;
const struct rk808_reg_data *pre_init_reg;
const struct mfd_cell *cells;
void (*pm_pwroff_fn)(void);
void (*pm_pwroff_fn)(void) = NULL;
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;
@@ -449,15 +574,24 @@ static int rk808_probe(struct i2c_client *client,
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, RK808_ID_MSB);
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, RK808_ID_LSB);
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);
@@ -495,6 +629,16 @@ static int rk808_probe(struct i2c_client *client,
nr_cells = ARRAY_SIZE(rk818s);
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);
@@ -568,10 +712,52 @@ static int rk808_remove(struct i2c_client *client)
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,