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-rw-r--r--drivers/mfd/Kconfig6
-rw-r--r--drivers/mfd/rk808.c192
2 files changed, 192 insertions, 6 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 294d9567cc71..0b7db542e478 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1030,14 +1030,14 @@ config MFD_RC5T583
different functionality of the device.
config MFD_RK808
- tristate "Rockchip RK805/RK808/RK818 Power Management Chip"
+ tristate "Rockchip RK805/RK808/RK809/RK817/RK818 Power Management Chip"
depends on I2C && OF
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
help
- If you say yes here you get support for the RK805, RK808 and RK818
- Power Management chips.
+ If you say yes here you get support for the RK805, RK808, RK809,
+ RK817 and RK818 Power Management chips.
This driver provides common support for accessing the device
through I2C interface. The device supports multiple sub-devices
including interrupts, RTC, LDO & DCDC regulators, and onkey.
diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
index 94377782d208..6ee1c461a3bb 100644
--- a/drivers/mfd/rk808.c
+++ b/drivers/mfd/rk808.c
@@ -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,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 08:47:15 +0000