Split rk808 into a core and an i2c part in preperation for
SPI support.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
drivers/mfd/Kconfig | 5 +
drivers/mfd/Makefile | 3 +-
drivers/mfd/{rk808.c => rk8xx-core.c} | 200 +++++--------------------
drivers/mfd/rk8xx-i2c.c | 203 ++++++++++++++++++++++++++
include/linux/mfd/rk808.h | 6 +
5 files changed, 249 insertions(+), 168 deletions(-)
rename drivers/mfd/{rk808.c => rk8xx-core.c} (76%)
create mode 100644 drivers/mfd/rk8xx-i2c.c
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index abb58ab1a1a4..acb7133d6db6 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1143,11 +1143,16 @@ config MFD_RC5T583
different functionality of the device.
config MFD_RK808
+ bool
+ select MFD_CORE
+
+config MFD_RK8XX_I2C
tristate "Rockchip RK805/RK808/RK809/RK817/RK818 Power Management Chip"
depends on I2C && OF
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
+ select MFD_RK808
help
If you say yes here you get support for the RK805, RK808, RK809,
RK817 and RK818 Power Management chips.
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 858cacf659d6..25ac617a5e6b 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -215,7 +215,8 @@ obj-$(CONFIG_MFD_PALMAS) += palmas.o
obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o
obj-$(CONFIG_MFD_NTXEC) += ntxec.o
obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o
-obj-$(CONFIG_MFD_RK808) += rk808.o
+obj-$(CONFIG_MFD_RK808) += rk8xx-core.o
+obj-$(CONFIG_MFD_RK8XX_I2C) += rk8xx-i2c.o
obj-$(CONFIG_MFD_RN5T618) += rn5t618.o
obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o
obj-$(CONFIG_MFD_SYSCON) += syscon.o
diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk8xx-core.c
similarity index 76%
rename from drivers/mfd/rk808.c
rename to drivers/mfd/rk8xx-core.c
index 518c6deec4b1..d0ce17d98fdc 100644
--- a/drivers/mfd/rk808.c
+++ b/drivers/mfd/rk8xx-core.c
@@ -12,7 +12,6 @@
* 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>
@@ -27,88 +26,6 @@ struct rk808_reg_data {
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_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 const struct resource rtc_resources[] = {
DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
};
@@ -584,9 +501,9 @@ static int rk808_restart(struct sys_off_data *data)
return NOTIFY_DONE;
}
-static void rk8xx_shutdown(struct i2c_client *client)
+void rk8xx_shutdown(struct device *dev)
{
- struct rk808 *rk808 = i2c_get_clientdata(client);
+ struct rk808 *rk808 = dev_get_drvdata(dev);
int ret;
switch (rk808->variant) {
@@ -607,62 +524,31 @@ static void rk8xx_shutdown(struct i2c_client *client)
return;
}
if (ret)
- dev_warn(&client->dev,
+ dev_warn(dev,
"Cannot switch to power down function\n");
}
+EXPORT_SYMBOL_GPL(rk8xx_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)
+int rk8xx_probe(struct device *dev, int variant, unsigned int irq, struct regmap *regmap)
{
- 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);
+ rk808 = devm_kzalloc(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)
- return dev_err_probe(&client->dev, msb, "failed to read the chip id MSB\n");
-
- lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
- if (lsb < 0)
- return dev_err_probe(&client->dev, lsb, "failed to read the chip id LSB\n");
-
- rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
- dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
+ rk808->dev = dev;
+ rk808->variant = variant;
+ rk808->regmap = regmap;
+ dev_set_drvdata(dev, rk808);
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);
@@ -670,7 +556,6 @@ static int rk808_probe(struct i2c_client *client,
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);
@@ -678,7 +563,6 @@ static int rk808_probe(struct i2c_client *client,
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);
@@ -687,7 +571,6 @@ static int rk808_probe(struct i2c_client *client,
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);
@@ -695,27 +578,20 @@ static int rk808_probe(struct i2c_client *client,
nr_cells = ARRAY_SIZE(rk817s);
break;
default:
- dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
- rk808->variant);
+ dev_err(dev, "Unsupported RK8XX ID %lu\n", rk808->variant);
return -EINVAL;
}
- rk808->dev = &client->dev;
- i2c_set_clientdata(client, rk808);
+ dev_info(dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
- rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
- if (IS_ERR(rk808->regmap))
- return dev_err_probe(&client->dev, PTR_ERR(rk808->regmap),
- "regmap initialization failed\n");
+ if (!irq)
+ return dev_err_probe(dev, -EINVAL, "No interrupt support, no core IRQ\n");
- if (!client->irq)
- return dev_err_probe(&client->dev, -EINVAL, "No interrupt support, no core IRQ\n");
-
- ret = devm_regmap_add_irq_chip(&client->dev, rk808->regmap, client->irq,
+ ret = devm_regmap_add_irq_chip(dev, rk808->regmap, irq,
IRQF_ONESHOT, -1,
rk808->regmap_irq_chip, &rk808->irq_data);
if (ret)
- return dev_err_probe(&client->dev, ret, "Failed to add irq_chip\n");
+ return dev_err_probe(dev, ret, "Failed to add irq_chip\n");
for (i = 0; i < nr_pre_init_regs; i++) {
ret = regmap_update_bits(rk808->regmap,
@@ -723,45 +599,46 @@ static int rk808_probe(struct i2c_client *client,
pre_init_reg[i].mask,
pre_init_reg[i].value);
if (ret)
- return dev_err_probe(&client->dev, ret, "0x%x write err\n",
+ return dev_err_probe(dev, ret, "0x%x write err\n",
pre_init_reg[i].addr);
}
- ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
+ ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,
cells, nr_cells, NULL, 0,
regmap_irq_get_domain(rk808->irq_data));
if (ret)
- return dev_err_probe(&client->dev, ret, "failed to add MFD devices\n");
+ return dev_err_probe(dev, ret, "failed to add MFD devices\n");
- if (of_property_read_bool(np, "rockchip,system-power-controller")) {
- ret = devm_register_sys_off_handler(&client->dev,
+ if (device_property_read_bool(dev, "rockchip,system-power-controller")) {
+ ret = devm_register_sys_off_handler(dev,
SYS_OFF_MODE_POWER_OFF_PREPARE, SYS_OFF_PRIO_HIGH,
&rk808_power_off, rk808);
if (ret)
- return dev_err_probe(&client->dev, ret,
+ return dev_err_probe(dev, ret,
"failed to register poweroff handler\n");
switch (rk808->variant) {
case RK809_ID:
case RK817_ID:
- ret = devm_register_sys_off_handler(&client->dev,
+ ret = devm_register_sys_off_handler(dev,
SYS_OFF_MODE_RESTART, SYS_OFF_PRIO_HIGH,
&rk808_restart, rk808);
if (ret)
- dev_warn(&client->dev, "failed to register rst handler, %d\n", ret);
+ dev_warn(dev, "failed to register rst handler, %d\n", ret);
break;
default:
- dev_dbg(&client->dev, "pmic controlled board reset not supported\n");
+ dev_dbg(dev, "pmic controlled board reset not supported\n");
break;
}
}
return 0;
}
+EXPORT_SYMBOL_GPL(rk8xx_probe);
-static int __maybe_unused rk8xx_suspend(struct device *dev)
+int rk8xx_suspend(struct device *dev)
{
- struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
+ struct rk808 *rk808 = dev_get_drvdata(dev);
int ret = 0;
switch (rk808->variant) {
@@ -784,10 +661,11 @@ static int __maybe_unused rk8xx_suspend(struct device *dev)
return ret;
}
+EXPORT_SYMBOL_GPL(rk8xx_suspend);
-static int __maybe_unused rk8xx_resume(struct device *dev)
+int rk8xx_resume(struct device *dev)
{
- struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
+ struct rk808 *rk808 = dev_get_drvdata(dev);
int ret = 0;
switch (rk808->variant) {
@@ -804,22 +682,10 @@ static int __maybe_unused rk8xx_resume(struct device *dev)
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,
- .shutdown = rk8xx_shutdown,
-};
-
-module_i2c_driver(rk808_i2c_driver);
+EXPORT_SYMBOL_GPL(rk8xx_resume);
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");
+MODULE_DESCRIPTION("RK8xx PMIC core");
diff --git a/drivers/mfd/rk8xx-i2c.c b/drivers/mfd/rk8xx-i2c.c
new file mode 100644
index 000000000000..325d0e519325
--- /dev/null
+++ b/drivers/mfd/rk8xx-i2c.c
@@ -0,0 +1,203 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * MFD i2c 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/mfd/rk808.h>
+
+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_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 int rk8xx_i2c_get_variant(struct i2c_client *client)
+{
+ u8 pmic_id_msb, pmic_id_lsb;
+ int msb, lsb;
+
+ if (of_device_is_compatible(client->dev.of_node, "rockchip,rk817") ||
+ of_device_is_compatible(client->dev.of_node, "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)
+ return dev_err_probe(&client->dev, msb, "failed to read the chip id MSB\n");
+
+ lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
+ if (lsb < 0)
+ return dev_err_probe(&client->dev, lsb, "failed to read the chip id LSB\n");
+
+ return ((msb << 8) | lsb) & RK8XX_ID_MSK;
+}
+
+static int rk8xx_i2c_probe(struct i2c_client *client)
+{
+ const struct regmap_config *regmap_cfg;
+ struct regmap *regmap;
+ int variant;
+
+ variant = rk8xx_i2c_get_variant(client);
+ if (variant < 0)
+ return variant;
+
+ switch (variant) {
+ case RK805_ID:
+ regmap_cfg = &rk805_regmap_config;
+ break;
+ case RK808_ID:
+ regmap_cfg = &rk808_regmap_config;
+ break;
+ case RK818_ID:
+ regmap_cfg = &rk818_regmap_config;
+ break;
+ case RK809_ID:
+ case RK817_ID:
+ regmap_cfg = &rk817_regmap_config;
+ break;
+ default:
+ return dev_err_probe(&client->dev, -EINVAL, "Unsupported RK8XX ID %x\n", variant);
+ }
+
+ regmap = devm_regmap_init_i2c(client, regmap_cfg);
+ if (IS_ERR(regmap))
+ return dev_err_probe(&client->dev, PTR_ERR(regmap),
+ "regmap initialization failed\n");
+
+ return rk8xx_probe(&client->dev, variant, client->irq, regmap);
+}
+
+static void rk8xx_i2c_shutdown(struct i2c_client *client)
+{
+ rk8xx_shutdown(&client->dev);
+}
+
+static int __maybe_unused rk8xx_i2c_suspend(struct device *dev)
+{
+ return rk8xx_suspend(dev);
+}
+
+static int __maybe_unused rk8xx_i2c_resume(struct device *dev)
+{
+ return rk8xx_resume(dev);
+}
+static SIMPLE_DEV_PM_OPS(rk8xx_i2c_pm_ops, rk8xx_i2c_suspend, rk8xx_i2c_resume);
+
+static const struct of_device_id rk8xx_i2c_of_match[] = {
+ { .compatible = "rockchip,rk805" },
+ { .compatible = "rockchip,rk808" },
+ { .compatible = "rockchip,rk809" },
+ { .compatible = "rockchip,rk817" },
+ { .compatible = "rockchip,rk818" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, rk8xx_i2c_of_match);
+
+static struct i2c_driver rk8xx_i2c_driver = {
+ .driver = {
+ .name = "rk8xx-i2c",
+ .of_match_table = rk8xx_i2c_of_match,
+ .pm = &rk8xx_i2c_pm_ops,
+ },
+ .probe_new = rk8xx_i2c_probe,
+ .shutdown = rk8xx_i2c_shutdown,
+};
+module_i2c_driver(rk8xx_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("RK8xx I2C PMIC driver");
diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h
index 9937b068fa82..c5ddfb0e5353 100644
--- a/include/linux/mfd/rk808.h
+++ b/include/linux/mfd/rk808.h
@@ -703,4 +703,10 @@ struct rk808 {
const struct regmap_config *regmap_cfg;
const struct regmap_irq_chip *regmap_irq_chip;
};
+
+void rk8xx_shutdown(struct device *dev);
+int rk8xx_probe(struct device *dev, int variant, unsigned int irq, struct regmap *regmap);
+int rk8xx_suspend(struct device *dev);
+int rk8xx_resume(struct device *dev);
+
#endif /* __LINUX_REGULATOR_RK808_H */
--
2.35.1On Fri, 09 Sep 2022, Sebastian Reichel wrote:
> Split rk808 into a core and an i2c part in preperation for
> SPI support.
>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
> ---
> drivers/mfd/Kconfig | 5 +
> drivers/mfd/Makefile | 3 +-
> drivers/mfd/{rk808.c => rk8xx-core.c} | 200 +++++--------------------
> drivers/mfd/rk8xx-i2c.c | 203 ++++++++++++++++++++++++++
> include/linux/mfd/rk808.h | 6 +
> 5 files changed, 249 insertions(+), 168 deletions(-)
> rename drivers/mfd/{rk808.c => rk8xx-core.c} (76%)
> create mode 100644 drivers/mfd/rk8xx-i2c.c
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index abb58ab1a1a4..acb7133d6db6 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1143,11 +1143,16 @@ config MFD_RC5T583
> different functionality of the device.
>
> config MFD_RK808
> + bool
> + select MFD_CORE
> +
> +config MFD_RK8XX_I2C
> tristate "Rockchip RK805/RK808/RK809/RK817/RK818 Power Management Chip"
> depends on I2C && OF
> select MFD_CORE
> select REGMAP_I2C
> select REGMAP_IRQ
> + select MFD_RK808
> help
> If you say yes here you get support for the RK805, RK808, RK809,
> RK817 and RK818 Power Management chips.
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 858cacf659d6..25ac617a5e6b 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -215,7 +215,8 @@ obj-$(CONFIG_MFD_PALMAS) += palmas.o
> obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o
> obj-$(CONFIG_MFD_NTXEC) += ntxec.o
> obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o
> -obj-$(CONFIG_MFD_RK808) += rk808.o
> +obj-$(CONFIG_MFD_RK808) += rk8xx-core.o
> +obj-$(CONFIG_MFD_RK8XX_I2C) += rk8xx-i2c.o
> obj-$(CONFIG_MFD_RN5T618) += rn5t618.o
> obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o
> obj-$(CONFIG_MFD_SYSCON) += syscon.o
> diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk8xx-core.c
> similarity index 76%
> rename from drivers/mfd/rk808.c
> rename to drivers/mfd/rk8xx-core.c
> index 518c6deec4b1..d0ce17d98fdc 100644
> --- a/drivers/mfd/rk808.c
> +++ b/drivers/mfd/rk8xx-core.c
> @@ -12,7 +12,6 @@
> * 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>
> @@ -27,88 +26,6 @@ struct rk808_reg_data {
> 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_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 const struct resource rtc_resources[] = {
> DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
> };
> @@ -584,9 +501,9 @@ static int rk808_restart(struct sys_off_data *data)
> return NOTIFY_DONE;
> }
>
> -static void rk8xx_shutdown(struct i2c_client *client)
> +void rk8xx_shutdown(struct device *dev)
> {
> - struct rk808 *rk808 = i2c_get_clientdata(client);
> + struct rk808 *rk808 = dev_get_drvdata(dev);
> int ret;
>
> switch (rk808->variant) {
> @@ -607,62 +524,31 @@ static void rk8xx_shutdown(struct i2c_client *client)
> return;
> }
> if (ret)
> - dev_warn(&client->dev,
> + dev_warn(dev,
> "Cannot switch to power down function\n");
> }
> +EXPORT_SYMBOL_GPL(rk8xx_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)
> +int rk8xx_probe(struct device *dev, int variant, unsigned int irq, struct regmap *regmap)
> {
> - 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);
> + rk808 = devm_kzalloc(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)
> - return dev_err_probe(&client->dev, msb, "failed to read the chip id MSB\n");
> -
> - lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
> - if (lsb < 0)
> - return dev_err_probe(&client->dev, lsb, "failed to read the chip id LSB\n");
> -
> - rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
> - dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
> + rk808->dev = dev;
> + rk808->variant = variant;
> + rk808->regmap = regmap;
> + dev_set_drvdata(dev, rk808);
>
> 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);
> @@ -670,7 +556,6 @@ static int rk808_probe(struct i2c_client *client,
> 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);
> @@ -678,7 +563,6 @@ static int rk808_probe(struct i2c_client *client,
> 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);
> @@ -687,7 +571,6 @@ static int rk808_probe(struct i2c_client *client,
> 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);
> @@ -695,27 +578,20 @@ static int rk808_probe(struct i2c_client *client,
> nr_cells = ARRAY_SIZE(rk817s);
> break;
> default:
> - dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
> - rk808->variant);
> + dev_err(dev, "Unsupported RK8XX ID %lu\n", rk808->variant);
> return -EINVAL;
> }
>
> - rk808->dev = &client->dev;
> - i2c_set_clientdata(client, rk808);
> + dev_info(dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
>
> - rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
> - if (IS_ERR(rk808->regmap))
> - return dev_err_probe(&client->dev, PTR_ERR(rk808->regmap),
> - "regmap initialization failed\n");
> + if (!irq)
> + return dev_err_probe(dev, -EINVAL, "No interrupt support, no core IRQ\n");
>
> - if (!client->irq)
> - return dev_err_probe(&client->dev, -EINVAL, "No interrupt support, no core IRQ\n");
> -
> - ret = devm_regmap_add_irq_chip(&client->dev, rk808->regmap, client->irq,
> + ret = devm_regmap_add_irq_chip(dev, rk808->regmap, irq,
> IRQF_ONESHOT, -1,
> rk808->regmap_irq_chip, &rk808->irq_data);
> if (ret)
> - return dev_err_probe(&client->dev, ret, "Failed to add irq_chip\n");
> + return dev_err_probe(dev, ret, "Failed to add irq_chip\n");
>
> for (i = 0; i < nr_pre_init_regs; i++) {
> ret = regmap_update_bits(rk808->regmap,
> @@ -723,45 +599,46 @@ static int rk808_probe(struct i2c_client *client,
> pre_init_reg[i].mask,
> pre_init_reg[i].value);
> if (ret)
> - return dev_err_probe(&client->dev, ret, "0x%x write err\n",
> + return dev_err_probe(dev, ret, "0x%x write err\n",
> pre_init_reg[i].addr);
> }
>
> - ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
> + ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,
> cells, nr_cells, NULL, 0,
> regmap_irq_get_domain(rk808->irq_data));
> if (ret)
> - return dev_err_probe(&client->dev, ret, "failed to add MFD devices\n");
> + return dev_err_probe(dev, ret, "failed to add MFD devices\n");
>
> - if (of_property_read_bool(np, "rockchip,system-power-controller")) {
> - ret = devm_register_sys_off_handler(&client->dev,
> + if (device_property_read_bool(dev, "rockchip,system-power-controller")) {
> + ret = devm_register_sys_off_handler(dev,
> SYS_OFF_MODE_POWER_OFF_PREPARE, SYS_OFF_PRIO_HIGH,
> &rk808_power_off, rk808);
> if (ret)
> - return dev_err_probe(&client->dev, ret,
> + return dev_err_probe(dev, ret,
> "failed to register poweroff handler\n");
>
> switch (rk808->variant) {
> case RK809_ID:
> case RK817_ID:
> - ret = devm_register_sys_off_handler(&client->dev,
> + ret = devm_register_sys_off_handler(dev,
> SYS_OFF_MODE_RESTART, SYS_OFF_PRIO_HIGH,
> &rk808_restart, rk808);
> if (ret)
> - dev_warn(&client->dev, "failed to register rst handler, %d\n", ret);
> + dev_warn(dev, "failed to register rst handler, %d\n", ret);
> break;
> default:
> - dev_dbg(&client->dev, "pmic controlled board reset not supported\n");
> + dev_dbg(dev, "pmic controlled board reset not supported\n");
> break;
> }
> }
>
> return 0;
> }
> +EXPORT_SYMBOL_GPL(rk8xx_probe);
>
> -static int __maybe_unused rk8xx_suspend(struct device *dev)
> +int rk8xx_suspend(struct device *dev)
> {
> - struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
> + struct rk808 *rk808 = dev_get_drvdata(dev);
> int ret = 0;
>
> switch (rk808->variant) {
> @@ -784,10 +661,11 @@ static int __maybe_unused rk8xx_suspend(struct device *dev)
>
> return ret;
> }
> +EXPORT_SYMBOL_GPL(rk8xx_suspend);
>
> -static int __maybe_unused rk8xx_resume(struct device *dev)
> +int rk8xx_resume(struct device *dev)
> {
> - struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
> + struct rk808 *rk808 = dev_get_drvdata(dev);
> int ret = 0;
>
> switch (rk808->variant) {
> @@ -804,22 +682,10 @@ static int __maybe_unused rk8xx_resume(struct device *dev)
>
> 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,
> - .shutdown = rk8xx_shutdown,
> -};
> -
> -module_i2c_driver(rk808_i2c_driver);
> +EXPORT_SYMBOL_GPL(rk8xx_resume);
>
> 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");
> +MODULE_DESCRIPTION("RK8xx PMIC core");
> diff --git a/drivers/mfd/rk8xx-i2c.c b/drivers/mfd/rk8xx-i2c.c
> new file mode 100644
> index 000000000000..325d0e519325
> --- /dev/null
> +++ b/drivers/mfd/rk8xx-i2c.c
> @@ -0,0 +1,203 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * MFD i2c driver for Rockchip RK808/RK818
Please drop the "MFD" here, so:
Rockchip RK808/RK818 Core (I2C) driver
> + * 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>
> + */
This is a new file, right? So this might need updating.
> +#include <linux/i2c.h>
> +#include <linux/mfd/rk808.h>
You're missing includes here.
> +static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
#include <linux/device.h>
> +{
> + /*
> + * 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_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 = {
#include <linux/regmap.h> etc - please look for others.
> + .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 int rk8xx_i2c_get_variant(struct i2c_client *client)
> +{
> + u8 pmic_id_msb, pmic_id_lsb;
> + int msb, lsb;
> +
> + if (of_device_is_compatible(client->dev.of_node, "rockchip,rk817") ||
> + of_device_is_compatible(client->dev.of_node, "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)
> + return dev_err_probe(&client->dev, msb, "failed to read the chip id MSB\n");
> +
> + lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
> + if (lsb < 0)
> + return dev_err_probe(&client->dev, lsb, "failed to read the chip id LSB\n");
> +
> + return ((msb << 8) | lsb) & RK8XX_ID_MSK;
> +}
> +
> +static int rk8xx_i2c_probe(struct i2c_client *client)
> +{
> + const struct regmap_config *regmap_cfg;
> + struct regmap *regmap;
> + int variant;
> +
> + variant = rk8xx_i2c_get_variant(client);
> + if (variant < 0)
> + return variant;
> +
> + switch (variant) {
> + case RK805_ID:
> + regmap_cfg = &rk805_regmap_config;
> + break;
> + case RK808_ID:
> + regmap_cfg = &rk808_regmap_config;
> + break;
> + case RK818_ID:
> + regmap_cfg = &rk818_regmap_config;
> + break;
> + case RK809_ID:
> + case RK817_ID:
> + regmap_cfg = &rk817_regmap_config;
> + break;
> + default:
> + return dev_err_probe(&client->dev, -EINVAL, "Unsupported RK8XX ID %x\n", variant);
> + }
> +
> + regmap = devm_regmap_init_i2c(client, regmap_cfg);
> + if (IS_ERR(regmap))
> + return dev_err_probe(&client->dev, PTR_ERR(regmap),
> + "regmap initialization failed\n");
> +
> + return rk8xx_probe(&client->dev, variant, client->irq, regmap);
> +}
> +
> +static void rk8xx_i2c_shutdown(struct i2c_client *client)
> +{
> + rk8xx_shutdown(&client->dev);
> +}
> +
> +static int __maybe_unused rk8xx_i2c_suspend(struct device *dev)
> +{
> + return rk8xx_suspend(dev);
> +}
> +
> +static int __maybe_unused rk8xx_i2c_resume(struct device *dev)
> +{
> + return rk8xx_resume(dev);
> +}
> +static SIMPLE_DEV_PM_OPS(rk8xx_i2c_pm_ops, rk8xx_i2c_suspend, rk8xx_i2c_resume);
> +
> +static const struct of_device_id rk8xx_i2c_of_match[] = {
> + { .compatible = "rockchip,rk805" },
> + { .compatible = "rockchip,rk808" },
> + { .compatible = "rockchip,rk809" },
> + { .compatible = "rockchip,rk817" },
> + { .compatible = "rockchip,rk818" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, rk8xx_i2c_of_match);
> +
> +static struct i2c_driver rk8xx_i2c_driver = {
> + .driver = {
> + .name = "rk8xx-i2c",
> + .of_match_table = rk8xx_i2c_of_match,
> + .pm = &rk8xx_i2c_pm_ops,
> + },
> + .probe_new = rk8xx_i2c_probe,
> + .shutdown = rk8xx_i2c_shutdown,
> +};
> +module_i2c_driver(rk8xx_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>");
Not mentioned in the header?
> +MODULE_DESCRIPTION("RK8xx I2C PMIC driver");
> diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h
> index 9937b068fa82..c5ddfb0e5353 100644
> --- a/include/linux/mfd/rk808.h
> +++ b/include/linux/mfd/rk808.h
> @@ -703,4 +703,10 @@ struct rk808 {
> const struct regmap_config *regmap_cfg;
> const struct regmap_irq_chip *regmap_irq_chip;
> };
> +
> +void rk8xx_shutdown(struct device *dev);
> +int rk8xx_probe(struct device *dev, int variant, unsigned int irq, struct regmap *regmap);
> +int rk8xx_suspend(struct device *dev);
> +int rk8xx_resume(struct device *dev);
> +
> #endif /* __LINUX_REGULATOR_RK808_H */
--
Lee Jones [李琼斯]
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