* [rtc-linux] [PATCH] rtc: ds1307: convert driver to regmap
@ 2017-03-10 6:54 Heiner Kallweit
0 siblings, 0 replies; only message in thread
From: Heiner Kallweit @ 2017-03-10 6:54 UTC (permalink / raw)
To: Alessandro Zummo, Alexandre Belloni; +Cc: rtc-linux
This patch converts the ds1307 driver to using regmap. It's a rather
big patch and I can test with DS3231 only. With this chip it's
working fine.
I'd appreciate if people with other supported hardware could test as
well.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
drivers/rtc/rtc-ds1307.c | 602 +++++++++++++++++------------------------------
1 file changed, 221 insertions(+), 381 deletions(-)
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 4ad97be4..4e535f7e 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -23,6 +23,7 @@
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/clk-provider.h>
+#include <linux/regmap.h>
/*
* We can't determine type by probing, but if we expect pre-Linux code
@@ -117,12 +118,11 @@ struct ds1307 {
unsigned long flags;
#define HAS_NVRAM 0 /* bit 0 == sysfs file active */
#define HAS_ALARM 1 /* bit 1 == irq claimed */
- struct i2c_client *client;
+ struct device *dev;
+ struct regmap *regmap;
+ const char *name;
+ int irq;
struct rtc_device *rtc;
- s32 (*read_block_data)(const struct i2c_client *client, u8 command,
- u8 length, u8 *values);
- s32 (*write_block_data)(const struct i2c_client *client, u8 command,
- u8 length, const u8 *values);
#ifdef CONFIG_COMMON_CLK
struct clk_hw clks[2];
#endif
@@ -134,11 +134,11 @@ struct chip_desc {
u16 nvram_size;
u16 trickle_charger_reg;
u8 trickle_charger_setup;
- u8 (*do_trickle_setup)(struct i2c_client *, uint32_t, bool);
+ u8 (*do_trickle_setup)(struct ds1307 *, uint32_t,
+ bool);
};
-static u8 do_trickle_setup_ds1339(struct i2c_client *,
- uint32_t ohms, bool diode);
+static u8 do_trickle_setup_ds1339(struct ds1307 *, uint32_t ohms, bool diode);
static struct chip_desc chips[last_ds_type] = {
[ds_1307] = {
@@ -212,136 +212,6 @@ static const struct acpi_device_id ds1307_acpi_ids[] = {
MODULE_DEVICE_TABLE(acpi, ds1307_acpi_ids);
#endif
-/*----------------------------------------------------------------------*/
-
-#define BLOCK_DATA_MAX_TRIES 10
-
-static s32 ds1307_read_block_data_once(const struct i2c_client *client,
- u8 command, u8 length, u8 *values)
-{
- s32 i, data;
-
- for (i = 0; i < length; i++) {
- data = i2c_smbus_read_byte_data(client, command + i);
- if (data < 0)
- return data;
- values[i] = data;
- }
- return i;
-}
-
-static s32 ds1307_read_block_data(const struct i2c_client *client, u8 command,
- u8 length, u8 *values)
-{
- u8 oldvalues[255];
- s32 ret;
- int tries = 0;
-
- dev_dbg(&client->dev, "ds1307_read_block_data (length=%d)\n", length);
- ret = ds1307_read_block_data_once(client, command, length, values);
- if (ret < 0)
- return ret;
- do {
- if (++tries > BLOCK_DATA_MAX_TRIES) {
- dev_err(&client->dev,
- "ds1307_read_block_data failed\n");
- return -EIO;
- }
- memcpy(oldvalues, values, length);
- ret = ds1307_read_block_data_once(client, command, length,
- values);
- if (ret < 0)
- return ret;
- } while (memcmp(oldvalues, values, length));
- return length;
-}
-
-static s32 ds1307_write_block_data(const struct i2c_client *client, u8 command,
- u8 length, const u8 *values)
-{
- u8 currvalues[255];
- int tries = 0;
-
- dev_dbg(&client->dev, "ds1307_write_block_data (length=%d)\n", length);
- do {
- s32 i, ret;
-
- if (++tries > BLOCK_DATA_MAX_TRIES) {
- dev_err(&client->dev,
- "ds1307_write_block_data failed\n");
- return -EIO;
- }
- for (i = 0; i < length; i++) {
- ret = i2c_smbus_write_byte_data(client, command + i,
- values[i]);
- if (ret < 0)
- return ret;
- }
- ret = ds1307_read_block_data_once(client, command, length,
- currvalues);
- if (ret < 0)
- return ret;
- } while (memcmp(currvalues, values, length));
- return length;
-}
-
-/*----------------------------------------------------------------------*/
-
-/* These RTC devices are not designed to be connected to a SMbus adapter.
- SMbus limits block operations length to 32 bytes, whereas it's not
- limited on I2C buses. As a result, accesses may exceed 32 bytes;
- in that case, split them into smaller blocks */
-
-static s32 ds1307_native_smbus_write_block_data(const struct i2c_client *client,
- u8 command, u8 length, const u8 *values)
-{
- u8 suboffset = 0;
-
- if (length <= I2C_SMBUS_BLOCK_MAX) {
- s32 retval = i2c_smbus_write_i2c_block_data(client,
- command, length, values);
- if (retval < 0)
- return retval;
- return length;
- }
-
- while (suboffset < length) {
- s32 retval = i2c_smbus_write_i2c_block_data(client,
- command + suboffset,
- min(I2C_SMBUS_BLOCK_MAX, length - suboffset),
- values + suboffset);
- if (retval < 0)
- return retval;
-
- suboffset += I2C_SMBUS_BLOCK_MAX;
- }
- return length;
-}
-
-static s32 ds1307_native_smbus_read_block_data(const struct i2c_client *client,
- u8 command, u8 length, u8 *values)
-{
- u8 suboffset = 0;
-
- if (length <= I2C_SMBUS_BLOCK_MAX)
- return i2c_smbus_read_i2c_block_data(client,
- command, length, values);
-
- while (suboffset < length) {
- s32 retval = i2c_smbus_read_i2c_block_data(client,
- command + suboffset,
- min(I2C_SMBUS_BLOCK_MAX, length - suboffset),
- values + suboffset);
- if (retval < 0)
- return retval;
-
- suboffset += I2C_SMBUS_BLOCK_MAX;
- }
- return length;
-}
-
-/*----------------------------------------------------------------------*/
-
/*
* The ds1337 and ds1339 both have two alarms, but we only use the first
* one (with a "seconds" field). For ds1337 we expect nINTA is our alarm
@@ -349,26 +219,25 @@ static s32 ds1307_native_smbus_read_block_data(const struct i2c_client *client,
*/
static irqreturn_t ds1307_irq(int irq, void *dev_id)
{
- struct i2c_client *client = dev_id;
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
+ struct ds1307 *ds1307 = dev_id;
struct mutex *lock = &ds1307->rtc->ops_lock;
- int stat, control;
+ int stat, control, ret;
mutex_lock(lock);
- stat = i2c_smbus_read_byte_data(client, DS1337_REG_STATUS);
- if (stat < 0)
+ ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &stat);
+ if (ret)
goto out;
if (stat & DS1337_BIT_A1I) {
stat &= ~DS1337_BIT_A1I;
- i2c_smbus_write_byte_data(client, DS1337_REG_STATUS, stat);
+ regmap_write(ds1307->regmap, DS1337_REG_STATUS, stat);
- control = i2c_smbus_read_byte_data(client, DS1337_REG_CONTROL);
- if (control < 0)
+ ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
+ if (ret)
goto out;
control &= ~DS1337_BIT_A1IE;
- i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL, control);
+ regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control);
rtc_update_irq(ds1307->rtc, 1, RTC_AF | RTC_IRQF);
}
@@ -384,14 +253,13 @@ static irqreturn_t ds1307_irq(int irq, void *dev_id)
static int ds1307_get_time(struct device *dev, struct rtc_time *t)
{
struct ds1307 *ds1307 = dev_get_drvdata(dev);
- int tmp;
+ int tmp, ret;
/* read the RTC date and time registers all at once */
- tmp = ds1307->read_block_data(ds1307->client,
- ds1307->offset, 7, ds1307->regs);
- if (tmp != 7) {
- dev_err(dev, "%s error %d\n", "read", tmp);
- return -EIO;
+ ret = regmap_bulk_read(ds1307->regmap, ds1307->offset, ds1307->regs, 7);
+ if (ret) {
+ dev_err(dev, "%s error %d\n", "read", ret);
+ return ret;
}
dev_dbg(dev, "%s: %7ph\n", "read", ds1307->regs);
@@ -505,9 +373,8 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
dev_dbg(dev, "%s: %7ph\n", "write", buf);
- result = ds1307->write_block_data(ds1307->client,
- ds1307->offset, 7, buf);
- if (result < 0) {
+ result = regmap_bulk_write(ds1307->regmap, ds1307->offset, buf, 7);
+ if (result) {
dev_err(dev, "%s error %d\n", "write", result);
return result;
}
@@ -516,19 +383,18 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
+ struct ds1307 *ds1307 = dev_get_drvdata(dev);
int ret;
if (!test_bit(HAS_ALARM, &ds1307->flags))
return -EINVAL;
/* read all ALARM1, ALARM2, and status registers at once */
- ret = ds1307->read_block_data(client,
- DS1339_REG_ALARM1_SECS, 9, ds1307->regs);
- if (ret != 9) {
+ ret = regmap_bulk_read(ds1307->regmap, DS1339_REG_ALARM1_SECS,
+ ds1307->regs, 9);
+ if (ret) {
dev_err(dev, "%s error %d\n", "alarm read", ret);
- return -EIO;
+ return ret;
}
dev_dbg(dev, "%s: %4ph, %3ph, %2ph\n", "alarm read",
@@ -558,8 +424,7 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
+ struct ds1307 *ds1307 = dev_get_drvdata(dev);
unsigned char *buf = ds1307->regs;
u8 control, status;
int ret;
@@ -574,11 +439,10 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
t->enabled, t->pending);
/* read current status of both alarms and the chip */
- ret = ds1307->read_block_data(client,
- DS1339_REG_ALARM1_SECS, 9, buf);
- if (ret != 9) {
+ ret = regmap_bulk_read(ds1307->regmap, DS1339_REG_ALARM1_SECS, buf, 9);
+ if (ret) {
dev_err(dev, "%s error %d\n", "alarm write", ret);
- return -EIO;
+ return ret;
}
control = ds1307->regs[7];
status = ds1307->regs[8];
@@ -601,9 +465,8 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
buf[7] = control & ~(DS1337_BIT_A1IE | DS1337_BIT_A2IE);
buf[8] = status & ~(DS1337_BIT_A1I | DS1337_BIT_A2I);
- ret = ds1307->write_block_data(client,
- DS1339_REG_ALARM1_SECS, 9, buf);
- if (ret < 0) {
+ ret = regmap_bulk_write(ds1307->regmap, DS1339_REG_ALARM1_SECS, buf, 9);
+ if (ret) {
dev_err(dev, "can't set alarm time\n");
return ret;
}
@@ -612,7 +475,7 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
if (t->enabled) {
dev_dbg(dev, "alarm IRQ armed\n");
buf[7] |= DS1337_BIT_A1IE; /* only ALARM1 is used */
- i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL, buf[7]);
+ regmap_write(ds1307->regmap, DS1337_REG_CONTROL, buf[7]);
}
return 0;
@@ -620,27 +483,22 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
static int ds1307_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
- int ret;
+ struct ds1307 *ds1307 = dev_get_drvdata(dev);
+ int control, ret;
if (!test_bit(HAS_ALARM, &ds1307->flags))
return -ENOTTY;
- ret = i2c_smbus_read_byte_data(client, DS1337_REG_CONTROL);
- if (ret < 0)
+ ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
+ if (ret)
return ret;
if (enabled)
- ret |= DS1337_BIT_A1IE;
+ control |= DS1337_BIT_A1IE;
else
- ret &= ~DS1337_BIT_A1IE;
-
- ret = i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL, ret);
- if (ret < 0)
- return ret;
+ control &= ~DS1337_BIT_A1IE;
- return 0;
+ return regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control);
}
static const struct rtc_class_ops ds13xx_rtc_ops = {
@@ -677,31 +535,30 @@ static const struct rtc_class_ops ds13xx_rtc_ops = {
static irqreturn_t mcp794xx_irq(int irq, void *dev_id)
{
- struct i2c_client *client = dev_id;
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
+ struct ds1307 *ds1307 = dev_id;
struct mutex *lock = &ds1307->rtc->ops_lock;
int reg, ret;
mutex_lock(lock);
/* Check and clear alarm 0 interrupt flag. */
- reg = i2c_smbus_read_byte_data(client, MCP794XX_REG_ALARM0_CTRL);
- if (reg < 0)
+ ret = regmap_read(ds1307->regmap, MCP794XX_REG_ALARM0_CTRL, ®);
+ if (ret)
goto out;
if (!(reg & MCP794XX_BIT_ALMX_IF))
goto out;
reg &= ~MCP794XX_BIT_ALMX_IF;
- ret = i2c_smbus_write_byte_data(client, MCP794XX_REG_ALARM0_CTRL, reg);
- if (ret < 0)
+ ret = regmap_write(ds1307->regmap, MCP794XX_REG_ALARM0_CTRL, reg);
+ if (ret)
goto out;
/* Disable alarm 0. */
- reg = i2c_smbus_read_byte_data(client, MCP794XX_REG_CONTROL);
- if (reg < 0)
+ ret = regmap_read(ds1307->regmap, MCP794XX_REG_CONTROL, ®);
+ if (ret)
goto out;
reg &= ~MCP794XX_BIT_ALM0_EN;
- ret = i2c_smbus_write_byte_data(client, MCP794XX_REG_CONTROL, reg);
- if (ret < 0)
+ ret = regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, reg);
+ if (ret)
goto out;
rtc_update_irq(ds1307->rtc, 1, RTC_AF | RTC_IRQF);
@@ -714,8 +571,7 @@ static irqreturn_t mcp794xx_irq(int irq, void *dev_id)
static int mcp794xx_read_alarm(struct device *dev, struct rtc_wkalrm *t)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
+ struct ds1307 *ds1307 = dev_get_drvdata(dev);
u8 *regs = ds1307->regs;
int ret;
@@ -723,8 +579,8 @@ static int mcp794xx_read_alarm(struct device *dev, struct rtc_wkalrm *t)
return -EINVAL;
/* Read control and alarm 0 registers. */
- ret = ds1307->read_block_data(client, MCP794XX_REG_CONTROL, 10, regs);
- if (ret < 0)
+ ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs, 10);
+ if (ret)
return ret;
t->enabled = !!(regs[0] & MCP794XX_BIT_ALM0_EN);
@@ -753,8 +609,7 @@ static int mcp794xx_read_alarm(struct device *dev, struct rtc_wkalrm *t)
static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
+ struct ds1307 *ds1307 = dev_get_drvdata(dev);
unsigned char *regs = ds1307->regs;
int ret;
@@ -768,8 +623,8 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
t->enabled, t->pending);
/* Read control and alarm 0 registers. */
- ret = ds1307->read_block_data(client, MCP794XX_REG_CONTROL, 10, regs);
- if (ret < 0)
+ ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs, 10);
+ if (ret)
return ret;
/* Set alarm 0, using 24-hour and day-of-month modes. */
@@ -787,35 +642,34 @@ static int mcp794xx_set_alarm(struct device *dev, struct rtc_wkalrm *t)
/* Disable interrupt. We will not enable until completely programmed */
regs[0] &= ~MCP794XX_BIT_ALM0_EN;
- ret = ds1307->write_block_data(client, MCP794XX_REG_CONTROL, 10, regs);
- if (ret < 0)
+ ret = regmap_bulk_write(ds1307->regmap, MCP794XX_REG_CONTROL, regs, 10);
+ if (ret)
return ret;
if (!t->enabled)
return 0;
regs[0] |= MCP794XX_BIT_ALM0_EN;
- return i2c_smbus_write_byte_data(client, MCP794XX_REG_CONTROL, regs[0]);
+ return regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, regs[0]);
}
static int mcp794xx_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ds1307 *ds1307 = i2c_get_clientdata(client);
- int reg;
+ struct ds1307 *ds1307 = dev_get_drvdata(dev);
+ int reg, ret;
if (!test_bit(HAS_ALARM, &ds1307->flags))
return -EINVAL;
- reg = i2c_smbus_read_byte_data(client, MCP794XX_REG_CONTROL);
- if (reg < 0)
- return reg;
+ ret = regmap_read(ds1307->regmap, MCP794XX_REG_CONTROL, ®);
+ if (ret)
+ return ret;
if (enabled)
reg |= MCP794XX_BIT_ALM0_EN;
else
reg &= ~MCP794XX_BIT_ALM0_EN;
- return i2c_smbus_write_byte_data(client, MCP794XX_REG_CONTROL, reg);
+ return regmap_write(ds1307->regmap, MCP794XX_REG_CONTROL, reg);
}
static const struct rtc_class_ops mcp794xx_rtc_ops = {
@@ -833,17 +687,15 @@ ds1307_nvram_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
- struct i2c_client *client;
struct ds1307 *ds1307;
int result;
- client = kobj_to_i2c_client(kobj);
- ds1307 = i2c_get_clientdata(client);
+ ds1307 = dev_get_drvdata(kobj_to_dev(kobj));
- result = ds1307->read_block_data(client, ds1307->nvram_offset + off,
- count, buf);
- if (result < 0)
- dev_err(&client->dev, "%s error %d\n", "nvram read", result);
+ result = regmap_bulk_read(ds1307->regmap, ds1307->nvram_offset + off,
+ buf, count);
+ if (result)
+ dev_err(ds1307->dev, "%s error %d\n", "nvram read", result);
return result;
}
@@ -852,17 +704,15 @@ ds1307_nvram_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
- struct i2c_client *client;
struct ds1307 *ds1307;
int result;
- client = kobj_to_i2c_client(kobj);
- ds1307 = i2c_get_clientdata(client);
+ ds1307 = dev_get_drvdata(kobj_to_dev(kobj));
- result = ds1307->write_block_data(client, ds1307->nvram_offset + off,
- count, buf);
- if (result < 0) {
- dev_err(&client->dev, "%s error %d\n", "nvram write", result);
+ result = regmap_bulk_write(ds1307->regmap, ds1307->nvram_offset + off,
+ buf, count);
+ if (result) {
+ dev_err(ds1307->dev, "%s error %d\n", "nvram write", result);
return result;
}
return count;
@@ -871,7 +721,7 @@ ds1307_nvram_write(struct file *filp, struct kobject *kobj,
/*----------------------------------------------------------------------*/
-static u8 do_trickle_setup_ds1339(struct i2c_client *client,
+static u8 do_trickle_setup_ds1339(struct ds1307 *ds1307,
uint32_t ohms, bool diode)
{
u8 setup = (diode) ? DS1307_TRICKLE_CHARGER_DIODE :
@@ -888,14 +738,14 @@ static u8 do_trickle_setup_ds1339(struct i2c_client *client,
setup |= DS1307_TRICKLE_CHARGER_4K_OHM;
break;
default:
- dev_warn(&client->dev,
+ dev_warn(ds1307->dev,
"Unsupported ohm value %u in dt\n", ohms);
return 0;
}
return setup;
}
-static void ds1307_trickle_init(struct i2c_client *client,
+static void ds1307_trickle_init(struct ds1307 *ds1307,
struct chip_desc *chip)
{
uint32_t ohms = 0;
@@ -903,11 +753,12 @@ static void ds1307_trickle_init(struct i2c_client *client,
if (!chip->do_trickle_setup)
goto out;
- if (device_property_read_u32(&client->dev, "trickle-resistor-ohms", &ohms))
+ if (device_property_read_u32(ds1307->dev, "trickle-resistor-ohms",
+ &ohms))
goto out;
- if (device_property_read_bool(&client->dev, "trickle-diode-disable"))
+ if (device_property_read_bool(ds1307->dev, "trickle-diode-disable"))
diode = false;
- chip->trickle_charger_setup = chip->do_trickle_setup(client,
+ chip->trickle_charger_setup = chip->do_trickle_setup(ds1307,
ohms, diode);
out:
return;
@@ -934,13 +785,10 @@ static int ds3231_hwmon_read_temp(struct device *dev, s32 *mC)
s16 temp;
int ret;
- ret = ds1307->read_block_data(ds1307->client, DS3231_REG_TEMPERATURE,
- sizeof(temp_buf), temp_buf);
- if (ret < 0)
+ ret = regmap_bulk_read(ds1307->regmap, DS3231_REG_TEMPERATURE,
+ temp_buf, sizeof(temp_buf));
+ if (ret)
return ret;
- if (ret != sizeof(temp_buf))
- return -EIO;
-
/*
* Temperature is represented as a 10-bit code with a resolution of
* 0.25 degree celsius and encoded in two's complement format.
@@ -980,12 +828,11 @@ static void ds1307_hwmon_register(struct ds1307 *ds1307)
if (ds1307->type != ds_3231)
return;
- dev = devm_hwmon_device_register_with_groups(&ds1307->client->dev,
- ds1307->client->name,
+ dev = devm_hwmon_device_register_with_groups(ds1307->dev, ds1307->name,
ds1307, ds3231_hwmon_groups);
if (IS_ERR(dev)) {
- dev_warn(&ds1307->client->dev,
- "unable to register hwmon device %ld\n", PTR_ERR(dev));
+ dev_warn(ds1307->dev, "unable to register hwmon device %ld\n",
+ PTR_ERR(dev));
}
}
@@ -1024,23 +871,20 @@ static int ds3231_clk_sqw_rates[] = {
static int ds1337_write_control(struct ds1307 *ds1307, u8 mask, u8 value)
{
- struct i2c_client *client = ds1307->client;
struct mutex *lock = &ds1307->rtc->ops_lock;
int control;
int ret;
mutex_lock(lock);
- control = i2c_smbus_read_byte_data(client, DS1337_REG_CONTROL);
- if (control < 0) {
- ret = control;
+ ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
+ if (ret)
goto out;
- }
control &= ~mask;
control |= value;
- ret = i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL, control);
+ ret = regmap_write(ds1307->regmap, DS1337_REG_CONTROL, control);
out:
mutex_unlock(lock);
@@ -1051,12 +895,12 @@ static unsigned long ds3231_clk_sqw_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct ds1307 *ds1307 = clk_sqw_to_ds1307(hw);
- int control;
+ int control, ret;
int rate_sel = 0;
- control = i2c_smbus_read_byte_data(ds1307->client, DS1337_REG_CONTROL);
- if (control < 0)
- return control;
+ ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
+ if (ret)
+ return ret;
if (control & DS1337_BIT_RS1)
rate_sel += 1;
if (control & DS1337_BIT_RS2)
@@ -1120,11 +964,11 @@ static void ds3231_clk_sqw_unprepare(struct clk_hw *hw)
static int ds3231_clk_sqw_is_prepared(struct clk_hw *hw)
{
struct ds1307 *ds1307 = clk_sqw_to_ds1307(hw);
- int control;
+ int control, ret;
- control = i2c_smbus_read_byte_data(ds1307->client, DS1337_REG_CONTROL);
- if (control < 0)
- return control;
+ ret = regmap_read(ds1307->regmap, DS1337_REG_CONTROL, &control);
+ if (ret)
+ return ret;
return !(control & DS1337_BIT_INTCN);
}
@@ -1146,25 +990,22 @@ static unsigned long ds3231_clk_32khz_recalc_rate(struct clk_hw *hw,
static int ds3231_clk_32khz_control(struct ds1307 *ds1307, bool enable)
{
- struct i2c_client *client = ds1307->client;
struct mutex *lock = &ds1307->rtc->ops_lock;
int status;
int ret;
mutex_lock(lock);
- status = i2c_smbus_read_byte_data(client, DS1337_REG_STATUS);
- if (status < 0) {
- ret = status;
+ ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &status);
+ if (ret)
goto out;
- }
if (enable)
status |= DS3231_BIT_EN32KHZ;
else
status &= ~DS3231_BIT_EN32KHZ;
- ret = i2c_smbus_write_byte_data(client, DS1337_REG_STATUS, status);
+ ret = regmap_write(ds1307->regmap, DS1337_REG_STATUS, status);
out:
mutex_unlock(lock);
@@ -1188,11 +1029,11 @@ static void ds3231_clk_32khz_unprepare(struct clk_hw *hw)
static int ds3231_clk_32khz_is_prepared(struct clk_hw *hw)
{
struct ds1307 *ds1307 = clk_32khz_to_ds1307(hw);
- int status;
+ int status, ret;
- status = i2c_smbus_read_byte_data(ds1307->client, DS1337_REG_STATUS);
- if (status < 0)
- return status;
+ ret = regmap_read(ds1307->regmap, DS1337_REG_STATUS, &status);
+ if (ret)
+ return ret;
return !!(status & DS3231_BIT_EN32KHZ);
}
@@ -1217,18 +1058,17 @@ static struct clk_init_data ds3231_clks_init[] = {
static int ds3231_clks_register(struct ds1307 *ds1307)
{
- struct i2c_client *client = ds1307->client;
- struct device_node *node = client->dev.of_node;
+ struct device_node *node = ds1307->dev->of_node;
struct clk_onecell_data *onecell;
int i;
- onecell = devm_kzalloc(&client->dev, sizeof(*onecell), GFP_KERNEL);
+ onecell = devm_kzalloc(ds1307->dev, sizeof(*onecell), GFP_KERNEL);
if (!onecell)
return -ENOMEM;
onecell->clk_num = ARRAY_SIZE(ds3231_clks_init);
- onecell->clks = devm_kcalloc(&client->dev, onecell->clk_num,
- sizeof(onecell->clks[0]), GFP_KERNEL);
+ onecell->clks = devm_kcalloc(ds1307->dev, onecell->clk_num,
+ sizeof(onecell->clks[0]), GFP_KERNEL);
if (!onecell->clks)
return -ENOMEM;
@@ -1247,8 +1087,8 @@ static int ds3231_clks_register(struct ds1307 *ds1307)
&init.name);
ds1307->clks[i].init = &init;
- onecell->clks[i] = devm_clk_register(&client->dev,
- &ds1307->clks[i]);
+ onecell->clks[i] = devm_clk_register(ds1307->dev,
+ &ds1307->clks[i]);
if (IS_ERR(onecell->clks[i]))
return PTR_ERR(onecell->clks[i]);
}
@@ -1270,8 +1110,8 @@ static void ds1307_clks_register(struct ds1307 *ds1307)
ret = ds3231_clks_register(ds1307);
if (ret) {
- dev_warn(&ds1307->client->dev,
- "unable to register clock device %d\n", ret);
+ dev_warn(ds1307->dev, "unable to register clock device %d\n",
+ ret);
}
}
@@ -1283,6 +1123,12 @@ static void ds1307_clks_register(struct ds1307 *ds1307)
#endif /* CONFIG_COMMON_CLK */
+static const struct regmap_config regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x12,
+};
+
static int ds1307_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -1290,7 +1136,6 @@ static int ds1307_probe(struct i2c_client *client,
int err = -ENODEV;
int tmp, wday;
struct chip_desc *chip;
- struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
bool want_irq = false;
bool ds1307_can_wakeup_device = false;
unsigned char *buf;
@@ -1307,17 +1152,23 @@ static int ds1307_probe(struct i2c_client *client,
};
const struct rtc_class_ops *rtc_ops = &ds13xx_rtc_ops;
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)
- && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
- return -EIO;
-
ds1307 = devm_kzalloc(&client->dev, sizeof(struct ds1307), GFP_KERNEL);
if (!ds1307)
return -ENOMEM;
+ dev_set_drvdata(&client->dev, ds1307);
+ ds1307->dev = &client->dev;
+ ds1307->name = client->name;
+ ds1307->irq = client->irq;
+
+ ds1307->regmap = devm_regmap_init_i2c(client, ®map_config);
+ if (IS_ERR(ds1307->regmap)) {
+ dev_err(ds1307->dev, "regmap allocation failed\n");
+ return PTR_ERR(ds1307->regmap);
+ }
+
i2c_set_clientdata(client, ds1307);
- ds1307->client = client;
if (id) {
chip = &chips[id->driver_data];
ds1307->type = id->driver_data;
@@ -1325,7 +1176,7 @@ static int ds1307_probe(struct i2c_client *client,
const struct acpi_device_id *acpi_id;
acpi_id = acpi_match_device(ACPI_PTR(ds1307_acpi_ids),
- &client->dev);
+ ds1307->dev);
if (!acpi_id)
return -ENODEV;
chip = &chips[acpi_id->driver_data];
@@ -1333,27 +1184,21 @@ static int ds1307_probe(struct i2c_client *client,
}
if (!pdata)
- ds1307_trickle_init(client, chip);
+ ds1307_trickle_init(ds1307, chip);
else if (pdata->trickle_charger_setup)
chip->trickle_charger_setup = pdata->trickle_charger_setup;
if (chip->trickle_charger_setup && chip->trickle_charger_reg) {
- dev_dbg(&client->dev, "writing trickle charger info 0x%x to 0x%x\n",
+ dev_dbg(ds1307->dev,
+ "writing trickle charger info 0x%x to 0x%x\n",
DS13XX_TRICKLE_CHARGER_MAGIC | chip->trickle_charger_setup,
chip->trickle_charger_reg);
- i2c_smbus_write_byte_data(client, chip->trickle_charger_reg,
+ regmap_write(ds1307->regmap, chip->trickle_charger_reg,
DS13XX_TRICKLE_CHARGER_MAGIC |
chip->trickle_charger_setup);
}
buf = ds1307->regs;
- if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) {
- ds1307->read_block_data = ds1307_native_smbus_read_block_data;
- ds1307->write_block_data = ds1307_native_smbus_write_block_data;
- } else {
- ds1307->read_block_data = ds1307_read_block_data;
- ds1307->write_block_data = ds1307_write_block_data;
- }
#ifdef CONFIG_OF
/*
@@ -1379,11 +1224,10 @@ static int ds1307_probe(struct i2c_client *client,
case ds_1339:
case ds_3231:
/* get registers that the "rtc" read below won't read... */
- tmp = ds1307->read_block_data(ds1307->client,
- DS1337_REG_CONTROL, 2, buf);
- if (tmp != 2) {
- dev_dbg(&client->dev, "read error %d\n", tmp);
- err = -EIO;
+ err = regmap_bulk_read(ds1307->regmap, DS1337_REG_CONTROL,
+ buf, 2);
+ if (err) {
+ dev_dbg(ds1307->dev, "read error %d\n", err);
goto exit;
}
@@ -1397,8 +1241,8 @@ static int ds1307_probe(struct i2c_client *client,
* For some variants, be sure alarms can trigger when we're
* running on Vbackup (BBSQI/BBSQW)
*/
- if (chip->alarm && (ds1307->client->irq > 0 ||
- ds1307_can_wakeup_device)) {
+ if (chip->alarm && (ds1307->irq > 0 ||
+ ds1307_can_wakeup_device)) {
ds1307->regs[0] |= DS1337_BIT_INTCN
| bbsqi_bitpos[ds1307->type];
ds1307->regs[0] &= ~(DS1337_BIT_A2IE | DS1337_BIT_A1IE);
@@ -1406,50 +1250,49 @@ static int ds1307_probe(struct i2c_client *client,
want_irq = true;
}
- i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL,
- ds1307->regs[0]);
+ regmap_write(ds1307->regmap, DS1337_REG_CONTROL,
+ ds1307->regs[0]);
/* oscillator fault? clear flag, and warn */
if (ds1307->regs[1] & DS1337_BIT_OSF) {
- i2c_smbus_write_byte_data(client, DS1337_REG_STATUS,
- ds1307->regs[1] & ~DS1337_BIT_OSF);
- dev_warn(&client->dev, "SET TIME!\n");
+ regmap_write(ds1307->regmap, DS1337_REG_STATUS,
+ ds1307->regs[1] & ~DS1337_BIT_OSF);
+ dev_warn(ds1307->dev, "SET TIME!\n");
}
break;
case rx_8025:
- tmp = i2c_smbus_read_i2c_block_data(ds1307->client,
- RX8025_REG_CTRL1 << 4 | 0x08, 2, buf);
- if (tmp != 2) {
- dev_dbg(&client->dev, "read error %d\n", tmp);
- err = -EIO;
+ err = regmap_bulk_read(ds1307->regmap,
+ RX8025_REG_CTRL1 << 4 | 0x08, buf, 2);
+ if (err) {
+ dev_dbg(ds1307->dev, "read error %d\n", err);
goto exit;
}
/* oscillator off? turn it on, so clock can tick. */
if (!(ds1307->regs[1] & RX8025_BIT_XST)) {
ds1307->regs[1] |= RX8025_BIT_XST;
- i2c_smbus_write_byte_data(client,
- RX8025_REG_CTRL2 << 4 | 0x08,
- ds1307->regs[1]);
- dev_warn(&client->dev,
+ regmap_write(ds1307->regmap,
+ RX8025_REG_CTRL2 << 4 | 0x08,
+ ds1307->regs[1]);
+ dev_warn(ds1307->dev,
"oscillator stop detected - SET TIME!\n");
}
if (ds1307->regs[1] & RX8025_BIT_PON) {
ds1307->regs[1] &= ~RX8025_BIT_PON;
- i2c_smbus_write_byte_data(client,
- RX8025_REG_CTRL2 << 4 | 0x08,
- ds1307->regs[1]);
- dev_warn(&client->dev, "power-on detected\n");
+ regmap_write(ds1307->regmap,
+ RX8025_REG_CTRL2 << 4 | 0x08,
+ ds1307->regs[1]);
+ dev_warn(ds1307->dev, "power-on detected\n");
}
if (ds1307->regs[1] & RX8025_BIT_VDET) {
ds1307->regs[1] &= ~RX8025_BIT_VDET;
- i2c_smbus_write_byte_data(client,
- RX8025_REG_CTRL2 << 4 | 0x08,
- ds1307->regs[1]);
- dev_warn(&client->dev, "voltage drop detected\n");
+ regmap_write(ds1307->regmap,
+ RX8025_REG_CTRL2 << 4 | 0x08,
+ ds1307->regs[1]);
+ dev_warn(ds1307->dev, "voltage drop detected\n");
}
/* make sure we are running in 24hour mode */
@@ -1457,16 +1300,15 @@ static int ds1307_probe(struct i2c_client *client,
u8 hour;
/* switch to 24 hour mode */
- i2c_smbus_write_byte_data(client,
- RX8025_REG_CTRL1 << 4 | 0x08,
- ds1307->regs[0] |
- RX8025_BIT_2412);
-
- tmp = i2c_smbus_read_i2c_block_data(ds1307->client,
- RX8025_REG_CTRL1 << 4 | 0x08, 2, buf);
- if (tmp != 2) {
- dev_dbg(&client->dev, "read error %d\n", tmp);
- err = -EIO;
+ regmap_write(ds1307->regmap,
+ RX8025_REG_CTRL1 << 4 | 0x08,
+ ds1307->regs[0] | RX8025_BIT_2412);
+
+ err = regmap_bulk_read(ds1307->regmap,
+ RX8025_REG_CTRL1 << 4 | 0x08,
+ buf, 2);
+ if (err) {
+ dev_dbg(ds1307->dev, "read error %d\n", err);
goto exit;
}
@@ -1477,9 +1319,8 @@ static int ds1307_probe(struct i2c_client *client,
if (ds1307->regs[DS1307_REG_HOUR] & DS1307_BIT_PM)
hour += 12;
- i2c_smbus_write_byte_data(client,
- DS1307_REG_HOUR << 4 | 0x08,
- hour);
+ regmap_write(ds1307->regmap,
+ DS1307_REG_HOUR << 4 | 0x08, hour);
}
break;
case ds_1388:
@@ -1487,7 +1328,7 @@ static int ds1307_probe(struct i2c_client *client,
break;
case mcp794xx:
rtc_ops = &mcp794xx_rtc_ops;
- if (ds1307->client->irq > 0 && chip->alarm) {
+ if (ds1307->irq > 0 && chip->alarm) {
irq_handler = mcp794xx_irq;
want_irq = true;
}
@@ -1498,10 +1339,9 @@ static int ds1307_probe(struct i2c_client *client,
read_rtc:
/* read RTC registers */
- tmp = ds1307->read_block_data(ds1307->client, ds1307->offset, 8, buf);
- if (tmp != 8) {
- dev_dbg(&client->dev, "read error %d\n", tmp);
- err = -EIO;
+ err = regmap_bulk_read(ds1307->regmap, ds1307->offset, buf, 8);
+ if (err) {
+ dev_dbg(ds1307->dev, "read error %d\n", err);
goto exit;
}
@@ -1516,56 +1356,55 @@ static int ds1307_probe(struct i2c_client *client,
case m41t00:
/* clock halted? turn it on, so clock can tick. */
if (tmp & DS1307_BIT_CH) {
- i2c_smbus_write_byte_data(client, DS1307_REG_SECS, 0);
- dev_warn(&client->dev, "SET TIME!\n");
+ regmap_write(ds1307->regmap, DS1307_REG_SECS, 0);
+ dev_warn(ds1307->dev, "SET TIME!\n");
goto read_rtc;
}
break;
case ds_1338:
/* clock halted? turn it on, so clock can tick. */
if (tmp & DS1307_BIT_CH)
- i2c_smbus_write_byte_data(client, DS1307_REG_SECS, 0);
+ regmap_write(ds1307->regmap, DS1307_REG_SECS, 0);
/* oscillator fault? clear flag, and warn */
if (ds1307->regs[DS1307_REG_CONTROL] & DS1338_BIT_OSF) {
- i2c_smbus_write_byte_data(client, DS1307_REG_CONTROL,
- ds1307->regs[DS1307_REG_CONTROL]
- & ~DS1338_BIT_OSF);
- dev_warn(&client->dev, "SET TIME!\n");
+ regmap_write(ds1307->regmap, DS1307_REG_CONTROL,
+ ds1307->regs[DS1307_REG_CONTROL] &
+ ~DS1338_BIT_OSF);
+ dev_warn(ds1307->dev, "SET TIME!\n");
goto read_rtc;
}
break;
case ds_1340:
/* clock halted? turn it on, so clock can tick. */
if (tmp & DS1340_BIT_nEOSC)
- i2c_smbus_write_byte_data(client, DS1307_REG_SECS, 0);
+ regmap_write(ds1307->regmap, DS1307_REG_SECS, 0);
- tmp = i2c_smbus_read_byte_data(client, DS1340_REG_FLAG);
- if (tmp < 0) {
- dev_dbg(&client->dev, "read error %d\n", tmp);
- err = -EIO;
+ err = regmap_read(ds1307->regmap, DS1340_REG_FLAG, &tmp);
+ if (err) {
+ dev_dbg(ds1307->dev, "read error %d\n", err);
goto exit;
}
/* oscillator fault? clear flag, and warn */
if (tmp & DS1340_BIT_OSF) {
- i2c_smbus_write_byte_data(client, DS1340_REG_FLAG, 0);
- dev_warn(&client->dev, "SET TIME!\n");
+ regmap_write(ds1307->regmap, DS1340_REG_FLAG, 0);
+ dev_warn(ds1307->dev, "SET TIME!\n");
}
break;
case mcp794xx:
/* make sure that the backup battery is enabled */
if (!(ds1307->regs[DS1307_REG_WDAY] & MCP794XX_BIT_VBATEN)) {
- i2c_smbus_write_byte_data(client, DS1307_REG_WDAY,
- ds1307->regs[DS1307_REG_WDAY]
- | MCP794XX_BIT_VBATEN);
+ regmap_write(ds1307->regmap, DS1307_REG_WDAY,
+ ds1307->regs[DS1307_REG_WDAY] |
+ MCP794XX_BIT_VBATEN);
}
/* clock halted? turn it on, so clock can tick. */
if (!(tmp & MCP794XX_BIT_ST)) {
- i2c_smbus_write_byte_data(client, DS1307_REG_SECS,
- MCP794XX_BIT_ST);
- dev_warn(&client->dev, "SET TIME!\n");
+ regmap_write(ds1307->regmap, DS1307_REG_SECS,
+ MCP794XX_BIT_ST);
+ dev_warn(ds1307->dev, "SET TIME!\n");
goto read_rtc;
}
@@ -1598,16 +1437,15 @@ static int ds1307_probe(struct i2c_client *client,
tmp = 0;
if (ds1307->regs[DS1307_REG_HOUR] & DS1307_BIT_PM)
tmp += 12;
- i2c_smbus_write_byte_data(client,
- ds1307->offset + DS1307_REG_HOUR,
- bin2bcd(tmp));
+ regmap_write(ds1307->regmap, ds1307->offset + DS1307_REG_HOUR,
+ bin2bcd(tmp));
}
/*
* Some IPs have weekday reset value = 0x1 which might not correct
* hence compute the wday using the current date/month/year values
*/
- ds1307_get_time(&client->dev, &tm);
+ ds1307_get_time(ds1307->dev, &tm);
wday = tm.tm_wday;
timestamp = rtc_tm_to_time64(&tm);
rtc_time64_to_tm(timestamp, &tm);
@@ -1618,51 +1456,53 @@ static int ds1307_probe(struct i2c_client *client,
* timestamp
*/
if (wday != tm.tm_wday) {
- wday = i2c_smbus_read_byte_data(client, MCP794XX_REG_WEEKDAY);
+ regmap_read(ds1307->regmap, MCP794XX_REG_WEEKDAY, &wday);
wday = wday & ~MCP794XX_REG_WEEKDAY_WDAY_MASK;
wday = wday | (tm.tm_wday + 1);
- i2c_smbus_write_byte_data(client, MCP794XX_REG_WEEKDAY, wday);
+ regmap_write(ds1307->regmap, MCP794XX_REG_WEEKDAY, wday);
}
if (want_irq) {
- device_set_wakeup_capable(&client->dev, true);
+ device_set_wakeup_capable(ds1307->dev, true);
set_bit(HAS_ALARM, &ds1307->flags);
}
- ds1307->rtc = devm_rtc_device_register(&client->dev, client->name,
+ ds1307->rtc = devm_rtc_device_register(ds1307->dev, ds1307->name,
rtc_ops, THIS_MODULE);
if (IS_ERR(ds1307->rtc)) {
return PTR_ERR(ds1307->rtc);
}
- if (ds1307_can_wakeup_device && ds1307->client->irq <= 0) {
+ if (ds1307_can_wakeup_device && ds1307->irq <= 0) {
/* Disable request for an IRQ */
want_irq = false;
- dev_info(&client->dev, "'wakeup-source' is set, request for an IRQ is disabled!\n");
+ dev_info(ds1307->dev,
+ "'wakeup-source' is set, request for an IRQ is disabled!\n");
/* We cannot support UIE mode if we do not have an IRQ line */
ds1307->rtc->uie_unsupported = 1;
}
if (want_irq) {
- err = devm_request_threaded_irq(&client->dev,
- client->irq, NULL, irq_handler,
+ err = devm_request_threaded_irq(ds1307->dev,
+ ds1307->irq, NULL, irq_handler,
IRQF_SHARED | IRQF_ONESHOT,
- ds1307->rtc->name, client);
+ ds1307->rtc->name, ds1307);
if (err) {
client->irq = 0;
- device_set_wakeup_capable(&client->dev, false);
+ device_set_wakeup_capable(ds1307->dev, false);
clear_bit(HAS_ALARM, &ds1307->flags);
- dev_err(&client->dev, "unable to request IRQ!\n");
+ dev_err(ds1307->dev, "unable to request IRQ!\n");
} else
- dev_dbg(&client->dev, "got IRQ %d\n", client->irq);
+ dev_dbg(ds1307->dev, "got IRQ %d\n", client->irq);
}
if (chip->nvram_size) {
- ds1307->nvram = devm_kzalloc(&client->dev,
+ ds1307->nvram = devm_kzalloc(ds1307->dev,
sizeof(struct bin_attribute),
GFP_KERNEL);
if (!ds1307->nvram) {
- dev_err(&client->dev, "cannot allocate memory for nvram sysfs\n");
+ dev_err(ds1307->dev,
+ "cannot allocate memory for nvram sysfs\n");
} else {
ds1307->nvram->attr.name = "nvram";
@@ -1675,15 +1515,15 @@ static int ds1307_probe(struct i2c_client *client,
ds1307->nvram->size = chip->nvram_size;
ds1307->nvram_offset = chip->nvram_offset;
- err = sysfs_create_bin_file(&client->dev.kobj,
+ err = sysfs_create_bin_file(&ds1307->dev->kobj,
ds1307->nvram);
if (err) {
- dev_err(&client->dev,
+ dev_err(ds1307->dev,
"unable to create sysfs file: %s\n",
ds1307->nvram->attr.name);
} else {
set_bit(HAS_NVRAM, &ds1307->flags);
- dev_info(&client->dev, "%zu bytes nvram\n",
+ dev_info(ds1307->dev, "%zu bytes nvram\n",
ds1307->nvram->size);
}
}
@@ -1703,7 +1543,7 @@ static int ds1307_remove(struct i2c_client *client)
struct ds1307 *ds1307 = i2c_get_clientdata(client);
if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags))
- sysfs_remove_bin_file(&client->dev.kobj, ds1307->nvram);
+ sysfs_remove_bin_file(&ds1307->dev->kobj, ds1307->nvram);
return 0;
}
--
2.12.0
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2017-03-10 6:54 [rtc-linux] [PATCH] rtc: ds1307: convert driver to regmap Heiner Kallweit
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