diff options
| author | Trent Piepho <tpiepho@impinj.com> | 2019-02-12 02:34:03 +0000 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-02-17 21:29:10 +0100 |
| commit | ed3c52a075e9488cc672c5658414b2f157fc5688 (patch) | |
| tree | 318c728bcf26a283fe69bc920e24136e9165ad9d | |
| parent | 5736610ab61622ca4ca09a5778a8b18fd3220b1b (diff) | |
| download | linux-ed3c52a075e9488cc672c5658414b2f157fc5688.tar.bz2 | |
rtc: isl1208: Introduce driver state struct
This driver has no state of its own, depending entirely on what is in
the generic rtc device.
Intoduce a state struct. For now it only contains a pointer to the rtc
device struct, but future patches will add more data.
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| -rw-r--r-- | drivers/rtc/rtc-isl1208.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c index 263af3d8cd9f..d8e0670e12fc 100644 --- a/drivers/rtc/rtc-isl1208.c +++ b/drivers/rtc/rtc-isl1208.c @@ -79,6 +79,11 @@ enum { TYPE_ISL1219, }; +/* Device state */ +struct isl1208_state { + struct rtc_device *rtc; +}; + /* block read */ static int isl1208_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[], @@ -557,7 +562,7 @@ isl1208_rtc_interrupt(int irq, void *data) { unsigned long timeout = jiffies + msecs_to_jiffies(1000); struct i2c_client *client = data; - struct rtc_device *rtc = i2c_get_clientdata(client); + struct isl1208_state *isl1208 = i2c_get_clientdata(client); int handled = 0, sr, err; /* @@ -580,7 +585,7 @@ isl1208_rtc_interrupt(int irq, void *data) if (sr & ISL1208_REG_SR_ALM) { dev_dbg(&client->dev, "alarm!\n"); - rtc_update_irq(rtc, 1, RTC_IRQF | RTC_AF); + rtc_update_irq(isl1208->rtc, 1, RTC_IRQF | RTC_AF); /* Clear the alarm */ sr &= ~ISL1208_REG_SR_ALM; @@ -598,7 +603,7 @@ isl1208_rtc_interrupt(int irq, void *data) } if (sr & ISL1208_REG_SR_EVT) { - sysfs_notify(&rtc->dev.kobj, NULL, + sysfs_notify(&isl1208->rtc->dev.kobj, NULL, dev_attr_timestamp0.attr.name); dev_warn(&client->dev, "event detected"); handled = 1; @@ -723,7 +728,7 @@ static int isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id) { int rc = 0; - struct rtc_device *rtc; + struct isl1208_state *isl1208; int evdet_irq = -1; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) @@ -732,13 +737,17 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id) if (isl1208_i2c_validate_client(client) < 0) return -ENODEV; - rtc = devm_rtc_allocate_device(&client->dev); - if (IS_ERR(rtc)) - return PTR_ERR(rtc); + /* Allocate driver state, point i2c client data to it */ + isl1208 = devm_kzalloc(&client->dev, sizeof(*isl1208), GFP_KERNEL); + if (!isl1208) + return -ENOMEM; + i2c_set_clientdata(client, isl1208); - rtc->ops = &isl1208_rtc_ops; + isl1208->rtc = devm_rtc_allocate_device(&client->dev); + if (IS_ERR(isl1208->rtc)) + return PTR_ERR(isl1208->rtc); - i2c_set_clientdata(client, rtc); + isl1208->rtc->ops = &isl1208_rtc_ops; rc = isl1208_i2c_get_sr(client); if (rc < 0) { @@ -771,13 +780,13 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id) dev_err(&client->dev, "could not enable tamper detection\n"); return rc; } - rc = rtc_add_group(rtc, &isl1219_rtc_sysfs_files); + rc = rtc_add_group(isl1208->rtc, &isl1219_rtc_sysfs_files); if (rc) return rc; evdet_irq = of_irq_get_byname(np, "evdet"); } - rc = rtc_add_group(rtc, &isl1208_rtc_sysfs_files); + rc = rtc_add_group(isl1208->rtc, &isl1208_rtc_sysfs_files); if (rc) return rc; @@ -791,7 +800,7 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id) if (rc) return rc; - return rtc_register_device(rtc); + return rtc_register_device(isl1208->rtc); } static const struct i2c_device_id isl1208_id[] = { |