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path: root/drivers/rtc/rtc-ds1307.c
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2017-08-21rtc: ds1307: fix regmap configHeiner Kallweit1-1/+0
Current max_register setting breaks reading nvram on certain chips and also reading the standard registers on RX8130 where register map starts at 0x10. Signed-off-by: Heiner Kallweit <[email protected]> Fixes: 11e5890b5342 "rtc: ds1307: convert driver to regmap" Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-31rtc: ds1307: remove legacy check for "isil, irq2-can-wakeup-machine" propertyHeiner Kallweit1-7/+1
Commit 8b44f5be20fd ("ARM: dts: armada: replace isil,irq2-can-wakeup-machine with wakeup-source property") removed the last usage of "isil,irq2-can-wakeup-machine" almost two years ago. So I think we can get rid of supporting this legacy binding. Signed-off-by: Heiner Kallweit <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-07rtc: ds1307: remove ds1307_removeAlexandre Belloni1-6/+0
ds1307_remove() is now empty, remove it Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-07rtc: ds1307: use generic nvmemAlexandre Belloni1-66/+22
Instead of adding a binary sysfs attribute from the driver (which suffers from a race condition as the attribute appears after the device), use the core to register an nvmem device. Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-07rtc: ds1307: switch to rtc_register_deviceAlexandre Belloni1-2/+7
This removes a possible race condition and crash and allows for further improvement of the driver. Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-06rtc: ds1307: add ds1308 variantSean Nyekjaer1-0/+12
The ds1308 variant is very similar to the already supported ds1338 variant, it have more debug registers and a square wave clock output. Signed-off-by: Sean Nyekjaer <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-06rtc: ds1307: factor out century bit handlingHeiner Kallweit1-46/+27
The driver has lots of places with chip-specific code what doesn't necessarily facilitate maintenance. Let's describe chip-specific differences in century bit handling in struct chip_desc to improve this. Signed-off-by: Heiner Kallweit <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-07-05rtc: ds1307: use regmap_update_bits where applicableHeiner Kallweit1-62/+20
After the switch to regmap we can now make use of regmap_update_bits to simplify read/modify/write ops. Signed-off-by: Heiner Kallweit <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-06-24rtc: ds1307: Add support for Epson RX8130CEMarek Vasut1-0/+175
Add support for yet another RTC chip, Epson RX8130CE. This time around, the chip has slightly permutated registers and also the register starts at 0x10 instead of 0x0 . So far, we only support the RTC and NVRAM parts of the chip, Alarm and Timer is not supported. Signed-off-by: Marek Vasut <[email protected]> Cc: Alexandre Belloni <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Felipe Balbi <[email protected]> Cc: Nishanth Menon <[email protected]> Cc: Tony Lindgren <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-06-03rtc: ds1307: avoid using rtc-nameAlexandre Belloni1-1/+1
ds1307->rtc->name is a copy of ds1307->name, use it instead. Signed-off-by: Alexandre Belloni <[email protected]>
2017-05-31rtc: rtc-ds1307: enable support for mcp794xx as a wakeup source without IRQDavid Lowe1-1/+2
This patch extends the fixes for ds1337, ds1339, ds3231 in commit 8bc2a40730ec ("rtc: ds1307: add support for the DT property 'wakeup-source'") to mcp794xx devices, so that those parts can similarly be used as a wakeup source without an IRQ to the processor. Tested on Raspberry Pi ZeroW with MCP79400. Signed-off-by: David Lowe <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-05-26rtc: ds1307: convert driver to regmapHeiner Kallweit1-382/+221
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 <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-04-14rtc: ds1307: Add m41t0 to OF device ID tableAlexandre Belloni1-0/+4
m41t0 was added to the I2C device ID table but not the OF table. Fix that. Signed-off-by: Alexandre Belloni <[email protected]>
2017-04-14rtc: ds1307: support m41t0 variantStefan Agner1-0/+13
The m41t0 variant is very similar to the already supported m41t00 variant, with the notable exception of the oscillator fail bit. The data sheet notes: If the oscillator fail (OF) bit is internally set to a '1,' this indicates that the oscillator has either stopped, or was stopped for some period of time and can be used to judge the validity of the clock and date data. The bit will get cleared with a regular write of the system time, so no changes are needed to clear it. Signed-off-by: Stefan Agner <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2017-03-09rtc: ds1307: Add OF device ID tableJavier Martinez Canillas1-1/+67
The driver doesn't have a struct of_device_id table but supported devices are registered via Device Trees. This is working on the assumption that a I2C device registered via OF will always match a legacy I2C device ID and that the MODALIAS reported will always be of the form i2c:<device>. But this could change in the future so the correct approach is to have an OF device ID table if the devices are registered via OF. Signed-off-by: Javier Martinez Canillas <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-12-19rtc: ds1307: Add ACPI supportTin Huynh1-9/+43
This patch enables ACPI support for rtc-ds1307 driver. Signed-off-by: Tin Huynh <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-08-31rtc: ds1307: add Intersil ISL12057 supportAlexandre Belloni1-0/+6
Intersil ISL12057 is a drop-in replacement for DS1337. It can be supported by the ds1307 driver. Acked-by: Arnaud Ebalard <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-08-31rtc: ds1307: fix century bit supportAlexandre Belloni1-5/+43
Add an option to properly support the century bit of ds1337 and compatibles and ds1340. Because the driver had a bug until now, it is not possible to switch users to the fixed code directly as RTCs in the field will wrongly have the century bit set. Acked-by: Arnaud Ebalard <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-07-09rtc: simplify implementations of read_alarmUwe Kleine-König1-5/+0
Since commit d68778b80dd7 ("rtc: initialize output parameter for read alarm to "uninitialized"") there is no need to explicitly set unsupported members to -1. So drop the respective assignments from drivers. Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-07-09rtc: ds1307: Fix relying on reset value for weekdayKeerthy1-1/+27
The reset value of weekday is 0x1. This is wrong since the reset values of the day/month/year make up to Jan 1 2001. When computed weekday comes out to be Monday. On a scale of 1-7(Sunday - Saturday) it should be 0x2. So we should not be relying on the reset value. Hence compute the wday using the current date/month/year values. Check if reset wday is any different from the computed wday, If different then set the wday which we computed using date/month/year values. Document Referred: http://ww1.microchip.com/downloads/en/DeviceDoc/20002266F.pdf Fixes: 1d1945d261a2af "drivers/rtc/rtc-ds1307.c: add alarm support for mcp7941x chips" Signed-off-by: Keerthy <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-05-20rtc: ds1307: Remove CLK_IS_ROOTStephen Boyd1-2/+0
This flag is a no-op now (see commit 47b0eeb3dc8a "clk: Deprecate CLK_IS_ROOT", 2016-02-02) so remove it. Cc: Akinobu Mita <[email protected]> Cc: Michael Tatarinov <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-05-20rtc: ds1307: ensure that any pending alarm is cleared before a new alarm is ↵Nicolas Boullis1-5/+8
enabled If a previously-set alarm was disabled and then triggered, it may still be pending when a new alarm is configured. Then, if the alarm is enabled before the pending alarm is cleared, then an interrupt is immediately raised. Unfortunately, when the alarm is cleared and enabled during the same I²C block write, the chip (at least the DS1339 I have) considers that the alarm is enabled before it is cleared, and raises an interrupt. This patch ensures that the pending alarm is cleared before the alarm is enabled. Signed-off-by: Nicolas Boullis <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-05-20rtc: ds1307: fix ds1307_native_smbus_read_block_data functionNicolas Boullis1-2/+6
The i2c_smbus_read_i2c_block_data function returns 0 on success, not the number of bytes written. Hence, when there are 32 bytes or less to send, the ds1307_native_smbus_write_block_data function returns 0 on success, while it returns the number of bytes when there are more than 32. The ds1307_write_block_data always returns the number of bytes on success. Signed-off-by: Nicolas Boullis <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-04-21rtc: ds1307: Use irq when available for wakeup-source deviceNishanth Menon1-1/+1
With commit 8bc2a40730ec ("rtc: ds1307: add support for the DT property 'wakeup-source'") we lost the ability for rtc irq functionality for devices that are actually hooked on a real IRQ line and have capability to wakeup as well. This is not an expected behavior. So, instead of just not requesting IRQ, skip the IRQ requirement only if interrupts are not defined for the device. Fixes: 8bc2a40730ec ("rtc: ds1307: add support for the DT property 'wakeup-source'") Reported-by: Tony Lindgren <[email protected]> Cc: Michael Lange <[email protected]> Cc: Alexandre Belloni <[email protected]> Signed-off-by: Nishanth Menon <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-04-21rtc: ds1307: ds3231 temperature s16 overflowZhuang Yuyao1-2/+2
while retrieving temperature from ds3231, the result may be overflow since s16 is too small for a multiplication with 250. ie. if temp_buf[0] == 0x2d, the result (s16 temp) will be negative. Signed-off-by: Akinobu Mita <[email protected]> Tested-by: Michael Tatarinov <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-03-14rtc: ds1307: add clock provider support for DS3231Akinobu Mita1-1/+295
DS3231 has programmable square-wave output signal. This enables to use this feature as a clock provider of common clock framework. Signed-off-by: Akinobu Mita <[email protected]> Reviewed-by: Michael Turquette <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-02-04rtc: ds1307: add temperature sensor support for ds3231Akinobu Mita1-0/+88
DS3231 has the temperature registers with a resolution of 0.25 degree celsius. This enables to get the value through hwmon. # cat /sys/class/i2c-adapter/i2c-2/2-0068/hwmon/hwmon0/temp1_input 21000 Signed-off-by: Akinobu Mita <[email protected]> Acked-by: Guenter Roeck <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-02-04rtc: ds1307: add support for the DT property 'wakeup-source'Michael Lange1-2/+27
For RTC chips with no IRQ directly connected to the SoC, the RTC chip can be forced as a wakeup source by stating that explicitly in the device's .dts file using the "wakeup-source" boolean property. This will guarantee the 'wakealarm' sysfs entry is available on the device, if supported by the RTC. With these changes to the driver rtc-ds1307 and the necessary entries in the .dts file, I get an working ds1337 RTC on the Witty Pi extension board by UUGear for the Raspberry Pi. An example for the entry in the .dts file: rtc: ds1337@68 { compatible = "dallas,ds1337"; reg = <0x68>; wakeup-source; If the "wakeup-source" property is set, do not request an IRQ. Set also UIE mode to unsupported, to get a working 'hwclock' binary. Signed-off-by: Michael Lange <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2016-01-11rtc: use %ph for short hex dumpsRasmus Villemoes1-13/+4
This makes the generated code slightly smaller. Signed-off-by: Rasmus Villemoes <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-11-26rtc: ds1307: fix alarm reading at probe timeSimon Guinot1-5/+7
With the actual code, read_alarm() always returns -EINVAL when called during the RTC device registration. This prevents from retrieving an already configured alarm in hardware. This patch fixes the issue by moving the HAS_ALARM bit configuration (if supported by the hardware) above the rtc_device_register() call. Signed-off-by: Simon Guinot <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-11-25rtc: ds1307: fix kernel splat due to wakeup irq handlingFelipe Balbi1-33/+3
Since commit 3fffd1283927 ("i2c: allow specifying separate wakeup interrupt in device tree") we have automatic wakeup irq support for i2c devices. That commit missed the fact that rtc-1307 had its own wakeup irq handling and ended up introducing a kernel splat for at least Beagle x15 boards. Fix that by reverting original commit _and_ passing correct interrupt names on DTS so i2c-core can choose correct IRQ as wakeup. Now that we have automatic wakeirq support, we can revert the original commit which did it manually. Fixes the following warning: [ 10.346582] WARNING: CPU: 1 PID: 263 at linux/drivers/base/power/wakeirq.c:43 dev_pm_attach_wake_irq+0xbc/0xd4() [ 10.359244] rtc-ds1307 2-006f: wake irq already initialized Cc: Tony Lindgren <[email protected]> Cc: Nishanth Menon <[email protected]> Signed-off-by: Felipe Balbi <[email protected]> Acked-by: Tony Lindgren <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-11-08rtc: ds1307: Fix alarm programming for mcp794xxTero Kristo1-2/+2
mcp794xx alarm registers must be written in BCD format. However, the alarm programming logic neglected this by adding one to the value after bin2bcd conversion has been already done, writing bad values to month register in case the alarm being set is in October. In this case, the alarm month value becomes 0x0a instead of the expected 0x10. Fix by moving the +1 addition within the bin2bcd call also. Fixes: 1d1945d261a2 ("drivers/rtc/rtc-ds1307.c: add alarm support for mcp7941x chips") Signed-off-by: Tero Kristo <[email protected]> Acked-by: Nishanth Menon <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-09-05rtc: ds1307: clean up ds1307_nvram_read()/ds1307_nvram_write()Vladimir Zapolskiy1-14/+0
The change removes redundant sysfs binary file boundary checks, since this task is already done on caller side in fs/sysfs/file.c Signed-off-by: Vladimir Zapolskiy <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-09-05rtc: Drop owner assignment from i2c_driverKrzysztof Kozlowski1-1/+0
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-09-05rtc: ds1307: Support optional wakeup interrupt sourceNishanth Menon1-3/+33
With the recent pinctrl-single changes, SoCs such as Texas Instrument's OMAP processors can treat wake-up events from deeper idle states as interrupts. Let's add support for the optional second interrupt for wake-up using the generic wakeirq support added in commit 4990d4fe327b ("PM / Wakeirq: Add automated device wake IRQ handling") Finally, to pass the wake-up interrupt in the dts file, interrupts-extended property needs to be passed. This is similar in approach to commit 2a0b965cfb6e ("serial: omap: Add support for optional wake-up") + ee83bd3b6483 ("serial: omap: Switch wake-up interrupt to generic wakeirq") Signed-off-by: Nishanth Menon <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Acked-by: Tony Lindgren <[email protected]> Acked-by: Felipe Balbi <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-09-05rtc: ds1307: Sort the headersNishanth Menon1-5/+5
It is always a good practice to keep the #includes sorted Signed-off-by: Nishanth Menon <[email protected]> Acked-by: Felipe Balbi <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-09-05rtc: ds1307: Switch to managed irq allocationNishanth Menon1-6/+4
Since we are not doing anything fancy in remove function that requires us to sequence IRQ free operation, we might as well switch over to devm_ equivalent of managed IRQ allocation and remove the explicit free_irq since it'd be done automatically at remove. Signed-off-by: Nishanth Menon <[email protected]> Acked-by: Felipe Balbi <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-09-05rtc: ds1307: Convert to threaded IRQFelipe Balbi1-40/+19
The driver currently emulates the concept of threaded IRQ using a workqueue, which it really does not need to. Instead, switch over to threaded_irq handlers which is meant precisely for the same purpose. Signed-off-by: Felipe Balbi <[email protected]> Signed-off-by: Nishanth Menon <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2015-06-25rtc: ds1307: Enable the mcp794xx alarm after programming timeNishanth Menon1-6/+6
Alarm interrupt enable register is at offset 0x7, while the time registers for the alarm follow that. When we program Alarm interrupt enable prior to programming the time, it is possible that previous time value could be close or match at the time of alarm enable resulting in interrupt trigger which is unexpected (and does not match the time we expect it to trigger). To prevent this scenario from occuring, program the ALM0_EN bit only after the alarm time is appropriately programmed. Ofcourse, I2C programming is non-atomic, so there are loopholes where the interrupt wont trigger if the time requested is in the past at the time of programming the ALM0_EN bit. However, we will not have unexpected interrupts while the time is programmed after the interrupt are enabled. Signed-off-by: Nishanth Menon <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2014-12-10rtc: ds1307: add support for mcp7940x chipsTomas Novotny1-63/+64
MCP7940x is same RTC as MCP7941x. The difference is that MCP7941x chips contain additional EEPROM on a different i2c address. DS1307 driver already supports MCP7941x, so just add a new i2c device id and rename functions and defines accordingly. Signed-off-by: Tomas Novotny <[email protected]> Cc: Alessandro Zummo <[email protected]> Cc: Grant Likely <[email protected]> Cc: Rob Herring <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-10-14rtc: ds1307: add trickle charger device tree bindingMatti Vaittinen1-4/+63
Some DS13XX devices have "trickle chargers". Introduce a device tree binding for specifying the trickle charger configuration for ds1339. Only ds1339 dt binding is supported because this is the only chip I have. I _assume_ the code would have worked on other allready supported chips. However I cannot check the resistor values for the other chips or test them. For other chips the driver code works as earlier Eg. it does not check the dt bindings at all Signed-off-by: Matti Vaittinen <[email protected]> Cc: Rob Herring <[email protected]> Cc: Pawel Moll <[email protected]> Cc: Jason Cooper <[email protected]> Cc: Guenter Roeck <[email protected]> Cc: Alessandro Zummo <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Pavel Machek <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-03drivers/rtc/rtc-ds1307.c: add alarm support for mcp7941x chipsSimon Guinot1-1/+182
Add alarm support for the Microchip RTC devices MCP794xx. Note that two programmable alarms are provided by the chip but only one is used by the driver. Signed-off-by: Simon Guinot <[email protected]> Cc: Jason Cooper <[email protected]> Cc: Andrew Lunn <[email protected]> Cc: Gregory Clement <[email protected]> Cc: Sebastian Hesselbarth <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-03drivers/rtc/rtc-ds1307.c: fix sysfs wakealarm attribute creationSimon Guinot1-1/+1
In order to allow the creation of the sysfs attribute wakealarm, this patch moves the device_set_wakeup_capable() call above the RTC device registration. Signed-off-by: Simon Guinot <[email protected]> Cc: Jason Cooper <[email protected]> Cc: Andrew Lunn <[email protected]> Cc: Gregory Clement <[email protected]> Cc: Sebastian Hesselbarth <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2014-04-03rtc: fix potential race conditionAlessandro Zummo1-27/+33
RTC drivers must not return an error after device registration. [[email protected]: coding-style fixes] Signed-off-by: Alessandro Zummo <[email protected]> Reported-by: Ales Novak <[email protected]> Cc: Alexander Shiyan <[email protected]> Cc: Atsushi Nemoto <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Srikanth Srinivasan <[email protected]> Cc: Lee Jones <[email protected]> Cc: Sascha Hauer <[email protected]> Cc: Joonsoo Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-11-13drivers/rtc/rtc-ds1307.c: change variable type to boolPeter Senna Tschudin1-1/+1
The variable want_irq is only assigned the values true and false. Change its type to bool. The simplified semantic patch that find this problem is as follows (http://coccinelle.lip6.fr/): @exists@ type T; identifier b; @@ - T + bool b = ...; ... when any b = \(true\|false\) Signed-off-by: Peter Senna Tschudin <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-11-13drivers/rtc/rtc-ds1307.c: use dev_get_platdata()Jingoo Han1-1/+1
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-11-13drivers/rtc/rtc-ds1307.c: release irq on errorSachin Kamat1-2/+4
'client->irq' was not released on error. Fix it. Signed-off-by: Sachin Kamat <[email protected]> Cc: Jingoo Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-07-03rtc: rtc-ds1307: use devm_*() functionsJingoo Han1-26/+17
Use devm_*() functions to make cleanup paths simpler. Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-04-29drivers/rtc/rtc-ds1307.c: change sysfs function pointer assignmentSteffen Trumtrar1-2/+2
The current usage of commas instead of semicolons is not wrong, but affects the readability of the code. Also, the code would break, if someone puts something between those two assignments. Signed-off-by: Steffen Trumtrar <[email protected]> Cc: Austin Boyle <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-04-29rtc: rtc-ds1307: use dev_dbg() instead of pr_debug()Jingoo Han1-5/+5
dev_dbg() is preferred to pr_debug(). Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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