talos-obmc-linux/drivers/rtc/rtc-ds1307.c, branch v3.4

drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled

2012-04-26T04:26:34+00:00

Add struct bin_attribute initialization to fix the following bug: rtc-ds1307 3-0068: rtc core: registered ds1307 as rtc0 BUG: key cfb14fcc not in .data! ------------[ cut here ]------------ WARNING: at kernel/lockdep.c:2986 sysfs_add_file_mode+0x84/0xdc() Modules linked in: [] (unwind_backtrace+0x0/0xf8) from [] (warn_slowpath_common+0x4c/0x64) [] (warn_slowpath_common+0x4c/0x64) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null+0x1c/0x24) from [] (sysfs_add_file_mode+0x84/0xdc) [] (sysfs_add_file_mode+0x84/0xdc) from [] (ds1307_probe+0x5e4/0x6ac) [] (ds1307_probe+0x5e4/0x6ac) from [] (i2c_device_probe+0xdc/0x108) [] (i2c_device_probe+0xdc/0x108) from [] (driver_probe_device+0x90/0x210) [] (driver_probe_device+0x90/0x210) from [] (__driver_attach+0x94/0x98) [] (__driver_attach+0x94/0x98) from [] (bus_for_each_dev+0x50/0x7c) [] (bus_for_each_dev+0x50/0x7c) from [] (bus_add_driver+0x184/0x244) [] (bus_add_driver+0x184/0x244) from [] (driver_register+0x78/0x12c) [] (driver_register+0x78/0x12c) from [] (i2c_register_driver+0x2c/0xb4) [] (i2c_register_driver+0x2c/0xb4) from [] (do_one_initcall+0x34/0x178) [] (do_one_initcall+0x34/0x178) from [] (kernel_init+0xdc/0x194) [] (kernel_init+0xdc/0x194) from [] (kernel_thread_exit+0x0/0x8) Since commit 6992f5334995af4 ("sysfs: Use one lockdep class per sysfs attribute") this initialization is required. Reported-by: Stefano Babic Tested-by: Stefano Babic Signed-off-by: Anatolij Gustschin Cc: Alessandro Zummo Cc: Stefano Babic Cc: Eric W. Biederman Cc: Greg Kroah-Hartman Acked-by: Wolfram Sang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: ds1307: generalise ram size and offset

2012-03-23T23:58:40+00:00

Generalise NVRAM to support RAM with other size and offset, such as the 64 bytes of SRAM on the mcp7941x. [rdunlap@xenotime.net: fix printk format warning] Signed-off-by: Austin Boyle Signed-off-by: Wolfram Sang Signed-off-by: Randy Dunlap Cc: David Anders Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: ds1307: comment and format cleanup

2012-03-23T23:58:40+00:00

Do some cleanup of the comment sections as well as correct some formatting issues reported by checkpatch.pl. Signed-off-by: David Anders Signed-off-by: Wolfram Sang Cc: Austin Boyle Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: ds1307: simplify irq setup code

2012-03-23T23:58:40+00:00

No need to have two seperate if-blocks for setting up the irq. Signed-off-by: Wolfram Sang Tested-by: David Anders Cc: Austin Boyle Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: ds1307: refactor chip_desc table

2012-03-23T23:58:40+00:00

The chip_desc table is suboptimal. Currently it requires an entry for every new chip type, even if it is empty. This has already been forgotten for the ds1388. Refactor the code, so new entries are only needed, when they chip type really needs a (non-empty) description. Also make the table visually more appealing. Signed-off-by: Wolfram Sang Cc: Austin Boyle Cc: David Anders Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: convert rtc i2c drivers to module_i2c_driver

2012-03-23T23:58:39+00:00

Factor out some boilerplate code for i2c driver registration into module_i2c_driver. Signed-off-by: Axel Lin Cc: Piotr Ziecik Cc: Alessandro Zummo Cc: Scott Wood Cc: Srikanth Srinivasan Cc: Mike Rapoport Cc: Sergey Lapin Cc: Roman Fietze Cc: Herbert Valerio Riedel Cc: Alexander Bigga Cc: Dale Farnsworth Cc: Gregory Hermant Cc: Wolfgang Grandegger Cc: Martyn Welch Cc: Byron Bradley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: add initial support for mcp7941x parts

2011-11-02T23:06:58+00:00

Add initial support for the microchip mcp7941x series of real time clocks. The mcp7941x series is generally compatible with the ds1307 and ds1337 rtc devices from dallas semiconductor. minor differences include a backup battery enable bit, and the polarity of the oscillator enable bit. Signed-off-by: David Anders Cc: Alessandro Zummo Reviewed-by: Wolfram Sang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers/rtc/rtc-ds1307.c: add support for RTC device pt7c4338

2011-06-28T01:00:12+00:00

PT7C4338 chip is being manufactured by Pericom Technology Inc. It is a serial real-time clock which provides: 1) Low-power clock/calendar. 2) Programmable square-wave output. It has 56 bytes of nonvolatile RAM. Its register set is same as that of rtc device: DS1307. Signed-off-by: Priyanka Jain Acked-by: Timur Tabi Reviewed-by: Wolfram Sang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

RTC: Convert rtc drivers to use the alarm_irq_enable method

2011-02-03T21:02:35+00:00

Some rtc drivers use the ioctl method instead of the alarm_irq_enable method for enabling alarm interupts. With the new virtualized RTC rework, its important for drivers to use the alarm_irq_enable instead. This patch converts the drivers that use the AIE ioctl method to use the alarm_irq_enable method. Other ioctl cmds are left untouched. I have not been able to test or even compile most of these drivers. Any help to make sure this change is correct would be appreciated! CC: Alessandro Zummo CC: Thomas Gleixner CC: Marcelo Roberto Jimenez Reported-by: Marcelo Roberto Jimenez Tested-by: Marcelo Roberto Jimenez Signed-off-by: John Stultz

i2c: Constify i2c_client where possible

2011-01-10T21:11:23+00:00

Helper functions for I2C and SMBus transactions don't modify the i2c_client that is passed to them, so it can be marked const. Signed-off-by: Jean Delvare