linux-toradex.git/drivers/rtc/rtc-m48t86.c, branch v5.4

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

rtc: stop validating rtc_time in .read_time

2018-03-02T09:09:58+00:00

The RTC core is always calling rtc_valid_tm after the read_time callback.
It is not necessary to call it just before returning from the callback.

Signed-off-by: Alexandre Belloni

rtc: m48t86: put m48t86_nvmem_cfg on the stack

2018-03-01T09:49:19+00:00

Move m48t86_nvmem_cfg to the stack of m48t86_rtc_probe. This results in a
very small code size reduction and make it safer on systems with two
similar RTCs:

   text	   data	    bss	    dec	    hex	filename
   1733	    164	      0	   1897	    769	drivers/rtc/rtc-m48t86.o.before
   1793	    100	      0	   1893	    765	drivers/rtc/rtc-m48t86.o.after

Signed-off-by: Alexandre Belloni

rtc: m48t86: call rtc_nvmem_register()

2018-03-01T09:49:18+00:00

Call rtc_nvmem_register instead of letting the core do it and stop using
the nvmem_config member of struct rtc_device.

Signed-off-by: Alexandre Belloni

rtc: m48t86: use generic nvmem

2017-10-12T22:10:10+00:00

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

rtc: m48t86: switch to rtc_register_device

2017-10-12T22:10:08+00:00

This allows for future improvement of the driver.

Signed-off-by: Alexandre Belloni

rtc: m48t86: remove unused platform_data

2017-02-21T20:23:13+00:00

All users of this driver have been updated to allow the driver to
manage it's own resources and do the read/write operations internally.
The m48t86_ops are no longer used.

Remove the platform_data header and the support code in the driver.

Signed-off-by: H Hartley Sweeten 
Signed-off-by: Alexandre Belloni

rtc: m48t86: verify that the RTC is actually present

2017-02-21T17:16:31+00:00

The RTC is an optional feature at purchase time on some Technologic
Systems boards. Verify that it actually exists by checking if the
last two bytes of the NVRAM can be changed.

Signed-off-by: H Hartley Sweeten 
Signed-off-by: Alexandre Belloni

rtc: m48t86: add NVRAM support

2017-02-12T00:08:01+00:00

This RTC has 114 bytes of NVRAM. Provide access to it via a binary
sysfs 'nvram' attribute file.

Signed-off-by: H Hartley Sweeten 
Signed-off-by: Alexandre Belloni

rtc: m48t86: allow driver to manage its resources

2017-02-12T00:07:38+00:00

Allow this driver to, optionally, manage it's own resources and do the
read/write operations if the platform does not provide them.

Signed-off-by: H Hartley Sweeten 
Signed-off-by: Alexandre Belloni