target/linux/generic/backport-4.9/095-v4.13-0001-rtc-ds1307-add-ds1308-variant.patch

   1 From 300a7735becf55f7fd18f8cd3dc3b945a0cab712 Mon Sep 17 00:00:00 2001
   2 From: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
   3 Date: Thu, 8 Jun 2017 12:36:54 +0200
   4 Subject: rtc: ds1307: add ds1308 variant
   5
   6 The ds1308 variant is very similar to the already supported ds1338
   7 variant, it have more debug registers and a square wave clock output.
   8
   9 Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
  10 Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
  11 ---
  12  drivers/rtc/rtc-ds1307.c | 12 ++++++++++++
  13  1 file changed, 12 insertions(+)
  14
  15 --- a/drivers/rtc/rtc-ds1307.c
  16 +++ b/drivers/rtc/rtc-ds1307.c
  17 @@ -31,6 +31,7 @@
  18   */
  19  enum ds_type {
  20         ds_1307,
  21 +       ds_1308,
  22         ds_1337,
  23         ds_1338,
  24         ds_1339,
  25 @@ -144,6 +145,10 @@ static struct chip_desc chips[last_ds_ty
  26                 .nvram_offset   = 8,
  27                 .nvram_size     = 56,
  28         },
  29 +       [ds_1308] = {
  30 +               .nvram_offset   = 8,
  31 +               .nvram_size     = 56,
  32 +       },
  33         [ds_1337] = {
  34                 .alarm          = 1,
  35         },
  36 @@ -175,6 +180,7 @@ static struct chip_desc chips[last_ds_ty
  37
  38  static const struct i2c_device_id ds1307_id[] = {
  39         { "ds1307", ds_1307 },
  40 +       { "ds1308", ds_1308 },
  41         { "ds1337", ds_1337 },
  42         { "ds1338", ds_1338 },
  43         { "ds1339", ds_1339 },
  44 @@ -1488,6 +1494,7 @@ read_rtc:
  45                         goto read_rtc;
  46                 }
  47                 break;
  48 +       case ds_1308:
  49         case ds_1338:
  50                 /* clock halted?  turn it on, so clock can tick. */
  51                 if (tmp & DS1307_BIT_CH)