diff options
Diffstat (limited to 'extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0016-RTC-add-support-for-backup-battery-recharge.patch')
-rw-r--r-- | extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0016-RTC-add-support-for-backup-battery-recharge.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0016-RTC-add-support-for-backup-battery-recharge.patch b/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0016-RTC-add-support-for-backup-battery-recharge.patch new file mode 100644 index 00000000..cb685cc2 --- /dev/null +++ b/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0016-RTC-add-support-for-backup-battery-recharge.patch | |||
@@ -0,0 +1,55 @@ | |||
1 | From 6f432e1e39f276a41d600d1cc9cd17fc088877d8 Mon Sep 17 00:00:00 2001 | ||
2 | From: Steve Sakoman <steve@sakoman.com> | ||
3 | Date: Thu, 4 Feb 2010 12:26:22 -0800 | ||
4 | Subject: [PATCH 16/32] RTC: add support for backup battery recharge | ||
5 | |||
6 | --- | ||
7 | drivers/rtc/rtc-twl.c | 25 +++++++++++++++++++++++++ | ||
8 | 1 files changed, 25 insertions(+), 0 deletions(-) | ||
9 | |||
10 | diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c | ||
11 | index f9a2799..713b8ea 100644 | ||
12 | --- a/drivers/rtc/rtc-twl.c | ||
13 | +++ b/drivers/rtc/rtc-twl.c | ||
14 | @@ -30,6 +30,23 @@ | ||
15 | |||
16 | #include <linux/i2c/twl.h> | ||
17 | |||
18 | +/* | ||
19 | + * PM_RECEIVER block register offsets (use TWL4030_MODULE_PM_RECEIVER) | ||
20 | + */ | ||
21 | +#define REG_BB_CFG 0x12 | ||
22 | + | ||
23 | +/* PM_RECEIVER BB_CFG bitfields */ | ||
24 | +#define BIT_PM_RECEIVER_BB_CFG_BBCHEN 0x10 | ||
25 | +#define BIT_PM_RECEIVER_BB_CFG_BBSEL 0x0C | ||
26 | +#define BIT_PM_RECEIVER_BB_CFG_BBSEL_2V5 0x00 | ||
27 | +#define BIT_PM_RECEIVER_BB_CFG_BBSEL_3V0 0x04 | ||
28 | +#define BIT_PM_RECEIVER_BB_CFG_BBSEL_3V1 0x08 | ||
29 | +#define BIT_PM_RECEIVER_BB_CFG_BBSEL_3v2 0x0c | ||
30 | +#define BIT_PM_RECEIVER_BB_CFG_BBISEL 0x03 | ||
31 | +#define BIT_PM_RECEIVER_BB_CFG_BBISEL_25UA 0x00 | ||
32 | +#define BIT_PM_RECEIVER_BB_CFG_BBISEL_150UA 0x01 | ||
33 | +#define BIT_PM_RECEIVER_BB_CFG_BBISEL_500UA 0x02 | ||
34 | +#define BIT_PM_RECEIVER_BB_CFG_BBISEL_1MA 0x03 | ||
35 | |||
36 | /* | ||
37 | * RTC block register offsets (use TWL_MODULE_RTC) | ||
38 | @@ -495,6 +512,14 @@ static int __devinit twl_rtc_probe(struct platform_device *pdev) | ||
39 | if (ret < 0) | ||
40 | goto out2; | ||
41 | |||
42 | + /* enable backup battery charging */ | ||
43 | + /* use a conservative 25uA @ 3.1V */ | ||
44 | + ret = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, | ||
45 | + BIT_PM_RECEIVER_BB_CFG_BBCHEN | | ||
46 | + BIT_PM_RECEIVER_BB_CFG_BBSEL_3V1 | | ||
47 | + BIT_PM_RECEIVER_BB_CFG_BBISEL_25UA, | ||
48 | + REG_BB_CFG); | ||
49 | + | ||
50 | return ret; | ||
51 | |||
52 | out2: | ||
53 | -- | ||
54 | 1.6.6.1 | ||
55 | |||