Commit 8f2e6c22c751d28ac8027a7128f90b54240dcfa1

RTC: add support for backup battery recharge


30	30
31	31	#include <linux/i2c/twl.h>
32	32
	33	/*
	34	* PM_RECEIVER block register offsets (use TWL4030_MODULE_PM_RECEIVER)
	35	*/
	36	#define REG_BB_CFG 0x12
33	37
	38	/* PM_RECEIVER BB_CFG bitfields */
	39	#define BIT_PM_RECEIVER_BB_CFG_BBCHEN 0x10
	40	#define BIT_PM_RECEIVER_BB_CFG_BBSEL 0x0C
	41	#define BIT_PM_RECEIVER_BB_CFG_BBSEL_2V5 0x00
	42	#define BIT_PM_RECEIVER_BB_CFG_BBSEL_3V0 0x04
	43	#define BIT_PM_RECEIVER_BB_CFG_BBSEL_3V1 0x08
	44	#define BIT_PM_RECEIVER_BB_CFG_BBSEL_3v2 0x0c
	45	#define BIT_PM_RECEIVER_BB_CFG_BBISEL 0x03
	46	#define BIT_PM_RECEIVER_BB_CFG_BBISEL_25UA 0x00
	47	#define BIT_PM_RECEIVER_BB_CFG_BBISEL_150UA 0x01
	48	#define BIT_PM_RECEIVER_BB_CFG_BBISEL_500UA 0x02
	49	#define BIT_PM_RECEIVER_BB_CFG_BBISEL_1MA 0x03
	50
34	51	/*
35	52	* RTC block register offsets (use TWL_MODULE_RTC)
36	53	*/
…	…
524	524	ret = twl_rtc_read_u8(&rtc_irq_bits, REG_RTC_INTERRUPTS_REG);
525	525	if (ret < 0)
526	526	goto out2;
	527
	528	/* enable backup battery charging */
	529	/* use a conservative 25uA @ 3.1V */
	530	ret = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
	531	BIT_PM_RECEIVER_BB_CFG_BBCHEN \|
	532	BIT_PM_RECEIVER_BB_CFG_BBSEL_3V1 \|
	533	BIT_PM_RECEIVER_BB_CFG_BBISEL_25UA,
	534	REG_BB_CFG);
527	535
528	536	return ret;
529	537

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