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regulator: twl: add clk32kg to twl-regulator 

In OMAP4 Blaze and Panda, 32KHz clock to WLAN is supplied from Phoenix
TWL6030. The 32KHz clock state (ON/OFF) is configured in
CLK32KG_CFG_[GRP, TRANS, STATE] register. This follows the same register
programming model as other regulators in TWL6030. So add CLK32KG as pseudo
regulator.

Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Balaji T K 2011-02-10 18:44:50 +05:30 committed by Samuel Ortiz
parent dae2db30c1
commit 8e6de4a302
3 changed files with 29 additions and 1 deletions
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4
drivers/mfd/twl-core.c
View File

@ -864,6 +864,10 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features)
child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_bci() && pdata->bci &&

24
drivers/regulator/twl-regulator.c
View File

@ -475,6 +475,13 @@ static struct regulator_ops twlfixed_ops = {
.get_status = twlreg_get_status,
};
static struct regulator_ops twl6030_fixed_resource = {
.enable = twlreg_enable,
.disable = twlreg_disable,
.is_enabled = twlreg_is_enabled,
.get_status = twlreg_get_status,
};
/*----------------------------------------------------------------------*/
#define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
@ -538,6 +545,20 @@ static struct regulator_ops twlfixed_ops = {
}, \
}
#define TWL6030_FIXED_RESOURCE(label, offset, num, turnon_delay, remap_conf) { \
.base = offset, \
.id = num, \
.delay = turnon_delay, \
.remap = remap_conf, \
.desc = { \
.name = #label, \
.id = TWL6030_REG_##label, \
.ops = &twl6030_fixed_resource, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}, \
}
/*
* We list regulators here if systems need some level of
* software control over them after boot.
@ -577,7 +598,8 @@ static struct twlreg_info twl_regs[] = {
TWL6030_FIXED_LDO(VANA, 0x50, 2100, 15, 0, 0x21),
TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 16, 0, 0x21),
TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 17, 0, 0x21),
TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 18, 0, 0x21)
TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 18, 0, 0x21),
TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 48, 0, 0x21),
};
static int __devinit twlreg_probe(struct platform_device *pdev)

2
include/linux/i2c/twl.h
View File

@ -698,6 +698,7 @@ struct twl4030_platform_data {
struct regulator_init_data *vana;
struct regulator_init_data *vcxio;
struct regulator_init_data *vusb;
struct regulator_init_data *clk32kg;
};
/*----------------------------------------------------------------------*/
@ -777,5 +778,6 @@ static inline int twl4030charger_usb_en(int enable) { return 0; }
/* INTERNAL LDOs */
#define TWL6030_REG_VRTC 47
#define TWL6030_REG_CLK32KG 48
#endif /* End of __TWL4030_H */