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@xxxxxx>
---
v2 changes:
implement TWL6030_FIXED_RESOURCE for clk32kg
drivers/mfd/twl-core.c | 4 ++++
drivers/regulator/twl-regulator.c | 24 +++++++++++++++++++++++-
include/linux/i2c/twl.h | 2 ++
3 files changed, 29 insertions(+), 1 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index a35fa7d..7d909cc 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -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 &&
diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c
index bd332cf..6a29285 100644
--- a/drivers/regulator/twl-regulator.c
+++ b/drivers/regulator/twl-regulator.c
@@ -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)
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 61b9609..7086e1e 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -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 */
--
1.7.0.4
--
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