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Subject[RFC][PATCH 3/4] OMAP4: PMIC: Add support for twl6030 regulators
Date
From: Rajendra Nayak <rnayak@ti.com>

This patch updates the regulator driver to add support
for TWL6030 PMIC specific LDO regulators.
SMPS resources are not yet supported for TWL6030 and
also .set_mode and .get_status for LDO's are yet to
be implemented.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
---
drivers/regulator/Kconfig | 4 +-
drivers/regulator/Makefile | 2 +-
drivers/regulator/twl-regulator.c | 106 +++++++++++++++++++++++++++++++------
include/linux/i2c/twl.h | 35 ++++++++++++
4 files changed, 127 insertions(+), 20 deletions(-)

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f431779..9e989a4 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -75,9 +75,9 @@ config REGULATOR_MAX1586
regulator via I2C bus. The provided regulator is suitable
for PXA27x chips to control VCC_CORE and VCC_USIM voltages.

-config REGULATOR_TWL4030
+config REGULATOR_TWL
bool "TI TWL4030/TWL5030/TPS695x0 PMIC"
- depends on TWL4030_CORE
+ depends on TWL4030_CORE || TWL6030_CORE
help
This driver supports the voltage regulators provided by
this family of companion chips.
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 0653ce8..712f733 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -11,7 +11,7 @@ obj-$(CONFIG_REGULATOR_USERSPACE_CONSUMER) += userspace-consumer.o
obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o
obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o
obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
-obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
+obj-$(CONFIG_REGULATOR_TWL) += twl-regulator.o
obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c
index d01aa4e..4152f2c 100644
--- a/drivers/regulator/twl-regulator.c
+++ b/drivers/regulator/twl-regulator.c
@@ -52,27 +52,38 @@ struct twlreg_info {
* The first three registers of all power resource banks help hardware to
* manage the various resource groups.
*/
+/* Common offset in TWL4030/6030 */
#define VREG_GRP 0
+/* TWL4030 register offsets */
#define VREG_TYPE 1
#define VREG_REMAP 2
-#define VREG_DEDICATED 3 /* LDO control */
-
+#define VREG_DEDICATED 3
+/* TWL6030 register offsets */
+#define VREG_TRANS 1
+#define VREG_STATE 2
+#define VREG_VOLTAGE 3
+/* TWL6030 Misc register offsets */
+#define VREG_BC_ALL 1
+#define VREG_BC_REF 2
+#define VREG_BC_PROC 3
+#define VREG_BC_CLK_RST 4

static inline int
-twlreg_read(struct twlreg_info *info, unsigned offset)
+twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
{
u8 value;
int status;

- status = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER,
+ status = twl_i2c_read_u8(slave_subgp,
&value, info->base + offset);
return (status < 0) ? status : value;
}

static inline int
-twlreg_write(struct twlreg_info *info, unsigned offset, u8 value)
+twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
+ u8 value)
{
- return twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
+ return twl_i2c_write_u8(slave_subgp,
value, info->base + offset);
}

@@ -82,17 +93,23 @@ twlreg_write(struct twlreg_info *info, unsigned offset, u8 value)

static int twlreg_grp(struct regulator_dev *rdev)
{
- return twlreg_read(rdev_get_drvdata(rdev), VREG_GRP);
+ return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_SLAVE_LDO,
+ VREG_GRP);
}

/*
* Enable/disable regulators by joining/leaving the P1 (processor) group.
* We assume nobody else is updating the DEV_GRP registers.
*/
-
+#ifdef CONFIG_TWL4030_CORE
#define P3_GRP BIT(7) /* "peripherals" */
#define P2_GRP BIT(6) /* secondary processor, modem, etc */
#define P1_GRP BIT(5) /* CPU/Linux */
+#elif CONFIG_TWL6030_CORE
+#define P3_GRP BIT(2) /* secondary processor, modem, etc */
+#define P2_GRP BIT(1) /* "peripherals" */
+#define P1_GRP BIT(0) /* CPU/Linux */
+#endif

static int twlreg_is_enabled(struct regulator_dev *rdev)
{
@@ -109,12 +126,12 @@ static int twlreg_enable(struct regulator_dev *rdev)
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp;

- grp = twlreg_read(info, VREG_GRP);
+ grp = twlreg_read(info, TWL_MODULE_PM_SLAVE_LDO, VREG_GRP);
if (grp < 0)
return grp;

grp |= P1_GRP;
- return twlreg_write(info, VREG_GRP, grp);
+ return twlreg_write(info, TWL_MODULE_PM_SLAVE_LDO, VREG_GRP, grp);
}

static int twlreg_disable(struct regulator_dev *rdev)
@@ -122,12 +139,12 @@ static int twlreg_disable(struct regulator_dev *rdev)
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp;

- grp = twlreg_read(info, VREG_GRP);
+ grp = twlreg_read(info, TWL_MODULE_PM_SLAVE_LDO, VREG_GRP);
if (grp < 0)
return grp;

grp &= ~P1_GRP;
- return twlreg_write(info, VREG_GRP, grp);
+ return twlreg_write(info, TWL_MODULE_PM_SLAVE_LDO, VREG_GRP, grp);
}

static int twlreg_get_status(struct regulator_dev *rdev)
@@ -260,7 +277,29 @@ static const u16 VSIM_VSEL_table[] = {
static const u16 VDAC_VSEL_table[] = {
1200, 1300, 1800, 1800,
};
-
+static const u16 VAUX1_6030_VSEL_table[] = {
+ 1000, 1300, 1800, 2500,
+ 2800, 2900, 3000, 3000,
+};
+static const u16 VAUX2_6030_VSEL_table[] = {
+ 1200, 1800, 2500, 2750,
+ 2800, 2800, 2800, 2800,
+};
+static const u16 VAUX3_6030_VSEL_table[] = {
+ 1000, 1200, 1300, 1800,
+ 2500, 2800, 3000, 3000,
+};
+static const u16 VMMC_VSEL_table[] = {
+ 1200, 1800, 2800, 2900,
+ 3000, 3000, 3000, 3000,
+};
+static const u16 VPP_VSEL_table[] = {
+ 1800, 1900, 2000, 2100,
+ 2200, 2300, 2400, 2500,
+};
+static const u16 VUSIM_VSEL_table[] = {
+ 1200, 1800, 2500, 2900,
+};

static int twlldo_list_voltage(struct regulator_dev *rdev, unsigned index)
{
@@ -288,7 +327,8 @@ twlldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)

/* use the first in-range value */
if (min_uV <= uV && uV <= max_uV)
- return twlreg_write(info, VREG_DEDICATED, vsel);
+ return twlreg_write(info, TWL_MODULE_PM_SLAVE_LDO,
+ VREG_VOLTAGE, vsel);
}

return -EDOM;
@@ -297,7 +337,8 @@ twlldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
static int twlldo_get_voltage(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
- int vsel = twlreg_read(info, VREG_DEDICATED);
+ int vsel = twlreg_read(info, TWL_MODULE_PM_SLAVE_LDO,
+ VREG_VOLTAGE);

if (vsel < 0)
return vsel;
@@ -316,9 +357,10 @@ static struct regulator_ops twlldo_ops = {
.disable = twlreg_disable,
.is_enabled = twlreg_is_enabled,

+#ifdef CONFIG_TWL4030_CORE
.set_mode = twlreg_set_mode,
-
.get_status = twlreg_get_status,
+#endif
};

/*----------------------------------------------------------------------*/
@@ -349,9 +391,10 @@ static struct regulator_ops twlfixed_ops = {
.disable = twlreg_disable,
.is_enabled = twlreg_is_enabled,

+#ifdef CONFIG_TWL4030_CORE
.set_mode = twlreg_set_mode,
-
.get_status = twlreg_get_status,
+#endif
};

/*----------------------------------------------------------------------*/
@@ -360,6 +403,10 @@ static struct regulator_ops twlfixed_ops = {
TWL_ADJUSTABLE_LDO(label, offset, num, TWL4030)
#define TWL4030_FIXED_LDO(label, offset, mVolts, num) \
TWL_FIXED_LDO(label, offset, mVolts, num, TWL4030)
+#define TWL6030_ADJUSTABLE_LDO(label, offset, num) \
+ TWL_ADJUSTABLE_LDO(label, offset, num, TWL6030)
+#define TWL6030_FIXED_LDO(label, offset, mVolts, num) \
+ TWL_FIXED_LDO(label, offset, mVolts, num, TWL6030)

#define TWL_ADJUSTABLE_LDO(label, offset, num, family) { \
.base = offset, \
@@ -395,6 +442,7 @@ static struct regulator_ops twlfixed_ops = {
* software control over them after boot.
*/
static struct twlreg_info twl_regs[] = {
+#ifdef CONFIG_TWL4030_CORE
TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1),
TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2),
TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2),
@@ -420,6 +468,30 @@ static struct twlreg_info twl_regs[] = {
TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18),
TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19),
/* VUSBCP is managed *only* by the USB subchip */
+#elif CONFIG_TWL6030_CORE
+ TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x84, 1),
+ TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x88, 2),
+ TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x8c, 3),
+ TWL6030_ADJUSTABLE_LDO(VMMC, 0x98, 4),
+ TWL6030_ADJUSTABLE_LDO(VPP, 0x9c, 5),
+ /*
+ TWL6030_ADJUSTABLE_LDO(VRTC, 0x00, 6),
+ */
+ TWL6030_ADJUSTABLE_LDO(VUSIM, 0xa4, 7),
+ /* SMPS
+ TWL6030_SMPS(VDD1, 0x4b, 8),
+ TWL6030_SMPS(VDD2, 0x55, 9),
+ TWL6030_SMPS(VDD3, 0x63, 10),
+ TWL6030_SMPS(VMEM, 0x00, 11),
+ TWL6030_SMPS(V1V29, 0x00, 12),
+ TWL6030_SMPS(V1V8, 0x00, 13),
+ TWL6030_SMPS(V2V1, 0x00, 14),
+ */
+ TWL6030_FIXED_LDO(VANA, 0x80, 2100, 15),
+ TWL6030_FIXED_LDO(VCXIO, 0x90, 1800, 16),
+ TWL6030_FIXED_LDO(VDAC, 0x94, 1800, 17),
+ TWL6030_FIXED_LDO(VUSB, 0xa0, 3300, 18)
+#endif
};

static int twlreg_probe(struct platform_device *pdev)
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 5ec9070..b128831 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -87,6 +87,7 @@
#define TWL_MODULE_INT TWL4030_MODULE_INT
#define TWL_MODULE_PM_MASTER TWL4030_MODULE_PM_MASTER
#define TWL_MODULE_PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
+#define TWL_MODULE_PM_SLAVE_LDO TWL_MODULE_PM_RECEIVER
#define TWL_MODULE_RTC TWL4030_MODULE_RTC
#define TWL_MODULE_SECURED_REG TWL4030_MODULE_SECURED_REG

@@ -406,6 +407,12 @@ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
#define MSG_SINGULAR(devgrp, id, state) \
((devgrp) << 13 | 0 << 12 | (id) << 4 | (state))

+#define MSG_BROADCAST_ALL(devgrp, state) \
+ ((devgrp) << 5 | (state))
+
+#define MSG_BROADCAST_REF MSG_BROADCAST_ALL
+#define MSG_BROADCAST_PROV MSG_BROADCAST_ALL
+#define MSG_BROADCAST__CLK_RST MSG_BROADCAST_ALL
/*----------------------------------------------------------------------*/

struct twl_bci_platform_data {
@@ -516,6 +523,7 @@ int twl4030_sih_setup(int module);
* VIO is generally fixed.
*/

+/* TWL4030 SMPS/LDO's */
/* EXTERNAL dc-to-dc buck converters */
#define TWL4030_REG_VDD1 0
#define TWL4030_REG_VDD2 1
@@ -542,6 +550,33 @@ int twl4030_sih_setup(int module);
#define TWL4030_REG_VUSB1V8 18
#define TWL4030_REG_VUSB3V1 19

+/* TWL6030 SMPS/LDO's */
+/* EXTERNAL dc-to-dc buck convertor contollable via SR */
+#define TWL6030_REG_VDD1 0
+#define TWL6030_REG_VDD2 1
+#define TWL6030_REG_VDD3 2
+
+/* Non SR compliant dc-to-dc buck convertors */
+#define TWL6030_REG_VMEM 3
+#define TWL6030_REG_V2V1 4
+#define TWL6030_REG_V1V29 5
+#define TWL6030_REG_V1V8 6
+
+/* EXTERNAL LDOs */
+#define TWL6030_REG_VAUX1_6030 7
+#define TWL6030_REG_VAUX2_6030 8
+#define TWL6030_REG_VAUX3_6030 9
+#define TWL6030_REG_VMMC 10
+#define TWL6030_REG_VPP 11
+#define TWL6030_REG_VUSIM 12
+#define TWL6030_REG_VANA 13
+#define TWL6030_REG_VCXIO 14
+#define TWL6030_REG_VDAC 15
+#define TWL6030_REG_VUSB 16
+
+/* INTERNAL LDOs */
+#define TWL6030_REG_VRTC 17
+
int twl_int_mask_reset(u8 bit_mask, u8 offset);
int twl_int_mask_set(u8 bit_mask, u8 offset);
int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
--
1.5.4.7


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