[PATCH v3 08/12] regulator: axp20x-regulator: add support for AXP803

Icenowy Zheng
2017-04-17T11:57:43Z

AXP803 PMIC also have a series of regulators (DCDCs and LDOs)
controllable via I2C/RSB bus.

Add support for them.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
Changes in v2:
- Place AXP803 codes before AXP806/809 ones.
- Fixed some errors in regulator description.
- Reuse AXP803 DLDO2 range for AXP806 CLDO2 & AXP809 DLDO1.

drivers/regulator/axp20x-regulator.c | 153 ++++++++++++++++++++++++++++++-----
include/linux/mfd/axp20x.h | 37 +++++++++
2 files changed, 168 insertions(+), 22 deletions(-)

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 0b9d4e3e52c7..2ed15e4a7a82 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -244,6 +244,82 @@ static const struct regulator_desc axp22x_drivevbus_regulator = {
.ops = &axp20x_ops_sw,
};

+static const struct regulator_linear_range axp803_dcdc234_ranges[] = {
+ REGULATOR_LINEAR_RANGE(500000, 0x0, 0x46, 10000),
+ REGULATOR_LINEAR_RANGE(1220000, 0x47, 0x4b, 20000),
+};
+
+static const struct regulator_linear_range axp803_dcdc5_ranges[] = {
+ REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 10000),
+ REGULATOR_LINEAR_RANGE(1140000, 0x21, 0x44, 20000),
+};
+
+static const struct regulator_linear_range axp803_dcdc6_ranges[] = {
+ REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
+ REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
+};
+
+/* AXP806's CLDO2 and AXP809's DLDO1 shares the same range */
+static const struct regulator_linear_range axp803_dldo2_ranges[] = {
+ REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
+ REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
+};
+
+static const struct regulator_desc axp803_regulators[] = {
+ AXP_DESC(AXP803, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
+ AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
+ AXP_DESC_RANGES(AXP803, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
+ 76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+ BIT(1)),
+ AXP_DESC_RANGES(AXP803, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
+ 76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+ BIT(2)),
+ AXP_DESC_RANGES(AXP803, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
+ 76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+ BIT(3)),
+ AXP_DESC_RANGES(AXP803, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
+ 68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+ BIT(4)),
+ AXP_DESC_RANGES(AXP803, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
+ 72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+ BIT(5)),
+ /* secondary switchable output of DCDC1 */
+ AXP_DESC_SW(AXP803, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
+ BIT(7)),
+ AXP_DESC(AXP803, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
+ AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
+ AXP_DESC(AXP803, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
+ AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
+ AXP_DESC(AXP803, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
+ AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
+ AXP_DESC(AXP803, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
+ AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
+ AXP_DESC_RANGES(AXP803, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
+ 32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
+ BIT(4)),
+ AXP_DESC(AXP803, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
+ AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
+ AXP_DESC(AXP803, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
+ AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
+ AXP_DESC(AXP803, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
+ AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
+ AXP_DESC(AXP803, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
+ AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
+ AXP_DESC(AXP803, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
+ AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
+ AXP_DESC(AXP803, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
+ AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
+ AXP_DESC(AXP803, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
+ AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
+ AXP_DESC_IO(AXP803, LDO_IO0, "ldo_io0", "ips", 700, 3300, 100,
+ AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
+ AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
+ AXP_DESC_IO(AXP803, LDO_IO1, "ldo_io1", "ips", 700, 3300, 100,
+ AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
+ AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
+ AXP_DESC_FIXED(AXP803, RTC_LDO, "rtc_ldo", "ips", 3000),
+};
+
static const struct regulator_linear_range axp806_dcdca_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
@@ -254,11 +330,6 @@ static const struct regulator_linear_range axp806_dcdcd_ranges[] = {
REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000),
};

-static const struct regulator_linear_range axp806_cldo2_ranges[] = {
- REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
- REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
-};
-
static const struct regulator_desc axp806_regulators[] = {
AXP_DESC_RANGES(AXP806, DCDCA, "dcdca", "vina", axp806_dcdca_ranges,
72, AXP806_DCDCA_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
@@ -289,7 +360,7 @@ static const struct regulator_desc axp806_regulators[] = {
AXP806_BLDO4_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(3)),
AXP_DESC(AXP806, CLDO1, "cldo1", "cldoin", 700, 3300, 100,
AXP806_CLDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(4)),
- AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp806_cldo2_ranges,
+ AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp803_dldo2_ranges,
32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2,
BIT(5)),
AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100,
@@ -326,7 +397,7 @@ static const struct regulator_desc axp809_regulators[] = {
AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
- AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp806_cldo2_ranges,
+ AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp803_dldo2_ranges,
32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
BIT(3)),
AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
@@ -369,14 +440,21 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
def = 1500;
step = 75;
break;
- case AXP806_ID:
+ case AXP803_ID:
/*
- * AXP806 DCDC work frequency setting has the same range and
+ * AXP803 DCDC work frequency setting has the same range and
* step as AXP22X, but at a different register.
* Fall through to the check below.
* (See include/linux/mfd/axp20x.h)
*/
- reg = AXP806_DCDC_FREQ_CTRL;
+ reg = AXP803_DCDC_FREQ_CTRL;
+ case AXP806_ID:
+ /*
+ * AXP806 also have DCDC work frequency setting register at a
+ * different position.
+ */
+ if (axp20x->variant == AXP806_ID)
+ reg = AXP806_DCDC_FREQ_CTRL;
case AXP221_ID:
case AXP223_ID:
case AXP809_ID:
@@ -475,6 +553,14 @@ static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work
workmode <<= id - AXP22X_DCDC1;
break;

+ case AXP803_ID:
+ if (id < AXP803_DCDC1 || id > AXP803_DCDC6)
+ return -EINVAL;
+
+ mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP803_DCDC1);
+ workmode <<= id - AXP803_DCDC1;
+ break;
+
default:
/* should not happen */
WARN_ON(1);
@@ -492,20 +578,38 @@ static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
{
u32 reg = 0;

- /* Only AXP806 has poly-phase outputs */
- if (axp20x->variant != AXP806_ID)
- return false;
+ /*
+ * Currently in our supported AXP variants, only AXP806 and AXP803
+ * have polyphase regulators.
+ */
+ switch (axp20x->variant) {
+ case AXP803_ID:
+ regmap_read(axp20x->regmap, AXP803_POLYPHASE_CTRL, &reg);
+
+ switch (id) {
+ case AXP803_DCDC3:
+ return !!(reg & BIT(6));
+ case AXP803_DCDC6:
+ return !!(reg & BIT(7));
+ }
+ break;

- regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, &reg);
+ case AXP806_ID:
+ regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, &reg);
+
+ switch (id) {
+ case AXP806_DCDCB:
+ return (((reg & GENMASK(7, 6)) == BIT(6)) ||
+ ((reg & GENMASK(7, 6)) == BIT(7)));
+ case AXP806_DCDCC:
+ return ((reg & GENMASK(7, 6)) == BIT(7));
+ case AXP806_DCDCE:
+ return !!(reg & BIT(5));
+ }
+ break;

- switch (id) {
- case AXP806_DCDCB:
- return (((reg & GENMASK(7, 6)) == BIT(6)) ||
- ((reg & GENMASK(7, 6)) == BIT(7)));
- case AXP806_DCDCC:
- return ((reg & GENMASK(7, 6)) == BIT(7));
- case AXP806_DCDCE:
- return !!(reg & BIT(5));
+ default:
+ return false;
}

return false;
@@ -540,6 +644,10 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
"x-powers,drive-vbus-en");
break;
+ case AXP803_ID:
+ regulators = axp803_regulators;
+ nregulators = AXP803_REG_ID_MAX;
+ break;
case AXP806_ID:
regulators = axp806_regulators;
nregulators = AXP806_REG_ID_MAX;
@@ -579,6 +687,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
* name.
*/
if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
+ (regulators == axp803_regulators && i == AXP803_DC1SW) ||
(regulators == axp809_regulators && i == AXP809_DC1SW)) {
new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
GFP_KERNEL);
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index cde56cfe8446..965b027e31b3 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -119,6 +119,17 @@ enum axp20x_variants {
#define AXP806_BUS_ADDR_EXT 0xfe
#define AXP806_REG_ADDR_EXT 0xff

+#define AXP803_POLYPHASE_CTRL 0x14
+#define AXP803_FLDO1_V_OUT 0x1c
+#define AXP803_FLDO2_V_OUT 0x1d
+#define AXP803_DCDC1_V_OUT 0x20
+#define AXP803_DCDC2_V_OUT 0x21
+#define AXP803_DCDC3_V_OUT 0x22
+#define AXP803_DCDC4_V_OUT 0x23
+#define AXP803_DCDC5_V_OUT 0x24
+#define AXP803_DCDC6_V_OUT 0x25
+#define AXP803_DCDC_FREQ_CTRL 0x3b
+
/* Interrupt */
#define AXP152_IRQ1_EN 0x40
#define AXP152_IRQ2_EN 0x41
@@ -350,6 +361,32 @@ enum {
AXP809_REG_ID_MAX,
};

+enum {
+ AXP803_DCDC1 = 0,
+ AXP803_DCDC2,
+ AXP803_DCDC3,
+ AXP803_DCDC4,
+ AXP803_DCDC5,
+ AXP803_DCDC6,
+ AXP803_DC1SW,
+ AXP803_ALDO1,
+ AXP803_ALDO2,
+ AXP803_ALDO3,
+ AXP803_DLDO1,
+ AXP803_DLDO2,
+ AXP803_DLDO3,
+ AXP803_DLDO4,
+ AXP803_ELDO1,
+ AXP803_ELDO2,
+ AXP803_ELDO3,
+ AXP803_FLDO1,
+ AXP803_FLDO2,
+ AXP803_RTC_LDO,
+ AXP803_LDO_IO0,
+ AXP803_LDO_IO1,
+ AXP803_REG_ID_MAX,
+};
+
/* IRQs */
enum {
AXP152_IRQ_LDO0IN_CONNECT = 1,
--
2.12.2