diff mbox

[v2,3/8] regulator: axp20x: support AXP806 variant

Message ID 20160827075544.26316-4-wens@csie.org (mailing list archive)
State Mainlined, archived
Headers show

Commit Message

Chen-Yu Tsai Aug. 27, 2016, 7:55 a.m. UTC 
The X-Powers AXP806 PMIC has a new set of buck and LDO regulators, and
also a switch. The buck regulators support teaming into multi-phase
groups, with A+B, A+B+C, D+E groupings.

Some registers controlling DCDC converter work settings are at different
offsets. Deal with them as well.

Add support for this new variant.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Changes since v1:

  - Use switch-case block in axp20x_is_polyphase_slave

---
 drivers/regulator/axp20x-regulator.c | 118 ++++++++++++++++++++++++++++++++---
 1 file changed, 111 insertions(+), 7 deletions(-)

Comments

Mark Brown Sept. 1, 2016, 8:23 p.m. UTC | #1 
On Sat, Aug 27, 2016 at 03:55:39PM +0800, Chen-Yu Tsai wrote:
> The X-Powers AXP806 PMIC has a new set of buck and LDO regulators, and
> also a switch. The buck regulators support teaming into multi-phase
> groups, with A+B, A+B+C, D+E groupings.

Acked-by: Mark Brown <broonie@kernel.org>
Chen-Yu Tsai Sept. 6, 2016, 4:03 a.m. UTC | #2 
Hi Lee,

On Fri, Sep 2, 2016 at 4:23 AM, Mark Brown <broonie@kernel.org> wrote:
> On Sat, Aug 27, 2016 at 03:55:39PM +0800, Chen-Yu Tsai wrote:
>> The X-Powers AXP806 PMIC has a new set of buck and LDO regulators, and
>> also a switch. The buck regulators support teaming into multi-phase
>> groups, with A+B, A+B+C, D+E groupings.
>
> Acked-by: Mark Brown <broonie@kernel.org>

Could you merge this through the mfd tree, along with the AXP806
mfd patches?

Thanks
ChenYu
Lee Jones Sept. 6, 2016, 8:12 a.m. UTC | #3 
On Tue, 06 Sep 2016, Chen-Yu Tsai wrote:
> On Fri, Sep 2, 2016 at 4:23 AM, Mark Brown <broonie@kernel.org> wrote:
> > On Sat, Aug 27, 2016 at 03:55:39PM +0800, Chen-Yu Tsai wrote:
> >> The X-Powers AXP806 PMIC has a new set of buck and LDO regulators, and
> >> also a switch. The buck regulators support teaming into multi-phase
> >> groups, with A+B, A+B+C, D+E groupings.
> >
> > Acked-by: Mark Brown <broonie@kernel.org>
> 
> Could you merge this through the mfd tree, along with the AXP806
> mfd patches?

Yes, I've marked this patch as "TODO".  Leave it with me.
Lee Jones Sept. 13, 2016, 1:04 p.m. UTC | #4 
Hold off on pulling this please Mark.
Chen-Yu Tsai Sept. 13, 2016, 2:45 p.m. UTC | #5 
Hi Lee,

On Tue, Sep 13, 2016 at 9:31 PM, Lee Jones <lee.jones@linaro.org> wrote:
> Mark,
>
> Try this instead.
>
> The following changes since commit 29b4817d4018df78086157ea3a55c1d9424a7cfc:
>
>   Linux 4.8-rc1 (2016-08-07 18:18:00 -0700)
>
> are available in the git repository at:
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git ib-mfd-regulator-v4.9
>
> for you to fetch changes up to 8824ee8573483e1c91691b5be3d3730e75551dce:
>
>   mfd: axp20x: Add support for AXP806 PMIC (2016-09-13 14:10:04 +0100)
>
> ----------------------------------------------------------------
> Immutable branch between MFD and Regualtor due for the v4.9 merge window
>
> ----------------------------------------------------------------
> Chen-Yu Tsai (3):
>       regulator: axp20x: Support AXP806 variant
>       mfd: axp20x: Add bindings for AXP806 PMIC
>       mfd: axp20x: Add support for AXP806 PMIC

The mfd driver patch should come before the regulator patch for bisectability.
I'm guessing Mark is fine with you taking it through your tree though.

Thanks!

ChenYu

>
>  Documentation/devicetree/bindings/mfd/axp20x.txt |  28 +++++-
>  drivers/mfd/axp20x-rsb.c                         |   1 +
>  drivers/mfd/axp20x.c                             |  72 ++++++++++++++
>  drivers/regulator/axp20x-regulator.c             | 118 +++++++++++++++++++++--
>  include/linux/mfd/axp20x.h                       |  60 ++++++++++++
>  5 files changed, 270 insertions(+), 9 deletions(-)
>
> --
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog
diff mbox

Patch

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 6d9ac76a772f..54382ef902c6 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -244,16 +244,64 @@  static const struct regulator_desc axp22x_drivevbus_regulator = {
 	.ops		= &axp20x_ops_sw,
 };
 
-static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
-	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
-	REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
+static const struct regulator_linear_range axp806_dcdca_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
+	REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
 };
 
-static const struct regulator_linear_range axp809_dldo1_ranges[] = {
+static const struct regulator_linear_range axp806_dcdcd_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000),
+	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,
+			BIT(0)),
+	AXP_DESC(AXP806, DCDCB, "dcdcb", "vinb", 1000, 2550, 50,
+		 AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(1)),
+	AXP_DESC_RANGES(AXP806, DCDCC, "dcdcc", "vinc", axp806_dcdca_ranges,
+			72, AXP806_DCDCC_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
+			BIT(2)),
+	AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges,
+			64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1,
+			BIT(3)),
+	AXP_DESC(AXP806, DCDCE, "dcdce", "vine", 1100, 3400, 100,
+		 AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(4)),
+	AXP_DESC(AXP806, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
+		 AXP806_ALDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(5)),
+	AXP_DESC(AXP806, ALDO2, "aldo2", "aldoin", 700, 3400, 100,
+		 AXP806_ALDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(6)),
+	AXP_DESC(AXP806, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
+		 AXP806_ALDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(7)),
+	AXP_DESC(AXP806, BLDO1, "bldo1", "bldoin", 700, 1900, 100,
+		 AXP806_BLDO1_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(0)),
+	AXP_DESC(AXP806, BLDO2, "bldo2", "bldoin", 700, 1900, 100,
+		 AXP806_BLDO2_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(1)),
+	AXP_DESC(AXP806, BLDO3, "bldo3", "bldoin", 700, 1900, 100,
+		 AXP806_BLDO3_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(2)),
+	AXP_DESC(AXP806, BLDO4, "bldo4", "bldoin", 700, 1900, 100,
+		 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,
+			32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2,
+			BIT(5)),
+	AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100,
+		 AXP806_CLDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(6)),
+	AXP_DESC_SW(AXP806, SW, "sw", "swin", AXP806_PWR_OUT_CTRL2, BIT(7)),
+};
+
+static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
+	REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
+};
+
 static const struct regulator_desc axp809_regulators[] = {
 	AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
 		 AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
@@ -278,7 +326,7 @@  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", axp809_dldo1_ranges,
+	AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp806_cldo2_ranges,
 			32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
 			BIT(3)),
 	AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
@@ -302,6 +350,7 @@  static const struct regulator_desc axp809_regulators[] = {
 static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 {
 	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+	unsigned int reg = AXP20X_DCDC_FREQ;
 	u32 min, max, def, step;
 
 	switch (axp20x->variant) {
@@ -312,6 +361,14 @@  static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 		def = 1500;
 		step = 75;
 		break;
+	case AXP806_ID:
+		/*
+		 * AXP806 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;
 	case AXP221_ID:
 	case AXP223_ID:
 	case AXP809_ID:
@@ -343,7 +400,7 @@  static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 
 	dcdcfreq = (dcdcfreq - min) / step;
 
-	return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
+	return regmap_update_bits(axp20x->regmap, reg,
 				  AXP20X_FREQ_DCDC_MASK, dcdcfreq);
 }
 
@@ -377,6 +434,7 @@  static int axp20x_regulator_parse_dt(struct platform_device *pdev)
 static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
 {
 	struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
+	unsigned int reg = AXP20X_DCDC_MODE;
 	unsigned int mask;
 
 	switch (axp20x->variant) {
@@ -392,6 +450,13 @@  static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work
 		workmode <<= ffs(mask) - 1;
 		break;
 
+	case AXP806_ID:
+		reg = AXP806_DCDC_MODE_CTRL2;
+		/*
+		 * AXP806 DCDC regulator IDs have the same range as AXP22X.
+		 * Fall through to the check below.
+		 * (See include/linux/mfd/axp20x.h)
+		 */
 	case AXP221_ID:
 	case AXP223_ID:
 	case AXP809_ID:
@@ -408,7 +473,34 @@  static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work
 		return -EINVAL;
 	}
 
-	return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
+	return regmap_update_bits(rdev->regmap, reg, mask, workmode);
+}
+
+/*
+ * This function checks whether a regulator is part of a poly-phase
+ * output setup based on the registers settings. Returns true if it is.
+ */
+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;
+
+	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));
+	}
+
+	return false;
 }
 
 static int axp20x_regulator_probe(struct platform_device *pdev)
@@ -440,6 +532,10 @@  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 AXP806_ID:
+		regulators = axp806_regulators;
+		nregulators = AXP806_REG_ID_MAX;
+		break;
 	case AXP809_ID:
 		regulators = axp809_regulators;
 		nregulators = AXP809_REG_ID_MAX;
@@ -458,6 +554,14 @@  static int axp20x_regulator_probe(struct platform_device *pdev)
 		struct regulator_desc *new_desc;
 
 		/*
+		 * If this regulator is a slave in a poly-phase setup,
+		 * skip it, as its controls are bound to the master
+		 * regulator and won't work.
+		 */
+		if (axp20x_is_polyphase_slave(axp20x, i))
+			continue;
+
+		/*
 		 * Regulators DC1SW and DC5LDO are connected internally,
 		 * so we have to handle their supply names separately.
 		 *