[PATCH v5 00/13] Add support for AXP192 PMIC

[PATCH v5 00/13] Add support for AXP192 PMIC

[Aidan MacDonald]

This series adds support for the AXP192 PMIC to the AXP20x MFD driver
framework, including support for regulators, ADCs, and AC/USB/battery
power supplies.

This depends on the "regmap-irq cleanups and refactoring" series[1]
for the ->get_irq_reg() operation, needed by the AXP192's IRQ chip.

Changes in v5:

* Drop everything related to GPIO / pin control. It seems that driver
  is going to require further discussion while the rest of the series
  probably won't need much at this point, and I'd rather not hold the
  whole series up over one driver.

Older changelogs can be found in v4[2].

[1]: https://lore.kernel.org/lkml/20220623211420.918875-1-aidanmacdonald.0x0@gmail.com/
[2]: https://lore.kernel.org/lkml/20220629143046.213584-1-aidanmacdonald.0x0@gmail.com/

Aidan MacDonald (13):
  dt-bindings: mfd: add bindings for AXP192 MFD device
  dt-bindings: iio: adc: axp209: Add AXP192 compatible
  dt-bindings: power: supply: axp20x: Add AXP192 compatible
  dt-bindings: power: axp20x-battery: Add AXP192 compatible
  mfd: axp20x: Add support for AXP192
  regulator: axp20x: Add support for AXP192
  iio: adc: axp20x_adc: Minor code cleanups
  iio: adc: axp20x_adc: Replace adc_en2 flag with adc_en2_mask field
  iio: adc: axp20x_adc: Add support for AXP192
  power: supply: axp20x_usb_power: Add support for AXP192
  power: axp20x_battery: Add constant charge current table
  power: axp20x_battery: Support battery status without fuel gauge
  power: axp20x_battery: Add support for AXP192

 .../bindings/iio/adc/x-powers,axp209-adc.yaml |  18 +
 .../bindings/mfd/x-powers,axp152.yaml         |   1 +
 .../x-powers,axp20x-battery-power-supply.yaml |   1 +
 .../x-powers,axp20x-usb-power-supply.yaml     |   1 +
 drivers/iio/adc/axp20x_adc.c                  | 356 ++++++++++++++++--
 drivers/mfd/axp20x-i2c.c                      |   2 +
 drivers/mfd/axp20x.c                          | 141 +++++++
 drivers/power/supply/axp20x_battery.c         | 142 ++++++-
 drivers/power/supply/axp20x_usb_power.c       |  84 ++++-
 drivers/regulator/axp20x-regulator.c          | 100 ++++-
 include/linux/mfd/axp20x.h                    |  84 +++++
 11 files changed, 856 insertions(+), 74 deletions(-)


base-commit: e35e5b6f695d241ffb1d223207da58a1fbcdff4b
prerequisite-patch-id: a45db1cac7537769dc10087fc61f977dc150744c
prerequisite-patch-id: cb8aa009c7bb7a6575eb05e3af65342dc8d0efa3
prerequisite-patch-id: 8d32557e53b894d1fb17250d2d0eb3673f068d37
prerequisite-patch-id: 5b293867ef81e3697892ac51b941bb53680a70dc
prerequisite-patch-id: 8138d39a4817e804141bfe8c2ad37d9c55456a40
prerequisite-patch-id: b01216129e887519d441cf556bbc75c397871773
prerequisite-patch-id: b5dcf0c0609113c2d81bc557c1fc95ef23f40811
prerequisite-patch-id: 622ca1c10e851b1889aaa567c1d2a0adf43cca44
prerequisite-patch-id: d28c5187f9bf0e43f27b2f4aa8dcf7fd91842a03
prerequisite-patch-id: d29d54b756be73304f844abeeaf9b46a5c0119d5
prerequisite-patch-id: 5d405790ae89c0831b46a359f86e94bac5a67470
prerequisite-patch-id: c90120e79acbb52ffa148bfedee1df9d35b5eced
-- 
2.35.1

[PATCH v5 01/13] dt-bindings: mfd: add bindings for AXP192 MFD device

[Aidan MacDonald]

The AXP192 is another X-Powers PMIC similar to the existing ones.

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml b/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
index 3a53bae611bc..33c9b1b3cc04 100644
--- a/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
+++ b/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
@@ -84,6 +84,7 @@ properties:
     oneOf:
       - enum:
           - x-powers,axp152
+          - x-powers,axp192
           - x-powers,axp202
           - x-powers,axp209
           - x-powers,axp221
-- 
2.35.1

[PATCH v5 02/13] dt-bindings: iio: adc: axp209: Add AXP192 compatible

[Aidan MacDonald]

The AXP192 is identical to the AXP20x, except for two additional
GPIO ADC channels.

Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 .../bindings/iio/adc/x-powers,axp209-adc.yaml  | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml b/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml
index d6d3d8590171..1a68e650ac7d 100644
--- a/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/x-powers,axp209-adc.yaml
@@ -14,6 +14,23 @@ description: |
   Device is a child of an axp209 multifunction device
   ADC channels and their indexes per variant:
 
+  AXP192
+  ------
+   0 | acin_v
+   1 | acin_i
+   2 | vbus_v
+   3 | vbus_i
+   4 | pmic_temp
+   5 | gpio0_v
+   6 | gpio1_v
+   7 | gpio2_v
+   8 | gpio3_v
+   9 | ipsout_v
+  10 | batt_v
+  11 | batt_chrg_i
+  12 | batt_dischrg_i
+  13 | ts_v
+
   AXP209
   ------
    0 | acin_v
@@ -50,6 +67,7 @@ description: |
 properties:
   compatible:
     oneOf:
+      - const: x-powers,axp192-adc
       - const: x-powers,axp209-adc
       - const: x-powers,axp221-adc
       - const: x-powers,axp813-adc
-- 
2.35.1

[PATCH v5 03/13] dt-bindings: power: supply: axp20x: Add AXP192 compatible

[Aidan MacDonald]

The AXP192's USB power supply is similar to the AXP202 but it has
different USB current limits and a different offset for the VBUS
status register.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 .../bindings/power/supply/x-powers,axp20x-usb-power-supply.yaml  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-usb-power-supply.yaml b/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-usb-power-supply.yaml
index 0c371b55c9e1..e800b3b97f0d 100644
--- a/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-usb-power-supply.yaml
+++ b/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-usb-power-supply.yaml
@@ -22,6 +22,7 @@ properties:
   compatible:
     oneOf:
       - enum:
+          - x-powers,axp192-usb-power-supply
           - x-powers,axp202-usb-power-supply
           - x-powers,axp221-usb-power-supply
           - x-powers,axp223-usb-power-supply
-- 
2.35.1

[PATCH v5 04/13] dt-bindings: power: axp20x-battery: Add AXP192 compatible

[Aidan MacDonald]

The AXP192's battery charger is similar to the others supported by
the axp20x_battery driver.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 .../power/supply/x-powers,axp20x-battery-power-supply.yaml       | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-battery-power-supply.yaml b/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-battery-power-supply.yaml
index d055428ae39f..b7347683a07e 100644
--- a/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-battery-power-supply.yaml
+++ b/Documentation/devicetree/bindings/power/supply/x-powers,axp20x-battery-power-supply.yaml
@@ -20,6 +20,7 @@ allOf:
 properties:
   compatible:
     oneOf:
+      - const: x-powers,axp192-battery-power-supply
       - const: x-powers,axp202-battery-power-supply
       - const: x-powers,axp209-battery-power-supply
       - const: x-powers,axp221-battery-power-supply
-- 
2.35.1

[PATCH v5 05/13] mfd: axp20x: Add support for AXP192

[Aidan MacDonald]

The AXP192 PMIC is similar to the AXP202/AXP209, but with different
regulators, additional GPIOs, and a different IRQ register layout.

Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/mfd/axp20x-i2c.c   |   2 +
 drivers/mfd/axp20x.c       | 141 +++++++++++++++++++++++++++++++++++++
 include/linux/mfd/axp20x.h |  84 ++++++++++++++++++++++
 3 files changed, 227 insertions(+)

diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
index 00ab48018d8d..9ada58fad77f 100644
--- a/drivers/mfd/axp20x-i2c.c
+++ b/drivers/mfd/axp20x-i2c.c
@@ -62,6 +62,7 @@ static int axp20x_i2c_remove(struct i2c_client *i2c)
 #ifdef CONFIG_OF
 static const struct of_device_id axp20x_i2c_of_match[] = {
 	{ .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
+	{ .compatible = "x-powers,axp192", .data = (void *)AXP192_ID },
 	{ .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
 	{ .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
 	{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
@@ -75,6 +76,7 @@ MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
 
 static const struct i2c_device_id axp20x_i2c_id[] = {
 	{ "axp152", 0 },
+	{ "axp192", 0 },
 	{ "axp202", 0 },
 	{ "axp209", 0 },
 	{ "axp221", 0 },
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 8161a5dc68e8..3586bb13d7fc 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -34,6 +34,7 @@
 
 static const char * const axp20x_model_names[] = {
 	"AXP152",
+	"AXP192",
 	"AXP202",
 	"AXP209",
 	"AXP221",
@@ -92,6 +93,35 @@ static const struct regmap_access_table axp20x_volatile_table = {
 	.n_yes_ranges	= ARRAY_SIZE(axp20x_volatile_ranges),
 };
 
+static const struct regmap_range axp192_writeable_ranges[] = {
+	regmap_reg_range(AXP192_DATACACHE(0), AXP192_DATACACHE(5)),
+	regmap_reg_range(AXP192_PWR_OUT_CTRL, AXP192_IRQ5_STATE),
+	regmap_reg_range(AXP20X_DCDC_MODE, AXP192_N_RSTO_CTRL),
+	regmap_reg_range(AXP20X_CC_CTRL, AXP20X_CC_CTRL),
+};
+
+static const struct regmap_range axp192_volatile_ranges[] = {
+	regmap_reg_range(AXP20X_PWR_INPUT_STATUS, AXP192_USB_OTG_STATUS),
+	regmap_reg_range(AXP192_IRQ1_STATE, AXP192_IRQ4_STATE),
+	regmap_reg_range(AXP192_IRQ5_STATE, AXP192_IRQ5_STATE),
+	regmap_reg_range(AXP20X_ACIN_V_ADC_H, AXP20X_IPSOUT_V_HIGH_L),
+	regmap_reg_range(AXP20X_TIMER_CTRL, AXP20X_TIMER_CTRL),
+	regmap_reg_range(AXP192_GPIO2_0_STATE, AXP192_GPIO2_0_STATE),
+	regmap_reg_range(AXP192_GPIO4_3_STATE, AXP192_GPIO4_3_STATE),
+	regmap_reg_range(AXP192_N_RSTO_CTRL, AXP192_N_RSTO_CTRL),
+	regmap_reg_range(AXP20X_CHRG_CC_31_24, AXP20X_CC_CTRL),
+};
+
+static const struct regmap_access_table axp192_writeable_table = {
+	.yes_ranges	= axp192_writeable_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(axp192_writeable_ranges),
+};
+
+static const struct regmap_access_table axp192_volatile_table = {
+	.yes_ranges	= axp192_volatile_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(axp192_volatile_ranges),
+};
+
 /* AXP22x ranges are shared with the AXP809, as they cover the same range */
 static const struct regmap_range axp22x_writeable_ranges[] = {
 	regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
@@ -173,6 +203,19 @@ static const struct resource axp152_pek_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
 };
 
+static const struct resource axp192_ac_power_supply_resources[] = {
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_ACIN_PLUGIN, "ACIN_PLUGIN"),
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_ACIN_REMOVAL, "ACIN_REMOVAL"),
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_ACIN_OVER_V, "ACIN_OVER_V"),
+};
+
+static const struct resource axp192_usb_power_supply_resources[] = {
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_PLUGIN, "VBUS_PLUGIN"),
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_REMOVAL, "VBUS_REMOVAL"),
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_VALID, "VBUS_VALID"),
+	DEFINE_RES_IRQ_NAMED(AXP192_IRQ_VBUS_NOT_VALID, "VBUS_NOT_VALID"),
+};
+
 static const struct resource axp20x_ac_power_supply_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_PLUGIN, "ACIN_PLUGIN"),
 	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_REMOVAL, "ACIN_REMOVAL"),
@@ -245,6 +288,15 @@ static const struct regmap_config axp152_regmap_config = {
 	.cache_type	= REGCACHE_RBTREE,
 };
 
+static const struct regmap_config axp192_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.wr_table	= &axp192_writeable_table,
+	.volatile_table	= &axp192_volatile_table,
+	.max_register	= AXP20X_CC_CTRL,
+	.cache_type	= REGCACHE_RBTREE,
+};
+
 static const struct regmap_config axp20x_regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
@@ -304,6 +356,42 @@ static const struct regmap_irq axp152_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP152, GPIO0_INPUT,		2, 0),
 };
 
+static const struct regmap_irq axp192_regmap_irqs[] = {
+	INIT_REGMAP_IRQ(AXP192, ACIN_OVER_V,		0, 7),
+	INIT_REGMAP_IRQ(AXP192, ACIN_PLUGIN,		0, 6),
+	INIT_REGMAP_IRQ(AXP192, ACIN_REMOVAL,		0, 5),
+	INIT_REGMAP_IRQ(AXP192, VBUS_OVER_V,		0, 4),
+	INIT_REGMAP_IRQ(AXP192, VBUS_PLUGIN,		0, 3),
+	INIT_REGMAP_IRQ(AXP192, VBUS_REMOVAL,		0, 2),
+	INIT_REGMAP_IRQ(AXP192, VBUS_V_LOW,		0, 1),
+	INIT_REGMAP_IRQ(AXP192, BATT_PLUGIN,		1, 7),
+	INIT_REGMAP_IRQ(AXP192, BATT_REMOVAL,	        1, 6),
+	INIT_REGMAP_IRQ(AXP192, BATT_ENT_ACT_MODE,	1, 5),
+	INIT_REGMAP_IRQ(AXP192, BATT_EXIT_ACT_MODE,	1, 4),
+	INIT_REGMAP_IRQ(AXP192, CHARG,		        1, 3),
+	INIT_REGMAP_IRQ(AXP192, CHARG_DONE,		1, 2),
+	INIT_REGMAP_IRQ(AXP192, BATT_TEMP_HIGH,	        1, 1),
+	INIT_REGMAP_IRQ(AXP192, BATT_TEMP_LOW,	        1, 0),
+	INIT_REGMAP_IRQ(AXP192, DIE_TEMP_HIGH,	        2, 7),
+	INIT_REGMAP_IRQ(AXP192, CHARG_I_LOW,		2, 6),
+	INIT_REGMAP_IRQ(AXP192, DCDC1_V_LONG,	        2, 5),
+	INIT_REGMAP_IRQ(AXP192, DCDC2_V_LONG,	        2, 4),
+	INIT_REGMAP_IRQ(AXP192, DCDC3_V_LONG,	        2, 3),
+	INIT_REGMAP_IRQ(AXP192, PEK_SHORT,		2, 1),
+	INIT_REGMAP_IRQ(AXP192, PEK_LONG,		2, 0),
+	INIT_REGMAP_IRQ(AXP192, N_OE_PWR_ON,		3, 7),
+	INIT_REGMAP_IRQ(AXP192, N_OE_PWR_OFF,	        3, 6),
+	INIT_REGMAP_IRQ(AXP192, VBUS_VALID,		3, 5),
+	INIT_REGMAP_IRQ(AXP192, VBUS_NOT_VALID,	        3, 4),
+	INIT_REGMAP_IRQ(AXP192, VBUS_SESS_VALID,	3, 3),
+	INIT_REGMAP_IRQ(AXP192, VBUS_SESS_END,	        3, 2),
+	INIT_REGMAP_IRQ(AXP192, LOW_PWR_LVL,	        3, 0),
+	INIT_REGMAP_IRQ(AXP192, TIMER,			4, 7),
+	INIT_REGMAP_IRQ(AXP192, GPIO2_INPUT,		4, 2),
+	INIT_REGMAP_IRQ(AXP192, GPIO1_INPUT,		4, 1),
+	INIT_REGMAP_IRQ(AXP192, GPIO0_INPUT,		4, 0),
+};
+
 static const struct regmap_irq axp20x_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V,		0, 7),
 	INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN,		0, 6),
@@ -514,6 +602,32 @@ static const struct regmap_irq_chip axp152_regmap_irq_chip = {
 	.num_regs		= 3,
 };
 
+static unsigned int axp192_get_irq_reg(struct regmap_irq_chip_data *data,
+				       unsigned int base, int index)
+{
+	/* linear mapping for IRQ1 to IRQ4 */
+	if (index < 4)
+		return base + index;
+
+	/* handle IRQ5 separately */
+	if (base == AXP192_IRQ1_EN)
+		return AXP192_IRQ5_EN;
+
+	return AXP192_IRQ5_STATE;
+}
+
+static const struct regmap_irq_chip axp192_regmap_irq_chip = {
+	.name			= "axp192_irq_chip",
+	.status_base		= AXP192_IRQ1_STATE,
+	.ack_base		= AXP192_IRQ1_STATE,
+	.unmask_base		= AXP192_IRQ1_EN,
+	.init_ack_masked	= true,
+	.irqs			= axp192_regmap_irqs,
+	.num_irqs		= ARRAY_SIZE(axp192_regmap_irqs),
+	.num_regs		= 5,
+	.get_irq_reg		= axp192_get_irq_reg,
+};
+
 static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
 	.name			= "axp20x_irq_chip",
 	.status_base		= AXP20X_IRQ1_STATE,
@@ -588,6 +702,27 @@ static const struct regmap_irq_chip axp809_regmap_irq_chip = {
 	.num_regs		= 5,
 };
 
+static const struct mfd_cell axp192_cells[] = {
+	{
+		.name		= "axp192-adc",
+		.of_compatible	= "x-powers,axp192-adc",
+	}, {
+		.name		= "axp20x-battery-power-supply",
+		.of_compatible	= "x-powers,axp192-battery-power-supply",
+	}, {
+		.name		= "axp20x-ac-power-supply",
+		.of_compatible	= "x-powers,axp202-ac-power-supply",
+		.num_resources	= ARRAY_SIZE(axp192_ac_power_supply_resources),
+		.resources	= axp192_ac_power_supply_resources,
+	}, {
+		.name		= "axp20x-usb-power-supply",
+		.of_compatible	= "x-powers,axp192-usb-power-supply",
+		.num_resources	= ARRAY_SIZE(axp192_usb_power_supply_resources),
+		.resources	= axp192_usb_power_supply_resources,
+	},
+	{	.name		= "axp20x-regulator" },
+};
+
 static const struct mfd_cell axp20x_cells[] = {
 	{
 		.name		= "axp20x-gpio",
@@ -865,6 +1000,12 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
 		axp20x->regmap_cfg = &axp152_regmap_config;
 		axp20x->regmap_irq_chip = &axp152_regmap_irq_chip;
 		break;
+	case AXP192_ID:
+		axp20x->nr_cells = ARRAY_SIZE(axp192_cells);
+		axp20x->cells = axp192_cells;
+		axp20x->regmap_cfg = &axp192_regmap_config;
+		axp20x->regmap_irq_chip = &axp192_regmap_irq_chip;
+		break;
 	case AXP202_ID:
 	case AXP209_ID:
 		axp20x->nr_cells = ARRAY_SIZE(axp20x_cells);
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index 9ab0e2fca7ea..c9a9ee8ec246 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -12,6 +12,7 @@
 
 enum axp20x_variants {
 	AXP152_ID = 0,
+	AXP192_ID,
 	AXP202_ID,
 	AXP209_ID,
 	AXP221_ID,
@@ -24,6 +25,7 @@ enum axp20x_variants {
 	NR_AXP20X_VARIANTS,
 };
 
+#define AXP192_DATACACHE(m)		(0x06 + (m))
 #define AXP20X_DATACACHE(m)		(0x04 + (m))
 
 /* Power supply */
@@ -45,6 +47,13 @@ enum axp20x_variants {
 #define AXP152_DCDC_FREQ		0x37
 #define AXP152_DCDC_MODE		0x80
 
+#define AXP192_USB_OTG_STATUS		0x04
+#define AXP192_PWR_OUT_CTRL		0x12
+#define AXP192_DCDC2_V_OUT		0x23
+#define AXP192_DCDC1_V_OUT		0x26
+#define AXP192_DCDC3_V_OUT		0x27
+#define AXP192_LDO2_3_V_OUT		0x28
+
 #define AXP20X_PWR_INPUT_STATUS		0x00
 #define AXP20X_PWR_OP_MODE		0x01
 #define AXP20X_USB_OTG_STATUS		0x02
@@ -139,6 +148,17 @@ enum axp20x_variants {
 #define AXP152_IRQ2_STATE		0x49
 #define AXP152_IRQ3_STATE		0x4a
 
+#define AXP192_IRQ1_EN			0x40
+#define AXP192_IRQ2_EN			0x41
+#define AXP192_IRQ3_EN			0x42
+#define AXP192_IRQ4_EN			0x43
+#define AXP192_IRQ1_STATE		0x44
+#define AXP192_IRQ2_STATE		0x45
+#define AXP192_IRQ3_STATE		0x46
+#define AXP192_IRQ4_STATE		0x47
+#define AXP192_IRQ5_EN			0x4a
+#define AXP192_IRQ5_STATE		0x4d
+
 #define AXP20X_IRQ1_EN			0x40
 #define AXP20X_IRQ2_EN			0x41
 #define AXP20X_IRQ3_EN			0x42
@@ -153,6 +173,11 @@ enum axp20x_variants {
 #define AXP20X_IRQ6_STATE		0x4d
 
 /* ADC */
+#define AXP192_GPIO2_V_ADC_H		0x68
+#define AXP192_GPIO2_V_ADC_L		0x69
+#define AXP192_GPIO3_V_ADC_H		0x6a
+#define AXP192_GPIO3_V_ADC_L		0x6b
+
 #define AXP20X_ACIN_V_ADC_H		0x56
 #define AXP20X_ACIN_V_ADC_L		0x57
 #define AXP20X_ACIN_I_ADC_H		0x58
@@ -182,6 +207,8 @@ enum axp20x_variants {
 #define AXP20X_IPSOUT_V_HIGH_L		0x7f
 
 /* Power supply */
+#define AXP192_GPIO30_IN_RANGE		0x85
+
 #define AXP20X_DCDC_MODE		0x80
 #define AXP20X_ADC_EN1			0x82
 #define AXP20X_ADC_EN2			0x83
@@ -210,6 +237,16 @@ enum axp20x_variants {
 #define AXP152_PWM1_FREQ_Y		0x9c
 #define AXP152_PWM1_DUTY_CYCLE		0x9d
 
+#define AXP192_GPIO0_CTRL		0x90
+#define AXP192_LDO_IO0_V_OUT		0x91
+#define AXP192_GPIO1_CTRL		0x92
+#define AXP192_GPIO2_CTRL		0x93
+#define AXP192_GPIO2_0_STATE		0x94
+#define AXP192_GPIO4_3_CTRL		0x95
+#define AXP192_GPIO4_3_STATE		0x96
+#define AXP192_GPIO2_0_PULL		0x97
+#define AXP192_N_RSTO_CTRL		0x9e
+
 #define AXP20X_GPIO0_CTRL		0x90
 #define AXP20X_LDO5_V_OUT		0x91
 #define AXP20X_GPIO1_CTRL		0x92
@@ -287,6 +324,17 @@ enum axp20x_variants {
 #define AXP288_FG_TUNE5             0xed
 
 /* Regulators IDs */
+enum {
+	AXP192_DCDC1 = 0,
+	AXP192_DCDC2,
+	AXP192_DCDC3,
+	AXP192_LDO1,
+	AXP192_LDO2,
+	AXP192_LDO3,
+	AXP192_LDO_IO0,
+	AXP192_REG_ID_MAX
+};
+
 enum {
 	AXP20X_LDO1 = 0,
 	AXP20X_LDO2,
@@ -440,6 +488,42 @@ enum {
 	AXP152_IRQ_GPIO0_INPUT,
 };
 
+enum axp192_irqs {
+	AXP192_IRQ_ACIN_OVER_V = 1,
+	AXP192_IRQ_ACIN_PLUGIN,
+	AXP192_IRQ_ACIN_REMOVAL,
+	AXP192_IRQ_VBUS_OVER_V,
+	AXP192_IRQ_VBUS_PLUGIN,
+	AXP192_IRQ_VBUS_REMOVAL,
+	AXP192_IRQ_VBUS_V_LOW,
+	AXP192_IRQ_BATT_PLUGIN,
+	AXP192_IRQ_BATT_REMOVAL,
+	AXP192_IRQ_BATT_ENT_ACT_MODE,
+	AXP192_IRQ_BATT_EXIT_ACT_MODE,
+	AXP192_IRQ_CHARG,
+	AXP192_IRQ_CHARG_DONE,
+	AXP192_IRQ_BATT_TEMP_HIGH,
+	AXP192_IRQ_BATT_TEMP_LOW,
+	AXP192_IRQ_DIE_TEMP_HIGH,
+	AXP192_IRQ_CHARG_I_LOW,
+	AXP192_IRQ_DCDC1_V_LONG,
+	AXP192_IRQ_DCDC2_V_LONG,
+	AXP192_IRQ_DCDC3_V_LONG,
+	AXP192_IRQ_PEK_SHORT = 22,
+	AXP192_IRQ_PEK_LONG,
+	AXP192_IRQ_N_OE_PWR_ON,
+	AXP192_IRQ_N_OE_PWR_OFF,
+	AXP192_IRQ_VBUS_VALID,
+	AXP192_IRQ_VBUS_NOT_VALID,
+	AXP192_IRQ_VBUS_SESS_VALID,
+	AXP192_IRQ_VBUS_SESS_END,
+	AXP192_IRQ_LOW_PWR_LVL = 31,
+	AXP192_IRQ_TIMER,
+	AXP192_IRQ_GPIO2_INPUT = 37,
+	AXP192_IRQ_GPIO1_INPUT,
+	AXP192_IRQ_GPIO0_INPUT,
+};
+
 enum {
 	AXP20X_IRQ_ACIN_OVER_V = 1,
 	AXP20X_IRQ_ACIN_PLUGIN,
-- 
2.35.1

[PATCH v5 06/13] regulator: axp20x: Add support for AXP192

[Aidan MacDonald]

Add support for the AXP192 PMIC.

Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/regulator/axp20x-regulator.c | 100 ++++++++++++++++++++++++---
 1 file changed, 91 insertions(+), 9 deletions(-)

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index d260c442b788..ee79a9ed0249 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -27,6 +27,29 @@
 #include <linux/regulator/machine.h>
 #include <linux/regulator/of_regulator.h>
 
+#define AXP192_GPIO0_FUNC_MASK		GENMASK(2, 0)
+
+#define AXP192_IO_ENABLED		0x02
+#define AXP192_IO_DISABLED		0x06
+
+#define AXP192_WORKMODE_DCDC1_MASK	BIT_MASK(3)
+#define AXP192_WORKMODE_DCDC2_MASK	BIT_MASK(2)
+#define AXP192_WORKMODE_DCDC3_MASK	BIT_MASK(1)
+
+#define AXP192_DCDC1_V_OUT_MASK		GENMASK(6, 0)
+#define AXP192_DCDC2_V_OUT_MASK		GENMASK(5, 0)
+#define AXP192_DCDC3_V_OUT_MASK		GENMASK(6, 0)
+#define AXP192_LDO2_V_OUT_MASK		GENMASK(7, 4)
+#define AXP192_LDO3_V_OUT_MASK		GENMASK(3, 0)
+#define AXP192_LDO_IO0_V_OUT_MASK	GENMASK(7, 4)
+
+#define AXP192_PWR_OUT_EXTEN_MASK	BIT_MASK(6)
+#define AXP192_PWR_OUT_DCDC2_MASK	BIT_MASK(4)
+#define AXP192_PWR_OUT_LDO3_MASK	BIT_MASK(3)
+#define AXP192_PWR_OUT_LDO2_MASK	BIT_MASK(2)
+#define AXP192_PWR_OUT_DCDC3_MASK	BIT_MASK(1)
+#define AXP192_PWR_OUT_DCDC1_MASK	BIT_MASK(0)
+
 #define AXP20X_GPIO0_FUNC_MASK		GENMASK(3, 0)
 #define AXP20X_GPIO1_FUNC_MASK		GENMASK(3, 0)
 
@@ -375,25 +398,32 @@ static int axp20x_set_ramp_delay(struct regulator_dev *rdev, int ramp)
 
 	switch (axp20x->variant) {
 	case AXP209_ID:
-		if (id == AXP20X_DCDC2) {
+		if (id == AXP20X_LDO3) {
 			slew_rates = axp209_dcdc2_ldo3_slew_rates;
 			rate_count = ARRAY_SIZE(axp209_dcdc2_ldo3_slew_rates);
 			reg = AXP20X_DCDC2_LDO3_V_RAMP;
-			mask = AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_RATE_MASK |
-			       AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_EN_MASK;
+			mask = AXP20X_DCDC2_LDO3_V_RAMP_LDO3_RATE_MASK |
+			       AXP20X_DCDC2_LDO3_V_RAMP_LDO3_EN_MASK;
 			enable = (ramp > 0) ?
-				 AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_EN : 0;
+				 AXP20X_DCDC2_LDO3_V_RAMP_LDO3_EN : 0;
 			break;
 		}
 
-		if (id == AXP20X_LDO3) {
+		fallthrough;
+
+	case AXP192_ID:
+		/*
+		 * AXP192 and AXP209 share the same DCDC2 ramp configuration
+		 */
+		if ((axp20x->variant == AXP209_ID && id == AXP20X_DCDC2) ||
+		    (axp20x->variant == AXP192_ID && id == AXP192_DCDC2)) {
 			slew_rates = axp209_dcdc2_ldo3_slew_rates;
 			rate_count = ARRAY_SIZE(axp209_dcdc2_ldo3_slew_rates);
 			reg = AXP20X_DCDC2_LDO3_V_RAMP;
-			mask = AXP20X_DCDC2_LDO3_V_RAMP_LDO3_RATE_MASK |
-			       AXP20X_DCDC2_LDO3_V_RAMP_LDO3_EN_MASK;
+			mask = AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_RATE_MASK |
+			       AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_EN_MASK;
 			enable = (ramp > 0) ?
-				 AXP20X_DCDC2_LDO3_V_RAMP_LDO3_EN : 0;
+				 AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_EN : 0;
 			break;
 		}
 
@@ -415,7 +445,8 @@ static int axp20x_set_ramp_delay(struct regulator_dev *rdev, int ramp)
 			if (ramp > slew_rates[i])
 				break;
 
-			if (id == AXP20X_DCDC2)
+			if ((axp20x->variant == AXP209_ID && id == AXP20X_DCDC2) ||
+			    (axp20x->variant == AXP192_ID && id == AXP192_DCDC2))
 				cfg = AXP20X_DCDC2_LDO3_V_RAMP_DCDC2_RATE(i);
 			else
 				cfg = AXP20X_DCDC2_LDO3_V_RAMP_LDO3_RATE(i);
@@ -511,6 +542,29 @@ static const struct regulator_ops axp20x_ops_sw = {
 	.is_enabled		= regulator_is_enabled_regmap,
 };
 
+static const struct regulator_desc axp192_regulators[] = {
+	AXP_DESC(AXP192, DCDC1, "dcdc1", "vin1", 700, 3500, 25,
+		 AXP192_DCDC1_V_OUT, AXP192_DCDC1_V_OUT_MASK,
+		 AXP192_PWR_OUT_CTRL, AXP192_PWR_OUT_DCDC1_MASK),
+	AXP_DESC(AXP192, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
+		 AXP192_DCDC2_V_OUT, AXP192_DCDC2_V_OUT_MASK,
+		 AXP192_PWR_OUT_CTRL, AXP192_PWR_OUT_DCDC2_MASK),
+	AXP_DESC(AXP192, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
+		 AXP192_DCDC3_V_OUT, AXP192_DCDC3_V_OUT_MASK,
+		 AXP192_PWR_OUT_CTRL, AXP192_PWR_OUT_DCDC3_MASK),
+	AXP_DESC_FIXED(AXP192, LDO1, "ldo1", "acin", 1250),
+	AXP_DESC(AXP192, LDO2, "ldo2", "ldoin", 1800, 3300, 100,
+		 AXP192_LDO2_3_V_OUT, AXP192_LDO2_V_OUT_MASK,
+		 AXP192_PWR_OUT_CTRL, AXP192_PWR_OUT_LDO2_MASK),
+	AXP_DESC(AXP192, LDO3, "ldo3", "ldoin", 1800, 3300, 100,
+		 AXP192_LDO2_3_V_OUT, AXP192_LDO3_V_OUT_MASK,
+		 AXP192_PWR_OUT_CTRL, AXP192_PWR_OUT_LDO3_MASK),
+	AXP_DESC_IO(AXP192, LDO_IO0, "ldo_io0", "ips", 700, 3300, 100,
+		    AXP192_LDO_IO0_V_OUT, AXP192_LDO_IO0_V_OUT_MASK,
+		    AXP192_GPIO0_CTRL, AXP192_GPIO0_FUNC_MASK,
+		    AXP192_IO_ENABLED, AXP192_IO_DISABLED),
+};
+
 static const struct linear_range axp20x_ldo4_ranges[] = {
 	REGULATOR_LINEAR_RANGE(1250000,
 			       AXP20X_LDO4_V_OUT_1250mV_START,
@@ -1008,6 +1062,12 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 	u32 min, max, def, step;
 
 	switch (axp20x->variant) {
+	case AXP192_ID:
+		min = 900;
+		max = 2025;
+		def = 1500;
+		step = 75;
+		break;
 	case AXP202_ID:
 	case AXP209_ID:
 		min = 750;
@@ -1100,6 +1160,24 @@ static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work
 	unsigned int mask;
 
 	switch (axp20x->variant) {
+	case AXP192_ID:
+		switch (id) {
+		case AXP192_DCDC1:
+			mask = AXP192_WORKMODE_DCDC1_MASK;
+			break;
+		case AXP192_DCDC2:
+			mask = AXP192_WORKMODE_DCDC2_MASK;
+			break;
+		case AXP192_DCDC3:
+			mask = AXP192_WORKMODE_DCDC3_MASK;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		workmode <<= ffs(mask) - 1;
+		break;
+
 	case AXP202_ID:
 	case AXP209_ID:
 		if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
@@ -1220,6 +1298,10 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 	bool drivevbus = false;
 
 	switch (axp20x->variant) {
+	case AXP192_ID:
+		regulators = axp192_regulators;
+		nregulators = AXP192_REG_ID_MAX;
+		break;
 	case AXP202_ID:
 	case AXP209_ID:
 		regulators = axp20x_regulators;
-- 
2.35.1

[PATCH v5 07/13] iio: adc: axp20x_adc: Minor code cleanups

[Aidan MacDonald]

The code may be clearer if parameters are not re-purposed to hold
temporary results like register values, so introduce local variables
as necessary to avoid that. Regroup macros based on chip type, and
use the FIELD_PREP() macro instead of a hand-rolled version.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/iio/adc/axp20x_adc.c | 61 +++++++++++++++++++-----------------
 1 file changed, 32 insertions(+), 29 deletions(-)

diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index 53bf7d4899d2..ab25e6e1ff65 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -5,6 +5,7 @@
  *	Quentin Schulz <quentin.schulz@free-electrons.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/completion.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
@@ -22,20 +23,20 @@
 #include <linux/mfd/axp20x.h>
 
 #define AXP20X_ADC_EN1_MASK			GENMASK(7, 0)
-
 #define AXP20X_ADC_EN2_MASK			(GENMASK(3, 2) | BIT(7))
+
 #define AXP22X_ADC_EN1_MASK			(GENMASK(7, 5) | BIT(0))
 
 #define AXP20X_GPIO10_IN_RANGE_GPIO0		BIT(0)
 #define AXP20X_GPIO10_IN_RANGE_GPIO1		BIT(1)
-#define AXP20X_GPIO10_IN_RANGE_GPIO0_VAL(x)	((x) & BIT(0))
-#define AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(x)	(((x) & BIT(0)) << 1)
 
 #define AXP20X_ADC_RATE_MASK			GENMASK(7, 6)
-#define AXP813_V_I_ADC_RATE_MASK		GENMASK(5, 4)
-#define AXP813_ADC_RATE_MASK			(AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK)
 #define AXP20X_ADC_RATE_HZ(x)			((ilog2((x) / 25) << 6) & AXP20X_ADC_RATE_MASK)
+
 #define AXP22X_ADC_RATE_HZ(x)			((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK)
+
+#define AXP813_V_I_ADC_RATE_MASK		GENMASK(5, 4)
+#define AXP813_ADC_RATE_MASK			(AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK)
 #define AXP813_TS_GPIO0_ADC_RATE_HZ(x)		AXP20X_ADC_RATE_HZ(x)
 #define AXP813_V_I_ADC_RATE_HZ(x)		((ilog2((x) / 100) << 4) & AXP813_V_I_ADC_RATE_MASK)
 #define AXP813_ADC_RATE_HZ(x)			(AXP20X_ADC_RATE_HZ(x) | AXP813_V_I_ADC_RATE_HZ(x))
@@ -234,7 +235,7 @@ static int axp20x_adc_raw(struct iio_dev *indio_dev,
 			  struct iio_chan_spec const *chan, int *val)
 {
 	struct axp20x_adc_iio *info = iio_priv(indio_dev);
-	int size = 12;
+	int ret, size;
 
 	/*
 	 * N.B.:  Unlike the Chinese datasheets tell, the charging current is
@@ -246,10 +247,11 @@ static int axp20x_adc_raw(struct iio_dev *indio_dev,
 	else
 		size = 12;
 
-	*val = axp20x_read_variable_width(info->regmap, chan->address, size);
-	if (*val < 0)
-		return *val;
+	ret = axp20x_read_variable_width(info->regmap, chan->address, size);
+	if (ret < 0)
+		return ret;
 
+	*val = ret;
 	return IIO_VAL_INT;
 }
 
@@ -257,11 +259,13 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev,
 			  struct iio_chan_spec const *chan, int *val)
 {
 	struct axp20x_adc_iio *info = iio_priv(indio_dev);
+	int ret;
 
-	*val = axp20x_read_variable_width(info->regmap, chan->address, 12);
-	if (*val < 0)
-		return *val;
+	ret = axp20x_read_variable_width(info->regmap, chan->address, 12);
+	if (ret < 0)
+		return ret;
 
+	*val = ret;
 	return IIO_VAL_INT;
 }
 
@@ -269,11 +273,13 @@ static int axp813_adc_raw(struct iio_dev *indio_dev,
 			  struct iio_chan_spec const *chan, int *val)
 {
 	struct axp20x_adc_iio *info = iio_priv(indio_dev);
+	int ret;
 
-	*val = axp20x_read_variable_width(info->regmap, chan->address, 12);
-	if (*val < 0)
-		return *val;
+	ret = axp20x_read_variable_width(info->regmap, chan->address, 12);
+	if (ret < 0)
+		return ret;
 
+	*val = ret;
 	return IIO_VAL_INT;
 }
 
@@ -443,27 +449,27 @@ static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
 				     int *val)
 {
 	struct axp20x_adc_iio *info = iio_priv(indio_dev);
+	unsigned int regval;
 	int ret;
 
-	ret = regmap_read(info->regmap, AXP20X_GPIO10_IN_RANGE, val);
+	ret = regmap_read(info->regmap, AXP20X_GPIO10_IN_RANGE, &regval);
 	if (ret < 0)
 		return ret;
 
 	switch (channel) {
 	case AXP20X_GPIO0_V:
-		*val &= AXP20X_GPIO10_IN_RANGE_GPIO0;
+		regval = FIELD_GET(AXP20X_GPIO10_IN_RANGE_GPIO0, regval);
 		break;
 
 	case AXP20X_GPIO1_V:
-		*val &= AXP20X_GPIO10_IN_RANGE_GPIO1;
+		regval = FIELD_GET(AXP20X_GPIO10_IN_RANGE_GPIO1, regval);
 		break;
 
 	default:
 		return -EINVAL;
 	}
 
-	*val = *val ? 700000 : 0;
-
+	*val = regval ? 700000 : 0;
 	return IIO_VAL_INT;
 }
 
@@ -548,7 +554,7 @@ static int axp20x_write_raw(struct iio_dev *indio_dev,
 			    long mask)
 {
 	struct axp20x_adc_iio *info = iio_priv(indio_dev);
-	unsigned int reg, regval;
+	unsigned int regmask, regval;
 
 	/*
 	 * The AXP20X PMIC allows the user to choose between 0V and 0.7V offsets
@@ -560,25 +566,22 @@ static int axp20x_write_raw(struct iio_dev *indio_dev,
 	if (val != 0 && val != 700000)
 		return -EINVAL;
 
-	val = val ? 1 : 0;
-
 	switch (chan->channel) {
 	case AXP20X_GPIO0_V:
-		reg = AXP20X_GPIO10_IN_RANGE_GPIO0;
-		regval = AXP20X_GPIO10_IN_RANGE_GPIO0_VAL(val);
+		regmask = AXP20X_GPIO10_IN_RANGE_GPIO0;
+		regval = FIELD_PREP(AXP20X_GPIO10_IN_RANGE_GPIO0, !!val);
 		break;
 
 	case AXP20X_GPIO1_V:
-		reg = AXP20X_GPIO10_IN_RANGE_GPIO1;
-		regval = AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(val);
+		regmask = AXP20X_GPIO10_IN_RANGE_GPIO1;
+		regval = FIELD_PREP(AXP20X_GPIO10_IN_RANGE_GPIO1, !!val);
 		break;
 
 	default:
 		return -EINVAL;
 	}
 
-	return regmap_update_bits(info->regmap, AXP20X_GPIO10_IN_RANGE, reg,
-				  regval);
+	return regmap_update_bits(info->regmap, AXP20X_GPIO10_IN_RANGE, regmask, regval);
 }
 
 static const struct iio_info axp20x_adc_iio_info = {
-- 
2.35.1

[PATCH v5 08/13] iio: adc: axp20x_adc: Replace adc_en2 flag with adc_en2_mask field

[Aidan MacDonald]

The adc_en2 flag is essentially specific to axp20x-compatible devices
because it hardcodes register values. Replace it with a mask field
so the register value can be specified in device match data.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/iio/adc/axp20x_adc.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index ab25e6e1ff65..75bda94dbce1 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -623,9 +623,9 @@ struct axp_data {
 	int				num_channels;
 	struct iio_chan_spec const	*channels;
 	unsigned long			adc_en1_mask;
+	unsigned long			adc_en2_mask;
 	int				(*adc_rate)(struct axp20x_adc_iio *info,
 						    int rate);
-	bool				adc_en2;
 	struct iio_map			*maps;
 };
 
@@ -634,8 +634,8 @@ static const struct axp_data axp20x_data = {
 	.num_channels = ARRAY_SIZE(axp20x_adc_channels),
 	.channels = axp20x_adc_channels,
 	.adc_en1_mask = AXP20X_ADC_EN1_MASK,
+	.adc_en2_mask = AXP20X_ADC_EN2_MASK,
 	.adc_rate = axp20x_adc_rate,
-	.adc_en2 = true,
 	.maps = axp20x_maps,
 };
 
@@ -645,7 +645,6 @@ static const struct axp_data axp22x_data = {
 	.channels = axp22x_adc_channels,
 	.adc_en1_mask = AXP22X_ADC_EN1_MASK,
 	.adc_rate = axp22x_adc_rate,
-	.adc_en2 = false,
 	.maps = axp22x_maps,
 };
 
@@ -655,7 +654,6 @@ static const struct axp_data axp813_data = {
 	.channels = axp813_adc_channels,
 	.adc_en1_mask = AXP22X_ADC_EN1_MASK,
 	.adc_rate = axp813_adc_rate,
-	.adc_en2 = false,
 	.maps = axp22x_maps,
 };
 
@@ -713,10 +711,10 @@ static int axp20x_probe(struct platform_device *pdev)
 	/* Enable the ADCs on IP */
 	regmap_write(info->regmap, AXP20X_ADC_EN1, info->data->adc_en1_mask);
 
-	if (info->data->adc_en2)
-		/* Enable GPIO0/1 and internal temperature ADCs */
+	if (info->data->adc_en2_mask)
 		regmap_update_bits(info->regmap, AXP20X_ADC_EN2,
-				   AXP20X_ADC_EN2_MASK, AXP20X_ADC_EN2_MASK);
+				   info->data->adc_en2_mask,
+				   info->data->adc_en2_mask);
 
 	/* Configure ADCs rate */
 	info->data->adc_rate(info, 100);
@@ -741,7 +739,7 @@ static int axp20x_probe(struct platform_device *pdev)
 fail_map:
 	regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
 
-	if (info->data->adc_en2)
+	if (info->data->adc_en2_mask)
 		regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
 
 	return ret;
@@ -757,7 +755,7 @@ static int axp20x_remove(struct platform_device *pdev)
 
 	regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
 
-	if (info->data->adc_en2)
+	if (info->data->adc_en2_mask)
 		regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
 
 	return 0;
-- 
2.35.1

[PATCH v5 09/13] iio: adc: axp20x_adc: Add support for AXP192

[Aidan MacDonald]

The AXP192 is identical to the AXP20x, except for the addition of
two more GPIO ADC channels.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/iio/adc/axp20x_adc.c | 279 +++++++++++++++++++++++++++++++++++
 1 file changed, 279 insertions(+)

diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index 75bda94dbce1..8d748b814f20 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -22,11 +22,19 @@
 #include <linux/iio/machine.h>
 #include <linux/mfd/axp20x.h>
 
+#define AXP192_ADC_EN1_MASK			GENMASK(7, 0)
+#define AXP192_ADC_EN2_MASK			(GENMASK(3, 0) | BIT(7))
+
 #define AXP20X_ADC_EN1_MASK			GENMASK(7, 0)
 #define AXP20X_ADC_EN2_MASK			(GENMASK(3, 2) | BIT(7))
 
 #define AXP22X_ADC_EN1_MASK			(GENMASK(7, 5) | BIT(0))
 
+#define AXP192_GPIO30_IN_RANGE_GPIO0		BIT(0)
+#define AXP192_GPIO30_IN_RANGE_GPIO1		BIT(1)
+#define AXP192_GPIO30_IN_RANGE_GPIO2		BIT(2)
+#define AXP192_GPIO30_IN_RANGE_GPIO3		BIT(3)
+
 #define AXP20X_GPIO10_IN_RANGE_GPIO0		BIT(0)
 #define AXP20X_GPIO10_IN_RANGE_GPIO1		BIT(1)
 
@@ -71,6 +79,25 @@ struct axp20x_adc_iio {
 	const struct axp_data	*data;
 };
 
+enum axp192_adc_channel_v {
+	AXP192_ACIN_V = 0,
+	AXP192_VBUS_V,
+	AXP192_TS_IN,
+	AXP192_GPIO0_V,
+	AXP192_GPIO1_V,
+	AXP192_GPIO2_V,
+	AXP192_GPIO3_V,
+	AXP192_IPSOUT_V,
+	AXP192_BATT_V,
+};
+
+enum axp192_adc_channel_i {
+	AXP192_ACIN_I = 0,
+	AXP192_VBUS_I,
+	AXP192_BATT_CHRG_I,
+	AXP192_BATT_DISCHRG_I,
+};
+
 enum axp20x_adc_channel_v {
 	AXP20X_ACIN_V = 0,
 	AXP20X_VBUS_V,
@@ -158,6 +185,43 @@ static struct iio_map axp22x_maps[] = {
  * The only exception is for the battery. batt_v will be in_voltage6_raw and
  * charge current in_current6_raw and discharge current will be in_current7_raw.
  */
+static const struct iio_chan_spec axp192_adc_channels[] = {
+	AXP20X_ADC_CHANNEL(AXP192_ACIN_V, "acin_v", IIO_VOLTAGE,
+			   AXP20X_ACIN_V_ADC_H),
+	AXP20X_ADC_CHANNEL(AXP192_ACIN_I, "acin_i", IIO_CURRENT,
+			   AXP20X_ACIN_I_ADC_H),
+	AXP20X_ADC_CHANNEL(AXP192_VBUS_V, "vbus_v", IIO_VOLTAGE,
+			   AXP20X_VBUS_V_ADC_H),
+	AXP20X_ADC_CHANNEL(AXP192_VBUS_I, "vbus_i", IIO_CURRENT,
+			   AXP20X_VBUS_I_ADC_H),
+	{
+		.type = IIO_TEMP,
+		.address = AXP20X_TEMP_ADC_H,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OFFSET),
+		.datasheet_name = "pmic_temp",
+	},
+	AXP20X_ADC_CHANNEL_OFFSET(AXP192_GPIO0_V, "gpio0_v", IIO_VOLTAGE,
+				  AXP20X_GPIO0_V_ADC_H),
+	AXP20X_ADC_CHANNEL_OFFSET(AXP192_GPIO1_V, "gpio1_v", IIO_VOLTAGE,
+				  AXP20X_GPIO1_V_ADC_H),
+	AXP20X_ADC_CHANNEL_OFFSET(AXP192_GPIO2_V, "gpio2_v", IIO_VOLTAGE,
+				  AXP192_GPIO2_V_ADC_H),
+	AXP20X_ADC_CHANNEL_OFFSET(AXP192_GPIO3_V, "gpio3_v", IIO_VOLTAGE,
+				  AXP192_GPIO3_V_ADC_H),
+	AXP20X_ADC_CHANNEL(AXP192_IPSOUT_V, "ipsout_v", IIO_VOLTAGE,
+			   AXP20X_IPSOUT_V_HIGH_H),
+	AXP20X_ADC_CHANNEL(AXP192_BATT_V, "batt_v", IIO_VOLTAGE,
+			   AXP20X_BATT_V_H),
+	AXP20X_ADC_CHANNEL(AXP192_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT,
+			   AXP20X_BATT_CHRG_I_H),
+	AXP20X_ADC_CHANNEL(AXP192_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
+			   AXP20X_BATT_DISCHRG_I_H),
+	AXP20X_ADC_CHANNEL(AXP192_TS_IN, "ts_v", IIO_VOLTAGE,
+			   AXP20X_TS_IN_H),
+};
+
 static const struct iio_chan_spec axp20x_adc_channels[] = {
 	AXP20X_ADC_CHANNEL(AXP20X_ACIN_V, "acin_v", IIO_VOLTAGE,
 			   AXP20X_ACIN_V_ADC_H),
@@ -231,6 +295,27 @@ static const struct iio_chan_spec axp813_adc_channels[] = {
 			   AXP288_TS_ADC_H),
 };
 
+static int axp192_adc_raw(struct iio_dev *indio_dev,
+			  struct iio_chan_spec const *chan, int *val)
+{
+	struct axp20x_adc_iio *info = iio_priv(indio_dev);
+	int ret, size;
+
+	if (chan->type == IIO_CURRENT &&
+	    (chan->channel == AXP192_BATT_CHRG_I ||
+	     chan->channel == AXP192_BATT_DISCHRG_I))
+		size = 13;
+	else
+		size = 12;
+
+	ret = axp20x_read_variable_width(info->regmap, chan->address, size);
+	if (ret < 0)
+		return ret;
+
+	*val = ret;
+	return IIO_VAL_INT;
+}
+
 static int axp20x_adc_raw(struct iio_dev *indio_dev,
 			  struct iio_chan_spec const *chan, int *val)
 {
@@ -283,6 +368,44 @@ static int axp813_adc_raw(struct iio_dev *indio_dev,
 	return IIO_VAL_INT;
 }
 
+static int axp192_adc_scale_voltage(int channel, int *val, int *val2)
+{
+	switch (channel) {
+	case AXP192_ACIN_V:
+	case AXP192_VBUS_V:
+		*val = 1;
+		*val2 = 700000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	case AXP192_GPIO0_V:
+	case AXP192_GPIO1_V:
+	case AXP192_GPIO2_V:
+	case AXP192_GPIO3_V:
+		*val = 0;
+		*val2 = 500000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	case AXP192_BATT_V:
+		*val = 1;
+		*val2 = 100000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	case AXP192_IPSOUT_V:
+		*val = 1;
+		*val2 = 400000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	case AXP192_TS_IN:
+		/* 0.8 mV per LSB */
+		*val = 0;
+		*val2 = 800000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	default:
+		return -EINVAL;
+	}
+}
+
 static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
 {
 	switch (channel) {
@@ -386,6 +509,29 @@ static int axp20x_adc_scale_current(int channel, int *val, int *val2)
 	}
 }
 
+static int axp192_adc_scale(struct iio_chan_spec const *chan, int *val,
+			    int *val2)
+{
+	switch (chan->type) {
+	case IIO_VOLTAGE:
+		return axp192_adc_scale_voltage(chan->channel, val, val2);
+
+	case IIO_CURRENT:
+		/*
+		 * AXP192 current channels are identical to the AXP20x,
+		 * therefore we can re-use the scaling function.
+		 */
+		return axp20x_adc_scale_current(chan->channel, val, val2);
+
+	case IIO_TEMP:
+		*val = 100;
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
 static int axp20x_adc_scale(struct iio_chan_spec const *chan, int *val,
 			    int *val2)
 {
@@ -445,6 +591,42 @@ static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val,
 	}
 }
 
+static int axp192_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
+				     int *val)
+{
+	struct axp20x_adc_iio *info = iio_priv(indio_dev);
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(info->regmap, AXP192_GPIO30_IN_RANGE, &regval);
+	if (ret < 0)
+		return ret;
+
+	switch (channel) {
+	case AXP192_GPIO0_V:
+		regval = FIELD_GET(AXP192_GPIO30_IN_RANGE_GPIO0, regval);
+		break;
+
+	case AXP192_GPIO1_V:
+		regval = FIELD_GET(AXP192_GPIO30_IN_RANGE_GPIO1, regval);
+		break;
+
+	case AXP192_GPIO2_V:
+		regval = FIELD_GET(AXP192_GPIO30_IN_RANGE_GPIO2, regval);
+		break;
+
+	case AXP192_GPIO3_V:
+		regval = FIELD_GET(AXP192_GPIO30_IN_RANGE_GPIO3, regval);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	*val = regval ? 700000 : 0;
+	return IIO_VAL_INT;
+}
+
 static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
 				     int *val)
 {
@@ -473,6 +655,22 @@ static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
 	return IIO_VAL_INT;
 }
 
+static int axp192_adc_offset(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int *val)
+{
+	switch (chan->type) {
+	case IIO_VOLTAGE:
+		return axp192_adc_offset_voltage(indio_dev, chan->channel, val);
+
+	case IIO_TEMP:
+		*val = -1447;
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
 static int axp20x_adc_offset(struct iio_dev *indio_dev,
 			     struct iio_chan_spec const *chan, int *val)
 {
@@ -489,6 +687,25 @@ static int axp20x_adc_offset(struct iio_dev *indio_dev,
 	}
 }
 
+static int axp192_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan, int *val,
+			   int *val2, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_OFFSET:
+		return axp192_adc_offset(indio_dev, chan, val);
+
+	case IIO_CHAN_INFO_SCALE:
+		return axp192_adc_scale(chan, val, val2);
+
+	case IIO_CHAN_INFO_RAW:
+		return axp192_adc_raw(indio_dev, chan, val);
+
+	default:
+		return -EINVAL;
+	}
+}
+
 static int axp20x_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan, int *val,
 			   int *val2, long mask)
@@ -549,6 +766,51 @@ static int axp813_read_raw(struct iio_dev *indio_dev,
 	}
 }
 
+static int axp192_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, int val, int val2,
+			    long mask)
+{
+	struct axp20x_adc_iio *info = iio_priv(indio_dev);
+	unsigned int regmask, regval;
+
+	/*
+	 * The AXP192 PMIC allows the user to choose between 0V and 0.7V offsets
+	 * for (independently) GPIO0-3 when in ADC mode.
+	 */
+	if (mask != IIO_CHAN_INFO_OFFSET)
+		return -EINVAL;
+
+	if (val != 0 && val != 700000)
+		return -EINVAL;
+
+	switch (chan->channel) {
+	case AXP192_GPIO0_V:
+		regmask = AXP192_GPIO30_IN_RANGE_GPIO0;
+		regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO0, !!val);
+		break;
+
+	case AXP192_GPIO1_V:
+		regmask = AXP192_GPIO30_IN_RANGE_GPIO1;
+		regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO1, !!val);
+		break;
+
+	case AXP192_GPIO2_V:
+		regmask = AXP192_GPIO30_IN_RANGE_GPIO2;
+		regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO2, !!val);
+		break;
+
+	case AXP192_GPIO3_V:
+		regmask = AXP192_GPIO30_IN_RANGE_GPIO3;
+		regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO3, !!val);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return regmap_update_bits(info->regmap, AXP192_GPIO30_IN_RANGE, regmask, regval);
+}
+
 static int axp20x_write_raw(struct iio_dev *indio_dev,
 			    struct iio_chan_spec const *chan, int val, int val2,
 			    long mask)
@@ -584,6 +846,11 @@ static int axp20x_write_raw(struct iio_dev *indio_dev,
 	return regmap_update_bits(info->regmap, AXP20X_GPIO10_IN_RANGE, regmask, regval);
 }
 
+static const struct iio_info axp192_adc_iio_info = {
+	.read_raw = axp192_read_raw,
+	.write_raw = axp192_write_raw,
+};
+
 static const struct iio_info axp20x_adc_iio_info = {
 	.read_raw = axp20x_read_raw,
 	.write_raw = axp20x_write_raw,
@@ -629,6 +896,16 @@ struct axp_data {
 	struct iio_map			*maps;
 };
 
+static const struct axp_data axp192_data = {
+	.iio_info = &axp192_adc_iio_info,
+	.num_channels = ARRAY_SIZE(axp192_adc_channels),
+	.channels = axp192_adc_channels,
+	.adc_en1_mask = AXP192_ADC_EN1_MASK,
+	.adc_en2_mask = AXP192_ADC_EN2_MASK,
+	.adc_rate = axp20x_adc_rate,
+	.maps = axp20x_maps,
+};
+
 static const struct axp_data axp20x_data = {
 	.iio_info = &axp20x_adc_iio_info,
 	.num_channels = ARRAY_SIZE(axp20x_adc_channels),
@@ -658,6 +935,7 @@ static const struct axp_data axp813_data = {
 };
 
 static const struct of_device_id axp20x_adc_of_match[] = {
+	{ .compatible = "x-powers,axp192-adc", .data = (void *)&axp192_data, },
 	{ .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
 	{ .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
 	{ .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
@@ -666,6 +944,7 @@ static const struct of_device_id axp20x_adc_of_match[] = {
 MODULE_DEVICE_TABLE(of, axp20x_adc_of_match);
 
 static const struct platform_device_id axp20x_adc_id_match[] = {
+	{ .name = "axp192-adc", .driver_data = (kernel_ulong_t)&axp192_data, },
 	{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
 	{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
 	{ .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, },
-- 
2.35.1

[PATCH v5 10/13] power: supply: axp20x_usb_power: Add support for AXP192

[Aidan MacDonald]

The AXP192's USB power supply is similar to the AXP202 but it has
different USB current limits and a different offset for the VBUS
status register.

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/power/supply/axp20x_usb_power.c | 84 +++++++++++++++++++++----
 1 file changed, 73 insertions(+), 11 deletions(-)

diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c
index a1e6d1d44808..f83e2ed6d507 100644
--- a/drivers/power/supply/axp20x_usb_power.c
+++ b/drivers/power/supply/axp20x_usb_power.c
@@ -48,6 +48,9 @@
 #define AXP813_VBUS_CLIMIT_2000mA	2
 #define AXP813_VBUS_CLIMIT_2500mA	3
 
+#define AXP192_VBUS_CLIMIT_EN		BIT(1)
+#define AXP192_VBUS_CLIMIT_100mA	BIT(0)
+
 #define AXP20X_ADC_EN1_VBUS_CURR	BIT(2)
 #define AXP20X_ADC_EN1_VBUS_VOLT	BIT(3)
 
@@ -121,6 +124,25 @@ static void axp20x_usb_power_poll_vbus(struct work_struct *work)
 		mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
 }
 
+static int axp192_get_current_max(struct axp20x_usb_power *power, int *val)
+{
+	unsigned int v;
+	int ret;
+
+	ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
+	if (ret)
+		return ret;
+
+	if (!(v & AXP192_VBUS_CLIMIT_EN))
+		*val = -1;
+	else if (v & AXP192_VBUS_CLIMIT_100mA)
+		*val = 100000;
+	else
+		*val = 500000;
+
+	return 0;
+}
+
 static int axp20x_get_current_max(struct axp20x_usb_power *power, int *val)
 {
 	unsigned int v;
@@ -179,7 +201,7 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 	enum power_supply_property psp, union power_supply_propval *val)
 {
 	struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
-	unsigned int input, v;
+	unsigned int input, v, reg;
 	int ret;
 
 	switch (psp) {
@@ -215,6 +237,8 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CURRENT_MAX:
 		if (power->axp20x_id == AXP813_ID)
 			return axp813_get_current_max(power, &val->intval);
+		else if (power->axp20x_id == AXP192_ID)
+			return axp192_get_current_max(power, &val->intval);
 		return axp20x_get_current_max(power, &val->intval);
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
 		if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
@@ -256,16 +280,19 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 
 		val->intval = POWER_SUPPLY_HEALTH_GOOD;
 
-		if (power->axp20x_id == AXP202_ID) {
-			ret = regmap_read(power->regmap,
-					  AXP20X_USB_OTG_STATUS, &v);
-			if (ret)
-				return ret;
+		if (power->axp20x_id == AXP192_ID)
+			reg = AXP192_USB_OTG_STATUS;
+		else if (power->axp20x_id == AXP202_ID)
+			reg = AXP20X_USB_OTG_STATUS;
+		else
+			break; /* Other chips lack the OTG status register */
 
-			if (!(v & AXP20X_USB_STATUS_VBUS_VALID))
-				val->intval =
-					POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
-		}
+		ret = regmap_read(power->regmap, reg, &v);
+		if (ret)
+			return ret;
+
+		if (!(v & AXP20X_USB_STATUS_VBUS_VALID))
+			val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
 		break;
 	case POWER_SUPPLY_PROP_PRESENT:
 		val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_PRESENT);
@@ -316,6 +343,28 @@ static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power,
 	return -EINVAL;
 }
 
+static int axp192_usb_power_set_current_max(struct axp20x_usb_power *power,
+					    int intval)
+{
+	const unsigned int mask = AXP192_VBUS_CLIMIT_EN |
+				  AXP192_VBUS_CLIMIT_100mA;
+	unsigned int val;
+
+	switch (intval) {
+	case 100000:
+		val = AXP192_VBUS_CLIMIT_EN | AXP192_VBUS_CLIMIT_100mA;
+		break;
+	case 500000:
+		val = AXP192_VBUS_CLIMIT_EN;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return regmap_update_bits(power->regmap,
+				  AXP20X_VBUS_IPSOUT_MGMT, mask, val);
+}
+
 static int axp813_usb_power_set_current_max(struct axp20x_usb_power *power,
 					    int intval)
 {
@@ -383,6 +432,9 @@ static int axp20x_usb_power_set_property(struct power_supply *psy,
 		if (power->axp20x_id == AXP813_ID)
 			return axp813_usb_power_set_current_max(power,
 								val->intval);
+		else if (power->axp20x_id == AXP192_ID)
+			return axp192_usb_power_set_current_max(power,
+								val->intval);
 		return axp20x_usb_power_set_current_max(power, val->intval);
 
 	default:
@@ -468,6 +520,13 @@ struct axp_data {
 	enum axp20x_variants		axp20x_id;
 };
 
+static const struct axp_data axp192_data = {
+	.power_desc	= &axp20x_usb_power_desc,
+	.irq_names	= axp20x_irq_names,
+	.num_irq_names	= ARRAY_SIZE(axp20x_irq_names),
+	.axp20x_id	= AXP192_ID,
+};
+
 static const struct axp_data axp202_data = {
 	.power_desc	= &axp20x_usb_power_desc,
 	.irq_names	= axp20x_irq_names,
@@ -600,7 +659,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (power->axp20x_id == AXP202_ID) {
+	if (power->axp20x_id == AXP192_ID || power->axp20x_id == AXP202_ID) {
 		/* Enable vbus valid checking */
 		ret = regmap_update_bits(power->regmap, AXP20X_VBUS_MON,
 					 AXP20X_VBUS_MON_VBUS_VALID,
@@ -659,6 +718,9 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 
 static const struct of_device_id axp20x_usb_power_match[] = {
 	{
+		.compatible = "x-powers,axp192-usb-power-supply",
+		.data = &axp192_data,
+	}, {
 		.compatible = "x-powers,axp202-usb-power-supply",
 		.data = &axp202_data,
 	}, {
-- 
2.35.1

[PATCH v5 11/13] power: axp20x_battery: Add constant charge current table

[Aidan MacDonald]

Add a table-based lookup method for constant charge current,
which is necessary when the setting cannot be represented as
a linear range.

This also replaces the hard-coded 300 mA default ccc setting
if the DT-specified value is unsupported; the minimum value
for the device is now set exactly instead of relying on the
value being rounded down to a supported value.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/power/supply/axp20x_battery.c | 59 +++++++++++++++++++++------
 1 file changed, 47 insertions(+), 12 deletions(-)

diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
index 9106077c0dbb..401779d84d2b 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -61,6 +61,14 @@ struct axp20x_batt_ps;
 struct axp_data {
 	int	ccc_scale;
 	int	ccc_offset;
+	/*
+	 * Lookup table for constant charge current, if provided this is used
+	 * instead of ccc_scale/ccc_offset.
+	 *
+	 * The table is indexed by the field AXP20X_CHRG_CTRL1_TGT_CURR so it
+	 * must have AXP20X_CHRG_CTRL1_TGT_CURR+1 elements.
+	 */
+	const int *ccc_table;
 	bool	has_fg_valid;
 	int	(*get_max_voltage)(struct axp20x_batt_ps *batt, int *val);
 	int	(*set_max_voltage)(struct axp20x_batt_ps *batt, int val);
@@ -176,7 +184,10 @@ static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
 
 	*val &= AXP20X_CHRG_CTRL1_TGT_CURR;
 
-	*val = *val * axp->data->ccc_scale + axp->data->ccc_offset;
+	if (axp->data->ccc_table)
+		*val = axp->data->ccc_table[*val];
+	else
+		*val = *val * axp->data->ccc_scale + axp->data->ccc_offset;
 
 	return 0;
 }
@@ -389,16 +400,35 @@ static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
 				  AXP20X_CHRG_CTRL1_TGT_VOLT, val);
 }
 
+static int axp20x_get_constant_charge_current_sel(struct axp20x_batt_ps *axp_batt,
+						  int charge_current)
+{
+	int i;
+
+	if (axp_batt->data->ccc_table) {
+		for (i = AXP20X_CHRG_CTRL1_TGT_CURR; i >= 0; i--) {
+			if (axp_batt->data->ccc_table[i] <= charge_current)
+				return i;
+		}
+
+		return -EINVAL;
+	}
+
+	i = (charge_current - axp_batt->data->ccc_offset) / axp_batt->data->ccc_scale;
+	if (i > AXP20X_CHRG_CTRL1_TGT_CURR || i < 0)
+		return -EINVAL;
+
+	return i;
+}
+
 static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt,
 					      int charge_current)
 {
 	if (charge_current > axp_batt->max_ccc)
 		return -EINVAL;
 
-	charge_current = (charge_current - axp_batt->data->ccc_offset) /
-		axp_batt->data->ccc_scale;
-
-	if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
+	charge_current = axp20x_get_constant_charge_current_sel(axp_batt, charge_current);
+	if (charge_current < 0)
 		return -EINVAL;
 
 	return regmap_update_bits(axp_batt->regmap, AXP20X_CHRG_CTRL1,
@@ -410,14 +440,14 @@ static int axp20x_set_max_constant_charge_current(struct axp20x_batt_ps *axp,
 {
 	bool lower_max = false;
 
-	charge_current = (charge_current - axp->data->ccc_offset) /
-		axp->data->ccc_scale;
-
-	if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
+	charge_current = axp20x_get_constant_charge_current_sel(axp, charge_current);
+	if (charge_current < 0)
 		return -EINVAL;
 
-	charge_current = charge_current * axp->data->ccc_scale +
-		axp->data->ccc_offset;
+	if (axp->data->ccc_table)
+		charge_current = axp->data->ccc_table[charge_current];
+	else
+		charge_current = charge_current * axp->data->ccc_scale + axp->data->ccc_offset;
 
 	if (charge_current > axp->max_ccc)
 		dev_warn(axp->dev,
@@ -629,7 +659,12 @@ static int axp20x_power_probe(struct platform_device *pdev)
 								   ccc)) {
 			dev_err(&pdev->dev,
 				"couldn't set constant charge current from DT: fallback to minimum value\n");
-			ccc = 300000;
+
+			if (axp20x_batt->data->ccc_table)
+				ccc = axp20x_batt->data->ccc_table[0];
+			else
+				ccc = axp20x_batt->data->ccc_offset;
+
 			axp20x_batt->max_ccc = ccc;
 			axp20x_set_constant_charge_current(axp20x_batt, ccc);
 		}
-- 
2.35.1

Re: [PATCH v5 11/13] power: axp20x_battery: Add constant charge current table

[Sebastian Reichel]

[-- Attachment #1: Type: text/plain, Size: 4627 bytes --]

Hi,

On Wed, Jul 06, 2022 at 11:19:00AM +0100, Aidan MacDonald wrote:
> Add a table-based lookup method for constant charge current,
> which is necessary when the setting cannot be represented as
> a linear range.
> 
> This also replaces the hard-coded 300 mA default ccc setting
> if the DT-specified value is unsupported; the minimum value
> for the device is now set exactly instead of relying on the
> value being rounded down to a supported value.
> 
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
> ---

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>

-- Sebastian

>  drivers/power/supply/axp20x_battery.c | 59 +++++++++++++++++++++------
>  1 file changed, 47 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
> index 9106077c0dbb..401779d84d2b 100644
> --- a/drivers/power/supply/axp20x_battery.c
> +++ b/drivers/power/supply/axp20x_battery.c
> @@ -61,6 +61,14 @@ struct axp20x_batt_ps;
>  struct axp_data {
>  	int	ccc_scale;
>  	int	ccc_offset;
> +	/*
> +	 * Lookup table for constant charge current, if provided this is used
> +	 * instead of ccc_scale/ccc_offset.
> +	 *
> +	 * The table is indexed by the field AXP20X_CHRG_CTRL1_TGT_CURR so it
> +	 * must have AXP20X_CHRG_CTRL1_TGT_CURR+1 elements.
> +	 */
> +	const int *ccc_table;
>  	bool	has_fg_valid;
>  	int	(*get_max_voltage)(struct axp20x_batt_ps *batt, int *val);
>  	int	(*set_max_voltage)(struct axp20x_batt_ps *batt, int val);
> @@ -176,7 +184,10 @@ static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
>  
>  	*val &= AXP20X_CHRG_CTRL1_TGT_CURR;
>  
> -	*val = *val * axp->data->ccc_scale + axp->data->ccc_offset;
> +	if (axp->data->ccc_table)
> +		*val = axp->data->ccc_table[*val];
> +	else
> +		*val = *val * axp->data->ccc_scale + axp->data->ccc_offset;
>  
>  	return 0;
>  }
> @@ -389,16 +400,35 @@ static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
>  				  AXP20X_CHRG_CTRL1_TGT_VOLT, val);
>  }
>  
> +static int axp20x_get_constant_charge_current_sel(struct axp20x_batt_ps *axp_batt,
> +						  int charge_current)
> +{
> +	int i;
> +
> +	if (axp_batt->data->ccc_table) {
> +		for (i = AXP20X_CHRG_CTRL1_TGT_CURR; i >= 0; i--) {
> +			if (axp_batt->data->ccc_table[i] <= charge_current)
> +				return i;
> +		}
> +
> +		return -EINVAL;
> +	}
> +
> +	i = (charge_current - axp_batt->data->ccc_offset) / axp_batt->data->ccc_scale;
> +	if (i > AXP20X_CHRG_CTRL1_TGT_CURR || i < 0)
> +		return -EINVAL;
> +
> +	return i;
> +}
> +
>  static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt,
>  					      int charge_current)
>  {
>  	if (charge_current > axp_batt->max_ccc)
>  		return -EINVAL;
>  
> -	charge_current = (charge_current - axp_batt->data->ccc_offset) /
> -		axp_batt->data->ccc_scale;
> -
> -	if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
> +	charge_current = axp20x_get_constant_charge_current_sel(axp_batt, charge_current);
> +	if (charge_current < 0)
>  		return -EINVAL;
>  
>  	return regmap_update_bits(axp_batt->regmap, AXP20X_CHRG_CTRL1,
> @@ -410,14 +440,14 @@ static int axp20x_set_max_constant_charge_current(struct axp20x_batt_ps *axp,
>  {
>  	bool lower_max = false;
>  
> -	charge_current = (charge_current - axp->data->ccc_offset) /
> -		axp->data->ccc_scale;
> -
> -	if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
> +	charge_current = axp20x_get_constant_charge_current_sel(axp, charge_current);
> +	if (charge_current < 0)
>  		return -EINVAL;
>  
> -	charge_current = charge_current * axp->data->ccc_scale +
> -		axp->data->ccc_offset;
> +	if (axp->data->ccc_table)
> +		charge_current = axp->data->ccc_table[charge_current];
> +	else
> +		charge_current = charge_current * axp->data->ccc_scale + axp->data->ccc_offset;
>  
>  	if (charge_current > axp->max_ccc)
>  		dev_warn(axp->dev,
> @@ -629,7 +659,12 @@ static int axp20x_power_probe(struct platform_device *pdev)
>  								   ccc)) {
>  			dev_err(&pdev->dev,
>  				"couldn't set constant charge current from DT: fallback to minimum value\n");
> -			ccc = 300000;
> +
> +			if (axp20x_batt->data->ccc_table)
> +				ccc = axp20x_batt->data->ccc_table[0];
> +			else
> +				ccc = axp20x_batt->data->ccc_offset;
> +
>  			axp20x_batt->max_ccc = ccc;
>  			axp20x_set_constant_charge_current(axp20x_batt, ccc);
>  		}
> -- 
> 2.35.1
> 

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

[PATCH v5 12/13] power: axp20x_battery: Support battery status without fuel gauge

[Aidan MacDonald]

Add a "has_fg" flag to indicate that the chip has a fuel gauge.
Report battery full status on chips with no fuel gauge using the
battery voltage.

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/power/supply/axp20x_battery.c | 34 ++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
index 401779d84d2b..574c1d001556 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -69,6 +69,7 @@ struct axp_data {
 	 * must have AXP20X_CHRG_CTRL1_TGT_CURR+1 elements.
 	 */
 	const int *ccc_table;
+	bool	has_fg;
 	bool	has_fg_valid;
 	int	(*get_max_voltage)(struct axp20x_batt_ps *batt, int *val);
 	int	(*set_max_voltage)(struct axp20x_batt_ps *batt, int val);
@@ -197,7 +198,7 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
 				   union power_supply_propval *val)
 {
 	struct axp20x_batt_ps *axp20x_batt = power_supply_get_drvdata(psy);
-	int ret = 0, reg, val1;
+	int ret = 0, reg, val1, val2;
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_PRESENT:
@@ -231,6 +232,34 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
 			return 0;
 		}
 
+		/*
+		 * If the chip does not have a fuel gauge, we check battery full status
+		 * using voltage instead.
+		 */
+		if (!axp20x_batt->data->has_fg) {
+			ret = axp20x_batt->data->get_max_voltage(axp20x_batt, &val1);
+			if (ret)
+				return ret;
+
+			ret = iio_read_channel_processed(axp20x_batt->batt_v, &val2);
+			if (ret)
+				return ret;
+
+			/* IIO subsystem reports voltage in mV but we need uV */
+			val2 *= 1000;
+
+			/*
+			 * According to the AXP192 datasheet, charging will restart if
+			 * the battery voltage drops below V_rch = V_tgt - 0.1 V, so we
+			 * report the battery is full if its voltage is at least V_rch.
+			 */
+			if (val2 >= val1 - 100000)
+				val->intval = POWER_SUPPLY_STATUS_FULL;
+			else
+				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+			break;
+		}
+
 		ret = regmap_read(axp20x_batt->regmap, AXP20X_FG_RES, &val1);
 		if (ret)
 			return ret;
@@ -552,6 +581,7 @@ static const struct power_supply_desc axp20x_batt_ps_desc = {
 static const struct axp_data axp209_data = {
 	.ccc_scale = 100000,
 	.ccc_offset = 300000,
+	.has_fg = true,
 	.get_max_voltage = axp20x_battery_get_max_voltage,
 	.set_max_voltage = axp20x_battery_set_max_voltage,
 };
@@ -559,6 +589,7 @@ static const struct axp_data axp209_data = {
 static const struct axp_data axp221_data = {
 	.ccc_scale = 150000,
 	.ccc_offset = 300000,
+	.has_fg = true,
 	.has_fg_valid = true,
 	.get_max_voltage = axp22x_battery_get_max_voltage,
 	.set_max_voltage = axp22x_battery_set_max_voltage,
@@ -567,6 +598,7 @@ static const struct axp_data axp221_data = {
 static const struct axp_data axp813_data = {
 	.ccc_scale = 200000,
 	.ccc_offset = 200000,
+	.has_fg = true,
 	.has_fg_valid = true,
 	.get_max_voltage = axp813_battery_get_max_voltage,
 	.set_max_voltage = axp20x_battery_set_max_voltage,
-- 
2.35.1

[PATCH v5 13/13] power: axp20x_battery: Add support for AXP192

[Aidan MacDonald]

The AXP192 has a battery charger similar to other X-Powers PMICs,
but unlike the other supported devices, it does not have a fuel
gauge and can't report battery capacity directly.

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/power/supply/axp20x_battery.c | 49 +++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
index 574c1d001556..1e84d26ce8e3 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -544,6 +544,19 @@ static int axp20x_battery_set_prop(struct power_supply *psy,
 	}
 }
 
+static enum power_supply_property axp192_battery_props[] = {
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+};
+
 static enum power_supply_property axp20x_battery_props[] = {
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
@@ -568,6 +581,16 @@ static int axp20x_battery_prop_writeable(struct power_supply *psy,
 	       psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX;
 }
 
+static const struct power_supply_desc axp192_batt_ps_desc = {
+	.name = "axp192-battery",
+	.type = POWER_SUPPLY_TYPE_BATTERY,
+	.properties = axp192_battery_props,
+	.num_properties = ARRAY_SIZE(axp192_battery_props),
+	.property_is_writeable = axp20x_battery_prop_writeable,
+	.get_property = axp20x_battery_get_prop,
+	.set_property = axp20x_battery_set_prop,
+};
+
 static const struct power_supply_desc axp20x_batt_ps_desc = {
 	.name = "axp20x-battery",
 	.type = POWER_SUPPLY_TYPE_BATTERY,
@@ -578,6 +601,19 @@ static const struct power_supply_desc axp20x_batt_ps_desc = {
 	.set_property = axp20x_battery_set_prop,
 };
 
+static const int axp192_ccc_table[AXP20X_CHRG_CTRL1_TGT_CURR+1] = {
+	100000,  190000,  280000,  360000,
+	450000,  550000,  630000,  700000,
+	780000,  880000,  960000,  1000000,
+	1080000, 1160000, 1240000, 1320000,
+};
+
+static const struct axp_data axp192_data = {
+	.ccc_table = axp192_ccc_table,
+	.get_max_voltage = axp20x_battery_get_max_voltage,
+	.set_max_voltage = axp20x_battery_set_max_voltage,
+};
+
 static const struct axp_data axp209_data = {
 	.ccc_scale = 100000,
 	.ccc_offset = 300000,
@@ -606,6 +642,9 @@ static const struct axp_data axp813_data = {
 
 static const struct of_device_id axp20x_battery_ps_id[] = {
 	{
+		.compatible = "x-powers,axp192-battery-power-supply",
+		.data = (void *)&axp192_data,
+	}, {
 		.compatible = "x-powers,axp209-battery-power-supply",
 		.data = (void *)&axp209_data,
 	}, {
@@ -623,6 +662,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
 	struct axp20x_batt_ps *axp20x_batt;
 	struct power_supply_config psy_cfg = {};
 	struct power_supply_battery_info *info;
+	const struct power_supply_desc *ps_desc;
 	struct device *dev = &pdev->dev;
 
 	if (!of_device_is_available(pdev->dev.of_node))
@@ -666,9 +706,12 @@ static int axp20x_power_probe(struct platform_device *pdev)
 
 	axp20x_batt->data = (struct axp_data *)of_device_get_match_data(dev);
 
-	axp20x_batt->batt = devm_power_supply_register(&pdev->dev,
-						       &axp20x_batt_ps_desc,
-						       &psy_cfg);
+	if (!axp20x_batt->data->has_fg)
+		ps_desc = &axp192_batt_ps_desc;
+	else
+		ps_desc = &axp20x_batt_ps_desc;
+
+	axp20x_batt->batt = devm_power_supply_register(&pdev->dev, ps_desc, &psy_cfg);
 	if (IS_ERR(axp20x_batt->batt)) {
 		dev_err(&pdev->dev, "failed to register power supply: %ld\n",
 			PTR_ERR(axp20x_batt->batt));
-- 
2.35.1