* [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling
@ 2020-12-22 7:31 Timon Baetz
2020-12-22 7:31 ` [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes Timon Baetz
` (5 more replies)
0 siblings, 6 replies; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:31 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
This allows the MAX8997 charger to set the current limit depending on
the detected extcon charger type.
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
drivers/extcon/extcon-max8997.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 337b0eea4e62..e1408075ef7d 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -44,6 +44,8 @@ static struct max8997_muic_irq muic_irqs[] = {
{ MAX8997_MUICIRQ_ChgDetRun, "muic-CHGDETRUN" },
{ MAX8997_MUICIRQ_ChgTyp, "muic-CHGTYP" },
{ MAX8997_MUICIRQ_OVP, "muic-OVP" },
+ { MAX8997_PMICIRQ_CHGINS, "pmic-CHGINS" },
+ { MAX8997_PMICIRQ_CHGRM, "pmic-CHGRM" },
};
/* Define supported cable type */
@@ -538,6 +540,8 @@ static void max8997_muic_irq_work(struct work_struct *work)
case MAX8997_MUICIRQ_DCDTmr:
case MAX8997_MUICIRQ_ChgDetRun:
case MAX8997_MUICIRQ_ChgTyp:
+ case MAX8997_PMICIRQ_CHGINS:
+ case MAX8997_PMICIRQ_CHGRM:
/* Handle charger cable */
ret = max8997_muic_chg_handler(info);
break;
--
2.25.1
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^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
@ 2020-12-22 7:31 ` Timon Baetz
2020-12-22 8:37 ` Krzysztof Kozlowski
2020-12-22 7:31 ` [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell Timon Baetz
` (4 subsequent siblings)
5 siblings, 1 reply; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:31 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
Add maxim,max8997-battery and maxim,max8997-muic optional nodes.
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
.../bindings/regulator/max8997-regulator.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/max8997-regulator.txt b/Documentation/devicetree/bindings/regulator/max8997-regulator.txt
index 6fe825b8ac1b..f969fc09fe29 100644
--- a/Documentation/devicetree/bindings/regulator/max8997-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/max8997-regulator.txt
@@ -53,6 +53,17 @@ Additional properties required if either of the optional properties are used:
- max8997,pmic-buck125-dvs-gpios: GPIO specifiers for three host gpio's used
for dvs. The format of the gpio specifier depends in the gpio controller.
+Optional nodes:
+- charger: Node for configuring the charger driver.
+ Required properties:
+ - compatible: "maxim,max8997-battery"
+ - extcon: extcon specifier for charging events
+ - charger-supply: regulator node for charging current
+
+- muic: Node used only by extcon consumers.
+ Required properties:
+ - compatible: "maxim,max8997-muic"
+
Regulators: The regulators of max8997 that have to be instantiated should be
included in a sub-node named 'regulators'. Regulator nodes included in this
sub-node should be of the format as listed below.
--
2.25.1
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
2020-12-22 7:31 ` [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes Timon Baetz
@ 2020-12-22 7:31 ` Timon Baetz
2020-12-22 8:37 ` Krzysztof Kozlowski
2020-12-22 9:55 ` Lee Jones
2020-12-22 7:31 ` [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit Timon Baetz
` (3 subsequent siblings)
5 siblings, 2 replies; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:31 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
Add of_compatible ("maxim,max8997-muic") to the mfd_cell to have a
of_node set in the extcon driver.
Add of_compatible ("maxim,max8997-battery") to the mfd_cell to configure
the charger driver.
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
drivers/mfd/max8997.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index 68d8f2b95287..55d3a6f97783 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -29,9 +29,9 @@
static const struct mfd_cell max8997_devs[] = {
{ .name = "max8997-pmic", },
{ .name = "max8997-rtc", },
- { .name = "max8997-battery", },
+ { .name = "max8997-battery", .of_compatible = "maxim,max8997-battery", },
{ .name = "max8997-haptic", },
- { .name = "max8997-muic", },
+ { .name = "max8997-muic", .of_compatible = "maxim,max8997-muic", },
{ .name = "max8997-led", .id = 1 },
{ .name = "max8997-led", .id = 2 },
};
--
2.25.1
_______________________________________________
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^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
2020-12-22 7:31 ` [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes Timon Baetz
2020-12-22 7:31 ` [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell Timon Baetz
@ 2020-12-22 7:31 ` Timon Baetz
2020-12-22 8:40 ` Krzysztof Kozlowski
2020-12-22 7:31 ` [PATCH v3 5/7] ARM: dts: exynos: Added muic and charger nodes for i9100 Timon Baetz
` (2 subsequent siblings)
5 siblings, 1 reply; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:31 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
Register for extcon notification and set charging current depending on
the detected cable type. Current values are taken from vendor kernel,
where most charger types end up setting 650mA [0].
Also enable and disable the CHARGER regulator based on extcon events.
[0] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-s2-epic-4g-touch-sph-d710-exynos4210-dump/drivers/misc/max8997-muic.c#L1675-L1678
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
drivers/power/supply/max8997_charger.c | 94 ++++++++++++++++++++++++++
1 file changed, 94 insertions(+)
diff --git a/drivers/power/supply/max8997_charger.c b/drivers/power/supply/max8997_charger.c
index 1947af25879a..673ffff14ae0 100644
--- a/drivers/power/supply/max8997_charger.c
+++ b/drivers/power/supply/max8997_charger.c
@@ -6,12 +6,14 @@
// MyungJoo Ham <myungjoo.ham@samsung.com>
#include <linux/err.h>
+#include <linux/extcon.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regulator/consumer.h>
/* MAX8997_REG_STATUS4 */
#define DCINOK_SHIFT 1
@@ -31,6 +33,10 @@ struct charger_data {
struct device *dev;
struct max8997_dev *iodev;
struct power_supply *battery;
+ struct regulator *reg;
+ struct extcon_dev *edev;
+ struct notifier_block extcon_nb;
+ struct work_struct extcon_work;
};
static enum power_supply_property max8997_battery_props[] = {
@@ -88,6 +94,67 @@ static int max8997_battery_get_property(struct power_supply *psy,
return 0;
}
+static void max8997_battery_extcon_evt_stop_work(void *data)
+{
+ struct charger_data *charger = data;
+
+ cancel_work_sync(&charger->extcon_work);
+}
+
+static void max8997_battery_extcon_evt_worker(struct work_struct *work)
+{
+ struct charger_data *charger =
+ container_of(work, struct charger_data, extcon_work);
+ struct extcon_dev *edev = charger->edev;
+ int current_limit;
+
+ if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) {
+ dev_dbg(charger->dev, "USB SDP charger is connected\n");
+ current_limit = 450000;
+ } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) {
+ dev_dbg(charger->dev, "USB DCP charger is connected\n");
+ current_limit = 650000;
+ } else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) {
+ dev_dbg(charger->dev, "USB FAST charger is connected\n");
+ current_limit = 650000;
+ } else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) {
+ dev_dbg(charger->dev, "USB SLOW charger is connected\n");
+ current_limit = 650000;
+ } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) {
+ dev_dbg(charger->dev, "USB CDP charger is connected\n");
+ current_limit = 650000;
+ } else {
+ dev_dbg(charger->dev, "USB charger is diconnected\n");
+ current_limit = -1;
+ }
+
+ if (current_limit > 0) {
+ int ret = regulator_set_current_limit(charger->reg, current_limit, current_limit);
+
+ if (ret) {
+ dev_err(charger->dev, "failed to set current limit: %d\n", ret);
+ return;
+ }
+ ret = regulator_enable(charger->reg);
+ if (ret)
+ dev_err(charger->dev, "failed to enable regulator: %d\n", ret);
+ } else {
+ int ret = regulator_disable(charger->reg);
+
+ if (ret)
+ dev_err(charger->dev, "failed to disable regulator: %d\n", ret);
+ }
+}
+
+static int max8997_battery_extcon_evt(struct notifier_block *nb,
+ unsigned long event, void *param)
+{
+ struct charger_data *charger =
+ container_of(nb, struct charger_data, extcon_nb);
+ schedule_work(&charger->extcon_work);
+ return NOTIFY_OK;
+}
+
static const struct power_supply_desc max8997_battery_desc = {
.name = "max8997_pmic",
.type = POWER_SUPPLY_TYPE_BATTERY,
@@ -170,6 +237,33 @@ static int max8997_battery_probe(struct platform_device *pdev)
return PTR_ERR(charger->battery);
}
+ charger->reg = devm_regulator_get(&pdev->dev, "charger");
+ if (IS_ERR(charger->reg)) {
+ dev_err(&pdev->dev, "couldn't get charger regulator\n");
+ return PTR_ERR(charger->reg);
+ }
+
+ charger->edev = extcon_get_edev_by_phandle(&pdev->dev, 0);
+ if (IS_ERR(charger->edev)) {
+ if (PTR_ERR(charger->edev) != -EPROBE_DEFER)
+ dev_err(charger->dev, "couldn't get extcon device\n");
+ return PTR_ERR(charger->edev);
+ }
+
+ INIT_WORK(&charger->extcon_work, max8997_battery_extcon_evt_worker);
+ ret = devm_add_action(&pdev->dev, max8997_battery_extcon_evt_stop_work, charger);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add extcon evt stop action: %d\n", ret);
+ return ret;
+ }
+ charger->extcon_nb.notifier_call = max8997_battery_extcon_evt;
+ ret = devm_extcon_register_notifier_all(&pdev->dev, charger->edev,
+ &charger->extcon_nb);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register extcon notifier\n");
+ return ret;
+ };
+
return 0;
}
--
2.25.1
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^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v3 5/7] ARM: dts: exynos: Added muic and charger nodes for i9100
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
` (2 preceding siblings ...)
2020-12-22 7:31 ` [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit Timon Baetz
@ 2020-12-22 7:31 ` Timon Baetz
2020-12-22 7:31 ` [PATCH v3 6/7] ARM: dts: exynos: Fix charging regulator voltage and current " Timon Baetz
2020-12-22 7:32 ` [PATCH v3 7/7] ARM: dts: exynos: Add top-off charging regulator node " Timon Baetz
5 siblings, 0 replies; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:31 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
muic node is only used for extcon consumers.
charger node is used to specify muic and regulator.
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
arch/arm/boot/dts/exynos4210-i9100.dts | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4210-i9100.dts b/arch/arm/boot/dts/exynos4210-i9100.dts
index 5370ee477186..8fa704babd5e 100644
--- a/arch/arm/boot/dts/exynos4210-i9100.dts
+++ b/arch/arm/boot/dts/exynos4210-i9100.dts
@@ -584,6 +584,16 @@ EN32KHZ_CP {
regulator-always-on;
};
};
+
+ muic: max8997-muic {
+ compatible = "maxim,max8997-muic";
+ };
+
+ charger {
+ compatible = "maxim,max8997-battery";
+ charger-supply = <&charger_reg>;
+ extcon = <&muic>;
+ };
};
};
--
2.25.1
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^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v3 6/7] ARM: dts: exynos: Fix charging regulator voltage and current for i9100
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
` (3 preceding siblings ...)
2020-12-22 7:31 ` [PATCH v3 5/7] ARM: dts: exynos: Added muic and charger nodes for i9100 Timon Baetz
@ 2020-12-22 7:31 ` Timon Baetz
2020-12-22 7:32 ` [PATCH v3 7/7] ARM: dts: exynos: Add top-off charging regulator node " Timon Baetz
5 siblings, 0 replies; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:31 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
Set CHARGER current and CHARGER_CV voltage according to Galaxy S2 Epic
4G Touch SPH-D710 Android vendor sources [0,1].
Remove regulator-always-on. The regulator can be enabled and disabled
based on extcon events.
[0] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-s2-epic-4g-touch-sph-d710-exynos4210-dump/drivers/power/max8997_charger_u1.c#L169-L170
[1] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-s2-epic-4g-touch-sph-d710-exynos4210-dump/drivers/power/max8997_charger_u1.c#L390-L391
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
arch/arm/boot/dts/exynos4210-i9100.dts | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/dts/exynos4210-i9100.dts b/arch/arm/boot/dts/exynos4210-i9100.dts
index 8fa704babd5e..586d801af0b5 100644
--- a/arch/arm/boot/dts/exynos4210-i9100.dts
+++ b/arch/arm/boot/dts/exynos4210-i9100.dts
@@ -562,15 +562,14 @@ safe2_sreg: ESAFEOUT2 {
charger_reg: CHARGER {
regulator-name = "CHARGER";
- regulator-min-microamp = <60000>;
- regulator-max-microamp = <2580000>;
- regulator-always-on;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <950000>;
};
chargercv_reg: CHARGER_CV {
regulator-name = "CHARGER_CV";
- regulator-min-microvolt = <3800000>;
- regulator-max-microvolt = <4100000>;
+ regulator-min-microvolt = <4200000>;
+ regulator-max-microvolt = <4200000>;
regulator-always-on;
};
--
2.25.1
_______________________________________________
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^ permalink raw reply related [flat|nested] 15+ messages in thread
* [PATCH v3 7/7] ARM: dts: exynos: Add top-off charging regulator node for i9100
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
` (4 preceding siblings ...)
2020-12-22 7:31 ` [PATCH v3 6/7] ARM: dts: exynos: Fix charging regulator voltage and current " Timon Baetz
@ 2020-12-22 7:32 ` Timon Baetz
5 siblings, 0 replies; 15+ messages in thread
From: Timon Baetz @ 2020-12-22 7:32 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, Timon Baetz, linux-pm,
linux-kernel, Mark Brown, Liam Girdwood, Rob Herring,
Sebastian Reichel, Chanwoo Choi, MyungJoo Ham,
~postmarketos/upstreaming, Lee Jones, linux-arm-kernel
Value taken from Galaxy S2 Epic 4G Touch SPH-D710 Android vendor
kernel [0] which always sets 200mA.
Also rearrange regulators based on definition in max8997.h.
[0] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-s2-epic-4g-touch-sph-d710-exynos4210-dump/drivers/power/sec_battery_u1.c#L1525
Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
---
arch/arm/boot/dts/exynos4210-i9100.dts | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/arch/arm/boot/dts/exynos4210-i9100.dts b/arch/arm/boot/dts/exynos4210-i9100.dts
index 586d801af0b5..e702adb69670 100644
--- a/arch/arm/boot/dts/exynos4210-i9100.dts
+++ b/arch/arm/boot/dts/exynos4210-i9100.dts
@@ -560,6 +560,16 @@ safe2_sreg: ESAFEOUT2 {
regulator-boot-on;
};
+ EN32KHZ_AP {
+ regulator-name = "EN32KHZ_AP";
+ regulator-always-on;
+ };
+
+ EN32KHZ_CP {
+ regulator-name = "EN32KHZ_CP";
+ regulator-always-on;
+ };
+
charger_reg: CHARGER {
regulator-name = "CHARGER";
regulator-min-microamp = <200000>;
@@ -573,13 +583,10 @@ chargercv_reg: CHARGER_CV {
regulator-always-on;
};
- EN32KHZ_AP {
- regulator-name = "EN32KHZ_AP";
- regulator-always-on;
- };
-
- EN32KHZ_CP {
- regulator-name = "EN32KHZ_CP";
+ CHARGER_TOPOFF {
+ regulator-name = "CHARGER_TOPOFF";
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
regulator-always-on;
};
};
--
2.25.1
_______________________________________________
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^ permalink raw reply related [flat|nested] 15+ messages in thread
* Re: [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes
2020-12-22 7:31 ` [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes Timon Baetz
@ 2020-12-22 8:37 ` Krzysztof Kozlowski
0 siblings, 0 replies; 15+ messages in thread
From: Krzysztof Kozlowski @ 2020-12-22 8:37 UTC (permalink / raw)
To: Timon Baetz
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Rob Herring, Sebastian Reichel,
Chanwoo Choi, MyungJoo Ham, ~postmarketos/upstreaming, Lee Jones,
linux-arm-kernel
On Tue, Dec 22, 2020 at 07:31:21AM +0000, Timon Baetz wrote:
> Add maxim,max8997-battery and maxim,max8997-muic optional nodes.
>
> Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> ---
> .../bindings/regulator/max8997-regulator.txt | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Best regards,
Krzysztof
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell
2020-12-22 7:31 ` [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell Timon Baetz
@ 2020-12-22 8:37 ` Krzysztof Kozlowski
2020-12-22 9:55 ` Lee Jones
1 sibling, 0 replies; 15+ messages in thread
From: Krzysztof Kozlowski @ 2020-12-22 8:37 UTC (permalink / raw)
To: Timon Baetz
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Rob Herring, Sebastian Reichel,
Chanwoo Choi, MyungJoo Ham, ~postmarketos/upstreaming, Lee Jones,
linux-arm-kernel
On Tue, Dec 22, 2020 at 07:31:32AM +0000, Timon Baetz wrote:
> Add of_compatible ("maxim,max8997-muic") to the mfd_cell to have a
> of_node set in the extcon driver.
>
> Add of_compatible ("maxim,max8997-battery") to the mfd_cell to configure
> the charger driver.
>
> Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> ---
> drivers/mfd/max8997.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Best regards,
Krzysztof
_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit
2020-12-22 7:31 ` [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit Timon Baetz
@ 2020-12-22 8:40 ` Krzysztof Kozlowski
2020-12-23 8:09 ` Timon Baetz
0 siblings, 1 reply; 15+ messages in thread
From: Krzysztof Kozlowski @ 2020-12-22 8:40 UTC (permalink / raw)
To: Timon Baetz
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Rob Herring, Sebastian Reichel,
Chanwoo Choi, MyungJoo Ham, ~postmarketos/upstreaming, Lee Jones,
linux-arm-kernel
On Tue, Dec 22, 2020 at 07:31:40AM +0000, Timon Baetz wrote:
> Register for extcon notification and set charging current depending on
> the detected cable type. Current values are taken from vendor kernel,
> where most charger types end up setting 650mA [0].
>
> Also enable and disable the CHARGER regulator based on extcon events.
>
> [0] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-s2-epic-4g-touch-sph-d710-exynos4210-dump/drivers/misc/max8997-muic.c#L1675-L1678
>
> Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> ---
> drivers/power/supply/max8997_charger.c | 94 ++++++++++++++++++++++++++
> 1 file changed, 94 insertions(+)
>
> diff --git a/drivers/power/supply/max8997_charger.c b/drivers/power/supply/max8997_charger.c
> index 1947af25879a..673ffff14ae0 100644
> --- a/drivers/power/supply/max8997_charger.c
> +++ b/drivers/power/supply/max8997_charger.c
> @@ -6,12 +6,14 @@
> // MyungJoo Ham <myungjoo.ham@samsung.com>
>
> #include <linux/err.h>
> +#include <linux/extcon.h>
> #include <linux/module.h>
> #include <linux/slab.h>
> #include <linux/platform_device.h>
> #include <linux/power_supply.h>
> #include <linux/mfd/max8997.h>
> #include <linux/mfd/max8997-private.h>
> +#include <linux/regulator/consumer.h>
>
> /* MAX8997_REG_STATUS4 */
> #define DCINOK_SHIFT 1
> @@ -31,6 +33,10 @@ struct charger_data {
> struct device *dev;
> struct max8997_dev *iodev;
> struct power_supply *battery;
> + struct regulator *reg;
> + struct extcon_dev *edev;
> + struct notifier_block extcon_nb;
> + struct work_struct extcon_work;
> };
>
> static enum power_supply_property max8997_battery_props[] = {
> @@ -88,6 +94,67 @@ static int max8997_battery_get_property(struct power_supply *psy,
> return 0;
> }
>
> +static void max8997_battery_extcon_evt_stop_work(void *data)
> +{
> + struct charger_data *charger = data;
> +
> + cancel_work_sync(&charger->extcon_work);
> +}
> +
> +static void max8997_battery_extcon_evt_worker(struct work_struct *work)
> +{
> + struct charger_data *charger =
> + container_of(work, struct charger_data, extcon_work);
> + struct extcon_dev *edev = charger->edev;
> + int current_limit;
> +
> + if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) {
> + dev_dbg(charger->dev, "USB SDP charger is connected\n");
> + current_limit = 450000;
> + } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) {
> + dev_dbg(charger->dev, "USB DCP charger is connected\n");
> + current_limit = 650000;
> + } else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) {
> + dev_dbg(charger->dev, "USB FAST charger is connected\n");
> + current_limit = 650000;
> + } else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) {
> + dev_dbg(charger->dev, "USB SLOW charger is connected\n");
> + current_limit = 650000;
> + } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) {
> + dev_dbg(charger->dev, "USB CDP charger is connected\n");
> + current_limit = 650000;
> + } else {
> + dev_dbg(charger->dev, "USB charger is diconnected\n");
> + current_limit = -1;
> + }
> +
> + if (current_limit > 0) {
> + int ret = regulator_set_current_limit(charger->reg, current_limit, current_limit);
> +
> + if (ret) {
> + dev_err(charger->dev, "failed to set current limit: %d\n", ret);
> + return;
> + }
> + ret = regulator_enable(charger->reg);
> + if (ret)
> + dev_err(charger->dev, "failed to enable regulator: %d\n", ret);
> + } else {
> + int ret = regulator_disable(charger->reg);
> +
> + if (ret)
> + dev_err(charger->dev, "failed to disable regulator: %d\n", ret);
> + }
> +}
> +
> +static int max8997_battery_extcon_evt(struct notifier_block *nb,
> + unsigned long event, void *param)
> +{
> + struct charger_data *charger =
> + container_of(nb, struct charger_data, extcon_nb);
> + schedule_work(&charger->extcon_work);
> + return NOTIFY_OK;
> +}
> +
> static const struct power_supply_desc max8997_battery_desc = {
> .name = "max8997_pmic",
> .type = POWER_SUPPLY_TYPE_BATTERY,
> @@ -170,6 +237,33 @@ static int max8997_battery_probe(struct platform_device *pdev)
> return PTR_ERR(charger->battery);
> }
>
> + charger->reg = devm_regulator_get(&pdev->dev, "charger");
The code looks good but isn't it breaking all existing platforms?
Best regards,
Krzysztof
> + if (IS_ERR(charger->reg)) {
> + dev_err(&pdev->dev, "couldn't get charger regulator\n");
> + return PTR_ERR(charger->reg);
> + }
> +
_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell
2020-12-22 7:31 ` [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell Timon Baetz
2020-12-22 8:37 ` Krzysztof Kozlowski
@ 2020-12-22 9:55 ` Lee Jones
2021-02-11 21:11 ` Timon Baetz
1 sibling, 1 reply; 15+ messages in thread
From: Lee Jones @ 2020-12-22 9:55 UTC (permalink / raw)
To: Timon Baetz
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Krzysztof Kozlowski,
Sebastian Reichel, Chanwoo Choi, Rob Herring, MyungJoo Ham,
linux-arm-kernel, ~postmarketos/upstreaming
On Tue, 22 Dec 2020, Timon Baetz wrote:
> Add of_compatible ("maxim,max8997-muic") to the mfd_cell to have a
> of_node set in the extcon driver.
>
> Add of_compatible ("maxim,max8997-battery") to the mfd_cell to configure
> the charger driver.
>
> Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> ---
> drivers/mfd/max8997.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Applied, thanks.
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit
2020-12-22 8:40 ` Krzysztof Kozlowski
@ 2020-12-23 8:09 ` Timon Baetz
2020-12-23 8:27 ` Krzysztof Kozlowski
0 siblings, 1 reply; 15+ messages in thread
From: Timon Baetz @ 2020-12-23 8:09 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Rob Herring, Sebastian Reichel,
Chanwoo Choi, MyungJoo Ham, ~postmarketos/upstreaming, Lee Jones,
linux-arm-kernel
On Tue, 22 Dec 2020 09:40:04 +0100, Krzysztof Kozlowski wrote:
> On Tue, Dec 22, 2020 at 07:31:40AM +0000, Timon Baetz wrote:
> > Register for extcon notification and set charging current depending on
> > the detected cable type. Current values are taken from vendor kernel,
> > where most charger types end up setting 650mA [0].
> >
> > Also enable and disable the CHARGER regulator based on extcon events.
> >
> > [0] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-s2-epic-4g-touch-sph-d710-exynos4210-dump/drivers/misc/max8997-muic.c#L1675-L1678
> >
> > Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> > ---
> > drivers/power/supply/max8997_charger.c | 94 ++++++++++++++++++++++++++
> > 1 file changed, 94 insertions(+)
> >
> > diff --git a/drivers/power/supply/max8997_charger.c b/drivers/power/supply/max8997_charger.c
> > index 1947af25879a..673ffff14ae0 100644
> > --- a/drivers/power/supply/max8997_charger.c
> > +++ b/drivers/power/supply/max8997_charger.c
> > @@ -6,12 +6,14 @@
> > // MyungJoo Ham <myungjoo.ham@samsung.com>
> >
> > #include <linux/err.h>
> > +#include <linux/extcon.h>
> > #include <linux/module.h>
> > #include <linux/slab.h>
> > #include <linux/platform_device.h>
> > #include <linux/power_supply.h>
> > #include <linux/mfd/max8997.h>
> > #include <linux/mfd/max8997-private.h>
> > +#include <linux/regulator/consumer.h>
> >
> > /* MAX8997_REG_STATUS4 */
> > #define DCINOK_SHIFT 1
> > @@ -31,6 +33,10 @@ struct charger_data {
> > struct device *dev;
> > struct max8997_dev *iodev;
> > struct power_supply *battery;
> > + struct regulator *reg;
> > + struct extcon_dev *edev;
> > + struct notifier_block extcon_nb;
> > + struct work_struct extcon_work;
> > };
> >
> > static enum power_supply_property max8997_battery_props[] = {
> > @@ -88,6 +94,67 @@ static int max8997_battery_get_property(struct power_supply *psy,
> > return 0;
> > }
> >
> > +static void max8997_battery_extcon_evt_stop_work(void *data)
> > +{
> > + struct charger_data *charger = data;
> > +
> > + cancel_work_sync(&charger->extcon_work);
> > +}
> > +
> > +static void max8997_battery_extcon_evt_worker(struct work_struct *work)
> > +{
> > + struct charger_data *charger =
> > + container_of(work, struct charger_data, extcon_work);
> > + struct extcon_dev *edev = charger->edev;
> > + int current_limit;
> > +
> > + if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) {
> > + dev_dbg(charger->dev, "USB SDP charger is connected\n");
> > + current_limit = 450000;
> > + } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) {
> > + dev_dbg(charger->dev, "USB DCP charger is connected\n");
> > + current_limit = 650000;
> > + } else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) {
> > + dev_dbg(charger->dev, "USB FAST charger is connected\n");
> > + current_limit = 650000;
> > + } else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) {
> > + dev_dbg(charger->dev, "USB SLOW charger is connected\n");
> > + current_limit = 650000;
> > + } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) {
> > + dev_dbg(charger->dev, "USB CDP charger is connected\n");
> > + current_limit = 650000;
> > + } else {
> > + dev_dbg(charger->dev, "USB charger is diconnected\n");
> > + current_limit = -1;
> > + }
> > +
> > + if (current_limit > 0) {
> > + int ret = regulator_set_current_limit(charger->reg, current_limit, current_limit);
> > +
> > + if (ret) {
> > + dev_err(charger->dev, "failed to set current limit: %d\n", ret);
> > + return;
> > + }
> > + ret = regulator_enable(charger->reg);
> > + if (ret)
> > + dev_err(charger->dev, "failed to enable regulator: %d\n", ret);
> > + } else {
> > + int ret = regulator_disable(charger->reg);
> > +
> > + if (ret)
> > + dev_err(charger->dev, "failed to disable regulator: %d\n", ret);
> > + }
> > +}
> > +
> > +static int max8997_battery_extcon_evt(struct notifier_block *nb,
> > + unsigned long event, void *param)
> > +{
> > + struct charger_data *charger =
> > + container_of(nb, struct charger_data, extcon_nb);
> > + schedule_work(&charger->extcon_work);
> > + return NOTIFY_OK;
> > +}
> > +
> > static const struct power_supply_desc max8997_battery_desc = {
> > .name = "max8997_pmic",
> > .type = POWER_SUPPLY_TYPE_BATTERY,
> > @@ -170,6 +237,33 @@ static int max8997_battery_probe(struct platform_device *pdev)
> > return PTR_ERR(charger->battery);
> > }
> >
> > + charger->reg = devm_regulator_get(&pdev->dev, "charger");
>
> The code looks good but isn't it breaking all existing platforms?
So there is 2 other DTS in the kernel sources that are using MAX8997
pmic:
- Insignal Origen evaluation board
- Samsung Trats
Non of them have charging regulators.
Also probing of the charger has been failing for long time because of
https://lore.kernel.org/lkml/20201109194251.562203-2-timon.baetz@protonmail.com/
but that seems to land in 5.11.
That being said, I guess I could make extcon and charger-supply
optional if you prefer.
Thanks again for reviewing,
Timon
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit
2020-12-23 8:09 ` Timon Baetz
@ 2020-12-23 8:27 ` Krzysztof Kozlowski
0 siblings, 0 replies; 15+ messages in thread
From: Krzysztof Kozlowski @ 2020-12-23 8:27 UTC (permalink / raw)
To: Timon Baetz
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Rob Herring, Sebastian Reichel,
Chanwoo Choi, MyungJoo Ham, ~postmarketos/upstreaming, Lee Jones,
linux-arm-kernel
On Wed, Dec 23, 2020 at 08:09:55AM +0000, Timon Baetz wrote:
> On Tue, 22 Dec 2020 09:40:04 +0100, Krzysztof Kozlowski wrote:
(...)
> > > .name = "max8997_pmic",
> > > .type = POWER_SUPPLY_TYPE_BATTERY,
> > > @@ -170,6 +237,33 @@ static int max8997_battery_probe(struct platform_device *pdev)
> > > return PTR_ERR(charger->battery);
> > > }
> > >
> > > + charger->reg = devm_regulator_get(&pdev->dev, "charger");
> >
> > The code looks good but isn't it breaking all existing platforms?
>
> So there is 2 other DTS in the kernel sources that are using MAX8997
> pmic:
> - Insignal Origen evaluation board
> - Samsung Trats
> Non of them have charging regulators.
But still the power supply was probing on them (if not the error you
mentioned). Now, the charger will fail.
> Also probing of the charger has been failing for long time because of
> https://lore.kernel.org/lkml/20201109194251.562203-2-timon.baetz@protonmail.com/
> but that seems to land in 5.11.
That's a good argument supporting introduced breakage. Use it in commit
message. Don't hide such information.
> That being said, I guess I could make extcon and charger-supply
> optional if you prefer.
Since at least two boards will loose now power supply, I don't think you
have a choice.
Best regards,
Krzysztof
_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell
2020-12-22 9:55 ` Lee Jones
@ 2021-02-11 21:11 ` Timon Baetz
2021-02-12 9:37 ` Lee Jones
0 siblings, 1 reply; 15+ messages in thread
From: Timon Baetz @ 2021-02-11 21:11 UTC (permalink / raw)
To: Lee Jones
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Krzysztof Kozlowski,
Sebastian Reichel, Chanwoo Choi, Rob Herring, MyungJoo Ham,
linux-arm-kernel, ~postmarketos/upstreaming
On Tue, 22 Dec 2020 09:55:22 +0000, Lee Jones wrote:
> On Tue, 22 Dec 2020, Timon Baetz wrote:
>
> > Add of_compatible ("maxim,max8997-muic") to the mfd_cell to have a
> > of_node set in the extcon driver.
> >
> > Add of_compatible ("maxim,max8997-battery") to the mfd_cell to configure
> > the charger driver.
> >
> > Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> > ---
> > drivers/mfd/max8997.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
>
> Applied, thanks.
Once https://lore.kernel.org/lkml/20210130172747.2022977-1-timon.baetz@protonmail.com/
gets accepted, this is not needed anymore. Can this be reverted or
should I create a new patch?
Thanks,
Timon
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell
2021-02-11 21:11 ` Timon Baetz
@ 2021-02-12 9:37 ` Lee Jones
0 siblings, 0 replies; 15+ messages in thread
From: Lee Jones @ 2021-02-12 9:37 UTC (permalink / raw)
To: Timon Baetz
Cc: devicetree, linux-samsung-soc, linux-pm, linux-kernel,
Mark Brown, Liam Girdwood, Krzysztof Kozlowski,
Sebastian Reichel, Chanwoo Choi, Rob Herring, MyungJoo Ham,
linux-arm-kernel, ~postmarketos/upstreaming
On Thu, 11 Feb 2021, Timon Baetz wrote:
> On Tue, 22 Dec 2020 09:55:22 +0000, Lee Jones wrote:
> > On Tue, 22 Dec 2020, Timon Baetz wrote:
> >
> > > Add of_compatible ("maxim,max8997-muic") to the mfd_cell to have a
> > > of_node set in the extcon driver.
> > >
> > > Add of_compatible ("maxim,max8997-battery") to the mfd_cell to configure
> > > the charger driver.
> > >
> > > Signed-off-by: Timon Baetz <timon.baetz@protonmail.com>
> > > ---
> > > drivers/mfd/max8997.c | 4 ++--
> > > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > Applied, thanks.
>
> Once https://lore.kernel.org/lkml/20210130172747.2022977-1-timon.baetz@protonmail.com/
> gets accepted, this is not needed anymore. Can this be reverted or
> should I create a new patch?
Please submit a revert with the reasons why.
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 15+ messages in thread
end of thread, other threads:[~2021-02-12 9:38 UTC | newest]
Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-22 7:31 [PATCH v3 1/7] extcon: max8997: Add CHGINS and CHGRM interrupt handling Timon Baetz
2020-12-22 7:31 ` [PATCH v3 2/7] regulator: dt-bindings: Document max8997-pmic nodes Timon Baetz
2020-12-22 8:37 ` Krzysztof Kozlowski
2020-12-22 7:31 ` [PATCH v3 3/7] mfd: max8997: Add of_compatible to extcon and charger mfd_cell Timon Baetz
2020-12-22 8:37 ` Krzysztof Kozlowski
2020-12-22 9:55 ` Lee Jones
2021-02-11 21:11 ` Timon Baetz
2021-02-12 9:37 ` Lee Jones
2020-12-22 7:31 ` [PATCH v3 4/7] power: supply: max8997_charger: Set CHARGER current limit Timon Baetz
2020-12-22 8:40 ` Krzysztof Kozlowski
2020-12-23 8:09 ` Timon Baetz
2020-12-23 8:27 ` Krzysztof Kozlowski
2020-12-22 7:31 ` [PATCH v3 5/7] ARM: dts: exynos: Added muic and charger nodes for i9100 Timon Baetz
2020-12-22 7:31 ` [PATCH v3 6/7] ARM: dts: exynos: Fix charging regulator voltage and current " Timon Baetz
2020-12-22 7:32 ` [PATCH v3 7/7] ARM: dts: exynos: Add top-off charging regulator node " Timon Baetz
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