* [PATCH v4 0/4]
@ 2016-05-06 5:19 Michael Haas
[not found] ` <1462511991-1911-1-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
0 siblings, 1 reply; 8+ messages in thread
From: Michael Haas @ 2016-05-06 5:19 UTC (permalink / raw)
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8, wens-jdAy2FN1RRM,
lee.jones-QSEj5FYQhm4dnm+yROfE0A, sre-DgEjT+Ai2ygdnm+yROfE0A,
dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ
Cc: hdegoede-H+wXaHxf7aLQT0dZR+AlfA,
bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-pm-u79uwXL29TY76Z2rM5mHXA, linux-lFZ/pmaqli7XmaaqVzeoHQ,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw
Changes in v4:
* Mark AC power driver as disabled by default in axp209.dtsi
* Drop patch enabling USB power driver by default
* Add Acked-By Rob Herring and Chen-Yu Tsai
Changes in v3:
* Move register definitions back from MFD header to driver itself
* Globally enable AC power supply driver in axp209.dtsi
* Additionally enable USB power supply driver in axp209.dtsi
* Fix formatting and ordering issues noted by Chen-Yu Tsai
* Drop Rob Herring's ACKED-BY on the binding documentation patch as I have
simplified the example
Changes in v2:
* Remove check for shortcut between AC and USB
* Remove logging in interrupt handler
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v4 1/4] power: Add an axp20x-ac-power driver
[not found] ` <1462511991-1911-1-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
@ 2016-05-06 5:19 ` Michael Haas
2016-05-09 16:33 ` Chen-Yu Tsai
2016-05-06 5:19 ` [PATCH v4 2/4] mfd: axp20x: Add a cell for the ac power_supply part of the axp20x PMICs Michael Haas
` (2 subsequent siblings)
3 siblings, 1 reply; 8+ messages in thread
From: Michael Haas @ 2016-05-06 5:19 UTC (permalink / raw)
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8, wens-jdAy2FN1RRM,
lee.jones-QSEj5FYQhm4dnm+yROfE0A, sre-DgEjT+Ai2ygdnm+yROfE0A,
dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ
Cc: hdegoede-H+wXaHxf7aLQT0dZR+AlfA,
bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-pm-u79uwXL29TY76Z2rM5mHXA, linux-lFZ/pmaqli7XmaaqVzeoHQ,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Michael Haas
This adds a driver for the ac power_supply bits of the axp20x
PMICs.
This submission is taken directly from Bruno Prémonts 2015 RFC [0].
The original RFC contains drivers for AC, battery and backup
battery. This commit only adds the AC driver for now.
[0] http://permalink.gmane.org/gmane.comp.hardware.netbook.arm.sunxi/17980
Signed-off-by: Michael Haas <haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
---
drivers/power/Makefile | 2 +-
drivers/power/axp20x_ac_power.c | 181 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 182 insertions(+), 1 deletion(-)
create mode 100644 drivers/power/axp20x_ac_power.c
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index e46b75d..3a785cc 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -9,7 +9,7 @@ obj-$(CONFIG_GENERIC_ADC_BATTERY) += generic-adc-battery.o
obj-$(CONFIG_PDA_POWER) += pda_power.o
obj-$(CONFIG_APM_POWER) += apm_power.o
-obj-$(CONFIG_AXP20X_POWER) += axp20x_usb_power.o
+obj-$(CONFIG_AXP20X_POWER) += axp20x_usb_power.o axp20x_ac_power.o
obj-$(CONFIG_MAX8925_POWER) += max8925_power.o
obj-$(CONFIG_WM831X_BACKUP) += wm831x_backup.o
obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
diff --git a/drivers/power/axp20x_ac_power.c b/drivers/power/axp20x_ac_power.c
new file mode 100644
index 0000000..0d1ca0e
--- /dev/null
+++ b/drivers/power/axp20x_ac_power.c
@@ -0,0 +1,181 @@
+/*
+ * AXP20x PMIC AC power driver
+ *
+ * Copyright 2014-2015 Bruno Prémont <bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy@public.gmane.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/mfd/axp20x.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define DRVNAME "axp20x-ac-power"
+
+
+/* Fields of AXP20X_PWR_INPUT_STATUS */
+#define AXP20X_PWR_STATUS_AC_PRESENT BIT(7)
+#define AXP20X_PWR_STATUS_AC_AVAILABLE BIT(6)
+#define AXP20X_PWR_STATUS_AC_VBUS_SHORT BIT(1)
+#define AXP20X_PWR_STATUS_AC_VBUS_SEL BIT(0)
+
+/* Fields of AXP20X_ADC_EN1 */
+#define AXP20X_ADC_EN1_ACIN_VOLT BIT(5)
+#define AXP20X_ADC_EN1_ACIN_CURR BIT(4)
+
+
+struct axp20x_ac_power {
+ struct regmap *regmap;
+ struct power_supply *supply;
+};
+
+static int axp20x_ac_power_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
+ unsigned int input;
+ int r;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ r = axp20x_read_variable_width(power->regmap,
+ AXP20X_ACIN_V_ADC_H, 12);
+ if (r < 0)
+ return r;
+
+ val->intval = r * 1700; /* 1 step = 1.7 mV */
+ return 0;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ r = axp20x_read_variable_width(power->regmap,
+ AXP20X_ACIN_I_ADC_H, 12);
+ if (r < 0)
+ return r;
+
+ val->intval = r * 375; /* 1 step = 0.375 mA */
+ return 0;
+ default:
+ break;
+ }
+
+ /* All the properties below need the input-status reg value */
+ r = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &input);
+ if (r)
+ return r;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = !!(input & AXP20X_PWR_STATUS_AC_PRESENT);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = !!(input & AXP20X_PWR_STATUS_AC_AVAILABLE);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property axp20x_ac_power_properties[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static const struct power_supply_desc axp20x_ac_power_desc = {
+ .name = "axp20x-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = axp20x_ac_power_properties,
+ .num_properties = ARRAY_SIZE(axp20x_ac_power_properties),
+ .get_property = axp20x_ac_power_get_property,
+};
+
+static irqreturn_t axp20x_irq_ac_handler(int irq, void *devid)
+{
+ struct axp20x_ac_power *power = devid;
+
+ power_supply_changed(power->supply);
+
+ return IRQ_HANDLED;
+}
+
+static int axp20x_ac_power_probe(struct platform_device *pdev)
+{
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+ struct power_supply_config psy_cfg = {};
+ struct axp20x_ac_power *power;
+ static const char * const irq_names[] = { "ACIN_PLUGIN",
+ "ACIN_REMOVAL", "ACIN_OVER_V" };
+ int i, irq, r;
+
+ power = devm_kzalloc(&pdev->dev, sizeof(*power), GFP_KERNEL);
+ if (!power)
+ return -ENOMEM;
+
+ power->regmap = axp20x->regmap;
+
+ /* Enable ac voltage and current measurement */
+ r = regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
+ AXP20X_ADC_EN1_ACIN_CURR | AXP20X_ADC_EN1_ACIN_VOLT,
+ AXP20X_ADC_EN1_ACIN_CURR | AXP20X_ADC_EN1_ACIN_VOLT);
+ if (r)
+ return r;
+
+ psy_cfg.of_node = pdev->dev.of_node;
+ psy_cfg.drv_data = power;
+
+ power->supply = devm_power_supply_register(&pdev->dev,
+ &axp20x_ac_power_desc, &psy_cfg);
+ if (IS_ERR(power->supply))
+ return PTR_ERR(power->supply);
+
+ /* Request irqs after registering, as irqs may trigger immediately */
+ for (i = 0; i < ARRAY_SIZE(irq_names); i++) {
+ irq = platform_get_irq_byname(pdev, irq_names[i]);
+ if (irq < 0) {
+ dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
+ irq_names[i], irq);
+ continue;
+ }
+ irq = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
+ r = devm_request_any_context_irq(&pdev->dev, irq,
+ axp20x_irq_ac_handler, 0, DRVNAME, power);
+ if (r < 0)
+ dev_warn(&pdev->dev, "Error requesting %s IRQ: %d\n",
+ irq_names[i], r);
+ }
+
+ return 0;
+}
+
+static const struct of_device_id axp20x_ac_power_match[] = {
+ { .compatible = "x-powers,axp202-ac-power-supply" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, axp20x_ac_power_match);
+
+static struct platform_driver axp20x_ac_power_driver = {
+ .probe = axp20x_ac_power_probe,
+ .driver = {
+ .name = DRVNAME,
+ .of_match_table = axp20x_ac_power_match,
+ },
+};
+
+module_platform_driver(axp20x_ac_power_driver);
+
+MODULE_AUTHOR("Bruno Prémont <bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy@public.gmane.org>");
+MODULE_DESCRIPTION("AXP20x PMIC AC power supply status driver");
+MODULE_LICENSE("GPL");
--
2.8.2
--
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^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v4 2/4] mfd: axp20x: Add a cell for the ac power_supply part of the axp20x PMICs
[not found] ` <1462511991-1911-1-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
2016-05-06 5:19 ` [PATCH v4 1/4] power: Add an axp20x-ac-power driver Michael Haas
@ 2016-05-06 5:19 ` Michael Haas
[not found] ` <1462511991-1911-3-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
2016-05-06 5:19 ` [PATCH v4 3/4] ARM: dts: Add binding documentation for AXP20x pmic ac power supply Michael Haas
2016-05-06 5:19 ` [PATCH v4 4/4] ARM: dts: axp209: Add ac_power_supply child node to the ax209 node Michael Haas
3 siblings, 1 reply; 8+ messages in thread
From: Michael Haas @ 2016-05-06 5:19 UTC (permalink / raw)
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8, wens-jdAy2FN1RRM,
lee.jones-QSEj5FYQhm4dnm+yROfE0A, sre-DgEjT+Ai2ygdnm+yROfE0A,
dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ
Cc: hdegoede-H+wXaHxf7aLQT0dZR+AlfA,
bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-pm-u79uwXL29TY76Z2rM5mHXA, linux-lFZ/pmaqli7XmaaqVzeoHQ,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Michael Haas
As a counterpart to the usb power_supply cell, this commit adds an AC
power_supply cell to the axp20x driver.
Still missing are the RTC backup battery and the main battery charger
cells.
Signed-off-by: Michael Haas <haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
Acked-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
---
drivers/mfd/axp20x.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index a57d6e9..aa6ef08 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -128,6 +128,12 @@ static struct resource axp152_pek_resources[] = {
DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
};
+static 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"),
+ DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_OVER_V, "ACIN_OVER_V"),
+};
+
static struct resource axp20x_pek_resources[] = {
{
.name = "PEK_DBR",
@@ -436,6 +442,11 @@ static struct mfd_cell axp20x_cells[] = {
}, {
.name = "axp20x-regulator",
}, {
+ .name = "axp20x-ac-power-supply",
+ .of_compatible = "x-powers,axp202-ac-power-supply",
+ .num_resources = ARRAY_SIZE(axp20x_ac_power_supply_resources),
+ .resources = axp20x_ac_power_supply_resources,
+ }, {
.name = "axp20x-usb-power-supply",
.of_compatible = "x-powers,axp202-usb-power-supply",
.num_resources = ARRAY_SIZE(axp20x_usb_power_supply_resources),
--
2.8.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v4 3/4] ARM: dts: Add binding documentation for AXP20x pmic ac power supply
[not found] ` <1462511991-1911-1-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
2016-05-06 5:19 ` [PATCH v4 1/4] power: Add an axp20x-ac-power driver Michael Haas
2016-05-06 5:19 ` [PATCH v4 2/4] mfd: axp20x: Add a cell for the ac power_supply part of the axp20x PMICs Michael Haas
@ 2016-05-06 5:19 ` Michael Haas
2016-05-06 5:19 ` [PATCH v4 4/4] ARM: dts: axp209: Add ac_power_supply child node to the ax209 node Michael Haas
3 siblings, 0 replies; 8+ messages in thread
From: Michael Haas @ 2016-05-06 5:19 UTC (permalink / raw)
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8, wens-jdAy2FN1RRM,
lee.jones-QSEj5FYQhm4dnm+yROfE0A, sre-DgEjT+Ai2ygdnm+yROfE0A,
dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ
Cc: hdegoede-H+wXaHxf7aLQT0dZR+AlfA,
bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-pm-u79uwXL29TY76Z2rM5mHXA, linux-lFZ/pmaqli7XmaaqVzeoHQ,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Michael Haas
Add binding documentation for the ac power supply part of the AXP20x
pmic.
Signed-off-by: Michael Haas <haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
.../bindings/power_supply/axp20x_ac_power.txt | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power_supply/axp20x_ac_power.txt
diff --git a/Documentation/devicetree/bindings/power_supply/axp20x_ac_power.txt b/Documentation/devicetree/bindings/power_supply/axp20x_ac_power.txt
new file mode 100644
index 0000000..1cebe35
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/axp20x_ac_power.txt
@@ -0,0 +1,17 @@
+AXP20x AC power supply
+
+Required Properties:
+-compatible: "x-powers,axp202-ac-power-supply"
+
+This node is a subnode of the axp20x PMIC.
+
+Example:
+
+axp209: pmic@34 {
+
+ ac-power-supply: ac-power-supply {
+ compatible = "x-powers,axp202-ac-power-supply";
+ };
+
+ ...
+};
--
2.8.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v4 4/4] ARM: dts: axp209: Add ac_power_supply child node to the ax209 node
[not found] ` <1462511991-1911-1-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
` (2 preceding siblings ...)
2016-05-06 5:19 ` [PATCH v4 3/4] ARM: dts: Add binding documentation for AXP20x pmic ac power supply Michael Haas
@ 2016-05-06 5:19 ` Michael Haas
3 siblings, 0 replies; 8+ messages in thread
From: Michael Haas @ 2016-05-06 5:19 UTC (permalink / raw)
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8, wens-jdAy2FN1RRM,
lee.jones-QSEj5FYQhm4dnm+yROfE0A, sre-DgEjT+Ai2ygdnm+yROfE0A,
dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ
Cc: hdegoede-H+wXaHxf7aLQT0dZR+AlfA,
bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-pm-u79uwXL29TY76Z2rM5mHXA, linux-lFZ/pmaqli7XmaaqVzeoHQ,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Michael Haas
Add a node representing the ac power supply part of the axp209 pmic.
Signed-off-by: Michael Haas <haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
---
arch/arm/boot/dts/axp209.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts/axp209.dtsi b/arch/arm/boot/dts/axp209.dtsi
index 051ab3b..bdf8fe8 100644
--- a/arch/arm/boot/dts/axp209.dtsi
+++ b/arch/arm/boot/dts/axp209.dtsi
@@ -90,8 +90,14 @@
};
};
+ ac_power_supply: ac_power_supply {
+ compatible = "x-powers,axp202-ac-power-supply";
+ status = "disabled";
+ };
+
usb_power_supply: usb_power_supply {
compatible = "x-powers,axp202-usb-power-supply";
status = "disabled";
};
+
};
--
2.8.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH v4 2/4] mfd: axp20x: Add a cell for the ac power_supply part of the axp20x PMICs
[not found] ` <1462511991-1911-3-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
@ 2016-05-09 8:06 ` Lee Jones
0 siblings, 0 replies; 8+ messages in thread
From: Lee Jones @ 2016-05-09 8:06 UTC (permalink / raw)
To: Michael Haas
Cc: robh+dt-DgEjT+Ai2ygdnm+yROfE0A, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8, wens-jdAy2FN1RRM,
sre-DgEjT+Ai2ygdnm+yROfE0A, dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w,
dwmw2-wEGCiKHe2LqWVfeAwA7xHQ, hdegoede-H+wXaHxf7aLQT0dZR+AlfA,
bonbons-ud5FBsm0p/xEiooADzr8i9i2O/JbrIOy,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-pm-u79uwXL29TY76Z2rM5mHXA, linux-lFZ/pmaqli7XmaaqVzeoHQ,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw
On Fri, 06 May 2016, Michael Haas wrote:
> As a counterpart to the usb power_supply cell, this commit adds an AC
> power_supply cell to the axp20x driver.
>
> Still missing are the RTC backup battery and the main battery charger
> cells.
>
> Signed-off-by: Michael Haas <haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
> Acked-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
> ---
> drivers/mfd/axp20x.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
Applied, thanks.
> diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
> index a57d6e9..aa6ef08 100644
> --- a/drivers/mfd/axp20x.c
> +++ b/drivers/mfd/axp20x.c
> @@ -128,6 +128,12 @@ static struct resource axp152_pek_resources[] = {
> DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
> };
>
> +static 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"),
> + DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_OVER_V, "ACIN_OVER_V"),
> +};
> +
> static struct resource axp20x_pek_resources[] = {
> {
> .name = "PEK_DBR",
> @@ -436,6 +442,11 @@ static struct mfd_cell axp20x_cells[] = {
> }, {
> .name = "axp20x-regulator",
> }, {
> + .name = "axp20x-ac-power-supply",
> + .of_compatible = "x-powers,axp202-ac-power-supply",
> + .num_resources = ARRAY_SIZE(axp20x_ac_power_supply_resources),
> + .resources = axp20x_ac_power_supply_resources,
> + }, {
> .name = "axp20x-usb-power-supply",
> .of_compatible = "x-powers,axp202-usb-power-supply",
> .num_resources = ARRAY_SIZE(axp20x_usb_power_supply_resources),
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v4 1/4] power: Add an axp20x-ac-power driver
2016-05-06 5:19 ` [PATCH v4 1/4] power: Add an axp20x-ac-power driver Michael Haas
@ 2016-05-09 16:33 ` Chen-Yu Tsai
2016-05-14 7:31 ` Michael Haas
0 siblings, 1 reply; 8+ messages in thread
From: Chen-Yu Tsai @ 2016-05-09 16:33 UTC (permalink / raw)
To: Michael Haas
Cc: Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
Maxime Ripard, Chen-Yu Tsai, Lee Jones, Sebastian Reichel,
Dmitry Eremin-Solenikov, David Woodhouse, Hans De Goede,
Bruno Prémont, devicetree, linux-pm,
Russell King - ARM Linux, linux-sunxi
On Fri, May 6, 2016 at 1:19 PM, Michael Haas <haas@computerlinguist.org> wrote:
> This adds a driver for the ac power_supply bits of the axp20x
> PMICs.
>
> This submission is taken directly from Bruno Prémonts 2015 RFC [0].
> The original RFC contains drivers for AC, battery and backup
> battery. This commit only adds the AC driver for now.
>
> [0] http://permalink.gmane.org/gmane.comp.hardware.netbook.arm.sunxi/17980
>
> Signed-off-by: Michael Haas <haas@computerlinguist.org>
> ---
> drivers/power/Makefile | 2 +-
> drivers/power/axp20x_ac_power.c | 181 ++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 182 insertions(+), 1 deletion(-)
> create mode 100644 drivers/power/axp20x_ac_power.c
>
> diff --git a/drivers/power/Makefile b/drivers/power/Makefile
> index e46b75d..3a785cc 100644
> --- a/drivers/power/Makefile
> +++ b/drivers/power/Makefile
> @@ -9,7 +9,7 @@ obj-$(CONFIG_GENERIC_ADC_BATTERY) += generic-adc-battery.o
>
> obj-$(CONFIG_PDA_POWER) += pda_power.o
> obj-$(CONFIG_APM_POWER) += apm_power.o
> -obj-$(CONFIG_AXP20X_POWER) += axp20x_usb_power.o
> +obj-$(CONFIG_AXP20X_POWER) += axp20x_usb_power.o axp20x_ac_power.o
Sort the file names please.
> obj-$(CONFIG_MAX8925_POWER) += max8925_power.o
> obj-$(CONFIG_WM831X_BACKUP) += wm831x_backup.o
> obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
> diff --git a/drivers/power/axp20x_ac_power.c b/drivers/power/axp20x_ac_power.c
> new file mode 100644
> index 0000000..0d1ca0e
> --- /dev/null
> +++ b/drivers/power/axp20x_ac_power.c
> @@ -0,0 +1,181 @@
> +/*
> + * AXP20x PMIC AC power driver
> + *
> + * Copyright 2014-2015 Bruno Prémont <bonbons@linux-vserver.org>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/err.h>
> +#include <linux/interrupt.h>
> +#include <linux/irq.h>
> +#include <linux/mfd/axp20x.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/power_supply.h>
> +#include <linux/regmap.h>
> +#include <linux/slab.h>
> +
> +#define DRVNAME "axp20x-ac-power"
> +
> +
> +/* Fields of AXP20X_PWR_INPUT_STATUS */
> +#define AXP20X_PWR_STATUS_AC_PRESENT BIT(7)
> +#define AXP20X_PWR_STATUS_AC_AVAILABLE BIT(6)
> +#define AXP20X_PWR_STATUS_AC_VBUS_SHORT BIT(1)
> +#define AXP20X_PWR_STATUS_AC_VBUS_SEL BIT(0)
These 2 aren't used anymore. Please remove them.
> +
> +/* Fields of AXP20X_ADC_EN1 */
> +#define AXP20X_ADC_EN1_ACIN_VOLT BIT(5)
> +#define AXP20X_ADC_EN1_ACIN_CURR BIT(4)
> +
> +
> +struct axp20x_ac_power {
> + struct regmap *regmap;
> + struct power_supply *supply;
> +};
> +
> +static int axp20x_ac_power_get_property(struct power_supply *psy,
> + enum power_supply_property psp,
> + union power_supply_propval *val)
> +{
> + struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
> + unsigned int input;
> + int r;
> +
> + switch (psp) {
> + case POWER_SUPPLY_PROP_VOLTAGE_NOW:
> + r = axp20x_read_variable_width(power->regmap,
> + AXP20X_ACIN_V_ADC_H, 12);
> + if (r < 0)
> + return r;
> +
> + val->intval = r * 1700; /* 1 step = 1.7 mV */
> + return 0;
> + case POWER_SUPPLY_PROP_CURRENT_NOW:
> + r = axp20x_read_variable_width(power->regmap,
> + AXP20X_ACIN_I_ADC_H, 12);
> + if (r < 0)
> + return r;
> +
> + val->intval = r * 375; /* 1 step = 0.375 mA */
The step for ACIN is 0.625 mA. 0.375 is for VBUS.
> + return 0;
> + default:
> + break;
> + }
> +
> + /* All the properties below need the input-status reg value */
> + r = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &input);
> + if (r)
> + return r;
> +
> + switch (psp) {
> + case POWER_SUPPLY_PROP_PRESENT:
> + val->intval = !!(input & AXP20X_PWR_STATUS_AC_PRESENT);
> + break;
> + case POWER_SUPPLY_PROP_ONLINE:
> + val->intval = !!(input & AXP20X_PWR_STATUS_AC_AVAILABLE);
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static enum power_supply_property axp20x_ac_power_properties[] = {
> + POWER_SUPPLY_PROP_PRESENT,
> + POWER_SUPPLY_PROP_ONLINE,
> + POWER_SUPPLY_PROP_VOLTAGE_NOW,
> + POWER_SUPPLY_PROP_CURRENT_NOW,
> +};
> +
> +static const struct power_supply_desc axp20x_ac_power_desc = {
> + .name = "axp20x-ac",
> + .type = POWER_SUPPLY_TYPE_MAINS,
> + .properties = axp20x_ac_power_properties,
> + .num_properties = ARRAY_SIZE(axp20x_ac_power_properties),
> + .get_property = axp20x_ac_power_get_property,
> +};
> +
> +static irqreturn_t axp20x_irq_ac_handler(int irq, void *devid)
> +{
> + struct axp20x_ac_power *power = devid;
> +
> + power_supply_changed(power->supply);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int axp20x_ac_power_probe(struct platform_device *pdev)
> +{
> + struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
> + struct power_supply_config psy_cfg = {};
> + struct axp20x_ac_power *power;
> + static const char * const irq_names[] = { "ACIN_PLUGIN",
> + "ACIN_REMOVAL", "ACIN_OVER_V" };
> + int i, irq, r;
> +
> + power = devm_kzalloc(&pdev->dev, sizeof(*power), GFP_KERNEL);
> + if (!power)
> + return -ENOMEM;
> +
> + power->regmap = axp20x->regmap;
> +
> + /* Enable ac voltage and current measurement */
> + r = regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
> + AXP20X_ADC_EN1_ACIN_CURR | AXP20X_ADC_EN1_ACIN_VOLT,
> + AXP20X_ADC_EN1_ACIN_CURR | AXP20X_ADC_EN1_ACIN_VOLT);
> + if (r)
> + return r;
> +
> + psy_cfg.of_node = pdev->dev.of_node;
> + psy_cfg.drv_data = power;
> +
> + power->supply = devm_power_supply_register(&pdev->dev,
> + &axp20x_ac_power_desc, &psy_cfg);
> + if (IS_ERR(power->supply))
> + return PTR_ERR(power->supply);
> +
> + /* Request irqs after registering, as irqs may trigger immediately */
> + for (i = 0; i < ARRAY_SIZE(irq_names); i++) {
> + irq = platform_get_irq_byname(pdev, irq_names[i]);
> + if (irq < 0) {
> + dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
> + irq_names[i], irq);
> + continue;
> + }
> + irq = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
> + r = devm_request_any_context_irq(&pdev->dev, irq,
> + axp20x_irq_ac_handler, 0, DRVNAME, power);
> + if (r < 0)
> + dev_warn(&pdev->dev, "Error requesting %s IRQ: %d\n",
> + irq_names[i], r);
Won't missing IRQs hinder the usage of this driver / hardware?
A power supply isn't much use if the system isn't told when
it's gone.
Regards
ChenYu
> + }
> +
> + return 0;
> +}
> +
> +static const struct of_device_id axp20x_ac_power_match[] = {
> + { .compatible = "x-powers,axp202-ac-power-supply" },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, axp20x_ac_power_match);
> +
> +static struct platform_driver axp20x_ac_power_driver = {
> + .probe = axp20x_ac_power_probe,
> + .driver = {
> + .name = DRVNAME,
> + .of_match_table = axp20x_ac_power_match,
> + },
> +};
> +
> +module_platform_driver(axp20x_ac_power_driver);
> +
> +MODULE_AUTHOR("Bruno Prémont <bonbons@linux-vserver.org>");
> +MODULE_DESCRIPTION("AXP20x PMIC AC power supply status driver");
> +MODULE_LICENSE("GPL");
> --
> 2.8.2
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v4 1/4] power: Add an axp20x-ac-power driver
2016-05-09 16:33 ` Chen-Yu Tsai
@ 2016-05-14 7:31 ` Michael Haas
0 siblings, 0 replies; 8+ messages in thread
From: Michael Haas @ 2016-05-14 7:31 UTC (permalink / raw)
To: Chen-Yu Tsai
Cc: Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
Maxime Ripard, Lee Jones, Sebastian Reichel,
Dmitry Eremin-Solenikov, David Woodhouse, Hans De Goede,
Bruno Prémont, devicetree, linux-pm,
Russell King - ARM Linux, linux-sunxi
On 05/09/2016 06:33 PM, Chen-Yu Tsai wrote:
>> +
>> + power->supply = devm_power_supply_register(&pdev->dev,
>> + &axp20x_ac_power_desc, &psy_cfg);
>> + if (IS_ERR(power->supply))
>> + return PTR_ERR(power->supply);
>> +
>> + /* Request irqs after registering, as irqs may trigger immediately */
>> + for (i = 0; i < ARRAY_SIZE(irq_names); i++) {
>> + irq = platform_get_irq_byname(pdev, irq_names[i]);
>> + if (irq < 0) {
>> + dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
>> + irq_names[i], irq);
>> + continue;
>> + }
>> + irq = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
>> + r = devm_request_any_context_irq(&pdev->dev, irq,
>> + axp20x_irq_ac_handler, 0, DRVNAME, power);
>> + if (r < 0)
>> + dev_warn(&pdev->dev, "Error requesting %s IRQ: %d\n",
>> + irq_names[i], r);
>
> Won't missing IRQs hinder the usage of this driver / hardware?
> A power supply isn't much use if the system isn't told when
> it's gone.
>
That's a good point. The real question is: how would you handle missing
IRQs? I have looked at other uses of devm_request_any_context_irq, e.g.
in rtc-pm8xxx.c [0]. These other users often return an error code in the
probe function. That doesn't help the system, though: it still won't
notice if the power is unplugged in addition to missing the driver
completely.
It's probably best to provide the remaining (functional) parts of the
driver (reading from /sys/class..) even if the IRQs cannot be
registered. The code is pretty much the same in the axp20x-usb-power.
Michael
[0] http://lxr.free-electrons.com/source/drivers/rtc/rtc-pm8xxx.c#L490
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2016-05-14 7:31 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-05-06 5:19 [PATCH v4 0/4] Michael Haas
[not found] ` <1462511991-1911-1-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
2016-05-06 5:19 ` [PATCH v4 1/4] power: Add an axp20x-ac-power driver Michael Haas
2016-05-09 16:33 ` Chen-Yu Tsai
2016-05-14 7:31 ` Michael Haas
2016-05-06 5:19 ` [PATCH v4 2/4] mfd: axp20x: Add a cell for the ac power_supply part of the axp20x PMICs Michael Haas
[not found] ` <1462511991-1911-3-git-send-email-haas-bdq14YP6qtSV9CzYT+GlPGD2FQJk+8+b@public.gmane.org>
2016-05-09 8:06 ` Lee Jones
2016-05-06 5:19 ` [PATCH v4 3/4] ARM: dts: Add binding documentation for AXP20x pmic ac power supply Michael Haas
2016-05-06 5:19 ` [PATCH v4 4/4] ARM: dts: axp209: Add ac_power_supply child node to the ax209 node Michael Haas
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