[PATCH v7 1/2] power: act8945a: add charger driver for ACT8945A

2016-01-21 Thread Wenyou Yang 
This patch adds new driver for Active-semi ACT8945A ActivePath
charger (part of ACT8945A MFD driver) providing power supply class
information to userspace.

The driver can be configured through DT (such as, total timer,
precondition timer and input over-voltage threshold).

Signed-off-by: Wenyou Yang 
---

Changes in v7:
 - use the helper dev_get_regmap(pdev->dev.parent, NULL) to get regmap.
 - remove *act8945a_dev member from struct act8945a_charger.
 - remove *psy member from struct act8945a_charger.
 - merge _parse_dt() and _charger_config() functions, remove relevent
   members from struct act8945a_charger.
 - remove unused platform_set_drvdata(pdev, charger) statement.

Changes in v6:
 - change the type value to unsigned int.

Changes in v5:
 - remove spare spaces after #define.
 - add OF match table.

Changes in v4:
 - use spaces after #define, not tabs.
 - use BIT(n) macros to substitute (0x01 << x).
 - change dt properties with more legible name.

Changes in v3:
 - update the file header with short version license and author line.
 - remove unused member of struct act8945a_charger, dev.
 - action due to removing the member of stuct act8945a_dev, dev.
 - remove the unnecessary print out.
 - remove the unnecessary act8945a_charger_remove().
 - fix align of the code-style.

Changes in v2:
 1./ Substitute of_property_read_bool() for of_get_property().
 2./ Substitute devm_power_supply_register() for power_supply_register().
 3./ Use module_platform_driver(), instead of subsys_initcall().
 4./ Substitute MODULE_LICENSE("GPL") for MODULE_LICENSE("GPL v2").

 drivers/power/Kconfig|7 +
 drivers/power/Makefile   |1 +
 drivers/power/act8945a_charger.c |  362 ++
 3 files changed, 370 insertions(+)
 create mode 100644 drivers/power/act8945a_charger.c

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 1ddd13c..ae75211 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -75,6 +75,13 @@ config BATTERY_88PM860X
help
  Say Y here to enable battery monitor for Marvell 88PM860x chip.
 
+config BATTERY_ACT8945A
+   tristate "Active-semi ACT8945A charger driver"
+   depends on MFD_ACT8945A
+   help
+ Say Y here to enable support for power supply provided by
+ Active-semi ActivePath ACT8945A charger.
+
 config BATTERY_DS2760
tristate "DS2760 battery driver (HP iPAQ & others)"
depends on W1 && W1_SLAVE_DS2760
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 0e4eab5..e46b75d 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_WM8350_POWER)+= wm8350_power.o
 obj-$(CONFIG_TEST_POWER)   += test_power.o
 
 obj-$(CONFIG_BATTERY_88PM860X) += 88pm860x_battery.o
+obj-$(CONFIG_BATTERY_ACT8945A) += act8945a_charger.o
 obj-$(CONFIG_BATTERY_DS2760)   += ds2760_battery.o
 obj-$(CONFIG_BATTERY_DS2780)   += ds2780_battery.o
 obj-$(CONFIG_BATTERY_DS2781)   += ds2781_battery.o
diff --git a/drivers/power/act8945a_charger.c b/drivers/power/act8945a_charger.c
new file mode 100644
index 000..930614e
--- /dev/null
+++ b/drivers/power/act8945a_charger.c
@@ -0,0 +1,362 @@
+/*
+ * Power supply driver for the Active-semi ACT8945A PMIC
+ *
+ * Copyright (C) 2015 Atmel Corporation
+ *
+ * Author: Wenyou Yang 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+static const char *act8945a_charger_model = "ACT8945A";
+static const char *act8945a_charger_manufacturer = "Active-semi";
+
+/**
+ * ACT8945A Charger Register Map
+ */
+
+/* 0x70: Reserved */
+#define ACT8945A_APCH_CFG  0x71
+#define ACT8945A_APCH_STATUS   0x78
+#define ACT8945A_APCH_CTRL 0x79
+#define ACT8945A_APCH_STATE0x7A
+
+/* ACT8945A_APCH_CFG */
+#define APCH_CFG_OVPSET(0x3 << 0)
+#define APCH_CFG_OVPSET_6V6(0x0 << 0)
+#define APCH_CFG_OVPSET_7V (0x1 << 0)
+#define APCH_CFG_OVPSET_7V5(0x2 << 0)
+#define APCH_CFG_OVPSET_8V (0x3 << 0)
+#define APCH_CFG_PRETIMO   (0x3 << 2)
+#define APCH_CFG_PRETIMO_40_MIN(0x0 << 2)
+#define APCH_CFG_PRETIMO_60_MIN(0x1 << 2)
+#define APCH_CFG_PRETIMO_80_MIN(0x2 << 2)
+#define APCH_CFG_PRETIMO_DISABLED  (0x3 << 2)
+#define APCH_CFG_TOTTIMO   (0x3 << 4)
+#define APCH_CFG_TOTTIMO_3_HOUR(0x0 << 4)
+#define APCH_CFG_TOTTIMO_4_HOUR(0x1 << 4)
+#define APCH_CFG_TOTTIMO_5_HOUR(0x2 << 4)
+#define APCH_CFG_TOTTIMO_DISABLED  (0x3 << 4)
+#define APCH_CFG_SUSCHG(0x1 << 7)
+
+#define APCH_STATUS_CHGDAT BIT(0)
+#define APCH_STATUS_INDAT  BIT(1)

[PATCH v7 1/2] power: act8945a: add charger driver for ACT8945A

2016-01-21 Thread Wenyou Yang 
This patch adds new driver for Active-semi ACT8945A ActivePath
charger (part of ACT8945A MFD driver) providing power supply class
information to userspace.

The driver can be configured through DT (such as, total timer,
precondition timer and input over-voltage threshold).

Signed-off-by: Wenyou Yang 
---

Changes in v7:
 - use the helper dev_get_regmap(pdev->dev.parent, NULL) to get regmap.
 - remove *act8945a_dev member from struct act8945a_charger.
 - remove *psy member from struct act8945a_charger.
 - merge _parse_dt() and _charger_config() functions, remove relevent
   members from struct act8945a_charger.
 - remove unused platform_set_drvdata(pdev, charger) statement.

Changes in v6:
 - change the type value to unsigned int.

Changes in v5:
 - remove spare spaces after #define.
 - add OF match table.

Changes in v4:
 - use spaces after #define, not tabs.
 - use BIT(n) macros to substitute (0x01 << x).
 - change dt properties with more legible name.

Changes in v3:
 - update the file header with short version license and author line.
 - remove unused member of struct act8945a_charger, dev.
 - action due to removing the member of stuct act8945a_dev, dev.
 - remove the unnecessary print out.
 - remove the unnecessary act8945a_charger_remove().
 - fix align of the code-style.

Changes in v2:
 1./ Substitute of_property_read_bool() for of_get_property().
 2./ Substitute devm_power_supply_register() for power_supply_register().
 3./ Use module_platform_driver(), instead of subsys_initcall().
 4./ Substitute MODULE_LICENSE("GPL") for MODULE_LICENSE("GPL v2").

 drivers/power/Kconfig|7 +
 drivers/power/Makefile   |1 +
 drivers/power/act8945a_charger.c |  362 ++
 3 files changed, 370 insertions(+)
 create mode 100644 drivers/power/act8945a_charger.c

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 1ddd13c..ae75211 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -75,6 +75,13 @@ config BATTERY_88PM860X
help
  Say Y here to enable battery monitor for Marvell 88PM860x chip.
 
+config BATTERY_ACT8945A
+   tristate "Active-semi ACT8945A charger driver"
+   depends on MFD_ACT8945A
+   help
+ Say Y here to enable support for power supply provided by
+ Active-semi ActivePath ACT8945A charger.
+
 config BATTERY_DS2760
tristate "DS2760 battery driver (HP iPAQ & others)"
depends on W1 && W1_SLAVE_DS2760
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 0e4eab5..e46b75d 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_WM8350_POWER)+= wm8350_power.o
 obj-$(CONFIG_TEST_POWER)   += test_power.o
 
 obj-$(CONFIG_BATTERY_88PM860X) += 88pm860x_battery.o
+obj-$(CONFIG_BATTERY_ACT8945A) += act8945a_charger.o
 obj-$(CONFIG_BATTERY_DS2760)   += ds2760_battery.o
 obj-$(CONFIG_BATTERY_DS2780)   += ds2780_battery.o
 obj-$(CONFIG_BATTERY_DS2781)   += ds2781_battery.o
diff --git a/drivers/power/act8945a_charger.c b/drivers/power/act8945a_charger.c
new file mode 100644
index 000..930614e
--- /dev/null
+++ b/drivers/power/act8945a_charger.c
@@ -0,0 +1,362 @@
+/*
+ * Power supply driver for the Active-semi ACT8945A PMIC
+ *
+ * Copyright (C) 2015 Atmel Corporation
+ *
+ * Author: Wenyou Yang 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+static const char *act8945a_charger_model = "ACT8945A";
+static const char *act8945a_charger_manufacturer = "Active-semi";
+
+/**
+ * ACT8945A Charger Register Map
+ */
+
+/* 0x70: Reserved */
+#define ACT8945A_APCH_CFG  0x71
+#define ACT8945A_APCH_STATUS   0x78
+#define ACT8945A_APCH_CTRL 0x79
+#define ACT8945A_APCH_STATE0x7A
+
+/* ACT8945A_APCH_CFG */
+#define APCH_CFG_OVPSET(0x3 << 0)
+#define APCH_CFG_OVPSET_6V6(0x0 << 0)
+#define APCH_CFG_OVPSET_7V (0x1 << 0)
+#define APCH_CFG_OVPSET_7V5(0x2 << 0)
+#define APCH_CFG_OVPSET_8V (0x3 << 0)
+#define APCH_CFG_PRETIMO   (0x3 << 2)
+#define APCH_CFG_PRETIMO_40_MIN(0x0 << 2)
+#define APCH_CFG_PRETIMO_60_MIN(0x1 << 2)
+#define APCH_CFG_PRETIMO_80_MIN(0x2 << 2)
+#define APCH_CFG_PRETIMO_DISABLED  (0x3 << 2)
+#define APCH_CFG_TOTTIMO   (0x3 << 4)
+#define APCH_CFG_TOTTIMO_3_HOUR(0x0 << 4)
+#define APCH_CFG_TOTTIMO_4_HOUR(0x1 << 4)
+#define APCH_CFG_TOTTIMO_5_HOUR(0x2 << 4)
+#define APCH_CFG_TOTTIMO_DISABLED  (0x3 << 4)
+#define APCH_CFG_SUSCHG(0x1 << 7)
+
+#define APCH_STATUS_CHGDAT BIT(0)