[PATCH v3 0/4] fixes for latest bq27xxx driver and OpenPandora DT nodes

[PATCH v3 0/4] fixes for latest bq27xxx driver and OpenPandora DT nodes

[H. Nikolaus Schaller]

Latest bq27xxx drivers allow to write RAM/NVRAM parameters
of the fuel gauge chip from values defined in board specific
device tree.

This allows to specify the battery properties of a standard
battery.

This patch set enables this for two chips where I have tested
it on real devices:

bq27421: Pyra handheld prototype
bq27500: OpenPandora 600 Mhz standard device

Since the Pyra DT is not yet mainlined, there are only DT
patches for the OpenPandora.

H. Nikolaus Schaller (4):
  power: supply: bq27xxx: enable writing capacity values for bq27421
  power: supply: bq27xxx: enable writing capacity values for bq27500
  DT: OpenPandora: add battery node to describe OpenPandora battery
  DT: OpenPandora: fix for configuration of bq27500 fuel gauge

 arch/arm/boot/dts/omap3-pandora-common.dtsi | 11 ++++++++++-
 drivers/power/supply/bq27xxx_battery.c      |  8 --------
 2 files changed, 10 insertions(+), 9 deletions(-)

-- 
2.12.2

[PATCH v3 0/4] fixes for latest bq27xxx driver and OpenPandora DT nodes

[H. Nikolaus Schaller]

Latest bq27xxx drivers allow to write RAM/NVRAM parameters
of the fuel gauge chip from values defined in board specific
device tree.

This allows to specify the battery properties of a standard
battery.

This patch set enables this for two chips where I have tested
it on real devices:

bq27421: Pyra handheld prototype
bq27500: OpenPandora 600 Mhz standard device

Since the Pyra DT is not yet mainlined, there are only DT
patches for the OpenPandora.

H. Nikolaus Schaller (4):
  power: supply: bq27xxx: enable writing capacity values for bq27421
  power: supply: bq27xxx: enable writing capacity values for bq27500
  DT: OpenPandora: add battery node to describe OpenPandora battery
  DT: OpenPandora: fix for configuration of bq27500 fuel gauge

 arch/arm/boot/dts/omap3-pandora-common.dtsi | 11 ++++++++++-
 drivers/power/supply/bq27xxx_battery.c      |  8 --------
 2 files changed, 10 insertions(+), 9 deletions(-)

-- 
2.12.2

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[PATCH v3 1/4] power: supply: bq27xxx: enable writing capacity values for bq27421

[H. Nikolaus Schaller]

Tested on Pyra prototype with bq27421.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/power/supply/bq27xxx_battery.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index ad876a3abe01..e80571cf7be1 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -688,15 +688,11 @@ static struct bq27xxx_dm_reg bq27545_dm_regs[] = {
 #define bq27545_dm_regs 0
 #endif
 
-#if 0 /* not yet tested */
 static struct bq27xxx_dm_reg bq27421_dm_regs[] = {
 	[BQ27XXX_DM_DESIGN_CAPACITY]   = { 82, 10, 2,    0,  8000 },
 	[BQ27XXX_DM_DESIGN_ENERGY]     = { 82, 12, 2,    0, 32767 },
 	[BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2500,  3700 },
 };
-#else
-#define bq27421_dm_regs 0
-#endif
 
 static struct bq27xxx_dm_reg bq27425_dm_regs[] = {
 	[BQ27XXX_DM_DESIGN_CAPACITY]   = { 82, 12, 2,    0, 32767 },
-- 
2.12.2

[PATCH v3 2/4] power: supply: bq27xxx: enable writing capacity values for bq27500

[H. Nikolaus Schaller]

Tested on OpenPandora with bq27500.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/power/supply/bq27xxx_battery.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index e80571cf7be1..5562f998330f 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -653,15 +653,11 @@ enum bq27xxx_dm_reg_id {
 #define bq2751x_dm_regs 0
 #define bq2752x_dm_regs 0
 
-#if 0 /* not yet tested */
 static struct bq27xxx_dm_reg bq27500_dm_regs[] = {
 	[BQ27XXX_DM_DESIGN_CAPACITY]   = { 48, 10, 2,    0, 65535 },
 	[BQ27XXX_DM_DESIGN_ENERGY]     = { }, /* missing on chip */
 	[BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 },
 };
-#else
-#define bq27500_dm_regs 0
-#endif
 
 /* todo create data memory definitions from datasheets and test on chips */
 #define bq27510g1_dm_regs 0
-- 
2.12.2

[PATCH v3 3/4] DT: OpenPandora: add battery node to describe OpenPandora battery

[H. Nikolaus Schaller]

Add DT node to describe the standard OpenPandora battery PB-4000-001
so that its properties can be used by the fuel gauge driver.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/arm/boot/dts/omap3-pandora-common.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi b/arch/arm/boot/dts/omap3-pandora-common.dtsi
index 582e1fe25602..154865289dba 100644
--- a/arch/arm/boot/dts/omap3-pandora-common.dtsi
+++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi
@@ -273,6 +273,14 @@
 		enable-active-high;
 		gpio = <&twl_gpio 13 GPIO_ACTIVE_HIGH>;
 	};
+
+	/* standard OpenPandora battery (PB-4000-001) */
+	bat: battery {
+		compatible = "simple-battery", "openpandora-battery";
+		voltage-min-design-microvolt = <3200000>;
+		energy-full-design-microwatt-hours = <14800000>;
+		charge-full-design-microamp-hours = <4000000>;
+	};
 };
 
 &omap3_pmx_core {
-- 
2.12.2

[PATCH v3 4/4] DT: OpenPandora: fix for configuration of bq27500 fuel gauge

[H. Nikolaus Schaller]

Using the latest driver features requires to use "ti,bq27500-1"
instead of "ti,bq27500" as the compatible property.

Also add a reference to the monitored-battery.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/arm/boot/dts/omap3-pandora-common.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi b/arch/arm/boot/dts/omap3-pandora-common.dtsi
index 154865289dba..bdf082246f9b 100644
--- a/arch/arm/boot/dts/omap3-pandora-common.dtsi
+++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi
@@ -545,8 +545,9 @@
 	clock-frequency = <100000>;
 
 	bq27500@55 {
-		compatible = "ti,bq27500";
+		compatible = "ti,bq27500-1";
 		reg = <0x55>;
+		monitored-battery = <&bat>;
 	};
 
 };
-- 
2.12.2

[PATCH v3 3/4] DT: OpenPandora: add battery node to describe OpenPandora battery

[H. Nikolaus Schaller]

Add DT node to describe the standard OpenPandora battery PB-4000-001
so that its properties can be used by the fuel gauge driver.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/arm/boot/dts/omap3-pandora-common.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi b/arch/arm/boot/dts/omap3-pandora-common.dtsi
index 582e1fe25602..154865289dba 100644
--- a/arch/arm/boot/dts/omap3-pandora-common.dtsi
+++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi
@@ -273,6 +273,14 @@
 		enable-active-high;
 		gpio = <&twl_gpio 13 GPIO_ACTIVE_HIGH>;
 	};
+
+	/* standard OpenPandora battery (PB-4000-001) */
+	bat: battery {
+		compatible = "simple-battery", "openpandora-battery";
+		voltage-min-design-microvolt = <3200000>;
+		energy-full-design-microwatt-hours = <14800000>;
+		charge-full-design-microamp-hours = <4000000>;
+	};
 };
 
 &omap3_pmx_core {
-- 
2.12.2