From: "Rajanikanth H.V" <rajanikanth...@stericsson.com>
This patch adds device tree support for
battery-temperature-monitor-driver
Signed-off-by: Rajanikanth H.V <rajanikanth...@stericsson.com>
---
Documentation/devicetree/bindings/mfd/ab8500.txt | 7 ++-
.../bindings/power_supply/ab8500/btemp.txt | 29 +++++++++++
arch/arm/boot/dts/dbx5x0.dtsi | 7 +++
drivers/mfd/ab8500-core.c | 1 +
drivers/power/Kconfig | 6 ---
drivers/power/ab8500_bmdata.c | 4 +-
drivers/power/ab8500_btemp.c | 53 +++++++++++++++-----
7 files changed, 86 insertions(+), 21 deletions(-)
create mode 100644
Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt
diff --git a/Documentation/devicetree/bindings/mfd/ab8500.txt
b/Documentation/devicetree/bindings/mfd/ab8500.txt
index 762dc11..47d232e 100644
--- a/Documentation/devicetree/bindings/mfd/ab8500.txt
+++ b/Documentation/devicetree/bindings/mfd/ab8500.txt
@@ -30,7 +30,12 @@ ab8500-fg : : vddadc
: Fuel Gauge
: LOW_BAT_F : : LOW threshold
battery voltage
: CC_INT_CALIB : : Counter
Counter Internal Calibration
: CCEOC : : Coulomb
Counter End of Conversion
- : : :
+ab8500-btemp : : vtvout : Battery
Temperature
+ : BAT_CTRL_INDB : : Battery
Removal Indicator
+ : BTEMP_LOW : : Btemp <
BtempLow, if battery temperature is lower than -10°C
+ : BTEMP_HIGH : : BtempLow <
Btemp < BtempMedium,if battery temperature is between -10 and 0°C
+ : BTEMP_LOW_MEDIUM : : BtempMedium <
Btemp < BtempHigh,if battery temperature is between 0°C and“MaxTemp
+ : BTEMP_MEDIUM_HIGH : : Btemp >
BtempHigh, if battery temperature is higher than “MaxTemp”
ab8500-gpadc : HW_CONV_END : vddadc : Analogue to
Digital Converter
SW_CONV_END : :
ab8500-gpio : : : GPIO
Controller
diff --git a/Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt
b/Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt
new file mode 100644
index 0000000..f58c697
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/ab8500/btemp.txt
@@ -0,0 +1,29 @@
+=== AB8500 Battery Temperature Monitor Driver ===
+
+Battery temperature monitoring support is part of energy-
+management-module, the other components of this module
+are: main-charger, usb-combo-charger and fuel-gauge.
+
+The properties below describes the node for battery
+temperature monitor driver.
+
+Required Properties:
+- compatible = "stericsson,ab8500-btemp"
+- interface-name:
+ Name of the controller/driver which is part of energy-management-module
+- supplied-to:
+ This property shall have dependent nodes which represent other
+ energy-management-module.
+ example:
+ ab8500-btemp {
+ /* dependent energy management modules */
+ supplied-to = <&ab8500_chargalg &ab8500_fuel_gauge>;
+ };
+Other dependent node for battery temperature is:
+ ab8500_battery_info: ab8500_bat_type {
+ };
+ This node will provide information on 'thermistor interface' and
+ 'battery technology type' used.
+
+ref: further details.
+ Documentation/devicetree/bindings/power_supply/ab8500/fg.txt
diff --git a/arch/arm/boot/dts/dbx5x0.dtsi b/arch/arm/boot/dts/dbx5x0.dtsi
index bd22c56..9f5fde8 100644
--- a/arch/arm/boot/dts/dbx5x0.dtsi
+++ b/arch/arm/boot/dts/dbx5x0.dtsi
@@ -371,6 +371,13 @@
supplied-to = <&ab8500_chargalg
&ab8500_usb>;
};
+ ab8500_battery_temp: ab8500_btemp {
+ compatible =
"stericsson,ab8500-btemp";
+ interface-name = "ab8500_btemp";
+ battery-info = <&ab8500_battery_info>;
+ supplied-to = <&ab8500_chargalg
&ab8500_fuel_gauge>;
+ };
+
ab8500_usb: ab8500_usb_if {
compatible = "stericsson,ab8500-usb";
interface-name = "ab8500_usb";
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index 6c3d7c2..0173417 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -1046,6 +1046,7 @@ static struct mfd_cell __devinitdata ab8500_bm_devs[] = {
},
{
.name = "ab8500-btemp",
+ .of_compatible = "stericsson,ab8500-btemp",
.num_resources = ARRAY_SIZE(ab8500_btemp_resources),
.resources = ab8500_btemp_resources,
},
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index c1892f3..1434871 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -304,12 +304,6 @@ config AB8500_BM
help
Say Y to include support for AB8500 battery management.
-config AB8500_BATTERY_THERM_ON_BATCTRL
- bool "Thermistor connected on BATCTRL ADC"
- depends on AB8500_BM
- help
- Say Y to enable battery temperature measurements using
- thermistor connected on BATCTRL ADC.
endif # POWER_SUPPLY
source "drivers/power/avs/Kconfig"
diff --git a/drivers/power/ab8500_bmdata.c b/drivers/power/ab8500_bmdata.c
index d0def3b..90d0e51 100644
--- a/drivers/power/ab8500_bmdata.c
+++ b/drivers/power/ab8500_bmdata.c
@@ -29,7 +29,7 @@ static struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
{65, 12500},
};
static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
- {-5, 165418},
+ {-5, 200000},
{ 0, 159024},
{ 5, 151921},
{10, 144300},
@@ -237,7 +237,7 @@ struct abx500_battery_type bat_type_thermistor[] = {
},
{
.name = POWER_SUPPLY_TECHNOLOGY_LIPO,
- .resis_high = 165418,
+ .resis_high = 200000,
.resis_low = 82869,
.battery_resistance = 300,
.charge_full_design = 900,
diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c
index 8e427e7..c4291e0 100644
--- a/drivers/power/ab8500_btemp.c
+++ b/drivers/power/ab8500_btemp.c
@@ -20,6 +20,7 @@
#include <linux/power_supply.h>
#include <linux/completion.h>
#include <linux/workqueue.h>
+#include <linux/of.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
@@ -955,7 +956,6 @@ static int __devexit ab8500_btemp_remove(struct
platform_device *pdev)
flush_scheduled_work();
power_supply_unregister(&di->btemp_psy);
platform_set_drvdata(pdev, NULL);
- kfree(di);
return 0;
}
@@ -965,17 +965,44 @@ static int __devinit ab8500_btemp_probe(struct
platform_device *pdev)
int irq, i, ret = 0;
u8 val;
struct abx500_bm_plat_data *plat_data = pdev->dev.platform_data;
+ struct device_node *np = pdev->dev.of_node;
struct ab8500_btemp *di;
+ di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
+ if (!di) {
+ dev_err(&pdev->dev, "%s no mem for ab8500_btemp\n", __func__);
+ return -ENOMEM;
+ }
+ if (np) {
+ if (!plat_data) {
+ plat_data =
+ devm_kzalloc(&pdev->dev, sizeof(*plat_data),
+ GFP_KERNEL);
+ if (!plat_data) {
+ dev_err(&pdev->dev,
+ "%s no mem for plat_data\n", __func__);
+ return -ENOMEM;
+ }
+ plat_data->bmdev_pdata = devm_kzalloc(&pdev->dev,
+ sizeof(*plat_data->bmdev_pdata), GFP_KERNEL);
+ if (!plat_data->bmdev_pdata) {
+ dev_err(&pdev->dev,
+ "%s no mem for pdata->btemp\n",
+ __func__);
+ return -ENOMEM;
+ }
+ }
+ ret = bmdevs_of_probe(&pdev->dev, np, plat_data);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to get platform data\n");
+ return ret;
+ }
+ }
if (!plat_data) {
dev_err(&pdev->dev, "No platform data\n");
return -EINVAL;
}
- di = kzalloc(sizeof(*di), GFP_KERNEL);
- if (!di)
- return -ENOMEM;
-
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
@@ -985,16 +1012,14 @@ static int __devinit ab8500_btemp_probe(struct
platform_device *pdev)
di->pdata = plat_data->bmdev_pdata;
if (!di->pdata) {
dev_err(di->dev, "no btemp platform data supplied\n");
- ret = -EINVAL;
- goto free_device_info;
+ return -EINVAL;
}
/* get battery specific platform data */
di->bat = plat_data->battery;
if (!di->bat) {
dev_err(di->dev, "no battery platform data supplied\n");
- ret = -EINVAL;
- goto free_device_info;
+ return -EINVAL;
}
/* BTEMP supply */
@@ -1014,7 +1039,7 @@ static int __devinit ab8500_btemp_probe(struct
platform_device *pdev)
create_singlethread_workqueue("ab8500_btemp_wq");
if (di->btemp_wq == NULL) {
dev_err(di->dev, "failed to create work queue\n");
- goto free_device_info;
+ return -ENOMEM;
}
/* Init work for measuring temperature periodically */
@@ -1092,12 +1117,15 @@ free_irq:
}
free_btemp_wq:
destroy_workqueue(di->btemp_wq);
-free_device_info:
- kfree(di);
return ret;
}
+static const struct of_device_id ab8500_btemp_match[] = {
+ {.compatible = "stericsson,ab8500-btemp",},
+ {},
+};
+
static struct platform_driver ab8500_btemp_driver = {
.probe = ab8500_btemp_probe,
.remove = __devexit_p(ab8500_btemp_remove),
@@ -1106,6 +1134,7 @@ static struct platform_driver ab8500_btemp_driver = {
.driver = {
.name = "ab8500-btemp",
.owner = THIS_MODULE,
+ .of_match_table = ab8500_btemp_match,
},
};
--
1.7.9.5
_______________________________________________
linaro-dev mailing list
linaro-dev@lists.linaro.org
http://lists.linaro.org/mailman/listinfo/linaro-dev
