Signed-off-by: Marek Belisko <marek@xxxxxxxxxxxxx> --- drivers/power/twl4030_madc_battery.c | 83 +++++++++++++++++++++++++++++++++++- 1 file changed, 82 insertions(+), 1 deletion(-) diff --git a/drivers/power/twl4030_madc_battery.c b/drivers/power/twl4030_madc_battery.c index 42685df..24c69f7 100644 --- a/drivers/power/twl4030_madc_battery.c +++ b/drivers/power/twl4030_madc_battery.c @@ -20,6 +20,7 @@ #include <linux/i2c/twl4030-madc.h> #include <linux/power/twl4030_madc_battery.h> #include <linux/iio/consumer.h> +#include <linux/of.h> struct twl4030_madc_battery { struct power_supply psy; @@ -184,6 +185,82 @@ static int twl4030_cmp(const void *a, const void *b) ((struct twl4030_madc_bat_calibration *)a)->voltage; } +#ifdef CONFIG_OF +static struct twl4030_madc_bat_platform_data * + twl4030_madc_dt_probe(struct platform_device *pdev) +{ + struct twl4030_madc_bat_platform_data *pdata; + struct device_node *np = pdev->dev.of_node; + int ret; + int i, proplen; + + pdata = devm_kzalloc(&pdev->dev, + sizeof(struct twl4030_madc_bat_platform_data), + GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + + ret = of_property_read_u32(np, "capacity", &pdata->capacity); + if (ret != 0) + return ERR_PTR(-EINVAL); + + /* parse and prepare charging data */ + proplen = of_property_count_u32_elems(np, "charging-calibration-data"); + if (proplen < 0) { + dev_warn(&pdev->dev, "No 'charging-calibration-data' property found\n"); + return ERR_PTR(-EINVAL); + } + + pdata->charging = devm_kzalloc(&pdev->dev, + sizeof(struct twl4030_madc_bat_calibration) * (proplen / 2), + GFP_KERNEL); + + for (i = 0; i < proplen / 2; i++) { + of_property_read_u32_index(np, "charging-calibration-data", + i * 2, + (u32 *)&pdata->charging[i].voltage); + of_property_read_u32_index(np, "charging-calibration-data", + i * 2 + 1, + (u32 *)&pdata->charging[i].level); + } + + /* parse and prepare discharging data */ + proplen = of_property_count_u32_elems(np, + "discharging-calibration-data"); + if (proplen < 0) { + dev_warn(&pdev->dev, "No 'discharging-calibration-data' property found\n"); + return ERR_PTR(-EINVAL); + } + + pdata->discharging = devm_kzalloc(&pdev->dev, + sizeof(struct twl4030_madc_bat_calibration) * (proplen / 2), + GFP_KERNEL); + + for (i = 0; i < proplen / 2; i++) { + of_property_read_u32_index(np, "discharging-calibration-data", + i * 2, + (u32 *)&pdata->discharging[i].voltage); + of_property_read_u32_index(np, "discharging-calibration-data", + i * 2 + 1, + (u32 *)&pdata->discharging[i].level); + } + + return pdata; +} + +static const struct of_device_id of_twl4030_madc_match[] = { + { .compatible = "ti,twl4030-madc-battery", }, + {}, +}; + +#else +static struct twl4030_madc_bat_platform_data * + twl4030_madc_dt_probe(struct platform_device *pdev) +{ + return ERR_PTR(-ENODEV); +} +#endif + static int twl4030_madc_battery_probe(struct platform_device *pdev) { struct twl4030_madc_battery *twl4030_madc_bat; @@ -193,6 +270,9 @@ static int twl4030_madc_battery_probe(struct platform_device *pdev) if (!twl4030_madc_bat) return -ENOMEM; + if (!pdata) + pdata = twl4030_madc_dt_probe(pdev); + twl4030_madc_bat->psy.name = "twl4030_battery"; twl4030_madc_bat->psy.type = POWER_SUPPLY_TYPE_BATTERY; twl4030_madc_bat->psy.properties = twl4030_madc_bat_props; @@ -201,7 +281,7 @@ static int twl4030_madc_battery_probe(struct platform_device *pdev) twl4030_madc_bat->psy.get_property = twl4030_madc_bat_get_property; twl4030_madc_bat->psy.external_power_changed = twl4030_madc_bat_ext_changed; - + twl4030_madc_bat->channel_temp = iio_channel_get(&pdev->dev, "temp"); if (IS_ERR(twl4030_madc_bat->channel_temp)) return PTR_ERR(twl4030_madc_bat->channel_temp); @@ -242,6 +322,7 @@ static int twl4030_madc_battery_remove(struct platform_device *pdev) static struct platform_driver twl4030_madc_battery_driver = { .driver = { .name = "twl4030_madc_battery", + .of_match_table = of_match_ptr(of_twl4030_madc_match), }, .probe = twl4030_madc_battery_probe, .remove = twl4030_madc_battery_remove, -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html