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power: supply: ab8500_fg: Convert to IIO ADC
This switches the AB8500 fuel gauge driver to using the standard IIO ADC channel lookup and conversion routines. Acked-by: Sebastian Reichel <sre@kernel.org> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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1 changed files with 15 additions and 8 deletions
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@ -32,7 +32,7 @@
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#include <linux/mfd/abx500.h>
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#include <linux/mfd/abx500/ab8500.h>
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#include <linux/mfd/abx500/ab8500-bm.h>
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#include <linux/mfd/abx500/ab8500-gpadc.h>
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#include <linux/iio/consumer.h>
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#include <linux/kernel.h>
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#define MILLI_TO_MICRO 1000
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@ -182,7 +182,7 @@ struct inst_curr_result_list {
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* @bat_cap: Structure for battery capacity specific parameters
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* @avg_cap: Average capacity filter
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* @parent: Pointer to the struct ab8500
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* @gpadc: Pointer to the struct gpadc
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* @main_bat_v: ADC channel for the main battery voltage
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* @bm: Platform specific battery management information
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* @fg_psy: Structure that holds the FG specific battery properties
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* @fg_wq: Work queue for running the FG algorithm
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@ -224,7 +224,7 @@ struct ab8500_fg {
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struct ab8500_fg_battery_capacity bat_cap;
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struct ab8500_fg_avg_cap avg_cap;
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struct ab8500 *parent;
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struct ab8500_gpadc *gpadc;
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struct iio_channel *main_bat_v;
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struct abx500_bm_data *bm;
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struct power_supply *fg_psy;
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struct workqueue_struct *fg_wq;
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@ -829,13 +829,13 @@ static void ab8500_fg_acc_cur_work(struct work_struct *work)
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*/
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static int ab8500_fg_bat_voltage(struct ab8500_fg *di)
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{
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int vbat;
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int vbat, ret;
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static int prev;
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vbat = ab8500_gpadc_convert(di->gpadc, MAIN_BAT_V);
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if (vbat < 0) {
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ret = iio_read_channel_processed(di->main_bat_v, &vbat);
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if (ret < 0) {
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dev_err(di->dev,
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"%s gpadc conversion failed, using previous value\n",
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"%s ADC conversion failed, using previous value\n",
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__func__);
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return prev;
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}
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@ -3066,7 +3066,14 @@ static int ab8500_fg_probe(struct platform_device *pdev)
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/* get parent data */
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di->dev = &pdev->dev;
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di->parent = dev_get_drvdata(pdev->dev.parent);
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di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
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di->main_bat_v = devm_iio_channel_get(&pdev->dev, "main_bat_v");
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if (IS_ERR(di->main_bat_v)) {
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if (PTR_ERR(di->main_bat_v) == -ENODEV)
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return -EPROBE_DEFER;
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dev_err(&pdev->dev, "failed to get main battery ADC channel\n");
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return PTR_ERR(di->main_bat_v);
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}
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psy_cfg.supplied_to = supply_interface;
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psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface);
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