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power: supply: generic-adc-battery: convert to managed resources

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Convert driver to use managed resources to simplify driver code.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Sebastian Reichel 2023-03-17 23:56:56 +01:00
parent 27a2195efa
commit 93297ef692
1 changed files with 23 additions and 58 deletions
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81
drivers/power/supply/generic-adc-battery.c
View file

@ -23,6 +23,7 @@
#include <linux/iio/consumer.h>
#include <linux/iio/types.h>
#include <linux/power/generic-adc-battery.h>
#include <linux/devm-helpers.h>
#define JITTER_DEFAULT 10 /* hope 10ms is enough */
@ -266,14 +267,13 @@ static int gab_probe(struct platform_device *pdev)
* copying the static properties and allocating extra memory for holding
* the extra configurable properties received from platform data.
*/
properties = kcalloc(ARRAY_SIZE(gab_props) +
ARRAY_SIZE(gab_chan_name),
sizeof(*properties),
GFP_KERNEL);
if (!properties) {
ret = -ENOMEM;
goto first_mem_fail;
}
properties = devm_kcalloc(&pdev->dev,
ARRAY_SIZE(gab_props) +
ARRAY_SIZE(gab_chan_name),
sizeof(*properties),
GFP_KERNEL);
if (!properties)
return -ENOMEM;
memcpy(properties, gab_props, sizeof(gab_props));
@ -282,12 +282,13 @@ static int gab_probe(struct platform_device *pdev)
* based on the channel supported by consumer device.
*/
for (chan = 0; chan < ARRAY_SIZE(gab_chan_name); chan++) {
adc_bat->channel[chan] = iio_channel_get(&pdev->dev,
gab_chan_name[chan]);
adc_bat->channel[chan] = devm_iio_channel_get(&pdev->dev, gab_chan_name[chan]);
if (IS_ERR(adc_bat->channel[chan])) {
ret = PTR_ERR(adc_bat->channel[chan]);
if (ret != -ENODEV)
return dev_err_probe(&pdev->dev, ret, "Failed to get ADC channel %s\n", gab_chan_name[chan]);
adc_bat->channel[chan] = NULL;
} else {
} else if (adc_bat->channel[chan]) {
/* copying properties for supported channels only */
int index2;
@ -302,10 +303,8 @@ static int gab_probe(struct platform_device *pdev)
}
/* none of the channels are supported so let's bail out */
if (!any) {
ret = -ENODEV;
goto second_mem_fail;
}
if (!any)
return dev_err_probe(&pdev->dev, -ENODEV, "Failed to get any ADC channel\n");
/*
* Total number of properties is equal to static properties
@ -316,25 +315,24 @@ static int gab_probe(struct platform_device *pdev)
psy_desc->properties = properties;
psy_desc->num_properties = index;
adc_bat->psy = power_supply_register(&pdev->dev, psy_desc, &psy_cfg);
if (IS_ERR(adc_bat->psy)) {
ret = PTR_ERR(adc_bat->psy);
goto err_reg_fail;
}
adc_bat->psy = devm_power_supply_register(&pdev->dev, psy_desc, &psy_cfg);
if (IS_ERR(adc_bat->psy))
return dev_err_probe(&pdev->dev, PTR_ERR(adc_bat->psy), "Failed to register power-supply device\n");
INIT_DELAYED_WORK(&adc_bat->bat_work, gab_work);
ret = devm_delayed_work_autocancel(&pdev->dev, &adc_bat->bat_work, gab_work);
if (ret)
return dev_err_probe(&pdev->dev, ret, "Failed to register delayed work\n");
adc_bat->charge_finished = devm_gpiod_get_optional(&pdev->dev,
"charged", GPIOD_IN);
adc_bat->charge_finished = devm_gpiod_get_optional(&pdev->dev, "charged", GPIOD_IN);
if (adc_bat->charge_finished) {
int irq;
irq = gpiod_to_irq(adc_bat->charge_finished);
ret = request_any_context_irq(irq, gab_charged,
ret = devm_request_any_context_irq(&pdev->dev, irq, gab_charged,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"battery charged", adc_bat);
if (ret < 0)
goto gpio_req_fail;
return dev_err_probe(&pdev->dev, ret, "Failed to register irq\n");
}
platform_set_drvdata(pdev, adc_bat);
@ -343,38 +341,6 @@ static int gab_probe(struct platform_device *pdev)
schedule_delayed_work(&adc_bat->bat_work,
msecs_to_jiffies(0));
return 0;
gpio_req_fail:
power_supply_unregister(adc_bat->psy);
err_reg_fail:
for (chan = 0; chan < ARRAY_SIZE(gab_chan_name); chan++) {
if (adc_bat->channel[chan])
iio_channel_release(adc_bat->channel[chan]);
}
second_mem_fail:
kfree(properties);
first_mem_fail:
return ret;
}
static int gab_remove(struct platform_device *pdev)
{
int chan;
struct gab *adc_bat = platform_get_drvdata(pdev);
power_supply_unregister(adc_bat->psy);
if (adc_bat->charge_finished)
free_irq(gpiod_to_irq(adc_bat->charge_finished), adc_bat);
for (chan = 0; chan < ARRAY_SIZE(gab_chan_name); chan++) {
if (adc_bat->channel[chan])
iio_channel_release(adc_bat->channel[chan]);
}
kfree(adc_bat->psy_desc.properties);
cancel_delayed_work_sync(&adc_bat->bat_work);
return 0;
}
static int __maybe_unused gab_suspend(struct device *dev)
@ -408,7 +374,6 @@ static struct platform_driver gab_driver = {
.pm = &gab_pm_ops,
},
.probe = gab_probe,
.remove = gab_remove,
};
module_platform_driver(gab_driver);