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pwm: sti: Prepare removing pwm_chip from driver data

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This prepares the driver for further changes that will drop struct
pwm_chip chip from struct sti_pwm_chip. Use the pwm_chip as driver data
instead of the sti_pwm_chip to get access to the pwm_chip in
sti_pwm_remove() without using pc->chip.

Link: https://lore.kernel.org/r/56d53372aacff6871df4d6c6779c9dac94592696.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2024-02-14 10:32:38 +01:00
parent f2075c0b1a
commit 54272761ce
1 changed files with 10 additions and 7 deletions
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17
drivers/pwm/pwm-sti.c
View file

@ -570,6 +570,7 @@ static int sti_pwm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct sti_pwm_compat_data *cdata;
struct pwm_chip *chip;
struct sti_pwm_chip *pc;
unsigned int i;
int irq, ret;
@ -577,6 +578,7 @@ static int sti_pwm_probe(struct platform_device *pdev)
pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
return -ENOMEM;
chip = &pc->chip;
cdata = devm_kzalloc(dev, sizeof(*cdata), GFP_KERNEL);
if (!cdata)
@ -653,9 +655,9 @@ static int sti_pwm_probe(struct platform_device *pdev)
return -ENOMEM;
}
pc->chip.dev = dev;
pc->chip.ops = &sti_pwm_ops;
pc->chip.npwm = max(cdata->pwm_num_devs, cdata->cpt_num_devs);
chip->dev = dev;
chip->ops = &sti_pwm_ops;
chip->npwm = max(cdata->pwm_num_devs, cdata->cpt_num_devs);
for (i = 0; i < cdata->cpt_num_devs; i++) {
struct sti_cpt_ddata *ddata = &cdata->ddata[i];
@ -664,23 +666,24 @@ static int sti_pwm_probe(struct platform_device *pdev)
mutex_init(&ddata->lock);
}
ret = pwmchip_add(&pc->chip);
ret = pwmchip_add(chip);
if (ret < 0) {
clk_unprepare(pc->pwm_clk);
clk_unprepare(pc->cpt_clk);
return ret;
}
platform_set_drvdata(pdev, pc);
platform_set_drvdata(pdev, chip);
return 0;
}
static void sti_pwm_remove(struct platform_device *pdev)
{
struct sti_pwm_chip *pc = platform_get_drvdata(pdev);
struct pwm_chip *chip = platform_get_drvdata(pdev);
struct sti_pwm_chip *pc = to_sti_pwmchip(chip);
pwmchip_remove(&pc->chip);
pwmchip_remove(chip);
clk_unprepare(pc->pwm_clk);
clk_unprepare(pc->cpt_clk);