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pwm: stm32-lp: 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 stm32_pwm_lp. Use the pwm_chip as driver
data instead of the stm32_pwm_lp to get access to the pwm_chip in
stm32_pwm_lp_suspend() without using priv->chip.

Link: https://lore.kernel.org/r/df47d1aff9b529c9a4762b6ba339a18cecba1497.1707900770.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 10:32:46 +01:00
parent 3e4224a98b
commit 8f5e2dcbe2
1 changed files with 10 additions and 8 deletions
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18
drivers/pwm/pwm-stm32-lp.c
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@@ -197,6 +197,7 @@ static int stm32_pwm_lp_probe(struct platform_device *pdev)
{
struct stm32_lptimer *ddata = dev_get_drvdata(pdev->dev.parent);
struct stm32_pwm_lp *priv;
struct pwm_chip *chip;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -205,28 +206,29 @@ static int stm32_pwm_lp_probe(struct platform_device *pdev)
priv->regmap = ddata->regmap;
priv->clk = ddata->clk;
priv->chip.dev = &pdev->dev;
priv->chip.ops = &stm32_pwm_lp_ops;
priv->chip.npwm = 1;
chip = &priv->chip;
chip->dev = &pdev->dev;
chip->ops = &stm32_pwm_lp_ops;
chip->npwm = 1;
ret = devm_pwmchip_add(&pdev->dev, &priv->chip);
ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return ret;
platform_set_drvdata(pdev, priv);
platform_set_drvdata(pdev, chip);
return 0;
}
static int stm32_pwm_lp_suspend(struct device *dev)
{
struct stm32_pwm_lp *priv = dev_get_drvdata(dev);
struct pwm_chip *chip = dev_get_drvdata(dev);
struct pwm_state state;
pwm_get_state(&priv->chip.pwms[0], &state);
pwm_get_state(&chip->pwms[0], &state);
if (state.enabled) {
dev_err(dev, "The consumer didn't stop us (%s)\n",
priv->chip.pwms[0].label);
chip->pwms[0].label);
return -EBUSY;
}