pwm: sifive: Make use of devm_pwmchip_alloc() function
This prepares the pwm-sifive driver to further changes of the pwm core outlined in the commit introducing devm_pwmchip_alloc(). There is no intended semantical change and the driver should behave as before. Link: https://lore.kernel.org/r/30a4cacafe2c323f2531dd1c1126f0bf0fe5e03c.1707900770.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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c4f4af7d79
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@ -41,7 +41,6 @@
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#define PWM_SIFIVE_DEFAULT_PERIOD 10000000
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struct pwm_sifive_ddata {
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struct pwm_chip chip;
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struct device *parent;
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struct mutex lock; /* lock to protect user_count and approx_period */
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struct notifier_block notifier;
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@ -55,7 +54,7 @@ struct pwm_sifive_ddata {
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static inline
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struct pwm_sifive_ddata *pwm_sifive_chip_to_ddata(struct pwm_chip *chip)
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{
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return container_of(chip, struct pwm_sifive_ddata, chip);
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return pwmchip_get_drvdata(chip);
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}
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static int pwm_sifive_request(struct pwm_chip *chip, struct pwm_device *pwm)
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@ -231,15 +230,14 @@ static int pwm_sifive_probe(struct platform_device *pdev)
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u32 val;
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unsigned int enabled_pwms = 0, enabled_clks = 1;
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ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);
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if (!ddata)
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return -ENOMEM;
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chip = devm_pwmchip_alloc(dev, 4, sizeof(*ddata));
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if (IS_ERR(chip))
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return PTR_ERR(chip);
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ddata = pwm_sifive_chip_to_ddata(chip);
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ddata->parent = dev;
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mutex_init(&ddata->lock);
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chip = &ddata->chip;
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chip->dev = ddata->parent = dev;
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chip->ops = &pwm_sifive_ops;
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chip->npwm = 4;
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ddata->regs = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(ddata->regs))
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