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pwm: tiecap: Change prototype of helpers to prepare further changes
This prepares the driver for further changes that will make it harder to determine the pwm_chip from a given ecap_pwm_chip. To just not have to do that, rework ecap_pwm_save_context() and ecap_pwm_restore_context take a pwm_chip. Also use the pwm_chip as driver data instead of the ecap_pwm_chip. Link: https://lore.kernel.org/r/ed031f201ff52c6b298de2dc81b06aad3a0207f8.1707900770.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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62f59c107a
commit
02aa760d29
@ -218,6 +218,7 @@ static int ecap_pwm_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct ecap_pwm_chip *pc;
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struct pwm_chip *chip;
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struct clk *clk;
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int ret;
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@ -244,21 +245,22 @@ static int ecap_pwm_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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pc->chip.dev = &pdev->dev;
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pc->chip.ops = &ecap_pwm_ops;
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pc->chip.npwm = 1;
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chip = &pc->chip;
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chip->dev = &pdev->dev;
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chip->ops = &ecap_pwm_ops;
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chip->npwm = 1;
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pc->mmio_base = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(pc->mmio_base))
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return PTR_ERR(pc->mmio_base);
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ret = devm_pwmchip_add(&pdev->dev, &pc->chip);
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ret = devm_pwmchip_add(&pdev->dev, chip);
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if (ret < 0) {
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dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
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return ret;
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}
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platform_set_drvdata(pdev, pc);
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platform_set_drvdata(pdev, chip);
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pm_runtime_enable(&pdev->dev);
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return 0;
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@ -269,17 +271,21 @@ static void ecap_pwm_remove(struct platform_device *pdev)
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pm_runtime_disable(&pdev->dev);
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}
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static void ecap_pwm_save_context(struct ecap_pwm_chip *pc)
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static void ecap_pwm_save_context(struct pwm_chip *chip)
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{
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pm_runtime_get_sync(pc->chip.dev);
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struct ecap_pwm_chip *pc = to_ecap_pwm_chip(chip);
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pm_runtime_get_sync(chip->dev);
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pc->ctx.ecctl2 = readw(pc->mmio_base + ECCTL2);
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pc->ctx.cap4 = readl(pc->mmio_base + CAP4);
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pc->ctx.cap3 = readl(pc->mmio_base + CAP3);
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pm_runtime_put_sync(pc->chip.dev);
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pm_runtime_put_sync(chip->dev);
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}
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static void ecap_pwm_restore_context(struct ecap_pwm_chip *pc)
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static void ecap_pwm_restore_context(struct pwm_chip *chip)
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{
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struct ecap_pwm_chip *pc = to_ecap_pwm_chip(chip);
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writel(pc->ctx.cap3, pc->mmio_base + CAP3);
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writel(pc->ctx.cap4, pc->mmio_base + CAP4);
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writew(pc->ctx.ecctl2, pc->mmio_base + ECCTL2);
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@ -287,10 +293,10 @@ static void ecap_pwm_restore_context(struct ecap_pwm_chip *pc)
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static int ecap_pwm_suspend(struct device *dev)
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{
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struct ecap_pwm_chip *pc = dev_get_drvdata(dev);
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struct pwm_device *pwm = pc->chip.pwms;
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struct pwm_chip *chip = dev_get_drvdata(dev);
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struct pwm_device *pwm = chip->pwms;
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ecap_pwm_save_context(pc);
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ecap_pwm_save_context(chip);
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/* Disable explicitly if PWM is running */
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if (pwm_is_enabled(pwm))
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@ -301,14 +307,14 @@ static int ecap_pwm_suspend(struct device *dev)
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static int ecap_pwm_resume(struct device *dev)
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{
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struct ecap_pwm_chip *pc = dev_get_drvdata(dev);
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struct pwm_device *pwm = pc->chip.pwms;
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struct pwm_chip *chip = dev_get_drvdata(dev);
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struct pwm_device *pwm = chip->pwms;
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/* Enable explicitly if PWM was running */
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if (pwm_is_enabled(pwm))
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pm_runtime_get_sync(dev);
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ecap_pwm_restore_context(pc);
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ecap_pwm_restore_context(chip);
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return 0;
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}
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