qualcommax: 6.12: pwm: fixup for 6.12

6.12 PWM core introduced a bunch of incompatible changes, namely removal
of manual module owner assignment, complete PWM struct allocation and usage
refactor, etc.

So, update the driver to follow other drivers in 6.12 so it compiles.

Link: https://github.com/openwrt/openwrt/pull/18795
Signed-off-by: Robert Marko <[email protected]>

target/linux/qualcommax/patches-6.12/0141-pwm-driver-for-qualcomm-ipq6018-pwm-block.patch

@@ -51,7 +51,7 @@ Signed-off-by: Devi Priya <[email protected]>
  obj-$(CONFIG_PWM_KEEMBAY)	+= pwm-keembay.o
 --- /dev/null
 +++ b/drivers/pwm/pwm-ipq.c
-@@ -0,0 +1,280 @@
+@@ -0,0 +1,277 @@
 +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
 +/*
 + * Copyright (c) 2016-2017, 2020 The Linux Foundation. All rights reserved.
@@ -96,14 +96,13 @@ Signed-off-by: Devi Priya <[email protected]>
 +#define IPQ_PWM_REG1_ENABLE		BIT(31)
 +
 +struct ipq_pwm_chip {
-+	struct pwm_chip chip;
 +	struct clk *clk;
 +	void __iomem *mem;
 +};
 +
 +static struct ipq_pwm_chip *ipq_pwm_from_chip(struct pwm_chip *chip)
 +{
-+	return container_of(chip, struct ipq_pwm_chip, chip);
++	return pwmchip_get_drvdata(chip);
 +}
 +
 +static unsigned int ipq_pwm_reg_read(struct pwm_device *pwm, unsigned int reg)
@@ -264,18 +263,19 @@ Signed-off-by: Devi Priya <[email protected]>
 +static const struct pwm_ops ipq_pwm_ops = {
 +	.apply = ipq_pwm_apply,
 +	.get_state = ipq_pwm_get_state,
-+	.owner = THIS_MODULE,
 +};
 +
 +static int ipq_pwm_probe(struct platform_device *pdev)
 +{
++	struct pwm_chip *chip;
 +	struct ipq_pwm_chip *pwm;
 +	struct device *dev = &pdev->dev;
 +	int ret;
 +
-+	pwm = devm_kzalloc(dev, sizeof(*pwm), GFP_KERNEL);
-+	if (!pwm)
-+		return -ENOMEM;
++	chip = devm_pwmchip_alloc(dev, 4, sizeof(*pwm));
++	if (IS_ERR(chip))
++		return PTR_ERR(chip);
++	pwm = ipq_pwm_from_chip(chip);
 +
 +	platform_set_drvdata(pdev, pwm);
 +
@@ -293,13 +293,11 @@ Signed-off-by: Devi Priya <[email protected]>
 +	if (ret)
 +		return dev_err_probe(dev, ret, "clock enable failed");
 +
-+	pwm->chip.dev = dev;
-+	pwm->chip.ops = &ipq_pwm_ops;
-+	pwm->chip.npwm = 4;
++	chip->ops = &ipq_pwm_ops;
 +
-+	ret = pwmchip_add(&pwm->chip);
++	ret = devm_pwmchip_add(dev, chip);
 +	if (ret < 0) {
-+		dev_err_probe(dev, ret, "pwmchip_add() failed\n");
++		dev_err_probe(dev, ret, "devm_pwmchip_add() failed\n");
 +		clk_disable_unprepare(pwm->clk);
 +	}
 +
@@ -310,7 +308,6 @@ Signed-off-by: Devi Priya <[email protected]>
 +{
 +	struct ipq_pwm_chip *pwm = platform_get_drvdata(pdev);
 +
-+	pwmchip_remove(&pwm->chip);
 +	clk_disable_unprepare(pwm->clk);
 +}
 +
@@ -326,7 +323,7 @@ Signed-off-by: Devi Priya <[email protected]>
 +		.of_match_table = pwm_ipq_dt_match,
 +	},
 +	.probe = ipq_pwm_probe,
-+	.remove_new = ipq_pwm_remove,
++	.remove = ipq_pwm_remove,
 +};
 +
 +module_platform_driver(ipq_pwm_driver);