pwm: fsl-ftm: Added the support of per-compatible data (db6c51ab) · Commits · 戴 / test

drivers/pwm/pwm-fsl-ftm.c

+30 −2

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@
		#include <linux/module.h>
		#include <linux/mutex.h>
		#include <linux/of_address.h>
		#include <linux/of_device.h>
		#include <linux/platform_device.h>
		#include <linux/pm.h>
		#include <linux/pwm.h>
		@@ -75,6 +76,10 @@ enum fsl_pwm_clk {
		FSL_PWM_CLK_MAX
		};

		struct fsl_ftm_soc {
		bool has_enable_bits;
		};

		struct fsl_pwm_chip {
		struct pwm_chip chip;

		@@ -89,6 +94,8 @@ struct fsl_pwm_chip {

		struct clk *ipg_clk;
		struct clk *clk[FSL_PWM_CLK_MAX];

		const struct fsl_ftm_soc *soc;
		};

		static inline struct fsl_pwm_chip to_fsl_chip(struct pwm_chip chip)
		@@ -98,15 +105,31 @@ static inline struct fsl_pwm_chip to_fsl_chip(struct pwm_chip chip)

		static int fsl_pwm_request(struct pwm_chip chip, struct pwm_device pwm)
		{
		int ret;
		struct fsl_pwm_chip *fpc = to_fsl_chip(chip);

		return clk_prepare_enable(fpc->ipg_clk);
		ret = clk_prepare_enable(fpc->ipg_clk);
		if (!ret && fpc->soc->has_enable_bits) {
		mutex_lock(&fpc->lock);
		regmap_update_bits(fpc->regmap, FTM_SC, BIT(pwm->hwpwm + 16),
		BIT(pwm->hwpwm + 16));
		mutex_unlock(&fpc->lock);
		}

		return ret;
		}

		static void fsl_pwm_free(struct pwm_chip chip, struct pwm_device pwm)
		{
		struct fsl_pwm_chip *fpc = to_fsl_chip(chip);

		if (fpc->soc->has_enable_bits) {
		mutex_lock(&fpc->lock);
		regmap_update_bits(fpc->regmap, FTM_SC, BIT(pwm->hwpwm + 16),
		0);
		mutex_unlock(&fpc->lock);
		}

		clk_disable_unprepare(fpc->ipg_clk);
		}

		@@ -409,6 +432,7 @@ static int fsl_pwm_probe(struct platform_device *pdev)

		mutex_init(&fpc->lock);

		fpc->soc = of_device_get_match_data(&pdev->dev);
		fpc->chip.dev = &pdev->dev;

		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		@@ -534,8 +558,12 @@ static const struct dev_pm_ops fsl_pwm_pm_ops = {
		SET_SYSTEM_SLEEP_PM_OPS(fsl_pwm_suspend, fsl_pwm_resume)
		};

		static const struct fsl_ftm_soc vf610_ftm_pwm = {
		.has_enable_bits = false,
		};

		static const struct of_device_id fsl_pwm_dt_ids[] = {
		{ .compatible = "fsl,vf610-ftm-pwm", },
		{ .compatible = "fsl,vf610-ftm-pwm", .data = &vf610_ftm_pwm },
		{ /* sentinel */ }
		};
		MODULE_DEVICE_TABLE(of, fsl_pwm_dt_ids);

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