Commit 0074b49b authored by Philip, Avinash's avatar Philip, Avinash Committed by Thierry Reding
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pwm: pwm-tiehrpwm: Update the clock handling of pwm-tiehrpwm driver 



The clock framework has changed and it's now better to invoke
clock_prepare_enable() and clk_disable_unprepare() rather than the
legacy clk_enable() and clk_disable() calls. This patch converts the
pwm-tiehrpwm driver to the new framework.

Signed-off-by: default avatarPhilip Avinash <avinashphilip@ti.com>
Signed-off-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
parent 3ccb1c17

drivers/pwm/pwm-tiehrpwm.c

+8 −2
Original line number Diff line number Diff line
@@ -318,6 +318,7 @@ static int ehrpwm_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) 
{

	struct ehrpwm_pwm_chip *pc = to_ehrpwm_pwm_chip(chip);

	unsigned short aqcsfrc_val, aqcsfrc_mask;

	int ret;



	/* Leave clock enabled on enabling PWM */

	pm_runtime_get_sync(chip->dev);
@@ -341,7 +342,12 @@ static int ehrpwm_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) 
	configure_polarity(pc, pwm->hwpwm);



	/* Enable TBCLK before enabling PWM device */

	clk_enable(pc->tbclk);

	ret = clk_prepare_enable(pc->tbclk);

	if (ret) {

		pr_err("Failed to enable TBCLK for %s\n",

				dev_name(pc->chip.dev));

		return ret;

	}



	/* Enable time counter for free_run */

	ehrpwm_modify(pc->mmio_base, TBCTL, TBCTL_RUN_MASK, TBCTL_FREE_RUN);
@@ -372,7 +378,7 @@ static void ehrpwm_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) 
	ehrpwm_modify(pc->mmio_base, AQCSFRC, aqcsfrc_mask, aqcsfrc_val);



	/* Disabling TBCLK on PWM disable */

	clk_disable(pc->tbclk);

	clk_disable_unprepare(pc->tbclk);



	/* Stop Time base counter */

	ehrpwm_modify(pc->mmio_base, TBCTL, TBCTL_RUN_MASK, TBCTL_STOP_NEXT);