pwm: imx27: Only enable the clocks once in .get_state()
Currently the function pwm_imx27_get_state() of enables the clocks once unconditionally at the start, a second time if the PWM is enabled and disables unconditionally at the end. Simplify that to enable once at the start and disable conditionally at the end. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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@ -125,14 +125,10 @@ static void pwm_imx27_get_state(struct pwm_chip *chip,
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val = readl(imx->mmio_base + MX3_PWMCR);
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val = readl(imx->mmio_base + MX3_PWMCR);
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if (val & MX3_PWMCR_EN) {
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if (val & MX3_PWMCR_EN)
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state->enabled = true;
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state->enabled = true;
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ret = pwm_imx27_clk_prepare_enable(chip);
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else
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if (ret)
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return;
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} else {
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state->enabled = false;
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state->enabled = false;
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}
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switch (FIELD_GET(MX3_PWMCR_POUTC, val)) {
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switch (FIELD_GET(MX3_PWMCR_POUTC, val)) {
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case MX3_PWMCR_POUTC_NORMAL:
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case MX3_PWMCR_POUTC_NORMAL:
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@ -164,7 +160,8 @@ static void pwm_imx27_get_state(struct pwm_chip *chip,
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state->duty_cycle = 0;
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state->duty_cycle = 0;
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}
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}
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pwm_imx27_clk_disable_unprepare(chip);
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if (!state->enabled)
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pwm_imx27_clk_disable_unprepare(chip);
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}
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}
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static void pwm_imx27_sw_reset(struct pwm_chip *chip)
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static void pwm_imx27_sw_reset(struct pwm_chip *chip)
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