clk: pwm: implement the .get_duty_cycle callback (4c34282f) · Commits · 戴 / test

Commit ("clk: add duty cycle support") added support for getting and setting the duty cycle of a clock. This implements the get_duty_cycle callback for PWM based clocks so the duty cycle is shown in the debugfs output (/sys/kernel/debug/clk/clk_summary). Signed-off-by:

Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:

Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk-pwm.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -47,10 +47,24 @@ static unsigned long clk_pwm_recalc_rate(struct clk_hw *hw,
		return clk_pwm->fixed_rate;
		}

		static int clk_pwm_get_duty_cycle(struct clk_hw hw, struct clk_duty duty)
		{
		struct clk_pwm *clk_pwm = to_clk_pwm(hw);
		struct pwm_state state;

		pwm_get_state(clk_pwm->pwm, &state);

		duty->num = state.duty_cycle;
		duty->den = state.period;

		return 0;
		}

		static const struct clk_ops clk_pwm_ops = {
		.prepare = clk_pwm_prepare,
		.unprepare = clk_pwm_unprepare,
		.recalc_rate = clk_pwm_recalc_rate,
		.get_duty_cycle = clk_pwm_get_duty_cycle,
		};

		static int clk_pwm_probe(struct platform_device *pdev)

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