From 10fa8116407b3fc4aa0a5f816e8f4bec2d9ac053 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 1 Mar 2016 11:00:18 -0800 Subject: [PATCH] UPSTREAM: clk: pwm: Use pwm_get_args() where appropriate The PWM framework has clarified the concept of reference PWM config (the platform dependent config retrieved from the DT or the PWM lookup table) and real PWM state. Use pwm_get_args() when the PWM user wants to retrieve this reference config and not the current state. This is part of the rework allowing the PWM framework to support hardware readout and expose real PWM state even when the PWM has just been requested (before the user calls pwm_config/enable/disable()). Signed-off-by: Boris Brezillon Acked-by: Stephen Boyd Signed-off-by: Thierry Reding (cherry picked from commit dd0b38b7ca0d8c8aadcf8a17d7c90d36ab8ab6e4) Change-Id: I54c4b3853359b5fa41f8f949b504f82c6f069034 Signed-off-by: Zhangbin Tong --- drivers/clk/clk-pwm.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/clk/clk-pwm.c b/drivers/clk/clk-pwm.c index 328fcfcefd8c..9897eb1585b5 100644 --- a/drivers/clk/clk-pwm.c +++ b/drivers/clk/clk-pwm.c @@ -59,6 +59,7 @@ static int clk_pwm_probe(struct platform_device *pdev) struct clk_init_data init; struct clk_pwm *clk_pwm; struct pwm_device *pwm; + struct pwm_args pargs; const char *clk_name; struct clk *clk; int ret; @@ -71,22 +72,28 @@ static int clk_pwm_probe(struct platform_device *pdev) if (IS_ERR(pwm)) return PTR_ERR(pwm); - if (!pwm->period) { + pwm_get_args(pwm, &pargs); + if (!pargs.period) { dev_err(&pdev->dev, "invalid PWM period\n"); return -EINVAL; } if (of_property_read_u32(node, "clock-frequency", &clk_pwm->fixed_rate)) - clk_pwm->fixed_rate = NSEC_PER_SEC / pwm->period; + clk_pwm->fixed_rate = NSEC_PER_SEC / pargs.period; - if (pwm->period != NSEC_PER_SEC / clk_pwm->fixed_rate && - pwm->period != DIV_ROUND_UP(NSEC_PER_SEC, clk_pwm->fixed_rate)) { + if (pargs.period != NSEC_PER_SEC / clk_pwm->fixed_rate && + pargs.period != DIV_ROUND_UP(NSEC_PER_SEC, clk_pwm->fixed_rate)) { dev_err(&pdev->dev, "clock-frequency does not match PWM period\n"); return -EINVAL; } - ret = pwm_config(pwm, (pwm->period + 1) >> 1, pwm->period); + /* + * FIXME: pwm_apply_args() should be removed when switching to the + * atomic PWM API. + */ + pwm_apply_args(pwm); + ret = pwm_config(pwm, (pargs.period + 1) >> 1, pargs.period); if (ret < 0) return ret; -- 2.34.1