Merge branch 'for-4.7/pwm-regulator' of git://git.kernel.org/pub/scm/linux/kernel...

diff --cc drivers/regulator/pwm-regulator.c
index 8e928f23279b6ddfef96c288b01b364e51d77b12,ffdb895ace0ad112d7bd4ebbfa99f460f98732fd..fafa3488e960520752b44b482864401925a22a6f
--- 1/drivers/regulator/pwm-regulator.c
--- 2/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@@ -63,14 -63,14 +63,14 @@@ static int pwm_regulator_set_voltage_se
        int dutycycle;
        int ret;
  
-       pwm_reg_period = pwm_get_period(drvdata->pwm);
+       pwm_get_args(drvdata->pwm, &pargs);
  
-       dutycycle = (pwm_reg_period *
+       dutycycle = (pargs.period *
                    drvdata->duty_cycle_table[selector].dutycycle) / 100;
  
-       ret = pwm_config(drvdata->pwm, dutycycle, pwm_reg_period);
+       ret = pwm_config(drvdata->pwm, dutycycle, pargs.period);
        if (ret) {
 -              dev_err(&rdev->dev, "Failed to configure PWM\n");
 +              dev_err(&rdev->dev, "Failed to configure PWM: %d\n", ret);
                return ret;
        }
  
@@@ -126,35 -138,17 +126,36 @@@ static int pwm_regulator_set_voltage(st
  {
        struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
        unsigned int ramp_delay = rdev->constraints->ramp_delay;
-       unsigned int period = pwm_get_period(drvdata->pwm);
+       struct pwm_args pargs;
 -      int duty_cycle;
 +      unsigned int req_diff = min_uV - rdev->constraints->min_uV;
 +      unsigned int diff;
 +      unsigned int duty_pulse;
 +      u64 req_period;
 +      u32 rem;
        int ret;
  
 -      duty_cycle = pwm_voltage_to_duty_cycle_percentage(rdev, min_uV);
+       pwm_get_args(drvdata->pwm, &pargs);
-       req_period = req_diff * period;
 +      diff = rdev->constraints->max_uV - rdev->constraints->min_uV;
 +
 +      /* First try to find out if we get the iduty cycle time which is
 +       * factor of PWM period time. If (request_diff_to_min * pwm_period)
 +       * is perfect divided by voltage_range_diff then it is possible to
 +       * get duty cycle time which is factor of PWM period. This will help
 +       * to get output voltage nearer to requested value as there is no
 +       * calculation loss.
 +       */
-               duty_pulse = (period / 100) * ((req_diff * 100) / diff);
++      req_period = req_diff * pargs.period;
 +      div_u64_rem(req_period, diff, &rem);
 +      if (!rem) {
 +              do_div(req_period, diff);
 +              duty_pulse = (unsigned int)req_period;
 +      } else {
++              duty_pulse = (pargs.period / 100) * ((req_diff * 100) / diff);
 +      }
  
-       ret = pwm_config(drvdata->pwm, duty_pulse, period);
 -      ret = pwm_config(drvdata->pwm, (pargs.period / 100) * duty_cycle,
 -                       pargs.period);
++      ret = pwm_config(drvdata->pwm, duty_pulse, pargs.period);
        if (ret) {
 -              dev_err(&rdev->dev, "Failed to configure PWM\n");
 +              dev_err(&rdev->dev, "Failed to configure PWM: %d\n", ret);
                return ret;
        }
  
@@@ -284,11 -279,16 +285,17 @@@ static int pwm_regulator_probe(struct p
  
        drvdata->pwm = devm_pwm_get(&pdev->dev, NULL);
        if (IS_ERR(drvdata->pwm)) {
 -              dev_err(&pdev->dev, "Failed to get PWM\n");
 -              return PTR_ERR(drvdata->pwm);
 +              ret = PTR_ERR(drvdata->pwm);
 +              dev_err(&pdev->dev, "Failed to get PWM: %d\n", ret);
 +              return ret;
        }
  
+       /*
+        * FIXME: pwm_apply_args() should be removed when switching to the
+        * atomic PWM API.
+        */
+       pwm_apply_args(drvdata->pwm);
+ 
        regulator = devm_regulator_register(&pdev->dev,
                                            &drvdata->desc, &config);
        if (IS_ERR(regulator)) {