diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-02-07 13:01:19 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-02-07 13:02:20 +0100 |
| commit | 0e85f1ae4ac6dae238b0f35232d1aa52e1b6943f (patch) | |
| tree | 75b387bc359637c15b90ababb1ff073ca68b5bd8 /drivers/regulator/pwm-regulator.c | |
| parent | 2c8ba564a42c7418a726367c73d7c88454848fdc (diff) | |
| parent | f8e4806e0dfa8796b3d7076a7fe054455a59c38b (diff) | |
Merge drm/drm-next into drm-misc-next
Backmerging to update drm-misc-next to the state of v6.8-rc3. Also
fixes a build problem with xe.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'drivers/regulator/pwm-regulator.c')
| -rw-r--r-- | drivers/regulator/pwm-regulator.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c index 698c420e0869..60cfcd741c2a 100644 --- a/drivers/regulator/pwm-regulator.c +++ b/drivers/regulator/pwm-regulator.c @@ -157,7 +157,17 @@ static int pwm_regulator_get_voltage(struct regulator_dev *rdev) pwm_get_state(drvdata->pwm, &pstate); + if (!pstate.enabled) { + if (pstate.polarity == PWM_POLARITY_INVERSED) + pstate.duty_cycle = pstate.period; + else + pstate.duty_cycle = 0; + } + voltage = pwm_get_relative_duty_cycle(&pstate, duty_unit); + if (voltage < min(max_uV_duty, min_uV_duty) || + voltage > max(max_uV_duty, min_uV_duty)) + return -ENOTRECOVERABLE; /* * The dutycycle for min_uV might be greater than the one for max_uV. @@ -313,6 +323,32 @@ static int pwm_regulator_init_continuous(struct platform_device *pdev, return 0; } +static int pwm_regulator_init_boot_on(struct platform_device *pdev, + struct pwm_regulator_data *drvdata, + const struct regulator_init_data *init_data) +{ + struct pwm_state pstate; + + if (!init_data->constraints.boot_on || drvdata->enb_gpio) + return 0; + + pwm_get_state(drvdata->pwm, &pstate); + if (pstate.enabled) + return 0; + + /* + * Update the duty cycle so the output does not change + * when the regulator core enables the regulator (and + * thus the PWM channel). + */ + if (pstate.polarity == PWM_POLARITY_INVERSED) + pstate.duty_cycle = pstate.period; + else + pstate.duty_cycle = 0; + + return pwm_apply_might_sleep(drvdata->pwm, &pstate); +} + static int pwm_regulator_probe(struct platform_device *pdev) { const struct regulator_init_data *init_data; @@ -372,6 +408,13 @@ static int pwm_regulator_probe(struct platform_device *pdev) if (ret) return ret; + ret = pwm_regulator_init_boot_on(pdev, drvdata, init_data); + if (ret) { + dev_err(&pdev->dev, "Failed to apply boot_on settings: %d\n", + ret); + return ret; + } + regulator = devm_regulator_register(&pdev->dev, &drvdata->desc, &config); if (IS_ERR(regulator)) { |