diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-14 12:31:19 +0300 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-19 13:02:57 +0300 |
| commit | aaa3cc29a78e0db72762999d7ad1224d1cf3d45c (patch) | |
| tree | 2cde5c72bc109f0f224573d90f41c06c3674aef8 /drivers/pwm/pwm-dwc.c | |
| parent | 452be9421eda39cfa13c2ace430c940ec60995b7 (diff) | |
| download | linux-aaa3cc29a78e0db72762999d7ad1224d1cf3d45c.tar.xz | |
pwm: dwc: Prepare removing pwm_chip from driver data
This prepares the driver for further changes that will drop struct
pwm_chip chip from struct dwc_pwm. Use the pwm_chip as driver
data and return value of dwc_pwm_alloc() instead of the dwc_pwm to get
access to the pwm_chip in dwc_pwm_probe() and dwc_pwm_suspend() without
using dwc->chip.
Thanks to Raag Jadav for providing a hunk of this patch that Uwe missed
during creation of this patch.
Link: https://lore.kernel.org/r/008ce5ab84b8e3baa3e81ab6d36dbb0e4be5c319.1707900770.git.u.kleine-koenig@pengutronix.de
Link: https://lore.kernel.org/r/20240219033835.11369-2-raag.jadav@intel.com
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'drivers/pwm/pwm-dwc.c')
| -rw-r--r-- | drivers/pwm/pwm-dwc.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/pwm/pwm-dwc.c b/drivers/pwm/pwm-dwc.c index 9a1b156ead26..c0e586688e57 100644 --- a/drivers/pwm/pwm-dwc.c +++ b/drivers/pwm/pwm-dwc.c @@ -28,12 +28,14 @@ static int dwc_pwm_probe(struct pci_dev *pci, const struct pci_device_id *id) { struct device *dev = &pci->dev; + struct pwm_chip *chip; struct dwc_pwm *dwc; int ret; - dwc = dwc_pwm_alloc(dev); - if (!dwc) - return -ENOMEM; + chip = dwc_pwm_alloc(dev); + if (IS_ERR(chip)) + return PTR_ERR(chip); + dwc = to_dwc_pwm(chip); ret = pcim_enable_device(pci); if (ret) { @@ -55,7 +57,7 @@ static int dwc_pwm_probe(struct pci_dev *pci, const struct pci_device_id *id) return -ENOMEM; } - ret = devm_pwmchip_add(dev, &dwc->chip); + ret = devm_pwmchip_add(dev, chip); if (ret) return ret; @@ -73,13 +75,14 @@ static void dwc_pwm_remove(struct pci_dev *pci) static int dwc_pwm_suspend(struct device *dev) { - struct dwc_pwm *dwc = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); + struct dwc_pwm *dwc = to_dwc_pwm(chip); int i; for (i = 0; i < DWC_TIMERS_TOTAL; i++) { - if (dwc->chip.pwms[i].state.enabled) { + if (chip->pwms[i].state.enabled) { dev_err(dev, "PWM %u in use by consumer (%s)\n", - i, dwc->chip.pwms[i].label); + i, chip->pwms[i].label); return -EBUSY; } dwc->ctx[i].cnt = dwc_pwm_readl(dwc, DWC_TIM_LD_CNT(i)); @@ -92,7 +95,8 @@ static int dwc_pwm_suspend(struct device *dev) static int dwc_pwm_resume(struct device *dev) { - struct dwc_pwm *dwc = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); + struct dwc_pwm *dwc = to_dwc_pwm(chip); int i; for (i = 0; i < DWC_TIMERS_TOTAL; i++) { |