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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-13 10:51:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-13 10:51:39 -0700 |
| commit | aeb152910a7aecabde5c5f0477a08b397e94059c (patch) | |
| tree | 9509c6f14816048c1ae8f7d4b9ec8ee825c0d2f6 /drivers/pwm/pwm-stm32-lp.c | |
| parent | aa7d6513d68bad539142f9d6c3e2faa629bc27d8 (diff) | |
| parent | dd6c6d57ab61d496f6ff7d6ca38611062af142a1 (diff) | |
| download | lwn-aeb152910a7aecabde5c5f0477a08b397e94059c.tar.gz lwn-aeb152910a7aecabde5c5f0477a08b397e94059c.zip | |
Merge tag 'pwm/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm updates from Uwe Kleine-König:
"This contains the usual amount of driver and device tree changes.
Additionally there is a big rework of how pwm lowlevel drivers are
registered to prepare adding character device support.
Thanks to Dharma Balasubiramani, Dong Aisheng, Duje Mihanović, Jerome
Brunet, Raag Jadav and Rafał Miłecki for their contributions. And
sorry for those who still need some patience because I didn't manage
to empty my review queue"
* tag 'pwm/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (185 commits)
pwm: imx-tpm: fix probe crash due to access registers without clock
pwm: meson: generalize 4 inputs clock on meson8 pwm type
dt-bindings: pwm: amlogic: Add a new binding for meson8 pwm types
dt-bindings: pwm: amlogic: fix s4 bindings
pwm: dwc: simplify error handling
pwm: dwc: Add 16 channel support for Intel Elkhart Lake
pwm: dwc: drop redundant error check
staging: greybus: pwm: Make use of devm_pwmchip_alloc() function
staging: greybus: pwm: Rework how the number of PWM lines is determined
staging: greybus: pwm: Drop unused gb_connection_set_data()
staging: greybus: pwm: Rely on pwm framework to pass a valid hwpwm
staging: greybus: pwm: Make use of pwmchip_parent() accessor
staging: greybus: pwm: Change prototype of helpers to prepare further changes
leds: qcom-lpg: Make use of devm_pwmchip_alloc() function
drm/bridge: ti-sn65dsi86: Make use of devm_pwmchip_alloc() function
drm/bridge: ti-sn65dsi86: Make use of pwmchip_parent() accessor
gpio: mvebu: Make use of devm_pwmchip_alloc() function
pwm: xilinx: Make use of devm_pwmchip_alloc() function
pwm: xilinx: Prepare removing pwm_chip from driver data
pwm: vt8500: Make use of devm_pwmchip_alloc() function
...
Diffstat (limited to 'drivers/pwm/pwm-stm32-lp.c')
| -rw-r--r-- | drivers/pwm/pwm-stm32-lp.c | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c index 439068f3eca1..989731256f50 100644 --- a/drivers/pwm/pwm-stm32-lp.c +++ b/drivers/pwm/pwm-stm32-lp.c @@ -18,14 +18,13 @@ #include <linux/pwm.h> struct stm32_pwm_lp { - struct pwm_chip chip; struct clk *clk; struct regmap *regmap; }; static inline struct stm32_pwm_lp *to_stm32_pwm_lp(struct pwm_chip *chip) { - return container_of(chip, struct stm32_pwm_lp, chip); + return pwmchip_get_drvdata(chip); } /* STM32 Low-Power Timer is preceded by a configurable power-of-2 prescaler */ @@ -61,7 +60,7 @@ static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm, do_div(div, NSEC_PER_SEC); if (!div) { /* Clock is too slow to achieve requested period. */ - dev_dbg(priv->chip.dev, "Can't reach %llu ns\n", state->period); + dev_dbg(pwmchip_parent(chip), "Can't reach %llu ns\n", state->period); return -EINVAL; } @@ -69,7 +68,7 @@ static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm, while (div > STM32_LPTIM_MAX_ARR) { presc++; if ((1 << presc) > STM32_LPTIM_MAX_PRESCALER) { - dev_err(priv->chip.dev, "max prescaler exceeded\n"); + dev_err(pwmchip_parent(chip), "max prescaler exceeded\n"); return -EINVAL; } div = prd >> presc; @@ -130,7 +129,7 @@ static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm, (val & STM32_LPTIM_CMPOK_ARROK) == STM32_LPTIM_CMPOK_ARROK, 100, 1000); if (ret) { - dev_err(priv->chip.dev, "ARR/CMP registers write issue\n"); + dev_err(pwmchip_parent(chip), "ARR/CMP registers write issue\n"); goto err; } ret = regmap_write(priv->regmap, STM32_LPTIM_ICR, @@ -197,36 +196,36 @@ static int stm32_pwm_lp_probe(struct platform_device *pdev) { struct stm32_lptimer *ddata = dev_get_drvdata(pdev->dev.parent); struct stm32_pwm_lp *priv; + struct pwm_chip *chip; int ret; - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; + chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*priv)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + priv = to_stm32_pwm_lp(chip); priv->regmap = ddata->regmap; priv->clk = ddata->clk; - priv->chip.dev = &pdev->dev; - priv->chip.ops = &stm32_pwm_lp_ops; - priv->chip.npwm = 1; + chip->ops = &stm32_pwm_lp_ops; - ret = devm_pwmchip_add(&pdev->dev, &priv->chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret < 0) return ret; - platform_set_drvdata(pdev, priv); + platform_set_drvdata(pdev, chip); return 0; } static int stm32_pwm_lp_suspend(struct device *dev) { - struct stm32_pwm_lp *priv = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); struct pwm_state state; - pwm_get_state(&priv->chip.pwms[0], &state); + pwm_get_state(&chip->pwms[0], &state); if (state.enabled) { dev_err(dev, "The consumer didn't stop us (%s)\n", - priv->chip.pwms[0].label); + chip->pwms[0].label); return -EBUSY; } |