diff --git a/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml b/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml new file mode 100644 index 000000000000..142157bff0cd --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/apple,s5l-fpwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple FPWM controller + +maintainers: + - asahi@lists.linux.dev + - Sasha Finkelstein + +description: PWM controller used for keyboard backlight on ARM Macs + +properties: + compatible: + items: + - enum: + - apple,t8103-fpwm + - apple,t6000-fpwm + - apple,t8112-fpwm + - const: apple,s5l-fpwm + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + power-domains: + maxItems: 1 + + "#pwm-cells": + const: 2 + +required: + - compatible + - reg + - clocks + +additionalProperties: false + +examples: + - | + pwm@235044000 { + compatible = "apple,t8103-fpwm", "apple,s5l-fpwm"; + reg = <0x35044000 0x4000>; + power-domains = <&ps_fpwm1>; + clocks = <&clkref>; + #pwm-cells = <2>; + }; diff --git a/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml b/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml index dbc974bff9e9..8e176ba7a525 100644 --- a/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml @@ -22,6 +22,7 @@ properties: - mediatek,mt7623-pwm - mediatek,mt7628-pwm - mediatek,mt7629-pwm + - mediatek,mt7986-pwm - mediatek,mt8183-pwm - mediatek,mt8365-pwm - mediatek,mt8516-pwm diff --git a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml new file mode 100644 index 000000000000..527864a4d855 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/pwm-amlogic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic PWM + +maintainers: + - Heiner Kallweit + +allOf: + - $ref: pwm.yaml# + +properties: + compatible: + oneOf: + - enum: + - amlogic,meson8b-pwm + - amlogic,meson-gxbb-pwm + - amlogic,meson-gxbb-ao-pwm + - amlogic,meson-axg-ee-pwm + - amlogic,meson-axg-ao-pwm + - amlogic,meson-g12a-ee-pwm + - amlogic,meson-g12a-ao-pwm-ab + - amlogic,meson-g12a-ao-pwm-cd + - amlogic,meson-s4-pwm + - items: + - const: amlogic,meson-gx-pwm + - const: amlogic,meson-gxbb-pwm + - items: + - const: amlogic,meson-gx-ao-pwm + - const: amlogic,meson-gxbb-ao-pwm + - items: + - const: amlogic,meson8-pwm + - const: amlogic,meson8b-pwm + + reg: + maxItems: 1 + + clocks: + minItems: 1 + maxItems: 2 + + clock-names: + oneOf: + - items: + - enum: [clkin0, clkin1] + - items: + - const: clkin0 + - const: clkin1 + + "#pwm-cells": + const: 3 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pwm@8550 { + compatible = "amlogic,meson-gxbb-pwm"; + reg = <0x08550 0x10>; + clocks = <&xtal>, <&xtal>; + clock-names = "clkin0", "clkin1"; + #pwm-cells = <3>; + }; diff --git a/Documentation/devicetree/bindings/pwm/pwm-meson.txt b/Documentation/devicetree/bindings/pwm/pwm-meson.txt deleted file mode 100644 index bd02b0a1496f..000000000000 --- a/Documentation/devicetree/bindings/pwm/pwm-meson.txt +++ /dev/null @@ -1,29 +0,0 @@ -Amlogic Meson PWM Controller -============================ - -Required properties: -- compatible: Shall contain "amlogic,meson8b-pwm" - or "amlogic,meson-gxbb-pwm" - or "amlogic,meson-gxbb-ao-pwm" - or "amlogic,meson-axg-ee-pwm" - or "amlogic,meson-axg-ao-pwm" - or "amlogic,meson-g12a-ee-pwm" - or "amlogic,meson-g12a-ao-pwm-ab" - or "amlogic,meson-g12a-ao-pwm-cd" -- #pwm-cells: Should be 3. See pwm.yaml in this directory for a description of - the cells format. - -Optional properties: -- clocks: Could contain one or two parents clocks phandle for each of the two - PWM channels. -- clock-names: Could contain at least the "clkin0" and/or "clkin1" names. - -Example: - - pwm_ab: pwm@8550 { - compatible = "amlogic,meson-gxbb-pwm"; - reg = <0x0 0x08550 0x0 0x10>; - #pwm-cells = <3>; - clocks = <&xtal>, <&xtal>; - clock-names = "clkin0", "clkin1"; - } diff --git a/Documentation/driver-api/pwm.rst b/Documentation/driver-api/pwm.rst index 8c71a2055d27..3fdc95f7a1d1 100644 --- a/Documentation/driver-api/pwm.rst +++ b/Documentation/driver-api/pwm.rst @@ -35,12 +35,9 @@ consumers to providers, as given in the following example:: Using PWMs ---------- -Legacy users can request a PWM device using pwm_request() and free it -after usage with pwm_free(). - -New users should use the pwm_get() function and pass to it the consumer -device or a consumer name. pwm_put() is used to free the PWM device. Managed -variants of the getter, devm_pwm_get() and devm_fwnode_pwm_get(), also exist. +Consumers use the pwm_get() function and pass to it the consumer device or a +consumer name. pwm_put() is used to free the PWM device. Managed variants of +the getter, devm_pwm_get() and devm_fwnode_pwm_get(), also exist. After being requested, a PWM has to be configured using:: @@ -165,8 +162,8 @@ consumers should implement it as described in the "Using PWMs" section. Locking ------- -The PWM core list manipulations are protected by a mutex, so pwm_request() -and pwm_free() may not be called from an atomic context. Currently the +The PWM core list manipulations are protected by a mutex, so pwm_get() +and pwm_put() may not be called from an atomic context. Currently the PWM core does not enforce any locking to pwm_enable(), pwm_disable() and pwm_config(), so the calling context is currently driver specific. This is an issue derived from the former barebone API and should be fixed soon. diff --git a/MAINTAINERS b/MAINTAINERS index 61b7465d366b..c0cde28c62c6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1961,6 +1961,7 @@ F: Documentation/devicetree/bindings/nvmem/apple,efuses.yaml F: Documentation/devicetree/bindings/pci/apple,pcie.yaml F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml F: Documentation/devicetree/bindings/power/apple* +F: Documentation/devicetree/bindings/pwm/pwm-apple.yaml F: Documentation/devicetree/bindings/watchdog/apple,wdt.yaml F: arch/arm64/boot/dts/apple/ F: drivers/bluetooth/hci_bcm4377.c @@ -1976,6 +1977,7 @@ F: drivers/mailbox/apple-mailbox.c F: drivers/nvme/host/apple.c F: drivers/nvmem/apple-efuses.c F: drivers/pinctrl/pinctrl-apple-gpio.c +F: drivers/pwm/pwm-apple.c F: drivers/soc/apple/* F: drivers/watchdog/apple_wdt.c F: include/dt-bindings/interrupt-controller/apple-aic.h diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index dae023d783a2..8df861b1f4a3 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -51,6 +51,18 @@ config PWM_AB8500 To compile this driver as a module, choose M here: the module will be called pwm-ab8500. +config PWM_APPLE + tristate "Apple SoC PWM support" + depends on ARCH_APPLE || COMPILE_TEST + help + Generic PWM framework driver for PWM controller present on + Apple SoCs + + Say Y here if you have an ARM Apple laptop, otherwise say N + + To compile this driver as a module, choose M here: the module + will be called pwm-apple. + config PWM_ATMEL tristate "Atmel PWM support" depends on ARCH_AT91 || COMPILE_TEST diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile index 7bf1a29f02b8..19899b912e00 100644 --- a/drivers/pwm/Makefile +++ b/drivers/pwm/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_PWM) += core.o obj-$(CONFIG_PWM_SYSFS) += sysfs.o obj-$(CONFIG_PWM_AB8500) += pwm-ab8500.o +obj-$(CONFIG_PWM_APPLE) += pwm-apple.o obj-$(CONFIG_PWM_ATMEL) += pwm-atmel.o obj-$(CONFIG_PWM_ATMEL_HLCDC_PWM) += pwm-atmel-hlcdc.o obj-$(CONFIG_PWM_ATMEL_TCB) += pwm-atmel-tcb.o diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 474725714a05..3dacceaef4a9 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -28,17 +28,11 @@ static DEFINE_MUTEX(pwm_lookup_lock); static LIST_HEAD(pwm_lookup_list); -/* protects access to pwm_chips, allocated_pwms, and pwm_tree */ +/* protects access to pwm_chips and allocated_pwms */ static DEFINE_MUTEX(pwm_lock); static LIST_HEAD(pwm_chips); static DECLARE_BITMAP(allocated_pwms, MAX_PWMS); -static RADIX_TREE(pwm_tree, GFP_KERNEL); - -static struct pwm_device *pwm_to_device(unsigned int pwm) -{ - return radix_tree_lookup(&pwm_tree, pwm); -} /* Called with pwm_lock held */ static int alloc_pwms(unsigned int count) @@ -59,14 +53,6 @@ static int alloc_pwms(unsigned int count) /* Called with pwm_lock held */ static void free_pwms(struct pwm_chip *chip) { - unsigned int i; - - for (i = 0; i < chip->npwm; i++) { - struct pwm_device *pwm = &chip->pwms[i]; - - radix_tree_delete(&pwm_tree, pwm->pwm); - } - bitmap_clear(allocated_pwms, chip->base, chip->npwm); kfree(chip->pwms); @@ -307,8 +293,6 @@ int pwmchip_add(struct pwm_chip *chip) pwm->chip = chip; pwm->pwm = chip->base + i; pwm->hwpwm = i; - - radix_tree_insert(&pwm_tree, pwm->pwm, pwm); } list_add(&chip->list, &pwm_chips); @@ -369,43 +353,6 @@ int devm_pwmchip_add(struct device *dev, struct pwm_chip *chip) } EXPORT_SYMBOL_GPL(devm_pwmchip_add); -/** - * pwm_request() - request a PWM device - * @pwm: global PWM device index - * @label: PWM device label - * - * This function is deprecated, use pwm_get() instead. - * - * Returns: A pointer to a PWM device or an ERR_PTR()-encoded error code on - * failure. - */ -struct pwm_device *pwm_request(int pwm, const char *label) -{ - struct pwm_device *dev; - int err; - - if (pwm < 0 || pwm >= MAX_PWMS) - return ERR_PTR(-EINVAL); - - mutex_lock(&pwm_lock); - - dev = pwm_to_device(pwm); - if (!dev) { - dev = ERR_PTR(-EPROBE_DEFER); - goto out; - } - - err = pwm_device_request(dev, label); - if (err < 0) - dev = ERR_PTR(err); - -out: - mutex_unlock(&pwm_lock); - - return dev; -} -EXPORT_SYMBOL_GPL(pwm_request); - /** * pwm_request_from_chip() - request a PWM device relative to a PWM chip * @chip: PWM chip @@ -438,18 +385,6 @@ struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip, } EXPORT_SYMBOL_GPL(pwm_request_from_chip); -/** - * pwm_free() - free a PWM device - * @pwm: PWM device - * - * This function is deprecated, use pwm_put() instead. - */ -void pwm_free(struct pwm_device *pwm) -{ - pwm_put(pwm); -} -EXPORT_SYMBOL_GPL(pwm_free); - static void pwm_apply_state_debug(struct pwm_device *pwm, const struct pwm_state *state) { @@ -790,7 +725,7 @@ static struct pwm_device *of_pwm_get(struct device *dev, struct device_node *np, dl = pwm_device_link_add(dev, pwm); if (IS_ERR(dl)) { /* of_xlate ended up calling pwm_request_from_chip() */ - pwm_free(pwm); + pwm_put(pwm); pwm = ERR_CAST(dl); goto put; } @@ -1014,7 +949,7 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id) dl = pwm_device_link_add(dev, pwm); if (IS_ERR(dl)) { - pwm_free(pwm); + pwm_put(pwm); return ERR_CAST(dl); } diff --git a/drivers/pwm/pwm-apple.c b/drivers/pwm/pwm-apple.c new file mode 100644 index 000000000000..a38a62edd713 --- /dev/null +++ b/drivers/pwm/pwm-apple.c @@ -0,0 +1,159 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Driver for the Apple SoC PWM controller + * + * Copyright The Asahi Linux Contributors + * + * Limitations: + * - The writes to cycle registers are shadowed until a write to + * the control register. + * - If both OFF_CYCLES and ON_CYCLES are set to 0, the output + * is a constant off signal. + * - When APPLE_PWM_CTRL is set to 0, the output is constant low + */ + +#include +#include +#include +#include +#include +#include + +#define APPLE_PWM_CTRL 0x00 +#define APPLE_PWM_ON_CYCLES 0x1c +#define APPLE_PWM_OFF_CYCLES 0x18 + +#define APPLE_PWM_CTRL_ENABLE BIT(0) +#define APPLE_PWM_CTRL_MODE BIT(2) +#define APPLE_PWM_CTRL_UPDATE BIT(5) +#define APPLE_PWM_CTRL_TRIGGER BIT(9) +#define APPLE_PWM_CTRL_INVERT BIT(10) +#define APPLE_PWM_CTRL_OUTPUT_ENABLE BIT(14) + +struct apple_pwm { + struct pwm_chip chip; + void __iomem *base; + u64 clkrate; +}; + +static inline struct apple_pwm *to_apple_pwm(struct pwm_chip *chip) +{ + return container_of(chip, struct apple_pwm, chip); +} + +static int apple_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, + const struct pwm_state *state) +{ + struct apple_pwm *fpwm; + + if (state->polarity == PWM_POLARITY_INVERSED) + return -EINVAL; + + fpwm = to_apple_pwm(chip); + if (state->enabled) { + u64 on_cycles, off_cycles; + + on_cycles = mul_u64_u64_div_u64(fpwm->clkrate, + state->duty_cycle, NSEC_PER_SEC); + if (on_cycles > 0xFFFFFFFF) + on_cycles = 0xFFFFFFFF; + + off_cycles = mul_u64_u64_div_u64(fpwm->clkrate, + state->period, NSEC_PER_SEC) - on_cycles; + if (off_cycles > 0xFFFFFFFF) + off_cycles = 0xFFFFFFFF; + + writel(on_cycles, fpwm->base + APPLE_PWM_ON_CYCLES); + writel(off_cycles, fpwm->base + APPLE_PWM_OFF_CYCLES); + writel(APPLE_PWM_CTRL_ENABLE | APPLE_PWM_CTRL_OUTPUT_ENABLE | APPLE_PWM_CTRL_UPDATE, + fpwm->base + APPLE_PWM_CTRL); + } else { + writel(0, fpwm->base + APPLE_PWM_CTRL); + } + return 0; +} + +static int apple_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm, + struct pwm_state *state) +{ + struct apple_pwm *fpwm; + u32 on_cycles, off_cycles, ctrl; + + fpwm = to_apple_pwm(chip); + + ctrl = readl(fpwm->base + APPLE_PWM_CTRL); + on_cycles = readl(fpwm->base + APPLE_PWM_ON_CYCLES); + off_cycles = readl(fpwm->base + APPLE_PWM_OFF_CYCLES); + + state->enabled = (ctrl & APPLE_PWM_CTRL_ENABLE) && (ctrl & APPLE_PWM_CTRL_OUTPUT_ENABLE); + state->polarity = PWM_POLARITY_NORMAL; + // on_cycles + off_cycles is 33 bits, NSEC_PER_SEC is 30, there is no overflow + state->duty_cycle = DIV64_U64_ROUND_UP((u64)on_cycles * NSEC_PER_SEC, fpwm->clkrate); + state->period = DIV64_U64_ROUND_UP(((u64)off_cycles + (u64)on_cycles) * + NSEC_PER_SEC, fpwm->clkrate); + + return 0; +} + +static const struct pwm_ops apple_pwm_ops = { + .apply = apple_pwm_apply, + .get_state = apple_pwm_get_state, + .owner = THIS_MODULE, +}; + +static int apple_pwm_probe(struct platform_device *pdev) +{ + struct apple_pwm *fpwm; + struct clk *clk; + int ret; + + fpwm = devm_kzalloc(&pdev->dev, sizeof(*fpwm), GFP_KERNEL); + if (!fpwm) + return -ENOMEM; + + fpwm->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(fpwm->base)) + return PTR_ERR(fpwm->base); + + clk = devm_clk_get_enabled(&pdev->dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(clk), "unable to get the clock"); + + /* + * Uses the 24MHz system clock on all existing devices, can only + * happen if the device tree is broken + * + * This check is done to prevent an overflow in .apply + */ + fpwm->clkrate = clk_get_rate(clk); + if (fpwm->clkrate > NSEC_PER_SEC) + return dev_err_probe(&pdev->dev, -EINVAL, "pwm clock out of range"); + + fpwm->chip.dev = &pdev->dev; + fpwm->chip.npwm = 1; + fpwm->chip.ops = &apple_pwm_ops; + + ret = devm_pwmchip_add(&pdev->dev, &fpwm->chip); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, "unable to add pwm chip"); + + return 0; +} + +static const struct of_device_id apple_pwm_of_match[] = { + { .compatible = "apple,s5l-fpwm" }, + {} +}; +MODULE_DEVICE_TABLE(of, apple_pwm_of_match); + +static struct platform_driver apple_pwm_driver = { + .probe = apple_pwm_probe, + .driver = { + .name = "apple-pwm", + .of_match_table = apple_pwm_of_match, + }, +}; +module_platform_driver(apple_pwm_driver); + +MODULE_DESCRIPTION("Apple SoC PWM driver"); +MODULE_LICENSE("Dual MIT/GPL"); diff --git a/drivers/pwm/pwm-atmel-hlcdc.c b/drivers/pwm/pwm-atmel-hlcdc.c index a43b2babc809..96a709a9d49a 100644 --- a/drivers/pwm/pwm-atmel-hlcdc.c +++ b/drivers/pwm/pwm-atmel-hlcdc.c @@ -278,15 +278,13 @@ static int atmel_hlcdc_pwm_probe(struct platform_device *pdev) return 0; } -static int atmel_hlcdc_pwm_remove(struct platform_device *pdev) +static void atmel_hlcdc_pwm_remove(struct platform_device *pdev) { struct atmel_hlcdc_pwm *chip = platform_get_drvdata(pdev); pwmchip_remove(&chip->chip); clk_disable_unprepare(chip->hlcdc->periph_clk); - - return 0; } static const struct of_device_id atmel_hlcdc_pwm_dt_ids[] = { @@ -301,7 +299,7 @@ static struct platform_driver atmel_hlcdc_pwm_driver = { .pm = &atmel_hlcdc_pwm_pm_ops, }, .probe = atmel_hlcdc_pwm_probe, - .remove = atmel_hlcdc_pwm_remove, + .remove_new = atmel_hlcdc_pwm_remove, }; module_platform_driver(atmel_hlcdc_pwm_driver); diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c index 2837b4ce8053..4a116dc44f6e 100644 --- a/drivers/pwm/pwm-atmel-tcb.c +++ b/drivers/pwm/pwm-atmel-tcb.c @@ -500,7 +500,7 @@ static int atmel_tcb_pwm_probe(struct platform_device *pdev) return err; } -static int atmel_tcb_pwm_remove(struct platform_device *pdev) +static void atmel_tcb_pwm_remove(struct platform_device *pdev) { struct atmel_tcb_pwm_chip *tcbpwm = platform_get_drvdata(pdev); @@ -509,8 +509,6 @@ static int atmel_tcb_pwm_remove(struct platform_device *pdev) clk_disable_unprepare(tcbpwm->slow_clk); clk_put(tcbpwm->slow_clk); clk_put(tcbpwm->clk); - - return 0; } static const struct of_device_id atmel_tcb_pwm_dt_ids[] = { @@ -564,7 +562,7 @@ static struct platform_driver atmel_tcb_pwm_driver = { .pm = &atmel_tcb_pwm_pm_ops, }, .probe = atmel_tcb_pwm_probe, - .remove = atmel_tcb_pwm_remove, + .remove_new = atmel_tcb_pwm_remove, }; module_platform_driver(atmel_tcb_pwm_driver); diff --git a/drivers/pwm/pwm-atmel.c b/drivers/pwm/pwm-atmel.c index cdbc23649032..0c567d9623cd 100644 --- a/drivers/pwm/pwm-atmel.c +++ b/drivers/pwm/pwm-atmel.c @@ -511,15 +511,13 @@ static int atmel_pwm_probe(struct platform_device *pdev) return ret; } -static int atmel_pwm_remove(struct platform_device *pdev) +static void atmel_pwm_remove(struct platform_device *pdev) { struct atmel_pwm_chip *atmel_pwm = platform_get_drvdata(pdev); pwmchip_remove(&atmel_pwm->chip); clk_unprepare(atmel_pwm->clk); - - return 0; } static struct platform_driver atmel_pwm_driver = { @@ -528,7 +526,7 @@ static struct platform_driver atmel_pwm_driver = { .of_match_table = of_match_ptr(atmel_pwm_dt_ids), }, .probe = atmel_pwm_probe, - .remove = atmel_pwm_remove, + .remove_new = atmel_pwm_remove, }; module_platform_driver(atmel_pwm_driver); diff --git a/drivers/pwm/pwm-bcm-iproc.c b/drivers/pwm/pwm-bcm-iproc.c index 97ec131eb7c1..7d70b6f186a6 100644 --- a/drivers/pwm/pwm-bcm-iproc.c +++ b/drivers/pwm/pwm-bcm-iproc.c @@ -239,15 +239,13 @@ static int iproc_pwmc_probe(struct platform_device *pdev) return ret; } -static int iproc_pwmc_remove(struct platform_device *pdev) +static void iproc_pwmc_remove(struct platform_device *pdev) { struct iproc_pwmc *ip = platform_get_drvdata(pdev); pwmchip_remove(&ip->chip); clk_disable_unprepare(ip->clk); - - return 0; } static const struct of_device_id bcm_iproc_pwmc_dt[] = { @@ -262,7 +260,7 @@ static struct platform_driver iproc_pwmc_driver = { .of_match_table = bcm_iproc_pwmc_dt, }, .probe = iproc_pwmc_probe, - .remove = iproc_pwmc_remove, + .remove_new = iproc_pwmc_remove, }; module_platform_driver(iproc_pwmc_driver); diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c index 50b8594be31d..bdfc2a5ec0d6 100644 --- a/drivers/pwm/pwm-bcm2835.c +++ b/drivers/pwm/pwm-bcm2835.c @@ -173,15 +173,13 @@ static int bcm2835_pwm_probe(struct platform_device *pdev) return ret; } -static int bcm2835_pwm_remove(struct platform_device *pdev) +static void bcm2835_pwm_remove(struct platform_device *pdev) { struct bcm2835_pwm *pc = platform_get_drvdata(pdev); pwmchip_remove(&pc->chip); clk_disable_unprepare(pc->clk); - - return 0; } static const struct of_device_id bcm2835_pwm_of_match[] = { @@ -196,7 +194,7 @@ static struct platform_driver bcm2835_pwm_driver = { .of_match_table = bcm2835_pwm_of_match, }, .probe = bcm2835_pwm_probe, - .remove = bcm2835_pwm_remove, + .remove_new = bcm2835_pwm_remove, }; module_platform_driver(bcm2835_pwm_driver); diff --git a/drivers/pwm/pwm-berlin.c b/drivers/pwm/pwm-berlin.c index e157273fd2f7..0c5992a046b2 100644 --- a/drivers/pwm/pwm-berlin.c +++ b/drivers/pwm/pwm-berlin.c @@ -250,15 +250,13 @@ static int berlin_pwm_probe(struct platform_device *pdev) return 0; } -static int berlin_pwm_remove(struct platform_device *pdev) +static void berlin_pwm_remove(struct platform_device *pdev) { struct berlin_pwm_chip *bpc = platform_get_drvdata(pdev); pwmchip_remove(&bpc->chip); clk_disable_unprepare(bpc->clk); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -317,7 +315,7 @@ static SIMPLE_DEV_PM_OPS(berlin_pwm_pm_ops, berlin_pwm_suspend, static struct platform_driver berlin_pwm_driver = { .probe = berlin_pwm_probe, - .remove = berlin_pwm_remove, + .remove_new = berlin_pwm_remove, .driver = { .name = "berlin-pwm", .of_match_table = berlin_pwm_match, diff --git a/drivers/pwm/pwm-brcmstb.c b/drivers/pwm/pwm-brcmstb.c index 3db3f96edf78..a3faa9a3de7c 100644 --- a/drivers/pwm/pwm-brcmstb.c +++ b/drivers/pwm/pwm-brcmstb.c @@ -275,14 +275,12 @@ static int brcmstb_pwm_probe(struct platform_device *pdev) return ret; } -static int brcmstb_pwm_remove(struct platform_device *pdev) +static void brcmstb_pwm_remove(struct platform_device *pdev) { struct brcmstb_pwm *p = platform_get_drvdata(pdev); pwmchip_remove(&p->chip); clk_disable_unprepare(p->clk); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -310,7 +308,7 @@ static SIMPLE_DEV_PM_OPS(brcmstb_pwm_pm_ops, brcmstb_pwm_suspend, static struct platform_driver brcmstb_pwm_driver = { .probe = brcmstb_pwm_probe, - .remove = brcmstb_pwm_remove, + .remove_new = brcmstb_pwm_remove, .driver = { .name = "pwm-brcmstb", .of_match_table = brcmstb_pwm_of_match, diff --git a/drivers/pwm/pwm-clk.c b/drivers/pwm/pwm-clk.c index c2a503d684a7..f1da99881adf 100644 --- a/drivers/pwm/pwm-clk.c +++ b/drivers/pwm/pwm-clk.c @@ -112,7 +112,7 @@ static int pwm_clk_probe(struct platform_device *pdev) return 0; } -static int pwm_clk_remove(struct platform_device *pdev) +static void pwm_clk_remove(struct platform_device *pdev) { struct pwm_clk_chip *pcchip = platform_get_drvdata(pdev); @@ -122,8 +122,6 @@ static int pwm_clk_remove(struct platform_device *pdev) clk_disable(pcchip->clk); clk_unprepare(pcchip->clk); - - return 0; } static const struct of_device_id pwm_clk_dt_ids[] = { @@ -138,7 +136,7 @@ static struct platform_driver pwm_clk_driver = { .of_match_table = pwm_clk_dt_ids, }, .probe = pwm_clk_probe, - .remove = pwm_clk_remove, + .remove_new = pwm_clk_remove, }; module_platform_driver(pwm_clk_driver); diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c index ad18b0ebe3f1..74e863aa1d8d 100644 --- a/drivers/pwm/pwm-cros-ec.c +++ b/drivers/pwm/pwm-cros-ec.c @@ -329,14 +329,12 @@ static int cros_ec_pwm_probe(struct platform_device *pdev) return ret; } -static int cros_ec_pwm_remove(struct platform_device *dev) +static void cros_ec_pwm_remove(struct platform_device *dev) { struct cros_ec_pwm_device *ec_pwm = platform_get_drvdata(dev); struct pwm_chip *chip = &ec_pwm->chip; pwmchip_remove(chip); - - return 0; } #ifdef CONFIG_OF @@ -350,7 +348,7 @@ MODULE_DEVICE_TABLE(of, cros_ec_pwm_of_match); static struct platform_driver cros_ec_pwm_driver = { .probe = cros_ec_pwm_probe, - .remove = cros_ec_pwm_remove, + .remove_new = cros_ec_pwm_remove, .driver = { .name = "cros-ec-pwm", .of_match_table = of_match_ptr(cros_ec_pwm_of_match), diff --git a/drivers/pwm/pwm-hibvt.c b/drivers/pwm/pwm-hibvt.c index 1b9274c5ad87..b95df1a96127 100644 --- a/drivers/pwm/pwm-hibvt.c +++ b/drivers/pwm/pwm-hibvt.c @@ -245,7 +245,7 @@ static int hibvt_pwm_probe(struct platform_device *pdev) return 0; } -static int hibvt_pwm_remove(struct platform_device *pdev) +static void hibvt_pwm_remove(struct platform_device *pdev) { struct hibvt_pwm_chip *pwm_chip; @@ -258,8 +258,6 @@ static int hibvt_pwm_remove(struct platform_device *pdev) reset_control_deassert(pwm_chip->rstc); clk_disable_unprepare(pwm_chip->clk); - - return 0; } static const struct of_device_id hibvt_pwm_of_match[] = { @@ -281,7 +279,7 @@ static struct platform_driver hibvt_pwm_driver = { .of_match_table = hibvt_pwm_of_match, }, .probe = hibvt_pwm_probe, - .remove = hibvt_pwm_remove, + .remove_new = hibvt_pwm_remove, }; module_platform_driver(hibvt_pwm_driver); diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c index 89362afe3c91..326af85888e7 100644 --- a/drivers/pwm/pwm-img.c +++ b/drivers/pwm/pwm-img.c @@ -343,7 +343,7 @@ static int img_pwm_probe(struct platform_device *pdev) return ret; } -static int img_pwm_remove(struct platform_device *pdev) +static void img_pwm_remove(struct platform_device *pdev) { struct img_pwm_chip *imgchip = platform_get_drvdata(pdev); @@ -352,8 +352,6 @@ static int img_pwm_remove(struct platform_device *pdev) img_pwm_runtime_suspend(&pdev->dev); pwmchip_remove(&imgchip->chip); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -423,7 +421,7 @@ static struct platform_driver img_pwm_driver = { .of_match_table = img_pwm_of_match, }, .probe = img_pwm_probe, - .remove = img_pwm_remove, + .remove_new = img_pwm_remove, }; module_platform_driver(img_pwm_driver); diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c index ed1aad96fff0..5e2b452ee5f2 100644 --- a/drivers/pwm/pwm-imx-tpm.c +++ b/drivers/pwm/pwm-imx-tpm.c @@ -381,15 +381,13 @@ static int pwm_imx_tpm_probe(struct platform_device *pdev) return ret; } -static int pwm_imx_tpm_remove(struct platform_device *pdev) +static void pwm_imx_tpm_remove(struct platform_device *pdev) { struct imx_tpm_pwm_chip *tpm = platform_get_drvdata(pdev); pwmchip_remove(&tpm->chip); clk_disable_unprepare(tpm->clk); - - return 0; } static int __maybe_unused pwm_imx_tpm_suspend(struct device *dev) @@ -432,7 +430,7 @@ static struct platform_driver imx_tpm_pwm_driver = { .pm = &imx_tpm_pwm_pm, }, .probe = pwm_imx_tpm_probe, - .remove = pwm_imx_tpm_remove, + .remove_new = pwm_imx_tpm_remove, }; module_platform_driver(imx_tpm_pwm_driver); diff --git a/drivers/pwm/pwm-lpc18xx-sct.c b/drivers/pwm/pwm-lpc18xx-sct.c index 378e1df944dc..b9bf5b366f4b 100644 --- a/drivers/pwm/pwm-lpc18xx-sct.c +++ b/drivers/pwm/pwm-lpc18xx-sct.c @@ -449,7 +449,7 @@ static int lpc18xx_pwm_probe(struct platform_device *pdev) return ret; } -static int lpc18xx_pwm_remove(struct platform_device *pdev) +static void lpc18xx_pwm_remove(struct platform_device *pdev) { struct lpc18xx_pwm_chip *lpc18xx_pwm = platform_get_drvdata(pdev); u32 val; @@ -461,8 +461,6 @@ static int lpc18xx_pwm_remove(struct platform_device *pdev) val | LPC18XX_PWM_CTRL_HALT); clk_disable_unprepare(lpc18xx_pwm->pwm_clk); - - return 0; } static struct platform_driver lpc18xx_pwm_driver = { @@ -471,7 +469,7 @@ static struct platform_driver lpc18xx_pwm_driver = { .of_match_table = lpc18xx_pwm_of_match, }, .probe = lpc18xx_pwm_probe, - .remove = lpc18xx_pwm_remove, + .remove_new = lpc18xx_pwm_remove, }; module_platform_driver(lpc18xx_pwm_driver); diff --git a/drivers/pwm/pwm-lpss-platform.c b/drivers/pwm/pwm-lpss-platform.c index f350607e28bd..319809aac2c4 100644 --- a/drivers/pwm/pwm-lpss-platform.c +++ b/drivers/pwm/pwm-lpss-platform.c @@ -62,10 +62,9 @@ static int pwm_lpss_probe_platform(struct platform_device *pdev) return 0; } -static int pwm_lpss_remove_platform(struct platform_device *pdev) +static void pwm_lpss_remove_platform(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); - return 0; } static const struct acpi_device_id pwm_lpss_acpi_match[] = { @@ -83,7 +82,7 @@ static struct platform_driver pwm_lpss_driver_platform = { .acpi_match_table = pwm_lpss_acpi_match, }, .probe = pwm_lpss_probe_platform, - .remove = pwm_lpss_remove_platform, + .remove_new = pwm_lpss_remove_platform, }; module_platform_driver(pwm_lpss_driver_platform); diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index 5cd7b90872c6..5732300eb004 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -418,7 +418,7 @@ static const struct meson_pwm_data pwm_axg_ee_data = { }; static const char * const pwm_axg_ao_parent_names[] = { - "aoclk81", "xtal", "fclk_div4", "fclk_div5" + "xtal", "axg_ao_clk81", "fclk_div4", "fclk_div5" }; static const struct meson_pwm_data pwm_axg_ao_data = { @@ -427,7 +427,7 @@ static const struct meson_pwm_data pwm_axg_ao_data = { }; static const char * const pwm_g12a_ao_ab_parent_names[] = { - "xtal", "aoclk81", "fclk_div4", "fclk_div5" + "xtal", "g12a_ao_clk81", "fclk_div4", "fclk_div5" }; static const struct meson_pwm_data pwm_g12a_ao_ab_data = { @@ -436,7 +436,7 @@ static const struct meson_pwm_data pwm_g12a_ao_ab_data = { }; static const char * const pwm_g12a_ao_cd_parent_names[] = { - "xtal", "aoclk81", + "xtal", "g12a_ao_clk81", }; static const struct meson_pwm_data pwm_g12a_ao_cd_data = { diff --git a/drivers/pwm/pwm-mtk-disp.c b/drivers/pwm/pwm-mtk-disp.c index 692a06121b28..79e321e96f56 100644 --- a/drivers/pwm/pwm-mtk-disp.c +++ b/drivers/pwm/pwm-mtk-disp.c @@ -138,6 +138,19 @@ static int mtk_disp_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, high_width = mul_u64_u64_div_u64(state->duty_cycle, rate, div); value = period | (high_width << PWM_HIGH_WIDTH_SHIFT); + if (mdp->data->bls_debug && !mdp->data->has_commit) { + /* + * For MT2701, disable double buffer before writing register + * and select manual mode and use PWM_PERIOD/PWM_HIGH_WIDTH. + */ + mtk_disp_pwm_update_bits(mdp, mdp->data->bls_debug, + mdp->data->bls_debug_mask, + mdp->data->bls_debug_mask); + mtk_disp_pwm_update_bits(mdp, mdp->data->con0, + mdp->data->con0_sel, + mdp->data->con0_sel); + } + mtk_disp_pwm_update_bits(mdp, mdp->data->con0, PWM_CLKDIV_MASK, clk_div << PWM_CLKDIV_SHIFT); @@ -152,17 +165,6 @@ static int mtk_disp_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, mtk_disp_pwm_update_bits(mdp, mdp->data->commit, mdp->data->commit_mask, 0x0); - } else { - /* - * For MT2701, disable double buffer before writing register - * and select manual mode and use PWM_PERIOD/PWM_HIGH_WIDTH. - */ - mtk_disp_pwm_update_bits(mdp, mdp->data->bls_debug, - mdp->data->bls_debug_mask, - mdp->data->bls_debug_mask); - mtk_disp_pwm_update_bits(mdp, mdp->data->con0, - mdp->data->con0_sel, - mdp->data->con0_sel); } mtk_disp_pwm_update_bits(mdp, DISP_PWM_EN, mdp->data->enable_mask, @@ -194,6 +196,16 @@ static int mtk_disp_pwm_get_state(struct pwm_chip *chip, return err; } + /* + * Apply DISP_PWM_DEBUG settings to choose whether to enable or disable + * registers double buffer and manual commit to working register before + * performing any read/write operation + */ + if (mdp->data->bls_debug) + mtk_disp_pwm_update_bits(mdp, mdp->data->bls_debug, + mdp->data->bls_debug_mask, + mdp->data->bls_debug_mask); + rate = clk_get_rate(mdp->clk_main); con0 = readl(mdp->base + mdp->data->con0); con1 = readl(mdp->base + mdp->data->con1); @@ -260,13 +272,11 @@ static int mtk_disp_pwm_probe(struct platform_device *pdev) return 0; } -static int mtk_disp_pwm_remove(struct platform_device *pdev) +static void mtk_disp_pwm_remove(struct platform_device *pdev) { struct mtk_disp_pwm *mdp = platform_get_drvdata(pdev); pwmchip_remove(&mdp->chip); - - return 0; } static const struct mtk_pwm_data mt2701_pwm_data = { @@ -314,7 +324,7 @@ static struct platform_driver mtk_disp_pwm_driver = { .of_match_table = mtk_disp_pwm_of_match, }, .probe = mtk_disp_pwm_probe, - .remove = mtk_disp_pwm_remove, + .remove_new = mtk_disp_pwm_remove, }; module_platform_driver(mtk_disp_pwm_driver); diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c index fa800fcf31d4..4889fbd8a431 100644 --- a/drivers/pwm/pwm-omap-dmtimer.c +++ b/drivers/pwm/pwm-omap-dmtimer.c @@ -441,7 +441,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev) return ret; } -static int pwm_omap_dmtimer_remove(struct platform_device *pdev) +static void pwm_omap_dmtimer_remove(struct platform_device *pdev) { struct pwm_omap_dmtimer_chip *omap = platform_get_drvdata(pdev); @@ -455,8 +455,6 @@ static int pwm_omap_dmtimer_remove(struct platform_device *pdev) put_device(&omap->dm_timer_pdev->dev); mutex_destroy(&omap->mutex); - - return 0; } static const struct of_device_id pwm_omap_dmtimer_of_match[] = { @@ -471,7 +469,7 @@ static struct platform_driver pwm_omap_dmtimer_driver = { .of_match_table = of_match_ptr(pwm_omap_dmtimer_of_match), }, .probe = pwm_omap_dmtimer_probe, - .remove = pwm_omap_dmtimer_remove, + .remove_new = pwm_omap_dmtimer_remove, }; module_platform_driver(pwm_omap_dmtimer_driver); diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c index 55f46d09602b..5b5f357c44de 100644 --- a/drivers/pwm/pwm-rcar.c +++ b/drivers/pwm/pwm-rcar.c @@ -238,15 +238,13 @@ static int rcar_pwm_probe(struct platform_device *pdev) return 0; } -static int rcar_pwm_remove(struct platform_device *pdev) +static void rcar_pwm_remove(struct platform_device *pdev) { struct rcar_pwm_chip *rcar_pwm = platform_get_drvdata(pdev); pwmchip_remove(&rcar_pwm->chip); pm_runtime_disable(&pdev->dev); - - return 0; } static const struct of_device_id rcar_pwm_of_table[] = { @@ -257,10 +255,10 @@ MODULE_DEVICE_TABLE(of, rcar_pwm_of_table); static struct platform_driver rcar_pwm_driver = { .probe = rcar_pwm_probe, - .remove = rcar_pwm_remove, + .remove_new = rcar_pwm_remove, .driver = { .name = "pwm-rcar", - .of_match_table = of_match_ptr(rcar_pwm_of_table), + .of_match_table = rcar_pwm_of_table, } }; module_platform_driver(rcar_pwm_driver); diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c index 7f084eb34092..c1a1f2d864b5 100644 --- a/drivers/pwm/pwm-rockchip.c +++ b/drivers/pwm/pwm-rockchip.c @@ -376,7 +376,7 @@ static int rockchip_pwm_probe(struct platform_device *pdev) return ret; } -static int rockchip_pwm_remove(struct platform_device *pdev) +static void rockchip_pwm_remove(struct platform_device *pdev) { struct rockchip_pwm_chip *pc = platform_get_drvdata(pdev); @@ -384,8 +384,6 @@ static int rockchip_pwm_remove(struct platform_device *pdev) clk_unprepare(pc->pclk); clk_unprepare(pc->clk); - - return 0; } static struct platform_driver rockchip_pwm_driver = { @@ -394,7 +392,7 @@ static struct platform_driver rockchip_pwm_driver = { .of_match_table = rockchip_pwm_dt_ids, }, .probe = rockchip_pwm_probe, - .remove = rockchip_pwm_remove, + .remove_new = rockchip_pwm_remove, }; module_platform_driver(rockchip_pwm_driver); diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c index 9c5b4f515641..e8828f57ab15 100644 --- a/drivers/pwm/pwm-samsung.c +++ b/drivers/pwm/pwm-samsung.c @@ -621,15 +621,13 @@ static int pwm_samsung_probe(struct platform_device *pdev) return 0; } -static int pwm_samsung_remove(struct platform_device *pdev) +static void pwm_samsung_remove(struct platform_device *pdev) { struct samsung_pwm_chip *chip = platform_get_drvdata(pdev); pwmchip_remove(&chip->chip); clk_disable_unprepare(chip->base_clk); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -676,7 +674,7 @@ static struct platform_driver pwm_samsung_driver = { .of_match_table = of_match_ptr(samsung_pwm_matches), }, .probe = pwm_samsung_probe, - .remove = pwm_samsung_remove, + .remove_new = pwm_samsung_remove, }; module_platform_driver(pwm_samsung_driver); diff --git a/drivers/pwm/pwm-sifive.c b/drivers/pwm/pwm-sifive.c index 393a4b97fc19..5b0574f635f6 100644 --- a/drivers/pwm/pwm-sifive.c +++ b/drivers/pwm/pwm-sifive.c @@ -313,7 +313,7 @@ static int pwm_sifive_probe(struct platform_device *pdev) return ret; } -static int pwm_sifive_remove(struct platform_device *dev) +static void pwm_sifive_remove(struct platform_device *dev) { struct pwm_sifive_ddata *ddata = platform_get_drvdata(dev); struct pwm_device *pwm; @@ -329,8 +329,6 @@ static int pwm_sifive_remove(struct platform_device *dev) } clk_unprepare(ddata->clk); - - return 0; } static const struct of_device_id pwm_sifive_of_match[] = { @@ -341,7 +339,7 @@ MODULE_DEVICE_TABLE(of, pwm_sifive_of_match); static struct platform_driver pwm_sifive_driver = { .probe = pwm_sifive_probe, - .remove = pwm_sifive_remove, + .remove_new = pwm_sifive_remove, .driver = { .name = "pwm-sifive", .of_match_table = pwm_sifive_of_match, diff --git a/drivers/pwm/pwm-spear.c b/drivers/pwm/pwm-spear.c index 54c7990967dd..4e1cfd8d7c03 100644 --- a/drivers/pwm/pwm-spear.c +++ b/drivers/pwm/pwm-spear.c @@ -247,7 +247,7 @@ static int spear_pwm_probe(struct platform_device *pdev) return ret; } -static int spear_pwm_remove(struct platform_device *pdev) +static void spear_pwm_remove(struct platform_device *pdev) { struct spear_pwm_chip *pc = platform_get_drvdata(pdev); @@ -255,8 +255,6 @@ static int spear_pwm_remove(struct platform_device *pdev) /* clk was prepared in probe, hence unprepare it here */ clk_unprepare(pc->clk); - - return 0; } static const struct of_device_id spear_pwm_of_match[] = { @@ -273,7 +271,7 @@ static struct platform_driver spear_pwm_driver = { .of_match_table = spear_pwm_of_match, }, .probe = spear_pwm_probe, - .remove = spear_pwm_remove, + .remove_new = spear_pwm_remove, }; module_platform_driver(spear_pwm_driver); diff --git a/drivers/pwm/pwm-sprd.c b/drivers/pwm/pwm-sprd.c index bde579a338c2..d43a6fa3f4e0 100644 --- a/drivers/pwm/pwm-sprd.c +++ b/drivers/pwm/pwm-sprd.c @@ -280,13 +280,11 @@ static int sprd_pwm_probe(struct platform_device *pdev) return ret; } -static int sprd_pwm_remove(struct platform_device *pdev) +static void sprd_pwm_remove(struct platform_device *pdev) { struct sprd_pwm_chip *spc = platform_get_drvdata(pdev); pwmchip_remove(&spc->chip); - - return 0; } static const struct of_device_id sprd_pwm_of_match[] = { @@ -301,7 +299,7 @@ static struct platform_driver sprd_pwm_driver = { .of_match_table = sprd_pwm_of_match, }, .probe = sprd_pwm_probe, - .remove = sprd_pwm_remove, + .remove_new = sprd_pwm_remove, }; module_platform_driver(sprd_pwm_driver); diff --git a/drivers/pwm/pwm-sti.c b/drivers/pwm/pwm-sti.c index 44b1f93256b3..b1d1373648a3 100644 --- a/drivers/pwm/pwm-sti.c +++ b/drivers/pwm/pwm-sti.c @@ -669,7 +669,7 @@ static int sti_pwm_probe(struct platform_device *pdev) return 0; } -static int sti_pwm_remove(struct platform_device *pdev) +static void sti_pwm_remove(struct platform_device *pdev) { struct sti_pwm_chip *pc = platform_get_drvdata(pdev); @@ -677,8 +677,6 @@ static int sti_pwm_remove(struct platform_device *pdev) clk_unprepare(pc->pwm_clk); clk_unprepare(pc->cpt_clk); - - return 0; } static const struct of_device_id sti_pwm_of_match[] = { @@ -693,7 +691,7 @@ static struct platform_driver sti_pwm_driver = { .of_match_table = sti_pwm_of_match, }, .probe = sti_pwm_probe, - .remove = sti_pwm_remove, + .remove_new = sti_pwm_remove, }; module_platform_driver(sti_pwm_driver); diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c index f315fa106be8..bb3a045a7334 100644 --- a/drivers/pwm/pwm-stm32-lp.c +++ b/drivers/pwm/pwm-stm32-lp.c @@ -252,7 +252,7 @@ static struct platform_driver stm32_pwm_lp_driver = { .probe = stm32_pwm_lp_probe, .driver = { .name = "stm32-pwm-lp", - .of_match_table = of_match_ptr(stm32_pwm_lp_of_match), + .of_match_table = stm32_pwm_lp_of_match, .pm = &stm32_pwm_lp_pm_ops, }, }; diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index 21e4a34dfff3..62e397aeb9aa 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -207,6 +207,10 @@ static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm, regmap_write(priv->regmap, TIM_ARR, priv->max_arr); regmap_write(priv->regmap, TIM_PSC, psc); + /* Reset input selector to its default input and disable slave mode */ + regmap_write(priv->regmap, TIM_TISEL, 0x0); + regmap_write(priv->regmap, TIM_SMCR, 0x0); + /* Map TI1 or TI2 PWM input to IC1 & IC2 (or TI3/4 to IC3 & IC4) */ regmap_update_bits(priv->regmap, pwm->hwpwm < 2 ? TIM_CCMR1 : TIM_CCMR2, @@ -642,7 +646,7 @@ static int stm32_pwm_probe(struct platform_device *pdev) return 0; } -static int stm32_pwm_remove(struct platform_device *pdev) +static void stm32_pwm_remove(struct platform_device *pdev) { struct stm32_pwm *priv = platform_get_drvdata(pdev); unsigned int i; @@ -651,8 +655,6 @@ static int stm32_pwm_remove(struct platform_device *pdev) pwm_disable(&priv->chip.pwms[i]); pwmchip_remove(&priv->chip); - - return 0; } static int __maybe_unused stm32_pwm_suspend(struct device *dev) @@ -699,7 +701,7 @@ MODULE_DEVICE_TABLE(of, stm32_pwm_of_match); static struct platform_driver stm32_pwm_driver = { .probe = stm32_pwm_probe, - .remove = stm32_pwm_remove, + .remove_new = stm32_pwm_remove, .driver = { .name = "stm32-pwm", .of_match_table = stm32_pwm_of_match, diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index b973da73e9ab..a8790a8fc53e 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -477,7 +477,7 @@ static int sun4i_pwm_probe(struct platform_device *pdev) return ret; } -static int sun4i_pwm_remove(struct platform_device *pdev) +static void sun4i_pwm_remove(struct platform_device *pdev) { struct sun4i_pwm_chip *sun4ichip = platform_get_drvdata(pdev); @@ -485,8 +485,6 @@ static int sun4i_pwm_remove(struct platform_device *pdev) clk_disable_unprepare(sun4ichip->bus_clk); reset_control_assert(sun4ichip->rst); - - return 0; } static struct platform_driver sun4i_pwm_driver = { @@ -495,7 +493,7 @@ static struct platform_driver sun4i_pwm_driver = { .of_match_table = sun4i_pwm_dt_ids, }, .probe = sun4i_pwm_probe, - .remove = sun4i_pwm_remove, + .remove_new = sun4i_pwm_remove, }; module_platform_driver(sun4i_pwm_driver); diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c index 249dc0193297..5810abf66e2a 100644 --- a/drivers/pwm/pwm-tegra.c +++ b/drivers/pwm/pwm-tegra.c @@ -350,7 +350,7 @@ static int tegra_pwm_probe(struct platform_device *pdev) return ret; } -static int tegra_pwm_remove(struct platform_device *pdev) +static void tegra_pwm_remove(struct platform_device *pdev) { struct tegra_pwm_chip *pc = platform_get_drvdata(pdev); @@ -359,8 +359,6 @@ static int tegra_pwm_remove(struct platform_device *pdev) reset_control_assert(pc->rst); pm_runtime_force_suspend(&pdev->dev); - - return 0; } static int __maybe_unused tegra_pwm_runtime_suspend(struct device *dev) @@ -434,7 +432,7 @@ static struct platform_driver tegra_pwm_driver = { .pm = &tegra_pwm_pm_ops, }, .probe = tegra_pwm_probe, - .remove = tegra_pwm_remove, + .remove_new = tegra_pwm_remove, }; module_platform_driver(tegra_pwm_driver); diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c index 4701f0c9b921..109449956307 100644 --- a/drivers/pwm/pwm-tiecap.c +++ b/drivers/pwm/pwm-tiecap.c @@ -265,11 +265,9 @@ static int ecap_pwm_probe(struct platform_device *pdev) return 0; } -static int ecap_pwm_remove(struct platform_device *pdev) +static void ecap_pwm_remove(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -326,7 +324,7 @@ static struct platform_driver ecap_pwm_driver = { .pm = &ecap_pwm_pm_ops, }, .probe = ecap_pwm_probe, - .remove = ecap_pwm_remove, + .remove_new = ecap_pwm_remove, }; module_platform_driver(ecap_pwm_driver); diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c index 48ca0ff690ae..bb3959ace6b4 100644 --- a/drivers/pwm/pwm-tiehrpwm.c +++ b/drivers/pwm/pwm-tiehrpwm.c @@ -511,7 +511,7 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev) return ret; } -static int ehrpwm_pwm_remove(struct platform_device *pdev) +static void ehrpwm_pwm_remove(struct platform_device *pdev) { struct ehrpwm_pwm_chip *pc = platform_get_drvdata(pdev); @@ -520,8 +520,6 @@ static int ehrpwm_pwm_remove(struct platform_device *pdev) clk_unprepare(pc->tbclk); pm_runtime_disable(&pdev->dev); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -604,7 +602,7 @@ static struct platform_driver ehrpwm_pwm_driver = { .pm = &ehrpwm_pwm_pm_ops, }, .probe = ehrpwm_pwm_probe, - .remove = ehrpwm_pwm_remove, + .remove_new = ehrpwm_pwm_remove, }; module_platform_driver(ehrpwm_pwm_driver); diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c index f1ff9940b37c..d2c48fd98706 100644 --- a/drivers/pwm/pwm-vt8500.c +++ b/drivers/pwm/pwm-vt8500.c @@ -279,20 +279,18 @@ static int vt8500_pwm_probe(struct platform_device *pdev) return ret; } -static int vt8500_pwm_remove(struct platform_device *pdev) +static void vt8500_pwm_remove(struct platform_device *pdev) { struct vt8500_chip *vt8500 = platform_get_drvdata(pdev); pwmchip_remove(&vt8500->chip); clk_unprepare(vt8500->clk); - - return 0; } static struct platform_driver vt8500_pwm_driver = { .probe = vt8500_pwm_probe, - .remove = vt8500_pwm_remove, + .remove_new = vt8500_pwm_remove, .driver = { .name = "vt8500-pwm", .of_match_table = vt8500_pwm_dt_ids, diff --git a/drivers/pwm/pwm-xilinx.c b/drivers/pwm/pwm-xilinx.c index f7a50fdcd9a5..85153ee90809 100644 --- a/drivers/pwm/pwm-xilinx.c +++ b/drivers/pwm/pwm-xilinx.c @@ -292,14 +292,13 @@ static int xilinx_pwm_probe(struct platform_device *pdev) return 0; } -static int xilinx_pwm_remove(struct platform_device *pdev) +static void xilinx_pwm_remove(struct platform_device *pdev) { struct xilinx_pwm_device *xilinx_pwm = platform_get_drvdata(pdev); pwmchip_remove(&xilinx_pwm->chip); clk_rate_exclusive_put(xilinx_pwm->priv.clk); clk_disable_unprepare(xilinx_pwm->priv.clk); - return 0; } static const struct of_device_id xilinx_pwm_of_match[] = { @@ -310,7 +309,7 @@ MODULE_DEVICE_TABLE(of, xilinx_pwm_of_match); static struct platform_driver xilinx_pwm_driver = { .probe = xilinx_pwm_probe, - .remove = xilinx_pwm_remove, + .remove_new = xilinx_pwm_remove, .driver = { .name = "xilinx-pwm", .of_match_table = of_match_ptr(xilinx_pwm_of_match), diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h index 5f5c43fd69dd..1b94325febb3 100644 --- a/include/linux/mfd/stm32-timers.h +++ b/include/linux/mfd/stm32-timers.h @@ -31,6 +31,7 @@ #define TIM_BDTR 0x44 /* Break and Dead-Time Reg */ #define TIM_DCR 0x48 /* DMA control register */ #define TIM_DMAR 0x4C /* DMA register for transfer */ +#define TIM_TISEL 0x68 /* Input Selection */ #define TIM_CR1_CEN BIT(0) /* Counter Enable */ #define TIM_CR1_DIR BIT(4) /* Counter Direction */ diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 7b7b93b6fb81..04ae1d9073a7 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -309,8 +309,6 @@ struct pwm_chip { #if IS_ENABLED(CONFIG_PWM) /* PWM user APIs */ -struct pwm_device *pwm_request(int pwm_id, const char *label); -void pwm_free(struct pwm_device *pwm); int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state); int pwm_adjust_config(struct pwm_device *pwm); @@ -410,17 +408,6 @@ struct pwm_device *devm_fwnode_pwm_get(struct device *dev, struct fwnode_handle *fwnode, const char *con_id); #else -static inline struct pwm_device *pwm_request(int pwm_id, const char *label) -{ - might_sleep(); - return ERR_PTR(-ENODEV); -} - -static inline void pwm_free(struct pwm_device *pwm) -{ - might_sleep(); -} - static inline int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state) {