pwm: remove pwm-bfin driver (4dab216d) · Commits · 戴 / test

drivers/pwm/Kconfig

+0 −9

Original line number	Diff line number	Diff line
		@@ -113,15 +113,6 @@ config PWM_BERLIN
		To compile this driver as a module, choose M here: the module
		will be called pwm-berlin.

		config PWM_BFIN
		tristate "Blackfin PWM support"
		depends on BFIN_GPTIMERS
		help
		Generic PWM framework driver for Blackfin.

		To compile this driver as a module, choose M here: the module
		will be called pwm-bfin.

		config PWM_BRCMSTB
		tristate "Broadcom STB PWM support"
		depends on ARCH_BRCMSTB \|\| BMIPS_GENERIC

drivers/pwm/Makefile

+0 −1

Original line number	Diff line number	Diff line
		@@ -9,7 +9,6 @@ obj-$(CONFIG_PWM_BCM_IPROC) += pwm-bcm-iproc.o
		obj-$(CONFIG_PWM_BCM_KONA) += pwm-bcm-kona.o
		obj-$(CONFIG_PWM_BCM2835) += pwm-bcm2835.o
		obj-$(CONFIG_PWM_BERLIN) += pwm-berlin.o
		obj-$(CONFIG_PWM_BFIN) += pwm-bfin.o
		obj-$(CONFIG_PWM_BRCMSTB) += pwm-brcmstb.o
		obj-$(CONFIG_PWM_CLPS711X) += pwm-clps711x.o
		obj-$(CONFIG_PWM_CRC) += pwm-crc.o

drivers/pwm/pwm-bfin.c

deleted100644 → 0

+0 −157

Original line number	Diff line number	Diff line
		/*
		* Blackfin Pulse Width Modulation (PWM) core
		*
		* Copyright (c) 2011 Analog Devices Inc.
		*
		* Licensed under the GPL-2 or later.
		*/

		#include <linux/module.h>
		#include <linux/platform_device.h>
		#include <linux/pwm.h>
		#include <linux/slab.h>

		#include <asm/gptimers.h>
		#include <asm/portmux.h>

		struct bfin_pwm_chip {
		struct pwm_chip chip;
		};

		struct bfin_pwm {
		unsigned short pin;
		};

		static const unsigned short pwm_to_gptimer_per[] = {
		P_TMR0, P_TMR1, P_TMR2, P_TMR3, P_TMR4, P_TMR5,
		P_TMR6, P_TMR7, P_TMR8, P_TMR9, P_TMR10, P_TMR11,
		};

		static int bfin_pwm_request(struct pwm_chip chip, struct pwm_device pwm)
		{
		struct bfin_pwm *priv;
		int ret;

		if (pwm->hwpwm >= ARRAY_SIZE(pwm_to_gptimer_per))
		return -EINVAL;

		priv = kzalloc(sizeof(*priv), GFP_KERNEL);
		if (!priv)
		return -ENOMEM;

		priv->pin = pwm_to_gptimer_per[pwm->hwpwm];

		ret = peripheral_request(priv->pin, NULL);
		if (ret) {
		kfree(priv);
		return ret;
		}

		pwm_set_chip_data(pwm, priv);

		return 0;
		}

		static void bfin_pwm_free(struct pwm_chip chip, struct pwm_device pwm)
		{
		struct bfin_pwm *priv = pwm_get_chip_data(pwm);

		if (priv) {
		peripheral_free(priv->pin);
		kfree(priv);
		}
		}

		static int bfin_pwm_config(struct pwm_chip chip, struct pwm_device pwm,
		int duty_ns, int period_ns)
		{
		struct bfin_pwm *priv = pwm_get_chip_data(pwm);
		unsigned long period, duty;
		unsigned long long val;

		val = (unsigned long long)get_sclk() * period_ns;
		do_div(val, NSEC_PER_SEC);
		period = val;

		val = (unsigned long long)period * duty_ns;
		do_div(val, period_ns);
		duty = period - val;

		if (duty >= period)
		duty = period - 1;

		set_gptimer_config(priv->pin, TIMER_MODE_PWM \| TIMER_PERIOD_CNT);
		set_gptimer_pwidth(priv->pin, duty);
		set_gptimer_period(priv->pin, period);

		return 0;
		}

		static int bfin_pwm_enable(struct pwm_chip chip, struct pwm_device pwm)
		{
		struct bfin_pwm *priv = pwm_get_chip_data(pwm);

		enable_gptimer(priv->pin);

		return 0;
		}

		static void bfin_pwm_disable(struct pwm_chip chip, struct pwm_device pwm)
		{
		struct bfin_pwm *priv = pwm_get_chip_data(pwm);

		disable_gptimer(priv->pin);
		}

		static const struct pwm_ops bfin_pwm_ops = {
		.request = bfin_pwm_request,
		.free = bfin_pwm_free,
		.config = bfin_pwm_config,
		.enable = bfin_pwm_enable,
		.disable = bfin_pwm_disable,
		.owner = THIS_MODULE,
		};

		static int bfin_pwm_probe(struct platform_device *pdev)
		{
		struct bfin_pwm_chip *pwm;
		int ret;

		pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL);
		if (!pwm)
		return -ENOMEM;

		platform_set_drvdata(pdev, pwm);

		pwm->chip.dev = &pdev->dev;
		pwm->chip.ops = &bfin_pwm_ops;
		pwm->chip.base = -1;
		pwm->chip.npwm = 12;

		ret = pwmchip_add(&pwm->chip);
		if (ret < 0) {
		dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
		return ret;
		}

		return 0;
		}

		static int bfin_pwm_remove(struct platform_device *pdev)
		{
		struct bfin_pwm_chip *pwm = platform_get_drvdata(pdev);

		return pwmchip_remove(&pwm->chip);
		}

		static struct platform_driver bfin_pwm_driver = {
		.driver = {
		.name = "bfin-pwm",
		},
		.probe = bfin_pwm_probe,
		.remove = bfin_pwm_remove,
		};

		module_platform_driver(bfin_pwm_driver);

		MODULE_LICENSE("GPL");

Admin message