diff options
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/pwm/Makefile | 1 | ||||
| -rw-r--r-- | drivers/pwm/pwm-bfin.c | 157 |
3 files changed, 0 insertions, 167 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index f16aad3bf5d6..38d49dbbf9b7 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -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 diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile index 0258a745f30c..9c676a0dadf5 100644 --- a/drivers/pwm/Makefile +++ b/drivers/pwm/Makefile @@ -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 diff --git a/drivers/pwm/pwm-bfin.c b/drivers/pwm/pwm-bfin.c deleted file mode 100644 index a9a88137f2cb..000000000000 --- a/drivers/pwm/pwm-bfin.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * 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"); |