diff options
author | sgalabov <sgalabov@FreeBSD.org> | 2016-04-08 15:28:12 +0000 |
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committer | sgalabov <sgalabov@FreeBSD.org> | 2016-04-08 15:28:12 +0000 |
commit | 0b9eafa294015a9c7d4b2f39a39997164aae5d63 (patch) | |
tree | da825f952a527d474189c5e7bc96cb6ae389594c /sys/mips | |
parent | b7ef0383b8e27ff2210c513b1da66990ad327f15 (diff) | |
download | FreeBSD-src-0b9eafa294015a9c7d4b2f39a39997164aae5d63.zip FreeBSD-src-0b9eafa294015a9c7d4b2f39a39997164aae5d63.tar.gz |
Introduce better locking for mtk_gpio_v[12] drivers
Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D5887
Diffstat (limited to 'sys/mips')
-rw-r--r-- | sys/mips/mediatek/mtk_gpio_v1.c | 49 | ||||
-rw-r--r-- | sys/mips/mediatek/mtk_gpio_v2.c | 51 |
2 files changed, 79 insertions, 21 deletions
diff --git a/sys/mips/mediatek/mtk_gpio_v1.c b/sys/mips/mediatek/mtk_gpio_v1.c index 1882029..29b2258 100644 --- a/sys/mips/mediatek/mtk_gpio_v1.c +++ b/sys/mips/mediatek/mtk_gpio_v1.c @@ -431,19 +431,29 @@ mtk_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags) static int mtk_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value) { - struct mtk_gpio_softc *sc = device_get_softc(dev); + struct mtk_gpio_softc *sc; + int ret; + + sc = device_get_softc(dev); + ret = 0; - if (pin >= sc->num_pins || !(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) + if (pin >= sc->num_pins) return (EINVAL); MTK_GPIO_LOCK(sc); + if(!(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) { + ret = EINVAL; + goto out; + } + if (value) MTK_WRITE_4(sc, GPIO_PIOSET(sc), (1u << pin)); else MTK_WRITE_4(sc, GPIO_PIORESET(sc), (1u << pin)); - MTK_GPIO_UNLOCK(sc); - return (0); +out: + MTK_GPIO_UNLOCK(sc); + return (ret); } static int @@ -451,33 +461,50 @@ mtk_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val) { struct mtk_gpio_softc *sc; uint32_t data; + int ret; sc = device_get_softc(dev); + ret = 0; - if (pin >= sc->num_pins || !(sc->pins[pin].pin_flags & GPIO_PIN_INPUT)) + if (pin >= sc->num_pins) return (EINVAL); MTK_GPIO_LOCK(sc); + if(!(sc->pins[pin].pin_flags & GPIO_PIN_INPUT)) { + ret = EINVAL; + goto out; + } data = MTK_READ_4(sc, GPIO_PIODATA(sc)); - MTK_GPIO_UNLOCK(sc); *val = (data & (1u << pin)) ? 1 : 0; - return (0); +out: + MTK_GPIO_UNLOCK(sc); + return (ret); } static int mtk_gpio_pin_toggle(device_t dev, uint32_t pin) { - struct mtk_gpio_softc *sc = device_get_softc(dev); + struct mtk_gpio_softc *sc; + int ret; - if (pin >= sc->num_pins || !(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) + if (pin >= sc->num_pins) return (EINVAL); + sc = device_get_softc(dev); + ret = 0; + MTK_GPIO_LOCK(sc); + if (!(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) { + ret = EINVAL; + goto out; + } MTK_WRITE_4(sc, GPIO_PIOTOG(sc), (1u << pin)); + +out: MTK_GPIO_UNLOCK(sc); - return (0); + return (ret); } static int @@ -571,7 +598,9 @@ mtk_gpio_pic_post_filter(device_t dev, struct intr_irqsrc *isrc) pisrc = (struct mtk_gpio_pin_irqsrc *)isrc; sc = device_get_softc(dev); + MTK_GPIO_LOCK(sc); MTK_WRITE_4(sc, GPIO_PIOINT(sc), 1u << pisrc->irq); + MTK_GPIO_UNLOCK(sc); } static int diff --git a/sys/mips/mediatek/mtk_gpio_v2.c b/sys/mips/mediatek/mtk_gpio_v2.c index 543133c..282b112 100644 --- a/sys/mips/mediatek/mtk_gpio_v2.c +++ b/sys/mips/mediatek/mtk_gpio_v2.c @@ -425,19 +425,29 @@ mtk_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags) static int mtk_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value) { - struct mtk_gpio_softc *sc = device_get_softc(dev); + struct mtk_gpio_softc *sc; + int ret; - if (pin >= sc->num_pins || !(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) + if (pin >= sc->num_pins) return (EINVAL); + sc = device_get_softc(dev); + ret = 0; + MTK_GPIO_LOCK(sc); + if (!(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) { + ret = EINVAL; + goto out; + } if (value) MTK_WRITE_4(sc, GPIO_PIOSET(sc), (1u << pin)); else MTK_WRITE_4(sc, GPIO_PIORESET(sc), (1u << pin)); + +out: MTK_GPIO_UNLOCK(sc); - return (0); + return (ret); } static int @@ -445,39 +455,56 @@ mtk_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val) { struct mtk_gpio_softc *sc; uint32_t data; + int ret; - sc = device_get_softc(dev); - - if (pin >= sc->num_pins || !(sc->pins[pin].pin_flags & GPIO_PIN_INPUT)) + if (pin >= sc->num_pins) return (EINVAL); + sc = device_get_softc(dev); + ret = 0; + MTK_GPIO_LOCK(sc); + if (!(sc->pins[pin].pin_flags & GPIO_PIN_INPUT)) { + ret = EINVAL; + goto out; + } data = MTK_READ_4(sc, GPIO_PIODATA(sc)); - MTK_GPIO_UNLOCK(sc); *val = (data & (1u << pin)) ? 1 : 0; - return (0); +out: + MTK_GPIO_UNLOCK(sc); + return (ret); } static int mtk_gpio_pin_toggle(device_t dev, uint32_t pin) { - struct mtk_gpio_softc *sc = device_get_softc(dev); + struct mtk_gpio_softc *sc; uint32_t val; + int ret; - if (pin >= sc->num_pins || !(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) + if (pin >= sc->num_pins) return (EINVAL); + sc = device_get_softc(dev); + ret = 0; + MTK_GPIO_LOCK(sc); + if(!(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) { + ret = EINVAL; + goto out; + } val = MTK_READ_4(sc, GPIO_PIODATA(sc)); val &= (1u << pin); if (val) MTK_WRITE_4(sc, GPIO_PIORESET(sc), (1u << pin)); else MTK_WRITE_4(sc, GPIO_PIOSET(sc), (1u << pin)); + +out: MTK_GPIO_UNLOCK(sc); - return (0); + return (ret); } static int @@ -571,7 +598,9 @@ mtk_gpio_pic_post_filter(device_t dev, struct intr_irqsrc *isrc) pisrc = (struct mtk_gpio_pin_irqsrc *)isrc; sc = device_get_softc(dev); + MTK_GPIO_LOCK(sc); MTK_WRITE_4(sc, GPIO_PIOINT(sc), 1u << pisrc->irq); + MTK_GPIO_UNLOCK(sc); } static int |