diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-15 10:22:21 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-15 10:22:21 -0700 |
commit | 04ab591808565f968d4406f6435090ad671ebdab (patch) | |
tree | 60aebaba3ae0911641ce18c6f04a361a278bc60a /arch/mips/bcm47xx/gpio.c | |
parent | 7c3b1dcf13d5660152e02c6dea47b0bd9fd5d871 (diff) | |
parent | 08da6f1bdddca14ba0fe28a5f6c41aa163aa27d3 (diff) |
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: Kill unused <asm/debug.h> inclusions
MIPS: IP32: Add platform device for CMOS RTC; remove dead code
RTC: M48T35: new RTC driver
MIPS: IP27: Switch over to RTC class driver
MIPS: DS1286: New RTC driver
MIPS: IP22/28: Switch over to RTC class driver
MIPS: PCI: Scan busses when they are registered
MIPS: WGT634U: Add reset button support
MIPS: BCM47xx: Use the new SSB GPIO API
MIPS: BCM47xx: Remove references to BCM947XX
MIPS: WGT634U: Add machine detection message
MIPS: Align .data.cacheline_aligned based on CONFIG_MIPS_L1_CACHE_SHIFT
MIPS: show_cpuinfo prints the type of the calling CPU
MIPS: Fix wrong branch target in new spin_lock code.
MIPS: Have a heart for a lonely, lost header file ...
Diffstat (limited to 'arch/mips/bcm47xx/gpio.c')
-rw-r--r-- | arch/mips/bcm47xx/gpio.c | 85 |
1 files changed, 34 insertions, 51 deletions
diff --git a/arch/mips/bcm47xx/gpio.c b/arch/mips/bcm47xx/gpio.c index f5a53acf995..9b798800258 100644 --- a/arch/mips/bcm47xx/gpio.c +++ b/arch/mips/bcm47xx/gpio.c @@ -12,68 +12,51 @@ #include <asm/mach-bcm47xx/bcm47xx.h> #include <asm/mach-bcm47xx/gpio.h> -int bcm47xx_gpio_to_irq(unsigned gpio) +#if (BCM47XX_CHIPCO_GPIO_LINES > BCM47XX_EXTIF_GPIO_LINES) +static DECLARE_BITMAP(gpio_in_use, BCM47XX_CHIPCO_GPIO_LINES); +#else +static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES); +#endif + +int gpio_request(unsigned gpio, const char *tag) { - if (ssb_bcm47xx.chipco.dev) - return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2; - else if (ssb_bcm47xx.extif.dev) - return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2; - else + if (ssb_chipco_available(&ssb_bcm47xx.chipco) && + ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES)) return -EINVAL; -} -EXPORT_SYMBOL_GPL(bcm47xx_gpio_to_irq); -int bcm47xx_gpio_get_value(unsigned gpio) -{ - if (ssb_bcm47xx.chipco.dev) - return ssb_chipco_gpio_in(&ssb_bcm47xx.chipco, 1 << gpio); - else if (ssb_bcm47xx.extif.dev) - return ssb_extif_gpio_in(&ssb_bcm47xx.extif, 1 << gpio); - else - return 0; -} -EXPORT_SYMBOL_GPL(bcm47xx_gpio_get_value); + if (ssb_extif_available(&ssb_bcm47xx.extif) && + ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES)) + return -EINVAL; -void bcm47xx_gpio_set_value(unsigned gpio, int value) -{ - if (ssb_bcm47xx.chipco.dev) - ssb_chipco_gpio_out(&ssb_bcm47xx.chipco, - 1 << gpio, - value ? 1 << gpio : 0); - else if (ssb_bcm47xx.extif.dev) - ssb_extif_gpio_out(&ssb_bcm47xx.extif, - 1 << gpio, - value ? 1 << gpio : 0); -} -EXPORT_SYMBOL_GPL(bcm47xx_gpio_set_value); + if (test_and_set_bit(gpio, gpio_in_use)) + return -EBUSY; -int bcm47xx_gpio_direction_input(unsigned gpio) -{ - if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES)) - ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco, - 1 << gpio, 0); - else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES)) - ssb_extif_gpio_outen(&ssb_bcm47xx.extif, - 1 << gpio, 0); - else - return -EINVAL; return 0; } -EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_input); +EXPORT_SYMBOL(gpio_request); -int bcm47xx_gpio_direction_output(unsigned gpio, int value) +void gpio_free(unsigned gpio) { - bcm47xx_gpio_set_value(gpio, value); + if (ssb_chipco_available(&ssb_bcm47xx.chipco) && + ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES)) + return; + + if (ssb_extif_available(&ssb_bcm47xx.extif) && + ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES)) + return; + + clear_bit(gpio, gpio_in_use); +} +EXPORT_SYMBOL(gpio_free); - if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES)) - ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco, - 1 << gpio, 1 << gpio); - else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES)) - ssb_extif_gpio_outen(&ssb_bcm47xx.extif, - 1 << gpio, 1 << gpio); +int gpio_to_irq(unsigned gpio) +{ + if (ssb_chipco_available(&ssb_bcm47xx.chipco)) + return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2; + else if (ssb_extif_available(&ssb_bcm47xx.extif)) + return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2; else return -EINVAL; - return 0; } -EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output); +EXPORT_SYMBOL_GPL(gpio_to_irq); |