diff options
| author | Aurelien Jarno <aurelien@aurel32.net> | 2007-09-25 13:42:09 (GMT) |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-10-11 22:46:07 (GMT) |
| commit | 34cc662f8aae0ce1db5c64d55a39a5081f9e3cd8 (patch) | |
| tree | 69447356fb052c8aa3a74154f2dee082b64f275d /arch/mips/bcm47xx/gpio.c | |
| parent | 25e5fb97419f73d39b37e9f73f9492c394de07b2 (diff) | |
| download | linux-34cc662f8aae0ce1db5c64d55a39a5081f9e3cd8.tar.xz | |
[MIPS] Add gpio support to the BCM47XX platform
Add GPIO support to the BCM47XX platform. It will be used by a GPIO
LED driver.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/bcm47xx/gpio.c')
| -rw-r--r-- | arch/mips/bcm47xx/gpio.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/mips/bcm47xx/gpio.c b/arch/mips/bcm47xx/gpio.c new file mode 100644 index 0000000..f5a53ac --- /dev/null +++ b/arch/mips/bcm47xx/gpio.c @@ -0,0 +1,79 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net> + */ + +#include <linux/ssb/ssb.h> +#include <linux/ssb/ssb_driver_chipcommon.h> +#include <linux/ssb/ssb_driver_extif.h> +#include <asm/mach-bcm47xx/bcm47xx.h> +#include <asm/mach-bcm47xx/gpio.h> + +int bcm47xx_gpio_to_irq(unsigned gpio) +{ + 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 + 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); + +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); + +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); + +int bcm47xx_gpio_direction_output(unsigned gpio, int value) +{ + bcm47xx_gpio_set_value(gpio, value); + + 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); + else + return -EINVAL; + return 0; +} +EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output); + |