34cc662f8a
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>
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
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*/
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#include <linux/ssb/ssb.h>
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#include <linux/ssb/ssb_driver_chipcommon.h>
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#include <linux/ssb/ssb_driver_extif.h>
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#include <asm/mach-bcm47xx/bcm47xx.h>
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#include <asm/mach-bcm47xx/gpio.h>
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int bcm47xx_gpio_to_irq(unsigned gpio)
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{
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if (ssb_bcm47xx.chipco.dev)
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return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2;
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else if (ssb_bcm47xx.extif.dev)
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return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2;
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else
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return -EINVAL;
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}
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EXPORT_SYMBOL_GPL(bcm47xx_gpio_to_irq);
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int bcm47xx_gpio_get_value(unsigned gpio)
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{
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if (ssb_bcm47xx.chipco.dev)
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return ssb_chipco_gpio_in(&ssb_bcm47xx.chipco, 1 << gpio);
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else if (ssb_bcm47xx.extif.dev)
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return ssb_extif_gpio_in(&ssb_bcm47xx.extif, 1 << gpio);
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else
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return 0;
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}
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EXPORT_SYMBOL_GPL(bcm47xx_gpio_get_value);
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void bcm47xx_gpio_set_value(unsigned gpio, int value)
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{
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if (ssb_bcm47xx.chipco.dev)
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ssb_chipco_gpio_out(&ssb_bcm47xx.chipco,
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1 << gpio,
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value ? 1 << gpio : 0);
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else if (ssb_bcm47xx.extif.dev)
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ssb_extif_gpio_out(&ssb_bcm47xx.extif,
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1 << gpio,
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value ? 1 << gpio : 0);
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}
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EXPORT_SYMBOL_GPL(bcm47xx_gpio_set_value);
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int bcm47xx_gpio_direction_input(unsigned gpio)
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{
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if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES))
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ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco,
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1 << gpio, 0);
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else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES))
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ssb_extif_gpio_outen(&ssb_bcm47xx.extif,
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1 << gpio, 0);
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else
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return -EINVAL;
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return 0;
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}
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EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_input);
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int bcm47xx_gpio_direction_output(unsigned gpio, int value)
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{
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bcm47xx_gpio_set_value(gpio, value);
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if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES))
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ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco,
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1 << gpio, 1 << gpio);
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else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES))
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ssb_extif_gpio_outen(&ssb_bcm47xx.extif,
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1 << gpio, 1 << gpio);
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else
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return -EINVAL;
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return 0;
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}
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EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
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