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+/* arch/arm/mach-s3c2410/include/mach/gpio-fns.h
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+ *
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+ * Copyright (c) 2003,2009 Simtec Electronics
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+ * Ben Dooks <ben@simtec.co.uk>
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+ *
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+ * S3C2410 - hardware
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+*/
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+
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+/* These functions are in the to-be-removed category and it is strongly
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+ * encouraged not to use these in new code. They will be marked deprecated
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+ * very soon.
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+ *
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+ * Most of the functionality can be either replaced by the gpiocfg calls
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+ * for the s3c platform or by the generic GPIOlib API.
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+*/
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+
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+/* external functions for GPIO support
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+ *
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+ * These allow various different clients to access the same GPIO
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+ * registers without conflicting. If your driver only owns the entire
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+ * GPIO register, then it is safe to ioremap/__raw_{read|write} to it.
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+*/
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+
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+/* s3c2410_gpio_cfgpin
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+ *
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+ * set the configuration of the given pin to the value passed.
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+ *
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+ * eg:
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+ * s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0);
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+ * s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
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+*/
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+
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+extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
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+
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+extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
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+
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+/* s3c2410_gpio_getirq
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+ *
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+ * turn the given pin number into the corresponding IRQ number
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+ *
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+ * returns:
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+ * < 0 = no interrupt for this pin
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+ * >=0 = interrupt number for the pin
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+*/
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+
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+extern int s3c2410_gpio_getirq(unsigned int pin);
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+
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+#ifdef CONFIG_CPU_S3C2400
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+
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+extern int s3c2400_gpio_getirq(unsigned int pin);
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+
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+#endif /* CONFIG_CPU_S3C2400 */
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+
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+/* s3c2410_gpio_irqfilter
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+ *
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+ * set the irq filtering on the given pin
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+ *
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+ * on = 0 => disable filtering
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+ * 1 => enable filtering
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+ *
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+ * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
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+ * width of filter (0 through 63)
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+ *
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+ *
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+*/
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+
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+extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
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+ unsigned int config);
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+
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+/* s3c2410_gpio_pullup
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+ *
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+ * configure the pull-up control on the given pin
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+ *
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+ * to = 1 => disable the pull-up
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+ * 0 => enable the pull-up
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+ *
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+ * eg;
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+ *
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+ * s3c2410_gpio_pullup(S3C2410_GPB0, 0);
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+ * s3c2410_gpio_pullup(S3C2410_GPE8, 0);
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+*/
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+
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+extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
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+
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+/* s3c2410_gpio_getpull
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+ *
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+ * Read the state of the pull-up on a given pin
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+ *
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+ * return:
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+ * < 0 => error code
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+ * 0 => enabled
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+ * 1 => disabled
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+*/
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+
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+extern int s3c2410_gpio_getpull(unsigned int pin);
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+
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+extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
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+
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+extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
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