08ccf57283
Prepare bcm47xx to support different System buses. Before adding support for bcma it should be possible to build bcm47xx without the need of ssb. With this patch bcm47xx does not directly contain a ssb_bus, but a union contain all the supported system buses. As a SoC just uses one system bus a union is a good choice. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
91 lines
2.0 KiB
C
91 lines
2.0 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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#ifndef __BCM47XX_GPIO_H
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#define __BCM47XX_GPIO_H
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#include <linux/ssb/ssb_embedded.h>
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#include <asm/mach-bcm47xx/bcm47xx.h>
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#define BCM47XX_EXTIF_GPIO_LINES 5
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#define BCM47XX_CHIPCO_GPIO_LINES 16
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extern int gpio_request(unsigned gpio, const char *label);
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extern void gpio_free(unsigned gpio);
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extern int gpio_to_irq(unsigned gpio);
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static inline int gpio_get_value(unsigned gpio)
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{
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switch (bcm47xx_bus_type) {
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case BCM47XX_BUS_TYPE_SSB:
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return ssb_gpio_in(&bcm47xx_bus.ssb, 1 << gpio);
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}
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return -EINVAL;
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}
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static inline void gpio_set_value(unsigned gpio, int value)
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{
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switch (bcm47xx_bus_type) {
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case BCM47XX_BUS_TYPE_SSB:
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ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
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value ? 1 << gpio : 0);
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}
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}
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static inline int gpio_direction_input(unsigned gpio)
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{
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switch (bcm47xx_bus_type) {
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case BCM47XX_BUS_TYPE_SSB:
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ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 0);
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return 0;
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}
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return -EINVAL;
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}
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static inline int gpio_direction_output(unsigned gpio, int value)
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{
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switch (bcm47xx_bus_type) {
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case BCM47XX_BUS_TYPE_SSB:
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/* first set the gpio out value */
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ssb_gpio_out(&bcm47xx_bus.ssb, 1 << gpio,
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value ? 1 << gpio : 0);
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/* then set the gpio mode */
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ssb_gpio_outen(&bcm47xx_bus.ssb, 1 << gpio, 1 << gpio);
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return 0;
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}
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return -EINVAL;
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}
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static inline int gpio_intmask(unsigned gpio, int value)
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{
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switch (bcm47xx_bus_type) {
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case BCM47XX_BUS_TYPE_SSB:
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ssb_gpio_intmask(&bcm47xx_bus.ssb, 1 << gpio,
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value ? 1 << gpio : 0);
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return 0;
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}
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return -EINVAL;
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}
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static inline int gpio_polarity(unsigned gpio, int value)
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{
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switch (bcm47xx_bus_type) {
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case BCM47XX_BUS_TYPE_SSB:
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ssb_gpio_polarity(&bcm47xx_bus.ssb, 1 << gpio,
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value ? 1 << gpio : 0);
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return 0;
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}
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return -EINVAL;
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}
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/* cansleep wrappers */
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#include <asm-generic/gpio.h>
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#endif /* __BCM47XX_GPIO_H */
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