156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
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/*
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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 <linux/bcma/bcma.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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#ifdef CONFIG_BCM47XX_SSB
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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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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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return bcma_chipco_gpio_in(&bcm47xx_bus.bcma.bus.drv_cc,
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1 << gpio);
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#endif
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}
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return -EINVAL;
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}
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#define gpio_get_value_cansleep gpio_get_value
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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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#ifdef CONFIG_BCM47XX_SSB
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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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return;
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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_chipco_gpio_out(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
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value ? 1 << gpio : 0);
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return;
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#endif
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}
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}
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#define gpio_set_value_cansleep gpio_set_value
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static inline int gpio_cansleep(unsigned gpio)
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{
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return 0;
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}
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static inline int gpio_is_valid(unsigned gpio)
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{
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return gpio < (BCM47XX_EXTIF_GPIO_LINES + BCM47XX_CHIPCO_GPIO_LINES);
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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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#ifdef CONFIG_BCM47XX_SSB
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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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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_chipco_gpio_outen(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
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0);
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return 0;
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#endif
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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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#ifdef CONFIG_BCM47XX_SSB
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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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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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/* first set the gpio out value */
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bcma_chipco_gpio_out(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
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value ? 1 << gpio : 0);
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/* then set the gpio mode */
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bcma_chipco_gpio_outen(&bcm47xx_bus.bcma.bus.drv_cc, 1 << gpio,
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1 << gpio);
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return 0;
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#endif
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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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#ifdef CONFIG_BCM47XX_SSB
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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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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_chipco_gpio_intmask(&bcm47xx_bus.bcma.bus.drv_cc,
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1 << gpio, value ? 1 << gpio : 0);
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return 0;
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#endif
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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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#ifdef CONFIG_BCM47XX_SSB
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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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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_chipco_gpio_polarity(&bcm47xx_bus.bcma.bus.drv_cc,
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1 << gpio, value ? 1 << gpio : 0);
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return 0;
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#endif
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}
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return -EINVAL;
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}
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#endif /* __BCM47XX_GPIO_H */
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