diff options
Diffstat (limited to 'drivers/ssb')
| -rw-r--r-- | drivers/ssb/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/ssb/Makefile | 1 | ||||
| -rw-r--r-- | drivers/ssb/driver_chipcommon.c | 78 | ||||
| -rw-r--r-- | drivers/ssb/driver_extif.c | 43 | ||||
| -rw-r--r-- | drivers/ssb/driver_gige.c | 14 | ||||
| -rw-r--r-- | drivers/ssb/driver_gpio.c | 176 | ||||
| -rw-r--r-- | drivers/ssb/driver_pcicore.c | 10 | ||||
| -rw-r--r-- | drivers/ssb/main.c | 34 | ||||
| -rw-r--r-- | drivers/ssb/pcihost_wrapper.c | 6 | ||||
| -rw-r--r-- | drivers/ssb/ssb_private.h | 17 |
10 files changed, 347 insertions, 40 deletions
diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig index 42cdaa9a4d8..5d6f2ec1c70 100644 --- a/drivers/ssb/Kconfig +++ b/drivers/ssb/Kconfig @@ -160,4 +160,12 @@ config SSB_DRIVER_GIGE If unsure, say N +config SSB_DRIVER_GPIO + bool "SSB GPIO driver" + depends on SSB && GPIOLIB + help + Driver to provide access to the GPIO pins on the bus. + + If unsure, say N + endmenu diff --git a/drivers/ssb/Makefile b/drivers/ssb/Makefile index 656e58b9261..9159ba77c38 100644 --- a/drivers/ssb/Makefile +++ b/drivers/ssb/Makefile @@ -15,6 +15,7 @@ ssb-$(CONFIG_SSB_DRIVER_MIPS) += driver_mipscore.o ssb-$(CONFIG_SSB_DRIVER_EXTIF) += driver_extif.o ssb-$(CONFIG_SSB_DRIVER_PCICORE) += driver_pcicore.o ssb-$(CONFIG_SSB_DRIVER_GIGE) += driver_gige.o +ssb-$(CONFIG_SSB_DRIVER_GPIO) += driver_gpio.o # b43 pci-ssb-bridge driver # Not strictly a part of SSB, but kept here for convenience diff --git a/drivers/ssb/driver_chipcommon.c b/drivers/ssb/driver_chipcommon.c index 95c33a05f43..71098a7b5fe 100644 --- a/drivers/ssb/driver_chipcommon.c +++ b/drivers/ssb/driver_chipcommon.c @@ -349,6 +349,9 @@ void ssb_chipcommon_init(struct ssb_chipcommon *cc) { if (!cc->dev) return; /* We don't have a ChipCommon */ + + spin_lock_init(&cc->gpio_lock); + if (cc->dev->id.revision >= 11) cc->status = chipco_read32(cc, SSB_CHIPCO_CHIPSTAT); ssb_dprintk(KERN_INFO PFX "chipcommon status is 0x%x\n", cc->status); @@ -505,28 +508,93 @@ u32 ssb_chipco_gpio_in(struct ssb_chipcommon *cc, u32 mask) u32 ssb_chipco_gpio_out(struct ssb_chipcommon *cc, u32 mask, u32 value) { - return chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUT, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUT, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; } u32 ssb_chipco_gpio_outen(struct ssb_chipcommon *cc, u32 mask, u32 value) { - return chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUTEN, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUTEN, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; } u32 ssb_chipco_gpio_control(struct ssb_chipcommon *cc, u32 mask, u32 value) { - return chipco_write32_masked(cc, SSB_CHIPCO_GPIOCTL, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOCTL, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; } EXPORT_SYMBOL(ssb_chipco_gpio_control); u32 ssb_chipco_gpio_intmask(struct ssb_chipcommon *cc, u32 mask, u32 value) { - return chipco_write32_masked(cc, SSB_CHIPCO_GPIOIRQ, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOIRQ, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; } u32 ssb_chipco_gpio_polarity(struct ssb_chipcommon *cc, u32 mask, u32 value) { - return chipco_write32_masked(cc, SSB_CHIPCO_GPIOPOL, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOPOL, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; +} + +u32 ssb_chipco_gpio_pullup(struct ssb_chipcommon *cc, u32 mask, u32 value) +{ + unsigned long flags; + u32 res = 0; + + if (cc->dev->id.revision < 20) + return 0xffffffff; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOPULLUP, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; +} + +u32 ssb_chipco_gpio_pulldown(struct ssb_chipcommon *cc, u32 mask, u32 value) +{ + unsigned long flags; + u32 res = 0; + + if (cc->dev->id.revision < 20) + return 0xffffffff; + + spin_lock_irqsave(&cc->gpio_lock, flags); + res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOPULLDOWN, mask, value); + spin_unlock_irqrestore(&cc->gpio_lock, flags); + + return res; } #ifdef CONFIG_SSB_SERIAL diff --git a/drivers/ssb/driver_extif.c b/drivers/ssb/driver_extif.c index 553227a3062..59385fdab5b 100644 --- a/drivers/ssb/driver_extif.c +++ b/drivers/ssb/driver_extif.c @@ -138,6 +138,13 @@ u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks) return ticks; } +void ssb_extif_init(struct ssb_extif *extif) +{ + if (!extif->dev) + return; /* We don't have a Extif core */ + spin_lock_init(&extif->gpio_lock); +} + u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask) { return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask; @@ -145,22 +152,50 @@ u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask) u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value) { - return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0), + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&extif->gpio_lock, flags); + res = extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0), mask, value); + spin_unlock_irqrestore(&extif->gpio_lock, flags); + + return res; } u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value) { - return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0), + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&extif->gpio_lock, flags); + res = extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0), mask, value); + spin_unlock_irqrestore(&extif->gpio_lock, flags); + + return res; } u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, u32 value) { - return extif_write32_masked(extif, SSB_EXTIF_GPIO_INTPOL, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&extif->gpio_lock, flags); + res = extif_write32_masked(extif, SSB_EXTIF_GPIO_INTPOL, mask, value); + spin_unlock_irqrestore(&extif->gpio_lock, flags); + + return res; } u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, u32 value) { - return extif_write32_masked(extif, SSB_EXTIF_GPIO_INTMASK, mask, value); + unsigned long flags; + u32 res = 0; + + spin_lock_irqsave(&extif->gpio_lock, flags); + res = extif_write32_masked(extif, SSB_EXTIF_GPIO_INTMASK, mask, value); + spin_unlock_irqrestore(&extif->gpio_lock, flags); + + return res; } diff --git a/drivers/ssb/driver_gige.c b/drivers/ssb/driver_gige.c index f30ea689933..21f71a1581f 100644 --- a/drivers/ssb/driver_gige.c +++ b/drivers/ssb/driver_gige.c @@ -107,9 +107,8 @@ void gige_pcicfg_write32(struct ssb_gige *dev, gige_write32(dev, SSB_GIGE_PCICFG + offset, value); } -static int __devinit ssb_gige_pci_read_config(struct pci_bus *bus, - unsigned int devfn, int reg, - int size, u32 *val) +static int ssb_gige_pci_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) { struct ssb_gige *dev = container_of(bus->ops, struct ssb_gige, pci_ops); unsigned long flags; @@ -138,9 +137,8 @@ static int __devinit ssb_gige_pci_read_config(struct pci_bus *bus, return PCIBIOS_SUCCESSFUL; } -static int __devinit ssb_gige_pci_write_config(struct pci_bus *bus, - unsigned int devfn, int reg, - int size, u32 val) +static int ssb_gige_pci_write_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 val) { struct ssb_gige *dev = container_of(bus->ops, struct ssb_gige, pci_ops); unsigned long flags; @@ -169,8 +167,8 @@ static int __devinit ssb_gige_pci_write_config(struct pci_bus *bus, return PCIBIOS_SUCCESSFUL; } -static int __devinit ssb_gige_probe(struct ssb_device *sdev, - const struct ssb_device_id *id) +static int ssb_gige_probe(struct ssb_device *sdev, + const struct ssb_device_id *id) { struct ssb_gige *dev; u32 base, tmslow, tmshigh; diff --git a/drivers/ssb/driver_gpio.c b/drivers/ssb/driver_gpio.c new file mode 100644 index 00000000000..97ac0a38e3d --- /dev/null +++ b/drivers/ssb/driver_gpio.c @@ -0,0 +1,176 @@ +/* + * Sonics Silicon Backplane + * GPIO driver + * + * Copyright 2011, Broadcom Corporation + * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de> + * + * Licensed under the GNU/GPL. See COPYING for details. + */ + +#include <linux/gpio.h> +#include <linux/export.h> +#include <linux/ssb/ssb.h> + +#include "ssb_private.h" + +static struct ssb_bus *ssb_gpio_get_bus(struct gpio_chip *chip) +{ + return container_of(chip, struct ssb_bus, gpio); +} + +static int ssb_gpio_chipco_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + return !!ssb_chipco_gpio_in(&bus->chipco, 1 << gpio); +} + +static void ssb_gpio_chipco_set_value(struct gpio_chip *chip, unsigned gpio, + int value) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_chipco_gpio_out(&bus->chipco, 1 << gpio, value ? 1 << gpio : 0); +} + +static int ssb_gpio_chipco_direction_input(struct gpio_chip *chip, + unsigned gpio) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_chipco_gpio_outen(&bus->chipco, 1 << gpio, 0); + return 0; +} + +static int ssb_gpio_chipco_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_chipco_gpio_outen(&bus->chipco, 1 << gpio, 1 << gpio); + ssb_chipco_gpio_out(&bus->chipco, 1 << gpio, value ? 1 << gpio : 0); + return 0; +} + +static int ssb_gpio_chipco_request(struct gpio_chip *chip, unsigned gpio) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_chipco_gpio_control(&bus->chipco, 1 << gpio, 0); + /* clear pulldown */ + ssb_chipco_gpio_pulldown(&bus->chipco, 1 << gpio, 0); + /* Set pullup */ + ssb_chipco_gpio_pullup(&bus->chipco, 1 << gpio, 1 << gpio); + + return 0; +} + +static void ssb_gpio_chipco_free(struct gpio_chip *chip, unsigned gpio) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + /* clear pullup */ + ssb_chipco_gpio_pullup(&bus->chipco, 1 << gpio, 0); +} + +static int ssb_gpio_chipco_init(struct ssb_bus *bus) +{ + struct gpio_chip *chip = &bus->gpio; + + chip->label = "ssb_chipco_gpio"; + chip->owner = THIS_MODULE; + chip->request = ssb_gpio_chipco_request; + chip->free = ssb_gpio_chipco_free; + chip->get = ssb_gpio_chipco_get_value; + chip->set = ssb_gpio_chipco_set_value; + chip->direction_input = ssb_gpio_chipco_direction_input; + chip->direction_output = ssb_gpio_chipco_direction_output; + chip->ngpio = 16; + /* There is just one SoC in one device and its GPIO addresses should be + * deterministic to address them more easily. The other buses could get + * a random base number. */ + if (bus->bustype == SSB_BUSTYPE_SSB) + chip->base = 0; + else + chip->base = -1; + + return gpiochip_add(chip); +} + +#ifdef CONFIG_SSB_DRIVER_EXTIF + +static int ssb_gpio_extif_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + return !!ssb_extif_gpio_in(&bus->extif, 1 << gpio); +} + +static void ssb_gpio_extif_set_value(struct gpio_chip *chip, unsigned gpio, + int value) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_extif_gpio_out(&bus->extif, 1 << gpio, value ? 1 << gpio : 0); +} + +static int ssb_gpio_extif_direction_input(struct gpio_chip *chip, + unsigned gpio) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_extif_gpio_outen(&bus->extif, 1 << gpio, 0); + return 0; +} + +static int ssb_gpio_extif_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ssb_bus *bus = ssb_gpio_get_bus(chip); + + ssb_extif_gpio_outen(&bus->extif, 1 << gpio, 1 << gpio); + ssb_extif_gpio_out(&bus->extif, 1 << gpio, value ? 1 << gpio : 0); + return 0; +} + +static int ssb_gpio_extif_init(struct ssb_bus *bus) +{ + struct gpio_chip *chip = &bus->gpio; + + chip->label = "ssb_extif_gpio"; + chip->owner = THIS_MODULE; + chip->get = ssb_gpio_extif_get_value; + chip->set = ssb_gpio_extif_set_value; + chip->direction_input = ssb_gpio_extif_direction_input; + chip->direction_output = ssb_gpio_extif_direction_output; + chip->ngpio = 5; + /* There is just one SoC in one device and its GPIO addresses should be + * deterministic to address them more easily. The other buses could get + * a random base number. */ + if (bus->bustype == SSB_BUSTYPE_SSB) + chip->base = 0; + else + chip->base = -1; + + return gpiochip_add(chip); +} + +#else +static int ssb_gpio_extif_init(struct ssb_bus *bus) +{ + return -ENOTSUPP; +} +#endif + +int ssb_gpio_init(struct ssb_bus *bus) +{ + if (ssb_chipco_available(&bus->chipco)) + return ssb_gpio_chipco_init(bus); + else if (ssb_extif_available(&bus->extif)) + return ssb_gpio_extif_init(bus); + else + SSB_WARN_ON(1); + + return -1; +} diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c index 49d209173f5..59801d23d7e 100644 --- a/drivers/ssb/driver_pcicore.c +++ b/drivers/ssb/driver_pcicore.c @@ -315,7 +315,7 @@ int ssb_pcicore_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) return ssb_mips_irq(extpci_core->dev) + 2; } -static void __devinit ssb_pcicore_init_hostmode(struct ssb_pcicore *pc) +static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc) { u32 val; @@ -380,7 +380,7 @@ static void __devinit ssb_pcicore_init_hostmode(struct ssb_pcicore *pc) register_pci_controller(&ssb_pcicore_controller); } -static int __devinit pcicore_is_in_hostmode(struct ssb_pcicore *pc) +static int pcicore_is_in_hostmode(struct ssb_pcicore *pc) { struct ssb_bus *bus = pc->dev->bus; u16 chipid_top; @@ -413,7 +413,7 @@ static int __devinit pcicore_is_in_hostmode(struct ssb_pcicore *pc) * Workarounds. **************************************************/ -static void __devinit ssb_pcicore_fix_sprom_core_index(struct ssb_pcicore *pc) +static void ssb_pcicore_fix_sprom_core_index(struct ssb_pcicore *pc) { u16 tmp = pcicore_read16(pc, SSB_PCICORE_SPROM(0)); if (((tmp & 0xF000) >> 12) != pc->dev->core_index) { @@ -515,7 +515,7 @@ static void ssb_pcicore_pcie_setup_workarounds(struct ssb_pcicore *pc) * Generic and Clientmode operation code. **************************************************/ -static void __devinit ssb_pcicore_init_clientmode(struct ssb_pcicore *pc) +static void ssb_pcicore_init_clientmode(struct ssb_pcicore *pc) { struct ssb_device *pdev = pc->dev; struct ssb_bus *bus = pdev->bus; @@ -534,7 +534,7 @@ static void __devinit ssb_pcicore_init_clientmode(struct ssb_pcicore *pc) } } -void __devinit ssb_pcicore_init(struct ssb_pcicore *pc) +void ssb_pcicore_init(struct ssb_pcicore *pc) { struct ssb_device *dev = pc->dev; diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index 6e0daaa0e04..772ad9b5c30 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -548,7 +548,7 @@ error: } /* Needs ssb_buses_lock() */ -static int __devinit ssb_attach_queued_buses(void) +static int ssb_attach_queued_buses(void) { struct ssb_bus *bus, *n; int err = 0; @@ -761,9 +761,9 @@ out: return err; } -static int __devinit ssb_bus_register(struct ssb_bus *bus, - ssb_invariants_func_t get_invariants, - unsigned long baseaddr) +static int ssb_bus_register(struct ssb_bus *bus, + ssb_invariants_func_t get_invariants, + unsigned long baseaddr) { int err; @@ -804,7 +804,14 @@ static int __devinit ssb_bus_register(struct ssb_bus *bus, if (err) goto err_pcmcia_exit; ssb_chipcommon_init(&bus->chipco); + ssb_extif_init(&bus->extif); ssb_mipscore_init(&bus->mipscore); + err = ssb_gpio_init(bus); + if (err == -ENOTSUPP) + ssb_dprintk(KERN_DEBUG PFX "GPIO driver not activated\n"); + else if (err) + ssb_dprintk(KERN_ERR PFX + "Error registering GPIO driver: %i\n", err); err = ssb_fetch_invariants(bus, get_invariants); if (err) { ssb_bus_may_powerdown(bus); @@ -844,8 +851,7 @@ err_disable_xtal: } #ifdef CONFIG_SSB_PCIHOST -int __devinit ssb_bus_pcibus_register(struct ssb_bus *bus, - struct pci_dev *host_pci) +int ssb_bus_pcibus_register(struct ssb_bus *bus, struct pci_dev *host_pci) { int err; @@ -868,9 +874,9 @@ EXPORT_SYMBOL(ssb_bus_pcibus_register); #endif /* CONFIG_SSB_PCIHOST */ #ifdef CONFIG_SSB_PCMCIAHOST -int __devinit ssb_bus_pcmciabus_register(struct ssb_bus *bus, - struct pcmcia_device *pcmcia_dev, - unsigned long baseaddr) +int ssb_bus_pcmciabus_register(struct ssb_bus *bus, + struct pcmcia_device *pcmcia_dev, + unsigned long baseaddr) { int err; @@ -890,9 +896,8 @@ EXPORT_SYMBOL(ssb_bus_pcmciabus_register); #endif /* CONFIG_SSB_PCMCIAHOST */ #ifdef CONFIG_SSB_SDIOHOST -int __devinit ssb_bus_sdiobus_register(struct ssb_bus *bus, - struct sdio_func *func, - unsigned int quirks) +int ssb_bus_sdiobus_register(struct ssb_bus *bus, struct sdio_func *func, + unsigned int quirks) { int err; @@ -912,9 +917,8 @@ int __devinit ssb_bus_sdiobus_register(struct ssb_bus *bus, EXPORT_SYMBOL(ssb_bus_sdiobus_register); #endif /* CONFIG_SSB_PCMCIAHOST */ -int __devinit ssb_bus_ssbbus_register(struct ssb_bus *bus, - unsigned long baseaddr, - ssb_invariants_func_t get_invariants) +int ssb_bus_ssbbus_register(struct ssb_bus *bus, unsigned long baseaddr, + ssb_invariants_func_t get_invariants) { int err; diff --git a/drivers/ssb/pcihost_wrapper.c b/drivers/ssb/pcihost_wrapper.c index af5448f5e2d..32ed1fa4a82 100644 --- a/drivers/ssb/pcihost_wrapper.c +++ b/drivers/ssb/pcihost_wrapper.c @@ -54,8 +54,8 @@ static int ssb_pcihost_resume(struct pci_dev *dev) # define ssb_pcihost_resume NULL #endif /* CONFIG_PM */ -static int __devinit ssb_pcihost_probe(struct pci_dev *dev, - const struct pci_device_id *id) +static int ssb_pcihost_probe(struct pci_dev *dev, + const struct pci_device_id *id) { struct ssb_bus *ssb; int err = -ENOMEM; @@ -111,7 +111,7 @@ static void ssb_pcihost_remove(struct pci_dev *dev) pci_set_drvdata(dev, NULL); } -int __devinit ssb_pcihost_register(struct pci_driver *driver) +int ssb_pcihost_register(struct pci_driver *driver) { driver->probe = ssb_pcihost_probe; driver->remove = ssb_pcihost_remove; diff --git a/drivers/ssb/ssb_private.h b/drivers/ssb/ssb_private.h index 8942db1d855..6c10b66c796 100644 --- a/drivers/ssb/ssb_private.h +++ b/drivers/ssb/ssb_private.h @@ -242,4 +242,21 @@ static inline int ssb_watchdog_register(struct ssb_bus *bus) } #endif /* CONFIG_SSB_EMBEDDED */ +#ifdef CONFIG_SSB_DRIVER_EXTIF +extern void ssb_extif_init(struct ssb_extif *extif); +#else +static inline void ssb_extif_init(struct ssb_extif *extif) +{ +} +#endif + +#ifdef CONFIG_SSB_DRIVER_GPIO +extern int ssb_gpio_init(struct ssb_bus *bus); +#else /* CONFIG_SSB_DRIVER_GPIO */ +static inline int ssb_gpio_init(struct ssb_bus *bus) +{ + return -ENOTSUPP; +} +#endif /* CONFIG_SSB_DRIVER_GPIO */ + #endif /* LINUX_SSB_PRIVATE_H_ */ |