diff options
| author | Michael Buesch <mb@bu3sch.de> | 2008-02-19 16:22:50 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-02-20 20:11:49 -0500 |
| commit | 53521d8c90d366191b6c134f88a8ebe83de60614 (patch) | |
| tree | 2d4b8bed0db743927586389ab035aab816d22f36 /include | |
| parent | c2bcbe65fc88d61f9a806367ff6eab76c9eabb3a (diff) | |
| download | kernel-crypto-53521d8c90d366191b6c134f88a8ebe83de60614.tar.gz kernel-crypto-53521d8c90d366191b6c134f88a8ebe83de60614.tar.xz kernel-crypto-53521d8c90d366191b6c134f88a8ebe83de60614.zip | |
ssb: Make the GPIO API reentrancy safe
This fixes the GPIO API to be reentrancy safe.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ssb/ssb.h | 5 | ||||
| -rw-r--r-- | include/linux/ssb/ssb_embedded.h | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index 9d5da8b2ccf..d14c0368571 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -283,6 +283,11 @@ struct ssb_bus { /* Contents of the SPROM. */ struct ssb_sprom sprom; +#ifdef CONFIG_SSB_EMBEDDED + /* Lock for GPIO register access. */ + spinlock_t gpio_lock; +#endif /* EMBEDDED */ + /* Internal-only stuff follows. Do not touch. */ struct list_head list; #ifdef CONFIG_SSB_DEBUG diff --git a/include/linux/ssb/ssb_embedded.h b/include/linux/ssb/ssb_embedded.h index 80bd5849645..8d8dedff059 100644 --- a/include/linux/ssb/ssb_embedded.h +++ b/include/linux/ssb/ssb_embedded.h @@ -7,4 +7,12 @@ extern int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks); +/* Generic GPIO API */ +u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask); +u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value); +u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value); +u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value); +u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value); +u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value); + #endif /* LINUX_SSB_EMBEDDED_H_ */ |