diff options
| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-08-27 07:35:50 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-30 21:51:33 -0700 |
| commit | ed24157ede901608e00f28b4897398a373e1e926 (patch) | |
| tree | 9c925bcaf5adb61084719c93ac579e82e6a169b2 /arch/powerpc/include/asm/qe.h | |
| parent | e0ad2cd8ff7fb957be867d17d44fb4b7093c91bd (diff) | |
| download | linux-ed24157ede901608e00f28b4897398a373e1e926.tar.bz2 | |
powerpc/qe: Implement qe_alive_during_sleep() helper function
In some CPUs (i.e. MPC8569) QE shuts down completely during sleep,
drivers may want to know that to reinitialize registers and buffer
descriptors.
This patch implements qe_alive_during_sleep() helper function, so far
it just checks if MPC8569-compatible power management controller is
present, which is a sign that QE turns off during sleep.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/powerpc/include/asm/qe.h')
| -rw-r--r-- | arch/powerpc/include/asm/qe.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/qe.h b/arch/powerpc/include/asm/qe.h index 157c5ca581c8..f388f0ab193f 100644 --- a/arch/powerpc/include/asm/qe.h +++ b/arch/powerpc/include/asm/qe.h @@ -154,6 +154,7 @@ int qe_get_snum(void); void qe_put_snum(u8 snum); unsigned int qe_get_num_of_risc(void); unsigned int qe_get_num_of_snums(void); +int qe_alive_during_sleep(void); /* we actually use cpm_muram implementation, define this for convenience */ #define qe_muram_init cpm_muram_init |