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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-08-27 07:35:50 +0000
committerDavid S. Miller <davem@davemloft.net>2009-08-30 21:51:33 -0700
commited24157ede901608e00f28b4897398a373e1e926 (patch)
tree9c925bcaf5adb61084719c93ac579e82e6a169b2 /arch/powerpc/include/asm/qe.h
parente0ad2cd8ff7fb957be867d17d44fb4b7093c91bd (diff)
downloadlinux-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.h1
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