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powerpc/ps3: Replace the flip_ctl logic in ps3av and ps3fb by a mutex

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Introduce ps3_gpu_mutex to synchronizes GPU-related operations, like:
  - invoking the L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT command using the
    lv1_gpu_context_attribute() hypervisor call,
  - handling the PS3AV_CID_AVB_PARAM packet in the PS3 A/V Settings driver.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Geert Uytterhoeven
2008-10-30 08:12:58 +00:00
committed by Paul Mackerras
parent 486936cd93
commit 9b82f3e617
6 changed files with 14 additions and 38 deletions
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4
drivers/ps3/ps3av_cmd.c
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@@ -864,7 +864,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
{
int res;
ps3av_flip_ctl(0); /* flip off */
mutex_lock(&ps3_gpu_mutex);
/* avb packet */
res = ps3av_do_pkt(PS3AV_CID_AVB_PARAM, send_len, sizeof(*avb),
@@ -878,7 +878,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
res);
out:
ps3av_flip_ctl(1); /* flip on */
mutex_unlock(&ps3_gpu_mutex);
return res;
}