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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-09-27 12:47:17 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-09-27 12:47:17 +1000
commit9aae341287f55d5fc71f8a884e671f9058ad3388 (patch)
tree974ce958e70c0afd0a81cdda6f30d9a037470a98 /arch/powerpc/platforms/52xx
parentcaa1d631fc99940f866480c2bb88a6f5a235e7a2 (diff)
parent9d9fd8871b4136755160bf95a9abd0d23d738ddc (diff)
downloadlinaro-lsk-9aae341287f55d5fc71f8a884e671f9058ad3388.tar.gz
Merge remote-tracking branch 'agust/next' into next
mpc5xxx updates from Anatolij
Diffstat (limited to 'arch/powerpc/platforms/52xx')
-rw-r--r--arch/powerpc/platforms/52xx/mpc5200_simple.c1
-rw-r--r--arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c35
2 files changed, 35 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/52xx/mpc5200_simple.c b/arch/powerpc/platforms/52xx/mpc5200_simple.c
index c0aa04068d6..9cf36020cf0 100644
--- a/arch/powerpc/platforms/52xx/mpc5200_simple.c
+++ b/arch/powerpc/platforms/52xx/mpc5200_simple.c
@@ -52,6 +52,7 @@ static void __init mpc5200_simple_setup_arch(void)
static const char *board[] __initdata = {
"anonymous,a4m072",
"anon,charon",
+ "ifm,o2d",
"intercontrol,digsy-mtc",
"manroland,mucmc52",
"manroland,uc101",
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
index d61fb1c0c1a..2351f9e0fb6 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c
@@ -170,7 +170,8 @@ static void mpc52xx_lpbfifo_kick(struct mpc52xx_lpbfifo_request *req)
out_be32(lpbfifo.regs + LPBFIFO_REG_CONTROL, bit_fields);
/* Kick it off */
- out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01);
+ if (!lpbfifo.req->defer_xfer_start)
+ out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01);
if (dma)
bcom_enable(lpbfifo.bcom_cur_task);
}
@@ -421,6 +422,38 @@ int mpc52xx_lpbfifo_submit(struct mpc52xx_lpbfifo_request *req)
}
EXPORT_SYMBOL(mpc52xx_lpbfifo_submit);
+int mpc52xx_lpbfifo_start_xfer(struct mpc52xx_lpbfifo_request *req)
+{
+ unsigned long flags;
+
+ if (!lpbfifo.regs)
+ return -ENODEV;
+
+ spin_lock_irqsave(&lpbfifo.lock, flags);
+
+ /*
+ * If the req pointer is already set and a transfer was
+ * started on submit, then this transfer is in progress
+ */
+ if (lpbfifo.req && !lpbfifo.req->defer_xfer_start) {
+ spin_unlock_irqrestore(&lpbfifo.lock, flags);
+ return -EBUSY;
+ }
+
+ /*
+ * If the req was previously submitted but not
+ * started, start it now
+ */
+ if (lpbfifo.req && lpbfifo.req == req &&
+ lpbfifo.req->defer_xfer_start) {
+ out_8(lpbfifo.regs + LPBFIFO_REG_PACKET_SIZE, 0x01);
+ }
+
+ spin_unlock_irqrestore(&lpbfifo.lock, flags);
+ return 0;
+}
+EXPORT_SYMBOL(mpc52xx_lpbfifo_start_xfer);
+
void mpc52xx_lpbfifo_abort(struct mpc52xx_lpbfifo_request *req)
{
unsigned long flags;