From 56ebc06393e86cd3ffd66655c84df0146158d951 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Wed, 29 Aug 2012 21:31:08 +0000 Subject: powerpc/mpc5200: add dts files for ifm camera machines Add common o2d dtsi file to reuse it for other configurations. Add machine compatible string to mpc5200 simple platform file. Add dts files for O2D, O2I, O2MNT, O2DNT2, O2D300 and O3DNT boards. Signed-off-by: Anatolij Gustschin --- arch/powerpc/platforms/52xx/mpc5200_simple.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/platforms/52xx') 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", -- cgit v1.2.1 From 9d9fd8871b4136755160bf95a9abd0d23d738ddc Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Wed, 29 Aug 2012 21:33:28 +0000 Subject: powerpc/mpc52xx_lpbfifo: optionally defer fifo transfer start Currently fifo transfer is started when submitting a transfer request. Add posibility to defer the fifo transfer and start it later by calling additional function. This change is backward compatible, the behaviour of mpc52xx_lpbfifo_submit() is the same for previous driver users, so there is no need to adapt them. Signed-off-by: Anatolij Gustschin --- arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c | 35 ++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/platforms/52xx') 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; -- cgit v1.2.1