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dma/amba-pl08x: add support for the Nomadik variant

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The Nomadik PL080 variant has some extra protection bits that
may be set, so we need to check these bits to see if the
channels are actually available for the DMAengine to use.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Alim Akhtar <alim.akhtar@gmail.com>
Cc: Alessandro Rubini <rubini@gnudd.com>
Reviewed-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Linus Walleij
2012-04-12 09:01:49 +02:00
committed by Vinod Koul
parent d29bf01941
commit affa115ed3
3 changed files with 42 additions and 7 deletions
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3
include/linux/amba/pl08x.h
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@@ -92,6 +92,8 @@ struct pl08x_bus_data {
* right now
* @serving: the virtual channel currently being served by this physical
* channel
* @locked: channel unavailable for the system, e.g. dedicated to secure
* world
*/
struct pl08x_phy_chan {
unsigned int id;
@@ -99,6 +101,7 @@ struct pl08x_phy_chan {
spinlock_t lock;
int signal;
struct pl08x_dma_chan *serving;
bool locked;
};
/**