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dmaengine: ste_dma40: Allow memcpy channels to be configured from DT

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At this moment in time the memcpy channels which can be used by the D40
are fixed, as each supported platform in Mainline uses the same ones.
However, platforms do exist which don't follow this convention, so
these will need to be tailored. Fortunately, these platforms will be DT
only, so this change has very little impact on platform data.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lee Jones 2013-05-15 10:51:59 +01:00 • committed by Linus Walleij
parent 8cc5af1255
commit a7dacb68b3
3 changed files with 36 additions and 8 deletions
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2
include/linux/platform_data/dma-ste-dma40.h
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@ -132,6 +132,7 @@ struct stedma40_chan_cfg {
* @num_of_soft_lli_chans: The number of channels that needs to be configured
* to use SoftLLI.
* @use_esram_lcla: flag for mapping the lcla into esram region
* @num_of_memcpy_chans: The number of channels reserved for memcpy.
* @num_of_phy_chans: The number of physical channels implemented in HW.
* 0 means reading the number of channels from DMA HW but this is only valid
* for 'multiple of 4' channels, like 8.
@ -141,6 +142,7 @@ struct stedma40_platform_data {
int *soft_lli_chans;
int num_of_soft_lli_chans;
bool use_esram_lcla;
int num_of_memcpy_chans;
int num_of_phy_chans;
};