Hi,
Den 18.04.2015 13:06, skrev Noralf Trønnes:
Add slave transfer capability to BCM2835 dmaengine driver.
This patch is pulled from the bcm2708-dmaengine driver in the
Raspberry Pi repo. The work was done by Gellert Weisz.
Tested using the bcm2835-mmc driver from the same repo.
Signed-off-by: Noralf Trønnes <[email protected]>
---
Gellert Weisz has ended his internship with Raspberry Pi Trading and
was not available to sign off this patch.
The patch is made against mainline 4.0-rc7.
Changes from v1:
Martin Sperl, Dom Cobley:
MAX_LITE_TRANSFER has to be 32-bit aligned
Stefan Wahren:
Variable es is not used
Change splitct to split_cnt
Add dev_err for unsupported buswidth
Rearrange d->frames formula for readability
Move j variable definition to loop
Changes from original code:
Remove slave_id use.
SDHCI_BCM_DMA_WAITS changed to BCM2835_DMA_WAIT_CYCLES.
Use SZ_* macros instead of decimal values.
Change MAX_LITE_TRANSFER from 32k to 64K - 1.
Fix several whitespace issues.
Lee Jones' comments in previous email to Piotr Król:
Remove __func__ from dev_err message.
Cleanup comments.
Is there something missing for this patch to get accepted?
spi-bcm2835 has now DMA support that depends on this patch.
Noralf.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
