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crypto: omap-sham - DMA initialization fixes for off mode 

DMA parameters for constant data were initialized during driver probe().
It seems that those settings sometimes are lost when devices goes to off mode.
This patch makes DMA initialization just before use.
It solves off mode problems.

Fixes: NB#202786 - Aegis & SHA1 block off mode changes

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dmitry Kasatkin 2010-11-19 16:04:23 +02:00 committed by Herbert Xu
parent 0c3cf4cc9a
commit c8eb54041a
1 changed files with 10 additions and 9 deletions
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19
drivers/crypto/omap-sham.c
View File

@ -318,6 +318,16 @@ static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr,
omap_set_dma_src_params(dd->dma_lch, 0, OMAP_DMA_AMODE_POST_INC,
dma_addr, 0, 0);
omap_set_dma_dest_params(dd->dma_lch, 0,
OMAP_DMA_AMODE_CONSTANT,
dd->phys_base + SHA_REG_DIN(0), 0, 16);
omap_set_dma_dest_burst_mode(dd->dma_lch,
OMAP_DMA_DATA_BURST_16);
omap_set_dma_src_burst_mode(dd->dma_lch,
OMAP_DMA_DATA_BURST_4);
err = omap_sham_write_ctrl(dd, length, final, 1);
if (err)
return err;
@ -1071,15 +1081,6 @@ static int omap_sham_dma_init(struct omap_sham_dev *dd)
dev_err(dd->dev, "Unable to request DMA channel\n");
return err;
}
omap_set_dma_dest_params(dd->dma_lch, 0,
OMAP_DMA_AMODE_CONSTANT,
dd->phys_base + SHA_REG_DIN(0), 0, 16);
omap_set_dma_dest_burst_mode(dd->dma_lch,
OMAP_DMA_DATA_BURST_16);
omap_set_dma_src_burst_mode(dd->dma_lch,
OMAP_DMA_DATA_BURST_4);
return 0;
}