Commit 3bd2e221 authored by Dmitry Kasatkin's avatar Dmitry Kasatkin Committed by Herbert Xu
Browse files

crypto: omap-aes - DMA initialization fixes for OMAP 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.

Signed-off-by: default avatarDmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent c920fa60

drivers/crypto/omap-aes.c

+12 −12
Original line number Diff line number Diff line
@@ -339,18 +339,6 @@ static int omap_aes_dma_init(struct omap_aes_dev *dd) 
		goto err_dma_out;

	}



	omap_set_dma_dest_params(dd->dma_lch_in, 0, OMAP_DMA_AMODE_CONSTANT,

				 dd->phys_base + AES_REG_DATA, 0, 4);



	omap_set_dma_dest_burst_mode(dd->dma_lch_in, OMAP_DMA_DATA_BURST_4);

	omap_set_dma_src_burst_mode(dd->dma_lch_in, OMAP_DMA_DATA_BURST_4);



	omap_set_dma_src_params(dd->dma_lch_out, 0, OMAP_DMA_AMODE_CONSTANT,

				dd->phys_base + AES_REG_DATA, 0, 4);



	omap_set_dma_src_burst_mode(dd->dma_lch_out, OMAP_DMA_DATA_BURST_4);

	omap_set_dma_dest_burst_mode(dd->dma_lch_out, OMAP_DMA_DATA_BURST_4);



	return 0;



err_dma_out:
@@ -443,6 +431,12 @@ static int omap_aes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in, 
	len32 = DIV_ROUND_UP(length, sizeof(u32));



	/* IN */

	omap_set_dma_dest_params(dd->dma_lch_in, 0, OMAP_DMA_AMODE_CONSTANT,

				 dd->phys_base + AES_REG_DATA, 0, 4);



	omap_set_dma_dest_burst_mode(dd->dma_lch_in, OMAP_DMA_DATA_BURST_4);

	omap_set_dma_src_burst_mode(dd->dma_lch_in, OMAP_DMA_DATA_BURST_4);



	omap_set_dma_transfer_params(dd->dma_lch_in, OMAP_DMA_DATA_TYPE_S32,

				     len32, 1, OMAP_DMA_SYNC_PACKET, dd->dma_in,

					OMAP_DMA_DST_SYNC);
@@ -451,6 +445,12 @@ static int omap_aes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in, 
				dma_addr_in, 0, 0);



	/* OUT */

	omap_set_dma_src_params(dd->dma_lch_out, 0, OMAP_DMA_AMODE_CONSTANT,

				dd->phys_base + AES_REG_DATA, 0, 4);



	omap_set_dma_src_burst_mode(dd->dma_lch_out, OMAP_DMA_DATA_BURST_4);

	omap_set_dma_dest_burst_mode(dd->dma_lch_out, OMAP_DMA_DATA_BURST_4);



	omap_set_dma_transfer_params(dd->dma_lch_out, OMAP_DMA_DATA_TYPE_S32,

				     len32, 1, OMAP_DMA_SYNC_PACKET,

					dd->dma_out, OMAP_DMA_SRC_SYNC);

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