From: Dmitry Kasatkin Date: Tue, 30 Nov 2010 08:13:27 +0000 (+0200) Subject: crypto: omap-aes - DMA initialization fixes for OMAP off mode X-Git-Tag: v2.6.38-rc1~238^2~19 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=3bd2e2216bc82a83fc5048f8e61d2d22dd5d9cda 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: Dmitry Kasatkin Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 799ca517c121..41c91f3c7f14 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -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);