diff options
| author |   Lee Jones <lee.jones@linaro.org> | 2013-05-15 10:51:36 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2013-05-23 21:14:07 +0200 |
| commit | 85c5632d1f7f487d6ac0fb187ee0dacded60abc4 (patch) | |
| tree | e5737e63db8b33347404f8c370a025ffdb02c72b /drivers/crypto/ux500 | |
| parent | crypto: ux500/hash - Prepare clock before enabling it (diff) | |
| download | linux-dev-85c5632d1f7f487d6ac0fb187ee0dacded60abc4.tar.xz linux-dev-85c5632d1f7f487d6ac0fb187ee0dacded60abc4.zip | |
crypto: ux500/hash - Set DMA configuration though dma_slave_config()
The DMA controller currently takes configuration information from
information passed though dma_channel_request(), but it shouldn't.
Using the API, the DMA channel should only be configured during
a dma_slave_config() call.
Cc: David S. Miller <davem@davemloft.net>
Cc: Andreas Westin <andreas.westin@stericsson.com>
Cc: linux-crypto@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
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>
Diffstat (limited to 'drivers/crypto/ux500')
| -rw-r--r-- | drivers/crypto/ux500/hash/hash_alg.h | 5 | ||||
| -rw-r--r-- | drivers/crypto/ux500/hash/hash_core.c | 10 |
2 files changed, 14 insertions, 1 deletions
diff --git a/drivers/crypto/ux500/hash/hash_alg.h b/drivers/crypto/ux500/hash/hash_alg.h index cd9351cb24df..be6eb54da40f 100644 --- a/drivers/crypto/ux500/hash/hash_alg.h +++ b/drivers/crypto/ux500/hash/hash_alg.h @@ -11,6 +11,7 @@ #include <linux/bitops.h> #define HASH_BLOCK_SIZE 64 +#define HASH_DMA_FIFO 4 #define HASH_DMA_ALIGN_SIZE 4 #define HASH_DMA_PERFORMANCE_MIN_SIZE 1024 #define HASH_BYTES_PER_WORD 4 @@ -347,7 +348,8 @@ struct hash_req_ctx { /** * struct hash_device_data - structure for a hash device. - * @base: Pointer to the hardware base address. + * @base: Pointer to virtual base address of the hash device. + * @phybase: Pointer to physical memory location of the hash device. * @list_node: For inclusion in klist. * @dev: Pointer to the device dev structure. * @ctx_lock: Spinlock for current_ctx. @@ -361,6 +363,7 @@ struct hash_req_ctx { */ struct hash_device_data { struct hash_register __iomem *base; + phys_addr_t phybase; struct klist_node list_node; struct device *dev; struct spinlock ctx_lock; diff --git a/drivers/crypto/ux500/hash/hash_core.c b/drivers/crypto/ux500/hash/hash_core.c index 4b024280def1..62695764de1c 100644 --- a/drivers/crypto/ux500/hash/hash_core.c +++ b/drivers/crypto/ux500/hash/hash_core.c @@ -122,6 +122,13 @@ static void hash_dma_setup_channel(struct hash_device_data *device_data, struct device *dev) { struct hash_platform_data *platform_data = dev->platform_data; + struct dma_slave_config conf = { + .direction = DMA_MEM_TO_DEV, + .dst_addr = device_data->phybase + HASH_DMA_FIFO, + .dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, + .dst_maxburst = 16, + }; + dma_cap_zero(device_data->dma.mask); dma_cap_set(DMA_SLAVE, device_data->dma.mask); @@ -131,6 +138,8 @@ static void hash_dma_setup_channel(struct hash_device_data *device_data, platform_data->dma_filter, device_data->dma.cfg_mem2hash); + dmaengine_slave_config(device_data->dma.chan_mem2hash, &conf); + init_completion(&device_data->dma.complete); } @@ -1699,6 +1708,7 @@ static int ux500_hash_probe(struct platform_device *pdev) goto out_kfree; } + device_data->phybase = res->start; device_data->base = ioremap(res->start, resource_size(res)); if (!device_data->base) { dev_err(dev, "[%s] ioremap() failed!", |