crypto: ux500: Add crypto and hash acceleration

Adds device driver support for crypto and hash acceleration for the u8500 chip.

ST-Ericsson Linux next: Builds and boot, but fails on cryp probe ER320876.
ST-Ericsson ID: AP 270734

crypto: ux500: cryp: Add power-awareness

Adds power awareness to the cryp part of the device driver for accelerating crypto in u8500.

ST-Ericsson ID: ER277473

crypto: ux500: cryp: Fix of NULL pointer dereference in power-save

Fix of NULL pointer dereference in cryp_disable_power.

ST-Ericsson ID: ER277473

crypto: ux500: cryp/hash: Power-awareness

  - Hash:
	Adds power awareness to the hash part of the device driver for accelerating
	hashing in u8500.
  - Cryp:
  	- Removed erroneous call to cryp_enable_power() in u8500_cryp_resume().
	- Added spinlocks to protect usage of current_ctx.
	- Corrected erroneous gotos in hw_cryp_noxts().
	- Added down_interruptible()/up() in suspend/resume, to make sure
	  the device is not allocated during suspend.

ST-Ericsson ID: ER280692

crypto: ux500: AES ECB converted to ablk_cipher and supports DMA.

- DMA support for AES_ECB added.
- ablk_cipher support added to the driver. In this commit AES_ECB
  is using this asynchronous API. This is a must since you will get
  miscellaneous sleep warning- error-messages from the crypto testmgr
  which runs sanity tests when loading a module in synchrounous mode
  using DMA. Therefore DMA operations should use the ablk_cipher
  (asynchronous) API,
- Added scatterlist walk function for ablk_cipher for the non DMA
  version.
- Added power awarness to DMA related code in this cryp driver.
- Refactored code in hw_cryp_noxts with functions calls when
  getting the device and when setting up the context.
- Renamed registers so they corresponds to the names in the design
  spec.

ST-Ericsson ID: AP277474
ST-Ericsson Linux next: ER320876, v-ape regulator missing.

crypto: ux500: cryp: DES ECB converted to ablk_cipher.

ablk_cipher support added to the driver. In this commit DES_ECB
and DES3_ECB is using this asynchronous API.
This removes the log printout:
BUG: sleeping function called from invalid context at kernel/mutex.c:94.

ST-Ericsson ID: ER322583

crypto: ux500: cryp: More algorithms converted to use ablk_cipher.

In this commit AES_CBC, AES_CTR, DES_CBC and DES3_CBC
is using the asynchronous API.
These algorithms also support DMA, except for givciphers.

ST-Ericsson ID: AP277474

crypto: ux500: cryp: Power save redesign, to improve performance

- Enable and disable power moved to be called only at beginning and end
  of algorithm calls.
- Removed compiler warnings (uninitialized variables) visible using Linux-next
  compiler. Note! Those warnings not visible using default compiler in the
  android forest.

ST-Ericsson ID: AP277474

crypto: Fixes after 2.6.35 merge

Signed-off-by: Berne Hebark <berne.hebark@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Philippe Langlais <philippe.langlais@linaro.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/include/mach/crypto-ux500.h b/arch/arm/mach-ux500/include/mach/crypto-ux500.h
new file mode 100644
index 00000000000..57da88398d5
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/crypto-ux500.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2011
+ *
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson
+ * License terms: GNU General Public License (GPL) version 2
+ */
+#ifndef _CRYPTO_UX500_H
+#include <plat/ste_dma40.h>
+#include <mach/ste-dma40-db8500.h>
+
+struct cryp_platform_data {
+	struct stedma40_chan_cfg mem_to_engine;
+	struct stedma40_chan_cfg engine_to_mem;
+};
+
+#endif