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crypto: omap-aes - Don't reset controller for every operation

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The AES controller only needs to be reset once and that will
be done by the hwmod infrastructure, if possible.  Therefore,
remove the reset code from the omap-aes driver.

CC: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Mark A. Greer 2013-01-08 11:57:39 -07:00 committed by Herbert Xu
parent 05f369a89a
commit 7219368b05
1 changed files with 0 additions and 27 deletions
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27
drivers/crypto/omap-aes.c
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@ -160,19 +160,6 @@ static void omap_aes_write_n(struct omap_aes_dev *dd, u32 offset,
omap_aes_write(dd, offset, *value);
}
static int omap_aes_wait(struct omap_aes_dev *dd, u32 offset, u32 bit)
{
unsigned long timeout = jiffies + DEFAULT_TIMEOUT;
while (!(omap_aes_read(dd, offset) & bit)) {
if (time_is_before_jiffies(timeout)) {
dev_err(dd->dev, "omap-aes timeout\n");
return -ETIMEDOUT;
}
}
return 0;
}
static int omap_aes_hw_init(struct omap_aes_dev *dd)
{
/*
@ -183,20 +170,6 @@ static int omap_aes_hw_init(struct omap_aes_dev *dd)
clk_enable(dd->iclk);
if (!(dd->flags & FLAGS_INIT)) {
/* is it necessary to reset before every operation? */
omap_aes_write_mask(dd, AES_REG_MASK, AES_REG_MASK_SOFTRESET,
AES_REG_MASK_SOFTRESET);
/*
* prevent OCP bus error (SRESP) in case an access to the module
* is performed while the module is coming out of soft reset
*/
__asm__ __volatile__("nop");
__asm__ __volatile__("nop");
if (omap_aes_wait(dd, AES_REG_SYSSTATUS,
AES_REG_SYSSTATUS_RESETDONE))
return -ETIMEDOUT;
dd->flags |= FLAGS_INIT;
dd->err = 0;
}