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mfd: db8500-prcmu reset code retrieval

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This implements the reset code retrieval function so we can
ipso facto get to know how the system was reset.

Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Sebastian Rasmussen 2011-08-12 10:28:53 +02:00 committed by Samuel Ortiz
parent d6e3002e49
commit 597045de35
1 changed files with 11 additions and 0 deletions
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11
drivers/mfd/db8500-prcmu.c
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@ -1835,6 +1835,17 @@ void db8500_prcmu_system_reset(u16 reset_code)
writel(1, PRCM_APE_SOFTRST);
}
/**
* db8500_prcmu_get_reset_code - Retrieve SW reset reason code
*
* Retrieves the reset reason code stored by prcmu_system_reset() before
* last restart.
*/
u16 db8500_prcmu_get_reset_code(void)
{
return readw(tcdm_base + PRCM_SW_RST_REASON);
}
/**
* prcmu_reset_modem - ask the PRCMU to reset modem
*/