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authorSebastian Rasmussen <sebastian.rasmussen@stericsson.com>2011-08-12 10:28:53 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2011-10-24 14:09:19 +0200
commit597045de35caaef68a11b6defbb618710e1a1e52 (patch)
treefab309289b771709c2a658591e73319bfbc9415a
parentd6e3002e493e43aa40473935e1803849cf37b6bb (diff)
mfd: db8500-prcmu reset code retrieval
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>
-rw-r--r--drivers/mfd/db8500-prcmu.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index cb58e44b1e45..6fd4e2993520 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -1836,6 +1836,17 @@ void db8500_prcmu_system_reset(u16 reset_code)
}
/**
+ * 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
*/
void prcmu_modem_reset(void)