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>
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index cb58e44..6fd4e29 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -1836,6 +1836,17 @@
}
/**
+ * 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)