linux-kernel - [PATCH 10/23] mfd/db8500-prcmu: reset code retrieval

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Message-ID: <1313137733-30914-1-git-send-email-linus.walleij@stericsson.com>
Date:	Fri, 12 Aug 2011 10:28:53 +0200
From:	Linus Walleij <linus.walleij@...ricsson.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>,
	<linux-kernel@...r.kernel.org>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Sebastian Rasmussen <sebastian.rasmussen@...ricsson.com>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 10/23] mfd/db8500-prcmu: reset code retrieval

From: Sebastian Rasmussen <sebastian.rasmussen@...ricsson.com>

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@...ricsson.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/mfd/db8500-prcmu.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

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 @@ 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)
-- 
1.7.3.2

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