linux-kernel - [PATCHv4 3/6] input/cma3000_d0x: Keep configuration on poweroff

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Message-Id: <1319487676-27181-4-git-send-email-ricardo.ribalda@gmail.com>
Date:	Mon, 24 Oct 2011 22:21:13 +0200
From:	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To:	dmitry.torokhov@...il.com, grant.likely@...retlab.ca,
	sameo@...ux.intel.com, peter.ujfalusi@...com, jic23@....ac.uk,
	aghayal@...eaurora.org, david@...deman.nu, Shubhrajyoti@...com,
	saaguirre@...com, hemanthv@...com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Subject: [PATCHv4 3/6] input/cma3000_d0x: Keep configuration on poweroff

When the device goes to poweroff keep the spi/i2c configuration.
Otherwhise the device could not wake up if it was in spi mode.

---

v2: Fixes suggested by Jonathan Cameron
    -Code Style

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
 drivers/input/misc/cma3000_d0x.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/input/misc/cma3000_d0x.c b/drivers/input/misc/cma3000_d0x.c
index 97e36fa..35d2577 100644
--- a/drivers/input/misc/cma3000_d0x.c
+++ b/drivers/input/misc/cma3000_d0x.c
@@ -45,6 +45,7 @@
 #define CMA3000_RANGE2G    (1 << 7)
 #define CMA3000_RANGE8G    (0 << 7)
 #define CMA3000_BUSI2C     (0 << 4)
+#define CMA3000_BUSSPI     (1 << 4)
 #define CMA3000_MODEMASK   (7 << 1)
 #define CMA3000_GRANGEMASK (1 << 7)
 
@@ -231,8 +232,11 @@ static int cma3000_poweron(struct cma3000_accl_data *data)
 static int cma3000_poweroff(struct cma3000_accl_data *data)
 {
 	int ret;
+	u8 ctrl = CMAMODE_POFF;
 
-	ret = CMA3000_SET(data, CMA3000_CTRL, CMAMODE_POFF, "Mode setting");
+	ctrl |= data->bus_ops->ctrl_mod;
+
+	ret = CMA3000_SET(data, CMA3000_CTRL, ctrl, "Mode setting");
 	msleep(CMA3000_SETDELAY);
 
 	return ret;
-- 
1.7.7

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