linux-kernel - [PATCH 1/7] mfd: pcf50633 disable unnecessary shutdown on lowsys

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Message-Id: <1255471956-29201-1-git-send-email-fercerpav@gmail.com>
Date:	Wed, 14 Oct 2009 02:12:30 +0400
From:	Paul Fertser <fercerpav@...il.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org,
	Nelson Castillo <arhuaco@...aks-unidos.net>,
	Paul Fertser <fercerpav@...il.com>
Subject: [PATCH 1/7] mfd: pcf50633 disable unnecessary shutdown on lowsys

On gta02 hardware revision A5 it can actually bring the system down
during normal operating conditions so we disable it.

Signed-off-by: Paul Fertser <fercerpav@...il.com>
---
 drivers/mfd/pcf50633-core.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
index d26d774..6efe5c3 100644
--- a/drivers/mfd/pcf50633-core.c
+++ b/drivers/mfd/pcf50633-core.c
@@ -345,6 +345,9 @@ static void pcf50633_irq_worker(struct work_struct *work)
 		goto out;
 	}
 
+	/* defeat 8s death from lowsys on A5 */
+	pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN,  0x04);
+
 	/* We immediately read the usb and adapter status. We thus make sure
 	 * only of USBINS/USBREM IRQ handlers are called */
 	if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
-- 
1.6.0.6

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