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mdm6600_ctrl: Hold down pwron pin until acknowledged by modem

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This ensures that the modem powers down correctly and is
part of the fix required to ensure that the BP powers up
correctly after reflash / over the air update.

Change-Id: Ied6a1fe2213127c944547ac2ed86abaf0eb63bd2
Signed-off-by: James Wylder <james.wylder@motorola.com>
This commit is contained in:
James Wylder
2011-01-10 15:23:26 -06:00
committed by Benoit Goby
parent 29762841d4
commit 142b2f4d28
1 changed files with 3 additions and 3 deletions
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6
drivers/misc/mdm6600_ctrl.c
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@@ -604,17 +604,17 @@ static void __devexit mdm_ctrl_shutdown(struct platform_device *pdev)
msleep(100);
pr_info("%s: ap_status set to %d", mdmctrl, get_ap_status());
/* Toggle the power, delaying to allow modem to respond */
/* Assert PWRON to tell modem to shutdown and leave pin asserted */
/* until acknowledged or wait times out */
set_bp_pwron(1);
msleep(100);
set_bp_pwron(0);
msleep(100);
/* This should be enough to power down the modem */
/* if this doesn't work, reset the modem and try */
/* one more time, ultimately the modem will be */
/* hard powered off */
pd_failure = bp_shutdown_wait(5);
set_bp_pwron(0);
if (pd_failure) {
pr_info("%s: Resetting unresponsive modem.", mdmctrl);
set_bp_resin(1);