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MLK-9606-4 usb: chipidea: otg: test: tst_maint timer implementation

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This patch implements otg test device session maintain timer, if the timer
expires, A device as host should end the session, and clear tst_maint flag
when turn off vbus.

Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit 9d3bd049aef442f11dce77226a0ca09893a6656b)
This commit is contained in:
Li Jun
2014-09-24 14:35:31 +08:00
committed by Leonard Crestez
parent 246bd38ca5
commit f3426fb32f
2 changed files with 22 additions and 0 deletions
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19
drivers/usb/chipidea/otg_fsm.c
View File

@ -219,6 +219,8 @@ static unsigned otg_timer_ms[] = {
TB_DATA_PLS,
TB_SSEND_SRP,
TA_DP_END,
TA_TST_MAINT,
0,
};
/*
@ -371,6 +373,21 @@ static int a_dp_end_tmout(struct ci_hdrc *ci)
return 0;
}
static int a_tst_maint_tmout(struct ci_hdrc *ci)
{
ci->fsm.tst_maint = 0;
if (ci->fsm.otg_vbus_off) {
ci->fsm.otg_vbus_off = 0;
dev_dbg(ci->dev,
"test device does not disconnect, end the session!\n");
}
/* End the session */
ci->fsm.a_bus_req = 0;
ci->fsm.a_bus_drop = 1;
return 0;
}
/*
* Keep this list in the same order as timers indexed
* by enum otg_fsm_timer in include/linux/usb/otg-fsm.h
@ -389,6 +406,8 @@ static int (*otg_timer_handlers[])(struct ci_hdrc *) = {
b_data_pls_tmout, /* B_DATA_PLS */
b_ssend_srp_tmout, /* B_SSEND_SRP */
a_dp_end_tmout, /* A_DP_END */
a_tst_maint_tmout, /* A_TST_MAINT */
NULL, /* HNP_POLLING */
};
/*

3
drivers/usb/chipidea/otg_fsm.h
View File

@ -44,6 +44,9 @@
*/
#define TA_DP_END (200)
#define TA_TST_MAINT (9900) /* OTG test device session maintain
* timer, 9.9s~10.1s
*/
/*
* B-device timing constants