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USB: fix otg20 host mode auto suspend bug.

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This commit is contained in:
wlf
2014-03-12 11:19:54 +08:00
parent 1e836b3284
commit 3870aeaec1
1 changed files with 17 additions and 1 deletions
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18
drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
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@@ -34,7 +34,12 @@
#include "dwc_otg_hcd.h"
#include "dwc_otg_regs.h"
#include <linux/usb.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
#include <../drivers/usb/core/hcd.h>
#else
#include <linux/usb/hcd.h>
#endif
/** @file
* This file contains the implementation of the HCD Interrupt handlers.
*/
@@ -303,6 +308,7 @@ int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
return 1;
}
extern inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t * dwc_otg_hcd);
/** There are multiple conditions that can cause a port interrupt. This function
* determines which interrupt conditions have occurred and handles them
* appropriately. */
@@ -311,6 +317,8 @@ int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd)
int retval = 0;
hprt0_data_t hprt0;
hprt0_data_t hprt0_modify;
struct usb_hcd *hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd);
struct usb_bus *bus = hcd_to_bus(hcd);
hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
hprt0_modify.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
@@ -351,6 +359,14 @@ int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd)
cil_hcd_start(dwc_otg_hcd->core_if);*/
} else {
hprt0_data_t hprt0_local;
/* check if root hub is in suspend state
* if root hub in suspend, resume it.
*/
if ((bus->root_hub) && (hcd->state == HC_STATE_SUSPENDED) ) {
DWC_PRINTF("%s: hcd->state = %d, hcd->flags = %ld\n",
__func__, hcd->state, hcd->flags);
usb_hcd_resume_root_hub(hcd);
}
DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x "
"Port Connect Detected--\n", hprt0.d32);
dwc_otg_hcd->flags.b.port_connect_status_change = 1;