diff options
| author | Jibben Nee <ziddey@ijib.com> | 2013-10-16 23:26:08 -0400 |
|---|---|---|
| committer | Toni Toivanen <tonitoivanen95@gmail.com> | 2014-05-11 16:20:12 +0300 |
| commit | 69a8edcfd8ca6987626f20cd5a78051f43f532e9 (patch) | |
| tree | befc24ba027135b7625175fb929e404028bbecc0 | |
| parent | 5b3d457e132569dee15997f9fcfe1001c57810de (diff) | |
msm_otg: hack to allow manual usb host mode (externally powered)kitkat-442
Enable debugfs /sys/kernel/debug/msm_otg/mode for manual otg mode manipulation.
Always force requested mode (none, peripheral, host).
Use ID_A bit instead of ID for host mode.
Change-Id: If46de86cebb51c1cff47300dec7acc9f321bf420
Note: There are no provisions for charger detection when setting host mode manually.
| -rw-r--r-- | drivers/usb/otg/msm_otg.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c index 68ecce4f1e9..ac8639df511 100644 --- a/drivers/usb/otg/msm_otg.c +++ b/drivers/usb/otg/msm_otg.c @@ -1235,7 +1235,7 @@ static int msm_otg_usbdev_notify(struct notifier_block *self, */ // do not cause required code to be skipped -ziddey - // will not switch to a_host / charge otherwise + // will not switch to a_host or charge otherwise /*if (!udev->parent || udev->parent->parent || motg->chg_type == USB_ACA_DOCK_CHARGER) goto out;*/ @@ -3159,39 +3159,43 @@ static ssize_t msm_otg_mode_write(struct file *file, const char __user *ubuf, goto out; } + // always force req_mode, and use ID_A instead of ID for host mode -ziddey switch (req_mode) { case USB_NONE: - switch (phy->state) { + /*switch (phy->state) { case OTG_STATE_A_HOST: case OTG_STATE_B_PERIPHERAL: - set_bit(ID, &motg->inputs); + set_bit(ID, &motg->inputs);*/ + clear_bit(ID_A, &motg->inputs); clear_bit(B_SESS_VLD, &motg->inputs); break; - default: + /*default: goto out; } - break; + break;*/ case USB_PERIPHERAL: - switch (phy->state) { + /*switch (phy->state) { case OTG_STATE_B_IDLE: case OTG_STATE_A_HOST: - set_bit(ID, &motg->inputs); + set_bit(ID, &motg->inputs);*/ + clear_bit(ID_A, &motg->inputs); set_bit(B_SESS_VLD, &motg->inputs); break; - default: + /*default: goto out; } - break; + break;*/ case USB_HOST: - switch (phy->state) { + /*switch (phy->state) { case OTG_STATE_B_IDLE: case OTG_STATE_B_PERIPHERAL: - clear_bit(ID, &motg->inputs); + clear_bit(ID, &motg->inputs);*/ + set_bit(ID_A, &motg->inputs); break; - default: + /*default: goto out; } - break; + break;*/ default: goto out; } @@ -3356,8 +3360,9 @@ static int msm_otg_debugfs_init(struct msm_otg *motg) if (!msm_otg_dbg_root || IS_ERR(msm_otg_dbg_root)) return -ENODEV; - if (motg->pdata->mode == USB_OTG && - motg->pdata->otg_control == OTG_USER_CONTROL) { + // enable /sys/kernel/debug/msm_otg/host -ziddey + if (motg->pdata->mode == USB_OTG /*&& + motg->pdata->otg_control == OTG_USER_CONTROL*/) { msm_otg_dentry = debugfs_create_file("mode", S_IRUGO | S_IWUSR, msm_otg_dbg_root, motg, |