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usb: mtu3: use FORCE/RG_IDDIG to implement manual DRD switch

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In order to keep manual DRD switch independent on IDDIG interrupt,
make use of FORCE/RG_IDDIG instead of IDDIG EINT interrupt to
implement manual DRD switch function.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Chunfeng Yun
2017-10-13 17:10:42 +08:00
committed by Felipe Balbi
parent 1a46dfea08
commit c776f2c3e8
6 changed files with 73 additions and 55 deletions
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18
drivers/usb/mtu3/mtu3.h
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@@ -114,6 +114,19 @@ enum mtu3_g_ep0_state {
MU3D_EP0_STATE_STALL,
};
/**
* MTU3_DR_FORCE_NONE: automatically switch host and periperal mode
* by IDPIN signal.
* MTU3_DR_FORCE_HOST: force to enter host mode and override OTG
* IDPIN signal.
* MTU3_DR_FORCE_DEVICE: force to enter peripheral mode.
*/
enum mtu3_dr_force_mode {
MTU3_DR_FORCE_NONE = 0,
MTU3_DR_FORCE_HOST,
MTU3_DR_FORCE_DEVICE,
};
/**
* @base: the base address of fifo
* @limit: the bitmap size in bits
@@ -196,7 +209,6 @@ struct mtu3_gpd_ring {
* xHCI driver initialization, it's necessary for system bootup
* as device.
* @is_u3_drd: whether port0 supports usb3.0 dual-role device or not
* @id_*: used to maually switch between host and device modes by idpin
* @manual_drd_enabled: it's true when supports dual-role device by debugfs
* to switch host/device modes depending on user input.
*/
@@ -207,10 +219,6 @@ struct otg_switch_mtk {
struct notifier_block id_nb;
struct delayed_work extcon_reg_dwork;
bool is_u3_drd;
/* dual-role switch by debugfs */
struct pinctrl *id_pinctrl;
struct pinctrl_state *id_float;
struct pinctrl_state *id_ground;
bool manual_drd_enabled;
};