static int mhl_pf_switch_device_discovery(void *data,
int id,
void (*usb_notify_cb)(void *, int),
void *ctx)
{
int rc = MHL_USB_NON_INUSE;
pr_info("%s()\n", __func__);
if (id) {
/* todo : this logic can be reused in 8620? */
pr_debug("%s: USB ID pin high. id=%d\n", __func__, id);
return id;
}
if (!usb_notify_cb) {
pr_warn("%s: cb || ctrl is NULL\n", __func__);
return -EINVAL;
}
isDiscoveryCalled = true;
usb_ctx = ctx;
/* switch gpio to MHL from USB */
/* todo : must use dtsi for gpio */
gpio_set_value(GPIO_MHL_SWITCH_SEL_1, 1);
gpio_set_value(GPIO_MHL_SWITCH_SEL_2, 1);
pr_debug("%s: gpio(%d) : %d", __func__,
GPIO_MHL_SWITCH_SEL_1,
gpio_get_value(GPIO_MHL_SWITCH_SEL_1));
pr_debug("%s: gpio(%d) : %d", __func__,
GPIO_MHL_SWITCH_SEL_2,
gpio_get_value(GPIO_MHL_SWITCH_SEL_2));
msleep(20);
if (!notify_usb_online)
notify_usb_online = usb_notify_cb;
if (device_discovery_cb) {
rc = device_discovery_cb(context_cb);
if (rc == MHL_USB_INUSE) {
if (notify_usb_online)
notify_usb_online(usb_ctx, 1);
}
} else {
/*
* Even if there is no registerred call back,
* MHL_USB_INUSE must be returned since the
* MHL ko object is supposed to be installed
* at boot timing and immediately registerring
* its call back. So this API must return INUSE
* to usb.
*/
pr_warn("%s: no registerred cb.\n", __func__);
rc = MHL_USB_INUSE;
}
pr_info("%s: mhl is inuse ? : %d\n", __func__, (rc == MHL_USB_INUSE));
return rc;
}
/**
* mhl_pf_switch_register_cb: register
* a call back for notifying device discovery.
* The client should start device discovery
* when call the callback and must notify the
* result. Only one registration is acceptable.
* When the register API is called before unregister,
* the previous call back and context will be
* replace with new registration.
*
* @device_discovery - call back API. Must not be NULL.
* @context - it can be NULL. It is notified through the call back API.
*
*/
void mhl_pf_switch_register_cb(int (*device_discovery)(void *context),
void *context)
{
pr_info("%s:\n", __func__);
device_discovery_cb = device_discovery;
context_cb = context;
if (isDiscoveryCalled)
device_discovery_cb(context_cb);
}
/**
* mhl_pf_switch_register_cb: register
* a call back for notifying device discovery.
* The client should start device discovery
* when call the callback and must notify the
* result. Only one registration is acceptable.
* When the register API is called before unregister,
* the previous call back and context will be
* replace with new registration.
*
* @device_discovery - call back API. Must not be NULL.
* @context - it can be NULL. It is notified through the call back API.
*
*/
void mhl_pf_switch_register_cb(int (*device_discovery)(void *context),
void *context)
{
int rc = MHL_USB_NON_INUSE;
pr_info("%s:\n", __func__);
device_discovery_cb = device_discovery;
context_cb = context;
if (isDiscoveryCalled) {
rc = device_discovery_cb(context_cb);
if (rc == MHL_USB_INUSE) {
if (notify_usb_online)
notify_usb_online(usb_ctx, 1);
}
}
}
static int mhl_pf_switch_device_discovery(void *data,
int id,
void (*usb_notify_cb)(void *, int), void *ctx)
{
int rc = MHL_USB_NON_INUSE;
pr_info("%s()\n", __func__);
if (id) {
/* todo : this logic can be reused in 8620? */
pr_debug("%s: USB ID pin high. id=%d\n", __func__, id);
return id;
}
if (!usb_notify_cb) {
pr_warn("%s: cb || ctrl is NULL\n", __func__);
return -EINVAL;
}
isDiscoveryCalled = true;
usb_ctx = ctx;
mhl_pf_switch_gpio_to_mhl();
if (!notify_usb_online)
notify_usb_online = usb_notify_cb;
if (device_discovery_cb) {
rc = device_discovery_cb(context_cb);
} else {
/*
* Even if there is no registerred call back,
* MHL_USB_INUSE must be returned since the
* MHL ko object is supposed to be installed
* at boot timing and immediately registerring
* its call back. So this API must return INUSE
* to usb.
*/
pr_warn("%s: no registerred cb.\n", __func__);
rc = MHL_USB_INUSE;
}
pr_info("%s: mhl is inuse ? : %d\n", __func__, (rc == MHL_USB_INUSE));
if (rc != MHL_USB_INUSE)
mhl_pf_switch_gpio_to_usb();
return rc;
}
/**
* mhl_pf_switch_register_cb: register
* a call back for notifying device discovery.
* The client should start device discovery
* when call the callback and must notify the
* result. Only one registration is acceptable.
* When the register API is called before unregister,
* the previous call back and context will be
* replace with new registration.
*
* @device_discovery - call back API. Must not be NULL.
* @context - it can be NULL. It is notified through the call back API.
*
*/
void mhl_pf_switch_register_cb(int (*device_discovery)(void *context),
void *context)
{
int rc = MHL_USB_NON_INUSE;
pr_debug("%s:\n", __func__);
device_discovery_cb = device_discovery;
context_cb = context;
if (isDiscoveryCalled) {
rc = device_discovery_cb(context_cb);
if (rc == MHL_USB_INUSE) {
if (notify_usb_online) {
/* Found MHL device */
qpnp_chg_notify_mhl_state(1);
notify_usb_online(usb_ctx, 1);
}
}
}
}