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path: root/drivers/usb/otg/mv_otg.c
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Diffstat (limited to 'drivers/usb/otg/mv_otg.c')
-rw-r--r--drivers/usb/otg/mv_otg.c110
1 files changed, 62 insertions, 48 deletions
diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c
index b5fbe1452ab0..6cc6c3ffbb83 100644
--- a/drivers/usb/otg/mv_otg.c
+++ b/drivers/usb/otg/mv_otg.c
@@ -55,16 +55,16 @@ static char *state_string[] = {
"a_vbus_err"
};
-static int mv_otg_set_vbus(struct otg_transceiver *otg, bool on)
+static int mv_otg_set_vbus(struct usb_otg *otg, bool on)
{
- struct mv_otg *mvotg = container_of(otg, struct mv_otg, otg);
+ struct mv_otg *mvotg = container_of(otg->phy, struct mv_otg, phy);
if (mvotg->pdata->set_vbus == NULL)
return -ENODEV;
return mvotg->pdata->set_vbus(on);
}
-static int mv_otg_set_host(struct otg_transceiver *otg,
+static int mv_otg_set_host(struct usb_otg *otg,
struct usb_bus *host)
{
otg->host = host;
@@ -72,7 +72,7 @@ static int mv_otg_set_host(struct otg_transceiver *otg,
return 0;
}
-static int mv_otg_set_peripheral(struct otg_transceiver *otg,
+static int mv_otg_set_peripheral(struct usb_otg *otg,
struct usb_gadget *gadget)
{
otg->gadget = gadget;
@@ -203,7 +203,7 @@ static void mv_otg_init_irq(struct mv_otg *mvotg)
static void mv_otg_start_host(struct mv_otg *mvotg, int on)
{
#ifdef CONFIG_USB
- struct otg_transceiver *otg = &mvotg->otg;
+ struct usb_otg *otg = mvotg->phy.otg;
struct usb_hcd *hcd;
if (!otg->host)
@@ -222,12 +222,12 @@ static void mv_otg_start_host(struct mv_otg *mvotg, int on)
static void mv_otg_start_periphrals(struct mv_otg *mvotg, int on)
{
- struct otg_transceiver *otg = &mvotg->otg;
+ struct usb_otg *otg = mvotg->phy.otg;
if (!otg->gadget)
return;
- dev_info(otg->dev, "gadget %s\n", on ? "on" : "off");
+ dev_info(mvotg->phy.dev, "gadget %s\n", on ? "on" : "off");
if (on)
usb_gadget_vbus_connect(otg->gadget);
@@ -343,69 +343,69 @@ static void mv_otg_update_inputs(struct mv_otg *mvotg)
static void mv_otg_update_state(struct mv_otg *mvotg)
{
struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl;
- struct otg_transceiver *otg = &mvotg->otg;
- int old_state = otg->state;
+ struct usb_phy *phy = &mvotg->phy;
+ int old_state = phy->state;
switch (old_state) {
case OTG_STATE_UNDEFINED:
- otg->state = OTG_STATE_B_IDLE;
+ phy->state = OTG_STATE_B_IDLE;
/* FALL THROUGH */
case OTG_STATE_B_IDLE:
if (otg_ctrl->id == 0)
- otg->state = OTG_STATE_A_IDLE;
+ phy->state = OTG_STATE_A_IDLE;
else if (otg_ctrl->b_sess_vld)
- otg->state = OTG_STATE_B_PERIPHERAL;
+ phy->state = OTG_STATE_B_PERIPHERAL;
break;
case OTG_STATE_B_PERIPHERAL:
if (!otg_ctrl->b_sess_vld || otg_ctrl->id == 0)
- otg->state = OTG_STATE_B_IDLE;
+ phy->state = OTG_STATE_B_IDLE;
break;
case OTG_STATE_A_IDLE:
if (otg_ctrl->id)
- otg->state = OTG_STATE_B_IDLE;
+ phy->state = OTG_STATE_B_IDLE;
else if (!(otg_ctrl->a_bus_drop) &&
(otg_ctrl->a_bus_req || otg_ctrl->a_srp_det))
- otg->state = OTG_STATE_A_WAIT_VRISE;
+ phy->state = OTG_STATE_A_WAIT_VRISE;
break;
case OTG_STATE_A_WAIT_VRISE:
if (otg_ctrl->a_vbus_vld)
- otg->state = OTG_STATE_A_WAIT_BCON;
+ phy->state = OTG_STATE_A_WAIT_BCON;
break;
case OTG_STATE_A_WAIT_BCON:
if (otg_ctrl->id || otg_ctrl->a_bus_drop
|| otg_ctrl->a_wait_bcon_timeout) {
mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER);
mvotg->otg_ctrl.a_wait_bcon_timeout = 0;
- otg->state = OTG_STATE_A_WAIT_VFALL;
+ phy->state = OTG_STATE_A_WAIT_VFALL;
otg_ctrl->a_bus_req = 0;
} else if (!otg_ctrl->a_vbus_vld) {
mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER);
mvotg->otg_ctrl.a_wait_bcon_timeout = 0;
- otg->state = OTG_STATE_A_VBUS_ERR;
+ phy->state = OTG_STATE_A_VBUS_ERR;
} else if (otg_ctrl->b_conn) {
mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER);
mvotg->otg_ctrl.a_wait_bcon_timeout = 0;
- otg->state = OTG_STATE_A_HOST;
+ phy->state = OTG_STATE_A_HOST;
}
break;
case OTG_STATE_A_HOST:
if (otg_ctrl->id || !otg_ctrl->b_conn
|| otg_ctrl->a_bus_drop)
- otg->state = OTG_STATE_A_WAIT_BCON;
+ phy->state = OTG_STATE_A_WAIT_BCON;
else if (!otg_ctrl->a_vbus_vld)
- otg->state = OTG_STATE_A_VBUS_ERR;
+ phy->state = OTG_STATE_A_VBUS_ERR;
break;
case OTG_STATE_A_WAIT_VFALL:
if (otg_ctrl->id
|| (!otg_ctrl->b_conn && otg_ctrl->a_sess_vld)
|| otg_ctrl->a_bus_req)
- otg->state = OTG_STATE_A_IDLE;
+ phy->state = OTG_STATE_A_IDLE;
break;
case OTG_STATE_A_VBUS_ERR:
if (otg_ctrl->id || otg_ctrl->a_clr_err
|| otg_ctrl->a_bus_drop) {
otg_ctrl->a_clr_err = 0;
- otg->state = OTG_STATE_A_WAIT_VFALL;
+ phy->state = OTG_STATE_A_WAIT_VFALL;
}
break;
default:
@@ -416,15 +416,17 @@ static void mv_otg_update_state(struct mv_otg *mvotg)
static void mv_otg_work(struct work_struct *work)
{
struct mv_otg *mvotg;
- struct otg_transceiver *otg;
+ struct usb_phy *phy;
+ struct usb_otg *otg;
int old_state;
mvotg = container_of((struct delayed_work *)work, struct mv_otg, work);
run:
/* work queue is single thread, or we need spin_lock to protect */
- otg = &mvotg->otg;
- old_state = otg->state;
+ phy = &mvotg->phy;
+ otg = phy->otg;
+ old_state = phy->state;
if (!mvotg->active)
return;
@@ -432,14 +434,14 @@ run:
mv_otg_update_inputs(mvotg);
mv_otg_update_state(mvotg);
- if (old_state != otg->state) {
+ if (old_state != phy->state) {
dev_info(&mvotg->pdev->dev, "change from state %s to %s\n",
state_string[old_state],
- state_string[otg->state]);
+ state_string[phy->state]);
- switch (otg->state) {
+ switch (phy->state) {
case OTG_STATE_B_IDLE:
- mvotg->otg.default_a = 0;
+ otg->default_a = 0;
if (old_state == OTG_STATE_B_PERIPHERAL)
mv_otg_start_periphrals(mvotg, 0);
mv_otg_reset(mvotg);
@@ -450,14 +452,14 @@ run:
mv_otg_start_periphrals(mvotg, 1);
break;
case OTG_STATE_A_IDLE:
- mvotg->otg.default_a = 1;
+ otg->default_a = 1;
mv_otg_enable(mvotg);
if (old_state == OTG_STATE_A_WAIT_VFALL)
mv_otg_start_host(mvotg, 0);
mv_otg_reset(mvotg);
break;
case OTG_STATE_A_WAIT_VRISE:
- mv_otg_set_vbus(&mvotg->otg, 1);
+ mv_otg_set_vbus(otg, 1);
break;
case OTG_STATE_A_WAIT_BCON:
if (old_state != OTG_STATE_A_HOST)
@@ -479,7 +481,7 @@ run:
* here. In fact, it need host driver to notify us.
*/
mvotg->otg_ctrl.b_conn = 0;
- mv_otg_set_vbus(&mvotg->otg, 0);
+ mv_otg_set_vbus(otg, 0);
break;
case OTG_STATE_A_VBUS_ERR:
break;
@@ -548,8 +550,8 @@ set_a_bus_req(struct device *dev, struct device_attribute *attr,
return -1;
/* We will use this interface to change to A device */
- if (mvotg->otg.state != OTG_STATE_B_IDLE
- && mvotg->otg.state != OTG_STATE_A_IDLE)
+ if (mvotg->phy.state != OTG_STATE_B_IDLE
+ && mvotg->phy.state != OTG_STATE_A_IDLE)
return -1;
/* The clock may disabled and we need to set irq for ID detected */
@@ -579,7 +581,7 @@ set_a_clr_err(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct mv_otg *mvotg = dev_get_drvdata(dev);
- if (!mvotg->otg.default_a)
+ if (!mvotg->phy.otg->default_a)
return -1;
if (count > 2)
@@ -615,7 +617,7 @@ set_a_bus_drop(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct mv_otg *mvotg = dev_get_drvdata(dev);
- if (!mvotg->otg.default_a)
+ if (!mvotg->phy.otg->default_a)
return -1;
if (count > 2)
@@ -688,9 +690,10 @@ int mv_otg_remove(struct platform_device *pdev)
for (clk_i = 0; clk_i <= mvotg->clknum; clk_i++)
clk_put(mvotg->clk[clk_i]);
- otg_set_transceiver(NULL);
+ usb_set_transceiver(NULL);
platform_set_drvdata(pdev, NULL);
+ kfree(mvotg->phy.otg);
kfree(mvotg);
return 0;
@@ -700,6 +703,7 @@ static int mv_otg_probe(struct platform_device *pdev)
{
struct mv_usb_platform_data *pdata = pdev->dev.platform_data;
struct mv_otg *mvotg;
+ struct usb_otg *otg;
struct resource *r;
int retval = 0, clk_i, i;
size_t size;
@@ -716,6 +720,12 @@ static int mv_otg_probe(struct platform_device *pdev)
return -ENOMEM;
}
+ otg = kzalloc(sizeof *otg, GFP_KERNEL);
+ if (!otg) {
+ kfree(mvotg);
+ return -ENOMEM;
+ }
+
platform_set_drvdata(pdev, mvotg);
mvotg->pdev = pdev;
@@ -741,12 +751,15 @@ static int mv_otg_probe(struct platform_device *pdev)
/* OTG common part */
mvotg->pdev = pdev;
- mvotg->otg.dev = &pdev->dev;
- mvotg->otg.label = driver_name;
- mvotg->otg.set_host = mv_otg_set_host;
- mvotg->otg.set_peripheral = mv_otg_set_peripheral;
- mvotg->otg.set_vbus = mv_otg_set_vbus;
- mvotg->otg.state = OTG_STATE_UNDEFINED;
+ mvotg->phy.dev = &pdev->dev;
+ mvotg->phy.otg = otg;
+ mvotg->phy.label = driver_name;
+ mvotg->phy.state = OTG_STATE_UNDEFINED;
+
+ otg->phy = &mvotg->phy;
+ otg->set_host = mv_otg_set_host;
+ otg->set_peripheral = mv_otg_set_peripheral;
+ otg->set_vbus = mv_otg_set_vbus;
for (i = 0; i < OTG_TIMER_NUM; i++)
init_timer(&mvotg->otg_ctrl.timer[i]);
@@ -840,7 +853,7 @@ static int mv_otg_probe(struct platform_device *pdev)
goto err_disable_clk;
}
- retval = otg_set_transceiver(&mvotg->otg);
+ retval = usb_set_transceiver(&mvotg->phy);
if (retval < 0) {
dev_err(&pdev->dev, "can't register transceiver, %d\n",
retval);
@@ -867,7 +880,7 @@ static int mv_otg_probe(struct platform_device *pdev)
return 0;
err_set_transceiver:
- otg_set_transceiver(NULL);
+ usb_set_transceiver(NULL);
err_free_irq:
free_irq(mvotg->irq, mvotg);
err_disable_clk:
@@ -888,6 +901,7 @@ err_put_clk:
clk_put(mvotg->clk[clk_i]);
platform_set_drvdata(pdev, NULL);
+ kfree(otg);
kfree(mvotg);
return retval;
@@ -898,10 +912,10 @@ static int mv_otg_suspend(struct platform_device *pdev, pm_message_t state)
{
struct mv_otg *mvotg = platform_get_drvdata(pdev);
- if (mvotg->otg.state != OTG_STATE_B_IDLE) {
+ if (mvotg->phy.state != OTG_STATE_B_IDLE) {
dev_info(&pdev->dev,
"OTG state is not B_IDLE, it is %d!\n",
- mvotg->otg.state);
+ mvotg->phy.state);
return -EAGAIN;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.