[V8 PATCH 14/16] usb: otg: mv_otg: add extern chip support
Chao Xie
chao.xie at marvell.com
Wed Feb 20 23:07:24 EST 2013
It does the similar things as what we do for udc driver.
Signed-off-by: Chao Xie <chao.xie at marvell.com>
---
drivers/usb/otg/mv_otg.c | 72 +++++++++++++++++++++++----------------------
drivers/usb/otg/mv_otg.h | 3 ++
2 files changed, 40 insertions(+), 35 deletions(-)
diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c
index 7282b0d..9b3789a 100644
--- a/drivers/usb/otg/mv_otg.c
+++ b/drivers/usb/otg/mv_otg.c
@@ -59,10 +59,13 @@ static char *state_string[] = {
static int mv_otg_set_vbus(struct usb_otg *otg, bool on)
{
struct mv_otg *mvotg = container_of(otg->phy, struct mv_otg, phy);
- if (mvotg->pdata->set_vbus == NULL)
+ struct mv_usb2_phy *mv_phy = container_of(mvotg->outer_phy,
+ struct mv_usb2_phy, phy);
+
+ if (!mv_usb2_has_extern_call(mv_phy, vbus, set_vbus))
return -ENODEV;
- return mvotg->pdata->set_vbus(on);
+ return mv_usb2_extern_call(mv_phy, vbus, set_vbus, on);
}
static int mv_otg_set_host(struct usb_otg *otg,
@@ -184,14 +187,14 @@ static void mv_otg_init_irq(struct mv_otg *mvotg)
mvotg->irq_status = OTGSC_INTSTS_A_SESSION_VALID
| OTGSC_INTSTS_A_VBUS_VALID;
- if (mvotg->pdata->vbus == NULL) {
+ if (!(mvotg->extern_attr & MV_USB_HAS_VBUS_DETECTION)) {
mvotg->irq_en |= OTGSC_INTR_B_SESSION_VALID
| OTGSC_INTR_B_SESSION_END;
mvotg->irq_status |= OTGSC_INTSTS_B_SESSION_VALID
| OTGSC_INTSTS_B_SESSION_END;
}
- if (mvotg->pdata->id == NULL) {
+ if (!(mvotg->extern_attr & MV_USB_HAS_IDPIN_DETECTION)) {
mvotg->irq_en |= OTGSC_INTR_USB_ID;
mvotg->irq_status |= OTGSC_INTSTS_USB_ID;
}
@@ -303,11 +306,16 @@ static void mv_otg_update_inputs(struct mv_otg *mvotg)
{
struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl;
u32 otgsc;
+ unsigned int vbus, idpin;
+ struct mv_usb2_phy *mv_phy = container_of(mvotg->outer_phy,
+ struct mv_usb2_phy, phy);
otgsc = readl(&mvotg->op_regs->otgsc);
- if (mvotg->pdata->vbus) {
- if (mvotg->pdata->vbus->poll() == VBUS_HIGH) {
+ if (mvotg->extern_attr & MV_USB_HAS_VBUS_DETECTION) {
+ if (mv_usb2_extern_call(mv_phy, vbus, get_vbus, &vbus))
+ return;
+ if (vbus == VBUS_HIGH) {
otg_ctrl->b_sess_vld = 1;
otg_ctrl->b_sess_end = 0;
} else {
@@ -319,8 +327,11 @@ static void mv_otg_update_inputs(struct mv_otg *mvotg)
otg_ctrl->b_sess_end = !!(otgsc & OTGSC_STS_B_SESSION_END);
}
- if (mvotg->pdata->id)
- otg_ctrl->id = !!mvotg->pdata->id->poll();
+ if (mvotg->extern_attr & MV_USB_HAS_IDPIN_DETECTION) {
+ if (mv_usb2_extern_call(mv_phy, idpin, get_idpin, &idpin))
+ return;
+ otg_ctrl->id = !!idpin;
+ }
else
otg_ctrl->id = !!(otgsc & OTGSC_STS_USB_ID);
@@ -502,7 +513,7 @@ static irqreturn_t mv_otg_irq(int irq, void *dev)
* if we have vbus, then the vbus detection for B-device
* will be done by mv_otg_inputs_irq().
*/
- if (mvotg->pdata->vbus)
+ if (mvotg->extern_attr & MV_USB_HAS_VBUS_DETECTION)
if ((otgsc & OTGSC_STS_USB_ID) &&
!(otgsc & OTGSC_INTSTS_USB_ID))
return IRQ_NONE;
@@ -515,9 +526,10 @@ static irqreturn_t mv_otg_irq(int irq, void *dev)
return IRQ_HANDLED;
}
-static irqreturn_t mv_otg_inputs_irq(int irq, void *dev)
+static int mv_otg_notifier_call(struct notifier_block *nb,
+ unsigned long val, void *v)
{
- struct mv_otg *mvotg = dev;
+ struct mv_otg *mvotg = container_of(nb, struct mv_otg, notifier);
/* The clock may disabled at this time */
if (!mvotg->active) {
@@ -527,7 +539,7 @@ static irqreturn_t mv_otg_inputs_irq(int irq, void *dev)
mv_otg_run_state_machine(mvotg, 0);
- return IRQ_HANDLED;
+ return 0;
}
static ssize_t
@@ -660,9 +672,15 @@ static struct attribute_group inputs_attr_group = {
int mv_otg_remove(struct platform_device *pdev)
{
struct mv_otg *mvotg = platform_get_drvdata(pdev);
+ struct mv_usb2_phy *mv_phy = container_of(mvotg->outer_phy,
+ struct mv_usb2_phy, phy);
sysfs_remove_group(&mvotg->pdev->dev.kobj, &inputs_attr_group);
+ if ((mvotg->extern_attr & MV_USB_HAS_VBUS_DETECTION) ||
+ (mvotg->extern_attr & MV_USB_HAS_IDPIN_DETECTION))
+ mv_usb2_unregister_notifier(mv_phy, &mvotg->notifier);
+
if (mvotg->qwork) {
flush_workqueue(mvotg->qwork);
destroy_workqueue(mvotg->qwork);
@@ -682,6 +700,7 @@ static int mv_otg_probe(struct platform_device *pdev)
struct mv_otg *mvotg;
struct usb_otg *otg;
struct resource *r;
+ struct mv_usb2_phy *mv_phy;
int retval = 0, clk_i, i;
size_t size;
@@ -704,6 +723,7 @@ static int mv_otg_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mvotg);
mvotg->pdev = pdev;
+ mvotg->extern_attr = pdata->extern_attr;
mvotg->pdata = pdata;
mvotg->clknum = pdata->clknum;
@@ -760,6 +780,7 @@ static int mv_otg_probe(struct platform_device *pdev)
retval = PTR_ERR(mvotg->outer_phy);
goto err_destroy_workqueue;
}
+ mv_phy = container_of(mvotg->outer_phy, struct mv_usb2_phy, phy);
/* we will acces controller register, so enable the udc controller */
retval = mv_otg_enable_internal(mvotg);
@@ -772,29 +793,10 @@ static int mv_otg_probe(struct platform_device *pdev)
(struct mv_otg_regs __iomem *) ((unsigned long) mvotg->cap_regs
+ (readl(mvotg->cap_regs) & CAPLENGTH_MASK));
- if (pdata->id) {
- retval = devm_request_threaded_irq(&pdev->dev, pdata->id->irq,
- NULL, mv_otg_inputs_irq,
- IRQF_ONESHOT, "id", mvotg);
- if (retval) {
- dev_info(&pdev->dev,
- "Failed to request irq for ID\n");
- pdata->id = NULL;
- }
- }
-
- if (pdata->vbus) {
- mvotg->clock_gating = 1;
- retval = devm_request_threaded_irq(&pdev->dev, pdata->vbus->irq,
- NULL, mv_otg_inputs_irq,
- IRQF_ONESHOT, "vbus", mvotg);
- if (retval) {
- dev_info(&pdev->dev,
- "Failed to request irq for VBUS, "
- "disable clock gating\n");
- mvotg->clock_gating = 0;
- pdata->vbus = NULL;
- }
+ if ((mvotg->extern_attr & MV_USB_HAS_VBUS_DETECTION) ||
+ (mvotg->extern_attr & MV_USB_HAS_IDPIN_DETECTION)) {
+ mvotg->notifier.notifier_call = mv_otg_notifier_call;
+ mv_usb2_register_notifier(mv_phy, &mvotg->notifier);
}
if (pdata->disable_otg_clock_gating)
diff --git a/drivers/usb/otg/mv_otg.h b/drivers/usb/otg/mv_otg.h
index 65e7fd1..2a9ecae 100644
--- a/drivers/usb/otg/mv_otg.h
+++ b/drivers/usb/otg/mv_otg.h
@@ -149,6 +149,9 @@ struct mv_otg {
u32 irq_status;
u32 irq_en;
+ unsigned int extern_attr;
+ struct notifier_block notifier;
+
struct delayed_work work;
struct workqueue_struct *qwork;
--
1.7.4.1
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