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path: root/drivers/usb/musb/omap2430.c
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Diffstat (limited to 'drivers/usb/musb/omap2430.c')
-rw-r--r--drivers/usb/musb/omap2430.c124
1 files changed, 77 insertions, 47 deletions
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index c7785e8..5fdb9da 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -34,6 +34,7 @@
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/err.h>
+#include <linux/usb/musb-omap.h>
#include "musb_core.h"
#include "omap2430.h"
@@ -41,9 +42,13 @@
struct omap2430_glue {
struct device *dev;
struct platform_device *musb;
+ enum omap_musb_vbus_id_status status;
+ struct work_struct omap_musb_mailbox_work;
};
#define glue_to_musb(g) platform_get_drvdata(g->musb)
+struct omap2430_glue *_glue;
+
static struct timer_list musb_idle_timer;
static void musb_do_idle(unsigned long _musb)
@@ -223,50 +228,63 @@ static inline void omap2430_low_level_init(struct musb *musb)
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
-static int musb_otg_notifications(struct notifier_block *nb,
- unsigned long event, void *unused)
+void omap_musb_mailbox(enum omap_musb_vbus_id_status status)
{
- struct musb *musb = container_of(nb, struct musb, nb);
+ struct omap2430_glue *glue = _glue;
+ struct musb *musb = glue_to_musb(glue);
- musb->xceiv_event = event;
- schedule_work(&musb->otg_notifier_work);
+ glue->status = status;
+ if (!musb) {
+ dev_err(glue->dev, "musb core is not yet ready\n");
+ return;
+ }
- return NOTIFY_OK;
+ schedule_work(&glue->omap_musb_mailbox_work);
}
+EXPORT_SYMBOL_GPL(omap_musb_mailbox);
-static void musb_otg_notifier_work(struct work_struct *data_notifier_work)
+static void omap_musb_set_mailbox(struct omap2430_glue *glue)
{
- struct musb *musb = container_of(data_notifier_work, struct musb, otg_notifier_work);
+ struct musb *musb = glue_to_musb(glue);
struct device *dev = musb->controller;
struct musb_hdrc_platform_data *pdata = dev->platform_data;
struct omap_musb_board_data *data = pdata->board_data;
+ struct usb_otg *otg = musb->xceiv->otg;
- switch (musb->xceiv_event) {
- case USB_EVENT_ID:
- dev_dbg(musb->controller, "ID GND\n");
+ switch (glue->status) {
+ case OMAP_MUSB_ID_GROUND:
+ dev_dbg(dev, "ID GND\n");
+ otg->default_a = true;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
+ musb->xceiv->last_event = USB_EVENT_ID;
if (!is_otg_enabled(musb) || musb->gadget_driver) {
- pm_runtime_get_sync(musb->controller);
+ pm_runtime_get_sync(dev);
usb_phy_init(musb->xceiv);
omap2430_musb_set_vbus(musb, 1);
}
break;
- case USB_EVENT_VBUS:
- dev_dbg(musb->controller, "VBUS Connect\n");
+ case OMAP_MUSB_VBUS_VALID:
+ dev_dbg(dev, "VBUS Connect\n");
+ otg->default_a = false;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
+ musb->xceiv->last_event = USB_EVENT_VBUS;
if (musb->gadget_driver)
- pm_runtime_get_sync(musb->controller);
+ pm_runtime_get_sync(dev);
usb_phy_init(musb->xceiv);
break;
- case USB_EVENT_NONE:
- dev_dbg(musb->controller, "VBUS Disconnect\n");
+ case OMAP_MUSB_ID_FLOAT:
+ case OMAP_MUSB_VBUS_OFF:
+ dev_dbg(dev, "VBUS Disconnect\n");
+ musb->xceiv->last_event = USB_EVENT_NONE;
if (is_otg_enabled(musb) || is_peripheral_enabled(musb))
if (musb->gadget_driver) {
- pm_runtime_mark_last_busy(musb->controller);
- pm_runtime_put_autosuspend(musb->controller);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
}
if (data->interface_type == MUSB_INTERFACE_UTMI) {
@@ -276,15 +294,24 @@ static void musb_otg_notifier_work(struct work_struct *data_notifier_work)
usb_phy_shutdown(musb->xceiv);
break;
default:
- dev_dbg(musb->controller, "ID float\n");
+ dev_dbg(dev, "ID float\n");
}
}
+
+static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
+{
+ struct omap2430_glue *glue = container_of(mailbox_work,
+ struct omap2430_glue, omap_musb_mailbox_work);
+ omap_musb_set_mailbox(glue);
+}
+
static int omap2430_musb_init(struct musb *musb)
{
u32 l;
int status = 0;
struct device *dev = musb->controller;
+ struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
struct musb_hdrc_platform_data *plat = dev->platform_data;
struct omap_musb_board_data *data = plat->board_data;
@@ -292,14 +319,12 @@ static int omap2430_musb_init(struct musb *musb)
* up through ULPI. TWL4030-family PMICs include one,
* which needs a driver, drivers aren't always needed.
*/
- musb->xceiv = usb_get_transceiver();
- if (!musb->xceiv) {
+ musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
+ if (IS_ERR_OR_NULL(musb->xceiv)) {
pr_err("HS USB OTG: no transceiver configured\n");
return -ENODEV;
}
- INIT_WORK(&musb->otg_notifier_work, musb_otg_notifier_work);
-
status = pm_runtime_get_sync(dev);
if (status < 0) {
dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
@@ -326,14 +351,11 @@ static int omap2430_musb_init(struct musb *musb)
musb_readl(musb->mregs, OTG_INTERFSEL),
musb_readl(musb->mregs, OTG_SIMENABLE));
- musb->nb.notifier_call = musb_otg_notifications;
- status = usb_register_notifier(musb->xceiv, &musb->nb);
-
- if (status)
- dev_dbg(musb->controller, "notification register failed\n");
-
setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
+ if (glue->status != OMAP_MUSB_UNKNOWN)
+ omap_musb_set_mailbox(glue);
+
pm_runtime_put_noidle(musb->controller);
return 0;
@@ -346,12 +368,13 @@ static void omap2430_musb_enable(struct musb *musb)
u8 devctl;
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
struct device *dev = musb->controller;
+ struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
struct musb_hdrc_platform_data *pdata = dev->platform_data;
struct omap_musb_board_data *data = pdata->board_data;
- switch (musb->xceiv->last_event) {
+ switch (glue->status) {
- case USB_EVENT_ID:
+ case OMAP_MUSB_ID_GROUND:
usb_phy_init(musb->xceiv);
if (data->interface_type != MUSB_INTERFACE_UTMI)
break;
@@ -370,7 +393,7 @@ static void omap2430_musb_enable(struct musb *musb)
}
break;
- case USB_EVENT_VBUS:
+ case OMAP_MUSB_VBUS_VALID:
usb_phy_init(musb->xceiv);
break;
@@ -381,17 +404,18 @@ static void omap2430_musb_enable(struct musb *musb)
static void omap2430_musb_disable(struct musb *musb)
{
- if (musb->xceiv->last_event)
+ struct device *dev = musb->controller;
+ struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
+
+ if (glue->status != OMAP_MUSB_UNKNOWN)
usb_phy_shutdown(musb->xceiv);
}
static int omap2430_musb_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
- cancel_work_sync(&musb->otg_notifier_work);
omap2430_low_level_exit(musb);
- usb_put_transceiver(musb->xceiv);
return 0;
}
@@ -418,7 +442,7 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
struct omap2430_glue *glue;
int ret = -ENOMEM;
- glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
if (!glue) {
dev_err(&pdev->dev, "failed to allocate glue context\n");
goto err0;
@@ -427,7 +451,7 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
musb = platform_device_alloc("musb-hdrc", -1);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err1;
+ goto err0;
}
musb->dev.parent = &pdev->dev;
@@ -436,22 +460,31 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
glue->dev = &pdev->dev;
glue->musb = musb;
+ glue->status = OMAP_MUSB_UNKNOWN;
pdata->platform_ops = &omap2430_ops;
platform_set_drvdata(pdev, glue);
+ /*
+ * REVISIT if we ever have two instances of the wrapper, we will be
+ * in big trouble
+ */
+ _glue = glue;
+
+ INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
+
ret = platform_device_add_resources(musb, pdev->resource,
pdev->num_resources);
if (ret) {
dev_err(&pdev->dev, "failed to add resources\n");
- goto err2;
+ goto err1;
}
ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
if (ret) {
dev_err(&pdev->dev, "failed to add platform_data\n");
- goto err2;
+ goto err1;
}
pm_runtime_enable(&pdev->dev);
@@ -459,16 +492,13 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
ret = platform_device_add(musb);
if (ret) {
dev_err(&pdev->dev, "failed to register musb device\n");
- goto err2;
+ goto err1;
}
return 0;
-err2:
- platform_device_put(musb);
-
err1:
- kfree(glue);
+ platform_device_put(musb);
err0:
return ret;
@@ -478,9 +508,9 @@ static int __devexit omap2430_remove(struct platform_device *pdev)
{
struct omap2430_glue *glue = platform_get_drvdata(pdev);
+ cancel_work_sync(&glue->omap_musb_mailbox_work);
platform_device_del(glue->musb);
platform_device_put(glue->musb);
- kfree(glue);
return 0;
}
@@ -546,7 +576,7 @@ static int __init omap2430_init(void)
{
return platform_driver_register(&omap2430_driver);
}
-module_init(omap2430_init);
+subsys_initcall(omap2430_init);
static void __exit omap2430_exit(void)
{
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