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author | Kishon Vijay Abraham I <kishon@ti.com> | 2012-06-22 12:10:52 (GMT) |
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committer | Felipe Balbi <balbi@ti.com> | 2012-06-25 11:07:39 (GMT) |
commit | c9721438c009adf8e81d376839ed037c53b9b8d9 (patch) | |
tree | 3144ac8f042bd8366352e03eab530de3f9676f00 /drivers/usb/musb/omap2430.c | |
parent | 1e5acb8d6113a0f159257845e153d5b870ca618a (diff) | |
download | linux-fsl-qoriq-c9721438c009adf8e81d376839ed037c53b9b8d9.tar.xz |
usb: musb: twl: use mailbox API to send VBUS or ID events
The atomic notifier from twl4030/twl6030 to notifiy VBUS and ID events,
is replaced by a direct call to omap musb blue.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/omap2430.c')
-rw-r--r-- | drivers/usb/musb/omap2430.c | 94 |
1 files changed, 59 insertions, 35 deletions
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index f40c805..0636870 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" @@ -41,11 +42,13 @@ struct omap2430_glue { struct device *dev; struct platform_device *musb; - u8 xceiv_event; + 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) @@ -225,54 +228,58 @@ 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 device *dev = musb->controller; - struct omap2430_glue *glue = dev_get_drvdata(dev->parent); + struct omap2430_glue *glue = _glue; + struct musb *musb = glue_to_musb(glue); - glue->xceiv_event = event; - schedule_work(&glue->omap_musb_mailbox_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 omap_musb_mailbox_work(struct work_struct *data_notifier_work) +static void omap_musb_set_mailbox(struct omap2430_glue *glue) { - struct omap2430_glue *glue = container_of(data_notifier_work, - struct omap2430_glue, omap_musb_mailbox_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; - switch (glue->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"); + 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"); + 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) { @@ -282,15 +289,24 @@ static void omap_musb_mailbox_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; @@ -330,14 +346,11 @@ 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; @@ -350,12 +363,13 @@ 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; @@ -374,7 +388,7 @@ static void omap2430_musb_enable(struct musb *musb) } break; - case USB_EVENT_VBUS: + case OMAP_MUSB_VBUS_VALID: usb_phy_init(musb->xceiv); break; @@ -385,7 +399,10 @@ 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); } @@ -439,11 +456,18 @@ 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, @@ -552,7 +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) { |