diff options
Diffstat (limited to 'drivers/phy/ti/phy-twl4030-usb.c')
| -rw-r--r-- | drivers/phy/ti/phy-twl4030-usb.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/phy/ti/phy-twl4030-usb.c b/drivers/phy/ti/phy-twl4030-usb.c index 9887f908f540..a26aec3ab29e 100644 --- a/drivers/phy/ti/phy-twl4030-usb.c +++ b/drivers/phy/ti/phy-twl4030-usb.c @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/workqueue.h> #include <linux/io.h> @@ -162,6 +163,8 @@ struct twl4030_usb { atomic_t connected; bool vbus_supplied; bool musb_mailbox_pending; + unsigned long runtime_suspended:1; + unsigned long needs_resume:1; struct delayed_work id_workaround_work; }; @@ -384,6 +387,9 @@ static void __twl4030_phy_power(struct twl4030_usb *twl, int on) WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0); } +static int twl4030_usb_runtime_suspend(struct device *dev); +static int twl4030_usb_runtime_resume(struct device *dev); + static int __maybe_unused twl4030_usb_suspend(struct device *dev) { struct twl4030_usb *twl = dev_get_drvdata(dev); @@ -395,6 +401,10 @@ static int __maybe_unused twl4030_usb_suspend(struct device *dev) */ dev_dbg(twl->dev, "%s\n", __func__); disable_irq(twl->irq); + if (!twl->runtime_suspended && !atomic_read(&twl->connected)) { + twl4030_usb_runtime_suspend(dev); + twl->needs_resume = 1; + } return 0; } @@ -405,9 +415,13 @@ static int __maybe_unused twl4030_usb_resume(struct device *dev) dev_dbg(twl->dev, "%s\n", __func__); enable_irq(twl->irq); + if (twl->needs_resume) + twl4030_usb_runtime_resume(dev); /* check whether cable status changed */ twl4030_usb_irq(0, twl); + twl->runtime_suspended = 0; + return 0; } @@ -422,6 +436,8 @@ static int __maybe_unused twl4030_usb_runtime_suspend(struct device *dev) regulator_disable(twl->usb1v8); regulator_disable(twl->usb3v1); + twl->runtime_suspended = 1; + return 0; } @@ -544,8 +560,8 @@ static int twl4030_usb_ldo_init(struct twl4030_usb *twl) return 0; } -static ssize_t twl4030_usb_vbus_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t vbus_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct twl4030_usb *twl = dev_get_drvdata(dev); int ret = -EINVAL; @@ -557,7 +573,7 @@ static ssize_t twl4030_usb_vbus_show(struct device *dev, return ret; } -static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL); +static DEVICE_ATTR_RO(vbus); static irqreturn_t twl4030_usb_irq(int irq, void *_twl) { @@ -768,18 +784,17 @@ static int twl4030_usb_probe(struct platform_device *pdev) pm_runtime_mark_last_busy(&pdev->dev); pm_runtime_put_autosuspend(twl->dev); - dev_info(&pdev->dev, "Initialized TWL4030 USB module\n"); return 0; } -static int twl4030_usb_remove(struct platform_device *pdev) +static void twl4030_usb_remove(struct platform_device *pdev) { struct twl4030_usb *twl = platform_get_drvdata(pdev); int val; usb_remove_phy(&twl->phy); pm_runtime_get_sync(twl->dev); - cancel_delayed_work(&twl->id_workaround_work); + cancel_delayed_work_sync(&twl->id_workaround_work); device_remove_file(twl->dev, &dev_attr_vbus); /* set transceiver mode to power on defaults */ @@ -806,8 +821,6 @@ static int twl4030_usb_remove(struct platform_device *pdev) /* disable complete OTG block */ twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - - return 0; } #ifdef CONFIG_OF |