diff options
Diffstat (limited to 'drivers/usb/gadget/udc/renesas_usb3.c')
| -rw-r--r-- | drivers/usb/gadget/udc/renesas_usb3.c | 80 |
1 files changed, 64 insertions, 16 deletions
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 63a206122058..bc37f40baacf 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -1,22 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Renesas USB3.0 Peripheral driver (USB gadget) * - * Copyright (C) 2015 Renesas Electronics Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. + * Copyright (C) 2015-2017 Renesas Electronics Corporation */ #include <linux/debugfs.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/err.h> -#include <linux/extcon.h> +#include <linux/extcon-provider.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/sizes.h> @@ -334,6 +332,7 @@ struct renesas_usb3 { struct usb_gadget_driver *driver; struct extcon_dev *extcon; struct work_struct extcon_work; + struct phy *phy; struct renesas_usb3_ep *usb3_ep; int num_usb3_eps; @@ -2056,7 +2055,7 @@ static u32 usb3_calc_rammap_val(struct renesas_usb3_ep *usb3_ep, const struct usb_endpoint_descriptor *desc) { int i; - const u32 max_packet_array[] = {8, 16, 32, 64, 512}; + static const u32 max_packet_array[] = {8, 16, 32, 64, 512}; u32 mpkt = PN_RAMMAP_MPKT(1024); for (i = 0; i < ARRAY_SIZE(max_packet_array); i++) { @@ -2239,7 +2238,9 @@ static int renesas_usb3_start(struct usb_gadget *gadget, /* hook up the driver */ usb3->driver = driver; - pm_runtime_enable(usb3_to_dev(usb3)); + if (usb3->phy) + phy_init(usb3->phy); + pm_runtime_get_sync(usb3_to_dev(usb3)); renesas_usb3_init_controller(usb3); @@ -2256,8 +2257,10 @@ static int renesas_usb3_stop(struct usb_gadget *gadget) usb3->driver = NULL; renesas_usb3_stop_controller(usb3); + if (usb3->phy) + phy_exit(usb3->phy); + pm_runtime_put(usb3_to_dev(usb3)); - pm_runtime_disable(usb3_to_dev(usb3)); return 0; } @@ -2405,6 +2408,9 @@ static int renesas_usb3_remove(struct platform_device *pdev) renesas_usb3_dma_free_prd(usb3, &pdev->dev); __renesas_usb3_ep_free_request(usb3->ep0_req); + if (usb3->phy) + phy_put(usb3->phy); + pm_runtime_disable(usb3_to_dev(usb3)); return 0; } @@ -2560,20 +2566,15 @@ static int renesas_usb3_probe(struct platform_device *pdev) { struct renesas_usb3 *usb3; struct resource *res; - const struct of_device_id *match; int irq, ret; const struct renesas_usb3_priv *priv; const struct soc_device_attribute *attr; - match = of_match_node(usb3_of_match, pdev->dev.of_node); - if (!match) - return -ENODEV; - attr = soc_device_match(renesas_usb3_quirks_match); if (attr) priv = attr->data; else - priv = match->data; + priv = of_device_get_match_data(&pdev->dev); irq = platform_get_irq(pdev, 0); if (irq < 0) { @@ -2635,11 +2636,20 @@ static int renesas_usb3_probe(struct platform_device *pdev) if (ret < 0) goto err_dev_create; + /* + * This is an optional. So, if this driver cannot get a phy, + * this driver will not handle a phy anymore. + */ + usb3->phy = devm_phy_get(&pdev->dev, "usb"); + if (IS_ERR(usb3->phy)) + usb3->phy = NULL; + usb3->workaround_for_vbus = priv->workaround_for_vbus; renesas_usb3_debugfs_init(usb3, &pdev->dev); - dev_info(&pdev->dev, "probed\n"); + dev_info(&pdev->dev, "probed%s\n", usb3->phy ? " with phy" : ""); + pm_runtime_enable(usb3_to_dev(usb3)); return 0; @@ -2655,11 +2665,49 @@ err_alloc_prd: return ret; } +#ifdef CONFIG_PM_SLEEP +static int renesas_usb3_suspend(struct device *dev) +{ + struct renesas_usb3 *usb3 = dev_get_drvdata(dev); + + /* Not started */ + if (!usb3->driver) + return 0; + + renesas_usb3_stop_controller(usb3); + if (usb3->phy) + phy_exit(usb3->phy); + pm_runtime_put(dev); + + return 0; +} + +static int renesas_usb3_resume(struct device *dev) +{ + struct renesas_usb3 *usb3 = dev_get_drvdata(dev); + + /* Not started */ + if (!usb3->driver) + return 0; + + if (usb3->phy) + phy_init(usb3->phy); + pm_runtime_get_sync(dev); + renesas_usb3_init_controller(usb3); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(renesas_usb3_pm_ops, renesas_usb3_suspend, + renesas_usb3_resume); + static struct platform_driver renesas_usb3_driver = { .probe = renesas_usb3_probe, .remove = renesas_usb3_remove, .driver = { .name = (char *)udc_name, + .pm = &renesas_usb3_pm_ops, .of_match_table = of_match_ptr(usb3_of_match), }, }; |