diff options
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/usb/phy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/phy/mv_u3d_phy.c | 4 | ||||
| -rw-r--r-- | drivers/usb/phy/omap-usb2.c | 6 | ||||
| -rw-r--r-- | drivers/usb/phy/rcar-phy.c | 220 | ||||
| -rw-r--r-- | drivers/usb/phy/tegra_usb_phy.c | 4 |
6 files changed, 242 insertions, 6 deletions
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 63c339b3e676..5de6e7f39f9c 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -6,6 +6,7 @@ comment "USB Physical Layer drivers" config OMAP_USB2 tristate "OMAP USB2 PHY Driver" + depends on ARCH_OMAP2PLUS select USB_OTG_UTILS help Enable this to support the transceiver that is part of SOC. This @@ -32,3 +33,15 @@ config MV_U3D_PHY help Enable this to support Marvell USB 3.0 phy controller for Marvell SoC. + +config USB_RCAR_PHY + tristate "Renesas R-Car USB phy support" + depends on USB || USB_GADGET + select USB_OTG_UTILS + help + Say Y here to add support for the Renesas R-Car USB phy driver. + This chip is typically used as USB phy for USB host, gadget. + This driver supports: R8A7779 + + To compile this driver as a module, choose M here: the + module will be called rcar-phy. diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index b069f29f1225..1a579a860a03 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -8,3 +8,4 @@ obj-$(CONFIG_OMAP_USB2) += omap-usb2.o obj-$(CONFIG_USB_ISP1301) += isp1301.o obj-$(CONFIG_MV_U3D_PHY) += mv_u3d_phy.o obj-$(CONFIG_USB_EHCI_TEGRA) += tegra_usb_phy.o +obj-$(CONFIG_USB_RCAR_PHY) += rcar-phy.o diff --git a/drivers/usb/phy/mv_u3d_phy.c b/drivers/usb/phy/mv_u3d_phy.c index 9f1c5d3c60ec..eaddbe3d4304 100644 --- a/drivers/usb/phy/mv_u3d_phy.c +++ b/drivers/usb/phy/mv_u3d_phy.c @@ -262,7 +262,7 @@ calstart: return 0; } -static int __devinit mv_u3d_phy_probe(struct platform_device *pdev) +static int mv_u3d_phy_probe(struct platform_device *pdev) { struct mv_u3d_phy *mv_u3d_phy; struct mv_usb_platform_data *pdata; @@ -331,7 +331,7 @@ static int __exit mv_u3d_phy_remove(struct platform_device *pdev) static struct platform_driver mv_u3d_phy_driver = { .probe = mv_u3d_phy_probe, - .remove = __devexit_p(mv_u3d_phy_remove), + .remove = mv_u3d_phy_remove, .driver = { .name = "mv-u3d-phy", .owner = THIS_MODULE, diff --git a/drivers/usb/phy/omap-usb2.c b/drivers/usb/phy/omap-usb2.c index 15ab3d6f2e8c..26ae8f49225c 100644 --- a/drivers/usb/phy/omap-usb2.c +++ b/drivers/usb/phy/omap-usb2.c @@ -141,7 +141,7 @@ static int omap_usb2_suspend(struct usb_phy *x, int suspend) return 0; } -static int __devinit omap_usb2_probe(struct platform_device *pdev) +static int omap_usb2_probe(struct platform_device *pdev) { struct omap_usb *phy; struct usb_otg *otg; @@ -199,7 +199,7 @@ static int __devinit omap_usb2_probe(struct platform_device *pdev) return 0; } -static int __devexit omap_usb2_remove(struct platform_device *pdev) +static int omap_usb2_remove(struct platform_device *pdev) { struct omap_usb *phy = platform_get_drvdata(pdev); @@ -254,7 +254,7 @@ MODULE_DEVICE_TABLE(of, omap_usb2_id_table); static struct platform_driver omap_usb2_driver = { .probe = omap_usb2_probe, - .remove = __devexit_p(omap_usb2_remove), + .remove = omap_usb2_remove, .driver = { .name = "omap-usb2", .owner = THIS_MODULE, diff --git a/drivers/usb/phy/rcar-phy.c b/drivers/usb/phy/rcar-phy.c new file mode 100644 index 000000000000..a35681b0c501 --- /dev/null +++ b/drivers/usb/phy/rcar-phy.c @@ -0,0 +1,220 @@ +/* + * Renesas R-Car USB phy driver + * + * Copyright (C) 2012 Renesas Solutions Corp. + * Kuninori Morimoto <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/usb/otg.h> +#include <linux/platform_device.h> +#include <linux/spinlock.h> +#include <linux/module.h> + +/* USBH common register */ +#define USBPCTRL0 0x0800 +#define USBPCTRL1 0x0804 +#define USBST 0x0808 +#define USBEH0 0x080C +#define USBOH0 0x081C +#define USBCTL0 0x0858 +#define EIIBC1 0x0094 +#define EIIBC2 0x009C + +/* USBPCTRL1 */ +#define PHY_RST (1 << 2) +#define PLL_ENB (1 << 1) +#define PHY_ENB (1 << 0) + +/* USBST */ +#define ST_ACT (1 << 31) +#define ST_PLL (1 << 30) + +struct rcar_usb_phy_priv { + struct usb_phy phy; + spinlock_t lock; + + void __iomem *reg0; + void __iomem *reg1; + int counter; +}; + +#define usb_phy_to_priv(p) container_of(p, struct rcar_usb_phy_priv, phy) + + +/* + * USB initial/install operation. + * + * This function setup USB phy. + * The used value and setting order came from + * [USB :: Initial setting] on datasheet. + */ +static int rcar_usb_phy_init(struct usb_phy *phy) +{ + struct rcar_usb_phy_priv *priv = usb_phy_to_priv(phy); + struct device *dev = phy->dev; + void __iomem *reg0 = priv->reg0; + void __iomem *reg1 = priv->reg1; + int i; + u32 val; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + if (priv->counter++ == 0) { + + /* + * USB phy start-up + */ + + /* (1) USB-PHY standby release */ + iowrite32(PHY_ENB, (reg0 + USBPCTRL1)); + + /* (2) start USB-PHY internal PLL */ + iowrite32(PHY_ENB | PLL_ENB, (reg0 + USBPCTRL1)); + + /* (3) USB module status check */ + for (i = 0; i < 1024; i++) { + udelay(10); + val = ioread32(reg0 + USBST); + if (val == (ST_ACT | ST_PLL)) + break; + } + + if (val != (ST_ACT | ST_PLL)) { + dev_err(dev, "USB phy not ready\n"); + goto phy_init_end; + } + + /* (4) USB-PHY reset clear */ + iowrite32(PHY_ENB | PLL_ENB | PHY_RST, (reg0 + USBPCTRL1)); + + /* set platform specific port settings */ + iowrite32(0x00000000, (reg0 + USBPCTRL0)); + + /* + * EHCI IP internal buffer setting + * EHCI IP internal buffer enable + * + * These are recommended value of a datasheet + * see [USB :: EHCI internal buffer setting] + */ + iowrite32(0x00ff0040, (reg0 + EIIBC1)); + iowrite32(0x00ff0040, (reg1 + EIIBC1)); + + iowrite32(0x00000001, (reg0 + EIIBC2)); + iowrite32(0x00000001, (reg1 + EIIBC2)); + + /* + * Bus alignment settings + */ + + /* (1) EHCI bus alignment (little endian) */ + iowrite32(0x00000000, (reg0 + USBEH0)); + + /* (1) OHCI bus alignment (little endian) */ + iowrite32(0x00000000, (reg0 + USBOH0)); + } + +phy_init_end: + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static void rcar_usb_phy_shutdown(struct usb_phy *phy) +{ + struct rcar_usb_phy_priv *priv = usb_phy_to_priv(phy); + void __iomem *reg0 = priv->reg0; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + + if (priv->counter-- == 1) { /* last user */ + iowrite32(0x00000000, (reg0 + USBPCTRL0)); + iowrite32(0x00000000, (reg0 + USBPCTRL1)); + } + + spin_unlock_irqrestore(&priv->lock, flags); +} + +static int rcar_usb_phy_probe(struct platform_device *pdev) +{ + struct rcar_usb_phy_priv *priv; + struct resource *res0, *res1; + struct device *dev = &pdev->dev; + void __iomem *reg0, *reg1; + int ret; + + res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res0 || !res1) { + dev_err(dev, "Not enough platform resources\n"); + return -EINVAL; + } + + /* + * CAUTION + * + * Because this phy address is also mapped under OHCI/EHCI address area, + * this driver can't use devm_request_and_ioremap(dev, res) here + */ + reg0 = devm_ioremap_nocache(dev, res0->start, resource_size(res0)); + reg1 = devm_ioremap_nocache(dev, res1->start, resource_size(res1)); + if (!reg0 || !reg1) { + dev_err(dev, "ioremap error\n"); + return -ENOMEM; + } + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(dev, "priv data allocation error\n"); + return -ENOMEM; + } + + priv->reg0 = reg0; + priv->reg1 = reg1; + priv->counter = 0; + priv->phy.dev = dev; + priv->phy.label = dev_name(dev); + priv->phy.init = rcar_usb_phy_init; + priv->phy.shutdown = rcar_usb_phy_shutdown; + spin_lock_init(&priv->lock); + + ret = usb_add_phy(&priv->phy, USB_PHY_TYPE_USB2); + if (ret < 0) { + dev_err(dev, "usb phy addition error\n"); + return ret; + } + + platform_set_drvdata(pdev, priv); + + return ret; +} + +static int rcar_usb_phy_remove(struct platform_device *pdev) +{ + struct rcar_usb_phy_priv *priv = platform_get_drvdata(pdev); + + usb_remove_phy(&priv->phy); + + return 0; +} + +static struct platform_driver rcar_usb_phy_driver = { + .driver = { + .name = "rcar_usb_phy", + }, + .probe = rcar_usb_phy_probe, + .remove = rcar_usb_phy_remove, +}; + +module_platform_driver(rcar_usb_phy_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Renesas R-Car USB phy"); +MODULE_AUTHOR("Kuninori Morimoto <[email protected]>"); diff --git a/drivers/usb/phy/tegra_usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c index 987116f9efcd..9d13c81754e0 100644 --- a/drivers/usb/phy/tegra_usb_phy.c +++ b/drivers/usb/phy/tegra_usb_phy.c @@ -29,7 +29,9 @@ #include <linux/usb/ulpi.h> #include <asm/mach-types.h> #include <linux/usb/tegra_usb_phy.h> -#include <mach/iomap.h> + +#define TEGRA_USB_BASE 0xC5000000 +#define TEGRA_USB_SIZE SZ_16K #define ULPI_VIEWPORT 0x170 |