diff options
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/Kconfig | 2 | ||||
-rw-r--r-- | drivers/usb/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/phy/Kconfig | 17 | ||||
-rw-r--r-- | drivers/usb/phy/Makefile | 7 | ||||
-rw-r--r-- | drivers/usb/phy/isp1301.c | 77 |
5 files changed, 104 insertions, 0 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 76316a3..4473ae5 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -177,6 +177,8 @@ source "drivers/usb/serial/Kconfig" source "drivers/usb/misc/Kconfig" +source "drivers/usb/phy/Kconfig" + source "drivers/usb/atm/Kconfig" source "drivers/usb/gadget/Kconfig" diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 53a7bc0..77c835a 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -46,6 +46,7 @@ obj-$(CONFIG_USB_MICROTEK) += image/ obj-$(CONFIG_USB_SERIAL) += serial/ obj-$(CONFIG_USB) += misc/ +obj-$(CONFIG_USB) += phy/ obj-$(CONFIG_EARLY_PRINTK_DBGP) += early/ obj-$(CONFIG_USB_ATM) += atm/ diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig new file mode 100644 index 0000000..3cfabcb --- /dev/null +++ b/drivers/usb/phy/Kconfig @@ -0,0 +1,17 @@ +# +# Physical Layer USB driver configuration +# +comment "USB Physical Layer drivers" + depends on USB + +config USB_ISP1301 + tristate "NXP ISP1301 USB transceiver support" + depends on USB + depends on I2C + help + Say Y here to add support for the NXP ISP1301 USB transceiver driver. + This chip is typically used as USB transceiver for USB host, gadget + and OTG drivers (to be selected separately). + + To compile this driver as a module, choose M here: the + module will be called isp1301. diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile new file mode 100644 index 0000000..eca095b --- /dev/null +++ b/drivers/usb/phy/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for physical layer USB drivers +# + +ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG + +obj-$(CONFIG_USB_ISP1301) += isp1301.o diff --git a/drivers/usb/phy/isp1301.c b/drivers/usb/phy/isp1301.c new file mode 100644 index 0000000..b19f493 --- /dev/null +++ b/drivers/usb/phy/isp1301.c @@ -0,0 +1,77 @@ +/* + * NXP ISP1301 USB transceiver driver + * + * Copyright (C) 2012 Roland Stigge + * + * Author: Roland Stigge <stigge@antcom.de> + * + * 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/module.h> +#include <linux/i2c.h> + +#define DRV_NAME "isp1301" + +#define ISP1301_I2C_ADDR 0x2C + +static const unsigned short normal_i2c[] = { + ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END +}; + +static const struct i2c_device_id isp1301_id[] = { + { "isp1301", 0 }, + { } +}; + +static struct i2c_client *isp1301_i2c_client; + +static int isp1301_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + isp1301_i2c_client = client; + return 0; +} + +static int isp1301_remove(struct i2c_client *client) +{ + return 0; +} + +static struct i2c_driver isp1301_driver = { + .driver = { + .name = DRV_NAME, + }, + .probe = isp1301_probe, + .remove = isp1301_remove, + .id_table = isp1301_id, +}; + +module_i2c_driver(isp1301_driver); + +static int match(struct device *dev, void *data) +{ + struct device_node *node = (struct device_node *)data; + return (dev->of_node == node) && + (dev->driver == &isp1301_driver.driver); +} + +struct i2c_client *isp1301_get_client(struct device_node *node) +{ + if (node) { /* reference of ISP1301 I2C node via DT */ + struct device *dev = bus_find_device(&i2c_bus_type, NULL, + node, match); + if (!dev) + return NULL; + return to_i2c_client(dev); + } else { /* non-DT: only one ISP1301 chip supported */ + return isp1301_i2c_client; + } +} +EXPORT_SYMBOL_GPL(isp1301_get_client); + +MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>"); +MODULE_DESCRIPTION("NXP ISP1301 USB transceiver driver"); +MODULE_LICENSE("GPL"); |