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usb: misc: add USB251xB/xBi Hi-Speed Hub Controller Driver
This patch adds a driver for configuration of the Microchip USB251xB/xBi USB 2.0 hub controller series with USB 2.0 upstream connectivity, SMBus configuration interface and two to four USB 2.0 downstream ports. Furthermore add myself as a maintainer for this driver. The datasheet can be found at the manufacturers website, see [1]. All device-tree exposed configuration features have been tested on a i.MX6 platform with a USB2512B hub. [1] http://ww1.microchip.com/downloads/en/DeviceDoc/00001692C.pdf Signed-off-by: Richard Leitner <richard.leitner@skidata.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Richard Leitner
Greg Kroah-Hartman
parent
ef5ec7f08d
commit
3ec72a2a1e
83
Documentation/devicetree/bindings/usb/usb251xb.txt
Normal file
83
Documentation/devicetree/bindings/usb/usb251xb.txt
Normal file
@ -0,0 +1,83 @@
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Microchip USB 2.0 Hi-Speed Hub Controller
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The device node for the configuration of a Microchip USB251xB/xBi USB 2.0
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Hi-Speed Controller.
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Required properties :
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- compatible : Should be "microchip,usb251xb" or one of the specific types:
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"microchip,usb2512b", "microchip,usb2512bi", "microchip,usb2513b",
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"microchip,usb2513bi", "microchip,usb2514b", "microchip,usb2514bi"
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- hub-reset-gpios : Should specify the gpio for hub reset
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Optional properties :
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- reg : I2C address on the selected bus (default is <0x2C>)
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- skip-config : Skip Hub configuration, but only send the USB-Attach command
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- vendor-id : USB Vendor ID of the hub (16 bit, default is 0x0424)
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- product-id : USB Product ID of the hub (16 bit, default depends on type)
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- device-id : USB Device ID of the hub (16 bit, default is 0x0bb3)
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- language-id : USB Language ID (16 bit, default is 0x0000)
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- manufacturer : USB Manufacturer string (max 31 characters long)
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- product : USB Product string (max 31 characters long)
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- serial : USB Serial string (max 31 characters long)
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- {bus,self}-powered : selects between self- and bus-powered operation (default
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is self-powered)
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- disable-hi-speed : disable USB Hi-Speed support
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- {multi,single}-tt : selects between multi- and single-transaction-translator
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(default is multi-tt)
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- disable-eop : disable End of Packet generation in full-speed mode
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- {ganged,individual}-sensing : select over-current sense type in self-powered
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mode (default is individual)
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- {ganged,individual}-port-switching : select port power switching mode
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(default is individual)
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- dynamic-power-switching : enable auto-switching from self- to bus-powered
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operation if the local power source is removed or unavailable
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- oc-delay-{100us,4ms,8ms,16ms} : set over current timer delay (default is 8ms)
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- compound-device : indicated the hub is part of a compound device
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- port-mapping-mode : enable port mapping mode
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- string-support : enable string descriptor support (required for manufacturer,
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product and serial string configuration)
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- non-removable-ports : Should specify the ports which have a non-removable
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device connected.
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- sp-disabled-ports : Specifies the ports which will be self-power disabled
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- bp-disabled-ports : Specifies the ports which will be bus-power disabled
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- max-sp-power : Specifies the maximum current the hub consumes from an
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upstream port when operating as self-powered hub including the power
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consumption of a permanently attached peripheral if the hub is
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configured as a compound device. The value is given in mA in a 0 - 500
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range (default is 2).
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- max-bp-power : Specifies the maximum current the hub consumes from an
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upstream port when operating as bus-powered hub including the power
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consumption of a permanently attached peripheral if the hub is
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configured as a compound device. The value is given in mA in a 0 - 500
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range (default is 100).
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- max-sp-current : Specifies the maximum current the hub consumes from an
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upstream port when operating as self-powered hub EXCLUDING the power
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consumption of a permanently attached peripheral if the hub is
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configured as a compound device. The value is given in mA in a 0 - 500
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range (default is 2).
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- max-bp-current : Specifies the maximum current the hub consumes from an
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upstream port when operating as bus-powered hub EXCLUDING the power
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consumption of a permanently attached peripheral if the hub is
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configured as a compound device. The value is given in mA in a 0 - 500
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range (default is 100).
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- power-on-time : Specifies the time it takes from the time the host initiates
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the power-on sequence to a port until the port has adequate power. The
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value is given in ms in a 0 - 510 range (default is 100ms).
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Examples:
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usb2512b@2c {
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compatible = "microchip,usb2512b";
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hub-reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
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};
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usb2514b@2c {
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compatible = "microchip,usb2514b";
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reg = <0x2c>;
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reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
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vendor-id = /bits/ 16 <0x0000>;
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product-id = /bits/ 16 <0x0000>;
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string-support;
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manufacturer = "Foo";
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product = "Foo-Bar";
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serial = "1234567890A";
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};
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@ -8201,6 +8201,14 @@ F: drivers/media/platform/atmel/atmel-isc.c
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F: drivers/media/platform/atmel/atmel-isc-regs.h
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F: devicetree/bindings/media/atmel-isc.txt
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MICROCHIP USB251XB DRIVER
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M: Richard Leitner <richard.leitner@skidata.com>
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L: linux-usb@vger.kernel.org
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S: Maintained
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F: drivers/usb/misc/usb251xb.c
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F: include/linux/platform_data/usb251xb.h
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F: Documentation/devicetree/bindings/usb/usb251xb.txt
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MICROSOFT SURFACE PRO 3 BUTTON DRIVER
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M: Chen Yu <yu.c.chen@intel.com>
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L: platform-driver-x86@vger.kernel.org
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@ -233,6 +233,15 @@ config USB_EZUSB_FX2
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Say Y here if you need EZUSB device support.
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(Cypress FX/FX2/FX2LP microcontrollers)
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config USB_HUB_USB251XB
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tristate "USB251XB Hub Controller Configuration Driver"
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depends on I2C
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help
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This option enables support for configuration via SMBus of the
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Microchip USB251xB/xBi USB 2.0 Hub Controller series.
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Configuration parameters may be set in devicetree or platform data.
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Say Y or M here if you need to configure such a device via SMBus.
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config USB_HSIC_USB3503
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tristate "USB3503 HSIC to USB20 Driver"
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depends on I2C
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@ -23,6 +23,7 @@ obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o
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obj-$(CONFIG_USB_USS720) += uss720.o
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obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o
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obj-$(CONFIG_USB_YUREX) += yurex.o
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obj-$(CONFIG_USB_HUB_USB251XB) += usb251xb.o
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obj-$(CONFIG_USB_HSIC_USB3503) += usb3503.o
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obj-$(CONFIG_USB_HSIC_USB4604) += usb4604.o
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obj-$(CONFIG_USB_CHAOSKEY) += chaoskey.o
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605
drivers/usb/misc/usb251xb.c
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605
drivers/usb/misc/usb251xb.c
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@ -0,0 +1,605 @@
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/*
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* Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller
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* Configuration via SMBus.
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*
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* Copyright (c) 2017 SKIDATA AG
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*
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* This work is based on the USB3503 driver by Dongjin Kim and
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* a not-accepted patch by Fabien Lahoudere, see:
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* https://patchwork.kernel.org/patch/9257715/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/nls.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/slab.h>
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/* Internal Register Set Addresses & Default Values acc. to DS00001692C */
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#define USB251XB_ADDR_VENDOR_ID_LSB 0x00
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#define USB251XB_ADDR_VENDOR_ID_MSB 0x01
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#define USB251XB_DEF_VENDOR_ID 0x0424
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#define USB251XB_ADDR_PRODUCT_ID_LSB 0x02
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#define USB251XB_ADDR_PRODUCT_ID_MSB 0x03
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#define USB251XB_DEF_PRODUCT_ID_12 0x2512 /* USB2512B/12Bi */
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#define USB251XB_DEF_PRODUCT_ID_13 0x2513 /* USB2513B/13Bi */
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#define USB251XB_DEF_PRODUCT_ID_14 0x2514 /* USB2514B/14Bi */
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#define USB251XB_ADDR_DEVICE_ID_LSB 0x04
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#define USB251XB_ADDR_DEVICE_ID_MSB 0x05
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#define USB251XB_DEF_DEVICE_ID 0x0BB3
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#define USB251XB_ADDR_CONFIG_DATA_1 0x06
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#define USB251XB_DEF_CONFIG_DATA_1 0x9B
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#define USB251XB_ADDR_CONFIG_DATA_2 0x07
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#define USB251XB_DEF_CONFIG_DATA_2 0x20
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#define USB251XB_ADDR_CONFIG_DATA_3 0x08
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#define USB251XB_DEF_CONFIG_DATA_3 0x02
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#define USB251XB_ADDR_NON_REMOVABLE_DEVICES 0x09
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#define USB251XB_DEF_NON_REMOVABLE_DEVICES 0x00
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#define USB251XB_ADDR_PORT_DISABLE_SELF 0x0A
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#define USB251XB_DEF_PORT_DISABLE_SELF 0x00
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#define USB251XB_ADDR_PORT_DISABLE_BUS 0x0B
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#define USB251XB_DEF_PORT_DISABLE_BUS 0x00
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#define USB251XB_ADDR_MAX_POWER_SELF 0x0C
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#define USB251XB_DEF_MAX_POWER_SELF 0x01
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#define USB251XB_ADDR_MAX_POWER_BUS 0x0D
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#define USB251XB_DEF_MAX_POWER_BUS 0x32
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#define USB251XB_ADDR_MAX_CURRENT_SELF 0x0E
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#define USB251XB_DEF_MAX_CURRENT_SELF 0x01
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#define USB251XB_ADDR_MAX_CURRENT_BUS 0x0F
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#define USB251XB_DEF_MAX_CURRENT_BUS 0x32
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#define USB251XB_ADDR_POWER_ON_TIME 0x10
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#define USB251XB_DEF_POWER_ON_TIME 0x32
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#define USB251XB_ADDR_LANGUAGE_ID_HIGH 0x11
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#define USB251XB_ADDR_LANGUAGE_ID_LOW 0x12
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#define USB251XB_DEF_LANGUAGE_ID 0x0000
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#define USB251XB_STRING_BUFSIZE 62
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#define USB251XB_ADDR_MANUFACTURER_STRING_LEN 0x13
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#define USB251XB_ADDR_MANUFACTURER_STRING 0x16
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#define USB251XB_DEF_MANUFACTURER_STRING "Microchip"
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#define USB251XB_ADDR_PRODUCT_STRING_LEN 0x14
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#define USB251XB_ADDR_PRODUCT_STRING 0x54
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#define USB251XB_DEF_PRODUCT_STRING "USB251xB/xBi"
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#define USB251XB_ADDR_SERIAL_STRING_LEN 0x15
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#define USB251XB_ADDR_SERIAL_STRING 0x92
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#define USB251XB_DEF_SERIAL_STRING ""
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#define USB251XB_ADDR_BATTERY_CHARGING_ENABLE 0xD0
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#define USB251XB_DEF_BATTERY_CHARGING_ENABLE 0x00
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#define USB251XB_ADDR_BOOST_UP 0xF6
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#define USB251XB_DEF_BOOST_UP 0x00
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#define USB251XB_ADDR_BOOST_X 0xF8
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#define USB251XB_DEF_BOOST_X 0x00
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#define USB251XB_ADDR_PORT_SWAP 0xFA
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#define USB251XB_DEF_PORT_SWAP 0x00
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#define USB251XB_ADDR_PORT_MAP_12 0xFB
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#define USB251XB_DEF_PORT_MAP_12 0x00
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#define USB251XB_ADDR_PORT_MAP_34 0xFC
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#define USB251XB_DEF_PORT_MAP_34 0x00 /* USB2513B/i & USB2514B/i only */
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#define USB251XB_ADDR_STATUS_COMMAND 0xFF
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#define USB251XB_STATUS_COMMAND_SMBUS_DOWN 0x04
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#define USB251XB_STATUS_COMMAND_RESET 0x02
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#define USB251XB_STATUS_COMMAND_ATTACH 0x01
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#define USB251XB_I2C_REG_SZ 0x100
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#define USB251XB_I2C_WRITE_SZ 0x10
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#define DRIVER_NAME "usb251xb"
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#define DRIVER_DESC "Microchip USB 2.0 Hi-Speed Hub Controller"
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#define DRIVER_VERSION "1.0"
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struct usb251xb {
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struct device *dev;
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struct i2c_client *i2c;
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u8 skip_config;
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int gpio_reset;
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u16 vendor_id;
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u16 product_id;
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u16 device_id;
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u8 conf_data1;
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u8 conf_data2;
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u8 conf_data3;
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u8 non_rem_dev;
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u8 port_disable_sp;
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u8 port_disable_bp;
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u8 max_power_sp;
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u8 max_power_bp;
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u8 max_current_sp;
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u8 max_current_bp;
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u8 power_on_time;
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u16 lang_id;
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u8 manufacturer_len;
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u8 product_len;
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u8 serial_len;
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char manufacturer[USB251XB_STRING_BUFSIZE];
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char product[USB251XB_STRING_BUFSIZE];
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char serial[USB251XB_STRING_BUFSIZE];
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u8 bat_charge_en;
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u8 boost_up;
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u8 boost_x;
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u8 port_swap;
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u8 port_map12;
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u8 port_map34;
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u8 status;
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};
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struct usb251xb_data {
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u16 product_id;
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char product_str[USB251XB_STRING_BUFSIZE / 2]; /* ASCII string */
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};
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static const struct usb251xb_data usb2512b_data = {
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.product_id = 0x2512,
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.product_str = "USB2512B",
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};
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static const struct usb251xb_data usb2512bi_data = {
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.product_id = 0x2512,
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.product_str = "USB2512Bi",
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};
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static const struct usb251xb_data usb2513b_data = {
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.product_id = 0x2513,
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.product_str = "USB2513B",
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};
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static const struct usb251xb_data usb2513bi_data = {
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.product_id = 0x2513,
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.product_str = "USB2513Bi",
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};
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static const struct usb251xb_data usb2514b_data = {
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.product_id = 0x2514,
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.product_str = "USB2514B",
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};
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static const struct usb251xb_data usb2514bi_data = {
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.product_id = 0x2514,
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.product_str = "USB2514Bi",
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};
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static void usb251xb_reset(struct usb251xb *hub, int state)
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{
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if (!gpio_is_valid(hub->gpio_reset))
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return;
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gpio_set_value_cansleep(hub->gpio_reset, state);
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/* wait for hub recovery/stabilization */
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if (state)
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usleep_range(500, 750); /* >=500us at power on */
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else
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usleep_range(1, 10); /* >=1us at power down */
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}
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static int usb251xb_connect(struct usb251xb *hub)
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{
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struct device *dev = hub->dev;
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int err, i;
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char i2c_wb[USB251XB_I2C_REG_SZ];
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memset(i2c_wb, 0, USB251XB_I2C_REG_SZ);
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if (hub->skip_config) {
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dev_info(dev, "Skip hub configuration, only attach.\n");
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i2c_wb[0] = 0x01;
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i2c_wb[1] = USB251XB_STATUS_COMMAND_ATTACH;
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usb251xb_reset(hub, 1);
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err = i2c_smbus_write_i2c_block_data(hub->i2c,
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USB251XB_ADDR_STATUS_COMMAND, 2, i2c_wb);
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if (err) {
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dev_err(dev, "attaching hub failed: %d\n", err);
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return err;
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}
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return 0;
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}
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i2c_wb[USB251XB_ADDR_VENDOR_ID_MSB] = (hub->vendor_id >> 8) & 0xFF;
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i2c_wb[USB251XB_ADDR_VENDOR_ID_LSB] = hub->vendor_id & 0xFF;
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i2c_wb[USB251XB_ADDR_PRODUCT_ID_MSB] = (hub->product_id >> 8) & 0xFF;
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i2c_wb[USB251XB_ADDR_PRODUCT_ID_LSB] = hub->product_id & 0xFF;
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i2c_wb[USB251XB_ADDR_DEVICE_ID_MSB] = (hub->device_id >> 8) & 0xFF;
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i2c_wb[USB251XB_ADDR_DEVICE_ID_LSB] = hub->device_id & 0xFF;
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i2c_wb[USB251XB_ADDR_CONFIG_DATA_1] = hub->conf_data1;
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i2c_wb[USB251XB_ADDR_CONFIG_DATA_2] = hub->conf_data2;
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i2c_wb[USB251XB_ADDR_CONFIG_DATA_3] = hub->conf_data3;
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i2c_wb[USB251XB_ADDR_NON_REMOVABLE_DEVICES] = hub->non_rem_dev;
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i2c_wb[USB251XB_ADDR_PORT_DISABLE_SELF] = hub->port_disable_sp;
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i2c_wb[USB251XB_ADDR_PORT_DISABLE_BUS] = hub->port_disable_bp;
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i2c_wb[USB251XB_ADDR_MAX_POWER_SELF] = hub->max_power_sp;
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i2c_wb[USB251XB_ADDR_MAX_POWER_BUS] = hub->max_power_bp;
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i2c_wb[USB251XB_ADDR_MAX_CURRENT_SELF] = hub->max_current_sp;
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i2c_wb[USB251XB_ADDR_MAX_CURRENT_BUS] = hub->max_current_bp;
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i2c_wb[USB251XB_ADDR_POWER_ON_TIME] = hub->power_on_time;
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i2c_wb[USB251XB_ADDR_LANGUAGE_ID_HIGH] = (hub->lang_id >> 8) & 0xFF;
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i2c_wb[USB251XB_ADDR_LANGUAGE_ID_LOW] = hub->lang_id & 0xFF;
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i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING_LEN] = hub->manufacturer_len;
|
||||
i2c_wb[USB251XB_ADDR_PRODUCT_STRING_LEN] = hub->product_len;
|
||||
i2c_wb[USB251XB_ADDR_SERIAL_STRING_LEN] = hub->serial_len;
|
||||
memcpy(&i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING], hub->manufacturer,
|
||||
USB251XB_STRING_BUFSIZE);
|
||||
memcpy(&i2c_wb[USB251XB_ADDR_SERIAL_STRING], hub->serial,
|
||||
USB251XB_STRING_BUFSIZE);
|
||||
memcpy(&i2c_wb[USB251XB_ADDR_PRODUCT_STRING], hub->product,
|
||||
USB251XB_STRING_BUFSIZE);
|
||||
i2c_wb[USB251XB_ADDR_BATTERY_CHARGING_ENABLE] = hub->bat_charge_en;
|
||||
i2c_wb[USB251XB_ADDR_BOOST_UP] = hub->boost_up;
|
||||
i2c_wb[USB251XB_ADDR_BOOST_X] = hub->boost_x;
|
||||
i2c_wb[USB251XB_ADDR_PORT_SWAP] = hub->port_swap;
|
||||
i2c_wb[USB251XB_ADDR_PORT_MAP_12] = hub->port_map12;
|
||||
i2c_wb[USB251XB_ADDR_PORT_MAP_34] = hub->port_map34;
|
||||
i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH;
|
||||
|
||||
usb251xb_reset(hub, 1);
|
||||
|
||||
/* write registers */
|
||||
for (i = 0; i < (USB251XB_I2C_REG_SZ / USB251XB_I2C_WRITE_SZ); i++) {
|
||||
int offset = i * USB251XB_I2C_WRITE_SZ;
|
||||
char wbuf[USB251XB_I2C_WRITE_SZ + 1];
|
||||
|
||||
/* The first data byte transferred tells the hub how many data
|
||||
* bytes will follow (byte count).
|
||||
*/
|
||||
wbuf[0] = USB251XB_I2C_WRITE_SZ;
|
||||
memcpy(&wbuf[1], &i2c_wb[offset], USB251XB_I2C_WRITE_SZ);
|
||||
|
||||
dev_dbg(dev, "writing %d byte block %d to 0x%02X\n",
|
||||
USB251XB_I2C_WRITE_SZ, i, offset);
|
||||
|
||||
err = i2c_smbus_write_i2c_block_data(hub->i2c, offset,
|
||||
USB251XB_I2C_WRITE_SZ + 1,
|
||||
wbuf);
|
||||
if (err)
|
||||
goto out_err;
|
||||
}
|
||||
|
||||
dev_info(dev, "Hub configuration was successful.\n");
|
||||
return 0;
|
||||
|
||||
out_err:
|
||||
dev_err(dev, "configuring block %d failed: %d\n", i, err);
|
||||
return err;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static int usb251xb_get_ofdata(struct usb251xb *hub,
|
||||
struct usb251xb_data *data)
|
||||
{
|
||||
struct device *dev = hub->dev;
|
||||
struct device_node *np = dev->of_node;
|
||||
int len, err, i;
|
||||
u32 *property_u32 = NULL;
|
||||
const u32 *cproperty_u32;
|
||||
const char *cproperty_char;
|
||||
char str[USB251XB_STRING_BUFSIZE / 2];
|
||||
|
||||
if (!np) {
|
||||
dev_err(dev, "failed to get ofdata\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (of_get_property(np, "skip-config", NULL))
|
||||
hub->skip_config = 1;
|
||||
else
|
||||
hub->skip_config = 0;
|
||||
|
||||
hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0);
|
||||
if (hub->gpio_reset == -EPROBE_DEFER)
|
||||
return -EPROBE_DEFER;
|
||||
if (gpio_is_valid(hub->gpio_reset)) {
|
||||
err = devm_gpio_request_one(dev, hub->gpio_reset,
|
||||
GPIOF_OUT_INIT_LOW,
|
||||
"usb251xb reset");
|
||||
if (err) {
|
||||
dev_err(dev,
|
||||
"unable to request GPIO %d as reset pin (%d)\n",
|
||||
hub->gpio_reset, err);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
if (of_property_read_u16_array(np, "vendor-id", &hub->vendor_id, 1))
|
||||
hub->vendor_id = USB251XB_DEF_VENDOR_ID;
|
||||
|
||||
if (of_property_read_u16_array(np, "product-id",
|
||||
&hub->product_id, 1))
|
||||
hub->product_id = data->product_id;
|
||||
|
||||
if (of_property_read_u16_array(np, "device-id", &hub->device_id, 1))
|
||||
hub->device_id = USB251XB_DEF_DEVICE_ID;
|
||||
|
||||
hub->conf_data1 = USB251XB_DEF_CONFIG_DATA_1;
|
||||
if (of_get_property(np, "self-powered", NULL)) {
|
||||
hub->conf_data1 |= BIT(7);
|
||||
|
||||
/* Configure Over-Current sens when self-powered */
|
||||
hub->conf_data1 &= ~BIT(2);
|
||||
if (of_get_property(np, "ganged-sensing", NULL))
|
||||
hub->conf_data1 &= ~BIT(1);
|
||||
else if (of_get_property(np, "individual-sensing", NULL))
|
||||
hub->conf_data1 |= BIT(1);
|
||||
} else if (of_get_property(np, "bus-powered", NULL)) {
|
||||
hub->conf_data1 &= ~BIT(7);
|
||||
|
||||
/* Disable Over-Current sense when bus-powered */
|
||||
hub->conf_data1 |= BIT(2);
|
||||
}
|
||||
|
||||
if (of_get_property(np, "disable-hi-speed", NULL))
|
||||
hub->conf_data1 |= BIT(5);
|
||||
|
||||
if (of_get_property(np, "multi-tt", NULL))
|
||||
hub->conf_data1 |= BIT(4);
|
||||
else if (of_get_property(np, "single-tt", NULL))
|
||||
hub->conf_data1 &= ~BIT(4);
|
||||
|
||||
if (of_get_property(np, "disable-eop", NULL))
|
||||
hub->conf_data1 |= BIT(3);
|
||||
|
||||
if (of_get_property(np, "individual-port-switching", NULL))
|
||||
hub->conf_data1 |= BIT(0);
|
||||
else if (of_get_property(np, "ganged-port-switching", NULL))
|
||||
hub->conf_data1 &= ~BIT(0);
|
||||
|
||||
hub->conf_data2 = USB251XB_DEF_CONFIG_DATA_2;
|
||||
if (of_get_property(np, "dynamic-power-switching", NULL))
|
||||
hub->conf_data2 |= BIT(7);
|
||||
|
||||
if (of_get_property(np, "oc-delay-100us", NULL)) {
|
||||
hub->conf_data2 &= ~BIT(5);
|
||||
hub->conf_data2 &= ~BIT(4);
|
||||
} else if (of_get_property(np, "oc-delay-4ms", NULL)) {
|
||||
hub->conf_data2 &= ~BIT(5);
|
||||
hub->conf_data2 |= BIT(4);
|
||||
} else if (of_get_property(np, "oc-delay-8ms", NULL)) {
|
||||
hub->conf_data2 |= BIT(5);
|
||||
hub->conf_data2 &= ~BIT(4);
|
||||
} else if (of_get_property(np, "oc-delay-16ms", NULL)) {
|
||||
hub->conf_data2 |= BIT(5);
|
||||
hub->conf_data2 |= BIT(4);
|
||||
}
|
||||
|
||||
if (of_get_property(np, "compound-device", NULL))
|
||||
hub->conf_data2 |= BIT(3);
|
||||
|
||||
hub->conf_data3 = USB251XB_DEF_CONFIG_DATA_3;
|
||||
if (of_get_property(np, "port-mapping-mode", NULL))
|
||||
hub->conf_data3 |= BIT(3);
|
||||
|
||||
if (of_get_property(np, "string-support", NULL))
|
||||
hub->conf_data3 |= BIT(0);
|
||||
|
||||
hub->non_rem_dev = USB251XB_DEF_NON_REMOVABLE_DEVICES;
|
||||
cproperty_u32 = of_get_property(np, "non-removable-ports", &len);
|
||||
if (cproperty_u32 && (len / sizeof(u32)) > 0) {
|
||||
for (i = 0; i < len / sizeof(u32); i++) {
|
||||
u32 port = be32_to_cpu(cproperty_u32[i]);
|
||||
|
||||
if ((port >= 1) && (port <= 4))
|
||||
hub->non_rem_dev |= BIT(port);
|
||||
}
|
||||
}
|
||||
|
||||
hub->port_disable_sp = USB251XB_DEF_PORT_DISABLE_SELF;
|
||||
cproperty_u32 = of_get_property(np, "sp-disabled-ports", &len);
|
||||
if (cproperty_u32 && (len / sizeof(u32)) > 0) {
|
||||
for (i = 0; i < len / sizeof(u32); i++) {
|
||||
u32 port = be32_to_cpu(cproperty_u32[i]);
|
||||
|
||||
if ((port >= 1) && (port <= 4))
|
||||
hub->port_disable_sp |= BIT(port);
|
||||
}
|
||||
}
|
||||
|
||||
hub->port_disable_bp = USB251XB_DEF_PORT_DISABLE_BUS;
|
||||
cproperty_u32 = of_get_property(np, "bp-disabled-ports", &len);
|
||||
if (cproperty_u32 && (len / sizeof(u32)) > 0) {
|
||||
for (i = 0; i < len / sizeof(u32); i++) {
|
||||
u32 port = be32_to_cpu(cproperty_u32[i]);
|
||||
|
||||
if ((port >= 1) && (port <= 4))
|
||||
hub->port_disable_bp |= BIT(port);
|
||||
}
|
||||
}
|
||||
|
||||
hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
|
||||
if (!of_property_read_u32(np, "max-sp-power", property_u32))
|
||||
hub->max_power_sp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
||||
250);
|
||||
|
||||
hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
|
||||
if (!of_property_read_u32(np, "max-bp-power", property_u32))
|
||||
hub->max_power_bp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
||||
250);
|
||||
|
||||
hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
|
||||
if (!of_property_read_u32(np, "max-sp-current", property_u32))
|
||||
hub->max_current_sp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
||||
250);
|
||||
|
||||
hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
|
||||
if (!of_property_read_u32(np, "max-bp-current", property_u32))
|
||||
hub->max_current_bp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
||||
250);
|
||||
|
||||
hub->power_on_time = USB251XB_DEF_POWER_ON_TIME;
|
||||
if (!of_property_read_u32(np, "power-on-time", property_u32))
|
||||
hub->power_on_time = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
||||
255);
|
||||
|
||||
if (of_property_read_u16_array(np, "language-id", &hub->lang_id, 1))
|
||||
hub->lang_id = USB251XB_DEF_LANGUAGE_ID;
|
||||
|
||||
cproperty_char = of_get_property(np, "manufacturer", NULL);
|
||||
strlcpy(str, cproperty_char ? : USB251XB_DEF_MANUFACTURER_STRING,
|
||||
sizeof(str));
|
||||
hub->manufacturer_len = strlen(str) & 0xFF;
|
||||
memset(hub->manufacturer, 0, USB251XB_STRING_BUFSIZE);
|
||||
len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str));
|
||||
len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN,
|
||||
(wchar_t *)hub->manufacturer,
|
||||
USB251XB_STRING_BUFSIZE);
|
||||
|
||||
cproperty_char = of_get_property(np, "product", NULL);
|
||||
strlcpy(str, cproperty_char ? : data->product_str, sizeof(str));
|
||||
hub->product_len = strlen(str) & 0xFF;
|
||||
memset(hub->product, 0, USB251XB_STRING_BUFSIZE);
|
||||
len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str));
|
||||
len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN,
|
||||
(wchar_t *)hub->product,
|
||||
USB251XB_STRING_BUFSIZE);
|
||||
|
||||
cproperty_char = of_get_property(np, "serial", NULL);
|
||||
strlcpy(str, cproperty_char ? : USB251XB_DEF_SERIAL_STRING,
|
||||
sizeof(str));
|
||||
hub->serial_len = strlen(str) & 0xFF;
|
||||
memset(hub->serial, 0, USB251XB_STRING_BUFSIZE);
|
||||
len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str));
|
||||
len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN,
|
||||
(wchar_t *)hub->serial,
|
||||
USB251XB_STRING_BUFSIZE);
|
||||
|
||||
/* The following parameters are currently not exposed to devicetree, but
|
||||
* may be as soon as needed.
|
||||
*/
|
||||
hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE;
|
||||
hub->boost_up = USB251XB_DEF_BOOST_UP;
|
||||
hub->boost_x = USB251XB_DEF_BOOST_X;
|
||||
hub->port_swap = USB251XB_DEF_PORT_SWAP;
|
||||
hub->port_map12 = USB251XB_DEF_PORT_MAP_12;
|
||||
hub->port_map34 = USB251XB_DEF_PORT_MAP_34;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id usb251xb_of_match[] = {
|
||||
{
|
||||
.compatible = "microchip,usb2512b",
|
||||
.data = &usb2512b_data,
|
||||
}, {
|
||||
.compatible = "microchip,usb2512bi",
|
||||
.data = &usb2512bi_data,
|
||||
}, {
|
||||
.compatible = "microchip,usb2513b",
|
||||
.data = &usb2513b_data,
|
||||
}, {
|
||||
.compatible = "microchip,usb2513bi",
|
||||
.data = &usb2513bi_data,
|
||||
}, {
|
||||
.compatible = "microchip,usb2514b",
|
||||
.data = &usb2514b_data,
|
||||
}, {
|
||||
.compatible = "microchip,usb2514bi",
|
||||
.data = &usb2514bi_data,
|
||||
}, {
|
||||
/* sentinel */
|
||||
}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, usb251xb_of_match);
|
||||
#else /* CONFIG_OF */
|
||||
static int usb251xb_get_ofdata(struct usb251xb *hub,
|
||||
struct usb251xb_data *data)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif /* CONFIG_OF */
|
||||
|
||||
static int usb251xb_probe(struct usb251xb *hub)
|
||||
{
|
||||
struct device *dev = hub->dev;
|
||||
struct device_node *np = dev->of_node;
|
||||
const struct of_device_id *of_id = of_match_device(usb251xb_of_match,
|
||||
dev);
|
||||
int err;
|
||||
|
||||
if (np) {
|
||||
err = usb251xb_get_ofdata(hub,
|
||||
(struct usb251xb_data *)of_id->data);
|
||||
if (err) {
|
||||
dev_err(dev, "failed to get ofdata: %d\n", err);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
err = usb251xb_connect(hub);
|
||||
if (err) {
|
||||
dev_err(dev, "Failed to connect hub (%d)\n", err);
|
||||
return err;
|
||||
}
|
||||
|
||||
dev_info(dev, "Hub probed successfully\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usb251xb_i2c_probe(struct i2c_client *i2c,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct usb251xb *hub;
|
||||
|
||||
hub = devm_kzalloc(&i2c->dev, sizeof(struct usb251xb), GFP_KERNEL);
|
||||
if (!hub)
|
||||
return -ENOMEM;
|
||||
|
||||
i2c_set_clientdata(i2c, hub);
|
||||
hub->dev = &i2c->dev;
|
||||
hub->i2c = i2c;
|
||||
|
||||
return usb251xb_probe(hub);
|
||||
}
|
||||
|
||||
static const struct i2c_device_id usb251xb_id[] = {
|
||||
{ "usb2512b", 0 },
|
||||
{ "usb2512bi", 0 },
|
||||
{ "usb2513b", 0 },
|
||||
{ "usb2513bi", 0 },
|
||||
{ "usb2514b", 0 },
|
||||
{ "usb2514bi", 0 },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, usb251xb_id);
|
||||
|
||||
static struct i2c_driver usb251xb_i2c_driver = {
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.of_match_table = of_match_ptr(usb251xb_of_match),
|
||||
},
|
||||
.probe = usb251xb_i2c_probe,
|
||||
.id_table = usb251xb_id,
|
||||
};
|
||||
|
||||
module_i2c_driver(usb251xb_i2c_driver);
|
||||
|
||||
MODULE_AUTHOR("Richard Leitner <richard.leitner@skidata.com>");
|
||||
MODULE_DESCRIPTION("USB251xB/xBi USB 2.0 Hub Controller Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user