forked from Minki/linux
[IrDA]: Kingsun Dazzle IrDA USB driver
This dongle does not follow the usb-irda specification, so it needs its own special driver. Just like the Kingsun/Donshine dongle, it exposes two interrupt endpoints. Reception is performed through direct reads from the input endpoint. Transmission requires splitting the IrDA frames into 8-byte segments, in which the first byte encodes how many of the remaining 7 bytes are used as data. Speed change is made with a control URB just like the one in cypress_m8, and it seems to support up to 115200 bps. On plugin, this dongle reports vendor and device IDs: 0x07d0:0x4100 Signed-off-by: Alex Villacís Lasso <a_villacis@palosanto.com> Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Villacís Lasso
David S. Miller
parent
bcb5e0eef3
commit
4a1d7c25cb
@ -162,7 +162,19 @@ config EP7211_DONGLE
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Say Y here if you want to build support for the Cirrus logic
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EP7211 chipset's infrared module.
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config KSDAZZLE_DONGLE
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tristate "KingSun Dazzle IrDA-USB dongle (EXPERIMENTAL)"
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depends on IRDA && USB && EXPERIMENTAL
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help
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Say Y or M here if you want to build support for the KingSun Dazzle
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IrDA-USB bridge device driver.
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This USB bridge does not conform to the IrDA-USB device class
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specification, and therefore needs its own specific driver. This
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dongle supports SIR speeds only (9600 through 115200 bps).
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To compile it as a module, choose M here: the module will be called
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ksdazzle-sir.
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comment "Old SIR device drivers"
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@ -47,6 +47,7 @@ obj-$(CONFIG_MA600_DONGLE) += ma600-sir.o
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obj-$(CONFIG_TOIM3232_DONGLE) += toim3232-sir.o
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obj-$(CONFIG_EP7211_DONGLE) += ep7211-sir.o
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obj-$(CONFIG_KINGSUN_DONGLE) += kingsun-sir.o
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obj-$(CONFIG_KSDAZZLE_DONGLE) += ksdazzle-sir.o
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# The SIR helper module
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sir-dev-objs := sir_dev.o sir_dongle.o
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823
drivers/net/irda/ksdazzle-sir.c
Normal file
823
drivers/net/irda/ksdazzle-sir.c
Normal file
@ -0,0 +1,823 @@
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/*****************************************************************************
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*
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* Filename: ksdazzle.c
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* Version: 0.1.1
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* Description: Irda KingSun Dazzle USB Dongle
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* Status: Experimental
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* Author: Alex Villacís Lasso <a_villacis@palosanto.com>
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*
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* Based on stir4200, mcs7780, kingsun-sir drivers.
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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.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*****************************************************************************/
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/*
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* Following is my most current (2007-07-26) understanding of how the Kingsun
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* 07D0:4100 dongle (sometimes known as the MA-660) is supposed to work. This
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* information was deduced by examining the USB traffic captured with USBSnoopy
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* from the WinXP driver. Feel free to update here as more of the dongle is
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* known.
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*
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* General: This dongle exposes one interface with two interrupt endpoints, one
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* IN and one OUT. In this regard, it is similar to what the Kingsun/Donshine
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* dongle (07c0:4200) exposes. Traffic is raw and needs to be wrapped and
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* unwrapped manually as in stir4200, kingsun-sir, and ks959-sir.
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*
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* Transmission: To transmit an IrDA frame, it is necessary to wrap it, then
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* split it into multiple segments of up to 7 bytes each, and transmit each in
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* sequence. It seems that sending a single big block (like kingsun-sir does)
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* won't work with this dongle. Each segment needs to be prefixed with a value
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* equal to (unsigned char)0xF8 + <number of bytes in segment>, inside a payload
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* of exactly 8 bytes. For example, a segment of 1 byte gets prefixed by 0xF9,
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* and one of 7 bytes gets prefixed by 0xFF. The bytes at the end of the
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* payload, not considered by the prefix, are ignored (set to 0 by this
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* implementation).
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*
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* Reception: To receive data, the driver must poll the dongle regularly (like
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* kingsun-sir.c) with interrupt URBs. If data is available, it will be returned
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* in payloads from 0 to 8 bytes long. When concatenated, these payloads form
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* a raw IrDA stream that needs to be unwrapped as in stir4200 and kingsun-sir
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*
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* Speed change: To change the speed of the dongle, the driver prepares a
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* control URB with the following as a setup packet:
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* bRequestType USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE
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* bRequest 0x09
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* wValue 0x0200
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* wIndex 0x0001
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* wLength 0x0008 (length of the payload)
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* The payload is a 8-byte record, apparently identical to the one used in
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* drivers/usb/serial/cypress_m8.c to change speed:
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* __u32 baudSpeed;
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* unsigned int dataBits : 2; // 0 - 5 bits 3 - 8 bits
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* unsigned int : 1;
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* unsigned int stopBits : 1;
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* unsigned int parityEnable : 1;
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* unsigned int parityType : 1;
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* unsigned int : 1;
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* unsigned int reset : 1;
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* unsigned char reserved[3]; // set to 0
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*
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* For now only SIR speeds have been observed with this dongle. Therefore,
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* nothing is known on what changes (if any) must be done to frame wrapping /
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* unwrapping for higher than SIR speeds. This driver assumes no change is
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* necessary and announces support for all the way to 115200 bps.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kref.h>
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#include <linux/usb.h>
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#include <linux/device.h>
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#include <linux/crc32.h>
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#include <asm/unaligned.h>
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#include <asm/byteorder.h>
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#include <asm/uaccess.h>
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#include <net/irda/irda.h>
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#include <net/irda/wrapper.h>
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#include <net/irda/crc.h>
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#define KSDAZZLE_VENDOR_ID 0x07d0
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#define KSDAZZLE_PRODUCT_ID 0x4100
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/* These are the currently known USB ids */
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static struct usb_device_id dongles[] = {
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/* KingSun Co,Ltd IrDA/USB Bridge */
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{USB_DEVICE(KSDAZZLE_VENDOR_ID, KSDAZZLE_PRODUCT_ID)},
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{}
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};
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MODULE_DEVICE_TABLE(usb, dongles);
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#define KINGSUN_MTT 0x07
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#define KINGSUN_REQ_RECV 0x01
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#define KINGSUN_REQ_SEND 0x09
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#define KINGSUN_SND_FIFO_SIZE 2048 /* Max packet we can send */
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struct ksdazzle_speedparams {
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__le32 baudrate; /* baud rate, little endian */
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__u8 flags;
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__u8 reserved[3];
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} __attribute__ ((packed));
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#define KS_DATA_5_BITS 0x00
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#define KS_DATA_6_BITS 0x01
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#define KS_DATA_7_BITS 0x02
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#define KS_DATA_8_BITS 0x03
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#define KS_STOP_BITS_1 0x00
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#define KS_STOP_BITS_2 0x08
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#define KS_PAR_DISABLE 0x00
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#define KS_PAR_EVEN 0x10
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#define KS_PAR_ODD 0x30
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#define KS_RESET 0x80
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#define KINGSUN_EP_IN 0
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#define KINGSUN_EP_OUT 1
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struct ksdazzle_cb {
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struct usb_device *usbdev; /* init: probe_irda */
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struct net_device *netdev; /* network layer */
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struct irlap_cb *irlap; /* The link layer we are binded to */
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struct net_device_stats stats; /* network statistics */
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struct qos_info qos;
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struct urb *tx_urb;
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__u8 *tx_buf_clear;
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unsigned int tx_buf_clear_used;
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unsigned int tx_buf_clear_sent;
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__u8 tx_payload[8];
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struct urb *rx_urb;
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__u8 rx_payload[8];
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iobuff_t rx_unwrap_buff;
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struct usb_ctrlrequest *speed_setuprequest;
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struct urb *speed_urb;
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struct ksdazzle_speedparams speedparams;
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unsigned int new_speed;
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__u8 ep_in;
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__u8 ep_out;
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spinlock_t lock;
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int receiving;
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};
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/* Callback transmission routine */
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static void ksdazzle_speed_irq(struct urb *urb)
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{
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/* unlink, shutdown, unplug, other nasties */
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if (urb->status != 0) {
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err("ksdazzle_speed_irq: urb asynchronously failed - %d",
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urb->status);
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}
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}
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/* Send a control request to change speed of the dongle */
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static int ksdazzle_change_speed(struct ksdazzle_cb *kingsun, unsigned speed)
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{
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static unsigned int supported_speeds[] = { 2400, 9600, 19200, 38400,
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57600, 115200, 576000, 1152000, 4000000, 0
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};
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int err;
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unsigned int i;
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if (kingsun->speed_setuprequest == NULL || kingsun->speed_urb == NULL)
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return -ENOMEM;
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/* Check that requested speed is among the supported ones */
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for (i = 0; supported_speeds[i] && supported_speeds[i] != speed; i++) ;
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if (supported_speeds[i] == 0)
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return -EOPNOTSUPP;
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memset(&(kingsun->speedparams), 0, sizeof(struct ksdazzle_speedparams));
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kingsun->speedparams.baudrate = cpu_to_le32(speed);
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kingsun->speedparams.flags = KS_DATA_8_BITS;
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/* speed_setuprequest pre-filled in ksdazzle_probe */
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usb_fill_control_urb(kingsun->speed_urb, kingsun->usbdev,
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usb_sndctrlpipe(kingsun->usbdev, 0),
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(unsigned char *)kingsun->speed_setuprequest,
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&(kingsun->speedparams),
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sizeof(struct ksdazzle_speedparams),
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ksdazzle_speed_irq, kingsun);
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kingsun->speed_urb->status = 0;
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err = usb_submit_urb(kingsun->speed_urb, GFP_ATOMIC);
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return err;
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}
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/* Submit one fragment of an IrDA frame to the dongle */
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static void ksdazzle_send_irq(struct urb *urb);
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static int ksdazzle_submit_tx_fragment(struct ksdazzle_cb *kingsun)
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{
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unsigned int wraplen;
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int ret;
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/* We can send at most 7 bytes of payload at a time */
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wraplen = 7;
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if (wraplen > kingsun->tx_buf_clear_used)
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wraplen = kingsun->tx_buf_clear_used;
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/* Prepare payload prefix with used length */
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memset(kingsun->tx_payload, 0, 8);
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kingsun->tx_payload[0] = (unsigned char)0xf8 + wraplen;
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memcpy(kingsun->tx_payload + 1, kingsun->tx_buf_clear, wraplen);
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usb_fill_int_urb(kingsun->tx_urb, kingsun->usbdev,
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usb_sndintpipe(kingsun->usbdev, kingsun->ep_out),
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kingsun->tx_payload, 8, ksdazzle_send_irq, kingsun, 1);
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kingsun->tx_urb->status = 0;
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ret = usb_submit_urb(kingsun->tx_urb, GFP_ATOMIC);
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/* Remember how much data was sent, in order to update at callback */
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kingsun->tx_buf_clear_sent = (ret == 0) ? wraplen : 0;
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return ret;
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}
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/* Callback transmission routine */
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static void ksdazzle_send_irq(struct urb *urb)
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{
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struct ksdazzle_cb *kingsun = urb->context;
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struct net_device *netdev = kingsun->netdev;
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int ret = 0;
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/* in process of stopping, just drop data */
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if (!netif_running(kingsun->netdev)) {
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err("ksdazzle_send_irq: Network not running!");
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return;
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}
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/* unlink, shutdown, unplug, other nasties */
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if (urb->status != 0) {
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err("ksdazzle_send_irq: urb asynchronously failed - %d",
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urb->status);
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return;
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}
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if (kingsun->tx_buf_clear_used > 0) {
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/* Update data remaining to be sent */
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if (kingsun->tx_buf_clear_sent < kingsun->tx_buf_clear_used) {
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memmove(kingsun->tx_buf_clear,
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kingsun->tx_buf_clear +
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kingsun->tx_buf_clear_sent,
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kingsun->tx_buf_clear_used -
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kingsun->tx_buf_clear_sent);
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}
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kingsun->tx_buf_clear_used -= kingsun->tx_buf_clear_sent;
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kingsun->tx_buf_clear_sent = 0;
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if (kingsun->tx_buf_clear_used > 0) {
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/* There is more data to be sent */
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if ((ret = ksdazzle_submit_tx_fragment(kingsun)) != 0) {
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err("ksdazzle_send_irq: failed tx_urb submit: %d", ret);
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switch (ret) {
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case -ENODEV:
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case -EPIPE:
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break;
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default:
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kingsun->stats.tx_errors++;
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netif_start_queue(netdev);
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}
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}
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} else {
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/* All data sent, send next speed && wake network queue */
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if (kingsun->new_speed != -1 &&
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cpu_to_le32(kingsun->new_speed) !=
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kingsun->speedparams.baudrate)
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ksdazzle_change_speed(kingsun,
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kingsun->new_speed);
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netif_wake_queue(netdev);
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}
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}
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}
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/*
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* Called from net/core when new frame is available.
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*/
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static int ksdazzle_hard_xmit(struct sk_buff *skb, struct net_device *netdev)
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{
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struct ksdazzle_cb *kingsun;
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unsigned int wraplen;
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int ret = 0;
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if (skb == NULL || netdev == NULL)
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return -EINVAL;
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netif_stop_queue(netdev);
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/* the IRDA wrapping routines don't deal with non linear skb */
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SKB_LINEAR_ASSERT(skb);
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kingsun = netdev_priv(netdev);
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spin_lock(&kingsun->lock);
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kingsun->new_speed = irda_get_next_speed(skb);
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/* Append data to the end of whatever data remains to be transmitted */
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wraplen =
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async_wrap_skb(skb, kingsun->tx_buf_clear, KINGSUN_SND_FIFO_SIZE);
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kingsun->tx_buf_clear_used = wraplen;
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if ((ret = ksdazzle_submit_tx_fragment(kingsun)) != 0) {
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err("ksdazzle_hard_xmit: failed tx_urb submit: %d", ret);
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switch (ret) {
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case -ENODEV:
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case -EPIPE:
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break;
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default:
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kingsun->stats.tx_errors++;
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netif_start_queue(netdev);
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}
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} else {
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kingsun->stats.tx_packets++;
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kingsun->stats.tx_bytes += skb->len;
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}
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dev_kfree_skb(skb);
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spin_unlock(&kingsun->lock);
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return ret;
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}
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/* Receive callback function */
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static void ksdazzle_rcv_irq(struct urb *urb)
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{
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struct ksdazzle_cb *kingsun = urb->context;
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/* in process of stopping, just drop data */
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if (!netif_running(kingsun->netdev)) {
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kingsun->receiving = 0;
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return;
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}
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/* unlink, shutdown, unplug, other nasties */
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if (urb->status != 0) {
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err("ksdazzle_rcv_irq: urb asynchronously failed - %d",
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urb->status);
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kingsun->receiving = 0;
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return;
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}
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if (urb->actual_length > 0) {
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__u8 *bytes = urb->transfer_buffer;
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unsigned int i;
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for (i = 0; i < urb->actual_length; i++) {
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async_unwrap_char(kingsun->netdev, &kingsun->stats,
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&kingsun->rx_unwrap_buff, bytes[i]);
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}
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kingsun->netdev->last_rx = jiffies;
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kingsun->receiving =
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(kingsun->rx_unwrap_buff.state != OUTSIDE_FRAME) ? 1 : 0;
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}
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/* This urb has already been filled in ksdazzle_net_open. It is assumed that
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urb keeps the pointer to the payload buffer.
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*/
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urb->status = 0;
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usb_submit_urb(urb, GFP_ATOMIC);
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}
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/*
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* Function ksdazzle_net_open (dev)
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*
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* Network device is taken up. Usually this is done by "ifconfig irda0 up"
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*/
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static int ksdazzle_net_open(struct net_device *netdev)
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{
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struct ksdazzle_cb *kingsun = netdev_priv(netdev);
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int err = -ENOMEM;
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char hwname[16];
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/* At this point, urbs are NULL, and skb is NULL (see ksdazzle_probe) */
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kingsun->receiving = 0;
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/* Initialize for SIR to copy data directly into skb. */
|
||||
kingsun->rx_unwrap_buff.in_frame = FALSE;
|
||||
kingsun->rx_unwrap_buff.state = OUTSIDE_FRAME;
|
||||
kingsun->rx_unwrap_buff.truesize = IRDA_SKB_MAX_MTU;
|
||||
kingsun->rx_unwrap_buff.skb = dev_alloc_skb(IRDA_SKB_MAX_MTU);
|
||||
if (!kingsun->rx_unwrap_buff.skb)
|
||||
goto free_mem;
|
||||
|
||||
skb_reserve(kingsun->rx_unwrap_buff.skb, 1);
|
||||
kingsun->rx_unwrap_buff.head = kingsun->rx_unwrap_buff.skb->data;
|
||||
|
||||
kingsun->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (!kingsun->rx_urb)
|
||||
goto free_mem;
|
||||
|
||||
kingsun->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (!kingsun->tx_urb)
|
||||
goto free_mem;
|
||||
|
||||
kingsun->speed_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (!kingsun->speed_urb)
|
||||
goto free_mem;
|
||||
|
||||
/* Initialize speed for dongle */
|
||||
kingsun->new_speed = 9600;
|
||||
err = ksdazzle_change_speed(kingsun, 9600);
|
||||
if (err < 0)
|
||||
goto free_mem;
|
||||
|
||||
/*
|
||||
* Now that everything should be initialized properly,
|
||||
* Open new IrLAP layer instance to take care of us...
|
||||
*/
|
||||
sprintf(hwname, "usb#%d", kingsun->usbdev->devnum);
|
||||
kingsun->irlap = irlap_open(netdev, &kingsun->qos, hwname);
|
||||
if (!kingsun->irlap) {
|
||||
err("ksdazzle-sir: irlap_open failed");
|
||||
goto free_mem;
|
||||
}
|
||||
|
||||
/* Start reception. */
|
||||
usb_fill_int_urb(kingsun->rx_urb, kingsun->usbdev,
|
||||
usb_rcvintpipe(kingsun->usbdev, kingsun->ep_in),
|
||||
kingsun->rx_payload, 8, ksdazzle_rcv_irq, kingsun, 1);
|
||||
kingsun->rx_urb->status = 0;
|
||||
err = usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
|
||||
if (err) {
|
||||
err("ksdazzle-sir: first urb-submit failed: %d", err);
|
||||
goto close_irlap;
|
||||
}
|
||||
|
||||
netif_start_queue(netdev);
|
||||
|
||||
/* Situation at this point:
|
||||
- all work buffers allocated
|
||||
- urbs allocated and ready to fill
|
||||
- max rx packet known (in max_rx)
|
||||
- unwrap state machine initialized, in state outside of any frame
|
||||
- receive request in progress
|
||||
- IrLAP layer started, about to hand over packets to send
|
||||
*/
|
||||
|
||||
return 0;
|
||||
|
||||
close_irlap:
|
||||
irlap_close(kingsun->irlap);
|
||||
free_mem:
|
||||
usb_free_urb(kingsun->speed_urb);
|
||||
kingsun->speed_urb = NULL;
|
||||
usb_free_urb(kingsun->tx_urb);
|
||||
kingsun->tx_urb = NULL;
|
||||
usb_free_urb(kingsun->rx_urb);
|
||||
kingsun->rx_urb = NULL;
|
||||
if (kingsun->rx_unwrap_buff.skb) {
|
||||
kfree_skb(kingsun->rx_unwrap_buff.skb);
|
||||
kingsun->rx_unwrap_buff.skb = NULL;
|
||||
kingsun->rx_unwrap_buff.head = NULL;
|
||||
}
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* Function ksdazzle_net_close (dev)
|
||||
*
|
||||
* Network device is taken down. Usually this is done by
|
||||
* "ifconfig irda0 down"
|
||||
*/
|
||||
static int ksdazzle_net_close(struct net_device *netdev)
|
||||
{
|
||||
struct ksdazzle_cb *kingsun = netdev_priv(netdev);
|
||||
|
||||
/* Stop transmit processing */
|
||||
netif_stop_queue(netdev);
|
||||
|
||||
/* Mop up receive && transmit urb's */
|
||||
usb_kill_urb(kingsun->tx_urb);
|
||||
usb_free_urb(kingsun->tx_urb);
|
||||
kingsun->tx_urb = NULL;
|
||||
|
||||
usb_kill_urb(kingsun->speed_urb);
|
||||
usb_free_urb(kingsun->speed_urb);
|
||||
kingsun->speed_urb = NULL;
|
||||
|
||||
usb_kill_urb(kingsun->rx_urb);
|
||||
usb_free_urb(kingsun->rx_urb);
|
||||
kingsun->rx_urb = NULL;
|
||||
|
||||
kfree_skb(kingsun->rx_unwrap_buff.skb);
|
||||
kingsun->rx_unwrap_buff.skb = NULL;
|
||||
kingsun->rx_unwrap_buff.head = NULL;
|
||||
kingsun->rx_unwrap_buff.in_frame = FALSE;
|
||||
kingsun->rx_unwrap_buff.state = OUTSIDE_FRAME;
|
||||
kingsun->receiving = 0;
|
||||
|
||||
/* Stop and remove instance of IrLAP */
|
||||
irlap_close(kingsun->irlap);
|
||||
|
||||
kingsun->irlap = NULL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* IOCTLs : Extra out-of-band network commands...
|
||||
*/
|
||||
static int ksdazzle_net_ioctl(struct net_device *netdev, struct ifreq *rq,
|
||||
int cmd)
|
||||
{
|
||||
struct if_irda_req *irq = (struct if_irda_req *)rq;
|
||||
struct ksdazzle_cb *kingsun = netdev_priv(netdev);
|
||||
int ret = 0;
|
||||
|
||||
switch (cmd) {
|
||||
case SIOCSBANDWIDTH: /* Set bandwidth */
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
/* Check if the device is still there */
|
||||
if (netif_device_present(kingsun->netdev))
|
||||
return ksdazzle_change_speed(kingsun,
|
||||
irq->ifr_baudrate);
|
||||
break;
|
||||
|
||||
case SIOCSMEDIABUSY: /* Set media busy */
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
/* Check if the IrDA stack is still there */
|
||||
if (netif_running(kingsun->netdev))
|
||||
irda_device_set_media_busy(kingsun->netdev, TRUE);
|
||||
break;
|
||||
|
||||
case SIOCGRECEIVING:
|
||||
/* Only approximately true */
|
||||
irq->ifr_receiving = kingsun->receiving;
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Get device stats (for /proc/net/dev and ifconfig)
|
||||
*/
|
||||
static struct net_device_stats *ksdazzle_net_get_stats(struct net_device
|
||||
*netdev)
|
||||
{
|
||||
struct ksdazzle_cb *kingsun = netdev_priv(netdev);
|
||||
return &kingsun->stats;
|
||||
}
|
||||
|
||||
/*
|
||||
* This routine is called by the USB subsystem for each new device
|
||||
* in the system. We need to check if the device is ours, and in
|
||||
* this case start handling it.
|
||||
*/
|
||||
static int ksdazzle_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
struct usb_host_interface *interface;
|
||||
struct usb_endpoint_descriptor *endpoint;
|
||||
|
||||
struct usb_device *dev = interface_to_usbdev(intf);
|
||||
struct ksdazzle_cb *kingsun = NULL;
|
||||
struct net_device *net = NULL;
|
||||
int ret = -ENOMEM;
|
||||
int pipe, maxp_in, maxp_out;
|
||||
__u8 ep_in;
|
||||
__u8 ep_out;
|
||||
|
||||
/* Check that there really are two interrupt endpoints. Check based on the
|
||||
one in drivers/usb/input/usbmouse.c
|
||||
*/
|
||||
interface = intf->cur_altsetting;
|
||||
if (interface->desc.bNumEndpoints != 2) {
|
||||
err("ksdazzle: expected 2 endpoints, found %d",
|
||||
interface->desc.bNumEndpoints);
|
||||
return -ENODEV;
|
||||
}
|
||||
endpoint = &interface->endpoint[KINGSUN_EP_IN].desc;
|
||||
if (!usb_endpoint_is_int_in(endpoint)) {
|
||||
err("ksdazzle: endpoint 0 is not interrupt IN");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ep_in = endpoint->bEndpointAddress;
|
||||
pipe = usb_rcvintpipe(dev, ep_in);
|
||||
maxp_in = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
|
||||
if (maxp_in > 255 || maxp_in <= 1) {
|
||||
err("ksdazzle: endpoint 0 has max packet size %d not in range [2..255]", maxp_in);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
endpoint = &interface->endpoint[KINGSUN_EP_OUT].desc;
|
||||
if (!usb_endpoint_is_int_out(endpoint)) {
|
||||
err("ksdazzle: endpoint 1 is not interrupt OUT");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ep_out = endpoint->bEndpointAddress;
|
||||
pipe = usb_sndintpipe(dev, ep_out);
|
||||
maxp_out = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
|
||||
|
||||
/* Allocate network device container. */
|
||||
net = alloc_irdadev(sizeof(*kingsun));
|
||||
if (!net)
|
||||
goto err_out1;
|
||||
|
||||
SET_MODULE_OWNER(net);
|
||||
SET_NETDEV_DEV(net, &intf->dev);
|
||||
kingsun = netdev_priv(net);
|
||||
kingsun->netdev = net;
|
||||
kingsun->usbdev = dev;
|
||||
kingsun->ep_in = ep_in;
|
||||
kingsun->ep_out = ep_out;
|
||||
kingsun->irlap = NULL;
|
||||
kingsun->tx_urb = NULL;
|
||||
kingsun->tx_buf_clear = NULL;
|
||||
kingsun->tx_buf_clear_used = 0;
|
||||
kingsun->tx_buf_clear_sent = 0;
|
||||
|
||||
kingsun->rx_urb = NULL;
|
||||
kingsun->rx_unwrap_buff.in_frame = FALSE;
|
||||
kingsun->rx_unwrap_buff.state = OUTSIDE_FRAME;
|
||||
kingsun->rx_unwrap_buff.skb = NULL;
|
||||
kingsun->receiving = 0;
|
||||
spin_lock_init(&kingsun->lock);
|
||||
|
||||
kingsun->speed_setuprequest = NULL;
|
||||
kingsun->speed_urb = NULL;
|
||||
kingsun->speedparams.baudrate = 0;
|
||||
|
||||
/* Allocate output buffer */
|
||||
kingsun->tx_buf_clear = kmalloc(KINGSUN_SND_FIFO_SIZE, GFP_KERNEL);
|
||||
if (!kingsun->tx_buf_clear)
|
||||
goto free_mem;
|
||||
|
||||
/* Allocate and initialize speed setup packet */
|
||||
kingsun->speed_setuprequest =
|
||||
kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
|
||||
if (!kingsun->speed_setuprequest)
|
||||
goto free_mem;
|
||||
kingsun->speed_setuprequest->bRequestType =
|
||||
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
|
||||
kingsun->speed_setuprequest->bRequest = KINGSUN_REQ_SEND;
|
||||
kingsun->speed_setuprequest->wValue = cpu_to_le16(0x0200);
|
||||
kingsun->speed_setuprequest->wIndex = cpu_to_le16(0x0001);
|
||||
kingsun->speed_setuprequest->wLength =
|
||||
cpu_to_le16(sizeof(struct ksdazzle_speedparams));
|
||||
|
||||
printk(KERN_INFO "KingSun/Dazzle IRDA/USB found at address %d, "
|
||||
"Vendor: %x, Product: %x\n",
|
||||
dev->devnum, le16_to_cpu(dev->descriptor.idVendor),
|
||||
le16_to_cpu(dev->descriptor.idProduct));
|
||||
|
||||
/* Initialize QoS for this device */
|
||||
irda_init_max_qos_capabilies(&kingsun->qos);
|
||||
|
||||
/* Baud rates known to be supported. Please uncomment if devices (other
|
||||
than a SonyEriccson K300 phone) can be shown to support higher speeds
|
||||
with this dongle.
|
||||
*/
|
||||
kingsun->qos.baud_rate.bits =
|
||||
IR_2400 | IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200;
|
||||
kingsun->qos.min_turn_time.bits &= KINGSUN_MTT;
|
||||
irda_qos_bits_to_value(&kingsun->qos);
|
||||
|
||||
/* Override the network functions we need to use */
|
||||
net->hard_start_xmit = ksdazzle_hard_xmit;
|
||||
net->open = ksdazzle_net_open;
|
||||
net->stop = ksdazzle_net_close;
|
||||
net->get_stats = ksdazzle_net_get_stats;
|
||||
net->do_ioctl = ksdazzle_net_ioctl;
|
||||
|
||||
ret = register_netdev(net);
|
||||
if (ret != 0)
|
||||
goto free_mem;
|
||||
|
||||
info("IrDA: Registered KingSun/Dazzle device %s", net->name);
|
||||
|
||||
usb_set_intfdata(intf, kingsun);
|
||||
|
||||
/* Situation at this point:
|
||||
- all work buffers allocated
|
||||
- setup requests pre-filled
|
||||
- urbs not allocated, set to NULL
|
||||
- max rx packet known (is KINGSUN_FIFO_SIZE)
|
||||
- unwrap state machine (partially) initialized, but skb == NULL
|
||||
*/
|
||||
|
||||
return 0;
|
||||
|
||||
free_mem:
|
||||
kfree(kingsun->speed_setuprequest);
|
||||
kfree(kingsun->tx_buf_clear);
|
||||
free_netdev(net);
|
||||
err_out1:
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* The current device is removed, the USB layer tell us to shut it down...
|
||||
*/
|
||||
static void ksdazzle_disconnect(struct usb_interface *intf)
|
||||
{
|
||||
struct ksdazzle_cb *kingsun = usb_get_intfdata(intf);
|
||||
|
||||
if (!kingsun)
|
||||
return;
|
||||
|
||||
unregister_netdev(kingsun->netdev);
|
||||
|
||||
/* Mop up receive && transmit urb's */
|
||||
usb_kill_urb(kingsun->speed_urb);
|
||||
usb_free_urb(kingsun->speed_urb);
|
||||
kingsun->speed_urb = NULL;
|
||||
|
||||
usb_kill_urb(kingsun->tx_urb);
|
||||
usb_free_urb(kingsun->tx_urb);
|
||||
kingsun->tx_urb = NULL;
|
||||
|
||||
usb_kill_urb(kingsun->rx_urb);
|
||||
usb_free_urb(kingsun->rx_urb);
|
||||
kingsun->rx_urb = NULL;
|
||||
|
||||
kfree(kingsun->speed_setuprequest);
|
||||
kfree(kingsun->tx_buf_clear);
|
||||
free_netdev(kingsun->netdev);
|
||||
|
||||
usb_set_intfdata(intf, NULL);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
/* USB suspend, so power off the transmitter/receiver */
|
||||
static int ksdazzle_suspend(struct usb_interface *intf, pm_message_t message)
|
||||
{
|
||||
struct ksdazzle_cb *kingsun = usb_get_intfdata(intf);
|
||||
|
||||
netif_device_detach(kingsun->netdev);
|
||||
if (kingsun->speed_urb != NULL)
|
||||
usb_kill_urb(kingsun->speed_urb);
|
||||
if (kingsun->tx_urb != NULL)
|
||||
usb_kill_urb(kingsun->tx_urb);
|
||||
if (kingsun->rx_urb != NULL)
|
||||
usb_kill_urb(kingsun->rx_urb);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Coming out of suspend, so reset hardware */
|
||||
static int ksdazzle_resume(struct usb_interface *intf)
|
||||
{
|
||||
struct ksdazzle_cb *kingsun = usb_get_intfdata(intf);
|
||||
|
||||
if (kingsun->rx_urb != NULL) {
|
||||
/* Setup request already filled in ksdazzle_probe */
|
||||
usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
|
||||
}
|
||||
netif_device_attach(kingsun->netdev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* USB device callbacks
|
||||
*/
|
||||
static struct usb_driver irda_driver = {
|
||||
.name = "ksdazzle-sir",
|
||||
.probe = ksdazzle_probe,
|
||||
.disconnect = ksdazzle_disconnect,
|
||||
.id_table = dongles,
|
||||
#ifdef CONFIG_PM
|
||||
.suspend = ksdazzle_suspend,
|
||||
.resume = ksdazzle_resume,
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
* Module insertion
|
||||
*/
|
||||
static int __init ksdazzle_init(void)
|
||||
{
|
||||
return usb_register(&irda_driver);
|
||||
}
|
||||
|
||||
module_init(ksdazzle_init);
|
||||
|
||||
/*
|
||||
* Module removal
|
||||
*/
|
||||
static void __exit ksdazzle_cleanup(void)
|
||||
{
|
||||
/* Deregister the driver and remove all pending instances */
|
||||
usb_deregister(&irda_driver);
|
||||
}
|
||||
|
||||
module_exit(ksdazzle_cleanup);
|
||||
|
||||
MODULE_AUTHOR("Alex Villacís Lasso <a_villacis@palosanto.com>");
|
||||
MODULE_DESCRIPTION("IrDA-USB Dongle Driver for KingSun Dazzle");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user