![Andi Shyti](/assets/img/avatar_default.png)
The driver type can be assigned immediately when an RC device requests to the framework to allocate the device. This is an 'enum rc_driver_type' data type and specifies whether the device is a raw receiver or scancode receiver. The type will be given as parameter to the rc_allocate_device device. Change accordingly all the drivers calling rc_allocate_device() so that the device type is specified during the rc device allocation. Whenever the device type is not specified, it will be set as RC_DRIVER_SCANCODE which was the default '0' value. Suggested-by: Sean Young <sean@mess.org> Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
1194 lines
32 KiB
C
1194 lines
32 KiB
C
/*
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* USB RedRat3 IR Transceiver rc-core driver
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*
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* Copyright (c) 2011 by Jarod Wilson <jarod@redhat.com>
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* based heavily on the work of Stephen Cox, with additional
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* help from RedRat Ltd.
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*
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* This driver began life based an an old version of the first-generation
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* lirc_mceusb driver from the lirc 0.7.2 distribution. It was then
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* significantly rewritten by Stephen Cox with the aid of RedRat Ltd's
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* Chris Dodge.
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*
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* The driver was then ported to rc-core and significantly rewritten again,
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* by Jarod, using the in-kernel mceusb driver as a guide, after an initial
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* port effort was started by Stephen.
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*
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* TODO LIST:
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* - fix lirc not showing repeats properly
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* --
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*
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* The RedRat3 is a USB transceiver with both send & receive,
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* with 2 separate sensors available for receive to enable
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* both good long range reception for general use, and good
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* short range reception when required for learning a signal.
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*
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* http://www.redrat.co.uk/
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*
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* It uses its own little protocol to communicate, the required
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* parts of which are embedded within this driver.
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* --
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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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*/
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#include <asm/unaligned.h>
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#include <linux/device.h>
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#include <linux/leds.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/usb/input.h>
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#include <media/rc-core.h>
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/* Driver Information */
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#define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"
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#define DRIVER_AUTHOR2 "The Dweller, Stephen Cox"
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#define DRIVER_DESC "RedRat3 USB IR Transceiver Driver"
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#define DRIVER_NAME "redrat3"
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/* bulk data transfer types */
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#define RR3_ERROR 0x01
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#define RR3_MOD_SIGNAL_IN 0x20
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#define RR3_MOD_SIGNAL_OUT 0x21
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/* Get the RR firmware version */
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#define RR3_FW_VERSION 0xb1
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#define RR3_FW_VERSION_LEN 64
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/* Send encoded signal bulk-sent earlier*/
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#define RR3_TX_SEND_SIGNAL 0xb3
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#define RR3_SET_IR_PARAM 0xb7
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#define RR3_GET_IR_PARAM 0xb8
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/* Blink the red LED on the device */
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#define RR3_BLINK_LED 0xb9
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/* Read serial number of device */
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#define RR3_READ_SER_NO 0xba
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#define RR3_SER_NO_LEN 4
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/* Start capture with the RC receiver */
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#define RR3_RC_DET_ENABLE 0xbb
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/* Stop capture with the RC receiver */
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#define RR3_RC_DET_DISABLE 0xbc
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/* Start capture with the wideband receiver */
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#define RR3_MODSIG_CAPTURE 0xb2
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/* Return the status of RC detector capture */
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#define RR3_RC_DET_STATUS 0xbd
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/* Reset redrat */
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#define RR3_RESET 0xa0
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/* Max number of lengths in the signal. */
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#define RR3_IR_IO_MAX_LENGTHS 0x01
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/* Periods to measure mod. freq. */
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#define RR3_IR_IO_PERIODS_MF 0x02
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/* Size of memory for main signal data */
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#define RR3_IR_IO_SIG_MEM_SIZE 0x03
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/* Delta value when measuring lengths */
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#define RR3_IR_IO_LENGTH_FUZZ 0x04
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/* Timeout for end of signal detection */
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#define RR3_IR_IO_SIG_TIMEOUT 0x05
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/* Minimum value for pause recognition. */
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#define RR3_IR_IO_MIN_PAUSE 0x06
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/* Clock freq. of EZ-USB chip */
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#define RR3_CLK 24000000
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/* Clock periods per timer count */
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#define RR3_CLK_PER_COUNT 12
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/* (RR3_CLK / RR3_CLK_PER_COUNT) */
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#define RR3_CLK_CONV_FACTOR 2000000
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/* USB bulk-in wideband IR data endpoint address */
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#define RR3_WIDE_IN_EP_ADDR 0x81
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/* USB bulk-in narrowband IR data endpoint address */
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#define RR3_NARROW_IN_EP_ADDR 0x82
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/* Size of the fixed-length portion of the signal */
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#define RR3_DRIVER_MAXLENS 255
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#define RR3_MAX_SIG_SIZE 512
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#define RR3_TIME_UNIT 50
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#define RR3_END_OF_SIGNAL 0x7f
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#define RR3_TX_TRAILER_LEN 2
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#define RR3_RX_MIN_TIMEOUT 5
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#define RR3_RX_MAX_TIMEOUT 2000
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/* The 8051's CPUCS Register address */
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#define RR3_CPUCS_REG_ADDR 0x7f92
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#define USB_RR3USB_VENDOR_ID 0x112a
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#define USB_RR3USB_PRODUCT_ID 0x0001
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#define USB_RR3IIUSB_PRODUCT_ID 0x0005
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/*
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* The redrat3 encodes an IR signal as set of different lengths and a set
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* of indices into those lengths. This sets how much two lengths must
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* differ before they are considered distinct, the value is specified
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* in microseconds.
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* Default 5, value 0 to 127.
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*/
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static int length_fuzz = 5;
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module_param(length_fuzz, uint, 0644);
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MODULE_PARM_DESC(length_fuzz, "Length Fuzz (0-127)");
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/*
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* When receiving a continuous ir stream (for example when a user is
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* holding a button down on a remote), this specifies the minimum size
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* of a space when the redrat3 sends a irdata packet to the host. Specified
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* in miliseconds. Default value 18ms.
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* The value can be between 2 and 30 inclusive.
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*/
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static int minimum_pause = 18;
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module_param(minimum_pause, uint, 0644);
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MODULE_PARM_DESC(minimum_pause, "Minimum Pause in ms (2-30)");
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/*
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* The carrier frequency is measured during the first pulse of the IR
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* signal. The larger the number of periods used To measure, the more
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* accurate the result is likely to be, however some signals have short
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* initial pulses, so in some case it may be necessary to reduce this value.
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* Default 8, value 1 to 255.
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*/
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static int periods_measure_carrier = 8;
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module_param(periods_measure_carrier, uint, 0644);
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MODULE_PARM_DESC(periods_measure_carrier, "Number of Periods to Measure Carrier (1-255)");
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struct redrat3_header {
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__be16 length;
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__be16 transfer_type;
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} __packed;
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/* sending and receiving irdata */
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struct redrat3_irdata {
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struct redrat3_header header;
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__be32 pause;
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__be16 mod_freq_count;
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__be16 num_periods;
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__u8 max_lengths;
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__u8 no_lengths;
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__be16 max_sig_size;
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__be16 sig_size;
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__u8 no_repeats;
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__be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */
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__u8 sigdata[RR3_MAX_SIG_SIZE];
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} __packed;
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/* firmware errors */
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struct redrat3_error {
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struct redrat3_header header;
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__be16 fw_error;
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} __packed;
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/* table of devices that work with this driver */
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static struct usb_device_id redrat3_dev_table[] = {
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/* Original version of the RedRat3 */
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{USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)},
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/* Second Version/release of the RedRat3 - RetRat3-II */
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{USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)},
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{} /* Terminating entry */
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};
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/* Structure to hold all of our device specific stuff */
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struct redrat3_dev {
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/* core device bits */
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struct rc_dev *rc;
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struct device *dev;
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/* led control */
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struct led_classdev led;
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atomic_t flash;
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struct usb_ctrlrequest flash_control;
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struct urb *flash_urb;
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u8 flash_in_buf;
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/* learning */
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bool wideband;
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struct usb_ctrlrequest learn_control;
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struct urb *learn_urb;
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u8 learn_buf;
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/* save off the usb device pointer */
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struct usb_device *udev;
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/* the receive endpoint */
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struct usb_endpoint_descriptor *ep_narrow;
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/* the buffer to receive data */
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void *bulk_in_buf;
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/* urb used to read ir data */
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struct urb *narrow_urb;
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struct urb *wide_urb;
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/* the send endpoint */
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struct usb_endpoint_descriptor *ep_out;
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/* usb dma */
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dma_addr_t dma_in;
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/* Is the device currently transmitting?*/
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bool transmitting;
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/* store for current packet */
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struct redrat3_irdata irdata;
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u16 bytes_read;
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u32 carrier;
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char name[64];
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char phys[64];
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};
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static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
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{
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if (!rr3->transmitting && (code != 0x40))
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dev_info(rr3->dev, "fw error code 0x%02x: ", code);
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switch (code) {
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case 0x00:
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pr_cont("No Error\n");
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break;
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/* Codes 0x20 through 0x2f are IR Firmware Errors */
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case 0x20:
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pr_cont("Initial signal pulse not long enough to measure carrier frequency\n");
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break;
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case 0x21:
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pr_cont("Not enough length values allocated for signal\n");
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break;
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case 0x22:
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pr_cont("Not enough memory allocated for signal data\n");
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break;
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case 0x23:
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pr_cont("Too many signal repeats\n");
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break;
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case 0x28:
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pr_cont("Insufficient memory available for IR signal data memory allocation\n");
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break;
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case 0x29:
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pr_cont("Insufficient memory available for IrDa signal data memory allocation\n");
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break;
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/* Codes 0x30 through 0x3f are USB Firmware Errors */
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case 0x30:
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pr_cont("Insufficient memory available for bulk transfer structure\n");
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break;
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/*
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* Other error codes... These are primarily errors that can occur in
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* the control messages sent to the redrat
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*/
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case 0x40:
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if (!rr3->transmitting)
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pr_cont("Signal capture has been terminated\n");
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break;
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case 0x41:
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pr_cont("Attempt to set/get and unknown signal I/O algorithm parameter\n");
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break;
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case 0x42:
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pr_cont("Signal capture already started\n");
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break;
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default:
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pr_cont("Unknown Error\n");
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break;
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}
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}
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static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata)
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{
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u32 mod_freq = 0;
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u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count);
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if (mod_freq_count != 0)
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mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) /
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(mod_freq_count * RR3_CLK_PER_COUNT);
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return mod_freq;
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}
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/* this function scales down the figures for the same result... */
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static u32 redrat3_len_to_us(u32 length)
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{
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u32 biglen = length * 1000;
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u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
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u32 result = (u32) (biglen / divisor);
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/* don't allow zero lengths to go back, breaks lirc */
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return result ? result : 1;
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}
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/*
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* convert us back into redrat3 lengths
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*
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* length * 1000 length * 1000000
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* ------------- = ---------------- = micro
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* rr3clk / 1000 rr3clk
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* 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000
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* ----- = 4 ----- = 6 -------------- = len ---------------------
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* 3 2 1000000 1000
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*/
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static u32 redrat3_us_to_len(u32 microsec)
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{
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u32 result;
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u32 divisor;
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microsec = (microsec > IR_MAX_DURATION) ? IR_MAX_DURATION : microsec;
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divisor = (RR3_CLK_CONV_FACTOR / 1000);
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result = (u32)(microsec * divisor) / 1000;
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/* don't allow zero lengths to go back, breaks lirc */
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return result ? result : 1;
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}
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static void redrat3_process_ir_data(struct redrat3_dev *rr3)
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{
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DEFINE_IR_RAW_EVENT(rawir);
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struct device *dev;
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unsigned int i, sig_size, single_len, offset, val;
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u32 mod_freq;
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dev = rr3->dev;
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mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);
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dev_dbg(dev, "Got mod_freq of %u\n", mod_freq);
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if (mod_freq && rr3->wideband) {
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DEFINE_IR_RAW_EVENT(ev);
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ev.carrier_report = 1;
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ev.carrier = mod_freq;
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ir_raw_event_store(rr3->rc, &ev);
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}
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/* process each rr3 encoded byte into an int */
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sig_size = be16_to_cpu(rr3->irdata.sig_size);
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for (i = 0; i < sig_size; i++) {
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offset = rr3->irdata.sigdata[i];
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val = get_unaligned_be16(&rr3->irdata.lens[offset]);
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single_len = redrat3_len_to_us(val);
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/* we should always get pulse/space/pulse/space samples */
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if (i % 2)
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rawir.pulse = false;
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else
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rawir.pulse = true;
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rawir.duration = US_TO_NS(single_len);
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/* cap the value to IR_MAX_DURATION */
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rawir.duration = (rawir.duration > IR_MAX_DURATION) ?
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IR_MAX_DURATION : rawir.duration;
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dev_dbg(dev, "storing %s with duration %d (i: %d)\n",
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rawir.pulse ? "pulse" : "space", rawir.duration, i);
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ir_raw_event_store_with_filter(rr3->rc, &rawir);
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}
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/* add a trailing space */
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rawir.pulse = false;
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rawir.timeout = true;
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rawir.duration = rr3->rc->timeout;
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dev_dbg(dev, "storing trailing timeout with duration %d\n",
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rawir.duration);
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ir_raw_event_store_with_filter(rr3->rc, &rawir);
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dev_dbg(dev, "calling ir_raw_event_handle\n");
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ir_raw_event_handle(rr3->rc);
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}
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/* Util fn to send rr3 cmds */
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static int redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
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{
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struct usb_device *udev;
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u8 *data;
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int res;
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data = kzalloc(sizeof(u8), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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udev = rr3->udev;
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res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x0000, 0x0000, data, sizeof(u8), HZ * 10);
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if (res < 0) {
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dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
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__func__, res, *data);
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res = -EIO;
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} else
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res = data[0];
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kfree(data);
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return res;
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}
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/* Enables the long range detector and starts async receive */
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static int redrat3_enable_detector(struct redrat3_dev *rr3)
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{
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struct device *dev = rr3->dev;
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u8 ret;
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ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
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if (ret != 0)
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dev_dbg(dev, "%s: unexpected ret of %d\n",
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__func__, ret);
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ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
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if (ret != 1) {
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dev_err(dev, "%s: detector status: %d, should be 1\n",
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__func__, ret);
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return -EIO;
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}
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ret = usb_submit_urb(rr3->narrow_urb, GFP_KERNEL);
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if (ret) {
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dev_err(rr3->dev, "narrow band urb failed: %d", ret);
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return ret;
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}
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ret = usb_submit_urb(rr3->wide_urb, GFP_KERNEL);
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if (ret)
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dev_err(rr3->dev, "wide band urb failed: %d", ret);
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return ret;
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}
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static inline void redrat3_delete(struct redrat3_dev *rr3,
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struct usb_device *udev)
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{
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usb_kill_urb(rr3->narrow_urb);
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usb_kill_urb(rr3->wide_urb);
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usb_kill_urb(rr3->flash_urb);
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usb_kill_urb(rr3->learn_urb);
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usb_free_urb(rr3->narrow_urb);
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usb_free_urb(rr3->wide_urb);
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usb_free_urb(rr3->flash_urb);
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usb_free_urb(rr3->learn_urb);
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usb_free_coherent(udev, le16_to_cpu(rr3->ep_narrow->wMaxPacketSize),
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rr3->bulk_in_buf, rr3->dma_in);
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kfree(rr3);
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}
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static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
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{
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__be32 *tmp;
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u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
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int len, ret, pipe;
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len = sizeof(*tmp);
|
|
tmp = kzalloc(len, GFP_KERNEL);
|
|
if (!tmp)
|
|
return timeout;
|
|
|
|
pipe = usb_rcvctrlpipe(rr3->udev, 0);
|
|
ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
|
RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
|
|
if (ret != len)
|
|
dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
|
|
else {
|
|
timeout = redrat3_len_to_us(be32_to_cpup(tmp));
|
|
|
|
dev_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
|
|
}
|
|
|
|
kfree(tmp);
|
|
|
|
return timeout;
|
|
}
|
|
|
|
static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutns)
|
|
{
|
|
struct redrat3_dev *rr3 = rc_dev->priv;
|
|
struct usb_device *udev = rr3->udev;
|
|
struct device *dev = rr3->dev;
|
|
__be32 *timeout;
|
|
int ret;
|
|
|
|
timeout = kmalloc(sizeof(*timeout), GFP_KERNEL);
|
|
if (!timeout)
|
|
return -ENOMEM;
|
|
|
|
*timeout = cpu_to_be32(redrat3_us_to_len(timeoutns / 1000));
|
|
ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
|
|
RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout),
|
|
HZ * 25);
|
|
dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n",
|
|
be32_to_cpu(*timeout), ret);
|
|
|
|
if (ret == sizeof(*timeout))
|
|
ret = 0;
|
|
else if (ret >= 0)
|
|
ret = -EIO;
|
|
|
|
kfree(timeout);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void redrat3_reset(struct redrat3_dev *rr3)
|
|
{
|
|
struct usb_device *udev = rr3->udev;
|
|
struct device *dev = rr3->dev;
|
|
int rc, rxpipe, txpipe;
|
|
u8 *val;
|
|
size_t const len = sizeof(*val);
|
|
|
|
rxpipe = usb_rcvctrlpipe(udev, 0);
|
|
txpipe = usb_sndctrlpipe(udev, 0);
|
|
|
|
val = kmalloc(len, GFP_KERNEL);
|
|
if (!val)
|
|
return;
|
|
|
|
*val = 0x01;
|
|
rc = usb_control_msg(udev, rxpipe, RR3_RESET,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
|
RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
|
|
dev_dbg(dev, "reset returned 0x%02x\n", rc);
|
|
|
|
*val = length_fuzz;
|
|
rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
|
|
RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
|
|
dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
|
|
|
|
*val = (65536 - (minimum_pause * 2000)) / 256;
|
|
rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
|
|
RR3_IR_IO_MIN_PAUSE, 0, val, len, HZ * 25);
|
|
dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *val, rc);
|
|
|
|
*val = periods_measure_carrier;
|
|
rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
|
|
RR3_IR_IO_PERIODS_MF, 0, val, len, HZ * 25);
|
|
dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x", *val,
|
|
rc);
|
|
|
|
*val = RR3_DRIVER_MAXLENS;
|
|
rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
|
|
RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
|
|
dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
|
|
|
|
kfree(val);
|
|
}
|
|
|
|
static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
|
|
{
|
|
int rc;
|
|
char *buffer;
|
|
|
|
buffer = kcalloc(RR3_FW_VERSION_LEN + 1, sizeof(*buffer), GFP_KERNEL);
|
|
if (!buffer)
|
|
return;
|
|
|
|
rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
|
|
RR3_FW_VERSION,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
|
0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
|
|
|
|
if (rc >= 0)
|
|
dev_info(rr3->dev, "Firmware rev: %s", buffer);
|
|
else
|
|
dev_err(rr3->dev, "Problem fetching firmware ID\n");
|
|
|
|
kfree(buffer);
|
|
}
|
|
|
|
static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len)
|
|
{
|
|
struct redrat3_header *header = rr3->bulk_in_buf;
|
|
unsigned pktlen, pkttype;
|
|
|
|
/* grab the Length and type of transfer */
|
|
pktlen = be16_to_cpu(header->length);
|
|
pkttype = be16_to_cpu(header->transfer_type);
|
|
|
|
if (pktlen > sizeof(rr3->irdata)) {
|
|
dev_warn(rr3->dev, "packet length %u too large\n", pktlen);
|
|
return;
|
|
}
|
|
|
|
switch (pkttype) {
|
|
case RR3_ERROR:
|
|
if (len >= sizeof(struct redrat3_error)) {
|
|
struct redrat3_error *error = rr3->bulk_in_buf;
|
|
unsigned fw_error = be16_to_cpu(error->fw_error);
|
|
redrat3_dump_fw_error(rr3, fw_error);
|
|
}
|
|
break;
|
|
|
|
case RR3_MOD_SIGNAL_IN:
|
|
memcpy(&rr3->irdata, rr3->bulk_in_buf, len);
|
|
rr3->bytes_read = len;
|
|
dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
|
|
rr3->bytes_read, pktlen);
|
|
break;
|
|
|
|
default:
|
|
dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n",
|
|
pkttype, len, pktlen);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len)
|
|
{
|
|
void *irdata = &rr3->irdata;
|
|
|
|
if (len + rr3->bytes_read > sizeof(rr3->irdata)) {
|
|
dev_warn(rr3->dev, "too much data for packet\n");
|
|
rr3->bytes_read = 0;
|
|
return;
|
|
}
|
|
|
|
memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len);
|
|
|
|
rr3->bytes_read += len;
|
|
dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read,
|
|
be16_to_cpu(rr3->irdata.header.length));
|
|
}
|
|
|
|
/* gather IR data from incoming urb, process it when we have enough */
|
|
static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len)
|
|
{
|
|
struct device *dev = rr3->dev;
|
|
unsigned pkttype;
|
|
int ret = 0;
|
|
|
|
if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) {
|
|
redrat3_read_packet_start(rr3, len);
|
|
} else if (rr3->bytes_read != 0) {
|
|
redrat3_read_packet_continue(rr3, len);
|
|
} else if (rr3->bytes_read == 0) {
|
|
dev_err(dev, "error: no packet data read\n");
|
|
ret = -ENODATA;
|
|
goto out;
|
|
}
|
|
|
|
if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) +
|
|
sizeof(struct redrat3_header))
|
|
/* we're still accumulating data */
|
|
return 0;
|
|
|
|
/* if we get here, we've got IR data to decode */
|
|
pkttype = be16_to_cpu(rr3->irdata.header.transfer_type);
|
|
if (pkttype == RR3_MOD_SIGNAL_IN)
|
|
redrat3_process_ir_data(rr3);
|
|
else
|
|
dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n",
|
|
pkttype);
|
|
|
|
out:
|
|
rr3->bytes_read = 0;
|
|
return ret;
|
|
}
|
|
|
|
/* callback function from USB when async USB request has completed */
|
|
static void redrat3_handle_async(struct urb *urb)
|
|
{
|
|
struct redrat3_dev *rr3 = urb->context;
|
|
int ret;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
ret = redrat3_get_ir_data(rr3, urb->actual_length);
|
|
if (!ret && rr3->wideband && !rr3->learn_urb->hcpriv) {
|
|
ret = usb_submit_urb(rr3->learn_urb, GFP_ATOMIC);
|
|
if (ret)
|
|
dev_err(rr3->dev, "Failed to submit learning urb: %d",
|
|
ret);
|
|
}
|
|
|
|
if (!ret) {
|
|
/* no error, prepare to read more */
|
|
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (ret)
|
|
dev_err(rr3->dev, "Failed to resubmit urb: %d",
|
|
ret);
|
|
}
|
|
break;
|
|
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
usb_unlink_urb(urb);
|
|
return;
|
|
|
|
case -EPIPE:
|
|
default:
|
|
dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
|
|
rr3->bytes_read = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static u16 mod_freq_to_val(unsigned int mod_freq)
|
|
{
|
|
int mult = 6000000;
|
|
|
|
/* Clk used in mod. freq. generation is CLK24/4. */
|
|
return 65536 - (mult / mod_freq);
|
|
}
|
|
|
|
static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
|
|
{
|
|
struct redrat3_dev *rr3 = rcdev->priv;
|
|
struct device *dev = rr3->dev;
|
|
|
|
dev_dbg(dev, "Setting modulation frequency to %u", carrier);
|
|
if (carrier == 0)
|
|
return -EINVAL;
|
|
|
|
rr3->carrier = carrier;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
|
|
unsigned count)
|
|
{
|
|
struct redrat3_dev *rr3 = rcdev->priv;
|
|
struct device *dev = rr3->dev;
|
|
struct redrat3_irdata *irdata = NULL;
|
|
int ret, ret_len;
|
|
int lencheck, cur_sample_len, pipe;
|
|
int *sample_lens = NULL;
|
|
u8 curlencheck = 0;
|
|
unsigned i, sendbuf_len;
|
|
|
|
if (rr3->transmitting) {
|
|
dev_warn(dev, "%s: transmitter already in use\n", __func__);
|
|
return -EAGAIN;
|
|
}
|
|
|
|
if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN)
|
|
return -EINVAL;
|
|
|
|
/* rr3 will disable rc detector on transmit */
|
|
rr3->transmitting = true;
|
|
|
|
sample_lens = kcalloc(RR3_DRIVER_MAXLENS,
|
|
sizeof(*sample_lens),
|
|
GFP_KERNEL);
|
|
if (!sample_lens)
|
|
return -ENOMEM;
|
|
|
|
irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
|
|
if (!irdata) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < count; i++) {
|
|
cur_sample_len = redrat3_us_to_len(txbuf[i]);
|
|
if (cur_sample_len > 0xffff) {
|
|
dev_warn(dev, "transmit period of %uus truncated to %uus\n",
|
|
txbuf[i], redrat3_len_to_us(0xffff));
|
|
cur_sample_len = 0xffff;
|
|
}
|
|
for (lencheck = 0; lencheck < curlencheck; lencheck++) {
|
|
if (sample_lens[lencheck] == cur_sample_len)
|
|
break;
|
|
}
|
|
if (lencheck == curlencheck) {
|
|
dev_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
|
|
i, txbuf[i], curlencheck, cur_sample_len);
|
|
if (curlencheck < RR3_DRIVER_MAXLENS) {
|
|
/* now convert the value to a proper
|
|
* rr3 value.. */
|
|
sample_lens[curlencheck] = cur_sample_len;
|
|
put_unaligned_be16(cur_sample_len,
|
|
&irdata->lens[curlencheck]);
|
|
curlencheck++;
|
|
} else {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
irdata->sigdata[i] = lencheck;
|
|
}
|
|
|
|
irdata->sigdata[count] = RR3_END_OF_SIGNAL;
|
|
irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;
|
|
|
|
sendbuf_len = offsetof(struct redrat3_irdata,
|
|
sigdata[count + RR3_TX_TRAILER_LEN]);
|
|
/* fill in our packet header */
|
|
irdata->header.length = cpu_to_be16(sendbuf_len -
|
|
sizeof(struct redrat3_header));
|
|
irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);
|
|
irdata->pause = cpu_to_be32(redrat3_len_to_us(100));
|
|
irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));
|
|
irdata->no_lengths = curlencheck;
|
|
irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);
|
|
|
|
pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
|
|
ret = usb_bulk_msg(rr3->udev, pipe, irdata,
|
|
sendbuf_len, &ret_len, 10 * HZ);
|
|
dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
|
|
|
|
/* now tell the hardware to transmit what we sent it */
|
|
pipe = usb_rcvctrlpipe(rr3->udev, 0);
|
|
ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
|
0, 0, irdata, 2, HZ * 10);
|
|
|
|
if (ret < 0)
|
|
dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
|
|
else
|
|
ret = count;
|
|
|
|
out:
|
|
kfree(irdata);
|
|
kfree(sample_lens);
|
|
|
|
rr3->transmitting = false;
|
|
/* rr3 re-enables rc detector because it was enabled before */
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void redrat3_brightness_set(struct led_classdev *led_dev, enum
|
|
led_brightness brightness)
|
|
{
|
|
struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev,
|
|
led);
|
|
|
|
if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) {
|
|
int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC);
|
|
if (ret != 0) {
|
|
dev_dbg(rr3->dev, "%s: unexpected ret of %d\n",
|
|
__func__, ret);
|
|
atomic_set(&rr3->flash, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int redrat3_wideband_receiver(struct rc_dev *rcdev, int enable)
|
|
{
|
|
struct redrat3_dev *rr3 = rcdev->priv;
|
|
int ret = 0;
|
|
|
|
rr3->wideband = enable != 0;
|
|
|
|
if (enable) {
|
|
ret = usb_submit_urb(rr3->learn_urb, GFP_KERNEL);
|
|
if (ret)
|
|
dev_err(rr3->dev, "Failed to submit learning urb: %d",
|
|
ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void redrat3_learn_complete(struct urb *urb)
|
|
{
|
|
struct redrat3_dev *rr3 = urb->context;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
usb_unlink_urb(urb);
|
|
return;
|
|
case -EPIPE:
|
|
default:
|
|
dev_err(rr3->dev, "Error: learn urb status = %d", urb->status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void redrat3_led_complete(struct urb *urb)
|
|
{
|
|
struct redrat3_dev *rr3 = urb->context;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
usb_unlink_urb(urb);
|
|
return;
|
|
case -EPIPE:
|
|
default:
|
|
dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status);
|
|
break;
|
|
}
|
|
|
|
rr3->led.brightness = LED_OFF;
|
|
atomic_dec(&rr3->flash);
|
|
}
|
|
|
|
static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
|
|
{
|
|
struct device *dev = rr3->dev;
|
|
struct rc_dev *rc;
|
|
int ret;
|
|
u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
|
|
|
|
rc = rc_allocate_device(RC_DRIVER_IR_RAW);
|
|
if (!rc)
|
|
return NULL;
|
|
|
|
snprintf(rr3->name, sizeof(rr3->name),
|
|
"RedRat3%s Infrared Remote Transceiver",
|
|
prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "");
|
|
|
|
usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
|
|
|
|
rc->input_name = rr3->name;
|
|
rc->input_phys = rr3->phys;
|
|
usb_to_input_id(rr3->udev, &rc->input_id);
|
|
rc->dev.parent = dev;
|
|
rc->priv = rr3;
|
|
rc->allowed_protocols = RC_BIT_ALL_IR_DECODER;
|
|
rc->min_timeout = MS_TO_NS(RR3_RX_MIN_TIMEOUT);
|
|
rc->max_timeout = MS_TO_NS(RR3_RX_MAX_TIMEOUT);
|
|
rc->timeout = US_TO_NS(redrat3_get_timeout(rr3));
|
|
rc->s_timeout = redrat3_set_timeout;
|
|
rc->tx_ir = redrat3_transmit_ir;
|
|
rc->s_tx_carrier = redrat3_set_tx_carrier;
|
|
rc->s_carrier_report = redrat3_wideband_receiver;
|
|
rc->driver_name = DRIVER_NAME;
|
|
rc->rx_resolution = US_TO_NS(2);
|
|
rc->map_name = RC_MAP_HAUPPAUGE;
|
|
|
|
ret = rc_register_device(rc);
|
|
if (ret < 0) {
|
|
dev_err(dev, "remote dev registration failed\n");
|
|
goto out;
|
|
}
|
|
|
|
return rc;
|
|
|
|
out:
|
|
rc_free_device(rc);
|
|
return NULL;
|
|
}
|
|
|
|
static int redrat3_dev_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(intf);
|
|
struct device *dev = &intf->dev;
|
|
struct usb_host_interface *uhi;
|
|
struct redrat3_dev *rr3;
|
|
struct usb_endpoint_descriptor *ep;
|
|
struct usb_endpoint_descriptor *ep_narrow = NULL;
|
|
struct usb_endpoint_descriptor *ep_wide = NULL;
|
|
struct usb_endpoint_descriptor *ep_out = NULL;
|
|
u8 addr, attrs;
|
|
int pipe, i;
|
|
int retval = -ENOMEM;
|
|
|
|
uhi = intf->cur_altsetting;
|
|
|
|
/* find our bulk-in and bulk-out endpoints */
|
|
for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
|
|
ep = &uhi->endpoint[i].desc;
|
|
addr = ep->bEndpointAddress;
|
|
attrs = ep->bmAttributes;
|
|
|
|
if (((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
|
|
((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
|
|
USB_ENDPOINT_XFER_BULK)) {
|
|
dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
|
|
ep->bEndpointAddress);
|
|
/* data comes in on 0x82, 0x81 is for learning */
|
|
if (ep->bEndpointAddress == RR3_NARROW_IN_EP_ADDR)
|
|
ep_narrow = ep;
|
|
if (ep->bEndpointAddress == RR3_WIDE_IN_EP_ADDR)
|
|
ep_wide = ep;
|
|
}
|
|
|
|
if ((ep_out == NULL) &&
|
|
((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
|
|
((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
|
|
USB_ENDPOINT_XFER_BULK)) {
|
|
dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
|
|
ep->bEndpointAddress);
|
|
ep_out = ep;
|
|
}
|
|
}
|
|
|
|
if (!ep_narrow || !ep_out || !ep_wide) {
|
|
dev_err(dev, "Couldn't find all endpoints\n");
|
|
retval = -ENODEV;
|
|
goto no_endpoints;
|
|
}
|
|
|
|
/* allocate memory for our device state and initialize it */
|
|
rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
|
|
if (!rr3)
|
|
goto no_endpoints;
|
|
|
|
rr3->dev = &intf->dev;
|
|
rr3->ep_narrow = ep_narrow;
|
|
rr3->ep_out = ep_out;
|
|
rr3->udev = udev;
|
|
|
|
/* set up bulk-in endpoint */
|
|
rr3->narrow_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!rr3->narrow_urb)
|
|
goto redrat_free;
|
|
|
|
rr3->wide_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!rr3->wide_urb)
|
|
goto redrat_free;
|
|
|
|
rr3->bulk_in_buf = usb_alloc_coherent(udev,
|
|
le16_to_cpu(ep_narrow->wMaxPacketSize),
|
|
GFP_KERNEL, &rr3->dma_in);
|
|
if (!rr3->bulk_in_buf)
|
|
goto redrat_free;
|
|
|
|
pipe = usb_rcvbulkpipe(udev, ep_narrow->bEndpointAddress);
|
|
usb_fill_bulk_urb(rr3->narrow_urb, udev, pipe, rr3->bulk_in_buf,
|
|
le16_to_cpu(ep_narrow->wMaxPacketSize),
|
|
redrat3_handle_async, rr3);
|
|
rr3->narrow_urb->transfer_dma = rr3->dma_in;
|
|
rr3->narrow_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
|
pipe = usb_rcvbulkpipe(udev, ep_wide->bEndpointAddress);
|
|
usb_fill_bulk_urb(rr3->wide_urb, udev, pipe, rr3->bulk_in_buf,
|
|
le16_to_cpu(ep_narrow->wMaxPacketSize),
|
|
redrat3_handle_async, rr3);
|
|
rr3->wide_urb->transfer_dma = rr3->dma_in;
|
|
rr3->wide_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
|
redrat3_reset(rr3);
|
|
redrat3_get_firmware_rev(rr3);
|
|
|
|
/* default.. will get overridden by any sends with a freq defined */
|
|
rr3->carrier = 38000;
|
|
|
|
atomic_set(&rr3->flash, 0);
|
|
rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!rr3->flash_urb)
|
|
goto redrat_free;
|
|
|
|
/* learn urb */
|
|
rr3->learn_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!rr3->learn_urb)
|
|
goto redrat_free;
|
|
|
|
/* setup packet is 'c0 b2 0000 0000 0001' */
|
|
rr3->learn_control.bRequestType = 0xc0;
|
|
rr3->learn_control.bRequest = RR3_MODSIG_CAPTURE;
|
|
rr3->learn_control.wLength = cpu_to_le16(1);
|
|
|
|
usb_fill_control_urb(rr3->learn_urb, udev, usb_rcvctrlpipe(udev, 0),
|
|
(unsigned char *)&rr3->learn_control,
|
|
&rr3->learn_buf, sizeof(rr3->learn_buf),
|
|
redrat3_learn_complete, rr3);
|
|
|
|
/* setup packet is 'c0 b9 0000 0000 0001' */
|
|
rr3->flash_control.bRequestType = 0xc0;
|
|
rr3->flash_control.bRequest = RR3_BLINK_LED;
|
|
rr3->flash_control.wLength = cpu_to_le16(1);
|
|
|
|
usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
|
|
(unsigned char *)&rr3->flash_control,
|
|
&rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
|
|
redrat3_led_complete, rr3);
|
|
|
|
/* led control */
|
|
rr3->led.name = "redrat3:red:feedback";
|
|
rr3->led.default_trigger = "rc-feedback";
|
|
rr3->led.brightness_set = redrat3_brightness_set;
|
|
retval = led_classdev_register(&intf->dev, &rr3->led);
|
|
if (retval)
|
|
goto redrat_free;
|
|
|
|
rr3->rc = redrat3_init_rc_dev(rr3);
|
|
if (!rr3->rc) {
|
|
retval = -ENOMEM;
|
|
goto led_free;
|
|
}
|
|
|
|
/* might be all we need to do? */
|
|
retval = redrat3_enable_detector(rr3);
|
|
if (retval < 0)
|
|
goto led_free;
|
|
|
|
/* we can register the device now, as it is ready */
|
|
usb_set_intfdata(intf, rr3);
|
|
|
|
return 0;
|
|
|
|
led_free:
|
|
led_classdev_unregister(&rr3->led);
|
|
redrat_free:
|
|
redrat3_delete(rr3, rr3->udev);
|
|
|
|
no_endpoints:
|
|
return retval;
|
|
}
|
|
|
|
static void redrat3_dev_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(intf);
|
|
struct redrat3_dev *rr3 = usb_get_intfdata(intf);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
rc_unregister_device(rr3->rc);
|
|
led_classdev_unregister(&rr3->led);
|
|
redrat3_delete(rr3, udev);
|
|
}
|
|
|
|
static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct redrat3_dev *rr3 = usb_get_intfdata(intf);
|
|
|
|
led_classdev_suspend(&rr3->led);
|
|
usb_kill_urb(rr3->narrow_urb);
|
|
usb_kill_urb(rr3->wide_urb);
|
|
usb_kill_urb(rr3->flash_urb);
|
|
return 0;
|
|
}
|
|
|
|
static int redrat3_dev_resume(struct usb_interface *intf)
|
|
{
|
|
struct redrat3_dev *rr3 = usb_get_intfdata(intf);
|
|
|
|
if (usb_submit_urb(rr3->narrow_urb, GFP_ATOMIC))
|
|
return -EIO;
|
|
if (usb_submit_urb(rr3->wide_urb, GFP_ATOMIC))
|
|
return -EIO;
|
|
led_classdev_resume(&rr3->led);
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_driver redrat3_dev_driver = {
|
|
.name = DRIVER_NAME,
|
|
.probe = redrat3_dev_probe,
|
|
.disconnect = redrat3_dev_disconnect,
|
|
.suspend = redrat3_dev_suspend,
|
|
.resume = redrat3_dev_resume,
|
|
.reset_resume = redrat3_dev_resume,
|
|
.id_table = redrat3_dev_table
|
|
};
|
|
|
|
module_usb_driver(redrat3_dev_driver);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_AUTHOR(DRIVER_AUTHOR2);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(usb, redrat3_dev_table);
|