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When firmware 1.20 was introduced, the dib0700 switched from a polling model using a USB control message, to the messages being delivered on a USB bulk pipe. The code I originally added would do a blocking read on the pipe with a 50ms timeout. Because the dvb-usb-remote code makes use of the global workqueue, this resulted in the global workqueue being blocked 50% of the time. Also, the synchronous urb_bulk_msg() call would burn excess CPU time (reflected as an abnormal increase in the system's load average when devices were connected). Rework the logic so that we now setup an asynchronous callback on the bulk pipe, so that we now only handle RC data when it arrives on the pipe. Note that we provide a stub function for the RC polling callback so that we can continue to leverage the shared code in dvb-usb-rc for the setting up of the input device. Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
70 lines
2.8 KiB
C
70 lines
2.8 KiB
C
/* Linux driver for devices based on the DiBcom DiB0700 USB bridge
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, version 2.
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*
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* Copyright (C) 2005-6 DiBcom, SA
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*/
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#ifndef _DIB0700_H_
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#define _DIB0700_H_
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#define DVB_USB_LOG_PREFIX "dib0700"
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#include "dvb-usb.h"
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#include "dib07x0.h"
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extern int dvb_usb_dib0700_debug;
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#define deb_info(args...) dprintk(dvb_usb_dib0700_debug,0x01,args)
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#define deb_fw(args...) dprintk(dvb_usb_dib0700_debug,0x02,args)
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#define deb_fwdata(args...) dprintk(dvb_usb_dib0700_debug,0x04,args)
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#define deb_data(args...) dprintk(dvb_usb_dib0700_debug,0x08,args)
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#define REQUEST_SET_USB_XFER_LEN 0x0 /* valid only for firmware version */
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/* higher than 1.21 */
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#define REQUEST_I2C_READ 0x2
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#define REQUEST_I2C_WRITE 0x3
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#define REQUEST_POLL_RC 0x4 /* deprecated in firmware v1.20 */
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#define REQUEST_JUMPRAM 0x8
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#define REQUEST_SET_CLOCK 0xB
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#define REQUEST_SET_GPIO 0xC
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#define REQUEST_ENABLE_VIDEO 0xF
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// 1 Byte: 4MSB(1 = enable streaming, 0 = disable streaming) 4LSB(Video Mode: 0 = MPEG2 188Bytes, 1 = Analog)
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// 2 Byte: MPEG2 mode: 4MSB(1 = Master Mode, 0 = Slave Mode) 4LSB(Channel 1 = bit0, Channel 2 = bit1)
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// 2 Byte: Analog mode: 4MSB(0 = 625 lines, 1 = 525 lines) 4LSB( " " )
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#define REQUEST_SET_RC 0x11
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#define REQUEST_NEW_I2C_READ 0x12
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#define REQUEST_NEW_I2C_WRITE 0x13
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#define REQUEST_GET_VERSION 0x15
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struct dib0700_state {
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u8 channel_state;
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u16 mt2060_if1[2];
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u8 rc_toggle;
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u8 rc_counter;
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u8 is_dib7000pc;
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u8 fw_use_new_i2c_api;
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u8 disable_streaming_master_mode;
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u32 fw_version;
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u32 nb_packet_buffer_size;
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};
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extern int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
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u32 *romversion, u32 *ramversion, u32 *fwtype);
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extern int dib0700_set_gpio(struct dvb_usb_device *, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val);
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extern int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3);
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extern int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen);
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extern int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw);
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extern int dib0700_rc_setup(struct dvb_usb_device *d);
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extern int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff);
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extern struct i2c_algorithm dib0700_i2c_algo;
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extern int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
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struct dvb_usb_device_description **desc, int *cold);
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extern int dib0700_device_count;
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extern int dvb_usb_dib0700_ir_proto;
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extern struct dvb_usb_device_properties dib0700_devices[];
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extern struct usb_device_id dib0700_usb_id_table[];
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#endif
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