From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/media/usb/gspca/stv06xx/stv06xx.c | 639 +++++++++++++++++++++++ 1 file changed, 639 insertions(+) create mode 100644 kernel/drivers/media/usb/gspca/stv06xx/stv06xx.c (limited to 'kernel/drivers/media/usb/gspca/stv06xx/stv06xx.c') diff --git a/kernel/drivers/media/usb/gspca/stv06xx/stv06xx.c b/kernel/drivers/media/usb/gspca/stv06xx/stv06xx.c new file mode 100644 index 000000000..6ac93d8db --- /dev/null +++ b/kernel/drivers/media/usb/gspca/stv06xx/stv06xx.c @@ -0,0 +1,639 @@ +/* + * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher + * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland + * Copyright (c) 2002, 2003 Tuukka Toivonen + * Copyright (c) 2008 Erik Andrén + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * P/N 861037: Sensor HDCS1000 ASIC STV0600 + * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600 + * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express + * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam + * P/N 861075-0040: Sensor HDCS1000 ASIC + * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB + * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include "stv06xx_sensor.h" + +MODULE_AUTHOR("Erik Andrén"); +MODULE_DESCRIPTION("STV06XX USB Camera Driver"); +MODULE_LICENSE("GPL"); + +static bool dump_bridge; +static bool dump_sensor; + +int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data) +{ + int err; + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + u8 len = (i2c_data > 0xff) ? 2 : 1; + + buf[0] = i2c_data & 0xff; + buf[1] = (i2c_data >> 8) & 0xff; + + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + 0x04, 0x40, address, 0, buf, len, + STV06XX_URB_MSG_TIMEOUT); + + PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d", + i2c_data, address, err); + + return (err < 0) ? err : 0; +} + +int stv06xx_read_bridge(struct sd *sd, u16 address, u8 *i2c_data) +{ + int err; + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), + 0x04, 0xc0, address, 0, buf, 1, + STV06XX_URB_MSG_TIMEOUT); + + *i2c_data = buf[0]; + + PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d", + *i2c_data, address, err); + + return (err < 0) ? err : 0; +} + +/* Wraps the normal write sensor bytes / words functions for writing a + single value */ +int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value) +{ + if (sd->sensor->i2c_len == 2) { + u16 data[2] = { address, value }; + return stv06xx_write_sensor_words(sd, data, 1); + } else { + u8 data[2] = { address, value }; + return stv06xx_write_sensor_bytes(sd, data, 1); + } +} + +static int stv06xx_write_sensor_finish(struct sd *sd) +{ + int err = 0; + + if (sd->bridge == BRIDGE_STV610) { + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + buf[0] = 0; + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + 0x04, 0x40, 0x1704, 0, buf, 1, + STV06XX_URB_MSG_TIMEOUT); + } + + return (err < 0) ? err : 0; +} + +int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len) +{ + int err, i, j; + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len); + for (i = 0; i < len;) { + /* Build the command buffer */ + memset(buf, 0, I2C_BUFFER_LENGTH); + for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) { + buf[j] = data[2*i]; + buf[0x10 + j] = data[2*i+1]; + PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x", + data[2*i+1], data[2*i]); + } + buf[0x20] = sd->sensor->i2c_addr; + buf[0x21] = j - 1; /* Number of commands to send - 1 */ + buf[0x22] = I2C_WRITE_CMD; + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + 0x04, 0x40, 0x0400, 0, buf, + I2C_BUFFER_LENGTH, + STV06XX_URB_MSG_TIMEOUT); + if (err < 0) + return err; + } + return stv06xx_write_sensor_finish(sd); +} + +int stv06xx_write_sensor_words(struct sd *sd, const u16 *data, u8 len) +{ + int err, i, j; + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len); + + for (i = 0; i < len;) { + /* Build the command buffer */ + memset(buf, 0, I2C_BUFFER_LENGTH); + for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) { + buf[j] = data[2*i]; + buf[0x10 + j * 2] = data[2*i+1]; + buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8; + PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x", + data[2*i+1], data[2*i]); + } + buf[0x20] = sd->sensor->i2c_addr; + buf[0x21] = j - 1; /* Number of commands to send - 1 */ + buf[0x22] = I2C_WRITE_CMD; + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + 0x04, 0x40, 0x0400, 0, buf, + I2C_BUFFER_LENGTH, + STV06XX_URB_MSG_TIMEOUT); + if (err < 0) + return err; + } + return stv06xx_write_sensor_finish(sd); +} + +int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value) +{ + int err; + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush); + if (err < 0) + return err; + + /* Clear mem */ + memset(buf, 0, I2C_BUFFER_LENGTH); + + buf[0] = address; + buf[0x20] = sd->sensor->i2c_addr; + buf[0x21] = 0; + + /* Read I2C register */ + buf[0x22] = I2C_READ_CMD; + + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + 0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH, + STV06XX_URB_MSG_TIMEOUT); + if (err < 0) { + pr_err("I2C: Read error writing address: %d\n", err); + return err; + } + + err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), + 0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len, + STV06XX_URB_MSG_TIMEOUT); + if (sd->sensor->i2c_len == 2) + *value = buf[0] | (buf[1] << 8); + else + *value = buf[0]; + + PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d", + *value, address, err); + + return (err < 0) ? err : 0; +} + +/* Dumps all bridge registers */ +static void stv06xx_dump_bridge(struct sd *sd) +{ + int i; + u8 data, buf; + + pr_info("Dumping all stv06xx bridge registers\n"); + for (i = 0x1400; i < 0x160f; i++) { + stv06xx_read_bridge(sd, i, &data); + + pr_info("Read 0x%x from address 0x%x\n", data, i); + } + + pr_info("Testing stv06xx bridge registers for writability\n"); + for (i = 0x1400; i < 0x160f; i++) { + stv06xx_read_bridge(sd, i, &data); + buf = data; + + stv06xx_write_bridge(sd, i, 0xff); + stv06xx_read_bridge(sd, i, &data); + if (data == 0xff) + pr_info("Register 0x%x is read/write\n", i); + else if (data != buf) + pr_info("Register 0x%x is read/write, but only partially\n", + i); + else + pr_info("Register 0x%x is read-only\n", i); + + stv06xx_write_bridge(sd, i, buf); + } +} + +/* this function is called at probe and resume time */ +static int stv06xx_init(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + int err; + + PDEBUG(D_PROBE, "Initializing camera"); + + /* Let the usb init settle for a bit + before performing the initialization */ + msleep(250); + + err = sd->sensor->init(sd); + + if (dump_sensor && sd->sensor->dump) + sd->sensor->dump(sd); + + return (err < 0) ? err : 0; +} + +/* this function is called at probe time */ +static int stv06xx_init_controls(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_PROBE, "Initializing controls"); + + gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler; + return sd->sensor->init_controls(sd); +} + +/* Start the camera */ +static int stv06xx_start(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + struct usb_host_interface *alt; + struct usb_interface *intf; + int err, packet_size; + + intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface); + alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt); + if (!alt) { + PERR("Couldn't get altsetting"); + return -EIO; + } + + packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); + err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size); + if (err < 0) + return err; + + /* Prepare the sensor for start */ + err = sd->sensor->start(sd); + if (err < 0) + goto out; + + /* Start isochronous streaming */ + err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1); + +out: + if (err < 0) + PDEBUG(D_STREAM, "Starting stream failed"); + else + PDEBUG(D_STREAM, "Started streaming"); + + return (err < 0) ? err : 0; +} + +static int stv06xx_isoc_init(struct gspca_dev *gspca_dev) +{ + struct usb_host_interface *alt; + struct sd *sd = (struct sd *) gspca_dev; + + /* Start isoc bandwidth "negotiation" at max isoc bandwidth */ + alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1]; + alt->endpoint[0].desc.wMaxPacketSize = + cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]); + + return 0; +} + +static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev) +{ + int ret, packet_size, min_packet_size; + struct usb_host_interface *alt; + struct sd *sd = (struct sd *) gspca_dev; + + alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1]; + packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); + min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode]; + if (packet_size <= min_packet_size) + return -EIO; + + packet_size -= 100; + if (packet_size < min_packet_size) + packet_size = min_packet_size; + alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size); + + ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1); + if (ret < 0) + PERR("set alt 1 err %d", ret); + + return ret; +} + +static void stv06xx_stopN(struct gspca_dev *gspca_dev) +{ + int err; + struct sd *sd = (struct sd *) gspca_dev; + + /* stop ISO-streaming */ + err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0); + if (err < 0) + goto out; + + err = sd->sensor->stop(sd); + +out: + if (err < 0) + PDEBUG(D_STREAM, "Failed to stop stream"); + else + PDEBUG(D_STREAM, "Stopped streaming"); +} + +/* + * Analyse an USB packet of the data stream and store it appropriately. + * Each packet contains an integral number of chunks. Each chunk has + * 2-bytes identification, followed by 2-bytes that describe the chunk + * length. Known/guessed chunk identifications are: + * 8001/8005/C001/C005 - Begin new frame + * 8002/8006/C002/C006 - End frame + * 0200/4200 - Contains actual image data, bayer or compressed + * 0005 - 11 bytes of unknown data + * 0100 - 2 bytes of unknown data + * The 0005 and 0100 chunks seem to appear only in compressed stream. + */ +static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev, + u8 *data, /* isoc packet */ + int len) /* iso packet length */ +{ + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_PACK, "Packet of length %d arrived", len); + + /* A packet may contain several frames + loop until the whole packet is reached */ + while (len) { + int id, chunk_len; + + if (len < 4) { + PDEBUG(D_PACK, "Packet is smaller than 4 bytes"); + return; + } + + /* Capture the id */ + id = (data[0] << 8) | data[1]; + + /* Capture the chunk length */ + chunk_len = (data[2] << 8) | data[3]; + PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len); + + data += 4; + len -= 4; + + if (len < chunk_len) { + PERR("URB packet length is smaller" + " than the specified chunk length"); + gspca_dev->last_packet_type = DISCARD_PACKET; + return; + } + + /* First byte seem to be 02=data 2nd byte is unknown??? */ + if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200) + goto frame_data; + + switch (id) { + case 0x0200: + case 0x4200: +frame_data: + PDEBUG(D_PACK, "Frame data packet detected"); + + if (sd->to_skip) { + int skip = (sd->to_skip < chunk_len) ? + sd->to_skip : chunk_len; + data += skip; + len -= skip; + chunk_len -= skip; + sd->to_skip -= skip; + } + + gspca_frame_add(gspca_dev, INTER_PACKET, + data, chunk_len); + break; + + case 0x8001: + case 0x8005: + case 0xc001: + case 0xc005: + PDEBUG(D_PACK, "Starting new frame"); + + /* Create a new frame, chunk length should be zero */ + gspca_frame_add(gspca_dev, FIRST_PACKET, + NULL, 0); + + if (sd->bridge == BRIDGE_ST6422) + sd->to_skip = gspca_dev->pixfmt.width * 4; + + if (chunk_len) + PERR("Chunk length is " + "non-zero on a SOF"); + break; + + case 0x8002: + case 0x8006: + case 0xc002: + PDEBUG(D_PACK, "End of frame detected"); + + /* Complete the last frame (if any) */ + gspca_frame_add(gspca_dev, LAST_PACKET, + NULL, 0); + + if (chunk_len) + PERR("Chunk length is " + "non-zero on a EOF"); + break; + + case 0x0005: + PDEBUG(D_PACK, "Chunk 0x005 detected"); + /* Unknown chunk with 11 bytes of data, + occurs just before end of each frame + in compressed mode */ + break; + + case 0x0100: + PDEBUG(D_PACK, "Chunk 0x0100 detected"); + /* Unknown chunk with 2 bytes of data, + occurs 2-3 times per USB interrupt */ + break; + case 0x42ff: + PDEBUG(D_PACK, "Chunk 0x42ff detected"); + /* Special chunk seen sometimes on the ST6422 */ + break; + default: + PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id); + /* Unknown chunk */ + } + data += chunk_len; + len -= chunk_len; + } +} + +#if IS_ENABLED(CONFIG_INPUT) +static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, + u8 *data, /* interrupt packet data */ + int len) /* interrupt packet length */ +{ + int ret = -EINVAL; + + if (len == 1 && (data[0] == 0x80 || data[0] == 0x10)) { + input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1); + input_sync(gspca_dev->input_dev); + ret = 0; + } + + if (len == 1 && (data[0] == 0x88 || data[0] == 0x11)) { + input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); + input_sync(gspca_dev->input_dev); + ret = 0; + } + + return ret; +} +#endif + +static int stv06xx_config(struct gspca_dev *gspca_dev, + const struct usb_device_id *id); + +/* sub-driver description */ +static const struct sd_desc sd_desc = { + .name = MODULE_NAME, + .config = stv06xx_config, + .init = stv06xx_init, + .init_controls = stv06xx_init_controls, + .start = stv06xx_start, + .stopN = stv06xx_stopN, + .pkt_scan = stv06xx_pkt_scan, + .isoc_init = stv06xx_isoc_init, + .isoc_nego = stv06xx_isoc_nego, +#if IS_ENABLED(CONFIG_INPUT) + .int_pkt_scan = sd_int_pkt_scan, +#endif +}; + +/* This function is called at probe time */ +static int stv06xx_config(struct gspca_dev *gspca_dev, + const struct usb_device_id *id) +{ + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_PROBE, "Configuring camera"); + + sd->bridge = id->driver_info; + gspca_dev->sd_desc = &sd_desc; + + if (dump_bridge) + stv06xx_dump_bridge(sd); + + sd->sensor = &stv06xx_sensor_st6422; + if (!sd->sensor->probe(sd)) + return 0; + + sd->sensor = &stv06xx_sensor_vv6410; + if (!sd->sensor->probe(sd)) + return 0; + + sd->sensor = &stv06xx_sensor_hdcs1x00; + if (!sd->sensor->probe(sd)) + return 0; + + sd->sensor = &stv06xx_sensor_hdcs1020; + if (!sd->sensor->probe(sd)) + return 0; + + sd->sensor = &stv06xx_sensor_pb0100; + if (!sd->sensor->probe(sd)) + return 0; + + sd->sensor = NULL; + return -ENODEV; +} + + + +/* -- module initialisation -- */ +static const struct usb_device_id device_table[] = { + /* QuickCam Express */ + {USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 }, + /* LEGO cam / QuickCam Web */ + {USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 }, + /* Dexxa WebCam USB */ + {USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 }, + /* QuickCam Messenger */ + {USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 }, + /* QuickCam Communicate */ + {USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 }, + /* QuickCam Messenger (new) */ + {USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 }, + {} +}; +MODULE_DEVICE_TABLE(usb, device_table); + +/* -- device connect -- */ +static int sd_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), + THIS_MODULE); +} + +static void sd_disconnect(struct usb_interface *intf) +{ + struct gspca_dev *gspca_dev = usb_get_intfdata(intf); + struct sd *sd = (struct sd *) gspca_dev; + void *priv = sd->sensor_priv; + PDEBUG(D_PROBE, "Disconnecting the stv06xx device"); + + sd->sensor = NULL; + gspca_disconnect(intf); + kfree(priv); +} + +static struct usb_driver sd_driver = { + .name = MODULE_NAME, + .id_table = device_table, + .probe = sd_probe, + .disconnect = sd_disconnect, +#ifdef CONFIG_PM + .suspend = gspca_suspend, + .resume = gspca_resume, + .reset_resume = gspca_resume, +#endif +}; + +module_usb_driver(sd_driver); + +module_param(dump_bridge, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup"); + +module_param(dump_sensor, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup"); -- cgit 1.2.3-korg