Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Erik Andrén | 1805 | 88.92% | 17 | 44.74% |
Jean-François Moine | 66 | 3.25% | 7 | 18.42% |
Joe Perches | 57 | 2.81% | 3 | 7.89% |
Lukas Karas | 45 | 2.22% | 2 | 5.26% |
Hans de Goede | 31 | 1.53% | 2 | 5.26% |
Theodore Kilgore | 11 | 0.54% | 1 | 2.63% |
Hans Verkuil | 6 | 0.30% | 1 | 2.63% |
Rusty Russell | 2 | 0.10% | 1 | 2.63% |
Mauro Carvalho Chehab | 2 | 0.10% | 1 | 2.63% |
Thomas Gleixner | 2 | 0.10% | 1 | 2.63% |
Greg Kroah-Hartman | 2 | 0.10% | 1 | 2.63% |
Anand Gadiyar | 1 | 0.05% | 1 | 2.63% |
Total | 2030 | 38 |
// SPDX-License-Identifier: GPL-2.0-only /* * USB Driver for ALi m5602 based webcams * * Copyright (C) 2008 Erik Andrén * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project. * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br> * * Portions of code to USB interface and ALi driver software, * Copyright (c) 2006 Willem Duinker * v4l2 interface modeled after the V4L2 driver * for SN9C10x PC Camera Controllers */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "m5602_ov9650.h" #include "m5602_ov7660.h" #include "m5602_mt9m111.h" #include "m5602_po1030.h" #include "m5602_s5k83a.h" #include "m5602_s5k4aa.h" /* Kernel module parameters */ int force_sensor; static bool dump_bridge; bool dump_sensor; static const struct usb_device_id m5602_table[] = { {USB_DEVICE(0x0402, 0x5602)}, {} }; MODULE_DEVICE_TABLE(usb, m5602_table); /* A skeleton used for sending messages to the sensor */ static const unsigned char sensor_urb_skeleton[] = { 0x23, M5602_XB_GPIO_EN_H, 0x81, 0x06, 0x23, M5602_XB_MISC_CTRL, 0x81, 0x80, 0x13, M5602_XB_I2C_DEV_ADDR, 0x81, 0x00, 0x13, M5602_XB_I2C_REG_ADDR, 0x81, 0x00, 0x13, M5602_XB_I2C_DATA, 0x81, 0x00, 0x13, M5602_XB_I2C_CTRL, 0x81, 0x11 }; /* A skeleton used for sending messages to the m5602 bridge */ static const unsigned char bridge_urb_skeleton[] = { 0x13, 0x00, 0x81, 0x00 }; /* Reads a byte from the m5602 */ int m5602_read_bridge(struct sd *sd, const u8 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, 0x14, 0x8100 + address, buf, 1, M5602_URB_MSG_TIMEOUT); *i2c_data = buf[0]; gspca_dbg(gspca_dev, D_CONF, "Reading bridge register 0x%x containing 0x%x\n", address, *i2c_data); /* usb_control_msg(...) returns the number of bytes sent upon success, mask that and return zero instead*/ return (err < 0) ? err : 0; } /* Writes a byte to the m5602 */ int m5602_write_bridge(struct sd *sd, const u8 address, const 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; gspca_dbg(gspca_dev, D_CONF, "Writing bridge register 0x%x with 0x%x\n", address, i2c_data); memcpy(buf, bridge_urb_skeleton, sizeof(bridge_urb_skeleton)); buf[1] = address; buf[3] = i2c_data; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x19, 0x0000, buf, 4, M5602_URB_MSG_TIMEOUT); /* usb_control_msg(...) returns the number of bytes sent upon success, mask that and return zero instead */ return (err < 0) ? err : 0; } static int m5602_wait_for_i2c(struct sd *sd) { int err; u8 data; do { err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, &data); } while ((data & I2C_BUSY) && !err); return err; } int m5602_read_sensor(struct sd *sd, const u8 address, u8 *i2c_data, const u8 len) { int err, i; struct gspca_dev *gspca_dev = (struct gspca_dev *) sd; if (!len || len > sd->sensor->i2c_regW) return -EINVAL; err = m5602_wait_for_i2c(sd); if (err < 0) return err; err = m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR, sd->sensor->i2c_slave_id); if (err < 0) return err; err = m5602_write_bridge(sd, M5602_XB_I2C_REG_ADDR, address); if (err < 0) return err; /* Sensors with registers that are of only one byte width are differently read */ /* FIXME: This works with the ov9650, but has issues with the po1030 */ if (sd->sensor->i2c_regW == 1) { err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 1); if (err < 0) return err; err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x08); } else { err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x18 + len); } for (i = 0; (i < len) && !err; i++) { err = m5602_wait_for_i2c(sd); if (err < 0) return err; err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i])); gspca_dbg(gspca_dev, D_CONF, "Reading sensor register 0x%x containing 0x%x\n", address, *i2c_data); } return err; } int m5602_write_sensor(struct sd *sd, const u8 address, u8 *i2c_data, const u8 len) { int err, i; u8 *p; struct gspca_dev *gspca_dev = (struct gspca_dev *) sd; struct usb_device *udev = sd->gspca_dev.dev; __u8 *buf = sd->gspca_dev.usb_buf; /* No sensor with a data width larger than 16 bits has yet been seen */ if (len > sd->sensor->i2c_regW || !len) return -EINVAL; memcpy(buf, sensor_urb_skeleton, sizeof(sensor_urb_skeleton)); buf[11] = sd->sensor->i2c_slave_id; buf[15] = address; /* Special case larger sensor writes */ p = buf + 16; /* Copy a four byte write sequence for each byte to be written to */ for (i = 0; i < len; i++) { memcpy(p, sensor_urb_skeleton + 16, 4); p[3] = i2c_data[i]; p += 4; gspca_dbg(gspca_dev, D_CONF, "Writing sensor register 0x%x with 0x%x\n", address, i2c_data[i]); } /* Copy the tailer */ memcpy(p, sensor_urb_skeleton + 20, 4); /* Set the total length */ p[3] = 0x10 + len; err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x04, 0x40, 0x19, 0x0000, buf, 20 + len * 4, M5602_URB_MSG_TIMEOUT); return (err < 0) ? err : 0; } /* Dump all the registers of the m5602 bridge, unfortunately this breaks the camera until it's power cycled */ static void m5602_dump_bridge(struct sd *sd) { int i; for (i = 0; i < 0x80; i++) { unsigned char val = 0; m5602_read_bridge(sd, i, &val); pr_info("ALi m5602 address 0x%x contains 0x%x\n", i, val); } pr_info("Warning: The ALi m5602 webcam probably won't work until it's power cycled\n"); } static int m5602_probe_sensor(struct sd *sd) { /* Try the po1030 */ sd->sensor = &po1030; if (!sd->sensor->probe(sd)) return 0; /* Try the mt9m111 sensor */ sd->sensor = &mt9m111; if (!sd->sensor->probe(sd)) return 0; /* Try the s5k4aa */ sd->sensor = &s5k4aa; if (!sd->sensor->probe(sd)) return 0; /* Try the ov9650 */ sd->sensor = &ov9650; if (!sd->sensor->probe(sd)) return 0; /* Try the ov7660 */ sd->sensor = &ov7660; if (!sd->sensor->probe(sd)) return 0; /* Try the s5k83a */ sd->sensor = &s5k83a; if (!sd->sensor->probe(sd)) return 0; /* More sensor probe function goes here */ pr_info("Failed to find a sensor\n"); sd->sensor = NULL; return -ENODEV; } static int m5602_configure(struct gspca_dev *gspca_dev, const struct usb_device_id *id); static int m5602_init(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int err; gspca_dbg(gspca_dev, D_CONF, "Initializing ALi m5602 webcam\n"); /* Run the init sequence */ err = sd->sensor->init(sd); return err; } static int m5602_init_controls(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (!sd->sensor->init_controls) return 0; return sd->sensor->init_controls(sd); } static int m5602_start_transfer(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; __u8 *buf = sd->gspca_dev.usb_buf; int err; /* Send start command to the camera */ const u8 buffer[4] = {0x13, 0xf9, 0x0f, 0x01}; if (sd->sensor->start) sd->sensor->start(sd); memcpy(buf, buffer, sizeof(buffer)); err = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0x04, 0x40, 0x19, 0x0000, buf, sizeof(buffer), M5602_URB_MSG_TIMEOUT); gspca_dbg(gspca_dev, D_STREAM, "Transfer started\n"); return (err < 0) ? err : 0; } static void m5602_urb_complete(struct gspca_dev *gspca_dev, u8 *data, int len) { struct sd *sd = (struct sd *) gspca_dev; if (len < 6) { gspca_dbg(gspca_dev, D_PACK, "Packet is less than 6 bytes\n"); return; } /* Frame delimiter: ff xx xx xx ff ff */ if (data[0] == 0xff && data[4] == 0xff && data[5] == 0xff && data[2] != sd->frame_id) { gspca_dbg(gspca_dev, D_FRAM, "Frame delimiter detected\n"); sd->frame_id = data[2]; /* Remove the extra fluff appended on each header */ data += 6; len -= 6; /* Complete the last frame (if any) */ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); sd->frame_count++; /* Create a new frame */ gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); gspca_dbg(gspca_dev, D_FRAM, "Starting new frame %d\n", sd->frame_count); } else { int cur_frame_len; cur_frame_len = gspca_dev->image_len; /* Remove urb header */ data += 4; len -= 4; if (cur_frame_len + len <= gspca_dev->pixfmt.sizeimage) { gspca_dbg(gspca_dev, D_FRAM, "Continuing frame %d copying %d bytes\n", sd->frame_count, len); gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } else { /* Add the remaining data up to frame size */ gspca_frame_add(gspca_dev, INTER_PACKET, data, gspca_dev->pixfmt.sizeimage - cur_frame_len); } } } static void m5602_stop_transfer(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; /* Run the sensor specific end transfer sequence */ if (sd->sensor->stop) sd->sensor->stop(sd); } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = m5602_configure, .init = m5602_init, .init_controls = m5602_init_controls, .start = m5602_start_transfer, .stopN = m5602_stop_transfer, .pkt_scan = m5602_urb_complete }; /* this function is called at probe time */ static int m5602_configure(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; int err; cam = &gspca_dev->cam; if (dump_bridge) m5602_dump_bridge(sd); /* Probe sensor */ err = m5602_probe_sensor(sd); if (err) goto fail; return 0; fail: gspca_err(gspca_dev, "ALi m5602 webcam failed\n"); cam->cam_mode = NULL; cam->nmodes = 0; return err; } static int m5602_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 m5602_disconnect(struct usb_interface *intf) { struct gspca_dev *gspca_dev = usb_get_intfdata(intf); struct sd *sd = (struct sd *) gspca_dev; if (sd->sensor->disconnect) sd->sensor->disconnect(sd); gspca_disconnect(intf); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = m5602_table, .probe = m5602_probe, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif .disconnect = m5602_disconnect }; module_usb_driver(sd_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); module_param(force_sensor, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(force_sensor, "forces detection of a sensor, 1 = OV9650, 2 = S5K83A, 3 = S5K4AA, 4 = MT9M111, 5 = PO1030, 6 = OV7660"); 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 usb sensor registers at startup providing a sensor is found");
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