Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * spca1528 subdriver
 *
 * Copyright (C) 2010-2011 Jean-Francois Moine (http://moinejf.free.fr)
 */
 
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
#define MODULE_NAME "spca1528"
 
#include "gspca.h"
#include "jpeg.h"
 
MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("SPCA1528 USB Camera Driver");
MODULE_LICENSE("GPL");
 
/* specific webcam descriptor */
struct sd {
<------>struct gspca_dev gspca_dev;	/* !! must be the first item */
 
<------>u8 pkt_seq;
 
<------>u8 jpeg_hdr[JPEG_HDR_SZ];
};
 
static const struct v4l2_pix_format vga_mode[] = {
/*		(does not work correctly)
<------>{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
<------><------>.bytesperline = 176,
<------><------>.sizeimage = 176 * 144 * 5 / 8 + 590,
<------><------>.colorspace = V4L2_COLORSPACE_JPEG,
<------><------>.priv = 3},
*/
<------>{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
<------><------>.bytesperline = 320,
<------><------>.sizeimage = 320 * 240 * 4 / 8 + 590,
<------><------>.colorspace = V4L2_COLORSPACE_JPEG,
<------><------>.priv = 2},
<------>{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
<------><------>.bytesperline = 640,
<------><------>.sizeimage = 640 * 480 * 3 / 8 + 590,
<------><------>.colorspace = V4L2_COLORSPACE_JPEG,
<------><------>.priv = 1},
};
 
/* read <len> bytes to gspca usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
<------><------><------>u8 req,
<------><------><------>u16 index,
<------><------><------>int len)
{
#if USB_BUF_SZ < 64
#error "USB buffer too small"
#endif
<------>struct usb_device *dev = gspca_dev->dev;
<------>int ret;
 
<------>if (gspca_dev->usb_err < 0)
<------><------>return;
<------>ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
<------><------><------>req,
<------><------><------>USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
<------><------><------>0x0000,			/* value */
<------><------><------>index,
<------><------><------>gspca_dev->usb_buf, len,
<------><------><------>500);
<------>gspca_dbg(gspca_dev, D_USBI, "GET %02x 0000 %04x %02x\n", req, index,
<------><------>  gspca_dev->usb_buf[0]);
<------>if (ret < 0) {
<------><------>pr_err("reg_r err %d\n", ret);
<------><------>gspca_dev->usb_err = ret;
<------><------>/*
<------><------> * Make sure the buffer is zeroed to avoid uninitialized
<------><------> * values.
<------><------> */
<------><------>memset(gspca_dev->usb_buf, 0, USB_BUF_SZ);
<------>}
}
 
static void reg_w(struct gspca_dev *gspca_dev,
<------><------><------>u8 req,
<------><------><------>u16 value,
<------><------><------>u16 index)
{
<------>struct usb_device *dev = gspca_dev->dev;
<------>int ret;
 
<------>if (gspca_dev->usb_err < 0)
<------><------>return;
<------>gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x\n", req, value, index);
<------>ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
<------><------><------>req,
<------><------><------>USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
<------><------><------>value, index,
<------><------><------>NULL, 0, 500);
<------>if (ret < 0) {
<------><------>pr_err("reg_w err %d\n", ret);
<------><------>gspca_dev->usb_err = ret;
<------>}
}
 
static void reg_wb(struct gspca_dev *gspca_dev,
<------><------><------>u8 req,
<------><------><------>u16 value,
<------><------><------>u16 index,
<------><------><------>u8 byte)
{
<------>struct usb_device *dev = gspca_dev->dev;
<------>int ret;
 
<------>if (gspca_dev->usb_err < 0)
<------><------>return;
<------>gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x %02x\n",
<------><------>  req, value, index, byte);
<------>gspca_dev->usb_buf[0] = byte;
<------>ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
<------><------><------>req,
<------><------><------>USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
<------><------><------>value, index,
<------><------><------>gspca_dev->usb_buf, 1, 500);
<------>if (ret < 0) {
<------><------>pr_err("reg_w err %d\n", ret);
<------><------>gspca_dev->usb_err = ret;
<------>}
}
 
static void wait_status_0(struct gspca_dev *gspca_dev)
{
<------>int i, w;
 
<------>i = 16;
<------>w = 0;
<------>do {
<------><------>reg_r(gspca_dev, 0x21, 0x0000, 1);
<------><------>if (gspca_dev->usb_buf[0] == 0)
<------><------><------>return;
<------><------>w += 15;
<------><------>msleep(w);
<------>} while (--i > 0);
<------>gspca_err(gspca_dev, "wait_status_0 timeout\n");
<------>gspca_dev->usb_err = -ETIME;
}
 
static void wait_status_1(struct gspca_dev *gspca_dev)
{
<------>int i;
 
<------>i = 10;
<------>do {
<------><------>reg_r(gspca_dev, 0x21, 0x0001, 1);
<------><------>msleep(10);
<------><------>if (gspca_dev->usb_buf[0] == 1) {
<------><------><------>reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
<------><------><------>reg_r(gspca_dev, 0x21, 0x0001, 1);
<------><------><------>return;
<------><------>}
<------>} while (--i > 0);
<------>gspca_err(gspca_dev, "wait_status_1 timeout\n");
<------>gspca_dev->usb_err = -ETIME;
}
 
static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{
<------>reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, val);
}
 
static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
<------>reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, val);
}
 
static void sethue(struct gspca_dev *gspca_dev, s32 val)
{
<------>reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, val);
}
 
static void setcolor(struct gspca_dev *gspca_dev, s32 val)
{
<------>reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, val);
}
 
static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
{
<------>reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, val);
}
 
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
<------><------><------>const struct usb_device_id *id)
{
<------>gspca_dev->cam.cam_mode = vga_mode;
<------>gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
<------>gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
<------><------><------>/*fixme: 256 in ms-win traces*/
 
<------>return 0;
}
 
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
<------>reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
<------>reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
<------>reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
<------>reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
<------>msleep(8);
<------>reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
<------>reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
<------>reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
 
<------>reg_r(gspca_dev, 0x20, 0x0000, 1);
<------>reg_r(gspca_dev, 0x20, 0x0000, 5);
<------>reg_r(gspca_dev, 0x23, 0x0000, 64);
<------>gspca_dbg(gspca_dev, D_PROBE, "%s%s\n", &gspca_dev->usb_buf[0x1c],
<------><------>  &gspca_dev->usb_buf[0x30]);
<------>reg_r(gspca_dev, 0x23, 0x0001, 64);
<------>return gspca_dev->usb_err;
}
 
/* function called at start time before URB creation */
static int sd_isoc_init(struct gspca_dev *gspca_dev)
{
<------>u8 mode;
 
<------>reg_r(gspca_dev, 0x00, 0x2520, 1);
<------>wait_status_0(gspca_dev);
<------>reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
<------>wait_status_1(gspca_dev);
 
<------>wait_status_0(gspca_dev);
<------>mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
<------>reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
<------>reg_r(gspca_dev, 0x25, 0x0004, 1);
<------>reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06);	/* 420 */
<------>reg_r(gspca_dev, 0x27, 0x0000, 1);
 
/* not useful..
<------>gspca_dev->alt = 4;		* use alternate setting 3 */
 
<------>return gspca_dev->usb_err;
}
 
/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
<------>struct sd *sd = (struct sd *) gspca_dev;
 
<------>/* initialize the JPEG header */
<------>jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
<------><------><------>gspca_dev->pixfmt.width,
<------><------><------>0x22);		/* JPEG 411 */
 
<------>/* the JPEG quality shall be 85% */
<------>jpeg_set_qual(sd->jpeg_hdr, 85);
 
<------>reg_r(gspca_dev, 0x00, 0x2520, 1);
<------>msleep(8);
 
<------>/* start the capture */
<------>wait_status_0(gspca_dev);
<------>reg_w(gspca_dev, 0x31, 0x0000, 0x0004);	/* start request */
<------>wait_status_1(gspca_dev);
<------>wait_status_0(gspca_dev);
<------>msleep(200);
 
<------>sd->pkt_seq = 0;
<------>return gspca_dev->usb_err;
}
 
static void sd_stopN(struct gspca_dev *gspca_dev)
{
<------>/* stop the capture */
<------>wait_status_0(gspca_dev);
<------>reg_w(gspca_dev, 0x31, 0x0000, 0x0000);	/* stop request */
<------>wait_status_1(gspca_dev);
<------>wait_status_0(gspca_dev);
}
 
/* move a packet adding 0x00 after 0xff */
static void add_packet(struct gspca_dev *gspca_dev,
<------><------><------>u8 *data,
<------><------><------>int len)
{
<------>int i;
 
<------>i = 0;
<------>do {
<------><------>if (data[i] == 0xff) {
<------><------><------>gspca_frame_add(gspca_dev, INTER_PACKET,
<------><------><------><------><------>data, i + 1);
<------><------><------>len -= i;
<------><------><------>data += i;
<------><------><------>*data = 0x00;
<------><------><------>i = 0;
<------><------>}
<------>} while (++i < len);
<------>gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}
 
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
<------><------><------>u8 *data,			/* isoc packet */
<------><------><------>int len)			/* iso packet length */
{
<------>struct sd *sd = (struct sd *) gspca_dev;
<------>static const u8 ffd9[] = {0xff, 0xd9};
 
<------>/* image packets start with:
<------> *	02 8n
<------> * with <n> bit:
<------> *	0x01: even (0) / odd (1) image
<------> *	0x02: end of image when set
<------> */
<------>if (len < 3)
<------><------>return;				/* empty packet */
<------>if (*data == 0x02) {
<------><------>if (data[1] & 0x02) {
<------><------><------>sd->pkt_seq = !(data[1] & 1);
<------><------><------>add_packet(gspca_dev, data + 2, len - 2);
<------><------><------>gspca_frame_add(gspca_dev, LAST_PACKET,
<------><------><------><------><------>ffd9, 2);
<------><------><------>return;
<------><------>}
<------><------>if ((data[1] & 1) != sd->pkt_seq)
<------><------><------>goto err;
<------><------>if (gspca_dev->last_packet_type == LAST_PACKET)
<------><------><------>gspca_frame_add(gspca_dev, FIRST_PACKET,
<------><------><------><------><------>sd->jpeg_hdr, JPEG_HDR_SZ);
<------><------>add_packet(gspca_dev, data + 2, len - 2);
<------><------>return;
<------>}
err:
<------>gspca_dev->last_packet_type = DISCARD_PACKET;
}
 
static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
{
<------>struct gspca_dev *gspca_dev =
<------><------>container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 
<------>gspca_dev->usb_err = 0;
 
<------>if (!gspca_dev->streaming)
<------><------>return 0;
 
<------>switch (ctrl->id) {
<------>case V4L2_CID_BRIGHTNESS:
<------><------>setbrightness(gspca_dev, ctrl->val);
<------><------>break;
<------>case V4L2_CID_CONTRAST:
<------><------>setcontrast(gspca_dev, ctrl->val);
<------><------>break;
<------>case V4L2_CID_HUE:
<------><------>sethue(gspca_dev, ctrl->val);
<------><------>break;
<------>case V4L2_CID_SATURATION:
<------><------>setcolor(gspca_dev, ctrl->val);
<------><------>break;
<------>case V4L2_CID_SHARPNESS:
<------><------>setsharpness(gspca_dev, ctrl->val);
<------><------>break;
<------>}
<------>return gspca_dev->usb_err;
}
 
static const struct v4l2_ctrl_ops sd_ctrl_ops = {
<------>.s_ctrl = sd_s_ctrl,
};
 
static int sd_init_controls(struct gspca_dev *gspca_dev)
{
<------>struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 
<------>gspca_dev->vdev.ctrl_handler = hdl;
<------>v4l2_ctrl_handler_init(hdl, 5);
<------>v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
<------><------><------>V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
<------>v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
<------><------><------>V4L2_CID_CONTRAST, 0, 8, 1, 1);
<------>v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
<------><------><------>V4L2_CID_HUE, 0, 255, 1, 0);
<------>v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
<------><------><------>V4L2_CID_SATURATION, 0, 8, 1, 1);
<------>v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
<------><------><------>V4L2_CID_SHARPNESS, 0, 255, 1, 0);
 
<------>if (hdl->error) {
<------><------>pr_err("Could not initialize controls\n");
<------><------>return hdl->error;
<------>}
<------>return 0;
}
 
/* sub-driver description */
static const struct sd_desc sd_desc = {
<------>.name = MODULE_NAME,
<------>.config = sd_config,
<------>.init = sd_init,
<------>.init_controls = sd_init_controls,
<------>.isoc_init = sd_isoc_init,
<------>.start = sd_start,
<------>.stopN = sd_stopN,
<------>.pkt_scan = sd_pkt_scan,
};
 
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
<------>{USB_DEVICE(0x04fc, 0x1528)},
<------>{}
};
MODULE_DEVICE_TABLE(usb, device_table);
 
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
<------><------><------>const struct usb_device_id *id)
{
<------>/* the video interface for isochronous transfer is 1 */
<------>if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
<------><------>return -ENODEV;
 
<------>return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
<------><------><------><------>THIS_MODULE);
}
 
static struct usb_driver sd_driver = {
<------>.name = MODULE_NAME,
<------>.id_table = device_table,
<------>.probe = sd_probe,
<------>.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
<------>.suspend = gspca_suspend,
<------>.resume = gspca_resume,
<------>.reset_resume = gspca_resume,
#endif
};
 
module_usb_driver(sd_driver);