1 files changed, 444 insertions, 0 deletions

diff --git a/drivers/media/usb/gspca/spca1528.c b/drivers/media/usb/gspca/spca1528.c
new file mode 100644
index 000000000000..14d635277d71
--- /dev/null
+++ b/drivers/media/usb/gspca/spca1528.c
@@ -0,0 +1,444 @@
+/*
+ * spca1528 subdriver
+ *
+ * Copyright (C) 2010-2011 Jean-Francois Moine (http://moinejf.free.fr)
+ *
+ * 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
+ * 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
+ */
+
+#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);
+        PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index,
+                         gspca_dev->usb_buf[0]);
+        if (ret < 0) {
+                pr_err("reg_r err %d\n", ret);
+                gspca_dev->usb_err = ret;
+        }
+}
+
+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;
+        PDEBUG(D_USBO, "SET %02x %04x %04x", 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;
+        PDEBUG(D_USBO, "SET %02x %04x %04x %02x", 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);
+        PDEBUG(D_ERR, "wait_status_0 timeout");
+        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);
+        PDEBUG(D_ERR, "wait_status_1 timeout");
+        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);
+        PDEBUG(D_PROBE, "%s%s", &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->height, gspca_dev->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);