V4L/DVB (7019): V4L: add support for Syntek DC1125 webcams

This driver supports cameras with USB ID 174f:a311 or 05e1:0501,
and the ov965x sensors. These devices are found in some Asus laptops
and probably somewhere else.

It is based on the stk11xx driver written by Nicolas Vivien

Signed-off-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/drivers/media/video/stk-webcam.h b/drivers/media/video/stk-webcam.h
new file mode 100644
index 000000000000..7e989d1ac1e0
--- /dev/null
+++ b/drivers/media/video/stk-webcam.h
@@ -0,0 +1,138 @@
+/*
+ * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
+ *
+ * Copyright (C) 2006 Nicolas VIVIEN
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ *
+ * 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
+ */
+
+#ifndef STKWEBCAM_H
+#define STKWEBCAM_H
+
+#include <linux/usb.h>
+#include <media/v4l2-common.h>
+
+#define DRIVER_VERSION          "v0.0.1"
+#define DRIVER_VERSION_NUM      0x000001
+
+#define MAX_ISO_BUFS            3
+#define ISO_FRAMES_PER_DESC     16
+#define ISO_MAX_FRAME_SIZE      3 * 1024
+#define ISO_BUFFER_SIZE         (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+
+
+#define PREFIX                          "stkwebcam: "
+#define STK_INFO(str, args...)          printk(KERN_INFO PREFIX str, ##args)
+#define STK_ERROR(str, args...)         printk(KERN_ERR PREFIX str, ##args)
+#define STK_WARNING(str, args...)       printk(KERN_WARNING PREFIX str, ##args)
+
+struct stk_iso_buf {
+        void *data;
+        int length;
+        int read;
+        struct urb *urb;
+};
+
+/* Streaming IO buffers */
+struct stk_sio_buffer {
+        struct v4l2_buffer v4lbuf;
+        char *buffer;
+        int mapcount;
+        struct stk_camera *dev;
+        struct list_head list;
+};
+
+enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
+
+struct stk_video {
+        enum stk_mode mode;
+        int brightness;
+        __u32 palette;
+        int hflip;
+        int vflip;
+};
+
+enum stk_status {
+        S_PRESENT = 1,
+        S_INITIALISED = 2,
+        S_MEMALLOCD = 4,
+        S_STREAMING = 8,
+};
+#define is_present(dev)         ((dev)->status & S_PRESENT)
+#define is_initialised(dev)     ((dev)->status & S_INITIALISED)
+#define is_streaming(dev)       ((dev)->status & S_STREAMING)
+#define is_memallocd(dev)       ((dev)->status & S_MEMALLOCD)
+#define set_present(dev)        ((dev)->status = S_PRESENT)
+#define unset_present(dev)      ((dev)->status &= \
+                                        ~(S_PRESENT|S_INITIALISED|S_STREAMING))
+#define set_initialised(dev)    ((dev)->status |= S_INITIALISED)
+#define set_memallocd(dev)      ((dev)->status |= S_MEMALLOCD)
+#define unset_memallocd(dev)    ((dev)->status &= ~S_MEMALLOCD)
+#define set_streaming(dev)      ((dev)->status |= S_STREAMING)
+#define unset_streaming(dev)    ((dev)->status &= ~S_STREAMING)
+
+struct regval {
+        unsigned reg;
+        unsigned val;
+};
+
+struct stk_camera {
+        struct video_device vdev;
+        struct usb_device *udev;
+        struct usb_interface *interface;
+        int webcam_model;
+        struct file *owner;
+
+        u8 isoc_ep;
+
+        struct kref kref;
+        /* Not sure if this is right */
+        atomic_t urbs_used;
+
+        struct stk_video vsettings;
+
+        enum stk_status status;
+
+        spinlock_t spinlock;
+        wait_queue_head_t wait_frame;
+
+        struct stk_iso_buf *isobufs;
+
+        int frame_size;
+        /* Streaming buffers */
+        unsigned int n_sbufs;
+        struct stk_sio_buffer *sio_bufs;
+        struct list_head sio_avail;
+        struct list_head sio_full;
+        unsigned sequence;
+};
+
+#define to_stk_camera(d) container_of(d, struct stk_camera, kref)
+#define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
+
+void stk_camera_delete(struct kref *);
+int stk_camera_write_reg(struct stk_camera *, u16, u8);
+int stk_camera_read_reg(struct stk_camera *, u16, int *);
+
+int stk_sensor_outb(struct stk_camera *dev, u8 reg, u8 val);
+int stk_sensor_inb(struct stk_camera *dev, u8 reg, u8 *val);
+int stk_sensor_init(struct stk_camera *);
+int stk_sensor_configure(struct stk_camera *);
+int stk_sensor_sleep(struct stk_camera *dev);
+int stk_sensor_wakeup(struct stk_camera *dev);
+int stk_sensor_set_brightness(struct stk_camera *dev, int br);
+
+#endif