V4L/DVB (11066): au0828: add support for analog functionality in bridge

Add support for the analog functionality found in the au0828 bridge

Thanks to Michael Krufky <mkrufky@linuxtv.org> and Steven Toth
<stoth@linuxtv.org> for providing sample hardware, engineering level support,
and testing.

Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
[mchehab@redhat.com: fix compilation by adding linux/version.h]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 167 insertions, 7 deletions

diff --git a/drivers/media/video/au0828/au0828.h b/drivers/media/video/au0828/au0828.h
index 9d6a1161dc98..3b8e3e913475 100644
--- a/drivers/media/video/au0828/au0828.h
+++ b/drivers/media/video/au0828/au0828.h
@@ -24,6 +24,10 @@
 #include <linux/i2c-algo-bit.h>
 #include <media/tveeprom.h>
 
+/* Analog */
+#include <linux/videodev2.h>
+#include <media/videobuf-vmalloc.h>
+
 /* DVB */
 #include "demux.h"
 #include "dmxdev.h"
@@ -39,8 +43,48 @@
 #define URB_COUNT   16
 #define URB_BUFSIZE (0xe522)
 
+/* Analog constants */
+#define NTSC_STD_W      720
+#define NTSC_STD_H      480
+
+#define AU0828_INTERLACED_DEFAULT       1
+#define V4L2_CID_PRIVATE_SHARPNESS  (V4L2_CID_PRIVATE_BASE + 0)
+
+/* Defination for AU0828 USB transfer */
+#define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
+#define AU0828_ISO_PACKETS_PER_URB      10
+#define AU0828_ISO_MAX_FRAME_SIZE       (3 * 1024)
+#define AU0828_ISO_BUFFER_SIZE          (AU0828_ISO_PACKETS_PER_URB * AU0828_ISO_MAX_FRAME_SIZE)
+
+#define AU0828_MIN_BUF 4
+#define AU0828_DEF_BUF 8
+
+#define AU0828_MAX_IMAGES       10
+#define AU0828_FRAME_SIZE       (1028 * 1024 * 4)
+#define AU0828_URB_TIMEOUT      msecs_to_jiffies(AU0828_MAX_ISO_BUFS * AU0828_ISO_PACKETS_PER_URB)
+
+#define AU0828_MAX_INPUT        4
+
+enum au0828_itype {
+        AU0828_VMUX_COMPOSITE = 1,
+        AU0828_VMUX_SVIDEO,
+        AU0828_VMUX_CABLE,
+        AU0828_VMUX_TELEVISION,
+        AU0828_VMUX_DVB,
+        AU0828_VMUX_DEBUG
+};
+
+struct au0828_input {
+        enum au0828_itype type;
+        unsigned int vmux;
+        unsigned int amux;
+        void (*audio_setup) (void *priv, int enable);
+};
+
 struct au0828_board {
         char *name;
+        struct au0828_input input[AU0828_MAX_INPUT];
+
 };
 
 struct au0828_dvb {
@@ -55,6 +99,83 @@ struct au0828_dvb {
         int feeding;
 };
 
+enum au0828_stream_state {
+        STREAM_OFF,
+        STREAM_INTERRUPT,
+        STREAM_ON
+};
+
+#define AUVI_INPUT(nr) (&au0828_boards[dev->board].input[nr])
+
+/* device state */
+enum au0828_dev_state {
+        DEV_INITIALIZED = 0x01,
+        DEV_DISCONNECTED = 0x02,
+        DEV_MISCONFIGURED = 0x04
+};
+
+struct au0828_fh {
+        struct au0828_dev *dev;
+        unsigned int  stream_on:1;      /* Locks streams */
+        struct videobuf_queue        vb_vidq;
+        enum v4l2_buf_type           type;
+};
+
+struct au0828_usb_isoc_ctl {
+                /* max packet size of isoc transaction */
+        int                             max_pkt_size;
+
+                /* number of allocated urbs */
+        int                             num_bufs;
+
+                /* urb for isoc transfers */
+        struct urb                      **urb;
+
+                /* transfer buffers for isoc transfer */
+        char                            **transfer_buffer;
+
+                /* Last buffer command and region */
+        u8                              cmd;
+        int                             pos, size, pktsize;
+
+                /* Last field: ODD or EVEN? */
+        int                             field;
+
+                /* Stores incomplete commands */
+        u32                             tmp_buf;
+        int                             tmp_buf_len;
+
+                /* Stores already requested buffers */
+        struct au0828_buffer            *buf;
+
+                /* Stores the number of received fields */
+        int                             nfields;
+
+                /* isoc urb callback */
+        int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
+
+};
+
+/* buffer for one video frame */
+struct au0828_buffer {
+        /* common v4l buffer stuff -- must be first */
+        struct videobuf_buffer vb;
+
+        struct list_head frame;
+        int top_field;
+        int receiving;
+};
+
+struct au0828_dmaqueue {
+        struct list_head       active;
+        struct list_head       queued;
+
+        wait_queue_head_t          wq;
+
+        /* Counters to control buffer fill */
+        int                        pos;
+};
+
 struct au0828_dev {
         struct mutex mutex;
         struct usb_device       *usbdev;
@@ -70,16 +191,49 @@ struct au0828_dev {
         /* Digital */
         struct au0828_dvb               dvb;
 
+        /* Analog */
+        struct list_head au0828list;
+        int users;
+        unsigned int stream_on:1;       /* Locks streams */
+        struct video_device *vdev;
+        struct video_device *vbi_dev;
+        int width;
+        int height;
+        u32 field_size;
+        u32 frame_size;
+        u32 bytesperline;
+        int type;
+        u8 ctrl_ainput;
+        __u8 isoc_in_endpointaddr;
+        u8 isoc_init_ok;
+        int greenscreen_detected;
+        unsigned int frame_count;
+        int ctrl_freq;
+        int input_type;
+        unsigned int ctrl_input;
+        enum au0828_dev_state dev_state;
+        enum au0828_stream_state stream_state;
+        wait_queue_head_t open;
+
+        struct mutex lock;
+
+        /* Isoc control struct */
+        struct au0828_dmaqueue vidq;
+        struct au0828_usb_isoc_ctl isoc_ctl;
+        spinlock_t slock;
+
+        /* usb transfer */
+        int alt;                /* alternate */
+        int max_pkt_size;       /* max packet size of isoc transaction */
+        int num_alt;            /* Number of alternative settings */
+        unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
+        struct urb *urb[AU0828_MAX_ISO_BUFS];   /* urb for isoc transfers */
+        char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
+                                                   transfer */
+
         /* USB / URB Related */
         int             urb_streaming;
         struct urb      *urbs[URB_COUNT];
-
-};
-
-struct au0828_buff {
-        struct au0828_dev       *dev;
-        struct urb              *purb;
-        struct list_head        buff_list;
 };
 
 /* ----------------------------------------------------------- */
@@ -115,6 +269,12 @@ extern void au0828_call_i2c_clients(struct au0828_dev *dev,
         unsigned int cmd, void *arg);
 
 /* ----------------------------------------------------------- */
+/* au0828-video.c */
+int au0828_analog_register(struct au0828_dev *dev);
+int au0828_analog_stream_disable(struct au0828_dev *d);
+void au0828_analog_unregister(struct au0828_dev *dev);
+
+/* ----------------------------------------------------------- */
 /* au0828-dvb.c */
 extern int au0828_dvb_register(struct au0828_dev *dev);
 extern void au0828_dvb_unregister(struct au0828_dev *dev);