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>

drivers/media/video/au0828/Makefile

-au0828-objs	:= au0828-core.o au0828-i2c.o au0828-cards.o au0828-dvb.o
+au0828-objs	:= au0828-core.o au0828-i2c.o au0828-cards.o au0828-dvb.o au0828-video.o
 
 obj-$(CONFIG_VIDEO_AU0828) += au0828.o
 

drivers/media/video/au0828/au0828-cards.c

@@ -21,6 +21,18 @@
 
 #include "au0828.h"
 #include "au0828-cards.h"
+#include "au8522.h"
+
+void hvr950q_cs5340_audio(void *priv, int enable)
+{
+	/* Because the HVR-950q shares an i2s bus between the cs5340 and the
+	   au8522, we need to hold cs5340 in reset when using the au8522 */
+	struct au0828_dev *dev = priv;
+	if (enable == 1)
+		au0828_set(dev, REG_000, 0x10);
+	else
+		au0828_clear(dev, REG_000, 0x10);
+}
 
 struct au0828_board au0828_boards[] = {
 	[AU0828_BOARD_UNKNOWN] = {
@@ -31,6 +43,25 @@ struct au0828_board au0828_boards[] = {
 	},
 	[AU0828_BOARD_HAUPPAUGE_HVR950Q] = {
 		.name	= "Hauppauge HVR950Q",
+		.input = {
+			{
+				.type = AU0828_VMUX_TELEVISION,
+				.vmux = AU8522_COMPOSITE_CH4_SIF,
+				.amux = AU8522_AUDIO_SIF,
+			},
+			{
+				.type = AU0828_VMUX_COMPOSITE,
+				.vmux = AU8522_COMPOSITE_CH1,
+				.amux = AU8522_AUDIO_NONE,
+				.audio_setup = hvr950q_cs5340_audio,
+			},
+			{
+				.type = AU0828_VMUX_SVIDEO,
+				.vmux = AU8522_SVIDEO_CH13,
+				.amux = AU8522_AUDIO_NONE,
+				.audio_setup = hvr950q_cs5340_audio,
+			},
+		},
 	},
 	[AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL] = {
 		.name	= "Hauppauge HVR950Q rev xxF8",
@@ -144,21 +175,23 @@ void au0828_gpio_setup(struct au0828_dev *dev)
 		 * 4 - CS5340
 		 * 5 - AU8522 Demodulator
 		 * 6 - eeprom W/P
+		 * 7 - power supply
 		 * 9 - XC5000 Tuner
 		 */
 
 		/* Into reset */
 		au0828_write(dev, REG_003, 0x02);
-		au0828_write(dev, REG_002, 0x88 | 0x20);
+		au0828_write(dev, REG_002, 0x80 | 0x20 | 0x10);
 		au0828_write(dev, REG_001, 0x0);
 		au0828_write(dev, REG_000, 0x0);
 		msleep(100);
 
-		/* Out of reset */
+		/* Out of reset (leave the cs5340 in reset until needed) */
 		au0828_write(dev, REG_003, 0x02);
 		au0828_write(dev, REG_001, 0x02);
-		au0828_write(dev, REG_002, 0x88 | 0x20);
-		au0828_write(dev, REG_000, 0x88 | 0x20 | 0x40);
+		au0828_write(dev, REG_002, 0x80 | 0x20 | 0x10);
+		au0828_write(dev, REG_000, 0x80 | 0x40 | 0x20);
+
 		msleep(250);
 		break;
 	case AU0828_BOARD_DVICO_FUSIONHDTV7:

drivers/media/video/au0828/au0828-core.c

@@ -146,6 +146,8 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
 	/* Digital TV */
 	au0828_dvb_unregister(dev);
 
+	au0828_analog_unregister(dev);
+
 	/* I2C */
 	au0828_i2c_unregister(dev);
 
@@ -162,9 +164,11 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
 static int au0828_usb_probe(struct usb_interface *interface,
 	const struct usb_device_id *id)
 {
-	int ifnum;
+	int ifnum, i;
 	struct au0828_dev *dev;
 	struct usb_device *usbdev = interface_to_usbdev(interface);
+	struct usb_host_interface *iface_desc;
+	struct usb_endpoint_descriptor *endpoint;
 
 	ifnum = interface->altsetting->desc.bInterfaceNumber;
 
@@ -189,6 +193,30 @@ static int au0828_usb_probe(struct usb_interface *interface,
 
 	usb_set_intfdata(interface, dev);
 
+	/* set au0828 usb interface0 to as5 */
+	usb_set_interface(usbdev,
+			  interface->cur_altsetting->desc.bInterfaceNumber, 5);
+
+	/* Figure out which endpoint has the isoc interface */
+	iface_desc = interface->cur_altsetting;
+	for(i = 0; i < iface_desc->desc.bNumEndpoints; i++){
+		endpoint = &iface_desc->endpoint[i].desc;
+		if(((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)	&&
+		   ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)){
+
+			/* we find our isoc in endpoint */
+			u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
+			dev->max_pkt_size = (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
+			dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
+		}
+	}
+	if(!(dev->isoc_in_endpointaddr)) {
+		printk("Could not locate isoc endpoint\n");
+		kfree(dev);
+		return -ENODEV;
+	}
+
+
 	/* Power Up the bridge */
 	au0828_write(dev, REG_600, 1 << 4);
 
@@ -201,6 +229,9 @@ static int au0828_usb_probe(struct usb_interface *interface,
 	/* Setup */
 	au0828_card_setup(dev);
 
+	/* Analog TV */
+	au0828_analog_register(dev);
+
 	/* Digital TV */
 	au0828_dvb_register(dev);
 

drivers/media/video/au0828/au0828-reg.h

@@ -27,6 +27,9 @@
 #define REG_002 0x002
 #define REG_003 0x003
 
+#define AU0828_SENSORCTRL_100 0x100
+#define AU0828_SENSORCTRL_VBI_103 0x103
+
 #define REG_200 0x200
 #define REG_201 0x201
 #define REG_202 0x202
@@ -35,4 +38,7 @@
 #define REG_209 0x209
 #define REG_2FF 0x2ff
 
+/* Audio registers */
+#define AU0828_AUDIOCTRL_50C 0x50C
+
 #define REG_600 0x600

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;
 };
 
 /* ----------------------------------------------------------- */
@@ -114,6 +268,12 @@ extern int au0828_i2c_unregister(struct au0828_dev *dev);
 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);