1/*
2 *  Driver for the Auvitek AU0828 USB bridge
3 *
4 *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *
15 *  GNU General Public License for more details.
16 *
17 *  You should have received a copy of the GNU General Public License
18 *  along with this program; if not, write to the Free Software
19 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include <linux/usb.h>
23#include <linux/i2c.h>
24#include <linux/i2c-algo-bit.h>
25#include <media/tveeprom.h>
26
27/* Analog */
28#include <linux/videodev2.h>
29#include <media/videobuf-vmalloc.h>
30#include <media/v4l2-device.h>
31
32/* DVB */
33#include "demux.h"
34#include "dmxdev.h"
35#include "dvb_demux.h"
36#include "dvb_frontend.h"
37#include "dvb_net.h"
38#include "dvbdev.h"
39
40#include "au0828-reg.h"
41#include "au0828-cards.h"
42
43#define DRIVER_NAME "au0828"
44#define URB_COUNT   16
45#define URB_BUFSIZE (0xe522)
46
47/* Analog constants */
48#define NTSC_STD_W      720
49#define NTSC_STD_H      480
50
51#define AU0828_INTERLACED_DEFAULT       1
52#define V4L2_CID_PRIVATE_SHARPNESS  (V4L2_CID_PRIVATE_BASE + 0)
53
54/* Defination for AU0828 USB transfer */
55#define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
56#define AU0828_ISO_PACKETS_PER_URB      128
57
58#define AU0828_MIN_BUF 4
59#define AU0828_DEF_BUF 8
60
61#define AU0828_MAX_INPUT        4
62
63/* au0828 resource types (used for res_get/res_lock etc */
64#define AU0828_RESOURCE_VIDEO 0x01
65#define AU0828_RESOURCE_VBI   0x02
66
67enum au0828_itype {
68	AU0828_VMUX_UNDEFINED = 0,
69	AU0828_VMUX_COMPOSITE,
70	AU0828_VMUX_SVIDEO,
71	AU0828_VMUX_CABLE,
72	AU0828_VMUX_TELEVISION,
73	AU0828_VMUX_DVB,
74	AU0828_VMUX_DEBUG
75};
76
77struct au0828_input {
78	enum au0828_itype type;
79	unsigned int vmux;
80	unsigned int amux;
81	void (*audio_setup) (void *priv, int enable);
82};
83
84struct au0828_board {
85	char *name;
86	unsigned int tuner_type;
87	unsigned char tuner_addr;
88	unsigned char i2c_clk_divider;
89	struct au0828_input input[AU0828_MAX_INPUT];
90
91};
92
93struct au0828_dvb {
94	struct mutex lock;
95	struct dvb_adapter adapter;
96	struct dvb_frontend *frontend;
97	struct dvb_demux demux;
98	struct dmxdev dmxdev;
99	struct dmx_frontend fe_hw;
100	struct dmx_frontend fe_mem;
101	struct dvb_net net;
102	int feeding;
103};
104
105enum au0828_stream_state {
106	STREAM_OFF,
107	STREAM_INTERRUPT,
108	STREAM_ON
109};
110
111#define AUVI_INPUT(nr) (dev->board.input[nr])
112
113/* device state */
114enum au0828_dev_state {
115	DEV_INITIALIZED = 0x01,
116	DEV_DISCONNECTED = 0x02,
117	DEV_MISCONFIGURED = 0x04
118};
119
120struct au0828_fh {
121	struct au0828_dev *dev;
122	unsigned int  resources;
123
124	struct videobuf_queue        vb_vidq;
125	struct videobuf_queue        vb_vbiq;
126	enum v4l2_buf_type           type;
127};
128
129struct au0828_usb_isoc_ctl {
130		/* max packet size of isoc transaction */
131	int				max_pkt_size;
132
133		/* number of allocated urbs */
134	int				num_bufs;
135
136		/* urb for isoc transfers */
137	struct urb			**urb;
138
139		/* transfer buffers for isoc transfer */
140	char				**transfer_buffer;
141
142		/* Last buffer command and region */
143	u8				cmd;
144	int				pos, size, pktsize;
145
146		/* Last field: ODD or EVEN? */
147	int				field;
148
149		/* Stores incomplete commands */
150	u32				tmp_buf;
151	int				tmp_buf_len;
152
153		/* Stores already requested buffers */
154	struct au0828_buffer		*buf;
155	struct au0828_buffer		*vbi_buf;
156
157		/* Stores the number of received fields */
158	int				nfields;
159
160		/* isoc urb callback */
161	int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
162
163};
164
165/* buffer for one video frame */
166struct au0828_buffer {
167	/* common v4l buffer stuff -- must be first */
168	struct videobuf_buffer vb;
169
170	struct list_head frame;
171	int top_field;
172	int receiving;
173};
174
175struct au0828_dmaqueue {
176	struct list_head       active;
177	struct list_head       queued;
178
179	wait_queue_head_t          wq;
180
181	/* Counters to control buffer fill */
182	int                        pos;
183};
184
185struct au0828_dev {
186	struct mutex mutex;
187	struct usb_device	*usbdev;
188	int			boardnr;
189	struct au0828_board	board;
190	u8			ctrlmsg[64];
191
192	/* I2C */
193	struct i2c_adapter		i2c_adap;
194	struct i2c_algorithm		i2c_algo;
195	struct i2c_client		i2c_client;
196	u32 				i2c_rc;
197
198	/* Digital */
199	struct au0828_dvb		dvb;
200
201	/* Analog */
202	struct v4l2_device v4l2_dev;
203	int users;
204	unsigned int resources;	/* resources in use */
205	struct video_device *vdev;
206	struct video_device *vbi_dev;
207	struct timer_list vid_timeout;
208	int vid_timeout_running;
209	struct timer_list vbi_timeout;
210	int vbi_timeout_running;
211	int width;
212	int height;
213	int vbi_width;
214	int vbi_height;
215	u32 vbi_read;
216	u32 field_size;
217	u32 frame_size;
218	u32 bytesperline;
219	int type;
220	u8 ctrl_ainput;
221	__u8 isoc_in_endpointaddr;
222	u8 isoc_init_ok;
223	int greenscreen_detected;
224	unsigned int frame_count;
225	int ctrl_freq;
226	int input_type;
227	unsigned int ctrl_input;
228	enum au0828_dev_state dev_state;
229	enum au0828_stream_state stream_state;
230	wait_queue_head_t open;
231
232	struct mutex lock;
233
234	/* Isoc control struct */
235	struct au0828_dmaqueue vidq;
236	struct au0828_dmaqueue vbiq;
237	struct au0828_usb_isoc_ctl isoc_ctl;
238	spinlock_t slock;
239
240	/* usb transfer */
241	int alt;		/* alternate */
242	int max_pkt_size;	/* max packet size of isoc transaction */
243	int num_alt;		/* Number of alternative settings */
244	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
245	struct urb *urb[AU0828_MAX_ISO_BUFS];	/* urb for isoc transfers */
246	char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
247						   transfer */
248
249	/* USB / URB Related */
250	int		urb_streaming;
251	struct urb	*urbs[URB_COUNT];
252};
253
254/* ----------------------------------------------------------- */
255#define au0828_read(dev, reg) au0828_readreg(dev, reg)
256#define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
257#define au0828_andor(dev, reg, mask, value) 				\
258	 au0828_writereg(dev, reg, 					\
259	(au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
260
261#define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
262#define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
263
264/* ----------------------------------------------------------- */
265/* au0828-core.c */
266extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
267extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
268extern int au0828_debug;
269
270/* ----------------------------------------------------------- */
271/* au0828-cards.c */
272extern struct au0828_board au0828_boards[];
273extern struct usb_device_id au0828_usb_id_table[];
274extern void au0828_gpio_setup(struct au0828_dev *dev);
275extern int au0828_tuner_callback(void *priv, int component,
276				 int command, int arg);
277extern void au0828_card_setup(struct au0828_dev *dev);
278
279/* ----------------------------------------------------------- */
280/* au0828-i2c.c */
281extern int au0828_i2c_register(struct au0828_dev *dev);
282extern int au0828_i2c_unregister(struct au0828_dev *dev);
283
284/* ----------------------------------------------------------- */
285/* au0828-video.c */
286int au0828_analog_register(struct au0828_dev *dev,
287			   struct usb_interface *interface);
288int au0828_analog_stream_disable(struct au0828_dev *d);
289void au0828_analog_unregister(struct au0828_dev *dev);
290
291/* ----------------------------------------------------------- */
292/* au0828-dvb.c */
293extern int au0828_dvb_register(struct au0828_dev *dev);
294extern void au0828_dvb_unregister(struct au0828_dev *dev);
295
296/* au0828-vbi.c */
297extern struct videobuf_queue_ops au0828_vbi_qops;
298
299#define dprintk(level, fmt, arg...)\
300	do { if (au0828_debug & level)\
301		printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
302	} while (0)
303