2 * Driver for the NXP SAA7164 PCIe bridge
4 * Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
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.
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
15 * GNU General Public License for more details.
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.
26 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
27 | : Standard Linux driver framework for creating
28 | : exposing and managing interfaces to the rest
29 | : of the kernel or userland. Also uses _fw.c to load
30 | : firmware direct into the PCIe bus, bypassing layers.
32 saa7164_api..() : Translate kernel specific functions/features
33 | : into command buffers.
35 saa7164_cmd..() : Manages the flow of command packets on/off,
36 | : the bus. Deal with bus errors, timeouts etc.
38 saa7164_bus..() : Manage a read/write memory ring buffer in the
39 | : PCIe Address space.
41 | saa7164_fw...() : Load any frimware
42 | | : direct into the device
44 <- ----------------- PCIe address space -------------------- ->
47 #include <linux/pci.h>
48 #include <linux/i2c.h>
49 #include <linux/i2c-algo-bit.h>
50 #include <linux/kdev_t.h>
51 #include <linux/version.h>
52 #include <linux/mutex.h>
53 #include <linux/crc32.h>
55 #include <media/tuner.h>
56 #include <media/tveeprom.h>
57 #include <media/videobuf-dma-sg.h>
58 #include <media/videobuf-dvb.h>
59 #include <linux/smp_lock.h>
60 #include <dvb_demux.h>
61 #include <dvb_frontend.h>
65 #include <media/v4l2-common.h>
66 #include <media/v4l2-ioctl.h>
67 #include <media/v4l2-chip-ident.h>
69 #include "saa7164-reg.h"
70 #include "saa7164-types.h"
72 #define SAA7164_MAXBOARDS 8
75 #define SAA7164_BOARD_NOAUTO UNSET
76 #define SAA7164_BOARD_UNKNOWN 0
77 #define SAA7164_BOARD_UNKNOWN_REV2 1
78 #define SAA7164_BOARD_UNKNOWN_REV3 2
79 #define SAA7164_BOARD_HAUPPAUGE_HVR2250 3
80 #define SAA7164_BOARD_HAUPPAUGE_HVR2200 4
81 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5
82 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6
83 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7
84 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8
86 #define SAA7164_MAX_UNITS 8
87 #define SAA7164_TS_NUMBER_OF_LINES 312
88 #define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */
89 #define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */
91 /* Port related defines */
92 #define SAA7164_PORT_TS1 (0)
93 #define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1)
94 #define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1)
95 #define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1)
96 #define SAA7164_MAX_PORTS (SAA7164_PORT_ENC2 + 1)
100 #define DBGLVL_I2C 16
101 #define DBGLVL_API 32
102 #define DBGLVL_CMD 64
103 #define DBGLVL_BUS 128
104 #define DBGLVL_IRQ 256
105 #define DBGLVL_BUF 512
106 #define DBGLVL_ENC 1024
108 #define SAA7164_NORMS ( V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_443 )
111 SAA7164_MPEG_UNDEFINED = 0,
113 SAA7164_MPEG_ENCODER,
116 enum saa7164_i2c_bus_nr {
117 SAA7164_I2C_BUS_0 = 0,
122 enum saa7164_buffer_flags {
123 SAA7164_BUFFER_UNDEFINED = 0,
129 enum saa7164_unit_type {
130 SAA7164_UNIT_UNDEFINED = 0,
131 SAA7164_UNIT_DIGITAL_DEMODULATOR,
132 SAA7164_UNIT_ANALOG_DEMODULATOR,
135 SAA7164_UNIT_ZILOG_IRBLASTER,
136 SAA7164_UNIT_ENCODER,
139 /* The PCIe bridge doesn't grant direct access to i2c.
140 * Instead, you address i2c devices using a uniqely
141 * allocated 'unitid' value via a messaging API. This
142 * is a problem. The kernel and existing demod/tuner
143 * drivers expect to talk 'i2c', so we have to maintain
144 * a translation layer, and a series of functions to
145 * convert i2c bus + device address into a unit id.
147 struct saa7164_unit {
148 enum saa7164_unit_type type;
151 enum saa7164_i2c_bus_nr i2c_bus_nr;
156 struct saa7164_board {
158 enum port_t porta, portb, portc, portd;
160 SAA7164_CHIP_UNDEFINED = 0,
164 struct saa7164_unit unit[SAA7164_MAX_UNITS];
167 struct saa7164_subid {
174 struct saa7164_port *port;
177 atomic_t v4l_reading;
180 struct saa7164_histogram_bucket {
186 struct saa7164_histogram {
188 struct saa7164_histogram_bucket counter1[64];
191 struct saa7164_user_buffer {
192 struct list_head list;
202 struct saa7164_fw_status {
204 /* RISC Core details */
212 /* Firmware version */
222 struct dvb_adapter adapter;
223 struct dvb_frontend *frontend;
224 struct dvb_demux demux;
225 struct dmxdev dmxdev;
226 struct dmx_frontend fe_hw;
227 struct dmx_frontend fe_mem;
233 struct saa7164_dev *dev;
235 enum saa7164_i2c_bus_nr nr;
238 struct i2c_adapter i2c_adap;
239 struct i2c_algo_bit_data i2c_algo;
240 struct i2c_client i2c_client;
244 struct saa7164_ctrl {
245 struct v4l2_queryctrl v;
248 struct saa7164_tvnorm {
255 struct saa7164_encoder_params {
256 struct saa7164_tvnorm encodernorm;
260 u32 bitrate; /* bps */
261 u32 bitrate_peak; /* bps */
263 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
265 u32 audio_sampling_freq;
274 struct saa7164_buffer {
275 struct list_head list;
277 /* Note of which h/w buffer list index position we occupy */
280 struct saa7164_port *port;
282 /* Hardware Specific */
283 /* PCI Memory allocations */
284 enum saa7164_buffer_flags flags; /* Free, Busy, Full */
286 /* A block of page align PCI memory */
287 u32 pci_size; /* PCI allocation size in bytes */
288 u64 __iomem *cpu; /* Virtual address */
289 dma_addr_t dma; /* Physical address */
290 u32 crc; /* Checksum for the entire buffer data */
292 /* A page table that splits the block into a number of entries */
293 u32 pt_size; /* PCI allocation size in bytes */
294 u64 __iomem *pt_cpu; /* Virtual address */
295 dma_addr_t pt_dma; /* Physical address */
302 struct saa7164_port {
304 struct saa7164_dev *dev;
308 /* --- Generic port attributes --- */
310 /* HW stream parameters */
311 tmHWStreamParameters_t hw_streamingparams;
313 /* DMA configuration values, is seeded during initialization */
314 tmComResDMATermDescrHeader_t hwcfg;
316 /* hardware specific registers */
325 u32 numpte; /* Number of entries in array, only valid in head */
327 struct mutex dmaqueue_lock;
328 struct saa7164_buffer dmaqueue;
330 u64 last_irq_msecs, last_svc_msecs;
331 u64 last_irq_msecs_diff, last_svc_msecs_diff;
332 u32 last_irq_wp, last_svc_wp;
333 u32 last_irq_rp, last_svc_rp;
334 u64 last_irq_svc_msecs_diff;
335 u64 last_read_msecs, last_read_msecs_diff;
336 u64 last_poll_msecs, last_poll_msecs_diff;
338 struct saa7164_histogram irq_interval;
339 struct saa7164_histogram svc_interval;
340 struct saa7164_histogram irq_svc_interval;
341 struct saa7164_histogram read_interval;
342 struct saa7164_histogram poll_interval;
344 /* --- DVB Transport Specific --- */
345 struct saa7164_dvb dvb;
347 /* --- Encoder/V4L related attributes --- */
349 /* Defaults established in saa7164-encoder.c */
350 struct saa7164_tvnorm encodernorm;
368 tmComResAFeatureDescrHeader_t audfeat;
369 tmComResEncoderDescrHeader_t encunit;
370 tmComResProcDescrHeader_t vidproc;
371 tmComResExtDevDescrHeader_t ifunit;
372 tmComResTunerDescrHeader_t tunerunit;
374 struct work_struct workenc;
377 struct saa7164_encoder_params encoder_params;
378 struct video_device *v4l_device;
379 atomic_t v4l_reader_count;
381 // struct mutex fops_lock;
383 struct saa7164_buffer list_buf_used;
384 struct saa7164_buffer list_buf_free;
385 wait_queue_head_t wait_read;
399 struct list_head devlist;
404 unsigned char pci_rev, pci_lat;
405 int pci_bus, pci_slot;
418 /* firmware status */
419 struct saa7164_fw_status fw_status;
421 tmComResHWDescr_t hwdesc;
422 tmComResInterfaceDescr_t intfdesc;
423 tmComResBusDescr_t busdesc;
425 tmComResBusInfo_t bus;
427 /* Interrupt status and ack registers */
431 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];
435 struct saa7164_i2c i2c_bus[3];
437 /* Transport related */
438 struct saa7164_port ports[ SAA7164_MAX_PORTS ];
440 /* Deferred command/api interrupts handling */
441 struct work_struct workcmd;
445 extern struct list_head saa7164_devlist;
446 extern unsigned int waitsecs;
447 extern unsigned int encoder_buffers;
449 /* ----------------------------------------------------------- */
451 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
452 void saa7164_dumphex16(struct saa7164_dev *dev, u8 *buf, int len);
453 void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
454 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
455 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
457 /* ----------------------------------------------------------- */
459 int saa7164_downloadfirmware(struct saa7164_dev *dev);
461 /* ----------------------------------------------------------- */
463 extern int saa7164_i2c_register(struct saa7164_i2c *bus);
464 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
465 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
466 unsigned int cmd, void *arg);
468 /* ----------------------------------------------------------- */
470 int saa7164_bus_setup(struct saa7164_dev *dev);
471 void saa7164_bus_dump(struct saa7164_dev *dev);
472 int saa7164_bus_set(struct saa7164_dev *dev, tmComResInfo_t* msg, void *buf);
473 int saa7164_bus_get(struct saa7164_dev *dev, tmComResInfo_t* msg,
474 void *buf, int peekonly);
476 /* ----------------------------------------------------------- */
478 int saa7164_cmd_send(struct saa7164_dev *dev,
479 u8 id, tmComResCmd_t command, u16 controlselector,
480 u16 size, void *buf);
481 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
482 int saa7164_irq_dequeue(struct saa7164_dev *dev);
484 /* ----------------------------------------------------------- */
486 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
487 int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
488 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
489 u32 datalen, u8 *data);
490 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
491 u32 datalen, u8 *data);
492 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
493 u32 datalen, u8 *data);
494 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
495 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
496 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
497 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
498 int saa7164_api_initialize_dif(struct saa7164_port *port);
499 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
500 int saa7164_api_set_encoder(struct saa7164_port *port);
501 int saa7164_api_get_encoder(struct saa7164_port *port);
502 int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
503 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
504 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
505 int saa7164_api_set_videomux(struct saa7164_port *port);
506 int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
507 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
508 int saa7164_api_set_audio_std(struct saa7164_port *port);
509 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
510 int saa7164_api_get_videomux(struct saa7164_port *port);
512 /* ----------------------------------------------------------- */
513 /* saa7164-cards.c */
514 extern struct saa7164_board saa7164_boards[];
515 extern const unsigned int saa7164_bcount;
517 extern struct saa7164_subid saa7164_subids[];
518 extern const unsigned int saa7164_idcount;
520 extern void saa7164_card_list(struct saa7164_dev *dev);
521 extern void saa7164_gpio_setup(struct saa7164_dev *dev);
522 extern void saa7164_card_setup(struct saa7164_dev *dev);
524 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
525 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
526 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
528 /* ----------------------------------------------------------- */
530 extern int saa7164_dvb_register(struct saa7164_port *port);
531 extern int saa7164_dvb_unregister(struct saa7164_port *port);
533 /* ----------------------------------------------------------- */
534 /* saa7164-buffer.c */
535 extern struct saa7164_buffer *saa7164_buffer_alloc(
536 struct saa7164_port *port, u32 len);
537 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
538 extern void saa7164_buffer_display(struct saa7164_buffer *buf);
539 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
540 extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
541 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
542 struct saa7164_dev *dev, u32 len);
543 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
544 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
546 /* ----------------------------------------------------------- */
547 /* saa7164-encoder.c */
548 int saa7164_encoder_register(struct saa7164_port *port);
549 void saa7164_encoder_unregister(struct saa7164_port *port);
551 /* ----------------------------------------------------------- */
553 extern unsigned int saa_debug;
554 #define dprintk(level, fmt, arg...)\
555 do { if (saa_debug & level)\
556 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
559 #define log_warn(fmt, arg...)\
561 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
564 #define log_err(fmt, arg...)\
566 printk(KERN_ERROR "%s: " fmt, dev->name, ## arg);\
569 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
570 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
573 #define saa7164_readb(reg) readl(dev->bmmio + (reg))
574 #define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))