624 lines
18 KiB
C
624 lines
18 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Driver for the NXP SAA7164 PCIe bridge
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*
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* Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
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*/
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/*
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Driver architecture
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*******************
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saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
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| : Standard Linux driver framework for creating
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| : exposing and managing interfaces to the rest
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| : of the kernel or userland. Also uses _fw.c to load
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| : firmware direct into the PCIe bus, bypassing layers.
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V
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saa7164_api..() : Translate kernel specific functions/features
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| : into command buffers.
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V
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saa7164_cmd..() : Manages the flow of command packets on/off,
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| : the bus. Deal with bus errors, timeouts etc.
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V
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saa7164_bus..() : Manage a read/write memory ring buffer in the
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| : PCIe Address space.
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| saa7164_fw...() : Load any frimware
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| | : direct into the device
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V V
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<- ----------------- PCIe address space -------------------- ->
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*/
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#include <linux/pci.h>
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#include <linux/i2c.h>
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#include <linux/kdev_t.h>
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#include <linux/mutex.h>
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#include <linux/crc32.h>
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#include <linux/kthread.h>
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#include <linux/freezer.h>
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#include <media/tuner.h>
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#include <media/tveeprom.h>
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#include <media/dvb_demux.h>
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#include <media/dvb_frontend.h>
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#include <media/dvb_net.h>
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#include <media/dvbdev.h>
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#include <media/dmxdev.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include "saa7164-reg.h"
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#include "saa7164-types.h"
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#define SAA7164_MAXBOARDS 8
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#define UNSET (-1U)
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#define SAA7164_BOARD_NOAUTO UNSET
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#define SAA7164_BOARD_UNKNOWN 0
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#define SAA7164_BOARD_UNKNOWN_REV2 1
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#define SAA7164_BOARD_UNKNOWN_REV3 2
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#define SAA7164_BOARD_HAUPPAUGE_HVR2250 3
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200 4
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6
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#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7
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#define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 9
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 10
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#define SAA7164_BOARD_HAUPPAUGE_HVR2255proto 11
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#define SAA7164_BOARD_HAUPPAUGE_HVR2255 12
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#define SAA7164_BOARD_HAUPPAUGE_HVR2205 13
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#define SAA7164_MAX_UNITS 8
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#define SAA7164_TS_NUMBER_OF_LINES 312
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#define SAA7164_PS_NUMBER_OF_LINES 256
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#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */
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#define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */
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#define SAA7164_MAX_VBI_BUFFERS 64
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/* Port related defines */
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#define SAA7164_PORT_TS1 (0)
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#define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1)
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#define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1)
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#define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1)
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#define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1)
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#define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1)
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#define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1)
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#define DBGLVL_FW 4
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#define DBGLVL_DVB 8
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#define DBGLVL_I2C 16
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#define DBGLVL_API 32
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#define DBGLVL_CMD 64
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#define DBGLVL_BUS 128
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#define DBGLVL_IRQ 256
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#define DBGLVL_BUF 512
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#define DBGLVL_ENC 1024
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#define DBGLVL_VBI 2048
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#define DBGLVL_THR 4096
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#define DBGLVL_CPU 8192
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#define SAA7164_NORMS \
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(V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)
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/* TV frequency range copied from tuner-core.c */
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#define SAA7164_TV_MIN_FREQ (44U * 16U)
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#define SAA7164_TV_MAX_FREQ (958U * 16U)
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enum port_t {
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SAA7164_MPEG_UNDEFINED = 0,
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SAA7164_MPEG_DVB,
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SAA7164_MPEG_ENCODER,
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SAA7164_MPEG_VBI,
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};
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enum saa7164_i2c_bus_nr {
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SAA7164_I2C_BUS_0 = 0,
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SAA7164_I2C_BUS_1,
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SAA7164_I2C_BUS_2,
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};
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enum saa7164_buffer_flags {
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SAA7164_BUFFER_UNDEFINED = 0,
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SAA7164_BUFFER_FREE,
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SAA7164_BUFFER_BUSY,
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SAA7164_BUFFER_FULL
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};
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enum saa7164_unit_type {
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SAA7164_UNIT_UNDEFINED = 0,
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SAA7164_UNIT_DIGITAL_DEMODULATOR,
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SAA7164_UNIT_ANALOG_DEMODULATOR,
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SAA7164_UNIT_TUNER,
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SAA7164_UNIT_EEPROM,
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SAA7164_UNIT_ZILOG_IRBLASTER,
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SAA7164_UNIT_ENCODER,
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};
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/* The PCIe bridge doesn't grant direct access to i2c.
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* Instead, you address i2c devices using a uniqely
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* allocated 'unitid' value via a messaging API. This
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* is a problem. The kernel and existing demod/tuner
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* drivers expect to talk 'i2c', so we have to maintain
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* a translation layer, and a series of functions to
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* convert i2c bus + device address into a unit id.
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*/
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struct saa7164_unit {
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enum saa7164_unit_type type;
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u8 id;
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char *name;
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enum saa7164_i2c_bus_nr i2c_bus_nr;
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u8 i2c_bus_addr;
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u8 i2c_reg_len;
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};
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struct saa7164_board {
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char *name;
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enum port_t porta, portb, portc,
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portd, porte, portf;
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enum {
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SAA7164_CHIP_UNDEFINED = 0,
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SAA7164_CHIP_REV2,
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SAA7164_CHIP_REV3,
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} chiprev;
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struct saa7164_unit unit[SAA7164_MAX_UNITS];
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};
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struct saa7164_subid {
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u16 subvendor;
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u16 subdevice;
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u32 card;
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};
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struct saa7164_encoder_fh {
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struct v4l2_fh fh;
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struct saa7164_port *port;
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atomic_t v4l_reading;
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};
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struct saa7164_vbi_fh {
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struct v4l2_fh fh;
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struct saa7164_port *port;
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atomic_t v4l_reading;
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};
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struct saa7164_histogram_bucket {
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u32 val;
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u32 count;
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u64 update_time;
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};
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struct saa7164_histogram {
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char name[32];
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struct saa7164_histogram_bucket counter1[64];
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};
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struct saa7164_user_buffer {
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struct list_head list;
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/* Attributes */
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u8 *data;
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u32 pos;
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u32 actual_size;
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u32 crc;
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};
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struct saa7164_fw_status {
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/* RISC Core details */
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u32 status;
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u32 mode;
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u32 spec;
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u32 inst;
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u32 cpuload;
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u32 remainheap;
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/* Firmware version */
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u32 version;
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u32 major;
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u32 sub;
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u32 rel;
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u32 buildnr;
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};
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struct saa7164_dvb {
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struct mutex lock;
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struct dvb_adapter adapter;
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struct dvb_frontend *frontend;
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struct dvb_demux demux;
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struct dmxdev dmxdev;
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struct dmx_frontend fe_hw;
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struct dmx_frontend fe_mem;
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struct dvb_net net;
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int feeding;
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};
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struct saa7164_i2c {
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struct saa7164_dev *dev;
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enum saa7164_i2c_bus_nr nr;
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/* I2C I/O */
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struct i2c_adapter i2c_adap;
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struct i2c_client i2c_client;
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u32 i2c_rc;
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};
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struct saa7164_tvnorm {
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char *name;
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v4l2_std_id id;
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};
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struct saa7164_encoder_params {
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struct saa7164_tvnorm encodernorm;
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u32 height;
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u32 width;
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u32 is_50hz;
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u32 bitrate; /* bps */
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u32 bitrate_peak; /* bps */
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u32 bitrate_mode;
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u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
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u32 audio_sampling_freq;
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u32 ctl_mute;
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u32 ctl_aspect;
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u32 refdist;
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u32 gop_size;
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};
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struct saa7164_vbi_params {
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struct saa7164_tvnorm encodernorm;
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u32 height;
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u32 width;
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u32 is_50hz;
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u32 bitrate; /* bps */
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u32 bitrate_peak; /* bps */
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u32 bitrate_mode;
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u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
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u32 audio_sampling_freq;
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u32 ctl_mute;
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u32 ctl_aspect;
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u32 refdist;
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u32 gop_size;
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};
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struct saa7164_port;
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struct saa7164_buffer {
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struct list_head list;
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/* Note of which h/w buffer list index position we occupy */
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int idx;
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struct saa7164_port *port;
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/* Hardware Specific */
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/* PCI Memory allocations */
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enum saa7164_buffer_flags flags; /* Free, Busy, Full */
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/* A block of page align PCI memory */
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u32 pci_size; /* PCI allocation size in bytes */
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u64 *cpu; /* Virtual address */
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dma_addr_t dma; /* Physical address */
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u32 crc; /* Checksum for the entire buffer data */
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/* A page table that splits the block into a number of entries */
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u32 pt_size; /* PCI allocation size in bytes */
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u64 *pt_cpu; /* Virtual address */
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dma_addr_t pt_dma; /* Physical address */
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/* Encoder fops */
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u32 pos;
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u32 actual_size;
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};
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struct saa7164_port {
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struct saa7164_dev *dev;
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enum port_t type;
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int nr;
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/* --- Generic port attributes --- */
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/* HW stream parameters */
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struct tmHWStreamParameters hw_streamingparams;
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/* DMA configuration values, is seeded during initialization */
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struct tmComResDMATermDescrHeader hwcfg;
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/* hardware specific registers */
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u32 bufcounter;
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u32 pitch;
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u32 bufsize;
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u32 bufoffset;
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u32 bufptr32l;
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u32 bufptr32h;
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u64 bufptr64;
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u32 numpte; /* Number of entries in array, only valid in head */
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struct mutex dmaqueue_lock;
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struct saa7164_buffer dmaqueue;
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u64 last_irq_msecs, last_svc_msecs;
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u64 last_irq_msecs_diff, last_svc_msecs_diff;
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u32 last_svc_wp;
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u32 last_svc_rp;
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u64 last_irq_svc_msecs_diff;
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u64 last_read_msecs, last_read_msecs_diff;
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u64 last_poll_msecs, last_poll_msecs_diff;
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struct saa7164_histogram irq_interval;
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struct saa7164_histogram svc_interval;
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struct saa7164_histogram irq_svc_interval;
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struct saa7164_histogram read_interval;
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struct saa7164_histogram poll_interval;
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/* --- DVB Transport Specific --- */
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struct saa7164_dvb dvb;
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struct i2c_client *i2c_client_demod;
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struct i2c_client *i2c_client_tuner;
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/* --- Encoder/V4L related attributes --- */
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/* Encoder */
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/* Defaults established in saa7164-encoder.c */
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struct saa7164_tvnorm encodernorm;
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struct v4l2_ctrl_handler ctrl_handler;
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v4l2_std_id std;
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u32 height;
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u32 width;
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u32 freq;
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u8 mux_input;
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u8 encoder_profile;
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u8 video_format;
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u8 audio_format;
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u8 video_resolution;
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u16 ctl_brightness;
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u16 ctl_contrast;
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u16 ctl_hue;
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u16 ctl_saturation;
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u16 ctl_sharpness;
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s8 ctl_volume;
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struct tmComResAFeatureDescrHeader audfeat;
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struct tmComResEncoderDescrHeader encunit;
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struct tmComResProcDescrHeader vidproc;
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struct tmComResExtDevDescrHeader ifunit;
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struct tmComResTunerDescrHeader tunerunit;
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struct work_struct workenc;
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/* V4L Encoder Video */
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struct saa7164_encoder_params encoder_params;
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struct video_device *v4l_device;
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atomic_t v4l_reader_count;
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struct saa7164_buffer list_buf_used;
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struct saa7164_buffer list_buf_free;
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wait_queue_head_t wait_read;
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/* V4L VBI */
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struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
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struct saa7164_vbi_params vbi_params;
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struct saa7164_port *enc_port;
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/* Debug */
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u32 sync_errors;
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u32 v_cc_errors;
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u32 a_cc_errors;
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u8 last_v_cc;
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u8 last_a_cc;
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u32 done_first_interrupt;
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};
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struct saa7164_dev {
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struct list_head devlist;
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atomic_t refcount;
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struct v4l2_device v4l2_dev;
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/* pci stuff */
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struct pci_dev *pci;
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unsigned char pci_rev, pci_lat;
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int pci_bus, pci_slot;
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u32 __iomem *lmmio;
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u8 __iomem *bmmio;
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u32 __iomem *lmmio2;
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u8 __iomem *bmmio2;
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int pci_irqmask;
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/* board details */
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int nr;
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int hwrevision;
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u32 board;
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char name[16];
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/* firmware status */
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struct saa7164_fw_status fw_status;
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u32 firmwareloaded;
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struct tmComResHWDescr hwdesc;
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struct tmComResInterfaceDescr intfdesc;
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struct tmComResBusDescr busdesc;
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struct tmComResBusInfo bus;
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/* Interrupt status and ack registers */
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u32 int_status;
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u32 int_ack;
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bool msi;
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struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];
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struct mutex lock;
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/* I2c related */
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struct saa7164_i2c i2c_bus[3];
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/* Transport related */
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struct saa7164_port ports[SAA7164_MAX_PORTS];
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/* Deferred command/api interrupts handling */
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struct work_struct workcmd;
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/* A kernel thread to monitor the firmware log, used
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* only in debug mode.
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*/
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struct task_struct *kthread;
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};
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extern struct list_head saa7164_devlist;
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extern unsigned int waitsecs;
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extern unsigned int encoder_buffers;
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extern unsigned int vbi_buffers;
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/* ----------------------------------------------------------- */
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/* saa7164-core.c */
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void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
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void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
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u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
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void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
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/* ----------------------------------------------------------- */
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/* saa7164-fw.c */
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int saa7164_downloadfirmware(struct saa7164_dev *dev);
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/* ----------------------------------------------------------- */
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/* saa7164-i2c.c */
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extern int saa7164_i2c_register(struct saa7164_i2c *bus);
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extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
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extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
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unsigned int cmd, void *arg);
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/* ----------------------------------------------------------- */
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/* saa7164-bus.c */
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int saa7164_bus_setup(struct saa7164_dev *dev);
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void saa7164_bus_dump(struct saa7164_dev *dev);
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int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
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void *buf);
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int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
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void *buf, int peekonly);
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/* ----------------------------------------------------------- */
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/* saa7164-cmd.c */
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int saa7164_cmd_send(struct saa7164_dev *dev,
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u8 id, enum tmComResCmd command, u16 controlselector,
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u16 size, void *buf);
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void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
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int saa7164_irq_dequeue(struct saa7164_dev *dev);
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/* ----------------------------------------------------------- */
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/* saa7164-api.c */
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int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
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int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
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int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
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u32 datalen, u8 *data);
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int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
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u32 datalen, u8 *data);
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int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
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u32 datalen, u8 *data);
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int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
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int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
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int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
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int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
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int saa7164_api_initialize_dif(struct saa7164_port *port);
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int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
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int saa7164_api_set_encoder(struct saa7164_port *port);
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int saa7164_api_get_encoder(struct saa7164_port *port);
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int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
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int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
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int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
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int saa7164_api_set_videomux(struct saa7164_port *port);
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int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
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int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
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int saa7164_api_set_audio_std(struct saa7164_port *port);
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int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
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int saa7164_api_get_videomux(struct saa7164_port *port);
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int saa7164_api_set_vbi_format(struct saa7164_port *port);
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int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
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int saa7164_api_collect_debug(struct saa7164_dev *dev);
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int saa7164_api_get_load_info(struct saa7164_dev *dev,
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struct tmFwInfoStruct *i);
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/* ----------------------------------------------------------- */
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/* saa7164-cards.c */
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extern struct saa7164_board saa7164_boards[];
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extern const unsigned int saa7164_bcount;
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extern struct saa7164_subid saa7164_subids[];
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extern const unsigned int saa7164_idcount;
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extern void saa7164_card_list(struct saa7164_dev *dev);
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extern void saa7164_gpio_setup(struct saa7164_dev *dev);
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extern void saa7164_card_setup(struct saa7164_dev *dev);
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extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
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extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
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extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
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/* ----------------------------------------------------------- */
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/* saa7164-dvb.c */
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extern int saa7164_dvb_register(struct saa7164_port *port);
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extern int saa7164_dvb_unregister(struct saa7164_port *port);
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/* ----------------------------------------------------------- */
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/* saa7164-buffer.c */
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extern struct saa7164_buffer *saa7164_buffer_alloc(
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struct saa7164_port *port, u32 len);
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extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
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extern void saa7164_buffer_display(struct saa7164_buffer *buf);
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extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
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extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
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extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
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struct saa7164_dev *dev, u32 len);
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extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
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extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
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/* ----------------------------------------------------------- */
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/* saa7164-encoder.c */
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int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);
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int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);
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int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);
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int saa7164_g_input(struct saa7164_port *port, unsigned int *i);
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int saa7164_s_input(struct saa7164_port *port, unsigned int i);
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int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
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int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);
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int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);
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int saa7164_s_frequency(struct saa7164_port *port,
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const struct v4l2_frequency *f);
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int saa7164_encoder_register(struct saa7164_port *port);
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void saa7164_encoder_unregister(struct saa7164_port *port);
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/* ----------------------------------------------------------- */
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/* saa7164-vbi.c */
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int saa7164_vbi_register(struct saa7164_port *port);
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void saa7164_vbi_unregister(struct saa7164_port *port);
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/* ----------------------------------------------------------- */
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extern unsigned int crc_checking;
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extern unsigned int saa_debug;
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#define dprintk(level, fmt, arg...)\
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do { if (saa_debug & level)\
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printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
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} while (0)
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#define log_warn(fmt, arg...)\
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do { \
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printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
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} while (0)
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#define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
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#define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
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#define saa7164_readb(reg) readl(dev->bmmio + (reg))
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#define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))
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