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saa7110.c


products/Sources/formale Sprachen/C/Linux/drivers/media/i2c/saa7110.c

// SPDX-License-Identifier: GPL-2.0-or-later /* * saa7110 - Philips SAA7110(A) video decoder driver * * Copyright (C) 1998 Pauline Middelink * * Copyright (C) 1999 Wolfgang Scherr * Copyright (C) 2000 Serguei Miridonov * - some corrections for Pinnacle Systems Inc. DC10plus card. * * Changes by Ronald Bultje * - moved over to linux>=2.4.x i2c protocol (1/1/2003) */ #include #include #include #include #include #include #include #include #include #include #include MODULE_DESCRIPTION("Philips SAA7110 video decoder driver"); MODULE_AUTHOR("Pauline Middelink"); MODULE_LICENSE("GPL"); static int debug; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0-1)"); #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */ #define SAA7110_MAX_OUTPUT 1 /* 1 YUV */ #define SAA7110_NR_REG 0x35 struct saa7110 { struct v4l2_subdev sd; struct v4l2_ctrl_handler hdl; u8 reg[SAA7110_NR_REG]; v4l2_std_id norm; int input; int enable; wait_queue_head_t wq; }; static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd) { return container_of(sd, struct saa7110, sd); } static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) { return &container_of(ctrl->handler, struct saa7110, hdl)->sd; } /* ----------------------------------------------------------------------- */ /* I2C support functions */ /* ----------------------------------------------------------------------- */ static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa7110 *decoder = to_saa7110(sd); decoder->reg[reg] = value; return i2c_smbus_write_byte_data(client, reg, value); } static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa7110 *decoder = to_saa7110(sd); int ret = -1; u8 reg = *data; /* first register to write to */ /* Sanity check */ if (reg + (len - 1) > SAA7110_NR_REG) return ret; /* the saa7110 has an autoincrement function, use it if * the adapter understands raw I2C */ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { ret = i2c_master_send(client, data, len); /* Cache the written data */ memcpy(decoder->reg + reg, data + 1, len - 1); } else { for (++data, --len; len; len--) { ret = saa7110_write(sd, reg++, *data++); if (ret < 0) break; } } return ret; } static inline int saa7110_read(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_read_byte(client); } /* ----------------------------------------------------------------------- */ /* SAA7110 functions */ /* ----------------------------------------------------------------------- */ #define FRESP_06H_COMPST 0x03 /*0x13*/ #define FRESP_06H_SVIDEO 0x83 /*0xC0*/ static int saa7110_selmux(struct v4l2_subdev *sd, int chan) { static const unsigned char modes[9][8] = { /* mode 0 */ {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03, 0x44, 0x75, 0x16}, /* mode 1 */ {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03, 0x44, 0x75, 0x16}, /* mode 2 */ {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03, 0x60, 0xB5, 0x05}, /* mode 3 */ {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03, 0x60, 0xB5, 0x05}, /* mode 4 */ {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83, 0x60, 0xB5, 0x03}, /* mode 5 */ {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83, 0x60, 0xB5, 0x03}, /* mode 6 */ {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3, 0x44, 0x75, 0x12}, /* mode 7 */ {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13, 0x60, 0xB5, 0x14}, /* mode 8 */ {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23, 0x44, 0x75, 0x21} }; struct saa7110 *decoder = to_saa7110(sd); const unsigned char *ptr = modes[chan]; saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */ saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */ saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */ saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */ saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */ saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */ saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */ saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */ decoder->input = chan; return 0; } static const unsigned char initseq[1 + SAA7110_NR_REG] = { 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00, /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90, /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA, /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F, /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C, /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02 }; static v4l2_std_id determine_norm(struct v4l2_subdev *sd) { DEFINE_WAIT(wait); struct saa7110 *decoder = to_saa7110(sd); int status; /* mode changed, start automatic detection */ saa7110_write_block(sd, initseq, sizeof(initseq)); saa7110_selmux(sd, decoder->input); prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(msecs_to_jiffies(250)); finish_wait(&decoder->wq, &wait); status = saa7110_read(sd); if (status & 0x40) { v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status); return V4L2_STD_UNKNOWN; } if ((status & 3) == 0) { saa7110_write(sd, 0x06, 0x83); if (status & 0x20) { v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status); /*saa7110_write(sd,0x2E,0x81);*/ return V4L2_STD_NTSC; } v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status); /*saa7110_write(sd,0x2E,0x9A);*/ return V4L2_STD_PAL; } /*saa7110_write(sd,0x06,0x03);*/ if (status & 0x20) { /* 60Hz */ v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status); saa7110_write(sd, 0x0D, 0x86); saa7110_write(sd, 0x0F, 0x50); saa7110_write(sd, 0x11, 0x2C); /*saa7110_write(sd,0x2E,0x81);*/ return V4L2_STD_NTSC; } /* 50Hz -> PAL/SECAM */ saa7110_write(sd, 0x0D, 0x86); saa7110_write(sd, 0x0F, 0x10); saa7110_write(sd, 0x11, 0x59); /*saa7110_write(sd,0x2E,0x9A);*/ prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(msecs_to_jiffies(250)); finish_wait(&decoder->wq, &wait); status = saa7110_read(sd); if ((status & 0x03) == 0x01) { v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status); saa7110_write(sd, 0x0D, 0x87); return V4L2_STD_SECAM; } v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status); return V4L2_STD_PAL; } static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus) { struct saa7110 *decoder = to_saa7110(sd); int res = V4L2_IN_ST_NO_SIGNAL; int status = saa7110_read(sd); v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n", status, (unsigned long long)decoder->norm); if (!(status & 0x40)) res = 0; if (!(status & 0x03)) res |= V4L2_IN_ST_NO_COLOR; *pstatus = res; return 0; } static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) { *std &= determine_norm(sd); return 0; } static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std) { struct saa7110 *decoder = to_saa7110(sd); if (decoder->norm != std) { decoder->norm = std; /*saa7110_write(sd, 0x06, 0x03);*/ if (std & V4L2_STD_NTSC) { saa7110_write(sd, 0x0D, 0x86); saa7110_write(sd, 0x0F, 0x50); saa7110_write(sd, 0x11, 0x2C); /*saa7110_write(sd, 0x2E, 0x81);*/ v4l2_dbg(1, debug, sd, "switched to NTSC\n"); } else if (std & V4L2_STD_PAL) { saa7110_write(sd, 0x0D, 0x86); saa7110_write(sd, 0x0F, 0x10); saa7110_write(sd, 0x11, 0x59); /*saa7110_write(sd, 0x2E, 0x9A);*/ v4l2_dbg(1, debug, sd, "switched to PAL\n"); } else if (std & V4L2_STD_SECAM) { saa7110_write(sd, 0x0D, 0x87); saa7110_write(sd, 0x0F, 0x10); saa7110_write(sd, 0x11, 0x59); /*saa7110_write(sd, 0x2E, 0x9A);*/ v4l2_dbg(1, debug, sd, "switched to SECAM\n"); } else { return -EINVAL; } } return 0; } static int saa7110_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { struct saa7110 *decoder = to_saa7110(sd); if (input >= SAA7110_MAX_INPUT) { v4l2_dbg(1, debug, sd, "input=%d not available\n", input); return -EINVAL; } if (decoder->input != input) { saa7110_selmux(sd, input); v4l2_dbg(1, debug, sd, "switched to input=%d\n", input); } return 0; } static int saa7110_s_stream(struct v4l2_subdev *sd, int enable) { struct saa7110 *decoder = to_saa7110(sd); if (decoder->enable != enable) { decoder->enable = enable; saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80); v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off"); } return 0; } static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: saa7110_write(sd, 0x19, ctrl->val); break; case V4L2_CID_CONTRAST: saa7110_write(sd, 0x13, ctrl->val); break; case V4L2_CID_SATURATION: saa7110_write(sd, 0x12, ctrl->val); break; case V4L2_CID_HUE: saa7110_write(sd, 0x07, ctrl->val); break; default: return -EINVAL; } return 0; } /* ----------------------------------------------------------------------- */ static const struct v4l2_ctrl_ops saa7110_ctrl_ops = { .s_ctrl = saa7110_s_ctrl, }; static const struct v4l2_subdev_video_ops saa7110_video_ops = { .s_std = saa7110_s_std, .s_routing = saa7110_s_routing, .s_stream = saa7110_s_stream, .querystd = saa7110_querystd, .g_input_status = saa7110_g_input_status, }; static const struct v4l2_subdev_ops saa7110_ops = { .video = &saa7110_video_ops, }; /* ----------------------------------------------------------------------- */ static int saa7110_probe(struct i2c_client *client) { struct saa7110 *decoder; struct v4l2_subdev *sd; int rv; /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) return -ENODEV; v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL); if (!decoder) return -ENOMEM; sd = &decoder->sd; v4l2_i2c_subdev_init(sd, client, &saa7110_ops); decoder->norm = V4L2_STD_PAL; decoder->input = 0; decoder->enable = 1; v4l2_ctrl_handler_init(&decoder->hdl, 2); v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, V4L2_CID_CONTRAST, 0, 127, 1, 64); v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, V4L2_CID_SATURATION, 0, 127, 1, 64); v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops, V4L2_CID_HUE, -128, 127, 1, 0); sd->ctrl_handler = &decoder->hdl; if (decoder->hdl.error) { int err = decoder->hdl.error; v4l2_ctrl_handler_free(&decoder->hdl); return err; } v4l2_ctrl_handler_setup(&decoder->hdl); init_waitqueue_head(&decoder->wq); rv = saa7110_write_block(sd, initseq, sizeof(initseq)); if (rv < 0) { v4l2_dbg(1, debug, sd, "init status %d\n", rv); } else { int ver, status; saa7110_write(sd, 0x21, 0x10); saa7110_write(sd, 0x0e, 0x18); saa7110_write(sd, 0x0D, 0x04); ver = saa7110_read(sd); saa7110_write(sd, 0x0D, 0x06); /*mdelay(150);*/ status = saa7110_read(sd); v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n", ver, status); saa7110_write(sd, 0x0D, 0x86); saa7110_write(sd, 0x0F, 0x10); saa7110_write(sd, 0x11, 0x59); /*saa7110_write(sd, 0x2E, 0x9A);*/ } /*saa7110_selmux(sd,0);*/ /*determine_norm(sd);*/ /* setup and implicit mode 0 select has been performed */ return 0; } static void saa7110_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct saa7110 *decoder = to_saa7110(sd); v4l2_device_unregister_subdev(sd); v4l2_ctrl_handler_free(&decoder->hdl); } /* ----------------------------------------------------------------------- */ static const struct i2c_device_id saa7110_id[] = { { "saa7110" }, { } }; MODULE_DEVICE_TABLE(i2c, saa7110_id); static struct i2c_driver saa7110_driver = { .driver = { .name = "saa7110", }, .probe = saa7110_probe, .remove = saa7110_remove, .id_table = saa7110_id, }; module_i2c_driver(saa7110_driver);

                                                                                                                                                                                                                                                                                                                                                                                                     

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