/* * saa7110 - Philips SAA7110(A) video decoder driver * * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl> * * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> * - some corrections for Pinnacle Systems Inc. DC10plus card. * * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> * - moved over to linux>=2.4.x i2c protocol (1/1/2003) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> #include <linux/init.h> #include <linux/types.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/wait.h> #include <asm/io.h> #include <asm/uaccess.h> MODULE_DESCRIPTION("Philips SAA7110 video decoder driver"); MODULE_AUTHOR("Pauline Middelink"); MODULE_LICENSE("GPL"); #include <linux/i2c.h> #define I2C_NAME(s) (s)->name #include <linux/videodev.h> #include <media/v4l2-common.h> #include <linux/video_decoder.h> static int debug = 0; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0-1)"); #define dprintk(num, format, args...) \ do { \ if (debug >= num) \ printk(format, ##args); \ } while (0) #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */ #define SAA7110_MAX_OUTPUT 0 /* its a decoder only */ #define I2C_SAA7110 0x9C /* or 0x9E */ #define SAA7110_NR_REG 0x35 struct saa7110 { u8 reg[SAA7110_NR_REG]; int norm; int input; int enable; int bright; int contrast; int hue; int sat; wait_queue_head_t wq; }; /* ----------------------------------------------------------------------- */ /* I2C support functions */ /* ----------------------------------------------------------------------- */ static int saa7110_write (struct i2c_client *client, u8 reg, u8 value) { struct saa7110 *decoder = i2c_get_clientdata(client); decoder->reg[reg] = value; return i2c_smbus_write_byte_data(client, reg, value); } static int saa7110_write_block (struct i2c_client *client, const u8 *data, unsigned int len) { 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)) { struct saa7110 *decoder = i2c_get_clientdata(client); 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--) { if ((ret = saa7110_write(client, reg++, *data++)) < 0) break; } } return ret; } static inline int saa7110_read (struct i2c_client *client) { 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 i2c_client *client, 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 = i2c_get_clientdata(client); const unsigned char *ptr = modes[chan]; saa7110_write(client, 0x06, ptr[0]); /* Luminance control */ saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */ saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */ saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */ saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */ saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */ saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */ saa7110_write(client, 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 int determine_norm (struct i2c_client *client) { DEFINE_WAIT(wait); struct saa7110 *decoder = i2c_get_clientdata(client); int status; /* mode changed, start automatic detection */ saa7110_write_block(client, initseq, sizeof(initseq)); saa7110_selmux(client, decoder->input); prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(HZ/4); finish_wait(&decoder->wq, &wait); status = saa7110_read(client); if (status & 0x40) { dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n", I2C_NAME(client), status); return decoder->norm; // no change } if ((status & 3) == 0) { saa7110_write(client, 0x06, 0x83); if (status & 0x20) { dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC/no color)\n", I2C_NAME(client), status); //saa7110_write(client,0x2E,0x81); return VIDEO_MODE_NTSC; } dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n", I2C_NAME(client), status); //saa7110_write(client,0x2E,0x9A); return VIDEO_MODE_PAL; } //saa7110_write(client,0x06,0x03); if (status & 0x20) { /* 60Hz */ dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n", I2C_NAME(client), status); saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x50); saa7110_write(client, 0x11, 0x2C); //saa7110_write(client,0x2E,0x81); return VIDEO_MODE_NTSC; } /* 50Hz -> PAL/SECAM */ saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x10); saa7110_write(client, 0x11, 0x59); //saa7110_write(client,0x2E,0x9A); prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(HZ/4); finish_wait(&decoder->wq, &wait); status = saa7110_read(client); if ((status & 0x03) == 0x01) { dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n", I2C_NAME(client), status); saa7110_write(client, 0x0D, 0x87); return VIDEO_MODE_SECAM; } dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client), status); return VIDEO_MODE_PAL; } static int saa7110_command (struct i2c_client *client, unsigned int cmd, void *arg) { struct saa7110 *decoder = i2c_get_clientdata(client); int v; switch (cmd) { case 0: //saa7110_write_block(client, initseq, sizeof(initseq)); break; case DECODER_GET_CAPABILITIES: { struct video_decoder_capability *dc = arg; dc->flags = VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC | VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO; dc->inputs = SAA7110_MAX_INPUT; dc->outputs = SAA7110_MAX_OUTPUT; } break; case DECODER_GET_STATUS: { int status; int res = 0; status = saa7110_read(client); dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n", I2C_NAME(client), status, decoder->norm); if (!(status & 0x40)) res |= DECODER_STATUS_GOOD; if (status & 0x03) res |= DECODER_STATUS_COLOR; switch (decoder->norm) { case VIDEO_MODE_NTSC: res |= DECODER_STATUS_NTSC; break; case VIDEO_MODE_PAL: res |= DECODER_STATUS_PAL; break; case VIDEO_MODE_SECAM: res |= DECODER_STATUS_SECAM; break; } *(int *) arg = res; } break; case DECODER_SET_NORM: v = *(int *) arg; if (decoder->norm != v) { decoder->norm = v; //saa7110_write(client, 0x06, 0x03); switch (v) { case VIDEO_MODE_NTSC: saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x50); saa7110_write(client, 0x11, 0x2C); //saa7110_write(client, 0x2E, 0x81); dprintk(1, KERN_INFO "%s: switched to NTSC\n", I2C_NAME(client)); break; case VIDEO_MODE_PAL: saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x10); saa7110_write(client, 0x11, 0x59); //saa7110_write(client, 0x2E, 0x9A); dprintk(1, KERN_INFO "%s: switched to PAL\n", I2C_NAME(client)); break; case VIDEO_MODE_SECAM: saa7110_write(client, 0x0D, 0x87); saa7110_write(client, 0x0F, 0x10); saa7110_write(client, 0x11, 0x59); //saa7110_write(client, 0x2E, 0x9A); dprintk(1, KERN_INFO "%s: switched to SECAM\n", I2C_NAME(client)); break; case VIDEO_MODE_AUTO: dprintk(1, KERN_INFO "%s: TV standard detection...\n", I2C_NAME(client)); decoder->norm = determine_norm(client); *(int *) arg = decoder->norm; break; default: return -EPERM; } } break; case DECODER_SET_INPUT: v = *(int *) arg; if (v < 0 || v > SAA7110_MAX_INPUT) { dprintk(1, KERN_INFO "%s: input=%d not available\n", I2C_NAME(client), v); return -EINVAL; } if (decoder->input != v) { saa7110_selmux(client, v); dprintk(1, KERN_INFO "%s: switched to input=%d\n", I2C_NAME(client), v); } break; case DECODER_SET_OUTPUT: v = *(int *) arg; /* not much choice of outputs */ if (v != 0) return -EINVAL; break; case DECODER_ENABLE_OUTPUT: v = *(int *) arg; if (decoder->enable != v) { decoder->enable = v; saa7110_write(client, 0x0E, v ? 0x18 : 0x80); dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client), v ? "on" : "off"); } break; case DECODER_SET_PICTURE: { struct video_picture *pic = arg; if (decoder->bright != pic->brightness) { /* We want 0 to 255 we get 0-65535 */ decoder->bright = pic->brightness; saa7110_write(client, 0x19, decoder->bright >> 8); } if (decoder->contrast != pic->contrast) { /* We want 0 to 127 we get 0-65535 */ decoder->contrast = pic->contrast; saa7110_write(client, 0x13, decoder->contrast >> 9); } if (decoder->sat != pic->colour) { /* We want 0 to 127 we get 0-65535 */ decoder->sat = pic->colour; saa7110_write(client, 0x12, decoder->sat >> 9); } if (decoder->hue != pic->hue) { /* We want -128 to 127 we get 0-65535 */ decoder->hue = pic->hue; saa7110_write(client, 0x07, (decoder->hue >> 8) - 128); } } break; case DECODER_DUMP: for (v = 0; v < SAA7110_NR_REG; v += 16) { int j; dprintk(1, KERN_DEBUG "%s: %02x:", I2C_NAME(client), v); for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++) dprintk(1, " %02x", decoder->reg[v + j]); dprintk(1, "\n"); } break; default: dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n", cmd); return -EINVAL; } return 0; } /* ----------------------------------------------------------------------- */ /* * Generic i2c probe * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' */ static unsigned short normal_i2c[] = { I2C_SAA7110 >> 1, (I2C_SAA7110 >> 1) + 1, I2C_CLIENT_END }; static unsigned short ignore = I2C_CLIENT_END; static struct i2c_client_address_data addr_data = { .normal_i2c = normal_i2c, .probe = &ignore, .ignore = &ignore, }; static struct i2c_driver i2c_driver_saa7110; static int saa7110_detect_client (struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *client; struct saa7110 *decoder; int rv; dprintk(1, KERN_INFO "saa7110.c: detecting saa7110 client on address 0x%x\n", address << 1); /* Check if the adapter supports the needed features */ if (!i2c_check_functionality (adapter, I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) return 0; client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (client == 0) return -ENOMEM; client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7110; strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client))); decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL); if (decoder == 0) { kfree(client); return -ENOMEM; } decoder->norm = VIDEO_MODE_PAL; decoder->input = 0; decoder->enable = 1; decoder->bright = 32768; decoder->contrast = 32768; decoder->hue = 32768; decoder->sat = 32768; init_waitqueue_head(&decoder->wq); i2c_set_clientdata(client, decoder); rv = i2c_attach_client(client); if (rv) { kfree(client); kfree(decoder); return rv; } rv = saa7110_write_block(client, initseq, sizeof(initseq)); if (rv < 0) dprintk(1, KERN_ERR "%s_attach: init status %d\n", I2C_NAME(client), rv); else { int ver, status; saa7110_write(client, 0x21, 0x10); saa7110_write(client, 0x0e, 0x18); saa7110_write(client, 0x0D, 0x04); ver = saa7110_read(client); saa7110_write(client, 0x0D, 0x06); //mdelay(150); status = saa7110_read(client); dprintk(1, KERN_INFO "%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n", I2C_NAME(client), ver, client->addr << 1, status); saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x10); saa7110_write(client, 0x11, 0x59); //saa7110_write(client, 0x2E, 0x9A); } //saa7110_selmux(client,0); //determine_norm(client); /* setup and implicit mode 0 select has been performed */ return 0; } static int saa7110_attach_adapter (struct i2c_adapter *adapter) { dprintk(1, KERN_INFO "saa7110.c: starting probe for adapter %s (0x%x)\n", I2C_NAME(adapter), adapter->id); return i2c_probe(adapter, &addr_data, &saa7110_detect_client); } static int saa7110_detach_client (struct i2c_client *client) { struct saa7110 *decoder = i2c_get_clientdata(client); int err; err = i2c_detach_client(client); if (err) { return err; } kfree(decoder); kfree(client); return 0; } /* ----------------------------------------------------------------------- */ static struct i2c_driver i2c_driver_saa7110 = { .driver = { .name = "saa7110", }, .id = I2C_DRIVERID_SAA7110, .attach_adapter = saa7110_attach_adapter, .detach_client = saa7110_detach_client, .command = saa7110_command, }; static int __init saa7110_init (void) { return i2c_add_driver(&i2c_driver_saa7110); } static void __exit saa7110_exit (void) { i2c_del_driver(&i2c_driver_saa7110); } module_init(saa7110_init); module_exit(saa7110_exit);