/* * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 * * Copyright (C) 2002 Maxim Yevtyushkin * * Based on adv7176 driver by: * * Copyright (C) 1998 Dave Perks * 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) * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver"); MODULE_AUTHOR("Maxim Yevtyushkin"); MODULE_LICENSE("GPL"); #include #define I2C_NAME(x) (x)->name #include 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) /* ----------------------------------------------------------------------- */ struct adv7170 { unsigned char reg[128]; int norm; int input; int enable; int bright; int contrast; int hue; int sat; }; #define I2C_ADV7170 0xd4 #define I2C_ADV7171 0x54 static char adv7170_name[] = "adv7170"; static char adv7171_name[] = "adv7171"; static char *inputs[] = { "pass_through", "play_back" }; static char *norms[] = { "PAL", "NTSC" }; /* ----------------------------------------------------------------------- */ static inline int adv7170_write (struct i2c_client *client, u8 reg, u8 value) { struct adv7170 *encoder = i2c_get_clientdata(client); encoder->reg[reg] = value; return i2c_smbus_write_byte_data(client, reg, value); } static inline int adv7170_read (struct i2c_client *client, u8 reg) { return i2c_smbus_read_byte_data(client, reg); } static int adv7170_write_block (struct i2c_client *client, const u8 *data, unsigned int len) { int ret = -1; u8 reg; /* the adv7170 has an autoincrement function, use it if * the adapter understands raw I2C */ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { /* do raw I2C, not smbus compatible */ struct adv7170 *encoder = i2c_get_clientdata(client); struct i2c_msg msg; u8 block_data[32]; msg.addr = client->addr; msg.flags = 0; while (len >= 2) { msg.buf = (char *) block_data; msg.len = 0; block_data[msg.len++] = reg = data[0]; do { block_data[msg.len++] = encoder->reg[reg++] = data[1]; len -= 2; data += 2; } while (len >= 2 && data[0] == reg && msg.len < 32); if ((ret = i2c_transfer(client->adapter, &msg, 1)) < 0) break; } } else { /* do some slow I2C emulation kind of thing */ while (len >= 2) { reg = *data++; if ((ret = adv7170_write(client, reg, *data++)) < 0) break; len -= 2; } } return ret; } /* ----------------------------------------------------------------------- */ // Output filter: S-Video Composite #define MR050 0x11 //0x09 #define MR060 0x14 //0x0c //--------------------------------------------------------------------------- #define TR0MODE 0x4c #define TR0RST 0x80 #define TR1CAPT 0x00 #define TR1PLAY 0x00 static const unsigned char init_NTSC[] = { 0x00, 0x10, // MR0 0x01, 0x20, // MR1 0x02, 0x0e, // MR2 RTC control: bits 2 and 1 0x03, 0x80, // MR3 0x04, 0x30, // MR4 0x05, 0x00, // Reserved 0x06, 0x00, // Reserved 0x07, TR0MODE, // TM0 0x08, TR1CAPT, // TM1 0x09, 0x16, // Fsc0 0x0a, 0x7c, // Fsc1 0x0b, 0xf0, // Fsc2 0x0c, 0x21, // Fsc3 0x0d, 0x00, // Subcarrier Phase 0x0e, 0x00, // Closed Capt. Ext 0 0x0f, 0x00, // Closed Capt. Ext 1 0x10, 0x00, // Closed Capt. 0 0x11, 0x00, // Closed Capt. 1 0x12, 0x00, // Pedestal Ctl 0 0x13, 0x00, // Pedestal Ctl 1 0x14, 0x00, // Pedestal Ctl 2 0x15, 0x00, // Pedestal Ctl 3 0x16, 0x00, // CGMS_WSS_0 0x17, 0x00, // CGMS_WSS_1 0x18, 0x00, // CGMS_WSS_2 0x19, 0x00, // Teletext Ctl }; static const unsigned char init_PAL[] = { 0x00, 0x71, // MR0 0x01, 0x20, // MR1 0x02, 0x0e, // MR2 RTC control: bits 2 and 1 0x03, 0x80, // MR3 0x04, 0x30, // MR4 0x05, 0x00, // Reserved 0x06, 0x00, // Reserved 0x07, TR0MODE, // TM0 0x08, TR1CAPT, // TM1 0x09, 0xcb, // Fsc0 0x0a, 0x8a, // Fsc1 0x0b, 0x09, // Fsc2 0x0c, 0x2a, // Fsc3 0x0d, 0x00, // Subcarrier Phase 0x0e, 0x00, // Closed Capt. Ext 0 0x0f, 0x00, // Closed Capt. Ext 1 0x10, 0x00, // Closed Capt. 0 0x11, 0x00, // Closed Capt. 1 0x12, 0x00, // Pedestal Ctl 0 0x13, 0x00, // Pedestal Ctl 1 0x14, 0x00, // Pedestal Ctl 2 0x15, 0x00, // Pedestal Ctl 3 0x16, 0x00, // CGMS_WSS_0 0x17, 0x00, // CGMS_WSS_1 0x18, 0x00, // CGMS_WSS_2 0x19, 0x00, // Teletext Ctl }; static int adv7170_command (struct i2c_client *client, unsigned int cmd, void * arg) { struct adv7170 *encoder = i2c_get_clientdata(client); switch (cmd) { case 0: #if 0 /* This is just for testing!!! */ adv7170_write_block(client, init_common, sizeof(init_common)); adv7170_write(client, 0x07, TR0MODE | TR0RST); adv7170_write(client, 0x07, TR0MODE); #endif break; case ENCODER_GET_CAPABILITIES: { struct video_encoder_capability *cap = arg; cap->flags = VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC; cap->inputs = 2; cap->outputs = 1; } break; case ENCODER_SET_NORM: { int iarg = *(int *) arg; dprintk(1, KERN_DEBUG "%s_command: set norm %d", I2C_NAME(client), iarg); switch (iarg) { case VIDEO_MODE_NTSC: adv7170_write_block(client, init_NTSC, sizeof(init_NTSC)); if (encoder->input == 0) adv7170_write(client, 0x02, 0x0e); // Enable genlock adv7170_write(client, 0x07, TR0MODE | TR0RST); adv7170_write(client, 0x07, TR0MODE); break; case VIDEO_MODE_PAL: adv7170_write_block(client, init_PAL, sizeof(init_PAL)); if (encoder->input == 0) adv7170_write(client, 0x02, 0x0e); // Enable genlock adv7170_write(client, 0x07, TR0MODE | TR0RST); adv7170_write(client, 0x07, TR0MODE); break; default: dprintk(1, KERN_ERR "%s: illegal norm: %d\n", I2C_NAME(client), iarg); return -EINVAL; } dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client), norms[iarg]); encoder->norm = iarg; } break; case ENCODER_SET_INPUT: { int iarg = *(int *) arg; /* RJ: *iarg = 0: input is from decoder *iarg = 1: input is from ZR36060 *iarg = 2: color bar */ dprintk(1, KERN_DEBUG "%s_command: set input from %s\n", I2C_NAME(client), iarg == 0 ? "decoder" : "ZR36060"); switch (iarg) { case 0: adv7170_write(client, 0x01, 0x20); adv7170_write(client, 0x08, TR1CAPT); /* TR1 */ adv7170_write(client, 0x02, 0x0e); // Enable genlock adv7170_write(client, 0x07, TR0MODE | TR0RST); adv7170_write(client, 0x07, TR0MODE); //udelay(10); break; case 1: adv7170_write(client, 0x01, 0x00); adv7170_write(client, 0x08, TR1PLAY); /* TR1 */ adv7170_write(client, 0x02, 0x08); adv7170_write(client, 0x07, TR0MODE | TR0RST); adv7170_write(client, 0x07, TR0MODE); //udelay(10); break; default: dprintk(1, KERN_ERR "%s: illegal input: %d\n", I2C_NAME(client), iarg); return -EINVAL; } dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client), inputs[iarg]); encoder->input = iarg; } break; case ENCODER_SET_OUTPUT: { int *iarg = arg; /* not much choice of outputs */ if (*iarg != 0) { return -EINVAL; } } break; case ENCODER_ENABLE_OUTPUT: { int *iarg = arg; encoder->enable = !!*iarg; } break; default: 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_ADV7170 >> 1, (I2C_ADV7170 >> 1) + 1, I2C_ADV7171 >> 1, (I2C_ADV7171 >> 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_adv7170; static int adv7170_detect_client (struct i2c_adapter *adapter, int address, int kind) { int i; struct i2c_client *client; struct adv7170 *encoder; char *dname; dprintk(1, KERN_INFO "adv7170.c: detecting adv7170 client on address 0x%x\n", address << 1); /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_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_adv7170; if ((client->addr == I2C_ADV7170 >> 1) || (client->addr == (I2C_ADV7170 >> 1) + 1)) { dname = adv7170_name; } else if ((client->addr == I2C_ADV7171 >> 1) || (client->addr == (I2C_ADV7171 >> 1) + 1)) { dname = adv7171_name; } else { /* We should never get here!!! */ kfree(client); return 0; } strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client))); encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL); if (encoder == NULL) { kfree(client); return -ENOMEM; } encoder->norm = VIDEO_MODE_NTSC; encoder->input = 0; encoder->enable = 1; i2c_set_clientdata(client, encoder); i = i2c_attach_client(client); if (i) { kfree(client); kfree(encoder); return i; } i = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC)); if (i >= 0) { i = adv7170_write(client, 0x07, TR0MODE | TR0RST); i = adv7170_write(client, 0x07, TR0MODE); i = adv7170_read(client, 0x12); dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%02x\n", I2C_NAME(client), i & 1, client->addr << 1); } if (i < 0) { dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", I2C_NAME(client), i); } return 0; } static int adv7170_attach_adapter (struct i2c_adapter *adapter) { dprintk(1, KERN_INFO "adv7170.c: starting probe for adapter %s (0x%x)\n", I2C_NAME(adapter), adapter->id); return i2c_probe(adapter, &addr_data, &adv7170_detect_client); } static int adv7170_detach_client (struct i2c_client *client) { struct adv7170 *encoder = i2c_get_clientdata(client); int err; err = i2c_detach_client(client); if (err) { return err; } kfree(encoder); kfree(client); return 0; } /* ----------------------------------------------------------------------- */ static struct i2c_driver i2c_driver_adv7170 = { .driver = { .name = "adv7170", /* name */ }, .id = I2C_DRIVERID_ADV7170, .attach_adapter = adv7170_attach_adapter, .detach_client = adv7170_detach_client, .command = adv7170_command, }; static int __init adv7170_init (void) { return i2c_add_driver(&i2c_driver_adv7170); } static void __exit adv7170_exit (void) { i2c_del_driver(&i2c_driver_adv7170); } module_init(adv7170_init); module_exit(adv7170_exit);