/* * upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan * * 2003 by T.Adachi * 2003 by Takeru KOMORIYA * 2006 by Hans Verkuil * * 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 // --------------------- read registers functions define ----------------------- /* bit masks */ #define GR_MODE_MASK 0xc0 #define DIRECT_3DYCS_CONNECT_MASK 0xc0 #define SYNC_CIRCUIT_MASK 0xa0 // ----------------------------------------------------------------------------- MODULE_DESCRIPTION("uPD64031A driver"); MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); MODULE_LICENSE("GPL"); static int debug = 0; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level (0-1)"); static unsigned short normal_i2c[] = { 0x24 >> 1, 0x26 >> 1, I2C_CLIENT_END }; I2C_CLIENT_INSMOD; enum { R00 = 0, R01, R02, R03, R04, R05, R06, R07, R08, R09, R0A, R0B, R0C, R0D, R0E, R0F, /* unused registers R10, R11, R12, R13, R14, R15, R16, R17, */ TOT_REGS }; struct upd64031a_state { u8 regs[TOT_REGS]; u8 gr_mode; u8 direct_3dycs_connect; u8 ext_comp_sync; u8 ext_vert_sync; }; static u8 upd64031a_init[] = { 0x00, 0xb8, 0x48, 0xd2, 0xe6, 0x03, 0x10, 0x0b, 0xaf, 0x7f, 0x00, 0x00, 0x1d, 0x5e, 0x00, 0xd0 }; /* ------------------------------------------------------------------------ */ static u8 upd64031a_read(struct i2c_client *client, u8 reg) { u8 buf[2]; if (reg >= sizeof(buf)) return 0xff; i2c_master_recv(client, buf, 2); return buf[reg]; } /* ------------------------------------------------------------------------ */ static void upd64031a_write(struct i2c_client *client, u8 reg, u8 val) { u8 buf[2]; buf[0] = reg; buf[1] = val; v4l_dbg(1, debug, client, "writing reg addr: %02X val: %02X\n", reg, val); if (i2c_master_send(client, buf, 2) != 2) v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val); } /* ------------------------------------------------------------------------ */ /* The input changed due to new input or channel changed */ static void upd64031a_change(struct i2c_client *client) { struct upd64031a_state *state = i2c_get_clientdata(client); u8 reg = state->regs[R00]; v4l_dbg(1, debug, client, "changed input or channel\n"); upd64031a_write(client, R00, reg | 0x10); upd64031a_write(client, R00, reg & ~0x10); } /* ------------------------------------------------------------------------ */ static int upd64031a_command(struct i2c_client *client, unsigned int cmd, void *arg) { struct upd64031a_state *state = i2c_get_clientdata(client); struct v4l2_routing *route = arg; switch (cmd) { case VIDIOC_S_FREQUENCY: upd64031a_change(client); break; case VIDIOC_INT_G_VIDEO_ROUTING: route->input = (state->gr_mode >> 6) | (state->direct_3dycs_connect >> 4) | (state->ext_comp_sync >> 1) | (state->ext_vert_sync >> 2); route->output = 0; break; case VIDIOC_INT_S_VIDEO_ROUTING: { u8 r00, r05, r08; state->gr_mode = (route->input & 3) << 6; state->direct_3dycs_connect = (route->input & 0xc) << 4; state->ext_comp_sync = (route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1; state->ext_vert_sync = (route->input & UPD64031A_VERTICAL_EXTERNAL) << 2; r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode; r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) | state->ext_comp_sync | state->ext_vert_sync; r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) | state->direct_3dycs_connect; upd64031a_write(client, R00, r00); upd64031a_write(client, R05, r05); upd64031a_write(client, R08, r08); upd64031a_change(client); break; } case VIDIOC_LOG_STATUS: v4l_info(client, "Status: SA00=0x%02x SA01=0x%02x\n", upd64031a_read(client, 0), upd64031a_read(client, 1)); break; #ifdef CONFIG_VIDEO_ADV_DEBUG case VIDIOC_INT_G_REGISTER: { struct v4l2_register *reg = arg; if (reg->i2c_id != I2C_DRIVERID_UPD64031A) return -EINVAL; reg->val = upd64031a_read(client, reg->reg & 0xff); break; } case VIDIOC_INT_S_REGISTER: { struct v4l2_register *reg = arg; u8 addr = reg->reg & 0xff; u8 val = reg->val & 0xff; if (reg->i2c_id != I2C_DRIVERID_UPD64031A) return -EINVAL; if (!capable(CAP_SYS_ADMIN)) return -EPERM; upd64031a_write(client, addr, val); break; } #endif default: break; } return 0; } /* ------------------------------------------------------------------------ */ /* i2c implementation */ static struct i2c_driver i2c_driver; static int upd64031a_attach(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *client; struct upd64031a_state *state; int i; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return 0; client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); if (client == NULL) { return -ENOMEM; } client->addr = address; client->adapter = adapter; client->driver = &i2c_driver; snprintf(client->name, sizeof(client->name) - 1, "uPD64031A"); v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name); state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL); if (state == NULL) { kfree(client); return -ENOMEM; } i2c_set_clientdata(client, state); memcpy(state->regs, upd64031a_init, sizeof(state->regs)); state->gr_mode = UPD64031A_GR_ON << 6; state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4; state->ext_comp_sync = state->ext_vert_sync = 0; for (i = 0; i < TOT_REGS; i++) { upd64031a_write(client, i, state->regs[i]); } i2c_attach_client(client); return 0; } static int upd64031a_probe(struct i2c_adapter *adapter) { if (adapter->class & I2C_CLASS_TV_ANALOG) return i2c_probe(adapter, &addr_data, upd64031a_attach); return 0; } static int upd64031a_detach(struct i2c_client *client) { int err; err = i2c_detach_client(client); if (err) return err; kfree(client); return 0; } /* ----------------------------------------------------------------------- */ /* i2c implementation */ static struct i2c_driver i2c_driver = { .driver = { .name = "upd64031a", }, .id = I2C_DRIVERID_UPD64031A, .attach_adapter = upd64031a_probe, .detach_client = upd64031a_detach, .command = upd64031a_command, }; static int __init upd64031a_init_module(void) { return i2c_add_driver(&i2c_driver); } static void __exit upd64031a_exit_module(void) { i2c_del_driver(&i2c_driver); } module_init(upd64031a_init_module); module_exit(upd64031a_exit_module);