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V4L/DVB (3665): Add new NEC uPD64031A and uPD64083 i2c drivers
- Add support for the uPD64031A NEC Electronics Ghost Reduction i2c device - Add support for the uPD6408x NEC Electronics 3-Dimensional Y/C separation i2c device. Signed-off-by: Takahiro Adachi <tadachi@tadachi-net.com> Signed-off-by: Takeru Komoriya <komoriya@paken.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Hans Verkuil
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Mauro Carvalho Chehab
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Apr 2, 2006
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan | ||
| * | ||
| * 2003 by T.Adachi <tadachi@tadachi-net.com> | ||
| * 2003 by Takeru KOMORIYA <komoriya@paken.org> | ||
| * 2006 by Hans Verkuil <hverkuil@xs4all.nl> | ||
| * | ||
| * 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. | ||
| */ | ||
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| #include <linux/version.h> | ||
| #include <linux/module.h> | ||
| #include <linux/kernel.h> | ||
| #include <linux/i2c.h> | ||
| #include <linux/videodev2.h> | ||
| #include <media/v4l2-common.h> | ||
| #include <media/upd64031a.h> | ||
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| // --------------------- read registers functions define ----------------------- | ||
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| /* bit masks */ | ||
| #define GR_MODE_MASK 0xc0 | ||
| #define DIRECT_3DYCS_CONNECT_MASK 0xc0 | ||
| #define SYNC_CIRCUIT_MASK 0xa0 | ||
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| // ----------------------------------------------------------------------------- | ||
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| MODULE_DESCRIPTION("uPD64031A driver"); | ||
| MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | ||
| MODULE_LICENSE("GPL"); | ||
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| static int debug = 0; | ||
| module_param(debug, int, 0644); | ||
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| MODULE_PARM_DESC(debug, "Debug level (0-1)"); | ||
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| static unsigned short normal_i2c[] = { 0x24 >> 1, 0x26 >> 1, I2C_CLIENT_END }; | ||
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| I2C_CLIENT_INSMOD; | ||
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| 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 | ||
| }; | ||
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| struct upd64031a_state { | ||
| u8 regs[TOT_REGS]; | ||
| u8 gr_mode; | ||
| u8 direct_3dycs_connect; | ||
| u8 ext_comp_sync; | ||
| u8 ext_vert_sync; | ||
| }; | ||
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| static u8 upd64031a_init[] = { | ||
| 0x00, 0xb8, 0x48, 0xd2, 0xe6, | ||
| 0x03, 0x10, 0x0b, 0xaf, 0x7f, | ||
| 0x00, 0x00, 0x1d, 0x5e, 0x00, | ||
| 0xd0 | ||
| }; | ||
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| /* ------------------------------------------------------------------------ */ | ||
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| static u8 upd64031a_read(struct i2c_client *client, u8 reg) | ||
| { | ||
| u8 buf[2]; | ||
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| if (reg >= sizeof(buf)) | ||
| return 0xff; | ||
| i2c_master_recv(client, buf, 2); | ||
| return buf[reg]; | ||
| } | ||
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| /* ------------------------------------------------------------------------ */ | ||
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| static void upd64031a_write(struct i2c_client *client, u8 reg, u8 val) | ||
| { | ||
| u8 buf[2]; | ||
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| 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); | ||
| } | ||
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| /* ------------------------------------------------------------------------ */ | ||
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| /* 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]; | ||
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| v4l_dbg(1, debug, client, "changed input or channel\n"); | ||
| upd64031a_write(client, R00, reg | 0x10); | ||
| upd64031a_write(client, R00, reg & ~0x10); | ||
| } | ||
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| /* ------------------------------------------------------------------------ */ | ||
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| 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; | ||
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| switch (cmd) { | ||
| case VIDIOC_S_FREQUENCY: | ||
| upd64031a_change(client); | ||
| break; | ||
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| 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; | ||
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| case VIDIOC_INT_S_VIDEO_ROUTING: | ||
| { | ||
| u8 r00, r05, r08; | ||
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| 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; | ||
| } | ||
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| case VIDIOC_LOG_STATUS: | ||
| v4l_info(client, "Status: SA00=0x%02x SA01=0x%02x\n", | ||
| upd64031a_read(client, 0), upd64031a_read(client, 1)); | ||
| break; | ||
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| #ifdef CONFIG_VIDEO_ADV_DEBUG | ||
| case VIDIOC_INT_G_REGISTER: | ||
| { | ||
| struct v4l2_register *reg = arg; | ||
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| if (reg->i2c_id != I2C_DRIVERID_UPD64031A) | ||
| return -EINVAL; | ||
| reg->val = upd64031a_read(client, reg->reg & 0xff); | ||
| break; | ||
| } | ||
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| case VIDIOC_INT_S_REGISTER: | ||
| { | ||
| struct v4l2_register *reg = arg; | ||
| u8 addr = reg->reg & 0xff; | ||
| u8 val = reg->val & 0xff; | ||
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| if (reg->i2c_id != I2C_DRIVERID_UPD64031A) | ||
| return -EINVAL; | ||
| if (!capable(CAP_SYS_ADMIN)) | ||
| return -EPERM; | ||
| upd64031a_write(client, addr, val); | ||
| break; | ||
| } | ||
| #endif | ||
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| default: | ||
| break; | ||
| } | ||
| return 0; | ||
| } | ||
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| /* ------------------------------------------------------------------------ */ | ||
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| /* i2c implementation */ | ||
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| static struct i2c_driver i2c_driver; | ||
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| static int upd64031a_attach(struct i2c_adapter *adapter, int address, int kind) | ||
| { | ||
| struct i2c_client *client; | ||
| struct upd64031a_state *state; | ||
| int i; | ||
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| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | ||
| return 0; | ||
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| client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); | ||
| if (client == NULL) { | ||
| return -ENOMEM; | ||
| } | ||
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| client->addr = address; | ||
| client->adapter = adapter; | ||
| client->driver = &i2c_driver; | ||
| snprintf(client->name, sizeof(client->name) - 1, "uPD64031A"); | ||
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| v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name); | ||
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| 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]); | ||
| } | ||
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| i2c_attach_client(client); | ||
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| return 0; | ||
| } | ||
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| 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; | ||
| } | ||
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| static int upd64031a_detach(struct i2c_client *client) | ||
| { | ||
| int err; | ||
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| err = i2c_detach_client(client); | ||
| if (err) | ||
| return err; | ||
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| kfree(client); | ||
| return 0; | ||
| } | ||
|
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| /* ----------------------------------------------------------------------- */ | ||
|
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| /* 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, | ||
| }; | ||
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| static int __init upd64031a_init_module(void) | ||
| { | ||
| return i2c_add_driver(&i2c_driver); | ||
| } | ||
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| static void __exit upd64031a_exit_module(void) | ||
| { | ||
| i2c_del_driver(&i2c_driver); | ||
| } | ||
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| module_init(upd64031a_init_module); | ||
| module_exit(upd64031a_exit_module); | ||
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