blob: 9521ce004dcc1b282b4febbb4bcb7a3a43f74e25 [file] [log] [blame]
Hans Verkuiladd953c2006-03-29 14:56:17 -03001/*
2 * upd6408x - NEC Electronics 3-Dimensional Y/C separation driver
3 *
4 * 2003 by T.Adachi (tadachi@tadachi-net.com)
5 * 2003 by Takeru KOMORIYA <komoriya@paken.org>
6 * 2006 by Hans Verkuil <hverkuil@xs4all.nl>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -030020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
Hans Verkuiladd953c2006-03-29 14:56:17 -030022 */
23
24#include <linux/version.h>
25#include <linux/module.h>
26#include <linux/kernel.h>
27#include <linux/i2c.h>
28#include <linux/videodev2.h>
29#include <media/v4l2-common.h>
Hans Verkuil74cab312007-04-27 12:31:26 -030030#include <media/v4l2-chip-ident.h>
Hans Verkuilf69d4192007-12-12 07:24:27 -030031#include <media/v4l2-i2c-drv.h>
Hans Verkuiladd953c2006-03-29 14:56:17 -030032#include <media/upd64083.h>
33
34MODULE_DESCRIPTION("uPD64083 driver");
35MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
36MODULE_LICENSE("GPL");
37
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -030038static int debug;
Hans Verkuiladd953c2006-03-29 14:56:17 -030039module_param(debug, bool, 0644);
40
41MODULE_PARM_DESC(debug, "Debug level (0-1)");
42
Hans Verkuiladd953c2006-03-29 14:56:17 -030043
44enum {
45 R00 = 0, R01, R02, R03, R04,
46 R05, R06, R07, R08, R09,
47 R0A, R0B, R0C, R0D, R0E, R0F,
48 R10, R11, R12, R13, R14,
49 R15, R16,
50 TOT_REGS
51};
52
53struct upd64083_state {
54 u8 mode;
55 u8 ext_y_adc;
56 u8 regs[TOT_REGS];
57};
58
59/* Initial values when used in combination with the
60 NEC upd64031a ghost reduction chip. */
61static u8 upd64083_init[] = {
62 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */
63 0x36, 0xdd, 0x05, 0x56, 0x48,
64 0x00, 0x3a, 0xa0, 0x05, 0x08,
65 0x44, 0x60, 0x08, 0x52, 0xf8,
66 0x53, 0x60, 0x10
67};
68
69/* ------------------------------------------------------------------------ */
70
71static void upd64083_log_status(struct i2c_client *client)
72{
73 u8 buf[7];
74
75 i2c_master_recv(client, buf, 7);
76 v4l_info(client, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x "
77 "SA04=%02x SA05=%02x SA06=%02x\n",
78 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
79}
80
81/* ------------------------------------------------------------------------ */
82
83static void upd64083_write(struct i2c_client *client, u8 reg, u8 val)
84{
85 u8 buf[2];
86
87 buf[0] = reg;
88 buf[1] = val;
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -030089 v4l_dbg(1, debug, client, "write reg: %02x val: %02x\n", reg, val);
Hans Verkuiladd953c2006-03-29 14:56:17 -030090 if (i2c_master_send(client, buf, 2) != 2)
91 v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val);
92}
93
94/* ------------------------------------------------------------------------ */
95
96#ifdef CONFIG_VIDEO_ADV_DEBUG
97static u8 upd64083_read(struct i2c_client *client, u8 reg)
98{
99 u8 buf[7];
100
101 if (reg >= sizeof(buf))
102 return 0xff;
103 i2c_master_recv(client, buf, sizeof(buf));
104 return buf[reg];
105}
106#endif
107
108/* ------------------------------------------------------------------------ */
109
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300110static int upd64083_command(struct i2c_client *client, unsigned cmd, void *arg)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300111{
112 struct upd64083_state *state = i2c_get_clientdata(client);
113 struct v4l2_routing *route = arg;
114
115 switch (cmd) {
116 case VIDIOC_INT_G_VIDEO_ROUTING:
117 route->input = (state->mode >> 6) | (state->ext_y_adc >> 3);
118 route->output = 0;
119 break;
120
121 case VIDIOC_INT_S_VIDEO_ROUTING:
122 {
123 u8 r00, r02;
124
125 if (route->input > 7 || (route->input & 6) == 6)
126 return -EINVAL;
127 state->mode = (route->input & 3) << 6;
128 state->ext_y_adc = (route->input & UPD64083_EXT_Y_ADC) << 3;
129 r00 = (state->regs[R00] & ~(3 << 6)) | state->mode;
130 r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc;
131 upd64083_write(client, R00, r00);
132 upd64083_write(client, R02, r02);
133 break;
134 }
135
136 case VIDIOC_LOG_STATUS:
137 upd64083_log_status(client);
138 break;
139
140#ifdef CONFIG_VIDEO_ADV_DEBUG
Trent Piepho52ebc762007-01-23 22:38:13 -0300141 case VIDIOC_DBG_G_REGISTER:
Trent Piepho52ebc762007-01-23 22:38:13 -0300142 case VIDIOC_DBG_S_REGISTER:
Hans Verkuiladd953c2006-03-29 14:56:17 -0300143 {
144 struct v4l2_register *reg = arg;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300145
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300146 if (!v4l2_chip_match_i2c_client(client,
147 reg->match_type, reg->match_chip))
Hans Verkuiladd953c2006-03-29 14:56:17 -0300148 return -EINVAL;
149 if (!capable(CAP_SYS_ADMIN))
150 return -EPERM;
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300151 if (cmd == VIDIOC_DBG_G_REGISTER) {
Trent Piepho62d50ad2007-01-30 23:25:41 -0300152 reg->val = upd64083_read(client, reg->reg & 0xff);
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300153 break;
154 }
155 upd64083_write(client, reg->reg & 0xff, reg->val & 0xff);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300156 break;
157 }
158#endif
Hans Verkuil74cab312007-04-27 12:31:26 -0300159
160 case VIDIOC_G_CHIP_IDENT:
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300161 return v4l2_chip_ident_i2c_client(client, arg,
162 V4L2_IDENT_UPD64083, 0);
Hans Verkuil74cab312007-04-27 12:31:26 -0300163
Hans Verkuiladd953c2006-03-29 14:56:17 -0300164 default:
165 break;
166 }
167
168 return 0;
169}
170
171/* ------------------------------------------------------------------------ */
172
173/* i2c implementation */
174
Jean Delvared2653e92008-04-29 23:11:39 +0200175static int upd64083_probe(struct i2c_client *client,
176 const struct i2c_device_id *id)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300177{
Hans Verkuiladd953c2006-03-29 14:56:17 -0300178 struct upd64083_state *state;
179 int i;
180
Hans Verkuil26666972007-09-14 04:58:06 -0300181 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
Hans Verkuil188f3452007-09-16 10:47:15 -0300182 return -EIO;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300183
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300184 v4l_info(client, "chip found @ 0x%x (%s)\n",
185 client->addr << 1, client->adapter->name);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300186
187 state = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL);
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300188 if (state == NULL)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300189 return -ENOMEM;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300190 i2c_set_clientdata(client, state);
191 /* Initially assume that a ghost reduction chip is present */
192 state->mode = 0; /* YCS mode */
193 state->ext_y_adc = (1 << 5);
194 memcpy(state->regs, upd64083_init, TOT_REGS);
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300195 for (i = 0; i < TOT_REGS; i++)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300196 upd64083_write(client, i, state->regs[i]);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300197 return 0;
198}
199
Hans Verkuil26666972007-09-14 04:58:06 -0300200static int upd64083_remove(struct i2c_client *client)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300201{
Hans Verkuil26666972007-09-14 04:58:06 -0300202 kfree(i2c_get_clientdata(client));
Hans Verkuiladd953c2006-03-29 14:56:17 -0300203 return 0;
204}
205
206/* ----------------------------------------------------------------------- */
207
Jean Delvareaf294862008-05-18 20:49:40 +0200208static const struct i2c_device_id upd64083_id[] = {
209 { "upd64083", 0 },
210 { }
211};
212MODULE_DEVICE_TABLE(i2c, upd64083_id);
Hans Verkuil26666972007-09-14 04:58:06 -0300213
214static struct v4l2_i2c_driver_data v4l2_i2c_data = {
215 .name = "upd64083",
216 .driverid = I2C_DRIVERID_UPD64083,
Hans Verkuiladd953c2006-03-29 14:56:17 -0300217 .command = upd64083_command,
Hans Verkuil26666972007-09-14 04:58:06 -0300218 .probe = upd64083_probe,
219 .remove = upd64083_remove,
Jean Delvareaf294862008-05-18 20:49:40 +0200220 .id_table = upd64083_id,
Hans Verkuiladd953c2006-03-29 14:56:17 -0300221};