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authorHans Verkuil <hverkuil@xs4all.nl>2006-03-29 12:56:17 -0500
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-04-02 03:55:51 -0400
commitadd953cecba870f4ad7730bd0a6d5eaaabeac3bc (patch)
treee42b154981058ffcc2205ccb31b73b5c7e4b9db5 /drivers/media/video/upd64031a.c
parent7061561e640c2947ab93c4e2a437327657c4482e (diff)
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>
Diffstat (limited to 'drivers/media/video/upd64031a.c')
-rw-r--r--drivers/media/video/upd64031a.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/drivers/media/video/upd64031a.c b/drivers/media/video/upd64031a.c
new file mode 100644
index 000000000000..bab5beadc6ae
--- /dev/null
+++ b/drivers/media/video/upd64031a.c
@@ -0,0 +1,287 @@
1/*
2 * upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan
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 modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (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
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
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>
30#include <media/upd64031a.h>
31
32// --------------------- read registers functions define -----------------------
33
34/* bit masks */
35#define GR_MODE_MASK 0xc0
36#define DIRECT_3DYCS_CONNECT_MASK 0xc0
37#define SYNC_CIRCUIT_MASK 0xa0
38
39// -----------------------------------------------------------------------------
40
41MODULE_DESCRIPTION("uPD64031A driver");
42MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
43MODULE_LICENSE("GPL");
44
45static int debug = 0;
46module_param(debug, int, 0644);
47
48MODULE_PARM_DESC(debug, "Debug level (0-1)");
49
50static unsigned short normal_i2c[] = { 0x24 >> 1, 0x26 >> 1, I2C_CLIENT_END };
51
52
53I2C_CLIENT_INSMOD;
54
55enum {
56 R00 = 0, R01, R02, R03, R04,
57 R05, R06, R07, R08, R09,
58 R0A, R0B, R0C, R0D, R0E, R0F,
59 /* unused registers
60 R10, R11, R12, R13, R14,
61 R15, R16, R17,
62 */
63 TOT_REGS
64};
65
66struct upd64031a_state {
67 u8 regs[TOT_REGS];
68 u8 gr_mode;
69 u8 direct_3dycs_connect;
70 u8 ext_comp_sync;
71 u8 ext_vert_sync;
72};
73
74static u8 upd64031a_init[] = {
75 0x00, 0xb8, 0x48, 0xd2, 0xe6,
76 0x03, 0x10, 0x0b, 0xaf, 0x7f,
77 0x00, 0x00, 0x1d, 0x5e, 0x00,
78 0xd0
79};
80
81/* ------------------------------------------------------------------------ */
82
83static u8 upd64031a_read(struct i2c_client *client, u8 reg)
84{
85 u8 buf[2];
86
87 if (reg >= sizeof(buf))
88 return 0xff;
89 i2c_master_recv(client, buf, 2);
90 return buf[reg];
91}
92
93/* ------------------------------------------------------------------------ */
94
95static void upd64031a_write(struct i2c_client *client, u8 reg, u8 val)
96{
97 u8 buf[2];
98
99 buf[0] = reg;
100 buf[1] = val;
101 v4l_dbg(1, debug, client, "writing reg addr: %02X val: %02X\n", reg, val);
102 if (i2c_master_send(client, buf, 2) != 2)
103 v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val);
104}
105
106/* ------------------------------------------------------------------------ */
107
108/* The input changed due to new input or channel changed */
109static void upd64031a_change(struct i2c_client *client)
110{
111 struct upd64031a_state *state = i2c_get_clientdata(client);
112 u8 reg = state->regs[R00];
113
114 v4l_dbg(1, debug, client, "changed input or channel\n");
115 upd64031a_write(client, R00, reg | 0x10);
116 upd64031a_write(client, R00, reg & ~0x10);
117}
118
119/* ------------------------------------------------------------------------ */
120
121static int upd64031a_command(struct i2c_client *client, unsigned int cmd, void *arg)
122{
123 struct upd64031a_state *state = i2c_get_clientdata(client);
124 struct v4l2_routing *route = arg;
125
126 switch (cmd) {
127 case VIDIOC_S_FREQUENCY:
128 upd64031a_change(client);
129 break;
130
131 case VIDIOC_INT_G_VIDEO_ROUTING:
132 route->input = (state->gr_mode >> 6) |
133 (state->direct_3dycs_connect >> 4) |
134 (state->ext_comp_sync >> 1) |
135 (state->ext_vert_sync >> 2);
136 route->output = 0;
137 break;
138
139 case VIDIOC_INT_S_VIDEO_ROUTING:
140 {
141 u8 r00, r05, r08;
142
143 state->gr_mode = (route->input & 3) << 6;
144 state->direct_3dycs_connect = (route->input & 0xc) << 4;
145 state->ext_comp_sync = (route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
146 state->ext_vert_sync = (route->input & UPD64031A_VERTICAL_EXTERNAL) << 2;
147 r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode;
148 r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) |
149 state->ext_comp_sync | state->ext_vert_sync;
150 r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) |
151 state->direct_3dycs_connect;
152 upd64031a_write(client, R00, r00);
153 upd64031a_write(client, R05, r05);
154 upd64031a_write(client, R08, r08);
155 upd64031a_change(client);
156 break;
157 }
158
159 case VIDIOC_LOG_STATUS:
160 v4l_info(client, "Status: SA00=0x%02x SA01=0x%02x\n",
161 upd64031a_read(client, 0), upd64031a_read(client, 1));
162 break;
163
164#ifdef CONFIG_VIDEO_ADV_DEBUG
165 case VIDIOC_INT_G_REGISTER:
166 {
167 struct v4l2_register *reg = arg;
168
169 if (reg->i2c_id != I2C_DRIVERID_UPD64031A)
170 return -EINVAL;
171 reg->val = upd64031a_read(client, reg->reg & 0xff);
172 break;
173 }
174
175 case VIDIOC_INT_S_REGISTER:
176 {
177 struct v4l2_register *reg = arg;
178 u8 addr = reg->reg & 0xff;
179 u8 val = reg->val & 0xff;
180
181 if (reg->i2c_id != I2C_DRIVERID_UPD64031A)
182 return -EINVAL;
183 if (!capable(CAP_SYS_ADMIN))
184 return -EPERM;
185 upd64031a_write(client, addr, val);
186 break;
187 }
188#endif
189
190 default:
191 break;
192 }
193 return 0;
194}
195
196/* ------------------------------------------------------------------------ */
197
198/* i2c implementation */
199
200static struct i2c_driver i2c_driver;
201
202static int upd64031a_attach(struct i2c_adapter *adapter, int address, int kind)
203{
204 struct i2c_client *client;
205 struct upd64031a_state *state;
206 int i;
207
208 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
209 return 0;
210
211 client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
212 if (client == NULL) {
213 return -ENOMEM;
214 }
215
216 client->addr = address;
217 client->adapter = adapter;
218 client->driver = &i2c_driver;
219 snprintf(client->name, sizeof(client->name) - 1, "uPD64031A");
220
221 v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name);
222
223 state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL);
224 if (state == NULL) {
225 kfree(client);
226 return -ENOMEM;
227 }
228 i2c_set_clientdata(client, state);
229 memcpy(state->regs, upd64031a_init, sizeof(state->regs));
230 state->gr_mode = UPD64031A_GR_ON << 6;
231 state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
232 state->ext_comp_sync = state->ext_vert_sync = 0;
233 for (i = 0; i < TOT_REGS; i++) {
234 upd64031a_write(client, i, state->regs[i]);
235 }
236
237 i2c_attach_client(client);
238
239 return 0;
240}
241
242static int upd64031a_probe(struct i2c_adapter *adapter)
243{
244 if (adapter->class & I2C_CLASS_TV_ANALOG)
245 return i2c_probe(adapter, &addr_data, upd64031a_attach);
246 return 0;
247}
248
249static int upd64031a_detach(struct i2c_client *client)
250{
251 int err;
252
253 err = i2c_detach_client(client);
254 if (err)
255 return err;
256
257 kfree(client);
258 return 0;
259}
260
261/* ----------------------------------------------------------------------- */
262
263/* i2c implementation */
264static struct i2c_driver i2c_driver = {
265 .driver = {
266 .name = "upd64031a",
267 },
268 .id = I2C_DRIVERID_UPD64031A,
269 .attach_adapter = upd64031a_probe,
270 .detach_client = upd64031a_detach,
271 .command = upd64031a_command,
272};
273
274
275static int __init upd64031a_init_module(void)
276{
277 return i2c_add_driver(&i2c_driver);
278}
279
280static void __exit upd64031a_exit_module(void)
281{
282 i2c_del_driver(&i2c_driver);
283}
284
285module_init(upd64031a_init_module);
286module_exit(upd64031a_exit_module);
287