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add953ce HV |
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 | ||
add953ce HV |
24 | #include <linux/module.h> |
25 | #include <linux/kernel.h> | |
26 | #include <linux/i2c.h> | |
27 | #include <linux/videodev2.h> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
09abd506 | 29 | #include <media/v4l2-device.h> |
74cab31c | 30 | #include <media/v4l2-chip-ident.h> |
add953ce HV |
31 | #include <media/upd64031a.h> |
32 | ||
79f998a7 | 33 | /* --------------------- read registers functions define -------------------- */ |
add953ce HV |
34 | |
35 | /* bit masks */ | |
36 | #define GR_MODE_MASK 0xc0 | |
37 | #define DIRECT_3DYCS_CONNECT_MASK 0xc0 | |
38 | #define SYNC_CIRCUIT_MASK 0xa0 | |
39 | ||
79f998a7 | 40 | /* -------------------------------------------------------------------------- */ |
add953ce HV |
41 | |
42 | MODULE_DESCRIPTION("uPD64031A driver"); | |
43 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
44 | MODULE_LICENSE("GPL"); | |
45 | ||
79f998a7 | 46 | static int debug; |
add953ce HV |
47 | module_param(debug, int, 0644); |
48 | ||
49 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
50 | ||
add953ce HV |
51 | |
52 | enum { | |
53 | R00 = 0, R01, R02, R03, R04, | |
54 | R05, R06, R07, R08, R09, | |
55 | R0A, R0B, R0C, R0D, R0E, R0F, | |
56 | /* unused registers | |
57 | R10, R11, R12, R13, R14, | |
58 | R15, R16, R17, | |
59 | */ | |
60 | TOT_REGS | |
61 | }; | |
62 | ||
63 | struct upd64031a_state { | |
09abd506 | 64 | struct v4l2_subdev sd; |
add953ce HV |
65 | u8 regs[TOT_REGS]; |
66 | u8 gr_mode; | |
67 | u8 direct_3dycs_connect; | |
68 | u8 ext_comp_sync; | |
69 | u8 ext_vert_sync; | |
70 | }; | |
71 | ||
09abd506 HV |
72 | static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd) |
73 | { | |
74 | return container_of(sd, struct upd64031a_state, sd); | |
75 | } | |
76 | ||
add953ce HV |
77 | static u8 upd64031a_init[] = { |
78 | 0x00, 0xb8, 0x48, 0xd2, 0xe6, | |
79 | 0x03, 0x10, 0x0b, 0xaf, 0x7f, | |
80 | 0x00, 0x00, 0x1d, 0x5e, 0x00, | |
81 | 0xd0 | |
82 | }; | |
83 | ||
84 | /* ------------------------------------------------------------------------ */ | |
85 | ||
09abd506 | 86 | static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg) |
add953ce | 87 | { |
09abd506 | 88 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
89 | u8 buf[2]; |
90 | ||
91 | if (reg >= sizeof(buf)) | |
92 | return 0xff; | |
93 | i2c_master_recv(client, buf, 2); | |
94 | return buf[reg]; | |
95 | } | |
96 | ||
97 | /* ------------------------------------------------------------------------ */ | |
98 | ||
09abd506 | 99 | static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val) |
add953ce | 100 | { |
09abd506 | 101 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
102 | u8 buf[2]; |
103 | ||
104 | buf[0] = reg; | |
105 | buf[1] = val; | |
09abd506 | 106 | v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val); |
add953ce | 107 | if (i2c_master_send(client, buf, 2) != 2) |
09abd506 | 108 | v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val); |
add953ce HV |
109 | } |
110 | ||
111 | /* ------------------------------------------------------------------------ */ | |
112 | ||
113 | /* The input changed due to new input or channel changed */ | |
09abd506 | 114 | static int upd64031a_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq) |
add953ce | 115 | { |
09abd506 | 116 | struct upd64031a_state *state = to_state(sd); |
add953ce HV |
117 | u8 reg = state->regs[R00]; |
118 | ||
09abd506 HV |
119 | v4l2_dbg(1, debug, sd, "changed input or channel\n"); |
120 | upd64031a_write(sd, R00, reg | 0x10); | |
121 | upd64031a_write(sd, R00, reg & ~0x10); | |
122 | return 0; | |
add953ce HV |
123 | } |
124 | ||
125 | /* ------------------------------------------------------------------------ */ | |
126 | ||
5325b427 HV |
127 | static int upd64031a_s_routing(struct v4l2_subdev *sd, |
128 | u32 input, u32 output, u32 config) | |
09abd506 HV |
129 | { |
130 | struct upd64031a_state *state = to_state(sd); | |
131 | u8 r00, r05, r08; | |
132 | ||
5325b427 HV |
133 | state->gr_mode = (input & 3) << 6; |
134 | state->direct_3dycs_connect = (input & 0xc) << 4; | |
09abd506 | 135 | state->ext_comp_sync = |
5325b427 | 136 | (input & UPD64031A_COMPOSITE_EXTERNAL) << 1; |
09abd506 | 137 | state->ext_vert_sync = |
5325b427 | 138 | (input & UPD64031A_VERTICAL_EXTERNAL) << 2; |
09abd506 HV |
139 | r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode; |
140 | r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) | | |
141 | state->ext_comp_sync | state->ext_vert_sync; | |
142 | r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) | | |
143 | state->direct_3dycs_connect; | |
144 | upd64031a_write(sd, R00, r00); | |
145 | upd64031a_write(sd, R05, r05); | |
146 | upd64031a_write(sd, R08, r08); | |
147 | return upd64031a_s_frequency(sd, NULL); | |
148 | } | |
149 | ||
aecde8b5 | 150 | static int upd64031a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
09abd506 HV |
151 | { |
152 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
153 | ||
154 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_UPD64031A, 0); | |
155 | } | |
156 | ||
157 | static int upd64031a_log_status(struct v4l2_subdev *sd) | |
158 | { | |
159 | v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n", | |
160 | upd64031a_read(sd, 0), upd64031a_read(sd, 1)); | |
161 | return 0; | |
162 | } | |
163 | ||
164 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
aecde8b5 | 165 | static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
09abd506 HV |
166 | { |
167 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
168 | ||
aecde8b5 | 169 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
09abd506 HV |
170 | return -EINVAL; |
171 | if (!capable(CAP_SYS_ADMIN)) | |
172 | return -EPERM; | |
173 | reg->val = upd64031a_read(sd, reg->reg & 0xff); | |
aecde8b5 | 174 | reg->size = 1; |
09abd506 HV |
175 | return 0; |
176 | } | |
177 | ||
aecde8b5 | 178 | static int upd64031a_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
09abd506 HV |
179 | { |
180 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
181 | ||
aecde8b5 | 182 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
09abd506 HV |
183 | return -EINVAL; |
184 | if (!capable(CAP_SYS_ADMIN)) | |
185 | return -EPERM; | |
186 | upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff); | |
187 | return 0; | |
188 | } | |
189 | #endif | |
190 | ||
09abd506 | 191 | /* ----------------------------------------------------------------------- */ |
add953ce | 192 | |
09abd506 HV |
193 | static const struct v4l2_subdev_core_ops upd64031a_core_ops = { |
194 | .log_status = upd64031a_log_status, | |
195 | .g_chip_ident = upd64031a_g_chip_ident, | |
add953ce | 196 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
09abd506 HV |
197 | .g_register = upd64031a_g_register, |
198 | .s_register = upd64031a_s_register, | |
add953ce | 199 | #endif |
09abd506 | 200 | }; |
add953ce | 201 | |
09abd506 HV |
202 | static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = { |
203 | .s_frequency = upd64031a_s_frequency, | |
204 | }; | |
74cab31c | 205 | |
09abd506 HV |
206 | static const struct v4l2_subdev_video_ops upd64031a_video_ops = { |
207 | .s_routing = upd64031a_s_routing, | |
208 | }; | |
209 | ||
210 | static const struct v4l2_subdev_ops upd64031a_ops = { | |
211 | .core = &upd64031a_core_ops, | |
212 | .tuner = &upd64031a_tuner_ops, | |
213 | .video = &upd64031a_video_ops, | |
214 | }; | |
add953ce HV |
215 | |
216 | /* ------------------------------------------------------------------------ */ | |
217 | ||
218 | /* i2c implementation */ | |
219 | ||
d2653e92 JD |
220 | static int upd64031a_probe(struct i2c_client *client, |
221 | const struct i2c_device_id *id) | |
add953ce | 222 | { |
add953ce | 223 | struct upd64031a_state *state; |
09abd506 | 224 | struct v4l2_subdev *sd; |
add953ce HV |
225 | int i; |
226 | ||
2b14e031 | 227 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 228 | return -EIO; |
add953ce | 229 | |
79f998a7 HV |
230 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
231 | client->addr << 1, client->adapter->name); | |
add953ce HV |
232 | |
233 | state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL); | |
79f998a7 | 234 | if (state == NULL) |
add953ce | 235 | return -ENOMEM; |
09abd506 HV |
236 | sd = &state->sd; |
237 | v4l2_i2c_subdev_init(sd, client, &upd64031a_ops); | |
add953ce HV |
238 | memcpy(state->regs, upd64031a_init, sizeof(state->regs)); |
239 | state->gr_mode = UPD64031A_GR_ON << 6; | |
240 | state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4; | |
241 | state->ext_comp_sync = state->ext_vert_sync = 0; | |
79f998a7 | 242 | for (i = 0; i < TOT_REGS; i++) |
09abd506 | 243 | upd64031a_write(sd, i, state->regs[i]); |
add953ce HV |
244 | return 0; |
245 | } | |
246 | ||
2b14e031 | 247 | static int upd64031a_remove(struct i2c_client *client) |
add953ce | 248 | { |
09abd506 HV |
249 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
250 | ||
251 | v4l2_device_unregister_subdev(sd); | |
252 | kfree(to_state(sd)); | |
add953ce HV |
253 | return 0; |
254 | } | |
255 | ||
256 | /* ----------------------------------------------------------------------- */ | |
257 | ||
af294867 JD |
258 | static const struct i2c_device_id upd64031a_id[] = { |
259 | { "upd64031a", 0 }, | |
260 | { } | |
261 | }; | |
262 | MODULE_DEVICE_TABLE(i2c, upd64031a_id); | |
2b14e031 | 263 | |
962961ef HV |
264 | static struct i2c_driver upd64031a_driver = { |
265 | .driver = { | |
266 | .owner = THIS_MODULE, | |
267 | .name = "upd64031a", | |
268 | }, | |
269 | .probe = upd64031a_probe, | |
270 | .remove = upd64031a_remove, | |
271 | .id_table = upd64031a_id, | |
add953ce | 272 | }; |
962961ef HV |
273 | |
274 | static __init int init_upd64031a(void) | |
275 | { | |
276 | return i2c_add_driver(&upd64031a_driver); | |
277 | } | |
278 | ||
279 | static __exit void exit_upd64031a(void) | |
280 | { | |
281 | i2c_del_driver(&upd64031a_driver); | |
282 | } | |
283 | ||
284 | module_init(init_upd64031a); | |
285 | module_exit(exit_upd64031a); |