Commit | Line | Data |
---|---|---|
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 | ||
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> | |
09abd506 | 29 | #include <media/v4l2-device.h> |
74cab31c | 30 | #include <media/v4l2-chip-ident.h> |
f69d419a | 31 | #include <media/v4l2-i2c-drv.h> |
add953ce HV |
32 | #include <media/upd64031a.h> |
33 | ||
79f998a7 | 34 | /* --------------------- read registers functions define -------------------- */ |
add953ce HV |
35 | |
36 | /* bit masks */ | |
37 | #define GR_MODE_MASK 0xc0 | |
38 | #define DIRECT_3DYCS_CONNECT_MASK 0xc0 | |
39 | #define SYNC_CIRCUIT_MASK 0xa0 | |
40 | ||
79f998a7 | 41 | /* -------------------------------------------------------------------------- */ |
add953ce HV |
42 | |
43 | MODULE_DESCRIPTION("uPD64031A driver"); | |
44 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
79f998a7 | 47 | static int debug; |
add953ce HV |
48 | module_param(debug, int, 0644); |
49 | ||
50 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
51 | ||
add953ce HV |
52 | |
53 | enum { | |
54 | R00 = 0, R01, R02, R03, R04, | |
55 | R05, R06, R07, R08, R09, | |
56 | R0A, R0B, R0C, R0D, R0E, R0F, | |
57 | /* unused registers | |
58 | R10, R11, R12, R13, R14, | |
59 | R15, R16, R17, | |
60 | */ | |
61 | TOT_REGS | |
62 | }; | |
63 | ||
64 | struct upd64031a_state { | |
09abd506 | 65 | struct v4l2_subdev sd; |
add953ce HV |
66 | u8 regs[TOT_REGS]; |
67 | u8 gr_mode; | |
68 | u8 direct_3dycs_connect; | |
69 | u8 ext_comp_sync; | |
70 | u8 ext_vert_sync; | |
71 | }; | |
72 | ||
09abd506 HV |
73 | static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd) |
74 | { | |
75 | return container_of(sd, struct upd64031a_state, sd); | |
76 | } | |
77 | ||
add953ce HV |
78 | static u8 upd64031a_init[] = { |
79 | 0x00, 0xb8, 0x48, 0xd2, 0xe6, | |
80 | 0x03, 0x10, 0x0b, 0xaf, 0x7f, | |
81 | 0x00, 0x00, 0x1d, 0x5e, 0x00, | |
82 | 0xd0 | |
83 | }; | |
84 | ||
85 | /* ------------------------------------------------------------------------ */ | |
86 | ||
09abd506 | 87 | static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg) |
add953ce | 88 | { |
09abd506 | 89 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
90 | u8 buf[2]; |
91 | ||
92 | if (reg >= sizeof(buf)) | |
93 | return 0xff; | |
94 | i2c_master_recv(client, buf, 2); | |
95 | return buf[reg]; | |
96 | } | |
97 | ||
98 | /* ------------------------------------------------------------------------ */ | |
99 | ||
09abd506 | 100 | static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val) |
add953ce | 101 | { |
09abd506 | 102 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
103 | u8 buf[2]; |
104 | ||
105 | buf[0] = reg; | |
106 | buf[1] = val; | |
09abd506 | 107 | v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val); |
add953ce | 108 | if (i2c_master_send(client, buf, 2) != 2) |
09abd506 | 109 | v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val); |
add953ce HV |
110 | } |
111 | ||
112 | /* ------------------------------------------------------------------------ */ | |
113 | ||
114 | /* The input changed due to new input or channel changed */ | |
09abd506 | 115 | static int upd64031a_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq) |
add953ce | 116 | { |
09abd506 | 117 | struct upd64031a_state *state = to_state(sd); |
add953ce HV |
118 | u8 reg = state->regs[R00]; |
119 | ||
09abd506 HV |
120 | v4l2_dbg(1, debug, sd, "changed input or channel\n"); |
121 | upd64031a_write(sd, R00, reg | 0x10); | |
122 | upd64031a_write(sd, R00, reg & ~0x10); | |
123 | return 0; | |
add953ce HV |
124 | } |
125 | ||
126 | /* ------------------------------------------------------------------------ */ | |
127 | ||
09abd506 HV |
128 | static int upd64031a_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route) |
129 | { | |
130 | struct upd64031a_state *state = to_state(sd); | |
131 | u8 r00, r05, r08; | |
132 | ||
133 | state->gr_mode = (route->input & 3) << 6; | |
134 | state->direct_3dycs_connect = (route->input & 0xc) << 4; | |
135 | state->ext_comp_sync = | |
136 | (route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1; | |
137 | state->ext_vert_sync = | |
138 | (route->input & UPD64031A_VERTICAL_EXTERNAL) << 2; | |
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 | ||
150 | static int upd64031a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip) | |
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 | |
165 | static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg) | |
166 | { | |
167 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
168 | ||
169 | if (!v4l2_chip_match_i2c_client(client, | |
170 | reg->match_type, reg->match_chip)) | |
171 | return -EINVAL; | |
172 | if (!capable(CAP_SYS_ADMIN)) | |
173 | return -EPERM; | |
174 | reg->val = upd64031a_read(sd, reg->reg & 0xff); | |
175 | return 0; | |
176 | } | |
177 | ||
178 | static int upd64031a_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg) | |
179 | { | |
180 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
181 | ||
182 | if (!v4l2_chip_match_i2c_client(client, | |
183 | reg->match_type, reg->match_chip)) | |
184 | return -EINVAL; | |
185 | if (!capable(CAP_SYS_ADMIN)) | |
186 | return -EPERM; | |
187 | upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff); | |
188 | return 0; | |
189 | } | |
190 | #endif | |
191 | ||
79f998a7 | 192 | static int upd64031a_command(struct i2c_client *client, unsigned cmd, void *arg) |
add953ce | 193 | { |
09abd506 HV |
194 | return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg); |
195 | } | |
196 | ||
197 | /* ----------------------------------------------------------------------- */ | |
add953ce | 198 | |
09abd506 HV |
199 | static const struct v4l2_subdev_core_ops upd64031a_core_ops = { |
200 | .log_status = upd64031a_log_status, | |
201 | .g_chip_ident = upd64031a_g_chip_ident, | |
add953ce | 202 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
09abd506 HV |
203 | .g_register = upd64031a_g_register, |
204 | .s_register = upd64031a_s_register, | |
add953ce | 205 | #endif |
09abd506 | 206 | }; |
add953ce | 207 | |
09abd506 HV |
208 | static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = { |
209 | .s_frequency = upd64031a_s_frequency, | |
210 | }; | |
74cab31c | 211 | |
09abd506 HV |
212 | static const struct v4l2_subdev_video_ops upd64031a_video_ops = { |
213 | .s_routing = upd64031a_s_routing, | |
214 | }; | |
215 | ||
216 | static const struct v4l2_subdev_ops upd64031a_ops = { | |
217 | .core = &upd64031a_core_ops, | |
218 | .tuner = &upd64031a_tuner_ops, | |
219 | .video = &upd64031a_video_ops, | |
220 | }; | |
add953ce HV |
221 | |
222 | /* ------------------------------------------------------------------------ */ | |
223 | ||
224 | /* i2c implementation */ | |
225 | ||
d2653e92 JD |
226 | static int upd64031a_probe(struct i2c_client *client, |
227 | const struct i2c_device_id *id) | |
add953ce | 228 | { |
add953ce | 229 | struct upd64031a_state *state; |
09abd506 | 230 | struct v4l2_subdev *sd; |
add953ce HV |
231 | int i; |
232 | ||
2b14e031 | 233 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 234 | return -EIO; |
add953ce | 235 | |
79f998a7 HV |
236 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
237 | client->addr << 1, client->adapter->name); | |
add953ce HV |
238 | |
239 | state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL); | |
79f998a7 | 240 | if (state == NULL) |
add953ce | 241 | return -ENOMEM; |
09abd506 HV |
242 | sd = &state->sd; |
243 | v4l2_i2c_subdev_init(sd, client, &upd64031a_ops); | |
add953ce HV |
244 | memcpy(state->regs, upd64031a_init, sizeof(state->regs)); |
245 | state->gr_mode = UPD64031A_GR_ON << 6; | |
246 | state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4; | |
247 | state->ext_comp_sync = state->ext_vert_sync = 0; | |
79f998a7 | 248 | for (i = 0; i < TOT_REGS; i++) |
09abd506 | 249 | upd64031a_write(sd, i, state->regs[i]); |
add953ce HV |
250 | return 0; |
251 | } | |
252 | ||
2b14e031 | 253 | static int upd64031a_remove(struct i2c_client *client) |
add953ce | 254 | { |
09abd506 HV |
255 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
256 | ||
257 | v4l2_device_unregister_subdev(sd); | |
258 | kfree(to_state(sd)); | |
add953ce HV |
259 | return 0; |
260 | } | |
261 | ||
262 | /* ----------------------------------------------------------------------- */ | |
263 | ||
af294867 JD |
264 | static const struct i2c_device_id upd64031a_id[] = { |
265 | { "upd64031a", 0 }, | |
266 | { } | |
267 | }; | |
268 | MODULE_DEVICE_TABLE(i2c, upd64031a_id); | |
2b14e031 HV |
269 | |
270 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
271 | .name = "upd64031a", | |
272 | .driverid = I2C_DRIVERID_UPD64031A, | |
add953ce | 273 | .command = upd64031a_command, |
2b14e031 HV |
274 | .probe = upd64031a_probe, |
275 | .remove = upd64031a_remove, | |
af294867 | 276 | .id_table = upd64031a_id, |
add953ce | 277 | }; |