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add953ce HV |
1 | /* |
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 | |
8c9fc8de HV |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
21 | * 02110-1301, USA. | |
add953ce HV |
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> | |
cc7ca3ea | 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/upd64083.h> |
33 | ||
34 | MODULE_DESCRIPTION("uPD64083 driver"); | |
35 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
8c9fc8de | 38 | static int debug; |
add953ce HV |
39 | module_param(debug, bool, 0644); |
40 | ||
41 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
42 | ||
add953ce HV |
43 | |
44 | enum { | |
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 | ||
53 | struct upd64083_state { | |
cc7ca3ea | 54 | struct v4l2_subdev sd; |
add953ce HV |
55 | u8 mode; |
56 | u8 ext_y_adc; | |
57 | u8 regs[TOT_REGS]; | |
58 | }; | |
59 | ||
cc7ca3ea HV |
60 | static inline struct upd64083_state *to_state(struct v4l2_subdev *sd) |
61 | { | |
62 | return container_of(sd, struct upd64083_state, sd); | |
63 | } | |
64 | ||
add953ce HV |
65 | /* Initial values when used in combination with the |
66 | NEC upd64031a ghost reduction chip. */ | |
67 | static u8 upd64083_init[] = { | |
68 | 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */ | |
69 | 0x36, 0xdd, 0x05, 0x56, 0x48, | |
70 | 0x00, 0x3a, 0xa0, 0x05, 0x08, | |
71 | 0x44, 0x60, 0x08, 0x52, 0xf8, | |
72 | 0x53, 0x60, 0x10 | |
73 | }; | |
74 | ||
75 | /* ------------------------------------------------------------------------ */ | |
76 | ||
cc7ca3ea | 77 | static void upd64083_write(struct v4l2_subdev *sd, u8 reg, u8 val) |
add953ce | 78 | { |
cc7ca3ea | 79 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
80 | u8 buf[2]; |
81 | ||
82 | buf[0] = reg; | |
83 | buf[1] = val; | |
cc7ca3ea | 84 | v4l2_dbg(1, debug, sd, "write reg: %02x val: %02x\n", reg, val); |
add953ce | 85 | if (i2c_master_send(client, buf, 2) != 2) |
cc7ca3ea | 86 | v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val); |
add953ce HV |
87 | } |
88 | ||
89 | /* ------------------------------------------------------------------------ */ | |
90 | ||
91 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
cc7ca3ea | 92 | static u8 upd64083_read(struct v4l2_subdev *sd, u8 reg) |
add953ce | 93 | { |
cc7ca3ea | 94 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
95 | u8 buf[7]; |
96 | ||
97 | if (reg >= sizeof(buf)) | |
98 | return 0xff; | |
99 | i2c_master_recv(client, buf, sizeof(buf)); | |
100 | return buf[reg]; | |
101 | } | |
102 | #endif | |
103 | ||
104 | /* ------------------------------------------------------------------------ */ | |
105 | ||
cc7ca3ea | 106 | static int upd64083_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route) |
add953ce | 107 | { |
cc7ca3ea HV |
108 | struct upd64083_state *state = to_state(sd); |
109 | u8 r00, r02; | |
110 | ||
111 | if (route->input > 7 || (route->input & 6) == 6) | |
112 | return -EINVAL; | |
113 | state->mode = (route->input & 3) << 6; | |
114 | state->ext_y_adc = (route->input & UPD64083_EXT_Y_ADC) << 3; | |
115 | r00 = (state->regs[R00] & ~(3 << 6)) | state->mode; | |
116 | r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc; | |
117 | upd64083_write(sd, R00, r00); | |
118 | upd64083_write(sd, R02, r02); | |
119 | return 0; | |
120 | } | |
add953ce HV |
121 | |
122 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
cc7ca3ea HV |
123 | static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg) |
124 | { | |
125 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
126 | ||
127 | if (!v4l2_chip_match_i2c_client(client, | |
128 | reg->match_type, reg->match_chip)) | |
129 | return -EINVAL; | |
130 | if (!capable(CAP_SYS_ADMIN)) | |
131 | return -EPERM; | |
132 | reg->val = upd64083_read(sd, reg->reg & 0xff); | |
133 | return 0; | |
134 | } | |
add953ce | 135 | |
cc7ca3ea HV |
136 | static int upd64083_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg) |
137 | { | |
138 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
139 | ||
140 | if (!v4l2_chip_match_i2c_client(client, | |
8c9fc8de | 141 | reg->match_type, reg->match_chip)) |
cc7ca3ea HV |
142 | return -EINVAL; |
143 | if (!capable(CAP_SYS_ADMIN)) | |
144 | return -EPERM; | |
145 | upd64083_write(sd, reg->reg & 0xff, reg->val & 0xff); | |
146 | return 0; | |
147 | } | |
add953ce | 148 | #endif |
74cab31c | 149 | |
cc7ca3ea HV |
150 | static int upd64083_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_UPD64083, 0); | |
155 | } | |
74cab31c | 156 | |
cc7ca3ea HV |
157 | static int upd64083_log_status(struct v4l2_subdev *sd) |
158 | { | |
159 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
160 | u8 buf[7]; | |
add953ce | 161 | |
cc7ca3ea HV |
162 | i2c_master_recv(client, buf, 7); |
163 | v4l2_info(sd, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x " | |
164 | "SA04=%02x SA05=%02x SA06=%02x\n", | |
165 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
add953ce HV |
166 | return 0; |
167 | } | |
168 | ||
cc7ca3ea HV |
169 | static int upd64083_command(struct i2c_client *client, unsigned cmd, void *arg) |
170 | { | |
171 | return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg); | |
172 | } | |
173 | ||
174 | /* ----------------------------------------------------------------------- */ | |
175 | ||
176 | static const struct v4l2_subdev_core_ops upd64083_core_ops = { | |
177 | .log_status = upd64083_log_status, | |
178 | .g_chip_ident = upd64083_g_chip_ident, | |
179 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
180 | .g_register = upd64083_g_register, | |
181 | .s_register = upd64083_s_register, | |
182 | #endif | |
183 | }; | |
184 | ||
185 | static const struct v4l2_subdev_video_ops upd64083_video_ops = { | |
186 | .s_routing = upd64083_s_routing, | |
187 | }; | |
188 | ||
189 | static const struct v4l2_subdev_ops upd64083_ops = { | |
190 | .core = &upd64083_core_ops, | |
191 | .video = &upd64083_video_ops, | |
192 | }; | |
193 | ||
add953ce HV |
194 | /* ------------------------------------------------------------------------ */ |
195 | ||
196 | /* i2c implementation */ | |
197 | ||
d2653e92 JD |
198 | static int upd64083_probe(struct i2c_client *client, |
199 | const struct i2c_device_id *id) | |
add953ce | 200 | { |
add953ce | 201 | struct upd64083_state *state; |
cc7ca3ea | 202 | struct v4l2_subdev *sd; |
add953ce HV |
203 | int i; |
204 | ||
26666977 | 205 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 206 | return -EIO; |
add953ce | 207 | |
8c9fc8de HV |
208 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
209 | client->addr << 1, client->adapter->name); | |
add953ce HV |
210 | |
211 | state = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL); | |
8c9fc8de | 212 | if (state == NULL) |
add953ce | 213 | return -ENOMEM; |
cc7ca3ea HV |
214 | sd = &state->sd; |
215 | v4l2_i2c_subdev_init(sd, client, &upd64083_ops); | |
add953ce HV |
216 | /* Initially assume that a ghost reduction chip is present */ |
217 | state->mode = 0; /* YCS mode */ | |
218 | state->ext_y_adc = (1 << 5); | |
219 | memcpy(state->regs, upd64083_init, TOT_REGS); | |
8c9fc8de | 220 | for (i = 0; i < TOT_REGS; i++) |
cc7ca3ea | 221 | upd64083_write(sd, i, state->regs[i]); |
add953ce HV |
222 | return 0; |
223 | } | |
224 | ||
26666977 | 225 | static int upd64083_remove(struct i2c_client *client) |
add953ce | 226 | { |
cc7ca3ea HV |
227 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
228 | ||
229 | v4l2_device_unregister_subdev(sd); | |
230 | kfree(to_state(sd)); | |
add953ce HV |
231 | return 0; |
232 | } | |
233 | ||
234 | /* ----------------------------------------------------------------------- */ | |
235 | ||
af294867 JD |
236 | static const struct i2c_device_id upd64083_id[] = { |
237 | { "upd64083", 0 }, | |
238 | { } | |
239 | }; | |
240 | MODULE_DEVICE_TABLE(i2c, upd64083_id); | |
26666977 HV |
241 | |
242 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
243 | .name = "upd64083", | |
244 | .driverid = I2C_DRIVERID_UPD64083, | |
add953ce | 245 | .command = upd64083_command, |
26666977 HV |
246 | .probe = upd64083_probe, |
247 | .remove = upd64083_remove, | |
af294867 | 248 | .id_table = upd64083_id, |
add953ce | 249 | }; |