Commit | Line | Data |
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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 | ||
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> |
cc7ca3ea | 29 | #include <media/v4l2-device.h> |
74cab31c | 30 | #include <media/v4l2-chip-ident.h> |
add953ce HV |
31 | #include <media/upd64083.h> |
32 | ||
33 | MODULE_DESCRIPTION("uPD64083 driver"); | |
34 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
35 | MODULE_LICENSE("GPL"); | |
36 | ||
90ab5ee9 | 37 | static bool debug; |
add953ce HV |
38 | module_param(debug, bool, 0644); |
39 | ||
40 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
41 | ||
add953ce HV |
42 | |
43 | enum { | |
44 | R00 = 0, R01, R02, R03, R04, | |
45 | R05, R06, R07, R08, R09, | |
46 | R0A, R0B, R0C, R0D, R0E, R0F, | |
47 | R10, R11, R12, R13, R14, | |
48 | R15, R16, | |
49 | TOT_REGS | |
50 | }; | |
51 | ||
52 | struct upd64083_state { | |
cc7ca3ea | 53 | struct v4l2_subdev sd; |
add953ce HV |
54 | u8 mode; |
55 | u8 ext_y_adc; | |
56 | u8 regs[TOT_REGS]; | |
57 | }; | |
58 | ||
cc7ca3ea HV |
59 | static inline struct upd64083_state *to_state(struct v4l2_subdev *sd) |
60 | { | |
61 | return container_of(sd, struct upd64083_state, sd); | |
62 | } | |
63 | ||
add953ce HV |
64 | /* Initial values when used in combination with the |
65 | NEC upd64031a ghost reduction chip. */ | |
66 | static u8 upd64083_init[] = { | |
67 | 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */ | |
68 | 0x36, 0xdd, 0x05, 0x56, 0x48, | |
69 | 0x00, 0x3a, 0xa0, 0x05, 0x08, | |
70 | 0x44, 0x60, 0x08, 0x52, 0xf8, | |
71 | 0x53, 0x60, 0x10 | |
72 | }; | |
73 | ||
74 | /* ------------------------------------------------------------------------ */ | |
75 | ||
cc7ca3ea | 76 | static void upd64083_write(struct v4l2_subdev *sd, u8 reg, u8 val) |
add953ce | 77 | { |
cc7ca3ea | 78 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
79 | u8 buf[2]; |
80 | ||
81 | buf[0] = reg; | |
82 | buf[1] = val; | |
cc7ca3ea | 83 | v4l2_dbg(1, debug, sd, "write reg: %02x val: %02x\n", reg, val); |
add953ce | 84 | if (i2c_master_send(client, buf, 2) != 2) |
cc7ca3ea | 85 | v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val); |
add953ce HV |
86 | } |
87 | ||
88 | /* ------------------------------------------------------------------------ */ | |
89 | ||
90 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
cc7ca3ea | 91 | static u8 upd64083_read(struct v4l2_subdev *sd, u8 reg) |
add953ce | 92 | { |
cc7ca3ea | 93 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
94 | u8 buf[7]; |
95 | ||
96 | if (reg >= sizeof(buf)) | |
97 | return 0xff; | |
98 | i2c_master_recv(client, buf, sizeof(buf)); | |
99 | return buf[reg]; | |
100 | } | |
101 | #endif | |
102 | ||
103 | /* ------------------------------------------------------------------------ */ | |
104 | ||
5325b427 HV |
105 | static int upd64083_s_routing(struct v4l2_subdev *sd, |
106 | u32 input, u32 output, u32 config) | |
add953ce | 107 | { |
cc7ca3ea HV |
108 | struct upd64083_state *state = to_state(sd); |
109 | u8 r00, r02; | |
110 | ||
5325b427 | 111 | if (input > 7 || (input & 6) == 6) |
cc7ca3ea | 112 | return -EINVAL; |
5325b427 HV |
113 | state->mode = (input & 3) << 6; |
114 | state->ext_y_adc = (input & UPD64083_EXT_Y_ADC) << 3; | |
cc7ca3ea HV |
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 | |
aecde8b5 | 123 | static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
cc7ca3ea HV |
124 | { |
125 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
126 | ||
aecde8b5 | 127 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
cc7ca3ea HV |
128 | return -EINVAL; |
129 | if (!capable(CAP_SYS_ADMIN)) | |
130 | return -EPERM; | |
131 | reg->val = upd64083_read(sd, reg->reg & 0xff); | |
aecde8b5 | 132 | reg->size = 1; |
cc7ca3ea HV |
133 | return 0; |
134 | } | |
add953ce | 135 | |
977ba3b1 | 136 | static int upd64083_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) |
cc7ca3ea HV |
137 | { |
138 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
139 | ||
aecde8b5 | 140 | if (!v4l2_chip_match_i2c_client(client, ®->match)) |
cc7ca3ea HV |
141 | return -EINVAL; |
142 | if (!capable(CAP_SYS_ADMIN)) | |
143 | return -EPERM; | |
144 | upd64083_write(sd, reg->reg & 0xff, reg->val & 0xff); | |
145 | return 0; | |
146 | } | |
add953ce | 147 | #endif |
74cab31c | 148 | |
aecde8b5 | 149 | static int upd64083_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
cc7ca3ea HV |
150 | { |
151 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
152 | ||
153 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_UPD64083, 0); | |
154 | } | |
74cab31c | 155 | |
cc7ca3ea HV |
156 | static int upd64083_log_status(struct v4l2_subdev *sd) |
157 | { | |
158 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
159 | u8 buf[7]; | |
add953ce | 160 | |
cc7ca3ea HV |
161 | i2c_master_recv(client, buf, 7); |
162 | v4l2_info(sd, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x " | |
163 | "SA04=%02x SA05=%02x SA06=%02x\n", | |
164 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
add953ce HV |
165 | return 0; |
166 | } | |
167 | ||
cc7ca3ea HV |
168 | /* ----------------------------------------------------------------------- */ |
169 | ||
170 | static const struct v4l2_subdev_core_ops upd64083_core_ops = { | |
171 | .log_status = upd64083_log_status, | |
172 | .g_chip_ident = upd64083_g_chip_ident, | |
173 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
174 | .g_register = upd64083_g_register, | |
175 | .s_register = upd64083_s_register, | |
176 | #endif | |
177 | }; | |
178 | ||
179 | static const struct v4l2_subdev_video_ops upd64083_video_ops = { | |
180 | .s_routing = upd64083_s_routing, | |
181 | }; | |
182 | ||
183 | static const struct v4l2_subdev_ops upd64083_ops = { | |
184 | .core = &upd64083_core_ops, | |
185 | .video = &upd64083_video_ops, | |
186 | }; | |
187 | ||
add953ce HV |
188 | /* ------------------------------------------------------------------------ */ |
189 | ||
190 | /* i2c implementation */ | |
191 | ||
d2653e92 JD |
192 | static int upd64083_probe(struct i2c_client *client, |
193 | const struct i2c_device_id *id) | |
add953ce | 194 | { |
add953ce | 195 | struct upd64083_state *state; |
cc7ca3ea | 196 | struct v4l2_subdev *sd; |
add953ce HV |
197 | int i; |
198 | ||
26666977 | 199 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 200 | return -EIO; |
add953ce | 201 | |
8c9fc8de HV |
202 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
203 | client->addr << 1, client->adapter->name); | |
add953ce | 204 | |
80845a33 | 205 | state = kzalloc(sizeof(struct upd64083_state), GFP_KERNEL); |
8c9fc8de | 206 | if (state == NULL) |
add953ce | 207 | return -ENOMEM; |
cc7ca3ea HV |
208 | sd = &state->sd; |
209 | v4l2_i2c_subdev_init(sd, client, &upd64083_ops); | |
add953ce HV |
210 | /* Initially assume that a ghost reduction chip is present */ |
211 | state->mode = 0; /* YCS mode */ | |
212 | state->ext_y_adc = (1 << 5); | |
213 | memcpy(state->regs, upd64083_init, TOT_REGS); | |
8c9fc8de | 214 | for (i = 0; i < TOT_REGS; i++) |
cc7ca3ea | 215 | upd64083_write(sd, i, state->regs[i]); |
add953ce HV |
216 | return 0; |
217 | } | |
218 | ||
26666977 | 219 | static int upd64083_remove(struct i2c_client *client) |
add953ce | 220 | { |
cc7ca3ea HV |
221 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
222 | ||
223 | v4l2_device_unregister_subdev(sd); | |
224 | kfree(to_state(sd)); | |
add953ce HV |
225 | return 0; |
226 | } | |
227 | ||
228 | /* ----------------------------------------------------------------------- */ | |
229 | ||
af294867 JD |
230 | static const struct i2c_device_id upd64083_id[] = { |
231 | { "upd64083", 0 }, | |
232 | { } | |
233 | }; | |
234 | MODULE_DEVICE_TABLE(i2c, upd64083_id); | |
26666977 | 235 | |
37a0cfcb HV |
236 | static struct i2c_driver upd64083_driver = { |
237 | .driver = { | |
238 | .owner = THIS_MODULE, | |
239 | .name = "upd64083", | |
240 | }, | |
241 | .probe = upd64083_probe, | |
242 | .remove = upd64083_remove, | |
243 | .id_table = upd64083_id, | |
add953ce | 244 | }; |
37a0cfcb | 245 | |
c6e8d86f | 246 | module_i2c_driver(upd64083_driver); |