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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> |
add953ce HV |
30 | #include <media/upd64083.h> |
31 | ||
32 | MODULE_DESCRIPTION("uPD64083 driver"); | |
33 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
34 | MODULE_LICENSE("GPL"); | |
35 | ||
90ab5ee9 | 36 | static bool debug; |
add953ce HV |
37 | module_param(debug, bool, 0644); |
38 | ||
39 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
40 | ||
add953ce HV |
41 | |
42 | enum { | |
43 | R00 = 0, R01, R02, R03, R04, | |
44 | R05, R06, R07, R08, R09, | |
45 | R0A, R0B, R0C, R0D, R0E, R0F, | |
46 | R10, R11, R12, R13, R14, | |
47 | R15, R16, | |
48 | TOT_REGS | |
49 | }; | |
50 | ||
51 | struct upd64083_state { | |
cc7ca3ea | 52 | struct v4l2_subdev sd; |
add953ce HV |
53 | u8 mode; |
54 | u8 ext_y_adc; | |
55 | u8 regs[TOT_REGS]; | |
56 | }; | |
57 | ||
cc7ca3ea HV |
58 | static inline struct upd64083_state *to_state(struct v4l2_subdev *sd) |
59 | { | |
60 | return container_of(sd, struct upd64083_state, sd); | |
61 | } | |
62 | ||
add953ce HV |
63 | /* Initial values when used in combination with the |
64 | NEC upd64031a ghost reduction chip. */ | |
65 | static u8 upd64083_init[] = { | |
66 | 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */ | |
67 | 0x36, 0xdd, 0x05, 0x56, 0x48, | |
68 | 0x00, 0x3a, 0xa0, 0x05, 0x08, | |
69 | 0x44, 0x60, 0x08, 0x52, 0xf8, | |
70 | 0x53, 0x60, 0x10 | |
71 | }; | |
72 | ||
73 | /* ------------------------------------------------------------------------ */ | |
74 | ||
cc7ca3ea | 75 | static void upd64083_write(struct v4l2_subdev *sd, u8 reg, u8 val) |
add953ce | 76 | { |
cc7ca3ea | 77 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
78 | u8 buf[2]; |
79 | ||
80 | buf[0] = reg; | |
81 | buf[1] = val; | |
cc7ca3ea | 82 | v4l2_dbg(1, debug, sd, "write reg: %02x val: %02x\n", reg, val); |
add953ce | 83 | if (i2c_master_send(client, buf, 2) != 2) |
cc7ca3ea | 84 | v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val); |
add953ce HV |
85 | } |
86 | ||
87 | /* ------------------------------------------------------------------------ */ | |
88 | ||
89 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
cc7ca3ea | 90 | static u8 upd64083_read(struct v4l2_subdev *sd, u8 reg) |
add953ce | 91 | { |
cc7ca3ea | 92 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
add953ce HV |
93 | u8 buf[7]; |
94 | ||
95 | if (reg >= sizeof(buf)) | |
96 | return 0xff; | |
97 | i2c_master_recv(client, buf, sizeof(buf)); | |
98 | return buf[reg]; | |
99 | } | |
100 | #endif | |
101 | ||
102 | /* ------------------------------------------------------------------------ */ | |
103 | ||
5325b427 HV |
104 | static int upd64083_s_routing(struct v4l2_subdev *sd, |
105 | u32 input, u32 output, u32 config) | |
add953ce | 106 | { |
cc7ca3ea HV |
107 | struct upd64083_state *state = to_state(sd); |
108 | u8 r00, r02; | |
109 | ||
5325b427 | 110 | if (input > 7 || (input & 6) == 6) |
cc7ca3ea | 111 | return -EINVAL; |
5325b427 HV |
112 | state->mode = (input & 3) << 6; |
113 | state->ext_y_adc = (input & UPD64083_EXT_Y_ADC) << 3; | |
cc7ca3ea HV |
114 | r00 = (state->regs[R00] & ~(3 << 6)) | state->mode; |
115 | r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc; | |
116 | upd64083_write(sd, R00, r00); | |
117 | upd64083_write(sd, R02, r02); | |
118 | return 0; | |
119 | } | |
add953ce HV |
120 | |
121 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
aecde8b5 | 122 | static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) |
cc7ca3ea | 123 | { |
cc7ca3ea | 124 | reg->val = upd64083_read(sd, reg->reg & 0xff); |
aecde8b5 | 125 | reg->size = 1; |
cc7ca3ea HV |
126 | return 0; |
127 | } | |
add953ce | 128 | |
977ba3b1 | 129 | static int upd64083_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) |
cc7ca3ea | 130 | { |
cc7ca3ea HV |
131 | upd64083_write(sd, reg->reg & 0xff, reg->val & 0xff); |
132 | return 0; | |
133 | } | |
add953ce | 134 | #endif |
74cab31c | 135 | |
cc7ca3ea HV |
136 | static int upd64083_log_status(struct v4l2_subdev *sd) |
137 | { | |
138 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
139 | u8 buf[7]; | |
add953ce | 140 | |
cc7ca3ea HV |
141 | i2c_master_recv(client, buf, 7); |
142 | v4l2_info(sd, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x " | |
143 | "SA04=%02x SA05=%02x SA06=%02x\n", | |
144 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
add953ce HV |
145 | return 0; |
146 | } | |
147 | ||
cc7ca3ea HV |
148 | /* ----------------------------------------------------------------------- */ |
149 | ||
150 | static const struct v4l2_subdev_core_ops upd64083_core_ops = { | |
151 | .log_status = upd64083_log_status, | |
cc7ca3ea HV |
152 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
153 | .g_register = upd64083_g_register, | |
154 | .s_register = upd64083_s_register, | |
155 | #endif | |
156 | }; | |
157 | ||
158 | static const struct v4l2_subdev_video_ops upd64083_video_ops = { | |
159 | .s_routing = upd64083_s_routing, | |
160 | }; | |
161 | ||
162 | static const struct v4l2_subdev_ops upd64083_ops = { | |
163 | .core = &upd64083_core_ops, | |
164 | .video = &upd64083_video_ops, | |
165 | }; | |
166 | ||
add953ce HV |
167 | /* ------------------------------------------------------------------------ */ |
168 | ||
169 | /* i2c implementation */ | |
170 | ||
d2653e92 JD |
171 | static int upd64083_probe(struct i2c_client *client, |
172 | const struct i2c_device_id *id) | |
add953ce | 173 | { |
add953ce | 174 | struct upd64083_state *state; |
cc7ca3ea | 175 | struct v4l2_subdev *sd; |
add953ce HV |
176 | int i; |
177 | ||
26666977 | 178 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 179 | return -EIO; |
add953ce | 180 | |
8c9fc8de HV |
181 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
182 | client->addr << 1, client->adapter->name); | |
add953ce | 183 | |
c02b211d | 184 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
8c9fc8de | 185 | if (state == NULL) |
add953ce | 186 | return -ENOMEM; |
cc7ca3ea HV |
187 | sd = &state->sd; |
188 | v4l2_i2c_subdev_init(sd, client, &upd64083_ops); | |
add953ce HV |
189 | /* Initially assume that a ghost reduction chip is present */ |
190 | state->mode = 0; /* YCS mode */ | |
191 | state->ext_y_adc = (1 << 5); | |
192 | memcpy(state->regs, upd64083_init, TOT_REGS); | |
8c9fc8de | 193 | for (i = 0; i < TOT_REGS; i++) |
cc7ca3ea | 194 | upd64083_write(sd, i, state->regs[i]); |
add953ce HV |
195 | return 0; |
196 | } | |
197 | ||
26666977 | 198 | static int upd64083_remove(struct i2c_client *client) |
add953ce | 199 | { |
cc7ca3ea HV |
200 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
201 | ||
202 | v4l2_device_unregister_subdev(sd); | |
add953ce HV |
203 | return 0; |
204 | } | |
205 | ||
206 | /* ----------------------------------------------------------------------- */ | |
207 | ||
af294867 JD |
208 | static const struct i2c_device_id upd64083_id[] = { |
209 | { "upd64083", 0 }, | |
210 | { } | |
211 | }; | |
212 | MODULE_DEVICE_TABLE(i2c, upd64083_id); | |
26666977 | 213 | |
37a0cfcb HV |
214 | static struct i2c_driver upd64083_driver = { |
215 | .driver = { | |
216 | .owner = THIS_MODULE, | |
217 | .name = "upd64083", | |
218 | }, | |
219 | .probe = upd64083_probe, | |
220 | .remove = upd64083_remove, | |
221 | .id_table = upd64083_id, | |
add953ce | 222 | }; |
37a0cfcb | 223 | |
c6e8d86f | 224 | module_i2c_driver(upd64083_driver); |