Commit | Line | Data |
---|---|---|
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> | |
29 | #include <media/v4l2-common.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 { | |
54 | u8 mode; | |
55 | u8 ext_y_adc; | |
56 | u8 regs[TOT_REGS]; | |
57 | }; | |
58 | ||
59 | /* Initial values when used in combination with the | |
60 | NEC upd64031a ghost reduction chip. */ | |
61 | static u8 upd64083_init[] = { | |
62 | 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */ | |
63 | 0x36, 0xdd, 0x05, 0x56, 0x48, | |
64 | 0x00, 0x3a, 0xa0, 0x05, 0x08, | |
65 | 0x44, 0x60, 0x08, 0x52, 0xf8, | |
66 | 0x53, 0x60, 0x10 | |
67 | }; | |
68 | ||
69 | /* ------------------------------------------------------------------------ */ | |
70 | ||
71 | static void upd64083_log_status(struct i2c_client *client) | |
72 | { | |
73 | u8 buf[7]; | |
74 | ||
75 | i2c_master_recv(client, buf, 7); | |
76 | v4l_info(client, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x " | |
77 | "SA04=%02x SA05=%02x SA06=%02x\n", | |
78 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
79 | } | |
80 | ||
81 | /* ------------------------------------------------------------------------ */ | |
82 | ||
83 | static void upd64083_write(struct i2c_client *client, u8 reg, u8 val) | |
84 | { | |
85 | u8 buf[2]; | |
86 | ||
87 | buf[0] = reg; | |
88 | buf[1] = val; | |
8c9fc8de | 89 | v4l_dbg(1, debug, client, "write reg: %02x val: %02x\n", reg, val); |
add953ce HV |
90 | if (i2c_master_send(client, buf, 2) != 2) |
91 | v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val); | |
92 | } | |
93 | ||
94 | /* ------------------------------------------------------------------------ */ | |
95 | ||
96 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
97 | static u8 upd64083_read(struct i2c_client *client, u8 reg) | |
98 | { | |
99 | u8 buf[7]; | |
100 | ||
101 | if (reg >= sizeof(buf)) | |
102 | return 0xff; | |
103 | i2c_master_recv(client, buf, sizeof(buf)); | |
104 | return buf[reg]; | |
105 | } | |
106 | #endif | |
107 | ||
108 | /* ------------------------------------------------------------------------ */ | |
109 | ||
8c9fc8de | 110 | static int upd64083_command(struct i2c_client *client, unsigned cmd, void *arg) |
add953ce HV |
111 | { |
112 | struct upd64083_state *state = i2c_get_clientdata(client); | |
113 | struct v4l2_routing *route = arg; | |
114 | ||
115 | switch (cmd) { | |
116 | case VIDIOC_INT_G_VIDEO_ROUTING: | |
117 | route->input = (state->mode >> 6) | (state->ext_y_adc >> 3); | |
118 | route->output = 0; | |
119 | break; | |
120 | ||
121 | case VIDIOC_INT_S_VIDEO_ROUTING: | |
122 | { | |
123 | u8 r00, r02; | |
124 | ||
125 | if (route->input > 7 || (route->input & 6) == 6) | |
126 | return -EINVAL; | |
127 | state->mode = (route->input & 3) << 6; | |
128 | state->ext_y_adc = (route->input & UPD64083_EXT_Y_ADC) << 3; | |
129 | r00 = (state->regs[R00] & ~(3 << 6)) | state->mode; | |
130 | r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc; | |
131 | upd64083_write(client, R00, r00); | |
132 | upd64083_write(client, R02, r02); | |
133 | break; | |
134 | } | |
135 | ||
136 | case VIDIOC_LOG_STATUS: | |
137 | upd64083_log_status(client); | |
138 | break; | |
139 | ||
140 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
52ebc763 | 141 | case VIDIOC_DBG_G_REGISTER: |
52ebc763 | 142 | case VIDIOC_DBG_S_REGISTER: |
add953ce HV |
143 | { |
144 | struct v4l2_register *reg = arg; | |
add953ce | 145 | |
8c9fc8de HV |
146 | if (!v4l2_chip_match_i2c_client(client, |
147 | reg->match_type, reg->match_chip)) | |
add953ce HV |
148 | return -EINVAL; |
149 | if (!capable(CAP_SYS_ADMIN)) | |
150 | return -EPERM; | |
8c9fc8de | 151 | if (cmd == VIDIOC_DBG_G_REGISTER) { |
62d50add | 152 | reg->val = upd64083_read(client, reg->reg & 0xff); |
8c9fc8de HV |
153 | break; |
154 | } | |
155 | upd64083_write(client, reg->reg & 0xff, reg->val & 0xff); | |
add953ce HV |
156 | break; |
157 | } | |
158 | #endif | |
74cab31c HV |
159 | |
160 | case VIDIOC_G_CHIP_IDENT: | |
8c9fc8de HV |
161 | return v4l2_chip_ident_i2c_client(client, arg, |
162 | V4L2_IDENT_UPD64083, 0); | |
74cab31c | 163 | |
add953ce HV |
164 | default: |
165 | break; | |
166 | } | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | /* ------------------------------------------------------------------------ */ | |
172 | ||
173 | /* i2c implementation */ | |
174 | ||
d2653e92 JD |
175 | static int upd64083_probe(struct i2c_client *client, |
176 | const struct i2c_device_id *id) | |
add953ce | 177 | { |
add953ce HV |
178 | struct upd64083_state *state; |
179 | int i; | |
180 | ||
26666977 | 181 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 182 | return -EIO; |
add953ce | 183 | |
8c9fc8de HV |
184 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
185 | client->addr << 1, client->adapter->name); | |
add953ce HV |
186 | |
187 | state = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL); | |
8c9fc8de | 188 | if (state == NULL) |
add953ce | 189 | return -ENOMEM; |
add953ce HV |
190 | i2c_set_clientdata(client, state); |
191 | /* Initially assume that a ghost reduction chip is present */ | |
192 | state->mode = 0; /* YCS mode */ | |
193 | state->ext_y_adc = (1 << 5); | |
194 | memcpy(state->regs, upd64083_init, TOT_REGS); | |
8c9fc8de | 195 | for (i = 0; i < TOT_REGS; i++) |
add953ce | 196 | upd64083_write(client, i, state->regs[i]); |
add953ce HV |
197 | return 0; |
198 | } | |
199 | ||
26666977 | 200 | static int upd64083_remove(struct i2c_client *client) |
add953ce | 201 | { |
26666977 | 202 | kfree(i2c_get_clientdata(client)); |
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 HV |
213 | |
214 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
215 | .name = "upd64083", | |
216 | .driverid = I2C_DRIVERID_UPD64083, | |
add953ce | 217 | .command = upd64083_command, |
26666977 HV |
218 | .probe = upd64083_probe, |
219 | .remove = upd64083_remove, | |
af294867 | 220 | .id_table = upd64083_id, |
add953ce | 221 | }; |