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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 | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
21 | */ | |
22 | ||
23 | #include <linux/version.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/i2c.h> | |
27 | #include <linux/videodev2.h> | |
28 | #include <media/v4l2-common.h> | |
74cab31c | 29 | #include <media/v4l2-chip-ident.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 | ||
36 | static int debug = 0; | |
37 | module_param(debug, bool, 0644); | |
38 | ||
39 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
40 | ||
41 | static unsigned short normal_i2c[] = { 0xb8 >> 1, 0xba >> 1, I2C_CLIENT_END }; | |
42 | ||
43 | ||
44 | I2C_CLIENT_INSMOD; | |
45 | ||
46 | enum { | |
47 | R00 = 0, R01, R02, R03, R04, | |
48 | R05, R06, R07, R08, R09, | |
49 | R0A, R0B, R0C, R0D, R0E, R0F, | |
50 | R10, R11, R12, R13, R14, | |
51 | R15, R16, | |
52 | TOT_REGS | |
53 | }; | |
54 | ||
55 | struct upd64083_state { | |
56 | u8 mode; | |
57 | u8 ext_y_adc; | |
58 | u8 regs[TOT_REGS]; | |
59 | }; | |
60 | ||
61 | /* Initial values when used in combination with the | |
62 | NEC upd64031a ghost reduction chip. */ | |
63 | static u8 upd64083_init[] = { | |
64 | 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */ | |
65 | 0x36, 0xdd, 0x05, 0x56, 0x48, | |
66 | 0x00, 0x3a, 0xa0, 0x05, 0x08, | |
67 | 0x44, 0x60, 0x08, 0x52, 0xf8, | |
68 | 0x53, 0x60, 0x10 | |
69 | }; | |
70 | ||
71 | /* ------------------------------------------------------------------------ */ | |
72 | ||
73 | static void upd64083_log_status(struct i2c_client *client) | |
74 | { | |
75 | u8 buf[7]; | |
76 | ||
77 | i2c_master_recv(client, buf, 7); | |
78 | v4l_info(client, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x " | |
79 | "SA04=%02x SA05=%02x SA06=%02x\n", | |
80 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
81 | } | |
82 | ||
83 | /* ------------------------------------------------------------------------ */ | |
84 | ||
85 | static void upd64083_write(struct i2c_client *client, u8 reg, u8 val) | |
86 | { | |
87 | u8 buf[2]; | |
88 | ||
89 | buf[0] = reg; | |
90 | buf[1] = val; | |
91 | v4l_dbg(1, debug, client, "writing reg addr: %02x val: %02x\n", reg, val); | |
92 | if (i2c_master_send(client, buf, 2) != 2) | |
93 | v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val); | |
94 | } | |
95 | ||
96 | /* ------------------------------------------------------------------------ */ | |
97 | ||
98 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
99 | static u8 upd64083_read(struct i2c_client *client, u8 reg) | |
100 | { | |
101 | u8 buf[7]; | |
102 | ||
103 | if (reg >= sizeof(buf)) | |
104 | return 0xff; | |
105 | i2c_master_recv(client, buf, sizeof(buf)); | |
106 | return buf[reg]; | |
107 | } | |
108 | #endif | |
109 | ||
110 | /* ------------------------------------------------------------------------ */ | |
111 | ||
112 | static int upd64083_command(struct i2c_client *client, unsigned int cmd, void *arg) | |
113 | { | |
114 | struct upd64083_state *state = i2c_get_clientdata(client); | |
115 | struct v4l2_routing *route = arg; | |
116 | ||
117 | switch (cmd) { | |
118 | case VIDIOC_INT_G_VIDEO_ROUTING: | |
119 | route->input = (state->mode >> 6) | (state->ext_y_adc >> 3); | |
120 | route->output = 0; | |
121 | break; | |
122 | ||
123 | case VIDIOC_INT_S_VIDEO_ROUTING: | |
124 | { | |
125 | u8 r00, r02; | |
126 | ||
127 | if (route->input > 7 || (route->input & 6) == 6) | |
128 | return -EINVAL; | |
129 | state->mode = (route->input & 3) << 6; | |
130 | state->ext_y_adc = (route->input & UPD64083_EXT_Y_ADC) << 3; | |
131 | r00 = (state->regs[R00] & ~(3 << 6)) | state->mode; | |
132 | r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc; | |
133 | upd64083_write(client, R00, r00); | |
134 | upd64083_write(client, R02, r02); | |
135 | break; | |
136 | } | |
137 | ||
138 | case VIDIOC_LOG_STATUS: | |
139 | upd64083_log_status(client); | |
140 | break; | |
141 | ||
142 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
52ebc763 | 143 | case VIDIOC_DBG_G_REGISTER: |
52ebc763 | 144 | case VIDIOC_DBG_S_REGISTER: |
add953ce HV |
145 | { |
146 | struct v4l2_register *reg = arg; | |
add953ce | 147 | |
f3d092b8 | 148 | if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip)) |
add953ce HV |
149 | return -EINVAL; |
150 | if (!capable(CAP_SYS_ADMIN)) | |
151 | return -EPERM; | |
62d50add TP |
152 | if (cmd == VIDIOC_DBG_G_REGISTER) |
153 | reg->val = upd64083_read(client, reg->reg & 0xff); | |
154 | else | |
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: | |
161 | return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_UPD64083, 0); | |
162 | ||
add953ce HV |
163 | default: |
164 | break; | |
165 | } | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | /* ------------------------------------------------------------------------ */ | |
171 | ||
172 | /* i2c implementation */ | |
173 | ||
174 | static struct i2c_driver i2c_driver; | |
175 | ||
176 | static int upd64083_attach(struct i2c_adapter *adapter, int address, int kind) | |
177 | { | |
178 | struct i2c_client *client; | |
179 | struct upd64083_state *state; | |
180 | int i; | |
181 | ||
182 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
183 | return 0; | |
184 | ||
185 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); | |
186 | if (client == NULL) { | |
187 | return -ENOMEM; | |
188 | } | |
189 | ||
190 | client->addr = address; | |
191 | client->adapter = adapter; | |
192 | client->driver = &i2c_driver; | |
193 | snprintf(client->name, sizeof(client->name) - 1, "uPD64083"); | |
194 | ||
195 | v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name); | |
196 | ||
197 | state = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL); | |
198 | if (state == NULL) { | |
199 | kfree(client); | |
200 | return -ENOMEM; | |
201 | } | |
202 | i2c_set_clientdata(client, state); | |
203 | /* Initially assume that a ghost reduction chip is present */ | |
204 | state->mode = 0; /* YCS mode */ | |
205 | state->ext_y_adc = (1 << 5); | |
206 | memcpy(state->regs, upd64083_init, TOT_REGS); | |
207 | for (i = 0; i < TOT_REGS; i++) { | |
208 | upd64083_write(client, i, state->regs[i]); | |
209 | } | |
210 | i2c_attach_client(client); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | static int upd64083_probe(struct i2c_adapter *adapter) | |
216 | { | |
217 | if (adapter->class & I2C_CLASS_TV_ANALOG) | |
218 | return i2c_probe(adapter, &addr_data, upd64083_attach); | |
219 | return 0; | |
220 | } | |
221 | ||
222 | static int upd64083_detach(struct i2c_client *client) | |
223 | { | |
224 | int err; | |
225 | ||
226 | err = i2c_detach_client(client); | |
227 | if (err) | |
228 | return err; | |
229 | ||
230 | kfree(client); | |
231 | return 0; | |
232 | } | |
233 | ||
234 | /* ----------------------------------------------------------------------- */ | |
235 | ||
236 | /* i2c implementation */ | |
237 | static struct i2c_driver i2c_driver = { | |
238 | .driver = { | |
239 | .name = "upd64083", | |
240 | }, | |
241 | .id = I2C_DRIVERID_UPD64083, | |
242 | .attach_adapter = upd64083_probe, | |
243 | .detach_client = upd64083_detach, | |
244 | .command = upd64083_command, | |
245 | }; | |
246 | ||
247 | ||
248 | static int __init upd64083_init_module(void) | |
249 | { | |
250 | return i2c_add_driver(&i2c_driver); | |
251 | } | |
252 | ||
253 | static void __exit upd64083_exit_module(void) | |
254 | { | |
255 | i2c_del_driver(&i2c_driver); | |
256 | } | |
257 | ||
258 | module_init(upd64083_init_module); | |
259 | module_exit(upd64083_exit_module); |