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add953ce HV |
1 | /* |
2 | * upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan | |
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 modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (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., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
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/upd64031a.h> |
33 | ||
79f998a7 | 34 | /* --------------------- read registers functions define -------------------- */ |
add953ce HV |
35 | |
36 | /* bit masks */ | |
37 | #define GR_MODE_MASK 0xc0 | |
38 | #define DIRECT_3DYCS_CONNECT_MASK 0xc0 | |
39 | #define SYNC_CIRCUIT_MASK 0xa0 | |
40 | ||
79f998a7 | 41 | /* -------------------------------------------------------------------------- */ |
add953ce HV |
42 | |
43 | MODULE_DESCRIPTION("uPD64031A driver"); | |
44 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
79f998a7 | 47 | static int debug; |
add953ce HV |
48 | module_param(debug, int, 0644); |
49 | ||
50 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
51 | ||
add953ce HV |
52 | |
53 | enum { | |
54 | R00 = 0, R01, R02, R03, R04, | |
55 | R05, R06, R07, R08, R09, | |
56 | R0A, R0B, R0C, R0D, R0E, R0F, | |
57 | /* unused registers | |
58 | R10, R11, R12, R13, R14, | |
59 | R15, R16, R17, | |
60 | */ | |
61 | TOT_REGS | |
62 | }; | |
63 | ||
64 | struct upd64031a_state { | |
65 | u8 regs[TOT_REGS]; | |
66 | u8 gr_mode; | |
67 | u8 direct_3dycs_connect; | |
68 | u8 ext_comp_sync; | |
69 | u8 ext_vert_sync; | |
70 | }; | |
71 | ||
72 | static u8 upd64031a_init[] = { | |
73 | 0x00, 0xb8, 0x48, 0xd2, 0xe6, | |
74 | 0x03, 0x10, 0x0b, 0xaf, 0x7f, | |
75 | 0x00, 0x00, 0x1d, 0x5e, 0x00, | |
76 | 0xd0 | |
77 | }; | |
78 | ||
79 | /* ------------------------------------------------------------------------ */ | |
80 | ||
81 | static u8 upd64031a_read(struct i2c_client *client, u8 reg) | |
82 | { | |
83 | u8 buf[2]; | |
84 | ||
85 | if (reg >= sizeof(buf)) | |
86 | return 0xff; | |
87 | i2c_master_recv(client, buf, 2); | |
88 | return buf[reg]; | |
89 | } | |
90 | ||
91 | /* ------------------------------------------------------------------------ */ | |
92 | ||
93 | static void upd64031a_write(struct i2c_client *client, u8 reg, u8 val) | |
94 | { | |
95 | u8 buf[2]; | |
96 | ||
97 | buf[0] = reg; | |
98 | buf[1] = val; | |
79f998a7 | 99 | v4l_dbg(1, debug, client, "write reg: %02X val: %02X\n", reg, val); |
add953ce HV |
100 | if (i2c_master_send(client, buf, 2) != 2) |
101 | v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val); | |
102 | } | |
103 | ||
104 | /* ------------------------------------------------------------------------ */ | |
105 | ||
106 | /* The input changed due to new input or channel changed */ | |
107 | static void upd64031a_change(struct i2c_client *client) | |
108 | { | |
109 | struct upd64031a_state *state = i2c_get_clientdata(client); | |
110 | u8 reg = state->regs[R00]; | |
111 | ||
112 | v4l_dbg(1, debug, client, "changed input or channel\n"); | |
113 | upd64031a_write(client, R00, reg | 0x10); | |
114 | upd64031a_write(client, R00, reg & ~0x10); | |
115 | } | |
116 | ||
117 | /* ------------------------------------------------------------------------ */ | |
118 | ||
79f998a7 | 119 | static int upd64031a_command(struct i2c_client *client, unsigned cmd, void *arg) |
add953ce HV |
120 | { |
121 | struct upd64031a_state *state = i2c_get_clientdata(client); | |
122 | struct v4l2_routing *route = arg; | |
123 | ||
124 | switch (cmd) { | |
125 | case VIDIOC_S_FREQUENCY: | |
126 | upd64031a_change(client); | |
127 | break; | |
128 | ||
129 | case VIDIOC_INT_G_VIDEO_ROUTING: | |
130 | route->input = (state->gr_mode >> 6) | | |
131 | (state->direct_3dycs_connect >> 4) | | |
132 | (state->ext_comp_sync >> 1) | | |
133 | (state->ext_vert_sync >> 2); | |
134 | route->output = 0; | |
135 | break; | |
136 | ||
137 | case VIDIOC_INT_S_VIDEO_ROUTING: | |
138 | { | |
139 | u8 r00, r05, r08; | |
140 | ||
141 | state->gr_mode = (route->input & 3) << 6; | |
142 | state->direct_3dycs_connect = (route->input & 0xc) << 4; | |
79f998a7 HV |
143 | state->ext_comp_sync = |
144 | (route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1; | |
145 | state->ext_vert_sync = | |
146 | (route->input & UPD64031A_VERTICAL_EXTERNAL) << 2; | |
add953ce HV |
147 | r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode; |
148 | r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) | | |
149 | state->ext_comp_sync | state->ext_vert_sync; | |
150 | r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) | | |
151 | state->direct_3dycs_connect; | |
152 | upd64031a_write(client, R00, r00); | |
153 | upd64031a_write(client, R05, r05); | |
154 | upd64031a_write(client, R08, r08); | |
155 | upd64031a_change(client); | |
156 | break; | |
157 | } | |
158 | ||
159 | case VIDIOC_LOG_STATUS: | |
160 | v4l_info(client, "Status: SA00=0x%02x SA01=0x%02x\n", | |
161 | upd64031a_read(client, 0), upd64031a_read(client, 1)); | |
162 | break; | |
163 | ||
164 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
52ebc763 | 165 | case VIDIOC_DBG_G_REGISTER: |
52ebc763 | 166 | case VIDIOC_DBG_S_REGISTER: |
add953ce HV |
167 | { |
168 | struct v4l2_register *reg = arg; | |
add953ce | 169 | |
79f998a7 HV |
170 | if (!v4l2_chip_match_i2c_client(client, |
171 | reg->match_type, reg->match_chip)) | |
add953ce HV |
172 | return -EINVAL; |
173 | if (!capable(CAP_SYS_ADMIN)) | |
174 | return -EPERM; | |
79f998a7 | 175 | if (cmd == VIDIOC_DBG_G_REGISTER) { |
62d50add | 176 | reg->val = upd64031a_read(client, reg->reg & 0xff); |
79f998a7 HV |
177 | break; |
178 | } | |
179 | upd64031a_write(client, reg->reg & 0xff, reg->val & 0xff); | |
add953ce HV |
180 | break; |
181 | } | |
182 | #endif | |
183 | ||
74cab31c | 184 | case VIDIOC_G_CHIP_IDENT: |
79f998a7 HV |
185 | return v4l2_chip_ident_i2c_client(client, arg, |
186 | V4L2_IDENT_UPD64031A, 0); | |
74cab31c | 187 | |
add953ce HV |
188 | default: |
189 | break; | |
190 | } | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /* ------------------------------------------------------------------------ */ | |
195 | ||
196 | /* i2c implementation */ | |
197 | ||
d2653e92 JD |
198 | static int upd64031a_probe(struct i2c_client *client, |
199 | const struct i2c_device_id *id) | |
add953ce | 200 | { |
add953ce HV |
201 | struct upd64031a_state *state; |
202 | int i; | |
203 | ||
2b14e031 | 204 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
188f3457 | 205 | return -EIO; |
add953ce | 206 | |
79f998a7 HV |
207 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
208 | client->addr << 1, client->adapter->name); | |
add953ce HV |
209 | |
210 | state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL); | |
79f998a7 | 211 | if (state == NULL) |
add953ce | 212 | return -ENOMEM; |
add953ce HV |
213 | i2c_set_clientdata(client, state); |
214 | memcpy(state->regs, upd64031a_init, sizeof(state->regs)); | |
215 | state->gr_mode = UPD64031A_GR_ON << 6; | |
216 | state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4; | |
217 | state->ext_comp_sync = state->ext_vert_sync = 0; | |
79f998a7 | 218 | for (i = 0; i < TOT_REGS; i++) |
add953ce | 219 | upd64031a_write(client, i, state->regs[i]); |
add953ce HV |
220 | return 0; |
221 | } | |
222 | ||
2b14e031 | 223 | static int upd64031a_remove(struct i2c_client *client) |
add953ce | 224 | { |
2b14e031 | 225 | kfree(i2c_get_clientdata(client)); |
add953ce HV |
226 | return 0; |
227 | } | |
228 | ||
229 | /* ----------------------------------------------------------------------- */ | |
230 | ||
af294867 JD |
231 | static const struct i2c_device_id upd64031a_id[] = { |
232 | { "upd64031a", 0 }, | |
233 | { } | |
234 | }; | |
235 | MODULE_DEVICE_TABLE(i2c, upd64031a_id); | |
2b14e031 HV |
236 | |
237 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
238 | .name = "upd64031a", | |
239 | .driverid = I2C_DRIVERID_UPD64031A, | |
add953ce | 240 | .command = upd64031a_command, |
2b14e031 HV |
241 | .probe = upd64031a_probe, |
242 | .remove = upd64031a_remove, | |
af294867 | 243 | .id_table = upd64031a_id, |
add953ce | 244 | }; |