]>
Commit | Line | Data |
---|---|---|
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> |
2b14e031 | 31 | #include <media/v4l2-i2c-drv-legacy.h> |
add953ce HV |
32 | #include <media/upd64031a.h> |
33 | ||
34 | // --------------------- read registers functions define ----------------------- | |
35 | ||
36 | /* bit masks */ | |
37 | #define GR_MODE_MASK 0xc0 | |
38 | #define DIRECT_3DYCS_CONNECT_MASK 0xc0 | |
39 | #define SYNC_CIRCUIT_MASK 0xa0 | |
40 | ||
41 | // ----------------------------------------------------------------------------- | |
42 | ||
43 | MODULE_DESCRIPTION("uPD64031A driver"); | |
44 | MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil"); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
47 | static int debug = 0; | |
48 | module_param(debug, int, 0644); | |
49 | ||
50 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
51 | ||
52 | static unsigned short normal_i2c[] = { 0x24 >> 1, 0x26 >> 1, I2C_CLIENT_END }; | |
53 | ||
54 | ||
55 | I2C_CLIENT_INSMOD; | |
56 | ||
57 | enum { | |
58 | R00 = 0, R01, R02, R03, R04, | |
59 | R05, R06, R07, R08, R09, | |
60 | R0A, R0B, R0C, R0D, R0E, R0F, | |
61 | /* unused registers | |
62 | R10, R11, R12, R13, R14, | |
63 | R15, R16, R17, | |
64 | */ | |
65 | TOT_REGS | |
66 | }; | |
67 | ||
68 | struct upd64031a_state { | |
69 | u8 regs[TOT_REGS]; | |
70 | u8 gr_mode; | |
71 | u8 direct_3dycs_connect; | |
72 | u8 ext_comp_sync; | |
73 | u8 ext_vert_sync; | |
74 | }; | |
75 | ||
76 | static u8 upd64031a_init[] = { | |
77 | 0x00, 0xb8, 0x48, 0xd2, 0xe6, | |
78 | 0x03, 0x10, 0x0b, 0xaf, 0x7f, | |
79 | 0x00, 0x00, 0x1d, 0x5e, 0x00, | |
80 | 0xd0 | |
81 | }; | |
82 | ||
83 | /* ------------------------------------------------------------------------ */ | |
84 | ||
85 | static u8 upd64031a_read(struct i2c_client *client, u8 reg) | |
86 | { | |
87 | u8 buf[2]; | |
88 | ||
89 | if (reg >= sizeof(buf)) | |
90 | return 0xff; | |
91 | i2c_master_recv(client, buf, 2); | |
92 | return buf[reg]; | |
93 | } | |
94 | ||
95 | /* ------------------------------------------------------------------------ */ | |
96 | ||
97 | static void upd64031a_write(struct i2c_client *client, u8 reg, u8 val) | |
98 | { | |
99 | u8 buf[2]; | |
100 | ||
101 | buf[0] = reg; | |
102 | buf[1] = val; | |
103 | v4l_dbg(1, debug, client, "writing reg addr: %02X val: %02X\n", reg, val); | |
104 | if (i2c_master_send(client, buf, 2) != 2) | |
105 | v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val); | |
106 | } | |
107 | ||
108 | /* ------------------------------------------------------------------------ */ | |
109 | ||
110 | /* The input changed due to new input or channel changed */ | |
111 | static void upd64031a_change(struct i2c_client *client) | |
112 | { | |
113 | struct upd64031a_state *state = i2c_get_clientdata(client); | |
114 | u8 reg = state->regs[R00]; | |
115 | ||
116 | v4l_dbg(1, debug, client, "changed input or channel\n"); | |
117 | upd64031a_write(client, R00, reg | 0x10); | |
118 | upd64031a_write(client, R00, reg & ~0x10); | |
119 | } | |
120 | ||
121 | /* ------------------------------------------------------------------------ */ | |
122 | ||
123 | static int upd64031a_command(struct i2c_client *client, unsigned int cmd, void *arg) | |
124 | { | |
125 | struct upd64031a_state *state = i2c_get_clientdata(client); | |
126 | struct v4l2_routing *route = arg; | |
127 | ||
128 | switch (cmd) { | |
129 | case VIDIOC_S_FREQUENCY: | |
130 | upd64031a_change(client); | |
131 | break; | |
132 | ||
133 | case VIDIOC_INT_G_VIDEO_ROUTING: | |
134 | route->input = (state->gr_mode >> 6) | | |
135 | (state->direct_3dycs_connect >> 4) | | |
136 | (state->ext_comp_sync >> 1) | | |
137 | (state->ext_vert_sync >> 2); | |
138 | route->output = 0; | |
139 | break; | |
140 | ||
141 | case VIDIOC_INT_S_VIDEO_ROUTING: | |
142 | { | |
143 | u8 r00, r05, r08; | |
144 | ||
145 | state->gr_mode = (route->input & 3) << 6; | |
146 | state->direct_3dycs_connect = (route->input & 0xc) << 4; | |
147 | state->ext_comp_sync = (route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1; | |
148 | state->ext_vert_sync = (route->input & UPD64031A_VERTICAL_EXTERNAL) << 2; | |
149 | r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode; | |
150 | r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) | | |
151 | state->ext_comp_sync | state->ext_vert_sync; | |
152 | r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) | | |
153 | state->direct_3dycs_connect; | |
154 | upd64031a_write(client, R00, r00); | |
155 | upd64031a_write(client, R05, r05); | |
156 | upd64031a_write(client, R08, r08); | |
157 | upd64031a_change(client); | |
158 | break; | |
159 | } | |
160 | ||
161 | case VIDIOC_LOG_STATUS: | |
162 | v4l_info(client, "Status: SA00=0x%02x SA01=0x%02x\n", | |
163 | upd64031a_read(client, 0), upd64031a_read(client, 1)); | |
164 | break; | |
165 | ||
166 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
52ebc763 | 167 | case VIDIOC_DBG_G_REGISTER: |
52ebc763 | 168 | case VIDIOC_DBG_S_REGISTER: |
add953ce HV |
169 | { |
170 | struct v4l2_register *reg = arg; | |
add953ce | 171 | |
f3d092b8 | 172 | if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip)) |
add953ce HV |
173 | return -EINVAL; |
174 | if (!capable(CAP_SYS_ADMIN)) | |
175 | return -EPERM; | |
62d50add TP |
176 | if (cmd == VIDIOC_DBG_G_REGISTER) |
177 | reg->val = upd64031a_read(client, reg->reg & 0xff); | |
178 | else | |
179 | upd64031a_write(client, reg->reg & 0xff, reg->val & 0xff); | |
add953ce HV |
180 | break; |
181 | } | |
182 | #endif | |
183 | ||
74cab31c HV |
184 | case VIDIOC_G_CHIP_IDENT: |
185 | return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_UPD64031A, 0); | |
186 | ||
add953ce HV |
187 | default: |
188 | break; | |
189 | } | |
190 | return 0; | |
191 | } | |
192 | ||
193 | /* ------------------------------------------------------------------------ */ | |
194 | ||
195 | /* i2c implementation */ | |
196 | ||
2b14e031 | 197 | static int upd64031a_probe(struct i2c_client *client) |
add953ce | 198 | { |
add953ce HV |
199 | struct upd64031a_state *state; |
200 | int i; | |
201 | ||
2b14e031 | 202 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
add953ce HV |
203 | return 0; |
204 | ||
2b14e031 | 205 | v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); |
add953ce HV |
206 | |
207 | state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL); | |
208 | if (state == NULL) { | |
add953ce HV |
209 | return -ENOMEM; |
210 | } | |
211 | i2c_set_clientdata(client, state); | |
212 | memcpy(state->regs, upd64031a_init, sizeof(state->regs)); | |
213 | state->gr_mode = UPD64031A_GR_ON << 6; | |
214 | state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4; | |
215 | state->ext_comp_sync = state->ext_vert_sync = 0; | |
216 | for (i = 0; i < TOT_REGS; i++) { | |
217 | upd64031a_write(client, i, state->regs[i]); | |
218 | } | |
add953ce HV |
219 | return 0; |
220 | } | |
221 | ||
2b14e031 | 222 | static int upd64031a_remove(struct i2c_client *client) |
add953ce | 223 | { |
2b14e031 | 224 | kfree(i2c_get_clientdata(client)); |
add953ce HV |
225 | return 0; |
226 | } | |
227 | ||
228 | /* ----------------------------------------------------------------------- */ | |
229 | ||
2b14e031 HV |
230 | |
231 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
232 | .name = "upd64031a", | |
233 | .driverid = I2C_DRIVERID_UPD64031A, | |
add953ce | 234 | .command = upd64031a_command, |
2b14e031 HV |
235 | .probe = upd64031a_probe, |
236 | .remove = upd64031a_remove, | |
add953ce | 237 | }; |