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Hans Verkuiladd953c2006-03-29 14:56:17 -03001/*
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
Hans Verkuiladd953c2006-03-29 14:56:17 -030024#include <linux/module.h>
25#include <linux/kernel.h>
26#include <linux/i2c.h>
27#include <linux/videodev2.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090028#include <linux/slab.h>
Hans Verkuil09abd502008-11-29 12:59:33 -030029#include <media/v4l2-device.h>
Hans Verkuiladd953c2006-03-29 14:56:17 -030030#include <media/upd64031a.h>
31
Hans Verkuil79f998a2007-12-12 07:34:15 -030032/* --------------------- read registers functions define -------------------- */
Hans Verkuiladd953c2006-03-29 14:56:17 -030033
34/* bit masks */
35#define GR_MODE_MASK 0xc0
36#define DIRECT_3DYCS_CONNECT_MASK 0xc0
37#define SYNC_CIRCUIT_MASK 0xa0
38
Hans Verkuil79f998a2007-12-12 07:34:15 -030039/* -------------------------------------------------------------------------- */
Hans Verkuiladd953c2006-03-29 14:56:17 -030040
41MODULE_DESCRIPTION("uPD64031A driver");
42MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
43MODULE_LICENSE("GPL");
44
Hans Verkuil79f998a2007-12-12 07:34:15 -030045static int debug;
Hans Verkuiladd953c2006-03-29 14:56:17 -030046module_param(debug, int, 0644);
47
48MODULE_PARM_DESC(debug, "Debug level (0-1)");
49
Hans Verkuiladd953c2006-03-29 14:56:17 -030050
51enum {
52 R00 = 0, R01, R02, R03, R04,
53 R05, R06, R07, R08, R09,
54 R0A, R0B, R0C, R0D, R0E, R0F,
55 /* unused registers
56 R10, R11, R12, R13, R14,
57 R15, R16, R17,
58 */
59 TOT_REGS
60};
61
62struct upd64031a_state {
Hans Verkuil09abd502008-11-29 12:59:33 -030063 struct v4l2_subdev sd;
Hans Verkuiladd953c2006-03-29 14:56:17 -030064 u8 regs[TOT_REGS];
65 u8 gr_mode;
66 u8 direct_3dycs_connect;
67 u8 ext_comp_sync;
68 u8 ext_vert_sync;
69};
70
Hans Verkuil09abd502008-11-29 12:59:33 -030071static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd)
72{
73 return container_of(sd, struct upd64031a_state, sd);
74}
75
Hans Verkuiladd953c2006-03-29 14:56:17 -030076static 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
Hans Verkuil09abd502008-11-29 12:59:33 -030085static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg)
Hans Verkuiladd953c2006-03-29 14:56:17 -030086{
Hans Verkuil09abd502008-11-29 12:59:33 -030087 struct i2c_client *client = v4l2_get_subdevdata(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -030088 u8 buf[2];
89
90 if (reg >= sizeof(buf))
91 return 0xff;
92 i2c_master_recv(client, buf, 2);
93 return buf[reg];
94}
95
96/* ------------------------------------------------------------------------ */
97
Hans Verkuil09abd502008-11-29 12:59:33 -030098static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val)
Hans Verkuiladd953c2006-03-29 14:56:17 -030099{
Hans Verkuil09abd502008-11-29 12:59:33 -0300100 struct i2c_client *client = v4l2_get_subdevdata(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300101 u8 buf[2];
102
103 buf[0] = reg;
104 buf[1] = val;
Hans Verkuil09abd502008-11-29 12:59:33 -0300105 v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300106 if (i2c_master_send(client, buf, 2) != 2)
Hans Verkuil09abd502008-11-29 12:59:33 -0300107 v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300108}
109
110/* ------------------------------------------------------------------------ */
111
112/* The input changed due to new input or channel changed */
Hans Verkuilb530a442013-03-19 04:09:26 -0300113static int upd64031a_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300114{
Hans Verkuil09abd502008-11-29 12:59:33 -0300115 struct upd64031a_state *state = to_state(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300116 u8 reg = state->regs[R00];
117
Hans Verkuil09abd502008-11-29 12:59:33 -0300118 v4l2_dbg(1, debug, sd, "changed input or channel\n");
119 upd64031a_write(sd, R00, reg | 0x10);
120 upd64031a_write(sd, R00, reg & ~0x10);
121 return 0;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300122}
123
124/* ------------------------------------------------------------------------ */
125
Hans Verkuil5325b422009-04-02 11:26:22 -0300126static int upd64031a_s_routing(struct v4l2_subdev *sd,
127 u32 input, u32 output, u32 config)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300128{
Hans Verkuil09abd502008-11-29 12:59:33 -0300129 struct upd64031a_state *state = to_state(sd);
130 u8 r00, r05, r08;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300131
Hans Verkuil5325b422009-04-02 11:26:22 -0300132 state->gr_mode = (input & 3) << 6;
133 state->direct_3dycs_connect = (input & 0xc) << 4;
Hans Verkuil09abd502008-11-29 12:59:33 -0300134 state->ext_comp_sync =
Hans Verkuil5325b422009-04-02 11:26:22 -0300135 (input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
Hans Verkuil09abd502008-11-29 12:59:33 -0300136 state->ext_vert_sync =
Hans Verkuil5325b422009-04-02 11:26:22 -0300137 (input & UPD64031A_VERTICAL_EXTERNAL) << 2;
Hans Verkuil09abd502008-11-29 12:59:33 -0300138 r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode;
139 r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) |
140 state->ext_comp_sync | state->ext_vert_sync;
141 r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) |
142 state->direct_3dycs_connect;
143 upd64031a_write(sd, R00, r00);
144 upd64031a_write(sd, R05, r05);
145 upd64031a_write(sd, R08, r08);
146 return upd64031a_s_frequency(sd, NULL);
147}
Hans Verkuiladd953c2006-03-29 14:56:17 -0300148
Hans Verkuil09abd502008-11-29 12:59:33 -0300149static int upd64031a_log_status(struct v4l2_subdev *sd)
150{
151 v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
152 upd64031a_read(sd, 0), upd64031a_read(sd, 1));
Hans Verkuiladd953c2006-03-29 14:56:17 -0300153 return 0;
154}
155
Hans Verkuil09abd502008-11-29 12:59:33 -0300156#ifdef CONFIG_VIDEO_ADV_DEBUG
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300157static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
Hans Verkuil09abd502008-11-29 12:59:33 -0300158{
Hans Verkuil09abd502008-11-29 12:59:33 -0300159 reg->val = upd64031a_read(sd, reg->reg & 0xff);
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300160 reg->size = 1;
Hans Verkuil09abd502008-11-29 12:59:33 -0300161 return 0;
162}
163
Hans Verkuil977ba3b2013-03-24 08:28:46 -0300164static int upd64031a_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
Hans Verkuil09abd502008-11-29 12:59:33 -0300165{
Hans Verkuil09abd502008-11-29 12:59:33 -0300166 upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
167 return 0;
168}
169#endif
170
Hans Verkuil09abd502008-11-29 12:59:33 -0300171/* ----------------------------------------------------------------------- */
172
173static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
174 .log_status = upd64031a_log_status,
Hans Verkuil09abd502008-11-29 12:59:33 -0300175#ifdef CONFIG_VIDEO_ADV_DEBUG
176 .g_register = upd64031a_g_register,
177 .s_register = upd64031a_s_register,
178#endif
179};
180
181static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = {
182 .s_frequency = upd64031a_s_frequency,
183};
184
185static const struct v4l2_subdev_video_ops upd64031a_video_ops = {
186 .s_routing = upd64031a_s_routing,
187};
188
189static const struct v4l2_subdev_ops upd64031a_ops = {
190 .core = &upd64031a_core_ops,
191 .tuner = &upd64031a_tuner_ops,
192 .video = &upd64031a_video_ops,
193};
194
Hans Verkuiladd953c2006-03-29 14:56:17 -0300195/* ------------------------------------------------------------------------ */
196
197/* i2c implementation */
198
Jean Delvared2653e92008-04-29 23:11:39 +0200199static int upd64031a_probe(struct i2c_client *client,
200 const struct i2c_device_id *id)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300201{
Hans Verkuiladd953c2006-03-29 14:56:17 -0300202 struct upd64031a_state *state;
Hans Verkuil09abd502008-11-29 12:59:33 -0300203 struct v4l2_subdev *sd;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300204 int i;
205
Hans Verkuil2b14e032007-09-14 04:58:31 -0300206 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
Hans Verkuil188f3452007-09-16 10:47:15 -0300207 return -EIO;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300208
Hans Verkuil79f998a2007-12-12 07:34:15 -0300209 v4l_info(client, "chip found @ 0x%x (%s)\n",
210 client->addr << 1, client->adapter->name);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300211
Laurent Pinchartc02b2112013-05-02 08:29:43 -0300212 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
Hans Verkuil79f998a2007-12-12 07:34:15 -0300213 if (state == NULL)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300214 return -ENOMEM;
Hans Verkuil09abd502008-11-29 12:59:33 -0300215 sd = &state->sd;
216 v4l2_i2c_subdev_init(sd, client, &upd64031a_ops);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300217 memcpy(state->regs, upd64031a_init, sizeof(state->regs));
218 state->gr_mode = UPD64031A_GR_ON << 6;
219 state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
220 state->ext_comp_sync = state->ext_vert_sync = 0;
Hans Verkuil79f998a2007-12-12 07:34:15 -0300221 for (i = 0; i < TOT_REGS; i++)
Hans Verkuil09abd502008-11-29 12:59:33 -0300222 upd64031a_write(sd, i, state->regs[i]);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300223 return 0;
224}
225
Hans Verkuil2b14e032007-09-14 04:58:31 -0300226static int upd64031a_remove(struct i2c_client *client)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300227{
Hans Verkuil09abd502008-11-29 12:59:33 -0300228 struct v4l2_subdev *sd = i2c_get_clientdata(client);
229
230 v4l2_device_unregister_subdev(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300231 return 0;
232}
233
234/* ----------------------------------------------------------------------- */
235
Jean Delvareaf294862008-05-18 20:49:40 +0200236static const struct i2c_device_id upd64031a_id[] = {
237 { "upd64031a", 0 },
238 { }
239};
240MODULE_DEVICE_TABLE(i2c, upd64031a_id);
Hans Verkuil2b14e032007-09-14 04:58:31 -0300241
Hans Verkuil962961e2010-09-15 15:11:15 -0300242static struct i2c_driver upd64031a_driver = {
243 .driver = {
244 .owner = THIS_MODULE,
245 .name = "upd64031a",
246 },
247 .probe = upd64031a_probe,
248 .remove = upd64031a_remove,
249 .id_table = upd64031a_id,
Hans Verkuiladd953c2006-03-29 14:56:17 -0300250};
Hans Verkuil962961e2010-09-15 15:11:15 -0300251
Axel Linc6e8d862012-02-12 06:56:32 -0300252module_i2c_driver(upd64031a_driver);