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Hans Verkuiladd953c2006-03-29 14:56:17 -03001/*
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
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -030020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
Hans Verkuiladd953c2006-03-29 14:56:17 -030022 */
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 Verkuilcc7ca3e2008-11-29 13:00:30 -030029#include <media/v4l2-device.h>
Hans Verkuiladd953c2006-03-29 14:56:17 -030030#include <media/upd64083.h>
31
32MODULE_DESCRIPTION("uPD64083 driver");
33MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
34MODULE_LICENSE("GPL");
35
Rusty Russell90ab5ee2012-01-13 09:32:20 +103036static bool debug;
Hans Verkuiladd953c2006-03-29 14:56:17 -030037module_param(debug, bool, 0644);
38
39MODULE_PARM_DESC(debug, "Debug level (0-1)");
40
Hans Verkuiladd953c2006-03-29 14:56:17 -030041
42enum {
43 R00 = 0, R01, R02, R03, R04,
44 R05, R06, R07, R08, R09,
45 R0A, R0B, R0C, R0D, R0E, R0F,
46 R10, R11, R12, R13, R14,
47 R15, R16,
48 TOT_REGS
49};
50
51struct upd64083_state {
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030052 struct v4l2_subdev sd;
Hans Verkuiladd953c2006-03-29 14:56:17 -030053 u8 mode;
54 u8 ext_y_adc;
55 u8 regs[TOT_REGS];
56};
57
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030058static inline struct upd64083_state *to_state(struct v4l2_subdev *sd)
59{
60 return container_of(sd, struct upd64083_state, sd);
61}
62
Hans Verkuiladd953c2006-03-29 14:56:17 -030063/* Initial values when used in combination with the
64 NEC upd64031a ghost reduction chip. */
65static u8 upd64083_init[] = {
66 0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */
67 0x36, 0xdd, 0x05, 0x56, 0x48,
68 0x00, 0x3a, 0xa0, 0x05, 0x08,
69 0x44, 0x60, 0x08, 0x52, 0xf8,
70 0x53, 0x60, 0x10
71};
72
73/* ------------------------------------------------------------------------ */
74
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030075static void upd64083_write(struct v4l2_subdev *sd, u8 reg, u8 val)
Hans Verkuiladd953c2006-03-29 14:56:17 -030076{
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030077 struct i2c_client *client = v4l2_get_subdevdata(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -030078 u8 buf[2];
79
80 buf[0] = reg;
81 buf[1] = val;
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030082 v4l2_dbg(1, debug, sd, "write reg: %02x val: %02x\n", reg, val);
Hans Verkuiladd953c2006-03-29 14:56:17 -030083 if (i2c_master_send(client, buf, 2) != 2)
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030084 v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
Hans Verkuiladd953c2006-03-29 14:56:17 -030085}
86
87/* ------------------------------------------------------------------------ */
88
89#ifdef CONFIG_VIDEO_ADV_DEBUG
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030090static u8 upd64083_read(struct v4l2_subdev *sd, u8 reg)
Hans Verkuiladd953c2006-03-29 14:56:17 -030091{
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -030092 struct i2c_client *client = v4l2_get_subdevdata(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -030093 u8 buf[7];
94
95 if (reg >= sizeof(buf))
96 return 0xff;
97 i2c_master_recv(client, buf, sizeof(buf));
98 return buf[reg];
99}
100#endif
101
102/* ------------------------------------------------------------------------ */
103
Hans Verkuil5325b422009-04-02 11:26:22 -0300104static int upd64083_s_routing(struct v4l2_subdev *sd,
105 u32 input, u32 output, u32 config)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300106{
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300107 struct upd64083_state *state = to_state(sd);
108 u8 r00, r02;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300109
Hans Verkuil5325b422009-04-02 11:26:22 -0300110 if (input > 7 || (input & 6) == 6)
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300111 return -EINVAL;
Hans Verkuil5325b422009-04-02 11:26:22 -0300112 state->mode = (input & 3) << 6;
113 state->ext_y_adc = (input & UPD64083_EXT_Y_ADC) << 3;
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300114 r00 = (state->regs[R00] & ~(3 << 6)) | state->mode;
115 r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc;
116 upd64083_write(sd, R00, r00);
117 upd64083_write(sd, R02, r02);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300118 return 0;
119}
120
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300121#ifdef CONFIG_VIDEO_ADV_DEBUG
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300122static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300123{
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300124 reg->val = upd64083_read(sd, reg->reg & 0xff);
Hans Verkuilaecde8b52008-12-30 07:14:19 -0300125 reg->size = 1;
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300126 return 0;
127}
128
Hans Verkuil977ba3b2013-03-24 08:28:46 -0300129static int upd64083_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300130{
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300131 upd64083_write(sd, reg->reg & 0xff, reg->val & 0xff);
132 return 0;
133}
134#endif
135
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300136static int upd64083_log_status(struct v4l2_subdev *sd)
137{
138 struct i2c_client *client = v4l2_get_subdevdata(sd);
139 u8 buf[7];
140
141 i2c_master_recv(client, buf, 7);
142 v4l2_info(sd, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x "
143 "SA04=%02x SA05=%02x SA06=%02x\n",
144 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
145 return 0;
146}
147
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300148/* ----------------------------------------------------------------------- */
149
150static const struct v4l2_subdev_core_ops upd64083_core_ops = {
151 .log_status = upd64083_log_status,
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300152#ifdef CONFIG_VIDEO_ADV_DEBUG
153 .g_register = upd64083_g_register,
154 .s_register = upd64083_s_register,
155#endif
156};
157
158static const struct v4l2_subdev_video_ops upd64083_video_ops = {
159 .s_routing = upd64083_s_routing,
160};
161
162static const struct v4l2_subdev_ops upd64083_ops = {
163 .core = &upd64083_core_ops,
164 .video = &upd64083_video_ops,
165};
166
Hans Verkuiladd953c2006-03-29 14:56:17 -0300167/* ------------------------------------------------------------------------ */
168
169/* i2c implementation */
170
Jean Delvared2653e92008-04-29 23:11:39 +0200171static int upd64083_probe(struct i2c_client *client,
172 const struct i2c_device_id *id)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300173{
Hans Verkuiladd953c2006-03-29 14:56:17 -0300174 struct upd64083_state *state;
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300175 struct v4l2_subdev *sd;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300176 int i;
177
Hans Verkuil26666972007-09-14 04:58:06 -0300178 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
Hans Verkuil188f3452007-09-16 10:47:15 -0300179 return -EIO;
Hans Verkuiladd953c2006-03-29 14:56:17 -0300180
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300181 v4l_info(client, "chip found @ 0x%x (%s)\n",
182 client->addr << 1, client->adapter->name);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300183
Laurent Pinchartc02b2112013-05-02 08:29:43 -0300184 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300185 if (state == NULL)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300186 return -ENOMEM;
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300187 sd = &state->sd;
188 v4l2_i2c_subdev_init(sd, client, &upd64083_ops);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300189 /* Initially assume that a ghost reduction chip is present */
190 state->mode = 0; /* YCS mode */
191 state->ext_y_adc = (1 << 5);
192 memcpy(state->regs, upd64083_init, TOT_REGS);
Hans Verkuil8c9fc8d2007-12-12 07:30:02 -0300193 for (i = 0; i < TOT_REGS; i++)
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300194 upd64083_write(sd, i, state->regs[i]);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300195 return 0;
196}
197
Hans Verkuil26666972007-09-14 04:58:06 -0300198static int upd64083_remove(struct i2c_client *client)
Hans Verkuiladd953c2006-03-29 14:56:17 -0300199{
Hans Verkuilcc7ca3e2008-11-29 13:00:30 -0300200 struct v4l2_subdev *sd = i2c_get_clientdata(client);
201
202 v4l2_device_unregister_subdev(sd);
Hans Verkuiladd953c2006-03-29 14:56:17 -0300203 return 0;
204}
205
206/* ----------------------------------------------------------------------- */
207
Jean Delvareaf294862008-05-18 20:49:40 +0200208static const struct i2c_device_id upd64083_id[] = {
209 { "upd64083", 0 },
210 { }
211};
212MODULE_DEVICE_TABLE(i2c, upd64083_id);
Hans Verkuil26666972007-09-14 04:58:06 -0300213
Hans Verkuil37a0cfc2010-09-15 15:46:37 -0300214static struct i2c_driver upd64083_driver = {
215 .driver = {
216 .owner = THIS_MODULE,
217 .name = "upd64083",
218 },
219 .probe = upd64083_probe,
220 .remove = upd64083_remove,
221 .id_table = upd64083_id,
Hans Verkuiladd953c2006-03-29 14:56:17 -0300222};
Hans Verkuil37a0cfc2010-09-15 15:46:37 -0300223
Axel Linc6e8d862012-02-12 06:56:32 -0300224module_i2c_driver(upd64083_driver);