^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) tea6415c - i2c-driver for the tea6415c by SGS Thomson
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) The tea6415c is a bus controlled video-matrix-switch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) with 8 inputs and 6 outputs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) It is cascadable, i.e. it can be found at the addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 0x86 and 0x06 on the i2c-bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) For detailed information download the specifications directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) from SGS Thomson at http://www.st.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <media/v4l2-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "tea6415c.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MODULE_DESCRIPTION("tea6415c driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static int debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) module_param(debug, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) MODULE_PARM_DESC(debug, "Debug level (0-1)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* makes a connection between the input-pin 'i' and the output-pin 'o' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static int tea6415c_s_routing(struct v4l2_subdev *sd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u32 i, u32 o, u32 config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct i2c_client *client = v4l2_get_subdevdata(sd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u8 byte = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) v4l2_dbg(1, debug, sd, "i=%d, o=%d\n", i, o);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* check if the pins are valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (0 == ((1 == i || 3 == i || 5 == i || 6 == i || 8 == i || 10 == i || 20 == i || 11 == i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) && (18 == o || 17 == o || 16 == o || 15 == o || 14 == o || 13 == o)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* to understand this, have a look at the tea6415c-specs (p.5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) switch (o) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case 18:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) byte = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case 14:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) byte = 0x20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case 16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) byte = 0x10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case 17:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) byte = 0x08;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) case 15:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) byte = 0x18;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) case 13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) byte = 0x28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) switch (i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) case 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) byte |= 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) byte |= 0x04;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) byte |= 0x02;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) case 20:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) byte |= 0x06;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) case 6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) byte |= 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) case 10:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) byte |= 0x05;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) byte |= 0x03;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) case 11:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) byte |= 0x07;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ret = i2c_smbus_write_byte(client, byte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) v4l2_dbg(1, debug, sd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) "i2c_smbus_write_byte() failed, ret:%d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* ----------------------------------------------------------------------- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static const struct v4l2_subdev_video_ops tea6415c_video_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .s_routing = tea6415c_s_routing,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static const struct v4l2_subdev_ops tea6415c_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .video = &tea6415c_video_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int tea6415c_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct v4l2_subdev *sd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* let's see whether this adapter can support what we need */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) v4l_info(client, "chip found @ 0x%x (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) client->addr << 1, client->adapter->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (sd == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) v4l2_i2c_subdev_init(sd, client, &tea6415c_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static int tea6415c_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct v4l2_subdev *sd = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) v4l2_device_unregister_subdev(sd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static const struct i2c_device_id tea6415c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) { "tea6415c", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) MODULE_DEVICE_TABLE(i2c, tea6415c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static struct i2c_driver tea6415c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .name = "tea6415c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .probe = tea6415c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .remove = tea6415c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .id_table = tea6415c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) module_i2c_driver(tea6415c_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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