Thomas Gleixner | c942fdd | 2019-05-27 08:55:06 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * bt856 - BT856A Digital Video Encoder (Rockwell Part) |
| 4 | * |
| 5 | * Copyright (C) 1999 Mike Bernson <mike@mlb.org> |
| 6 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
| 7 | * |
| 8 | * Modifications for LML33/DC10plus unified driver |
| 9 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> |
| 10 | * |
| 11 | * This code was modify/ported from the saa7111 driver written |
| 12 | * by Dave Perks. |
| 13 | * |
| 14 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
| 15 | * - moved over to linux>=2.4.x i2c protocol (9/9/2002) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
Mauro Carvalho Chehab | 18f3fa1 | 2007-07-02 15:39:57 -0300 | [diff] [blame] | 19 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 20 | #include <linux/slab.h> |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 21 | #include <linux/ioctl.h> |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 22 | #include <linux/uaccess.h> |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 23 | #include <linux/i2c.h> |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 24 | #include <linux/videodev2.h> |
| 25 | #include <media/v4l2-device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
| 27 | MODULE_DESCRIPTION("Brooktree-856A video encoder driver"); |
| 28 | MODULE_AUTHOR("Mike Bernson & Dave Perks"); |
| 29 | MODULE_LICENSE("GPL"); |
| 30 | |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame] | 31 | static int debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | module_param(debug, int, 0); |
| 33 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
| 34 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | /* ----------------------------------------------------------------------- */ |
| 37 | |
Hans Verkuil | 187565c | 2008-08-30 06:03:09 -0300 | [diff] [blame] | 38 | #define BT856_REG_OFFSET 0xDA |
| 39 | #define BT856_NR_REG 6 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | struct bt856 { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 42 | struct v4l2_subdev sd; |
Jean Delvare | f49a5ea | 2006-03-22 03:48:36 -0300 | [diff] [blame] | 43 | unsigned char reg[BT856_NR_REG]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Hans Verkuil | 107063c | 2009-02-18 17:26:06 -0300 | [diff] [blame] | 45 | v4l2_std_id norm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | }; |
| 47 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 48 | static inline struct bt856 *to_bt856(struct v4l2_subdev *sd) |
| 49 | { |
| 50 | return container_of(sd, struct bt856, sd); |
| 51 | } |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | /* ----------------------------------------------------------------------- */ |
| 54 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 55 | static inline int bt856_write(struct bt856 *encoder, u8 reg, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 57 | struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Hans Verkuil | 187565c | 2008-08-30 06:03:09 -0300 | [diff] [blame] | 59 | encoder->reg[reg - BT856_REG_OFFSET] = value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | return i2c_smbus_write_byte_data(client, reg, value); |
| 61 | } |
| 62 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 63 | static inline int bt856_setbit(struct bt856 *encoder, u8 reg, u8 bit, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 65 | return bt856_write(encoder, reg, |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 66 | (encoder->reg[reg - BT856_REG_OFFSET] & ~(1 << bit)) | |
| 67 | (value ? (1 << bit) : 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | } |
| 69 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 70 | static void bt856_dump(struct bt856 *encoder) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | { |
| 72 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 74 | v4l2_info(&encoder->sd, "register dump:\n"); |
Jean Delvare | f49a5ea | 2006-03-22 03:48:36 -0300 | [diff] [blame] | 75 | for (i = 0; i < BT856_NR_REG; i += 2) |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 76 | printk(KERN_CONT " %02x", encoder->reg[i]); |
| 77 | printk(KERN_CONT "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | /* ----------------------------------------------------------------------- */ |
| 81 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 82 | static int bt856_init(struct v4l2_subdev *sd, u32 arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 84 | struct bt856 *encoder = to_bt856(sd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 86 | /* This is just for testing!!! */ |
| 87 | v4l2_dbg(1, debug, sd, "init\n"); |
| 88 | bt856_write(encoder, 0xdc, 0x18); |
| 89 | bt856_write(encoder, 0xda, 0); |
| 90 | bt856_write(encoder, 0xde, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 92 | bt856_setbit(encoder, 0xdc, 3, 1); |
| 93 | /*bt856_setbit(encoder, 0xdc, 6, 0);*/ |
| 94 | bt856_setbit(encoder, 0xdc, 4, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 96 | if (encoder->norm & V4L2_STD_NTSC) |
| 97 | bt856_setbit(encoder, 0xdc, 2, 0); |
| 98 | else |
| 99 | bt856_setbit(encoder, 0xdc, 2, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 101 | bt856_setbit(encoder, 0xdc, 1, 1); |
| 102 | bt856_setbit(encoder, 0xde, 4, 0); |
| 103 | bt856_setbit(encoder, 0xde, 3, 1); |
| 104 | if (debug != 0) |
| 105 | bt856_dump(encoder); |
| 106 | return 0; |
| 107 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 109 | static int bt856_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
| 110 | { |
| 111 | struct bt856 *encoder = to_bt856(sd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
Hans Verkuil | cc5cef8 | 2009-03-06 10:15:01 -0300 | [diff] [blame] | 113 | v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 115 | if (std & V4L2_STD_NTSC) { |
| 116 | bt856_setbit(encoder, 0xdc, 2, 0); |
| 117 | } else if (std & V4L2_STD_PAL) { |
| 118 | bt856_setbit(encoder, 0xdc, 2, 1); |
| 119 | bt856_setbit(encoder, 0xda, 0, 0); |
| 120 | /*bt856_setbit(encoder, 0xda, 0, 1);*/ |
| 121 | } else { |
| 122 | return -EINVAL; |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 123 | } |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 124 | encoder->norm = std; |
| 125 | if (debug != 0) |
| 126 | bt856_dump(encoder); |
| 127 | return 0; |
| 128 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 130 | static int bt856_s_routing(struct v4l2_subdev *sd, |
| 131 | u32 input, u32 output, u32 config) |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 132 | { |
| 133 | struct bt856 *encoder = to_bt856(sd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 135 | v4l2_dbg(1, debug, sd, "set input %d\n", input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 137 | /* We only have video bus. |
Hans Verkuil | 5325b42 | 2009-04-02 11:26:22 -0300 | [diff] [blame] | 138 | * input= 0: input is from bt819 |
| 139 | * input= 1: input is from ZR36060 */ |
| 140 | switch (input) { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 141 | case 0: |
| 142 | bt856_setbit(encoder, 0xde, 4, 0); |
| 143 | bt856_setbit(encoder, 0xde, 3, 1); |
| 144 | bt856_setbit(encoder, 0xdc, 3, 1); |
| 145 | bt856_setbit(encoder, 0xdc, 6, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | break; |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 147 | case 1: |
| 148 | bt856_setbit(encoder, 0xde, 4, 0); |
| 149 | bt856_setbit(encoder, 0xde, 3, 1); |
| 150 | bt856_setbit(encoder, 0xdc, 3, 1); |
| 151 | bt856_setbit(encoder, 0xdc, 6, 1); |
| 152 | break; |
| 153 | case 2: /* Color bar */ |
| 154 | bt856_setbit(encoder, 0xdc, 3, 0); |
| 155 | bt856_setbit(encoder, 0xde, 4, 1); |
| 156 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | default: |
| 158 | return -EINVAL; |
| 159 | } |
| 160 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 161 | if (debug != 0) |
| 162 | bt856_dump(encoder); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | /* ----------------------------------------------------------------------- */ |
| 167 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 168 | static const struct v4l2_subdev_core_ops bt856_core_ops = { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 169 | .init = bt856_init, |
| 170 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 172 | static const struct v4l2_subdev_video_ops bt856_video_ops = { |
| 173 | .s_std_output = bt856_s_std_output, |
| 174 | .s_routing = bt856_s_routing, |
| 175 | }; |
| 176 | |
| 177 | static const struct v4l2_subdev_ops bt856_ops = { |
| 178 | .core = &bt856_core_ops, |
| 179 | .video = &bt856_video_ops, |
| 180 | }; |
| 181 | |
| 182 | /* ----------------------------------------------------------------------- */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 183 | |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 184 | static int bt856_probe(struct i2c_client *client, |
| 185 | const struct i2c_device_id *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | struct bt856 *encoder; |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 188 | struct v4l2_subdev *sd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | /* Check if the adapter supports the needed features */ |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 191 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 192 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 194 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 195 | client->addr << 1, client->adapter->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
Laurent Pinchart | c02b211 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 197 | encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL); |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 198 | if (encoder == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | return -ENOMEM; |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 200 | sd = &encoder->sd; |
| 201 | v4l2_i2c_subdev_init(sd, client, &bt856_ops); |
Hans Verkuil | 107063c | 2009-02-18 17:26:06 -0300 | [diff] [blame] | 202 | encoder->norm = V4L2_STD_NTSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 204 | bt856_write(encoder, 0xdc, 0x18); |
| 205 | bt856_write(encoder, 0xda, 0); |
| 206 | bt856_write(encoder, 0xde, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 208 | bt856_setbit(encoder, 0xdc, 3, 1); |
| 209 | /*bt856_setbit(encoder, 0xdc, 6, 0);*/ |
| 210 | bt856_setbit(encoder, 0xdc, 4, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Hans Verkuil | 107063c | 2009-02-18 17:26:06 -0300 | [diff] [blame] | 212 | if (encoder->norm & V4L2_STD_NTSC) |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 213 | bt856_setbit(encoder, 0xdc, 2, 0); |
Hans Verkuil | 107063c | 2009-02-18 17:26:06 -0300 | [diff] [blame] | 214 | else |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 215 | bt856_setbit(encoder, 0xdc, 2, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 217 | bt856_setbit(encoder, 0xdc, 1, 1); |
| 218 | bt856_setbit(encoder, 0xde, 4, 0); |
| 219 | bt856_setbit(encoder, 0xde, 3, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | if (debug != 0) |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 222 | bt856_dump(encoder); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | return 0; |
| 224 | } |
| 225 | |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 226 | static int bt856_remove(struct i2c_client *client) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | { |
Hans Verkuil | a91f56e | 2009-02-19 08:54:36 -0300 | [diff] [blame] | 228 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 229 | |
| 230 | v4l2_device_unregister_subdev(sd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return 0; |
| 232 | } |
| 233 | |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 234 | static const struct i2c_device_id bt856_id[] = { |
| 235 | { "bt856", 0 }, |
| 236 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | }; |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 238 | MODULE_DEVICE_TABLE(i2c, bt856_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Hans Verkuil | 3f41720 | 2010-09-15 15:32:24 -0300 | [diff] [blame] | 240 | static struct i2c_driver bt856_driver = { |
| 241 | .driver = { |
Hans Verkuil | 3f41720 | 2010-09-15 15:32:24 -0300 | [diff] [blame] | 242 | .name = "bt856", |
| 243 | }, |
| 244 | .probe = bt856_probe, |
| 245 | .remove = bt856_remove, |
| 246 | .id_table = bt856_id, |
Hans Verkuil | a8c26df | 2008-09-07 07:59:35 -0300 | [diff] [blame] | 247 | }; |
Hans Verkuil | 3f41720 | 2010-09-15 15:32:24 -0300 | [diff] [blame] | 248 | |
Axel Lin | c6e8d86 | 2012-02-12 06:56:32 -0300 | [diff] [blame] | 249 | module_i2c_driver(bt856_driver); |