Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/ |
| 4 | * Written by Jean-Jacques Hiblot <jjhiblot@ti.com> |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 5 | */ |
| 6 | |
Patrick Delaunay | 8131335 | 2021-04-27 11:02:19 +0200 | [diff] [blame] | 7 | #define LOG_CATEGORY UCLASS_PHY |
| 8 | |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 9 | #include <common.h> |
| 10 | #include <dm.h> |
Sean Anderson | 03036a2 | 2020-10-04 21:39:47 -0400 | [diff] [blame] | 11 | #include <dm/device_compat.h> |
developer | 272bde6 | 2020-05-02 11:35:11 +0200 | [diff] [blame] | 12 | #include <dm/devres.h> |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 13 | #include <generic-phy.h> |
| 14 | |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 15 | static inline struct phy_ops *phy_dev_ops(struct udevice *dev) |
| 16 | { |
| 17 | return (struct phy_ops *)dev->driver->ops; |
| 18 | } |
| 19 | |
| 20 | static int generic_phy_xlate_offs_flags(struct phy *phy, |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 21 | struct ofnode_phandle_args *args) |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 22 | { |
| 23 | debug("%s(phy=%p)\n", __func__, phy); |
| 24 | |
| 25 | if (args->args_count > 1) { |
Sean Anderson | a1b654b | 2021-12-01 14:26:53 -0500 | [diff] [blame] | 26 | debug("Invalid args_count: %d\n", args->args_count); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 27 | return -EINVAL; |
| 28 | } |
| 29 | |
| 30 | if (args->args_count) |
| 31 | phy->id = args->args[0]; |
| 32 | else |
| 33 | phy->id = 0; |
| 34 | |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 35 | return 0; |
| 36 | } |
| 37 | |
Jagan Teki | a4e8eee | 2020-05-01 23:44:18 +0530 | [diff] [blame] | 38 | int generic_phy_get_by_index_nodev(ofnode node, int index, struct phy *phy) |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 39 | { |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 40 | struct ofnode_phandle_args args; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 41 | struct phy_ops *ops; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 42 | struct udevice *phydev; |
Patrice Chotard | cf65fa4 | 2018-06-27 11:55:42 +0200 | [diff] [blame] | 43 | int i, ret; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 44 | |
Neil Armstrong | 8ab77e3 | 2020-03-30 11:27:23 +0200 | [diff] [blame] | 45 | debug("%s(node=%s, index=%d, phy=%p)\n", |
| 46 | __func__, ofnode_get_name(node), index, phy); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 47 | |
| 48 | assert(phy); |
Patrice Chotard | 956b7ad | 2017-07-18 11:38:42 +0200 | [diff] [blame] | 49 | phy->dev = NULL; |
Neil Armstrong | 8ab77e3 | 2020-03-30 11:27:23 +0200 | [diff] [blame] | 50 | ret = ofnode_parse_phandle_with_args(node, "phys", "#phy-cells", 0, |
| 51 | index, &args); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 52 | if (ret) { |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 53 | debug("%s: dev_read_phandle_with_args failed: err=%d\n", |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 54 | __func__, ret); |
| 55 | return ret; |
| 56 | } |
| 57 | |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 58 | ret = uclass_get_device_by_ofnode(UCLASS_PHY, args.node, &phydev); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 59 | if (ret) { |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 60 | debug("%s: uclass_get_device_by_ofnode failed: err=%d\n", |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 61 | __func__, ret); |
Patrice Chotard | cf65fa4 | 2018-06-27 11:55:42 +0200 | [diff] [blame] | 62 | |
| 63 | /* Check if args.node's parent is a PHY provider */ |
| 64 | ret = uclass_get_device_by_ofnode(UCLASS_PHY, |
| 65 | ofnode_get_parent(args.node), |
| 66 | &phydev); |
| 67 | if (ret) |
| 68 | return ret; |
| 69 | |
| 70 | /* insert phy idx at first position into args array */ |
Marek Vasut | 61b17ed | 2018-08-07 12:24:35 +0200 | [diff] [blame] | 71 | for (i = args.args_count; i >= 1 ; i--) |
Patrice Chotard | cf65fa4 | 2018-06-27 11:55:42 +0200 | [diff] [blame] | 72 | args.args[i] = args.args[i - 1]; |
| 73 | |
| 74 | args.args_count++; |
| 75 | args.args[0] = ofnode_read_u32_default(args.node, "reg", -1); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | phy->dev = phydev; |
| 79 | |
| 80 | ops = phy_dev_ops(phydev); |
| 81 | |
| 82 | if (ops->of_xlate) |
| 83 | ret = ops->of_xlate(phy, &args); |
| 84 | else |
| 85 | ret = generic_phy_xlate_offs_flags(phy, &args); |
| 86 | if (ret) { |
| 87 | debug("of_xlate() failed: %d\n", ret); |
| 88 | goto err; |
| 89 | } |
| 90 | |
| 91 | return 0; |
| 92 | |
| 93 | err: |
| 94 | return ret; |
| 95 | } |
| 96 | |
Neil Armstrong | 8ab77e3 | 2020-03-30 11:27:23 +0200 | [diff] [blame] | 97 | int generic_phy_get_by_index(struct udevice *dev, int index, |
| 98 | struct phy *phy) |
| 99 | { |
Jagan Teki | a4e8eee | 2020-05-01 23:44:18 +0530 | [diff] [blame] | 100 | return generic_phy_get_by_index_nodev(dev_ofnode(dev), index, phy); |
Neil Armstrong | 8ab77e3 | 2020-03-30 11:27:23 +0200 | [diff] [blame] | 101 | } |
| 102 | |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 103 | int generic_phy_get_by_name(struct udevice *dev, const char *phy_name, |
| 104 | struct phy *phy) |
| 105 | { |
| 106 | int index; |
| 107 | |
| 108 | debug("%s(dev=%p, name=%s, phy=%p)\n", __func__, dev, phy_name, phy); |
| 109 | |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 110 | index = dev_read_stringlist_search(dev, "phy-names", phy_name); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 111 | if (index < 0) { |
Simon Glass | 8195551 | 2017-05-18 20:09:47 -0600 | [diff] [blame] | 112 | debug("dev_read_stringlist_search() failed: %d\n", index); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 113 | return index; |
| 114 | } |
| 115 | |
| 116 | return generic_phy_get_by_index(dev, index, phy); |
| 117 | } |
| 118 | |
| 119 | int generic_phy_init(struct phy *phy) |
| 120 | { |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 121 | struct phy_ops const *ops; |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 122 | int ret; |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 123 | |
Vignesh Raghavendra | 62bd5b1 | 2020-05-20 22:35:41 +0530 | [diff] [blame] | 124 | if (!generic_phy_valid(phy)) |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 125 | return 0; |
| 126 | ops = phy_dev_ops(phy->dev); |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 127 | if (!ops->init) |
| 128 | return 0; |
| 129 | ret = ops->init(phy); |
| 130 | if (ret) |
| 131 | dev_err(phy->dev, "PHY: Failed to init %s: %d.\n", |
| 132 | phy->dev->name, ret); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 133 | |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 134 | return ret; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | int generic_phy_reset(struct phy *phy) |
| 138 | { |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 139 | struct phy_ops const *ops; |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 140 | int ret; |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 141 | |
Vignesh Raghavendra | 62bd5b1 | 2020-05-20 22:35:41 +0530 | [diff] [blame] | 142 | if (!generic_phy_valid(phy)) |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 143 | return 0; |
| 144 | ops = phy_dev_ops(phy->dev); |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 145 | if (!ops->reset) |
| 146 | return 0; |
| 147 | ret = ops->reset(phy); |
| 148 | if (ret) |
| 149 | dev_err(phy->dev, "PHY: Failed to reset %s: %d.\n", |
| 150 | phy->dev->name, ret); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 151 | |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 152 | return ret; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | int generic_phy_exit(struct phy *phy) |
| 156 | { |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 157 | struct phy_ops const *ops; |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 158 | int ret; |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 159 | |
Vignesh Raghavendra | 62bd5b1 | 2020-05-20 22:35:41 +0530 | [diff] [blame] | 160 | if (!generic_phy_valid(phy)) |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 161 | return 0; |
| 162 | ops = phy_dev_ops(phy->dev); |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 163 | if (!ops->exit) |
| 164 | return 0; |
| 165 | ret = ops->exit(phy); |
| 166 | if (ret) |
| 167 | dev_err(phy->dev, "PHY: Failed to exit %s: %d.\n", |
| 168 | phy->dev->name, ret); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 169 | |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 170 | return ret; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | int generic_phy_power_on(struct phy *phy) |
| 174 | { |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 175 | struct phy_ops const *ops; |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 176 | int ret; |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 177 | |
Vignesh Raghavendra | 62bd5b1 | 2020-05-20 22:35:41 +0530 | [diff] [blame] | 178 | if (!generic_phy_valid(phy)) |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 179 | return 0; |
| 180 | ops = phy_dev_ops(phy->dev); |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 181 | if (!ops->power_on) |
| 182 | return 0; |
| 183 | ret = ops->power_on(phy); |
| 184 | if (ret) |
| 185 | dev_err(phy->dev, "PHY: Failed to power on %s: %d.\n", |
| 186 | phy->dev->name, ret); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 187 | |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 188 | return ret; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | int generic_phy_power_off(struct phy *phy) |
| 192 | { |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 193 | struct phy_ops const *ops; |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 194 | int ret; |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 195 | |
Vignesh Raghavendra | 62bd5b1 | 2020-05-20 22:35:41 +0530 | [diff] [blame] | 196 | if (!generic_phy_valid(phy)) |
Jean-Jacques Hiblot | eae1eeb | 2019-10-01 14:03:26 +0200 | [diff] [blame] | 197 | return 0; |
| 198 | ops = phy_dev_ops(phy->dev); |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 199 | if (!ops->power_off) |
| 200 | return 0; |
| 201 | ret = ops->power_off(phy); |
| 202 | if (ret) |
| 203 | dev_err(phy->dev, "PHY: Failed to power off %s: %d.\n", |
| 204 | phy->dev->name, ret); |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 205 | |
Patrick Delaunay | c2e5efd | 2020-07-03 17:36:40 +0200 | [diff] [blame] | 206 | return ret; |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 207 | } |
| 208 | |
Neil Armstrong | 963ae6c | 2020-12-29 14:58:59 +0100 | [diff] [blame] | 209 | int generic_phy_configure(struct phy *phy, void *params) |
| 210 | { |
| 211 | struct phy_ops const *ops; |
| 212 | |
| 213 | if (!generic_phy_valid(phy)) |
| 214 | return 0; |
| 215 | ops = phy_dev_ops(phy->dev); |
| 216 | |
| 217 | return ops->configure ? ops->configure(phy, params) : 0; |
| 218 | } |
| 219 | |
developer | 272bde6 | 2020-05-02 11:35:11 +0200 | [diff] [blame] | 220 | int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk) |
| 221 | { |
| 222 | int i, ret, count; |
| 223 | |
| 224 | bulk->count = 0; |
| 225 | |
| 226 | /* Return if no phy declared */ |
| 227 | if (!dev_read_prop(dev, "phys", NULL)) |
| 228 | return 0; |
| 229 | |
Patrick Delaunay | d776a84 | 2020-09-25 09:41:14 +0200 | [diff] [blame] | 230 | count = dev_count_phandle_with_args(dev, "phys", "#phy-cells", 0); |
developer | 272bde6 | 2020-05-02 11:35:11 +0200 | [diff] [blame] | 231 | if (count < 1) |
| 232 | return count; |
| 233 | |
| 234 | bulk->phys = devm_kcalloc(dev, count, sizeof(struct phy), GFP_KERNEL); |
| 235 | if (!bulk->phys) |
| 236 | return -ENOMEM; |
| 237 | |
| 238 | for (i = 0; i < count; i++) { |
| 239 | ret = generic_phy_get_by_index(dev, i, &bulk->phys[i]); |
| 240 | if (ret) { |
| 241 | pr_err("Failed to get PHY%d for %s\n", i, dev->name); |
| 242 | return ret; |
| 243 | } |
| 244 | bulk->count++; |
| 245 | } |
| 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | |
| 250 | int generic_phy_init_bulk(struct phy_bulk *bulk) |
| 251 | { |
| 252 | struct phy *phys = bulk->phys; |
| 253 | int i, ret; |
| 254 | |
| 255 | for (i = 0; i < bulk->count; i++) { |
| 256 | ret = generic_phy_init(&phys[i]); |
| 257 | if (ret) { |
| 258 | pr_err("Can't init PHY%d\n", i); |
| 259 | goto phys_init_err; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | return 0; |
| 264 | |
| 265 | phys_init_err: |
| 266 | for (; i > 0; i--) |
| 267 | generic_phy_exit(&phys[i - 1]); |
| 268 | |
| 269 | return ret; |
| 270 | } |
| 271 | |
| 272 | int generic_phy_exit_bulk(struct phy_bulk *bulk) |
| 273 | { |
| 274 | struct phy *phys = bulk->phys; |
| 275 | int i, ret = 0; |
| 276 | |
| 277 | for (i = 0; i < bulk->count; i++) |
| 278 | ret |= generic_phy_exit(&phys[i]); |
| 279 | |
| 280 | return ret; |
| 281 | } |
| 282 | |
| 283 | int generic_phy_power_on_bulk(struct phy_bulk *bulk) |
| 284 | { |
| 285 | struct phy *phys = bulk->phys; |
| 286 | int i, ret; |
| 287 | |
| 288 | for (i = 0; i < bulk->count; i++) { |
| 289 | ret = generic_phy_power_on(&phys[i]); |
| 290 | if (ret) { |
| 291 | pr_err("Can't power on PHY%d\n", i); |
| 292 | goto phys_poweron_err; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | return 0; |
| 297 | |
| 298 | phys_poweron_err: |
| 299 | for (; i > 0; i--) |
| 300 | generic_phy_power_off(&phys[i - 1]); |
| 301 | |
| 302 | return ret; |
| 303 | } |
| 304 | |
| 305 | int generic_phy_power_off_bulk(struct phy_bulk *bulk) |
| 306 | { |
| 307 | struct phy *phys = bulk->phys; |
| 308 | int i, ret = 0; |
| 309 | |
| 310 | for (i = 0; i < bulk->count; i++) |
| 311 | ret |= generic_phy_power_off(&phys[i]); |
| 312 | |
| 313 | return ret; |
| 314 | } |
| 315 | |
Jean-Jacques Hiblot | 4844778 | 2017-04-24 11:51:27 +0200 | [diff] [blame] | 316 | UCLASS_DRIVER(phy) = { |
| 317 | .id = UCLASS_PHY, |
| 318 | .name = "phy", |
| 319 | }; |