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