Axel Lin | 3cad5fc | 2019-04-17 22:16:30 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | // |
| 3 | // wm831x-ldo.c -- LDO driver for the WM831x series |
| 4 | // |
| 5 | // Copyright 2009 Wolfson Microelectronics PLC. |
| 6 | // |
| 7 | // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 8 | |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/moduleparam.h> |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/bitops.h> |
| 13 | #include <linux/err.h> |
| 14 | #include <linux/i2c.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/regulator/driver.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 17 | #include <linux/slab.h> |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 18 | |
| 19 | #include <linux/mfd/wm831x/core.h> |
| 20 | #include <linux/mfd/wm831x/regulator.h> |
| 21 | #include <linux/mfd/wm831x/pdata.h> |
| 22 | |
Mark Brown | f1aba13 | 2012-03-28 21:40:20 +0100 | [diff] [blame] | 23 | #define WM831X_LDO_MAX_NAME 9 |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 24 | |
| 25 | #define WM831X_LDO_CONTROL 0 |
| 26 | #define WM831X_LDO_ON_CONTROL 1 |
| 27 | #define WM831X_LDO_SLEEP_CONTROL 2 |
| 28 | |
| 29 | #define WM831X_ALIVE_LDO_ON_CONTROL 0 |
| 30 | #define WM831X_ALIVE_LDO_SLEEP_CONTROL 1 |
| 31 | |
| 32 | struct wm831x_ldo { |
| 33 | char name[WM831X_LDO_MAX_NAME]; |
Mark Brown | f1aba13 | 2012-03-28 21:40:20 +0100 | [diff] [blame] | 34 | char supply_name[WM831X_LDO_MAX_NAME]; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 35 | struct regulator_desc desc; |
| 36 | int base; |
| 37 | struct wm831x *wm831x; |
| 38 | struct regulator_dev *regulator; |
| 39 | }; |
| 40 | |
| 41 | /* |
| 42 | * Shared |
| 43 | */ |
| 44 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 45 | static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) |
| 46 | { |
| 47 | struct wm831x_ldo *ldo = data; |
| 48 | |
Steve Twiss | 8be64b6 | 2019-02-26 15:54:01 +0000 | [diff] [blame] | 49 | regulator_lock(ldo->regulator); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 50 | regulator_notifier_call_chain(ldo->regulator, |
| 51 | REGULATOR_EVENT_UNDER_VOLTAGE, |
| 52 | NULL); |
Steve Twiss | 8be64b6 | 2019-02-26 15:54:01 +0000 | [diff] [blame] | 53 | regulator_unlock(ldo->regulator); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 54 | |
| 55 | return IRQ_HANDLED; |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | * General purpose LDOs |
| 60 | */ |
| 61 | |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 62 | static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = { |
Axel Lin | 8828bae | 2013-10-11 09:32:18 +0800 | [diff] [blame] | 63 | REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000), |
| 64 | REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000), |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 65 | }; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 66 | |
| 67 | static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev, |
| 68 | int uV) |
| 69 | { |
| 70 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 71 | struct wm831x *wm831x = ldo->wm831x; |
| 72 | int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 73 | |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 74 | sel = regulator_map_voltage_linear_range(rdev, uV, uV); |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 75 | if (sel < 0) |
| 76 | return sel; |
| 77 | |
| 78 | return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 79 | } |
| 80 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 81 | static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev) |
| 82 | { |
| 83 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 84 | struct wm831x *wm831x = ldo->wm831x; |
| 85 | int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; |
| 86 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
Roel Kluin | 9a767d4 | 2009-10-16 14:16:15 +0200 | [diff] [blame] | 87 | int ret; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 88 | |
| 89 | ret = wm831x_reg_read(wm831x, on_reg); |
| 90 | if (ret < 0) |
Roel Kluin | 9a767d4 | 2009-10-16 14:16:15 +0200 | [diff] [blame] | 91 | return ret; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 92 | |
| 93 | if (!(ret & WM831X_LDO1_ON_MODE)) |
| 94 | return REGULATOR_MODE_NORMAL; |
| 95 | |
| 96 | ret = wm831x_reg_read(wm831x, ctrl_reg); |
| 97 | if (ret < 0) |
Roel Kluin | 9a767d4 | 2009-10-16 14:16:15 +0200 | [diff] [blame] | 98 | return ret; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 99 | |
| 100 | if (ret & WM831X_LDO1_LP_MODE) |
| 101 | return REGULATOR_MODE_STANDBY; |
| 102 | else |
| 103 | return REGULATOR_MODE_IDLE; |
| 104 | } |
| 105 | |
| 106 | static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev, |
| 107 | unsigned int mode) |
| 108 | { |
| 109 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 110 | struct wm831x *wm831x = ldo->wm831x; |
| 111 | int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; |
| 112 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
| 113 | int ret; |
| 114 | |
| 115 | |
| 116 | switch (mode) { |
| 117 | case REGULATOR_MODE_NORMAL: |
| 118 | ret = wm831x_set_bits(wm831x, on_reg, |
| 119 | WM831X_LDO1_ON_MODE, 0); |
| 120 | if (ret < 0) |
| 121 | return ret; |
| 122 | break; |
| 123 | |
| 124 | case REGULATOR_MODE_IDLE: |
| 125 | ret = wm831x_set_bits(wm831x, ctrl_reg, |
Axel Lin | e260999 | 2010-09-06 16:48:13 +0800 | [diff] [blame] | 126 | WM831X_LDO1_LP_MODE, 0); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 127 | if (ret < 0) |
| 128 | return ret; |
| 129 | |
| 130 | ret = wm831x_set_bits(wm831x, on_reg, |
| 131 | WM831X_LDO1_ON_MODE, |
| 132 | WM831X_LDO1_ON_MODE); |
| 133 | if (ret < 0) |
| 134 | return ret; |
Axel Lin | e260999 | 2010-09-06 16:48:13 +0800 | [diff] [blame] | 135 | break; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 136 | |
| 137 | case REGULATOR_MODE_STANDBY: |
| 138 | ret = wm831x_set_bits(wm831x, ctrl_reg, |
Axel Lin | e260999 | 2010-09-06 16:48:13 +0800 | [diff] [blame] | 139 | WM831X_LDO1_LP_MODE, |
| 140 | WM831X_LDO1_LP_MODE); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 141 | if (ret < 0) |
| 142 | return ret; |
| 143 | |
| 144 | ret = wm831x_set_bits(wm831x, on_reg, |
| 145 | WM831X_LDO1_ON_MODE, |
| 146 | WM831X_LDO1_ON_MODE); |
| 147 | if (ret < 0) |
| 148 | return ret; |
| 149 | break; |
| 150 | |
| 151 | default: |
| 152 | return -EINVAL; |
| 153 | } |
| 154 | |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev) |
| 159 | { |
| 160 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 161 | struct wm831x *wm831x = ldo->wm831x; |
| 162 | int mask = 1 << rdev_get_id(rdev); |
| 163 | int ret; |
| 164 | |
| 165 | /* Is the regulator on? */ |
| 166 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); |
| 167 | if (ret < 0) |
| 168 | return ret; |
| 169 | if (!(ret & mask)) |
| 170 | return REGULATOR_STATUS_OFF; |
| 171 | |
| 172 | /* Is it reporting under voltage? */ |
| 173 | ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); |
Axel Lin | 363506c | 2012-07-31 21:28:26 +0800 | [diff] [blame] | 174 | if (ret < 0) |
| 175 | return ret; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 176 | if (ret & mask) |
| 177 | return REGULATOR_STATUS_ERROR; |
| 178 | |
| 179 | ret = wm831x_gp_ldo_get_mode(rdev); |
| 180 | if (ret < 0) |
| 181 | return ret; |
| 182 | else |
| 183 | return regulator_mode_to_status(ret); |
| 184 | } |
| 185 | |
| 186 | static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev, |
| 187 | int input_uV, |
| 188 | int output_uV, int load_uA) |
| 189 | { |
| 190 | if (load_uA < 20000) |
| 191 | return REGULATOR_MODE_STANDBY; |
| 192 | if (load_uA < 50000) |
| 193 | return REGULATOR_MODE_IDLE; |
| 194 | return REGULATOR_MODE_NORMAL; |
| 195 | } |
| 196 | |
| 197 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 198 | static const struct regulator_ops wm831x_gp_ldo_ops = { |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 199 | .list_voltage = regulator_list_voltage_linear_range, |
| 200 | .map_voltage = regulator_map_voltage_linear_range, |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 201 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 202 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 203 | .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage, |
| 204 | .get_mode = wm831x_gp_ldo_get_mode, |
| 205 | .set_mode = wm831x_gp_ldo_set_mode, |
| 206 | .get_status = wm831x_gp_ldo_get_status, |
| 207 | .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode, |
Mark Brown | 22c5fb6 | 2012-08-27 21:52:29 -0700 | [diff] [blame] | 208 | .get_bypass = regulator_get_bypass_regmap, |
| 209 | .set_bypass = regulator_set_bypass_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 210 | |
Mark Brown | ca8c361 | 2012-04-15 12:38:52 +0100 | [diff] [blame] | 211 | .is_enabled = regulator_is_enabled_regmap, |
| 212 | .enable = regulator_enable_regmap, |
| 213 | .disable = regulator_disable_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 214 | }; |
| 215 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 216 | static int wm831x_gp_ldo_probe(struct platform_device *pdev) |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 217 | { |
| 218 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 219 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 220 | struct regulator_config config = { }; |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 221 | int id; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 222 | struct wm831x_ldo *ldo; |
| 223 | struct resource *res; |
| 224 | int ret, irq; |
| 225 | |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 226 | if (pdata && pdata->wm831x_num) |
| 227 | id = (pdata->wm831x_num * 10) + 1; |
| 228 | else |
| 229 | id = 0; |
| 230 | id = pdev->id - id; |
| 231 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 232 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
| 233 | |
Mark Brown | fded2f4 | 2011-12-15 02:11:14 +0800 | [diff] [blame] | 234 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
Sachin Kamat | fae3b83 | 2014-02-20 14:23:22 +0530 | [diff] [blame] | 235 | if (!ldo) |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 236 | return -ENOMEM; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 237 | |
| 238 | ldo->wm831x = wm831x; |
| 239 | |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 240 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 241 | if (res == NULL) { |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 242 | dev_err(&pdev->dev, "No REG resource\n"); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 243 | ret = -EINVAL; |
| 244 | goto err; |
| 245 | } |
| 246 | ldo->base = res->start; |
| 247 | |
| 248 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); |
| 249 | ldo->desc.name = ldo->name; |
Mark Brown | f1aba13 | 2012-03-28 21:40:20 +0100 | [diff] [blame] | 250 | |
| 251 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), |
| 252 | "LDO%dVDD", id + 1); |
| 253 | ldo->desc.supply_name = ldo->supply_name; |
| 254 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 255 | ldo->desc.id = id; |
| 256 | ldo->desc.type = REGULATOR_VOLTAGE; |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 257 | ldo->desc.n_voltages = 32; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 258 | ldo->desc.ops = &wm831x_gp_ldo_ops; |
| 259 | ldo->desc.owner = THIS_MODULE; |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 260 | ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
| 261 | ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK; |
Mark Brown | ca8c361 | 2012-04-15 12:38:52 +0100 | [diff] [blame] | 262 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
| 263 | ldo->desc.enable_mask = 1 << id; |
Mark Brown | 22c5fb6 | 2012-08-27 21:52:29 -0700 | [diff] [blame] | 264 | ldo->desc.bypass_reg = ldo->base; |
| 265 | ldo->desc.bypass_mask = WM831X_LDO1_SWI; |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 266 | ldo->desc.linear_ranges = wm831x_gp_ldo_ranges; |
| 267 | ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 268 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 269 | config.dev = pdev->dev.parent; |
Mark Brown | b7ca878 | 2012-05-10 00:41:02 +0100 | [diff] [blame] | 270 | if (pdata) |
| 271 | config.init_data = pdata->ldo[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 272 | config.driver_data = ldo; |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 273 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 274 | |
Mark Brown | fc7c60e | 2013-08-31 12:00:17 +0100 | [diff] [blame] | 275 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
| 276 | &config); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 277 | if (IS_ERR(ldo->regulator)) { |
| 278 | ret = PTR_ERR(ldo->regulator); |
| 279 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", |
| 280 | id + 1, ret); |
| 281 | goto err; |
| 282 | } |
| 283 | |
Mark Brown | cd99758 | 2012-05-14 23:14:24 +0200 | [diff] [blame] | 284 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
Mark Brown | 41c7a87 | 2013-08-31 11:50:00 +0100 | [diff] [blame] | 285 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 286 | wm831x_ldo_uv_irq, |
Fabio Estevam | 2945473 | 2015-06-01 22:33:53 -0300 | [diff] [blame] | 287 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 288 | ldo->name, |
Mark Brown | 41c7a87 | 2013-08-31 11:50:00 +0100 | [diff] [blame] | 289 | ldo); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 290 | if (ret != 0) { |
| 291 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", |
| 292 | irq, ret); |
Mark Brown | fc7c60e | 2013-08-31 12:00:17 +0100 | [diff] [blame] | 293 | goto err; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | platform_set_drvdata(pdev, ldo); |
| 297 | |
| 298 | return 0; |
| 299 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 300 | err: |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 301 | return ret; |
| 302 | } |
| 303 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 304 | static struct platform_driver wm831x_gp_ldo_driver = { |
| 305 | .probe = wm831x_gp_ldo_probe, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 306 | .driver = { |
| 307 | .name = "wm831x-ldo", |
| 308 | }, |
| 309 | }; |
| 310 | |
| 311 | /* |
| 312 | * Analogue LDOs |
| 313 | */ |
| 314 | |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 315 | static const struct regulator_linear_range wm831x_aldo_ranges[] = { |
Axel Lin | 8828bae | 2013-10-11 09:32:18 +0800 | [diff] [blame] | 316 | REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000), |
| 317 | REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000), |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 318 | }; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 319 | |
| 320 | static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev, |
| 321 | int uV) |
| 322 | { |
| 323 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 324 | struct wm831x *wm831x = ldo->wm831x; |
| 325 | int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 326 | |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 327 | sel = regulator_map_voltage_linear_range(rdev, uV, uV); |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 328 | if (sel < 0) |
| 329 | return sel; |
| 330 | |
| 331 | return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 332 | } |
| 333 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 334 | static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev) |
| 335 | { |
| 336 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 337 | struct wm831x *wm831x = ldo->wm831x; |
| 338 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
Roel Kluin | 6f17c65 | 2009-12-15 20:07:31 +0100 | [diff] [blame] | 339 | int ret; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 340 | |
| 341 | ret = wm831x_reg_read(wm831x, on_reg); |
| 342 | if (ret < 0) |
| 343 | return 0; |
| 344 | |
| 345 | if (ret & WM831X_LDO7_ON_MODE) |
| 346 | return REGULATOR_MODE_IDLE; |
| 347 | else |
| 348 | return REGULATOR_MODE_NORMAL; |
| 349 | } |
| 350 | |
| 351 | static int wm831x_aldo_set_mode(struct regulator_dev *rdev, |
| 352 | unsigned int mode) |
| 353 | { |
| 354 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 355 | struct wm831x *wm831x = ldo->wm831x; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 356 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
| 357 | int ret; |
| 358 | |
| 359 | |
| 360 | switch (mode) { |
| 361 | case REGULATOR_MODE_NORMAL: |
Axel Lin | e841a36a | 2012-03-29 15:02:55 +0800 | [diff] [blame] | 362 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 363 | if (ret < 0) |
| 364 | return ret; |
| 365 | break; |
| 366 | |
| 367 | case REGULATOR_MODE_IDLE: |
Axel Lin | e841a36a | 2012-03-29 15:02:55 +0800 | [diff] [blame] | 368 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 369 | WM831X_LDO7_ON_MODE); |
| 370 | if (ret < 0) |
| 371 | return ret; |
| 372 | break; |
| 373 | |
| 374 | default: |
| 375 | return -EINVAL; |
| 376 | } |
| 377 | |
| 378 | return 0; |
| 379 | } |
| 380 | |
| 381 | static int wm831x_aldo_get_status(struct regulator_dev *rdev) |
| 382 | { |
| 383 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 384 | struct wm831x *wm831x = ldo->wm831x; |
| 385 | int mask = 1 << rdev_get_id(rdev); |
| 386 | int ret; |
| 387 | |
| 388 | /* Is the regulator on? */ |
| 389 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); |
| 390 | if (ret < 0) |
| 391 | return ret; |
| 392 | if (!(ret & mask)) |
| 393 | return REGULATOR_STATUS_OFF; |
| 394 | |
| 395 | /* Is it reporting under voltage? */ |
| 396 | ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); |
Axel Lin | 363506c | 2012-07-31 21:28:26 +0800 | [diff] [blame] | 397 | if (ret < 0) |
| 398 | return ret; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 399 | if (ret & mask) |
| 400 | return REGULATOR_STATUS_ERROR; |
| 401 | |
| 402 | ret = wm831x_aldo_get_mode(rdev); |
| 403 | if (ret < 0) |
| 404 | return ret; |
| 405 | else |
| 406 | return regulator_mode_to_status(ret); |
| 407 | } |
| 408 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 409 | static const struct regulator_ops wm831x_aldo_ops = { |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 410 | .list_voltage = regulator_list_voltage_linear_range, |
| 411 | .map_voltage = regulator_map_voltage_linear_range, |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 412 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 413 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 414 | .set_suspend_voltage = wm831x_aldo_set_suspend_voltage, |
| 415 | .get_mode = wm831x_aldo_get_mode, |
| 416 | .set_mode = wm831x_aldo_set_mode, |
| 417 | .get_status = wm831x_aldo_get_status, |
Mark Brown | 22c5fb6 | 2012-08-27 21:52:29 -0700 | [diff] [blame] | 418 | .set_bypass = regulator_set_bypass_regmap, |
| 419 | .get_bypass = regulator_get_bypass_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 420 | |
Mark Brown | ca8c361 | 2012-04-15 12:38:52 +0100 | [diff] [blame] | 421 | .is_enabled = regulator_is_enabled_regmap, |
| 422 | .enable = regulator_enable_regmap, |
| 423 | .disable = regulator_disable_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 424 | }; |
| 425 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 426 | static int wm831x_aldo_probe(struct platform_device *pdev) |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 427 | { |
| 428 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 429 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 430 | struct regulator_config config = { }; |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 431 | int id; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 432 | struct wm831x_ldo *ldo; |
| 433 | struct resource *res; |
| 434 | int ret, irq; |
| 435 | |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 436 | if (pdata && pdata->wm831x_num) |
| 437 | id = (pdata->wm831x_num * 10) + 1; |
| 438 | else |
| 439 | id = 0; |
| 440 | id = pdev->id - id; |
| 441 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 442 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
| 443 | |
Mark Brown | fded2f4 | 2011-12-15 02:11:14 +0800 | [diff] [blame] | 444 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
Sachin Kamat | fae3b83 | 2014-02-20 14:23:22 +0530 | [diff] [blame] | 445 | if (!ldo) |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 446 | return -ENOMEM; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 447 | |
| 448 | ldo->wm831x = wm831x; |
| 449 | |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 450 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 451 | if (res == NULL) { |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 452 | dev_err(&pdev->dev, "No REG resource\n"); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 453 | ret = -EINVAL; |
| 454 | goto err; |
| 455 | } |
| 456 | ldo->base = res->start; |
| 457 | |
| 458 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); |
| 459 | ldo->desc.name = ldo->name; |
Mark Brown | f1aba13 | 2012-03-28 21:40:20 +0100 | [diff] [blame] | 460 | |
| 461 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), |
| 462 | "LDO%dVDD", id + 1); |
| 463 | ldo->desc.supply_name = ldo->supply_name; |
| 464 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 465 | ldo->desc.id = id; |
| 466 | ldo->desc.type = REGULATOR_VOLTAGE; |
Mark Brown | 5ff26a1 | 2013-07-02 23:35:22 +0100 | [diff] [blame] | 467 | ldo->desc.n_voltages = 32; |
| 468 | ldo->desc.linear_ranges = wm831x_aldo_ranges; |
| 469 | ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 470 | ldo->desc.ops = &wm831x_aldo_ops; |
| 471 | ldo->desc.owner = THIS_MODULE; |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 472 | ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
| 473 | ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK; |
Mark Brown | ca8c361 | 2012-04-15 12:38:52 +0100 | [diff] [blame] | 474 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
| 475 | ldo->desc.enable_mask = 1 << id; |
Mark Brown | 22c5fb6 | 2012-08-27 21:52:29 -0700 | [diff] [blame] | 476 | ldo->desc.bypass_reg = ldo->base; |
| 477 | ldo->desc.bypass_mask = WM831X_LDO7_SWI; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 478 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 479 | config.dev = pdev->dev.parent; |
Mark Brown | b7ca878 | 2012-05-10 00:41:02 +0100 | [diff] [blame] | 480 | if (pdata) |
| 481 | config.init_data = pdata->ldo[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 482 | config.driver_data = ldo; |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 483 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 484 | |
Mark Brown | fc7c60e | 2013-08-31 12:00:17 +0100 | [diff] [blame] | 485 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
| 486 | &config); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 487 | if (IS_ERR(ldo->regulator)) { |
| 488 | ret = PTR_ERR(ldo->regulator); |
| 489 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", |
| 490 | id + 1, ret); |
| 491 | goto err; |
| 492 | } |
| 493 | |
Mark Brown | cd99758 | 2012-05-14 23:14:24 +0200 | [diff] [blame] | 494 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
Mark Brown | 41c7a87 | 2013-08-31 11:50:00 +0100 | [diff] [blame] | 495 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 496 | wm831x_ldo_uv_irq, |
Fabio Estevam | 2945473 | 2015-06-01 22:33:53 -0300 | [diff] [blame] | 497 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 498 | ldo->name, ldo); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 499 | if (ret != 0) { |
| 500 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", |
| 501 | irq, ret); |
Mark Brown | fc7c60e | 2013-08-31 12:00:17 +0100 | [diff] [blame] | 502 | goto err; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | platform_set_drvdata(pdev, ldo); |
| 506 | |
| 507 | return 0; |
| 508 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 509 | err: |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 510 | return ret; |
| 511 | } |
| 512 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 513 | static struct platform_driver wm831x_aldo_driver = { |
| 514 | .probe = wm831x_aldo_probe, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 515 | .driver = { |
| 516 | .name = "wm831x-aldo", |
| 517 | }, |
| 518 | }; |
| 519 | |
| 520 | /* |
| 521 | * Alive LDO |
| 522 | */ |
| 523 | |
| 524 | #define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf |
| 525 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 526 | static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev, |
| 527 | int uV) |
| 528 | { |
| 529 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 530 | struct wm831x *wm831x = ldo->wm831x; |
| 531 | int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 532 | |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 533 | sel = regulator_map_voltage_linear(rdev, uV, uV); |
| 534 | if (sel < 0) |
| 535 | return sel; |
| 536 | |
| 537 | return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 538 | } |
| 539 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 540 | static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev) |
| 541 | { |
| 542 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); |
| 543 | struct wm831x *wm831x = ldo->wm831x; |
| 544 | int mask = 1 << rdev_get_id(rdev); |
| 545 | int ret; |
| 546 | |
| 547 | /* Is the regulator on? */ |
| 548 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); |
| 549 | if (ret < 0) |
| 550 | return ret; |
| 551 | if (ret & mask) |
| 552 | return REGULATOR_STATUS_ON; |
| 553 | else |
| 554 | return REGULATOR_STATUS_OFF; |
| 555 | } |
| 556 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 557 | static const struct regulator_ops wm831x_alive_ldo_ops = { |
Mark Brown | d31e954 | 2012-05-09 21:53:32 +0100 | [diff] [blame] | 558 | .list_voltage = regulator_list_voltage_linear, |
Axel Lin | c2543b5 | 2012-05-31 17:39:00 +0800 | [diff] [blame] | 559 | .map_voltage = regulator_map_voltage_linear, |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 560 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | 0a47968 | 2012-06-12 10:46:43 +0800 | [diff] [blame] | 561 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 562 | .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage, |
| 563 | .get_status = wm831x_alive_ldo_get_status, |
| 564 | |
Mark Brown | ca8c361 | 2012-04-15 12:38:52 +0100 | [diff] [blame] | 565 | .is_enabled = regulator_is_enabled_regmap, |
| 566 | .enable = regulator_enable_regmap, |
| 567 | .disable = regulator_disable_regmap, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 568 | }; |
| 569 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 570 | static int wm831x_alive_ldo_probe(struct platform_device *pdev) |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 571 | { |
| 572 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 573 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 574 | struct regulator_config config = { }; |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 575 | int id; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 576 | struct wm831x_ldo *ldo; |
| 577 | struct resource *res; |
| 578 | int ret; |
| 579 | |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 580 | if (pdata && pdata->wm831x_num) |
| 581 | id = (pdata->wm831x_num * 10) + 1; |
| 582 | else |
| 583 | id = 0; |
| 584 | id = pdev->id - id; |
| 585 | |
| 586 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 587 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
| 588 | |
Mark Brown | fded2f4 | 2011-12-15 02:11:14 +0800 | [diff] [blame] | 589 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
Sachin Kamat | fae3b83 | 2014-02-20 14:23:22 +0530 | [diff] [blame] | 590 | if (!ldo) |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 591 | return -ENOMEM; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 592 | |
| 593 | ldo->wm831x = wm831x; |
| 594 | |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 595 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 596 | if (res == NULL) { |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 597 | dev_err(&pdev->dev, "No REG resource\n"); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 598 | ret = -EINVAL; |
| 599 | goto err; |
| 600 | } |
| 601 | ldo->base = res->start; |
| 602 | |
| 603 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); |
| 604 | ldo->desc.name = ldo->name; |
Mark Brown | f1aba13 | 2012-03-28 21:40:20 +0100 | [diff] [blame] | 605 | |
| 606 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), |
| 607 | "LDO%dVDD", id + 1); |
| 608 | ldo->desc.supply_name = ldo->supply_name; |
| 609 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 610 | ldo->desc.id = id; |
| 611 | ldo->desc.type = REGULATOR_VOLTAGE; |
| 612 | ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1; |
| 613 | ldo->desc.ops = &wm831x_alive_ldo_ops; |
| 614 | ldo->desc.owner = THIS_MODULE; |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 615 | ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL; |
| 616 | ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK; |
Mark Brown | ca8c361 | 2012-04-15 12:38:52 +0100 | [diff] [blame] | 617 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
| 618 | ldo->desc.enable_mask = 1 << id; |
Mark Brown | d31e954 | 2012-05-09 21:53:32 +0100 | [diff] [blame] | 619 | ldo->desc.min_uV = 800000; |
| 620 | ldo->desc.uV_step = 50000; |
Mark Brown | eefaa3c | 2012-06-27 15:00:02 +0100 | [diff] [blame] | 621 | ldo->desc.enable_time = 1000; |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 622 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 623 | config.dev = pdev->dev.parent; |
Mark Brown | b7ca878 | 2012-05-10 00:41:02 +0100 | [diff] [blame] | 624 | if (pdata) |
| 625 | config.init_data = pdata->ldo[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 626 | config.driver_data = ldo; |
Mark Brown | ac663b4 | 2012-04-15 11:55:55 +0100 | [diff] [blame] | 627 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 628 | |
Mark Brown | fc7c60e | 2013-08-31 12:00:17 +0100 | [diff] [blame] | 629 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
| 630 | &config); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 631 | if (IS_ERR(ldo->regulator)) { |
| 632 | ret = PTR_ERR(ldo->regulator); |
| 633 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", |
| 634 | id + 1, ret); |
| 635 | goto err; |
| 636 | } |
| 637 | |
| 638 | platform_set_drvdata(pdev, ldo); |
| 639 | |
| 640 | return 0; |
| 641 | |
| 642 | err: |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 643 | return ret; |
| 644 | } |
| 645 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 646 | static struct platform_driver wm831x_alive_ldo_driver = { |
| 647 | .probe = wm831x_alive_ldo_probe, |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 648 | .driver = { |
| 649 | .name = "wm831x-alive-ldo", |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 650 | }, |
| 651 | }; |
| 652 | |
Thierry Reding | 92a513b | 2015-12-02 17:32:53 +0100 | [diff] [blame] | 653 | static struct platform_driver * const drivers[] = { |
| 654 | &wm831x_gp_ldo_driver, |
| 655 | &wm831x_aldo_driver, |
| 656 | &wm831x_alive_ldo_driver, |
| 657 | }; |
| 658 | |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 659 | static int __init wm831x_ldo_init(void) |
| 660 | { |
Thierry Reding | 92a513b | 2015-12-02 17:32:53 +0100 | [diff] [blame] | 661 | return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 662 | } |
| 663 | subsys_initcall(wm831x_ldo_init); |
| 664 | |
| 665 | static void __exit wm831x_ldo_exit(void) |
| 666 | { |
Thierry Reding | 92a513b | 2015-12-02 17:32:53 +0100 | [diff] [blame] | 667 | platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); |
Mark Brown | d1c6b4f | 2009-07-28 15:22:02 +0100 | [diff] [blame] | 668 | } |
| 669 | module_exit(wm831x_ldo_exit); |
| 670 | |
| 671 | /* Module information */ |
| 672 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| 673 | MODULE_DESCRIPTION("WM831x LDO driver"); |
| 674 | MODULE_LICENSE("GPL"); |
| 675 | MODULE_ALIAS("platform:wm831x-ldo"); |
| 676 | MODULE_ALIAS("platform:wm831x-aldo"); |
| 677 | MODULE_ALIAS("platform:wm831x-aliveldo"); |