Axel Lin | 3cad5fc | 2019-04-17 22:16:30 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | // |
| 3 | // wm831x-dcdc.c -- DC-DC buck converter driver for the WM831x series |
| 4 | // |
| 5 | // Copyright 2009 Wolfson Microelectronics PLC. |
| 6 | // |
| 7 | // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +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> |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 17 | #include <linux/regulator/machine.h> |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 18 | #include <linux/gpio/consumer.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 19 | #include <linux/slab.h> |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 20 | |
| 21 | #include <linux/mfd/wm831x/core.h> |
| 22 | #include <linux/mfd/wm831x/regulator.h> |
| 23 | #include <linux/mfd/wm831x/pdata.h> |
| 24 | |
| 25 | #define WM831X_BUCKV_MAX_SELECTOR 0x68 |
| 26 | #define WM831X_BUCKP_MAX_SELECTOR 0x66 |
| 27 | |
| 28 | #define WM831X_DCDC_MODE_FAST 0 |
| 29 | #define WM831X_DCDC_MODE_NORMAL 1 |
| 30 | #define WM831X_DCDC_MODE_IDLE 2 |
| 31 | #define WM831X_DCDC_MODE_STANDBY 3 |
| 32 | |
Mark Brown | 82caa97 | 2012-03-28 21:40:42 +0100 | [diff] [blame] | 33 | #define WM831X_DCDC_MAX_NAME 9 |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 34 | |
| 35 | /* Register offsets in control block */ |
| 36 | #define WM831X_DCDC_CONTROL_1 0 |
| 37 | #define WM831X_DCDC_CONTROL_2 1 |
| 38 | #define WM831X_DCDC_ON_CONFIG 2 |
| 39 | #define WM831X_DCDC_SLEEP_CONTROL 3 |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 40 | #define WM831X_DCDC_DVS_CONTROL 4 |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 41 | |
| 42 | /* |
| 43 | * Shared |
| 44 | */ |
| 45 | |
| 46 | struct wm831x_dcdc { |
| 47 | char name[WM831X_DCDC_MAX_NAME]; |
Mark Brown | 82caa97 | 2012-03-28 21:40:42 +0100 | [diff] [blame] | 48 | char supply_name[WM831X_DCDC_MAX_NAME]; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 49 | struct regulator_desc desc; |
| 50 | int base; |
| 51 | struct wm831x *wm831x; |
| 52 | struct regulator_dev *regulator; |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 53 | struct gpio_desc *dvs_gpiod; |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 54 | int dvs_gpio_state; |
| 55 | int on_vsel; |
| 56 | int dvs_vsel; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 57 | }; |
| 58 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 59 | static unsigned int wm831x_dcdc_get_mode(struct regulator_dev *rdev) |
| 60 | |
| 61 | { |
| 62 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 63 | struct wm831x *wm831x = dcdc->wm831x; |
| 64 | u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG; |
| 65 | int val; |
| 66 | |
| 67 | val = wm831x_reg_read(wm831x, reg); |
| 68 | if (val < 0) |
| 69 | return val; |
| 70 | |
| 71 | val = (val & WM831X_DC1_ON_MODE_MASK) >> WM831X_DC1_ON_MODE_SHIFT; |
| 72 | |
| 73 | switch (val) { |
| 74 | case WM831X_DCDC_MODE_FAST: |
| 75 | return REGULATOR_MODE_FAST; |
| 76 | case WM831X_DCDC_MODE_NORMAL: |
| 77 | return REGULATOR_MODE_NORMAL; |
| 78 | case WM831X_DCDC_MODE_STANDBY: |
| 79 | return REGULATOR_MODE_STANDBY; |
| 80 | case WM831X_DCDC_MODE_IDLE: |
| 81 | return REGULATOR_MODE_IDLE; |
| 82 | default: |
| 83 | BUG(); |
Mark Brown | 9ee291a | 2011-02-02 20:17:22 +0000 | [diff] [blame] | 84 | return -EINVAL; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 85 | } |
| 86 | } |
| 87 | |
| 88 | static int wm831x_dcdc_set_mode_int(struct wm831x *wm831x, int reg, |
| 89 | unsigned int mode) |
| 90 | { |
| 91 | int val; |
| 92 | |
| 93 | switch (mode) { |
| 94 | case REGULATOR_MODE_FAST: |
| 95 | val = WM831X_DCDC_MODE_FAST; |
| 96 | break; |
| 97 | case REGULATOR_MODE_NORMAL: |
| 98 | val = WM831X_DCDC_MODE_NORMAL; |
| 99 | break; |
| 100 | case REGULATOR_MODE_STANDBY: |
| 101 | val = WM831X_DCDC_MODE_STANDBY; |
| 102 | break; |
| 103 | case REGULATOR_MODE_IDLE: |
| 104 | val = WM831X_DCDC_MODE_IDLE; |
| 105 | break; |
| 106 | default: |
| 107 | return -EINVAL; |
| 108 | } |
| 109 | |
| 110 | return wm831x_set_bits(wm831x, reg, WM831X_DC1_ON_MODE_MASK, |
| 111 | val << WM831X_DC1_ON_MODE_SHIFT); |
| 112 | } |
| 113 | |
| 114 | static int wm831x_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode) |
| 115 | { |
| 116 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 117 | struct wm831x *wm831x = dcdc->wm831x; |
| 118 | u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG; |
| 119 | |
| 120 | return wm831x_dcdc_set_mode_int(wm831x, reg, mode); |
| 121 | } |
| 122 | |
| 123 | static int wm831x_dcdc_set_suspend_mode(struct regulator_dev *rdev, |
| 124 | unsigned int mode) |
| 125 | { |
| 126 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 127 | struct wm831x *wm831x = dcdc->wm831x; |
| 128 | u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL; |
| 129 | |
| 130 | return wm831x_dcdc_set_mode_int(wm831x, reg, mode); |
| 131 | } |
| 132 | |
| 133 | static int wm831x_dcdc_get_status(struct regulator_dev *rdev) |
| 134 | { |
| 135 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 136 | struct wm831x *wm831x = dcdc->wm831x; |
| 137 | int ret; |
| 138 | |
| 139 | /* First, check for errors */ |
| 140 | ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS); |
| 141 | if (ret < 0) |
| 142 | return ret; |
| 143 | |
| 144 | if (ret & (1 << rdev_get_id(rdev))) { |
| 145 | dev_dbg(wm831x->dev, "DCDC%d under voltage\n", |
| 146 | rdev_get_id(rdev) + 1); |
| 147 | return REGULATOR_STATUS_ERROR; |
| 148 | } |
| 149 | |
| 150 | /* DCDC1 and DCDC2 can additionally detect high voltage/current */ |
| 151 | if (rdev_get_id(rdev) < 2) { |
| 152 | if (ret & (WM831X_DC1_OV_STS << rdev_get_id(rdev))) { |
| 153 | dev_dbg(wm831x->dev, "DCDC%d over voltage\n", |
| 154 | rdev_get_id(rdev) + 1); |
| 155 | return REGULATOR_STATUS_ERROR; |
| 156 | } |
| 157 | |
| 158 | if (ret & (WM831X_DC1_HC_STS << rdev_get_id(rdev))) { |
| 159 | dev_dbg(wm831x->dev, "DCDC%d over current\n", |
| 160 | rdev_get_id(rdev) + 1); |
| 161 | return REGULATOR_STATUS_ERROR; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | /* Is the regulator on? */ |
| 166 | ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS); |
| 167 | if (ret < 0) |
| 168 | return ret; |
| 169 | if (!(ret & (1 << rdev_get_id(rdev)))) |
| 170 | return REGULATOR_STATUS_OFF; |
| 171 | |
| 172 | /* TODO: When we handle hardware control modes so we can report the |
| 173 | * current mode. */ |
| 174 | return REGULATOR_STATUS_ON; |
| 175 | } |
| 176 | |
| 177 | static irqreturn_t wm831x_dcdc_uv_irq(int irq, void *data) |
| 178 | { |
| 179 | struct wm831x_dcdc *dcdc = data; |
| 180 | |
Steve Twiss | 119c4f5 | 2019-02-26 15:48:46 +0000 | [diff] [blame] | 181 | regulator_lock(dcdc->regulator); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 182 | regulator_notifier_call_chain(dcdc->regulator, |
| 183 | REGULATOR_EVENT_UNDER_VOLTAGE, |
| 184 | NULL); |
Steve Twiss | 119c4f5 | 2019-02-26 15:48:46 +0000 | [diff] [blame] | 185 | regulator_unlock(dcdc->regulator); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 186 | |
| 187 | return IRQ_HANDLED; |
| 188 | } |
| 189 | |
| 190 | static irqreturn_t wm831x_dcdc_oc_irq(int irq, void *data) |
| 191 | { |
| 192 | struct wm831x_dcdc *dcdc = data; |
| 193 | |
Steve Twiss | 119c4f5 | 2019-02-26 15:48:46 +0000 | [diff] [blame] | 194 | regulator_lock(dcdc->regulator); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 195 | regulator_notifier_call_chain(dcdc->regulator, |
| 196 | REGULATOR_EVENT_OVER_CURRENT, |
| 197 | NULL); |
Steve Twiss | 119c4f5 | 2019-02-26 15:48:46 +0000 | [diff] [blame] | 198 | regulator_unlock(dcdc->regulator); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 199 | |
| 200 | return IRQ_HANDLED; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * BUCKV specifics |
| 205 | */ |
| 206 | |
Matti Vaittinen | 60ab7f4 | 2020-05-08 18:43:36 +0300 | [diff] [blame] | 207 | static const struct linear_range wm831x_buckv_ranges[] = { |
Axel Lin | ccffcb8 | 2019-01-20 15:33:56 +0800 | [diff] [blame] | 208 | REGULATOR_LINEAR_RANGE(600000, 0, 0x7, 0), |
| 209 | REGULATOR_LINEAR_RANGE(600000, 0x8, 0x68, 12500), |
| 210 | }; |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 211 | |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 212 | static int wm831x_buckv_set_dvs(struct regulator_dev *rdev, int state) |
| 213 | { |
| 214 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 215 | |
| 216 | if (state == dcdc->dvs_gpio_state) |
| 217 | return 0; |
| 218 | |
| 219 | dcdc->dvs_gpio_state = state; |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 220 | gpiod_set_value(dcdc->dvs_gpiod, state); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 221 | |
| 222 | /* Should wait for DVS state change to be asserted if we have |
| 223 | * a GPIO for it, for now assume the device is configured |
| 224 | * for the fastest possible transition. |
| 225 | */ |
| 226 | |
| 227 | return 0; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 228 | } |
| 229 | |
Axel Lin | b5fb77e | 2012-06-13 20:29:17 +0800 | [diff] [blame] | 230 | static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev, |
| 231 | unsigned vsel) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 232 | { |
| 233 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 234 | struct wm831x *wm831x = dcdc->wm831x; |
| 235 | int on_reg = dcdc->base + WM831X_DCDC_ON_CONFIG; |
| 236 | int dvs_reg = dcdc->base + WM831X_DCDC_DVS_CONTROL; |
Axel Lin | b5fb77e | 2012-06-13 20:29:17 +0800 | [diff] [blame] | 237 | int ret; |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 238 | |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 239 | /* If this value is already set then do a GPIO update if we can */ |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 240 | if (dcdc->dvs_gpiod && dcdc->on_vsel == vsel) |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 241 | return wm831x_buckv_set_dvs(rdev, 0); |
| 242 | |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 243 | if (dcdc->dvs_gpiod && dcdc->dvs_vsel == vsel) |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 244 | return wm831x_buckv_set_dvs(rdev, 1); |
| 245 | |
| 246 | /* Always set the ON status to the minimum voltage */ |
| 247 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_DC1_ON_VSEL_MASK, vsel); |
| 248 | if (ret < 0) |
| 249 | return ret; |
| 250 | dcdc->on_vsel = vsel; |
| 251 | |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 252 | if (!dcdc->dvs_gpiod) |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 253 | return ret; |
| 254 | |
| 255 | /* Kick the voltage transition now */ |
| 256 | ret = wm831x_buckv_set_dvs(rdev, 0); |
| 257 | if (ret < 0) |
| 258 | return ret; |
| 259 | |
Mark Brown | 88cda60 | 2011-07-25 22:20:34 +0100 | [diff] [blame] | 260 | /* |
| 261 | * If this VSEL is higher than the last one we've seen then |
| 262 | * remember it as the DVS VSEL. This is optimised for CPUfreq |
| 263 | * usage where we want to get to the highest voltage very |
| 264 | * quickly. |
| 265 | */ |
| 266 | if (vsel > dcdc->dvs_vsel) { |
| 267 | ret = wm831x_set_bits(wm831x, dvs_reg, |
| 268 | WM831X_DC1_DVS_VSEL_MASK, |
Mark Brown | 13ae633 | 2012-11-20 10:02:06 +0900 | [diff] [blame] | 269 | vsel); |
Mark Brown | 88cda60 | 2011-07-25 22:20:34 +0100 | [diff] [blame] | 270 | if (ret == 0) |
| 271 | dcdc->dvs_vsel = vsel; |
| 272 | else |
| 273 | dev_warn(wm831x->dev, |
| 274 | "Failed to set DCDC DVS VSEL: %d\n", ret); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 275 | } |
| 276 | |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 277 | return 0; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | static int wm831x_buckv_set_suspend_voltage(struct regulator_dev *rdev, |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 281 | int uV) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 282 | { |
| 283 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 284 | struct wm831x *wm831x = dcdc->wm831x; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 285 | u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL; |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 286 | int vsel; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 287 | |
Axel Lin | ccffcb8 | 2019-01-20 15:33:56 +0800 | [diff] [blame] | 288 | vsel = regulator_map_voltage_linear_range(rdev, uV, uV); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 289 | if (vsel < 0) |
| 290 | return vsel; |
| 291 | |
| 292 | return wm831x_set_bits(wm831x, reg, WM831X_DC1_SLP_VSEL_MASK, vsel); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 293 | } |
| 294 | |
Mark Brown | afb8bb8 | 2010-12-10 17:28:08 +0000 | [diff] [blame] | 295 | static int wm831x_buckv_get_voltage_sel(struct regulator_dev *rdev) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 296 | { |
| 297 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 298 | |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 299 | if (dcdc->dvs_gpiod && dcdc->dvs_gpio_state) |
Mark Brown | afb8bb8 | 2010-12-10 17:28:08 +0000 | [diff] [blame] | 300 | return dcdc->dvs_vsel; |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 301 | else |
Mark Brown | afb8bb8 | 2010-12-10 17:28:08 +0000 | [diff] [blame] | 302 | return dcdc->on_vsel; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | /* Current limit options */ |
Axel Lin | c25d478 | 2019-02-24 21:16:51 +0800 | [diff] [blame] | 306 | static const unsigned int wm831x_dcdc_ilim[] = { |
| 307 | 125000, 250000, 375000, 500000, 625000, 750000, 875000, 1000000 |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 308 | }; |
| 309 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 310 | static const struct regulator_ops wm831x_buckv_ops = { |
Axel Lin | b5fb77e | 2012-06-13 20:29:17 +0800 | [diff] [blame] | 311 | .set_voltage_sel = wm831x_buckv_set_voltage_sel, |
Mark Brown | afb8bb8 | 2010-12-10 17:28:08 +0000 | [diff] [blame] | 312 | .get_voltage_sel = wm831x_buckv_get_voltage_sel, |
Axel Lin | ccffcb8 | 2019-01-20 15:33:56 +0800 | [diff] [blame] | 313 | .list_voltage = regulator_list_voltage_linear_range, |
| 314 | .map_voltage = regulator_map_voltage_linear_range, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 315 | .set_suspend_voltage = wm831x_buckv_set_suspend_voltage, |
Axel Lin | 20eb641 | 2019-02-28 21:40:22 +0800 | [diff] [blame] | 316 | .set_current_limit = regulator_set_current_limit_regmap, |
| 317 | .get_current_limit = regulator_get_current_limit_regmap, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 318 | |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 319 | .is_enabled = regulator_is_enabled_regmap, |
| 320 | .enable = regulator_enable_regmap, |
| 321 | .disable = regulator_disable_regmap, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 322 | .get_status = wm831x_dcdc_get_status, |
| 323 | .get_mode = wm831x_dcdc_get_mode, |
| 324 | .set_mode = wm831x_dcdc_set_mode, |
| 325 | .set_suspend_mode = wm831x_dcdc_set_suspend_mode, |
| 326 | }; |
| 327 | |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 328 | /* |
| 329 | * Set up DVS control. We just log errors since we can still run |
| 330 | * (with reduced performance) if we fail. |
| 331 | */ |
Mark Brown | 1aa20d2 | 2013-08-31 11:42:46 +0100 | [diff] [blame] | 332 | static void wm831x_buckv_dvs_init(struct platform_device *pdev, |
| 333 | struct wm831x_dcdc *dcdc, |
| 334 | struct wm831x_buckv_pdata *pdata) |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 335 | { |
| 336 | struct wm831x *wm831x = dcdc->wm831x; |
| 337 | int ret; |
| 338 | u16 ctrl; |
| 339 | |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 340 | if (!pdata) |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 341 | return; |
| 342 | |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 343 | /* gpiolib won't let us read the GPIO status so pick the higher |
| 344 | * of the two existing voltages so we take it as platform data. |
| 345 | */ |
| 346 | dcdc->dvs_gpio_state = pdata->dvs_init_state; |
| 347 | |
Linus Walleij | 9a5ed0b | 2019-06-12 09:42:22 +0200 | [diff] [blame] | 348 | dcdc->dvs_gpiod = devm_gpiod_get(&pdev->dev, "dvs", |
| 349 | dcdc->dvs_gpio_state ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW); |
| 350 | if (IS_ERR(dcdc->dvs_gpiod)) { |
| 351 | dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %ld\n", |
| 352 | dcdc->name, PTR_ERR(dcdc->dvs_gpiod)); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 353 | return; |
| 354 | } |
| 355 | |
Mark Brown | b47ba9fd | 2011-07-25 22:20:32 +0100 | [diff] [blame] | 356 | switch (pdata->dvs_control_src) { |
| 357 | case 1: |
| 358 | ctrl = 2 << WM831X_DC1_DVS_SRC_SHIFT; |
| 359 | break; |
| 360 | case 2: |
| 361 | ctrl = 3 << WM831X_DC1_DVS_SRC_SHIFT; |
| 362 | break; |
| 363 | default: |
| 364 | dev_err(wm831x->dev, "Invalid DVS control source %d for %s\n", |
| 365 | pdata->dvs_control_src, dcdc->name); |
| 366 | return; |
| 367 | } |
| 368 | |
Mark Brown | c439b8f | 2011-07-25 22:20:33 +0100 | [diff] [blame] | 369 | /* If DVS_VSEL is set to the minimum value then raise it to ON_VSEL |
| 370 | * to make bootstrapping a bit smoother. |
| 371 | */ |
| 372 | if (!dcdc->dvs_vsel) { |
| 373 | ret = wm831x_set_bits(wm831x, |
| 374 | dcdc->base + WM831X_DCDC_DVS_CONTROL, |
| 375 | WM831X_DC1_DVS_VSEL_MASK, dcdc->on_vsel); |
| 376 | if (ret == 0) |
| 377 | dcdc->dvs_vsel = dcdc->on_vsel; |
| 378 | else |
| 379 | dev_warn(wm831x->dev, "Failed to set DVS_VSEL: %d\n", |
| 380 | ret); |
| 381 | } |
| 382 | |
Mark Brown | b47ba9fd | 2011-07-25 22:20:32 +0100 | [diff] [blame] | 383 | ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL, |
| 384 | WM831X_DC1_DVS_SRC_MASK, ctrl); |
| 385 | if (ret < 0) { |
| 386 | dev_err(wm831x->dev, "Failed to set %s DVS source: %d\n", |
| 387 | dcdc->name, ret); |
| 388 | } |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 389 | } |
| 390 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 391 | static int wm831x_buckv_probe(struct platform_device *pdev) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 392 | { |
| 393 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 394 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 395 | struct regulator_config config = { }; |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 396 | int id; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 397 | struct wm831x_dcdc *dcdc; |
| 398 | struct resource *res; |
| 399 | int ret, irq; |
| 400 | |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 401 | if (pdata && pdata->wm831x_num) |
| 402 | id = (pdata->wm831x_num * 10) + 1; |
| 403 | else |
| 404 | id = 0; |
| 405 | id = pdev->id - id; |
| 406 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 407 | dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1); |
| 408 | |
Mark Brown | fded2f4 | 2011-12-15 02:11:14 +0800 | [diff] [blame] | 409 | dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), |
| 410 | GFP_KERNEL); |
Sachin Kamat | 5730aa5 | 2014-02-20 14:23:20 +0530 | [diff] [blame] | 411 | if (!dcdc) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 412 | return -ENOMEM; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 413 | |
| 414 | dcdc->wm831x = wm831x; |
| 415 | |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 416 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 417 | if (res == NULL) { |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 418 | dev_err(&pdev->dev, "No REG resource\n"); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 419 | ret = -EINVAL; |
| 420 | goto err; |
| 421 | } |
| 422 | dcdc->base = res->start; |
| 423 | |
| 424 | snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1); |
| 425 | dcdc->desc.name = dcdc->name; |
Mark Brown | 82caa97 | 2012-03-28 21:40:42 +0100 | [diff] [blame] | 426 | |
| 427 | snprintf(dcdc->supply_name, sizeof(dcdc->supply_name), |
| 428 | "DC%dVDD", id + 1); |
| 429 | dcdc->desc.supply_name = dcdc->supply_name; |
| 430 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 431 | dcdc->desc.id = id; |
| 432 | dcdc->desc.type = REGULATOR_VOLTAGE; |
| 433 | dcdc->desc.n_voltages = WM831X_BUCKV_MAX_SELECTOR + 1; |
Axel Lin | ccffcb8 | 2019-01-20 15:33:56 +0800 | [diff] [blame] | 434 | dcdc->desc.linear_ranges = wm831x_buckv_ranges; |
| 435 | dcdc->desc.n_linear_ranges = ARRAY_SIZE(wm831x_buckv_ranges); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 436 | dcdc->desc.ops = &wm831x_buckv_ops; |
| 437 | dcdc->desc.owner = THIS_MODULE; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 438 | dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; |
| 439 | dcdc->desc.enable_mask = 1 << id; |
Axel Lin | 20eb641 | 2019-02-28 21:40:22 +0800 | [diff] [blame] | 440 | dcdc->desc.csel_reg = dcdc->base + WM831X_DCDC_CONTROL_2; |
| 441 | dcdc->desc.csel_mask = WM831X_DC1_HC_THR_MASK; |
| 442 | dcdc->desc.n_current_limits = ARRAY_SIZE(wm831x_dcdc_ilim); |
| 443 | dcdc->desc.curr_table = wm831x_dcdc_ilim; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 444 | |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 445 | ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_ON_CONFIG); |
| 446 | if (ret < 0) { |
| 447 | dev_err(wm831x->dev, "Failed to read ON VSEL: %d\n", ret); |
| 448 | goto err; |
| 449 | } |
| 450 | dcdc->on_vsel = ret & WM831X_DC1_ON_VSEL_MASK; |
| 451 | |
Mark Brown | a1b81dd | 2011-07-25 22:20:30 +0100 | [diff] [blame] | 452 | ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 453 | if (ret < 0) { |
| 454 | dev_err(wm831x->dev, "Failed to read DVS VSEL: %d\n", ret); |
| 455 | goto err; |
| 456 | } |
| 457 | dcdc->dvs_vsel = ret & WM831X_DC1_DVS_VSEL_MASK; |
| 458 | |
Mark Brown | f0b067d | 2012-05-14 11:37:09 +0100 | [diff] [blame] | 459 | if (pdata && pdata->dcdc[id]) |
Mark Brown | 1aa20d2 | 2013-08-31 11:42:46 +0100 | [diff] [blame] | 460 | wm831x_buckv_dvs_init(pdev, dcdc, |
| 461 | pdata->dcdc[id]->driver_data); |
Mark Brown | e24a04c | 2009-09-22 08:47:11 -0700 | [diff] [blame] | 462 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 463 | config.dev = pdev->dev.parent; |
Mark Brown | b7ca878 | 2012-05-10 00:41:02 +0100 | [diff] [blame] | 464 | if (pdata) |
| 465 | config.init_data = pdata->dcdc[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 466 | config.driver_data = dcdc; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 467 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 468 | |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 469 | dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, |
| 470 | &config); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 471 | if (IS_ERR(dcdc->regulator)) { |
| 472 | ret = PTR_ERR(dcdc->regulator); |
| 473 | dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", |
| 474 | id + 1, ret); |
| 475 | goto err; |
| 476 | } |
| 477 | |
Mark Brown | cd99758 | 2012-05-14 23:14:24 +0200 | [diff] [blame] | 478 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
Mark Brown | b0c4c0c | 2013-08-31 11:47:39 +0100 | [diff] [blame] | 479 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 480 | wm831x_dcdc_uv_irq, |
Fabio Estevam | 2945473 | 2015-06-01 22:33:53 -0300 | [diff] [blame] | 481 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 482 | dcdc->name, dcdc); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 483 | if (ret != 0) { |
| 484 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", |
| 485 | irq, ret); |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 486 | goto err; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 487 | } |
| 488 | |
Mark Brown | cd99758 | 2012-05-14 23:14:24 +0200 | [diff] [blame] | 489 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC")); |
Mark Brown | b0c4c0c | 2013-08-31 11:47:39 +0100 | [diff] [blame] | 490 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 491 | wm831x_dcdc_oc_irq, |
Fabio Estevam | 2945473 | 2015-06-01 22:33:53 -0300 | [diff] [blame] | 492 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 493 | dcdc->name, dcdc); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 494 | if (ret != 0) { |
| 495 | dev_err(&pdev->dev, "Failed to request HC IRQ %d: %d\n", |
| 496 | irq, ret); |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 497 | goto err; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | platform_set_drvdata(pdev, dcdc); |
| 501 | |
| 502 | return 0; |
| 503 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 504 | err: |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 505 | return ret; |
| 506 | } |
| 507 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 508 | static struct platform_driver wm831x_buckv_driver = { |
| 509 | .probe = wm831x_buckv_probe, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 510 | .driver = { |
| 511 | .name = "wm831x-buckv", |
| 512 | }, |
| 513 | }; |
| 514 | |
| 515 | /* |
| 516 | * BUCKP specifics |
| 517 | */ |
| 518 | |
Axel Lin | d580cb5 | 2012-06-13 20:27:58 +0800 | [diff] [blame] | 519 | static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev, int uV) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 520 | { |
| 521 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 522 | struct wm831x *wm831x = dcdc->wm831x; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 523 | u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL; |
Axel Lin | d580cb5 | 2012-06-13 20:27:58 +0800 | [diff] [blame] | 524 | int sel; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 525 | |
Axel Lin | d580cb5 | 2012-06-13 20:27:58 +0800 | [diff] [blame] | 526 | sel = regulator_map_voltage_linear(rdev, uV, uV); |
| 527 | if (sel < 0) |
| 528 | return sel; |
| 529 | |
| 530 | return wm831x_set_bits(wm831x, reg, WM831X_DC3_ON_VSEL_MASK, sel); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 531 | } |
| 532 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 533 | static const struct regulator_ops wm831x_buckp_ops = { |
Axel Lin | d580cb5 | 2012-06-13 20:27:58 +0800 | [diff] [blame] | 534 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
Mark Brown | 817436e | 2012-04-15 11:55:34 +0100 | [diff] [blame] | 535 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | c70ad9d | 2012-06-13 20:27:14 +0800 | [diff] [blame] | 536 | .list_voltage = regulator_list_voltage_linear, |
Axel Lin | d580cb5 | 2012-06-13 20:27:58 +0800 | [diff] [blame] | 537 | .map_voltage = regulator_map_voltage_linear, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 538 | .set_suspend_voltage = wm831x_buckp_set_suspend_voltage, |
| 539 | |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 540 | .is_enabled = regulator_is_enabled_regmap, |
| 541 | .enable = regulator_enable_regmap, |
| 542 | .disable = regulator_disable_regmap, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 543 | .get_status = wm831x_dcdc_get_status, |
| 544 | .get_mode = wm831x_dcdc_get_mode, |
| 545 | .set_mode = wm831x_dcdc_set_mode, |
| 546 | .set_suspend_mode = wm831x_dcdc_set_suspend_mode, |
| 547 | }; |
| 548 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 549 | static int wm831x_buckp_probe(struct platform_device *pdev) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 550 | { |
| 551 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 552 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 553 | struct regulator_config config = { }; |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 554 | int id; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 555 | struct wm831x_dcdc *dcdc; |
| 556 | struct resource *res; |
| 557 | int ret, irq; |
| 558 | |
Mark Brown | 137a635 | 2011-07-25 22:20:29 +0100 | [diff] [blame] | 559 | if (pdata && pdata->wm831x_num) |
| 560 | id = (pdata->wm831x_num * 10) + 1; |
| 561 | else |
| 562 | id = 0; |
| 563 | id = pdev->id - id; |
| 564 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 565 | dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1); |
| 566 | |
Mark Brown | fded2f4 | 2011-12-15 02:11:14 +0800 | [diff] [blame] | 567 | dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), |
| 568 | GFP_KERNEL); |
Sachin Kamat | 5730aa5 | 2014-02-20 14:23:20 +0530 | [diff] [blame] | 569 | if (!dcdc) |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 570 | return -ENOMEM; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 571 | |
| 572 | dcdc->wm831x = wm831x; |
| 573 | |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 574 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 575 | if (res == NULL) { |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 576 | dev_err(&pdev->dev, "No REG resource\n"); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 577 | ret = -EINVAL; |
| 578 | goto err; |
| 579 | } |
| 580 | dcdc->base = res->start; |
| 581 | |
| 582 | snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1); |
| 583 | dcdc->desc.name = dcdc->name; |
Mark Brown | 82caa97 | 2012-03-28 21:40:42 +0100 | [diff] [blame] | 584 | |
| 585 | snprintf(dcdc->supply_name, sizeof(dcdc->supply_name), |
| 586 | "DC%dVDD", id + 1); |
| 587 | dcdc->desc.supply_name = dcdc->supply_name; |
| 588 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 589 | dcdc->desc.id = id; |
| 590 | dcdc->desc.type = REGULATOR_VOLTAGE; |
| 591 | dcdc->desc.n_voltages = WM831X_BUCKP_MAX_SELECTOR + 1; |
| 592 | dcdc->desc.ops = &wm831x_buckp_ops; |
| 593 | dcdc->desc.owner = THIS_MODULE; |
Mark Brown | 817436e | 2012-04-15 11:55:34 +0100 | [diff] [blame] | 594 | dcdc->desc.vsel_reg = dcdc->base + WM831X_DCDC_ON_CONFIG; |
| 595 | dcdc->desc.vsel_mask = WM831X_DC3_ON_VSEL_MASK; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 596 | dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; |
| 597 | dcdc->desc.enable_mask = 1 << id; |
Axel Lin | c70ad9d | 2012-06-13 20:27:14 +0800 | [diff] [blame] | 598 | dcdc->desc.min_uV = 850000; |
| 599 | dcdc->desc.uV_step = 25000; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 600 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 601 | config.dev = pdev->dev.parent; |
Mark Brown | b7ca878 | 2012-05-10 00:41:02 +0100 | [diff] [blame] | 602 | if (pdata) |
| 603 | config.init_data = pdata->dcdc[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 604 | config.driver_data = dcdc; |
Mark Brown | 817436e | 2012-04-15 11:55:34 +0100 | [diff] [blame] | 605 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 606 | |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 607 | dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, |
| 608 | &config); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 609 | if (IS_ERR(dcdc->regulator)) { |
| 610 | ret = PTR_ERR(dcdc->regulator); |
| 611 | dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", |
| 612 | id + 1, ret); |
| 613 | goto err; |
| 614 | } |
| 615 | |
Mark Brown | cd99758 | 2012-05-14 23:14:24 +0200 | [diff] [blame] | 616 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
Mark Brown | b0c4c0c | 2013-08-31 11:47:39 +0100 | [diff] [blame] | 617 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 618 | wm831x_dcdc_uv_irq, |
Fabio Estevam | 2945473 | 2015-06-01 22:33:53 -0300 | [diff] [blame] | 619 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 620 | dcdc->name, dcdc); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 621 | if (ret != 0) { |
| 622 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", |
| 623 | irq, ret); |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 624 | goto err; |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | platform_set_drvdata(pdev, dcdc); |
| 628 | |
| 629 | return 0; |
| 630 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 631 | err: |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 632 | return ret; |
| 633 | } |
| 634 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 635 | static struct platform_driver wm831x_buckp_driver = { |
| 636 | .probe = wm831x_buckp_probe, |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 637 | .driver = { |
| 638 | .name = "wm831x-buckp", |
| 639 | }, |
| 640 | }; |
| 641 | |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 642 | /* |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 643 | * DCDC boost convertors |
| 644 | */ |
| 645 | |
| 646 | static int wm831x_boostp_get_status(struct regulator_dev *rdev) |
| 647 | { |
| 648 | struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); |
| 649 | struct wm831x *wm831x = dcdc->wm831x; |
| 650 | int ret; |
| 651 | |
| 652 | /* First, check for errors */ |
| 653 | ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS); |
| 654 | if (ret < 0) |
| 655 | return ret; |
| 656 | |
| 657 | if (ret & (1 << rdev_get_id(rdev))) { |
| 658 | dev_dbg(wm831x->dev, "DCDC%d under voltage\n", |
| 659 | rdev_get_id(rdev) + 1); |
| 660 | return REGULATOR_STATUS_ERROR; |
| 661 | } |
| 662 | |
| 663 | /* Is the regulator on? */ |
| 664 | ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS); |
| 665 | if (ret < 0) |
| 666 | return ret; |
| 667 | if (ret & (1 << rdev_get_id(rdev))) |
| 668 | return REGULATOR_STATUS_ON; |
| 669 | else |
| 670 | return REGULATOR_STATUS_OFF; |
| 671 | } |
| 672 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 673 | static const struct regulator_ops wm831x_boostp_ops = { |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 674 | .get_status = wm831x_boostp_get_status, |
| 675 | |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 676 | .is_enabled = regulator_is_enabled_regmap, |
| 677 | .enable = regulator_enable_regmap, |
| 678 | .disable = regulator_disable_regmap, |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 679 | }; |
| 680 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 681 | static int wm831x_boostp_probe(struct platform_device *pdev) |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 682 | { |
| 683 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 684 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 685 | struct regulator_config config = { }; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 686 | int id = pdev->id % ARRAY_SIZE(pdata->dcdc); |
| 687 | struct wm831x_dcdc *dcdc; |
| 688 | struct resource *res; |
| 689 | int ret, irq; |
| 690 | |
| 691 | dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1); |
| 692 | |
| 693 | if (pdata == NULL || pdata->dcdc[id] == NULL) |
| 694 | return -ENODEV; |
| 695 | |
Axel Lin | 4c60165d | 2012-03-23 17:00:01 +0800 | [diff] [blame] | 696 | dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL); |
Sachin Kamat | 5730aa5 | 2014-02-20 14:23:20 +0530 | [diff] [blame] | 697 | if (!dcdc) |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 698 | return -ENOMEM; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 699 | |
| 700 | dcdc->wm831x = wm831x; |
| 701 | |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 702 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 703 | if (res == NULL) { |
Mark Brown | 5656098 | 2012-08-07 19:42:47 +0100 | [diff] [blame] | 704 | dev_err(&pdev->dev, "No REG resource\n"); |
Fabio Estevam | 477b2ba | 2013-12-30 18:03:24 -0200 | [diff] [blame] | 705 | return -EINVAL; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 706 | } |
| 707 | dcdc->base = res->start; |
| 708 | |
| 709 | snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1); |
| 710 | dcdc->desc.name = dcdc->name; |
| 711 | dcdc->desc.id = id; |
| 712 | dcdc->desc.type = REGULATOR_VOLTAGE; |
| 713 | dcdc->desc.ops = &wm831x_boostp_ops; |
| 714 | dcdc->desc.owner = THIS_MODULE; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 715 | dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; |
| 716 | dcdc->desc.enable_mask = 1 << id; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 717 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 718 | config.dev = pdev->dev.parent; |
Mark Brown | f0b067d | 2012-05-14 11:37:09 +0100 | [diff] [blame] | 719 | if (pdata) |
| 720 | config.init_data = pdata->dcdc[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 721 | config.driver_data = dcdc; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 722 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 723 | |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 724 | dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, |
| 725 | &config); |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 726 | if (IS_ERR(dcdc->regulator)) { |
| 727 | ret = PTR_ERR(dcdc->regulator); |
| 728 | dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", |
| 729 | id + 1, ret); |
Fabio Estevam | 477b2ba | 2013-12-30 18:03:24 -0200 | [diff] [blame] | 730 | return ret; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 731 | } |
| 732 | |
Mark Brown | cd99758 | 2012-05-14 23:14:24 +0200 | [diff] [blame] | 733 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
Mark Brown | b0c4c0c | 2013-08-31 11:47:39 +0100 | [diff] [blame] | 734 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
| 735 | wm831x_dcdc_uv_irq, |
Fabio Estevam | 2945473 | 2015-06-01 22:33:53 -0300 | [diff] [blame] | 736 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 737 | dcdc->name, |
Mark Brown | b0c4c0c | 2013-08-31 11:47:39 +0100 | [diff] [blame] | 738 | dcdc); |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 739 | if (ret != 0) { |
| 740 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", |
| 741 | irq, ret); |
Fabio Estevam | 477b2ba | 2013-12-30 18:03:24 -0200 | [diff] [blame] | 742 | return ret; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | platform_set_drvdata(pdev, dcdc); |
| 746 | |
| 747 | return 0; |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 748 | } |
| 749 | |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 750 | static struct platform_driver wm831x_boostp_driver = { |
| 751 | .probe = wm831x_boostp_probe, |
Mark Brown | 1304850 | 2009-07-28 15:23:16 +0100 | [diff] [blame] | 752 | .driver = { |
| 753 | .name = "wm831x-boostp", |
| 754 | }, |
| 755 | }; |
| 756 | |
| 757 | /* |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 758 | * External Power Enable |
| 759 | * |
| 760 | * These aren't actually DCDCs but look like them in hardware so share |
| 761 | * code. |
| 762 | */ |
| 763 | |
| 764 | #define WM831X_EPE_BASE 6 |
| 765 | |
Julia Lawall | b0d6dd3 | 2015-12-19 16:31:24 +0100 | [diff] [blame] | 766 | static const struct regulator_ops wm831x_epe_ops = { |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 767 | .is_enabled = regulator_is_enabled_regmap, |
| 768 | .enable = regulator_enable_regmap, |
| 769 | .disable = regulator_disable_regmap, |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 770 | .get_status = wm831x_dcdc_get_status, |
| 771 | }; |
| 772 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 773 | static int wm831x_epe_probe(struct platform_device *pdev) |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 774 | { |
| 775 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); |
Jingoo Han | dff91d0 | 2013-07-30 17:20:47 +0900 | [diff] [blame] | 776 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 777 | struct regulator_config config = { }; |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 778 | int id = pdev->id % ARRAY_SIZE(pdata->epe); |
| 779 | struct wm831x_dcdc *dcdc; |
| 780 | int ret; |
| 781 | |
| 782 | dev_dbg(&pdev->dev, "Probing EPE%d\n", id + 1); |
| 783 | |
Axel Lin | 4c60165d | 2012-03-23 17:00:01 +0800 | [diff] [blame] | 784 | dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL); |
Sachin Kamat | 5730aa5 | 2014-02-20 14:23:20 +0530 | [diff] [blame] | 785 | if (!dcdc) |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 786 | return -ENOMEM; |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 787 | |
| 788 | dcdc->wm831x = wm831x; |
| 789 | |
| 790 | /* For current parts this is correct; probably need to revisit |
| 791 | * in future. |
| 792 | */ |
| 793 | snprintf(dcdc->name, sizeof(dcdc->name), "EPE%d", id + 1); |
| 794 | dcdc->desc.name = dcdc->name; |
| 795 | dcdc->desc.id = id + WM831X_EPE_BASE; /* Offset in DCDC registers */ |
| 796 | dcdc->desc.ops = &wm831x_epe_ops; |
| 797 | dcdc->desc.type = REGULATOR_VOLTAGE; |
| 798 | dcdc->desc.owner = THIS_MODULE; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 799 | dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; |
| 800 | dcdc->desc.enable_mask = 1 << dcdc->desc.id; |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 801 | |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 802 | config.dev = pdev->dev.parent; |
Mark Brown | b7ca878 | 2012-05-10 00:41:02 +0100 | [diff] [blame] | 803 | if (pdata) |
| 804 | config.init_data = pdata->epe[id]; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 805 | config.driver_data = dcdc; |
Mark Brown | 3d138fc | 2012-04-15 12:38:42 +0100 | [diff] [blame] | 806 | config.regmap = wm831x->regmap; |
Mark Brown | c172708d | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 807 | |
Mark Brown | d73b4cb | 2013-08-31 11:58:40 +0100 | [diff] [blame] | 808 | dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, |
| 809 | &config); |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 810 | if (IS_ERR(dcdc->regulator)) { |
| 811 | ret = PTR_ERR(dcdc->regulator); |
| 812 | dev_err(wm831x->dev, "Failed to register EPE%d: %d\n", |
| 813 | id + 1, ret); |
| 814 | goto err; |
| 815 | } |
| 816 | |
| 817 | platform_set_drvdata(pdev, dcdc); |
| 818 | |
| 819 | return 0; |
| 820 | |
| 821 | err: |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 822 | return ret; |
| 823 | } |
| 824 | |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 825 | static struct platform_driver wm831x_epe_driver = { |
| 826 | .probe = wm831x_epe_probe, |
Mark Brown | 8267a9b | 2009-07-28 15:22:23 +0100 | [diff] [blame] | 827 | .driver = { |
| 828 | .name = "wm831x-epe", |
| 829 | }, |
| 830 | }; |
| 831 | |
Thierry Reding | 55e03e9c | 2015-12-02 17:32:52 +0100 | [diff] [blame] | 832 | static struct platform_driver * const drivers[] = { |
| 833 | &wm831x_buckv_driver, |
| 834 | &wm831x_buckp_driver, |
| 835 | &wm831x_boostp_driver, |
| 836 | &wm831x_epe_driver, |
| 837 | }; |
| 838 | |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 839 | static int __init wm831x_dcdc_init(void) |
| 840 | { |
Thierry Reding | 55e03e9c | 2015-12-02 17:32:52 +0100 | [diff] [blame] | 841 | return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 842 | } |
| 843 | subsys_initcall(wm831x_dcdc_init); |
| 844 | |
| 845 | static void __exit wm831x_dcdc_exit(void) |
| 846 | { |
Thierry Reding | 55e03e9c | 2015-12-02 17:32:52 +0100 | [diff] [blame] | 847 | platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); |
Mark Brown | e4ee831 | 2009-07-28 15:21:49 +0100 | [diff] [blame] | 848 | } |
| 849 | module_exit(wm831x_dcdc_exit); |
| 850 | |
| 851 | /* Module information */ |
| 852 | MODULE_AUTHOR("Mark Brown"); |
| 853 | MODULE_DESCRIPTION("WM831x DC-DC convertor driver"); |
| 854 | MODULE_LICENSE("GPL"); |
| 855 | MODULE_ALIAS("platform:wm831x-buckv"); |
| 856 | MODULE_ALIAS("platform:wm831x-buckp"); |
Axel Lin | 43f1f21 | 2012-11-30 20:39:53 +0800 | [diff] [blame] | 857 | MODULE_ALIAS("platform:wm831x-boostp"); |
Mark Brown | 24b4315 | 2011-07-25 22:20:31 +0100 | [diff] [blame] | 858 | MODULE_ALIAS("platform:wm831x-epe"); |