| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mark Brown | 3706 | 92.23% | 28 | 57.14% |
| Axel Lin | 177 | 4.41% | 10 | 20.41% |
| Thierry Reding | 32 | 0.80% | 1 | 2.04% |
| Linus Walleij | 31 | 0.77% | 1 | 2.04% |
| Steve Twiss | 28 | 0.70% | 1 | 2.04% |
| Fabio Estevam | 16 | 0.40% | 2 | 4.08% |
| Jingoo Han | 12 | 0.30% | 1 | 2.04% |
| Rajendra Nayak | 4 | 0.10% | 1 | 2.04% |
| Julia Lawall | 4 | 0.10% | 1 | 2.04% |
| Sachin Kamat | 4 | 0.10% | 1 | 2.04% |
| Tejun Heo | 3 | 0.07% | 1 | 2.04% |
| Matti Vaittinen | 1 | 0.02% | 1 | 2.04% |
| Total | 4018 | 49 |
// SPDX-License-Identifier: GPL-2.0+ // // wm831x-dcdc.c -- DC-DC buck converter driver for the WM831x series // // Copyright 2009 Wolfson Microelectronics PLC. // // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/bitops.h> #include <linux/err.h> #include <linux/i2c.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/gpio/consumer.h> #include <linux/slab.h> #include <linux/mfd/wm831x/core.h> #include <linux/mfd/wm831x/regulator.h> #include <linux/mfd/wm831x/pdata.h> #define WM831X_BUCKV_MAX_SELECTOR 0x68 #define WM831X_BUCKP_MAX_SELECTOR 0x66 #define WM831X_DCDC_MODE_FAST 0 #define WM831X_DCDC_MODE_NORMAL 1 #define WM831X_DCDC_MODE_IDLE 2 #define WM831X_DCDC_MODE_STANDBY 3 #define WM831X_DCDC_MAX_NAME 9 /* Register offsets in control block */ #define WM831X_DCDC_CONTROL_1 0 #define WM831X_DCDC_CONTROL_2 1 #define WM831X_DCDC_ON_CONFIG 2 #define WM831X_DCDC_SLEEP_CONTROL 3 #define WM831X_DCDC_DVS_CONTROL 4 /* * Shared */ struct wm831x_dcdc { char name[WM831X_DCDC_MAX_NAME]; char supply_name[WM831X_DCDC_MAX_NAME]; struct regulator_desc desc; int base; struct wm831x *wm831x; struct regulator_dev *regulator; struct gpio_desc *dvs_gpiod; int dvs_gpio_state; int on_vsel; int dvs_vsel; }; static unsigned int wm831x_dcdc_get_mode(struct regulator_dev *rdev) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG; int val; val = wm831x_reg_read(wm831x, reg); if (val < 0) return val; val = (val & WM831X_DC1_ON_MODE_MASK) >> WM831X_DC1_ON_MODE_SHIFT; switch (val) { case WM831X_DCDC_MODE_FAST: return REGULATOR_MODE_FAST; case WM831X_DCDC_MODE_NORMAL: return REGULATOR_MODE_NORMAL; case WM831X_DCDC_MODE_STANDBY: return REGULATOR_MODE_STANDBY; case WM831X_DCDC_MODE_IDLE: return REGULATOR_MODE_IDLE; default: BUG(); return -EINVAL; } } static int wm831x_dcdc_set_mode_int(struct wm831x *wm831x, int reg, unsigned int mode) { int val; switch (mode) { case REGULATOR_MODE_FAST: val = WM831X_DCDC_MODE_FAST; break; case REGULATOR_MODE_NORMAL: val = WM831X_DCDC_MODE_NORMAL; break; case REGULATOR_MODE_STANDBY: val = WM831X_DCDC_MODE_STANDBY; break; case REGULATOR_MODE_IDLE: val = WM831X_DCDC_MODE_IDLE; break; default: return -EINVAL; } return wm831x_set_bits(wm831x, reg, WM831X_DC1_ON_MODE_MASK, val << WM831X_DC1_ON_MODE_SHIFT); } static int wm831x_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG; return wm831x_dcdc_set_mode_int(wm831x, reg, mode); } static int wm831x_dcdc_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL; return wm831x_dcdc_set_mode_int(wm831x, reg, mode); } static int wm831x_dcdc_get_status(struct regulator_dev *rdev) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; int ret; /* First, check for errors */ ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS); if (ret < 0) return ret; if (ret & (1 << rdev_get_id(rdev))) { dev_dbg(wm831x->dev, "DCDC%d under voltage\n", rdev_get_id(rdev) + 1); return REGULATOR_STATUS_ERROR; } /* DCDC1 and DCDC2 can additionally detect high voltage/current */ if (rdev_get_id(rdev) < 2) { if (ret & (WM831X_DC1_OV_STS << rdev_get_id(rdev))) { dev_dbg(wm831x->dev, "DCDC%d over voltage\n", rdev_get_id(rdev) + 1); return REGULATOR_STATUS_ERROR; } if (ret & (WM831X_DC1_HC_STS << rdev_get_id(rdev))) { dev_dbg(wm831x->dev, "DCDC%d over current\n", rdev_get_id(rdev) + 1); return REGULATOR_STATUS_ERROR; } } /* Is the regulator on? */ ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS); if (ret < 0) return ret; if (!(ret & (1 << rdev_get_id(rdev)))) return REGULATOR_STATUS_OFF; /* TODO: When we handle hardware control modes so we can report the * current mode. */ return REGULATOR_STATUS_ON; } static irqreturn_t wm831x_dcdc_uv_irq(int irq, void *data) { struct wm831x_dcdc *dcdc = data; regulator_lock(dcdc->regulator); regulator_notifier_call_chain(dcdc->regulator, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); regulator_unlock(dcdc->regulator); return IRQ_HANDLED; } static irqreturn_t wm831x_dcdc_oc_irq(int irq, void *data) { struct wm831x_dcdc *dcdc = data; regulator_lock(dcdc->regulator); regulator_notifier_call_chain(dcdc->regulator, REGULATOR_EVENT_OVER_CURRENT, NULL); regulator_unlock(dcdc->regulator); return IRQ_HANDLED; } /* * BUCKV specifics */ static const struct linear_range wm831x_buckv_ranges[] = { REGULATOR_LINEAR_RANGE(600000, 0, 0x7, 0), REGULATOR_LINEAR_RANGE(600000, 0x8, 0x68, 12500), }; static int wm831x_buckv_set_dvs(struct regulator_dev *rdev, int state) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); if (state == dcdc->dvs_gpio_state) return 0; dcdc->dvs_gpio_state = state; gpiod_set_value(dcdc->dvs_gpiod, state); /* Should wait for DVS state change to be asserted if we have * a GPIO for it, for now assume the device is configured * for the fastest possible transition. */ return 0; } static int wm831x_buckv_set_voltage_sel(struct regulator_dev *rdev, unsigned vsel) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; int on_reg = dcdc->base + WM831X_DCDC_ON_CONFIG; int dvs_reg = dcdc->base + WM831X_DCDC_DVS_CONTROL; int ret; /* If this value is already set then do a GPIO update if we can */ if (dcdc->dvs_gpiod && dcdc->on_vsel == vsel) return wm831x_buckv_set_dvs(rdev, 0); if (dcdc->dvs_gpiod && dcdc->dvs_vsel == vsel) return wm831x_buckv_set_dvs(rdev, 1); /* Always set the ON status to the minimum voltage */ ret = wm831x_set_bits(wm831x, on_reg, WM831X_DC1_ON_VSEL_MASK, vsel); if (ret < 0) return ret; dcdc->on_vsel = vsel; if (!dcdc->dvs_gpiod) return ret; /* Kick the voltage transition now */ ret = wm831x_buckv_set_dvs(rdev, 0); if (ret < 0) return ret; /* * If this VSEL is higher than the last one we've seen then * remember it as the DVS VSEL. This is optimised for CPUfreq * usage where we want to get to the highest voltage very * quickly. */ if (vsel > dcdc->dvs_vsel) { ret = wm831x_set_bits(wm831x, dvs_reg, WM831X_DC1_DVS_VSEL_MASK, vsel); if (ret == 0) dcdc->dvs_vsel = vsel; else dev_warn(wm831x->dev, "Failed to set DCDC DVS VSEL: %d\n", ret); } return 0; } static int wm831x_buckv_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL; int vsel; vsel = regulator_map_voltage_linear_range(rdev, uV, uV); if (vsel < 0) return vsel; return wm831x_set_bits(wm831x, reg, WM831X_DC1_SLP_VSEL_MASK, vsel); } static int wm831x_buckv_get_voltage_sel(struct regulator_dev *rdev) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); if (dcdc->dvs_gpiod && dcdc->dvs_gpio_state) return dcdc->dvs_vsel; else return dcdc->on_vsel; } /* Current limit options */ static const unsigned int wm831x_dcdc_ilim[] = { 125000, 250000, 375000, 500000, 625000, 750000, 875000, 1000000 }; static const struct regulator_ops wm831x_buckv_ops = { .set_voltage_sel = wm831x_buckv_set_voltage_sel, .get_voltage_sel = wm831x_buckv_get_voltage_sel, .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .set_suspend_voltage = wm831x_buckv_set_suspend_voltage, .set_current_limit = regulator_set_current_limit_regmap, .get_current_limit = regulator_get_current_limit_regmap, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_status = wm831x_dcdc_get_status, .get_mode = wm831x_dcdc_get_mode, .set_mode = wm831x_dcdc_set_mode, .set_suspend_mode = wm831x_dcdc_set_suspend_mode, }; /* * Set up DVS control. We just log errors since we can still run * (with reduced performance) if we fail. */ static void wm831x_buckv_dvs_init(struct platform_device *pdev, struct wm831x_dcdc *dcdc, struct wm831x_buckv_pdata *pdata) { struct wm831x *wm831x = dcdc->wm831x; int ret; u16 ctrl; if (!pdata) return; /* gpiolib won't let us read the GPIO status so pick the higher * of the two existing voltages so we take it as platform data. */ dcdc->dvs_gpio_state = pdata->dvs_init_state; dcdc->dvs_gpiod = devm_gpiod_get(&pdev->dev, "dvs", dcdc->dvs_gpio_state ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW); if (IS_ERR(dcdc->dvs_gpiod)) { dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %ld\n", dcdc->name, PTR_ERR(dcdc->dvs_gpiod)); return; } switch (pdata->dvs_control_src) { case 1: ctrl = 2 << WM831X_DC1_DVS_SRC_SHIFT; break; case 2: ctrl = 3 << WM831X_DC1_DVS_SRC_SHIFT; break; default: dev_err(wm831x->dev, "Invalid DVS control source %d for %s\n", pdata->dvs_control_src, dcdc->name); return; } /* If DVS_VSEL is set to the minimum value then raise it to ON_VSEL * to make bootstrapping a bit smoother. */ if (!dcdc->dvs_vsel) { ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL, WM831X_DC1_DVS_VSEL_MASK, dcdc->on_vsel); if (ret == 0) dcdc->dvs_vsel = dcdc->on_vsel; else dev_warn(wm831x->dev, "Failed to set DVS_VSEL: %d\n", ret); } ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL, WM831X_DC1_DVS_SRC_MASK, ctrl); if (ret < 0) { dev_err(wm831x->dev, "Failed to set %s DVS source: %d\n", dcdc->name, ret); } } static int wm831x_buckv_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); struct regulator_config config = { }; int id; struct wm831x_dcdc *dcdc; struct resource *res; int ret, irq; if (pdata && pdata->wm831x_num) id = (pdata->wm831x_num * 10) + 1; else id = 0; id = pdev->id - id; dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1); dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL); if (!dcdc) return -ENOMEM; dcdc->wm831x = wm831x; res = platform_get_resource(pdev, IORESOURCE_REG, 0); if (res == NULL) { dev_err(&pdev->dev, "No REG resource\n"); ret = -EINVAL; goto err; } dcdc->base = res->start; snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1); dcdc->desc.name = dcdc->name; snprintf(dcdc->supply_name, sizeof(dcdc->supply_name), "DC%dVDD", id + 1); dcdc->desc.supply_name = dcdc->supply_name; dcdc->desc.id = id; dcdc->desc.type = REGULATOR_VOLTAGE; dcdc->desc.n_voltages = WM831X_BUCKV_MAX_SELECTOR + 1; dcdc->desc.linear_ranges = wm831x_buckv_ranges; dcdc->desc.n_linear_ranges = ARRAY_SIZE(wm831x_buckv_ranges); dcdc->desc.ops = &wm831x_buckv_ops; dcdc->desc.owner = THIS_MODULE; dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; dcdc->desc.enable_mask = 1 << id; dcdc->desc.csel_reg = dcdc->base + WM831X_DCDC_CONTROL_2; dcdc->desc.csel_mask = WM831X_DC1_HC_THR_MASK; dcdc->desc.n_current_limits = ARRAY_SIZE(wm831x_dcdc_ilim); dcdc->desc.curr_table = wm831x_dcdc_ilim; ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_ON_CONFIG); if (ret < 0) { dev_err(wm831x->dev, "Failed to read ON VSEL: %d\n", ret); goto err; } dcdc->on_vsel = ret & WM831X_DC1_ON_VSEL_MASK; ret = wm831x_reg_read(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL); if (ret < 0) { dev_err(wm831x->dev, "Failed to read DVS VSEL: %d\n", ret); goto err; } dcdc->dvs_vsel = ret & WM831X_DC1_DVS_VSEL_MASK; if (pdata && pdata->dcdc[id]) wm831x_buckv_dvs_init(pdev, dcdc, pdata->dcdc[id]->driver_data); config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->dcdc[id]; config.driver_data = dcdc; config.regmap = wm831x->regmap; dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", id + 1, ret); goto err; } irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, wm831x_dcdc_uv_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT, dcdc->name, dcdc); if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); goto err; } irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC")); ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, wm831x_dcdc_oc_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT, dcdc->name, dcdc); if (ret != 0) { dev_err(&pdev->dev, "Failed to request HC IRQ %d: %d\n", irq, ret); goto err; } platform_set_drvdata(pdev, dcdc); return 0; err: return ret; } static struct platform_driver wm831x_buckv_driver = { .probe = wm831x_buckv_probe, .driver = { .name = "wm831x-buckv", }, }; /* * BUCKP specifics */ static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL; int sel; sel = regulator_map_voltage_linear(rdev, uV, uV); if (sel < 0) return sel; return wm831x_set_bits(wm831x, reg, WM831X_DC3_ON_VSEL_MASK, sel); } static const struct regulator_ops wm831x_buckp_ops = { .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .set_suspend_voltage = wm831x_buckp_set_suspend_voltage, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_status = wm831x_dcdc_get_status, .get_mode = wm831x_dcdc_get_mode, .set_mode = wm831x_dcdc_set_mode, .set_suspend_mode = wm831x_dcdc_set_suspend_mode, }; static int wm831x_buckp_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); struct regulator_config config = { }; int id; struct wm831x_dcdc *dcdc; struct resource *res; int ret, irq; if (pdata && pdata->wm831x_num) id = (pdata->wm831x_num * 10) + 1; else id = 0; id = pdev->id - id; dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1); dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL); if (!dcdc) return -ENOMEM; dcdc->wm831x = wm831x; res = platform_get_resource(pdev, IORESOURCE_REG, 0); if (res == NULL) { dev_err(&pdev->dev, "No REG resource\n"); ret = -EINVAL; goto err; } dcdc->base = res->start; snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1); dcdc->desc.name = dcdc->name; snprintf(dcdc->supply_name, sizeof(dcdc->supply_name), "DC%dVDD", id + 1); dcdc->desc.supply_name = dcdc->supply_name; dcdc->desc.id = id; dcdc->desc.type = REGULATOR_VOLTAGE; dcdc->desc.n_voltages = WM831X_BUCKP_MAX_SELECTOR + 1; dcdc->desc.ops = &wm831x_buckp_ops; dcdc->desc.owner = THIS_MODULE; dcdc->desc.vsel_reg = dcdc->base + WM831X_DCDC_ON_CONFIG; dcdc->desc.vsel_mask = WM831X_DC3_ON_VSEL_MASK; dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; dcdc->desc.enable_mask = 1 << id; dcdc->desc.min_uV = 850000; dcdc->desc.uV_step = 25000; config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->dcdc[id]; config.driver_data = dcdc; config.regmap = wm831x->regmap; dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", id + 1, ret); goto err; } irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, wm831x_dcdc_uv_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT, dcdc->name, dcdc); if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); goto err; } platform_set_drvdata(pdev, dcdc); return 0; err: return ret; } static struct platform_driver wm831x_buckp_driver = { .probe = wm831x_buckp_probe, .driver = { .name = "wm831x-buckp", }, }; /* * DCDC boost convertors */ static int wm831x_boostp_get_status(struct regulator_dev *rdev) { struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); struct wm831x *wm831x = dcdc->wm831x; int ret; /* First, check for errors */ ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS); if (ret < 0) return ret; if (ret & (1 << rdev_get_id(rdev))) { dev_dbg(wm831x->dev, "DCDC%d under voltage\n", rdev_get_id(rdev) + 1); return REGULATOR_STATUS_ERROR; } /* Is the regulator on? */ ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS); if (ret < 0) return ret; if (ret & (1 << rdev_get_id(rdev))) return REGULATOR_STATUS_ON; else return REGULATOR_STATUS_OFF; } static const struct regulator_ops wm831x_boostp_ops = { .get_status = wm831x_boostp_get_status, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, }; static int wm831x_boostp_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); struct regulator_config config = { }; int id = pdev->id % ARRAY_SIZE(pdata->dcdc); struct wm831x_dcdc *dcdc; struct resource *res; int ret, irq; dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1); if (pdata == NULL || pdata->dcdc[id] == NULL) return -ENODEV; dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL); if (!dcdc) return -ENOMEM; dcdc->wm831x = wm831x; res = platform_get_resource(pdev, IORESOURCE_REG, 0); if (res == NULL) { dev_err(&pdev->dev, "No REG resource\n"); return -EINVAL; } dcdc->base = res->start; snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1); dcdc->desc.name = dcdc->name; dcdc->desc.id = id; dcdc->desc.type = REGULATOR_VOLTAGE; dcdc->desc.ops = &wm831x_boostp_ops; dcdc->desc.owner = THIS_MODULE; dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; dcdc->desc.enable_mask = 1 << id; config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->dcdc[id]; config.driver_data = dcdc; config.regmap = wm831x->regmap; dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", id + 1, ret); return ret; } irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, wm831x_dcdc_uv_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT, dcdc->name, dcdc); if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); return ret; } platform_set_drvdata(pdev, dcdc); return 0; } static struct platform_driver wm831x_boostp_driver = { .probe = wm831x_boostp_probe, .driver = { .name = "wm831x-boostp", }, }; /* * External Power Enable * * These aren't actually DCDCs but look like them in hardware so share * code. */ #define WM831X_EPE_BASE 6 static const struct regulator_ops wm831x_epe_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_status = wm831x_dcdc_get_status, }; static int wm831x_epe_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); struct regulator_config config = { }; int id = pdev->id % ARRAY_SIZE(pdata->epe); struct wm831x_dcdc *dcdc; int ret; dev_dbg(&pdev->dev, "Probing EPE%d\n", id + 1); dcdc = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_dcdc), GFP_KERNEL); if (!dcdc) return -ENOMEM; dcdc->wm831x = wm831x; /* For current parts this is correct; probably need to revisit * in future. */ snprintf(dcdc->name, sizeof(dcdc->name), "EPE%d", id + 1); dcdc->desc.name = dcdc->name; dcdc->desc.id = id + WM831X_EPE_BASE; /* Offset in DCDC registers */ dcdc->desc.ops = &wm831x_epe_ops; dcdc->desc.type = REGULATOR_VOLTAGE; dcdc->desc.owner = THIS_MODULE; dcdc->desc.enable_reg = WM831X_DCDC_ENABLE; dcdc->desc.enable_mask = 1 << dcdc->desc.id; config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->epe[id]; config.driver_data = dcdc; config.regmap = wm831x->regmap; dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register EPE%d: %d\n", id + 1, ret); goto err; } platform_set_drvdata(pdev, dcdc); return 0; err: return ret; } static struct platform_driver wm831x_epe_driver = { .probe = wm831x_epe_probe, .driver = { .name = "wm831x-epe", }, }; static struct platform_driver * const drivers[] = { &wm831x_buckv_driver, &wm831x_buckp_driver, &wm831x_boostp_driver, &wm831x_epe_driver, }; static int __init wm831x_dcdc_init(void) { return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); } subsys_initcall(wm831x_dcdc_init); static void __exit wm831x_dcdc_exit(void) { platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); } module_exit(wm831x_dcdc_exit); /* Module information */ MODULE_AUTHOR("Mark Brown"); MODULE_DESCRIPTION("WM831x DC-DC convertor driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:wm831x-buckv"); MODULE_ALIAS("platform:wm831x-buckp"); MODULE_ALIAS("platform:wm831x-boostp"); MODULE_ALIAS("platform:wm831x-epe");
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