| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mark Brown | 3019 | 93.96% | 19 | 51.35% |
| Axel Lin | 121 | 3.77% | 7 | 18.92% |
| Thierry Reding | 29 | 0.90% | 1 | 2.70% |
| Doug Anderson | 15 | 0.47% | 1 | 2.70% |
| Jingoo Han | 9 | 0.28% | 1 | 2.70% |
| Fabio Estevam | 4 | 0.12% | 1 | 2.70% |
| Julia Lawall | 3 | 0.09% | 1 | 2.70% |
| Rajendra Nayak | 3 | 0.09% | 1 | 2.70% |
| Sachin Kamat | 3 | 0.09% | 1 | 2.70% |
| Matti Vaittinen | 2 | 0.06% | 1 | 2.70% |
| Linus Torvalds (pre-git) | 2 | 0.06% | 1 | 2.70% |
| Roel Kluin | 2 | 0.06% | 1 | 2.70% |
| Linus Torvalds | 1 | 0.03% | 1 | 2.70% |
| Total | 3213 | 37 |
// SPDX-License-Identifier: GPL-2.0+ // // wm831x-ldo.c -- LDO 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/slab.h> #include <linux/mfd/wm831x/core.h> #include <linux/mfd/wm831x/regulator.h> #include <linux/mfd/wm831x/pdata.h> #define WM831X_LDO_MAX_NAME 9 #define WM831X_LDO_CONTROL 0 #define WM831X_LDO_ON_CONTROL 1 #define WM831X_LDO_SLEEP_CONTROL 2 #define WM831X_ALIVE_LDO_ON_CONTROL 0 #define WM831X_ALIVE_LDO_SLEEP_CONTROL 1 struct wm831x_ldo { char name[WM831X_LDO_MAX_NAME]; char supply_name[WM831X_LDO_MAX_NAME]; struct regulator_desc desc; int base; struct wm831x *wm831x; struct regulator_dev *regulator; }; /* * Shared */ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) { struct wm831x_ldo *ldo = data; regulator_notifier_call_chain(ldo->regulator, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); return IRQ_HANDLED; } /* * General purpose LDOs */ static const struct linear_range wm831x_gp_ldo_ranges[] = { REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000), REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000), }; static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; sel = regulator_map_voltage_linear_range(rdev, uV, uV); if (sel < 0) return sel; return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel); } static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; int ret; ret = wm831x_reg_read(wm831x, on_reg); if (ret < 0) return ret; if (!(ret & WM831X_LDO1_ON_MODE)) return REGULATOR_MODE_NORMAL; ret = wm831x_reg_read(wm831x, ctrl_reg); if (ret < 0) return ret; if (ret & WM831X_LDO1_LP_MODE) return REGULATOR_MODE_STANDBY; else return REGULATOR_MODE_IDLE; } static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; int ret; switch (mode) { case REGULATOR_MODE_NORMAL: ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO1_ON_MODE, 0); if (ret < 0) return ret; break; case REGULATOR_MODE_IDLE: ret = wm831x_set_bits(wm831x, ctrl_reg, WM831X_LDO1_LP_MODE, 0); if (ret < 0) return ret; ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO1_ON_MODE, WM831X_LDO1_ON_MODE); if (ret < 0) return ret; break; case REGULATOR_MODE_STANDBY: ret = wm831x_set_bits(wm831x, ctrl_reg, WM831X_LDO1_LP_MODE, WM831X_LDO1_LP_MODE); if (ret < 0) return ret; ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO1_ON_MODE, WM831X_LDO1_ON_MODE); if (ret < 0) return ret; break; default: return -EINVAL; } return 0; } static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int mask = 1 << rdev_get_id(rdev); int ret; /* Is the regulator on? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); if (ret < 0) return ret; if (!(ret & mask)) return REGULATOR_STATUS_OFF; /* Is it reporting under voltage? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); if (ret < 0) return ret; if (ret & mask) return REGULATOR_STATUS_ERROR; ret = wm831x_gp_ldo_get_mode(rdev); if (ret < 0) return ret; else return regulator_mode_to_status(ret); } static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev, int input_uV, int output_uV, int load_uA) { if (load_uA < 20000) return REGULATOR_MODE_STANDBY; if (load_uA < 50000) return REGULATOR_MODE_IDLE; return REGULATOR_MODE_NORMAL; } static const struct regulator_ops wm831x_gp_ldo_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage, .get_mode = wm831x_gp_ldo_get_mode, .set_mode = wm831x_gp_ldo_set_mode, .get_status = wm831x_gp_ldo_get_status, .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode, .get_bypass = regulator_get_bypass_regmap, .set_bypass = regulator_set_bypass_regmap, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, }; static int wm831x_gp_ldo_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_ldo *ldo; 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 LDO%d\n", id + 1); ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); if (!ldo) return -ENOMEM; ldo->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; } ldo->base = res->start; snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); ldo->desc.name = ldo->name; snprintf(ldo->supply_name, sizeof(ldo->supply_name), "LDO%dVDD", id + 1); ldo->desc.supply_name = ldo->supply_name; ldo->desc.id = id; ldo->desc.type = REGULATOR_VOLTAGE; ldo->desc.n_voltages = 32; ldo->desc.ops = &wm831x_gp_ldo_ops; ldo->desc.owner = THIS_MODULE; ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK; ldo->desc.enable_reg = WM831X_LDO_ENABLE; ldo->desc.enable_mask = 1 << id; ldo->desc.bypass_reg = ldo->base; ldo->desc.bypass_mask = WM831X_LDO1_SWI; ldo->desc.linear_ranges = wm831x_gp_ldo_ranges; ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges); config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->ldo[id]; config.driver_data = ldo; config.regmap = wm831x->regmap; ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, &config); if (IS_ERR(ldo->regulator)) { ret = PTR_ERR(ldo->regulator); dev_err(wm831x->dev, "Failed to register LDO%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_ldo_uv_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT, ldo->name, ldo); if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); goto err; } platform_set_drvdata(pdev, ldo); return 0; err: return ret; } static struct platform_driver wm831x_gp_ldo_driver = { .probe = wm831x_gp_ldo_probe, .driver = { .name = "wm831x-ldo", .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, }; /* * Analogue LDOs */ static const struct linear_range wm831x_aldo_ranges[] = { REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000), REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000), }; static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; sel = regulator_map_voltage_linear_range(rdev, uV, uV); if (sel < 0) return sel; return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel); } static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; int ret; ret = wm831x_reg_read(wm831x, on_reg); if (ret < 0) return 0; if (ret & WM831X_LDO7_ON_MODE) return REGULATOR_MODE_IDLE; else return REGULATOR_MODE_NORMAL; } static int wm831x_aldo_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; int ret; switch (mode) { case REGULATOR_MODE_NORMAL: ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0); if (ret < 0) return ret; break; case REGULATOR_MODE_IDLE: ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, WM831X_LDO7_ON_MODE); if (ret < 0) return ret; break; default: return -EINVAL; } return 0; } static int wm831x_aldo_get_status(struct regulator_dev *rdev) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int mask = 1 << rdev_get_id(rdev); int ret; /* Is the regulator on? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); if (ret < 0) return ret; if (!(ret & mask)) return REGULATOR_STATUS_OFF; /* Is it reporting under voltage? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); if (ret < 0) return ret; if (ret & mask) return REGULATOR_STATUS_ERROR; ret = wm831x_aldo_get_mode(rdev); if (ret < 0) return ret; else return regulator_mode_to_status(ret); } static const struct regulator_ops wm831x_aldo_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_suspend_voltage = wm831x_aldo_set_suspend_voltage, .get_mode = wm831x_aldo_get_mode, .set_mode = wm831x_aldo_set_mode, .get_status = wm831x_aldo_get_status, .set_bypass = regulator_set_bypass_regmap, .get_bypass = regulator_get_bypass_regmap, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, }; static int wm831x_aldo_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_ldo *ldo; 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 LDO%d\n", id + 1); ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); if (!ldo) return -ENOMEM; ldo->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; } ldo->base = res->start; snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); ldo->desc.name = ldo->name; snprintf(ldo->supply_name, sizeof(ldo->supply_name), "LDO%dVDD", id + 1); ldo->desc.supply_name = ldo->supply_name; ldo->desc.id = id; ldo->desc.type = REGULATOR_VOLTAGE; ldo->desc.n_voltages = 32; ldo->desc.linear_ranges = wm831x_aldo_ranges; ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges); ldo->desc.ops = &wm831x_aldo_ops; ldo->desc.owner = THIS_MODULE; ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK; ldo->desc.enable_reg = WM831X_LDO_ENABLE; ldo->desc.enable_mask = 1 << id; ldo->desc.bypass_reg = ldo->base; ldo->desc.bypass_mask = WM831X_LDO7_SWI; config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->ldo[id]; config.driver_data = ldo; config.regmap = wm831x->regmap; ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, &config); if (IS_ERR(ldo->regulator)) { ret = PTR_ERR(ldo->regulator); dev_err(wm831x->dev, "Failed to register LDO%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_ldo_uv_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT, ldo->name, ldo); if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); goto err; } platform_set_drvdata(pdev, ldo); return 0; err: return ret; } static struct platform_driver wm831x_aldo_driver = { .probe = wm831x_aldo_probe, .driver = { .name = "wm831x-aldo", .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, }; /* * Alive LDO */ #define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL; sel = regulator_map_voltage_linear(rdev, uV, uV); if (sel < 0) return sel; return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel); } static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev) { struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); struct wm831x *wm831x = ldo->wm831x; int mask = 1 << rdev_get_id(rdev); int ret; /* Is the regulator on? */ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); if (ret < 0) return ret; if (ret & mask) return REGULATOR_STATUS_ON; else return REGULATOR_STATUS_OFF; } static const struct regulator_ops wm831x_alive_ldo_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage, .get_status = wm831x_alive_ldo_get_status, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, }; static int wm831x_alive_ldo_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_ldo *ldo; struct resource *res; int ret; if (pdata && pdata->wm831x_num) id = (pdata->wm831x_num * 10) + 1; else id = 0; id = pdev->id - id; dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); if (!ldo) return -ENOMEM; ldo->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; } ldo->base = res->start; snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); ldo->desc.name = ldo->name; snprintf(ldo->supply_name, sizeof(ldo->supply_name), "LDO%dVDD", id + 1); ldo->desc.supply_name = ldo->supply_name; ldo->desc.id = id; ldo->desc.type = REGULATOR_VOLTAGE; ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1; ldo->desc.ops = &wm831x_alive_ldo_ops; ldo->desc.owner = THIS_MODULE; ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL; ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK; ldo->desc.enable_reg = WM831X_LDO_ENABLE; ldo->desc.enable_mask = 1 << id; ldo->desc.min_uV = 800000; ldo->desc.uV_step = 50000; ldo->desc.enable_time = 1000; config.dev = pdev->dev.parent; if (pdata) config.init_data = pdata->ldo[id]; config.driver_data = ldo; config.regmap = wm831x->regmap; ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, &config); if (IS_ERR(ldo->regulator)) { ret = PTR_ERR(ldo->regulator); dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", id + 1, ret); goto err; } platform_set_drvdata(pdev, ldo); return 0; err: return ret; } static struct platform_driver wm831x_alive_ldo_driver = { .probe = wm831x_alive_ldo_probe, .driver = { .name = "wm831x-alive-ldo", .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, }; static struct platform_driver * const drivers[] = { &wm831x_gp_ldo_driver, &wm831x_aldo_driver, &wm831x_alive_ldo_driver, }; static int __init wm831x_ldo_init(void) { return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); } subsys_initcall(wm831x_ldo_init); static void __exit wm831x_ldo_exit(void) { platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); } module_exit(wm831x_ldo_exit); /* Module information */ MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); MODULE_DESCRIPTION("WM831x LDO driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:wm831x-ldo"); MODULE_ALIAS("platform:wm831x-aldo"); MODULE_ALIAS("platform:wm831x-aliveldo");
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