/* * wm8350.c -- Voltage and current regulation for the Wolfson WM8350 PMIC * * Copyright 2007, 2008 Wolfson Microelectronics PLC. * * Author: Liam Girdwood * linux@wolfsonmicro.com * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include /* Maximum value possible for VSEL */ #define WM8350_DCDC_MAX_VSEL 0x66 /* Microamps */ static const int isink_cur[] = { 4, 5, 6, 7, 8, 10, 11, 14, 16, 19, 23, 27, 32, 39, 46, 54, 65, 77, 92, 109, 130, 154, 183, 218, 259, 308, 367, 436, 518, 616, 733, 872, 1037, 1233, 1466, 1744, 2073, 2466, 2933, 3487, 4147, 4932, 5865, 6975, 8294, 9864, 11730, 13949, 16589, 19728, 23460, 27899, 33178, 39455, 46920, 55798, 66355, 78910, 93840, 111596, 132710, 157820, 187681, 223191 }; static int get_isink_val(int min_uA, int max_uA, u16 *setting) { int i; for (i = 0; i < ARRAY_SIZE(isink_cur); i++) { if (min_uA <= isink_cur[i] && max_uA >= isink_cur[i]) { *setting = i; return 0; } } return -EINVAL; } static int wm8350_isink_set_current(struct regulator_dev *rdev, int min_uA, int max_uA) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int isink = rdev_get_id(rdev); u16 val, setting; int ret; ret = get_isink_val(min_uA, max_uA, &setting); if (ret != 0) return ret; switch (isink) { case WM8350_ISINK_A: val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) & ~WM8350_CS1_ISEL_MASK; wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_A, val | setting); break; case WM8350_ISINK_B: val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) & ~WM8350_CS1_ISEL_MASK; wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_B, val | setting); break; default: return -EINVAL; } return 0; } static int wm8350_isink_get_current(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int isink = rdev_get_id(rdev); u16 val; switch (isink) { case WM8350_ISINK_A: val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) & WM8350_CS1_ISEL_MASK; break; case WM8350_ISINK_B: val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) & WM8350_CS1_ISEL_MASK; break; default: return 0; } return isink_cur[val]; } /* turn on ISINK followed by DCDC */ static int wm8350_isink_enable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int isink = rdev_get_id(rdev); switch (isink) { case WM8350_ISINK_A: switch (wm8350->pmic.isink_A_dcdc) { case WM8350_DCDC_2: case WM8350_DCDC_5: wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7, WM8350_CS1_ENA); wm8350_set_bits(wm8350, WM8350_CSA_FLASH_CONTROL, WM8350_CS1_DRIVE); wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << (wm8350->pmic.isink_A_dcdc - WM8350_DCDC_1)); break; default: return -EINVAL; } break; case WM8350_ISINK_B: switch (wm8350->pmic.isink_B_dcdc) { case WM8350_DCDC_2: case WM8350_DCDC_5: wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7, WM8350_CS2_ENA); wm8350_set_bits(wm8350, WM8350_CSB_FLASH_CONTROL, WM8350_CS2_DRIVE); wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << (wm8350->pmic.isink_B_dcdc - WM8350_DCDC_1)); break; default: return -EINVAL; } break; default: return -EINVAL; } return 0; } static int wm8350_isink_disable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int isink = rdev_get_id(rdev); switch (isink) { case WM8350_ISINK_A: switch (wm8350->pmic.isink_A_dcdc) { case WM8350_DCDC_2: case WM8350_DCDC_5: wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << (wm8350->pmic.isink_A_dcdc - WM8350_DCDC_1)); wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7, WM8350_CS1_ENA); break; default: return -EINVAL; } break; case WM8350_ISINK_B: switch (wm8350->pmic.isink_B_dcdc) { case WM8350_DCDC_2: case WM8350_DCDC_5: wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << (wm8350->pmic.isink_B_dcdc - WM8350_DCDC_1)); wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7, WM8350_CS2_ENA); break; default: return -EINVAL; } break; default: return -EINVAL; } return 0; } static int wm8350_isink_is_enabled(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int isink = rdev_get_id(rdev); switch (isink) { case WM8350_ISINK_A: return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) & 0x8000; case WM8350_ISINK_B: return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) & 0x8000; } return -EINVAL; } static int wm8350_isink_enable_time(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int isink = rdev_get_id(rdev); int reg; switch (isink) { case WM8350_ISINK_A: reg = wm8350_reg_read(wm8350, WM8350_CSA_FLASH_CONTROL); break; case WM8350_ISINK_B: reg = wm8350_reg_read(wm8350, WM8350_CSB_FLASH_CONTROL); break; default: return -EINVAL; } if (reg & WM8350_CS1_FLASH_MODE) { switch (reg & WM8350_CS1_ON_RAMP_MASK) { case 0: return 0; case 1: return 1950; case 2: return 3910; case 3: return 7800; } } else { switch (reg & WM8350_CS1_ON_RAMP_MASK) { case 0: return 0; case 1: return 250000; case 2: return 500000; case 3: return 1000000; } } return -EINVAL; } int wm8350_isink_set_flash(struct wm8350 *wm8350, int isink, u16 mode, u16 trigger, u16 duration, u16 on_ramp, u16 off_ramp, u16 drive) { switch (isink) { case WM8350_ISINK_A: wm8350_reg_write(wm8350, WM8350_CSA_FLASH_CONTROL, (mode ? WM8350_CS1_FLASH_MODE : 0) | (trigger ? WM8350_CS1_TRIGSRC : 0) | duration | on_ramp | off_ramp | drive); break; case WM8350_ISINK_B: wm8350_reg_write(wm8350, WM8350_CSB_FLASH_CONTROL, (mode ? WM8350_CS2_FLASH_MODE : 0) | (trigger ? WM8350_CS2_TRIGSRC : 0) | duration | on_ramp | off_ramp | drive); break; default: return -EINVAL; } return 0; } EXPORT_SYMBOL_GPL(wm8350_isink_set_flash); static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int sel, volt_reg, dcdc = rdev_get_id(rdev); u16 val; dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, dcdc, uV / 1000); switch (dcdc) { case WM8350_DCDC_1: volt_reg = WM8350_DCDC1_LOW_POWER; break; case WM8350_DCDC_3: volt_reg = WM8350_DCDC3_LOW_POWER; break; case WM8350_DCDC_4: volt_reg = WM8350_DCDC4_LOW_POWER; break; case WM8350_DCDC_6: volt_reg = WM8350_DCDC6_LOW_POWER; break; case WM8350_DCDC_2: case WM8350_DCDC_5: default: return -EINVAL; } sel = regulator_map_voltage_linear(rdev, uV, uV); if (sel < 0) return -EINVAL; /* all DCDCs have same mV bits */ val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK; wm8350_reg_write(wm8350, volt_reg, val | sel); return 0; } static int wm8350_dcdc_set_suspend_enable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 val; switch (dcdc) { case WM8350_DCDC_1: val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER) & ~WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER, val | wm8350->pmic.dcdc1_hib_mode); break; case WM8350_DCDC_3: val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER) & ~WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER, val | wm8350->pmic.dcdc3_hib_mode); break; case WM8350_DCDC_4: val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER) & ~WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER, val | wm8350->pmic.dcdc4_hib_mode); break; case WM8350_DCDC_6: val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER) & ~WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER, val | wm8350->pmic.dcdc6_hib_mode); break; case WM8350_DCDC_2: case WM8350_DCDC_5: default: return -EINVAL; } return 0; } static int wm8350_dcdc_set_suspend_disable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 val; switch (dcdc) { case WM8350_DCDC_1: val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER); wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER, val | WM8350_DCDC_HIB_MODE_DIS); break; case WM8350_DCDC_3: val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER); wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER, val | WM8350_DCDC_HIB_MODE_DIS); break; case WM8350_DCDC_4: val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER); wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER, val | WM8350_DCDC_HIB_MODE_DIS); break; case WM8350_DCDC_6: val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER); wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER, val | WM8350_DCDC_HIB_MODE_DIS); break; case WM8350_DCDC_2: case WM8350_DCDC_5: default: return -EINVAL; } return 0; } static int wm8350_dcdc25_set_suspend_enable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 val; switch (dcdc) { case WM8350_DCDC_2: val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL) & ~WM8350_DC2_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val | (WM8350_DC2_HIB_MODE_ACTIVE << WM8350_DC2_HIB_MODE_SHIFT)); break; case WM8350_DCDC_5: val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL) & ~WM8350_DC5_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val | (WM8350_DC5_HIB_MODE_ACTIVE << WM8350_DC5_HIB_MODE_SHIFT)); break; default: return -EINVAL; } return 0; } static int wm8350_dcdc25_set_suspend_disable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 val; switch (dcdc) { case WM8350_DCDC_2: val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL) & ~WM8350_DC2_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val | (WM8350_DC2_HIB_MODE_DISABLE << WM8350_DC2_HIB_MODE_SHIFT)); break; case WM8350_DCDC_5: val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL) & ~WM8350_DC5_HIB_MODE_MASK; wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val | (WM8350_DC5_HIB_MODE_DISABLE << WM8350_DC5_HIB_MODE_SHIFT)); break; default: return -EINVAL; } return 0; } static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev, unsigned int mode) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 *hib_mode; switch (dcdc) { case WM8350_DCDC_1: hib_mode = &wm8350->pmic.dcdc1_hib_mode; break; case WM8350_DCDC_3: hib_mode = &wm8350->pmic.dcdc3_hib_mode; break; case WM8350_DCDC_4: hib_mode = &wm8350->pmic.dcdc4_hib_mode; break; case WM8350_DCDC_6: hib_mode = &wm8350->pmic.dcdc6_hib_mode; break; case WM8350_DCDC_2: case WM8350_DCDC_5: default: return -EINVAL; } switch (mode) { case REGULATOR_MODE_NORMAL: *hib_mode = WM8350_DCDC_HIB_MODE_IMAGE; break; case REGULATOR_MODE_IDLE: *hib_mode = WM8350_DCDC_HIB_MODE_STANDBY; break; case REGULATOR_MODE_STANDBY: *hib_mode = WM8350_DCDC_HIB_MODE_LDO_IM; break; default: return -EINVAL; } return 0; } static const struct regulator_linear_range wm8350_ldo_ranges[] = { { .min_uV = 900000, .max_uV = 1650000, .min_sel = 0, .max_sel = 15, .uV_step = 50000 }, { .min_uV = 1800000, .max_uV = 3300000, .min_sel = 16, .max_sel = 31, .uV_step = 100000 }, }; static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int sel, volt_reg, ldo = rdev_get_id(rdev); u16 val; dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, ldo, uV / 1000); switch (ldo) { case WM8350_LDO_1: volt_reg = WM8350_LDO1_LOW_POWER; break; case WM8350_LDO_2: volt_reg = WM8350_LDO2_LOW_POWER; break; case WM8350_LDO_3: volt_reg = WM8350_LDO3_LOW_POWER; break; case WM8350_LDO_4: volt_reg = WM8350_LDO4_LOW_POWER; break; default: return -EINVAL; } sel = regulator_map_voltage_linear_range(rdev, uV, uV); if (sel < 0) return -EINVAL; /* all LDOs have same mV bits */ val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK; wm8350_reg_write(wm8350, volt_reg, val | sel); return 0; } static int wm8350_ldo_set_suspend_enable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int volt_reg, ldo = rdev_get_id(rdev); u16 val; switch (ldo) { case WM8350_LDO_1: volt_reg = WM8350_LDO1_LOW_POWER; break; case WM8350_LDO_2: volt_reg = WM8350_LDO2_LOW_POWER; break; case WM8350_LDO_3: volt_reg = WM8350_LDO3_LOW_POWER; break; case WM8350_LDO_4: volt_reg = WM8350_LDO4_LOW_POWER; break; default: return -EINVAL; } /* all LDOs have same mV bits */ val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK; wm8350_reg_write(wm8350, volt_reg, val); return 0; } static int wm8350_ldo_set_suspend_disable(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int volt_reg, ldo = rdev_get_id(rdev); u16 val; switch (ldo) { case WM8350_LDO_1: volt_reg = WM8350_LDO1_LOW_POWER; break; case WM8350_LDO_2: volt_reg = WM8350_LDO2_LOW_POWER; break; case WM8350_LDO_3: volt_reg = WM8350_LDO3_LOW_POWER; break; case WM8350_LDO_4: volt_reg = WM8350_LDO4_LOW_POWER; break; default: return -EINVAL; } /* all LDOs have same mV bits */ val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK; wm8350_reg_write(wm8350, volt_reg, val | WM8350_LDO1_HIB_MODE_DIS); return 0; } int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start, u16 stop, u16 fault) { int slot_reg; u16 val; dev_dbg(wm8350->dev, "%s %d start %d stop %d\n", __func__, dcdc, start, stop); /* slot valid ? */ if (start > 15 || stop > 15) return -EINVAL; switch (dcdc) { case WM8350_DCDC_1: slot_reg = WM8350_DCDC1_TIMEOUTS; break; case WM8350_DCDC_2: slot_reg = WM8350_DCDC2_TIMEOUTS; break; case WM8350_DCDC_3: slot_reg = WM8350_DCDC3_TIMEOUTS; break; case WM8350_DCDC_4: slot_reg = WM8350_DCDC4_TIMEOUTS; break; case WM8350_DCDC_5: slot_reg = WM8350_DCDC5_TIMEOUTS; break; case WM8350_DCDC_6: slot_reg = WM8350_DCDC6_TIMEOUTS; break; default: return -EINVAL; } val = wm8350_reg_read(wm8350, slot_reg) & ~(WM8350_DC1_ENSLOT_MASK | WM8350_DC1_SDSLOT_MASK | WM8350_DC1_ERRACT_MASK); wm8350_reg_write(wm8350, slot_reg, val | (start << WM8350_DC1_ENSLOT_SHIFT) | (stop << WM8350_DC1_SDSLOT_SHIFT) | (fault << WM8350_DC1_ERRACT_SHIFT)); return 0; } EXPORT_SYMBOL_GPL(wm8350_dcdc_set_slot); int wm8350_ldo_set_slot(struct wm8350 *wm8350, int ldo, u16 start, u16 stop) { int slot_reg; u16 val; dev_dbg(wm8350->dev, "%s %d start %d stop %d\n", __func__, ldo, start, stop); /* slot valid ? */ if (start > 15 || stop > 15) return -EINVAL; switch (ldo) { case WM8350_LDO_1: slot_reg = WM8350_LDO1_TIMEOUTS; break; case WM8350_LDO_2: slot_reg = WM8350_LDO2_TIMEOUTS; break; case WM8350_LDO_3: slot_reg = WM8350_LDO3_TIMEOUTS; break; case WM8350_LDO_4: slot_reg = WM8350_LDO4_TIMEOUTS; break; default: return -EINVAL; } val = wm8350_reg_read(wm8350, slot_reg) & ~WM8350_LDO1_SDSLOT_MASK; wm8350_reg_write(wm8350, slot_reg, val | ((start << 10) | (stop << 6))); return 0; } EXPORT_SYMBOL_GPL(wm8350_ldo_set_slot); int wm8350_dcdc25_set_mode(struct wm8350 *wm8350, int dcdc, u16 mode, u16 ilim, u16 ramp, u16 feedback) { u16 val; dev_dbg(wm8350->dev, "%s %d mode: %s %s\n", __func__, dcdc, mode ? "normal" : "boost", ilim ? "low" : "normal"); switch (dcdc) { case WM8350_DCDC_2: val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL) & ~(WM8350_DC2_MODE_MASK | WM8350_DC2_ILIM_MASK | WM8350_DC2_RMP_MASK | WM8350_DC2_FBSRC_MASK); wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val | (mode << WM8350_DC2_MODE_SHIFT) | (ilim << WM8350_DC2_ILIM_SHIFT) | (ramp << WM8350_DC2_RMP_SHIFT) | (feedback << WM8350_DC2_FBSRC_SHIFT)); break; case WM8350_DCDC_5: val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL) & ~(WM8350_DC5_MODE_MASK | WM8350_DC5_ILIM_MASK | WM8350_DC5_RMP_MASK | WM8350_DC5_FBSRC_MASK); wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val | (mode << WM8350_DC5_MODE_SHIFT) | (ilim << WM8350_DC5_ILIM_SHIFT) | (ramp << WM8350_DC5_RMP_SHIFT) | (feedback << WM8350_DC5_FBSRC_SHIFT)); break; default: return -EINVAL; } return 0; } EXPORT_SYMBOL_GPL(wm8350_dcdc25_set_mode); static int force_continuous_enable(struct wm8350 *wm8350, int dcdc, int enable) { int reg = 0, ret; switch (dcdc) { case WM8350_DCDC_1: reg = WM8350_DCDC1_FORCE_PWM; break; case WM8350_DCDC_3: reg = WM8350_DCDC3_FORCE_PWM; break; case WM8350_DCDC_4: reg = WM8350_DCDC4_FORCE_PWM; break; case WM8350_DCDC_6: reg = WM8350_DCDC6_FORCE_PWM; break; default: return -EINVAL; } if (enable) ret = wm8350_set_bits(wm8350, reg, WM8350_DCDC1_FORCE_PWM_ENA); else ret = wm8350_clear_bits(wm8350, reg, WM8350_DCDC1_FORCE_PWM_ENA); return ret; } static int wm8350_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 val; if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6) return -EINVAL; if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5) return -EINVAL; val = 1 << (dcdc - WM8350_DCDC_1); switch (mode) { case REGULATOR_MODE_FAST: /* force continuous mode */ wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val); wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); force_continuous_enable(wm8350, dcdc, 1); break; case REGULATOR_MODE_NORMAL: /* active / pulse skipping */ wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val); wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); force_continuous_enable(wm8350, dcdc, 0); break; case REGULATOR_MODE_IDLE: /* standby mode */ force_continuous_enable(wm8350, dcdc, 0); wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); wm8350_clear_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val); break; case REGULATOR_MODE_STANDBY: /* LDO mode */ force_continuous_enable(wm8350, dcdc, 0); wm8350_set_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); break; } return 0; } static unsigned int wm8350_dcdc_get_mode(struct regulator_dev *rdev) { struct wm8350 *wm8350 = rdev_get_drvdata(rdev); int dcdc = rdev_get_id(rdev); u16 mask, sleep, active, force; int mode = REGULATOR_MODE_NORMAL; int reg; switch (dcdc) { case WM8350_DCDC_1: reg = WM8350_DCDC1_FORCE_PWM; break; case WM8350_DCDC_3: reg = WM8350_DCDC3_FORCE_PWM; break; case WM8350_DCDC_4: reg = WM8350_DCDC4_FORCE_PWM; break; case WM8350_DCDC_6: reg = WM8350_DCDC6_FORCE_PWM; break; default: return -EINVAL; } mask = 1 << (dcdc - WM8350_DCDC_1); active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask; force = wm8350_reg_read(wm8350, reg) & WM8350_DCDC1_FORCE_PWM_ENA; sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask; dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x", mask, active, sleep, force); if (active && !sleep) { if (force) mode = REGULATOR_MODE_FAST; else mode = REGULATOR_MODE_NORMAL; } else if (!active && !sleep) mode = REGULATOR_MODE_IDLE; else if (sleep) mode = REGULATOR_MODE_STANDBY; return mode; } static unsigned int wm8350_ldo_get_mode(struct regulator_dev *rdev) { return REGULATOR_MODE_NORMAL; } struct wm8350_dcdc_efficiency { int uA_load_min; int uA_load_max; unsigned int mode; }; static const struct wm8350_dcdc_efficiency dcdc1_6_efficiency[] = { {0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */ {10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */ {100000, 1000000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */ {-1, -1, REGULATOR_MODE_NORMAL}, }; static const struct wm8350_dcdc_efficiency dcdc3_4_efficiency[] = { {0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */ {10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */ {100000, 800000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */ {-1, -1, REGULATOR_MODE_NORMAL}, }; static unsigned int get_mode(int uA, const struct wm8350_dcdc_efficiency *eff) { int i = 0; while (eff[i].uA_load_min != -1) { if (uA >= eff[i].uA_load_min && uA <= eff[i].uA_load_max) return eff[i].mode; } return REGULATOR_MODE_NORMAL; } /* Query the regulator for it's most efficient mode @ uV,uA * WM8350 regulator efficiency is pretty similar over * different input and output uV. */ static unsigned int wm8350_dcdc_get_optimum_mode(struct regulator_dev *rdev, int input_uV, int output_uV, int output_uA) { int dcdc = rdev_get_id(rdev), mode; switch (dcdc) { case WM8350_DCDC_1: case WM8350_DCDC_6: mode = get_mode(output_uA, dcdc1_6_efficiency); break; case WM8350_DCDC_3: case WM8350_DCDC_4: mode = get_mode(output_uA, dcdc3_4_efficiency); break; default: mode = REGULATOR_MODE_NORMAL; break; } return mode; } static struct regulator_ops wm8350_dcdc_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, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_mode = wm8350_dcdc_get_mode, .set_mode = wm8350_dcdc_set_mode, .get_optimum_mode = wm8350_dcdc_get_optimum_mode, .set_suspend_voltage = wm8350_dcdc_set_suspend_voltage, .set_suspend_enable = wm8350_dcdc_set_suspend_enable, .set_suspend_disable = wm8350_dcdc_set_suspend_disable, .set_suspend_mode = wm8350_dcdc_set_suspend_mode, }; static struct regulator_ops wm8350_dcdc2_5_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .set_suspend_enable = wm8350_dcdc25_set_suspend_enable, .set_suspend_disable = wm8350_dcdc25_set_suspend_disable, }; static struct regulator_ops wm8350_ldo_ops = { .map_voltage = regulator_map_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear_range, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_mode = wm8350_ldo_get_mode, .set_suspend_voltage = wm8350_ldo_set_suspend_voltage, .set_suspend_enable = wm8350_ldo_set_suspend_enable, .set_suspend_disable = wm8350_ldo_set_suspend_disable, }; static struct regulator_ops wm8350_isink_ops = { .set_current_limit = wm8350_isink_set_current, .get_current_limit = wm8350_isink_get_current, .enable = wm8350_isink_enable, .disable = wm8350_isink_disable, .is_enabled = wm8350_isink_is_enabled, .enable_time = wm8350_isink_enable_time, }; static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = { { .name = "DCDC1", .id = WM8350_DCDC_1, .ops = &wm8350_dcdc_ops, .irq = WM8350_IRQ_UV_DC1, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_DCDC_MAX_VSEL + 1, .min_uV = 850000, .uV_step = 25000, .vsel_reg = WM8350_DCDC1_CONTROL, .vsel_mask = WM8350_DC1_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_DC1_ENA, .owner = THIS_MODULE, }, { .name = "DCDC2", .id = WM8350_DCDC_2, .ops = &wm8350_dcdc2_5_ops, .irq = WM8350_IRQ_UV_DC2, .type = REGULATOR_VOLTAGE, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_DC2_ENA, .owner = THIS_MODULE, }, { .name = "DCDC3", .id = WM8350_DCDC_3, .ops = &wm8350_dcdc_ops, .irq = WM8350_IRQ_UV_DC3, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_DCDC_MAX_VSEL + 1, .min_uV = 850000, .uV_step = 25000, .vsel_reg = WM8350_DCDC3_CONTROL, .vsel_mask = WM8350_DC3_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_DC3_ENA, .owner = THIS_MODULE, }, { .name = "DCDC4", .id = WM8350_DCDC_4, .ops = &wm8350_dcdc_ops, .irq = WM8350_IRQ_UV_DC4, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_DCDC_MAX_VSEL + 1, .min_uV = 850000, .uV_step = 25000, .vsel_reg = WM8350_DCDC4_CONTROL, .vsel_mask = WM8350_DC4_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_DC4_ENA, .owner = THIS_MODULE, }, { .name = "DCDC5", .id = WM8350_DCDC_5, .ops = &wm8350_dcdc2_5_ops, .irq = WM8350_IRQ_UV_DC5, .type = REGULATOR_VOLTAGE, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_DC5_ENA, .owner = THIS_MODULE, }, { .name = "DCDC6", .id = WM8350_DCDC_6, .ops = &wm8350_dcdc_ops, .irq = WM8350_IRQ_UV_DC6, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_DCDC_MAX_VSEL + 1, .min_uV = 850000, .uV_step = 25000, .vsel_reg = WM8350_DCDC6_CONTROL, .vsel_mask = WM8350_DC6_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_DC6_ENA, .owner = THIS_MODULE, }, { .name = "LDO1", .id = WM8350_LDO_1, .ops = &wm8350_ldo_ops, .irq = WM8350_IRQ_UV_LDO1, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO1_VSEL_MASK + 1, .linear_ranges = wm8350_ldo_ranges, .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO1_CONTROL, .vsel_mask = WM8350_LDO1_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_LDO1_ENA, .owner = THIS_MODULE, }, { .name = "LDO2", .id = WM8350_LDO_2, .ops = &wm8350_ldo_ops, .irq = WM8350_IRQ_UV_LDO2, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO2_VSEL_MASK + 1, .linear_ranges = wm8350_ldo_ranges, .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO2_CONTROL, .vsel_mask = WM8350_LDO2_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_LDO2_ENA, .owner = THIS_MODULE, }, { .name = "LDO3", .id = WM8350_LDO_3, .ops = &wm8350_ldo_ops, .irq = WM8350_IRQ_UV_LDO3, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO3_VSEL_MASK + 1, .linear_ranges = wm8350_ldo_ranges, .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO3_CONTROL, .vsel_mask = WM8350_LDO3_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_LDO3_ENA, .owner = THIS_MODULE, }, { .name = "LDO4", .id = WM8350_LDO_4, .ops = &wm8350_ldo_ops, .irq = WM8350_IRQ_UV_LDO4, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO4_VSEL_MASK + 1, .linear_ranges = wm8350_ldo_ranges, .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO4_CONTROL, .vsel_mask = WM8350_LDO4_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, .enable_mask = WM8350_LDO4_ENA, .owner = THIS_MODULE, }, { .name = "ISINKA", .id = WM8350_ISINK_A, .ops = &wm8350_isink_ops, .irq = WM8350_IRQ_CS1, .type = REGULATOR_CURRENT, .owner = THIS_MODULE, }, { .name = "ISINKB", .id = WM8350_ISINK_B, .ops = &wm8350_isink_ops, .irq = WM8350_IRQ_CS2, .type = REGULATOR_CURRENT, .owner = THIS_MODULE, }, }; static irqreturn_t pmic_uv_handler(int irq, void *data) { struct regulator_dev *rdev = (struct regulator_dev *)data; struct wm8350 *wm8350 = rdev_get_drvdata(rdev); mutex_lock(&rdev->mutex); if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2) regulator_notifier_call_chain(rdev, REGULATOR_EVENT_REGULATION_OUT, wm8350); else regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, wm8350); mutex_unlock(&rdev->mutex); return IRQ_HANDLED; } static int wm8350_regulator_probe(struct platform_device *pdev) { struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev); struct regulator_config config = { }; struct regulator_dev *rdev; int ret; u16 val; if (pdev->id < WM8350_DCDC_1 || pdev->id > WM8350_ISINK_B) return -ENODEV; /* do any regulatior specific init */ switch (pdev->id) { case WM8350_DCDC_1: val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER); wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; break; case WM8350_DCDC_3: val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER); wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; break; case WM8350_DCDC_4: val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER); wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; break; case WM8350_DCDC_6: val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER); wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; break; } config.dev = &pdev->dev; config.init_data = dev_get_platdata(&pdev->dev); config.driver_data = dev_get_drvdata(&pdev->dev); config.regmap = wm8350->regmap; /* register regulator */ rdev = devm_regulator_register(&pdev->dev, &wm8350_reg[pdev->id], &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s\n", wm8350_reg[pdev->id].name); return PTR_ERR(rdev); } /* register regulator IRQ */ ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq, pmic_uv_handler, 0, "UV", rdev); if (ret < 0) { dev_err(&pdev->dev, "failed to register regulator %s IRQ\n", wm8350_reg[pdev->id].name); return ret; } return 0; } static int wm8350_regulator_remove(struct platform_device *pdev) { struct regulator_dev *rdev = platform_get_drvdata(pdev); struct wm8350 *wm8350 = rdev_get_drvdata(rdev); wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq, rdev); return 0; } int wm8350_register_regulator(struct wm8350 *wm8350, int reg, struct regulator_init_data *initdata) { struct platform_device *pdev; int ret; if (reg < 0 || reg >= NUM_WM8350_REGULATORS) return -EINVAL; if (wm8350->pmic.pdev[reg]) return -EBUSY; if (reg >= WM8350_DCDC_1 && reg <= WM8350_DCDC_6 && reg > wm8350->pmic.max_dcdc) return -ENODEV; if (reg >= WM8350_ISINK_A && reg <= WM8350_ISINK_B && reg > wm8350->pmic.max_isink) return -ENODEV; pdev = platform_device_alloc("wm8350-regulator", reg); if (!pdev) return -ENOMEM; wm8350->pmic.pdev[reg] = pdev; initdata->driver_data = wm8350; pdev->dev.platform_data = initdata; pdev->dev.parent = wm8350->dev; platform_set_drvdata(pdev, wm8350); ret = platform_device_add(pdev); if (ret != 0) { dev_err(wm8350->dev, "Failed to register regulator %d: %d\n", reg, ret); platform_device_put(pdev); wm8350->pmic.pdev[reg] = NULL; } return ret; } EXPORT_SYMBOL_GPL(wm8350_register_regulator); /** * wm8350_register_led - Register a WM8350 LED output * * @param wm8350 The WM8350 device to configure. * @param lednum LED device index to create. * @param dcdc The DCDC to use for the LED. * @param isink The ISINK to use for the LED. * @param pdata Configuration for the LED. * * The WM8350 supports the use of an ISINK together with a DCDC to * provide a power-efficient LED driver. This function registers the * regulators and instantiates the platform device for a LED. The * operating modes for the LED regulators must be configured using * wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and * wm8350_dcdc_set_slot() prior to calling this function. */ int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink, struct wm8350_led_platform_data *pdata) { struct wm8350_led *led; struct platform_device *pdev; int ret; if (lednum >= ARRAY_SIZE(wm8350->pmic.led) || lednum < 0) { dev_err(wm8350->dev, "Invalid LED index %d\n", lednum); return -ENODEV; } led = &wm8350->pmic.led[lednum]; if (led->pdev) { dev_err(wm8350->dev, "LED %d already allocated\n", lednum); return -EINVAL; } pdev = platform_device_alloc("wm8350-led", lednum); if (pdev == NULL) { dev_err(wm8350->dev, "Failed to allocate LED %d\n", lednum); return -ENOMEM; } led->isink_consumer.dev_name = dev_name(&pdev->dev); led->isink_consumer.supply = "led_isink"; led->isink_init.num_consumer_supplies = 1; led->isink_init.consumer_supplies = &led->isink_consumer; led->isink_init.constraints.min_uA = 0; led->isink_init.constraints.max_uA = pdata->max_uA; led->isink_init.constraints.valid_ops_mask = REGULATOR_CHANGE_CURRENT | REGULATOR_CHANGE_STATUS; led->isink_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL; ret = wm8350_register_regulator(wm8350, isink, &led->isink_init); if (ret != 0) { platform_device_put(pdev); return ret; } led->dcdc_consumer.dev_name = dev_name(&pdev->dev); led->dcdc_consumer.supply = "led_vcc"; led->dcdc_init.num_consumer_supplies = 1; led->dcdc_init.consumer_supplies = &led->dcdc_consumer; led->dcdc_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL; led->dcdc_init.constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS; ret = wm8350_register_regulator(wm8350, dcdc, &led->dcdc_init); if (ret != 0) { platform_device_put(pdev); return ret; } switch (isink) { case WM8350_ISINK_A: wm8350->pmic.isink_A_dcdc = dcdc; break; case WM8350_ISINK_B: wm8350->pmic.isink_B_dcdc = dcdc; break; } pdev->dev.platform_data = pdata; pdev->dev.parent = wm8350->dev; ret = platform_device_add(pdev); if (ret != 0) { dev_err(wm8350->dev, "Failed to register LED %d: %d\n", lednum, ret); platform_device_put(pdev); return ret; } led->pdev = pdev; return 0; } EXPORT_SYMBOL_GPL(wm8350_register_led); static struct platform_driver wm8350_regulator_driver = { .probe = wm8350_regulator_probe, .remove = wm8350_regulator_remove, .driver = { .name = "wm8350-regulator", }, }; static int __init wm8350_regulator_init(void) { return platform_driver_register(&wm8350_regulator_driver); } subsys_initcall(wm8350_regulator_init); static void __exit wm8350_regulator_exit(void) { platform_driver_unregister(&wm8350_regulator_driver); } module_exit(wm8350_regulator_exit); /* Module information */ MODULE_AUTHOR("Liam Girdwood"); MODULE_DESCRIPTION("WM8350 voltage and current regulator driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:wm8350-regulator");