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682 lines
18 KiB
682 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* twl-regulator.c -- support regulators in twl4030/twl6030 family chips |
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* |
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* Copyright (C) 2008 David Brownell |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/platform_device.h> |
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/mfd/twl.h> |
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#include <linux/delay.h> |
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|
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/* |
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* The TWL4030/TW5030/TPS659x0 family chips include power management, a |
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* USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions |
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* include an audio codec, battery charger, and more voltage regulators. |
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* These chips are often used in OMAP-based systems. |
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* |
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* This driver implements software-based resource control for various |
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* voltage regulators. This is usually augmented with state machine |
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* based control. |
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*/ |
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struct twlreg_info { |
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/* start of regulator's PM_RECEIVER control register bank */ |
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u8 base; |
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/* twl resource ID, for resource control state machine */ |
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u8 id; |
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/* voltage in mV = table[VSEL]; table_len must be a power-of-two */ |
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u8 table_len; |
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const u16 *table; |
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/* State REMAP default configuration */ |
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u8 remap; |
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/* used by regulator core */ |
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struct regulator_desc desc; |
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|
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/* chip specific features */ |
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unsigned long features; |
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/* data passed from board for external get/set voltage */ |
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void *data; |
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}; |
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/* LDO control registers ... offset is from the base of its register bank. |
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* The first three registers of all power resource banks help hardware to |
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* manage the various resource groups. |
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*/ |
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/* Common offset in TWL4030/6030 */ |
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#define VREG_GRP 0 |
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/* TWL4030 register offsets */ |
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#define VREG_TYPE 1 |
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#define VREG_REMAP 2 |
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#define VREG_DEDICATED 3 /* LDO control */ |
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#define VREG_VOLTAGE_SMPS_4030 9 |
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/* TWL6030 register offsets */ |
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#define VREG_TRANS 1 |
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#define VREG_STATE 2 |
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#define VREG_VOLTAGE 3 |
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#define VREG_VOLTAGE_SMPS 4 |
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static inline int |
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twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset) |
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{ |
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u8 value; |
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int status; |
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status = twl_i2c_read_u8(slave_subgp, |
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&value, info->base + offset); |
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return (status < 0) ? status : value; |
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} |
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static inline int |
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twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset, |
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u8 value) |
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{ |
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return twl_i2c_write_u8(slave_subgp, |
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value, info->base + offset); |
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} |
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|
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/*----------------------------------------------------------------------*/ |
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|
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/* generic power resource operations, which work on all regulators */ |
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static int twlreg_grp(struct regulator_dev *rdev) |
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{ |
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return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER, |
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VREG_GRP); |
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} |
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/* |
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* Enable/disable regulators by joining/leaving the P1 (processor) group. |
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* We assume nobody else is updating the DEV_GRP registers. |
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*/ |
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/* definition for 4030 family */ |
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#define P3_GRP_4030 BIT(7) /* "peripherals" */ |
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#define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */ |
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#define P1_GRP_4030 BIT(5) /* CPU/Linux */ |
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/* definition for 6030 family */ |
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#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */ |
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#define P2_GRP_6030 BIT(1) /* "peripherals" */ |
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#define P1_GRP_6030 BIT(0) /* CPU/Linux */ |
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static int twl4030reg_is_enabled(struct regulator_dev *rdev) |
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{ |
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int state = twlreg_grp(rdev); |
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if (state < 0) |
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return state; |
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return state & P1_GRP_4030; |
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} |
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#define PB_I2C_BUSY BIT(0) |
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#define PB_I2C_BWEN BIT(1) |
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/* Wait until buffer empty/ready to send a word on power bus. */ |
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static int twl4030_wait_pb_ready(void) |
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{ |
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int ret; |
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int timeout = 10; |
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u8 val; |
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do { |
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ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val, |
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TWL4030_PM_MASTER_PB_CFG); |
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if (ret < 0) |
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return ret; |
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if (!(val & PB_I2C_BUSY)) |
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return 0; |
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mdelay(1); |
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timeout--; |
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} while (timeout); |
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return -ETIMEDOUT; |
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} |
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/* Send a word over the powerbus */ |
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static int twl4030_send_pb_msg(unsigned msg) |
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{ |
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u8 val; |
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int ret; |
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|
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/* save powerbus configuration */ |
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ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val, |
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TWL4030_PM_MASTER_PB_CFG); |
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if (ret < 0) |
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return ret; |
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/* Enable i2c access to powerbus */ |
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ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val | PB_I2C_BWEN, |
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TWL4030_PM_MASTER_PB_CFG); |
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if (ret < 0) |
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return ret; |
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ret = twl4030_wait_pb_ready(); |
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if (ret < 0) |
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return ret; |
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ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg >> 8, |
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TWL4030_PM_MASTER_PB_WORD_MSB); |
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if (ret < 0) |
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return ret; |
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ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg & 0xff, |
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TWL4030_PM_MASTER_PB_WORD_LSB); |
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if (ret < 0) |
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return ret; |
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ret = twl4030_wait_pb_ready(); |
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if (ret < 0) |
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return ret; |
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/* Restore powerbus configuration */ |
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return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val, |
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TWL4030_PM_MASTER_PB_CFG); |
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} |
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static int twl4030reg_enable(struct regulator_dev *rdev) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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int grp; |
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int ret; |
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grp = twlreg_grp(rdev); |
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if (grp < 0) |
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return grp; |
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grp |= P1_GRP_4030; |
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ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp); |
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return ret; |
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} |
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static int twl4030reg_disable(struct regulator_dev *rdev) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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int grp; |
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int ret; |
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grp = twlreg_grp(rdev); |
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if (grp < 0) |
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return grp; |
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grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030); |
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ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp); |
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return ret; |
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} |
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static int twl4030reg_get_status(struct regulator_dev *rdev) |
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{ |
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int state = twlreg_grp(rdev); |
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if (state < 0) |
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return state; |
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state &= 0x0f; |
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/* assume state != WARM_RESET; we'd not be running... */ |
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if (!state) |
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return REGULATOR_STATUS_OFF; |
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return (state & BIT(3)) |
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? REGULATOR_STATUS_NORMAL |
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: REGULATOR_STATUS_STANDBY; |
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} |
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static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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unsigned message; |
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/* We can only set the mode through state machine commands... */ |
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switch (mode) { |
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case REGULATOR_MODE_NORMAL: |
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message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE); |
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break; |
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case REGULATOR_MODE_STANDBY: |
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message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP); |
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break; |
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default: |
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return -EINVAL; |
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} |
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return twl4030_send_pb_msg(message); |
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} |
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static inline unsigned int twl4030reg_map_mode(unsigned int mode) |
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{ |
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switch (mode) { |
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case RES_STATE_ACTIVE: |
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return REGULATOR_MODE_NORMAL; |
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case RES_STATE_SLEEP: |
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return REGULATOR_MODE_STANDBY; |
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default: |
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return REGULATOR_MODE_INVALID; |
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} |
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} |
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/*----------------------------------------------------------------------*/ |
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/* |
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* Support for adjustable-voltage LDOs uses a four bit (or less) voltage |
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* select field in its control register. We use tables indexed by VSEL |
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* to record voltages in milliVolts. (Accuracy is about three percent.) |
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* |
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* Note that VSEL values for VAUX2 changed in twl5030 and newer silicon; |
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* currently handled by listing two slightly different VAUX2 regulators, |
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* only one of which will be configured. |
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* |
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* VSEL values documented as "TI cannot support these values" are flagged |
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* in these tables as UNSUP() values; we normally won't assign them. |
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* |
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* VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported. |
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* TI are revising the twl5030/tps659x0 specs to support that 3.0V setting. |
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*/ |
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#define UNSUP_MASK 0x8000 |
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#define UNSUP(x) (UNSUP_MASK | (x)) |
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#define IS_UNSUP(info, x) \ |
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((UNSUP_MASK & (x)) && \ |
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!((info)->features & TWL4030_ALLOW_UNSUPPORTED)) |
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#define LDO_MV(x) (~UNSUP_MASK & (x)) |
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static const u16 VAUX1_VSEL_table[] = { |
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UNSUP(1500), UNSUP(1800), 2500, 2800, |
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3000, 3000, 3000, 3000, |
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}; |
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static const u16 VAUX2_4030_VSEL_table[] = { |
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UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300, |
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1500, 1800, UNSUP(1850), 2500, |
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UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), |
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UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), |
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}; |
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static const u16 VAUX2_VSEL_table[] = { |
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1700, 1700, 1900, 1300, |
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1500, 1800, 2000, 2500, |
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2100, 2800, 2200, 2300, |
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2400, 2400, 2400, 2400, |
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}; |
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static const u16 VAUX3_VSEL_table[] = { |
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1500, 1800, 2500, 2800, |
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3000, 3000, 3000, 3000, |
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}; |
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static const u16 VAUX4_VSEL_table[] = { |
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700, 1000, 1200, UNSUP(1300), |
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1500, 1800, UNSUP(1850), 2500, |
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UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), |
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UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), |
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}; |
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static const u16 VMMC1_VSEL_table[] = { |
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1850, 2850, 3000, 3150, |
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}; |
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static const u16 VMMC2_VSEL_table[] = { |
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UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300), |
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UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500), |
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2600, 2800, 2850, 3000, |
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3150, 3150, 3150, 3150, |
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}; |
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static const u16 VPLL1_VSEL_table[] = { |
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1000, 1200, 1300, 1800, |
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UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000), |
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}; |
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static const u16 VPLL2_VSEL_table[] = { |
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700, 1000, 1200, 1300, |
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UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500), |
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UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000), |
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UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), |
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}; |
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static const u16 VSIM_VSEL_table[] = { |
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UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800, |
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2800, 3000, 3000, 3000, |
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}; |
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static const u16 VDAC_VSEL_table[] = { |
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1200, 1300, 1800, 1800, |
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}; |
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static const u16 VIO_VSEL_table[] = { |
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1800, 1850, |
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}; |
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static const u16 VINTANA2_VSEL_table[] = { |
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2500, 2750, |
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}; |
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/* 600mV to 1450mV in 12.5 mV steps */ |
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static const struct linear_range VDD1_ranges[] = { |
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REGULATOR_LINEAR_RANGE(600000, 0, 68, 12500) |
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}; |
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/* 600mV to 1450mV in 12.5 mV steps, everything above = 1500mV */ |
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static const struct linear_range VDD2_ranges[] = { |
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REGULATOR_LINEAR_RANGE(600000, 0, 68, 12500), |
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REGULATOR_LINEAR_RANGE(1500000, 69, 69, 12500) |
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}; |
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static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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int mV = info->table[index]; |
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return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000); |
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} |
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static int |
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twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, |
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selector); |
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} |
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static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); |
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if (vsel < 0) |
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return vsel; |
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vsel &= info->table_len - 1; |
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return vsel; |
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} |
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static const struct regulator_ops twl4030ldo_ops = { |
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.list_voltage = twl4030ldo_list_voltage, |
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.set_voltage_sel = twl4030ldo_set_voltage_sel, |
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.get_voltage_sel = twl4030ldo_get_voltage_sel, |
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.enable = twl4030reg_enable, |
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.disable = twl4030reg_disable, |
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.is_enabled = twl4030reg_is_enabled, |
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.set_mode = twl4030reg_set_mode, |
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.get_status = twl4030reg_get_status, |
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}; |
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static int |
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twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, |
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unsigned *selector) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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int vsel = DIV_ROUND_UP(min_uV - 600000, 12500); |
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twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS_4030, vsel); |
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return 0; |
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} |
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static int twl4030smps_get_voltage(struct regulator_dev *rdev) |
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{ |
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struct twlreg_info *info = rdev_get_drvdata(rdev); |
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int vsel; |
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vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, |
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VREG_VOLTAGE_SMPS_4030); |
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return vsel * 12500 + 600000; |
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} |
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static const struct regulator_ops twl4030smps_ops = { |
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.list_voltage = regulator_list_voltage_linear_range, |
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.set_voltage = twl4030smps_set_voltage, |
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.get_voltage = twl4030smps_get_voltage, |
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}; |
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/*----------------------------------------------------------------------*/ |
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static const struct regulator_ops twl4030fixed_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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.enable = twl4030reg_enable, |
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.disable = twl4030reg_disable, |
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.is_enabled = twl4030reg_is_enabled, |
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.set_mode = twl4030reg_set_mode, |
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.get_status = twl4030reg_get_status, |
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}; |
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/*----------------------------------------------------------------------*/ |
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#define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \ |
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static const struct twlreg_info TWL4030_INFO_##label = { \ |
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.base = offset, \ |
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.id = num, \ |
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.table_len = ARRAY_SIZE(label##_VSEL_table), \ |
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.table = label##_VSEL_table, \ |
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.remap = remap_conf, \ |
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.desc = { \ |
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.name = #label, \ |
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.id = TWL4030_REG_##label, \ |
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.n_voltages = ARRAY_SIZE(label##_VSEL_table), \ |
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.ops = &twl4030ldo_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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.enable_time = turnon_delay, \ |
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.of_map_mode = twl4030reg_map_mode, \ |
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}, \ |
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} |
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#define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf, \ |
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n_volt) \ |
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static const struct twlreg_info TWL4030_INFO_##label = { \ |
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.base = offset, \ |
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.id = num, \ |
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.remap = remap_conf, \ |
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.desc = { \ |
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.name = #label, \ |
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.id = TWL4030_REG_##label, \ |
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.ops = &twl4030smps_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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.enable_time = turnon_delay, \ |
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.of_map_mode = twl4030reg_map_mode, \ |
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.n_voltages = n_volt, \ |
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.n_linear_ranges = ARRAY_SIZE(label ## _ranges), \ |
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.linear_ranges = label ## _ranges, \ |
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}, \ |
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} |
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#define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \ |
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remap_conf) \ |
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static const struct twlreg_info TWLFIXED_INFO_##label = { \ |
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.base = offset, \ |
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.id = num, \ |
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.remap = remap_conf, \ |
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.desc = { \ |
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.name = #label, \ |
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.id = TWL4030##_REG_##label, \ |
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.n_voltages = 1, \ |
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.ops = &twl4030fixed_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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.min_uV = mVolts * 1000, \ |
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.enable_time = turnon_delay, \ |
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.of_map_mode = twl4030reg_map_mode, \ |
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}, \ |
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} |
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|
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/* |
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* We list regulators here if systems need some level of |
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* software control over them after boot. |
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*/ |
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TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00); |
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TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08); |
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TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00); |
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TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08); |
|
TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08); |
|
TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08); |
|
TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08, 68); |
|
TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08, 69); |
|
/* VUSBCP is managed *only* by the USB subchip */ |
|
TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08); |
|
TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08); |
|
TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08); |
|
TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08); |
|
TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08); |
|
|
|
#define TWL_OF_MATCH(comp, family, label) \ |
|
{ \ |
|
.compatible = comp, \ |
|
.data = &family##_INFO_##label, \ |
|
} |
|
|
|
#define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label) |
|
#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label) |
|
#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label) |
|
#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label) |
|
#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label) |
|
|
|
static const struct of_device_id twl_of_match[] = { |
|
TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1), |
|
TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030), |
|
TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2), |
|
TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3), |
|
TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4), |
|
TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1), |
|
TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2), |
|
TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1), |
|
TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2), |
|
TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM), |
|
TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC), |
|
TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2), |
|
TWL4030_OF_MATCH("ti,twl4030-vio", VIO), |
|
TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1), |
|
TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2), |
|
TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1), |
|
TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG), |
|
TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5), |
|
TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8), |
|
TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1), |
|
{}, |
|
}; |
|
MODULE_DEVICE_TABLE(of, twl_of_match); |
|
|
|
static int twlreg_probe(struct platform_device *pdev) |
|
{ |
|
int id; |
|
struct twlreg_info *info; |
|
const struct twlreg_info *template; |
|
struct regulator_init_data *initdata; |
|
struct regulation_constraints *c; |
|
struct regulator_dev *rdev; |
|
struct regulator_config config = { }; |
|
|
|
template = of_device_get_match_data(&pdev->dev); |
|
if (!template) |
|
return -ENODEV; |
|
|
|
id = template->desc.id; |
|
initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node, |
|
&template->desc); |
|
if (!initdata) |
|
return -EINVAL; |
|
|
|
info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL); |
|
if (!info) |
|
return -ENOMEM; |
|
|
|
/* Constrain board-specific capabilities according to what |
|
* this driver and the chip itself can actually do. |
|
*/ |
|
c = &initdata->constraints; |
|
c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; |
|
c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE |
|
| REGULATOR_CHANGE_MODE |
|
| REGULATOR_CHANGE_STATUS; |
|
switch (id) { |
|
case TWL4030_REG_VIO: |
|
case TWL4030_REG_VDD1: |
|
case TWL4030_REG_VDD2: |
|
case TWL4030_REG_VPLL1: |
|
case TWL4030_REG_VINTANA1: |
|
case TWL4030_REG_VINTANA2: |
|
case TWL4030_REG_VINTDIG: |
|
c->always_on = true; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
config.dev = &pdev->dev; |
|
config.init_data = initdata; |
|
config.driver_data = info; |
|
config.of_node = pdev->dev.of_node; |
|
|
|
rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(&pdev->dev, "can't register %s, %ld\n", |
|
info->desc.name, PTR_ERR(rdev)); |
|
return PTR_ERR(rdev); |
|
} |
|
platform_set_drvdata(pdev, rdev); |
|
|
|
twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP, info->remap); |
|
|
|
/* NOTE: many regulators support short-circuit IRQs (presentable |
|
* as REGULATOR_OVER_CURRENT notifications?) configured via: |
|
* - SC_CONFIG |
|
* - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) |
|
* - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) |
|
* - IT_CONFIG |
|
*/ |
|
|
|
return 0; |
|
} |
|
|
|
MODULE_ALIAS("platform:twl4030_reg"); |
|
|
|
static struct platform_driver twlreg_driver = { |
|
.probe = twlreg_probe, |
|
/* NOTE: short name, to work around driver model truncation of |
|
* "twl_regulator.12" (and friends) to "twl_regulator.1". |
|
*/ |
|
.driver = { |
|
.name = "twl4030_reg", |
|
.of_match_table = of_match_ptr(twl_of_match), |
|
}, |
|
}; |
|
|
|
static int __init twlreg_init(void) |
|
{ |
|
return platform_driver_register(&twlreg_driver); |
|
} |
|
subsys_initcall(twlreg_init); |
|
|
|
static void __exit twlreg_exit(void) |
|
{ |
|
platform_driver_unregister(&twlreg_driver); |
|
} |
|
module_exit(twlreg_exit) |
|
|
|
MODULE_DESCRIPTION("TWL4030 regulator driver"); |
|
MODULE_LICENSE("GPL");
|
|
|