mirror of https://gitee.com/openkylin/linux.git
843 lines
20 KiB
C
843 lines
20 KiB
C
/*
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* TI LP8788 MFD - ldo regulator driver
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*
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* Copyright 2012 Texas Instruments
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*
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* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/gpio.h>
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#include <linux/mfd/lp8788.h>
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/* register address */
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#define LP8788_EN_LDO_A 0x0D /* DLDO 1 ~ 8 */
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#define LP8788_EN_LDO_B 0x0E /* DLDO 9 ~ 12, ALDO 1 ~ 4 */
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#define LP8788_EN_LDO_C 0x0F /* ALDO 5 ~ 10 */
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#define LP8788_EN_SEL 0x10
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#define LP8788_DLDO1_VOUT 0x2E
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#define LP8788_DLDO2_VOUT 0x2F
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#define LP8788_DLDO3_VOUT 0x30
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#define LP8788_DLDO4_VOUT 0x31
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#define LP8788_DLDO5_VOUT 0x32
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#define LP8788_DLDO6_VOUT 0x33
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#define LP8788_DLDO7_VOUT 0x34
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#define LP8788_DLDO8_VOUT 0x35
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#define LP8788_DLDO9_VOUT 0x36
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#define LP8788_DLDO10_VOUT 0x37
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#define LP8788_DLDO11_VOUT 0x38
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#define LP8788_DLDO12_VOUT 0x39
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#define LP8788_ALDO1_VOUT 0x3A
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#define LP8788_ALDO2_VOUT 0x3B
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#define LP8788_ALDO3_VOUT 0x3C
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#define LP8788_ALDO4_VOUT 0x3D
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#define LP8788_ALDO5_VOUT 0x3E
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#define LP8788_ALDO6_VOUT 0x3F
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#define LP8788_ALDO7_VOUT 0x40
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#define LP8788_ALDO8_VOUT 0x41
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#define LP8788_ALDO9_VOUT 0x42
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#define LP8788_ALDO10_VOUT 0x43
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#define LP8788_DLDO1_TIMESTEP 0x44
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/* mask/shift bits */
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#define LP8788_EN_DLDO1_M BIT(0) /* Addr 0Dh ~ 0Fh */
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#define LP8788_EN_DLDO2_M BIT(1)
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#define LP8788_EN_DLDO3_M BIT(2)
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#define LP8788_EN_DLDO4_M BIT(3)
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#define LP8788_EN_DLDO5_M BIT(4)
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#define LP8788_EN_DLDO6_M BIT(5)
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#define LP8788_EN_DLDO7_M BIT(6)
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#define LP8788_EN_DLDO8_M BIT(7)
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#define LP8788_EN_DLDO9_M BIT(0)
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#define LP8788_EN_DLDO10_M BIT(1)
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#define LP8788_EN_DLDO11_M BIT(2)
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#define LP8788_EN_DLDO12_M BIT(3)
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#define LP8788_EN_ALDO1_M BIT(4)
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#define LP8788_EN_ALDO2_M BIT(5)
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#define LP8788_EN_ALDO3_M BIT(6)
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#define LP8788_EN_ALDO4_M BIT(7)
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#define LP8788_EN_ALDO5_M BIT(0)
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#define LP8788_EN_ALDO6_M BIT(1)
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#define LP8788_EN_ALDO7_M BIT(2)
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#define LP8788_EN_ALDO8_M BIT(3)
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#define LP8788_EN_ALDO9_M BIT(4)
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#define LP8788_EN_ALDO10_M BIT(5)
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#define LP8788_EN_SEL_DLDO911_M BIT(0) /* Addr 10h */
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#define LP8788_EN_SEL_DLDO7_M BIT(1)
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#define LP8788_EN_SEL_ALDO7_M BIT(2)
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#define LP8788_EN_SEL_ALDO5_M BIT(3)
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#define LP8788_EN_SEL_ALDO234_M BIT(4)
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#define LP8788_EN_SEL_ALDO1_M BIT(5)
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#define LP8788_VOUT_5BIT_M 0x1F /* Addr 2Eh ~ 43h */
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#define LP8788_VOUT_4BIT_M 0x0F
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#define LP8788_VOUT_3BIT_M 0x07
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#define LP8788_VOUT_1BIT_M 0x01
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#define LP8788_STARTUP_TIME_M 0xF8 /* Addr 44h ~ 59h */
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#define LP8788_STARTUP_TIME_S 3
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#define ENABLE_TIME_USEC 32
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#define ENABLE GPIOF_OUT_INIT_HIGH
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#define DISABLE GPIOF_OUT_INIT_LOW
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enum lp8788_enable_mode {
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REGISTER,
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EXTPIN,
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};
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enum lp8788_ldo_id {
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DLDO1,
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DLDO2,
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DLDO3,
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DLDO4,
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DLDO5,
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DLDO6,
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DLDO7,
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DLDO8,
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DLDO9,
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DLDO10,
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DLDO11,
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DLDO12,
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ALDO1,
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ALDO2,
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ALDO3,
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ALDO4,
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ALDO5,
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ALDO6,
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ALDO7,
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ALDO8,
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ALDO9,
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ALDO10,
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};
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struct lp8788_ldo {
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struct lp8788 *lp;
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struct regulator_desc *desc;
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struct regulator_dev *regulator;
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struct lp8788_ldo_enable_pin *en_pin;
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};
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/* DLDO 1, 2, 3, 9 voltage table */
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const int lp8788_dldo1239_vtbl[] = {
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1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
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2600000, 2700000, 2800000, 2900000, 3000000, 2850000, 2850000, 2850000,
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2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000,
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2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000,
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};
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/* DLDO 4 voltage table */
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static const int lp8788_dldo4_vtbl[] = { 1800000, 3000000 };
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/* DLDO 5, 7, 8 and ALDO 6 voltage table */
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static const int lp8788_dldo578_aldo6_vtbl[] = {
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1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
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2600000, 2700000, 2800000, 2900000, 3000000, 3000000, 3000000, 3000000,
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};
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/* DLDO 6 voltage table */
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static const int lp8788_dldo6_vtbl[] = {
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3000000, 3100000, 3200000, 3300000, 3400000, 3500000, 3600000, 3600000,
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};
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/* DLDO 10, 11 voltage table */
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static const int lp8788_dldo1011_vtbl[] = {
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1100000, 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000,
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1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000,
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};
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/* ALDO 1 voltage table */
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static const int lp8788_aldo1_vtbl[] = { 1800000, 2850000 };
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/* ALDO 7 voltage table */
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static const int lp8788_aldo7_vtbl[] = {
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1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1800000,
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};
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static enum lp8788_ldo_id lp8788_dldo_id[] = {
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DLDO1,
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DLDO2,
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DLDO3,
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DLDO4,
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DLDO5,
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DLDO6,
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DLDO7,
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DLDO8,
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DLDO9,
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DLDO10,
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DLDO11,
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DLDO12,
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};
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static enum lp8788_ldo_id lp8788_aldo_id[] = {
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ALDO1,
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ALDO2,
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ALDO3,
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ALDO4,
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ALDO5,
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ALDO6,
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ALDO7,
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ALDO8,
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ALDO9,
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ALDO10,
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};
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/* DLDO 7, 9 and 11, ALDO 1 ~ 5 and 7
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: can be enabled either by external pin or by i2c register */
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static enum lp8788_enable_mode
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lp8788_get_ldo_enable_mode(struct lp8788_ldo *ldo, enum lp8788_ldo_id id)
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{
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int ret;
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u8 val, mask;
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ret = lp8788_read_byte(ldo->lp, LP8788_EN_SEL, &val);
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if (ret)
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return ret;
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switch (id) {
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case DLDO7:
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mask = LP8788_EN_SEL_DLDO7_M;
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break;
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case DLDO9:
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case DLDO11:
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mask = LP8788_EN_SEL_DLDO911_M;
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break;
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case ALDO1:
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mask = LP8788_EN_SEL_ALDO1_M;
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break;
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case ALDO2 ... ALDO4:
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mask = LP8788_EN_SEL_ALDO234_M;
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break;
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case ALDO5:
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mask = LP8788_EN_SEL_ALDO5_M;
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break;
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case ALDO7:
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mask = LP8788_EN_SEL_ALDO7_M;
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break;
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default:
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return REGISTER;
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}
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return val & mask ? EXTPIN : REGISTER;
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}
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static int lp8788_ldo_ctrl_by_extern_pin(struct lp8788_ldo *ldo, int pinstate)
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{
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struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
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if (!pin)
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return -EINVAL;
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if (gpio_is_valid(pin->gpio))
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gpio_set_value(pin->gpio, pinstate);
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return 0;
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}
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static int lp8788_ldo_is_enabled_by_extern_pin(struct lp8788_ldo *ldo)
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{
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struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
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if (!pin)
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return -EINVAL;
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return gpio_get_value(pin->gpio) ? 1 : 0;
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}
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static int lp8788_ldo_enable(struct regulator_dev *rdev)
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{
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struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
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enum lp8788_ldo_id id = rdev_get_id(rdev);
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enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id);
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switch (mode) {
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case EXTPIN:
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return lp8788_ldo_ctrl_by_extern_pin(ldo, ENABLE);
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case REGISTER:
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return regulator_enable_regmap(rdev);
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default:
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return -EINVAL;
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}
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}
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static int lp8788_ldo_disable(struct regulator_dev *rdev)
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{
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struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
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enum lp8788_ldo_id id = rdev_get_id(rdev);
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enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id);
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switch (mode) {
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case EXTPIN:
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return lp8788_ldo_ctrl_by_extern_pin(ldo, DISABLE);
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case REGISTER:
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return regulator_disable_regmap(rdev);
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default:
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return -EINVAL;
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}
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}
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static int lp8788_ldo_is_enabled(struct regulator_dev *rdev)
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{
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struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
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enum lp8788_ldo_id id = rdev_get_id(rdev);
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enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id);
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switch (mode) {
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case EXTPIN:
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return lp8788_ldo_is_enabled_by_extern_pin(ldo);
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case REGISTER:
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return regulator_is_enabled_regmap(rdev);
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default:
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return -EINVAL;
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}
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}
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static int lp8788_ldo_enable_time(struct regulator_dev *rdev)
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{
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struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
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enum lp8788_ldo_id id = rdev_get_id(rdev);
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u8 val, addr = LP8788_DLDO1_TIMESTEP + id;
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if (lp8788_read_byte(ldo->lp, addr, &val))
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return -EINVAL;
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val = (val & LP8788_STARTUP_TIME_M) >> LP8788_STARTUP_TIME_S;
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return ENABLE_TIME_USEC * val;
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}
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static int lp8788_ldo_fixed_get_voltage(struct regulator_dev *rdev)
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{
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enum lp8788_ldo_id id = rdev_get_id(rdev);
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switch (id) {
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case ALDO2 ... ALDO5:
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return 2850000;
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case DLDO12:
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case ALDO8 ... ALDO9:
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return 2500000;
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case ALDO10:
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return 1100000;
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default:
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return -EINVAL;
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}
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}
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static struct regulator_ops lp8788_ldo_voltage_table_ops = {
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.list_voltage = regulator_list_voltage_table,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.enable = lp8788_ldo_enable,
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.disable = lp8788_ldo_disable,
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.is_enabled = lp8788_ldo_is_enabled,
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.enable_time = lp8788_ldo_enable_time,
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};
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static struct regulator_ops lp8788_ldo_voltage_fixed_ops = {
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.get_voltage = lp8788_ldo_fixed_get_voltage,
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.enable = lp8788_ldo_enable,
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.disable = lp8788_ldo_disable,
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.is_enabled = lp8788_ldo_is_enabled,
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.enable_time = lp8788_ldo_enable_time,
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};
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static struct regulator_desc lp8788_dldo_desc[] = {
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{
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.name = "dldo1",
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.id = DLDO1,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO1_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO1_M,
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},
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{
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.name = "dldo2",
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.id = DLDO2,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO2_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO2_M,
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},
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{
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.name = "dldo3",
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.id = DLDO3,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO3_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO3_M,
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},
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{
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.name = "dldo4",
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.id = DLDO4,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo4_vtbl),
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.volt_table = lp8788_dldo4_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO4_VOUT,
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.vsel_mask = LP8788_VOUT_1BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO4_M,
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},
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{
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.name = "dldo5",
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.id = DLDO5,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
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.volt_table = lp8788_dldo578_aldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO5_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO5_M,
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},
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{
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.name = "dldo6",
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.id = DLDO6,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo6_vtbl),
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.volt_table = lp8788_dldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO6_VOUT,
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.vsel_mask = LP8788_VOUT_3BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO6_M,
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},
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{
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.name = "dldo7",
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.id = DLDO7,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
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.volt_table = lp8788_dldo578_aldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO7_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO7_M,
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},
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{
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.name = "dldo8",
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.id = DLDO8,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
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.volt_table = lp8788_dldo578_aldo6_vtbl,
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|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_DLDO8_VOUT,
|
|
.vsel_mask = LP8788_VOUT_4BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_A,
|
|
.enable_mask = LP8788_EN_DLDO8_M,
|
|
},
|
|
{
|
|
.name = "dldo9",
|
|
.id = DLDO9,
|
|
.ops = &lp8788_ldo_voltage_table_ops,
|
|
.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
|
|
.volt_table = lp8788_dldo1239_vtbl,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_DLDO9_VOUT,
|
|
.vsel_mask = LP8788_VOUT_5BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_DLDO9_M,
|
|
},
|
|
{
|
|
.name = "dldo10",
|
|
.id = DLDO10,
|
|
.ops = &lp8788_ldo_voltage_table_ops,
|
|
.n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl),
|
|
.volt_table = lp8788_dldo1011_vtbl,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_DLDO10_VOUT,
|
|
.vsel_mask = LP8788_VOUT_4BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_DLDO10_M,
|
|
},
|
|
{
|
|
.name = "dldo11",
|
|
.id = DLDO11,
|
|
.ops = &lp8788_ldo_voltage_table_ops,
|
|
.n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl),
|
|
.volt_table = lp8788_dldo1011_vtbl,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_DLDO11_VOUT,
|
|
.vsel_mask = LP8788_VOUT_4BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_DLDO11_M,
|
|
},
|
|
{
|
|
.name = "dldo12",
|
|
.id = DLDO12,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_DLDO12_M,
|
|
},
|
|
};
|
|
|
|
static struct regulator_desc lp8788_aldo_desc[] = {
|
|
{
|
|
.name = "aldo1",
|
|
.id = ALDO1,
|
|
.ops = &lp8788_ldo_voltage_table_ops,
|
|
.n_voltages = ARRAY_SIZE(lp8788_aldo1_vtbl),
|
|
.volt_table = lp8788_aldo1_vtbl,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_ALDO1_VOUT,
|
|
.vsel_mask = LP8788_VOUT_1BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_ALDO1_M,
|
|
},
|
|
{
|
|
.name = "aldo2",
|
|
.id = ALDO2,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_ALDO2_M,
|
|
},
|
|
{
|
|
.name = "aldo3",
|
|
.id = ALDO3,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_ALDO3_M,
|
|
},
|
|
{
|
|
.name = "aldo4",
|
|
.id = ALDO4,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_B,
|
|
.enable_mask = LP8788_EN_ALDO4_M,
|
|
},
|
|
{
|
|
.name = "aldo5",
|
|
.id = ALDO5,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_C,
|
|
.enable_mask = LP8788_EN_ALDO5_M,
|
|
},
|
|
{
|
|
.name = "aldo6",
|
|
.id = ALDO6,
|
|
.ops = &lp8788_ldo_voltage_table_ops,
|
|
.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
|
|
.volt_table = lp8788_dldo578_aldo6_vtbl,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_ALDO6_VOUT,
|
|
.vsel_mask = LP8788_VOUT_4BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_C,
|
|
.enable_mask = LP8788_EN_ALDO6_M,
|
|
},
|
|
{
|
|
.name = "aldo7",
|
|
.id = ALDO7,
|
|
.ops = &lp8788_ldo_voltage_table_ops,
|
|
.n_voltages = ARRAY_SIZE(lp8788_aldo7_vtbl),
|
|
.volt_table = lp8788_aldo7_vtbl,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.vsel_reg = LP8788_ALDO7_VOUT,
|
|
.vsel_mask = LP8788_VOUT_3BIT_M,
|
|
.enable_reg = LP8788_EN_LDO_C,
|
|
.enable_mask = LP8788_EN_ALDO7_M,
|
|
},
|
|
{
|
|
.name = "aldo8",
|
|
.id = ALDO8,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_C,
|
|
.enable_mask = LP8788_EN_ALDO8_M,
|
|
},
|
|
{
|
|
.name = "aldo9",
|
|
.id = ALDO9,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_C,
|
|
.enable_mask = LP8788_EN_ALDO9_M,
|
|
},
|
|
{
|
|
.name = "aldo10",
|
|
.id = ALDO10,
|
|
.ops = &lp8788_ldo_voltage_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.enable_reg = LP8788_EN_LDO_C,
|
|
.enable_mask = LP8788_EN_ALDO10_M,
|
|
},
|
|
};
|
|
|
|
static int lp8788_gpio_request_ldo_en(struct lp8788_ldo *ldo,
|
|
enum lp8788_ext_ldo_en_id id)
|
|
{
|
|
struct device *dev = ldo->lp->dev;
|
|
struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
|
|
int ret, gpio, pinstate;
|
|
char *name[] = {
|
|
[EN_ALDO1] = "LP8788_EN_ALDO1",
|
|
[EN_ALDO234] = "LP8788_EN_ALDO234",
|
|
[EN_ALDO5] = "LP8788_EN_ALDO5",
|
|
[EN_ALDO7] = "LP8788_EN_ALDO7",
|
|
[EN_DLDO7] = "LP8788_EN_DLDO7",
|
|
[EN_DLDO911] = "LP8788_EN_DLDO911",
|
|
};
|
|
|
|
gpio = pin->gpio;
|
|
if (!gpio_is_valid(gpio)) {
|
|
dev_err(dev, "invalid gpio: %d\n", gpio);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pinstate = pin->init_state;
|
|
ret = devm_gpio_request_one(dev, gpio, pinstate, name[id]);
|
|
if (ret == -EBUSY) {
|
|
dev_warn(dev, "gpio%d already used\n", gpio);
|
|
return 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lp8788_config_ldo_enable_mode(struct lp8788_ldo *ldo,
|
|
enum lp8788_ldo_id id)
|
|
{
|
|
int ret;
|
|
struct lp8788 *lp = ldo->lp;
|
|
struct lp8788_platform_data *pdata = lp->pdata;
|
|
enum lp8788_ext_ldo_en_id enable_id;
|
|
u8 en_mask[] = {
|
|
[EN_ALDO1] = LP8788_EN_SEL_ALDO1_M,
|
|
[EN_ALDO234] = LP8788_EN_SEL_ALDO234_M,
|
|
[EN_ALDO5] = LP8788_EN_SEL_ALDO5_M,
|
|
[EN_ALDO7] = LP8788_EN_SEL_ALDO7_M,
|
|
[EN_DLDO7] = LP8788_EN_SEL_DLDO7_M,
|
|
[EN_DLDO911] = LP8788_EN_SEL_DLDO911_M,
|
|
};
|
|
u8 val[] = {
|
|
[EN_ALDO1] = 0 << 5,
|
|
[EN_ALDO234] = 0 << 4,
|
|
[EN_ALDO5] = 0 << 3,
|
|
[EN_ALDO7] = 0 << 2,
|
|
[EN_DLDO7] = 0 << 1,
|
|
[EN_DLDO911] = 0 << 0,
|
|
};
|
|
|
|
switch (id) {
|
|
case DLDO7:
|
|
enable_id = EN_DLDO7;
|
|
break;
|
|
case DLDO9:
|
|
case DLDO11:
|
|
enable_id = EN_DLDO911;
|
|
break;
|
|
case ALDO1:
|
|
enable_id = EN_ALDO1;
|
|
break;
|
|
case ALDO2 ... ALDO4:
|
|
enable_id = EN_ALDO234;
|
|
break;
|
|
case ALDO5:
|
|
enable_id = EN_ALDO5;
|
|
break;
|
|
case ALDO7:
|
|
enable_id = EN_ALDO7;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
/* if no platform data for ldo pin, then set default enable mode */
|
|
if (!pdata || !pdata->ldo_pin || !pdata->ldo_pin[enable_id])
|
|
goto set_default_ldo_enable_mode;
|
|
|
|
ldo->en_pin = pdata->ldo_pin[enable_id];
|
|
|
|
ret = lp8788_gpio_request_ldo_en(ldo, enable_id);
|
|
if (ret)
|
|
goto set_default_ldo_enable_mode;
|
|
|
|
return ret;
|
|
|
|
set_default_ldo_enable_mode:
|
|
return lp8788_update_bits(lp, LP8788_EN_SEL, en_mask[enable_id],
|
|
val[enable_id]);
|
|
}
|
|
|
|
static __devinit int lp8788_dldo_probe(struct platform_device *pdev)
|
|
{
|
|
struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
|
|
int id = pdev->id;
|
|
struct lp8788_ldo *ldo;
|
|
struct regulator_config cfg = { };
|
|
struct regulator_dev *rdev;
|
|
int ret;
|
|
|
|
ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
|
|
if (!ldo)
|
|
return -ENOMEM;
|
|
|
|
ldo->lp = lp;
|
|
ret = lp8788_config_ldo_enable_mode(ldo, lp8788_dldo_id[id]);
|
|
if (ret)
|
|
return ret;
|
|
|
|
cfg.dev = lp->dev;
|
|
cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL;
|
|
cfg.driver_data = ldo;
|
|
cfg.regmap = lp->regmap;
|
|
|
|
rdev = regulator_register(&lp8788_dldo_desc[id], &cfg);
|
|
if (IS_ERR(rdev)) {
|
|
ret = PTR_ERR(rdev);
|
|
dev_err(lp->dev, "DLDO%d regulator register err = %d\n",
|
|
id + 1, ret);
|
|
return ret;
|
|
}
|
|
|
|
ldo->regulator = rdev;
|
|
platform_set_drvdata(pdev, ldo);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit lp8788_dldo_remove(struct platform_device *pdev)
|
|
{
|
|
struct lp8788_ldo *ldo = platform_get_drvdata(pdev);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
regulator_unregister(ldo->regulator);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver lp8788_dldo_driver = {
|
|
.probe = lp8788_dldo_probe,
|
|
.remove = __devexit_p(lp8788_dldo_remove),
|
|
.driver = {
|
|
.name = LP8788_DEV_DLDO,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static __devinit int lp8788_aldo_probe(struct platform_device *pdev)
|
|
{
|
|
struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
|
|
int id = pdev->id;
|
|
struct lp8788_ldo *ldo;
|
|
struct regulator_config cfg = { };
|
|
struct regulator_dev *rdev;
|
|
int ret;
|
|
|
|
ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
|
|
if (!ldo)
|
|
return -ENOMEM;
|
|
|
|
ldo->lp = lp;
|
|
ret = lp8788_config_ldo_enable_mode(ldo, lp8788_aldo_id[id]);
|
|
if (ret)
|
|
return ret;
|
|
|
|
cfg.dev = lp->dev;
|
|
cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL;
|
|
cfg.driver_data = ldo;
|
|
cfg.regmap = lp->regmap;
|
|
|
|
rdev = regulator_register(&lp8788_aldo_desc[id], &cfg);
|
|
if (IS_ERR(rdev)) {
|
|
ret = PTR_ERR(rdev);
|
|
dev_err(lp->dev, "ALDO%d regulator register err = %d\n",
|
|
id + 1, ret);
|
|
return ret;
|
|
}
|
|
|
|
ldo->regulator = rdev;
|
|
platform_set_drvdata(pdev, ldo);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit lp8788_aldo_remove(struct platform_device *pdev)
|
|
{
|
|
struct lp8788_ldo *ldo = platform_get_drvdata(pdev);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
regulator_unregister(ldo->regulator);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver lp8788_aldo_driver = {
|
|
.probe = lp8788_aldo_probe,
|
|
.remove = __devexit_p(lp8788_aldo_remove),
|
|
.driver = {
|
|
.name = LP8788_DEV_ALDO,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init lp8788_ldo_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = platform_driver_register(&lp8788_dldo_driver);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return platform_driver_register(&lp8788_aldo_driver);
|
|
}
|
|
subsys_initcall(lp8788_ldo_init);
|
|
|
|
static void __exit lp8788_ldo_exit(void)
|
|
{
|
|
platform_driver_unregister(&lp8788_aldo_driver);
|
|
platform_driver_unregister(&lp8788_dldo_driver);
|
|
}
|
|
module_exit(lp8788_ldo_exit);
|
|
|
|
MODULE_DESCRIPTION("TI LP8788 LDO Driver");
|
|
MODULE_AUTHOR("Milo Kim");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:lp8788-dldo");
|
|
MODULE_ALIAS("platform:lp8788-aldo");
|