9f79e9db2e
A lot of condition comparision statements are used in original driver. These statements are used to check the boundary of voltage numbers since voltage number isn't linear. Now use array of voltage numbers instead. Clean code with simpler way. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
475 lines
15 KiB
C
475 lines
15 KiB
C
/*
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* Regulators driver for Marvell 88PM8607
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*
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* Copyright (C) 2009 Marvell International Ltd.
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* Haojian Zhuang <haojian.zhuang@marvell.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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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/i2c.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/regulator/machine.h>
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#include <linux/mfd/88pm860x.h>
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struct pm8607_regulator_info {
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struct regulator_desc desc;
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struct pm860x_chip *chip;
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struct regulator_dev *regulator;
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struct i2c_client *i2c;
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unsigned int *vol_table;
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unsigned int *vol_suspend;
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int vol_reg;
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int vol_shift;
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int vol_nbits;
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int update_reg;
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int update_bit;
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int enable_reg;
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int enable_bit;
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int slope_double;
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};
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static const unsigned int BUCK1_table[] = {
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725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
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925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
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1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
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1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
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0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
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200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
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400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
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600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
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};
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static const unsigned int BUCK1_suspend_table[] = {
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0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
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200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
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400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
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600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
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800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
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1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
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1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
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1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
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};
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static const unsigned int BUCK2_table[] = {
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0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
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400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
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800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
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1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
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1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
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2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
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2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
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2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
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};
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static const unsigned int BUCK2_suspend_table[] = {
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0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
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400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
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800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
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1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
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1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
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2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
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2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
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2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
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};
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static const unsigned int BUCK3_table[] = {
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0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
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200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
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400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
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600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
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800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
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1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
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1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
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1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
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};
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static const unsigned int BUCK3_suspend_table[] = {
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0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
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200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
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400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
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600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
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800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
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1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
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1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
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1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
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};
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static const unsigned int LDO1_table[] = {
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1800000, 1200000, 2800000, 0,
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};
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static const unsigned int LDO1_suspend_table[] = {
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1800000, 1200000, 0, 0,
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};
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static const unsigned int LDO2_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
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};
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static const unsigned int LDO2_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO3_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
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};
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static const unsigned int LDO3_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO4_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
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};
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static const unsigned int LDO4_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
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};
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static const unsigned int LDO5_table[] = {
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2900000, 3000000, 3100000, 3300000,
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};
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static const unsigned int LDO5_suspend_table[] = {
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2900000, 0, 0, 0,
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};
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static const unsigned int LDO6_table[] = {
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1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
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};
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static const unsigned int LDO6_suspend_table[] = {
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1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
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};
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static const unsigned int LDO7_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO7_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO8_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO8_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO9_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
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};
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static const unsigned int LDO9_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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};
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static const unsigned int LDO10_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
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1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
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};
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static const unsigned int LDO10_suspend_table[] = {
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1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
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1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
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};
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static const unsigned int LDO12_table[] = {
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1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
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1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
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};
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static const unsigned int LDO12_suspend_table[] = {
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1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
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1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
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};
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static const unsigned int LDO13_table[] = {
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1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 0,
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};
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static const unsigned int LDO13_suspend_table[] = {
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0,
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};
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static const unsigned int LDO14_table[] = {
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1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
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};
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static const unsigned int LDO14_suspend_table[] = {
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1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
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};
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static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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int ret = -EINVAL;
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if (info->vol_table && (index < (2 << info->vol_nbits))) {
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ret = info->vol_table[index];
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if (info->slope_double)
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ret <<= 1;
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}
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return ret;
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}
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static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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int i, ret = -ENOENT;
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if (info->slope_double) {
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min_uV = min_uV >> 1;
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max_uV = max_uV >> 1;
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}
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if (info->vol_table) {
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for (i = 0; i < (2 << info->vol_nbits); i++) {
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if (!info->vol_table[i])
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break;
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if ((min_uV <= info->vol_table[i])
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&& (max_uV >= info->vol_table[i])) {
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ret = i;
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break;
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}
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}
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}
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if (ret < 0)
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pr_err("invalid voltage range (%d %d) uV\n", min_uV, max_uV);
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return ret;
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}
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static int pm8607_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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uint8_t val, mask;
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int ret;
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if (min_uV > max_uV) {
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pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
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return -EINVAL;
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}
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ret = choose_voltage(rdev, min_uV, max_uV);
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if (ret < 0)
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return -EINVAL;
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val = (uint8_t)(ret << info->vol_shift);
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mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
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ret = pm860x_set_bits(info->i2c, info->vol_reg, mask, val);
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if (ret)
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return ret;
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switch (info->desc.id) {
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case PM8607_ID_BUCK1:
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case PM8607_ID_BUCK3:
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ret = pm860x_set_bits(info->i2c, info->update_reg,
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1 << info->update_bit,
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1 << info->update_bit);
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break;
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}
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return ret;
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}
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static int pm8607_get_voltage(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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uint8_t val, mask;
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int ret;
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ret = pm860x_reg_read(info->i2c, info->vol_reg);
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if (ret < 0)
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return ret;
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mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
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val = ((unsigned char)ret & mask) >> info->vol_shift;
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return pm8607_list_voltage(rdev, val);
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}
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static int pm8607_enable(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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return pm860x_set_bits(info->i2c, info->enable_reg,
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1 << info->enable_bit,
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1 << info->enable_bit);
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}
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static int pm8607_disable(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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return pm860x_set_bits(info->i2c, info->enable_reg,
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1 << info->enable_bit, 0);
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}
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static int pm8607_is_enabled(struct regulator_dev *rdev)
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{
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struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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int ret;
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ret = pm860x_reg_read(info->i2c, info->enable_reg);
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if (ret < 0)
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return ret;
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return !!((unsigned char)ret & (1 << info->enable_bit));
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}
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static struct regulator_ops pm8607_regulator_ops = {
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.set_voltage = pm8607_set_voltage,
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.get_voltage = pm8607_get_voltage,
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.enable = pm8607_enable,
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.disable = pm8607_disable,
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.is_enabled = pm8607_is_enabled,
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};
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#define PM8607_DVC(vreg, nbits, ureg, ubit, ereg, ebit) \
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{ \
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.desc = { \
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.name = #vreg, \
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.ops = &pm8607_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = PM8607_ID_##vreg, \
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.owner = THIS_MODULE, \
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}, \
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.vol_reg = PM8607_##vreg, \
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.vol_shift = (0), \
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.vol_nbits = (nbits), \
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.update_reg = PM8607_##ureg, \
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.update_bit = (ubit), \
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.enable_reg = PM8607_##ereg, \
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.enable_bit = (ebit), \
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.slope_double = (0), \
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.vol_table = (unsigned int *)&vreg##_table, \
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.vol_suspend = (unsigned int *)&vreg##_suspend_table, \
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}
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#define PM8607_LDO(_id, vreg, shift, nbits, ereg, ebit) \
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{ \
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.desc = { \
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.name = "LDO" #_id, \
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.ops = &pm8607_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = PM8607_ID_LDO##_id, \
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.owner = THIS_MODULE, \
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}, \
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.vol_reg = PM8607_##vreg, \
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.vol_shift = (shift), \
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.vol_nbits = (nbits), \
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.enable_reg = PM8607_##ereg, \
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.enable_bit = (ebit), \
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.slope_double = (0), \
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.vol_table = (unsigned int *)&LDO##_id##_table, \
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.vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
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}
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static struct pm8607_regulator_info pm8607_regulator_info[] = {
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PM8607_DVC(BUCK1, 6, GO, 0, SUPPLIES_EN11, 0),
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PM8607_DVC(BUCK2, 6, GO, 1, SUPPLIES_EN11, 1),
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PM8607_DVC(BUCK3, 6, GO, 2, SUPPLIES_EN11, 2),
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PM8607_LDO( 1, LDO1, 0, 2, SUPPLIES_EN11, 3),
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PM8607_LDO( 2, LDO2, 0, 3, SUPPLIES_EN11, 4),
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PM8607_LDO( 3, LDO3, 0, 3, SUPPLIES_EN11, 5),
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PM8607_LDO( 4, LDO4, 0, 3, SUPPLIES_EN11, 6),
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PM8607_LDO( 5, LDO5, 0, 2, SUPPLIES_EN11, 7),
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PM8607_LDO( 6, LDO6, 0, 3, SUPPLIES_EN12, 0),
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PM8607_LDO( 7, LDO7, 0, 3, SUPPLIES_EN12, 1),
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PM8607_LDO( 8, LDO8, 0, 3, SUPPLIES_EN12, 2),
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PM8607_LDO( 9, LDO9, 0, 3, SUPPLIES_EN12, 3),
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PM8607_LDO(10, LDO10, 0, 3, SUPPLIES_EN12, 4),
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PM8607_LDO(12, LDO12, 0, 4, SUPPLIES_EN12, 5),
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PM8607_LDO(13, VIBRATOR_SET, 1, 3, VIBRATOR_SET, 0),
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PM8607_LDO(14, LDO14, 0, 4, SUPPLIES_EN12, 6),
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};
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static inline struct pm8607_regulator_info *find_regulator_info(int id)
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{
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struct pm8607_regulator_info *info;
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int i;
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for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
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info = &pm8607_regulator_info[i];
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if (info->desc.id == id)
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return info;
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}
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return NULL;
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}
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static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
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{
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struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
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struct pm860x_platform_data *pdata = chip->dev->platform_data;
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struct pm8607_regulator_info *info = NULL;
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info = find_regulator_info(pdev->id);
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if (info == NULL) {
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dev_err(&pdev->dev, "invalid regulator ID specified\n");
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return -EINVAL;
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}
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info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
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info->chip = chip;
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info->regulator = regulator_register(&info->desc, &pdev->dev,
|
|
pdata->regulator[pdev->id], info);
|
|
if (IS_ERR(info->regulator)) {
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
info->desc.name);
|
|
return PTR_ERR(info->regulator);
|
|
}
|
|
|
|
/* check DVC ramp slope double */
|
|
if (info->desc.id == PM8607_ID_BUCK3)
|
|
if (info->chip->buck3_double)
|
|
info->slope_double = 1;
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
regulator_unregister(info->regulator);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver pm8607_regulator_driver = {
|
|
.driver = {
|
|
.name = "88pm860x-regulator",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = pm8607_regulator_probe,
|
|
.remove = __devexit_p(pm8607_regulator_remove),
|
|
};
|
|
|
|
static int __init pm8607_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&pm8607_regulator_driver);
|
|
}
|
|
subsys_initcall(pm8607_regulator_init);
|
|
|
|
static void __exit pm8607_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&pm8607_regulator_driver);
|
|
}
|
|
module_exit(pm8607_regulator_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
|
|
MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
|
|
MODULE_ALIAS("platform:88pm8607-regulator");
|