regulator: Add Freescale MC13783 driver
This driver provides basic support for the voltage regulators integrated into the Freescale MC13783 PMIC. It is currently only possible to enable/disable outputs, not to actually set the voltage. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Sascha Hauer
Samuel Ortiz
parent
8238addcc5
commit
295c08bc69
@ -131,4 +131,12 @@ config REGULATOR_PCAP
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This driver provides support for the voltage regulators of the
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PCAP2 PMIC.
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config REGULATOR_MC13783
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tristate "Support regulators on Freescale MC13783 PMIC"
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depends on MFD_MC13783
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help
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Say y here to support the regulators found on the Freescale MC13783
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PMIC.
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endif
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@ -20,5 +20,6 @@ obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
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obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
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obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
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obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
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obj-$(CONFIG_REGULATOR_MC13783) += mc13783.o
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ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
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410
drivers/regulator/mc13783.c
Normal file
410
drivers/regulator/mc13783.c
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@ -0,0 +1,410 @@
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/*
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* Regulator Driver for Freescale MC13783 PMIC
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*
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* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
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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/mfd/mc13783-private.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/driver.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/mc13783.h>
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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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struct mc13783_regulator {
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struct regulator_desc desc;
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int reg;
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int enable_bit;
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};
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static struct regulator_ops mc13783_regulator_ops;
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static struct mc13783_regulator mc13783_regulators[] = {
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[MC13783_SW_SW3] = {
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.desc = {
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.name = "SW_SW3",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_SW_SW3,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_SWITCHERS_5,
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.enable_bit = MC13783_SWCTRL_SW3_EN,
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},
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[MC13783_SW_PLL] = {
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.desc = {
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.name = "SW_PLL",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_SW_PLL,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_SWITCHERS_4,
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.enable_bit = MC13783_SWCTRL_PLL_EN,
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},
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[MC13783_REGU_VAUDIO] = {
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.desc = {
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.name = "REGU_VAUDIO",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VAUDIO,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VAUDIO_EN,
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},
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[MC13783_REGU_VIOHI] = {
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.desc = {
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.name = "REGU_VIOHI",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VIOHI,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VIOHI_EN,
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},
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[MC13783_REGU_VIOLO] = {
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.desc = {
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.name = "REGU_VIOLO",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VIOLO,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VIOLO_EN,
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},
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[MC13783_REGU_VDIG] = {
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.desc = {
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.name = "REGU_VDIG",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VDIG,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VDIG_EN,
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},
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[MC13783_REGU_VGEN] = {
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.desc = {
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.name = "REGU_VGEN",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VGEN,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VGEN_EN,
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},
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[MC13783_REGU_VRFDIG] = {
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.desc = {
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.name = "REGU_VRFDIG",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VRFDIG,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VRFDIG_EN,
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},
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[MC13783_REGU_VRFREF] = {
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.desc = {
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.name = "REGU_VRFREF",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VRFREF,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VRFREF_EN,
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},
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[MC13783_REGU_VRFCP] = {
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.desc = {
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.name = "REGU_VRFCP",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VRFCP,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_0,
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.enable_bit = MC13783_REGCTRL_VRFCP_EN,
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},
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[MC13783_REGU_VSIM] = {
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.desc = {
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.name = "REGU_VSIM",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VSIM,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VSIM_EN,
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},
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[MC13783_REGU_VESIM] = {
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.desc = {
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.name = "REGU_VESIM",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VESIM,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VESIM_EN,
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},
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[MC13783_REGU_VCAM] = {
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.desc = {
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.name = "REGU_VCAM",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VCAM,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VCAM_EN,
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},
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[MC13783_REGU_VRFBG] = {
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.desc = {
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.name = "REGU_VRFBG",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VRFBG,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VRFBG_EN,
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},
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[MC13783_REGU_VVIB] = {
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.desc = {
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.name = "REGU_VVIB",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VVIB,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VVIB_EN,
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},
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[MC13783_REGU_VRF1] = {
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.desc = {
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.name = "REGU_VRF1",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VRF1,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VRF1_EN,
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},
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[MC13783_REGU_VRF2] = {
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.desc = {
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.name = "REGU_VRF2",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VRF2,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VRF2_EN,
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},
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[MC13783_REGU_VMMC1] = {
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.desc = {
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.name = "REGU_VMMC1",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VMMC1,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VMMC1_EN,
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},
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[MC13783_REGU_VMMC2] = {
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.desc = {
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.name = "REGU_VMMC2",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_VMMC2,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_REGULATOR_MODE_1,
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.enable_bit = MC13783_REGCTRL_VMMC2_EN,
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},
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[MC13783_REGU_GPO1] = {
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.desc = {
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.name = "REGU_GPO1",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_GPO1,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_POWER_MISCELLANEOUS,
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.enable_bit = MC13783_REGCTRL_GPO1_EN,
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},
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[MC13783_REGU_GPO2] = {
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.desc = {
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.name = "REGU_GPO2",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_GPO2,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_POWER_MISCELLANEOUS,
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.enable_bit = MC13783_REGCTRL_GPO2_EN,
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},
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[MC13783_REGU_GPO3] = {
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.desc = {
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.name = "REGU_GPO3",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_GPO3,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_POWER_MISCELLANEOUS,
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.enable_bit = MC13783_REGCTRL_GPO3_EN,
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},
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[MC13783_REGU_GPO4] = {
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.desc = {
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.name = "REGU_GPO4",
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.ops = &mc13783_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = MC13783_REGU_GPO4,
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.owner = THIS_MODULE,
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},
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.reg = MC13783_REG_POWER_MISCELLANEOUS,
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.enable_bit = MC13783_REGCTRL_GPO4_EN,
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},
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};
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struct mc13783_priv {
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struct regulator_desc desc[ARRAY_SIZE(mc13783_regulators)];
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struct mc13783 *mc13783;
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struct regulator_dev *regulators[0];
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};
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static int mc13783_enable(struct regulator_dev *rdev)
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{
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struct mc13783_priv *priv = rdev_get_drvdata(rdev);
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int id = rdev_get_id(rdev);
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
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mc13783_regulators[id].enable_bit,
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mc13783_regulators[id].enable_bit);
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}
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static int mc13783_disable(struct regulator_dev *rdev)
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{
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struct mc13783_priv *priv = rdev_get_drvdata(rdev);
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int id = rdev_get_id(rdev);
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
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mc13783_regulators[id].enable_bit, 0);
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}
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static int mc13783_is_enabled(struct regulator_dev *rdev)
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{
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struct mc13783_priv *priv = rdev_get_drvdata(rdev);
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int ret, id = rdev_get_id(rdev);
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unsigned int val;
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ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
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if (ret)
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return ret;
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return (val & mc13783_regulators[id].enable_bit) != 0;
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}
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static struct regulator_ops mc13783_regulator_ops = {
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.enable = mc13783_enable,
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.disable = mc13783_disable,
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.is_enabled = mc13783_is_enabled,
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};
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static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
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{
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struct mc13783_priv *priv;
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struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
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struct mc13783_regulator_init_data *init_data;
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int i, ret;
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dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
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priv = kzalloc(sizeof(*priv) + mc13783->num_regulators * sizeof(void *),
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GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->mc13783 = mc13783;
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for (i = 0; i < mc13783->num_regulators; i++) {
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init_data = &mc13783->regulators[i];
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priv->regulators[i] = regulator_register(
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&mc13783_regulators[init_data->id].desc,
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&pdev->dev, init_data->init_data, priv);
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if (IS_ERR(priv->regulators[i])) {
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dev_err(&pdev->dev, "failed to register regulator %s\n",
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mc13783_regulators[i].desc.name);
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ret = PTR_ERR(priv->regulators[i]);
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goto err;
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}
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}
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platform_set_drvdata(pdev, priv);
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return 0;
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err:
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while (--i >= 0)
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regulator_unregister(priv->regulators[i]);
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kfree(priv);
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return ret;
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}
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static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
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{
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struct mc13783_priv *priv = platform_get_drvdata(pdev);
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struct mc13783 *mc13783 = priv->mc13783;
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int i;
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for (i = 0; i < mc13783->num_regulators; i++)
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regulator_unregister(priv->regulators[i]);
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return 0;
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}
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static struct platform_driver mc13783_regulator_driver = {
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.driver = {
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.name = "mc13783-regulator",
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.owner = THIS_MODULE,
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},
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.remove = __devexit_p(mc13783_regulator_remove),
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};
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static int __init mc13783_regulator_init(void)
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{
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return platform_driver_probe(&mc13783_regulator_driver,
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mc13783_regulator_probe);
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}
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subsys_initcall(mc13783_regulator_init);
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static void __exit mc13783_regulator_exit(void)
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{
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platform_driver_unregister(&mc13783_regulator_driver);
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}
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module_exit(mc13783_regulator_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de");
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MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
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MODULE_ALIAS("platform:mc13783-regulator");
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