/*
* Arizona core driver
*
* Copyright 2012 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/machine.h>
#include <linux/slab.h>
#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/registers.h>
#include "arizona.h"
static const char *wm5102_core_supplies[] = {
"AVDD",
"DBVDD1",
};
int arizona_clk32k_enable(struct arizona *arizona)
{
int ret = 0;
mutex_lock(&arizona->clk_lock);
arizona->clk32k_ref++;
if (arizona->clk32k_ref == 1) {
switch (arizona->pdata.clk32k_src) {
case ARIZONA_32KZ_MCLK1:
ret = pm_runtime_get_sync(arizona->dev);
if (ret != 0)
goto out;
break;
}
ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
ARIZONA_CLK_32K_ENA,
ARIZONA_CLK_32K_ENA);
}
out:
if (ret != 0)
arizona->clk32k_ref--;
mutex_unlock(&arizona->clk_lock);
return ret;
}
EXPORT_SYMBOL_GPL(arizona_clk32k_enable);
int arizona_clk32k_disable(struct arizona *arizona)
{
int ret = 0;
mutex_lock(&arizona->clk_lock);
BUG_ON(arizona->clk32k_ref <= 0);
arizona->clk32k_ref--;
if (arizona->clk32k_ref == 0) {
regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
ARIZONA_CLK_32K_ENA, 0);
switch (arizona->pdata.clk32k_src) {
case ARIZONA_32KZ_MCLK1:
pm_runtime_put_sync(arizona->dev);
break;
}
}
mutex_unlock(&arizona->clk_lock);
return ret;
}
EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
static irqreturn_t arizona_clkgen_err(int irq, void *data)
{
struct arizona *arizona = data;
dev_err(arizona->dev, "CLKGEN error\n");
return IRQ_HANDLED;
}
static irqreturn_t arizona_underclocked(int irq, void *data)
{
struct arizona *arizona = data;
unsigned int val;
int ret;
ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8,
&val);
if (ret != 0) {
dev_err(arizona->dev, "Failed to read underclock status: %d\n",
ret);
return IRQ_NONE;
}
if (val & ARIZONA_AIF3_UNDERCLOCKED_STS)
dev_err(arizona->dev, "AIF3 underclocked\n");
if (val & ARIZONA_AIF2_UNDERCLOCKED_STS)
dev_err(arizona->dev, "AIF2 underclocked\n");
if (val & ARIZONA_AIF1_UNDERCLOCKED_STS)
dev_err(arizona->dev, "AIF1 underclocked\n");
if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS)
dev_err(arizona->dev, "ISRC2 underclocked\n");
if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
dev_err(arizona->dev, "ISRC1 underclocked\n");
if (val & ARIZONA_FX_UNDERCLOCKED_STS)
dev_err(arizona->dev, "FX underclocked\n");
if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
dev_err(arizona->dev, "ASRC underclocked\n");
if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
dev_err(arizona->dev, "DAC underclocked\n");
if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
dev_err(arizona->dev, "ADC underclocked\n");
if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
dev_err(arizona->dev, "Mixer dropped sample\n");
return IRQ_HANDLED;
}
static irqreturn_t arizona_overclocked(int irq, void *data)
{
struct arizona *arizona = data;
unsigned int val[2];
int ret;
ret =