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1df5981b82
Factor out the register read/write code to use the register map API. We still need some wm831x specific code and locking in place to check that the user key is handled correctly but only on the write side, reads are not affected by the key. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com>
1577 lines
32 KiB
C
1577 lines
32 KiB
C
/*
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* wm831x-core.c -- Device access for Wolfson WM831x PMICs
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*
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* Copyright 2009 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/bcd.h>
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#include <linux/delay.h>
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#include <linux/mfd/core.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/mfd/wm831x/core.h>
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#include <linux/mfd/wm831x/pdata.h>
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#include <linux/mfd/wm831x/irq.h>
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#include <linux/mfd/wm831x/auxadc.h>
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#include <linux/mfd/wm831x/otp.h>
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#include <linux/mfd/wm831x/regulator.h>
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/* Current settings - values are 2*2^(reg_val/4) microamps. These are
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* exported since they are used by multiple drivers.
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*/
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int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
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2,
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2,
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3,
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3,
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4,
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5,
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6,
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7,
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8,
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10,
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11,
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13,
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16,
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19,
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23,
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27,
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32,
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38,
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45,
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54,
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64,
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76,
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91,
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108,
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128,
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152,
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181,
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215,
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256,
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304,
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362,
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431,
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512,
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609,
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724,
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861,
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1024,
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1218,
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1448,
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1722,
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2048,
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2435,
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2896,
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3444,
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4096,
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4871,
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5793,
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6889,
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8192,
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9742,
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11585,
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13777,
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16384,
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19484,
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23170,
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27554,
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};
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EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
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static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
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{
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if (!wm831x->locked)
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return 0;
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switch (reg) {
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case WM831X_WATCHDOG:
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case WM831X_DC4_CONTROL:
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case WM831X_ON_PIN_CONTROL:
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case WM831X_BACKUP_CHARGER_CONTROL:
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case WM831X_CHARGER_CONTROL_1:
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case WM831X_CHARGER_CONTROL_2:
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return 1;
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default:
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return 0;
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}
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}
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/**
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* wm831x_reg_unlock: Unlock user keyed registers
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*
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* The WM831x has a user key preventing writes to particularly
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* critical registers. This function locks those registers,
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* allowing writes to them.
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*/
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void wm831x_reg_lock(struct wm831x *wm831x)
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{
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int ret;
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ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
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if (ret == 0) {
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dev_vdbg(wm831x->dev, "Registers locked\n");
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mutex_lock(&wm831x->io_lock);
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WARN_ON(wm831x->locked);
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wm831x->locked = 1;
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mutex_unlock(&wm831x->io_lock);
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} else {
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dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
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}
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}
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EXPORT_SYMBOL_GPL(wm831x_reg_lock);
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/**
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* wm831x_reg_unlock: Unlock user keyed registers
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*
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* The WM831x has a user key preventing writes to particularly
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* critical registers. This function locks those registers,
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* preventing spurious writes.
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*/
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int wm831x_reg_unlock(struct wm831x *wm831x)
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{
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int ret;
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/* 0x9716 is the value required to unlock the registers */
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ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
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if (ret == 0) {
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dev_vdbg(wm831x->dev, "Registers unlocked\n");
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mutex_lock(&wm831x->io_lock);
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WARN_ON(!wm831x->locked);
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wm831x->locked = 0;
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mutex_unlock(&wm831x->io_lock);
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
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/**
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* wm831x_reg_read: Read a single WM831x register.
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*
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* @wm831x: Device to read from.
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* @reg: Register to read.
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*/
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int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
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{
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unsigned int val;
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int ret;
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ret = regmap_read(wm831x->regmap, reg, &val);
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if (ret < 0)
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return ret;
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else
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return val;
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}
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EXPORT_SYMBOL_GPL(wm831x_reg_read);
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/**
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* wm831x_bulk_read: Read multiple WM831x registers
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*
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* @wm831x: Device to read from
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* @reg: First register
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* @count: Number of registers
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* @buf: Buffer to fill.
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*/
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int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
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int count, u16 *buf)
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{
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return regmap_bulk_read(wm831x->regmap, reg, buf, count);
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}
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EXPORT_SYMBOL_GPL(wm831x_bulk_read);
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static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
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int bytes, void *src)
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{
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u16 *buf = src;
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int i, ret;
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BUG_ON(bytes % 2);
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BUG_ON(bytes <= 0);
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for (i = 0; i < bytes / 2; i++) {
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if (wm831x_reg_locked(wm831x, reg))
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return -EPERM;
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dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
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buf[i], reg + i, reg + i);
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ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
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}
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return 0;
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}
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/**
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* wm831x_reg_write: Write a single WM831x register.
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*
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* @wm831x: Device to write to.
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* @reg: Register to write to.
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* @val: Value to write.
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*/
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int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
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unsigned short val)
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{
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int ret;
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mutex_lock(&wm831x->io_lock);
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ret = wm831x_write(wm831x, reg, 2, &val);
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mutex_unlock(&wm831x->io_lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(wm831x_reg_write);
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/**
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* wm831x_set_bits: Set the value of a bitfield in a WM831x register
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*
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* @wm831x: Device to write to.
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* @reg: Register to write to.
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* @mask: Mask of bits to set.
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* @val: Value to set (unshifted)
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*/
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int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
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unsigned short mask, unsigned short val)
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{
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int ret;
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mutex_lock(&wm831x->io_lock);
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if (!wm831x_reg_locked(wm831x, reg))
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ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
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else
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ret = -EPERM;
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mutex_unlock(&wm831x->io_lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(wm831x_set_bits);
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static struct resource wm831x_dcdc1_resources[] = {
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{
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.start = WM831X_DC1_CONTROL_1,
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.end = WM831X_DC1_DVS_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_DC1,
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.end = WM831X_IRQ_UV_DC1,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "HC",
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.start = WM831X_IRQ_HC_DC1,
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.end = WM831X_IRQ_HC_DC1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_dcdc2_resources[] = {
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{
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.start = WM831X_DC2_CONTROL_1,
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.end = WM831X_DC2_DVS_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_DC2,
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.end = WM831X_IRQ_UV_DC2,
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.flags = IORESOURCE_IRQ,
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},
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{
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.name = "HC",
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.start = WM831X_IRQ_HC_DC2,
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.end = WM831X_IRQ_HC_DC2,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_dcdc3_resources[] = {
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{
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.start = WM831X_DC3_CONTROL_1,
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.end = WM831X_DC3_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_DC3,
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.end = WM831X_IRQ_UV_DC3,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_dcdc4_resources[] = {
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{
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.start = WM831X_DC4_CONTROL,
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.end = WM831X_DC4_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_DC4,
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.end = WM831X_IRQ_UV_DC4,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm8320_dcdc4_buck_resources[] = {
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{
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.start = WM831X_DC4_CONTROL,
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.end = WM832X_DC4_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_DC4,
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.end = WM831X_IRQ_UV_DC4,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_gpio_resources[] = {
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{
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.start = WM831X_IRQ_GPIO_1,
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.end = WM831X_IRQ_GPIO_16,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_isink1_resources[] = {
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{
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.start = WM831X_CURRENT_SINK_1,
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.end = WM831X_CURRENT_SINK_1,
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.flags = IORESOURCE_IO,
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},
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{
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.start = WM831X_IRQ_CS1,
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.end = WM831X_IRQ_CS1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_isink2_resources[] = {
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{
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.start = WM831X_CURRENT_SINK_2,
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.end = WM831X_CURRENT_SINK_2,
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.flags = IORESOURCE_IO,
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},
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{
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.start = WM831X_IRQ_CS2,
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.end = WM831X_IRQ_CS2,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo1_resources[] = {
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{
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.start = WM831X_LDO1_CONTROL,
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.end = WM831X_LDO1_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO1,
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.end = WM831X_IRQ_UV_LDO1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo2_resources[] = {
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{
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.start = WM831X_LDO2_CONTROL,
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.end = WM831X_LDO2_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO2,
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.end = WM831X_IRQ_UV_LDO2,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo3_resources[] = {
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{
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.start = WM831X_LDO3_CONTROL,
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.end = WM831X_LDO3_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO3,
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.end = WM831X_IRQ_UV_LDO3,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo4_resources[] = {
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{
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.start = WM831X_LDO4_CONTROL,
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.end = WM831X_LDO4_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO4,
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.end = WM831X_IRQ_UV_LDO4,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo5_resources[] = {
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{
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.start = WM831X_LDO5_CONTROL,
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.end = WM831X_LDO5_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO5,
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.end = WM831X_IRQ_UV_LDO5,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo6_resources[] = {
|
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{
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.start = WM831X_LDO6_CONTROL,
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.end = WM831X_LDO6_SLEEP_CONTROL,
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO6,
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.end = WM831X_IRQ_UV_LDO6,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo7_resources[] = {
|
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{
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.start = WM831X_LDO7_CONTROL,
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.end = WM831X_LDO7_SLEEP_CONTROL,
|
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
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.start = WM831X_IRQ_UV_LDO7,
|
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.end = WM831X_IRQ_UV_LDO7,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo8_resources[] = {
|
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{
|
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.start = WM831X_LDO8_CONTROL,
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.end = WM831X_LDO8_SLEEP_CONTROL,
|
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
|
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.start = WM831X_IRQ_UV_LDO8,
|
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.end = WM831X_IRQ_UV_LDO8,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo9_resources[] = {
|
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{
|
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.start = WM831X_LDO9_CONTROL,
|
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.end = WM831X_LDO9_SLEEP_CONTROL,
|
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.flags = IORESOURCE_IO,
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},
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{
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.name = "UV",
|
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.start = WM831X_IRQ_UV_LDO9,
|
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.end = WM831X_IRQ_UV_LDO9,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource wm831x_ldo10_resources[] = {
|
|
{
|
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.start = WM831X_LDO10_CONTROL,
|
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.end = WM831X_LDO10_SLEEP_CONTROL,
|
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.flags = IORESOURCE_IO,
|
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},
|
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{
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.name = "UV",
|
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.start = WM831X_IRQ_UV_LDO10,
|
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.end = WM831X_IRQ_UV_LDO10,
|
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.flags = IORESOURCE_IRQ,
|
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},
|
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};
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|
|
static struct resource wm831x_ldo11_resources[] = {
|
|
{
|
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.start = WM831X_LDO11_ON_CONTROL,
|
|
.end = WM831X_LDO11_SLEEP_CONTROL,
|
|
.flags = IORESOURCE_IO,
|
|
},
|
|
};
|
|
|
|
static struct resource wm831x_on_resources[] = {
|
|
{
|
|
.start = WM831X_IRQ_ON,
|
|
.end = WM831X_IRQ_ON,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
|
|
static struct resource wm831x_power_resources[] = {
|
|
{
|
|
.name = "SYSLO",
|
|
.start = WM831X_IRQ_PPM_SYSLO,
|
|
.end = WM831X_IRQ_PPM_SYSLO,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "PWR SRC",
|
|
.start = WM831X_IRQ_PPM_PWR_SRC,
|
|
.end = WM831X_IRQ_PPM_PWR_SRC,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "USB CURR",
|
|
.start = WM831X_IRQ_PPM_USB_CURR,
|
|
.end = WM831X_IRQ_PPM_USB_CURR,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "BATT HOT",
|
|
.start = WM831X_IRQ_CHG_BATT_HOT,
|
|
.end = WM831X_IRQ_CHG_BATT_HOT,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "BATT COLD",
|
|
.start = WM831X_IRQ_CHG_BATT_COLD,
|
|
.end = WM831X_IRQ_CHG_BATT_COLD,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "BATT FAIL",
|
|
.start = WM831X_IRQ_CHG_BATT_FAIL,
|
|
.end = WM831X_IRQ_CHG_BATT_FAIL,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "OV",
|
|
.start = WM831X_IRQ_CHG_OV,
|
|
.end = WM831X_IRQ_CHG_OV,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "END",
|
|
.start = WM831X_IRQ_CHG_END,
|
|
.end = WM831X_IRQ_CHG_END,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "TO",
|
|
.start = WM831X_IRQ_CHG_TO,
|
|
.end = WM831X_IRQ_CHG_TO,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "MODE",
|
|
.start = WM831X_IRQ_CHG_MODE,
|
|
.end = WM831X_IRQ_CHG_MODE,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "START",
|
|
.start = WM831X_IRQ_CHG_START,
|
|
.end = WM831X_IRQ_CHG_START,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource wm831x_rtc_resources[] = {
|
|
{
|
|
.name = "PER",
|
|
.start = WM831X_IRQ_RTC_PER,
|
|
.end = WM831X_IRQ_RTC_PER,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "ALM",
|
|
.start = WM831X_IRQ_RTC_ALM,
|
|
.end = WM831X_IRQ_RTC_ALM,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource wm831x_status1_resources[] = {
|
|
{
|
|
.start = WM831X_STATUS_LED_1,
|
|
.end = WM831X_STATUS_LED_1,
|
|
.flags = IORESOURCE_IO,
|
|
},
|
|
};
|
|
|
|
static struct resource wm831x_status2_resources[] = {
|
|
{
|
|
.start = WM831X_STATUS_LED_2,
|
|
.end = WM831X_STATUS_LED_2,
|
|
.flags = IORESOURCE_IO,
|
|
},
|
|
};
|
|
|
|
static struct resource wm831x_touch_resources[] = {
|
|
{
|
|
.name = "TCHPD",
|
|
.start = WM831X_IRQ_TCHPD,
|
|
.end = WM831X_IRQ_TCHPD,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "TCHDATA",
|
|
.start = WM831X_IRQ_TCHDATA,
|
|
.end = WM831X_IRQ_TCHDATA,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource wm831x_wdt_resources[] = {
|
|
{
|
|
.start = WM831X_IRQ_WDOG_TO,
|
|
.end = WM831X_IRQ_WDOG_TO,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell wm8310_devs[] = {
|
|
{
|
|
.name = "wm831x-backup",
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
|
|
.resources = wm831x_dcdc1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
|
|
.resources = wm831x_dcdc2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckp",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
|
|
.resources = wm831x_dcdc3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-boostp",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
|
|
.resources = wm831x_dcdc4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-clk",
|
|
},
|
|
{
|
|
.name = "wm831x-epe",
|
|
.id = 1,
|
|
},
|
|
{
|
|
.name = "wm831x-epe",
|
|
.id = 2,
|
|
},
|
|
{
|
|
.name = "wm831x-gpio",
|
|
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
|
|
.resources = wm831x_gpio_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-hwmon",
|
|
},
|
|
{
|
|
.name = "wm831x-isink",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
|
|
.resources = wm831x_isink1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-isink",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
|
|
.resources = wm831x_isink2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
|
|
.resources = wm831x_ldo1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
|
|
.resources = wm831x_ldo2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
|
|
.resources = wm831x_ldo3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
|
|
.resources = wm831x_ldo4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 5,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
|
|
.resources = wm831x_ldo5_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 6,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
|
|
.resources = wm831x_ldo6_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 7,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
|
|
.resources = wm831x_ldo7_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 8,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
|
|
.resources = wm831x_ldo8_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 9,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
|
|
.resources = wm831x_ldo9_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 10,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
|
|
.resources = wm831x_ldo10_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-alive-ldo",
|
|
.id = 11,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
|
|
.resources = wm831x_ldo11_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-on",
|
|
.num_resources = ARRAY_SIZE(wm831x_on_resources),
|
|
.resources = wm831x_on_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-power",
|
|
.num_resources = ARRAY_SIZE(wm831x_power_resources),
|
|
.resources = wm831x_power_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
|
|
.resources = wm831x_status1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
|
|
.resources = wm831x_status2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-watchdog",
|
|
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
|
|
.resources = wm831x_wdt_resources,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell wm8311_devs[] = {
|
|
{
|
|
.name = "wm831x-backup",
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
|
|
.resources = wm831x_dcdc1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
|
|
.resources = wm831x_dcdc2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckp",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
|
|
.resources = wm831x_dcdc3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-boostp",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
|
|
.resources = wm831x_dcdc4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-clk",
|
|
},
|
|
{
|
|
.name = "wm831x-epe",
|
|
.id = 1,
|
|
},
|
|
{
|
|
.name = "wm831x-epe",
|
|
.id = 2,
|
|
},
|
|
{
|
|
.name = "wm831x-gpio",
|
|
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
|
|
.resources = wm831x_gpio_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-hwmon",
|
|
},
|
|
{
|
|
.name = "wm831x-isink",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
|
|
.resources = wm831x_isink1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-isink",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
|
|
.resources = wm831x_isink2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
|
|
.resources = wm831x_ldo1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
|
|
.resources = wm831x_ldo2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
|
|
.resources = wm831x_ldo3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
|
|
.resources = wm831x_ldo4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 5,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
|
|
.resources = wm831x_ldo5_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 7,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
|
|
.resources = wm831x_ldo7_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-alive-ldo",
|
|
.id = 11,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
|
|
.resources = wm831x_ldo11_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-on",
|
|
.num_resources = ARRAY_SIZE(wm831x_on_resources),
|
|
.resources = wm831x_on_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-power",
|
|
.num_resources = ARRAY_SIZE(wm831x_power_resources),
|
|
.resources = wm831x_power_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
|
|
.resources = wm831x_status1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
|
|
.resources = wm831x_status2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-watchdog",
|
|
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
|
|
.resources = wm831x_wdt_resources,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell wm8312_devs[] = {
|
|
{
|
|
.name = "wm831x-backup",
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
|
|
.resources = wm831x_dcdc1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
|
|
.resources = wm831x_dcdc2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckp",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
|
|
.resources = wm831x_dcdc3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-boostp",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
|
|
.resources = wm831x_dcdc4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-clk",
|
|
},
|
|
{
|
|
.name = "wm831x-epe",
|
|
.id = 1,
|
|
},
|
|
{
|
|
.name = "wm831x-epe",
|
|
.id = 2,
|
|
},
|
|
{
|
|
.name = "wm831x-gpio",
|
|
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
|
|
.resources = wm831x_gpio_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-hwmon",
|
|
},
|
|
{
|
|
.name = "wm831x-isink",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
|
|
.resources = wm831x_isink1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-isink",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
|
|
.resources = wm831x_isink2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
|
|
.resources = wm831x_ldo1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
|
|
.resources = wm831x_ldo2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
|
|
.resources = wm831x_ldo3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
|
|
.resources = wm831x_ldo4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 5,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
|
|
.resources = wm831x_ldo5_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 6,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
|
|
.resources = wm831x_ldo6_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 7,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
|
|
.resources = wm831x_ldo7_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 8,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
|
|
.resources = wm831x_ldo8_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 9,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
|
|
.resources = wm831x_ldo9_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 10,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
|
|
.resources = wm831x_ldo10_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-alive-ldo",
|
|
.id = 11,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
|
|
.resources = wm831x_ldo11_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-on",
|
|
.num_resources = ARRAY_SIZE(wm831x_on_resources),
|
|
.resources = wm831x_on_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-power",
|
|
.num_resources = ARRAY_SIZE(wm831x_power_resources),
|
|
.resources = wm831x_power_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
|
|
.resources = wm831x_status1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
|
|
.resources = wm831x_status2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-watchdog",
|
|
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
|
|
.resources = wm831x_wdt_resources,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell wm8320_devs[] = {
|
|
{
|
|
.name = "wm831x-backup",
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
|
|
.resources = wm831x_dcdc1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckv",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
|
|
.resources = wm831x_dcdc2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckp",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
|
|
.resources = wm831x_dcdc3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-buckp",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
|
|
.resources = wm8320_dcdc4_buck_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-clk",
|
|
},
|
|
{
|
|
.name = "wm831x-gpio",
|
|
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
|
|
.resources = wm831x_gpio_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-hwmon",
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
|
|
.resources = wm831x_ldo1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
|
|
.resources = wm831x_ldo2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
|
|
.resources = wm831x_ldo3_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 4,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
|
|
.resources = wm831x_ldo4_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 5,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
|
|
.resources = wm831x_ldo5_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-ldo",
|
|
.id = 6,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
|
|
.resources = wm831x_ldo6_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 7,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
|
|
.resources = wm831x_ldo7_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 8,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
|
|
.resources = wm831x_ldo8_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 9,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
|
|
.resources = wm831x_ldo9_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-aldo",
|
|
.id = 10,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
|
|
.resources = wm831x_ldo10_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-alive-ldo",
|
|
.id = 11,
|
|
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
|
|
.resources = wm831x_ldo11_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-on",
|
|
.num_resources = ARRAY_SIZE(wm831x_on_resources),
|
|
.resources = wm831x_on_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
|
|
.resources = wm831x_status1_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-status",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
|
|
.resources = wm831x_status2_resources,
|
|
},
|
|
{
|
|
.name = "wm831x-watchdog",
|
|
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
|
|
.resources = wm831x_wdt_resources,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell touch_devs[] = {
|
|
{
|
|
.name = "wm831x-touch",
|
|
.num_resources = ARRAY_SIZE(wm831x_touch_resources),
|
|
.resources = wm831x_touch_resources,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell rtc_devs[] = {
|
|
{
|
|
.name = "wm831x-rtc",
|
|
.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
|
|
.resources = wm831x_rtc_resources,
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell backlight_devs[] = {
|
|
{
|
|
.name = "wm831x-backlight",
|
|
},
|
|
};
|
|
|
|
struct regmap_config wm831x_regmap_config = {
|
|
.reg_bits = 16,
|
|
.val_bits = 16,
|
|
};
|
|
EXPORT_SYMBOL_GPL(wm831x_regmap_config);
|
|
|
|
/*
|
|
* Instantiate the generic non-control parts of the device.
|
|
*/
|
|
int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
|
|
{
|
|
struct wm831x_pdata *pdata = wm831x->dev->platform_data;
|
|
int rev, wm831x_num;
|
|
enum wm831x_parent parent;
|
|
int ret, i;
|
|
|
|
mutex_init(&wm831x->io_lock);
|
|
mutex_init(&wm831x->key_lock);
|
|
dev_set_drvdata(wm831x->dev, wm831x);
|
|
|
|
ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
|
|
if (ret < 0) {
|
|
dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
switch (ret) {
|
|
case 0x6204:
|
|
case 0x6246:
|
|
break;
|
|
default:
|
|
dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
|
|
ret = -EINVAL;
|
|
goto err_regmap;
|
|
}
|
|
|
|
ret = wm831x_reg_read(wm831x, WM831X_REVISION);
|
|
if (ret < 0) {
|
|
dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
|
|
|
|
ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
|
|
if (ret < 0) {
|
|
dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
|
|
/* Some engineering samples do not have the ID set, rely on
|
|
* the device being registered correctly.
|
|
*/
|
|
if (ret == 0) {
|
|
dev_info(wm831x->dev, "Device is an engineering sample\n");
|
|
ret = id;
|
|
}
|
|
|
|
switch (ret) {
|
|
case WM8310:
|
|
parent = WM8310;
|
|
wm831x->num_gpio = 16;
|
|
wm831x->charger_irq_wake = 1;
|
|
if (rev > 0) {
|
|
wm831x->has_gpio_ena = 1;
|
|
wm831x->has_cs_sts = 1;
|
|
}
|
|
|
|
dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
case WM8311:
|
|
parent = WM8311;
|
|
wm831x->num_gpio = 16;
|
|
wm831x->charger_irq_wake = 1;
|
|
if (rev > 0) {
|
|
wm831x->has_gpio_ena = 1;
|
|
wm831x->has_cs_sts = 1;
|
|
}
|
|
|
|
dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
case WM8312:
|
|
parent = WM8312;
|
|
wm831x->num_gpio = 16;
|
|
wm831x->charger_irq_wake = 1;
|
|
if (rev > 0) {
|
|
wm831x->has_gpio_ena = 1;
|
|
wm831x->has_cs_sts = 1;
|
|
}
|
|
|
|
dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
case WM8320:
|
|
parent = WM8320;
|
|
wm831x->num_gpio = 12;
|
|
dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
case WM8321:
|
|
parent = WM8321;
|
|
wm831x->num_gpio = 12;
|
|
dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
case WM8325:
|
|
parent = WM8325;
|
|
wm831x->num_gpio = 12;
|
|
dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
case WM8326:
|
|
parent = WM8326;
|
|
wm831x->num_gpio = 12;
|
|
dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
|
|
break;
|
|
|
|
default:
|
|
dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
|
|
ret = -EINVAL;
|
|
goto err_regmap;
|
|
}
|
|
|
|
/* This will need revisiting in future but is OK for all
|
|
* current parts.
|
|
*/
|
|
if (parent != id)
|
|
dev_warn(wm831x->dev, "Device was registered as a WM%lx\n",
|
|
id);
|
|
|
|
/* Bootstrap the user key */
|
|
ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
|
|
if (ret < 0) {
|
|
dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
if (ret != 0) {
|
|
dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
|
|
ret);
|
|
wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
|
|
}
|
|
wm831x->locked = 1;
|
|
|
|
if (pdata && pdata->pre_init) {
|
|
ret = pdata->pre_init(wm831x);
|
|
if (ret != 0) {
|
|
dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
|
|
goto err_regmap;
|
|
}
|
|
}
|
|
|
|
if (pdata) {
|
|
for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
|
|
if (!pdata->gpio_defaults[i])
|
|
continue;
|
|
|
|
wm831x_reg_write(wm831x,
|
|
WM831X_GPIO1_CONTROL + i,
|
|
pdata->gpio_defaults[i] & 0xffff);
|
|
}
|
|
}
|
|
|
|
/* Multiply by 10 as we have many subdevices of the same type */
|
|
if (pdata && pdata->wm831x_num)
|
|
wm831x_num = pdata->wm831x_num * 10;
|
|
else
|
|
wm831x_num = -1;
|
|
|
|
ret = wm831x_irq_init(wm831x, irq);
|
|
if (ret != 0)
|
|
goto err_regmap;
|
|
|
|
wm831x_auxadc_init(wm831x);
|
|
|
|
/* The core device is up, instantiate the subdevices. */
|
|
switch (parent) {
|
|
case WM8310:
|
|
ret = mfd_add_devices(wm831x->dev, wm831x_num,
|
|
wm8310_devs, ARRAY_SIZE(wm8310_devs),
|
|
NULL, wm831x->irq_base);
|
|
break;
|
|
|
|
case WM8311:
|
|
ret = mfd_add_devices(wm831x->dev, wm831x_num,
|
|
wm8311_devs, ARRAY_SIZE(wm8311_devs),
|
|
NULL, wm831x->irq_base);
|
|
if (!pdata || !pdata->disable_touch)
|
|
mfd_add_devices(wm831x->dev, wm831x_num,
|
|
touch_devs, ARRAY_SIZE(touch_devs),
|
|
NULL, wm831x->irq_base);
|
|
break;
|
|
|
|
case WM8312:
|
|
ret = mfd_add_devices(wm831x->dev, wm831x_num,
|
|
wm8312_devs, ARRAY_SIZE(wm8312_devs),
|
|
NULL, wm831x->irq_base);
|
|
if (!pdata || !pdata->disable_touch)
|
|
mfd_add_devices(wm831x->dev, wm831x_num,
|
|
touch_devs, ARRAY_SIZE(touch_devs),
|
|
NULL, wm831x->irq_base);
|
|
break;
|
|
|
|
case WM8320:
|
|
case WM8321:
|
|
case WM8325:
|
|
case WM8326:
|
|
ret = mfd_add_devices(wm831x->dev, wm831x_num,
|
|
wm8320_devs, ARRAY_SIZE(wm8320_devs),
|
|
NULL, wm831x->irq_base);
|
|
break;
|
|
|
|
default:
|
|
/* If this happens the bus probe function is buggy */
|
|
BUG();
|
|
}
|
|
|
|
if (ret != 0) {
|
|
dev_err(wm831x->dev, "Failed to add children\n");
|
|
goto err_irq;
|
|
}
|
|
|
|
/* The RTC can only be used if the 32.768kHz crystal is
|
|
* enabled; this can't be controlled by software at runtime.
|
|
*/
|
|
ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
|
|
if (ret < 0) {
|
|
dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
|
|
goto err_irq;
|
|
}
|
|
|
|
if (ret & WM831X_XTAL_ENA) {
|
|
ret = mfd_add_devices(wm831x->dev, wm831x_num,
|
|
rtc_devs, ARRAY_SIZE(rtc_devs),
|
|
NULL, wm831x->irq_base);
|
|
if (ret != 0) {
|
|
dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
|
|
goto err_irq;
|
|
}
|
|
} else {
|
|
dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
|
|
}
|
|
|
|
if (pdata && pdata->backlight) {
|
|
/* Treat errors as non-critical */
|
|
ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
|
|
ARRAY_SIZE(backlight_devs), NULL,
|
|
wm831x->irq_base);
|
|
if (ret < 0)
|
|
dev_err(wm831x->dev, "Failed to add backlight: %d\n",
|
|
ret);
|
|
}
|
|
|
|
wm831x_otp_init(wm831x);
|
|
|
|
if (pdata && pdata->post_init) {
|
|
ret = pdata->post_init(wm831x);
|
|
if (ret != 0) {
|
|
dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
|
|
goto err_irq;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_irq:
|
|
wm831x_irq_exit(wm831x);
|
|
err_regmap:
|
|
mfd_remove_devices(wm831x->dev);
|
|
regmap_exit(wm831x->regmap);
|
|
kfree(wm831x);
|
|
return ret;
|
|
}
|
|
|
|
void wm831x_device_exit(struct wm831x *wm831x)
|
|
{
|
|
wm831x_otp_exit(wm831x);
|
|
mfd_remove_devices(wm831x->dev);
|
|
if (wm831x->irq_base)
|
|
free_irq(wm831x->irq_base + WM831X_IRQ_AUXADC_DATA, wm831x);
|
|
wm831x_irq_exit(wm831x);
|
|
regmap_exit(wm831x->regmap);
|
|
kfree(wm831x);
|
|
}
|
|
|
|
int wm831x_device_suspend(struct wm831x *wm831x)
|
|
{
|
|
int reg, mask;
|
|
|
|
/* If the charger IRQs are a wake source then make sure we ack
|
|
* them even if they're not actively being used (eg, no power
|
|
* driver or no IRQ line wired up) then acknowledge the
|
|
* interrupts otherwise suspend won't last very long.
|
|
*/
|
|
if (wm831x->charger_irq_wake) {
|
|
reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
|
|
|
|
mask = WM831X_CHG_BATT_HOT_EINT |
|
|
WM831X_CHG_BATT_COLD_EINT |
|
|
WM831X_CHG_BATT_FAIL_EINT |
|
|
WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
|
|
WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
|
|
WM831X_CHG_START_EINT;
|
|
|
|
/* If any of the interrupts are masked read the statuses */
|
|
if (reg & mask)
|
|
reg = wm831x_reg_read(wm831x,
|
|
WM831X_INTERRUPT_STATUS_2);
|
|
|
|
if (reg & mask) {
|
|
dev_info(wm831x->dev,
|
|
"Acknowledging masked charger IRQs: %x\n",
|
|
reg & mask);
|
|
wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
|
|
reg & mask);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
MODULE_DESCRIPTION("Core support for the WM831X AudioPlus PMIC");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Mark Brown");
|