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linux/drivers/mfd/ab5500-core.c
Paul Gortmaker 3b8ce3aed9 mfd: fix build failures in recently added ab5500 code 
These files had implicit dependencies on modular support
which now show up as build failures with the module cleanup
work merged to mainline.

Reported-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-11-07 21:45:14 -05:00

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/*
* Copyright (C) 2007-2011 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Low-level core for exclusive access to the AB5500 IC on the I2C bus
* and some basic chip-configuration.
* Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
* Author: Mattias Wallin <mattias.wallin@stericsson.com>
* Author: Rickard Andersson <rickard.andersson@stericsson.com>
* Author: Karl Komierowski <karl.komierowski@stericsson.com>
* Author: Bibek Basu <bibek.basu@stericsson.com>
*
* TODO: Event handling with irq_chip. Waiting for PRCMU fw support.
*/
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/random.h>
#include <linux/mfd/ab5500/ab5500.h>
#include <linux/mfd/abx500.h>
#include <linux/list.h>
#include <linux/bitops.h>
#include <linux/spinlock.h>
#include <linux/mfd/core.h>
#include <linux/version.h>
#include <linux/mfd/db5500-prcmu.h>
#include "ab5500-core.h"
#include "ab5500-debugfs.h"
#define AB5500_NUM_EVENT_REG 23
#define AB5500_IT_LATCH0_REG 0x40
#define AB5500_IT_MASK0_REG 0x60
/*
* Permissible register ranges for reading and writing per device and bank.
*
* The ranges must be listed in increasing address order, and no overlaps are
* allowed. It is assumed that write permission implies read permission
* (i.e. only RO and RW permissions should be used). Ranges with write
* permission must not be split up.
*/
#define NO_RANGE {.count = 0, .range = NULL,}
static struct ab5500_i2c_banks ab5500_bank_ranges[AB5500_NUM_DEVICES] = {
[AB5500_DEVID_USB] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_USB,
.nranges = 12,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x01,
.last = 0x01,
.perm = AB5500_PERM_RW,
},
{
.first = 0x80,
.last = 0x83,
.perm = AB5500_PERM_RW,
},
{
.first = 0x87,
.last = 0x8A,
.perm = AB5500_PERM_RW,
},
{
.first = 0x8B,
.last = 0x8B,
.perm = AB5500_PERM_RO,
},
{
.first = 0x91,
.last = 0x92,
.perm = AB5500_PERM_RO,
},
{
.first = 0x93,
.last = 0x93,
.perm = AB5500_PERM_RW,
},
{
.first = 0x94,
.last = 0x94,
.perm = AB5500_PERM_RO,
},
{
.first = 0xA8,
.last = 0xB0,
.perm = AB5500_PERM_RO,
},
{
.first = 0xB2,
.last = 0xB2,
.perm = AB5500_PERM_RO,
},
{
.first = 0xB4,
.last = 0xBC,
.perm = AB5500_PERM_RO,
},
{
.first = 0xBF,
.last = 0xBF,
.perm = AB5500_PERM_RO,
},
{
.first = 0xC1,
.last = 0xC5,
.perm = AB5500_PERM_RO,
},
},
},
},
},
[AB5500_DEVID_ADC] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_ADC,
.nranges = 6,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x1F,
.last = 0x22,
.perm = AB5500_PERM_RO,
},
{
.first = 0x23,
.last = 0x24,
.perm = AB5500_PERM_RW,
},
{
.first = 0x26,
.last = 0x2D,
.perm = AB5500_PERM_RO,
},
{
.first = 0x2F,
.last = 0x34,
.perm = AB5500_PERM_RW,
},
{
.first = 0x37,
.last = 0x57,
.perm = AB5500_PERM_RW,
},
{
.first = 0x58,
.last = 0x58,
.perm = AB5500_PERM_RO,
},
},
},
},
},
[AB5500_DEVID_LEDS] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_LED,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x0C,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_VIDEO] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_VDENC,
.nranges = 12,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x08,
.perm = AB5500_PERM_RW,
},
{
.first = 0x09,
.last = 0x09,
.perm = AB5500_PERM_RO,
},
{
.first = 0x0A,
.last = 0x12,
.perm = AB5500_PERM_RW,
},
{
.first = 0x15,
.last = 0x19,
.perm = AB5500_PERM_RW,
},
{
.first = 0x1B,
.last = 0x21,
.perm = AB5500_PERM_RW,
},
{
.first = 0x27,
.last = 0x2C,
.perm = AB5500_PERM_RW,
},
{
.first = 0x41,
.last = 0x41,
.perm = AB5500_PERM_RW,
},
{
.first = 0x45,
.last = 0x5B,
.perm = AB5500_PERM_RW,
},
{
.first = 0x5D,
.last = 0x5D,
.perm = AB5500_PERM_RW,
},
{
.first = 0x69,
.last = 0x69,
.perm = AB5500_PERM_RW,
},
{
.first = 0x6C,
.last = 0x6D,
.perm = AB5500_PERM_RW,
},
{
.first = 0x80,
.last = 0x81,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_REGULATORS] = {
.nbanks = 2,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_STARTUP,
.nranges = 12,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x01,
.perm = AB5500_PERM_RW,
},
{
.first = 0x1F,
.last = 0x1F,
.perm = AB5500_PERM_RW,
},
{
.first = 0x2E,
.last = 0x2E,
.perm = AB5500_PERM_RO,
},
{
.first = 0x2F,
.last = 0x30,
.perm = AB5500_PERM_RW,
},
{
.first = 0x50,
.last = 0x51,
.perm = AB5500_PERM_RW,
},
{
.first = 0x60,
.last = 0x61,
.perm = AB5500_PERM_RW,
},
{
.first = 0x66,
.last = 0x8A,
.perm = AB5500_PERM_RW,
},
{
.first = 0x8C,
.last = 0x96,
.perm = AB5500_PERM_RW,
},
{
.first = 0xAA,
.last = 0xB4,
.perm = AB5500_PERM_RW,
},
{
.first = 0xB7,
.last = 0xBF,
.perm = AB5500_PERM_RW,
},
{
.first = 0xC1,
.last = 0xCA,
.perm = AB5500_PERM_RW,
},
{
.first = 0xD3,
.last = 0xE0,
.perm = AB5500_PERM_RW,
},
},
},
{
.bankid = AB5500_BANK_SIM_USBSIM,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x13,
.last = 0x19,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_SIM] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_SIM_USBSIM,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x13,
.last = 0x19,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_RTC] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_RTC,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x04,
.perm = AB5500_PERM_RW,
},
{
.first = 0x06,
.last = 0x0C,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_CHARGER] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_CHG,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x11,
.last = 0x11,
.perm = AB5500_PERM_RO,
},
{
.first = 0x12,
.last = 0x1B,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_FUELGAUGE] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_FG_BATTCOM_ACC,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x0B,
.perm = AB5500_PERM_RO,
},
{
.first = 0x0C,
.last = 0x10,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_VIBRATOR] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_VIBRA,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x10,
.last = 0x13,
.perm = AB5500_PERM_RW,
},
{
.first = 0xFE,
.last = 0xFE,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_CODEC] = {
.nbanks = 1,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_AUDIO_HEADSETUSB,
.nranges = 2,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x00,
.last = 0x48,
.perm = AB5500_PERM_RW,
},
{
.first = 0xEB,
.last = 0xFB,
.perm = AB5500_PERM_RW,
},
},
},
},
},
[AB5500_DEVID_POWER] = {
.nbanks = 2,
.bank = (struct ab5500_i2c_ranges []) {
{
.bankid = AB5500_BANK_STARTUP,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x30,
.last = 0x30,
.perm = AB5500_PERM_RW,
},
},
},
{
.bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
.nranges = 1,
.range = (struct ab5500_reg_range[]) {
{
.first = 0x01,
.last = 0x01,
.perm = AB5500_PERM_RW,
},
},
},
},
},
};
#define AB5500_IRQ(bank, bit) ((bank) * 8 + (bit))
/* I appologize for the resource names beeing a mix of upper case
* and lower case but I want them to be exact as the documentation */
static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = {
[AB5500_DEVID_LEDS] = {
.name = "ab5500-leds",
.id = AB5500_DEVID_LEDS,
},
[AB5500_DEVID_POWER] = {
.name = "ab5500-power",
.id = AB5500_DEVID_POWER,
},
[AB5500_DEVID_REGULATORS] = {
.name = "ab5500-regulator",
.id = AB5500_DEVID_REGULATORS,
},
[AB5500_DEVID_SIM] = {
.name = "ab5500-sim",
.id = AB5500_DEVID_SIM,
.num_resources = 1,
.resources = (struct resource[]) {
{
.name = "SIMOFF",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(2, 0), /*rising*/
.end = AB5500_IRQ(2, 1), /*falling*/
},
},
},
[AB5500_DEVID_RTC] = {
.name = "ab5500-rtc",
.id = AB5500_DEVID_RTC,
.num_resources = 1,
.resources = (struct resource[]) {
{
.name = "RTC_Alarm",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(1, 7),
.end = AB5500_IRQ(1, 7),
}
},
},
[AB5500_DEVID_CHARGER] = {
.name = "ab5500-charger",
.id = AB5500_DEVID_CHARGER,
},
[AB5500_DEVID_ADC] = {
.name = "ab5500-adc",
.id = AB5500_DEVID_ADC,
.num_resources = 10,
.resources = (struct resource[]) {
{
.name = "TRIGGER-0",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 0),
.end = AB5500_IRQ(0, 0),
},
{
.name = "TRIGGER-1",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 1),
.end = AB5500_IRQ(0, 1),
},
{
.name = "TRIGGER-2",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 2),
.end = AB5500_IRQ(0, 2),
},
{
.name = "TRIGGER-3",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 3),
.end = AB5500_IRQ(0, 3),
},
{
.name = "TRIGGER-4",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 4),
.end = AB5500_IRQ(0, 4),
},
{
.name = "TRIGGER-5",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 5),
.end = AB5500_IRQ(0, 5),
},
{
.name = "TRIGGER-6",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 6),
.end = AB5500_IRQ(0, 6),
},
{
.name = "TRIGGER-7",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 7),
.end = AB5500_IRQ(0, 7),
},
{
.name = "TRIGGER-VBAT",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 8),
.end = AB5500_IRQ(0, 8),
},
{
.name = "TRIGGER-VBAT-TXON",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(0, 9),
.end = AB5500_IRQ(0, 9),
},
},
},
[AB5500_DEVID_FUELGAUGE] = {
.name = "ab5500-fuelgauge",
.id = AB5500_DEVID_FUELGAUGE,
.num_resources = 6,
.resources = (struct resource[]) {
{
.name = "Batt_attach",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(7, 5),
.end = AB5500_IRQ(7, 5),
},
{
.name = "Batt_removal",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(7, 6),
.end = AB5500_IRQ(7, 6),
},
{
.name = "UART_framing",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(7, 7),
.end = AB5500_IRQ(7, 7),
},
{
.name = "UART_overrun",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 0),
.end = AB5500_IRQ(8, 0),
},
{
.name = "UART_Rdy_RX",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 1),
.end = AB5500_IRQ(8, 1),
},
{
.name = "UART_Rdy_TX",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 2),
.end = AB5500_IRQ(8, 2),
},
},
},
[AB5500_DEVID_VIBRATOR] = {
.name = "ab5500-vibrator",
.id = AB5500_DEVID_VIBRATOR,
},
[AB5500_DEVID_CODEC] = {
.name = "ab5500-codec",
.id = AB5500_DEVID_CODEC,
.num_resources = 3,
.resources = (struct resource[]) {
{
.name = "audio_spkr1_ovc",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 5),
.end = AB5500_IRQ(9, 5),
},
{
.name = "audio_plllocked",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 6),
.end = AB5500_IRQ(9, 6),
},
{
.name = "audio_spkr2_ovc",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(17, 4),
.end = AB5500_IRQ(17, 4),
},
},
},
[AB5500_DEVID_USB] = {
.name = "ab5500-usb",
.id = AB5500_DEVID_USB,
.num_resources = 36,
.resources = (struct resource[]) {
{
.name = "Link_Update",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(22, 1),
.end = AB5500_IRQ(22, 1),
},
{
.name = "DCIO",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 3),
.end = AB5500_IRQ(8, 4),
},
{
.name = "VBUS_R",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 5),
.end = AB5500_IRQ(8, 5),
},
{
.name = "VBUS_F",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 6),
.end = AB5500_IRQ(8, 6),
},
{
.name = "CHGstate_10_PCVBUSchg",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(8, 7),
.end = AB5500_IRQ(8, 7),
},
{
.name = "DCIOreverse_ovc",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 0),
.end = AB5500_IRQ(9, 0),
},
{
.name = "USBCharDetDone",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 1),
.end = AB5500_IRQ(9, 1),
},
{
.name = "DCIO_no_limit",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 2),
.end = AB5500_IRQ(9, 2),
},
{
.name = "USB_suspend",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 3),
.end = AB5500_IRQ(9, 3),
},
{
.name = "DCIOreverse_fwdcurrent",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 4),
.end = AB5500_IRQ(9, 4),
},
{
.name = "Vbus_Imeasmax_change",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(9, 5),
.end = AB5500_IRQ(9, 6),
},
{
.name = "OVV",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 5),
.end = AB5500_IRQ(14, 5),
},
{
.name = "USBcharging_NOTok",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(15, 3),
.end = AB5500_IRQ(15, 3),
},
{
.name = "usb_adp_sensoroff",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(15, 6),
.end = AB5500_IRQ(15, 6),
},
{
.name = "usb_adp_probeplug",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(15, 7),
.end = AB5500_IRQ(15, 7),
},
{
.name = "usb_adp_sinkerror",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(16, 0),
.end = AB5500_IRQ(16, 6),
},
{
.name = "usb_adp_sourceerror",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(16, 1),
.end = AB5500_IRQ(16, 1),
},
{
.name = "usb_idgnd_r",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(16, 2),
.end = AB5500_IRQ(16, 2),
},
{
.name = "usb_idgnd_f",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(16, 3),
.end = AB5500_IRQ(16, 3),
},
{
.name = "usb_iddetR1",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(16, 4),
.end = AB5500_IRQ(16, 5),
},
{
.name = "usb_iddetR2",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(16, 6),
.end = AB5500_IRQ(16, 7),
},
{
.name = "usb_iddetR3",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(17, 0),
.end = AB5500_IRQ(17, 1),
},
{
.name = "usb_iddetR4",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(17, 2),
.end = AB5500_IRQ(17, 3),
},
{
.name = "CharTempWindowOk",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(17, 7),
.end = AB5500_IRQ(18, 0),
},
{
.name = "USB_SprDetect",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(18, 1),
.end = AB5500_IRQ(18, 1),
},
{
.name = "usb_adp_probe_unplug",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(18, 2),
.end = AB5500_IRQ(18, 2),
},
{
.name = "VBUSChDrop",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(18, 3),
.end = AB5500_IRQ(18, 4),
},
{
.name = "dcio_char_rec_done",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(18, 5),
.end = AB5500_IRQ(18, 5),
},
{
.name = "Charging_stopped_by_temp",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(18, 6),
.end = AB5500_IRQ(18, 6),
},
{
.name = "CHGstate_11_SafeModeVBUS",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 1),
.end = AB5500_IRQ(21, 2),
},
{
.name = "CHGstate_12_comletedVBUS",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 2),
.end = AB5500_IRQ(21, 2),
},
{
.name = "CHGstate_13_completedVBUS",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 3),
.end = AB5500_IRQ(21, 3),
},
{
.name = "CHGstate_14_FullChgDCIO",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 4),
.end = AB5500_IRQ(21, 4),
},
{
.name = "CHGstate_15_SafeModeDCIO",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 5),
.end = AB5500_IRQ(21, 5),
},
{
.name = "CHGstate_16_OFFsuspendDCIO",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 6),
.end = AB5500_IRQ(21, 6),
},
{
.name = "CHGstate_17_completedDCIO",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(21, 7),
.end = AB5500_IRQ(21, 7),
},
},
},
[AB5500_DEVID_OTP] = {
.name = "ab5500-otp",
.id = AB5500_DEVID_OTP,
},
[AB5500_DEVID_VIDEO] = {
.name = "ab5500-video",
.id = AB5500_DEVID_VIDEO,
.num_resources = 1,
.resources = (struct resource[]) {
{
.name = "plugTVdet",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(22, 2),
.end = AB5500_IRQ(22, 2),
},
},
},
[AB5500_DEVID_DBIECI] = {
.name = "ab5500-dbieci",
.id = AB5500_DEVID_DBIECI,
.num_resources = 10,
.resources = (struct resource[]) {
{
.name = "COLL",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 0),
.end = AB5500_IRQ(14, 0),
},
{
.name = "RESERR",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 1),
.end = AB5500_IRQ(14, 1),
},
{
.name = "FRAERR",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 2),
.end = AB5500_IRQ(14, 2),
},
{
.name = "COMERR",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 3),
.end = AB5500_IRQ(14, 3),
},
{
.name = "BSI_indicator",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 4),
.end = AB5500_IRQ(14, 4),
},
{
.name = "SPDSET",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 6),
.end = AB5500_IRQ(14, 6),
},
{
.name = "DSENT",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(14, 7),
.end = AB5500_IRQ(14, 7),
},
{
.name = "DREC",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(15, 0),
.end = AB5500_IRQ(15, 0),
},
{
.name = "ACCINT",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(15, 1),
.end = AB5500_IRQ(15, 1),
},
{
.name = "NOPINT",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(15, 2),
.end = AB5500_IRQ(15, 2),
},
},
},
[AB5500_DEVID_ONSWA] = {
.name = "ab5500-onswa",
.id = AB5500_DEVID_ONSWA,
.num_resources = 2,
.resources = (struct resource[]) {
{
.name = "ONSWAn_rising",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(1, 3),
.end = AB5500_IRQ(1, 3),
},
{
.name = "ONSWAn_falling",
.flags = IORESOURCE_IRQ,
.start = AB5500_IRQ(1, 4),
.end = AB5500_IRQ(1, 4),
},
},
},
};
/*
* Functionality for getting/setting register values.
*/
int ab5500_get_register_interruptible_raw(struct ab5500 *ab,
u8 bank, u8 reg,
u8 *value)
{
int err;
if (bank >= AB5500_NUM_BANKS)
return -EINVAL;
err = mutex_lock_interruptible(&ab->access_mutex);
if (err)
return err;
err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr, reg, value, 1);
mutex_unlock(&ab->access_mutex);
return err;
}
static int get_register_page_interruptible(struct ab5500 *ab, u8 bank,
u8 first_reg, u8 *regvals, u8 numregs)
{
int err;
if (bank >= AB5500_NUM_BANKS)
return -EINVAL;
err = mutex_lock_interruptible(&ab->access_mutex);
if (err)
return err;
while (numregs) {
/* The hardware limit for get page is 4 */
u8 curnum = min_t(u8, numregs, 4u);
err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr,
first_reg, regvals, curnum);
if (err)
goto out;
numregs -= curnum;
first_reg += curnum;
regvals += curnum;
}
out:
mutex_unlock(&ab->access_mutex);
return err;
}
int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank,
u8 reg, u8 bitmask, u8 bitvalues)
{
int err = 0;
if (bank >= AB5500_NUM_BANKS)
return -EINVAL;
if (bitmask) {
u8 buf;
err = mutex_lock_interruptible(&ab->access_mutex);
if (err)
return err;
if (bitmask == 0xFF) /* No need to read in this case. */
buf = bitvalues;
else { /* Read and modify the register value. */
err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr,
reg, &buf, 1);
if (err)
return err;
buf = ((~bitmask & buf) | (bitmask & bitvalues));
}
/* Write the new value. */
err = db5500_prcmu_abb_write(bankinfo[bank].slave_addr, reg,
&buf, 1);
mutex_unlock(&ab->access_mutex);
}
return err;
}
static int
set_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, u8 value)
{
return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
0xff, value);
}
/*
* Read/write permission checking functions.
*/
static const struct ab5500_i2c_ranges *get_bankref(u8 devid, u8 bank)
{
u8 i;
if (devid < AB5500_NUM_DEVICES) {
for (i = 0; i < ab5500_bank_ranges[devid].nbanks; i++) {
if (ab5500_bank_ranges[devid].bank[i].bankid == bank)
return &ab5500_bank_ranges[devid].bank[i];
}
}
return NULL;
}
static bool page_write_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg)
{
u8 i; /* range loop index */
const struct ab5500_i2c_ranges *bankref;
bankref = get_bankref(devid, bank);
if (bankref == NULL || last_reg < first_reg)
return false;
for (i = 0; i < bankref->nranges; i++) {
if (first_reg < bankref->range[i].first)
break;
if ((last_reg <= bankref->range[i].last) &&
(bankref->range[i].perm & AB5500_PERM_WR))
return true;
}
return false;
}
static bool reg_write_allowed(u8 devid, u8 bank, u8 reg)
{
return page_write_allowed(devid, bank, reg, reg);
}
static bool page_read_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg)
{
u8 i;
const struct ab5500_i2c_ranges *bankref;
bankref = get_bankref(devid, bank);
if (bankref == NULL || last_reg < first_reg)
return false;
/* Find the range (if it exists in the list) that includes first_reg. */
for (i = 0; i < bankref->nranges; i++) {
if (first_reg < bankref->range[i].first)
return false;
if (first_reg <= bankref->range[i].last)
break;
}
/* Make sure that the entire range up to and including last_reg is
* readable. This may span several of the ranges in the list.
*/
while ((i < bankref->nranges) &&
(bankref->range[i].perm & AB5500_PERM_RD)) {
if (last_reg <= bankref->range[i].last)
return true;
if ((++i >= bankref->nranges) ||
(bankref->range[i].first !=
(bankref->range[i - 1].last + 1))) {
break;
}
}
return false;
}
static bool reg_read_allowed(u8 devid, u8 bank, u8 reg)
{
return page_read_allowed(devid, bank, reg, reg);
}
/*
* The exported register access functionality.
*/
static int ab5500_get_chip_id(struct device *dev)
{
struct ab5500 *ab = dev_get_drvdata(dev->parent);
return (int)ab->chip_id;
}
static int ab5500_mask_and_set_register_interruptible(struct device *dev,
u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
{
struct ab5500 *ab;
struct platform_device *pdev = to_platform_device(dev);
if ((AB5500_NUM_BANKS <= bank) ||
!reg_write_allowed(pdev->id, bank, reg))
return -EINVAL;
ab = dev_get_drvdata(dev->parent);
return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg,
bitmask, bitvalues);
}
static int ab5500_set_register_interruptible(struct device *dev, u8 bank,
u8 reg, u8 value)
{
return ab5500_mask_and_set_register_interruptible(dev, bank, reg, 0xFF,
value);
}
static int ab5500_get_register_interruptible(struct device *dev, u8 bank,
u8 reg, u8 *value)
{
struct ab5500 *ab;
struct platform_device *pdev = to_platform_device(dev);
if ((AB5500_NUM_BANKS <= bank) ||
!reg_read_allowed(pdev->id, bank, reg))
return -EINVAL;
ab = dev_get_drvdata(dev->parent);
return ab5500_get_register_interruptible_raw(ab, bank, reg, value);
}
static int ab5500_get_register_page_interruptible(struct device *dev, u8 bank,
u8 first_reg, u8 *regvals, u8 numregs)
{
struct ab5500 *ab;
struct platform_device *pdev = to_platform_device(dev);
if ((AB5500_NUM_BANKS <= bank) ||
!page_read_allowed(pdev->id, bank,
first_reg, (first_reg + numregs - 1)))
return -EINVAL;
ab = dev_get_drvdata(dev->parent);
return get_register_page_interruptible(ab, bank, first_reg, regvals,
numregs);
}
static int
ab5500_event_registers_startup_state_get(struct device *dev, u8 *event)
{
struct ab5500 *ab;
ab = dev_get_drvdata(dev->parent);
if (!ab->startup_events_read)
return -EAGAIN; /* Try again later */
memcpy(event, ab->startup_events, AB5500_NUM_EVENT_REG);
return 0;
}
static struct abx500_ops ab5500_ops = {
.get_chip_id = ab5500_get_chip_id,
.get_register = ab5500_get_register_interruptible,
.set_register = ab5500_set_register_interruptible,
.get_register_page = ab5500_get_register_page_interruptible,
.set_register_page = NULL,
.mask_and_set_register = ab5500_mask_and_set_register_interruptible,
.event_registers_startup_state_get =
ab5500_event_registers_startup_state_get,
.startup_irq_enabled = NULL,
};
/*
* ab5500_setup : Basic set-up, datastructure creation/destruction
* and I2C interface.This sets up a default config
* in the AB5500 chip so that it will work as expected.
* @ab : Pointer to ab5500 structure
* @settings : Pointer to struct abx500_init_settings
* @size : Size of init data
*/
static int __init ab5500_setup(struct ab5500 *ab,
struct abx500_init_settings *settings, unsigned int size)
{
int err = 0;
int i;
for (i = 0; i < size; i++) {
err = ab5500_mask_and_set_register_interruptible_raw(ab,
settings[i].bank,
settings[i].reg,
0xFF, settings[i].setting);
if (err)
goto exit_no_setup;
/* If event mask register update the event mask in ab5500 */
if ((settings[i].bank == AB5500_BANK_IT) &&
(AB5500_MASK_BASE <= settings[i].reg) &&
(settings[i].reg <= AB5500_MASK_END)) {
ab->mask[settings[i].reg - AB5500_MASK_BASE] =
settings[i].setting;
}
}
exit_no_setup:
return err;
}
struct ab_family_id {
u8 id;
char *name;
};
static const struct ab_family_id ids[] __initdata = {
/* AB5500 */
{
.id = AB5500_1_0,
.name = "1.0"
},
{
.id = AB5500_1_1,
.name = "1.1"
},
/* Terminator */
{
.id = 0x00,
}
};
static int __init ab5500_probe(struct platform_device *pdev)
{
struct ab5500 *ab;
struct ab5500_platform_data *ab5500_plf_data =
pdev->dev.platform_data;
int err;
int i;
ab = kzalloc(sizeof(struct ab5500), GFP_KERNEL);
if (!ab) {
dev_err(&pdev->dev,
"could not allocate ab5500 device\n");
return -ENOMEM;
}
/* Initialize data structure */
mutex_init(&ab->access_mutex);
mutex_init(&ab->irq_lock);
ab->dev = &pdev->dev;
platform_set_drvdata(pdev, ab);
/* Read chip ID register */
err = ab5500_get_register_interruptible_raw(ab,
AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
AB5500_CHIP_ID, &ab->chip_id);
if (err) {
dev_err(&pdev->dev, "could not communicate with the analog "
"baseband chip\n");
goto exit_no_detect;
}
for (i = 0; ids[i].id != 0x0; i++) {
if (ids[i].id == ab->chip_id) {
snprintf(&ab->chip_name[0], sizeof(ab->chip_name) - 1,
"AB5500 %s", ids[i].name);
break;
}
}
if (ids[i].id == 0x0) {
dev_err(&pdev->dev, "unknown analog baseband chip id: 0x%x\n",
ab->chip_id);
dev_err(&pdev->dev, "driver not started!\n");
goto exit_no_detect;
}
/* Clear and mask all interrupts */
for (i = 0; i < AB5500_NUM_IRQ_REGS; i++) {
u8 latchreg = AB5500_IT_LATCH0_REG + i;
u8 maskreg = AB5500_IT_MASK0_REG + i;
u8 val;
ab5500_get_register_interruptible_raw(ab, AB5500_BANK_IT,
latchreg, &val);
set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff);
ab->mask[i] = ab->oldmask[i] = 0xff;
}
err = abx500_register_ops(&pdev->dev, &ab5500_ops);
if (err) {
dev_err(&pdev->dev, "ab5500_register ops error\n");
goto exit_no_detect;
}
/* Set up and register the platform devices. */
for (i = 0; i < AB5500_NUM_DEVICES; i++) {
ab5500_devs[i].platform_data = ab5500_plf_data->dev_data[i];
ab5500_devs[i].pdata_size =
sizeof(ab5500_plf_data->dev_data[i]);
}
err = mfd_add_devices(&pdev->dev, 0, ab5500_devs,
ARRAY_SIZE(ab5500_devs), NULL,
ab5500_plf_data->irq.base);
if (err) {
dev_err(&pdev->dev, "ab5500_mfd_add_device error\n");
goto exit_no_detect;
}
err = ab5500_setup(ab, ab5500_plf_data->init_settings,
ab5500_plf_data->init_settings_sz);
if (err) {
dev_err(&pdev->dev, "ab5500_setup error\n");
goto exit_no_detect;
}
ab5500_setup_debugfs(ab);
dev_info(&pdev->dev, "detected AB chip: %s\n", &ab->chip_name[0]);
return 0;
exit_no_detect:
kfree(ab);
return err;
}
static int __exit ab5500_remove(struct platform_device *pdev)
{
struct ab5500 *ab = platform_get_drvdata(pdev);
ab5500_remove_debugfs();
mfd_remove_devices(&pdev->dev);
kfree(ab);
return 0;
}
static struct platform_driver ab5500_driver = {
.driver = {
.name = "ab5500-core",
.owner = THIS_MODULE,
},
.remove = __exit_p(ab5500_remove),
};
static int __init ab5500_core_init(void)
{
return platform_driver_probe(&ab5500_driver, ab5500_probe);
}
static void __exit ab5500_core_exit(void)
{
platform_driver_unregister(&ab5500_driver);
}
subsys_initcall(ab5500_core_init);
module_exit(ab5500_core_exit);
MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
MODULE_DESCRIPTION("AB5500 core driver");
MODULE_LICENSE("GPL");
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