Pull sbs into release branch

drivers/acpi/Kconfig

@@ -351,11 +351,10 @@ config ACPI_HOTPLUG_MEMORY
 
 config ACPI_SBS
 	tristate "Smart Battery System (EXPERIMENTAL)"
-	depends on X86 && I2C
+	depends on X86
 	depends on EXPERIMENTAL
 	help
 	  This driver adds support for the Smart Battery System.
-	  Depends on I2C (Device Drivers ---> I2C support)
 	  A "Smart Battery" is quite old and quite rare compared
 	  to today's ACPI "Control Method" battery.
 

drivers/acpi/Makefile

@@ -59,4 +59,4 @@ obj-$(CONFIG_ACPI_ASUS)		+= asus_acpi.o
 obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o
 obj-y				+= cm_sbs.o
-obj-$(CONFIG_ACPI_SBS)		+= i2c_ec.o sbs.o
+obj-$(CONFIG_ACPI_SBS)		+= sbs.o

drivers/acpi/i2c_ec.c

-/*
- * SMBus driver for ACPI Embedded Controller ($Revision: 1.3 $)
- *
- * Copyright (c) 2002, 2005 Ducrot Bruno
- * Copyright (c) 2005 Rich Townsend (tiny hacks & tweaks)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation version 2.
- */
-
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include <linux/acpi.h>
-#include <linux/delay.h>
-
-#include "i2c_ec.h"
-
-#define	xudelay(t)	udelay(t)
-#define	xmsleep(t)	msleep(t)
-
-#define ACPI_EC_HC_COMPONENT	0x00080000
-#define ACPI_EC_HC_CLASS	"ec_hc_smbus"
-#define ACPI_EC_HC_HID		"ACPI0001"
-#define ACPI_EC_HC_DEVICE_NAME	"EC HC smbus"
-
-#define _COMPONENT		ACPI_EC_HC_COMPONENT
-
-ACPI_MODULE_NAME("i2c_ec");
-
-static int acpi_ec_hc_add(struct acpi_device *device);
-static int acpi_ec_hc_remove(struct acpi_device *device, int type);
-
-static struct acpi_driver acpi_ec_hc_driver = {
-	.name = "i2c_ec",
-	.class = ACPI_EC_HC_CLASS,
-	.ids = ACPI_EC_HC_HID,
-	.ops = {
-		.add = acpi_ec_hc_add,
-		.remove = acpi_ec_hc_remove,
-		},
-};
-
-/* Various bit mask for EC_SC (R) */
-#define OBF		0x01
-#define IBF		0x02
-#define CMD		0x08
-#define BURST		0x10
-#define SCI_EVT		0x20
-#define SMI_EVT		0x40
-
-/* Commands for EC_SC (W) */
-#define RD_EC		0x80
-#define WR_EC		0x81
-#define BE_EC		0x82
-#define BD_EC		0x83
-#define QR_EC		0x84
-
-/*
- * ACPI 2.0 chapter 13 SMBus 2.0 EC register model
- */
-
-#define ACPI_EC_SMB_PRTCL	0x00	/* protocol, PEC */
-#define ACPI_EC_SMB_STS		0x01	/* status */
-#define ACPI_EC_SMB_ADDR	0x02	/* address */
-#define ACPI_EC_SMB_CMD		0x03	/* command */
-#define ACPI_EC_SMB_DATA	0x04	/* 32 data registers */
-#define ACPI_EC_SMB_BCNT	0x24	/* number of data bytes */
-#define ACPI_EC_SMB_ALRM_A	0x25	/* alarm address */
-#define ACPI_EC_SMB_ALRM_D	0x26	/* 2 bytes alarm data */
-
-#define ACPI_EC_SMB_STS_DONE	0x80
-#define ACPI_EC_SMB_STS_ALRM	0x40
-#define ACPI_EC_SMB_STS_RES	0x20
-#define ACPI_EC_SMB_STS_STATUS	0x1f
-
-#define ACPI_EC_SMB_STATUS_OK		0x00
-#define ACPI_EC_SMB_STATUS_FAIL		0x07
-#define ACPI_EC_SMB_STATUS_DNAK		0x10
-#define ACPI_EC_SMB_STATUS_DERR		0x11
-#define ACPI_EC_SMB_STATUS_CMD_DENY	0x12
-#define ACPI_EC_SMB_STATUS_UNKNOWN	0x13
-#define ACPI_EC_SMB_STATUS_ACC_DENY	0x17
-#define ACPI_EC_SMB_STATUS_TIMEOUT	0x18
-#define ACPI_EC_SMB_STATUS_NOTSUP	0x19
-#define ACPI_EC_SMB_STATUS_BUSY		0x1A
-#define ACPI_EC_SMB_STATUS_PEC		0x1F
-
-#define ACPI_EC_SMB_PRTCL_WRITE			0x00
-#define ACPI_EC_SMB_PRTCL_READ			0x01
-#define ACPI_EC_SMB_PRTCL_QUICK			0x02
-#define ACPI_EC_SMB_PRTCL_BYTE			0x04
-#define ACPI_EC_SMB_PRTCL_BYTE_DATA		0x06
-#define ACPI_EC_SMB_PRTCL_WORD_DATA		0x08
-#define ACPI_EC_SMB_PRTCL_BLOCK_DATA		0x0a
-#define ACPI_EC_SMB_PRTCL_PROC_CALL		0x0c
-#define ACPI_EC_SMB_PRTCL_BLOCK_PROC_CALL	0x0d
-#define ACPI_EC_SMB_PRTCL_I2C_BLOCK_DATA	0x4a
-#define ACPI_EC_SMB_PRTCL_PEC			0x80
-
-/* Length of pre/post transaction sleep (msec) */
-#define ACPI_EC_SMB_TRANSACTION_SLEEP		1
-#define ACPI_EC_SMB_ACCESS_SLEEP1		1
-#define ACPI_EC_SMB_ACCESS_SLEEP2		10
-
-static int acpi_ec_smb_read(struct acpi_ec_smbus *smbus, u8 address, u8 * data)
-{
-	u8 val;
-	int err;
-
-	err = ec_read(smbus->base + address, &val);
-	if (!err) {
-		*data = val;
-	}
-	xmsleep(ACPI_EC_SMB_TRANSACTION_SLEEP);
-	return (err);
-}
-
-static int acpi_ec_smb_write(struct acpi_ec_smbus *smbus, u8 address, u8 data)
-{
-	int err;
-
-	err = ec_write(smbus->base + address, data);
-	return (err);
-}
-
-static int
-acpi_ec_smb_access(struct i2c_adapter *adap, u16 addr, unsigned short flags,
-		   char read_write, u8 command, int size,
-		   union i2c_smbus_data *data)
-{
-	struct acpi_ec_smbus *smbus = adap->algo_data;
-	unsigned char protocol, len = 0, pec, temp[2] = { 0, 0 };
-	int i;
-
-	if (read_write == I2C_SMBUS_READ) {
-		protocol = ACPI_EC_SMB_PRTCL_READ;
-	} else {
-		protocol = ACPI_EC_SMB_PRTCL_WRITE;
-	}
-	pec = (flags & I2C_CLIENT_PEC) ? ACPI_EC_SMB_PRTCL_PEC : 0;
-
-	switch (size) {
-
-	case I2C_SMBUS_QUICK:
-		protocol |= ACPI_EC_SMB_PRTCL_QUICK;
-		read_write = I2C_SMBUS_WRITE;
-		break;
-
-	case I2C_SMBUS_BYTE:
-		if (read_write == I2C_SMBUS_WRITE) {
-			acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->byte);
-		}
-		protocol |= ACPI_EC_SMB_PRTCL_BYTE;
-		break;
-
-	case I2C_SMBUS_BYTE_DATA:
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
-		if (read_write == I2C_SMBUS_WRITE) {
-			acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->byte);
-		}
-		protocol |= ACPI_EC_SMB_PRTCL_BYTE_DATA;
-		break;
-
-	case I2C_SMBUS_WORD_DATA:
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
-		if (read_write == I2C_SMBUS_WRITE) {
-			acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->word);
-			acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + 1,
-					  data->word >> 8);
-		}
-		protocol |= ACPI_EC_SMB_PRTCL_WORD_DATA | pec;
-		break;
-
-	case I2C_SMBUS_BLOCK_DATA:
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
-		if (read_write == I2C_SMBUS_WRITE) {
-			len = min_t(u8, data->block[0], 32);
-			acpi_ec_smb_write(smbus, ACPI_EC_SMB_BCNT, len);
-			for (i = 0; i < len; i++)
-				acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + i,
-						  data->block[i + 1]);
-		}
-		protocol |= ACPI_EC_SMB_PRTCL_BLOCK_DATA | pec;
-		break;
-
-	case I2C_SMBUS_I2C_BLOCK_DATA:
-		len = min_t(u8, data->block[0], 32);
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_BCNT, len);
-		if (read_write == I2C_SMBUS_WRITE) {
-			for (i = 0; i < len; i++) {
-				acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + i,
-						  data->block[i + 1]);
-			}
-		}
-		protocol |= ACPI_EC_SMB_PRTCL_I2C_BLOCK_DATA;
-		break;
-
-	case I2C_SMBUS_PROC_CALL:
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->word);
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + 1, data->word >> 8);
-		protocol = ACPI_EC_SMB_PRTCL_PROC_CALL | pec;
-		read_write = I2C_SMBUS_READ;
-		break;
-
-	case I2C_SMBUS_BLOCK_PROC_CALL:
-		protocol |= pec;
-		len = min_t(u8, data->block[0], 31);
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
-		acpi_ec_smb_write(smbus, ACPI_EC_SMB_BCNT, len);
-		for (i = 0; i < len; i++)
-			acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + i,
-					  data->block[i + 1]);
-		protocol = ACPI_EC_SMB_PRTCL_BLOCK_PROC_CALL | pec;
-		read_write = I2C_SMBUS_READ;
-		break;
-
-	default:
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "EC SMBus adapter: "
-				  "Unsupported transaction %d\n", size));
-		return (-1);
-	}
-
-	acpi_ec_smb_write(smbus, ACPI_EC_SMB_ADDR, addr << 1);
-	acpi_ec_smb_write(smbus, ACPI_EC_SMB_PRTCL, protocol);
-
-	acpi_ec_smb_read(smbus, ACPI_EC_SMB_STS, temp + 0);
-
-	if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
-		xudelay(500);
-		acpi_ec_smb_read(smbus, ACPI_EC_SMB_STS, temp + 0);
-	}
-	if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
-		xmsleep(ACPI_EC_SMB_ACCESS_SLEEP2);
-		acpi_ec_smb_read(smbus, ACPI_EC_SMB_STS, temp + 0);
-	}
-	if ((~temp[0] & ACPI_EC_SMB_STS_DONE)
-	    || (temp[0] & ACPI_EC_SMB_STS_STATUS)) {
-		return (-1);
-	}
-
-	if (read_write == I2C_SMBUS_WRITE) {
-		return (0);
-	}
-
-	switch (size) {
-
-	case I2C_SMBUS_BYTE:
-	case I2C_SMBUS_BYTE_DATA:
-		acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA, &data->byte);
-		break;
-
-	case I2C_SMBUS_WORD_DATA:
-	case I2C_SMBUS_PROC_CALL:
-		acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA, temp + 0);
-		acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA + 1, temp + 1);
-		data->word = (temp[1] << 8) | temp[0];
-		break;
-
-	case I2C_SMBUS_BLOCK_DATA:
-	case I2C_SMBUS_BLOCK_PROC_CALL:
-		len = 0;
-		acpi_ec_smb_read(smbus, ACPI_EC_SMB_BCNT, &len);
-		len = min_t(u8, len, 32);
-	case I2C_SMBUS_I2C_BLOCK_DATA:
-		for (i = 0; i < len; i++)
-			acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA + i,
-					 data->block + i + 1);
-		data->block[0] = len;
-		break;
-	}
-
-	return (0);
-}
-
-static u32 acpi_ec_smb_func(struct i2c_adapter *adapter)
-{
-
-	return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
-		I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
-		I2C_FUNC_SMBUS_BLOCK_DATA |
-		I2C_FUNC_SMBUS_PROC_CALL |
-		I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
-		I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_HWPEC_CALC);
-}
-
-static const struct i2c_algorithm acpi_ec_smbus_algorithm = {
-	.smbus_xfer = acpi_ec_smb_access,
-	.functionality = acpi_ec_smb_func,
-};
-
-static int acpi_ec_hc_add(struct acpi_device *device)
-{
-	int status;
-	unsigned long val;
-	struct acpi_ec_hc *ec_hc;
-	struct acpi_ec_smbus *smbus;
-
-	if (!device) {
-		return -EINVAL;
-	}
-
-	ec_hc = kzalloc(sizeof(struct acpi_ec_hc), GFP_KERNEL);
-	if (!ec_hc) {
-		return -ENOMEM;
-	}
-
-	smbus = kzalloc(sizeof(struct acpi_ec_smbus), GFP_KERNEL);
-	if (!smbus) {
-		kfree(ec_hc);
-		return -ENOMEM;
-	}
-
-	ec_hc->handle = device->handle;
-	strcpy(acpi_device_name(device), ACPI_EC_HC_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_EC_HC_CLASS);
-	acpi_driver_data(device) = ec_hc;
-
-	status = acpi_evaluate_integer(ec_hc->handle, "_EC", NULL, &val);
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Error obtaining _EC\n"));
-		kfree(ec_hc);
-		kfree(smbus);
-		return -EIO;
-	}
-
-	smbus->ec = acpi_driver_data(device->parent);
-	smbus->base = (val & 0xff00ull) >> 8;
-	smbus->alert = val & 0xffull;
-
-	smbus->adapter.owner = THIS_MODULE;
-	smbus->adapter.algo = &acpi_ec_smbus_algorithm;
-	smbus->adapter.algo_data = smbus;
-	smbus->adapter.dev.parent = &device->dev;
-
-	if (i2c_add_adapter(&smbus->adapter)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_WARN,
-				  "EC SMBus adapter: Failed to register adapter\n"));
-		kfree(smbus);
-		kfree(ec_hc);
-		return -EIO;
-	}
-
-	ec_hc->smbus = smbus;
-
-	printk(KERN_INFO PREFIX "%s [%s]\n",
-	       acpi_device_name(device), acpi_device_bid(device));
-
-	return AE_OK;
-}
-
-static int acpi_ec_hc_remove(struct acpi_device *device, int type)
-{
-	struct acpi_ec_hc *ec_hc;
-
-	if (!device) {
-		return -EINVAL;
-	}
-	ec_hc = acpi_driver_data(device);
-
-	i2c_del_adapter(&ec_hc->smbus->adapter);
-	kfree(ec_hc->smbus);
-	kfree(ec_hc);
-
-	return AE_OK;
-}
-
-static int __init acpi_ec_hc_init(void)
-{
-	int result;
-
-	result = acpi_bus_register_driver(&acpi_ec_hc_driver);
-	if (result < 0) {
-		return -ENODEV;
-	}
-	return 0;
-}
-
-static void __exit acpi_ec_hc_exit(void)
-{
-	acpi_bus_unregister_driver(&acpi_ec_hc_driver);
-}
-
-struct acpi_ec_hc *acpi_get_ec_hc(struct acpi_device *device)
-{
-	return acpi_driver_data(device->parent);
-}
-
-EXPORT_SYMBOL(acpi_get_ec_hc);
-
-module_init(acpi_ec_hc_init);
-module_exit(acpi_ec_hc_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Ducrot Bruno");
-MODULE_DESCRIPTION("ACPI EC SMBus driver");

drivers/acpi/i2c_ec.h

-/*
- * SMBus driver for ACPI Embedded Controller ($Revision: 1.2 $)
- *
- * Copyright (c) 2002, 2005 Ducrot Bruno
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation version 2.
- */
-
-struct acpi_ec_smbus {
-	struct i2c_adapter adapter;
-	union acpi_ec *ec;
-	int base;
-	int alert;
-};
-
-struct acpi_ec_hc {
-	acpi_handle handle;
-	struct acpi_ec_smbus *smbus;
-};
-
-struct acpi_ec_hc *acpi_get_ec_hc(struct acpi_device *device);