Pull sony into release branch
This commit is contained in:
Len Brown
@@ -107,4 +107,19 @@ config MSI_LAPTOP
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If you have an MSI S270 laptop, say Y or M here.
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config SONY_LAPTOP
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tristate "Sony Laptop Extras"
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depends on X86 && ACPI
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select BACKLIGHT_CLASS_DEVICE
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---help---
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This mini-driver drives the SNC device present in the ACPI BIOS of
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the Sony Vaio laptops.
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It gives access to some extra laptop functionalities. In its current
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form, this driver let the user set or query the screen brightness
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through the backlight subsystem and remove/apply power to some
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devices.
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Read <file:Documentation/sony-laptop.txt> for more information.
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endmenu
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@@ -11,3 +11,4 @@ obj-$(CONFIG_LKDTM) += lkdtm.o
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obj-$(CONFIG_TIFM_CORE) += tifm_core.o
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obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o
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obj-$(CONFIG_SGI_IOC4) += ioc4.o
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obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
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@@ -0,0 +1,562 @@
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/*
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* ACPI Sony Notebook Control Driver (SNC)
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*
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* Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
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* Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
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*
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* Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
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* which are copyrighted by their respective authors.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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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/moduleparam.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/backlight.h>
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#include <linux/platform_device.h>
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#include <linux/err.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#include <asm/uaccess.h>
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#define ACPI_SNC_CLASS "sony"
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#define ACPI_SNC_HID "SNY5001"
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#define ACPI_SNC_DRIVER_NAME "ACPI Sony Notebook Control Driver v0.4"
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/* the device uses 1-based values, while the backlight subsystem uses
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0-based values */
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#define SONY_MAX_BRIGHTNESS 8
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#define LOG_PFX KERN_WARNING "sony-laptop: "
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MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
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MODULE_DESCRIPTION(ACPI_SNC_DRIVER_NAME);
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MODULE_LICENSE("GPL");
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static int debug;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
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"the development of this driver");
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static ssize_t sony_acpi_show(struct device *, struct device_attribute *,
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char *);
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static ssize_t sony_acpi_store(struct device *, struct device_attribute *,
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const char *, size_t);
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static int boolean_validate(const int, const int);
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static int brightness_default_validate(const int, const int);
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#define SNC_VALIDATE_IN 0
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#define SNC_VALIDATE_OUT 1
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struct sony_acpi_value {
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char *name; /* name of the entry */
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char **acpiget; /* names of the ACPI get function */
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char **acpiset; /* names of the ACPI set function */
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int (*validate)(const int, const int); /* input/output validation */
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int value; /* current setting */
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int valid; /* Has ever been set */
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int debug; /* active only in debug mode ? */
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struct device_attribute devattr; /* sysfs atribute */
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};
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#define HANDLE_NAMES(_name, _values...) \
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static char *snc_##_name[] = { _values, NULL }
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#define SONY_ACPI_VALUE(_name, _getters, _setters, _validate, _debug) \
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{ \
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.name = __stringify(_name), \
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.acpiget = _getters, \
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.acpiset = _setters, \
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.validate = _validate, \
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.debug = _debug, \
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.devattr = __ATTR(_name, 0, sony_acpi_show, sony_acpi_store), \
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}
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#define SONY_ACPI_VALUE_NULL { .name = NULL }
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HANDLE_NAMES(fnkey_get, "GHKE");
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HANDLE_NAMES(brightness_def_get, "GPBR");
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HANDLE_NAMES(brightness_def_set, "SPBR");
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HANDLE_NAMES(cdpower_get, "GCDP");
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HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
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HANDLE_NAMES(audiopower_get, "GAZP");
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HANDLE_NAMES(audiopower_set, "AZPW");
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HANDLE_NAMES(lanpower_get, "GLNP");
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HANDLE_NAMES(lanpower_set, "LNPW");
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HANDLE_NAMES(PID_get, "GPID");
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HANDLE_NAMES(CTR_get, "GCTR");
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HANDLE_NAMES(CTR_set, "SCTR");
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HANDLE_NAMES(PCR_get, "GPCR");
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HANDLE_NAMES(PCR_set, "SPCR");
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HANDLE_NAMES(CMI_get, "GCMI");
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HANDLE_NAMES(CMI_set, "SCMI");
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static struct sony_acpi_value sony_acpi_values[] = {
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SONY_ACPI_VALUE(brightness_default, snc_brightness_def_get,
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snc_brightness_def_set, brightness_default_validate, 0),
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SONY_ACPI_VALUE(fnkey, snc_fnkey_get, NULL, NULL, 0),
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SONY_ACPI_VALUE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
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SONY_ACPI_VALUE(audiopower, snc_audiopower_get, snc_audiopower_set,
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boolean_validate, 0),
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SONY_ACPI_VALUE(lanpower, snc_lanpower_get, snc_lanpower_set,
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boolean_validate, 1),
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/* unknown methods */
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SONY_ACPI_VALUE(PID, snc_PID_get, NULL, NULL, 1),
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SONY_ACPI_VALUE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
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SONY_ACPI_VALUE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
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SONY_ACPI_VALUE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
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SONY_ACPI_VALUE_NULL
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};
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static acpi_handle sony_acpi_handle;
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static struct acpi_device *sony_acpi_acpi_device = NULL;
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/*
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* acpi_evaluate_object wrappers
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*/
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static int acpi_callgetfunc(acpi_handle handle, char *name, int *result)
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{
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struct acpi_buffer output;
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union acpi_object out_obj;
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acpi_status status;
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output.length = sizeof(out_obj);
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output.pointer = &out_obj;
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status = acpi_evaluate_object(handle, name, NULL, &output);
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if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) {
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*result = out_obj.integer.value;
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return 0;
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}
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printk(LOG_PFX "acpi_callreadfunc failed\n");
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return -1;
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}
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static int acpi_callsetfunc(acpi_handle handle, char *name, int value,
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int *result)
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{
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struct acpi_object_list params;
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union acpi_object in_obj;
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struct acpi_buffer output;
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union acpi_object out_obj;
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acpi_status status;
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params.count = 1;
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params.pointer = &in_obj;
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in_obj.type = ACPI_TYPE_INTEGER;
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in_obj.integer.value = value;
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output.length = sizeof(out_obj);
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output.pointer = &out_obj;
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status = acpi_evaluate_object(handle, name, ¶ms, &output);
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if (status == AE_OK) {
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if (result != NULL) {
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if (out_obj.type != ACPI_TYPE_INTEGER) {
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printk(LOG_PFX "acpi_evaluate_object bad "
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"return type\n");
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return -1;
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}
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*result = out_obj.integer.value;
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}
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return 0;
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}
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printk(LOG_PFX "acpi_evaluate_object failed\n");
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return -1;
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}
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/*
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* sony_acpi_values input/output validate functions
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*/
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/* brightness_default_validate:
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*
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* manipulate input output values to keep consistency with the
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* backlight framework for which brightness values are 0-based.
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*/
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static int brightness_default_validate(const int direction, const int value)
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{
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switch (direction) {
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case SNC_VALIDATE_OUT:
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return value - 1;
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case SNC_VALIDATE_IN:
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if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
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return value + 1;
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}
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return -EINVAL;
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}
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/* boolean_validate:
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*
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* on input validate boolean values 0/1, on output just pass the
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* received value.
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*/
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static int boolean_validate(const int direction, const int value)
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{
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if (direction == SNC_VALIDATE_IN) {
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if (value != 0 && value != 1)
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return -EINVAL;
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}
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return value;
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}
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/*
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* Sysfs show/store common to all sony_acpi_values
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*/
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static ssize_t sony_acpi_show(struct device *dev, struct device_attribute *attr,
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char *buffer)
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{
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int value;
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struct sony_acpi_value *item =
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container_of(attr, struct sony_acpi_value, devattr);
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if (!*item->acpiget)
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return -EIO;
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if (acpi_callgetfunc(sony_acpi_handle, *item->acpiget, &value) < 0)
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return -EIO;
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if (item->validate)
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value = item->validate(SNC_VALIDATE_OUT, value);
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return snprintf(buffer, PAGE_SIZE, "%d\n", value);
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}
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static ssize_t sony_acpi_store(struct device *dev,
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struct device_attribute *attr,
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const char *buffer, size_t count)
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{
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int value;
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struct sony_acpi_value *item =
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container_of(attr, struct sony_acpi_value, devattr);
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if (!item->acpiset)
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return -EIO;
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if (count > 31)
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return -EINVAL;
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value = simple_strtoul(buffer, NULL, 10);
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if (item->validate)
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value = item->validate(SNC_VALIDATE_IN, value);
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if (value < 0)
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return value;
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if (acpi_callsetfunc(sony_acpi_handle, *item->acpiset, value, NULL) < 0)
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return -EIO;
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item->value = value;
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item->valid = 1;
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return count;
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}
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/*
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* Platform device
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*/
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static struct platform_driver sncpf_driver = {
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.driver = {
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.name = "sony-laptop",
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.owner = THIS_MODULE,
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}
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};
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static struct platform_device *sncpf_device;
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static int sony_snc_pf_add(void)
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{
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acpi_handle handle;
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struct sony_acpi_value *item;
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int ret = 0;
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ret = platform_driver_register(&sncpf_driver);
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if (ret)
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goto out;
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sncpf_device = platform_device_alloc("sony-laptop", -1);
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if (!sncpf_device) {
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ret = -ENOMEM;
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goto out_platform_registered;
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}
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ret = platform_device_add(sncpf_device);
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if (ret)
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goto out_platform_alloced;
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for (item = sony_acpi_values; item->name; ++item) {
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if (!debug && item->debug)
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continue;
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/* find the available acpiget as described in the DSDT */
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for (; item->acpiget && *item->acpiget; ++item->acpiget) {
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if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
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*item->acpiget,
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&handle))) {
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if (debug)
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printk(LOG_PFX "Found %s getter: %s\n",
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item->name, *item->acpiget);
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item->devattr.attr.mode |= S_IRUGO;
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break;
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}
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}
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/* find the available acpiset as described in the DSDT */
|
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for (; item->acpiset && *item->acpiset; ++item->acpiset) {
|
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if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle,
|
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*item->acpiset,
|
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&handle))) {
|
||||
if (debug)
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printk(LOG_PFX "Found %s setter: %s\n",
|
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item->name, *item->acpiset);
|
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item->devattr.attr.mode |= S_IWUSR;
|
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break;
|
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}
|
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}
|
||||
|
||||
if (item->devattr.attr.mode != 0) {
|
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ret =
|
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device_create_file(&sncpf_device->dev,
|
||||
&item->devattr);
|
||||
if (ret)
|
||||
goto out_sysfs;
|
||||
}
|
||||
}
|
||||
|
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return 0;
|
||||
|
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out_sysfs:
|
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for (item = sony_acpi_values; item->name; ++item) {
|
||||
device_remove_file(&sncpf_device->dev, &item->devattr);
|
||||
}
|
||||
platform_device_del(sncpf_device);
|
||||
out_platform_alloced:
|
||||
platform_device_put(sncpf_device);
|
||||
out_platform_registered:
|
||||
platform_driver_unregister(&sncpf_driver);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void sony_snc_pf_remove(void)
|
||||
{
|
||||
struct sony_acpi_value *item;
|
||||
|
||||
for (item = sony_acpi_values; item->name; ++item) {
|
||||
device_remove_file(&sncpf_device->dev, &item->devattr);
|
||||
}
|
||||
|
||||
platform_device_del(sncpf_device);
|
||||
platform_device_put(sncpf_device);
|
||||
platform_driver_unregister(&sncpf_driver);
|
||||
}
|
||||
|
||||
/*
|
||||
* Backlight device
|
||||
*/
|
||||
static int sony_backlight_update_status(struct backlight_device *bd)
|
||||
{
|
||||
return acpi_callsetfunc(sony_acpi_handle, "SBRT",
|
||||
bd->props->brightness + 1, NULL);
|
||||
}
|
||||
|
||||
static int sony_backlight_get_brightness(struct backlight_device *bd)
|
||||
{
|
||||
int value;
|
||||
|
||||
if (acpi_callgetfunc(sony_acpi_handle, "GBRT", &value))
|
||||
return 0;
|
||||
/* brightness levels are 1-based, while backlight ones are 0-based */
|
||||
return value - 1;
|
||||
}
|
||||
|
||||
static struct backlight_device *sony_backlight_device;
|
||||
static struct backlight_properties sony_backlight_properties = {
|
||||
.owner = THIS_MODULE,
|
||||
.update_status = sony_backlight_update_status,
|
||||
.get_brightness = sony_backlight_get_brightness,
|
||||
.max_brightness = SONY_MAX_BRIGHTNESS - 1,
|
||||
};
|
||||
|
||||
/*
|
||||
* ACPI callbacks
|
||||
*/
|
||||
static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
|
||||
{
|
||||
if (debug)
|
||||
printk(LOG_PFX "sony_acpi_notify, event: %d\n", event);
|
||||
acpi_bus_generate_event(sony_acpi_acpi_device, 1, event);
|
||||
}
|
||||
|
||||
static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
|
||||
void *context, void **return_value)
|
||||
{
|
||||
struct acpi_namespace_node *node;
|
||||
union acpi_operand_object *operand;
|
||||
|
||||
node = (struct acpi_namespace_node *)handle;
|
||||
operand = (union acpi_operand_object *)node->object;
|
||||
|
||||
printk(LOG_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
|
||||
(u32) operand->method.param_count);
|
||||
|
||||
return AE_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* ACPI device
|
||||
*/
|
||||
static int sony_acpi_resume(struct acpi_device *device)
|
||||
{
|
||||
struct sony_acpi_value *item;
|
||||
|
||||
for (item = sony_acpi_values; item->name; item++) {
|
||||
int ret;
|
||||
|
||||
if (!item->valid)
|
||||
continue;
|
||||
ret = acpi_callsetfunc(sony_acpi_handle, *item->acpiset,
|
||||
item->value, NULL);
|
||||
if (ret < 0) {
|
||||
printk("%s: %d\n", __FUNCTION__, ret);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sony_acpi_add(struct acpi_device *device)
|
||||
{
|
||||
acpi_status status;
|
||||
int result;
|
||||
acpi_handle handle;
|
||||
|
||||
sony_acpi_acpi_device = device;
|
||||
|
||||
sony_acpi_handle = device->handle;
|
||||
|
||||
if (debug) {
|
||||
status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_acpi_handle,
|
||||
1, sony_walk_callback, NULL, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
printk(LOG_PFX "unable to walk acpi resources\n");
|
||||
result = -ENODEV;
|
||||
goto outwalk;
|
||||
}
|
||||
}
|
||||
|
||||
status = acpi_install_notify_handler(sony_acpi_handle,
|
||||
ACPI_DEVICE_NOTIFY,
|
||||
sony_acpi_notify, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
printk(LOG_PFX "unable to install notify handler\n");
|
||||
result = -ENODEV;
|
||||
goto outwalk;
|
||||
}
|
||||
|
||||
if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) {
|
||||
sony_backlight_device = backlight_device_register("sony", NULL,
|
||||
NULL,
|
||||
&sony_backlight_properties);
|
||||
|
||||
if (IS_ERR(sony_backlight_device)) {
|
||||
printk(LOG_PFX "unable to register backlight device\n");
|
||||
sony_backlight_device = NULL;
|
||||
} else
|
||||
sony_backlight_properties.brightness =
|
||||
sony_backlight_get_brightness
|
||||
(sony_backlight_device);
|
||||
}
|
||||
|
||||
if (sony_snc_pf_add())
|
||||
goto outbacklight;
|
||||
|
||||
printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully installed\n");
|
||||
|
||||
return 0;
|
||||
|
||||
outbacklight:
|
||||
if (sony_backlight_device)
|
||||
backlight_device_unregister(sony_backlight_device);
|
||||
|
||||
status = acpi_remove_notify_handler(sony_acpi_handle,
|
||||
ACPI_DEVICE_NOTIFY,
|
||||
sony_acpi_notify);
|
||||
if (ACPI_FAILURE(status))
|
||||
printk(LOG_PFX "unable to remove notify handler\n");
|
||||
outwalk:
|
||||
return result;
|
||||
}
|
||||
|
||||
static int sony_acpi_remove(struct acpi_device *device, int type)
|
||||
{
|
||||
acpi_status status;
|
||||
|
||||
if (sony_backlight_device)
|
||||
backlight_device_unregister(sony_backlight_device);
|
||||
|
||||
sony_acpi_acpi_device = NULL;
|
||||
|
||||
status = acpi_remove_notify_handler(sony_acpi_handle,
|
||||
ACPI_DEVICE_NOTIFY,
|
||||
sony_acpi_notify);
|
||||
if (ACPI_FAILURE(status))
|
||||
printk(LOG_PFX "unable to remove notify handler\n");
|
||||
|
||||
sony_snc_pf_remove();
|
||||
|
||||
printk(KERN_INFO ACPI_SNC_DRIVER_NAME " successfully removed\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct acpi_driver sony_acpi_driver = {
|
||||
.name = ACPI_SNC_DRIVER_NAME,
|
||||
.class = ACPI_SNC_CLASS,
|
||||
.ids = ACPI_SNC_HID,
|
||||
.ops = {
|
||||
.add = sony_acpi_add,
|
||||
.remove = sony_acpi_remove,
|
||||
.resume = sony_acpi_resume,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init sony_acpi_init(void)
|
||||
{
|
||||
return acpi_bus_register_driver(&sony_acpi_driver);
|
||||
}
|
||||
|
||||
static void __exit sony_acpi_exit(void)
|
||||
{
|
||||
acpi_bus_unregister_driver(&sony_acpi_driver);
|
||||
}
|
||||
|
||||
module_init(sony_acpi_init);
|
||||
module_exit(sony_acpi_exit);
|
||||
Reference in New Issue
Block a user