classmate-laptop: add support for Classmate PC ACPI devices
This add supports for devices like keyboard, backlight, tablet and accelerometer. This work is supported by International Syst S/A. [randy.dunlap@oracle.com: cmpc_acpi: depends on ACPI] [akpm@linux-foundation.org: readability tweaks] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Thadeu Lima de Souza Cascardo
Len Brown
Родитель
55639353a0
Коммит
529aa8cb0a
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@ -1470,6 +1470,12 @@ L: linux-scsi@vger.kernel.org
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S: Supported
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F: drivers/scsi/fnic/
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CMPC ACPI DRIVER
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M: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
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M: Daniel Oliveira Nascimento <don@syst.com.br>
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S: Supported
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F: drivers/platform/x86/classmate-laptop.c
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CODA FILE SYSTEM
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M: Jan Harkes <jaharkes@cs.cmu.edu>
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M: coda@cs.cmu.edu
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@ -464,4 +464,16 @@ config TOSHIBA_BT_RFKILL
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If you have a modern Toshiba laptop with a Bluetooth and an
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RFKill switch (such as the Portege R500), say Y.
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config ACPI_CMPC
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tristate "CMPC Laptop Extras"
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depends on X86 && ACPI
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select INPUT
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select BACKLIGHT_CLASS_DEVICE
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default n
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help
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Support for Intel Classmate PC ACPI devices, including some
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keys as input device, backlight device, tablet and accelerometer
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devices.
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endif # X86_PLATFORM_DEVICES
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@ -5,6 +5,7 @@
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obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
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obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
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obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
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obj-$(CONFIG_ACPI_CMPC) += classmate-laptop.o
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obj-$(CONFIG_COMPAL_LAPTOP) += compal-laptop.o
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obj-$(CONFIG_DELL_LAPTOP) += dell-laptop.o
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obj-$(CONFIG_DELL_WMI) += dell-wmi.o
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@ -0,0 +1,609 @@
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/*
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* Copyright (C) 2009 Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/workqueue.h>
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#include <acpi/acpi_drivers.h>
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#include <linux/backlight.h>
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#include <linux/input.h>
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MODULE_LICENSE("GPL");
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struct cmpc_accel {
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int sensitivity;
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};
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#define CMPC_ACCEL_SENSITIVITY_DEFAULT 5
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/*
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* Generic input device code.
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*/
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typedef void (*input_device_init)(struct input_dev *dev);
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static int cmpc_add_acpi_notify_device(struct acpi_device *acpi, char *name,
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input_device_init idev_init)
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{
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struct input_dev *inputdev;
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int error;
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inputdev = input_allocate_device();
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if (!inputdev)
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return -ENOMEM;
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inputdev->name = name;
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inputdev->dev.parent = &acpi->dev;
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idev_init(inputdev);
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error = input_register_device(inputdev);
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if (error) {
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input_free_device(inputdev);
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return error;
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}
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dev_set_drvdata(&acpi->dev, inputdev);
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return 0;
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}
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static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi)
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{
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struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
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input_unregister_device(inputdev);
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return 0;
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}
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/*
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* Accelerometer code.
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*/
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static acpi_status cmpc_start_accel(acpi_handle handle)
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{
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union acpi_object param[2];
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struct acpi_object_list input;
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acpi_status status;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x3;
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param[1].type = ACPI_TYPE_INTEGER;
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input.count = 2;
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input.pointer = param;
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status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
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return status;
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}
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static acpi_status cmpc_stop_accel(acpi_handle handle)
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{
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union acpi_object param[2];
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struct acpi_object_list input;
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acpi_status status;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x4;
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param[1].type = ACPI_TYPE_INTEGER;
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input.count = 2;
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input.pointer = param;
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status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
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return status;
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}
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static acpi_status cmpc_accel_set_sensitivity(acpi_handle handle, int val)
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{
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union acpi_object param[2];
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struct acpi_object_list input;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x02;
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param[1].type = ACPI_TYPE_INTEGER;
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param[1].integer.value = val;
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input.count = 2;
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input.pointer = param;
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return acpi_evaluate_object(handle, "ACMD", &input, NULL);
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}
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static acpi_status cmpc_get_accel(acpi_handle handle,
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unsigned char *x,
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unsigned char *y,
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unsigned char *z)
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{
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union acpi_object param[2];
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struct acpi_object_list input;
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, 0 };
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unsigned char *locs;
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acpi_status status;
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param[0].type = ACPI_TYPE_INTEGER;
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param[0].integer.value = 0x01;
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param[1].type = ACPI_TYPE_INTEGER;
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input.count = 2;
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input.pointer = param;
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status = acpi_evaluate_object(handle, "ACMD", &input, &output);
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if (ACPI_SUCCESS(status)) {
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union acpi_object *obj;
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obj = output.pointer;
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locs = obj->buffer.pointer;
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*x = locs[0];
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*y = locs[1];
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*z = locs[2];
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kfree(output.pointer);
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}
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return status;
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}
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static void cmpc_accel_handler(struct acpi_device *dev, u32 event)
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{
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if (event == 0x81) {
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unsigned char x, y, z;
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acpi_status status;
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status = cmpc_get_accel(dev->handle, &x, &y, &z);
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if (ACPI_SUCCESS(status)) {
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struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
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input_report_abs(inputdev, ABS_X, x);
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input_report_abs(inputdev, ABS_Y, y);
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input_report_abs(inputdev, ABS_Z, z);
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input_sync(inputdev);
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}
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}
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}
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static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct acpi_device *acpi;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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acpi = to_acpi_device(dev);
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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return sprintf(buf, "%d\n", accel->sensitivity);
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}
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static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct acpi_device *acpi;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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unsigned long sensitivity;
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int r;
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acpi = to_acpi_device(dev);
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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r = strict_strtoul(buf, 0, &sensitivity);
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if (r)
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return r;
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accel->sensitivity = sensitivity;
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cmpc_accel_set_sensitivity(acpi->handle, sensitivity);
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return strnlen(buf, count);
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}
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struct device_attribute cmpc_accel_sensitivity_attr = {
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.attr = { .name = "sensitivity", .mode = 0660 },
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.show = cmpc_accel_sensitivity_show,
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.store = cmpc_accel_sensitivity_store
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};
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static int cmpc_accel_open(struct input_dev *input)
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{
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struct acpi_device *acpi;
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acpi = to_acpi_device(input->dev.parent);
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if (ACPI_SUCCESS(cmpc_start_accel(acpi->handle)))
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return 0;
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return -EIO;
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}
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static void cmpc_accel_close(struct input_dev *input)
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{
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struct acpi_device *acpi;
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acpi = to_acpi_device(input->dev.parent);
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cmpc_stop_accel(acpi->handle);
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}
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static void cmpc_accel_idev_init(struct input_dev *inputdev)
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{
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set_bit(EV_ABS, inputdev->evbit);
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input_set_abs_params(inputdev, ABS_X, 0, 255, 8, 0);
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input_set_abs_params(inputdev, ABS_Y, 0, 255, 8, 0);
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input_set_abs_params(inputdev, ABS_Z, 0, 255, 8, 0);
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inputdev->open = cmpc_accel_open;
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inputdev->close = cmpc_accel_close;
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}
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static int cmpc_accel_add(struct acpi_device *acpi)
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{
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int error;
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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accel = kmalloc(sizeof(*accel), GFP_KERNEL);
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if (!accel)
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return -ENOMEM;
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accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
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cmpc_accel_set_sensitivity(acpi->handle, accel->sensitivity);
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error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
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if (error)
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goto failed_file;
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error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel",
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cmpc_accel_idev_init);
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if (error)
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goto failed_input;
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inputdev = dev_get_drvdata(&acpi->dev);
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dev_set_drvdata(&inputdev->dev, accel);
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return 0;
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failed_input:
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device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
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failed_file:
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kfree(accel);
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return error;
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}
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static int cmpc_accel_remove(struct acpi_device *acpi, int type)
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{
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struct input_dev *inputdev;
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struct cmpc_accel *accel;
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inputdev = dev_get_drvdata(&acpi->dev);
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accel = dev_get_drvdata(&inputdev->dev);
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device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
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return cmpc_remove_acpi_notify_device(acpi);
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}
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static const struct acpi_device_id cmpc_accel_device_ids[] = {
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{"ACCE0000", 0},
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{"", 0}
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};
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MODULE_DEVICE_TABLE(acpi, cmpc_accel_device_ids);
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static struct acpi_driver cmpc_accel_acpi_driver = {
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.owner = THIS_MODULE,
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.name = "cmpc_accel",
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.class = "cmpc_accel",
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.ids = cmpc_accel_device_ids,
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.ops = {
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.add = cmpc_accel_add,
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.remove = cmpc_accel_remove,
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.notify = cmpc_accel_handler,
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}
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};
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/*
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* Tablet mode code.
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*/
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static acpi_status cmpc_get_tablet(acpi_handle handle,
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unsigned long long *value)
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{
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union acpi_object param;
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struct acpi_object_list input;
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unsigned long long output;
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acpi_status status;
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param.type = ACPI_TYPE_INTEGER;
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param.integer.value = 0x01;
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input.count = 1;
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input.pointer = ¶m;
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status = acpi_evaluate_integer(handle, "TCMD", &input, &output);
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if (ACPI_SUCCESS(status))
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*value = output;
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return status;
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}
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static void cmpc_tablet_handler(struct acpi_device *dev, u32 event)
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{
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unsigned long long val = 0;
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struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
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if (event == 0x81) {
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if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val)))
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input_report_switch(inputdev, SW_TABLET_MODE, !val);
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}
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}
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static void cmpc_tablet_idev_init(struct input_dev *inputdev)
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{
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unsigned long long val = 0;
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struct acpi_device *acpi;
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set_bit(EV_SW, inputdev->evbit);
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set_bit(SW_TABLET_MODE, inputdev->swbit);
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acpi = to_acpi_device(inputdev->dev.parent);
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if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val)))
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input_report_switch(inputdev, SW_TABLET_MODE, !val);
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}
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static int cmpc_tablet_add(struct acpi_device *acpi)
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{
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return cmpc_add_acpi_notify_device(acpi, "cmpc_tablet",
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cmpc_tablet_idev_init);
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}
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static int cmpc_tablet_remove(struct acpi_device *acpi, int type)
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{
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return cmpc_remove_acpi_notify_device(acpi);
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}
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static int cmpc_tablet_resume(struct acpi_device *acpi)
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{
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struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
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unsigned long long val = 0;
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if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val)))
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input_report_switch(inputdev, SW_TABLET_MODE, !val);
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return 0;
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}
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static const struct acpi_device_id cmpc_tablet_device_ids[] = {
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{"TBLT0000", 0},
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{"", 0}
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};
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MODULE_DEVICE_TABLE(acpi, cmpc_tablet_device_ids);
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static struct acpi_driver cmpc_tablet_acpi_driver = {
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.owner = THIS_MODULE,
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.name = "cmpc_tablet",
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.class = "cmpc_tablet",
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.ids = cmpc_tablet_device_ids,
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.ops = {
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.add = cmpc_tablet_add,
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.remove = cmpc_tablet_remove,
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.resume = cmpc_tablet_resume,
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.notify = cmpc_tablet_handler,
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}
|
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};
|
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|
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|
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/*
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* Backlight code.
|
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*/
|
||||
|
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static acpi_status cmpc_get_brightness(acpi_handle handle,
|
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unsigned long long *value)
|
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{
|
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union acpi_object param;
|
||||
struct acpi_object_list input;
|
||||
unsigned long long output;
|
||||
acpi_status status;
|
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|
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param.type = ACPI_TYPE_INTEGER;
|
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param.integer.value = 0xC0;
|
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input.count = 1;
|
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input.pointer = ¶m;
|
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status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
|
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if (ACPI_SUCCESS(status))
|
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*value = output;
|
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return status;
|
||||
}
|
||||
|
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static acpi_status cmpc_set_brightness(acpi_handle handle,
|
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unsigned long long value)
|
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{
|
||||
union acpi_object param[2];
|
||||
struct acpi_object_list input;
|
||||
acpi_status status;
|
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unsigned long long output;
|
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|
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param[0].type = ACPI_TYPE_INTEGER;
|
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param[0].integer.value = 0xC0;
|
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param[1].type = ACPI_TYPE_INTEGER;
|
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param[1].integer.value = value;
|
||||
input.count = 2;
|
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input.pointer = param;
|
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status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
|
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return status;
|
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}
|
||||
|
||||
static int cmpc_bl_get_brightness(struct backlight_device *bd)
|
||||
{
|
||||
acpi_status status;
|
||||
acpi_handle handle;
|
||||
unsigned long long brightness;
|
||||
|
||||
handle = bl_get_data(bd);
|
||||
status = cmpc_get_brightness(handle, &brightness);
|
||||
if (ACPI_SUCCESS(status))
|
||||
return brightness;
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int cmpc_bl_update_status(struct backlight_device *bd)
|
||||
{
|
||||
acpi_status status;
|
||||
acpi_handle handle;
|
||||
|
||||
handle = bl_get_data(bd);
|
||||
status = cmpc_set_brightness(handle, bd->props.brightness);
|
||||
if (ACPI_SUCCESS(status))
|
||||
return 0;
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
static struct backlight_ops cmpc_bl_ops = {
|
||||
.get_brightness = cmpc_bl_get_brightness,
|
||||
.update_status = cmpc_bl_update_status
|
||||
};
|
||||
|
||||
static int cmpc_bl_add(struct acpi_device *acpi)
|
||||
{
|
||||
struct backlight_device *bd;
|
||||
|
||||
bd = backlight_device_register("cmpc_bl", &acpi->dev,
|
||||
acpi->handle, &cmpc_bl_ops);
|
||||
bd->props.max_brightness = 7;
|
||||
dev_set_drvdata(&acpi->dev, bd);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cmpc_bl_remove(struct acpi_device *acpi, int type)
|
||||
{
|
||||
struct backlight_device *bd;
|
||||
|
||||
bd = dev_get_drvdata(&acpi->dev);
|
||||
backlight_device_unregister(bd);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct acpi_device_id cmpc_device_ids[] = {
|
||||
{"IPML200", 0},
|
||||
{"", 0}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(acpi, cmpc_device_ids);
|
||||
|
||||
static struct acpi_driver cmpc_bl_acpi_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "cmpc",
|
||||
.class = "cmpc",
|
||||
.ids = cmpc_device_ids,
|
||||
.ops = {
|
||||
.add = cmpc_bl_add,
|
||||
.remove = cmpc_bl_remove
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Extra keys code.
|
||||
*/
|
||||
static int cmpc_keys_codes[] = {
|
||||
KEY_UNKNOWN,
|
||||
KEY_WLAN,
|
||||
KEY_SWITCHVIDEOMODE,
|
||||
KEY_BRIGHTNESSDOWN,
|
||||
KEY_BRIGHTNESSUP,
|
||||
KEY_VENDOR,
|
||||
KEY_MAX
|
||||
};
|
||||
|
||||
static void cmpc_keys_handler(struct acpi_device *dev, u32 event)
|
||||
{
|
||||
struct input_dev *inputdev;
|
||||
int code = KEY_MAX;
|
||||
|
||||
if ((event & 0x0F) < ARRAY_SIZE(cmpc_keys_codes))
|
||||
code = cmpc_keys_codes[event & 0x0F];
|
||||
inputdev = dev_get_drvdata(&dev->dev);;
|
||||
input_report_key(inputdev, code, !(event & 0x10));
|
||||
}
|
||||
|
||||
static void cmpc_keys_idev_init(struct input_dev *inputdev)
|
||||
{
|
||||
int i;
|
||||
|
||||
set_bit(EV_KEY, inputdev->evbit);
|
||||
for (i = 0; cmpc_keys_codes[i] != KEY_MAX; i++)
|
||||
set_bit(cmpc_keys_codes[i], inputdev->keybit);
|
||||
}
|
||||
|
||||
static int cmpc_keys_add(struct acpi_device *acpi)
|
||||
{
|
||||
return cmpc_add_acpi_notify_device(acpi, "cmpc_keys",
|
||||
cmpc_keys_idev_init);
|
||||
}
|
||||
|
||||
static int cmpc_keys_remove(struct acpi_device *acpi, int type)
|
||||
{
|
||||
return cmpc_remove_acpi_notify_device(acpi);
|
||||
}
|
||||
|
||||
static const struct acpi_device_id cmpc_keys_device_ids[] = {
|
||||
{"FnBT0000", 0},
|
||||
{"", 0}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(acpi, cmpc_keys_device_ids);
|
||||
|
||||
static struct acpi_driver cmpc_keys_acpi_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "cmpc_keys",
|
||||
.class = "cmpc_keys",
|
||||
.ids = cmpc_keys_device_ids,
|
||||
.ops = {
|
||||
.add = cmpc_keys_add,
|
||||
.remove = cmpc_keys_remove,
|
||||
.notify = cmpc_keys_handler,
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* General init/exit code.
|
||||
*/
|
||||
|
||||
static int cmpc_init(void)
|
||||
{
|
||||
int r;
|
||||
|
||||
r = acpi_bus_register_driver(&cmpc_keys_acpi_driver);
|
||||
if (r)
|
||||
goto failed_keys;
|
||||
|
||||
r = acpi_bus_register_driver(&cmpc_bl_acpi_driver);
|
||||
if (r)
|
||||
goto failed_bl;
|
||||
|
||||
r = acpi_bus_register_driver(&cmpc_tablet_acpi_driver);
|
||||
if (r)
|
||||
goto failed_tablet;
|
||||
|
||||
r = acpi_bus_register_driver(&cmpc_accel_acpi_driver);
|
||||
if (r)
|
||||
goto failed_accel;
|
||||
|
||||
return r;
|
||||
|
||||
failed_accel:
|
||||
acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
|
||||
|
||||
failed_tablet:
|
||||
acpi_bus_unregister_driver(&cmpc_bl_acpi_driver);
|
||||
|
||||
failed_bl:
|
||||
acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
|
||||
|
||||
failed_keys:
|
||||
return r;
|
||||
}
|
||||
|
||||
static void cmpc_exit(void)
|
||||
{
|
||||
acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
|
||||
acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
|
||||
acpi_bus_unregister_driver(&cmpc_bl_acpi_driver);
|
||||
acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
|
||||
}
|
||||
|
||||
module_init(cmpc_init);
|
||||
module_exit(cmpc_exit);
|
||||
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