235 lines
6.4 KiB
Diff
235 lines
6.4 KiB
Diff
From: Ben Hutchings <ben@decadent.org.uk>
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Date: Mon, 17 Oct 2011 04:13:27 +0100
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Subject: [PATCH] x86: Add amilo-rfkill driver for some Fujitsu-Siemens Amilo
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laptops
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An rfkill driver based on the fsaa1655g and fsam7440 drivers for
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Fujitsu-Siemens Amilo A1655 and M7440 models found at:
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http://sourceforge.net/projects/fsaa1655g/
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http://sourceforge.net/projects/fsam7440/
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This adds DMI matching, replaces the procfs files with rfkill devices,
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and uses the proper function to write to the i8042 safely.
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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---
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drivers/platform/x86/Kconfig | 7 ++
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drivers/platform/x86/Makefile | 1 +
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drivers/platform/x86/amilo-rfkill.c | 173 +++++++++++++++++++++++++++++++++++
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3 files changed, 181 insertions(+), 0 deletions(-)
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create mode 100644 drivers/platform/x86/amilo-rfkill.c
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diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
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index 7f43cf8..cb2c255 100644
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--- a/drivers/platform/x86/Kconfig
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+++ b/drivers/platform/x86/Kconfig
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@@ -143,6 +143,13 @@ config FUJITSU_LAPTOP_DEBUG
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If you are not sure, say N here.
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+config AMILO_RFKILL
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+ tristate "Fujitsu-Siemens Amilo rfkill support"
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+ depends on RFKILL
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+ ---help---
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+ This is a driver for enabling wifi on some Fujitsu-Siemens Amilo
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+ laptops.
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+
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config TC1100_WMI
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tristate "HP Compaq TC1100 Tablet WMI Extras (EXPERIMENTAL)"
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depends on !X86_64
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diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
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index 293a320..3acbaad 100644
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--- a/drivers/platform/x86/Makefile
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+++ b/drivers/platform/x86/Makefile
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@@ -17,6 +17,7 @@ obj-$(CONFIG_ACER_WMI) += acer-wmi.o
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obj-$(CONFIG_ACERHDF) += acerhdf.o
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obj-$(CONFIG_HP_ACCEL) += hp_accel.o
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obj-$(CONFIG_HP_WMI) += hp-wmi.o
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+obj-$(CONFIG_AMILO_RFKILL) += amilo-rfkill.o
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obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
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obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
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obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
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diff --git a/drivers/platform/x86/amilo-rfkill.c b/drivers/platform/x86/amilo-rfkill.c
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new file mode 100644
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index 0000000..19170bb
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--- /dev/null
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+++ b/drivers/platform/x86/amilo-rfkill.c
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@@ -0,0 +1,173 @@
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+/*
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+ * Support for rfkill on some Fujitsu-Siemens Amilo laptops.
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+ * Copyright 2011 Ben Hutchings.
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+ *
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+ * Based in part on the fsam7440 driver, which is:
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+ * Copyright 2005 Alejandro Vidal Mata & Javier Vidal Mata.
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+ * and on the fsaa1655g driver, which is:
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+ * Copyright 2006 Martin Večeřa.
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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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+
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+#include <linux/module.h>
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+#include <linux/dmi.h>
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+#include <linux/i8042.h>
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+#include <linux/io.h>
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+#include <linux/moduleparam.h>
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+#include <linux/platform_device.h>
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+#include <linux/rfkill.h>
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+
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+/*
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+ * These values were obtained from disassembling and debugging the
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+ * PM.exe program installed in the Fujitsu-Siemens AMILO A1655G
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+ */
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+#define A1655_WIFI_COMMAND 0x10C5
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+#define A1655_WIFI_ON 0x25
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+#define A1655_WIFI_OFF 0x45
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+
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+static int amilo_a1655_rfkill_set_block(void *data, bool blocked)
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+{
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+ u8 param = blocked ? A1655_WIFI_OFF : A1655_WIFI_ON;
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+ int rc;
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+
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+ i8042_lock_chip();
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+ rc = i8042_command(¶m, A1655_WIFI_COMMAND);
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+ i8042_unlock_chip();
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+ return rc;
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+}
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+
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+static const struct rfkill_ops amilo_a1655_rfkill_ops = {
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+ .set_block = amilo_a1655_rfkill_set_block
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+};
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+
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+/*
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+ * These values were obtained from disassembling the PM.exe program
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+ * installed in the Fujitsu-Siemens AMILO M 7440
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+ */
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+#define M7440_PORT1 0x118f
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+#define M7440_PORT2 0x118e
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+#define M7440_RADIO_ON1 0x12
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+#define M7440_RADIO_ON2 0x80
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+#define M7440_RADIO_OFF1 0x10
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+#define M7440_RADIO_OFF2 0x00
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+
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+static int amilo_m7440_rfkill_set_block(void *data, bool blocked)
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+{
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+ u8 val1 = blocked ? M7440_RADIO_OFF1 : M7440_RADIO_ON1;
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+ u8 val2 = blocked ? M7440_RADIO_OFF2 : M7440_RADIO_ON2;
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+
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+ outb(val1, M7440_PORT1);
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+ outb(val2, M7440_PORT2);
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+
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+ /* Check whether the state has changed correctly */
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+ if (inb(M7440_PORT1) != val1 || inb(M7440_PORT2) != val2)
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+ return -EIO;
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+
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+ return 0;
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+}
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+
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+static const struct rfkill_ops amilo_m7440_rfkill_ops = {
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+ .set_block = amilo_m7440_rfkill_set_block
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+};
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+
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+static const struct dmi_system_id __devinitdata amilo_rfkill_id_table[] = {
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+ {
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+ .matches = {
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+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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+ DMI_MATCH(DMI_BOARD_NAME, "AMILO A1655"),
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+ },
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+ .driver_data = (void *)&amilo_a1655_rfkill_ops
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+ },
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+ {
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+ .matches = {
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+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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+ DMI_MATCH(DMI_BOARD_NAME, "AMILO M7440"),
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+ },
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+ .driver_data = (void *)&amilo_m7440_rfkill_ops
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+ },
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+ {}
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+};
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+
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+static struct platform_device *amilo_rfkill_pdev;
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+static struct rfkill *amilo_rfkill_dev;
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+
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+static int __devinit amilo_rfkill_probe(struct platform_device *device)
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+{
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+ const struct dmi_system_id *system_id =
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+ dmi_first_match(amilo_rfkill_id_table);
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+ int rc;
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+
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+ amilo_rfkill_dev = rfkill_alloc(KBUILD_MODNAME, &device->dev,
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+ RFKILL_TYPE_WLAN,
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+ system_id->driver_data, NULL);
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+ if (!amilo_rfkill_dev)
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+ return -ENOMEM;
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+
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+ rc = rfkill_register(amilo_rfkill_dev);
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+ if (rc)
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+ goto fail;
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+
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+ return 0;
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+
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+fail:
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+ rfkill_destroy(amilo_rfkill_dev);
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+ return rc;
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+}
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+
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+static int amilo_rfkill_remove(struct platform_device *device)
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+{
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+ rfkill_unregister(amilo_rfkill_dev);
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+ rfkill_destroy(amilo_rfkill_dev);
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+ return 0;
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+}
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+
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+static struct platform_driver amilo_rfkill_driver = {
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+ .driver = {
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+ .name = KBUILD_MODNAME,
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+ .owner = THIS_MODULE,
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+ },
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+ .probe = amilo_rfkill_probe,
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+ .remove = amilo_rfkill_remove,
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+};
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+
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+static int __init amilo_rfkill_init(void)
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+{
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+ int rc;
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+
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+ if (dmi_first_match(amilo_rfkill_id_table) == NULL)
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+ return -ENODEV;
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+
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+ rc = platform_driver_register(&amilo_rfkill_driver);
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+ if (rc)
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+ return rc;
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+
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+ amilo_rfkill_pdev = platform_device_register_simple(KBUILD_MODNAME, -1,
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+ NULL, 0);
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+ if (IS_ERR(amilo_rfkill_pdev)) {
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+ rc = PTR_ERR(amilo_rfkill_pdev);
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+ goto fail;
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+ }
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+
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+ return 0;
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+
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+fail:
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+ platform_driver_unregister(&amilo_rfkill_driver);
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+ return rc;
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+}
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+
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+static void __exit amilo_rfkill_exit(void)
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+{
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+ platform_device_unregister(amilo_rfkill_pdev);
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+ platform_driver_unregister(&amilo_rfkill_driver);
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+}
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+
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+MODULE_AUTHOR("Ben Hutchings <ben@decadent.org.uk>");
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+MODULE_LICENSE("GPL");
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+MODULE_DEVICE_TABLE(dmi, amilo_rfkill_id_table);
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+
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+module_init(amilo_rfkill_init);
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+module_exit(amilo_rfkill_exit);
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--
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1.7.7.3
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