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platform/x86: topstar-laptop: add platform device
* add a platform device to support further addition of a led subsystem, * register the existing input device to this platform device. Signed-off-by: Guillaume Douézan-Grard <gdouezangrard@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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3093ced236
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2c531437dd
1 changed files with 58 additions and 3 deletions
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@ -1,5 +1,5 @@
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/*
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* ACPI driver for Topstar notebooks (hotkeys support only)
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* Topstar Laptop ACPI Extras driver
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*
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* Copyright (c) 2009 Herton Ronaldo Krzesinski <herton@mandriva.com.br>
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*
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@ -20,11 +20,13 @@
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#include <linux/acpi.h>
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#include <linux/input.h>
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#include <linux/input/sparse-keymap.h>
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#include <linux/platform_device.h>
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#define TOPSTAR_LAPTOP_CLASS "topstar"
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struct topstar_laptop {
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struct acpi_device *device;
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struct platform_device *platform;
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struct input_dev *input;
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};
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@ -80,6 +82,7 @@ static int topstar_input_init(struct topstar_laptop *topstar)
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input->name = "Topstar Laptop extra buttons";
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input->phys = TOPSTAR_LAPTOP_CLASS "/input0";
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input->id.bustype = BUS_HOST;
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input->dev.parent = &topstar->platform->dev;
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err = sparse_keymap_setup(input, topstar_keymap, NULL);
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if (err) {
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@ -106,6 +109,42 @@ static void topstar_input_exit(struct topstar_laptop *topstar)
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input_unregister_device(topstar->input);
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}
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/*
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* Platform
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*/
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static struct platform_driver topstar_platform_driver = {
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.driver = {
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.name = TOPSTAR_LAPTOP_CLASS,
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},
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};
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static int topstar_platform_init(struct topstar_laptop *topstar)
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{
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int err;
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topstar->platform = platform_device_alloc(TOPSTAR_LAPTOP_CLASS, -1);
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if (!topstar->platform)
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return -ENOMEM;
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platform_set_drvdata(topstar->platform, topstar);
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err = platform_device_add(topstar->platform);
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if (err)
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goto err_device_put;
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return 0;
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err_device_put:
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platform_device_put(topstar->platform);
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return err;
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}
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static void topstar_platform_exit(struct topstar_laptop *topstar)
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{
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platform_device_unregister(topstar->platform);
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}
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/*
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* ACPI
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*/
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@ -171,12 +210,18 @@ static int topstar_acpi_add(struct acpi_device *device)
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if (err)
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goto err_free;
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err = topstar_input_init(topstar);
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err = topstar_platform_init(topstar);
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if (err)
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goto err_acpi_exit;
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err = topstar_input_init(topstar);
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if (err)
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goto err_platform_exit;
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return 0;
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err_platform_exit:
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topstar_platform_exit(topstar);
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err_acpi_exit:
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topstar_acpi_exit(topstar);
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err_free:
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@ -189,6 +234,7 @@ static int topstar_acpi_remove(struct acpi_device *device)
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struct topstar_laptop *topstar = acpi_driver_data(device);
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topstar_input_exit(topstar);
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topstar_platform_exit(topstar);
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topstar_acpi_exit(topstar);
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kfree(topstar);
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@ -217,17 +263,26 @@ static int __init topstar_laptop_init(void)
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{
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int ret;
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ret = acpi_bus_register_driver(&topstar_acpi_driver);
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ret = platform_driver_register(&topstar_platform_driver);
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if (ret < 0)
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return ret;
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ret = acpi_bus_register_driver(&topstar_acpi_driver);
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if (ret < 0)
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goto err_driver_unreg;
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pr_info("ACPI extras driver loaded\n");
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return 0;
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err_driver_unreg:
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platform_driver_unregister(&topstar_platform_driver);
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return ret;
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}
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static void __exit topstar_laptop_exit(void)
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{
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acpi_bus_unregister_driver(&topstar_acpi_driver);
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platform_driver_unregister(&topstar_platform_driver);
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}
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module_init(topstar_laptop_init);
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