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platform/x86: hp_accel: Convert to be a platform driver
ACPI core in conjunction with platform driver core provides an infrastructure to enumerate ACPI devices. Use it in order to remove a lot of boilerplate code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20210823093222.19544-3-andriy.shevchenko@linux.intel.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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1 changed files with 14 additions and 50 deletions
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@ -28,9 +28,6 @@
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#include <linux/serio.h>
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#include "../../misc/lis3lv02d/lis3lv02d.h"
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#define DRIVER_NAME "hp_accel"
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#define ACPI_MDPS_CLASS "accelerometer"
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/* Delayed LEDs infrastructure ------------------------------------ */
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/* Special LED class that can defer work */
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@ -269,30 +266,6 @@ static struct delayed_led_classdev hpled_led = {
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.set_brightness = hpled_set,
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};
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static acpi_status
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lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
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{
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if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
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struct acpi_resource_extended_irq *irq;
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u32 *device_irq = context;
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irq = &resource->data.extended_irq;
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*device_irq = irq->interrupts[0];
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}
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return AE_OK;
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}
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static void lis3lv02d_enum_resources(struct acpi_device *device)
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{
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acpi_status status;
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status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
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lis3lv02d_get_resource, &lis3_dev.irq);
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if (ACPI_FAILURE(status))
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printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
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}
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static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
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struct serio *port)
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{
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@ -322,23 +295,19 @@ static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
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return false;
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}
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static int lis3lv02d_add(struct acpi_device *device)
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static int lis3lv02d_probe(struct platform_device *device)
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{
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int ret;
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if (!device)
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return -EINVAL;
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lis3_dev.bus_priv = device;
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lis3_dev.bus_priv = ACPI_COMPANION(&device->dev);
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lis3_dev.init = lis3lv02d_acpi_init;
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lis3_dev.read = lis3lv02d_acpi_read;
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lis3_dev.write = lis3lv02d_acpi_write;
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strcpy(acpi_device_name(device), DRIVER_NAME);
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strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
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device->driver_data = &lis3_dev;
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/* obtain IRQ number of our device from ACPI */
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lis3lv02d_enum_resources(device);
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ret = platform_get_irq_optional(device, 0);
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if (ret > 0)
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lis3_dev.irq = ret;
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/* If possible use a "standard" axes order */
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if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
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@ -371,11 +340,8 @@ static int lis3lv02d_add(struct acpi_device *device)
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return ret;
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}
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static int lis3lv02d_remove(struct acpi_device *device)
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static int lis3lv02d_remove(struct platform_device *device)
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{
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if (!device)
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return -EINVAL;
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i8042_remove_filter(hp_accel_i8042_filter);
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lis3lv02d_joystick_disable(&lis3_dev);
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lis3lv02d_poweroff(&lis3_dev);
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@ -386,7 +352,6 @@ static int lis3lv02d_remove(struct acpi_device *device)
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return lis3lv02d_remove_fs(&lis3_dev);
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}
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#ifdef CONFIG_PM_SLEEP
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static int lis3lv02d_suspend(struct device *dev)
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{
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@ -422,17 +387,16 @@ static const struct dev_pm_ops hp_accel_pm = {
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#endif
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/* For the HP MDPS aka 3D Driveguard */
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static struct acpi_driver lis3lv02d_driver = {
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.name = DRIVER_NAME,
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.class = ACPI_MDPS_CLASS,
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.ids = lis3lv02d_device_ids,
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.ops = {
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.add = lis3lv02d_add,
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.remove = lis3lv02d_remove,
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static struct platform_driver lis3lv02d_driver = {
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.probe = lis3lv02d_probe,
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.remove = lis3lv02d_remove,
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.driver = {
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.name = "hp_accel",
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.pm = HP_ACCEL_PM,
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.acpi_match_table = lis3lv02d_device_ids,
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},
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.drv.pm = HP_ACCEL_PM,
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};
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module_acpi_driver(lis3lv02d_driver);
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module_platform_driver(lis3lv02d_driver);
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MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
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MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
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