ideapad: add platform driver for ideapad
Create /sys/devices/platform/ideapad for nodes of ideapad landing. Signed-off-by: Ike Panhc <ike.pan@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>hifive-unleashed-5.1
parent
9c23225006
commit
98ee69191d
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@ -27,6 +27,7 @@
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_drivers.h>
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#include <linux/rfkill.h>
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#include <linux/rfkill.h>
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#include <linux/platform_device.h>
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#define IDEAPAD_DEV_CAMERA 0
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#define IDEAPAD_DEV_CAMERA 0
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#define IDEAPAD_DEV_WLAN 1
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#define IDEAPAD_DEV_WLAN 1
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@ -37,6 +38,7 @@
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struct ideapad_private {
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struct ideapad_private {
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acpi_handle handle;
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acpi_handle handle;
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struct rfkill *rfk[5];
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struct rfkill *rfk[5];
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struct platform_device *platform_device;
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} *ideapad_priv;
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} *ideapad_priv;
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static struct {
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static struct {
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@ -277,6 +279,35 @@ static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
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rfkill_destroy(priv->rfk[dev]);
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rfkill_destroy(priv->rfk[dev]);
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}
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}
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/*
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* Platform device
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*/
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static int __devinit ideapad_platform_init(void)
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{
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int result;
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ideapad_priv->platform_device = platform_device_alloc("ideapad", -1);
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if (!ideapad_priv->platform_device)
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return -ENOMEM;
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platform_set_drvdata(ideapad_priv->platform_device, ideapad_priv);
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result = platform_device_add(ideapad_priv->platform_device);
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if (result)
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goto fail_platform_device;
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return 0;
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fail_platform_device:
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platform_device_put(ideapad_priv->platform_device);
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return result;
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}
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static void ideapad_platform_exit(void)
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{
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platform_device_unregister(ideapad_priv->platform_device);
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}
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/* the above is platform device */
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static const struct acpi_device_id ideapad_device_ids[] = {
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static const struct acpi_device_id ideapad_device_ids[] = {
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{ "VPC2004", 0},
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{ "VPC2004", 0},
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{ "", 0},
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{ "", 0},
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@ -285,7 +316,7 @@ MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
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static int ideapad_acpi_add(struct acpi_device *adevice)
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static int ideapad_acpi_add(struct acpi_device *adevice)
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{
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{
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int i, cfg;
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int ret, i, cfg;
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int devs_present[5];
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int devs_present[5];
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struct ideapad_private *priv;
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struct ideapad_private *priv;
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@ -305,18 +336,20 @@ static int ideapad_acpi_add(struct acpi_device *adevice)
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (!priv)
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if (!priv)
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return -ENOMEM;
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return -ENOMEM;
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ideapad_priv = priv;
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ret = ideapad_platform_init();
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if (ret)
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goto platform_failed;
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if (devs_present[IDEAPAD_DEV_CAMERA]) {
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if (devs_present[IDEAPAD_DEV_CAMERA]) {
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int ret = device_create_file(&adevice->dev, &dev_attr_camera_power);
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ret = device_create_file(&adevice->dev, &dev_attr_camera_power);
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if (ret) {
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if (ret)
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kfree(priv);
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goto camera_failed;
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return ret;
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}
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}
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}
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priv->handle = adevice->handle;
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priv->handle = adevice->handle;
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dev_set_drvdata(&adevice->dev, priv);
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dev_set_drvdata(&adevice->dev, priv);
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ideapad_priv = priv;
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for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) {
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for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) {
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if (!devs_present[i])
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if (!devs_present[i])
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continue;
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continue;
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@ -325,6 +358,12 @@ static int ideapad_acpi_add(struct acpi_device *adevice)
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}
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}
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ideapad_sync_rfk_state(adevice);
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ideapad_sync_rfk_state(adevice);
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return 0;
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return 0;
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camera_failed:
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ideapad_platform_exit();
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platform_failed:
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kfree(priv);
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return ret;
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}
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}
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static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
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static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
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@ -337,6 +376,7 @@ static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
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for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
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for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
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ideapad_unregister_rfkill(adevice, i);
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ideapad_unregister_rfkill(adevice, i);
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ideapad_platform_exit();
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dev_set_drvdata(&adevice->dev, NULL);
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dev_set_drvdata(&adevice->dev, NULL);
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kfree(priv);
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kfree(priv);
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return 0;
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return 0;
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