forked from Minki/linux
eeepc-laptop: Use standard interfaces
eeepc-laptop currently only sends key events via ACPI and has non-standard rfkill control. Add an input device and use the rfkill infrastructure. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Matthew Garrett
Len Brown
parent
3fa8749e58
commit
a195dcdcff
@ -28,6 +28,8 @@
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#include <linux/uaccess.h>
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#include <linux/input.h>
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#include <linux/rfkill.h>
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#define EEEPC_LAPTOP_VERSION "0.1"
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@ -125,6 +127,10 @@ struct eeepc_hotk {
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by this BIOS */
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uint init_flag; /* Init flags */
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u16 event_count[128]; /* count for each event */
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struct input_dev *inputdev;
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u16 *keycode_map;
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struct rfkill *eeepc_wlan_rfkill;
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struct rfkill *eeepc_bluetooth_rfkill;
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};
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/* The actual device the driver binds to */
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@ -140,6 +146,27 @@ static struct platform_driver platform_driver = {
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static struct platform_device *platform_device;
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struct key_entry {
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char type;
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u8 code;
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u16 keycode;
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};
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enum { KE_KEY, KE_END };
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static struct key_entry eeepc_keymap[] = {
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/* Sleep already handled via generic ACPI code */
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{KE_KEY, 0x10, KEY_WLAN },
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{KE_KEY, 0x12, KEY_PROG1 },
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{KE_KEY, 0x13, KEY_MUTE },
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{KE_KEY, 0x14, KEY_VOLUMEDOWN },
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{KE_KEY, 0x15, KEY_VOLUMEUP },
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{KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
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{KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
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{KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
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{KE_END, 0},
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};
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/*
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* The hotkey driver declaration
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*/
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@ -260,6 +287,44 @@ static int update_bl_status(struct backlight_device *bd)
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return set_brightness(bd, bd->props.brightness);
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}
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/*
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* Rfkill helpers
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*/
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static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state)
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{
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if (state == RFKILL_STATE_SOFT_BLOCKED)
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return set_acpi(CM_ASL_WLAN, 0);
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else
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return set_acpi(CM_ASL_WLAN, 1);
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}
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static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state)
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{
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if (get_acpi(CM_ASL_WLAN) == 1)
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*state = RFKILL_STATE_UNBLOCKED;
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else
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*state = RFKILL_STATE_SOFT_BLOCKED;
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return 0;
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}
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static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state)
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{
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if (state == RFKILL_STATE_SOFT_BLOCKED)
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return set_acpi(CM_ASL_BLUETOOTH, 0);
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else
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return set_acpi(CM_ASL_BLUETOOTH, 1);
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}
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static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state)
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{
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if (get_acpi(CM_ASL_BLUETOOTH) == 1)
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*state = RFKILL_STATE_UNBLOCKED;
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else
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*state = RFKILL_STATE_SOFT_BLOCKED;
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return 0;
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}
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/*
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* Sys helpers
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*/
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@ -311,13 +376,11 @@ static ssize_t show_sys_acpi(int cm, char *buf)
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EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
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EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
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EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
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EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN);
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static struct attribute *platform_attributes[] = {
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&dev_attr_camera.attr,
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&dev_attr_cardr.attr,
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&dev_attr_disp.attr,
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&dev_attr_wlan.attr,
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NULL
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};
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@ -328,8 +391,64 @@ static struct attribute_group platform_attribute_group = {
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/*
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* Hotkey functions
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*/
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static struct key_entry *eepc_get_entry_by_scancode(int code)
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{
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struct key_entry *key;
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for (key = eeepc_keymap; key->type != KE_END; key++)
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if (code == key->code)
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return key;
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return NULL;
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}
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static struct key_entry *eepc_get_entry_by_keycode(int code)
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{
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struct key_entry *key;
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for (key = eeepc_keymap; key->type != KE_END; key++)
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if (code == key->keycode && key->type == KE_KEY)
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return key;
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return NULL;
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}
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static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
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{
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struct key_entry *key = eepc_get_entry_by_scancode(scancode);
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if (key && key->type == KE_KEY) {
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*keycode = key->keycode;
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return 0;
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}
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return -EINVAL;
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}
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static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
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{
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struct key_entry *key;
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int old_keycode;
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if (keycode < 0 || keycode > KEY_MAX)
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return -EINVAL;
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key = eepc_get_entry_by_scancode(scancode);
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if (key && key->type == KE_KEY) {
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old_keycode = key->keycode;
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key->keycode = keycode;
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set_bit(keycode, dev->keybit);
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if (!eepc_get_entry_by_keycode(old_keycode))
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clear_bit(old_keycode, dev->keybit);
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return 0;
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}
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return -EINVAL;
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}
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static int eeepc_hotk_check(void)
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{
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const struct key_entry *key;
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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int result;
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@ -356,6 +475,31 @@ static int eeepc_hotk_check(void)
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"Get control methods supported: 0x%x\n",
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ehotk->cm_supported);
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}
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ehotk->inputdev = input_allocate_device();
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if (!ehotk->inputdev) {
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printk(EEEPC_INFO "Unable to allocate input device\n");
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return 0;
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}
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ehotk->inputdev->name = "Asus EeePC extra buttons";
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ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
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ehotk->inputdev->id.bustype = BUS_HOST;
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ehotk->inputdev->getkeycode = eeepc_getkeycode;
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ehotk->inputdev->setkeycode = eeepc_setkeycode;
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for (key = eeepc_keymap; key->type != KE_END; key++) {
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switch (key->type) {
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case KE_KEY:
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set_bit(EV_KEY, ehotk->inputdev->evbit);
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set_bit(key->keycode, ehotk->inputdev->keybit);
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break;
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}
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}
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result = input_register_device(ehotk->inputdev);
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if (result) {
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printk(EEEPC_INFO "Unable to register input device\n");
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input_free_device(ehotk->inputdev);
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return 0;
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}
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} else {
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printk(EEEPC_ERR "Hotkey device not present, aborting\n");
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return -EINVAL;
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@ -363,21 +507,6 @@ static int eeepc_hotk_check(void)
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return 0;
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}
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static void notify_wlan(u32 *event)
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{
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/* if DISABLE_ASL_WLAN is set, the notify code for fn+f2
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will always be 0x10 */
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if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) {
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const char *method = cm_getv[CM_ASL_WLAN];
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int value;
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if (read_acpi_int(ehotk->handle, method, &value))
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printk(EEEPC_WARNING "Error reading %s\n",
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method);
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else if (value == 1)
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*event = 0x11;
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}
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}
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static void notify_brn(void)
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{
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struct backlight_device *bd = eeepc_backlight_device;
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@ -386,14 +515,28 @@ static void notify_brn(void)
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static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
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{
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static struct key_entry *key;
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if (!ehotk)
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return;
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if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & ehotk->init_flag))
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notify_wlan(&event);
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if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
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notify_brn();
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acpi_bus_generate_proc_event(ehotk->device, event,
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ehotk->event_count[event % 128]++);
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if (ehotk->inputdev) {
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key = eepc_get_entry_by_scancode(event);
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if (key) {
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switch (key->type) {
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case KE_KEY:
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input_report_key(ehotk->inputdev, key->keycode,
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1);
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input_sync(ehotk->inputdev);
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input_report_key(ehotk->inputdev, key->keycode,
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0);
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input_sync(ehotk->inputdev);
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break;
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}
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}
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}
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}
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static int eeepc_hotk_add(struct acpi_device *device)
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@ -420,6 +563,47 @@ static int eeepc_hotk_add(struct acpi_device *device)
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eeepc_hotk_notify, ehotk);
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if (ACPI_FAILURE(status))
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printk(EEEPC_ERR "Error installing notify handler\n");
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if (get_acpi(CM_ASL_WLAN) != -1) {
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ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
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RFKILL_TYPE_WLAN);
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if (!ehotk->eeepc_wlan_rfkill)
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goto end;
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ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
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ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
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ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
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if (get_acpi(CM_ASL_WLAN) == 1)
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ehotk->eeepc_wlan_rfkill->state =
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RFKILL_STATE_UNBLOCKED;
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else
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ehotk->eeepc_wlan_rfkill->state =
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RFKILL_STATE_SOFT_BLOCKED;
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rfkill_register(ehotk->eeepc_wlan_rfkill);
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}
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if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
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ehotk->eeepc_bluetooth_rfkill =
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rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
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if (!ehotk->eeepc_bluetooth_rfkill)
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goto end;
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ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
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ehotk->eeepc_bluetooth_rfkill->toggle_radio =
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eeepc_bluetooth_rfkill_set;
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ehotk->eeepc_bluetooth_rfkill->get_state =
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eeepc_bluetooth_rfkill_state;
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if (get_acpi(CM_ASL_BLUETOOTH) == 1)
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ehotk->eeepc_bluetooth_rfkill->state =
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RFKILL_STATE_UNBLOCKED;
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else
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ehotk->eeepc_bluetooth_rfkill->state =
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RFKILL_STATE_SOFT_BLOCKED;
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rfkill_register(ehotk->eeepc_bluetooth_rfkill);
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}
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end:
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if (result) {
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kfree(ehotk);
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@ -553,6 +737,12 @@ static void eeepc_backlight_exit(void)
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{
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if (eeepc_backlight_device)
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backlight_device_unregister(eeepc_backlight_device);
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if (ehotk->inputdev)
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input_unregister_device(ehotk->inputdev);
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if (ehotk->eeepc_wlan_rfkill)
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rfkill_unregister(ehotk->eeepc_wlan_rfkill);
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if (ehotk->eeepc_bluetooth_rfkill)
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rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
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eeepc_backlight_device = NULL;
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}
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