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Subject[PATCH 1/5] topstar-laptop - switch to using sparse keymap library
Date
Instead of implementing its own version of keymap hanlding switch over to
using sparse keymap library.

Acked-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/platform/x86/Kconfig | 1
drivers/platform/x86/topstar-laptop.c | 161 +++++++++++----------------------
2 files changed, 55 insertions(+), 107 deletions(-)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 79baa63..63d68e7 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -471,6 +471,7 @@ config TOPSTAR_LAPTOP
tristate "Topstar Laptop Extras"
depends on ACPI
depends on INPUT
+ select INPUT_SPARSEKMAP
---help---
This driver adds support for hotkeys found on Topstar laptops.

diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c
index ff4b476..1d07d6d 100644
--- a/drivers/platform/x86/topstar-laptop.c
+++ b/drivers/platform/x86/topstar-laptop.c
@@ -19,6 +19,7 @@
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>

#define ACPI_TOPSTAR_CLASS "topstar"

@@ -26,52 +27,37 @@ struct topstar_hkey {
struct input_dev *inputdev;
};

-struct tps_key_entry {
- u8 code;
- u16 keycode;
-};
-
-static struct tps_key_entry topstar_keymap[] = {
- { 0x80, KEY_BRIGHTNESSUP },
- { 0x81, KEY_BRIGHTNESSDOWN },
- { 0x83, KEY_VOLUMEUP },
- { 0x84, KEY_VOLUMEDOWN },
- { 0x85, KEY_MUTE },
- { 0x86, KEY_SWITCHVIDEOMODE },
- { 0x87, KEY_F13 }, /* touchpad enable/disable key */
- { 0x88, KEY_WLAN },
- { 0x8a, KEY_WWW },
- { 0x8b, KEY_MAIL },
- { 0x8c, KEY_MEDIA },
- { 0x96, KEY_F14 }, /* G key? */
- { }
-};
-
-static struct tps_key_entry *tps_get_key_by_scancode(unsigned int code)
-{
- struct tps_key_entry *key;
-
- for (key = topstar_keymap; key->code; key++)
- if (code == key->code)
- return key;
+static const struct key_entry topstar_keymap[] = {
+ { KE_KEY, 0x80, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x81, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x83, { KEY_VOLUMEUP } },
+ { KE_KEY, 0x84, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0x85, { KEY_MUTE } },
+ { KE_KEY, 0x86, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x87, { KEY_F13 } }, /* touchpad enable/disable key */
+ { KE_KEY, 0x88, { KEY_WLAN } },
+ { KE_KEY, 0x8a, { KEY_WWW } },
+ { KE_KEY, 0x8b, { KEY_MAIL } },
+ { KE_KEY, 0x8c, { KEY_MEDIA } },

- return NULL;
-}
-
-static struct tps_key_entry *tps_get_key_by_keycode(unsigned int code)
-{
- struct tps_key_entry *key;
+ /* Known non hotkey events don't handled or that we don't care yet */
+ { KE_IGNORE, 0x8e, },
+ { KE_IGNORE, 0x8f, },
+ { KE_IGNORE, 0x90, },

- for (key = topstar_keymap; key->code; key++)
- if (code == key->keycode)
- return key;
+ /*
+ * 'G key' generate two event codes, convert to only
+ * one event/key code for now, consider replacing by
+ * a switch (3G switch - SW_3G?)
+ */
+ { KE_KEY, 0x96, { KEY_F14 } },
+ { KE_KEY, 0x97, { KEY_F14 } },

- return NULL;
-}
+ { KE_END, 0 }
+};

static void acpi_topstar_notify(struct acpi_device *device, u32 event)
{
- struct tps_key_entry *key;
static bool dup_evnt[2];
bool *dup;
struct topstar_hkey *hkey = acpi_driver_data(device);
@@ -86,27 +72,8 @@ static void acpi_topstar_notify(struct acpi_device *device, u32 event)
*dup = true;
}

- /*
- * 'G key' generate two event codes, convert to only
- * one event/key code for now (3G switch?)
- */
- if (event == 0x97)
- event = 0x96;
-
- key = tps_get_key_by_scancode(event);
- if (key) {
- input_report_key(hkey->inputdev, key->keycode, 1);
- input_sync(hkey->inputdev);
- input_report_key(hkey->inputdev, key->keycode, 0);
- input_sync(hkey->inputdev);
- return;
- }
-
- /* Known non hotkey events don't handled or that we don't care yet */
- if (event == 0x8e || event == 0x8f || event == 0x90)
- return;
-
- pr_info("unknown event = 0x%02x\n", event);
+ if (!sparse_keymap_report_event(hkey->inputdev, event, 1, true))
+ pr_info("unknown event = 0x%02x\n", event);
}

static int acpi_topstar_fncx_switch(struct acpi_device *device, bool state)
@@ -127,62 +94,41 @@ static int acpi_topstar_fncx_switch(struct acpi_device *device, bool state)
return 0;
}

-static int topstar_getkeycode(struct input_dev *dev,
- unsigned int scancode, unsigned int *keycode)
-{
- struct tps_key_entry *key = tps_get_key_by_scancode(scancode);
-
- if (!key)
- return -EINVAL;
-
- *keycode = key->keycode;
- return 0;
-}
-
-static int topstar_setkeycode(struct input_dev *dev,
- unsigned int scancode, unsigned int keycode)
-{
- struct tps_key_entry *key;
- int old_keycode;
-
- key = tps_get_key_by_scancode(scancode);
-
- if (!key)
- return -EINVAL;
-
- old_keycode = key->keycode;
- key->keycode = keycode;
- set_bit(keycode, dev->keybit);
- if (!tps_get_key_by_keycode(old_keycode))
- clear_bit(old_keycode, dev->keybit);
- return 0;
-}
-
static int acpi_topstar_init_hkey(struct topstar_hkey *hkey)
{
- struct tps_key_entry *key;
+ struct input_dev *input;
+ int error;

- hkey->inputdev = input_allocate_device();
- if (!hkey->inputdev) {
+ input = input_allocate_device();
+ if (!input) {
pr_err("Unable to allocate input device\n");
- return -ENODEV;
+ return -ENOMEM;
}
- hkey->inputdev->name = "Topstar Laptop extra buttons";
- hkey->inputdev->phys = "topstar/input0";
- hkey->inputdev->id.bustype = BUS_HOST;
- hkey->inputdev->getkeycode = topstar_getkeycode;
- hkey->inputdev->setkeycode = topstar_setkeycode;
- for (key = topstar_keymap; key->code; key++) {
- set_bit(EV_KEY, hkey->inputdev->evbit);
- set_bit(key->keycode, hkey->inputdev->keybit);
+
+ input->name = "Topstar Laptop extra buttons";
+ input->phys = "topstar/input0";
+ input->id.bustype = BUS_HOST;
+
+ error = sparse_keymap_setup(input, topstar_keymap, NULL);
+ if (error) {
+ pr_err("Unable to setup input device keymap\n");
+ goto err_free_dev;
}
- if (input_register_device(hkey->inputdev)) {
+
+ error = input_register_device(input);
+ if (error) {
pr_err("Unable to register input device\n");
- input_free_device(hkey->inputdev);
- return -ENODEV;
+ goto err_free_keymap;
}

+ hkey->inputdev = input;
return 0;
+
+ err_free_keymap:
+ sparse_keymap_free(input);
+ err_free_dev:
+ input_free_device(input);
+ return error;
}

static int acpi_topstar_add(struct acpi_device *device)
@@ -216,6 +162,7 @@ static int acpi_topstar_remove(struct acpi_device *device, int type)

acpi_topstar_fncx_switch(device, false);

+ sparse_keymap_free(tps_hkey->inputdev);
input_unregister_device(tps_hkey->inputdev);
kfree(tps_hkey);



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