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Date: Thu, 11 Nov 2010 17:10:38 -0700
From: Azael Avalos <coproscefalo@...il.com>
To: Matthew Garrett <mjg59@...f.ucam.org>
Cc: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: toshiba_acpi.c: Full TOS1900 device support
Ok, take two, here goes the patch again for review, took me a bit to
figure it out what to do with the raw data from i8042_install_filter, but
here it is:
--- toshiba_acpi.c 2010-10-26 12:54:00.868913701 -0600
+++ toshiba_new/toshiba_acpi.c 2010-11-11 17:09:55.652960623 -0700
@@ -35,7 +35,7 @@
*
*/
-#define TOSHIBA_ACPI_VERSION "0.19"
+#define TOSHIBA_ACPI_VERSION "0.20"
#define PROC_INTERFACE_VERSION 1
#include <linux/kernel.h>
@@ -48,8 +48,12 @@
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
#include <linux/leds.h>
#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/workqueue.h>
+#include <linux/i8042.h>
#include <asm/uaccess.h>
@@ -65,11 +69,18 @@
#define MY_INFO KERN_INFO MY_LOGPREFIX
/* Toshiba ACPI method paths */
-#define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM"
#define TOSH_INTERFACE_1 "\\_SB_.VALD"
#define TOSH_INTERFACE_2 "\\_SB_.VALZ"
#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
#define GHCI_METHOD ".GHCI"
+#define SPFC_METHOD ".SPFC"
+#define EVENTS_METHOD "INFO"
+#define EC_INTERFACE_1 "\\_SB.PCI0.LPC.EC0"
+#define EC_INTERFACE_2 "\\_SB.PCI0.LPC0.EC0"
+#define EC_INTERFACE_3 "\\_SB.PCI0.LPCB.EC0"
+#define NOTIFY_METHOD "NTFY"
+
+#define TOSHIBA_FN_SCAN 0x6e /* Fn key scancode */
/* Toshiba HCI interface definitions
*
@@ -108,6 +119,7 @@
#define HCI_VIDEO_OUT_LCD 0x1
#define HCI_VIDEO_OUT_CRT 0x2
#define HCI_VIDEO_OUT_TV 0x4
+#define HCI_VIDEO_OUT_DVI 0x8
#define HCI_WIRELESS_KILL_SWITCH 0x01
#define HCI_WIRELESS_BT_PRESENT 0x0f
#define HCI_WIRELESS_BT_ATTACH 0x40
@@ -121,36 +133,31 @@
};
MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
-struct key_entry {
- char type;
- u16 code;
- u16 keycode;
-};
-
-enum {KE_KEY, KE_END};
-
static struct key_entry toshiba_acpi_keymap[] = {
- {KE_KEY, 0x101, KEY_MUTE},
- {KE_KEY, 0x102, KEY_ZOOMOUT},
- {KE_KEY, 0x103, KEY_ZOOMIN},
- {KE_KEY, 0x13b, KEY_COFFEE},
- {KE_KEY, 0x13c, KEY_BATTERY},
- {KE_KEY, 0x13d, KEY_SLEEP},
- {KE_KEY, 0x13e, KEY_SUSPEND},
- {KE_KEY, 0x13f, KEY_SWITCHVIDEOMODE},
- {KE_KEY, 0x140, KEY_BRIGHTNESSDOWN},
- {KE_KEY, 0x141, KEY_BRIGHTNESSUP},
- {KE_KEY, 0x142, KEY_WLAN},
- {KE_KEY, 0x143, KEY_PROG1},
- {KE_KEY, 0xb05, KEY_PROG2},
- {KE_KEY, 0xb06, KEY_WWW},
- {KE_KEY, 0xb07, KEY_MAIL},
- {KE_KEY, 0xb30, KEY_STOP},
- {KE_KEY, 0xb31, KEY_PREVIOUSSONG},
- {KE_KEY, 0xb32, KEY_NEXTSONG},
- {KE_KEY, 0xb33, KEY_PLAYPAUSE},
- {KE_KEY, 0xb5a, KEY_MEDIA},
- {KE_END, 0, 0},
+ {KE_KEY, 0x100, { KEY_FN } },
+ {KE_KEY, 0x101, { KEY_MUTE } },
+ {KE_KEY, 0x102, { KEY_ZOOMOUT } },
+ {KE_KEY, 0x103, { KEY_ZOOMIN } },
+ {KE_KEY, 0x139, { KEY_ZOOMRESET } },
+ {KE_KEY, 0x13b, { KEY_COFFEE } },
+ {KE_KEY, 0x13c, { KEY_BATTERY } },
+ {KE_KEY, 0x13d, { KEY_SLEEP } },
+ {KE_KEY, 0x13e, { KEY_SUSPEND } },
+ {KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
+ {KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
+ {KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
+ {KE_KEY, 0x142, { KEY_WLAN } },
+ {KE_KEY, 0x143, { KEY_PROG1 } },
+ {KE_KEY, 0x17f, { KEY_FN } },
+ {KE_KEY, 0xb05, { KEY_PROG2 } },
+ {KE_KEY, 0xb06, { KEY_WWW } },
+ {KE_KEY, 0xb07, { KEY_MAIL } },
+ {KE_KEY, 0xb30, { KEY_STOP } },
+ {KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
+ {KE_KEY, 0xb32, { KEY_NEXTSONG } },
+ {KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
+ {KE_KEY, 0xb5a, { KEY_MEDIA } },
+ {KE_END, 0},
};
/* utility
@@ -163,7 +170,6 @@
/* acpi interface wrappers
*/
-
static int is_valid_acpi_path(const char *methodName)
{
acpi_handle handle;
@@ -173,6 +179,45 @@
return !ACPI_FAILURE(status);
}
+static acpi_status execute_acpi_method(acpi_handle handle, char *method,
+ const int *param, int *result)
+{
+ struct acpi_object_list args_list;
+ struct acpi_buffer buff;
+ union acpi_object in_obj, out_obj;
+ acpi_status status;
+
+ if (param) {
+ args_list.count = 1;
+ args_list.pointer = &in_obj;
+ in_obj.type = ACPI_TYPE_INTEGER;
+ in_obj.integer.value = *param;
+ } else
+ args_list.count = 0;
+
+ buff.length = sizeof(out_obj);
+ buff.pointer = &out_obj;
+
+ status = acpi_evaluate_object(handle, method, &args_list, &buff);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_ERR
+ "ACPI method (%s) execution failed\n", method);
+ return -EINVAL;
+ }
+
+ if (!result)
+ return status;
+
+ if (out_obj.type != ACPI_TYPE_INTEGER) {
+ printk(MY_ERR
+ "ACPI method result is not a number\n");
+ return -EINVAL;
+ }
+
+ *result = out_obj.integer.value;
+ return status;
+}
+
static int write_acpi_int(const char *methodName, int val)
{
struct acpi_object_list params;
@@ -289,8 +334,11 @@
struct platform_device *p_dev;
struct rfkill *bt_rfk;
struct input_dev *hotkey_dev;
+ struct work_struct hotkey_work;
int illumination_installed;
acpi_handle handle;
+ acpi_handle ec_handle;
+ bool spfc;
const char *bt_name;
@@ -366,7 +414,7 @@
acpi_status status;
enum led_brightness result;
- /*Â First request : initialize communication. */
+ /* First request : initialize communication. */
in[0] = 0xf100;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
@@ -508,10 +556,10 @@
u32 value;
hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
- if (hci_result == HCI_SUCCESS) {
+ if (hci_result == HCI_SUCCESS)
return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
- } else
- return -EFAULT;
+
+ return -EFAULT;
}
static int lcd_proc_show(struct seq_file *m, void *v)
@@ -543,7 +591,7 @@
if (hci_result != HCI_SUCCESS)
return -EFAULT;
- return 0;
+ return 0;
}
static int set_lcd_status(struct backlight_device *bd)
@@ -852,89 +900,88 @@
.update_status = set_lcd_status,
};
-static struct key_entry *toshiba_acpi_get_entry_by_scancode(unsigned int code)
+static bool toshiba_i8042_filter(unsigned char data, unsigned char str,
+ struct serio *port)
{
- struct key_entry *key;
+ if (str & 0x20)
+ return false;
- for (key = toshiba_acpi_keymap; key->type != KE_END; key++)
- if (code == key->code)
- return key;
+ if (unlikely(data == 0xe0))
+ return false;
+ else if ((data & 0x7f) == TOSHIBA_FN_SCAN)
+ schedule_work(&toshiba_acpi.hotkey_work);
- return NULL;
+ return false;
}
-static struct key_entry *toshiba_acpi_get_entry_by_keycode(unsigned int code)
+static acpi_status get_spfc_events(int *hotkey)
{
- struct key_entry *key;
-
- for (key = toshiba_acpi_keymap; key->type != KE_END; key++)
- if (code == key->keycode && key->type == KE_KEY)
- return key;
-
- return NULL;
-}
+ acpi_status status;
-static int toshiba_acpi_getkeycode(struct input_dev *dev,
- unsigned int scancode, unsigned int *keycode)
-{
- struct key_entry *key = toshiba_acpi_get_entry_by_scancode(scancode);
+ /* Some models (Satellite X205, A135, NB600, among others) need
+ * to call the NTFY method first in order to get the hotkey events.
+ * But not all (TOS1900) models implement this.
+ */
+ if (toshiba_acpi.ec_handle != NULL) {
+ status = execute_acpi_method(toshiba_acpi.ec_handle,
+ NOTIFY_METHOD, NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_ERR "ACPI method (%s) execution failed\n",
+ NOTIFY_METHOD);
+ return -EIO;
+ }
+ }
- if (key && key->type == KE_KEY) {
- *keycode = key->keycode;
- return 0;
+ /* Now we can poll the INFO method to get last pressed hotkey */
+ status = execute_acpi_method(toshiba_acpi.handle,
+ EVENTS_METHOD, NULL, hotkey);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_ERR "ACPI method (%s) execution failed\n",
+ EVENTS_METHOD);
+ return -EIO;
}
- return -EINVAL;
+ return status;
}
-static int toshiba_acpi_setkeycode(struct input_dev *dev,
- unsigned int scancode, unsigned int keycode)
+static void handle_spfc_hotkeys(struct work_struct *work)
{
- struct key_entry *key;
- unsigned int old_keycode;
+ acpi_status status;
+ int hotkey;
- key = toshiba_acpi_get_entry_by_scancode(scancode);
- if (key && key->type == KE_KEY) {
- old_keycode = key->keycode;
- key->keycode = keycode;
- set_bit(keycode, dev->keybit);
- if (!toshiba_acpi_get_entry_by_keycode(old_keycode))
- clear_bit(old_keycode, dev->keybit);
- return 0;
+ status = get_spfc_events(&hotkey);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_ERR "Failed to get hotkey event\n");
+ return;
}
- return -EINVAL;
+ /* We only care about a key press */
+ if ((hotkey == 0x100) || (hotkey & 0x80))
+ return;
+
+ if (!sparse_keymap_report_event(toshiba_acpi.hotkey_dev,
+ hotkey, 1, true))
+ printk(MY_INFO "Unknown key %x\n", hotkey);
}
static void toshiba_acpi_notify(acpi_handle handle, u32 event, void *context)
{
u32 hci_result, value;
- struct key_entry *key;
if (event != 0x80)
return;
do {
hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
- if (value == 0x100)
- continue;
/* act on key press; ignore key release */
- if (value & 0x80)
+ if ((value == 0x100) || (value & 0x80))
continue;
- key = toshiba_acpi_get_entry_by_scancode
- (value);
- if (!key) {
+ if (!sparse_keymap_report_event(toshiba_acpi.hotkey_dev,
+ value, 1, true)) {
printk(MY_INFO "Unknown key %x\n",
value);
- continue;
}
- input_report_key(toshiba_acpi.hotkey_dev,
- key->keycode, 1);
- input_sync(toshiba_acpi.hotkey_dev);
- input_report_key(toshiba_acpi.hotkey_dev,
- key->keycode, 0);
- input_sync(toshiba_acpi.hotkey_dev);
} else if (hci_result == HCI_NOT_SUPPORTED) {
/* This is a workaround for an unresolved issue on
* some machines where system events sporadically
@@ -943,33 +990,43 @@
printk(MY_NOTICE "Re-enabled hotkeys\n");
}
} while (hci_result != HCI_EMPTY);
+
}
-static int toshiba_acpi_setup_keyboard(char *device)
+static int set_ec_handle(void)
{
acpi_status status;
- acpi_handle handle;
- int result;
- const struct key_entry *key;
+ char *ec_device;
- status = acpi_get_handle(NULL, device, &handle);
- if (ACPI_FAILURE(status)) {
- printk(MY_INFO "Unable to get notification device\n");
+ if (is_valid_acpi_path(EC_INTERFACE_1 "." NOTIFY_METHOD))
+ ec_device = EC_INTERFACE_1;
+ else if (is_valid_acpi_path(EC_INTERFACE_2 "." NOTIFY_METHOD))
+ ec_device = EC_INTERFACE_2;
+ else if (is_valid_acpi_path(EC_INTERFACE_3 "." NOTIFY_METHOD))
+ ec_device = EC_INTERFACE_3;
+ else {
+ printk(MY_NOTICE "No known EC interface found.\n");
return -ENODEV;
}
- toshiba_acpi.handle = handle;
-
- status = acpi_evaluate_object(handle, "ENAB", NULL, NULL);
+ status = acpi_get_handle(NULL, ec_device, &toshiba_acpi.ec_handle);
if (ACPI_FAILURE(status)) {
- printk(MY_INFO "Unable to enable hotkeys\n");
+ printk(MY_INFO "Unable to get EC device handle\n");
return -ENODEV;
}
+ printk(MY_INFO " EC device handle: %s\n", ec_device);
- status = acpi_install_notify_handler(handle, ACPI_DEVICE_NOTIFY,
- toshiba_acpi_notify, NULL);
+ return 0;
+}
+
+static int __init toshiba_acpi_setup_keyboard(char *device)
+{
+ acpi_status status;
+ int error;
+
+ status = acpi_get_handle(NULL, device, &toshiba_acpi.handle);
if (ACPI_FAILURE(status)) {
- printk(MY_INFO "Unable to install hotkey notification\n");
+ printk(MY_INFO "Unable to get notification device\n");
return -ENODEV;
}
@@ -982,27 +1039,96 @@
toshiba_acpi.hotkey_dev->name = "Toshiba input device";
toshiba_acpi.hotkey_dev->phys = device;
toshiba_acpi.hotkey_dev->id.bustype = BUS_HOST;
- toshiba_acpi.hotkey_dev->getkeycode = toshiba_acpi_getkeycode;
- toshiba_acpi.hotkey_dev->setkeycode = toshiba_acpi_setkeycode;
+ toshiba_acpi.hotkey_dev->id.vendor = PCI_VENDOR_ID_TOSHIBA;
- for (key = toshiba_acpi_keymap; key->type != KE_END; key++) {
- set_bit(EV_KEY, toshiba_acpi.hotkey_dev->evbit);
- set_bit(key->keycode, toshiba_acpi.hotkey_dev->keybit);
+ error = sparse_keymap_setup(toshiba_acpi.hotkey_dev,
+ toshiba_acpi_keymap, NULL);
+ if (error)
+ goto err_free_dev;
+
+ if (toshiba_acpi.spfc) {
+ status = acpi_evaluate_object(toshiba_acpi.handle, "ENAB", NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_INFO "Unable to enable hotkeys\n");
+ error = -ENODEV;
+ goto err_free_keymap;
+ }
+
+ error = i8042_install_filter(toshiba_i8042_filter);
+ if (error) {
+ printk(MY_ERR "Unable to install key filter\n");
+ goto err_free_keymap;
+ }
+
+ INIT_WORK(&toshiba_acpi.hotkey_work, handle_spfc_hotkeys);
+ } else {
+ status = acpi_install_notify_handler(toshiba_acpi.handle,
+ ACPI_DEVICE_NOTIFY, toshiba_acpi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_INFO "Unable to install hotkey notification\n");
+ error = -ENODEV;
+ goto err_free_keymap;
+ }
}
- result = input_register_device(toshiba_acpi.hotkey_dev);
- if (result) {
- printk(MY_INFO "Unable to register input device\n");
- return result;
+ error = input_register_device(toshiba_acpi.hotkey_dev);
+ if (error) {
+ printk(MY_ERR "Unable to register input device\n");
+ if (toshiba_acpi.spfc)
+ goto err_remove_filter;
+ else
+ goto err_free_keymap;
}
return 0;
+
+err_remove_filter:
+ i8042_remove_filter(toshiba_i8042_filter);
+err_free_keymap:
+ sparse_keymap_free(toshiba_acpi.hotkey_dev);
+err_free_dev:
+ input_free_device(toshiba_acpi.hotkey_dev);
+ toshiba_acpi.hotkey_dev = NULL;
+ return error;
+}
+
+static int set_device_handle(void)
+{
+ /* simple device detection: look for HCI method */
+ if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) {
+ method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
+ toshiba_acpi.spfc = false;
+ if (!toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1))
+ return 0;
+ } else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) {
+ method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
+ toshiba_acpi.spfc = false;
+ if (!toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
+ return 0;
+ } else if (is_valid_acpi_path(TOSH_INTERFACE_2 SPFC_METHOD)) {
+ method_hci = TOSH_INTERFACE_2 SPFC_METHOD;
+ toshiba_acpi.spfc = true;
+ if (!toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
+ return 0;
+ } else
+ printk(MY_INFO "No supported Toshiba interface found\n");
+
+ return -ENODEV;
}
static void toshiba_acpi_exit(void)
{
- if (toshiba_acpi.hotkey_dev)
+ if (toshiba_acpi.hotkey_dev) {
+ if (toshiba_acpi.spfc) {
+ flush_scheduled_work();
+ i8042_remove_filter(toshiba_i8042_filter);
+ } else {
+ acpi_remove_notify_handler(toshiba_acpi.handle,
+ ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
+ }
+ sparse_keymap_free(toshiba_acpi.hotkey_dev);
input_unregister_device(toshiba_acpi.hotkey_dev);
+ }
if (toshiba_acpi.bt_rfk) {
rfkill_unregister(toshiba_acpi.bt_rfk);
@@ -1017,13 +1143,11 @@
if (toshiba_proc_dir)
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
- acpi_remove_notify_handler(toshiba_acpi.handle, ACPI_DEVICE_NOTIFY,
- toshiba_acpi_notify);
-
if (toshiba_acpi.illumination_installed)
led_classdev_unregister(&toshiba_led);
- platform_device_unregister(toshiba_acpi.p_dev);
+ if (toshiba_acpi.p_dev)
+ platform_device_unregister(toshiba_acpi.p_dev);
return;
}
@@ -1038,16 +1162,7 @@
if (acpi_disabled)
return -ENODEV;
- /* simple device detection: look for HCI method */
- if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) {
- method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
- if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1))
- printk(MY_INFO "Unable to activate hotkeys\n");
- } else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) {
- method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
- if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
- printk(MY_INFO "Unable to activate hotkeys\n");
- } else
+ if (set_device_handle())
return -ENODEV;
printk(MY_INFO "Toshiba Laptop ACPI Extras version %s\n",
@@ -1072,6 +1187,21 @@
/* enable event fifo */
hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+ /* TOS1900 models hotkey activation */
+ if (toshiba_acpi.spfc) {
+ /* Some TOS1900 models don't implement the ENAB method,
+ * and hotkeys activation goes by calling HCI_HOTKEY_EVENT
+ */
+ hci_write1(HCI_HOTKEY_EVENT, 1, &hci_result);
+ /* The EC handle must be set for models without
+ * the ENAB method so they can access the NOTIFY method,
+ * and thus, access the INFO method...
+ */
+ if (set_ec_handle())
+ toshiba_acpi.ec_handle = NULL;
+ } else
+ toshiba_acpi.ec_handle = NULL;
+
toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
if (!toshiba_proc_dir) {
toshiba_acpi_exit();
@@ -1080,19 +1210,24 @@
create_toshiba_proc_entries();
}
- props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
- toshiba_backlight_device = backlight_device_register("toshiba",
- &toshiba_acpi.p_dev->dev,
- NULL,
- &toshiba_backlight_data,
- &props);
- if (IS_ERR(toshiba_backlight_device)) {
- ret = PTR_ERR(toshiba_backlight_device);
-
- printk(KERN_ERR "Could not register toshiba backlight device\n");
- toshiba_backlight_device = NULL;
- toshiba_acpi_exit();
- return ret;
+ /* Only register backlight if the ACPI backlight is not
+ * available or if a TOS1900 device is not detected
+ */
+ if (!toshiba_acpi.spfc || !acpi_video_backlight_support()) {
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
+ toshiba_backlight_device = backlight_device_register("toshiba",
+ &toshiba_acpi.p_dev->dev,
+ NULL,
+ &toshiba_backlight_data,
+ &props);
+ if (IS_ERR(toshiba_backlight_device)) {
+ printk(KERN_ERR
+ "Could not register toshiba backlight device\n");
+ toshiba_backlight_device = NULL;
+ toshiba_acpi_exit();
+ return PTR_ERR(toshiba_backlight_device);
+ }
}
/* Register rfkill switch for Bluetooth */
--
-- El mundo apesta y vosotros apestais tambien --
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