diff options
| -rw-r--r-- | drivers/platform/x86/dell-wmi.c | 215 |
1 files changed, 104 insertions, 111 deletions
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c index 41ae79d507b3..b8ad055078cf 100644 --- a/drivers/platform/x86/dell-wmi.c +++ b/drivers/platform/x86/dell-wmi.c @@ -80,12 +80,13 @@ static const struct dmi_system_id dell_wmi_smbios_list[] __initconst = { }; /* + * Keymap for WMI events of type 0x0000 + * * Certain keys are flagged as KE_IGNORE. All of these are either * notifications (rather than requests for change) or are also sent * via the keyboard controller so should not be sent again. */ - -static const struct key_entry dell_wmi_legacy_keymap[] __initconst = { +static const struct key_entry dell_wmi_keymap_type_0000[] __initconst = { { KE_IGNORE, 0x003a, { KEY_CAPSLOCK } }, /* Key code is followed by brightness level */ @@ -183,12 +184,8 @@ static const struct key_entry dell_wmi_legacy_keymap[] __initconst = { { KE_IGNORE, 0xe0f7, { KEY_MUTE } }, { KE_IGNORE, 0xe0f8, { KEY_VOLUMEDOWN } }, { KE_IGNORE, 0xe0f9, { KEY_VOLUMEUP } }, - - { KE_END, 0 } }; -static bool dell_new_hk_type; - struct dell_bios_keymap_entry { u16 scancode; u16 keycode; @@ -202,6 +199,7 @@ struct dell_bios_hotkey_table { struct dell_dmi_results { int err; + int keymap_size; struct key_entry *keymap; }; @@ -250,10 +248,12 @@ static const u16 bios_to_linux_keycode[256] __initconst = { }; /* + * Keymap for WMI events of type 0x0010 + * * These are applied if the 0xB2 DMI hotkey table is present and doesn't * override them. */ -static const struct key_entry dell_wmi_extra_keymap[] __initconst = { +static const struct key_entry dell_wmi_keymap_type_0010[] __initconst = { /* Fn-lock */ { KE_IGNORE, 0x151, { KEY_RESERVED } }, @@ -273,21 +273,39 @@ static const struct key_entry dell_wmi_extra_keymap[] __initconst = { { KE_IGNORE, 0x155, { KEY_RESERVED } }, }; +/* + * Keymap for WMI events of type 0x0011 + */ +static const struct key_entry dell_wmi_keymap_type_0011[] __initconst = { + /* Battery unplugged */ + { KE_IGNORE, 0xfff0, { KEY_RESERVED } }, + + /* Battery inserted */ + { KE_IGNORE, 0xfff1, { KEY_RESERVED } }, + + /* Keyboard backlight level changed */ + { KE_IGNORE, 0x01e1, { KEY_RESERVED } }, + { KE_IGNORE, 0x02ea, { KEY_RESERVED } }, + { KE_IGNORE, 0x02eb, { KEY_RESERVED } }, + { KE_IGNORE, 0x02ec, { KEY_RESERVED } }, + { KE_IGNORE, 0x02f6, { KEY_RESERVED } }, +}; + static struct input_dev *dell_wmi_input_dev; -static void dell_wmi_process_key(int reported_key) +static void dell_wmi_process_key(int type, int code) { const struct key_entry *key; key = sparse_keymap_entry_from_scancode(dell_wmi_input_dev, - reported_key); + (type << 16) | code); if (!key) { - pr_info("Unknown key with scancode 0x%x pressed\n", - reported_key); + pr_info("Unknown key with type 0x%04x and code 0x%04x pressed\n", + type, code); return; } - pr_debug("Key %x pressed\n", reported_key); + pr_debug("Key with type 0x%04x and code 0x%04x pressed\n", type, code); /* Don't report brightness notifications that will also come via ACPI */ if ((key->keycode == KEY_BRIGHTNESSUP || @@ -295,7 +313,7 @@ static void dell_wmi_process_key(int reported_key) acpi_video_handles_brightness_key_presses()) return; - if (reported_key == 0xe025 && !wmi_requires_smbios_request) + if (type == 0x0000 && code == 0xe025 && !wmi_requires_smbios_request) return; sparse_keymap_report_entry(dell_wmi_input_dev, key, 1, true); @@ -333,18 +351,6 @@ static void dell_wmi_notify(u32 value, void *context) buffer_entry = (u16 *)obj->buffer.pointer; buffer_size = obj->buffer.length/2; - - if (!dell_new_hk_type) { - if (buffer_size >= 3 && buffer_entry[1] == 0x0) - dell_wmi_process_key(buffer_entry[2]); - else if (buffer_size >= 2) - dell_wmi_process_key(buffer_entry[1]); - else - pr_info("Received unknown WMI event\n"); - kfree(obj); - return; - } - buffer_end = buffer_entry + buffer_size; /* @@ -379,62 +385,18 @@ static void dell_wmi_notify(u32 value, void *context) pr_debug("Process buffer (%*ph)\n", len*2, buffer_entry); switch (buffer_entry[1]) { - case 0x00: - for (i = 2; i < len; ++i) { - switch (buffer_entry[i]) { - case 0xe043: - /* NIC Link is Up */ - pr_debug("NIC Link is Up\n"); - break; - case 0xe044: - /* NIC Link is Down */ - pr_debug("NIC Link is Down\n"); - break; - case 0xe045: - /* Unknown event but defined in DSDT */ - default: - /* Unknown event */ - pr_info("Unknown WMI event type 0x00: " - "0x%x\n", (int)buffer_entry[i]); - break; - } - } + case 0x0000: /* One key pressed or event occurred */ + if (len > 2) + dell_wmi_process_key(0x0000, buffer_entry[2]); + /* Other entries could contain additional information */ break; - case 0x10: - /* Keys pressed */ + case 0x0010: /* Sequence of keys pressed */ + case 0x0011: /* Sequence of events occurred */ for (i = 2; i < len; ++i) - dell_wmi_process_key(buffer_entry[i]); - break; - case 0x11: - for (i = 2; i < len; ++i) { - switch (buffer_entry[i]) { - case 0xfff0: - /* Battery unplugged */ - pr_debug("Battery unplugged\n"); - break; - case 0xfff1: - /* Battery inserted */ - pr_debug("Battery inserted\n"); - break; - case 0x01e1: - case 0x02ea: - case 0x02eb: - case 0x02ec: - case 0x02f6: - /* Keyboard backlight level changed */ - pr_debug("Keyboard backlight level " - "changed\n"); - break; - default: - /* Unknown event */ - pr_info("Unknown WMI event type 0x11: " - "0x%x\n", (int)buffer_entry[i]); - break; - } - } + dell_wmi_process_key(buffer_entry[1], + buffer_entry[i]); break; - default: - /* Unknown event */ + default: /* Unknown event */ pr_info("Unknown WMI event type 0x%x\n", (int)buffer_entry[1]); break; @@ -459,7 +421,6 @@ static bool have_scancode(u32 scancode, const struct key_entry *keymap, int len) } static void __init handle_dmi_entry(const struct dmi_header *dm, - void *opaque) { @@ -467,7 +428,6 @@ static void __init handle_dmi_entry(const struct dmi_header *dm, struct dell_bios_hotkey_table *table; int hotkey_num, i, pos = 0; struct key_entry *keymap; - int num_bios_keys; if (results->err || results->keymap) return; /* We already found the hotkey table. */ @@ -491,8 +451,7 @@ static void __init handle_dmi_entry(const struct dmi_header *dm, return; } - keymap = kcalloc(hotkey_num + ARRAY_SIZE(dell_wmi_extra_keymap) + 1, - sizeof(struct key_entry), GFP_KERNEL); + keymap = kcalloc(hotkey_num, sizeof(struct key_entry), GFP_KERNEL); if (!keymap) { results->err = -ENOMEM; return; @@ -529,31 +488,15 @@ static void __init handle_dmi_entry(const struct dmi_header *dm, pos++; } - num_bios_keys = pos; - - for (i = 0; i < ARRAY_SIZE(dell_wmi_extra_keymap); i++) { - const struct key_entry *entry = &dell_wmi_extra_keymap[i]; - - /* - * Check if we've already found this scancode. This takes - * quadratic time, but it doesn't matter unless the list - * of extra keys gets very long. - */ - if (!have_scancode(entry->code, keymap, num_bios_keys)) { - keymap[pos] = *entry; - pos++; - } - } - - keymap[pos].type = KE_END; - results->keymap = keymap; + results->keymap_size = pos; } static int __init dell_wmi_input_setup(void) { struct dell_dmi_results dmi_results = {}; - int err; + struct key_entry *keymap; + int err, i, pos = 0; dell_wmi_input_dev = input_allocate_device(); if (!dell_wmi_input_dev) @@ -577,21 +520,71 @@ static int __init dell_wmi_input_setup(void) goto err_free_dev; } - if (dmi_results.keymap) { - dell_new_hk_type = true; + keymap = kcalloc(dmi_results.keymap_size + + ARRAY_SIZE(dell_wmi_keymap_type_0000) + + ARRAY_SIZE(dell_wmi_keymap_type_0010) + + ARRAY_SIZE(dell_wmi_keymap_type_0011) + + 1, + sizeof(struct key_entry), GFP_KERNEL); + if (!keymap) { + kfree(dmi_results.keymap); + err = -ENOMEM; + goto err_free_dev; + } - err = sparse_keymap_setup(dell_wmi_input_dev, - dmi_results.keymap, NULL); + /* Append table with events of type 0x0010 which comes from DMI */ + for (i = 0; i < dmi_results.keymap_size; i++) { + keymap[pos] = dmi_results.keymap[i]; + keymap[pos].code |= (0x0010 << 16); + pos++; + } + + kfree(dmi_results.keymap); + + /* Append table with extra events of type 0x0010 which are not in DMI */ + for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0010); i++) { + const struct key_entry *entry = &dell_wmi_keymap_type_0010[i]; /* - * Sparse keymap library makes a copy of keymap so we - * don't need the original one that was allocated. + * Check if we've already found this scancode. This takes + * quadratic time, but it doesn't matter unless the list + * of extra keys gets very long. */ - kfree(dmi_results.keymap); - } else { - err = sparse_keymap_setup(dell_wmi_input_dev, - dell_wmi_legacy_keymap, NULL); + if (dmi_results.keymap_size && + have_scancode(entry->code | (0x0010 << 16), + keymap, dmi_results.keymap_size) + ) + continue; + + keymap[pos] = *entry; + keymap[pos].code |= (0x0010 << 16); + pos++; + } + + /* Append table with events of type 0x0011 */ + for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0011); i++) { + keymap[pos] = dell_wmi_keymap_type_0011[i]; + keymap[pos].code |= (0x0011 << 16); + pos++; } + + /* + * Now append also table with "legacy" events of type 0x0000. Some of + * them are reported also on laptops which have scancodes in DMI. + */ + for (i = 0; i < ARRAY_SIZE(dell_wmi_keymap_type_0000); i++) { + keymap[pos] = dell_wmi_keymap_type_0000[i]; + pos++; + } + + keymap[pos].type = KE_END; + + err = sparse_keymap_setup(dell_wmi_input_dev, keymap, NULL); + /* + * Sparse keymap library makes a copy of keymap so we don't need the + * original one that was allocated. + */ + kfree(keymap); if (err) goto err_free_dev; |