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Date: Mon, 20 Jul 2009 21:08:41 +0100
From: Alan Jenkins <alan-jenkins@...fmail.co.uk>
To: Maciej Rutecki <maciej.rutecki@...il.com>
CC: Matthew Garrett <mjg@...hat.com>, Frans Pop <elendil@...net.nl>,
Larry Finger <Larry.Finger@...inger.net>,
linux acpi <linux-acpi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RFT] hp-wmi: improved rfkill support for wifi
Maciej Rutecki wrote:
> 2009/7/20 Alan Jenkins <alan-jenkins@...fmail.co.uk>:
>
>> ...and here's the version that remembers to register the bluetooth. I
>> reviewed the patch again; hopefully that's the last dumb error.
>>
> [...]
>
> 2.6.31-rc3+ patches:
> http://lkml.org/lkml/2009/7/18/131
> http://lkml.org/lkml/2009/7/10/339
> + patch below:
>
>
>> diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
>> index 517ac47..adb26d3 100644
>> --- a/drivers/platform/x86/hp-wmi.c
>> +++ b/drivers/platform/x86/hp-wmi.c
>> @@ -51,6 +51,12 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
>> #define HPWMI_WIRELESS_QUERY 0x5
>> #define HPWMI_HOTKEY_QUERY 0xc
>>
>> +enum hp_wmi_radio {
>> + HPWMI_WIFI = 0,
>> + HPWMI_BLUETOOTH = 1,
>> + HPWMI_WWAN = 2,
>> +};
>> +
>> static int __init hp_wmi_bios_setup(struct platform_device *device);
>> static int __exit hp_wmi_bios_remove(struct platform_device *device);
>> static int hp_wmi_resume_handler(struct platform_device *device);
>> @@ -170,8 +176,8 @@ static int hp_wmi_tablet_state(void)
>>
>> static int hp_wmi_set_block(void *data, bool blocked)
>> {
>> - unsigned long b = (unsigned long) data;
>> - int query = BIT(b + 8) | ((!blocked) << b);
>> + enum hp_wmi_radio r = (enum hp_wmi_radio) data;
>> + int query = BIT(r + 8) | ((!blocked) << r);
>>
>> return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query);
>> }
>> @@ -180,41 +186,23 @@ static const struct rfkill_ops hp_wmi_rfkill_ops = {
>> .set_block = hp_wmi_set_block,
>> };
>>
>> -static bool hp_wmi_wifi_sw_state(void)
>> +static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
>> {
>> int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
>> + int mask = 0x200 << (r * 8);
>>
>> - if (wireless & 0x200)
>> + if (wireless & mask)
>> return false;
>> else
>> return true;
>> }
>>
>> -static bool hp_wmi_wifi_hw_state(void)
>> +static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
>> {
>> int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
>> + int mask = 0x800 << (r * 8);
>>
>> - if (wireless & 0x800)
>> - return false;
>> - else
>> - return true;
>> -}
>> -
>> -static bool hp_wmi_bluetooth_state(void)
>> -{
>> - int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
>> -
>> - if (wireless & 0x10000)
>> - return false;
>> - else
>> - return true;
>> -}
>> -
>> -static bool hp_wmi_wwan_state(void)
>> -{
>> - int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
>> -
>> - if (wireless & 0x1000000)
>> + if (wireless & mask)
>> return false;
>> else
>> return true;
>> @@ -339,50 +327,55 @@ static void hp_wmi_notify(u32 value, void *context)
>> struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
>> static struct key_entry *key;
>> union acpi_object *obj;
>> + int eventcode;
>>
>> wmi_get_event_data(value, &response);
>>
>> obj = (union acpi_object *)response.pointer;
>>
>> - if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) {
>> - int eventcode = *((u8 *) obj->buffer.pointer);
>> - if (eventcode == 0x4)
>> - eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
>> - 0);
>> - key = hp_wmi_get_entry_by_scancode(eventcode);
>> - if (key) {
>> - switch (key->type) {
>> - case KE_KEY:
>> - input_report_key(hp_wmi_input_dev,
>> - key->keycode, 1);
>> - input_sync(hp_wmi_input_dev);
>> - input_report_key(hp_wmi_input_dev,
>> - key->keycode, 0);
>> - input_sync(hp_wmi_input_dev);
>> - break;
>> - }
>> - } else if (eventcode == 0x1) {
>> - input_report_switch(hp_wmi_input_dev, SW_DOCK,
>> - hp_wmi_dock_state());
>> - input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
>> - hp_wmi_tablet_state());
>> + if (!obj || obj->type != ACPI_TYPE_BUFFER || obj->buffer.length != 8) {
>> + printk(KERN_INFO "HP WMI: Unknown response received\n");
>> + return;
>> + }
>> +
>> + eventcode = *((u8 *) obj->buffer.pointer);
>> + if (eventcode == 0x4)
>> + eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
>> + 0);
>> + key = hp_wmi_get_entry_by_scancode(eventcode);
>> + if (key) {
>> + switch (key->type) {
>> + case KE_KEY:
>> + input_report_key(hp_wmi_input_dev,
>> + key->keycode, 1);
>> + input_sync(hp_wmi_input_dev);
>> + input_report_key(hp_wmi_input_dev,
>> + key->keycode, 0);
>> input_sync(hp_wmi_input_dev);
>> - } else if (eventcode == 0x5) {
>> - if (wifi_rfkill)
>> - rfkill_set_states(wifi_rfkill,
>> - hp_wmi_wifi_sw_state(),
>> - hp_wmi_wifi_hw_state());
>> - if (bluetooth_rfkill)
>> - rfkill_set_sw_state(bluetooth_rfkill,
>> - hp_wmi_bluetooth_state());
>> - if (wwan_rfkill)
>> - rfkill_set_sw_state(wwan_rfkill,
>> - hp_wmi_wwan_state());
>> - } else
>> - printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
>> - eventcode);
>> + break;
>> + }
>> + } else if (eventcode == 0x1) {
>> + input_report_switch(hp_wmi_input_dev, SW_DOCK,
>> + hp_wmi_dock_state());
>> + input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
>> + hp_wmi_tablet_state());
>> + input_sync(hp_wmi_input_dev);
>> + } else if (eventcode == 0x5) {
>> + if (wifi_rfkill)
>> + rfkill_set_states(wifi_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_WIFI),
>> + hp_wmi_get_hw_state(HPWMI_WIFI));
>> + if (bluetooth_rfkill)
>> + rfkill_set_states(bluetooth_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
>> + hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
>> + if (wwan_rfkill)
>> + rfkill_set_states(wwan_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_WWAN),
>> + hp_wmi_get_hw_state(HPWMI_WWAN));
>> } else
>> - printk(KERN_INFO "HP WMI: Unknown response received\n");
>> + printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
>> + eventcode);
>> }
>>
>> static int __init hp_wmi_input_setup(void)
>> @@ -461,11 +454,11 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
>> wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
>> RFKILL_TYPE_WLAN,
>> &hp_wmi_rfkill_ops,
>> - (void *) 0);
>> + (void *) HPWMI_WIFI);
>> rfkill_init_sw_state(wifi_rfkill,
>> - hp_wmi_wifi_sw_state());
>> + hp_wmi_get_sw_state(HPWMI_WIFI));
>> rfkill_set_hw_state(wifi_rfkill,
>> - hp_wmi_wifi_hw_state());
>> + hp_wmi_get_hw_state(HPWMI_WIFI));
>> err = rfkill_register(wifi_rfkill);
>> if (err)
>> goto register_wifi_error;
>> @@ -475,7 +468,11 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
>> bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
>> RFKILL_TYPE_BLUETOOTH,
>> &hp_wmi_rfkill_ops,
>> - (void *) 1);
>> + (void *) HPWMI_BLUETOOTH);
>> + rfkill_init_sw_state(bluetooth_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
>> + rfkill_set_hw_state(bluetooth_rfkill,
>> + hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
>> err = rfkill_register(bluetooth_rfkill);
>> if (err)
>> goto register_bluetooth_error;
>> @@ -485,7 +482,11 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
>> wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
>> RFKILL_TYPE_WWAN,
>> &hp_wmi_rfkill_ops,
>> - (void *) 2);
>> + (void *) HPWMI_WWAN);
>> + rfkill_init_sw_state(wwan_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_WWAN));
>> + rfkill_set_hw_state(wwan_rfkill,
>> + hp_wmi_get_hw_state(HPWMI_WWAN));
>> err = rfkill_register(wwan_rfkill);
>> if (err)
>> goto register_wwan_err;
>> @@ -541,9 +542,18 @@ static int hp_wmi_resume_handler(struct platform_device *device)
>> hp_wmi_tablet_state());
>> input_sync(hp_wmi_input_dev);
>>
>> - rfkill_set_states(wifi_rfkill,
>> - hp_wmi_wifi_sw_state(),
>> - hp_wmi_wifi_hw_state());
>> + if (wifi_rfkill)
>> + rfkill_set_states(wifi_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_WIFI),
>> + hp_wmi_get_hw_state(HPWMI_WIFI));
>> + if (bluetooth_rfkill)
>> + rfkill_set_states(bluetooth_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
>> + hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
>> + if (wwan_rfkill)
>> + rfkill_set_states(wwan_rfkill,
>> + hp_wmi_get_sw_state(HPWMI_WWAN),
>> + hp_wmi_get_hw_state(HPWMI_WWAN));
>>
>> return 0;
>> }
>>
>>
>>
>>
>
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill list
> 0: phy0: Wireless LAN
> Soft blocked: yes
> Hard blocked: yes
> 1: hp-wifi: Wireless LAN
> Soft blocked: yes
> Hard blocked: no
> 2: hp-bluetooth: Bluetooth
> Soft blocked: yes
> Hard blocked: no
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill unblock 0
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill list
> 0: phy0: Wireless LAN
> Soft blocked: no
> Hard blocked: yes
> 1: hp-wifi: Wireless LAN
> Soft blocked: yes
> Hard blocked: no
> 2: hp-bluetooth: Bluetooth
> Soft blocked: yes
> Hard blocked: no
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill unblock 1
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill list
> 0: phy0: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> 1: hp-wifi: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> 2: hp-bluetooth: Bluetooth
> Soft blocked: yes
> Hard blocked: no
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill unblock 2
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill list
> 0: phy0: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> 1: hp-wifi: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> 2: hp-bluetooth: Bluetooth
> Soft blocked: no
> Hard blocked: no
> 3: hci0: Bluetooth
> Soft blocked: yes
> Hard blocked: no
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill unblock 3
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# ./rfkill list
> 0: phy0: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> 1: hp-wifi: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> 2: hp-bluetooth: Bluetooth
> Soft blocked: no
> Hard blocked: no
> 3: hci0: Bluetooth
> Soft blocked: no
> Hard blocked: no
> root@...is:/home/maciek/zrodelka/rfkill/rfkill# hciconfig
> hci0: Type: USB
> BD Address: 00:16:41:88:A0:1B ACL MTU: 1017:8 SCO MTU: 64:8
> DOWN
> RX bytes:318 acl:0 sco:0 events:6 errors:0
> TX bytes:27 acl:0 sco:0 commands:9 errors:0
>
> Works OK. Thanks :-)
>
> During compile I have got:
> CC [M] drivers/platform/x86/hp-wmi.o
> drivers/platform/x86/hp-wmi.c: In function ‘hp_wmi_bios_setup’:
> drivers/platform/x86/hp-wmi.c:460: warning: ignoring return value of
> ‘rfkill_set_hw_state’, declared with attribute warn_unused_result
> drivers/platform/x86/hp-wmi.c:474: warning: ignoring return value of
> ‘rfkill_set_hw_state’, declared with attribute warn_unused_result
> drivers/platform/x86/hp-wmi.c:488: warning: ignoring return value of
> ‘rfkill_set_hw_state’, declared with attribute warn_unused_result
>
The attribute is wrong, I've already submitted a patch to remove it.
I'll combine this patch with the previous one and submit it tomorrow.
Thanks again
Alan
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