On Fri, Jun 03, 2011 at 05:38:08PM +0200, Marco Chiappero wrote:
> sony_nc_notify rewritten (and placed near the other acpi callbacks),
> the hotkey decoding code move to a new function
> sony_nc_hotkeys_decode. Now generating acpi netlink events too.
one thing I'm wondering is if we shouldn't stop sending input
events also via the acpi bus rather than adding new notification
methods. The /proc/acpi/event notification will go away on its own one
day so maybe letting this habit die with it is a reasonable deprecation
plan for /proc/acpi/event users.
Dmitry, Matthew,
any thought about this?
> Signed-off-by: Marco Chiappero <marco@xxxxxxxxxx>
> ---
>
> --- a/drivers/platform/x86/sony-laptop.c
> +++ b/drivers/platform/x86/sony-laptop.c
> @@ -1151,62 +1151,6 @@ static struct sony_nc_event sony_127_eve
> /*
> * ACPI callbacks
> */
> -static void sony_nc_notify(struct acpi_device *device, u32 event)
> -{
> - u32 ev = event;
> -
> - if (ev >= 0x90) {
> - /* New-style event */
> - unsigned int result;
> - int key_handle = 0;
> - ev -= 0x90;
> -
> - if (sony_find_snc_handle(0x100) == ev)
> - key_handle = 0x100;
> - if (sony_find_snc_handle(0x127) == ev)
> - key_handle = 0x127;
> -
> - if (key_handle) {
> - struct sony_nc_event *key_event;
> -
> - if (sony_call_snc_handle(key_handle, 0x200, &result)) {
> - dprintk("sony_nc_notify, unable to decode"
> - " event 0x%.2x 0x%.2x\n", key_handle,
> - ev);
> - /* restore the original event */
> - ev = event;
> - } else {
> - ev = result & 0xFF;
> -
> - if (key_handle == 0x100)
> - key_event = sony_100_events;
> - else
> - key_event = sony_127_events;
> -
> - for (; key_event->data; key_event++) {
> - if (key_event->data == ev) {
> - ev = key_event->event;
> - break;
> - }
> - }
> -
> - if (!key_event->data)
> - pr_info("Unknown event: 0x%x 0x%x\n",
> - key_handle, ev);
> - else
> - sony_laptop_report_input_event(ev);
> - }
> - } else if (sony_find_snc_handle(sony_rfkill_handle) == ev) {
> - sony_nc_rfkill_update();
> - return;
> - }
> - } else
> - sony_laptop_report_input_event(ev);
> -
> - dprintk("sony_nc_notify, event: 0x%.2x\n", ev);
> - acpi_bus_generate_proc_event(sony_nc_acpi_device, 1, ev);
> -}
> -
> static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
> void *context, void **return_value)
> {
> @@ -1237,6 +1181,42 @@ static int sony_nc_function_setup(unsign
> return 0;
> }
>
> +static int sony_nc_hotkeys_decode(unsigned int handle)
> +{
> + int ret = 0;
> + unsigned int result = 0;
> + struct sony_nc_event *key_event;
> +
> + if (sony_call_snc_handle(handle, 0x200, &result)) {
> + dprintk("sony_nc_hotkeys_decode,"
> + " unable to retrieve the hotkey\n");
> + ret = -1;
when sony_call_snc_handle(handle, 0x200, &result) fails above you will
be reporting -1 via the acpi bus. The old code restored the event and
reported the raw number instead.
> + } else {
> + result &= 0xff;
> +
> + if (handle == 0x100)
> + key_event = sony_100_events;
> + else
> + key_event = sony_127_events;
> +
> + for (; key_event->data; key_event++) {
> + if (key_event->data == result) {
> + ret = key_event->event;
> + break;
> + }
> + }
> +
> + if (!key_event->data)
> + pr_info("Unknown hotkey 0x%.2x (handle 0x%.2x)\n",
> + result, handle);
For not yet mapped keys instead you'll always report 0;
The current behaviour is different, please don't change it without a
good reason.
> + else
> + dprintk("sony_nc_hotkeys_decode, hotkey 0x%.2x decoded "
> + "to event 0x%.2x\n", result, ret);
> + }
> +
> + return ret;
> +}
> +
> static void sony_nc_rfkill_cleanup(void)
> {
> int i;
> @@ -1864,6 +1844,52 @@ static int sony_nc_snc_resume(void)
> return 0;
> }
>
> +static void sony_nc_notify(struct acpi_device *device, u32 event)
> +{
> + u8 ev = 0;
> + int value = 0;
> +
> + dprintk("sony_nc_notify, event: 0x%.2x\n", event);
> +
> + /* handles related events */
> + if (event >= 0x90) {
> + unsigned int result = 0, handle = 0;
> +
> + /* the event should corrispond to the offset of the method */
> + unsigned int offset = event - 0x90;
> +
> + handle = handles->cap[offset];
> + switch (handle) {
> + /* list of handles known for generating events */
> + case 0x0100:
> + case 0x0127:
> + /* hotkey event, a key has been pressed, retrieve it */
> + value = sony_nc_hotkeys_decode(handle);
> + if (value > 0) /* known event */
> + sony_laptop_report_input_event(value);
> + /* else unknown event or failure, do nothing */
> + ev = 1;
> + break;
> +
> + default:
> + value = event;
> + dprintk("Unknowk event for handle: 0x%x\n", handle);
> + break;
> + }
> +
> + /* clear the event (and the event reason when present) */
> + acpi_callsetfunc(sony_nc_acpi_handle, "SN05", 1 << offset,
> + &result);
> + } else {
> + ev = 1;
> + sony_laptop_report_input_event(event);
> + }
> +
> + acpi_bus_generate_proc_event(device, ev, value);
> + acpi_bus_generate_netlink_event(device->pnp.device_class,
> + dev_name(&device->dev), ev, value);
see above about this.
> +}
> +
> static int sony_nc_add(struct acpi_device *device)
> {
> acpi_status status;
--
mattia
:wq!
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