as well, can someone confirm this patch made it to the ibm-acpi-devel
list? When I originally sent this I realized I wasn't subscribed to the
list, so I'm guessing I might need to resend.
On Tue, 2016-10-25 at 18:12 -0400, Lyude wrote:
> For whatever reason, the X1 Yoga doesn't support the normal method of
> querying for tablet mode. Instead of providing the MHKG method under
> the
> hotkey handle, we're instead given the CMMD method under the EC
> handle.
> Values on this handle are either 0x1, laptop mode, or 0x6, tablet
> mode.
>
> Signed-off-by: Lyude <lyude@xxxxxxxxxx>
> ---
> So HOPEFULLY I actually did this right. There was some discussion
> here
> previously about supporting this, and it was previously mentioned
> that the IOST
> method was responsible for holding the current tablet status.
> However, it
> really doesn't seem like this is the case:
>
> Method (_Q2E, 0, NotSerialized) // _Qxx: EC Query
> {
> Local0 = \_SB.PCI0.LPC.EC.CMMD
> If ((Local0 != 0x00) && (Local0 <= 0x06))
> {
> If (Local0 != \PMMD)
> {
> \PMMD = Local0
> \_SB.PCI0.LPC.EC.HKEY.MHKQ (0x60C0)
> }
> }
>
> If ((Local0 == 0x00) || (Local0 >= 0x07))
> {
> Local1 = 0x01
> }
> ElseIf ((Local0 == 0x02) || (Local0 == 0x03))
> {
> Local1 = 0x02
> }
> Else
> {
> Local1 = 0x03
> }
>
> If (Local1 != \LVMD)
> {
> \LVMD = Local1
> Sleep (0x0A)
> \_SB.PCI0.LPC.EC.HKEY.MHKQ (0x60F0)
> }
> }
>
> IOST seems to be present in the decompiled DSDT from my Yoga, however
> it's
> quite far from the spot that actually sends the 0x60C0 hotkey event.
> Let me
> know if you guys want to verify this against the full decompiled DSDT
> for this
> machine.
>
> drivers/platform/x86/thinkpad_acpi.c | 36
> +++++++++++++++++++++++++++++++++---
> 1 file changed, 33 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/x86/thinkpad_acpi.c
> b/drivers/platform/x86/thinkpad_acpi.c
> index b65ce75..8082dc9 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -190,6 +190,9 @@ enum tpacpi_hkey_event_t {
> TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid
> opened */
> TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel
> up */
> TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel
> down */
> + TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga
> (2016):
> + * enter/leave
> tablet mode
> + */
> TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet
> pen inserted */
> TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet
> pen removed */
> TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight
> control event */
> @@ -303,6 +306,7 @@ static struct {
> u32 hotkey_mask:1;
> u32 hotkey_wlsw:1;
> u32 hotkey_tablet:1;
> + u32 hotkey_tablet_cmmd:1;
> u32 kbdlight:1;
> u32 light:1;
> u32 light_status:1;
> @@ -2059,6 +2063,8 @@ static void hotkey_poll_setup(const bool
> may_warn);
>
> /* HKEY.MHKG() return bits */
> #define TP_HOTKEY_TABLET_MASK (1 << 3)
> +/* ThinkPad X1 Yoga (2016) */
> +#define TP_EC_CMMD_TABLET_MODE 0x6
>
> static int hotkey_get_wlsw(void)
> {
> @@ -2083,10 +2089,18 @@ static int hotkey_get_tablet_mode(int
> *status)
> {
> int s;
>
> - if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
> - return -EIO;
> + if (tp_features.hotkey_tablet_cmmd) {
> + if (!acpi_evalf(ec_handle, &s, "CMMD", "d"))
> + return -EIO;
> +
> + *status = (s == TP_EC_CMMD_TABLET_MODE);
> + } else {
> + if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
> + return -EIO;
> +
> + *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
> + }
>
> - *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
> return 0;
> }
>
> @@ -3475,6 +3489,18 @@ static int __init hotkey_init(struct
> ibm_init_struct *iibm)
> &dev_attr_hotkey_tablet_mode.attr);
> }
>
> + /* For X1 Yoga (2016) */
> + if (!res && acpi_evalf(ec_handle, &status, "CMMD", "qd")) {
> + tp_features.hotkey_tablet = 1;
> + tp_features.hotkey_tablet_cmmd = 1;
> + tabletsw_state = (status == TP_EC_CMMD_TABLET_MODE);
> +
> + pr_info("Possible tablet mode switch found; ThinkPad
> in %s mode\n",
> + (tabletsw_state) ? "tablet" : "laptop");
> + res = add_to_attr_set(hotkey_dev_attributes,
> + &dev_attr_hotkey_tablet_mode.a
> ttr);
> + }
> +
> if (!res)
> res = register_attr_set_with_sysfs(
> hotkey_dev_attributes,
> @@ -3899,6 +3925,10 @@ static bool hotkey_notify_6xxx(const u32 hkey,
> *ignore_acpi_ev = true;
> return true;
>
> + case TP_HKEY_EV_TABLET_CHANGED:
> + tpacpi_input_send_tabletsw();
> + break;
> +
> default:
> pr_warn("unknown possible thermal alarm or keyboard
> event received\n");
> known = false;
------------------------------------------------------------------------------
The Command Line: Reinvented for Modern Developers
Did the resurgence of CLI tooling catch you by surprise?
Reconnect with the command line and become more productive.
Learn the new .NET and ASP.NET CLI. Get your free copy!
http://sdm.link/telerik
_______________________________________________
ibm-acpi-devel mailing list
ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
