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Re: [PATCH] thinkpad_acpi: Add support for HKEY version 0x200

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  Re: [PATCH] thinkpad_acpi: Add support for HKEY version 0x200 Lyude Paul <cpaul@redhat.com> - 2016-06-07 19:10 +0200
    Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY  version 0x200 Lyude Paul <cpaul@redhat.com> - 2016-06-07 23:20 +0200
      Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY  version 0x200 Darren Hart <dvhart@infradead.org> - 2016-06-07 23:50 +0200
      Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY  version 0x200 Marco Trevisan (Treviño) <mail@3v1n0.net> - 2016-06-08 00:10 +0200
        Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY  version 0x200 Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2016-06-08 02:00 +0200
          [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200 Lyude <cpaul@redhat.com> - 2016-06-08 17:00 +0200
            Re: [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200 Darren Hart <dvhart@infradead.org> - 2016-06-08 21:40 +0200
            Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY  version 0x200 Marco Trevisan (Treviño) <mail@3v1n0.net> - 2016-06-09 07:20 +0200
              Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY  version 0x200 Darren Hart <dvhart@infradead.org> - 2016-06-09 22:00 +0200
                Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY  version 0x200 Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2016-06-09 23:10 +0200
                  Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY  version 0x200 Darren Hart <dvhart@infradead.org> - 2016-06-10 00:00 +0200

#1416427 — Re: [PATCH] thinkpad_acpi: Add support for HKEY version 0x200

Since nothing's really happened with this patch for a while I figured I'd take
over trying to get this upstream.

Regarding testing: This seems to work fine on the 60 series laptops, and works
fine on previous generations. The one thing I haven't been able to test is an X1
carbon with an adaptive keyboard since I don't seem to have one readily
available here. I'm doing a search around the office to try to find someone who
didn't throw theirs away yet so hopefully I should be able to get back to you on
that soon.

To Dennis: I took the liberty of doing a review of your patch and some testing.
There's a few things that need changing, I've outlined them below: (for the
future, it's recommended to send patches for the kernel inline in emails to make
them easier to review).

> From 8a67f5db1d2918c46b7fa2168e3d0aab2ba92731 Mon Sep 17 00:00:00 2001
> From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> Date: Wed, 13 Apr 2016 13:46:55 +0200
> Subject: [PATCH] thinkpad_acpi: Add support for HKEY version 0x200
> 
> Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> HKEY version 0x200 without adaptive keyboard.
> 
> HKEY version 0x200 has method MHKA with one parameter value.
> Passing parameter value 1 will get hotkey_all_mask (the same like
> HKEY version 0x100 without parameter). Passing parameter value 2 to
> MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> that case there is no adaptive keyboard available.
> 
> Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> ---
>  drivers/platform/x86/thinkpad_acpi.c | 88 ++++++++++++++++++++++++++---------
> -
>  1 file changed, 64 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c
> b/drivers/platform/x86/thinkpad_acpi.c
> index a268a7a..0e72857 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -2043,6 +2043,7 @@ static int hotkey_autosleep_ack;
>  
>  static u32 hotkey_orig_mask;		/* events the BIOS had enabled */
>  static u32 hotkey_all_mask;		/* all events supported in fw */
> +static u32 hotkey_adaptive_all_mask;	/* all adaptive events supported
> in fw */
>  static u32 hotkey_reserved_mask;	/* events better left disabled */
>  static u32 hotkey_driver_mask;		/* events needed by the driver
> */
>  static u32 hotkey_user_mask;		/* events visible to userspace */
> @@ -2742,6 +2743,17 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
>  
>  static DEVICE_ATTR_RO(hotkey_all_mask);
>  
> +/* sysfs hotkey all_mask ----------------------------------------------- */
> +static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
> +			   struct device_attribute *attr,
> +			   char *buf)
> +{
> +	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
> +				hotkey_adaptive_all_mask | hotkey_source_mask);

Make sure when you're indent function calls that split like this onto another
line you indent it like this:

        return snprintf(buf, PAGE_SIZE, "0x%08x\n",
                        hotkey_adaptive_all_mask | hotkey_source_mask);

So that "hotkey_adaptive_all_mask" starts on the column after the starting
paranthesis.
			
> +}
> +
> +static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
> +
>  /* sysfs hotkey recommended_mask --------------------------------------- */
>  static ssize_t hotkey_recommended_mask_show(struct device *dev,
>  					    struct device_attribute *attr,
> @@ -2985,6 +2997,7 @@ static struct attribute *hotkey_attributes[] __initdata
> = {
>  	&dev_attr_wakeup_hotunplug_complete.attr,
>  	&dev_attr_hotkey_mask.attr,
>  	&dev_attr_hotkey_all_mask.attr,
> +	&dev_attr_hotkey_adaptive_all_mask.attr,
>  	&dev_attr_hotkey_recommended_mask.attr,
>  #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
>  	&dev_attr_hotkey_source_mask.attr,
> @@ -3321,20 +3334,6 @@ static int __init hotkey_init(struct ibm_init_struct
> *iibm)
>  	if (!tp_features.hotkey)
>  		return 1;
>  
> -	/*
> -	 * Check if we have an adaptive keyboard, like on the
> -	 * Lenovo Carbon X1 2014 (2nd Gen).
> -	 */
> -	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
> -		if ((hkeyv >> 8) == 2) {
> -			tp_features.has_adaptive_kbd = true;
> -			res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
> -					&adaptive_kbd_attr_group);
> -			if (res)
> -				goto err_exit;
> -		}
> -	}
> -
>  	quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
>  				     ARRAY_SIZE(tpacpi_hotkey_qtable));
>  
> @@ -3357,30 +3356,71 @@ static int __init hotkey_init(struct ibm_init_struct
> *iibm)
>  	   A30, R30, R31, T20-22, X20-21, X22-24.  Detected by checking
>  	   for HKEY interface version 0x100 */
>  	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
> -		if ((hkeyv >> 8) != 1) {
> -			pr_err("unknown version of the HKEY interface:
> 0x%x\n",
> -			       hkeyv);
> -			pr_err("please report this to %s\n", TPACPI_MAIL);
> -		} else {
> +		vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
> +			"firmware HKEY interface version: 0x%x\n",
> +			hkeyv);

The indenting here wasn't correct to begin with, but since we're changing it we
might as well fix it.

> +		switch (hkeyv >> 8) {
> +		case 1:
>  			/*
>  			 * MHKV 0x100 in A31, R40, R40e,
>  			 * T4x, X31, and later
>  			 */
> -			vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
> -				"firmware HKEY interface version: 0x%x\n",
> -				hkeyv);
>  
>  			/* Paranoia check AND init hotkey_all_mask */
>  			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
>  					"MHKA", "qd")) {
>  				pr_err("missing MHKA handler, "
> -				       "please report this to %s\n",
> -				       TPACPI_MAIL);
> +				        "please report this to %s\n",
> +				        TPACPI_MAIL);

The indenting here doesn't need to be changed

> +				/* Fallback: pre-init for FN+F3,F4,F12 */
> +				hotkey_all_mask = 0x080cU;
> +			} else {
> +				tp_features.hotkey_mask = 1;
> +			}
> +			break;
> +
> +		case 2:
> +			/*
> +			 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
> +			 */
> +
> +			/* Paranoia check AND init hotkey_all_mask */
> +			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
> +				"MHKA", "dd", 1)) {
> +				pr_err("missing MHKA handler, "
> +					"please report this to %s\n",
> +					TPACPI_MAIL);

This indenting needs to be fixed as well

Once all those fixes are made and I get that extra testing done we should be
ablew to send it upstream, assuming it doesn't break the X1…

Cheers,
	Lyude

>  				/* Fallback: pre-init for FN+F3,F4,F12 */
>  				hotkey_all_mask = 0x080cU;
>  			} else {
>  				tp_features.hotkey_mask = 1;
>  			}
> +
> +			/*
> +			 * Check if we have an adaptive keyboard, like on the
> +			 * Lenovo Carbon X1 2014 (2nd Gen).
> +			 */
> +			if (acpi_evalf(hkey_handle,&hotkey_adaptive_all_mask,
> +				"MHKA", "dd", 2)) {

Indentation needs to be fixed here as well

> +				if (hotkey_adaptive_all_mask != 0) {
> +					tp_features.has_adaptive_kbd = true;
> +					res = sysfs_create_group(
> +						&tpacpi_pdev->dev.kobj,
> +						&adaptive_kbd_attr_group);
> +					if (res)
> +						goto err_exit;
> +				}
> +			} else {
> +				tp_features.has_adaptive_kbd = false;
> +				hotkey_adaptive_all_mask = 0x0U;
> +			}
> +			break;
> +
> +		default:
> +			pr_err("unknown version of the HKEY interface:
> 0x%x\n",
> +			       hkeyv);
> +			pr_err("please report this to %s\n", TPACPI_MAIL);
> +			break;
>  		}
>  	}
>  
> -- 
> 2.1.4

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#1416642 — Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY version 0x200

Managed to find someone in the office with one of these laptops and it looks
like the adaptive keyboard works perfectly with this patch, so I can give my t-
b:

	Tested-by: Lyude Paul <cpaul@redhat.com>

Cheers,
	Lyude

On Tue, 2016-06-07 at 13:02 -0400, Lyude Paul wrote:
> Since nothing's really happened with this patch for a while I figured I'd take
> over trying to get this upstream.
> 
> Regarding testing: This seems to work fine on the 60 series laptops, and works
> fine on previous generations. The one thing I haven't been able to test is an
> X1
> carbon with an adaptive keyboard since I don't seem to have one readily
> available here. I'm doing a search around the office to try to find someone
> who
> didn't throw theirs away yet so hopefully I should be able to get back to you
> on
> that soon.
> 
> To Dennis: I took the liberty of doing a review of your patch and some
> testing.
> There's a few things that need changing, I've outlined them below: (for the
> future, it's recommended to send patches for the kernel inline in emails to
> make
> them easier to review).
> 
> > 
> > From 8a67f5db1d2918c46b7fa2168e3d0aab2ba92731 Mon Sep 17 00:00:00 2001
> > From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > Date: Wed, 13 Apr 2016 13:46:55 +0200
> > Subject: [PATCH] thinkpad_acpi: Add support for HKEY version 0x200
> > 
> > Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> > HKEY version 0x200 without adaptive keyboard.
> > 
> > HKEY version 0x200 has method MHKA with one parameter value.
> > Passing parameter value 1 will get hotkey_all_mask (the same like
> > HKEY version 0x100 without parameter). Passing parameter value 2 to
> > MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> > that case there is no adaptive keyboard available.
> > 
> > Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > ---
> >  drivers/platform/x86/thinkpad_acpi.c | 88 ++++++++++++++++++++++++++-------
> > --
> > -
> >  1 file changed, 64 insertions(+), 24 deletions(-)
> > 
> > diff --git a/drivers/platform/x86/thinkpad_acpi.c
> > b/drivers/platform/x86/thinkpad_acpi.c
> > index a268a7a..0e72857 100644
> > --- a/drivers/platform/x86/thinkpad_acpi.c
> > +++ b/drivers/platform/x86/thinkpad_acpi.c
> > @@ -2043,6 +2043,7 @@ static int hotkey_autosleep_ack;
> >  
> >  static u32 hotkey_orig_mask;		/* events the BIOS had enabled
> > */
> >  static u32 hotkey_all_mask;		/* all events supported in fw */
> > +static u32 hotkey_adaptive_all_mask;	/* all adaptive events
> > supported
> > in fw */
> >  static u32 hotkey_reserved_mask;	/* events better left disabled */
> >  static u32 hotkey_driver_mask;		/* events needed by the
> > driver
> > */
> >  static u32 hotkey_user_mask;		/* events visible to userspace
> > */
> > @@ -2742,6 +2743,17 @@ static ssize_t hotkey_all_mask_show(struct device
> > *dev,
> >  
> >  static DEVICE_ATTR_RO(hotkey_all_mask);
> >  
> > +/* sysfs hotkey all_mask ----------------------------------------------- */
> > +static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
> > +			   struct device_attribute *attr,
> > +			   char *buf)
> > +{
> > +	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
> > +				hotkey_adaptive_all_mask |
> > hotkey_source_mask);
> Make sure when you're indent function calls that split like this onto another
> line you indent it like this:
> 
>         return snprintf(buf, PAGE_SIZE, "0x%08x\n",
>                         hotkey_adaptive_all_mask | hotkey_source_mask);
> 
> So that "hotkey_adaptive_all_mask" starts on the column after the starting
> paranthesis.
> 			
> > 
> > +}
> > +
> > +static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
> > +
> >  /* sysfs hotkey recommended_mask --------------------------------------- */
> >  static ssize_t hotkey_recommended_mask_show(struct device *dev,
> >  					    struct device_attribute *attr,
> > @@ -2985,6 +2997,7 @@ static struct attribute *hotkey_attributes[]
> > __initdata
> > = {
> >  	&dev_attr_wakeup_hotunplug_complete.attr,
> >  	&dev_attr_hotkey_mask.attr,
> >  	&dev_attr_hotkey_all_mask.attr,
> > +	&dev_attr_hotkey_adaptive_all_mask.attr,
> >  	&dev_attr_hotkey_recommended_mask.attr,
> >  #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
> >  	&dev_attr_hotkey_source_mask.attr,
> > @@ -3321,20 +3334,6 @@ static int __init hotkey_init(struct ibm_init_struct
> > *iibm)
> >  	if (!tp_features.hotkey)
> >  		return 1;
> >  
> > -	/*
> > -	 * Check if we have an adaptive keyboard, like on the
> > -	 * Lenovo Carbon X1 2014 (2nd Gen).
> > -	 */
> > -	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
> > -		if ((hkeyv >> 8) == 2) {
> > -			tp_features.has_adaptive_kbd = true;
> > -			res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
> > -					&adaptive_kbd_attr_group);
> > -			if (res)
> > -				goto err_exit;
> > -		}
> > -	}
> > -
> >  	quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
> >  				     ARRAY_SIZE(tpacpi_hotkey_qtable));
> >  
> > @@ -3357,30 +3356,71 @@ static int __init hotkey_init(struct ibm_init_struct
> > *iibm)
> >  	   A30, R30, R31, T20-22, X20-21, X22-24.  Detected by checking
> >  	   for HKEY interface version 0x100 */
> >  	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
> > -		if ((hkeyv >> 8) != 1) {
> > -			pr_err("unknown version of the HKEY interface:
> > 0x%x\n",
> > -			       hkeyv);
> > -			pr_err("please report this to %s\n", TPACPI_MAIL);
> > -		} else {
> > +		vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
> > +			"firmware HKEY interface version: 0x%x\n",
> > +			hkeyv);
> The indenting here wasn't correct to begin with, but since we're changing it
> we
> might as well fix it.
> 
> > 
> > +		switch (hkeyv >> 8) {
> > +		case 1:
> >  			/*
> >  			 * MHKV 0x100 in A31, R40, R40e,
> >  			 * T4x, X31, and later
> >  			 */
> > -			vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
> > -				"firmware HKEY interface version: 0x%x\n",
> > -				hkeyv);
> >  
> >  			/* Paranoia check AND init hotkey_all_mask */
> >  			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
> >  					"MHKA", "qd")) {
> >  				pr_err("missing MHKA handler, "
> > -				       "please report this to %s\n",
> > -				       TPACPI_MAIL);
> > +				        "please report this to %s\n",
> > +				        TPACPI_MAIL);
> The indenting here doesn't need to be changed
> 
> > 
> > +				/* Fallback: pre-init for FN+F3,F4,F12 */
> > +				hotkey_all_mask = 0x080cU;
> > +			} else {
> > +				tp_features.hotkey_mask = 1;
> > +			}
> > +			break;
> > +
> > +		case 2:
> > +			/*
> > +			 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet
> > (2016)
> > +			 */
> > +
> > +			/* Paranoia check AND init hotkey_all_mask */
> > +			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
> > +				"MHKA", "dd", 1)) {
> > +				pr_err("missing MHKA handler, "
> > +					"please report this to %s\n",
> > +					TPACPI_MAIL);
> This indenting needs to be fixed as well
> 
> Once all those fixes are made and I get that extra testing done we should be
> ablew to send it upstream, assuming it doesn't break the X1…
> 
> Cheers,
> 	Lyude
> 
> > 
> >  				/* Fallback: pre-init for FN+F3,F4,F12 */
> >  				hotkey_all_mask = 0x080cU;
> >  			} else {
> >  				tp_features.hotkey_mask = 1;
> >  			}
> > +
> > +			/*
> > +			 * Check if we have an adaptive keyboard, like on
> > the
> > +			 * Lenovo Carbon X1 2014 (2nd Gen).
> > +			 */
> > +			if
> > (acpi_evalf(hkey_handle,&hotkey_adaptive_all_mask,
> > +				"MHKA", "dd", 2)) {
> Indentation needs to be fixed here as well
> 
> > 
> > +				if (hotkey_adaptive_all_mask != 0) {
> > +					tp_features.has_adaptive_kbd =
> > true;
> > +					res = sysfs_create_group(
> > +						&tpacpi_pdev->dev.kobj,
> > +						&adaptive_kbd_attr_group);
> > +					if (res)
> > +						goto err_exit;
> > +				}
> > +			} else {
> > +				tp_features.has_adaptive_kbd = false;
> > +				hotkey_adaptive_all_mask = 0x0U;
> > +			}
> > +			break;
> > +
> > +		default:
> > +			pr_err("unknown version of the HKEY interface:
> > 0x%x\n",
> > +			       hkeyv);
> > +			pr_err("please report this to %s\n", TPACPI_MAIL);
> > +			break;
> >  		}
> >  	}
> >  
> > -- 
> > 2.1.4
> ------------------------------------------------------------------------------
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> planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e
> _______________________________________________
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> ibm-acpi-devel@lists.sourceforge.net
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#1416652 — Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY version 0x200

On Tue, Jun 07, 2016 at 05:10:51PM -0400, Lyude Paul wrote:
> Managed to find someone in the office with one of these laptops and it looks
> like the adaptive keyboard works perfectly with this patch, so I can give my t-
> b:
> 
> 	Tested-by: Lyude Paul <cpaul@redhat.com>
> 
> Cheers,
> 	Lyude
> 
> On Tue, 2016-06-07 at 13:02 -0400, Lyude Paul wrote:
> > Since nothing's really happened with this patch for a while I figured I'd take
> > over trying to get this upstream.
> > 
> > Regarding testing: This seems to work fine on the 60 series laptops, and works
> > fine on previous generations. The one thing I haven't been able to test is an
> > X1
> > carbon with an adaptive keyboard since I don't seem to have one readily
> > available here. I'm doing a search around the office to try to find someone
> > who
> > didn't throw theirs away yet so hopefully I should be able to get back to you
> > on
> > that soon.
> > 
> > To Dennis: I took the liberty of doing a review of your patch and some
> > testing.
> > There's a few things that need changing, I've outlined them below: (for the
> > future, it's recommended to send patches for the kernel inline in emails to
> > make
> > them easier to review).

If someone would please update the patch with any pending changes from review
and so it follows the rules in Documentation/SubmittingPatches, including the
complete list of recipients on Cc, we can move this forward.

Regards,

-- 
Darren Hart
Intel Open Source Technology Center

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#1416675 — Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY version 0x200

2016-06-07 17:10 GMT-04:00 Lyude Paul <cpaul@redhat.com>:
> Managed to find someone in the office with one of these laptops and it looks
> like the adaptive keyboard works perfectly with this patch, so I can give my t-
> b:
>
>         Tested-by: Lyude Paul <cpaul@redhat.com>
>

I can confirm it works too.

Tested-by: Marco Trevisan <marco@ubuntu.com>

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#1416763 — Re: [ibm-acpi-devel] [PATCH] thinkpad_acpi: Add support for HKEY version 0x200

On Tue, 07 Jun 2016, Marco Trevisan (Treviño) wrote:
> 2016-06-07 17:10 GMT-04:00 Lyude Paul <cpaul@redhat.com>:
> > Managed to find someone in the office with one of these laptops and it looks
> > like the adaptive keyboard works perfectly with this patch, so I can give my t-
> > b:
> >
> >         Tested-by: Lyude Paul <cpaul@redhat.com>
> >
> 
> I can confirm it works too.
> 
> Tested-by: Marco Trevisan <marco@ubuntu.com>

Ok, looks like the patch is safe.  Let's fix the boring details
(formating, etc), and then merge it.

Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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#1417548 — [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200

From: Dennis Wassenberg <dennis.wassenberg@secunet.com>

Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
HKEY version 0x200 without adaptive keyboard.

HKEY version 0x200 has method MHKA with one parameter value.
Passing parameter value 1 will get hotkey_all_mask (the same like
HKEY version 0x100 without parameter). Passing parameter value 2 to
MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
that case there is no adaptive keyboard available.

Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Signed-off-by: Lyude <cpaul@redhat.com>
Tested-by: Lyude <cpaul@redhat.com>
Tested-by: Marco Trevisan <marco@ubuntu.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
---
Changes since v1:
 - Fix all of the indenting issues
 - Add appropriate Tested-by's, Signed-off's, etc.

 drivers/platform/x86/thinkpad_acpi.c | 85 ++++++++++++++++++++++++++----------
 1 file changed, 63 insertions(+), 22 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 9255ff3..210ecf5 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2043,6 +2043,7 @@ static int hotkey_autosleep_ack;
 
 static u32 hotkey_orig_mask;		/* events the BIOS had enabled */
 static u32 hotkey_all_mask;		/* all events supported in fw */
+static u32 hotkey_adaptive_all_mask;	/* all adaptive events supported in fw */
 static u32 hotkey_reserved_mask;	/* events better left disabled */
 static u32 hotkey_driver_mask;		/* events needed by the driver */
 static u32 hotkey_user_mask;		/* events visible to userspace */
@@ -2742,6 +2743,17 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
 
 static DEVICE_ATTR_RO(hotkey_all_mask);
 
+/* sysfs hotkey all_mask ----------------------------------------------- */
+static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
+			   struct device_attribute *attr,
+			   char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+			hotkey_adaptive_all_mask | hotkey_source_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
+
 /* sysfs hotkey recommended_mask --------------------------------------- */
 static ssize_t hotkey_recommended_mask_show(struct device *dev,
 					    struct device_attribute *attr,
@@ -2985,6 +2997,7 @@ static struct attribute *hotkey_attributes[] __initdata = {
 	&dev_attr_wakeup_hotunplug_complete.attr,
 	&dev_attr_hotkey_mask.attr,
 	&dev_attr_hotkey_all_mask.attr,
+	&dev_attr_hotkey_adaptive_all_mask.attr,
 	&dev_attr_hotkey_recommended_mask.attr,
 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
 	&dev_attr_hotkey_source_mask.attr,
@@ -3321,20 +3334,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 	if (!tp_features.hotkey)
 		return 1;
 
-	/*
-	 * Check if we have an adaptive keyboard, like on the
-	 * Lenovo Carbon X1 2014 (2nd Gen).
-	 */
-	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
-		if ((hkeyv >> 8) == 2) {
-			tp_features.has_adaptive_kbd = true;
-			res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
-					&adaptive_kbd_attr_group);
-			if (res)
-				goto err_exit;
-		}
-	}
-
 	quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
 				     ARRAY_SIZE(tpacpi_hotkey_qtable));
 
@@ -3357,18 +3356,16 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 	   A30, R30, R31, T20-22, X20-21, X22-24.  Detected by checking
 	   for HKEY interface version 0x100 */
 	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
-		if ((hkeyv >> 8) != 1) {
-			pr_err("unknown version of the HKEY interface: 0x%x\n",
-			       hkeyv);
-			pr_err("please report this to %s\n", TPACPI_MAIL);
-		} else {
+		vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+			    "firmware HKEY interface version: 0x%x\n",
+			    hkeyv);
+
+		switch (hkeyv >> 8) {
+		case 1:
 			/*
 			 * MHKV 0x100 in A31, R40, R40e,
 			 * T4x, X31, and later
 			 */
-			vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
-				"firmware HKEY interface version: 0x%x\n",
-				hkeyv);
 
 			/* Paranoia check AND init hotkey_all_mask */
 			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
@@ -3381,6 +3378,50 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 			} else {
 				tp_features.hotkey_mask = 1;
 			}
+			break;
+
+		case 2:
+			/*
+			 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
+			 */
+
+			/* Paranoia check AND init hotkey_all_mask */
+			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
+					"MHKA", "dd", 1)) {
+				pr_err("missing MHKA handler, "
+				       "please report this to %s\n",
+				       TPACPI_MAIL);
+				/* Fallback: pre-init for FN+F3,F4,F12 */
+				hotkey_all_mask = 0x080cU;
+			} else {
+				tp_features.hotkey_mask = 1;
+			}
+
+			/*
+			 * Check if we have an adaptive keyboard, like on the
+			 * Lenovo Carbon X1 2014 (2nd Gen).
+			 */
+			if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
+				       "MHKA", "dd", 2)) {
+				if (hotkey_adaptive_all_mask != 0) {
+					tp_features.has_adaptive_kbd = true;
+					res = sysfs_create_group(
+						&tpacpi_pdev->dev.kobj,
+						&adaptive_kbd_attr_group);
+					if (res)
+						goto err_exit;
+				}
+			} else {
+				tp_features.has_adaptive_kbd = false;
+				hotkey_adaptive_all_mask = 0x0U;
+			}
+			break;
+
+		default:
+			pr_err("unknown version of the HKEY interface: 0x%x\n",
+			       hkeyv);
+			pr_err("please report this to %s\n", TPACPI_MAIL);
+			break;
 		}
 	}
 
-- 
2.5.5

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#1417800 — Re: [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200

On Wed, Jun 08, 2016 at 10:54:25AM -0400, Lyude wrote:
> From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> 
> Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> HKEY version 0x200 without adaptive keyboard.
> 
> HKEY version 0x200 has method MHKA with one parameter value.
> Passing parameter value 1 will get hotkey_all_mask (the same like
> HKEY version 0x100 without parameter). Passing parameter value 2 to
> MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> that case there is no adaptive keyboard available.
> 
> Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> Signed-off-by: Lyude <cpaul@redhat.com>
> Tested-by: Lyude <cpaul@redhat.com>
> Tested-by: Marco Trevisan <marco@ubuntu.com>
> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
> ---
> Changes since v1:
>  - Fix all of the indenting issues
>  - Add appropriate Tested-by's, Signed-off's, etc.
> 
>  drivers/platform/x86/thinkpad_acpi.c | 85 ++++++++++++++++++++++++++----------
>  1 file changed, 63 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index 9255ff3..210ecf5 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -2043,6 +2043,7 @@ static int hotkey_autosleep_ack;
>  
>  static u32 hotkey_orig_mask;		/* events the BIOS had enabled */
>  static u32 hotkey_all_mask;		/* all events supported in fw */
> +static u32 hotkey_adaptive_all_mask;	/* all adaptive events supported in fw */
>  static u32 hotkey_reserved_mask;	/* events better left disabled */
>  static u32 hotkey_driver_mask;		/* events needed by the driver */
>  static u32 hotkey_user_mask;		/* events visible to userspace */
> @@ -2742,6 +2743,17 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
>  
>  static DEVICE_ATTR_RO(hotkey_all_mask);
>  
> +/* sysfs hotkey all_mask ----------------------------------------------- */
> +static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
> +			   struct device_attribute *attr,
> +			   char *buf)
> +{
> +	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
> +			hotkey_adaptive_all_mask | hotkey_source_mask);
> +}
> +
> +static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
> +
>  /* sysfs hotkey recommended_mask --------------------------------------- */
>  static ssize_t hotkey_recommended_mask_show(struct device *dev,
>  					    struct device_attribute *attr,
> @@ -2985,6 +2997,7 @@ static struct attribute *hotkey_attributes[] __initdata = {
>  	&dev_attr_wakeup_hotunplug_complete.attr,
>  	&dev_attr_hotkey_mask.attr,
>  	&dev_attr_hotkey_all_mask.attr,
> +	&dev_attr_hotkey_adaptive_all_mask.attr,
>  	&dev_attr_hotkey_recommended_mask.attr,
>  #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
>  	&dev_attr_hotkey_source_mask.attr,
> @@ -3321,20 +3334,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
>  	if (!tp_features.hotkey)
>  		return 1;
>  
> -	/*
> -	 * Check if we have an adaptive keyboard, like on the
> -	 * Lenovo Carbon X1 2014 (2nd Gen).
> -	 */
> -	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
> -		if ((hkeyv >> 8) == 2) {
> -			tp_features.has_adaptive_kbd = true;
> -			res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
> -					&adaptive_kbd_attr_group);
> -			if (res)
> -				goto err_exit;
> -		}
> -	}
> -
>  	quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
>  				     ARRAY_SIZE(tpacpi_hotkey_qtable));
>  
> @@ -3357,18 +3356,16 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
>  	   A30, R30, R31, T20-22, X20-21, X22-24.  Detected by checking
>  	   for HKEY interface version 0x100 */
>  	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
> -		if ((hkeyv >> 8) != 1) {
> -			pr_err("unknown version of the HKEY interface: 0x%x\n",
> -			       hkeyv);
> -			pr_err("please report this to %s\n", TPACPI_MAIL);
> -		} else {
> +		vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
> +			    "firmware HKEY interface version: 0x%x\n",
> +			    hkeyv);
> +
> +		switch (hkeyv >> 8) {
> +		case 1:
>  			/*
>  			 * MHKV 0x100 in A31, R40, R40e,
>  			 * T4x, X31, and later
>  			 */
> -			vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
> -				"firmware HKEY interface version: 0x%x\n",
> -				hkeyv);
>  
>  			/* Paranoia check AND init hotkey_all_mask */
>  			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
> @@ -3381,6 +3378,50 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
>  			} else {
>  				tp_features.hotkey_mask = 1;
>  			}
> +			break;
> +
> +		case 2:
> +			/*
> +			 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
> +			 */
> +
> +			/* Paranoia check AND init hotkey_all_mask */
> +			if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
> +					"MHKA", "dd", 1)) {
> +				pr_err("missing MHKA handler, "
> +				       "please report this to %s\n",

Strings should be kept on the same line so they can be searched for in the
sources. I've corrected this here as well as the existing duplicate message in case 1.

Otherwise, queued for 4.8. Thanks.

-- 
Darren Hart
Intel Open Source Technology Center

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#1418081 — Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200

2016-06-08 10:54 GMT-04:00 Lyude <cpaul@redhat.com>:
> From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
>
> Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> HKEY version 0x200 without adaptive keyboard.
>
> HKEY version 0x200 has method MHKA with one parameter value.
> Passing parameter value 1 will get hotkey_all_mask (the same like
> HKEY version 0x100 without parameter). Passing parameter value 2 to
> MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> that case there is no adaptive keyboard available.
>
> Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> Signed-off-by: Lyude <cpaul@redhat.com>
> Tested-by: Lyude <cpaul@redhat.com>
> Tested-by: Marco Trevisan <marco@ubuntu.com>
> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

Can you also Cc: stable@vger.kernel.org so that it can be imported
there once merged?

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#1418615 — Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200

On Thu, Jun 09, 2016 at 01:05:12AM -0400, Marco Trevisan (Treviño) wrote:
> 2016-06-08 10:54 GMT-04:00 Lyude <cpaul@redhat.com>:
> > From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> >
> > Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> > HKEY version 0x200 without adaptive keyboard.
> >
> > HKEY version 0x200 has method MHKA with one parameter value.
> > Passing parameter value 1 will get hotkey_all_mask (the same like
> > HKEY version 0x100 without parameter). Passing parameter value 2 to
> > MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> > that case there is no adaptive keyboard available.
> >
> > Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > Signed-off-by: Lyude <cpaul@redhat.com>
> > Tested-by: Lyude <cpaul@redhat.com>
> > Tested-by: Marco Trevisan <marco@ubuntu.com>
> > Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
> 
> Can you also Cc: stable@vger.kernel.org so that it can be imported
> there once merged?

It doesn't meet stable kernel rules unfortunately, with 143 lines diff.

Henrique, do you want to weigh in on whether this goes back to stable?

One thing I could do is include this in my 4.7-rc fixes branch instead of
waiting for 4.8.

-- 
Darren Hart
Intel Open Source Technology Center

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#1418659 — Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200

On Thu, 09 Jun 2016, Darren Hart wrote:
> On Thu, Jun 09, 2016 at 01:05:12AM -0400, Marco Trevisan (Treviño) wrote:
> > 2016-06-08 10:54 GMT-04:00 Lyude <cpaul@redhat.com>:
> > > From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > >
> > > Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> > > HKEY version 0x200 without adaptive keyboard.
> > >
> > > HKEY version 0x200 has method MHKA with one parameter value.
> > > Passing parameter value 1 will get hotkey_all_mask (the same like
> > > HKEY version 0x100 without parameter). Passing parameter value 2 to
> > > MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> > > that case there is no adaptive keyboard available.
> > >
> > > Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > > Signed-off-by: Lyude <cpaul@redhat.com>
> > > Tested-by: Lyude <cpaul@redhat.com>
> > > Tested-by: Marco Trevisan <marco@ubuntu.com>
> > > Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
> > 
> > Can you also Cc: stable@vger.kernel.org so that it can be imported
> > there once merged?
> 
> It doesn't meet stable kernel rules unfortunately, with 143 lines diff.
> 
> Henrique, do you want to weigh in on whether this goes back to stable?

It should be in a bunch of -rc kernel releases before we even consider
it.

> One thing I could do is include this in my 4.7-rc fixes branch instead of
> waiting for 4.8.

If Linus will take it, I don't see a problem with that.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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#1418823 — Re: [ibm-acpi-devel] [PATCH v2] thinkpad_acpi: Add support for HKEY version 0x200

On Thu, Jun 09, 2016 at 06:04:52PM -0300, Henrique de Moraes Holschuh wrote:
> On Thu, 09 Jun 2016, Darren Hart wrote:
> > On Thu, Jun 09, 2016 at 01:05:12AM -0400, Marco Trevisan (Treviño) wrote:
> > > 2016-06-08 10:54 GMT-04:00 Lyude <cpaul@redhat.com>:
> > > > From: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > > >
> > > > Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
> > > > HKEY version 0x200 without adaptive keyboard.
> > > >
> > > > HKEY version 0x200 has method MHKA with one parameter value.
> > > > Passing parameter value 1 will get hotkey_all_mask (the same like
> > > > HKEY version 0x100 without parameter). Passing parameter value 2 to
> > > > MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
> > > > that case there is no adaptive keyboard available.
> > > >
> > > > Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
> > > > Signed-off-by: Lyude <cpaul@redhat.com>
> > > > Tested-by: Lyude <cpaul@redhat.com>
> > > > Tested-by: Marco Trevisan <marco@ubuntu.com>
> > > > Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
> > > 
> > > Can you also Cc: stable@vger.kernel.org so that it can be imported
> > > there once merged?
> > 
> > It doesn't meet stable kernel rules unfortunately, with 143 lines diff.
> > 
> > Henrique, do you want to weigh in on whether this goes back to stable?
> 
> It should be in a bunch of -rc kernel releases before we even consider
> it.
> 
> > One thing I could do is include this in my 4.7-rc fixes branch instead of
> > waiting for 4.8.
> 
> If Linus will take it, I don't see a problem with that.

I'll do that.

-- 
Darren Hart
Intel Open Source Technology Center

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