[1/2] ALSA: hda - Add a new match function for only undef configurations
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Message ID 20190815083001.3793-1-hui.wang@canonical.com
State New
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  • [1/2] ALSA: hda - Add a new match function for only undef configurations
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Commit Message

Hui Wang Aug. 15, 2019, 8:30 a.m. UTC
With the existing pintbl, we already have many entries in it. it is
better to figure out a new match to reduce the size of the pintbl.

For example, there are over 10 entries in the pintbl for:
0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE

If we define a new tbl like below, and with the new adding match
function, we can remove those over 10 entries:
SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
	{0x19, 0x40000000},
	{0x1a, 0x40000000},),

Here we put 0x19 and 0x1a in the tbl just because these two pins are
undefined on Dell laptops with the codec alc255, and these two pins
will be overwritten by ALC255_FIXUP_DELL1_MIC_NO_PRESENCE.

In summary: the new match will check vendor id and codec id first,
then check the pin_cfg defined in the tbl, only all pin_cfgs in the
tbl are undef and the corresponding pin_cfgs on the laptop are undef
too, this match returns true.

This new match function has lower priority than existing match
functions, so the existing tbls still work as before after applying this
patch.

My plan is to change the existing tbl to undef tbl for MIC_NO_PRESENCE
fixups gradually.

Signed-off-by: Hui Wang <hui.wang@canonical.com>
---
 sound/pci/hda/hda_auto_parser.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

Comments

Greg KH Aug. 15, 2019, 8:42 a.m. UTC | #1
On Thu, Aug 15, 2019 at 04:30:00PM +0800, Hui Wang wrote:
> With the existing pintbl, we already have many entries in it. it is
> better to figure out a new match to reduce the size of the pintbl.
> 
> For example, there are over 10 entries in the pintbl for:
> 0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
> 
> If we define a new tbl like below, and with the new adding match
> function, we can remove those over 10 entries:
> SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
> 	{0x19, 0x40000000},
> 	{0x1a, 0x40000000},),
> 
> Here we put 0x19 and 0x1a in the tbl just because these two pins are
> undefined on Dell laptops with the codec alc255, and these two pins
> will be overwritten by ALC255_FIXUP_DELL1_MIC_NO_PRESENCE.
> 
> In summary: the new match will check vendor id and codec id first,
> then check the pin_cfg defined in the tbl, only all pin_cfgs in the
> tbl are undef and the corresponding pin_cfgs on the laptop are undef
> too, this match returns true.
> 
> This new match function has lower priority than existing match
> functions, so the existing tbls still work as before after applying this
> patch.
> 
> My plan is to change the existing tbl to undef tbl for MIC_NO_PRESENCE
> fixups gradually.
> 
> Signed-off-by: Hui Wang <hui.wang@canonical.com>
> ---
>  sound/pci/hda/hda_auto_parser.c | 32 +++++++++++++++++++++++++++++++-
>  1 file changed, 31 insertions(+), 1 deletion(-)


<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>
Hui Wang Aug. 15, 2019, 8:47 a.m. UTC | #2
Sorry, please ignore this patchset, don't plan to send this patchset to 
stable and there is some issue in the patch, will send v2.

On 2019/8/15 下午4:30, Hui Wang wrote:
> With the existing pintbl, we already have many entries in it. it is
> better to figure out a new match to reduce the size of the pintbl.
>
> For example, there are over 10 entries in the pintbl for:
> 0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
>
> If we define a new tbl like below, and with the new adding match
> function, we can remove those over 10 entries:
> SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
> 	{0x19, 0x40000000},
> 	{0x1a, 0x40000000},),
>
> Here we put 0x19 and 0x1a in the tbl just because these two pins are
> undefined on Dell laptops with the codec alc255, and these two pins
> will be overwritten by ALC255_FIXUP_DELL1_MIC_NO_PRESENCE.
>
> In summary: the new match will check vendor id and codec id first,
> then check the pin_cfg defined in the tbl, only all pin_cfgs in the
> tbl are undef and the corresponding pin_cfgs on the laptop are undef
> too, this match returns true.
>
> This new match function has lower priority than existing match
> functions, so the existing tbls still work as before after applying this
> patch.
>
> My plan is to change the existing tbl to undef tbl for MIC_NO_PRESENCE
> fixups gradually.
>
> Signed-off-by: Hui Wang <hui.wang@canonical.com>
> ---
>   sound/pci/hda/hda_auto_parser.c | 32 +++++++++++++++++++++++++++++++-
>   1 file changed, 31 insertions(+), 1 deletion(-)
>
> diff --git a/sound/pci/hda/hda_auto_parser.c b/sound/pci/hda/hda_auto_parser.c
> index 92390d457567..cfada7401b86 100644
> --- a/sound/pci/hda/hda_auto_parser.c
> +++ b/sound/pci/hda/hda_auto_parser.c
> @@ -915,6 +915,36 @@ static bool pin_config_match(struct hda_codec *codec,
>   	return true;
>   }
>   
> +/* match the pintbl which only contains specific pins with undef configuration */
> +static bool pin_config_match_undef(struct hda_codec *codec,
> +				   const struct hda_pintbl *pins)
> +{
> +	bool match = false;
> +
> +	for (; pins->nid; pins++) {
> +		const struct hda_pincfg *pin;
> +		int i;
> +
> +		if ((pins->val & 0xf0000000) != 0x40000000)
> +			return false;
> +
> +		match = false;
> +		snd_array_for_each(&codec->init_pins, i, pin) {
> +			if (pin->nid != pins->nid)
> +				continue;
> +			if ((pin->cfg & 0xf0000000) != 0x40000000)
> +				return false;
> +			match = true;
> +			break;
> +		}
> +
> +		if (match == false)
> +			return false;
> +	}
> +
> +	return match;
> +}
> +
>   /**
>    * snd_hda_pick_pin_fixup - Pick up a fixup matching with the pin quirk list
>    * @codec: the HDA codec
> @@ -935,7 +965,7 @@ void snd_hda_pick_pin_fixup(struct hda_codec *codec,
>   			continue;
>   		if (codec->core.vendor_id != pq->codec)
>   			continue;
> -		if (pin_config_match(codec, pq->pins)) {
> +		if (pin_config_match(codec, pq->pins) || pin_config_match_undef(codec, pq->pins)) {
>   			codec->fixup_id = pq->value;
>   #ifdef CONFIG_SND_DEBUG_VERBOSE
>   			codec->fixup_name = pq->name;

Patch
diff mbox series

diff --git a/sound/pci/hda/hda_auto_parser.c b/sound/pci/hda/hda_auto_parser.c
index 92390d457567..cfada7401b86 100644
--- a/sound/pci/hda/hda_auto_parser.c
+++ b/sound/pci/hda/hda_auto_parser.c
@@ -915,6 +915,36 @@  static bool pin_config_match(struct hda_codec *codec,
 	return true;
 }
 
+/* match the pintbl which only contains specific pins with undef configuration */
+static bool pin_config_match_undef(struct hda_codec *codec,
+				   const struct hda_pintbl *pins)
+{
+	bool match = false;
+
+	for (; pins->nid; pins++) {
+		const struct hda_pincfg *pin;
+		int i;
+
+		if ((pins->val & 0xf0000000) != 0x40000000)
+			return false;
+
+		match = false;
+		snd_array_for_each(&codec->init_pins, i, pin) {
+			if (pin->nid != pins->nid)
+				continue;
+			if ((pin->cfg & 0xf0000000) != 0x40000000)
+				return false;
+			match = true;
+			break;
+		}
+
+		if (match == false)
+			return false;
+	}
+
+	return match;
+}
+
 /**
  * snd_hda_pick_pin_fixup - Pick up a fixup matching with the pin quirk list
  * @codec: the HDA codec
@@ -935,7 +965,7 @@  void snd_hda_pick_pin_fixup(struct hda_codec *codec,
 			continue;
 		if (codec->core.vendor_id != pq->codec)
 			continue;
-		if (pin_config_match(codec, pq->pins)) {
+		if (pin_config_match(codec, pq->pins) || pin_config_match_undef(codec, pq->pins)) {
 			codec->fixup_id = pq->value;
 #ifdef CONFIG_SND_DEBUG_VERBOSE
 			codec->fixup_name = pq->name;