[PATCH v2] brcmfmac: of: introduce new property to allow disable PNO

[PATCH v2] brcmfmac: of: introduce new property to allow disable PNO

[Hermes Zhang]

From: Hermes Zhang <chenhuiz@axis.com>

The PNO feature need to be disable for some scenario in different
product. This commit introduce a new property to allow the
product-specific toggling of this feature.

Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
---

Notes:
    Change property name to brcm,pno-disable

 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
index 8623bde5eb70..121a195e4054 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
@@ -11,6 +11,7 @@
 #include "core.h"
 #include "common.h"
 #include "of.h"
+#include "feature.h"
 
 static int brcmf_of_get_country_codes(struct device *dev,
 				      struct brcmf_mp_device *settings)
@@ -102,6 +103,9 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
 	if (bus_type != BRCMF_BUSTYPE_SDIO)
 		return;
 
+	if (of_find_property(np, "brcm,pno-disable", NULL))
+		settings->feature_disable |= BIT(BRCMF_FEAT_PNO);
+
 	if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0)
 		sdio->drive_strength = val;
 
-- 
2.30.2

Re: [PATCH v2] brcmfmac: of: introduce new property to allow disable PNO

[Kalle Valo]

Hermes Zhang <chenhui.zhang@axis.com> writes:

> From: Hermes Zhang <chenhuiz@axis.com>
>
> The PNO feature need to be disable for some scenario in different
> product. This commit introduce a new property to allow the
> product-specific toggling of this feature.

"some scenario"? That's not really helpful.

> Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
> ---
>
> Notes:
>     Change property name to brcm,pno-disable
>
>  drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
> index 8623bde5eb70..121a195e4054 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
> @@ -11,6 +11,7 @@
>  #include "core.h"
>  #include "common.h"
>  #include "of.h"
> +#include "feature.h"
>  
>  static int brcmf_of_get_country_codes(struct device *dev,
>  				      struct brcmf_mp_device *settings)
> @@ -102,6 +103,9 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
>  	if (bus_type != BRCMF_BUSTYPE_SDIO)
>  		return;
>  
> +	if (of_find_property(np, "brcm,pno-disable", NULL))
> +		settings->feature_disable |= BIT(BRCMF_FEAT_PNO);

Is this DT property documented and acked by the Device Tree maintainers?
AFAIK DT is not supposed to be used as a software configuration
database.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Re: [PATCH v2] brcmfmac: of: introduce new property to allow disable PNO

[Arend van Spriel]

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On 4/22/2022 7:59 AM, Kalle Valo wrote:
> Hermes Zhang <chenhui.zhang@axis.com> writes:
> 
>> From: Hermes Zhang <chenhuiz@axis.com>
>>
>> The PNO feature need to be disable for some scenario in different
>> product. This commit introduce a new property to allow the
>> product-specific toggling of this feature.
> 
> "some scenario"? That's not really helpful.

The firmware feature PNO is used to provide the scheduled scan 
functionality. User-space can choose whether or not to use scheduled 
scan. If the scheduled scan is not working I would rather see a bug 
report so it can be properly investigated.

Regards,
Arend

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