From: Jassi Brar <jassisinghbrar@gmail.com>
To: Samuel Holland <samuel@sholland.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>,
Chen-Yu Tsai <wens@csie.org>, Rob Herring <robh+dt@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, ",
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
srv_heupstream" <linux-arm-kernel@lists.infradead.org>,
Devicetree List <devicetree@vger.kernel.org>,
Andre Przywara <andre.przywara@arm.com>
Subject: Re: [PATCH 3/3] mailbox: sunxi-msgbox: Add a new mailbox driver
Date: Wed, 28 Feb 2018 14:46:13 +0530 [thread overview]
Message-ID: <CABb+yY2uueAK9kzXzU9DT2a4NtV3kK2dc_wtyFWTBn8=Z6Vi7Q@mail.gmail.com> (raw)
In-Reply-To: <20180228022714.30068-4-samuel@sholland.org>
On Wed, Feb 28, 2018 at 7:57 AM, Samuel Holland <samuel@sholland.org> wrote:
....
> +/*
> + * The message box hardware provides 8 unidirectional channels. As the mailbox
> + * framework expects them to be bidirectional
>
That is incorrect. Mailbox framework does not require a channel to be
TX and RX capable.
You should expose each channel as per its physical capability, let the
client configure it for direction (if its bidirectional) and acquire
separate channels for RX and TX if it needs to.
Cheers!
WARNING: multiple messages have this Message-ID (diff)
From: jassisinghbrar@gmail.com (Jassi Brar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] mailbox: sunxi-msgbox: Add a new mailbox driver
Date: Wed, 28 Feb 2018 14:46:13 +0530 [thread overview]
Message-ID: <CABb+yY2uueAK9kzXzU9DT2a4NtV3kK2dc_wtyFWTBn8=Z6Vi7Q@mail.gmail.com> (raw)
In-Reply-To: <20180228022714.30068-4-samuel@sholland.org>
On Wed, Feb 28, 2018 at 7:57 AM, Samuel Holland <samuel@sholland.org> wrote:
....
> +/*
> + * The message box hardware provides 8 unidirectional channels. As the mailbox
> + * framework expects them to be bidirectional
>
That is incorrect. Mailbox framework does not require a channel to be
TX and RX capable.
You should expose each channel as per its physical capability, let the
client configure it for direction (if its bidirectional) and acquire
separate channels for RX and TX if it needs to.
Cheers!
next prev parent reply other threads:[~2018-02-28 9:16 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-28 2:27 [PATCH 0/3] Allwinner sunxi message box support Samuel Holland
2018-02-28 2:27 ` Samuel Holland
2018-02-28 2:27 ` [PATCH 1/3] dt-bindings: Add a binding for the sunxi message box Samuel Holland
2018-02-28 2:27 ` Samuel Holland
2018-02-28 8:28 ` Maxime Ripard
2018-02-28 8:28 ` Maxime Ripard
2018-02-28 17:17 ` Andre Przywara
2018-02-28 17:17 ` Andre Przywara
2018-03-01 10:03 ` Maxime Ripard
2018-03-01 10:03 ` Maxime Ripard
2018-02-28 17:52 ` Samuel Holland
2018-02-28 17:52 ` Samuel Holland
2018-02-28 2:27 ` [PATCH 2/3] mailbox: Avoid NULL dereference in mbox_chan_received_data Samuel Holland
2018-02-28 2:27 ` Samuel Holland
2018-02-28 17:17 ` Andre Przywara
2018-02-28 17:17 ` Andre Przywara
2018-03-01 13:32 ` Jassi Brar
2018-03-01 13:32 ` Jassi Brar
2018-02-28 2:27 ` [PATCH 3/3] mailbox: sunxi-msgbox: Add a new mailbox driver Samuel Holland
2018-02-28 2:27 ` Samuel Holland
2018-02-28 8:32 ` Maxime Ripard
2018-02-28 8:32 ` Maxime Ripard
2018-02-28 17:19 ` Samuel Holland
2018-02-28 17:19 ` Samuel Holland
2018-03-01 10:32 ` Maxime Ripard
2018-03-01 10:32 ` Maxime Ripard
2018-03-01 11:32 ` Andre Przywara
2018-03-01 11:32 ` Andre Przywara
2018-03-01 11:51 ` Maxime Ripard
2018-03-01 11:51 ` Maxime Ripard
2018-02-28 9:16 ` Jassi Brar [this message]
2018-02-28 9:16 ` Jassi Brar
2018-02-28 17:51 ` Samuel Holland
2018-02-28 17:51 ` Samuel Holland
2018-02-28 18:14 ` Jassi Brar
2018-02-28 18:14 ` Jassi Brar
2018-02-28 18:14 ` Jassi Brar
2018-02-28 18:56 ` Samuel Holland
2018-02-28 18:56 ` Samuel Holland
2018-02-28 18:56 ` Samuel Holland
2018-03-01 5:22 ` Jassi Brar
2018-03-01 5:22 ` Jassi Brar
2018-03-01 5:22 ` Jassi Brar
2018-02-28 8:24 ` [PATCH 0/3] Allwinner sunxi message box support Maxime Ripard
2018-02-28 8:24 ` Maxime Ripard
2018-02-28 17:18 ` Samuel Holland
2018-02-28 17:18 ` Samuel Holland
2018-03-01 10:28 ` Maxime Ripard
2018-03-01 10:28 ` Maxime Ripard
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