linux-kernel - Re: [PATCH v3 2/3] hwrng: add Rockchip SoC hwrng driver

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Date: Fri, 21 Jun 2024 11:32:47 +0200
From: Diederik de Haas <didi.debian@...ow.org>
To: Daniel Golle <daniel@...rotopia.org>,
 Aurelien Jarno <aurelien@...el32.net>, Olivia Mackall <olivia@...enic.com>,
 Herbert Xu <herbert@...dor.apana.org.au>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 Heiko Stuebner <heiko@...ech.de>, Philipp Zabel <p.zabel@...gutronix.de>,
 Uwe Kleine-König <ukleinek@...ian.org>,
 Sebastian Reichel <sebastian.reichel@...labora.com>,
 Anand Moon <linux.amoon@...il.com>, Dragan Simic <dsimic@...jaro.org>,
 Sascha Hauer <s.hauer@...gutronix.de>, Martin Kaiser <martin@...ser.cx>,
 Ard Biesheuvel <ardb@...nel.org>, linux-crypto@...r.kernel.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Daniel Golle <daniel@...rotopia.org>
Subject: Re: [PATCH v3 2/3] hwrng: add Rockchip SoC hwrng driver

Hi,

On Friday, 21 June 2024 03:25:18 CEST Daniel Golle wrote:
> diff --git a/drivers/char/hw_random/rockchip-rng.c
> b/drivers/char/hw_random/rockchip-rng.c new file mode 100644
> index 000000000000..6070abb73847
> --- /dev/null
> +++ b/drivers/char/hw_random/rockchip-rng.c
> @@ -0,0 +1,229 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * rockchip-rng.c True Random Number Generator driver for Rockchip SoCs
> + *
> + * Copyright (c) 2018, Fuzhou Rockchip Electronics Co., Ltd.
> + * Copyright (c) 2022, Aurelien Jarno
> + * Authors:
> + *  Lin Jinhan <troy.lin@...k-chips.com>
> + *  Aurelien Jarno <aurelien@...el32.net>
> + */
> +#include <linux/clk.h>
> +#include <linux/hw_random.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of_platform.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/reset.h>
> +#include <linux/slab.h>

I've been using a modified version of Aurelien's patch myself and I added the 
following to my commit description:

```
hwrng: rockchip: Explicitly include correct DT includes

Similar to commit 
045a44d4c9b3 ("regulator: Explicitly include correct DT includes")
replace ``of_platform.h`` include with ``of.h`` and ``platform_device.h``.

Link: https://git.kernel.org/linus/045a44d4c9b32578aacf0811063e5bb741c7c32c
```

BUT I don't (really) know what I'm doing, so could you verify whether there is 
some merit to it?

Cheers,
  Diederik
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