From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Paul Cercueil <paul@crapouillou.net>
Cc: David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
Boris Brezillon <bbrezillon@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Harvey Hunt <harveyhuntnexus@gmail.com>,
linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 8/9] mtd: rawnand: ingenic: Add support for the JZ4725B
Date: Mon, 4 Mar 2019 11:35:19 +0100 [thread overview]
Message-ID: <20190304113519.2e102b25@xps13> (raw)
In-Reply-To: <20190209192305.4434-8-paul@crapouillou.net>
Hi Paul,
Paul Cercueil <paul@crapouillou.net> wrote on Sat, 9 Feb 2019 16:23:04
-0300:
> The boot ROM of the JZ4725B SoC expects a specific OOB layout on the
> NAND, so we use it unconditionally in the ingenic-nand driver.
>
> Also add the jz4725b-bch driver to support the JZ4725B-specific BCH
> hardware.
>
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
>
> Changes:
>
> v2: Instead of forcing the OOB layout, leave it to the board code or
> devicetree to decide if the jz4725b-specific layout should be used
> or not.
>
> v3: - Revert the change in v2, as the previous behaviour was correct.
> - Also add support for the hardware BCH of the JZ4725B in this
> patch.
>
> v4: - Add MODULE_* macros
> - Add tweaks suggested by upstream feedback
>
> drivers/mtd/nand/raw/ingenic/Kconfig | 10 +
> drivers/mtd/nand/raw/ingenic/Makefile | 1 +
> drivers/mtd/nand/raw/ingenic/ingenic_nand.c | 48 ++++-
> drivers/mtd/nand/raw/ingenic/jz4725b_bch.c | 292 ++++++++++++++++++++++++++++
> 4 files changed, 350 insertions(+), 1 deletion(-)
> create mode 100644 drivers/mtd/nand/raw/ingenic/jz4725b_bch.c
>
[...]
> +static int jz4725b_calculate(struct ingenic_ecc *bch,
> + struct ingenic_ecc_params *params,
> + const u8 *buf, u8 *ecc_code)
> +{
> + int ret;
> +
> + mutex_lock(&bch->lock);
> + ret = jz4725b_bch_init(bch, params, true);
I really don't like this bch_init name. A BCH initialization is what is
supposed to be done only once (probably at boot time), can you find a
better name or a better organization of the correct/calculate path?
> + if (ret) {
> + dev_err(bch->dev, "Unable to init BCH with given parameters\n");
> + goto out_disable;
> + }
> +
> + jz4725b_bch_write_data(bch, buf, params->size);
> +
> + ret = jz4725b_bch_wait_complete(bch, BCH_BHINT_ENCF, NULL);
> + if (ret) {
> + dev_err(bch->dev, "timed out while calculating ECC\n");
> + goto out_disable;
> + }
> +
> + jz4725b_bch_read_parity(bch, ecc_code, params->bytes);
> +
> +out_disable:
> + jz4725b_bch_disable(bch);
> + mutex_unlock(&bch->lock);
> +
> + return ret;
> +}
> +
[...]
Thanks,
Miquèl
next prev parent reply other threads:[~2019-03-04 10:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-09 19:22 [PATCH v4 1/9] dt-bindings: mtd: ingenic: Add compatible strings for JZ4740 and JZ4725B Paul Cercueil
2019-02-09 19:22 ` [PATCH v4 2/9] dt-bindings: mtd: ingenic: Change 'BCH' to 'ECC' in documentation Paul Cercueil
2019-02-13 21:46 ` Rob Herring
2019-03-04 9:50 ` Miquel Raynal
2019-03-04 18:23 ` Paul Cercueil
2019-03-04 18:58 ` Miquel Raynal
2019-03-13 12:59 ` Paul Cercueil
2019-03-13 13:12 ` Miquel Raynal
2019-02-09 19:22 ` [PATCH v4 3/9] mtd: rawnand: Move drivers for Ingenic SoCs to subfolder Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 4/9] mtd: rawnand: ingenic: Use SPDX license notifiers Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 5/9] mtd: rawnand: ingenic: Rename jz4780_nand driver to ingenic_nand Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 6/9] mtd: rawnand: ingenic: Separate top-level and SoC specific code Paul Cercueil
2019-03-04 10:20 ` Miquel Raynal
2019-03-04 18:26 ` Paul Cercueil
2019-03-04 19:04 ` Miquel Raynal
2019-02-09 19:23 ` [PATCH v4 7/9] mtd: rawnand: ingenic: Add support for the JZ4740 Paul Cercueil
2019-03-04 10:34 ` Miquel Raynal
2019-03-04 18:28 ` Paul Cercueil
2019-03-04 19:07 ` Miquel Raynal
2019-02-09 19:23 ` [PATCH v4 8/9] mtd: rawnand: ingenic: Add support for the JZ4725B Paul Cercueil
2019-03-04 10:35 ` Miquel Raynal [this message]
2019-03-04 18:30 ` Paul Cercueil
2019-03-04 19:09 ` Miquel Raynal
2019-03-13 12:46 ` Paul Cercueil
2019-02-09 19:23 ` [PATCH v4 9/9] mtd: rawnand: ingenic: Add ooblayout for the Qi Ben Nanonote Paul Cercueil
2019-02-13 21:45 ` [PATCH v4 1/9] dt-bindings: mtd: ingenic: Add compatible strings for JZ4740 and JZ4725B Rob Herring
2019-03-04 9:45 ` Miquel Raynal
2019-03-04 18:22 ` Paul Cercueil
2019-03-04 18:51 ` Miquel Raynal
2019-03-13 12:55 ` Paul Cercueil
2019-03-13 13:09 ` Boris Brezillon
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