linux-kernel - Re: [PATCH 8/9] pinctrl: mvebu: add driver for Armada CP110 pinctrl

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Date:   Sat, 20 May 2017 15:09:04 -0400
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     Gregory CLEMENT <gregory.clement@...e-electrons.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Russell King <rmk+kernel@...linux.org.uk>,
        Nadav Haklai <nadavh@...vell.com>,
        Kostya Porotchkin <kostap@...vell.com>,
        Neta Zur Hershkovits <neta@...vell.com>,
        Marcin Wojtas <mw@...ihalf.com>,
        Omri Itach <omrii@...vell.com>,
        Shadi Ammouri <shadi@...vell.com>,
        Hanna Hawa <hannah@...vell.com>,
        Grzegorz Jaszczyk <jaz@...ihalf.com>
Subject: Re: [PATCH 8/9] pinctrl: mvebu: add driver for Armada CP110 pinctrl

On Fri, May 19, 2017 at 12:04 PM, Gregory CLEMENT
<gregory.clement@...e-electrons.com> wrote:
> From: Hanna Hawa <hannah@...vell.com>
>
> This commit adds a pinctrl driver for the CP110 part of the Marvell
> Armada 7K and 8K SoCs. The Armada 7K has a single CP110, where almost all
> the MPP pins are available. On the other side, the Armada 8K has two
> CP110, and the available MPPs are split between the master CP110 (MPPs 32
> to 62) and the slave CP110 (MPPs 0 to 31).
>
> The register interface to control the MPPs is however the same as all
> other mvebu SoCs, so we can reuse the common pinctrl-mvebu.c logic.
>
> Signed-off-by: Hanna Hawa <hannah@...vell.com>
> Reviewed-by: Shadi Ammouri <shadi@...vell.com>
>
> [updated for mvebu pinctrl and 4.9 changes:
>  - converted to simple_mmio
>  - converted to syscon/regmap
>  - removed unimplemented .remove function
>  - dropped DTS changes
>  - defered gpio ranges to DT
>  - fixed warning
>  - properly set soc->nmodes
>  -- rmk]
> Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
>
> [ add missing MPP[61:56] function 14 (SDIO)
> -- Konstantin Porotchkin]
> Signed-off-by: Konstantin Porotchkin <kostap@...vell.com>
>
> [ allow to properly register more then one instance of this driver
> -- Grzegorz Jaszczyk]
> Signed-off-by: Grzegorz Jaszczyk <jaz@...ihalf.com>
>
> [ - rebased on 4.12-rc1
>   - fixed the 80 character limit for mvebu_mpp_mode array
>   - aligned the compatible name on the ones already used
>   - fixed the MPP table for CP110: some MPP are not available on Armada 7K
> -- Gregory CLEMENT]
> Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
> ---
>  drivers/pinctrl/mvebu/Kconfig                |   4 +-
>  drivers/pinctrl/mvebu/Makefile               |   1 +-
>  drivers/pinctrl/mvebu/pinctrl-armada-cp110.c | 692 ++++++++++++++++++++-
>  3 files changed, 697 insertions(+)
>  create mode 100644 drivers/pinctrl/mvebu/pinctrl-armada-cp110.c
>
> diff --git a/drivers/pinctrl/mvebu/Kconfig b/drivers/pinctrl/mvebu/Kconfig
> index 0e0b009f2b71..d9773b77ff9f 100644
> --- a/drivers/pinctrl/mvebu/Kconfig
> +++ b/drivers/pinctrl/mvebu/Kconfig
> @@ -32,6 +32,10 @@ config PINCTRL_ARMADA_AP806
>         bool
>         select PINCTRL_MVEBU
>
> +config PINCTRL_ARMADA_CP110
> +       bool
> +       select PINCTRL_MVEBU

Same comment for this driver; if we'd not add new instances of
non-modular code using the modular functions/macros, it would
be greatly appreciated.

Thanks,
Paul.
--

> +
>  config PINCTRL_ARMADA_XP
>         bool
>         select PINCTRL_MVEBU
> diff --git a/drivers/pinctrl/mvebu/Makefile b/drivers/pinctrl/mvebu/Makefile
> index 455db274b53d..5b03fd55e28d 100644
> --- a/drivers/pinctrl/mvebu/Makefile
> +++ b/drivers/pinctrl/mvebu/Makefile
> @@ -6,6 +6,7 @@ obj-$(CONFIG_PINCTRL_ARMADA_375) += pinctrl-armada-375.o
>  obj-$(CONFIG_PINCTRL_ARMADA_38X) += pinctrl-armada-38x.o
>  obj-$(CONFIG_PINCTRL_ARMADA_39X) += pinctrl-armada-39x.o
>  obj-$(CONFIG_PINCTRL_ARMADA_AP806) += pinctrl-armada-ap806.o
> +obj-$(CONFIG_PINCTRL_ARMADA_CP110) += pinctrl-armada-cp110.o
>  obj-$(CONFIG_PINCTRL_ARMADA_XP)  += pinctrl-armada-xp.o
>  obj-$(CONFIG_PINCTRL_ARMADA_37XX)  += pinctrl-armada-37xx.o
>  obj-$(CONFIG_PINCTRL_ORION)  += pinctrl-orion.o
> diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-cp110.c b/drivers/pinctrl/mvebu/pinctrl-armada-cp110.c
> new file mode 100644
> index 000000000000..f835f9262829
> --- /dev/null
> +++ b/drivers/pinctrl/mvebu/pinctrl-armada-cp110.c
> @@ -0,0 +1,692 @@
> +/*
> + * Marvell Armada CP110 pinctrl driver based on mvebu pinctrl core
> + *
> + * Copyright (C) 2017 Marvell
> + *
> + * Hanna Hawa <hannah@...vell.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/io.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>

 [...]

> +
> +module_platform_driver(armada_cp110_pinctrl_driver);
> +
> +MODULE_AUTHOR("Hanna Hawa <hannah@...vell.com>");
> +MODULE_DESCRIPTION("Marvell Armada CP110 pinctrl driver");
> +MODULE_LICENSE("GPL v2");
> --
> git-series 0.9.1