linux-kernel - Re: [PATCH 21/28] ARM: davinci: dm644x-evm: use device properties for at24 eeprom

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Message-ID: <CAHp75VewdvD2D2BpyKAptFecr+hrW5O5YUcSzu9X4wGgV-oJ3A@mail.gmail.com>
Date:   Wed, 8 Aug 2018 20:55:46 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Jonathan Corbet <corbet@....net>, Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Grygorii Strashko <grygorii.strashko@...com>,
        "David S . Miller" <davem@...emloft.net>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Naren <naren.kernel@...il.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Lukas Wunner <lukas@...ner.de>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>,
        Sven Van Asbroeck <svendev@...x.com>,
        Paolo Abeni <pabeni@...hat.com>, Alban Bedel <albeu@...e.fr>,
        Rob Herring <robh@...nel.org>,
        David Lechner <david@...hnology.com>,
        Andrew Lunn <andrew@...n.ch>,
        Linux Documentation List <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        "open list:MEMORY TECHNOLOGY..." <linux-mtd@...ts.infradead.org>,
        Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 21/28] ARM: davinci: dm644x-evm: use device properties for
 at24 eeprom

On Wed, Aug 8, 2018 at 6:31 PM, Bartosz Golaszewski <brgl@...ev.pl> wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
>
> We want to work towards phasing out the at24_platform_data structure.
> There are few users and its contents can be represented using generic
> device properties. Using device properties only will allow us to
> significantly simplify the at24 configuration code.
>
> Remove the at24_platform_data structure and replace it with an array
> of property entries. Drop the byte_len/size property, as the model name
> already implies the EEPROM's size.
>

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
>  arch/arm/mach-davinci/board-dm644x-evm.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
> index 6d35c6e1b0bd..abfcf42da6fb 100644
> --- a/arch/arm/mach-davinci/board-dm644x-evm.c
> +++ b/arch/arm/mach-davinci/board-dm644x-evm.c
> @@ -16,8 +16,8 @@
>  #include <linux/gpio/machine.h>
>  #include <linux/i2c.h>
>  #include <linux/platform_data/pcf857x.h>
> -#include <linux/platform_data/at24.h>
>  #include <linux/platform_data/gpio-davinci.h>
> +#include <linux/property.h>
>  #include <linux/mtd/mtd.h>
>  #include <linux/mtd/rawnand.h>
>  #include <linux/mtd/partitions.h>
> @@ -486,12 +486,8 @@ static struct nvmem_cell_lookup dm6446evm_mac_address_cell = {
>         .nvmem_name = "1-00500",
>  };
>
> -static struct at24_platform_data eeprom_info = {
> -       .byte_len       = (256*1024) / 8,
> -       .page_size      = 64,
> -       .flags          = AT24_FLAG_ADDR16,
> -       .setup          = davinci_get_mac_addr,
> -       .context        = (void *)0x7f00,
> +static const struct property_entry eeprom_properties[] = {
> +       PROPERTY_ENTRY_U32("pagesize", 64),
>  };
>
>  /*
> @@ -601,7 +597,7 @@ static struct i2c_board_info __initdata i2c_info[] =  {
>         },
>         {
>                 I2C_BOARD_INFO("24c256", 0x50),
> -               .platform_data  = &eeprom_info,
> +               .properties = eeprom_properties,
>         },
>         {
>                 I2C_BOARD_INFO("tlv320aic33", 0x1b),
> --
> 2.18.0
>
> --
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-- 
With Best Regards,
Andy Shevchenko