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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Wed, 8 Aug 2018 20:56:11 +0300
Message-ID: <CAHp75VeGFr9e-pNeoo7HdvnGLud49wwKvFhFotFyQnwCh0d0iA@mail.gmail.com>
Subject: Re: [PATCH 22/28] ARM: davinci: dm646x-evm: use device properties for
 at24 eeprom
To:     Bartosz Golaszewski <brgl@bgdev.pl>
Cc:     Jonathan Corbet <corbet@lwn.net>, Sekhar Nori <nsekhar@ti.com>,
        Kevin Hilman <khilman@kernel.org>,
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On Wed, Aug 8, 2018 at 6:31 PM, Bartosz Golaszewski <brgl@bgdev.pl> wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.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@gmail.com>

> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
>  arch/arm/mach-davinci/board-dm646x-evm.c | 13 +++++--------
>  1 file changed, 5 insertions(+), 8 deletions(-)
>
> diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
> index 5a9de47bc8a2..5049f0c6cd1a 100644
> --- a/arch/arm/mach-davinci/board-dm646x-evm.c
> +++ b/arch/arm/mach-davinci/board-dm646x-evm.c
> @@ -22,7 +22,7 @@
>  #include <linux/gpio.h>
>  #include <linux/platform_device.h>
>  #include <linux/i2c.h>
> -#include <linux/platform_data/at24.h>
> +#include <linux/property.h>
>  #include <linux/platform_data/pcf857x.h>
>
>  #include <media/i2c/tvp514x.h>
> @@ -320,12 +320,9 @@ static struct nvmem_cell_lookup dm646x_evm_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),
> +       { }
>  };
>  #endif
>
> @@ -396,7 +393,7 @@ static void evm_init_cpld(void)
>  static struct i2c_board_info __initdata i2c_info[] =  {
>         {
>                 I2C_BOARD_INFO("24c256", 0x50),
> -               .platform_data  = &eeprom_info,
> +               .properties  = eeprom_properties,
>         },
>         {
>                 I2C_BOARD_INFO("pcf8574a", 0x38),
> --
> 2.18.0
>


-- 
With Best Regards,
Andy Shevchenko