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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Wed, 8 Aug 2018 20:55:18 +0300
Message-ID: <CAHp75VeUWbJ37SV+V4X-6dxUvL3H0Kt9+HY7=5xBYujnZ37z2w@mail.gmail.com>
Subject: Re: [PATCH 20/28] ARM: davinci: da830-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-da830-evm.c | 13 +++++--------
>  1 file changed, 5 insertions(+), 8 deletions(-)
>
> diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
> index 4a2fe8142a2f..08a23e777eca 100644
> --- a/arch/arm/mach-davinci/board-da830-evm.c
> +++ b/arch/arm/mach-davinci/board-da830-evm.c
> @@ -18,7 +18,7 @@
>  #include <linux/platform_device.h>
>  #include <linux/i2c.h>
>  #include <linux/platform_data/pcf857x.h>
> -#include <linux/platform_data/at24.h>
> +#include <linux/property.h>
>  #include <linux/mtd/mtd.h>
>  #include <linux/mtd/partitions.h>
>  #include <linux/spi/spi.h>
> @@ -419,12 +419,9 @@ static struct nvmem_cell_lookup da830_evm_mac_address_cell = {
>         .nvmem_name = "1-00500",
>  };
>
> -static struct at24_platform_data da830_evm_i2c_eeprom_info = {
> -       .byte_len       = SZ_256K / 8,
> -       .page_size      = 64,
> -       .flags          = AT24_FLAG_ADDR16,
> -       .setup          = davinci_get_mac_addr,
> -       .context        = (void *)0x7f00,
> +static const struct property_entry da830_evm_i2c_eeprom_properties[] = {
> +       PROPERTY_ENTRY_U32("pagesize", 64),
> +       { }
>  };
>
>  static int __init da830_evm_ui_expander_setup(struct i2c_client *client,
> @@ -458,7 +455,7 @@ static struct pcf857x_platform_data __initdata da830_evm_ui_expander_info = {
>  static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
>         {
>                 I2C_BOARD_INFO("24c256", 0x50),
> -               .platform_data  = &da830_evm_i2c_eeprom_info,
> +               .properties = da830_evm_i2c_eeprom_properties,
>         },
>         {
>                 I2C_BOARD_INFO("tlv320aic3x", 0x18),
> --
> 2.18.0
>


-- 
With Best Regards,
Andy Shevchenko