[PATCH v2 05/19] i2c: designware_i2c: Use an enum for selected speed mode

[pt]

Reviewed-by: Jun Chen <ptchentw at gmail.com>

Simon Glass <sjg at chromium.org> 於 2020年1月4日 週六 上午6:27寫道：

> Group these #defines into an enum to make it easier to understand the
> relationship between them.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v2: None
>
>  drivers/i2c/designware_i2c.c |  2 +-
>  drivers/i2c/designware_i2c.h | 10 +++++++---
>  2 files changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c
> index dd1cc0b823..2416ef32f9 100644
> --- a/drivers/i2c/designware_i2c.c
> +++ b/drivers/i2c/designware_i2c.c
> @@ -57,10 +57,10 @@ static unsigned int __dw_i2c_set_bus_speed(struct
> i2c_regs *i2c_base,
>                                            unsigned int speed,
>                                            unsigned int bus_mhz)
>  {
> +       enum i2c_speed_mode i2c_spd;
>         unsigned int cntl;
>         unsigned int hcnt, lcnt;
>         unsigned int ena;
> -       int i2c_spd;
>
>         /* Allow high speed if there is no config, or the config allows it
> */
>         if (speed >= I2C_HIGH_SPEED &&
> diff --git a/drivers/i2c/designware_i2c.h b/drivers/i2c/designware_i2c.h
> index fcb7dde83a..06d794ca64 100644
> --- a/drivers/i2c/designware_i2c.h
> +++ b/drivers/i2c/designware_i2c.h
> @@ -135,9 +135,13 @@ struct i2c_regs {
>  #define IC_STATUS_ACT          0x0001
>
>  /* Speed Selection */
> -#define IC_SPEED_MODE_STANDARD 1
> -#define IC_SPEED_MODE_FAST     2
> -#define IC_SPEED_MODE_HIGH     3
> +enum i2c_speed_mode {
> +       IC_SPEED_MODE_STANDARD,
> +       IC_SPEED_MODE_FAST,
> +       IC_SPEED_MODE_HIGH,
> +
> +       IC_SPEED_MODE_COUNT,
> +};
>
>  #define I2C_HIGH_SPEED         3400000
>  #define I2C_FAST_SPEED         400000
> --
> 2.24.1.735.g03f4e72817-goog
>
>