[U-Boot] [PATCH v3 1/2] eeprom: fix DM_I2C support without CONFIG_SYS_I2C_EEPROM_BUS

[Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>]

Am 23.04.2019 um 21:18 schrieb Simon Goldschmidt:
> The current device model enabled eeprom code only works if
> CONFIG_SYS_I2C_EEPROM_BUS is set.
> 
> This patch makes it work without that define so that the bus
> number passed to 'eeprom_init' is used.
> 
> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
> Reviewed-by: Heiko Schocher <hs@denx.de>

Please ignore this version, I've sent a diff for this fix instead.

Regards,
Simon

> ---
> 
> Changes in v3:
> - use eeprom_init() to set CONFIG_SYS_I2C_EEPROM_BUS, not
>    i2c_set_bus_num to make things work with CONFIG_DM_I2C
> 
> Changes in v2: None
> 
>   cmd/eeprom.c | 23 +++++++++++++++--------
>   1 file changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/cmd/eeprom.c b/cmd/eeprom.c
> index 6c29b33ba3..7b1f81477f 100644
> --- a/cmd/eeprom.c
> +++ b/cmd/eeprom.c
> @@ -59,6 +59,10 @@
>   #endif
>   #endif
>   
> +#if defined(CONFIG_DM_I2C)
> +int eeprom_i2c_bus;
> +#endif
> +
>   __weak int eeprom_write_enable(unsigned dev_addr, int state)
>   {
>   	return 0;
> @@ -67,7 +71,9 @@ __weak int eeprom_write_enable(unsigned dev_addr, int state)
>   void eeprom_init(int bus)
>   {
>   	/* I2C EEPROM */
> -#if defined(CONFIG_SYS_I2C)
> +#if defined(CONFIG_DM_I2C)
> +	eeprom_i2c_bus = bus;
> +#elif defined(CONFIG_SYS_I2C)
>   	if (bus >= 0)
>   		i2c_set_bus_num(bus);
>   	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
> @@ -124,14 +130,14 @@ static int eeprom_rw_block(unsigned offset, uchar *addr, unsigned alen,
>   {
>   	int ret = 0;
>   
> -#if defined(CONFIG_DM_I2C) && defined(CONFIG_SYS_I2C_EEPROM_BUS)
> +#if defined(CONFIG_DM_I2C)
>   	struct udevice *dev;
>   
> -	ret = i2c_get_chip_for_busnum(CONFIG_SYS_I2C_EEPROM_BUS, addr[0],
> +	ret = i2c_get_chip_for_busnum(eeprom_i2c_bus, addr[0],
>   				      alen - 1, &dev);
>   	if (ret) {
>   		printf("%s: Cannot find udev for a bus %d\n", __func__,
> -		       CONFIG_SYS_I2C_EEPROM_BUS);
> +		       eeprom_i2c_bus);
>   		return CMD_RET_FAILURE;
>   	}
>   
> @@ -141,15 +147,12 @@ static int eeprom_rw_block(unsigned offset, uchar *addr, unsigned alen,
>   		ret = dm_i2c_write(dev, offset, buffer, len);
>   
>   #else /* Non DM I2C support - will be removed */
> -#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
> -	i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
> -#endif
>   
>   	if (read)
>   		ret = i2c_read(addr[0], offset, alen - 1, buffer, len);
>   	else
>   		ret = i2c_write(addr[0], offset, alen - 1, buffer, len);
> -#endif /* CONFIG_DM_I2C && CONFIG_SYS_I2C_EEPROM_BUS */
> +#endif /* CONFIG_DM_I2C */
>   	if (ret)
>   		ret = CMD_RET_FAILURE;
>   
> @@ -164,6 +167,10 @@ static int eeprom_rw(unsigned dev_addr, unsigned offset, uchar *buffer,
>   	int rcode = 0;
>   	uchar addr[3];
>   
> +#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
> +	eeprom_init(CONFIG_SYS_I2C_EEPROM_BUS);
> +#endif
> +
>   	while (offset < end) {
>   		alen = eeprom_addr(dev_addr, offset, addr);
>   
>