Doug Anderson wrote:
>
> From: Padmavathi Venna <padma.v@xxxxxxxxxxx>
>
> Get the i2c bus number that the device is connected to using the alias
> id. This makes debugging / grokking of kernel messages much easier.
>
> [dianders: slight patch cleanup from Padmavathi's original.]
>
> Signed-off-by: Padmavathi Venna <padma.v@xxxxxxxxxxx>
> Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>
Acked-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
> ---
> drivers/i2c/busses/i2c-s3c2410.c | 10 +++++++++-
> 1 files changed, 9 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-
> s3c2410.c
> index 3e0335f..ca43590 100644
> --- a/drivers/i2c/busses/i2c-s3c2410.c
> +++ b/drivers/i2c/busses/i2c-s3c2410.c
> @@ -899,11 +899,19 @@ static void
> s3c24xx_i2c_parse_dt(struct device_node *np, struct s3c24xx_i2c *i2c)
> {
> struct s3c2410_platform_i2c *pdata = i2c->pdata;
> + int id;
>
> if (!np)
> return;
>
> - pdata->bus_num = -1; /* i2c bus number is dynamically assigned */
> + id = of_alias_get_id(np, "i2c");
> + if (id < 0) {
> + dev_warn(i2c->dev, "failed to get alias id:%d\n", id);
> + pdata->bus_num = -1;
> + } else {
> + /* i2c bus number is statically assigned from alias */
> + pdata->bus_num = id;
> + }
> of_property_read_u32(np, "samsung,i2c-sda-delay", &pdata-
> >sda_delay);
> of_property_read_u32(np, "samsung,i2c-slave-addr", &pdata-
> >slave_addr);
> of_property_read_u32(np, "samsung,i2c-max-bus-freq",
> --
> 1.7.7.3
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