On 17.05.2015 21:03, Vladimir Zapolskiy wrote:
> The change adds support of internal HDMI I2C master controller, this
> subdevice is used by default, if "ddc-i2c-bus" DT property is omitted.
>
> The main purpose of this functionality is to support reading EDID from
> an HDMI monitor on boards, which don't have an I2C bus connected to
> DDC pins.
>
> Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/dw_hdmi.c | 332 ++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 326 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
> index 49cafb6..2a52449 100644
> --- a/drivers/gpu/drm/bridge/dw_hdmi.c
> +++ b/drivers/gpu/drm/bridge/dw_hdmi.c
[snip]
> + ret = i2c_add_adapter(adap);
> + if (ret) {
> + dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
> + devm_kfree(hdmi->i2c);
Immediately found a compilation problem in last minute update, I'll
resend the change, sorry.
> + hdmi->i2c = NULL;
> + return ERR_PTR(ret);
> + }
> +
--
With best wishes,
Vladimir
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