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Message-ID: <Y8AKEZzbxyYaYjg1@kuha.fi.intel.com>
Date: Thu, 12 Jan 2023 15:24:33 +0200
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Prashant Malani <pmalani@...omium.org>
Cc: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
bleung@...omium.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Guillaume Ranquet <granquet@...libre.com>,
Macpaul Lin <macpaul.lin@...iatek.com>,
Pablo Sun <pablo.sun@...iatek.com>
Subject: Re: [PATCH 3/3] usb: typec: altmodes/displayport: Use proper macro
for pin assignment check
On Wed, Jan 11, 2023 at 02:05:43AM +0000, Prashant Malani wrote:
> While looking at the DP configuration VDO to determine the peripheral
> configuration, the spec (Table 8-5: DisplayPort Configurations, VESA
> DisplayPort Alt Mode Standard v2.0) lists the options as "UFP_U as a DP
> Source/Sink Device".
>
> So, use the correct macro while performing this check. Effectively it's
> the same as the existing code, but the proposed macro describes the
> state a little better.
>
> No functional changes introduced.
>
> Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> Signed-off-by: Prashant Malani <pmalani@...omium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> ---
> drivers/usb/typec/altmodes/displayport.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
> index c0d65c93cefe..746bfbf3d557 100644
> --- a/drivers/usb/typec/altmodes/displayport.c
> +++ b/drivers/usb/typec/altmodes/displayport.c
> @@ -426,7 +426,7 @@ static const char * const pin_assignments[] = {
> */
> static u8 get_current_pin_assignments(struct dp_altmode *dp)
> {
> - if (DP_CONF_CURRENTLY(dp->data.conf) == DP_CONF_DFP_D)
> + if (DP_CONF_CURRENTLY(dp->data.conf) == DP_CONF_UFP_U_AS_DFP_D)
> return DP_CAP_PIN_ASSIGN_DFP_D(dp->alt->vdo);
> else
> return DP_CAP_PIN_ASSIGN_UFP_D(dp->alt->vdo);
> --
> 2.39.0.314.g84b9a713c41-goog
--
heikki
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