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[PATCH 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug

Jameson Thies posted 4 patches 1 year, 11 months ago
There is a newer version of this series
[PATCH 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug
Posted by Jameson Thies 1 year, 11 months ago 
Register SOP' alternate modes with a Type-C Connector Class cable plug.
Alternate modes are queried from the PPM using the GET_ALTERNATE_MODES
command with recipient set to SOP'.

Signed-off-by: Jameson Thies <jthies@google.com>
---
Tested on v6.6 kernel. SOP' GET_ALTERNATE_MODE responses from the PPM
are correctly registered as to the cable plug.
redrix-rev3 /sys/class/typec # ls port2-cable/port2-plug0/
device  port2-plug0.0  port2-plug0.1  power  subsystem  uevent

 drivers/usb/typec/ucsi/ucsi.c | 60 +++++++++++++++++++++++++++++++++++
 drivers/usb/typec/ucsi/ucsi.h |  2 ++
 2 files changed, 62 insertions(+)

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index 6d6443e61faa..9b541547917b 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -399,6 +399,27 @@ static int ucsi_register_altmode(struct ucsi_connector *con,
 
 		con->partner_altmode[i] = alt;
 		break;
+	case UCSI_RECIPIENT_SOP_P:
+		i = ucsi_next_altmode(con->plug_altmode);
+		if (i < 0) {
+			ret = i;
+			goto err;
+		}
+
+		ret = ucsi_altmode_next_mode(con->plug_altmode, desc->svid);
+		if (ret < 0)
+			return ret;
+
+		desc->mode = ret;
+
+		alt = typec_plug_register_altmode(con->plug, desc);
+		if (IS_ERR(alt)) {
+			ret = PTR_ERR(alt);
+			goto err;
+		}
+
+		con->plug_altmode[i] = alt;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -566,6 +587,9 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient)
 	case UCSI_RECIPIENT_SOP:
 		adev = con->partner_altmode;
 		break;
+	case UCSI_RECIPIENT_SOP_P:
+		adev = con->plug_altmode;
+		break;
 	default:
 		return;
 	}
@@ -801,6 +825,33 @@ static void ucsi_unregister_partner_pdos(struct ucsi_connector *con)
 	con->partner_pd = NULL;
 }
 
+static int ucsi_register_plug(struct ucsi_connector *con)
+{
+	struct typec_plug *plug;
+	struct typec_plug_desc desc = {.index = TYPEC_PLUG_SOP_P};
+
+	plug = typec_register_plug(con->cable, &desc);
+	if (IS_ERR(plug)) {
+		dev_err(con->ucsi->dev,
+			"con%d: failed to register plug (%ld)\n", con->num,
+			PTR_ERR(plug));
+		return PTR_ERR(plug);
+	}
+
+	con->plug = plug;
+	return 0;
+}
+
+static void ucsi_unregister_plug(struct ucsi_connector *con)
+{
+	if (!con->plug)
+		return;
+
+	ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP_P);
+	typec_unregister_plug(con->plug);
+	con->plug = NULL;
+}
+
 static int ucsi_register_cable(struct ucsi_connector *con)
 {
 	struct typec_cable *cable;
@@ -842,6 +893,7 @@ static void ucsi_unregister_cable(struct ucsi_connector *con)
 	if (!con->cable)
 		return;
 
+	ucsi_unregister_plug(con);
 	typec_unregister_cable(con->cable);
 	con->cable = NULL;
 	memset(&con->cable_identity, 0, sizeof(con->cable_identity));
@@ -1046,6 +1098,14 @@ static int ucsi_check_cable(struct ucsi_connector *con)
 	if (ret < 0)
 		return ret;
 
+	ret = ucsi_register_plug(con);
+	if (ret < 0)
+		return ret;
+
+	ret = ucsi_register_altmodes(con, UCSI_RECIPIENT_SOP_P);
+	if (ret < 0)
+		return ret;
+
 	return 0;
 }
 
diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
index b89fae82e8ce..32daf5f58650 100644
--- a/drivers/usb/typec/ucsi/ucsi.h
+++ b/drivers/usb/typec/ucsi/ucsi.h
@@ -429,9 +429,11 @@ struct ucsi_connector {
 	struct typec_port *port;
 	struct typec_partner *partner;
 	struct typec_cable *cable;
+	struct typec_plug *plug;
 
 	struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES];
 	struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES];
+	struct typec_altmode *plug_altmode[UCSI_MAX_ALTMODES];
 
 	struct typec_capability typec_cap;
 
-- 
2.44.0.rc0.258.g7320e95886-goog
Re: [PATCH 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug
Posted by Heikki Krogerus 1 year, 11 months ago 
On Fri, Feb 23, 2024 at 01:03:28AM +0000, Jameson Thies wrote:
> Register SOP' alternate modes with a Type-C Connector Class cable plug.
> Alternate modes are queried from the PPM using the GET_ALTERNATE_MODES
> command with recipient set to SOP'.
> 
> Signed-off-by: Jameson Thies <jthies@google.com>

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>

> ---
> Tested on v6.6 kernel. SOP' GET_ALTERNATE_MODE responses from the PPM
> are correctly registered as to the cable plug.
> redrix-rev3 /sys/class/typec # ls port2-cable/port2-plug0/
> device  port2-plug0.0  port2-plug0.1  power  subsystem  uevent
> 
>  drivers/usb/typec/ucsi/ucsi.c | 60 +++++++++++++++++++++++++++++++++++
>  drivers/usb/typec/ucsi/ucsi.h |  2 ++
>  2 files changed, 62 insertions(+)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
> index 6d6443e61faa..9b541547917b 100644
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@ -399,6 +399,27 @@ static int ucsi_register_altmode(struct ucsi_connector *con,
>  
>  		con->partner_altmode[i] = alt;
>  		break;
> +	case UCSI_RECIPIENT_SOP_P:
> +		i = ucsi_next_altmode(con->plug_altmode);
> +		if (i < 0) {
> +			ret = i;
> +			goto err;
> +		}
> +
> +		ret = ucsi_altmode_next_mode(con->plug_altmode, desc->svid);
> +		if (ret < 0)
> +			return ret;
> +
> +		desc->mode = ret;
> +
> +		alt = typec_plug_register_altmode(con->plug, desc);
> +		if (IS_ERR(alt)) {
> +			ret = PTR_ERR(alt);
> +			goto err;
> +		}
> +
> +		con->plug_altmode[i] = alt;
> +		break;
>  	default:
>  		return -EINVAL;
>  	}
> @@ -566,6 +587,9 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient)
>  	case UCSI_RECIPIENT_SOP:
>  		adev = con->partner_altmode;
>  		break;
> +	case UCSI_RECIPIENT_SOP_P:
> +		adev = con->plug_altmode;
> +		break;
>  	default:
>  		return;
>  	}
> @@ -801,6 +825,33 @@ static void ucsi_unregister_partner_pdos(struct ucsi_connector *con)
>  	con->partner_pd = NULL;
>  }
>  
> +static int ucsi_register_plug(struct ucsi_connector *con)
> +{
> +	struct typec_plug *plug;
> +	struct typec_plug_desc desc = {.index = TYPEC_PLUG_SOP_P};
> +
> +	plug = typec_register_plug(con->cable, &desc);
> +	if (IS_ERR(plug)) {
> +		dev_err(con->ucsi->dev,
> +			"con%d: failed to register plug (%ld)\n", con->num,
> +			PTR_ERR(plug));
> +		return PTR_ERR(plug);
> +	}
> +
> +	con->plug = plug;
> +	return 0;
> +}
> +
> +static void ucsi_unregister_plug(struct ucsi_connector *con)
> +{
> +	if (!con->plug)
> +		return;
> +
> +	ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP_P);
> +	typec_unregister_plug(con->plug);
> +	con->plug = NULL;
> +}
> +
>  static int ucsi_register_cable(struct ucsi_connector *con)
>  {
>  	struct typec_cable *cable;
> @@ -842,6 +893,7 @@ static void ucsi_unregister_cable(struct ucsi_connector *con)
>  	if (!con->cable)
>  		return;
>  
> +	ucsi_unregister_plug(con);
>  	typec_unregister_cable(con->cable);
>  	con->cable = NULL;
>  	memset(&con->cable_identity, 0, sizeof(con->cable_identity));
> @@ -1046,6 +1098,14 @@ static int ucsi_check_cable(struct ucsi_connector *con)
>  	if (ret < 0)
>  		return ret;
>  
> +	ret = ucsi_register_plug(con);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = ucsi_register_altmodes(con, UCSI_RECIPIENT_SOP_P);
> +	if (ret < 0)
> +		return ret;
> +
>  	return 0;
>  }
>  
> diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
> index b89fae82e8ce..32daf5f58650 100644
> --- a/drivers/usb/typec/ucsi/ucsi.h
> +++ b/drivers/usb/typec/ucsi/ucsi.h
> @@ -429,9 +429,11 @@ struct ucsi_connector {
>  	struct typec_port *port;
>  	struct typec_partner *partner;
>  	struct typec_cable *cable;
> +	struct typec_plug *plug;
>  
>  	struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES];
>  	struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES];
> +	struct typec_altmode *plug_altmode[UCSI_MAX_ALTMODES];
>  
>  	struct typec_capability typec_cap;
>  
> -- 
> 2.44.0.rc0.258.g7320e95886-goog

-- 
heikki
Re: [PATCH 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug
Posted by Jameson Thies 1 year, 11 months ago 
> Is there a plan to do the same for the SOP Double Prime for advanced active
> cables with two plugs?

Hey Benson, I am not currently planning to add support for SOP double
prime discovery. I currently don't see how information about the second
plug would impact mode entry decisions. But, we could always follow up
and add that if we find a reason to.
Re: [PATCH 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug
Posted by Prashant Malani 1 year, 11 months ago 
On Thu, Feb 22, 2024 at 5:05 PM Jameson Thies <jthies@google.com> wrote:
>
> Register SOP' alternate modes with a Type-C Connector Class cable plug.
> Alternate modes are queried from the PPM using the GET_ALTERNATE_MODES
> command with recipient set to SOP'.
>
> Signed-off-by: Jameson Thies <jthies@google.com>
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Re: [PATCH 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug
Posted by Benson Leung 1 year, 11 months ago 
Hi Jameson,

On Fri, Feb 23, 2024 at 01:03:28AM +0000, Jameson Thies wrote:
> Register SOP' alternate modes with a Type-C Connector Class cable plug.
> Alternate modes are queried from the PPM using the GET_ALTERNATE_MODES
> command with recipient set to SOP'.
> 

Is there a plan to do the same for the SOP Double Prime for advanced active
cables with two plugs?

> Signed-off-by: Jameson Thies <jthies@google.com>

Other than that question,

Reviewed-by: Benson Leung <bleung@chromium.org>

> ---
> Tested on v6.6 kernel. SOP' GET_ALTERNATE_MODE responses from the PPM
> are correctly registered as to the cable plug.
> redrix-rev3 /sys/class/typec # ls port2-cable/port2-plug0/
> device  port2-plug0.0  port2-plug0.1  power  subsystem  uevent
> 
>  drivers/usb/typec/ucsi/ucsi.c | 60 +++++++++++++++++++++++++++++++++++
>  drivers/usb/typec/ucsi/ucsi.h |  2 ++
>  2 files changed, 62 insertions(+)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
> index 6d6443e61faa..9b541547917b 100644
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@ -399,6 +399,27 @@ static int ucsi_register_altmode(struct ucsi_connector *con,
>  
>  		con->partner_altmode[i] = alt;
>  		break;
> +	case UCSI_RECIPIENT_SOP_P:
> +		i = ucsi_next_altmode(con->plug_altmode);
> +		if (i < 0) {
> +			ret = i;
> +			goto err;
> +		}
> +
> +		ret = ucsi_altmode_next_mode(con->plug_altmode, desc->svid);
> +		if (ret < 0)
> +			return ret;
> +
> +		desc->mode = ret;
> +
> +		alt = typec_plug_register_altmode(con->plug, desc);
> +		if (IS_ERR(alt)) {
> +			ret = PTR_ERR(alt);
> +			goto err;
> +		}
> +
> +		con->plug_altmode[i] = alt;
> +		break;
>  	default:
>  		return -EINVAL;
>  	}
> @@ -566,6 +587,9 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient)
>  	case UCSI_RECIPIENT_SOP:
>  		adev = con->partner_altmode;
>  		break;
> +	case UCSI_RECIPIENT_SOP_P:
> +		adev = con->plug_altmode;
> +		break;
>  	default:
>  		return;
>  	}
> @@ -801,6 +825,33 @@ static void ucsi_unregister_partner_pdos(struct ucsi_connector *con)
>  	con->partner_pd = NULL;
>  }
>  
> +static int ucsi_register_plug(struct ucsi_connector *con)
> +{
> +	struct typec_plug *plug;
> +	struct typec_plug_desc desc = {.index = TYPEC_PLUG_SOP_P};
> +
> +	plug = typec_register_plug(con->cable, &desc);
> +	if (IS_ERR(plug)) {
> +		dev_err(con->ucsi->dev,
> +			"con%d: failed to register plug (%ld)\n", con->num,
> +			PTR_ERR(plug));
> +		return PTR_ERR(plug);
> +	}
> +
> +	con->plug = plug;
> +	return 0;
> +}
> +
> +static void ucsi_unregister_plug(struct ucsi_connector *con)
> +{
> +	if (!con->plug)
> +		return;
> +
> +	ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP_P);
> +	typec_unregister_plug(con->plug);
> +	con->plug = NULL;
> +}
> +
>  static int ucsi_register_cable(struct ucsi_connector *con)
>  {
>  	struct typec_cable *cable;
> @@ -842,6 +893,7 @@ static void ucsi_unregister_cable(struct ucsi_connector *con)
>  	if (!con->cable)
>  		return;
>  
> +	ucsi_unregister_plug(con);
>  	typec_unregister_cable(con->cable);
>  	con->cable = NULL;
>  	memset(&con->cable_identity, 0, sizeof(con->cable_identity));
> @@ -1046,6 +1098,14 @@ static int ucsi_check_cable(struct ucsi_connector *con)
>  	if (ret < 0)
>  		return ret;
>  
> +	ret = ucsi_register_plug(con);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = ucsi_register_altmodes(con, UCSI_RECIPIENT_SOP_P);
> +	if (ret < 0)
> +		return ret;
> +
>  	return 0;
>  }
>  
> diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
> index b89fae82e8ce..32daf5f58650 100644
> --- a/drivers/usb/typec/ucsi/ucsi.h
> +++ b/drivers/usb/typec/ucsi/ucsi.h
> @@ -429,9 +429,11 @@ struct ucsi_connector {
>  	struct typec_port *port;
>  	struct typec_partner *partner;
>  	struct typec_cable *cable;
> +	struct typec_plug *plug;
>  
>  	struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES];
>  	struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES];
> +	struct typec_altmode *plug_altmode[UCSI_MAX_ALTMODES];
>  
>  	struct typec_capability typec_cap;
>  
> -- 
> 2.44.0.rc0.258.g7320e95886-goog
>

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