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From: Badhri Jagan Sridharan <badhri@google.com>
To: Guenter Roeck <linux@roeck-us.net>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rob Herring <robh+dt@kernel.org>,
	Lee Jones <lee.jones@linaro.org>, Mark Brown <broonie@kernel.org>,
	Maxime Ripard <mripard@kernel.org>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Thierry Reding <treding@nvidia.com>,
	Prashant Malani <pmalani@chromium.org>,
	Badhri Jagan Sridharan <badhri@google.com>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org
Subject: [PATCH v11 06/10] usb: typec: tcpci: frs sourcing vbus callback
Date: Tue, 20 Oct 2020 02:36:23 -0700	[thread overview]
Message-ID: <20201020093627.256885-7-badhri@google.com> (raw)
In-Reply-To: <20201020093627.256885-1-badhri@google.com>

During FRS hardware autonomously starts to source vbus. Provide
callback to perform chip specific operations.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
v9 is the first version of this patch in the series. Added to fix
occasional bug of vbus turning back on when disconnecting the FRS accessory
after disconnect. No changes since v9.

Changes since v10:
Added Reviewed-by: Heikki Krogerus
---
 drivers/usb/typec/tcpm/tcpci.c | 9 +++++++++
 drivers/usb/typec/tcpm/tcpci.h | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index f9f0af64da5f..f91688e43991 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -284,6 +284,14 @@ static int tcpci_enable_frs(struct tcpc_dev *dev, bool enable)
 	return ret;
 }
 
+static void tcpci_frs_sourcing_vbus(struct tcpc_dev *dev)
+{
+	struct tcpci *tcpci = tcpc_to_tcpci(dev);
+
+	if (tcpci->data->frs_sourcing_vbus)
+		tcpci->data->frs_sourcing_vbus(tcpci, tcpci->data);
+}
+
 static int tcpci_set_bist_data(struct tcpc_dev *tcpc, bool enable)
 {
 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
@@ -628,6 +636,7 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data)
 	tcpci->tcpc.pd_transmit = tcpci_pd_transmit;
 	tcpci->tcpc.set_bist_data = tcpci_set_bist_data;
 	tcpci->tcpc.enable_frs = tcpci_enable_frs;
+	tcpci->tcpc.frs_sourcing_vbus = tcpci_frs_sourcing_vbus;
 
 	err = tcpci_parse_config(tcpci);
 	if (err < 0)
diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h
index 5ef07a56d67a..b418fe11b527 100644
--- a/drivers/usb/typec/tcpm/tcpci.h
+++ b/drivers/usb/typec/tcpm/tcpci.h
@@ -143,6 +143,9 @@
 /*
  * @TX_BUF_BYTE_x_hidden
  *		optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT.
+ * @frs_sourcing_vbus:
+ *		Optional; Callback to perform chip specific operations when FRS
+ *		is sourcing vbus.
  */
 struct tcpci;
 struct tcpci_data {
@@ -154,6 +157,7 @@ struct tcpci_data {
 	int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,
 				  enum typec_cc_status cc);
 	int (*set_vbus)(struct tcpci *tcpci, struct tcpci_data *data, bool source, bool sink);
+	void (*frs_sourcing_vbus)(struct tcpci *tcpci, struct tcpci_data *data);
 };
 
 struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);
-- 
2.29.0.rc1.297.gfa9743e501-goog


  parent reply	other threads:[~2020-10-20  9:37 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-20  9:36 [PATCH v11 00/10] *** TCPM support for FRS and AutoDischarge Disconnect *** Badhri Jagan Sridharan
2020-10-20  9:36 ` [PATCH v11 01/10] dt-bindings: connector: Add property to set initial current cap for FRS Badhri Jagan Sridharan
2020-10-26 14:00   ` Rob Herring
2020-10-20  9:36 ` [PATCH v11 02/10] dt-bindings: usb: Maxim type-c controller device tree binding document Badhri Jagan Sridharan
2020-10-26 14:03   ` Rob Herring
2020-10-20  9:36 ` [PATCH v11 03/10] usb: typec: tcpci_maxim: Fix the compatible string Badhri Jagan Sridharan
2020-10-20  9:36 ` [PATCH v11 04/10] usb: typec: tcpm: Refactor logic for new-source-frs-typec-current Badhri Jagan Sridharan
2020-10-20  9:36 ` [PATCH v11 05/10] usb: typec: tcpm: frs sourcing vbus callback Badhri Jagan Sridharan
2020-10-20  9:36 ` Badhri Jagan Sridharan [this message]
2020-10-20  9:36 ` [PATCH v11 07/10] usb: typec: tcpci_maxim: Fix vbus stuck on upon diconnecting sink Badhri Jagan Sridharan
2020-10-20  9:36 ` [PATCH v11 08/10] usb: typec: tcpm: Implement enabling Auto Discharge disconnect support Badhri Jagan Sridharan
2020-10-20  9:36 ` [PATCH v11 09/10] usb: typec: tcpci: Implement Auto discharge disconnect callbacks Badhri Jagan Sridharan
2020-10-20  9:36 ` [PATCH v11 10/10] usb: typec: tcpci_maxim: Enable auto discharge disconnect Badhri Jagan Sridharan
2020-10-28 12:10 ` [PATCH v11 00/10] *** TCPM support for FRS and AutoDischarge Disconnect *** Greg Kroah-Hartman

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