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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 v9 10/15] usb: typec: tcpci: frs sourcing vbus callback
Date: Mon, 28 Sep 2020 19:39:59 -0700
Message-ID: <20200929024004.244992-11-badhri@google.com> (raw)
In-Reply-To: <20200929024004.244992-1-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>
---
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.
---
 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);
-- 
2.28.0.709.gb0816b6eb0-goog


  parent reply index

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-29  2:39 [PATCH v9 00/15] TCPM support for FRS and AutoDischarge Disconnect Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 01/15] usb: typec: tcpci: Add a getter method to retrieve tcpm_port reference Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 02/15] usb: typec: tcpci: Add set_vbus tcpci callback Badhri Jagan Sridharan
2020-10-02 13:39   ` Greg Kroah-Hartman
2020-10-02 13:40     ` Greg Kroah-Hartman
2020-10-02 16:08       ` Badhri Jagan Sridharan
2020-10-03 15:57         ` Greg Kroah-Hartman
2020-10-08  6:32           ` Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 03/15] dt-bindings: usb: Maxim type-c controller device tree binding document Badhri Jagan Sridharan
2020-10-05 14:46   ` Rob Herring
2020-10-08  0:42     ` Badhri Jagan Sridharan
2020-10-13 13:43       ` Rob Herring
2020-10-13 13:50         ` Rob Herring
2020-10-20  6:16           ` Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 04/15] usb: typec: tcpci_maxim: Chip level TCPC driver Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 05/15] dt-bindings: connector: Add property to set initial current cap for FRS Badhri Jagan Sridharan
2020-10-06 18:29   ` Rob Herring
2020-10-08  1:06     ` Badhri Jagan Sridharan
2020-10-13 14:15       ` Rob Herring
2020-10-20  9:43         ` Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 06/15] usb: typec: tcpm: Add support for Sink Fast Role SWAP(FRS) Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 07/15] usb: typec: tcpci: Implement callbacks for FRS Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 08/15] usb: typec: tcpci_maxim: Add support for Sink FRS Badhri Jagan Sridharan
2020-09-29  2:39 ` [PATCH v9 09/15] usb: typec: tcpm: frs sourcing vbus callback Badhri Jagan Sridharan
2020-09-29  2:39 ` Badhri Jagan Sridharan [this message]
2020-09-29  2:40 ` [PATCH v9 11/15] usb: typec: tcpci_max77759: Fix vbus stuck on upon diconnecting sink Badhri Jagan Sridharan
2020-09-29  2:40 ` [PATCH v9 12/15] usb: typec: tcpm: Parse frs type-c current from device tree Badhri Jagan Sridharan
2020-09-29  2:40 ` [PATCH v9 13/15] usb: typec: tcpm: Implement enabling Auto Discharge disconnect support Badhri Jagan Sridharan
2020-09-29  2:40 ` [PATCH v9 14/15] usb: typec: tcpci: Implement Auto discharge disconnect callbacks Badhri Jagan Sridharan
2020-09-29  2:40 ` [PATCH v9 15/15] usb: typec: tcpci_maxim: Enable auto discharge disconnect Badhri Jagan Sridharan

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