From patchwork Mon Feb 5 16:43:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 13545848 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 045F24121B for ; Mon, 5 Feb 2024 16:43:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707151418; cv=none; b=pbFsQjPlBOvEb6frr4/WpQ2+d+K9twA4NnxhPltt06wa7DxKS1VM06cl9R4f+g/l/qrGzfurRbcfPoOaV8XvZXXzaIbRQBofshNIW6syc6tpY1mPW35frPiS44OjGu3X7Ks8nACb84lBr/3Kxz4HRTD/h2+FVBTXVu4RyDFLLdw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707151418; c=relaxed/simple; bh=4GHUITov1D4E/JQZU7O2PuGsE/9LeCQp7fnZyPsU8lM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=F0FFsuLsylOjpOgx2FNyGCT1vVeW6OygWx5e/K6bdsbSIm7NCItR35Cy3tuKqVAMxQZqr9AAl9Eu4DQXiFCQBKqF5SqD26qtHAefT7IRbRFsMeDphMviQ+Qad9hOkETQN6p8qjdJUP07ChRno5xC8eMQulupxvDBmlKLUEwyti0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1rX240-0004Lp-Fe; Mon, 05 Feb 2024 17:43:20 +0100 From: Marco Felsch To: gregkh@linuxfoundation.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, linux@roeck-us.net, heikki.krogerus@linux.intel.com Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 4/4] usb: typec: tcpci: add support to set connector orientation Date: Mon, 5 Feb 2024 17:43:16 +0100 Message-Id: <20240205164316.805408-5-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240205164316.805408-1-m.felsch@pengutronix.de> References: <20240205164316.805408-1-m.felsch@pengutronix.de> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::28 X-SA-Exim-Mail-From: m.felsch@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-usb@vger.kernel.org This add the support to set the optional connector orientation bit which is part of the optional CONFIG_STANDARD_OUTPUT register 0x18 [1]. This allows system designers to connect the tcpc orientation pin directly to the 2:1 ss-mux. [1] https://www.usb.org/sites/default/files/documents/usb-port_controller_specification_rev2.0_v1.0_0.pdf Signed-off-by: Marco Felsch --- drivers/usb/typec/tcpm/tcpci.c | 43 ++++++++++++++++++++++++++++++++++ include/linux/usb/tcpci.h | 8 +++++++ 2 files changed, 51 insertions(+) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 7118551827f6..7ce9d4923bc7 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -67,6 +67,18 @@ static int tcpci_write16(struct tcpci *tcpci, unsigned int reg, u16 val) return regmap_raw_write(tcpci->regmap, reg, &val, sizeof(u16)); } +static bool tcpci_check_std_output_cap(struct regmap *regmap, u8 mask) +{ + unsigned int reg; + int ret; + + ret = regmap_read(regmap, TCPC_STD_OUTPUT_CAP, ®); + if (ret < 0) + return ret; + + return (reg & mask) == mask; +} + static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); @@ -301,6 +313,27 @@ static int tcpci_set_polarity(struct tcpc_dev *tcpc, TCPC_TCPC_CTRL_ORIENTATION : 0); } +static int tcpci_set_orientation(struct tcpc_dev *tcpc, + enum typec_orientation orientation) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + + switch (orientation) { + case TYPEC_ORIENTATION_NONE: + /* We can't put a single output into high impedance */ + case TYPEC_ORIENTATION_NORMAL: + reg = TCPC_CONFIG_STD_OUTPUT_ORIENTATION_NORMAL; + break; + case TYPEC_ORIENTATION_REVERSE: + reg = TCPC_CONFIG_STD_OUTPUT_ORIENTATION_FLIPPED; + break; + } + + return regmap_update_bits(tcpci->regmap, TCPC_CONFIG_STD_OUTPUT, + TCPC_CONFIG_STD_OUTPUT_ORIENTATION_MASK, reg); +} + static void tcpci_set_partner_usb_comm_capable(struct tcpc_dev *tcpc, bool capable) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); @@ -808,6 +841,9 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data) if (tcpci->data->vbus_vsafe0v) tcpci->tcpc.is_vbus_vsafe0v = tcpci_is_vbus_vsafe0v; + if (tcpci->data->set_orientation) + tcpci->tcpc.set_orientation = tcpci_set_orientation; + err = tcpci_parse_config(tcpci); if (err < 0) return ERR_PTR(err); @@ -851,6 +887,13 @@ static int tcpci_probe(struct i2c_client *client) if (err < 0) return err; + err = tcpci_check_std_output_cap(chip->data.regmap, + TCPC_STD_OUTPUT_CAP_ORIENTATION); + if (err < 0) + return err; + + chip->data.set_orientation = err; + chip->tcpci = tcpci_register_port(&client->dev, &chip->data); if (IS_ERR(chip->tcpci)) return PTR_ERR(chip->tcpci); diff --git a/include/linux/usb/tcpci.h b/include/linux/usb/tcpci.h index 467e8045e9f8..f2bfb4250366 100644 --- a/include/linux/usb/tcpci.h +++ b/include/linux/usb/tcpci.h @@ -47,6 +47,9 @@ #define TCPC_SINK_FAST_ROLE_SWAP BIT(0) #define TCPC_CONFIG_STD_OUTPUT 0x18 +#define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_MASK BIT(0) +#define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_NORMAL 0 +#define TCPC_CONFIG_STD_OUTPUT_ORIENTATION_FLIPPED 1 #define TCPC_TCPC_CTRL 0x19 #define TCPC_TCPC_CTRL_ORIENTATION BIT(0) @@ -127,6 +130,7 @@ #define TCPC_DEV_CAP_2 0x26 #define TCPC_STD_INPUT_CAP 0x28 #define TCPC_STD_OUTPUT_CAP 0x29 +#define TCPC_STD_OUTPUT_CAP_ORIENTATION BIT(0) #define TCPC_MSG_HDR_INFO 0x2e #define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3) @@ -198,12 +202,16 @@ struct tcpci; * Chip level drivers are expected to check for contaminant and call * tcpm_clean_port when the port is clean to put the port back into * toggling state. + * @set_orientation: + * Optional; Enable setting the connector orientation + * CONFIG_STANDARD_OUTPUT (0x18) bit0. */ struct tcpci_data { struct regmap *regmap; unsigned char TX_BUF_BYTE_x_hidden:1; unsigned char auto_discharge_disconnect:1; unsigned char vbus_vsafe0v:1; + unsigned char set_orientation:1; int (*init)(struct tcpci *tcpci, struct tcpci_data *data); int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data,