Re: [PATCH v4 12/18] usb: typec: qcom: Add Qualcomm PMIC TCPM support

Jianhua Lu
2023-03-23T14:37:18Z

On Sat, Mar 18, 2023 at 12:18:22PM +0000, Bryan O'Donoghue wrote:
> This commit adds a QCOM PMIC TCPM driver with an initial pm8150b
> block.
>
> qcom_pmic_virt_tcpm.c : Responsible for registering with TCPM and
> arbitrates access to the Type-C and PDPHY hardware
> blocks in one place.
> This driver presents a virtual device to the Linux
> TCPM layer.
>
> qcom_pmic_pdphy.c: Rsponsible for interfacing with the PDPHY hardware and
> processing power-delivery related calls from TCPM.
> This hardware binding can be extended to facilitate
> similar hardware in different PMICs.
>
> qcom_pmic_typec.c: Responsible for notifying and processing Type-C
> related calls from TCPM.
> This hardware binding can be extended to facilitate
> similar hardware in different PMICs.
>
> This code provides all of the same functionality as the existing
> qcom typec driver plus power-delivery as well.
>
> As a result commit 6c8cf3695176 ("usb: typec: Add QCOM PMIC typec detection
> driver") can be deleted entirely.
>
> References code from Jonathan Marek, Jack Pham, Wesley Cheng, Hemant Kumar,
> Guru Das Srinagesh and Ashay Jaiswal.
>
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> ---
> MAINTAINERS | 10 +
> drivers/usb/typec/Kconfig | 13 -
> drivers/usb/typec/Makefile | 1 -
> drivers/usb/typec/qcom-pmic-typec.c | 261 -------
> drivers/usb/typec/tcpm/Kconfig | 11 +
> drivers/usb/typec/tcpm/Makefile | 1 +
> drivers/usb/typec/tcpm/qcom/Makefile | 6 +
> drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.c | 605 +++++++++++++++++
> drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.h | 85 +++
> drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 637 ++++++++++++++++++
> drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.h | 163 +++++
> .../usb/typec/tcpm/qcom/qcom_pmic_virt_tcpm.c | 326 +++++++++
> 12 files changed, 1844 insertions(+), 275 deletions(-)
> delete mode 100644 drivers/usb/typec/qcom-pmic-typec.c
> create mode 100644 drivers/usb/typec/tcpm/qcom/Makefile
> create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.c
> create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.h
> create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.h
> create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_virt_tcpm.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 9b218dc388323..59f8a3c0b6364 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -17435,6 +17435,16 @@ S: Maintained
> F: Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> F: drivers/thermal/qcom/
>
> +QUALCOMM TYPEC PORT MANAGER DRIVER
> +M: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> +L: linux-arm-msm@vger.kernel.org
> +L: linux-usb@vger.kernel.org
> +S: Maintained
> +F: Documentation/devicetree/bindings/usb/qcom,pmic-*.yaml
> +F: drivers/usb/typec/tcpm/qcom/
> +F: include/dt-bindings/usb/typec/qcom,pmic-pdphy.h
> +F: include/dt-bindings/usb/typec/qcom,pmic-typec.h
> +
> QUALCOMM VENUS VIDEO ACCELERATOR DRIVER
> M: Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
> M: Vikash Garodia <quic_vgarodia@quicinc.com>
> diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig
> index 831e7049977df..2f80c2792dbda 100644
> --- a/drivers/usb/typec/Kconfig
> +++ b/drivers/usb/typec/Kconfig
> @@ -100,19 +100,6 @@ config TYPEC_STUSB160X
> If you choose to build this driver as a dynamically linked module, the
> module will be called stusb160x.ko.
>
> -config TYPEC_QCOM_PMIC
> - tristate "Qualcomm PMIC USB Type-C driver"
> - depends on ARCH_QCOM || COMPILE_TEST
> - depends on USB_ROLE_SWITCH || !USB_ROLE_SWITCH
> - help
> - Driver for supporting role switch over the Qualcomm PMIC. This will
> - handle the USB Type-C role and orientation detection reported by the
> - QCOM PMIC if the PMIC has the capability to handle USB Type-C
> - detection.
> -
> - It will also enable the VBUS output to connected devices when a
> - DFP connection is made.
> -
> config TYPEC_WUSB3801
> tristate "Willsemi WUSB3801 Type-C port controller driver"
> depends on I2C
> diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile
> index 4a83dad51a6cf..7a368fea61bc9 100644
> --- a/drivers/usb/typec/Makefile
> +++ b/drivers/usb/typec/Makefile
> @@ -8,7 +8,6 @@ obj-$(CONFIG_TYPEC_UCSI) += ucsi/
> obj-$(CONFIG_TYPEC_TPS6598X) += tipd/
> obj-$(CONFIG_TYPEC_ANX7411) += anx7411.o
> obj-$(CONFIG_TYPEC_HD3SS3220) += hd3ss3220.o
> -obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom-pmic-typec.o
> obj-$(CONFIG_TYPEC_STUSB160X) += stusb160x.o
> obj-$(CONFIG_TYPEC_RT1719) += rt1719.o
> obj-$(CONFIG_TYPEC_WUSB3801) += wusb3801.o
> diff --git a/drivers/usb/typec/qcom-pmic-typec.c b/drivers/usb/typec/qcom-pmic-typec.c
> deleted file mode 100644
> index 432ea62f1bab6..0000000000000
> --- a/drivers/usb/typec/qcom-pmic-typec.c
> +++ /dev/null
> @@ -1,261 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Copyright (c) 2020, The Linux Foundation. All rights reserved.
> - */
> -
> -#include <linux/err.h>
> -#include <linux/interrupt.h>
> -#include <linux/kernel.h>
> -#include <linux/mod_devicetable.h>
> -#include <linux/module.h>
> -#include <linux/platform_device.h>
> -#include <linux/regmap.h>
> -#include <linux/regulator/consumer.h>
> -#include <linux/slab.h>
> -#include <linux/usb/role.h>
> -#include <linux/usb/typec_mux.h>
> -
> -#define TYPEC_MISC_STATUS 0xb
> -#define CC_ATTACHED BIT(0)
> -#define CC_ORIENTATION BIT(1)
> -#define SNK_SRC_MODE BIT(6)
> -#define TYPEC_MODE_CFG 0x44
> -#define TYPEC_DISABLE_CMD BIT(0)
> -#define EN_SNK_ONLY BIT(1)
> -#define EN_SRC_ONLY BIT(2)
> -#define TYPEC_VCONN_CONTROL 0x46
> -#define VCONN_EN_SRC BIT(0)
> -#define VCONN_EN_VAL BIT(1)
> -#define TYPEC_EXIT_STATE_CFG 0x50
> -#define SEL_SRC_UPPER_REF BIT(2)
> -#define TYPEC_INTR_EN_CFG_1 0x5e
> -#define TYPEC_INTR_EN_CFG_1_MASK GENMASK(7, 0)
> -
> -struct qcom_pmic_typec {
> - struct device *dev;
> - struct regmap *regmap;
> - u32 base;
> -
> - struct typec_port *port;
> - struct usb_role_switch *role_sw;
> -
> - struct regulator *vbus_reg;
> - bool vbus_enabled;
> -};
> -
> -static void qcom_pmic_typec_enable_vbus_regulator(struct qcom_pmic_typec
> - *qcom_usb, bool enable)
> -{
> - int ret;
> -
> - if (enable == qcom_usb->vbus_enabled)
> - return;
> -
> - if (enable) {
> - ret = regulator_enable(qcom_usb->vbus_reg);
> - if (ret)
> - return;
> - } else {
> - ret = regulator_disable(qcom_usb->vbus_reg);
> - if (ret)
> - return;
> - }
> - qcom_usb->vbus_enabled = enable;
> -}
> -
> -static void qcom_pmic_typec_check_connection(struct qcom_pmic_typec *qcom_usb)
> -{
> - enum typec_orientation orientation;
> - enum usb_role role;
> - unsigned int stat;
> - bool enable_vbus;
> -
> - regmap_read(qcom_usb->regmap, qcom_usb->base + TYPEC_MISC_STATUS,
> - &stat);
> -
> - if (stat & CC_ATTACHED) {
> - orientation = (stat & CC_ORIENTATION) ?
> - TYPEC_ORIENTATION_REVERSE :
> - TYPEC_ORIENTATION_NORMAL;
> - typec_set_orientation(qcom_usb->port, orientation);
> -
> - role = (stat & SNK_SRC_MODE) ? USB_ROLE_HOST : USB_ROLE_DEVICE;
> - if (role == USB_ROLE_HOST)
> - enable_vbus = true;
> - else
> - enable_vbus = false;
> - } else {
> - role = USB_ROLE_NONE;
> - enable_vbus = false;
> - }
> -
> - qcom_pmic_typec_enable_vbus_regulator(qcom_usb, enable_vbus);
> - usb_role_switch_set_role(qcom_usb->role_sw, role);
> -}
> -
> -static irqreturn_t qcom_pmic_typec_interrupt(int irq, void *_qcom_usb)
> -{
> - struct qcom_pmic_typec *qcom_usb = _qcom_usb;
> -
> - qcom_pmic_typec_check_connection(qcom_usb);
> - return IRQ_HANDLED;
> -}
> -
> -static void qcom_pmic_typec_typec_hw_init(struct qcom_pmic_typec *qcom_usb,
> - enum typec_port_type type)
> -{
> - u8 mode = 0;
> -
> - regmap_update_bits(qcom_usb->regmap,
> - qcom_usb->base + TYPEC_INTR_EN_CFG_1,
> - TYPEC_INTR_EN_CFG_1_MASK, 0);
> -
> - if (type == TYPEC_PORT_SRC)
> - mode = EN_SRC_ONLY;
> - else if (type == TYPEC_PORT_SNK)
> - mode = EN_SNK_ONLY;
> -
> - regmap_update_bits(qcom_usb->regmap, qcom_usb->base + TYPEC_MODE_CFG,
> - EN_SNK_ONLY | EN_SRC_ONLY, mode);
> -
> - regmap_update_bits(qcom_usb->regmap,
> - qcom_usb->base + TYPEC_VCONN_CONTROL,
> - VCONN_EN_SRC | VCONN_EN_VAL, VCONN_EN_SRC);
> - regmap_update_bits(qcom_usb->regmap,
> - qcom_usb->base + TYPEC_EXIT_STATE_CFG,
> - SEL_SRC_UPPER_REF, SEL_SRC_UPPER_REF);
> -}
> -
> -static int qcom_pmic_typec_probe(struct platform_device *pdev)
> -{
> - struct qcom_pmic_typec *qcom_usb;
> - struct device *dev = &pdev->dev;
> - struct fwnode_handle *fwnode;
> - struct typec_capability cap;
> - const char *buf;
> - int ret, irq, role;
> - u32 reg;
> -
> - ret = device_property_read_u32(dev, "reg", &reg);
> - if (ret < 0) {
> - dev_err(dev, "missing base address\n");
> - return ret;
> - }
> -
> - qcom_usb = devm_kzalloc(dev, sizeof(*qcom_usb), GFP_KERNEL);
> - if (!qcom_usb)
> - return -ENOMEM;
> -
> - qcom_usb->dev = dev;
> - qcom_usb->base = reg;
> -
> - qcom_usb->regmap = dev_get_regmap(dev->parent, NULL);
> - if (!qcom_usb->regmap) {
> - dev_err(dev, "Failed to get regmap\n");
> - return -EINVAL;
> - }
> -
> - qcom_usb->vbus_reg = devm_regulator_get(qcom_usb->dev, "usb_vbus");
> - if (IS_ERR(qcom_usb->vbus_reg))
> - return PTR_ERR(qcom_usb->vbus_reg);
> -
> - fwnode = device_get_named_child_node(dev, "connector");
> - if (!fwnode)
> - return -EINVAL;
> -
> - ret = fwnode_property_read_string(fwnode, "power-role", &buf);
> - if (!ret) {
> - role = typec_find_port_power_role(buf);
> - if (role < 0)
> - role = TYPEC_PORT_SNK;
> - } else {
> - role = TYPEC_PORT_SNK;
> - }
> - cap.type = role;
> -
> - ret = fwnode_property_read_string(fwnode, "data-role", &buf);
> - if (!ret) {
> - role = typec_find_port_data_role(buf);
> - if (role < 0)
> - role = TYPEC_PORT_UFP;
> - } else {
> - role = TYPEC_PORT_UFP;
> - }
> - cap.data = role;
> -
> - cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
> - cap.fwnode = fwnode;
> - qcom_usb->port = typec_register_port(dev, &cap);
> - if (IS_ERR(qcom_usb->port)) {
> - ret = PTR_ERR(qcom_usb->port);
> - dev_err(dev, "Failed to register type c port %d\n", ret);
> - goto err_put_node;
> - }
> - fwnode_handle_put(fwnode);
> -
> - qcom_usb->role_sw = fwnode_usb_role_switch_get(dev_fwnode(qcom_usb->dev));
> - if (IS_ERR(qcom_usb->role_sw)) {
> - ret = dev_err_probe(dev, PTR_ERR(qcom_usb->role_sw),
> - "failed to get role switch\n");
> - goto err_typec_port;
> - }
> -
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0)
> - goto err_usb_role_sw;
> -
> - ret = devm_request_threaded_irq(qcom_usb->dev, irq, NULL,
> - qcom_pmic_typec_interrupt, IRQF_ONESHOT,
> - "qcom-pmic-typec", qcom_usb);
> - if (ret) {
> - dev_err(&pdev->dev, "Could not request IRQ\n");
> - goto err_usb_role_sw;
> - }
> -
> - platform_set_drvdata(pdev, qcom_usb);
> - qcom_pmic_typec_typec_hw_init(qcom_usb, cap.type);
> - qcom_pmic_typec_check_connection(qcom_usb);
> -
> - return 0;
> -
> -err_usb_role_sw:
> - usb_role_switch_put(qcom_usb->role_sw);
> -err_typec_port:
> - typec_unregister_port(qcom_usb->port);
> -err_put_node:
> - fwnode_handle_put(fwnode);
> -
> - return ret;
> -}
> -
> -static int qcom_pmic_typec_remove(struct platform_device *pdev)
> -{
> - struct qcom_pmic_typec *qcom_usb = platform_get_drvdata(pdev);
> -
> - usb_role_switch_set_role(qcom_usb->role_sw, USB_ROLE_NONE);
> - qcom_pmic_typec_enable_vbus_regulator(qcom_usb, 0);
> -
> - typec_unregister_port(qcom_usb->port);
> - usb_role_switch_put(qcom_usb->role_sw);
> -
> - return 0;
> -}
> -
> -static const struct of_device_id qcom_pmic_typec_table[] = {
> - { .compatible = "qcom,pm8150b-usb-typec" },
> - { }
> -};
> -MODULE_DEVICE_TABLE(of, qcom_pmic_typec_table);
> -
> -static struct platform_driver qcom_pmic_typec = {
> - .driver = {
> - .name = "qcom,pmic-typec",
> - .of_match_table = qcom_pmic_typec_table,
> - },
> - .probe = qcom_pmic_typec_probe,
> - .remove = qcom_pmic_typec_remove,
> -};
> -module_platform_driver(qcom_pmic_typec);
> -
> -MODULE_DESCRIPTION("QCOM PMIC USB type C driver");
> -MODULE_LICENSE("GPL v2");
> diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig
> index e6b88ca4a4b94..5d393f520fc2f 100644
> --- a/drivers/usb/typec/tcpm/Kconfig
> +++ b/drivers/usb/typec/tcpm/Kconfig
> @@ -76,4 +76,15 @@ config TYPEC_WCOVE
> To compile this driver as module, choose M here: the module will be
> called typec_wcove.ko
>
> +config TYPEC_QCOM_PMIC
> + tristate "Qualcomm PMIC USB Type-C Port Controller Manager driver"
> + depends on ARCH_QCOM || COMPILE_TEST
> + help
> + A Type-C port and Power Delivery driver which aggregates two
> + discrete pieces of silicon in the PM8150b PMIC block: the
> + Type-C port controller and the Power Delivery PHY.
> +
> + This driver enables Type-C role switching, orientation, Alternate
> + mode and Power Delivery support both for VBUS and VCONN.
> +
> endif # TYPEC_TCPM
> diff --git a/drivers/usb/typec/tcpm/Makefile b/drivers/usb/typec/tcpm/Makefile
> index 08e57bb499cbc..7a8cad0c0bdb4 100644
> --- a/drivers/usb/typec/tcpm/Makefile
> +++ b/drivers/usb/typec/tcpm/Makefile
> @@ -9,3 +9,4 @@ obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o
> obj-$(CONFIG_TYPEC_TCPCI_MT6370) += tcpci_mt6370.o
> obj-$(CONFIG_TYPEC_TCPCI_MAXIM) += tcpci_maxim.o
> tcpci_maxim-y += tcpci_maxim_core.o maxim_contaminant.o
> +obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom/
> diff --git a/drivers/usb/typec/tcpm/qcom/Makefile b/drivers/usb/typec/tcpm/qcom/Makefile
> new file mode 100644
> index 0000000000000..e78458292e0cf
> --- /dev/null
> +++ b/drivers/usb/typec/tcpm/qcom/Makefile
> @@ -0,0 +1,6 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom_pmic_tcpm.o
> +qcom_pmic_tcpm-y += qcom_pmic_virt_tcpm.o \
> + qcom_pmic_typec.o \
> + qcom_pmic_pdphy.o
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.c
> new file mode 100644
> index 0000000000000..746f6a79fc315
> --- /dev/null
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.c
> @@ -0,0 +1,605 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2023, Linaro Ltd. All rights reserved.
> + */
> +
> +#include <linux/err.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_irq.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +#include <linux/usb/pd.h>
> +#include <linux/usb/tcpm.h>
> +#include <dt-bindings/usb/typec/qcom,pmic-pdphy.h>
> +#include "qcom_pmic_pdphy.h"
> +
> +#define PMIC_PDPHY_MAX_IRQS 0x08
> +
> +struct pmic_pdphy_irq_params {
> + int virq;
> + char *irq_name;
> +};
> +
> +struct pmic_pdphy_resources {
> + unsigned int nr_irqs;
> + struct pmic_pdphy_irq_params irq_params[PMIC_PDPHY_MAX_IRQS];
> +};
> +
> +struct pmic_pdphy_irq_data {
> + int virq;
> + int irq;
> + struct pmic_pdphy *pmic_pdphy;
> +};
> +
> +struct pmic_pdphy {
> + struct device *dev;
> + struct tcpm_port *tcpm_port;
> + struct regmap *regmap;
> + u32 base;
> +
> + unsigned int nr_irqs;
> + struct pmic_pdphy_irq_data *irq_data;
> +
> + struct work_struct reset_work;
> + struct work_struct receive_work;
> + struct regulator *vdd_pdphy;
> + spinlock_t lock; /* Register atomicity */
> +};
> +
> +static void qcom_pmic_pdphy_reset_on(struct pmic_pdphy *pmic_pdphy)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + int ret;
> +
> + /* Terminate TX */
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_CONTROL_REG, 0);
> + if (ret)
> + goto err;
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_FRAME_FILTER_REG, 0);
> + if (ret)
> + goto err;
> +
> + return;
> +err:
> + dev_err(dev, "pd_reset_on error\n");
> +}
> +
> +static void qcom_pmic_pdphy_reset_off(struct pmic_pdphy *pmic_pdphy)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + int ret;
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_FRAME_FILTER_REG,
> + FRAME_FILTER_EN_SOP | FRAME_FILTER_EN_HARD_RESET);
> + if (ret)
> + dev_err(dev, "pd_reset_off error\n");
> +}
> +
> +static void qcom_pmic_pdphy_sig_reset_work(struct work_struct *work)
> +{
> + struct pmic_pdphy *pmic_pdphy = container_of(work, struct pmic_pdphy,
> + reset_work);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&pmic_pdphy->lock, flags);
> +
> + qcom_pmic_pdphy_reset_on(pmic_pdphy);
> + qcom_pmic_pdphy_reset_off(pmic_pdphy);
> +
> + spin_unlock_irqrestore(&pmic_pdphy->lock, flags);
> +
> + tcpm_pd_hard_reset(pmic_pdphy->tcpm_port);
> +}
> +
> +static int
> +qcom_pmic_pdphy_clear_tx_control_reg(struct pmic_pdphy *pmic_pdphy)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + unsigned int val;
> + int ret;
> +
> + /* Clear TX control register */
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_CONTROL_REG, 0);
> + if (ret)
> + goto done;
> +
> + /* Perform readback to ensure sufficient delay for command to latch */
> + ret = regmap_read(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_CONTROL_REG, &val);
> +
> +done:
> + if (ret)
> + dev_err(dev, "pd_clear_tx_control_reg: clear tx flag\n");
> +
> + return ret;
> +}
> +
> +static int
> +qcom_pmic_pdphy_pd_transmit_signal(struct pmic_pdphy *pmic_pdphy,
> + enum tcpm_transmit_type type,
> + unsigned int negotiated_rev)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + unsigned int val;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_pdphy->lock, flags);
> +
> + /* Clear TX control register */
> + ret = qcom_pmic_pdphy_clear_tx_control_reg(pmic_pdphy);
> + if (ret)
> + goto done;
> +
> + val = TX_CONTROL_SEND_SIGNAL;
> + if (negotiated_rev == PD_REV30)
> + val |= TX_CONTROL_RETRY_COUNT(2);
> + else
> + val |= TX_CONTROL_RETRY_COUNT(3);
> +
> + if (type == TCPC_TX_CABLE_RESET || type == TCPC_TX_HARD_RESET)
> + val |= TX_CONTROL_FRAME_TYPE(1);
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_CONTROL_REG, val);
> +
> +done:
> + spin_unlock_irqrestore(&pmic_pdphy->lock, flags);
> +
> + dev_vdbg(dev, "pd_transmit_signal: type %d negotiate_rev %d send %d\n",
> + type, negotiated_rev, ret);
> +
> + return ret;
> +}
> +
> +static int
> +qcom_pmic_pdphy_pd_transmit_payload(struct pmic_pdphy *pmic_pdphy,
> + enum tcpm_transmit_type type,
> + const struct pd_message *msg,
> + unsigned int negotiated_rev)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + unsigned int val, hdr_len, txbuf_len, txsize_len;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_pdphy->lock, flags);
> +
> + ret = regmap_read(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG,
> + &val);
> + if (ret)
> + goto done;
> +
> + if (val) {
> + dev_err(dev, "pd_transmit_payload: RX message pending\n");
> + ret = -EBUSY;
> + goto done;
> + }
> +
> + /* Clear TX control register */
> + ret = qcom_pmic_pdphy_clear_tx_control_reg(pmic_pdphy);
> + if (ret)
> + goto done;
> +
> + hdr_len = sizeof(msg->header);
> + txbuf_len = pd_header_cnt_le(msg->header) * 4;
> + txsize_len = hdr_len + txbuf_len - 1;
> +
> + /* Write message header sizeof(u16) to USB_PDPHY_TX_BUFFER_HDR_REG */
> + ret = regmap_bulk_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_BUFFER_HDR_REG,
> + &msg->header, hdr_len);
> + if (ret)
> + goto done;
> +
> + /* Write payload to USB_PDPHY_TX_BUFFER_DATA_REG for txbuf_len */
> + if (txbuf_len) {
> + ret = regmap_bulk_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_BUFFER_DATA_REG,
> + &msg->payload, txbuf_len);
> + if (ret)
> + goto done;
> + }
> +
> + /* Write total length ((header + data) - 1) to USB_PDPHY_TX_SIZE_REG */
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_SIZE_REG,
> + txsize_len);
> + if (ret)
> + goto done;
> +
> + /* Clear TX control register */
> + ret = qcom_pmic_pdphy_clear_tx_control_reg(pmic_pdphy);
> + if (ret)
> + goto done;
> +
> + /* Initiate transmit with retry count as indicated by PD revision */
> + val = TX_CONTROL_FRAME_TYPE(type) | TX_CONTROL_SEND_MSG;
> + if (pd_header_rev(msg->header) == PD_REV30)
> + val |= TX_CONTROL_RETRY_COUNT(2);
> + else
> + val |= TX_CONTROL_RETRY_COUNT(3);
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_TX_CONTROL_REG, val);
> +
> +done:
> + spin_unlock_irqrestore(&pmic_pdphy->lock, flags);
> +
> + if (ret) {
> + dev_err(dev, "pd_transmit_payload: %d hdr %*ph data %*ph ret %d\n",
> + ret, hdr_len, &msg->header, txbuf_len, &msg->payload, ret);
> + }
> +
> + return ret;
> +}
> +
> +int qcom_pmic_pdphy_pd_transmit(struct pmic_pdphy *pmic_pdphy,
> + enum tcpm_transmit_type type,
> + const struct pd_message *msg,
> + unsigned int negotiated_rev)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + int ret;
> +
> + if (msg) {
> + ret = qcom_pmic_pdphy_pd_transmit_payload(pmic_pdphy, type, msg,
> + negotiated_rev);
> + } else {
> + ret = qcom_pmic_pdphy_pd_transmit_signal(pmic_pdphy, type,
> + negotiated_rev);
> + }
> +
> + if (ret)
> + dev_dbg(dev, "pd_transmit: type %x result %d\n", type, ret);
> +
> + return ret;
> +}
> +
> +static void qcom_pmic_pdphy_pd_receive(struct pmic_pdphy *pmic_pdphy)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + struct pd_message msg;
> + unsigned int size, rx_status;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_pdphy->lock, flags);
> +
> + ret = regmap_read(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_RX_SIZE_REG, &size);
> + if (ret)
> + goto done;
> +
> + /* If we received a subsequent RX sig this value can be zero */
> + if ((size < 1 || size > sizeof(msg.payload))) {
> + dev_dbg(dev, "pd_receive: invalid size %d\n", size);
> + goto done;
> + }
> +
> + size += 1;
> + ret = regmap_read(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_RX_STATUS_REG,
> + &rx_status);
> +
> + if (ret)
> + goto done;
> +
> + ret = regmap_bulk_read(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_RX_BUFFER_REG,
> + (u8 *)&msg, size);
> + if (ret)
> + goto done;
> +
> + /* Return ownership of RX buffer to hardware */
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG, 0);
> +
> +done:
> + spin_unlock_irqrestore(&pmic_pdphy->lock, flags);
> +
> + if (!ret) {
> + dev_vdbg(dev, "pd_receive: handing %d bytes to tcpm\n", size);
> + tcpm_pd_receive(pmic_pdphy->tcpm_port, &msg);
> + }
> +}
> +
> +static irqreturn_t qcom_pmic_pdphy_isr(int irq, void *dev_id)
> +{
> + struct pmic_pdphy_irq_data *irq_data = dev_id;
> + struct pmic_pdphy *pmic_pdphy = irq_data->pmic_pdphy;
> + struct device *dev = pmic_pdphy->dev;
> +
> + switch (irq_data->virq) {
> + case PMIC_PDPHY_SIG_TX_IRQ:
> + dev_err(dev, "isr: tx_sig\n");
> + break;
> + case PMIC_PDPHY_SIG_RX_IRQ:
> + schedule_work(&pmic_pdphy->reset_work);
> + break;
> + case PMIC_PDPHY_MSG_TX_IRQ:
> + tcpm_pd_transmit_complete(pmic_pdphy->tcpm_port,
> + TCPC_TX_SUCCESS);
> + break;
> + case PMIC_PDPHY_MSG_RX_IRQ:
> + qcom_pmic_pdphy_pd_receive(pmic_pdphy);
> + break;
> + case PMIC_PDPHY_MSG_TX_FAIL_IRQ:
> + tcpm_pd_transmit_complete(pmic_pdphy->tcpm_port,
> + TCPC_TX_FAILED);
> + break;
> + case PMIC_PDPHY_MSG_TX_DISCARD_IRQ:
> + tcpm_pd_transmit_complete(pmic_pdphy->tcpm_port,
> + TCPC_TX_DISCARDED);
> + break;
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +int qcom_pmic_pdphy_set_pd_rx(struct pmic_pdphy *pmic_pdphy, bool on)
> +{
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_pdphy->lock, flags);
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG, !on);
> +
> + spin_unlock_irqrestore(&pmic_pdphy->lock, flags);
> +
> + dev_dbg(pmic_pdphy->dev, "set_pd_rx: %s\n", on ? "on" : "off");
> +
> + return ret;
> +}
> +
> +int qcom_pmic_pdphy_set_roles(struct pmic_pdphy *pmic_pdphy,
> + bool data_role_host, bool power_role_src)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_pdphy->lock, flags);
> +
> + ret = regmap_update_bits(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_MSG_CONFIG_REG,
> + MSG_CONFIG_PORT_DATA_ROLE |
> + MSG_CONFIG_PORT_POWER_ROLE,
> + data_role_host << 3 | power_role_src << 2);
> +
> + spin_unlock_irqrestore(&pmic_pdphy->lock, flags);
> +
> + dev_dbg(dev, "pdphy_set_roles: data_role_host=%d power_role_src=%d\n",
> + data_role_host, power_role_src);
> +
> + return ret;
> +}
> +
> +static int qcom_pmic_pdphy_enable(struct pmic_pdphy *pmic_pdphy)
> +{
> + struct device *dev = pmic_pdphy->dev;
> + int ret;
> +
> + ret = regulator_enable(pmic_pdphy->vdd_pdphy);
> + if (ret)
> + return ret;
> +
> + /* PD 2.0, DR=TYPEC_DEVICE, PR=TYPEC_SINK */
> + ret = regmap_update_bits(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_MSG_CONFIG_REG,
> + MSG_CONFIG_SPEC_REV_MASK, PD_REV20);
> + if (ret)
> + goto done;
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_EN_CONTROL_REG, 0);
> + if (ret)
> + goto done;
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_EN_CONTROL_REG,
> + CONTROL_ENABLE);
> + if (ret)
> + goto done;
> +
> + qcom_pmic_pdphy_reset_off(pmic_pdphy);
> +done:
> + if (ret) {
> + regulator_disable(pmic_pdphy->vdd_pdphy);
> + dev_err(dev, "pdphy_enable fail %d\n", ret);
> + }
> +
> + return ret;
> +}
> +
> +static int qcom_pmic_pdphy_disable(struct pmic_pdphy *pmic_pdphy)
> +{
> + int ret;
> +
> + qcom_pmic_pdphy_reset_on(pmic_pdphy);
> +
> + ret = regmap_write(pmic_pdphy->regmap,
> + pmic_pdphy->base + USB_PDPHY_EN_CONTROL_REG, 0);
> +
> + regulator_disable(pmic_pdphy->vdd_pdphy);
> +
> + return ret;
> +}
> +
> +static int pmic_pdphy_reset(struct pmic_pdphy *pmic_pdphy)
> +{
> + int ret;
> +
> + ret = qcom_pmic_pdphy_disable(pmic_pdphy);
> + if (ret)
> + goto done;
> +
> + usleep_range(400, 500);
> + ret = qcom_pmic_pdphy_enable(pmic_pdphy);
> +done:
> + return ret;
> +}
> +
> +int qcom_pmic_pdphy_init(struct pmic_pdphy *pmic_pdphy,
> + struct tcpm_port *tcpm_port)
> +{
> + int i;
> + int ret;
> +
> + pmic_pdphy->tcpm_port = tcpm_port;
> +
> + ret = pmic_pdphy_reset(pmic_pdphy);
> + if (ret)
> + return ret;
> +
> + for (i = 0; i < pmic_pdphy->nr_irqs; i++)
> + enable_irq(pmic_pdphy->irq_data[i].irq);
> +
> + return 0;
> +}
> +
> +void qcom_pmic_pdphy_put(struct pmic_pdphy *pmic_pdphy)
> +{
> + put_device(pmic_pdphy->dev);
> +}
> +
> +static int qcom_pmic_pdphy_probe(struct platform_device *pdev)
> +{
> + struct pmic_pdphy *pmic_pdphy;
> + struct device *dev = &pdev->dev;
> + const struct pmic_pdphy_resources *res;
> + struct pmic_pdphy_irq_data *irq_data;
> + int i, ret, irq;
> + u32 reg;
> +
> + ret = device_property_read_u32(dev, "reg", &reg);
> + if (ret < 0) {
> + dev_err(dev, "missing base address\n");
> + return ret;
> + }
> +
> + res = of_device_get_match_data(dev);
> + if (!res)
> + return -ENODEV;
> +
> + if (!res->nr_irqs || res->nr_irqs > PMIC_PDPHY_MAX_IRQS)
> + return -EINVAL;
> +
> + pmic_pdphy = devm_kzalloc(dev, sizeof(*pmic_pdphy), GFP_KERNEL);
> + if (!pmic_pdphy)
> + return -ENOMEM;
> +
> + irq_data = devm_kzalloc(dev, sizeof(*irq_data) * res->nr_irqs,
> + GFP_KERNEL);
> + if (!irq_data)
> + return -ENOMEM;
> +
> + pmic_pdphy->vdd_pdphy = devm_regulator_get(dev, "vdd-pdphy");
> + if (IS_ERR(pmic_pdphy->vdd_pdphy))
> + return PTR_ERR(pmic_pdphy->vdd_pdphy);
> +
> + pmic_pdphy->dev = dev;
> + pmic_pdphy->base = reg;
> + pmic_pdphy->nr_irqs = res->nr_irqs;
> + pmic_pdphy->irq_data = irq_data;
> + spin_lock_init(&pmic_pdphy->lock);
> + INIT_WORK(&pmic_pdphy->reset_work, qcom_pmic_pdphy_sig_reset_work);
> +
> + pmic_pdphy->regmap = dev_get_regmap(dev->parent, NULL);
> + if (!pmic_pdphy->regmap) {
> + dev_err(dev, "Failed to get regmap\n");
> + return -ENODEV;
> + }
> +
> + platform_set_drvdata(pdev, pmic_pdphy);
> + for (i = 0; i < res->nr_irqs; i++, irq_data++) {
> + irq = platform_get_irq_byname(pdev, res->irq_params[i].irq_name);
> + if (irq < 0)
> + return irq;
> +
> + irq_data->pmic_pdphy = pmic_pdphy;
> + irq_data->irq = irq;
> + irq_data->virq = res->irq_params[i].virq;
> +
> + ret = devm_request_threaded_irq(dev, irq, NULL,
> + qcom_pmic_pdphy_isr,
> + IRQF_ONESHOT | IRQF_NO_AUTOEN,
> + res->irq_params[i].irq_name,
> + irq_data);
> + if (ret)
> + return ret;
> + }
> + return 0;
> +}
> +
> +static int qcom_pmic_pdphy_remove(struct platform_device *pdev)
> +{
> + struct pmic_pdphy *pmic_pdphy = platform_get_drvdata(pdev);
> +
> + qcom_pmic_pdphy_reset_on(pmic_pdphy);
> +
> + return 0;
> +}
> +
> +static struct pmic_pdphy_resources pm8150b_pdphy_res = {
> + .irq_params = {
> + {
> + .virq = PMIC_PDPHY_SIG_TX_IRQ,
> + .irq_name = "sig-tx",
> + },
> + {
> + .virq = PMIC_PDPHY_SIG_RX_IRQ,
> + .irq_name = "sig-rx",
> + },
> + {
> + .virq = PMIC_PDPHY_MSG_TX_IRQ,
> + .irq_name = "msg-tx",
> + },
> + {
> + .virq = PMIC_PDPHY_MSG_RX_IRQ,
> + .irq_name = "msg-rx",
> + },
> + {
> + .virq = PMIC_PDPHY_MSG_TX_FAIL_IRQ,
> + .irq_name = "msg-tx-failed",
> + },
> + {
> + .virq = PMIC_PDPHY_MSG_TX_DISCARD_IRQ,
> + .irq_name = "msg-tx-discarded",
> + },
> + {
> + .virq = PMIC_PDPHY_MSG_RX_DISCARD_IRQ,
> + .irq_name = "msg-rx-discarded",
> + },
> + },
> + .nr_irqs = 7,
> +};
> +
> +static const struct of_device_id qcom_pmic_pdphy_table[] = {
> + { .compatible = "qcom,pm8150b-pdphy", .data = &pm8150b_pdphy_res },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, qcom_pmic_pdphy_table);
> +
> +struct platform_driver qcom_pmic_pdphy_platform_driver = {
> + .driver = {
> + .name = "qcom,pmic-usb-pdphy",
> + .of_match_table = qcom_pmic_pdphy_table,
> + },
> + .probe = qcom_pmic_pdphy_probe,
> + .remove = qcom_pmic_pdphy_remove,
> +};
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.h b/drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.h
> new file mode 100644
> index 0000000000000..ac64139d4fe93
> --- /dev/null
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_pdphy.h
> @@ -0,0 +1,85 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023, Linaro Ltd. All rights reserved.
> + */
> +#ifndef __QCOM_PMIC_PDPHY_H__
> +#define __QCOM_PMIC_PDPHY_H__
> +
> +#define USB_PDPHY_MAX_DATA_OBJ_LEN 28
> +#define USB_PDPHY_MSG_HDR_LEN 2
> +
> +/* PD PHY register offsets and bit fields */
> +#define USB_PDPHY_MSG_CONFIG_REG 0x40
> +#define MSG_CONFIG_PORT_DATA_ROLE BIT(3)
> +#define MSG_CONFIG_PORT_POWER_ROLE BIT(2)
> +#define MSG_CONFIG_SPEC_REV_MASK (BIT(1) | BIT(0))
> +
> +#define USB_PDPHY_EN_CONTROL_REG 0x46
> +#define CONTROL_ENABLE BIT(0)
> +
> +#define USB_PDPHY_RX_STATUS_REG 0x4A
> +#define RX_FRAME_TYPE (BIT(0) | BIT(1) | BIT(2))
> +
> +#define USB_PDPHY_FRAME_FILTER_REG 0x4C
> +#define FRAME_FILTER_EN_HARD_RESET BIT(5)
> +#define FRAME_FILTER_EN_SOP BIT(0)
> +
> +#define USB_PDPHY_TX_SIZE_REG 0x42
> +#define TX_SIZE_MASK 0xF
> +
> +#define USB_PDPHY_TX_CONTROL_REG 0x44
> +#define TX_CONTROL_RETRY_COUNT(n) (((n) & 0x3) << 5)
> +#define TX_CONTROL_FRAME_TYPE(n) (((n) & 0x7) << 2)
> +#define TX_CONTROL_FRAME_TYPE_CABLE_RESET (0x1 << 2)
> +#define TX_CONTROL_SEND_SIGNAL BIT(1)
> +#define TX_CONTROL_SEND_MSG BIT(0)
> +
> +#define USB_PDPHY_RX_SIZE_REG 0x48
> +
> +#define USB_PDPHY_RX_ACKNOWLEDGE_REG 0x4B
> +#define RX_BUFFER_TOKEN BIT(0)
> +
> +#define USB_PDPHY_BIST_MODE_REG 0x4E
> +#define BIST_MODE_MASK 0xF
> +#define BIST_ENABLE BIT(7)
> +#define PD_MSG_BIST 0x3
> +#define PD_BIST_TEST_DATA_MODE 0x8
> +
> +#define USB_PDPHY_TX_BUFFER_HDR_REG 0x60
> +#define USB_PDPHY_TX_BUFFER_DATA_REG 0x62
> +
> +#define USB_PDPHY_RX_BUFFER_REG 0x80
> +
> +/* VDD regulator */
> +#define VDD_PDPHY_VOL_MIN 2800000 /* uV */
> +#define VDD_PDPHY_VOL_MAX 3300000 /* uV */
> +#define VDD_PDPHY_HPM_LOAD 3000 /* uA */
> +
> +/* Message Spec Rev field */
> +#define PD_MSG_HDR_REV(hdr) (((hdr) >> 6) & 3)
> +
> +/* timers */
> +#define RECEIVER_RESPONSE_TIME 15 /* tReceiverResponse */
> +#define HARD_RESET_COMPLETE_TIME 5 /* tHardResetComplete */
> +
> +struct pmic_pdphy;
> +extern struct platform_driver qcom_pmic_pdphy_platform_driver;
> +
> +int qcom_pmic_pdphy_init(struct pmic_pdphy *pmic_pdphy,
> + struct tcpm_port *tcpm_port);
> +
> +void qcom_pmic_pdphy_put(struct pmic_pdphy *pmic_pdphy);
> +
> +int qcom_pmic_pdphy_set_roles(struct pmic_pdphy *pmic_pdphy,
> + bool power_role_src,
> + bool data_role_host);
> +
> +int qcom_pmic_pdphy_set_pd_rx(struct pmic_pdphy *pmic_pdphy, bool on);
> +
> +int qcom_pmic_pdphy_pd_transmit(struct pmic_pdphy *pmic_pdphy,
> + enum tcpm_transmit_type type,
> + const struct pd_message *msg,
> + unsigned int negotiated_rev);
> +
> +#endif /* __QCOM_PMIC_PDPHY_H__ */
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> new file mode 100644
> index 0000000000000..7b6f6100af949
> --- /dev/null
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> @@ -0,0 +1,637 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2023, Linaro Ltd. All rights reserved.
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +#include <linux/usb/tcpm.h>
> +#include <linux/usb/typec_mux.h>
> +#include <linux/workqueue.h>
> +#include <dt-bindings/usb/typec/qcom,pmic-typec.h>
> +#include "qcom_pmic_typec.h"
> +
> +#define PMIC_TYPEC_MAX_IRQS 0x08
> +
> +struct pmic_typec_irq_params {
> + int virq;
> + char *irq_name;
> +};
> +
> +struct pmic_typec_resources {
> + unsigned int nr_irqs;
> + struct pmic_typec_irq_params irq_params[PMIC_TYPEC_MAX_IRQS];
> +};
> +
> +struct pmic_typec_irq_data {
> + int virq;
> + int irq;
> + struct pmic_typec *pmic_typec;
> +};
> +
> +struct pmic_typec {
> + struct device *dev;
> + struct tcpm_port *tcpm_port;
> + struct regmap *regmap;
> + u32 base;
> + unsigned int nr_irqs;
> + struct pmic_typec_irq_data *irq_data;
> +
> + struct regulator *vdd_vbus;
> +
> + int cc;
> + bool debouncing_cc;
> + struct delayed_work cc_debounce_dwork;
> +
> + spinlock_t lock; /* Register atomicity */
> +};
> +
> +static const char * const typec_cc_status_name[] = {
> + [TYPEC_CC_OPEN] = "Open",
> + [TYPEC_CC_RA] = "Ra",
> + [TYPEC_CC_RD] = "Rd",
> + [TYPEC_CC_RP_DEF] = "Rp-def",
> + [TYPEC_CC_RP_1_5] = "Rp-1.5",
> + [TYPEC_CC_RP_3_0] = "Rp-3.0",
> +};
> +
> +static const char *rp_unknown = "unknown";
> +
> +static const char *cc_to_name(enum typec_cc_status cc)
> +{
> + if (cc > TYPEC_CC_RP_3_0)
> + return rp_unknown;
> +
> + return typec_cc_status_name[cc];
> +}
> +
> +static const char * const rp_sel_name[] = {
> + [TYPEC_SRC_RP_SEL_80UA] = "Rp-def-80uA",
> + [TYPEC_SRC_RP_SEL_180UA] = "Rp-1.5-180uA",
> + [TYPEC_SRC_RP_SEL_330UA] = "Rp-3.0-330uA",
> +};
> +
> +static const char *rp_sel_to_name(int rp_sel)
> +{
> + if (rp_sel > TYPEC_SRC_RP_SEL_330UA)
> + return rp_unknown;
> +
> + return rp_sel_name[rp_sel];
> +}
> +
> +#define misc_to_cc(msic) !!(misc & CC_ORIENTATION) ? "cc1" : "cc2"
> +#define misc_to_vconn(msic) !!(misc & CC_ORIENTATION) ? "cc2" : "cc1"
> +
> +static void qcom_pmic_typec_cc_debounce(struct work_struct *work)
> +{
> + struct pmic_typec *pmic_typec =
> + container_of(work, struct pmic_typec, cc_debounce_dwork.work);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&pmic_typec->lock, flags);
> + pmic_typec->debouncing_cc = false;
> + spin_unlock_irqrestore(&pmic_typec->lock, flags);
> +
> + dev_dbg(pmic_typec->dev, "Debounce cc complete\n");
> +}
> +
> +static irqreturn_t pmic_typec_isr(int irq, void *dev_id)
> +{
> + struct pmic_typec_irq_data *irq_data = dev_id;
> + struct pmic_typec *pmic_typec = irq_data->pmic_typec;
> + u32 misc_stat;
> + bool vbus_change = false;
> + bool cc_change = false;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_typec->lock, flags);
> +
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MISC_STATUS_REG,
> + &misc_stat);
> + if (ret)
> + goto done;
> +
> + switch (irq_data->virq) {
> + case PMIC_TYPEC_VBUS_IRQ:
> + /* Incoming vbus assert/de-assert detect */
> + vbus_change = true;
> + break;
> + case PMIC_TYPEC_CC_STATE_IRQ:
> + if (!pmic_typec->debouncing_cc)
> + cc_change = true;
> + break;
> + case PMIC_TYPEC_ATTACH_DETACH_IRQ:
> + if (!pmic_typec->debouncing_cc)
> + cc_change = true;
> + break;
> + }
> +
> +done:
> + spin_unlock_irqrestore(&pmic_typec->lock, flags);
> +
> + if (vbus_change)
> + tcpm_vbus_change(pmic_typec->tcpm_port);
> +
> + if (cc_change)
> + tcpm_cc_change(pmic_typec->tcpm_port);
> +
> + return IRQ_HANDLED;
> +}
> +
> +int qcom_pmic_typec_get_vbus(struct pmic_typec *pmic_typec)
> +{
> + struct device *dev = pmic_typec->dev;
> + unsigned int misc;
> + int ret;
> +
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MISC_STATUS_REG,
> + &misc);
> + if (ret)
> + misc = 0;
> +
> + dev_dbg(dev, "get_vbus: 0x%08x detect %d\n", misc, !!(misc & TYPEC_VBUS_DETECT));
> +
> + return !!(misc & TYPEC_VBUS_DETECT);
> +}
> +
> +int qcom_pmic_typec_set_vbus(struct pmic_typec *pmic_typec, bool on)
> +{
> + u32 sm_stat;
> + u32 val;
> + int ret;
> +
> + if (on) {
> + ret = regulator_enable(pmic_typec->vdd_vbus);
> + if (ret)
> + return ret;
> +
> + val = TYPEC_SM_VBUS_VSAFE5V;
> + } else {
> + ret = regulator_disable(pmic_typec->vdd_vbus);
> + if (ret)
> + return ret;
> +
> + val = TYPEC_SM_VBUS_VSAFE0V;
> + }
> +
> + /* Poll waiting for transition to required vSafe5V or vSafe0V */
> + ret = regmap_read_poll_timeout(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_SM_STATUS_REG,
> + sm_stat, sm_stat & val,
> + 100, 250000);
This statement isn't very useful and will case a error,
After I remove it, usb-c works well. What's about dropping this statement?

[ 63.030672] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 63.030702] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 1
[ 63.030895] xhci-hcd xhci-hcd.1.auto: hcc params 0x0230ffe5 hci version 0x110 quirks 0x0000000000010010
[ 63.030926] xhci-hcd xhci-hcd.1.auto: irq 168, io mem 0x0a600000
[ 63.031043] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 63.031054] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 2
[ 63.031063] xhci-hcd xhci-hcd.1.auto: Host supports USB 3.1 Enhanced SuperSpeed
[ 63.031835] hub 1-0:1.0: USB hub found
[ 63.031863] hub 1-0:1.0: 1 port detected
[ 63.032151] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 63.032690] hub 2-0:1.0: USB hub found
[ 63.032713] hub 2-0:1.0: 1 port detected
[ 63.168912] qcom,pmic-typec c440000.spmi:pmic@2:typec@1500: vbus vsafe5v fail
[ 63.169185] xhci-hcd xhci-hcd.1.auto: remove, state 1
[ 63.169195] usb usb2: USB disconnect, device number 1
[ 63.178808] xhci-hcd xhci-hcd.1.auto: USB bus 2 deregistered
[ 63.178825] xhci-hcd xhci-hcd.1.auto: remove, state 1
[ 63.178832] usb usb1: USB disconnect, device number 1
[ 63.182114] hub 1-0:1.0: activate --> -19
[ 63.182791] xhci-hcd xhci-hcd.1.auto: USB bus 1 deregistered
> + if (ret)
> + dev_err(pmic_typec->dev, "vbus vsafe%dv fail\n", on ? 5 : 0);
> +
> + return ret;
> +}
> +
> +int qcom_pmic_typec_get_cc(struct pmic_typec *pmic_typec,
> + enum typec_cc_status *cc1,
> + enum typec_cc_status *cc2)
> +{
> + struct device *dev = pmic_typec->dev;
> + unsigned int misc, val;
> + bool attached;
> + int ret = 0;
> +
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MISC_STATUS_REG, &misc);
> + if (ret)
> + goto done;
> +
> + attached = !!(misc & CC_ATTACHED);
> +
> + if (pmic_typec->debouncing_cc) {
> + ret = -EBUSY;
> + goto done;
> + }
> +
> + *cc1 = TYPEC_CC_OPEN;
> + *cc2 = TYPEC_CC_OPEN;
> +
> + if (!(attached))
> + goto done;
> +
> + if (misc & SNK_SRC_MODE) {
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_SRC_STATUS_REG,
> + &val);
> + if (ret)
> + goto done;
> + switch (val & DETECTED_SRC_TYPE_MASK) {
> + case SRC_RD_OPEN:
> + val = TYPEC_CC_RD;
> + break;
> + case SRC_RD_RA_VCONN:
> + val = TYPEC_CC_RD;
> + *cc1 = TYPEC_CC_RA;
> + *cc2 = TYPEC_CC_RA;
> + break;
> + default:
> + dev_warn(dev, "unexpected src status %.2x\n", val);
> + val = TYPEC_CC_RD;
> + break;
> + }
> + } else {
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_SNK_STATUS_REG,
> + &val);
> + if (ret)
> + goto done;
> + switch (val & DETECTED_SNK_TYPE_MASK) {
> + case SNK_RP_STD:
> + val = TYPEC_CC_RP_DEF;
> + break;
> + case SNK_RP_1P5:
> + val = TYPEC_CC_RP_1_5;
> + break;
> + case SNK_RP_3P0:
> + val = TYPEC_CC_RP_3_0;
> + break;
> + default:
> + dev_warn(dev, "unexpected snk status %.2x\n", val);
> + val = TYPEC_CC_RP_DEF;
> + break;
> + }
> + val = TYPEC_CC_RP_DEF;
> + }
> +
> + if (misc & CC_ORIENTATION)
> + *cc2 = val;
> + else
> + *cc1 = val;
> +
> +done:
> + dev_dbg(dev, "get_cc: misc 0x%08x cc1 0x%08x %s cc2 0x%08x %s attached %d cc=%s\n",
> + misc, *cc1, cc_to_name(*cc1), *cc2, cc_to_name(*cc2), attached,
> + misc_to_cc(misc));
> +
> + return ret;
> +}
> +
> +static void qcom_pmic_set_cc_debounce(struct pmic_typec *pmic_typec)
> +{
> + pmic_typec->debouncing_cc = true;
> + schedule_delayed_work(&pmic_typec->cc_debounce_dwork,
> + msecs_to_jiffies(2));
> +}
> +
> +int qcom_pmic_typec_set_cc(struct pmic_typec *pmic_typec,
> + enum typec_cc_status cc)
> +{
> + struct device *dev = pmic_typec->dev;
> + unsigned int mode, currsrc;
> + unsigned int misc;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_typec->lock, flags);
> +
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MISC_STATUS_REG,
> + &misc);
> + if (ret)
> + goto done;
> +
> + mode = EN_SRC_ONLY;
> +
> + switch (cc) {
> + case TYPEC_CC_OPEN:
> + currsrc = TYPEC_SRC_RP_SEL_80UA;
> + break;
> + case TYPEC_CC_RP_DEF:
> + currsrc = TYPEC_SRC_RP_SEL_80UA;
> + break;
> + case TYPEC_CC_RP_1_5:
> + currsrc = TYPEC_SRC_RP_SEL_180UA;
> + break;
> + case TYPEC_CC_RP_3_0:
> + currsrc = TYPEC_SRC_RP_SEL_330UA;
> + break;
> + case TYPEC_CC_RD:
> + currsrc = TYPEC_SRC_RP_SEL_80UA;
> + mode = EN_SNK_ONLY;
> + break;
> + default:
> + dev_warn(dev, "unexpected set_cc %d\n", cc);
> + ret = -EINVAL;
> + goto done;
> + }
> +
> + if (mode == EN_SRC_ONLY) {
> + ret = regmap_write(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_CURRSRC_CFG_REG,
> + currsrc);
> + if (ret)
> + goto done;
> + }
> +
> + pmic_typec->cc = cc;
> + qcom_pmic_set_cc_debounce(pmic_typec);
> + ret = 0;
> +
> +done:
> + spin_unlock_irqrestore(&pmic_typec->lock, flags);
> +
> + dev_dbg(dev, "set_cc: currsrc=%x %s mode %s debounce %d attached %d cc=%s\n",
> + currsrc, rp_sel_to_name(currsrc),
> + mode == EN_SRC_ONLY ? "EN_SRC_ONLY" : "EN_SNK_ONLY",
> + pmic_typec->debouncing_cc, !!(misc & CC_ATTACHED),
> + misc_to_cc(misc));
> +
> + return ret;
> +}
> +
> +int qcom_pmic_typec_set_vconn(struct pmic_typec *pmic_typec, bool on)
> +{
> + struct device *dev = pmic_typec->dev;
> + unsigned int orientation, misc, mask, value;
> + unsigned long flags;
> + int ret;
> +
> + spin_lock_irqsave(&pmic_typec->lock, flags);
> +
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MISC_STATUS_REG, &misc);
> + if (ret)
> + goto done;
> +
> + /* Set VCONN on the inversion of the active CC channel */
> + orientation = (misc & CC_ORIENTATION) ? 0 : VCONN_EN_ORIENTATION;
> + if (on) {
> + mask = VCONN_EN_ORIENTATION | VCONN_EN_VALUE;
> + value = orientation | VCONN_EN_VALUE | VCONN_EN_SRC;
> + } else {
> + mask = VCONN_EN_VALUE;
> + value = 0;
> + }
> +
> + ret = regmap_update_bits(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_VCONN_CONTROL_REG,
> + mask, value);
> +done:
> + spin_unlock_irqrestore(&pmic_typec->lock, flags);
> +
> + dev_dbg(dev, "set_vconn: orientation %d control 0x%08x state %s cc %s vconn %s\n",
> + orientation, value, on ? "on" : "off", misc_to_vconn(misc), misc_to_cc(misc));
> +
> + return ret;
> +}
> +
> +int qcom_pmic_typec_start_toggling(struct pmic_typec *pmic_typec,
> + enum typec_port_type port_type,
> + enum typec_cc_status cc)
> +{
> + struct device *dev = pmic_typec->dev;
> + unsigned int misc;
> + u8 mode = 0;
> + unsigned long flags;
> + int ret;
> +
> + switch (port_type) {
> + case TYPEC_PORT_SRC:
> + mode = EN_SRC_ONLY;
> + break;
> + case TYPEC_PORT_SNK:
> + mode = EN_SNK_ONLY;
> + break;
> + case TYPEC_PORT_DRP:
> + mode = EN_TRY_SNK;
> + break;
> + }
> +
> + spin_lock_irqsave(&pmic_typec->lock, flags);
> +
> + ret = regmap_read(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MISC_STATUS_REG, &misc);
> + if (ret)
> + goto done;
> +
> + dev_dbg(dev, "start_toggling: misc 0x%08x attached %d port_type %d current cc %d new %d\n",
> + misc, !!(misc & CC_ATTACHED), port_type, pmic_typec->cc, cc);
> +
> + qcom_pmic_set_cc_debounce(pmic_typec);
> +
> + /* force it to toggle at least once */
> + ret = regmap_write(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MODE_CFG_REG,
> + TYPEC_DISABLE_CMD);
> + if (ret)
> + goto done;
> +
> + ret = regmap_write(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MODE_CFG_REG,
> + mode);
> +done:
> + spin_unlock_irqrestore(&pmic_typec->lock, flags);
> +
> + return ret;
> +}
> +
> +#define TYPEC_INTR_EN_CFG_1_MASK \
> + (TYPEC_LEGACY_CABLE_INT_EN | \
> + TYPEC_NONCOMPLIANT_LEGACY_CABLE_INT_EN | \
> + TYPEC_TRYSOURCE_DETECT_INT_EN | \
> + TYPEC_TRYSINK_DETECT_INT_EN | \
> + TYPEC_CCOUT_DETACH_INT_EN | \
> + TYPEC_CCOUT_ATTACH_INT_EN | \
> + TYPEC_VBUS_DEASSERT_INT_EN | \
> + TYPEC_VBUS_ASSERT_INT_EN)
> +
> +#define TYPEC_INTR_EN_CFG_2_MASK \
> + (TYPEC_STATE_MACHINE_CHANGE_INT_EN | TYPEC_VBUS_ERROR_INT_EN | \
> + TYPEC_DEBOUNCE_DONE_INT_EN)
> +
> +int qcom_pmic_typec_init(struct pmic_typec *pmic_typec,
> + struct tcpm_port *tcpm_port)
> +{
> + int i;
> + int mask;
> + int ret;
> +
> + /* Configure interrupt sources */
> + ret = regmap_write(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_INTERRUPT_EN_CFG_1_REG,
> + TYPEC_INTR_EN_CFG_1_MASK);
> + if (ret)
> + goto done;
> +
> + ret = regmap_write(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_INTERRUPT_EN_CFG_2_REG,
> + TYPEC_INTR_EN_CFG_2_MASK);
> + if (ret)
> + goto done;
> +
> + /* start in TRY_SNK mode */
> + ret = regmap_write(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_MODE_CFG_REG, EN_TRY_SNK);
> + if (ret)
> + goto done;
> +
> + /* Configure VCONN for software control */
> + ret = regmap_update_bits(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_VCONN_CONTROL_REG,
> + VCONN_EN_SRC | VCONN_EN_VALUE, VCONN_EN_SRC);
> + if (ret)
> + goto done;
> +
> + /* Set CC threshold to 1.6 Volts | tPDdebounce = 10-20ms */
> + mask = SEL_SRC_UPPER_REF | USE_TPD_FOR_EXITING_ATTACHSRC;
> + ret = regmap_update_bits(pmic_typec->regmap,
> + pmic_typec->base + TYPEC_EXIT_STATE_CFG_REG,
> + mask, mask);
> + if (ret)
> + goto done;
> +
> + pmic_typec->tcpm_port = tcpm_port;
> +
> + for (i = 0; i < pmic_typec->nr_irqs; i++)
> + enable_irq(pmic_typec->irq_data[i].irq);
> +
> +done:
> + return ret;
> +}
> +
> +void qcom_pmic_typec_put(struct pmic_typec *pmic_typec)
> +{
> + put_device(pmic_typec->dev);
> +}
> +
> +static int qcom_pmic_typec_probe(struct platform_device *pdev)
> +{
> + struct pmic_typec *pmic_typec;
> + struct device *dev = &pdev->dev;
> + const struct pmic_typec_resources *res;
> + struct pmic_typec_irq_data *irq_data;
> + int i, ret, irq;
> + u32 reg;
> +
> + ret = device_property_read_u32(dev, "reg", &reg);
> + if (ret < 0) {
> + dev_err(dev, "missing base address\n");
> + return ret;
> + }
> +
> + res = of_device_get_match_data(dev);
> + if (!res)
> + return -ENODEV;
> +
> + if (!res->nr_irqs || res->nr_irqs > PMIC_TYPEC_MAX_IRQS)
> + return -EINVAL;
> +
> + pmic_typec = devm_kzalloc(dev, sizeof(*pmic_typec), GFP_KERNEL);
> + if (!pmic_typec)
> + return -ENOMEM;
> +
> + irq_data = devm_kzalloc(dev, sizeof(*irq_data) * res->nr_irqs,
> + GFP_KERNEL);
> + if (!irq_data)
> + return -ENOMEM;
> +
> + pmic_typec->vdd_vbus = devm_regulator_get(dev, "vdd-vbus");
> + if (IS_ERR(pmic_typec->vdd_vbus))
> + return PTR_ERR(pmic_typec->vdd_vbus);
> +
> + pmic_typec->dev = dev;
> + pmic_typec->base = reg;
> + pmic_typec->nr_irqs = res->nr_irqs;
> + pmic_typec->irq_data = irq_data;
> + spin_lock_init(&pmic_typec->lock);
> + INIT_DELAYED_WORK(&pmic_typec->cc_debounce_dwork,
> + qcom_pmic_typec_cc_debounce);
> +
> + pmic_typec->regmap = dev_get_regmap(dev->parent, NULL);
> + if (!pmic_typec->regmap) {
> + dev_err(dev, "Failed to get regmap\n");
> + return -ENODEV;
> + }
> +
> + irq = platform_get_irq(pdev, 0);
> + if (irq < 0)
> + return irq;
> +
> + platform_set_drvdata(pdev, pmic_typec);
> +
> + for (i = 0; i < res->nr_irqs; i++, irq_data++) {
> + irq = platform_get_irq_byname(pdev,
> + res->irq_params[i].irq_name);
> + if (irq < 0)
> + return irq;
> +
> + irq_data->pmic_typec = pmic_typec;
> + irq_data->irq = irq;
> + irq_data->virq = res->irq_params[i].virq;
> + ret = devm_request_threaded_irq(dev, irq, NULL, pmic_typec_isr,
> + IRQF_ONESHOT | IRQF_NO_AUTOEN,
> + res->irq_params[i].irq_name,
> + irq_data);
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static struct pmic_typec_resources pm8150b_typec_res = {
> + .irq_params = {
> + {
> + .irq_name = "vpd-detect",
> + .virq = PMIC_TYPEC_VPD_IRQ,
> + },
> +
> + {
> + .irq_name = "cc-state-change",
> + .virq = PMIC_TYPEC_CC_STATE_IRQ,
> + },
> + {
> + .irq_name = "vconn-oc",
> + .virq = PMIC_TYPEC_VCONN_OC_IRQ,
> + },
> +
> + {
> + .irq_name = "vbus-change",
> + .virq = PMIC_TYPEC_VBUS_IRQ,
> + },
> +
> + {
> + .irq_name = "attach-detach",
> + .virq = PMIC_TYPEC_ATTACH_DETACH_IRQ,
> + },
> + {
> + .irq_name = "legacy-cable-detect",
> + .virq = PMIC_TYPEC_LEGACY_CABLE_IRQ,
> + },
> +
> + {
> + .irq_name = "try-snk-src-detect",
> + .virq = PMIC_TYPEC_TRY_SNK_SRC_IRQ,
> + },
> + },
> + .nr_irqs = 7,
> +};
> +
> +static const struct of_device_id qcom_pmic_typec_table[] = {
> + { .compatible = "qcom,pm8150b-typec", .data = &pm8150b_typec_res },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, qcom_pmic_typec_table);
> +
> +struct platform_driver qcom_pmic_typec_platform_driver = {
> + .driver = {
> + .name = "qcom,pmic-typec",
> + .of_match_table = qcom_pmic_typec_table,
> + },
> + .probe = qcom_pmic_typec_probe,
> +};
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.h b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.h
> new file mode 100644
> index 0000000000000..1428325954795
> --- /dev/null
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.h
> @@ -0,0 +1,163 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023, Linaro Ltd. All rights reserved.
> + */
> +#ifndef __QCOM_PMIC_TYPEC_H__
> +#define __QCOM_PMIC_TYPEC_H__
> +
> +#include <linux/usb/tcpm.h>
> +
> +#define TYPEC_SNK_STATUS_REG 0x06
> +#define DETECTED_SNK_TYPE_MASK GENMASK(6, 0)
> +#define SNK_DAM_MASK GENMASK(6, 4)
> +#define SNK_DAM_500MA BIT(6)
> +#define SNK_DAM_1500MA BIT(5)
> +#define SNK_DAM_3000MA BIT(4)
> +#define SNK_RP_STD BIT(3)
> +#define SNK_RP_1P5 BIT(2)
> +#define SNK_RP_3P0 BIT(1)
> +#define SNK_RP_SHORT BIT(0)
> +
> +#define TYPEC_SRC_STATUS_REG 0x08
> +#define DETECTED_SRC_TYPE_MASK GENMASK(4, 0)
> +#define SRC_HIGH_BATT BIT(5)
> +#define SRC_DEBUG_ACCESS BIT(4)
> +#define SRC_RD_OPEN BIT(3)
> +#define SRC_RD_RA_VCONN BIT(2)
> +#define SRC_RA_OPEN BIT(1)
> +#define AUDIO_ACCESS_RA_RA BIT(0)
> +
> +#define TYPEC_STATE_MACHINE_STATUS_REG 0x09
> +#define TYPEC_ATTACH_DETACH_STATE BIT(5)
> +
> +#define TYPEC_SM_STATUS_REG 0x0A
> +#define TYPEC_SM_VBUS_VSAFE5V BIT(5)
> +#define TYPEC_SM_VBUS_VSAFE0V BIT(6)
> +#define TYPEC_SM_USBIN_LT_LV BIT(7)
> +
> +#define TYPEC_MISC_STATUS_REG 0x0B
> +#define TYPEC_WATER_DETECTION_STATUS BIT(7)
> +#define SNK_SRC_MODE BIT(6)
> +#define TYPEC_VBUS_DETECT BIT(5)
> +#define TYPEC_VBUS_ERROR_STATUS BIT(4)
> +#define TYPEC_DEBOUNCE_DONE BIT(3)
> +#define CC_ORIENTATION BIT(1)
> +#define CC_ATTACHED BIT(0)
> +
> +#define LEGACY_CABLE_STATUS_REG 0x0D
> +#define TYPEC_LEGACY_CABLE_STATUS BIT(1)
> +#define TYPEC_NONCOMP_LEGACY_CABLE_STATUS BIT(0)
> +
> +#define TYPEC_U_USB_STATUS_REG 0x0F
> +#define U_USB_GROUND_NOVBUS BIT(6)
> +#define U_USB_GROUND BIT(4)
> +#define U_USB_FMB1 BIT(3)
> +#define U_USB_FLOAT1 BIT(2)
> +#define U_USB_FMB2 BIT(1)
> +#define U_USB_FLOAT2 BIT(0)
> +
> +#define TYPEC_MODE_CFG_REG 0x44
> +#define TYPEC_TRY_MODE_MASK GENMASK(4, 3)
> +#define EN_TRY_SNK BIT(4)
> +#define EN_TRY_SRC BIT(3)
> +#define TYPEC_POWER_ROLE_CMD_MASK GENMASK(2, 0)
> +#define EN_SRC_ONLY BIT(2)
> +#define EN_SNK_ONLY BIT(1)
> +#define TYPEC_DISABLE_CMD BIT(0)
> +
> +#define TYPEC_VCONN_CONTROL_REG 0x46
> +#define VCONN_EN_ORIENTATION BIT(2)
> +#define VCONN_EN_VALUE BIT(1)
> +#define VCONN_EN_SRC BIT(0)
> +
> +#define TYPEC_CCOUT_CONTROL_REG 0x48
> +#define TYPEC_CCOUT_BUFFER_EN BIT(2)
> +#define TYPEC_CCOUT_VALUE BIT(1)
> +#define TYPEC_CCOUT_SRC BIT(0)
> +
> +#define DEBUG_ACCESS_SRC_CFG_REG 0x4C
> +#define EN_UNORIENTED_DEBUG_ACCESS_SRC BIT(0)
> +
> +#define TYPE_C_CRUDE_SENSOR_CFG_REG 0x4e
> +#define EN_SRC_CRUDE_SENSOR BIT(1)
> +#define EN_SNK_CRUDE_SENSOR BIT(0)
> +
> +#define TYPEC_EXIT_STATE_CFG_REG 0x50
> +#define BYPASS_VSAFE0V_DURING_ROLE_SWAP BIT(3)
> +#define SEL_SRC_UPPER_REF BIT(2)
> +#define USE_TPD_FOR_EXITING_ATTACHSRC BIT(1)
> +#define EXIT_SNK_BASED_ON_CC BIT(0)
> +
> +#define TYPEC_CURRSRC_CFG_REG 0x52
> +#define TYPEC_SRC_RP_SEL_330UA BIT(1)
> +#define TYPEC_SRC_RP_SEL_180UA BIT(0)
> +#define TYPEC_SRC_RP_SEL_80UA 0
> +#define TYPEC_SRC_RP_SEL_MASK GENMASK(1, 0)
> +
> +#define TYPEC_INTERRUPT_EN_CFG_1_REG 0x5E
> +#define TYPEC_LEGACY_CABLE_INT_EN BIT(7)
> +#define TYPEC_NONCOMPLIANT_LEGACY_CABLE_INT_EN BIT(6)
> +#define TYPEC_TRYSOURCE_DETECT_INT_EN BIT(5)
> +#define TYPEC_TRYSINK_DETECT_INT_EN BIT(4)
> +#define TYPEC_CCOUT_DETACH_INT_EN BIT(3)
> +#define TYPEC_CCOUT_ATTACH_INT_EN BIT(2)
> +#define TYPEC_VBUS_DEASSERT_INT_EN BIT(1)
> +#define TYPEC_VBUS_ASSERT_INT_EN BIT(0)
> +
> +#define TYPEC_INTERRUPT_EN_CFG_2_REG 0x60
> +#define TYPEC_SRC_BATT_HPWR_INT_EN BIT(6)
> +#define MICRO_USB_STATE_CHANGE_INT_EN BIT(5)
> +#define TYPEC_STATE_MACHINE_CHANGE_INT_EN BIT(4)
> +#define TYPEC_DEBUG_ACCESS_DETECT_INT_EN BIT(3)
> +#define TYPEC_WATER_DETECTION_INT_EN BIT(2)
> +#define TYPEC_VBUS_ERROR_INT_EN BIT(1)
> +#define TYPEC_DEBOUNCE_DONE_INT_EN BIT(0)
> +
> +#define TYPEC_DEBOUNCE_OPTION_REG 0x62
> +#define REDUCE_TCCDEBOUNCE_TO_2MS BIT(2)
> +
> +#define TYPE_C_SBU_CFG_REG 0x6A
> +#define SEL_SBU1_ISRC_VAL 0x04
> +#define SEL_SBU2_ISRC_VAL 0x01
> +
> +#define TYPEC_U_USB_CFG_REG 0x70
> +#define EN_MICRO_USB_FACTORY_MODE BIT(1)
> +#define EN_MICRO_USB_MODE BIT(0)
> +
> +#define TYPEC_PMI632_U_USB_WATER_PROTECTION_CFG_REG 0x72
> +
> +#define TYPEC_U_USB_WATER_PROTECTION_CFG_REG 0x73
> +#define EN_MICRO_USB_WATER_PROTECTION BIT(4)
> +#define MICRO_USB_DETECTION_ON_TIME_CFG_MASK GENMASK(3, 2)
> +#define MICRO_USB_DETECTION_PERIOD_CFG_MASK GENMASK(1, 0)
> +
> +#define TYPEC_PMI632_MICRO_USB_MODE_REG 0x73
> +#define MICRO_USB_MODE_ONLY BIT(0)
> +
> +struct pmic_typec;
> +extern struct platform_driver qcom_pmic_typec_platform_driver;
> +
> +int qcom_pmic_typec_init(struct pmic_typec *pmic_typec,
> + struct tcpm_port *tcpm_port);
> +
> +void qcom_pmic_typec_put(struct pmic_typec *pmic_typec);
> +
> +int qcom_pmic_typec_get_cc(struct pmic_typec *pmic_typec,
> + enum typec_cc_status *cc1,
> + enum typec_cc_status *cc2);
> +
> +int qcom_pmic_typec_set_cc(struct pmic_typec *pmic_typec,
> + enum typec_cc_status cc);
> +
> +int qcom_pmic_typec_get_vbus(struct pmic_typec *pmic_typec);
> +
> +int qcom_pmic_typec_set_vconn(struct pmic_typec *pmic_typec, bool on);
> +
> +int qcom_pmic_typec_start_toggling(struct pmic_typec *pmic_typec,
> + enum typec_port_type port_type,
> + enum typec_cc_status cc);
> +
> +int qcom_pmic_typec_set_vbus(struct pmic_typec *pmic_typec, bool on);
> +
> +#endif /* __QCOM_PMIC_TYPE_C_H__ */
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_virt_tcpm.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_virt_tcpm.c
> new file mode 100644
> index 0000000000000..91544b4b59439
> --- /dev/null
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_virt_tcpm.c
> @@ -0,0 +1,326 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2023, Linaro Ltd. All rights reserved.
> + */
> +
> +#include <linux/err.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_graph.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +#include <linux/usb/role.h>
> +#include <linux/usb/tcpm.h>
> +#include <linux/usb/typec_mux.h>
> +#include "qcom_pmic_pdphy.h"
> +#include "qcom_pmic_typec.h"
> +
> +struct pmic_virt_tcpm {
> + struct device *dev;
> + struct pmic_typec *pmic_typec;
> + struct pmic_pdphy *pmic_pdphy;
> + struct tcpm_port *tcpm_port;
> + struct tcpc_dev tcpc;
> + bool vbus_enabled;
> + struct mutex lock; /* VBUS state serialization */
> +};
> +
> +#define tcpc_to_tcpm(_tcpc_) container_of(_tcpc_, struct pmic_virt_tcpm, tcpc)
> +
> +static int qcom_pmic_virt_tcpm_get_vbus(struct tcpc_dev *tcpc)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> + int ret;
> +
> + mutex_lock(&tcpm->lock);
> + ret = tcpm->vbus_enabled || qcom_pmic_typec_get_vbus(tcpm->pmic_typec);
> + mutex_unlock(&tcpm->lock);
> +
> + return ret;
> +}
> +
> +static int qcom_pmic_virt_tcpm_set_vbus(struct tcpc_dev *tcpc, bool on,
> + bool sink)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> + int ret = 0;
> +
> + mutex_lock(&tcpm->lock);
> + if (tcpm->vbus_enabled == on)
> + goto done;
> +
> + ret = qcom_pmic_typec_set_vbus(tcpm->pmic_typec, on);
> + if (ret)
> + goto done;
> +
> + tcpm->vbus_enabled = on;
> + tcpm_vbus_change(tcpm->tcpm_port);
> +
> +done:
> + dev_dbg(tcpm->dev, "set_vbus set: %d result %d\n", on, ret);
> + mutex_unlock(&tcpm->lock);
> +
> + return ret;
> +}
> +
> +static int qcom_pmic_virt_tcpm_set_vconn(struct tcpc_dev *tcpc, bool on)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_typec_set_vconn(tcpm->pmic_typec, on);
> +}
> +
> +static int qcom_pmic_virt_tcpm_get_cc(struct tcpc_dev *tcpc,
> + enum typec_cc_status *cc1,
> + enum typec_cc_status *cc2)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_typec_get_cc(tcpm->pmic_typec, cc1, cc2);
> +}
> +
> +static int qcom_pmic_virt_tcpm_set_cc(struct tcpc_dev *tcpc,
> + enum typec_cc_status cc)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_typec_set_cc(tcpm->pmic_typec, cc);
> +}
> +
> +static int qcom_pmic_virt_tcpm_set_polarity(struct tcpc_dev *tcpc,
> + enum typec_cc_polarity pol)
> +{
> + /* Polarity is set separately by phy-qcom-qmp.c */
> + return 0;
> +}
> +
> +static int qcom_pmic_virt_tcpm_start_toggling(struct tcpc_dev *tcpc,
> + enum typec_port_type port_type,
> + enum typec_cc_status cc)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_typec_start_toggling(tcpm->pmic_typec, port_type, cc);
> +}
> +
> +static int qcom_pmic_virt_tcpm_set_roles(struct tcpc_dev *tcpc, bool attached,
> + enum typec_role power_role,
> + enum typec_data_role data_role)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_pdphy_set_roles(tcpm->pmic_pdphy, data_role,
> + power_role);
> +}
> +
> +static int qcom_pmic_virt_tcpm_set_pd_rx(struct tcpc_dev *tcpc, bool on)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_pdphy_set_pd_rx(tcpm->pmic_pdphy, on);
> +}
> +
> +static int qcom_pmic_virt_tcpm_pd_transmit(struct tcpc_dev *tcpc,
> + enum tcpm_transmit_type type,
> + const struct pd_message *msg,
> + unsigned int negotiated_rev)
> +{
> + struct pmic_virt_tcpm *tcpm = tcpc_to_tcpm(tcpc);
> +
> + return qcom_pmic_pdphy_pd_transmit(tcpm->pmic_pdphy, type, msg,
> + negotiated_rev);
> +}
> +
> +static struct platform_device
> +*qcom_pmic_virt_tcpm_get_pdev(struct device *dev, const char *property_name)
> +{
> + struct device_node *np;
> + struct platform_device *pdev;
> + const __be32 *prop;
> +
> + prop = of_get_property(dev->of_node, property_name, NULL);
> + if (!prop) {
> + dev_err(dev, "required '%s' property missing\n", property_name);
> + return ERR_PTR(-EINVAL);
> + }
> +
> + np = of_find_node_by_phandle(be32_to_cpup(prop));
> + if (!np) {
> + dev_err(dev, "could not find '%s' node\n", property_name);
> + return ERR_PTR(-ENODEV);
> + }
> +
> + pdev = of_find_device_by_node(np);
> + of_node_put(np);
> +
> + if (pdev)
> + return pdev;
> +
> + return ERR_PTR(-ENODEV);
> +}
> +
> +static int qcom_pmic_virt_tcpm_init(struct tcpc_dev *tcpc)
> +{
> + return 0;
> +}
> +
> +static int qcom_pmic_virt_tcpm_probe(struct platform_device *pdev)
> +{
> + struct pmic_virt_tcpm *tcpm;
> + struct device *dev = &pdev->dev;
> + struct platform_device *typec_pdev;
> + struct platform_device *pdphy_pdev;
> + int ret;
> +
> + tcpm = devm_kzalloc(dev, sizeof(*tcpm), GFP_KERNEL);
> + if (!tcpm)
> + return -ENOMEM;
> +
> + tcpm->dev = dev;
> + tcpm->tcpc.init = qcom_pmic_virt_tcpm_init;
> + tcpm->tcpc.get_vbus = qcom_pmic_virt_tcpm_get_vbus;
> + tcpm->tcpc.set_vbus = qcom_pmic_virt_tcpm_set_vbus;
> + tcpm->tcpc.set_cc = qcom_pmic_virt_tcpm_set_cc;
> + tcpm->tcpc.get_cc = qcom_pmic_virt_tcpm_get_cc;
> + tcpm->tcpc.set_polarity = qcom_pmic_virt_tcpm_set_polarity;
> + tcpm->tcpc.set_vconn = qcom_pmic_virt_tcpm_set_vconn;
> + tcpm->tcpc.start_toggling = qcom_pmic_virt_tcpm_start_toggling;
> + tcpm->tcpc.set_pd_rx = qcom_pmic_virt_tcpm_set_pd_rx;
> + tcpm->tcpc.set_roles = qcom_pmic_virt_tcpm_set_roles;
> + tcpm->tcpc.pd_transmit = qcom_pmic_virt_tcpm_pd_transmit;
> +
> + mutex_init(&tcpm->lock);
> + platform_set_drvdata(pdev, tcpm);
> +
> + ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
> + if (ret) {
> + dev_err(dev, "Populating child devices fail\n");
> + return ret;
> + };
> +
> + typec_pdev = qcom_pmic_virt_tcpm_get_pdev(dev, "qcom,pmic-typec");
> + if (IS_ERR(typec_pdev)) {
> + dev_err(dev, "Error linking typec endpoint\n");
> + return PTR_ERR(typec_pdev);
> + }
> +
> + tcpm->pmic_typec = platform_get_drvdata(typec_pdev);
> + if (!tcpm->pmic_typec) {
> + ret = -EPROBE_DEFER;
> + goto put_typec_pdev;
> + }
> +
> + pdphy_pdev = qcom_pmic_virt_tcpm_get_pdev(dev, "qcom,pmic-pdphy");
> + if (IS_ERR(pdphy_pdev)) {
> + dev_err(dev, "Error linking pdphy endpoint\n");
> + ret = PTR_ERR(pdphy_pdev);
> + goto put_typec_pdev;
> + }
> +
> + tcpm->pmic_pdphy = platform_get_drvdata(pdphy_pdev);
> + if (!tcpm->pmic_pdphy) {
> + ret = -EPROBE_DEFER;
> + goto put_pdphy_dev;
> + }
> +
> + tcpm->tcpc.fwnode = device_get_named_child_node(tcpm->dev, "connector");
> + if (IS_ERR(tcpm->tcpc.fwnode))
> + return PTR_ERR(tcpm->tcpc.fwnode);
> +
> + tcpm->tcpm_port = tcpm_register_port(tcpm->dev, &tcpm->tcpc);
> + if (IS_ERR(tcpm->tcpm_port)) {
> + ret = PTR_ERR(tcpm->tcpm_port);
> + goto fwnode_remove;
> + }
> +
> + ret = qcom_pmic_pdphy_init(tcpm->pmic_pdphy, tcpm->tcpm_port);
> + if (ret)
> + goto fwnode_remove;
> +
> + ret = qcom_pmic_typec_init(tcpm->pmic_typec, tcpm->tcpm_port);
> + if (ret)
> + goto fwnode_remove;
> +
> + return 0;
> +
> +fwnode_remove:
> + fwnode_remove_software_node(tcpm->tcpc.fwnode);
> +
> +put_pdphy_dev:
> + put_device(&pdphy_pdev->dev);
> +
> +put_typec_pdev:
> + put_device(&typec_pdev->dev);
> +
> + return ret;
> +}
> +
> +static int qcom_pmic_virt_tcpm_remove(struct platform_device *pdev)
> +{
> + struct pmic_virt_tcpm *tcpm = platform_get_drvdata(pdev);
> +
> + tcpm_unregister_port(tcpm->tcpm_port);
> + fwnode_remove_software_node(tcpm->tcpc.fwnode);
> + qcom_pmic_pdphy_put(tcpm->pmic_pdphy);
> + qcom_pmic_typec_put(tcpm->pmic_typec);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id qcom_pmic_virt_tcpm_table[] = {
> + { .compatible = "qcom,pmic-virt-tcpm" },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, qcom_pmic_virt_tcpm_table);
> +
> +static struct platform_driver qcom_pmic_virt_tcpm_platform_driver = {
> + .driver = {
> + .name = "qcom,pmic-tcpm",
> + .of_match_table = qcom_pmic_virt_tcpm_table,
> + },
> + .probe = qcom_pmic_virt_tcpm_probe,
> + .remove = qcom_pmic_virt_tcpm_remove,
> +};
> +
> +static int __init qcom_pmic_virt_tcpm_module_init(void)
> +{
> + int ret;
> +
> + ret = platform_driver_register(&qcom_pmic_typec_platform_driver);
> + if (ret)
> + return ret;
> +
> + ret = platform_driver_register(&qcom_pmic_pdphy_platform_driver);
> + if (ret)
> + goto unregister_typec;
> +
> + ret = platform_driver_register(&qcom_pmic_virt_tcpm_platform_driver);
> + if (ret)
> + goto unregister_pdphy;
> +
> + return 0;
> +
> +unregister_pdphy:
> + platform_driver_unregister(&qcom_pmic_pdphy_platform_driver);
> +
> +unregister_typec:
> + platform_driver_unregister(&qcom_pmic_typec_platform_driver);
> +
> + return ret;
> +}
> +module_init(qcom_pmic_virt_tcpm_module_init);
> +
> +static void __exit qcom_pmic_virt_tcpm_module_exit(void)
> +{
> + platform_driver_unregister(&qcom_pmic_virt_tcpm_platform_driver);
> + platform_driver_unregister(&qcom_pmic_pdphy_platform_driver);
> + platform_driver_unregister(&qcom_pmic_typec_platform_driver);
> +}
> +module_exit(qcom_pmic_virt_tcpm_module_exit);
> +
> +MODULE_DESCRIPTION("QCOM PMIC USB Type-C Port Manager Driver");
> +MODULE_LICENSE("GPL");
> --
> 2.39.2
>
>