usb: typec: add driver for Intel Whiskey Cove PMIC USB Type-C PHY
This adds driver for the USB Type-C PHY on Intel WhiskeyCove PMIC which is available on some of the Intel Broxton SoC based platforms. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-and-Tested-by: Felipe Balbi <felipe.balbi@linux.intel.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus
Greg Kroah-Hartman
parent
fab9288428
commit
d2061f9cc3
|
|
@ -4,4 +4,19 @@ menu "USB Power Delivery and Type-C drivers"
|
||||||
config TYPEC
|
config TYPEC
|
||||||
tristate
|
tristate
|
||||||
|
|
||||||
|
config TYPEC_WCOVE
|
||||||
|
tristate "Intel WhiskeyCove PMIC USB Type-C PHY driver"
|
||||||
|
depends on ACPI
|
||||||
|
depends on INTEL_SOC_PMIC
|
||||||
|
depends on INTEL_PMC_IPC
|
||||||
|
depends on BXT_WC_PMIC_OPREGION
|
||||||
|
select TYPEC
|
||||||
|
help
|
||||||
|
This driver adds support for USB Type-C detection on Intel Broxton
|
||||||
|
platforms that have Intel Whiskey Cove PMIC. The driver can detect the
|
||||||
|
role and cable orientation.
|
||||||
|
|
||||||
|
To compile this driver as module, choose M here: the module will be
|
||||||
|
called typec_wcove
|
||||||
|
|
||||||
endmenu
|
endmenu
|
||||||
|
|
|
||||||
|
|
@ -1 +1,2 @@
|
||||||
obj-$(CONFIG_TYPEC) += typec.o
|
obj-$(CONFIG_TYPEC) += typec.o
|
||||||
|
obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,377 @@
|
||||||
|
/**
|
||||||
|
* typec_wcove.c - WhiskeyCove PMIC USB Type-C PHY driver
|
||||||
|
*
|
||||||
|
* Copyright (C) 2017 Intel Corporation
|
||||||
|
* Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License version 2 as
|
||||||
|
* published by the Free Software Foundation.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/acpi.h>
|
||||||
|
#include <linux/module.h>
|
||||||
|
#include <linux/interrupt.h>
|
||||||
|
#include <linux/usb/typec.h>
|
||||||
|
#include <linux/platform_device.h>
|
||||||
|
#include <linux/mfd/intel_soc_pmic.h>
|
||||||
|
|
||||||
|
/* Register offsets */
|
||||||
|
#define WCOVE_CHGRIRQ0 0x4e09
|
||||||
|
#define WCOVE_PHYCTRL 0x5e07
|
||||||
|
|
||||||
|
#define USBC_CONTROL1 0x7001
|
||||||
|
#define USBC_CONTROL2 0x7002
|
||||||
|
#define USBC_CONTROL3 0x7003
|
||||||
|
#define USBC_CC1_CTRL 0x7004
|
||||||
|
#define USBC_CC2_CTRL 0x7005
|
||||||
|
#define USBC_STATUS1 0x7007
|
||||||
|
#define USBC_STATUS2 0x7008
|
||||||
|
#define USBC_STATUS3 0x7009
|
||||||
|
#define USBC_IRQ1 0x7015
|
||||||
|
#define USBC_IRQ2 0x7016
|
||||||
|
#define USBC_IRQMASK1 0x7017
|
||||||
|
#define USBC_IRQMASK2 0x7018
|
||||||
|
|
||||||
|
/* Register bits */
|
||||||
|
|
||||||
|
#define USBC_CONTROL1_MODE_DRP(r) (((r) & ~0x7) | 4)
|
||||||
|
|
||||||
|
#define USBC_CONTROL2_UNATT_SNK BIT(0)
|
||||||
|
#define USBC_CONTROL2_UNATT_SRC BIT(1)
|
||||||
|
#define USBC_CONTROL2_DIS_ST BIT(2)
|
||||||
|
|
||||||
|
#define USBC_CONTROL3_PD_DIS BIT(1)
|
||||||
|
|
||||||
|
#define USBC_CC_CTRL_VCONN_EN BIT(1)
|
||||||
|
|
||||||
|
#define USBC_STATUS1_DET_ONGOING BIT(6)
|
||||||
|
#define USBC_STATUS1_RSLT(r) ((r) & 0xf)
|
||||||
|
#define USBC_RSLT_NOTHING 0
|
||||||
|
#define USBC_RSLT_SRC_DEFAULT 1
|
||||||
|
#define USBC_RSLT_SRC_1_5A 2
|
||||||
|
#define USBC_RSLT_SRC_3_0A 3
|
||||||
|
#define USBC_RSLT_SNK 4
|
||||||
|
#define USBC_RSLT_DEBUG_ACC 5
|
||||||
|
#define USBC_RSLT_AUDIO_ACC 6
|
||||||
|
#define USBC_RSLT_UNDEF 15
|
||||||
|
#define USBC_STATUS1_ORIENT(r) (((r) >> 4) & 0x3)
|
||||||
|
#define USBC_ORIENT_NORMAL 1
|
||||||
|
#define USBC_ORIENT_REVERSE 2
|
||||||
|
|
||||||
|
#define USBC_STATUS2_VBUS_REQ BIT(5)
|
||||||
|
|
||||||
|
#define USBC_IRQ1_ADCDONE1 BIT(2)
|
||||||
|
#define USBC_IRQ1_OVERTEMP BIT(1)
|
||||||
|
#define USBC_IRQ1_SHORT BIT(0)
|
||||||
|
|
||||||
|
#define USBC_IRQ2_CC_CHANGE BIT(7)
|
||||||
|
#define USBC_IRQ2_RX_PD BIT(6)
|
||||||
|
#define USBC_IRQ2_RX_HR BIT(5)
|
||||||
|
#define USBC_IRQ2_RX_CR BIT(4)
|
||||||
|
#define USBC_IRQ2_TX_SUCCESS BIT(3)
|
||||||
|
#define USBC_IRQ2_TX_FAIL BIT(2)
|
||||||
|
|
||||||
|
#define USBC_IRQMASK1_ALL (USBC_IRQ1_ADCDONE1 | USBC_IRQ1_OVERTEMP | \
|
||||||
|
USBC_IRQ1_SHORT)
|
||||||
|
|
||||||
|
#define USBC_IRQMASK2_ALL (USBC_IRQ2_CC_CHANGE | USBC_IRQ2_RX_PD | \
|
||||||
|
USBC_IRQ2_RX_HR | USBC_IRQ2_RX_CR | \
|
||||||
|
USBC_IRQ2_TX_SUCCESS | USBC_IRQ2_TX_FAIL)
|
||||||
|
|
||||||
|
struct wcove_typec {
|
||||||
|
struct mutex lock; /* device lock */
|
||||||
|
struct device *dev;
|
||||||
|
struct regmap *regmap;
|
||||||
|
struct typec_port *port;
|
||||||
|
struct typec_capability cap;
|
||||||
|
struct typec_partner *partner;
|
||||||
|
};
|
||||||
|
|
||||||
|
enum wcove_typec_func {
|
||||||
|
WCOVE_FUNC_DRIVE_VBUS = 1,
|
||||||
|
WCOVE_FUNC_ORIENTATION,
|
||||||
|
WCOVE_FUNC_ROLE,
|
||||||
|
WCOVE_FUNC_DRIVE_VCONN,
|
||||||
|
};
|
||||||
|
|
||||||
|
enum wcove_typec_orientation {
|
||||||
|
WCOVE_ORIENTATION_NORMAL,
|
||||||
|
WCOVE_ORIENTATION_REVERSE,
|
||||||
|
};
|
||||||
|
|
||||||
|
enum wcove_typec_role {
|
||||||
|
WCOVE_ROLE_HOST,
|
||||||
|
WCOVE_ROLE_DEVICE,
|
||||||
|
};
|
||||||
|
|
||||||
|
static uuid_le uuid = UUID_LE(0x482383f0, 0x2876, 0x4e49,
|
||||||
|
0x86, 0x85, 0xdb, 0x66, 0x21, 0x1a, 0xf0, 0x37);
|
||||||
|
|
||||||
|
static int wcove_typec_func(struct wcove_typec *wcove,
|
||||||
|
enum wcove_typec_func func, int param)
|
||||||
|
{
|
||||||
|
union acpi_object *obj;
|
||||||
|
union acpi_object tmp;
|
||||||
|
union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp);
|
||||||
|
|
||||||
|
tmp.type = ACPI_TYPE_INTEGER;
|
||||||
|
tmp.integer.value = param;
|
||||||
|
|
||||||
|
obj = acpi_evaluate_dsm(ACPI_HANDLE(wcove->dev), uuid.b, 1, func,
|
||||||
|
&argv4);
|
||||||
|
if (!obj) {
|
||||||
|
dev_err(wcove->dev, "%s: failed to evaluate _DSM\n", __func__);
|
||||||
|
return -EIO;
|
||||||
|
}
|
||||||
|
|
||||||
|
ACPI_FREE(obj);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static irqreturn_t wcove_typec_irq(int irq, void *data)
|
||||||
|
{
|
||||||
|
enum typec_role role = TYPEC_SINK;
|
||||||
|
struct typec_partner_desc partner;
|
||||||
|
struct wcove_typec *wcove = data;
|
||||||
|
unsigned int cc1_ctrl;
|
||||||
|
unsigned int cc2_ctrl;
|
||||||
|
unsigned int cc_irq1;
|
||||||
|
unsigned int cc_irq2;
|
||||||
|
unsigned int status1;
|
||||||
|
unsigned int status2;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
mutex_lock(&wcove->lock);
|
||||||
|
|
||||||
|
ret = regmap_read(wcove->regmap, USBC_IRQ1, &cc_irq1);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = regmap_read(wcove->regmap, USBC_IRQ2, &cc_irq2);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = regmap_read(wcove->regmap, USBC_STATUS1, &status1);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = regmap_read(wcove->regmap, USBC_STATUS2, &status2);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1_ctrl);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
ret = regmap_read(wcove->regmap, USBC_CC2_CTRL, &cc2_ctrl);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
if (cc_irq1) {
|
||||||
|
if (cc_irq1 & USBC_IRQ1_OVERTEMP)
|
||||||
|
dev_err(wcove->dev, "VCONN Switch Over Temperature!\n");
|
||||||
|
if (cc_irq1 & USBC_IRQ1_SHORT)
|
||||||
|
dev_err(wcove->dev, "VCONN Switch Short Circuit!\n");
|
||||||
|
ret = regmap_write(wcove->regmap, USBC_IRQ1, cc_irq1);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (cc_irq2) {
|
||||||
|
ret = regmap_write(wcove->regmap, USBC_IRQ2, cc_irq2);
|
||||||
|
if (ret)
|
||||||
|
goto err;
|
||||||
|
/*
|
||||||
|
* Ignoring any PD communication interrupts until the PD support
|
||||||
|
* is available
|
||||||
|
*/
|
||||||
|
if (cc_irq2 & ~USBC_IRQ2_CC_CHANGE) {
|
||||||
|
dev_WARN(wcove->dev, "USB PD handling missing\n");
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (status1 & USBC_STATUS1_DET_ONGOING)
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
if (USBC_STATUS1_RSLT(status1) == USBC_RSLT_NOTHING) {
|
||||||
|
if (wcove->partner) {
|
||||||
|
typec_unregister_partner(wcove->partner);
|
||||||
|
wcove->partner = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION,
|
||||||
|
WCOVE_ORIENTATION_NORMAL);
|
||||||
|
|
||||||
|
/* This makes sure the device controller is disconnected */
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_HOST);
|
||||||
|
|
||||||
|
/* Port to default role */
|
||||||
|
typec_set_data_role(wcove->port, TYPEC_DEVICE);
|
||||||
|
typec_set_pwr_role(wcove->port, TYPEC_SINK);
|
||||||
|
typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_USB);
|
||||||
|
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (wcove->partner)
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
switch (USBC_STATUS1_ORIENT(status1)) {
|
||||||
|
case USBC_ORIENT_NORMAL:
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION,
|
||||||
|
WCOVE_ORIENTATION_NORMAL);
|
||||||
|
break;
|
||||||
|
case USBC_ORIENT_REVERSE:
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION,
|
||||||
|
WCOVE_ORIENTATION_REVERSE);
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
memset(&partner, 0, sizeof(partner));
|
||||||
|
|
||||||
|
switch (USBC_STATUS1_RSLT(status1)) {
|
||||||
|
case USBC_RSLT_SRC_DEFAULT:
|
||||||
|
typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_USB);
|
||||||
|
break;
|
||||||
|
case USBC_RSLT_SRC_1_5A:
|
||||||
|
typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_1_5A);
|
||||||
|
break;
|
||||||
|
case USBC_RSLT_SRC_3_0A:
|
||||||
|
typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_3_0A);
|
||||||
|
break;
|
||||||
|
case USBC_RSLT_SNK:
|
||||||
|
role = TYPEC_SOURCE;
|
||||||
|
break;
|
||||||
|
case USBC_RSLT_DEBUG_ACC:
|
||||||
|
partner.accessory = TYPEC_ACCESSORY_DEBUG;
|
||||||
|
break;
|
||||||
|
case USBC_RSLT_AUDIO_ACC:
|
||||||
|
partner.accessory = TYPEC_ACCESSORY_AUDIO;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
dev_WARN(wcove->dev, "%s Undefined result\n", __func__);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (role == TYPEC_SINK) {
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_DEVICE);
|
||||||
|
typec_set_data_role(wcove->port, TYPEC_DEVICE);
|
||||||
|
typec_set_pwr_role(wcove->port, TYPEC_SINK);
|
||||||
|
} else {
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_HOST);
|
||||||
|
typec_set_pwr_role(wcove->port, TYPEC_SOURCE);
|
||||||
|
typec_set_data_role(wcove->port, TYPEC_HOST);
|
||||||
|
}
|
||||||
|
|
||||||
|
wcove->partner = typec_register_partner(wcove->port, &partner);
|
||||||
|
if (!wcove->partner)
|
||||||
|
dev_err(wcove->dev, "failed register partner\n");
|
||||||
|
out:
|
||||||
|
/* If either CC pins is requesting VCONN, we turn it on */
|
||||||
|
if ((cc1_ctrl & USBC_CC_CTRL_VCONN_EN) ||
|
||||||
|
(cc2_ctrl & USBC_CC_CTRL_VCONN_EN))
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, true);
|
||||||
|
else
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, false);
|
||||||
|
|
||||||
|
/* Relying on the FSM to know when we need to drive VBUS. */
|
||||||
|
wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VBUS,
|
||||||
|
!!(status2 & USBC_STATUS2_VBUS_REQ));
|
||||||
|
err:
|
||||||
|
/* REVISIT: Clear WhiskeyCove CHGR Type-C interrupt */
|
||||||
|
regmap_write(wcove->regmap, WCOVE_CHGRIRQ0, BIT(5));
|
||||||
|
|
||||||
|
mutex_unlock(&wcove->lock);
|
||||||
|
return IRQ_HANDLED;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int wcove_typec_probe(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
|
||||||
|
struct wcove_typec *wcove;
|
||||||
|
unsigned int val;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
wcove = devm_kzalloc(&pdev->dev, sizeof(*wcove), GFP_KERNEL);
|
||||||
|
if (!wcove)
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
mutex_init(&wcove->lock);
|
||||||
|
wcove->dev = &pdev->dev;
|
||||||
|
wcove->regmap = pmic->regmap;
|
||||||
|
|
||||||
|
ret = regmap_irq_get_virq(pmic->irq_chip_data_level2,
|
||||||
|
platform_get_irq(pdev, 0));
|
||||||
|
if (ret < 0)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
ret = devm_request_threaded_irq(&pdev->dev, ret, NULL,
|
||||||
|
wcove_typec_irq, IRQF_ONESHOT,
|
||||||
|
"wcove_typec", wcove);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
if (!acpi_check_dsm(ACPI_HANDLE(&pdev->dev), uuid.b, 0, 0x1f)) {
|
||||||
|
dev_err(&pdev->dev, "Missing _DSM functions\n");
|
||||||
|
return -ENODEV;
|
||||||
|
}
|
||||||
|
|
||||||
|
wcove->cap.type = TYPEC_PORT_DRP;
|
||||||
|
wcove->cap.revision = USB_TYPEC_REV_1_1;
|
||||||
|
wcove->cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
|
||||||
|
|
||||||
|
/* Make sure the PD PHY is disabled until USB PD is available */
|
||||||
|
regmap_read(wcove->regmap, USBC_CONTROL3, &val);
|
||||||
|
regmap_write(wcove->regmap, USBC_CONTROL3, val | USBC_CONTROL3_PD_DIS);
|
||||||
|
|
||||||
|
/* DRP mode without accessory support */
|
||||||
|
regmap_read(wcove->regmap, USBC_CONTROL1, &val);
|
||||||
|
regmap_write(wcove->regmap, USBC_CONTROL1, USBC_CONTROL1_MODE_DRP(val));
|
||||||
|
|
||||||
|
wcove->port = typec_register_port(&pdev->dev, &wcove->cap);
|
||||||
|
if (!wcove->port)
|
||||||
|
return -ENODEV;
|
||||||
|
|
||||||
|
/* Unmask everything */
|
||||||
|
regmap_read(wcove->regmap, USBC_IRQMASK1, &val);
|
||||||
|
regmap_write(wcove->regmap, USBC_IRQMASK1, val & ~USBC_IRQMASK1_ALL);
|
||||||
|
regmap_read(wcove->regmap, USBC_IRQMASK2, &val);
|
||||||
|
regmap_write(wcove->regmap, USBC_IRQMASK2, val & ~USBC_IRQMASK2_ALL);
|
||||||
|
|
||||||
|
platform_set_drvdata(pdev, wcove);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int wcove_typec_remove(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct wcove_typec *wcove = platform_get_drvdata(pdev);
|
||||||
|
unsigned int val;
|
||||||
|
|
||||||
|
/* Mask everything */
|
||||||
|
regmap_read(wcove->regmap, USBC_IRQMASK1, &val);
|
||||||
|
regmap_write(wcove->regmap, USBC_IRQMASK1, val | USBC_IRQMASK1_ALL);
|
||||||
|
regmap_read(wcove->regmap, USBC_IRQMASK2, &val);
|
||||||
|
regmap_write(wcove->regmap, USBC_IRQMASK2, val | USBC_IRQMASK2_ALL);
|
||||||
|
|
||||||
|
typec_unregister_partner(wcove->partner);
|
||||||
|
typec_unregister_port(wcove->port);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static struct platform_driver wcove_typec_driver = {
|
||||||
|
.driver = {
|
||||||
|
.name = "bxt_wcove_usbc",
|
||||||
|
},
|
||||||
|
.probe = wcove_typec_probe,
|
||||||
|
.remove = wcove_typec_remove,
|
||||||
|
};
|
||||||
|
|
||||||
|
module_platform_driver(wcove_typec_driver);
|
||||||
|
|
||||||
|
MODULE_AUTHOR("Intel Corporation");
|
||||||
|
MODULE_LICENSE("GPL v2");
|
||||||
|
MODULE_DESCRIPTION("WhiskeyCove PMIC USB Type-C PHY driver");
|
||||||
|
MODULE_ALIAS("platform:bxt_wcove_usbc");
|
||||||
Loading…
Reference in New Issue