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usb: typec: qcom-pmic-typec: allow different implementations for the PD PHY 

Rework Qualcomm PMIC TCPM driver to allow different platform-specific
implementations of the PD PHY interface. While majority of platforms
has the same of register for the PD PHY, some obscure ones (PMI632) do
not have real PD PHY support. Add proper interface between the main
module and the PD PHY backend to allow switching the PD PHY
implementation.

Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Acked-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240113-pmi632-typec-v2-7-182d9aa0a5b3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Baryshkov 2024-01-13 22:55:50 +02:00 committed by Greg Kroah-Hartman
parent 65145a03d6
commit d2f9b93de0
5 changed files with 171 additions and 195 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
View File

@ -20,26 +20,15 @@
#include <drm/bridge/aux-bridge.h>
#include "qcom_pmic_typec.h"
#include "qcom_pmic_typec_pdphy.h"
#include "qcom_pmic_typec_port.h"
struct pmic_typec_resources {
struct pmic_typec_pdphy_resources *pdphy_res;
const struct pmic_typec_pdphy_resources *pdphy_res;
struct pmic_typec_port_resources *port_res;
};
struct pmic_typec {
struct device *dev;
struct tcpm_port *tcpm_port;
struct tcpc_dev tcpc;
struct pmic_typec_pdphy *pmic_typec_pdphy;
struct pmic_typec_port *pmic_typec_port;
bool vbus_enabled;
struct mutex lock; /* VBUS state serialization */
};
#define tcpc_to_tcpm(_tcpc_) container_of(_tcpc_, struct pmic_typec, tcpc)
static int qcom_pmic_typec_get_vbus(struct tcpc_dev *tcpc)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
@ -116,34 +105,6 @@ static int qcom_pmic_typec_start_toggling(struct tcpc_dev *tcpc,
port_type, cc);
}
static int qcom_pmic_typec_set_roles(struct tcpc_dev *tcpc, bool attached,
enum typec_role power_role,
enum typec_data_role data_role)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
return qcom_pmic_typec_pdphy_set_roles(tcpm->pmic_typec_pdphy,
power_role, data_role);
}
static int qcom_pmic_typec_set_pd_rx(struct tcpc_dev *tcpc, bool on)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
return qcom_pmic_typec_pdphy_set_pd_rx(tcpm->pmic_typec_pdphy, on);
}
static int qcom_pmic_typec_pd_transmit(struct tcpc_dev *tcpc,
enum tcpm_transmit_type type,
const struct pd_message *msg,
unsigned int negotiated_rev)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
return qcom_pmic_typec_pdphy_pd_transmit(tcpm->pmic_typec_pdphy, type,
msg, negotiated_rev);
}
static int qcom_pmic_typec_init(struct tcpc_dev *tcpc)
{
return 0;
@ -177,9 +138,6 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev)
tcpm->tcpc.set_polarity = qcom_pmic_typec_set_polarity;
tcpm->tcpc.set_vconn = qcom_pmic_typec_set_vconn;
tcpm->tcpc.start_toggling = qcom_pmic_typec_start_toggling;
tcpm->tcpc.set_pd_rx = qcom_pmic_typec_set_pd_rx;
tcpm->tcpc.set_roles = qcom_pmic_typec_set_roles;
tcpm->tcpc.pd_transmit = qcom_pmic_typec_pd_transmit;
regmap = dev_get_regmap(dev->parent, NULL);
if (!regmap) {
@ -195,16 +153,12 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev)
if (IS_ERR(tcpm->pmic_typec_port))
return PTR_ERR(tcpm->pmic_typec_port);
tcpm->pmic_typec_pdphy = qcom_pmic_typec_pdphy_alloc(dev);
if (IS_ERR(tcpm->pmic_typec_pdphy))
return PTR_ERR(tcpm->pmic_typec_pdphy);
ret = qcom_pmic_typec_port_probe(pdev, tcpm->pmic_typec_port,
res->port_res, regmap, base[0]);
if (ret)
return ret;
ret = qcom_pmic_typec_pdphy_probe(pdev, tcpm->pmic_typec_pdphy,
ret = qcom_pmic_typec_pdphy_probe(pdev, tcpm,
res->pdphy_res, regmap, base[1]);
if (ret)
return ret;
@ -231,8 +185,7 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev)
if (ret)
goto fwnode_remove;
ret = qcom_pmic_typec_pdphy_start(tcpm->pmic_typec_pdphy,
tcpm->tcpm_port);
ret = tcpm->pdphy_start(tcpm, tcpm->tcpm_port);
if (ret)
goto fwnode_remove;
@ -248,46 +201,12 @@ static void qcom_pmic_typec_remove(struct platform_device *pdev)
{
struct pmic_typec *tcpm = platform_get_drvdata(pdev);
qcom_pmic_typec_pdphy_stop(tcpm->pmic_typec_pdphy);
tcpm->pdphy_stop(tcpm);
qcom_pmic_typec_port_stop(tcpm->pmic_typec_port);
tcpm_unregister_port(tcpm->tcpm_port);
fwnode_remove_software_node(tcpm->tcpc.fwnode);
}
static struct pmic_typec_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 struct pmic_typec_port_resources pm8150b_port_res = {
.irq_params = {
{

25
drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.h Normal file
View File

@ -0,0 +1,25 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2023, Linaro Ltd. All rights reserved.
*/
#ifndef __QCOM_PMIC_TYPEC_H__
#define __QCOM_PMIC_TYPEC_H__
struct pmic_typec {
struct device *dev;
struct tcpm_port *tcpm_port;
struct tcpc_dev tcpc;
struct pmic_typec_pdphy *pmic_typec_pdphy;
struct pmic_typec_port *pmic_typec_port;
bool vbus_enabled;
struct mutex lock; /* VBUS state serialization */
int (*pdphy_start)(struct pmic_typec *tcpm,
struct tcpm_port *tcpm_port);
void (*pdphy_stop)(struct pmic_typec *tcpm);
};
#define tcpc_to_tcpm(_tcpc_) container_of(_tcpc_, struct pmic_typec, tcpc)
#endif

153
drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c
View File

@ -14,8 +14,74 @@
#include <linux/slab.h>
#include <linux/usb/pd.h>
#include <linux/usb/tcpm.h>
#include "qcom_pmic_typec.h"
#include "qcom_pmic_typec_pdphy.h"
/* 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 */
/* Interrupt numbers */
#define PMIC_PDPHY_SIG_TX_IRQ 0x0
#define PMIC_PDPHY_SIG_RX_IRQ 0x1
#define PMIC_PDPHY_MSG_TX_IRQ 0x2
#define PMIC_PDPHY_MSG_RX_IRQ 0x3
#define PMIC_PDPHY_MSG_TX_FAIL_IRQ 0x4
#define PMIC_PDPHY_MSG_TX_DISCARD_IRQ 0x5
#define PMIC_PDPHY_MSG_RX_DISCARD_IRQ 0x6
#define PMIC_PDPHY_FR_SWAP_IRQ 0x7
struct pmic_typec_pdphy_irq_data {
int virq;
int irq;
@ -231,11 +297,13 @@ done:
return ret;
}
int qcom_pmic_typec_pdphy_pd_transmit(struct pmic_typec_pdphy *pmic_typec_pdphy,
enum tcpm_transmit_type type,
const struct pd_message *msg,
unsigned int negotiated_rev)
static int qcom_pmic_typec_pdphy_pd_transmit(struct tcpc_dev *tcpc,
enum tcpm_transmit_type type,
const struct pd_message *msg,
unsigned int negotiated_rev)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
struct pmic_typec_pdphy *pmic_typec_pdphy = tcpm->pmic_typec_pdphy;
struct device *dev = pmic_typec_pdphy->dev;
int ret;
@ -336,8 +404,10 @@ static irqreturn_t qcom_pmic_typec_pdphy_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
int qcom_pmic_typec_pdphy_set_pd_rx(struct pmic_typec_pdphy *pmic_typec_pdphy, bool on)
static int qcom_pmic_typec_pdphy_set_pd_rx(struct tcpc_dev *tcpc, bool on)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
struct pmic_typec_pdphy *pmic_typec_pdphy = tcpm->pmic_typec_pdphy;
unsigned long flags;
int ret;
@ -353,10 +423,12 @@ int qcom_pmic_typec_pdphy_set_pd_rx(struct pmic_typec_pdphy *pmic_typec_pdphy, b
return ret;
}
int qcom_pmic_typec_pdphy_set_roles(struct pmic_typec_pdphy *pmic_typec_pdphy,
enum typec_role power_role,
enum typec_data_role data_role)
static int qcom_pmic_typec_pdphy_set_roles(struct tcpc_dev *tcpc, bool attached,
enum typec_role power_role,
enum typec_data_role data_role)
{
struct pmic_typec *tcpm = tcpc_to_tcpm(tcpc);
struct pmic_typec_pdphy *pmic_typec_pdphy = tcpm->pmic_typec_pdphy;
struct device *dev = pmic_typec_pdphy->dev;
unsigned long flags;
int ret;
@ -437,9 +509,10 @@ done:
return ret;
}
int qcom_pmic_typec_pdphy_start(struct pmic_typec_pdphy *pmic_typec_pdphy,
struct tcpm_port *tcpm_port)
static int qcom_pmic_typec_pdphy_start(struct pmic_typec *tcpm,
struct tcpm_port *tcpm_port)
{
struct pmic_typec_pdphy *pmic_typec_pdphy = tcpm->pmic_typec_pdphy;
int i;
int ret;
@ -459,8 +532,9 @@ int qcom_pmic_typec_pdphy_start(struct pmic_typec_pdphy *pmic_typec_pdphy,
return 0;
}
void qcom_pmic_typec_pdphy_stop(struct pmic_typec_pdphy *pmic_typec_pdphy)
static void qcom_pmic_typec_pdphy_stop(struct pmic_typec *tcpm)
{
struct pmic_typec_pdphy *pmic_typec_pdphy = tcpm->pmic_typec_pdphy;
int i;
for (i = 0; i < pmic_typec_pdphy->nr_irqs; i++)
@ -471,21 +545,21 @@ void qcom_pmic_typec_pdphy_stop(struct pmic_typec_pdphy *pmic_typec_pdphy)
regulator_disable(pmic_typec_pdphy->vdd_pdphy);
}
struct pmic_typec_pdphy *qcom_pmic_typec_pdphy_alloc(struct device *dev)
{
return devm_kzalloc(dev, sizeof(struct pmic_typec_pdphy), GFP_KERNEL);
}
int qcom_pmic_typec_pdphy_probe(struct platform_device *pdev,
struct pmic_typec_pdphy *pmic_typec_pdphy,
struct pmic_typec_pdphy_resources *res,
struct pmic_typec *tcpm,
const struct pmic_typec_pdphy_resources *res,
struct regmap *regmap,
u32 base)
{
struct pmic_typec_pdphy *pmic_typec_pdphy;
struct device *dev = &pdev->dev;
struct pmic_typec_pdphy_irq_data *irq_data;
int i, ret, irq;
pmic_typec_pdphy = devm_kzalloc(dev, sizeof(*pmic_typec_pdphy), GFP_KERNEL);
if (!pmic_typec_pdphy)
return -ENOMEM;
if (!res->nr_irqs || res->nr_irqs > PMIC_PDPHY_MAX_IRQS)
return -EINVAL;
@ -524,5 +598,48 @@ int qcom_pmic_typec_pdphy_probe(struct platform_device *pdev,
return ret;
}
tcpm->pmic_typec_pdphy = pmic_typec_pdphy;
tcpm->tcpc.set_pd_rx = qcom_pmic_typec_pdphy_set_pd_rx;
tcpm->tcpc.set_roles = qcom_pmic_typec_pdphy_set_roles;
tcpm->tcpc.pd_transmit = qcom_pmic_typec_pdphy_pd_transmit;
tcpm->pdphy_start = qcom_pmic_typec_pdphy_start;
tcpm->pdphy_stop = qcom_pmic_typec_pdphy_stop;
return 0;
}
const struct pmic_typec_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,
};

93
drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.h
View File

@ -8,74 +8,6 @@
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/usb/tcpm.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 */
/* Interrupt numbers */
#define PMIC_PDPHY_SIG_TX_IRQ 0x0
#define PMIC_PDPHY_SIG_RX_IRQ 0x1
#define PMIC_PDPHY_MSG_TX_IRQ 0x2
#define PMIC_PDPHY_MSG_RX_IRQ 0x3
#define PMIC_PDPHY_MSG_TX_FAIL_IRQ 0x4
#define PMIC_PDPHY_MSG_TX_DISCARD_IRQ 0x5
#define PMIC_PDPHY_MSG_RX_DISCARD_IRQ 0x6
#define PMIC_PDPHY_FR_SWAP_IRQ 0x7
/* Resources */
#define PMIC_PDPHY_MAX_IRQS 0x08
@ -87,34 +19,17 @@ struct pmic_typec_pdphy_irq_params {
struct pmic_typec_pdphy_resources {
unsigned int nr_irqs;
struct pmic_typec_pdphy_irq_params irq_params[PMIC_PDPHY_MAX_IRQS];
const struct pmic_typec_pdphy_irq_params irq_params[PMIC_PDPHY_MAX_IRQS];
};
/* API */
struct pmic_typec_pdphy;
struct pmic_typec_pdphy *qcom_pmic_typec_pdphy_alloc(struct device *dev);
extern const struct pmic_typec_pdphy_resources pm8150b_pdphy_res;
int qcom_pmic_typec_pdphy_probe(struct platform_device *pdev,
struct pmic_typec_pdphy *pmic_typec_pdphy,
struct pmic_typec_pdphy_resources *res,
struct pmic_typec *tcpm,
const struct pmic_typec_pdphy_resources *res,
struct regmap *regmap,
u32 base);
int qcom_pmic_typec_pdphy_start(struct pmic_typec_pdphy *pmic_typec_pdphy,
struct tcpm_port *tcpm_port);
void qcom_pmic_typec_pdphy_stop(struct pmic_typec_pdphy *pmic_typec_pdphy);
int qcom_pmic_typec_pdphy_set_roles(struct pmic_typec_pdphy *pmic_typec_pdphy,
enum typec_role power_role,
enum typec_data_role data_role);
int qcom_pmic_typec_pdphy_set_pd_rx(struct pmic_typec_pdphy *pmic_typec_pdphy, bool on);
int qcom_pmic_typec_pdphy_pd_transmit(struct pmic_typec_pdphy *pmic_typec_pdphy,
enum tcpm_transmit_type type,
const struct pd_message *msg,
unsigned int negotiated_rev);
#endif /* __QCOM_PMIC_TYPEC_PDPHY_H__ */

4
drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.h
View File

@ -3,8 +3,8 @@
* 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__
#ifndef __QCOM_PMIC_TYPEC_PORT_H__
#define __QCOM_PMIC_TYPEC_PORT_H__
#include <linux/platform_device.h>
#include <linux/usb/tcpm.h>