---
drivers/usb/typec/ucsi/displayport.c | 24 +-
drivers/usb/typec/ucsi/trace.h | 17 --
drivers/usb/typec/ucsi/ucsi.c | 346 +++------------------------
drivers/usb/typec/ucsi/ucsi.h | 41 ----
4 files changed, 43 insertions(+), 385 deletions(-)
diff --git a/drivers/usb/typec/ucsi/displayport.c b/drivers/usb/typec/ucsi/displayport.c
index d99700cb4dca..47424935bc81 100644
--- a/drivers/usb/typec/ucsi/displayport.c
+++ b/drivers/usb/typec/ucsi/displayport.c
@@ -48,6 +48,7 @@ struct ucsi_dp {
static int ucsi_displayport_enter(struct typec_altmode *alt)
{
struct ucsi_dp *dp = typec_altmode_get_drvdata(alt);
+ struct ucsi *ucsi = dp->con->ucsi;
struct ucsi_control ctrl;
u8 cur = 0;
int ret;
@@ -59,25 +60,21 @@ static int ucsi_displayport_enter(struct typec_altmode *alt)
dev_warn(&p->dev,
"firmware doesn't support alternate mode overriding\n");
- mutex_unlock(&dp->con->lock);
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ goto err_unlock;
}
UCSI_CMD_GET_CURRENT_CAM(ctrl, dp->con->num);
- ret = ucsi_send_command(dp->con->ucsi, &ctrl, &cur, sizeof(cur));
+ ret = ucsi_send_command(ucsi, command, &cur, sizeof(cur));
if (ret < 0) {
- if (dp->con->ucsi->ppm->data->version > 0x0100) {
- mutex_unlock(&dp->con->lock);
- return ret;
- }
+ if (ucsi->version > 0x0100)
+ goto err_unlock;
cur = 0xff;
}
if (cur != 0xff) {
- mutex_unlock(&dp->con->lock);
- if (dp->con->port_altmode[cur] == alt)
- return 0;
- return -EBUSY;
+ ret = dp->con->port_altmode[cur] == alt ? 0 : -EBUSY;
+ goto err_unlock;
}
/*
@@ -94,10 +91,11 @@ static int ucsi_displayport_enter(struct typec_altmode *alt)
dp->vdo_size = 1;
schedule_work(&dp->work);
-
+ ret = 0;
+err_unlock:
mutex_unlock(&dp->con->lock);
- return 0;
+ return ret;
}
static int ucsi_displayport_exit(struct typec_altmode *alt)
diff --git a/drivers/usb/typec/ucsi/trace.h b/drivers/usb/typec/ucsi/trace.h
index 783ec9c72055..6e3d510b236e 100644
--- a/drivers/usb/typec/ucsi/trace.h
+++ b/drivers/usb/typec/ucsi/trace.h
@@ -75,23 +75,6 @@ DEFINE_EVENT(ucsi_log_command, ucsi_reset_ppm,
TP_ARGS(ctrl, ret)
);
-DECLARE_EVENT_CLASS(ucsi_log_cci,
- TP_PROTO(u32 cci),
- TP_ARGS(cci),
- TP_STRUCT__entry(
- __field(u32, cci)
- ),
- TP_fast_assign(
- __entry->cci = cci;
- ),
- TP_printk("CCI=%08x %s", __entry->cci, ucsi_cci_str(__entry->cci))
-);
-
-DEFINE_EVENT(ucsi_log_cci, ucsi_notify,
- TP_PROTO(u32 cci),
- TP_ARGS(cci)
-);
-
DECLARE_EVENT_CLASS(ucsi_log_connector_status,
TP_PROTO(int port, struct ucsi_connector_status *status),
TP_ARGS(port, status),
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index dffc2cf8db6f..6462dadd7540 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -36,68 +36,6 @@
*/
#define UCSI_SWAP_TIMEOUT_MS 5000
-static inline int ucsi_sync(struct ucsi *ucsi)
-{
- if (ucsi->ppm && ucsi->ppm->sync)
- return ucsi->ppm->sync(ucsi->ppm);
- return 0;
-}
-
-static int ucsi_command(struct ucsi *ucsi, struct ucsi_control *ctrl)
-{
- int ret;
-
- trace_ucsi_command(ctrl);
-
- set_bit(COMMAND_PENDING, &ucsi->flags);
-
- ret = ucsi->ppm->cmd(ucsi->ppm, ctrl);
- if (ret)
- goto err_clear_flag;
-
- if (!wait_for_completion_timeout(&ucsi->complete,
- msecs_to_jiffies(UCSI_TIMEOUT_MS))) {
- dev_warn(ucsi->dev, "PPM NOT RESPONDING\n");
- ret = -ETIMEDOUT;
- }
-
-err_clear_flag:
- clear_bit(COMMAND_PENDING, &ucsi->flags);
-
- return ret;
-}
-
-static int ucsi_ack(struct ucsi *ucsi, u8 ack)
-{
- struct ucsi_control ctrl;
- int ret;
-
- trace_ucsi_ack(ack);
-
- set_bit(ACK_PENDING, &ucsi->flags);
-
- UCSI_CMD_ACK(ctrl, ack);
- ret = ucsi->ppm->cmd(ucsi->ppm, &ctrl);
- if (ret)
- goto out_clear_bit;
-
- /* Waiting for ACK with ACK CMD, but not with EVENT for now */
- if (ack == UCSI_ACK_EVENT)
- goto out_clear_bit;
-
- if (!wait_for_completion_timeout(&ucsi->complete,
- msecs_to_jiffies(UCSI_TIMEOUT_MS)))
- ret = -ETIMEDOUT;
-
-out_clear_bit:
- clear_bit(ACK_PENDING, &ucsi->flags);
-
- if (ret)
- dev_err(ucsi->dev, "%s: failed\n", __func__);
-
- return ret;
-}
-
static int ucsi_acknowledge_command(struct ucsi *ucsi)
{
u64 ctrl;
@@ -196,115 +134,26 @@ static int ucsi_exec_command(struct ucsi *ucsi, u64 cmd)
static int ucsi_run_command(struct ucsi *ucsi, struct ucsi_control *ctrl,
void *data, size_t size)
{
- struct ucsi_control _ctrl;
- u8 data_length;
- u16 error;
+ u8 length;
int ret;
- if (ucsi->ops) {
- ret = ucsi_exec_command(ucsi, ctrl->raw_cmd);
- if (ret < 0)
- return ret;
-
- data_length = ret;
+ ret = ucsi_exec_command(ucsi, ctrl->raw_cmd);
+ if (ret < 0)
+ return ret;
- if (data) {
- ret = ucsi->ops->read(ucsi, UCSI_MESSAGE_IN, data, size);
- if (ret)
- return ret;
- }
+ length = ret;
- ret = ucsi_acknowledge_command(ucsi);
+ if (data) {
+ ret = ucsi->ops->read(ucsi, UCSI_MESSAGE_IN, data, size);
if (ret)
return ret;
-
- return data_length;
}
- ret = ucsi_command(ucsi, ctrl);
+ ret = ucsi_acknowledge_command(ucsi);
if (ret)
- goto err;
-
- switch (ucsi->status) {
- case UCSI_IDLE:
- ret = ucsi_sync(ucsi);
- if (ret)
- dev_warn(ucsi->dev, "%s: sync failed\n", __func__);
-
- if (data)
- memcpy(data, ucsi->ppm->data->message_in, size);
-
- data_length = ucsi->ppm->data->cci.data_length;
-
- ret = ucsi_ack(ucsi, UCSI_ACK_CMD);
- if (!ret)
- ret = data_length;
- break;
- case UCSI_BUSY:
- /* The caller decides whether to cancel or not */
- ret = -EBUSY;
- break;
- case UCSI_ERROR:
- ret = ucsi_ack(ucsi, UCSI_ACK_CMD);
- if (ret)
- break;
-
- _ctrl.raw_cmd = 0;
- _ctrl.cmd.cmd = UCSI_GET_ERROR_STATUS;
- ret = ucsi_command(ucsi, &_ctrl);
- if (ret) {
- dev_err(ucsi->dev, "reading error failed!\n");
- break;
- }
-
- memcpy(&error, ucsi->ppm->data->message_in, sizeof(error));
-
- /* Something has really gone wrong */
- if (WARN_ON(ucsi->status == UCSI_ERROR)) {
- ret = -ENODEV;
- break;
- }
-
- ret = ucsi_ack(ucsi, UCSI_ACK_CMD);
- if (ret)
- break;
-
- switch (error) {
- case UCSI_ERROR_INCOMPATIBLE_PARTNER:
- ret = -EOPNOTSUPP;
- break;
- case UCSI_ERROR_CC_COMMUNICATION_ERR:
- ret = -ECOMM;
- break;
- case UCSI_ERROR_CONTRACT_NEGOTIATION_FAIL:
- ret = -EPROTO;
- break;
- case UCSI_ERROR_DEAD_BATTERY:
- dev_warn(ucsi->dev, "Dead battery condition!\n");
- ret = -EPERM;
- break;
- /* The following mean a bug in this driver */
- case UCSI_ERROR_INVALID_CON_NUM:
- case UCSI_ERROR_UNREGONIZED_CMD:
- case UCSI_ERROR_INVALID_CMD_ARGUMENT:
- dev_warn(ucsi->dev,
- "%s: possible UCSI driver bug - error 0x%x\n",
- __func__, error);
- ret = -EINVAL;
- break;
- default:
- dev_warn(ucsi->dev,
- "%s: error without status\n", __func__);
- ret = -EIO;
- break;
- }
- break;
- }
-
-err:
- trace_ucsi_run_command(ctrl, ret);
+ return ret;
- return ret;
+ return length;
}
int ucsi_send_command(struct ucsi *ucsi, struct ucsi_control *ctrl,
@@ -334,7 +183,7 @@ EXPORT_SYMBOL_GPL(ucsi_resume);
void ucsi_altmode_update_active(struct ucsi_connector *con)
{
const struct typec_altmode *altmode = NULL;
- struct ucsi_control ctrl;
+ u64 command;
int ret;
u8 cur;
int i;
@@ -342,7 +191,7 @@ void ucsi_altmode_update_active(struct ucsi_connector *con)
UCSI_CMD_GET_CURRENT_CAM(ctrl, con->num);
ret = ucsi_run_command(con->ucsi, &ctrl, &cur, sizeof(cur));
if (ret < 0) {
- if (con->ucsi->ppm->data->version > 0x0100) {
+ if (con->ucsi->version > 0x0100) {
dev_err(con->ucsi->dev,
"GET_CURRENT_CAM command failed\n");
return;
@@ -695,10 +544,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
if (con->status.change & UCSI_CONSTAT_PARTNER_CHANGE)
ucsi_partner_change(con);
- if (ucsi->ops)
- ret = ucsi_acknowledge_connector_change(ucsi);
- else
- ret = ucsi_ack(ucsi, UCSI_ACK_EVENT);
+ ret = ucsi_acknowledge_connector_change(ucsi);
if (ret)
dev_err(ucsi->dev, "%s: ACK failed (%d)", __func__, ret);
@@ -723,45 +569,6 @@ void ucsi_connector_change(struct ucsi *ucsi, u8 num)
}
EXPORT_SYMBOL_GPL(ucsi_connector_change);
-/**
- * ucsi_notify - PPM notification handler
- * @ucsi: Source UCSI Interface for the notifications
- *
- * Handle notifications from PPM of @ucsi.
- */
-void ucsi_notify(struct ucsi *ucsi)
-{
- struct ucsi_cci *cci;
-
- /* There is no requirement to sync here, but no harm either. */
- ucsi_sync(ucsi);
-
- cci = &ucsi->ppm->data->cci;
-
- if (cci->error)
- ucsi->status = UCSI_ERROR;
- else if (cci->busy)
- ucsi->status = UCSI_BUSY;
- else
- ucsi->status = UCSI_IDLE;
-
- if (cci->cmd_complete && test_bit(COMMAND_PENDING, &ucsi->flags)) {
- complete(&ucsi->complete);
- } else if (cci->ack_complete && test_bit(ACK_PENDING, &ucsi->flags)) {
- complete(&ucsi->complete);
- } else if (cci->connector_change) {
- struct ucsi_connector *con;
-
- con = &ucsi->connector[cci->connector_change - 1];
-
- if (!test_and_set_bit(EVENT_PENDING, &ucsi->flags))
- schedule_work(&con->work);
- }
-
- trace_ucsi_notify(ucsi->ppm->data->raw_cci);
-}
-EXPORT_SYMBOL_GPL(ucsi_notify);
-
/* -------------------------------------------------------------------------- */
static int ucsi_reset_connector(struct ucsi_connector *con, bool hard)
@@ -775,83 +582,39 @@ static int ucsi_reset_connector(struct ucsi_connector *con, bool hard)
static int ucsi_reset_ppm(struct ucsi *ucsi)
{
- struct ucsi_control ctrl;
+ u64 command = UCSI_PPM_RESET;
unsigned long tmo;
+ u32 cci;
int ret;
- if (ucsi->ops) {
- u64 command = UCSI_PPM_RESET;
- u32 cci;
-
- ret = ucsi->ops->async_write(ucsi, UCSI_CONTROL, &command,
- sizeof(command));
- if (ret < 0)
- return ret;
-
- tmo = jiffies + msecs_to_jiffies(UCSI_TIMEOUT_MS);
-
- do {
- if (time_is_before_jiffies(tmo))
- return -ETIMEDOUT;
-
- ret = ucsi->ops->read(ucsi, UCSI_CCI, &cci, sizeof(cci));
- if (ret)
- return ret;
-
- /* If the PPM is still doing something else, reset it again. */
- if (cci & ~UCSI_CCI_RESET_COMPLETE) {
- ret = ucsi->ops->async_write(ucsi, UCSI_CONTROL,
- &command,
- sizeof(command));
- if (ret < 0)
- return ret;
- }
-
- msleep(20);
- } while (!(cci & UCSI_CCI_RESET_COMPLETE));
-
- return 0;
- }
-
- ctrl.raw_cmd = 0;
- ctrl.cmd.cmd = UCSI_PPM_RESET;
- trace_ucsi_command(&ctrl);
- ret = ucsi->ppm->cmd(ucsi->ppm, &ctrl);
- if (ret)
- goto err;
+ ret = ucsi->ops->async_write(ucsi, UCSI_CONTROL, &command,
+ sizeof(command));
+ if (ret < 0)
+ return ret;
tmo = jiffies + msecs_to_jiffies(UCSI_TIMEOUT_MS);
do {
- /* Here sync is critical. */
- ret = ucsi_sync(ucsi);
- if (ret)
- goto err;
+ if (time_is_before_jiffies(tmo))
+ return -ETIMEDOUT;
- if (ucsi->ppm->data->cci.reset_complete)
- break;
+ ret = ucsi->ops->read(ucsi, UCSI_CCI, &cci, sizeof(cci));
+ if (ret)
+ return ret;
/* If the PPM is still doing something else, reset it again. */
- if (ucsi->ppm->data->raw_cci) {
- dev_warn_ratelimited(ucsi->dev,
- "Failed to reset PPM! Trying again..\n");
-
- trace_ucsi_command(&ctrl);
- ret = ucsi->ppm->cmd(ucsi->ppm, &ctrl);
- if (ret)
- goto err;
+ if (cci & ~UCSI_CCI_RESET_COMPLETE) {
+ ret = ucsi->ops->async_write(ucsi, UCSI_CONTROL,
+ &command,
+ sizeof(command));
+ if (ret < 0)
+ return ret;
}
- /* Letting the PPM settle down. */
msleep(20);
+ } while (!(cci & UCSI_CCI_RESET_COMPLETE));
- ret = -ETIMEDOUT;
- } while (time_is_after_jiffies(tmo));
-
-err:
- trace_ucsi_reset_ppm(&ctrl, ret);
-
- return ret;
+ return 0;
}
static int ucsi_role_cmd(struct ucsi_connector *con, struct ucsi_control *ctrl)
@@ -1266,51 +1029,6 @@ void ucsi_unregister(struct ucsi *ucsi)
}
EXPORT_SYMBOL_GPL(ucsi_unregister);
-/**
- * ucsi_register_ppm - Register UCSI PPM Interface
- * @dev: Device interface to the PPM
- * @ppm: The PPM interface
- *
- * Allocates UCSI instance, associates it with @ppm and returns it to the
- * caller, and schedules initialization of the interface.
- */
-struct ucsi *ucsi_register_ppm(struct device *dev, struct ucsi_ppm *ppm)
-{
- struct ucsi *ucsi;
-
- ucsi = kzalloc(sizeof(*ucsi), GFP_KERNEL);
- if (!ucsi)
- return ERR_PTR(-ENOMEM);
-
- INIT_WORK(&ucsi->work, ucsi_init_work);
- init_completion(&ucsi->complete);
- mutex_init(&ucsi->ppm_lock);
-
- ucsi->dev = dev;
- ucsi->ppm = ppm;
-
- /*
- * Communication with the PPM takes a lot of time. It is not reasonable
- * to initialize the driver here. Using a work for now.
- */
- queue_work(system_long_wq, &ucsi->work);
-
- return ucsi;
-}
-EXPORT_SYMBOL_GPL(ucsi_register_ppm);
-
-/**
- * ucsi_unregister_ppm - Unregister UCSI PPM Interface
- * @ucsi: struct ucsi associated with the PPM
- *
- * Unregister UCSI PPM that was created with ucsi_register().
- */
-void ucsi_unregister_ppm(struct ucsi *ucsi)
-{
- ucsi_unregister(ucsi);
-}
-EXPORT_SYMBOL_GPL(ucsi_unregister_ppm);
-
MODULE_AUTHOR("Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("USB Type-C Connector System Software Interface driver");
diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
index d8a8e8f2f912..29f9e7f0d212 100644
--- a/drivers/usb/typec/ucsi/ucsi.h
+++ b/drivers/usb/typec/ucsi/ucsi.h
@@ -398,54 +398,13 @@ struct ucsi_connector_status {
/* -------------------------------------------------------------------------- */
-struct ucsi;
-
-struct ucsi_data {
- u16 version;
- u16 reserved;
- union {
- u32 raw_cci;
- struct ucsi_cci cci;
- };
- struct ucsi_control ctrl;
- u32 message_in[4];
- u32 message_out[4];
-} __packed;
-
-/*
- * struct ucsi_ppm - Interface to UCSI Platform Policy Manager
- * @data: memory location to the UCSI data structures
- * @cmd: UCSI command execution routine
- * @sync: Refresh UCSI mailbox (the data structures)
- */
-struct ucsi_ppm {
- struct ucsi_data *data;
- int (*cmd)(struct ucsi_ppm *, struct ucsi_control *);
- int (*sync)(struct ucsi_ppm *);
-};
-
-struct ucsi *ucsi_register_ppm(struct device *dev, struct ucsi_ppm *ppm);
-void ucsi_unregister_ppm(struct ucsi *ucsi);
-void ucsi_notify(struct ucsi *ucsi);
-
-/* -------------------------------------------------------------------------- */
-
-enum ucsi_status {
- UCSI_IDLE = 0,
- UCSI_BUSY,
- UCSI_ERROR,
-};
-
struct ucsi {
u16 version;
struct device *dev;
- struct ucsi_ppm *ppm;
struct driver_data *driver_data;
const struct ucsi_operations *ops;
- enum ucsi_status status;
- struct completion complete;
struct ucsi_capability cap;
struct ucsi_connector *connector;
