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usb: typec: ucsi: Add support for message out data structure

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Add support for updating message out data structure for UCSI
ACPI interface for UCSI 2.1 and UCSI 3.0 commands such as
Set PDOs and LPM Firmware Update.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Pooja Katiyar <pooja.katiyar@intel.com>
Link: https://patch.msgid.link/5bb1f367e44c9fc5244c3e10e513f02d62fe8166.1761773881.git.pooja.katiyar@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pooja Katiyar 2025-10-30 07:48:56 -07:00 committed by Greg Kroah-Hartman
parent 3e082978c3
commit db0028637c
3 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/usb/typec/ucsi/ucsi.c
View File

@ -67,6 +67,20 @@ int ucsi_sync_control_common(struct ucsi *ucsi, u64 command, u32 *cci)
reinit_completion(&ucsi->complete);
if (ucsi->message_out_size > 0) {
if (!ucsi->ops->write_message_out) {
ucsi->message_out_size = 0;
ret = -EOPNOTSUPP;
goto out_clear_bit;
}
ret = ucsi->ops->write_message_out(ucsi, ucsi->message_out,
ucsi->message_out_size);
ucsi->message_out_size = 0;
if (ret)
goto out_clear_bit;
}
ret = ucsi->ops->async_control(ucsi, command);
if (ret)
goto out_clear_bit;

2
drivers/usb/typec/ucsi/ucsi.h
View File

@ -69,6 +69,7 @@ struct dentry;
* @read_cci: Read CCI register
* @poll_cci: Read CCI register while polling with notifications disabled
* @read_message_in: Read message data from UCSI
* @write_message_out: Write message data to UCSI
* @sync_control: Blocking control operation
* @async_control: Non-blocking control operation
* @update_altmodes: Squashes duplicate DP altmodes
@ -84,6 +85,7 @@ struct ucsi_operations {
int (*read_cci)(struct ucsi *ucsi, u32 *cci);
int (*poll_cci)(struct ucsi *ucsi, u32 *cci);
int (*read_message_in)(struct ucsi *ucsi, void *val, size_t val_len);
int (*write_message_out)(struct ucsi *ucsi, void *data, size_t data_len);
int (*sync_control)(struct ucsi *ucsi, u64 command, u32 *cci);
int (*async_control)(struct ucsi *ucsi, u64 command);
bool (*update_altmodes)(struct ucsi *ucsi, u8 recipient,

16
drivers/usb/typec/ucsi/ucsi_acpi.c
View File

@ -86,6 +86,21 @@ static int ucsi_acpi_read_message_in(struct ucsi *ucsi, void *val, size_t val_le
return 0;
}
static int ucsi_acpi_write_message_out(struct ucsi *ucsi, void *data, size_t data_len)
{
struct ucsi_acpi *ua = ucsi_get_drvdata(ucsi);
if (!data || !data_len)
return -EINVAL;
if (ucsi->version <= UCSI_VERSION_1_2)
memcpy(ua->base + UCSI_MESSAGE_OUT, data, data_len);
else
memcpy(ua->base + UCSIv2_MESSAGE_OUT, data, data_len);
return 0;
}
static int ucsi_acpi_async_control(struct ucsi *ucsi, u64 command)
{
struct ucsi_acpi *ua = ucsi_get_drvdata(ucsi);
@ -101,6 +116,7 @@ static const struct ucsi_operations ucsi_acpi_ops = {
.read_cci = ucsi_acpi_read_cci,
.poll_cci = ucsi_acpi_poll_cci,
.read_message_in = ucsi_acpi_read_message_in,
.write_message_out = ucsi_acpi_write_message_out,
.sync_control = ucsi_sync_control_common,
.async_control = ucsi_acpi_async_control
};