Hi Prashant,
Thank you for your patch.
On 3/9/20 11:54, Prashant Malani wrote:
> Since all the other call-sites of cros_ec_cmd_xfer() have been converted
> to use cros_ec_cmd_xfer_status() instead, update the remaining
> call-sites to prepare for the merge of cros_ec_cmd_xfer() into
> cros_ec_cmd_xfer_status().
>
> As part of this update, change the error handling inside
> cros_ec_get_sensor_count() such that the legacy LPC interface is tried
> on all error values, not just when msg->result != EC_RESULT_SUCCESS.
>
> Signed-off-by: Prashant Malani <pmal...@chromium.org>
Gwendal, I'd like to hear from you regarding this patch as you're the one that
know most about the corner cases for the sensors in different hardware. Could
you take a look and give us your Reviewed tag if all is good?
Thanks,
Enric
> ---
> drivers/platform/chrome/cros_ec_proto.c | 15 ++++-----------
> 1 file changed, 4 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/platform/chrome/cros_ec_proto.c
> b/drivers/platform/chrome/cros_ec_proto.c
> index dda182132a6a..2cb1defcdd13 100644
> --- a/drivers/platform/chrome/cros_ec_proto.c
> +++ b/drivers/platform/chrome/cros_ec_proto.c
> @@ -650,7 +650,7 @@ static int get_next_event_xfer(struct cros_ec_device
> *ec_dev,
> msg->insize = size;
> msg->outsize = 0;
>
> - ret = cros_ec_cmd_xfer(ec_dev, msg);
> + ret = cros_ec_cmd_xfer_status(ec_dev, msg);
> if (ret > 0) {
> ec_dev->event_size = ret - 1;
> ec_dev->event_data = *event;
> @@ -694,7 +694,7 @@ static int get_keyboard_state_event(struct cros_ec_device
> *ec_dev)
> msg->insize = sizeof(ec_dev->event_data.data);
> msg->outsize = 0;
>
> - ec_dev->event_size = cros_ec_cmd_xfer(ec_dev, msg);
> + ec_dev->event_size = cros_ec_cmd_xfer_status(ec_dev, msg);
> ec_dev->event_data.event_type = EC_MKBP_EVENT_KEY_MATRIX;
> memcpy(&ec_dev->event_data.data, msg->data,
> sizeof(ec_dev->event_data.data));
> @@ -883,11 +883,9 @@ int cros_ec_get_sensor_count(struct cros_ec_dev *ec)
> params = (struct ec_params_motion_sense *)msg->data;
> params->cmd = MOTIONSENSE_CMD_DUMP;
>
> - ret = cros_ec_cmd_xfer(ec->ec_dev, msg);
> + ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg);
> if (ret < 0) {
> sensor_count = ret;
> - } else if (msg->result != EC_RES_SUCCESS) {
> - sensor_count = -EPROTO;
> } else {
> resp = (struct ec_response_motion_sense *)msg->data;
> sensor_count = resp->dump.sensor_count;
> @@ -898,9 +896,7 @@ int cros_ec_get_sensor_count(struct cros_ec_dev *ec)
> * Check legacy mode: Let's find out if sensors are accessible
> * via LPC interface.
> */
> - if (sensor_count == -EPROTO &&
> - ec->cmd_offset == 0 &&
> - ec_dev->cmd_readmem) {
> + if (sensor_count < 0 && ec->cmd_offset == 0 && ec_dev->cmd_readmem) {
> ret = ec_dev->cmd_readmem(ec_dev, EC_MEMMAP_ACC_STATUS,
> 1, &status);
> if (ret >= 0 &&
> @@ -915,9 +911,6 @@ int cros_ec_get_sensor_count(struct cros_ec_dev *ec)
> */
> sensor_count = 0;
> }
> - } else if (sensor_count == -EPROTO) {
> - /* EC responded, but does not understand DUMP command. */
> - sensor_count = 0;
> }
> return sensor_count;
> }
>
