On 31-03-21, 18:00, Srinivas Kandagatla wrote:
> If we write registers very fast we can endup in a situation where some
> of the writes will be dropped without any notice.
>
> So wait for the fifo space to be available before reading/writing the
> soundwire registers.
>
> Signed-off-by: Srinivas
+static int swrm_wait_for_rd_fifo_avail(struct qcom_swrm_ctrl *swrm)
+{
+ u32 fifo_outstanding_cmd, value;
+ u8 fifo_retry_count = SWR_OVERFLOW_RETRY_COUNT;
+
+ /* Check for fifo underflow during read */
+ swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value);
+ fifo_
If we write registers very fast we can endup in a situation where some
of the writes will be dropped without any notice.
So wait for the fifo space to be available before reading/writing the
soundwire registers.
Signed-off-by: Srinivas Kandagatla
---
drivers/soundwire/qcom.c | 74 ++
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