static inline int it66121_wait_ddc_ready(struct it66121_ctx *ctx)
{
int ret, val;
- u32 busy = IT66121_DDC_STATUS_NOACK | IT66121_DDC_STATUS_WAIT_BUS |
- IT66121_DDC_STATUS_ARBI_LOSE;
+ u32 error = IT66121_DDC_STATUS_NOACK | IT66121_DDC_STATUS_WAIT_BUS |
+ IT66121_DDC_STATUS_ARBI_LOSE;
+ u32 done = IT66121_DDC_STATUS_TX_DONE;
- ret = regmap_read_poll_timeout(ctx->regmap, IT66121_DDC_STATUS_REG, val, true,
- IT66121_EDID_SLEEP_US, IT66121_EDID_TIMEOUT_US);
+ ret = regmap_read_poll_timeout(ctx->regmap, IT66121_DDC_STATUS_REG, val,
+ val & (error | done), IT66121_EDID_SLEEP_US,
+ IT66121_EDID_TIMEOUT_US);
if (ret)
return ret;
- if (val & busy)
+ if (val & error)
return -EAGAIN;
return 0;
offset += cnt;
remain -= cnt;
- /* Per programming manual, sleep here before emptying the FIFO */
- msleep(20);
-
ret = it66121_wait_ddc_ready(ctx);
if (ret)
return ret;