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ASoC: cs35l41: Detect CSPL errors when sending CSPL commands
The existing code checks for the correct state transition after sending a command. However, it is possible for the message box to return -1, which indicates an error, if an error has occurred in the firmware. We can detect if the error has occurred, and return a different error. In addition, there is no recovering from a CSPL error, so the retry mechanism is not needed in this case, and we can return immediately. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20231026150558.2105827-9-sbinding@opensource.cirrus.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -816,6 +816,8 @@ struct cs35l41_otp_map_element_t {
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};
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enum cs35l41_cspl_mbox_status {
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CSPL_MBOX_STS_ERROR = U32_MAX,
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CSPL_MBOX_STS_ERROR2 = 0x00ffffff, // firmware not always sign-extending 24-bit value
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CSPL_MBOX_STS_RUNNING = 0,
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CSPL_MBOX_STS_PAUSED = 1,
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CSPL_MBOX_STS_RDY_FOR_REINIT = 2,
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@ -1474,6 +1474,11 @@ int cs35l41_set_cspl_mbox_cmd(struct device *dev, struct regmap *regmap,
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continue;
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}
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if (sts == CSPL_MBOX_STS_ERROR || sts == CSPL_MBOX_STS_ERROR2) {
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dev_err(dev, "CSPL Error Detected\n");
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return -EINVAL;
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}
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if (!cs35l41_check_cspl_mbox_sts(cmd, sts))
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dev_dbg(dev, "[%u] cmd %u returned invalid sts %u", i, cmd, sts);
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else
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