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authorSimon Trimmer <simont@opensource.cirrus.com>2023-08-29 19:04:33 +0300
committerMark Brown <broonie@kernel.org>2023-08-29 22:12:38 +0300
commit06afec5c988acb2c4f566eac2f6ec53d30d3a1b5 (patch)
tree33bc812ee65c2f4beff4375deeb973d8c7619021 /sound/soc/codecs/cs35l56-shared.c
parentb5f3cec3159dd28563e5a88096769f7b77272790 (diff)
downloadlinux-06afec5c988acb2c4f566eac2f6ec53d30d3a1b5.tar.xz
ASoC: cs35l56: Waiting for firmware to boot must be tolerant of I/O errors
Ignore failure to read from the cs35l56 when polling as the device will NAK i2c accesses until it has booted and this would terminate the poll of regmap_read_poll_timeout(). Fixes: 8a731fd37f8b ("ASoC: cs35l56: Move utility functions to shared file") Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com Link: https://lore.kernel.org/r/20230829160433.2647889-1-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org
Diffstat (limited to 'sound/soc/codecs/cs35l56-shared.c')
-rw-r--r--sound/soc/codecs/cs35l56-shared.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c
index ae373f335ea8..98b1e63360ae 100644
--- a/sound/soc/codecs/cs35l56-shared.c
+++ b/sound/soc/codecs/cs35l56-shared.c
@@ -243,26 +243,27 @@ int cs35l56_wait_for_firmware_boot(struct cs35l56_base *cs35l56_base)
{
unsigned int reg;
unsigned int val;
- int ret;
+ int read_ret, poll_ret;
if (cs35l56_base->rev < CS35L56_REVID_B0)
reg = CS35L56_DSP1_HALO_STATE_A1;
else
reg = CS35L56_DSP1_HALO_STATE;
- ret = regmap_read_poll_timeout(cs35l56_base->regmap, reg,
- val,
- (val < 0xFFFF) && (val >= CS35L56_HALO_STATE_BOOT_DONE),
- CS35L56_HALO_STATE_POLL_US,
- CS35L56_HALO_STATE_TIMEOUT_US);
-
- if ((ret < 0) && (ret != -ETIMEDOUT)) {
- dev_err(cs35l56_base->dev, "Failed to read HALO_STATE: %d\n", ret);
- return ret;
- }
-
- if ((ret == -ETIMEDOUT) || (val != CS35L56_HALO_STATE_BOOT_DONE)) {
- dev_err(cs35l56_base->dev, "Firmware boot fail: HALO_STATE=%#x\n", val);
+ /*
+ * This can't be a regmap_read_poll_timeout() because cs35l56 will NAK
+ * I2C until it has booted which would terminate the poll
+ */
+ poll_ret = read_poll_timeout(regmap_read, read_ret,
+ (val < 0xFFFF) && (val >= CS35L56_HALO_STATE_BOOT_DONE),
+ CS35L56_HALO_STATE_POLL_US,
+ CS35L56_HALO_STATE_TIMEOUT_US,
+ false,
+ cs35l56_base->regmap, reg, &val);
+
+ if (poll_ret) {
+ dev_err(cs35l56_base->dev, "Firmware boot timed out(%d): HALO_STATE=%#x\n",
+ read_ret, val);
return -EIO;
}