diff options
| author | Mark Brown <broonie@kernel.org> | 2024-04-17 03:12:19 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-04-17 03:12:19 +0300 |
| commit | 1f05252a3a95bb898413126d3cd480fed4edab0e (patch) | |
| tree | d19f29a1fed2c3168053e5410304f4b0c191f964 /drivers/scsi/sd.c | |
| parent | 351007b069287d3f0399e9e83981b33a2050eb54 (diff) | |
| parent | 439fbc97502ae16f3e54e05d266d103674cc4f06 (diff) | |
| download | linux-1f05252a3a95bb898413126d3cd480fed4edab0e.tar.xz | |
Add bridged amplifiers to cs42l43
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
In some cs42l43 systems a couple of cs35l56 amplifiers are attached
to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled
by a SDCA class driver and these two amplifiers are controlled by
firmware running on the cs42l43. However, under Linux the decision
was made to interact with the cs42l43 directly, affording the user
greater control over the audio system. However, this has resulted
in an issue where these two bridged cs35l56 amplifiers are not
populated in ACPI and must be added manually. There is at least an
SDCA extension unit DT entry we can key off.
The process of adding this is handled using a software node, firstly the
ability to add native chip selects to software nodes must be added.
Secondly, an additional flag for naming the SPI devices is added this
allows the machine driver to key to the correct amplifier. Then finally,
the cs42l43 SPI driver adds the two amplifiers directly onto its SPI
bus.
An additional series will follow soon to add the audio machine driver
parts (in the sof-sdw driver), however that is fairly orthogonal to
this part of the process, getting the actual amplifiers registered.
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index ccff8f2e2e75..58fdf679341d 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3920,7 +3920,7 @@ static int sd_probe(struct device *dev) error = device_add_disk(dev, gd, NULL); if (error) { - put_device(&sdkp->disk_dev); + device_unregister(&sdkp->disk_dev); put_disk(gd); goto out; } @@ -4108,7 +4108,21 @@ static int sd_suspend_runtime(struct device *dev) return sd_suspend_common(dev, true); } -static int sd_resume(struct device *dev, bool runtime) +static int sd_resume(struct device *dev) +{ + struct scsi_disk *sdkp = dev_get_drvdata(dev); + + sd_printk(KERN_NOTICE, sdkp, "Starting disk\n"); + + if (opal_unlock_from_suspend(sdkp->opal_dev)) { + sd_printk(KERN_NOTICE, sdkp, "OPAL unlock failed\n"); + return -EIO; + } + + return 0; +} + +static int sd_resume_common(struct device *dev, bool runtime) { struct scsi_disk *sdkp = dev_get_drvdata(dev); int ret; @@ -4124,7 +4138,7 @@ static int sd_resume(struct device *dev, bool runtime) sd_printk(KERN_NOTICE, sdkp, "Starting disk\n"); ret = sd_start_stop_device(sdkp, 1); if (!ret) { - opal_unlock_from_suspend(sdkp->opal_dev); + sd_resume(dev); sdkp->suspended = false; } @@ -4143,7 +4157,7 @@ static int sd_resume_system(struct device *dev) return 0; } - return sd_resume(dev, false); + return sd_resume_common(dev, false); } static int sd_resume_runtime(struct device *dev) @@ -4170,7 +4184,7 @@ static int sd_resume_runtime(struct device *dev) "Failed to clear sense data\n"); } - return sd_resume(dev, true); + return sd_resume_common(dev, true); } static const struct dev_pm_ops sd_pm_ops = { @@ -4193,6 +4207,7 @@ static struct scsi_driver sd_template = { .pm = &sd_pm_ops, }, .rescan = sd_rescan, + .resume = sd_resume, .init_command = sd_init_command, .uninit_command = sd_uninit_command, .done = sd_done, |