From: Stefan Binding sbinding@opensource.cirrus.com
The Subsystem ID is read from the HDA driver, and will be used by the CS35L41 driver to be able to uniquely identify the laptop, which is required to be able to define firmware to be used by specific models.
Signed-off-by: Stefan Binding sbinding@opensource.cirrus.com Signed-off-by: Vitaly Rodionov vitalyr@opensource.cirrus.com --- sound/pci/hda/cs35l41_hda.c | 3 +++ sound/pci/hda/cs35l41_hda.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c index e0d236eae93e..b6e94e7b482a 100644 --- a/sound/pci/hda/cs35l41_hda.c +++ b/sound/pci/hda/cs35l41_hda.c @@ -355,6 +355,9 @@ static int cs35l41_hda_bind(struct device *dev, struct device *master, void *mas return -EBUSY;
comps->dev = dev; + if (!cs35l41->acpi_subsystem_id) + cs35l41->acpi_subsystem_id = devm_kasprintf(dev, GFP_KERNEL, "%.8x", + comps->codec->core.subsystem_id); cs35l41->codec = comps->codec; strscpy(comps->name, dev_name(dev), sizeof(comps->name)); comps->playback_hook = cs35l41_hda_playback_hook; diff --git a/sound/pci/hda/cs35l41_hda.h b/sound/pci/hda/cs35l41_hda.h index 5814af050944..b57f59a1ba49 100644 --- a/sound/pci/hda/cs35l41_hda.h +++ b/sound/pci/hda/cs35l41_hda.h @@ -42,6 +42,7 @@ struct cs35l41_hda { int channel_index; unsigned volatile long irq_errors; const char *amp_name; + const char *acpi_subsystem_id; struct mutex fw_mutex; struct regmap_irq_chip_data *irq_data; bool firmware_running;