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ASoC: Intel: Skylake: Report Platform ID info from NHLT 

This patch create entry in sysfs file system to report the
platform_id = "pci-id-oem_id-oem_table_id-oem_revision"
for board identification.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Sodhi, VunnyX <vunnyx.sodhi@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Subhransu S. Prusty 2017-01-11 16:31:02 +05:30 committed by Mark Brown
parent ba21034677
commit 0cf5a17159
3 changed files with 46 additions and 3 deletions
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42
sound/soc/intel/skylake/skl-nhlt.c
View File

@ -189,9 +189,9 @@ int skl_get_dmic_geo(struct skl *skl)
return dmic_geo;
}
static void skl_nhlt_trim_space(struct skl *skl)
static void skl_nhlt_trim_space(char *trim)
{
char *s = skl->tplg_name;
char *s = trim;
int cnt;
int i;
@ -218,7 +218,43 @@ int skl_nhlt_update_topology_bin(struct skl *skl)
skl->pci_id, nhlt->header.oem_id, nhlt->header.oem_table_id,
nhlt->header.oem_revision, "-tplg.bin");
skl_nhlt_trim_space(skl);
skl_nhlt_trim_space(skl->tplg_name);
return 0;
}
static ssize_t skl_nhlt_platform_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_ext_bus *ebus = pci_get_drvdata(pci);
struct skl *skl = ebus_to_skl(ebus);
struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
char platform_id[32];
sprintf(platform_id, "%x-%.6s-%.8s-%d", skl->pci_id,
nhlt->header.oem_id, nhlt->header.oem_table_id,
nhlt->header.oem_revision);
skl_nhlt_trim_space(platform_id);
return sprintf(buf, "%s\n", platform_id);
}
static DEVICE_ATTR(platform_id, 0444, skl_nhlt_platform_id_show, NULL);
int skl_nhlt_create_sysfs(struct skl *skl)
{
struct device *dev = &skl->pci->dev;
if (sysfs_create_file(&dev->kobj, &dev_attr_platform_id.attr))
dev_warn(dev, "Error creating sysfs entry\n");
return 0;
}
void skl_nhlt_remove_sysfs(struct skl *skl)
{
struct device *dev = &skl->pci->dev;
sysfs_remove_file(&dev->kobj, &dev_attr_platform_id.attr);
}

5
sound/soc/intel/skylake/skl.c
View File

@ -732,6 +732,10 @@ static int skl_probe(struct pci_dev *pci,
goto out_display_power_off;
}
err = skl_nhlt_create_sysfs(skl);
if (err < 0)
goto out_nhlt_free;
skl_nhlt_update_topology_bin(skl);
pci_set_drvdata(skl->pci, ebus);
@ -852,6 +856,7 @@ static void skl_remove(struct pci_dev *pci)
skl_free_dsp(skl);
skl_machine_device_unregister(skl);
skl_dmic_device_unregister(skl);
skl_nhlt_remove_sysfs(skl);
skl_nhlt_free(skl->nhlt);
skl_free(ebus);
dev_set_drvdata(&pci->dev, NULL);

2
sound/soc/intel/skylake/skl.h
View File

@ -130,5 +130,7 @@ int skl_resume_dsp(struct skl *skl);
void skl_cleanup_resources(struct skl *skl);
const struct skl_dsp_ops *skl_get_dsp_ops(int pci_id);
void skl_update_d0i3c(struct device *dev, bool enable);
int skl_nhlt_create_sysfs(struct skl *skl);
void skl_nhlt_remove_sysfs(struct skl *skl);
#endif /* __SOUND_SOC_SKL_H */