This patch is adding a sysfs entry in order to be able to get
access to SST FW version.
Signed-off-by: Sebastien Guiriec <sebastien.guiriec@xxxxxxxxx>
Acked-by: Vinod Koul <vinod.koul@xxxxxxxxx>
---
sound/soc/intel/atom/sst/sst.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c
index a4b458e..9d35706 100644
--- a/sound/soc/intel/atom/sst/sst.c
+++ b/sound/soc/intel/atom/sst/sst.c
@@ -27,6 +27,7 @@
#include <linux/pm_qos.h>
#include <linux/async.h>
#include <linux/acpi.h>
+#include <linux/sysfs.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <asm/platform_sst_audio.h>
@@ -241,6 +242,32 @@ int sst_alloc_drv_context(struct intel_sst_drv **ctx,
}
EXPORT_SYMBOL_GPL(sst_alloc_drv_context);
+static ssize_t firmware_version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct intel_sst_drv *ctx = dev_get_drvdata(dev);
+
+ if (ctx->fw_version.type == 0 && ctx->fw_version.major == 0 &&
+ ctx->fw_version.minor == 0 && ctx->fw_version.build == 0)
+ return sprintf(buf, "FW not yet loaded\n");
+ else
+ return sprintf(buf, "v%02x.%02x.%02x.%02x\n",
+ ctx->fw_version.type, ctx->fw_version.major,
+ ctx->fw_version.minor, ctx->fw_version.build);
+
+}
+
+DEVICE_ATTR_RO(firmware_version);
+
+static const struct attribute *sst_fw_version_attrs[] = {
+ &dev_attr_firmware_version.attr,
+ NULL,
+};
+
+static const struct attribute_group sst_fw_version_attr_group = {
+ .attrs = (struct attribute **)sst_fw_version_attrs,
+};
+
int sst_context_init(struct intel_sst_drv *ctx)
{
int ret = 0, i;
@@ -314,8 +341,19 @@ int sst_context_init(struct intel_sst_drv *ctx)
dev_err(ctx->dev, "Firmware download failed:%d\n", ret);
goto do_free_mem;
}
+
+ ret = sysfs_create_group(&ctx->dev->kobj,
+ &sst_fw_version_attr_group);
+ if (ret) {
+ dev_err(ctx->dev,
+ "Unable to create sysfs\n");
+ goto err_sysfs;
+ }
+
sst_register(ctx->dev);
return 0;
+err_sysfs:
+ sysfs_remove_group(&ctx->dev->kobj, &sst_fw_version_attr_group);
do_free_mem:
destroy_workqueue(ctx->post_msg_wq);
@@ -329,6 +367,7 @@ void sst_context_cleanup(struct intel_sst_drv *ctx)
pm_runtime_disable(ctx->dev);
sst_unregister(ctx->dev);
sst_set_fw_state_locked(ctx, SST_SHUTDOWN);
+ sysfs_remove_group(&ctx->dev->kobj, &sst_fw_version_attr_group);
flush_scheduled_work();
destroy_workqueue(ctx->post_msg_wq);
pm_qos_remove_request(ctx->qos);
--
2.9.3
---------------------------------------------------------------------
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Registered headquarters: "Les Montalets"- 2, rue de Paris,
92196 Meudon Cedex, France
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