@@ -28,6 +28,7 @@ void snd_hdac_ext_stream_spbcap_enable(struct hdac_bus *chip,
bool enable, int index);
int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_bus *bus);
+struct hdac_ext_link *snd_hdac_ext_bus_link_at(struct hdac_bus *bus, int addr);
struct hdac_ext_link *snd_hdac_ext_bus_get_link(struct hdac_bus *bus,
const char *codec_name);
@@ -132,6 +132,26 @@ void snd_hdac_link_free_all(struct hdac_bus *bus)
}
EXPORT_SYMBOL_GPL(snd_hdac_link_free_all);
+/**
+ * snd_hdac_ext_bus_link_at - get link at specified address
+ * @bus: link's parent bus device
+ * @addr: codec device address
+ *
+ * Returns link object or NULL if matching link is not found.
+ */
+struct hdac_ext_link *snd_hdac_ext_bus_link_at(struct hdac_bus *bus, int addr)
+{
+ struct hdac_ext_link *hlink;
+ int i;
+
+ list_for_each_entry(hlink, &bus->hlink_list, list)
+ for (i = 0; i < HDA_MAX_CODECS; i++)
+ if (hlink->lsdiid & (0x1 << addr))
+ return hlink;
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_at);
+
/**
* snd_hdac_ext_bus_get_link - get link based on codec name
* @bus: the pointer to HDAC bus object
@@ -140,8 +160,6 @@ EXPORT_SYMBOL_GPL(snd_hdac_link_free_all);
struct hdac_ext_link *snd_hdac_ext_bus_get_link(struct hdac_bus *bus,
const char *codec_name)
{
- int i;
- struct hdac_ext_link *hlink = NULL;
int bus_idx, addr;
if (sscanf(codec_name, "ehdaudio%dD%d", &bus_idx, &addr) != 2)
@@ -151,14 +169,7 @@ struct hdac_ext_link *snd_hdac_ext_bus_get_link(struct hdac_bus *bus,
if (addr < 0 || addr > 31)
return NULL;
- list_for_each_entry(hlink, &bus->hlink_list, list) {
- for (i = 0; i < HDA_MAX_CODECS; i++) {
- if (hlink->lsdiid & (0x1 << addr))
- return hlink;
- }
- }
-
- return NULL;
+ return snd_hdac_ext_bus_link_at(bus, addr);
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_link);
This patch exposes a new helper to directly retrieve the link from the codec address, and makes use of this helper when retrieving the link from the codec name. Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> --- include/sound/hdaudio_ext.h | 1 + sound/hda/ext/hdac_ext_controller.c | 31 +++++++++++++++++++---------- 2 files changed, 22 insertions(+), 10 deletions(-)