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-rw-r--r--sound/hda/ext/hdac_ext_controller.c29
-rw-r--r--sound/hda/ext/hdac_ext_stream.c72
2 files changed, 100 insertions, 1 deletions
diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c
index 63215b17247c..548cc1e4114b 100644
--- a/sound/hda/ext/hdac_ext_controller.c
+++ b/sound/hda/ext/hdac_ext_controller.c
@@ -77,6 +77,12 @@ int snd_hdac_ext_bus_parse_capabilities(struct hdac_ext_bus *ebus)
ebus->spbcap = bus->remap_addr + offset;
break;
+ case AZX_DRSM_CAP_ID:
+ /* DMA resume capability found, handler function */
+ dev_dbg(bus->dev, "Found DRSM capability\n");
+ ebus->drsmcap = bus->remap_addr + offset;
+ break;
+
default:
dev_dbg(bus->dev, "Unknown capability %d\n", cur_cap);
break;
@@ -240,7 +246,7 @@ static int check_hdac_link_power_active(struct hdac_ext_link *link, bool enable)
int mask = (1 << AZX_MLCTL_CPA);
udelay(3);
- timeout = 50;
+ timeout = 150;
do {
val = readl(link->ml_addr + AZX_REG_ML_LCTL);
@@ -282,6 +288,27 @@ int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *link)
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down);
/**
+ * snd_hdac_ext_bus_link_power_up_all -power up all hda link
+ * @ebus: HD-audio extended bus
+ */
+int snd_hdac_ext_bus_link_power_up_all(struct hdac_ext_bus *ebus)
+{
+ struct hdac_ext_link *hlink = NULL;
+ int ret;
+
+ list_for_each_entry(hlink, &ebus->hlink_list, list) {
+ snd_hdac_updatel(hlink->ml_addr,
+ AZX_REG_ML_LCTL, 0, AZX_MLCTL_SPA);
+ ret = check_hdac_link_power_active(hlink, true);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up_all);
+
+/**
* snd_hdac_ext_bus_link_power_down_all -power down all hda link
* @ebus: HD-audio extended bus
*/
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c
index cb89ec7c8147..023cc4cad5c1 100644
--- a/sound/hda/ext/hdac_ext_stream.c
+++ b/sound/hda/ext/hdac_ext_stream.c
@@ -59,6 +59,10 @@ void snd_hdac_ext_stream_init(struct hdac_ext_bus *ebus,
AZX_SPB_MAXFIFO;
}
+ if (ebus->drsmcap)
+ stream->dpibr_addr = ebus->drsmcap + AZX_DRSM_BASE +
+ AZX_DRSM_INTERVAL * idx;
+
stream->decoupled = false;
snd_hdac_stream_init(bus, &stream->hstream, idx, direction, tag);
}
@@ -107,6 +111,7 @@ void snd_hdac_stream_free_all(struct hdac_ext_bus *ebus)
while (!list_empty(&bus->stream_list)) {
s = list_first_entry(&bus->stream_list, struct hdac_stream, list);
stream = stream_to_hdac_ext_stream(s);
+ snd_hdac_ext_stream_decouple(ebus, stream, false);
list_del(&s->list);
kfree(stream);
}
@@ -497,3 +502,70 @@ void snd_hdac_ext_stop_streams(struct hdac_ext_bus *ebus)
}
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_stop_streams);
+
+/**
+ * snd_hdac_ext_stream_drsm_enable - enable DMA resume for a stream
+ * @ebus: HD-audio ext core bus
+ * @enable: flag to enable/disable DRSM
+ * @index: stream index for which DRSM need to be enabled
+ */
+void snd_hdac_ext_stream_drsm_enable(struct hdac_ext_bus *ebus,
+ bool enable, int index)
+{
+ u32 mask = 0;
+ u32 register_mask = 0;
+ struct hdac_bus *bus = &ebus->bus;
+
+ if (!ebus->drsmcap) {
+ dev_err(bus->dev, "Address of DRSM capability is NULL");
+ return;
+ }
+
+ mask |= (1 << index);
+
+ register_mask = readl(ebus->drsmcap + AZX_REG_SPB_SPBFCCTL);
+
+ mask |= register_mask;
+
+ if (enable)
+ snd_hdac_updatel(ebus->drsmcap, AZX_REG_DRSM_CTL, 0, mask);
+ else
+ snd_hdac_updatel(ebus->drsmcap, AZX_REG_DRSM_CTL, mask, 0);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_drsm_enable);
+
+/**
+ * snd_hdac_ext_stream_set_dpibr - sets the dpibr value of a stream
+ * @ebus: HD-audio ext core bus
+ * @stream: hdac_ext_stream
+ * @value: dpib value to set
+ */
+int snd_hdac_ext_stream_set_dpibr(struct hdac_ext_bus *ebus,
+ struct hdac_ext_stream *stream, u32 value)
+{
+ struct hdac_bus *bus = &ebus->bus;
+
+ if (!ebus->drsmcap) {
+ dev_err(bus->dev, "Address of DRSM capability is NULL");
+ return -EINVAL;
+ }
+
+ writel(value, stream->dpibr_addr);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_dpibr);
+
+/**
+ * snd_hdac_ext_stream_set_lpib - sets the lpib value of a stream
+ * @ebus: HD-audio ext core bus
+ * @stream: hdac_ext_stream
+ * @value: lpib value to set
+ */
+int snd_hdac_ext_stream_set_lpib(struct hdac_ext_stream *stream, u32 value)
+{
+ snd_hdac_stream_writel(&stream->hstream, SD_LPIB, value);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_lpib);