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-rw-r--r--sound/hda/ext/hdac_ext_controller.c29
-rw-r--r--sound/hda/ext/hdac_ext_stream.c72
-rw-r--r--sound/hda/hdac_controller.c7
-rw-r--r--sound/hda/hdac_i915.c68
4 files changed, 173 insertions, 3 deletions
diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c
index 63215b172..548cc1e41 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 cb89ec7c8..023cc4cad 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);
diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index b5a17cb51..8c486235c 100644
--- a/sound/hda/hdac_controller.c
+++ b/sound/hda/hdac_controller.c
@@ -426,18 +426,22 @@ EXPORT_SYMBOL_GPL(snd_hdac_bus_stop_chip);
* @bus: HD-audio core bus
* @status: INTSTS register value
* @ask: callback to be called for woken streams
+ *
+ * Returns the bits of handled streams, or zero if no stream is handled.
*/
-void snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
+int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
void (*ack)(struct hdac_bus *,
struct hdac_stream *))
{
struct hdac_stream *azx_dev;
u8 sd_status;
+ int handled = 0;
list_for_each_entry(azx_dev, &bus->stream_list, list) {
if (status & azx_dev->sd_int_sta_mask) {
sd_status = snd_hdac_stream_readb(azx_dev, SD_STS);
snd_hdac_stream_writeb(azx_dev, SD_STS, SD_INT_MASK);
+ handled |= 1 << azx_dev->index;
if (!azx_dev->substream || !azx_dev->running ||
!(sd_status & SD_INT_COMPLETE))
continue;
@@ -445,6 +449,7 @@ void snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
ack(bus, azx_dev);
}
}
+ return handled;
}
EXPORT_SYMBOL_GPL(snd_hdac_bus_handle_stream_irq);
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c
index 8fef1b8d1..f6854dbd7 100644
--- a/sound/hda/hdac_i915.c
+++ b/sound/hda/hdac_i915.c
@@ -118,6 +118,72 @@ int snd_hdac_get_display_clk(struct hdac_bus *bus)
}
EXPORT_SYMBOL_GPL(snd_hdac_get_display_clk);
+/* There is a fixed mapping between audio pin node and display port
+ * on current Intel platforms:
+ * Pin Widget 5 - PORT B (port = 1 in i915 driver)
+ * Pin Widget 6 - PORT C (port = 2 in i915 driver)
+ * Pin Widget 7 - PORT D (port = 3 in i915 driver)
+ */
+static int pin2port(hda_nid_t pin_nid)
+{
+ return pin_nid - 4;
+}
+
+/**
+ * snd_hdac_sync_audio_rate - Set N/CTS based on the sample rate
+ * @bus: HDA core bus
+ * @nid: the pin widget NID
+ * @rate: the sample rate to set
+ *
+ * This function is supposed to be used only by a HD-audio controller
+ * driver that needs the interaction with i915 graphics.
+ *
+ * This function sets N/CTS value based on the given sample rate.
+ * Returns zero for success, or a negative error code.
+ */
+int snd_hdac_sync_audio_rate(struct hdac_bus *bus, hda_nid_t nid, int rate)
+{
+ struct i915_audio_component *acomp = bus->audio_component;
+
+ if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate)
+ return -ENODEV;
+ return acomp->ops->sync_audio_rate(acomp->dev, pin2port(nid), rate);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
+
+/**
+ * snd_hdac_acomp_get_eld - Get the audio state and ELD via component
+ * @bus: HDA core bus
+ * @nid: the pin widget NID
+ * @audio_enabled: the pointer to store the current audio state
+ * @buffer: the buffer pointer to store ELD bytes
+ * @max_bytes: the max bytes to be stored on @buffer
+ *
+ * This function is supposed to be used only by a HD-audio controller
+ * driver that needs the interaction with i915 graphics.
+ *
+ * This function queries the current state of the audio on the given
+ * digital port and fetches the ELD bytes onto the given buffer.
+ * It returns the number of bytes for the total ELD data, zero for
+ * invalid ELD, or a negative error code.
+ *
+ * The return size is the total bytes required for the whole ELD bytes,
+ * thus it may be over @max_bytes. If it's over @max_bytes, it implies
+ * that only a part of ELD bytes have been fetched.
+ */
+int snd_hdac_acomp_get_eld(struct hdac_bus *bus, hda_nid_t nid,
+ bool *audio_enabled, char *buffer, int max_bytes)
+{
+ struct i915_audio_component *acomp = bus->audio_component;
+
+ if (!acomp || !acomp->ops || !acomp->ops->get_eld)
+ return -ENODEV;
+
+ return acomp->ops->get_eld(acomp->dev, pin2port(nid), audio_enabled,
+ buffer, max_bytes);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld);
+
static int hdac_component_master_bind(struct device *dev)
{
struct i915_audio_component *acomp = hdac_acomp;
@@ -240,7 +306,7 @@ out_master_del:
out_err:
kfree(acomp);
bus->audio_component = NULL;
- dev_err(dev, "failed to add i915 component master (%d)\n", ret);
+ dev_info(dev, "failed to add i915 component master (%d)\n", ret);
return ret;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-01 09:48:00 +0000