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Diffstat (limited to 'sound/hda/ext/hdac_ext_controller.c')
-rw-r--r--sound/hda/ext/hdac_ext_controller.c179
1 files changed, 120 insertions, 59 deletions
diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c
index 4d060d5b1db6..6199bb60ccf0 100644
--- a/sound/hda/ext/hdac_ext_controller.c
+++ b/sound/hda/ext/hdac_ext_controller.c
@@ -15,13 +15,6 @@
#include <sound/hdaudio_ext.h>
/*
- * maximum HDAC capablities we should parse to avoid endless looping:
- * currently we have 4 extended caps, so this is future proof for now.
- * extend when this limit is seen meeting in real HW
- */
-#define HDAC_MAX_CAPS 10
-
-/*
* processing pipe helpers - these helpers are useful for dealing with HDA
* new capability of processing pipelines
*/
@@ -115,67 +108,78 @@ int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_bus *bus)
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_ml_capabilities);
/**
- * snd_hdac_link_free_all- free hdac extended link objects
+ * snd_hdac_ext_link_free_all- free hdac extended link objects
*
* @bus: the pointer to HDAC bus object
*/
-void snd_hdac_link_free_all(struct hdac_bus *bus)
+void snd_hdac_ext_link_free_all(struct hdac_bus *bus)
{
- struct hdac_ext_link *l;
+ struct hdac_ext_link *hlink;
while (!list_empty(&bus->hlink_list)) {
- l = list_first_entry(&bus->hlink_list, struct hdac_ext_link, list);
- list_del(&l->list);
- kfree(l);
+ hlink = list_first_entry(&bus->hlink_list, struct hdac_ext_link, list);
+ list_del(&hlink->list);
+ kfree(hlink);
}
}
-EXPORT_SYMBOL_GPL(snd_hdac_link_free_all);
+EXPORT_SYMBOL_GPL(snd_hdac_ext_link_free_all);
+
+/**
+ * snd_hdac_ext_bus_get_hlink_by_addr - get hlink at specified address
+ * @bus: hlink's parent bus device
+ * @addr: codec device address
+ *
+ * Returns hlink object or NULL if matching hlink is not found.
+ */
+struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_addr(struct hdac_bus *bus, int addr)
+{
+ struct hdac_ext_link *hlink;
+
+ list_for_each_entry(hlink, &bus->hlink_list, list)
+ if (hlink->lsdiid & (0x1 << addr))
+ return hlink;
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_addr);
/**
- * snd_hdac_ext_bus_get_link_index - get link based on codec name
+ * snd_hdac_ext_bus_get_hlink_by_name - get hlink based on codec name
* @bus: the pointer to HDAC bus object
* @codec_name: codec name
*/
-struct hdac_ext_link *snd_hdac_ext_bus_get_link(struct hdac_bus *bus,
- const char *codec_name)
+struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_name(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)
return NULL;
if (bus->idx != bus_idx)
return NULL;
+ 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_get_hlink_by_addr(bus, addr);
}
-EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_link);
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_name);
-static int check_hdac_link_power_active(struct hdac_ext_link *link, bool enable)
+static int check_hdac_link_power_active(struct hdac_ext_link *hlink, bool enable)
{
int timeout;
u32 val;
- int mask = (1 << AZX_MLCTL_CPA_SHIFT);
+ int mask = (1 << AZX_ML_LCTL_CPA_SHIFT);
udelay(3);
timeout = 150;
do {
- val = readl(link->ml_addr + AZX_REG_ML_LCTL);
+ val = readl(hlink->ml_addr + AZX_REG_ML_LCTL);
if (enable) {
- if (((val & mask) >> AZX_MLCTL_CPA_SHIFT))
+ if (((val & mask) >> AZX_ML_LCTL_CPA_SHIFT))
return 0;
} else {
- if (!((val & mask) >> AZX_MLCTL_CPA_SHIFT))
+ if (!((val & mask) >> AZX_ML_LCTL_CPA_SHIFT))
return 0;
}
udelay(3);
@@ -186,26 +190,26 @@ static int check_hdac_link_power_active(struct hdac_ext_link *link, bool enable)
/**
* snd_hdac_ext_bus_link_power_up -power up hda link
- * @link: HD-audio extended link
+ * @hlink: HD-audio extended link
*/
-int snd_hdac_ext_bus_link_power_up(struct hdac_ext_link *link)
+int snd_hdac_ext_bus_link_power_up(struct hdac_ext_link *hlink)
{
- snd_hdac_updatel(link->ml_addr, AZX_REG_ML_LCTL,
- AZX_MLCTL_SPA, AZX_MLCTL_SPA);
+ snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL,
+ AZX_ML_LCTL_SPA, AZX_ML_LCTL_SPA);
- return check_hdac_link_power_active(link, true);
+ return check_hdac_link_power_active(hlink, true);
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up);
/**
* snd_hdac_ext_bus_link_power_down -power down hda link
- * @link: HD-audio extended link
+ * @hlink: HD-audio extended link
*/
-int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *link)
+int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *hlink)
{
- snd_hdac_updatel(link->ml_addr, AZX_REG_ML_LCTL, AZX_MLCTL_SPA, 0);
+ snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL, AZX_ML_LCTL_SPA, 0);
- return check_hdac_link_power_active(link, false);
+ return check_hdac_link_power_active(hlink, false);
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down);
@@ -219,9 +223,7 @@ int snd_hdac_ext_bus_link_power_up_all(struct hdac_bus *bus)
int ret;
list_for_each_entry(hlink, &bus->hlink_list, list) {
- snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL,
- AZX_MLCTL_SPA, AZX_MLCTL_SPA);
- ret = check_hdac_link_power_active(hlink, true);
+ ret = snd_hdac_ext_bus_link_power_up(hlink);
if (ret < 0)
return ret;
}
@@ -240,9 +242,7 @@ int snd_hdac_ext_bus_link_power_down_all(struct hdac_bus *bus)
int ret;
list_for_each_entry(hlink, &bus->hlink_list, list) {
- snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL,
- AZX_MLCTL_SPA, 0);
- ret = check_hdac_link_power_active(hlink, false);
+ ret = snd_hdac_ext_bus_link_power_down(hlink);
if (ret < 0)
return ret;
}
@@ -251,8 +251,32 @@ int snd_hdac_ext_bus_link_power_down_all(struct hdac_bus *bus)
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down_all);
+/**
+ * snd_hdac_ext_bus_link_set_stream_id - maps stream id to link output
+ * @link: HD-audio ext link to set up
+ * @stream: stream id
+ */
+void snd_hdac_ext_bus_link_set_stream_id(struct hdac_ext_link *link,
+ int stream)
+{
+ snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_set_stream_id);
+
+/**
+ * snd_hdac_ext_bus_link_clear_stream_id - maps stream id to link output
+ * @link: HD-audio ext link to set up
+ * @stream: stream id
+ */
+void snd_hdac_ext_bus_link_clear_stream_id(struct hdac_ext_link *link,
+ int stream)
+{
+ snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 0);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_clear_stream_id);
+
int snd_hdac_ext_bus_link_get(struct hdac_bus *bus,
- struct hdac_ext_link *link)
+ struct hdac_ext_link *hlink)
{
unsigned long codec_mask;
int ret = 0;
@@ -263,19 +287,19 @@ int snd_hdac_ext_bus_link_get(struct hdac_bus *bus,
* if we move from 0 to 1, count will be 1 so power up this link
* as well, also check the dma status and trigger that
*/
- if (++link->ref_count == 1) {
+ if (++hlink->ref_count == 1) {
if (!bus->cmd_dma_state) {
snd_hdac_bus_init_cmd_io(bus);
bus->cmd_dma_state = true;
}
- ret = snd_hdac_ext_bus_link_power_up(link);
+ ret = snd_hdac_ext_bus_link_power_up(hlink);
/*
* clear the register to invalidate all the output streams
*/
- snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV,
- ML_LOSIDV_STREAM_MASK, 0);
+ snd_hdac_updatew(hlink->ml_addr, AZX_REG_ML_LOSIDV,
+ AZX_ML_LOSIDV_STREAM_MASK, 0);
/*
* wait for 521usec for codec to report status
* HDA spec section 4.3 - Codec Discovery
@@ -294,10 +318,10 @@ int snd_hdac_ext_bus_link_get(struct hdac_bus *bus,
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_get);
int snd_hdac_ext_bus_link_put(struct hdac_bus *bus,
- struct hdac_ext_link *link)
+ struct hdac_ext_link *hlink)
{
int ret = 0;
- struct hdac_ext_link *hlink;
+ struct hdac_ext_link *hlink_tmp;
bool link_up = false;
mutex_lock(&bus->lock);
@@ -306,15 +330,15 @@ int snd_hdac_ext_bus_link_put(struct hdac_bus *bus,
* if we move from 1 to 0, count will be 0
* so power down this link as well
*/
- if (--link->ref_count == 0) {
- ret = snd_hdac_ext_bus_link_power_down(link);
+ if (--hlink->ref_count == 0) {
+ ret = snd_hdac_ext_bus_link_power_down(hlink);
/*
* now check if all links are off, if so turn off
* cmd dma as well
*/
- list_for_each_entry(hlink, &bus->hlink_list, list) {
- if (hlink->ref_count) {
+ list_for_each_entry(hlink_tmp, &bus->hlink_list, list) {
+ if (hlink_tmp->ref_count) {
link_up = true;
break;
}
@@ -330,3 +354,40 @@ int snd_hdac_ext_bus_link_put(struct hdac_bus *bus,
return ret;
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_put);
+
+static void hdac_ext_codec_link_up(struct hdac_device *codec)
+{
+ const char *devname = dev_name(&codec->dev);
+ struct hdac_ext_link *hlink =
+ snd_hdac_ext_bus_get_hlink_by_name(codec->bus, devname);
+
+ if (hlink)
+ snd_hdac_ext_bus_link_get(codec->bus, hlink);
+}
+
+static void hdac_ext_codec_link_down(struct hdac_device *codec)
+{
+ const char *devname = dev_name(&codec->dev);
+ struct hdac_ext_link *hlink =
+ snd_hdac_ext_bus_get_hlink_by_name(codec->bus, devname);
+
+ if (hlink)
+ snd_hdac_ext_bus_link_put(codec->bus, hlink);
+}
+
+void snd_hdac_ext_bus_link_power(struct hdac_device *codec, bool enable)
+{
+ struct hdac_bus *bus = codec->bus;
+ bool oldstate = test_bit(codec->addr, &bus->codec_powered);
+
+ if (enable == oldstate)
+ return;
+
+ snd_hdac_bus_link_power(codec, enable);
+
+ if (enable)
+ hdac_ext_codec_link_up(codec);
+ else
+ hdac_ext_codec_link_down(codec);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.