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-rw-r--r--include/sound/hdaudio.h2
-rw-r--r--sound/hda/hdac_device.c26
-rw-r--r--sound/pci/hda/hda_codec.c4
-rw-r--r--sound/pci/hda/hda_proc.c28
4 files changed, 43 insertions, 17 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index ddfcc44..65ea642 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -107,6 +107,8 @@ int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
unsigned int verb, unsigned int parm, unsigned int *res);
int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
unsigned int *res);
+int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
+ int parm);
int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
hda_nid_t *conn_list, int max_conns);
int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
index ba9c1fc..0dac746 100644
--- a/sound/hda/hdac_device.c
+++ b/sound/hda/hdac_device.c
@@ -250,19 +250,43 @@ int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
/**
+ * snd_hdac_read_parm_uncached - read a codec parameter without caching
+ * @codec: the codec object
+ * @nid: NID to read a parameter
+ * @parm: parameter to read
+ *
+ * Returns -1 for error. If you need to distinguish the error more
+ * strictly, use snd_hdac_read() directly.
+ */
+int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
+ int parm)
+{
+ int val;
+
+ if (codec->regmap)
+ regcache_cache_bypass(codec->regmap, true);
+ val = snd_hdac_read_parm(codec, nid, parm);
+ if (codec->regmap)
+ regcache_cache_bypass(codec->regmap, false);
+ return val;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
+
+/**
* snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
* @codec: the codec object
* @nid: NID to inspect
* @start_id: the pointer to store the starting NID
*
* Returns the number of subtree nodes or zero if not found.
+ * This function reads parameters always without caching.
*/
int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
hda_nid_t *start_id)
{
unsigned int parm;
- parm = snd_hdac_read_parm(codec, nid, AC_PAR_NODE_COUNT);
+ parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
if (parm == -1) {
*start_id = 0;
return 0;
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 8eb42f4..39b5660 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -586,8 +586,8 @@ static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
return -ENOMEM;
nid = codec->core.start_nid;
for (i = 0; i < codec->core.num_nodes; i++, nid++)
- codec->wcaps[i] = snd_hda_param_read(codec, nid,
- AC_PAR_AUDIO_WIDGET_CAP);
+ codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
+ nid, AC_PAR_AUDIO_WIDGET_CAP);
return 0;
}
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index a4f5a30..ee62307 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -32,6 +32,10 @@ static int dump_coef = -1;
module_param(dump_coef, int, 0644);
MODULE_PARM_DESC(dump_coef, "Dump processing coefficients in codec proc file (-1=auto, 0=disable, 1=enable)");
+/* always use noncached version */
+#define param_read(codec, nid, parm) \
+ snd_hdac_read_parm_uncached(&(codec)->core, nid, parm)
+
static char *bits_names(unsigned int bits, char *names[], int size)
{
int i, n;
@@ -119,9 +123,8 @@ static void print_amp_caps(struct snd_info_buffer *buffer,
struct hda_codec *codec, hda_nid_t nid, int dir)
{
unsigned int caps;
- caps = snd_hda_param_read(codec, nid,
- dir == HDA_OUTPUT ?
- AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
+ caps = param_read(codec, nid, dir == HDA_OUTPUT ?
+ AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
if (caps == -1 || caps == 0) {
snd_iprintf(buffer, "N/A\n");
return;
@@ -225,8 +228,8 @@ static void print_pcm_formats(struct snd_info_buffer *buffer,
static void print_pcm_caps(struct snd_info_buffer *buffer,
struct hda_codec *codec, hda_nid_t nid)
{
- unsigned int pcm = snd_hda_param_read(codec, nid, AC_PAR_PCM);
- unsigned int stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
+ unsigned int pcm = param_read(codec, nid, AC_PAR_PCM);
+ unsigned int stream = param_read(codec, nid, AC_PAR_STREAM);
if (pcm == -1 || stream == -1) {
snd_iprintf(buffer, "N/A\n");
return;
@@ -273,7 +276,7 @@ static void print_pin_caps(struct snd_info_buffer *buffer,
static char *jack_conns[4] = { "Jack", "N/A", "Fixed", "Both" };
unsigned int caps, val;
- caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
+ caps = param_read(codec, nid, AC_PAR_PIN_CAP);
snd_iprintf(buffer, " Pincap 0x%08x:", caps);
if (caps & AC_PINCAP_IN)
snd_iprintf(buffer, " IN");
@@ -401,8 +404,7 @@ static void print_pin_ctls(struct snd_info_buffer *buffer,
static void print_vol_knob(struct snd_info_buffer *buffer,
struct hda_codec *codec, hda_nid_t nid)
{
- unsigned int cap = snd_hda_param_read(codec, nid,
- AC_PAR_VOL_KNB_CAP);
+ unsigned int cap = param_read(codec, nid, AC_PAR_VOL_KNB_CAP);
snd_iprintf(buffer, " Volume-Knob: delta=%d, steps=%d, ",
(cap >> 7) & 1, cap & 0x7f);
cap = snd_hda_codec_read(codec, nid, 0,
@@ -487,7 +489,7 @@ static void print_power_state(struct snd_info_buffer *buffer,
[ilog2(AC_PWRST_EPSS)] = "EPSS",
};
- int sup = snd_hda_param_read(codec, nid, AC_PAR_POWER_STATE);
+ int sup = param_read(codec, nid, AC_PAR_POWER_STATE);
int pwr = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_POWER_STATE, 0);
if (sup != -1)
@@ -531,8 +533,7 @@ static void print_proc_caps(struct snd_info_buffer *buffer,
struct hda_codec *codec, hda_nid_t nid)
{
unsigned int i, ncoeff, oldindex;
- unsigned int proc_caps = snd_hda_param_read(codec, nid,
- AC_PAR_PROC_CAP);
+ unsigned int proc_caps = param_read(codec, nid, AC_PAR_PROC_CAP);
ncoeff = (proc_caps & AC_PCAP_NUM_COEF) >> AC_PCAP_NUM_COEF_SHIFT;
snd_iprintf(buffer, " Processing caps: benign=%d, ncoeff=%d\n",
proc_caps & AC_PCAP_BENIGN, ncoeff);
@@ -597,7 +598,7 @@ static void print_gpio(struct snd_info_buffer *buffer,
struct hda_codec *codec, hda_nid_t nid)
{
unsigned int gpio =
- snd_hda_param_read(codec, codec->core.afg, AC_PAR_GPIO_CAP);
+ param_read(codec, codec->core.afg, AC_PAR_GPIO_CAP);
unsigned int enable, direction, wake, unsol, sticky, data;
int i, max;
snd_iprintf(buffer, "GPIO: io=%d, o=%d, i=%d, "
@@ -727,8 +728,7 @@ static void print_codec_info(struct snd_info_entry *entry,
for (i = 0; i < nodes; i++, nid++) {
unsigned int wid_caps =
- snd_hda_param_read(codec, nid,
- AC_PAR_AUDIO_WIDGET_CAP);
+ param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
unsigned int wid_type = get_wcaps_type(wid_caps);
hda_nid_t *conn = NULL;
int conn_len = 0;
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