[alsa-devel] [PATCH v3 3/5] ALSA: hda - hdmi: Refactor hdmi_eld into parsed_hdmi_eld
David Henningsson
david.henningsson at canonical.com
Tue Feb 19 11:51:12 CET 2013
For better readability, the information that is parsed out of the
ELD data is now put into a separate parsed_hdmi_eld struct.
Signed-off-by: David Henningsson <david.henningsson at canonical.com>
---
sound/pci/hda/hda_eld.c | 41 ++++++++++++++++++++++-------------------
sound/pci/hda/hda_local.h | 22 +++++++++++++---------
sound/pci/hda/patch_hdmi.c | 12 ++++++------
3 files changed, 41 insertions(+), 34 deletions(-)
diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index 4c054f4..aecda72 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -246,8 +246,8 @@ static void hdmi_update_short_audio_desc(struct cea_sad *a,
/*
* Be careful, ELD buf could be totally rubbish!
*/
-static int hdmi_update_eld(struct hdmi_eld *e,
- const unsigned char *buf, int size)
+static int hdmi_parse_eld(struct parsed_hdmi_eld *e,
+ const unsigned char *buf, int size)
{
int mnl;
int i;
@@ -260,7 +260,6 @@ static int hdmi_update_eld(struct hdmi_eld *e,
goto out_fail;
}
- e->eld_size = size;
e->baseline_len = GRAB_BITS(buf, 2, 0, 8);
mnl = GRAB_BITS(buf, 4, 0, 5);
e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3);
@@ -305,7 +304,6 @@ static int hdmi_update_eld(struct hdmi_eld *e,
if (!e->spk_alloc)
e->spk_alloc = 0xffff;
- e->eld_valid = true;
return 0;
out_fail:
@@ -328,7 +326,7 @@ int snd_hdmi_get_eld(struct hdmi_eld *eld,
/*
* ELD size is initialized to zero in caller function. If no errors and
- * ELD is valid, actual eld_size is assigned in hdmi_update_eld()
+ * ELD is valid, actual eld_size is assigned.
*/
size = snd_hdmi_get_eld_size(codec, nid);
@@ -372,8 +370,11 @@ int snd_hdmi_get_eld(struct hdmi_eld *eld,
buf[i] = val;
}
- ret = hdmi_update_eld(eld, buf, size);
+ if ((ret = hdmi_parse_eld(&eld->info, buf, size)) < 0)
+ goto error;
+ eld->eld_size = size;
+ eld->eld_valid = true;
error:
return ret;
}
@@ -438,7 +439,7 @@ void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen)
buf[j] = '\0'; /* necessary when j == 0 */
}
-void snd_hdmi_show_eld(struct hdmi_eld *e)
+void snd_hdmi_show_eld(struct parsed_hdmi_eld *e)
{
int i;
@@ -487,10 +488,11 @@ static void hdmi_print_sad_info(int i, struct cea_sad *a,
static void hdmi_print_eld_info(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
- struct hdmi_eld *e = entry->private_data;
+ struct hdmi_eld *eld = entry->private_data;
+ struct parsed_hdmi_eld *e = &eld->info;
char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
int i;
- static char *eld_versoin_names[32] = {
+ static char *eld_version_names[32] = {
"reserved",
"reserved",
"CEA-861D or below",
@@ -505,15 +507,15 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry,
[4 ... 7] = "reserved"
};
- snd_iprintf(buffer, "monitor_present\t\t%d\n", e->monitor_present);
- snd_iprintf(buffer, "eld_valid\t\t%d\n", e->eld_valid);
- if (!e->eld_valid)
+ snd_iprintf(buffer, "monitor_present\t\t%d\n", eld->monitor_present);
+ snd_iprintf(buffer, "eld_valid\t\t%d\n", eld->eld_valid);
+ if (!eld->eld_valid)
return;
snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name);
snd_iprintf(buffer, "connection_type\t\t%s\n",
eld_connection_type_names[e->conn_type]);
snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver,
- eld_versoin_names[e->eld_ver]);
+ eld_version_names[e->eld_ver]);
snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver,
cea_edid_version_names[e->cea_edid_ver]);
snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id);
@@ -535,7 +537,8 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry,
static void hdmi_write_eld_info(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
- struct hdmi_eld *e = entry->private_data;
+ struct hdmi_eld *eld = entry->private_data;
+ struct parsed_hdmi_eld *e = &eld->info;
char line[64];
char name[64];
char *sname;
@@ -551,9 +554,9 @@ static void hdmi_write_eld_info(struct snd_info_entry *entry,
* eld_version edid_version
*/
if (!strcmp(name, "monitor_present"))
- e->monitor_present = val;
+ eld->monitor_present = val;
else if (!strcmp(name, "eld_valid"))
- e->eld_valid = val;
+ eld->eld_valid = val;
else if (!strcmp(name, "connection_type"))
e->conn_type = val;
else if (!strcmp(name, "port_id"))
@@ -627,7 +630,7 @@ void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld)
#endif /* CONFIG_PROC_FS */
/* update PCM info based on ELD */
-void snd_hdmi_eld_update_pcm_info(struct hdmi_eld *eld,
+void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e,
struct hda_pcm_stream *hinfo)
{
u32 rates;
@@ -644,8 +647,8 @@ void snd_hdmi_eld_update_pcm_info(struct hdmi_eld *eld,
formats = SNDRV_PCM_FMTBIT_S16_LE;
maxbps = 16;
channels_max = 2;
- for (i = 0; i < eld->sad_count; i++) {
- struct cea_sad *a = &eld->sad[i];
+ for (i = 0; i < e->sad_count; i++) {
+ struct cea_sad *a = &e->sad[i];
rates |= a->rates;
if (a->channels > channels_max)
channels_max = a->channels;
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 05f1d59..11fd5f5 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -713,10 +713,10 @@ struct cea_sad {
/*
* ELD: EDID Like Data
*/
-struct hdmi_eld {
- bool monitor_present;
- bool eld_valid;
- int eld_size;
+struct parsed_hdmi_eld {
+ /*
+ * all fields will be cleared before updating ELD
+ */
int baseline_len;
int eld_ver;
int cea_edid_ver;
@@ -731,10 +731,14 @@ struct hdmi_eld {
int spk_alloc;
int sad_count;
struct cea_sad sad[ELD_MAX_SAD];
- /*
- * all fields above eld_buffer will be cleared before updating ELD
- */
+};
+
+struct hdmi_eld {
+ bool monitor_present;
+ bool eld_valid;
+ int eld_size;
char eld_buffer[ELD_MAX_SIZE];
+ struct parsed_hdmi_eld info;
#ifdef CONFIG_PROC_FS
struct snd_info_entry *proc_entry;
#endif
@@ -742,8 +746,8 @@ struct hdmi_eld {
int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
int snd_hdmi_get_eld(struct hdmi_eld *, struct hda_codec *, hda_nid_t);
-void snd_hdmi_show_eld(struct hdmi_eld *eld);
-void snd_hdmi_eld_update_pcm_info(struct hdmi_eld *eld,
+void snd_hdmi_show_eld(struct parsed_hdmi_eld *e);
+void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e,
struct hda_pcm_stream *hinfo);
#ifdef CONFIG_PROC_FS
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 7a73dfb..2ac6635 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -529,7 +529,7 @@ static int hdmi_channel_allocation(struct hdmi_eld *eld, int channels)
* expand ELD's notions to match the ones used by Audio InfoFrame.
*/
for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
- if (eld->spk_alloc & (1 << i))
+ if (eld->info.spk_alloc & (1 << i))
spk_mask |= eld_speaker_allocation_bits[i];
}
@@ -543,7 +543,7 @@ static int hdmi_channel_allocation(struct hdmi_eld *eld, int channels)
}
}
- snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
+ snd_print_channel_allocation(eld->info.spk_alloc, buf, sizeof(buf));
snd_printdd("HDMI: select CA 0x%x for %d-channel allocation: %s\n",
ca, channels, buf);
@@ -884,7 +884,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, int pin_idx,
ca = 0;
memset(&ai, 0, sizeof(ai));
- if (eld->conn_type == 0) { /* HDMI */
+ if (eld->info.conn_type == 0) { /* HDMI */
struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi;
hdmi_ai->type = 0x84;
@@ -893,7 +893,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, int pin_idx,
hdmi_ai->CC02_CT47 = channels - 1;
hdmi_ai->CA = ca;
hdmi_checksum_audio_infoframe(hdmi_ai);
- } else if (eld->conn_type == 1) { /* DisplayPort */
+ } else if (eld->info.conn_type == 1) { /* DisplayPort */
struct dp_audio_infoframe *dp_ai = &ai.dp;
dp_ai->type = 0x84;
@@ -1114,7 +1114,7 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
/* Restrict capabilities by ELD if this isn't disabled */
if (!static_hdmi_pcm && eld->eld_valid) {
- snd_hdmi_eld_update_pcm_info(eld, hinfo);
+ snd_hdmi_eld_update_pcm_info(&eld->info, hinfo);
if (hinfo->channels_min > hinfo->channels_max ||
!hinfo->rates || !hinfo->formats) {
per_cvt->assigned = 0;
@@ -1188,7 +1188,7 @@ static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
eld->eld_valid = false;
if (eld_valid) {
if (!snd_hdmi_get_eld(eld, codec, pin_nid))
- snd_hdmi_show_eld(eld);
+ snd_hdmi_show_eld(&eld->info);
else if (repoll) {
queue_delayed_work(codec->bus->workq,
&per_pin->work,
--
1.7.9.5
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