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-rw-r--r--target/linux/brcm2708/patches-4.4/0318-Revert-bcm2835-implement-channel-map-API.patch496
1 files changed, 496 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0318-Revert-bcm2835-implement-channel-map-API.patch b/target/linux/brcm2708/patches-4.4/0318-Revert-bcm2835-implement-channel-map-API.patch
new file mode 100644
index 0000000000..d59090c80a
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0318-Revert-bcm2835-implement-channel-map-API.patch
@@ -0,0 +1,496 @@
+From 54dc243ad6ea802967fd4efdb4f75facc19fa950 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 29 Apr 2016 17:29:03 +0100
+Subject: [PATCH 318/381] Revert "bcm2835: implement channel map API"
+
+This reverts commit 5efba3f8c180c39609a8d40033ef92046ef0de75.
+---
+ sound/arm/bcm2835-ctl.c | 299 ----------------------------------------------
+ sound/arm/bcm2835-pcm.c | 69 ++---------
+ sound/arm/bcm2835-vchiq.c | 13 --
+ sound/arm/bcm2835.h | 4 -
+ 4 files changed, 7 insertions(+), 378 deletions(-)
+
+--- a/sound/arm/bcm2835-ctl.c
++++ b/sound/arm/bcm2835-ctl.c
+@@ -327,304 +327,6 @@ static struct snd_kcontrol_new snd_bcm28
+ },
+ };
+
+-struct cea_channel_speaker_allocation {
+- int ca_index;
+- int speakers[8];
+-};
+-
+-#define FL SNDRV_CHMAP_FL
+-#define FR SNDRV_CHMAP_FR
+-#define RL SNDRV_CHMAP_RL
+-#define RR SNDRV_CHMAP_RR
+-#define LFE SNDRV_CHMAP_LFE
+-#define FC SNDRV_CHMAP_FC
+-#define RLC SNDRV_CHMAP_RLC
+-#define RRC SNDRV_CHMAP_RRC
+-#define RC SNDRV_CHMAP_RC
+-#define FLC SNDRV_CHMAP_FLC
+-#define FRC SNDRV_CHMAP_FRC
+-#define FLH SNDRV_CHMAP_TFL
+-#define FRH SNDRV_CHMAP_TFR
+-#define FLW SNDRV_CHMAP_FLW
+-#define FRW SNDRV_CHMAP_FRW
+-#define TC SNDRV_CHMAP_TC
+-#define FCH SNDRV_CHMAP_TFC
+-
+-/*
+- * CEA-861 channel maps
+- *
+- * Stolen from sound/pci/hda/patch_hdmi.c
+- * (unlike the source, this uses SNDRV_* constants directly, as by the
+- * map_tables array in patch_hdmi.c)
+- * Unknown entries use 0, which unfortunately is SNDRV_CHMAP_UNKNOWN instead
+- * of SNDRV_CHMAP_NA.
+- */
+-static struct cea_channel_speaker_allocation channel_allocations[] = {
+-/* channel: 7 6 5 4 3 2 1 0 */
+-{ .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
+- /* 2.1 */
+-{ .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
+- /* Dolby Surround */
+-{ .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
+- /* surround40 */
+-{ .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
+- /* surround41 */
+-{ .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
+- /* surround50 */
+-{ .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
+- /* surround51 */
+-{ .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
+- /* 6.1 */
+-{ .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
+- /* surround71 */
+-{ .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
+-
+-{ .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
+-{ .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
+-{ .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
+-{ .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
+-{ .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
+-{ .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
+-{ .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
+-{ .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
+-{ .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
+-{ .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
+-{ .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
+-{ .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
+-{ .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
+-{ .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
+-{ .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
+-{ .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
+-{ .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
+-{ .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
+-{ .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
+-{ .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x20, .speakers = { 0, FCH, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x21, .speakers = { 0, FCH, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x22, .speakers = { TC, 0, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x23, .speakers = { TC, 0, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x24, .speakers = { FRH, FLH, RR, RL, 0, 0, FR, FL } },
+-{ .ca_index = 0x25, .speakers = { FRH, FLH, RR, RL, 0, LFE, FR, FL } },
+-{ .ca_index = 0x26, .speakers = { FRW, FLW, RR, RL, 0, 0, FR, FL } },
+-{ .ca_index = 0x27, .speakers = { FRW, FLW, RR, RL, 0, LFE, FR, FL } },
+-{ .ca_index = 0x28, .speakers = { TC, RC, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x29, .speakers = { TC, RC, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x2a, .speakers = { FCH, RC, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x2b, .speakers = { FCH, RC, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x2c, .speakers = { TC, FCH, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x2d, .speakers = { TC, FCH, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x2e, .speakers = { FRH, FLH, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x2f, .speakers = { FRH, FLH, RR, RL, FC, LFE, FR, FL } },
+-{ .ca_index = 0x30, .speakers = { FRW, FLW, RR, RL, FC, 0, FR, FL } },
+-{ .ca_index = 0x31, .speakers = { FRW, FLW, RR, RL, FC, LFE, FR, FL } },
+-};
+-
+-static int snd_bcm2835_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag,
+- unsigned int size, unsigned int __user *tlv)
+-{
+- unsigned int __user *dst;
+- int count = 0;
+- int i;
+-
+- if (size < 8)
+- return -ENOMEM;
+- if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv))
+- return -EFAULT;
+- size -= 8;
+- dst = tlv + 2;
+- for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
+- struct cea_channel_speaker_allocation *ch = &channel_allocations[i];
+- int num_chs = 0;
+- int chs_bytes;
+- int c;
+-
+- for (c = 0; c < 8; c++) {
+- if (ch->speakers[c])
+- num_chs++;
+- }
+-
+- chs_bytes = num_chs * 4;
+- if (size < 8)
+- return -ENOMEM;
+- if (put_user(SNDRV_CTL_TLVT_CHMAP_FIXED, dst) ||
+- put_user(chs_bytes, dst + 1))
+- return -EFAULT;
+- dst += 2;
+- size -= 8;
+- count += 8;
+- if (size < chs_bytes)
+- return -ENOMEM;
+- size -= chs_bytes;
+- count += chs_bytes;
+- for (c = 0; c < 8; c++) {
+- int sp = ch->speakers[7 - c];
+- if (sp) {
+- if (put_user(sp, dst))
+- return -EFAULT;
+- dst++;
+- }
+- }
+- }
+- if (put_user(count, tlv + 1))
+- return -EFAULT;
+- return 0;
+-}
+-
+-static int snd_bcm2835_chmap_ctl_get(struct snd_kcontrol *kcontrol,
+- struct snd_ctl_elem_value *ucontrol)
+-{
+- struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+- bcm2835_chip_t *chip = info->private_data;
+- unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
+- struct snd_pcm_substream *substream = snd_pcm_chmap_substream(info, idx);
+- struct cea_channel_speaker_allocation *ch = NULL;
+- int res = 0;
+- int cur = 0;
+- int i;
+-
+- if (mutex_lock_interruptible(&chip->audio_mutex))
+- return -EINTR;
+-
+- if (!substream || !substream->runtime) {
+- res = -ENODEV;
+- goto unlock;
+- }
+-
+- for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
+- if (channel_allocations[i].ca_index == chip->cea_chmap)
+- ch = &channel_allocations[i];
+- }
+-
+- /* If no layout was set yet, return a dummy. Apparently the userspace
+- * API will be confused if we don't. */
+- if (!ch)
+- ch = &channel_allocations[0];
+-
+- for (i = 0; i < 8; i++) {
+- if (ch->speakers[7 - i])
+- ucontrol->value.integer.value[cur++] = ch->speakers[7 - i];
+- }
+- while (cur < 8)
+- ucontrol->value.integer.value[cur++] = SNDRV_CHMAP_NA;
+-
+-unlock:
+- mutex_unlock(&chip->audio_mutex);
+- return res;
+-}
+-
+-static int snd_bcm2835_chmap_ctl_put(struct snd_kcontrol *kcontrol,
+- struct snd_ctl_elem_value *ucontrol)
+-{
+- struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+- bcm2835_chip_t *chip = info->private_data;
+- unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
+- struct snd_pcm_substream *substream = snd_pcm_chmap_substream(info, idx);
+- int i, prepared = 0, cea_chmap = -1;
+- int res = 0;
+- int remap[8];
+-
+- if (mutex_lock_interruptible(&chip->audio_mutex))
+- return -EINTR;
+-
+- if (!substream || !substream->runtime) {
+- res = -ENODEV;
+- goto unlock;
+- }
+-
+- switch (substream->runtime->status->state) {
+- case SNDRV_PCM_STATE_OPEN:
+- case SNDRV_PCM_STATE_SETUP:
+- break;
+- case SNDRV_PCM_STATE_PREPARED:
+- prepared = 1;
+- break;
+- default:
+- res = -EBUSY;
+- goto unlock;
+- }
+-
+- for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
+- struct cea_channel_speaker_allocation *ch = &channel_allocations[i];
+- int matches = 1;
+- int cur = 0;
+- int x;
+- memset(remap, 0, sizeof(remap));
+- for (x = 0; x < substream->runtime->channels; x++) {
+- int sp = ucontrol->value.integer.value[x];
+- while (cur < 8 && !ch->speakers[7 - cur])
+- cur++;
+- if (cur >= 8) {
+- /* user has more channels than ch */
+- matches = 0;
+- break;
+- }
+- if (ch->speakers[7 - cur] != sp) {
+- matches = 0;
+- break;
+- }
+- remap[x] = cur;
+- cur++;
+- }
+- for (x = cur; x < 8; x++) {
+- if (ch->speakers[7 - x]) {
+- /* ch has more channels than user */
+- matches = 0;
+- break;
+- }
+- }
+- if (matches) {
+- cea_chmap = ch->ca_index;
+- break;
+- }
+- }
+-
+- if (cea_chmap < 0) {
+- res = -EINVAL;
+- goto unlock;
+- }
+-
+- /* don't change the layout if another substream is active */
+- if (chip->opened != (1 << substream->number) && chip->cea_chmap != cea_chmap) {
+- res = -EBUSY; /* unsure whether this is a good error code */
+- goto unlock;
+- }
+-
+- chip->cea_chmap = cea_chmap;
+- for (i = 0; i < 8; i++)
+- chip->map_channels[i] = remap[i];
+- if (prepared)
+- snd_bcm2835_pcm_prepare_again(substream);
+-
+-unlock:
+- mutex_unlock(&chip->audio_mutex);
+- return res;
+-}
+-
+-static int snd_bcm2835_add_chmap_ctl(bcm2835_chip_t * chip)
+-{
+- struct snd_pcm_chmap *chmap;
+- struct snd_kcontrol *kctl;
+- int err, i;
+-
+- err = snd_pcm_add_chmap_ctls(chip->pcm,
+- SNDRV_PCM_STREAM_PLAYBACK,
+- NULL, 8, 0, &chmap);
+- if (err < 0)
+- return err;
+- /* override handlers */
+- chmap->private_data = chip;
+- kctl = chmap->kctl;
+- for (i = 0; i < kctl->count; i++)
+- kctl->vd[i].access |= SNDRV_CTL_ELEM_ACCESS_WRITE;
+- kctl->get = snd_bcm2835_chmap_ctl_get;
+- kctl->put = snd_bcm2835_chmap_ctl_put;
+- kctl->tlv.c = snd_bcm2835_chmap_ctl_tlv;
+- return 0;
+-}
+-
+ int snd_bcm2835_new_ctl(bcm2835_chip_t * chip)
+ {
+ int err;
+@@ -638,7 +340,6 @@ int snd_bcm2835_new_ctl(bcm2835_chip_t *
+ if (err < 0)
+ return err;
+ }
+- snd_bcm2835_add_chmap_ctl(chip);
+ for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_spdif); idx++) {
+ err = snd_ctl_add(chip->card,
+ snd_ctl_new1(&snd_bcm2835_spdif[idx], chip));
+--- a/sound/arm/bcm2835-pcm.c
++++ b/sound/arm/bcm2835-pcm.c
+@@ -19,9 +19,6 @@
+
+ #include "bcm2835.h"
+
+-/* The hardware can not do much more num_channels*samplerate then this value */
+-#define MAX_COMBINED_RATE 768000
+-
+ /* hardware definition */
+ static struct snd_pcm_hardware snd_bcm2835_playback_hw = {
+ .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
+@@ -110,31 +107,6 @@ static irqreturn_t bcm2835_playback_fifo
+ return IRQ_HANDLED;
+ }
+
+-
+-static int rate_hw_constraint_rate(struct snd_pcm_hw_params *params,
+- struct snd_pcm_hw_rule *rule)
+-{
+- struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+- struct snd_interval rates = {
+- .min = 8000,
+- .max = min(192000u, MAX_COMBINED_RATE / max(channels->min, 1u)),
+- };
+- struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+- return snd_interval_refine(rate, &rates);
+-}
+-
+-static int rate_hw_constraint_channels(struct snd_pcm_hw_params *params,
+- struct snd_pcm_hw_rule *rule)
+-{
+- struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+- struct snd_interval channels_interval = {
+- .min = 1,
+- .max = min(8u, MAX_COMBINED_RATE / max(rate->min, 1u)),
+- };
+- struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+- return snd_interval_refine(channels, &channels_interval);
+-}
+-
+ /* open callback */
+ static int snd_bcm2835_playback_open_generic(
+ struct snd_pcm_substream *substream, int spdif)
+@@ -216,24 +188,8 @@ static int snd_bcm2835_playback_open_gen
+ snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+ 16);
+
+- /* When playing PCM, pretend that we support the full range of channels
+- * and sample rates. The GPU can't output it, but is able to resample
+- * the data to a rate the hardware can handle it. This won't work with
+- * compressed data; the resampler would just destroy it. */
+- if (spdif) {
+- err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+- rate_hw_constraint_rate, NULL,
+- SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+- err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+- rate_hw_constraint_channels, NULL,
+- SNDRV_PCM_HW_PARAM_RATE, -1);
+- }
+-
+ chip->alsa_stream[idx] = alsa_stream;
+
+- if (!chip->opened)
+- chip->cea_chmap = -1;
+-
+ chip->opened |= (1 << idx);
+ alsa_stream->open = 1;
+ alsa_stream->draining = 1;
+@@ -344,7 +300,8 @@ static int snd_bcm2835_pcm_hw_free(struc
+ return snd_pcm_lib_free_pages(substream);
+ }
+
+-int snd_bcm2835_pcm_prepare_again(struct snd_pcm_substream *substream)
++/* prepare callback */
++static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream)
+ {
+ bcm2835_chip_t *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+@@ -352,6 +309,11 @@ int snd_bcm2835_pcm_prepare_again(struct
+ int channels;
+ int err;
+
++ audio_info(" .. IN\n");
++
++ if (mutex_lock_interruptible(&chip->audio_mutex))
++ return -EINTR;
++
+ /* notify the vchiq that it should enter spdif passthrough mode by
+ * setting channels=0 (see
+ * https://github.com/raspberrypi/linux/issues/528) */
+@@ -367,23 +329,6 @@ int snd_bcm2835_pcm_prepare_again(struct
+ audio_error(" error setting hw params\n");
+ }
+
+- return err;
+-}
+-
+-/* prepare callback */
+-static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream)
+-{
+- bcm2835_chip_t *chip = snd_pcm_substream_chip(substream);
+- struct snd_pcm_runtime *runtime = substream->runtime;
+- bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+-
+- audio_info(" .. IN\n");
+-
+- if (mutex_lock_interruptible(&chip->audio_mutex))
+- return -EINTR;
+-
+- snd_bcm2835_pcm_prepare_again(substream);
+-
+ bcm2835_audio_setup(alsa_stream);
+
+ /* in preparation of the stream, set the controls (volume level) of the stream */
+--- a/sound/arm/bcm2835-vchiq.c
++++ b/sound/arm/bcm2835-vchiq.c
+@@ -570,8 +570,6 @@ int bcm2835_audio_set_params(bcm2835_als
+ VC_AUDIO_MSG_T m;
+ AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+ int32_t success;
+- uint32_t chmap_value;
+- int i;
+ int ret;
+ LOG_DBG(" .. IN\n");
+
+@@ -595,21 +593,10 @@ int bcm2835_audio_set_params(bcm2835_als
+
+ instance->result = -1;
+
+- if (alsa_stream->chip->cea_chmap >= 0) {
+- chmap_value = (unsigned)alsa_stream->chip->cea_chmap << 24;
+- } else {
+- chmap_value = 0; /* force stereo */
+- for (i = 0; i < 8; i++)
+- alsa_stream->chip->map_channels[i] = i;
+- }
+- for (i = 0; i < 8; i++)
+- chmap_value |= alsa_stream->chip->map_channels[i] << (i * 3);
+-
+ m.type = VC_AUDIO_MSG_TYPE_CONFIG;
+ m.u.config.channels = channels;
+ m.u.config.samplerate = samplerate;
+ m.u.config.bps = bps;
+- m.u.config.channelmap = chmap_value;
+
+ /* Create the message available completion */
+ init_completion(&instance->msg_avail_comp);
+--- a/sound/arm/bcm2835.h
++++ b/sound/arm/bcm2835.h
+@@ -107,8 +107,6 @@ typedef struct bcm2835_chip {
+ int old_volume; /* stores the volume value whist muted */
+ int dest;
+ int mute;
+- int cea_chmap; /* currently requested Audio InfoFrame Data Byte 4 */
+- int map_channels[8];
+
+ unsigned int opened;
+ unsigned int spdif_status;
+@@ -151,8 +149,6 @@ int snd_bcm2835_new_ctl(bcm2835_chip_t *
+ int snd_bcm2835_new_pcm(bcm2835_chip_t * chip);
+ int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip);
+
+-int snd_bcm2835_pcm_prepare_again(struct snd_pcm_substream *substream);
+-
+ int bcm2835_audio_open(bcm2835_alsa_stream_t * alsa_stream);
+ int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream);
+ int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 03:25:12 +0000