diff options
Diffstat (limited to 'sound/soc/soc-dapm.c')
| -rw-r--r-- | sound/soc/soc-dapm.c | 498 |
1 files changed, 407 insertions, 91 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 21c69074aa1..0d8b08ef873 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -37,6 +37,7 @@ #include <linux/bitops.h> #include <linux/platform_device.h> #include <linux/jiffies.h> +#include <linux/debugfs.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -52,19 +53,41 @@ /* dapm power sequences - make this per codec in the future */ static int dapm_up_seq[] = { - snd_soc_dapm_pre, snd_soc_dapm_supply, snd_soc_dapm_micbias, - snd_soc_dapm_mic, snd_soc_dapm_mux, snd_soc_dapm_value_mux, - snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl, - snd_soc_dapm_pga, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, - snd_soc_dapm_post + [snd_soc_dapm_pre] = 0, + [snd_soc_dapm_supply] = 1, + [snd_soc_dapm_micbias] = 2, + [snd_soc_dapm_aif_in] = 3, + [snd_soc_dapm_aif_out] = 3, + [snd_soc_dapm_mic] = 4, + [snd_soc_dapm_mux] = 5, + [snd_soc_dapm_value_mux] = 5, + [snd_soc_dapm_dac] = 6, + [snd_soc_dapm_mixer] = 7, + [snd_soc_dapm_mixer_named_ctl] = 7, + [snd_soc_dapm_pga] = 8, + [snd_soc_dapm_adc] = 9, + [snd_soc_dapm_hp] = 10, + [snd_soc_dapm_spk] = 10, + [snd_soc_dapm_post] = 11, }; static int dapm_down_seq[] = { - snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, - snd_soc_dapm_pga, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_mixer, - snd_soc_dapm_dac, snd_soc_dapm_mic, snd_soc_dapm_micbias, - snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_supply, - snd_soc_dapm_post + [snd_soc_dapm_pre] = 0, + [snd_soc_dapm_adc] = 1, + [snd_soc_dapm_hp] = 2, + [snd_soc_dapm_spk] = 2, + [snd_soc_dapm_pga] = 4, + [snd_soc_dapm_mixer_named_ctl] = 5, + [snd_soc_dapm_mixer] = 5, + [snd_soc_dapm_dac] = 6, + [snd_soc_dapm_mic] = 7, + [snd_soc_dapm_micbias] = 8, + [snd_soc_dapm_mux] = 9, + [snd_soc_dapm_value_mux] = 9, + [snd_soc_dapm_aif_in] = 10, + [snd_soc_dapm_aif_out] = 10, + [snd_soc_dapm_supply] = 11, + [snd_soc_dapm_post] = 12, }; static void pop_wait(u32 pop_time) @@ -130,8 +153,12 @@ static int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, if (card->set_bias_level) ret = card->set_bias_level(card, level); - if (ret == 0 && codec->set_bias_level) - ret = codec->set_bias_level(codec, level); + if (ret == 0) { + if (codec->set_bias_level) + ret = codec->set_bias_level(codec, level); + else + codec->bias_level = level; + } return ret; } @@ -206,6 +233,8 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w, case snd_soc_dapm_micbias: case snd_soc_dapm_vmid: case snd_soc_dapm_supply: + case snd_soc_dapm_aif_in: + case snd_soc_dapm_aif_out: p->connect = 1; break; /* does effect routing - dynamically connected */ @@ -268,7 +297,7 @@ static int dapm_connect_mixer(struct snd_soc_codec *codec, static int dapm_update_bits(struct snd_soc_dapm_widget *widget) { int change, power; - unsigned short old, new; + unsigned int old, new; struct snd_soc_codec *codec = widget->codec; /* check for valid widgets */ @@ -479,8 +508,14 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) if (widget->id == snd_soc_dapm_supply) return 0; - if (widget->id == snd_soc_dapm_adc && widget->active) - return 1; + switch (widget->id) { + case snd_soc_dapm_adc: + case snd_soc_dapm_aif_out: + if (widget->active) + return 1; + default: + break; + } if (widget->connected) { /* connected pin ? */ @@ -519,8 +554,14 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) return 0; /* active stream ? */ - if (widget->id == snd_soc_dapm_dac && widget->active) - return 1; + switch (widget->id) { + case snd_soc_dapm_dac: + case snd_soc_dapm_aif_in: + if (widget->active) + return 1; + default: + break; + } if (widget->connected) { /* connected pin ? */ @@ -689,53 +730,211 @@ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) return power; } -/* - * Scan a single DAPM widget for a complete audio path and update the - * power status appropriately. - */ -static int dapm_power_widget(struct snd_soc_codec *codec, int event, - struct snd_soc_dapm_widget *w) +static int dapm_seq_compare(struct snd_soc_dapm_widget *a, + struct snd_soc_dapm_widget *b, + int sort[]) { - int ret; + if (sort[a->id] != sort[b->id]) + return sort[a->id] - sort[b->id]; + if (a->reg != b->reg) + return a->reg - b->reg; - switch (w->id) { - case snd_soc_dapm_pre: - if (!w->event) - return 0; + return 0; +} - if (event == SND_SOC_DAPM_STREAM_START) { - ret = w->event(w, - NULL, SND_SOC_DAPM_PRE_PMU); +/* Insert a widget in order into a DAPM power sequence. */ +static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, + struct list_head *list, + int sort[]) +{ + struct snd_soc_dapm_widget *w; + + list_for_each_entry(w, list, power_list) + if (dapm_seq_compare(new_widget, w, sort) < 0) { + list_add_tail(&new_widget->power_list, &w->power_list); + return; + } + + list_add_tail(&new_widget->power_list, list); +} + +/* Apply the coalesced changes from a DAPM sequence */ +static void dapm_seq_run_coalesced(struct snd_soc_codec *codec, + struct list_head *pending) +{ + struct snd_soc_dapm_widget *w; + int reg, power, ret; + unsigned int value = 0; + unsigned int mask = 0; + unsigned int cur_mask; + + reg = list_first_entry(pending, struct snd_soc_dapm_widget, + power_list)->reg; + + list_for_each_entry(w, pending, power_list) { + cur_mask = 1 << w->shift; + BUG_ON(reg != w->reg); + + if (w->invert) + power = !w->power; + else + power = w->power; + + mask |= cur_mask; + if (power) + value |= cur_mask; + + pop_dbg(codec->pop_time, + "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", + w->name, reg, value, mask); + + /* power up pre event */ + if (w->power && w->event && + (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { + pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n", + w->name); + ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); if (ret < 0) - return ret; - } else if (event == SND_SOC_DAPM_STREAM_STOP) { - ret = w->event(w, - NULL, SND_SOC_DAPM_PRE_PMD); + pr_err("%s: pre event failed: %d\n", + w->name, ret); + } + + /* power down pre event */ + if (!w->power && w->event && + (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { + pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n", + w->name); + ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); if (ret < 0) - return ret; + pr_err("%s: pre event failed: %d\n", + w->name, ret); } - return 0; - case snd_soc_dapm_post: - if (!w->event) - return 0; + /* Lower PGA volume to reduce pops */ + if (w->id == snd_soc_dapm_pga && !w->power) + dapm_set_pga(w, w->power); + } - if (event == SND_SOC_DAPM_STREAM_START) { + if (reg >= 0) { + pop_dbg(codec->pop_time, + "pop test : Applying 0x%x/0x%x to %x in %dms\n", + value, mask, reg, codec->pop_time); + pop_wait(codec->pop_time); + snd_soc_update_bits(codec, reg, mask, value); + } + + list_for_each_entry(w, pending, power_list) { + /* Raise PGA volume to reduce pops */ + if (w->id == snd_soc_dapm_pga && w->power) + dapm_set_pga(w, w->power); + + /* power up post event */ + if (w->power && w->event && + (w->event_flags & SND_SOC_DAPM_POST_PMU)) { + pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n", + w->name); ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMU); if (ret < 0) - return ret; - } else if (event == SND_SOC_DAPM_STREAM_STOP) { - ret = w->event(w, - NULL, SND_SOC_DAPM_POST_PMD); + pr_err("%s: post event failed: %d\n", + w->name, ret); + } + + /* power down post event */ + if (!w->power && w->event && + (w->event_flags & SND_SOC_DAPM_POST_PMD)) { + pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n", + w->name); + ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); if (ret < 0) - return ret; + pr_err("%s: post event failed: %d\n", + w->name, ret); } - return 0; + } +} - default: - return dapm_generic_apply_power(w); +/* Apply a DAPM power sequence. + * + * We walk over a pre-sorted list of widgets to apply power to. In + * order to minimise the number of writes to the device required + * multiple widgets will be updated in a single write where possible. + * Currently anything that requires more than a single write is not + * handled. + */ +static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list, + int event, int sort[]) +{ + struct snd_soc_dapm_widget *w, *n; + LIST_HEAD(pending); + int cur_sort = -1; + int cur_reg = SND_SOC_NOPM; + int ret; + + list_for_each_entry_safe(w, n, list, power_list) { + ret = 0; + + /* Do we need to apply any queued changes? */ + if (sort[w->id] != cur_sort || w->reg != cur_reg) { + if (!list_empty(&pending)) + dapm_seq_run_coalesced(codec, &pending); + + INIT_LIST_HEAD(&pending); + cur_sort = -1; + cur_reg = SND_SOC_NOPM; + } + + switch (w->id) { + case snd_soc_dapm_pre: + if (!w->event) + list_for_each_entry_safe_continue(w, n, list, + power_list); + + if (event == SND_SOC_DAPM_STREAM_START) + ret = w->event(w, + NULL, SND_SOC_DAPM_PRE_PMU); + else if (event == SND_SOC_DAPM_STREAM_STOP) + ret = w->event(w, + NULL, SND_SOC_DAPM_PRE_PMD); + break; + + case snd_soc_dapm_post: + if (!w->event) + list_for_each_entry_safe_continue(w, n, list, + power_list); + + if (event == SND_SOC_DAPM_STREAM_START) + ret = w->event(w, + NULL, SND_SOC_DAPM_POST_PMU); + else if (event == SND_SOC_DAPM_STREAM_STOP) + ret = w->event(w, + NULL, SND_SOC_DAPM_POST_PMD); + break; + + case snd_soc_dapm_input: + case snd_soc_dapm_output: + case snd_soc_dapm_hp: + case snd_soc_dapm_mic: + case snd_soc_dapm_line: + case snd_soc_dapm_spk: + /* No register support currently */ + ret = dapm_generic_apply_power(w); + break; + + default: + /* Queue it up for application */ + cur_sort = sort[w->id]; + cur_reg = w->reg; + list_move(&w->power_list, &pending); + break; + } + + if (ret < 0) + pr_err("Failed to apply widget power: %d\n", + ret); } + + if (!list_empty(&pending)) + dapm_seq_run_coalesced(codec, &pending); } /* @@ -751,23 +950,22 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event) { struct snd_soc_device *socdev = codec->socdev; struct snd_soc_dapm_widget *w; + LIST_HEAD(up_list); + LIST_HEAD(down_list); int ret = 0; - int i, power; + int power; int sys_power = 0; - INIT_LIST_HEAD(&codec->up_list); - INIT_LIST_HEAD(&codec->down_list); - /* Check which widgets we need to power and store them in * lists indicating if they should be powered up or down. */ list_for_each_entry(w, &codec->dapm_widgets, list) { switch (w->id) { case snd_soc_dapm_pre: - list_add_tail(&codec->down_list, &w->power_list); + dapm_seq_insert(w, &down_list, dapm_down_seq); break; case snd_soc_dapm_post: - list_add_tail(&codec->up_list, &w->power_list); + dapm_seq_insert(w, &up_list, dapm_up_seq); break; default: @@ -782,16 +980,31 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event) continue; if (power) - list_add_tail(&w->power_list, &codec->up_list); + dapm_seq_insert(w, &up_list, dapm_up_seq); else - list_add_tail(&w->power_list, - &codec->down_list); + dapm_seq_insert(w, &down_list, dapm_down_seq); w->power = power; break; } } + /* If there are no DAPM widgets then try to figure out power from the + * event type. + */ + if (list_empty(&codec->dapm_widgets)) { + switch (event) { + case SND_SOC_DAPM_STREAM_START: + case SND_SOC_DAPM_STREAM_RESUME: + sys_power = 1; + break; + case SND_SOC_DAPM_STREAM_NOP: + sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY; + default: + break; + } + } + /* If we're changing to all on or all off then prepare */ if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) || (!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) { @@ -802,32 +1015,10 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event) } /* Power down widgets first; try to avoid amplifying pops. */ - for (i = 0; i < ARRAY_SIZE(dapm_down_seq); i++) { - list_for_each_entry(w, &codec->down_list, power_list) { - /* is widget in stream order */ - if (w->id != dapm_down_seq[i]) - continue; - - ret = dapm_power_widget(codec, event, w); - if (ret != 0) - pr_err("Failed to power down %s: %d\n", - w->name, ret); - } - } + dapm_seq_run(codec, &down_list, event, dapm_down_seq); /* Now power up. */ - for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) { - list_for_each_entry(w, &codec->up_list, power_list) { - /* is widget in stream order */ - if (w->id != dapm_up_seq[i]) - continue; - - ret = dapm_power_widget(codec, event, w); - if (ret != 0) - pr_err("Failed to power up %s: %d\n", - w->name, ret); - } - } + dapm_seq_run(codec, &up_list, event, dapm_up_seq); /* If we just powered the last thing off drop to standby bias */ if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) { @@ -845,6 +1036,9 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event) pr_err("Failed to apply active bias: %d\n", ret); } + pop_dbg(codec->pop_time, "DAPM sequencing finished, waiting %dms\n", + codec->pop_time); + return 0; } @@ -881,6 +1075,8 @@ static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: case snd_soc_dapm_supply: + case snd_soc_dapm_aif_in: + case snd_soc_dapm_aif_out: if (w->name) { in = is_connected_input_ep(w); dapm_clear_walk(w->codec); @@ -906,6 +1102,92 @@ static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) } #endif +#ifdef CONFIG_DEBUG_FS +static int dapm_widget_power_open_file(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t dapm_widget_power_read_file(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct snd_soc_dapm_widget *w = file->private_data; + char *buf; + int in, out; + ssize_t ret; + struct snd_soc_dapm_path *p = NULL; + + buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + in = is_connected_input_ep(w); + dapm_clear_walk(w->codec); + out = is_connected_output_ep(w); + dapm_clear_walk(w->codec); + + ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d\n", + w->name, w->power ? "On" : "Off", in, out); + + if (w->active && w->sname) + ret += snprintf(buf, PAGE_SIZE - ret, " stream %s active\n", + w->sname); + + list_for_each_entry(p, &w->sources, list_sink) { + if (p->connect) + ret += snprintf(buf + ret, PAGE_SIZE - ret, + " in %s %s\n", + p->name ? p->name : "static", + p->source->name); + } + list_for_each_entry(p, &w->sinks, list_source) { + if (p->connect) + ret += snprintf(buf + ret, PAGE_SIZE - ret, + " out %s %s\n", + p->name ? p->name : "static", + p->sink->name); + } + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); + + kfree(buf); + return ret; +} + +static const struct file_operations dapm_widget_power_fops = { + .open = dapm_widget_power_open_file, + .read = dapm_widget_power_read_file, +}; + +void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) +{ + struct snd_soc_dapm_widget *w; + struct dentry *d; + + if (!codec->debugfs_dapm) + return; + + list_for_each_entry(w, &codec->dapm_widgets, list) { + if (!w->name) + continue; + + d = debugfs_create_file(w->name, 0444, + codec->debugfs_dapm, w, + &dapm_widget_power_fops); + if (!d) + printk(KERN_WARNING + "ASoC: Failed to create %s debugfs file\n", + w->name); + } +} +#else +void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec) +{ +} +#endif + /* test and update the power status of a mux widget */ static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, struct snd_kcontrol *kcontrol, int mask, @@ -1138,8 +1420,8 @@ static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, if (wsink->id == snd_soc_dapm_input) { if (wsource->id == snd_soc_dapm_micbias || wsource->id == snd_soc_dapm_mic || - wsink->id == snd_soc_dapm_line || - wsink->id == snd_soc_dapm_output) + wsource->id == snd_soc_dapm_line || + wsource->id == snd_soc_dapm_output) wsink->ext = 1; } if (wsource->id == snd_soc_dapm_output) { @@ -1171,6 +1453,8 @@ static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, case snd_soc_dapm_pre: case snd_soc_dapm_post: case snd_soc_dapm_supply: + case snd_soc_dapm_aif_in: + case snd_soc_dapm_aif_out: list_add(&path->list, &codec->dapm_paths); list_add(&path->list_sink, &wsink->sources); list_add(&path->list_source, &wsource->sinks); @@ -1273,9 +1557,11 @@ int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) dapm_new_mux(codec, w); break; case snd_soc_dapm_adc: + case snd_soc_dapm_aif_out: w->power_check = dapm_adc_check_power; break; case snd_soc_dapm_dac: + case snd_soc_dapm_aif_in: w->power_check = dapm_dac_check_power; break; case snd_soc_dapm_pga: @@ -1372,7 +1658,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, int max = mc->max; unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; - unsigned short val, val2, val_mask; + unsigned int val, val2, val_mask; int ret; val = (ucontrol->value.integer.value[0] & mask); @@ -1436,7 +1722,7 @@ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; - unsigned short val, bitmask; + unsigned int val, bitmask; for (bitmask = 1; bitmask < e->max; bitmask <<= 1) ; @@ -1464,8 +1750,8 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; - unsigned short val, mux; - unsigned short mask, bitmask; + unsigned int val, mux; + unsigned int mask, bitmask; int ret = 0; for (bitmask = 1; bitmask < e->max; bitmask <<= 1) @@ -1523,7 +1809,7 @@ int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; - unsigned short reg_val, val, mux; + unsigned int reg_val, val, mux; reg_val = snd_soc_read(widget->codec, e->reg); val = (reg_val >> e->shift_l) & e->mask; @@ -1563,8 +1849,8 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; - unsigned short val, mux; - unsigned short mask; + unsigned int val, mux; + unsigned int mask; int ret = 0; if (ucontrol->value.enumerated.item[0] > e->max - 1) @@ -1880,6 +2166,36 @@ void snd_soc_dapm_free(struct snd_soc_device *socdev) } EXPORT_SYMBOL_GPL(snd_soc_dapm_free); +/* + * snd_soc_dapm_shutdown - callback for system shutdown + */ +void snd_soc_dapm_shutdown(struct snd_soc_device *socdev) +{ + struct snd_soc_codec *codec = socdev->card->codec; + struct snd_soc_dapm_widget *w; + LIST_HEAD(down_list); + int powerdown = 0; + + list_for_each_entry(w, &codec->dapm_widgets, list) { + if (w->power) { + dapm_seq_insert(w, &down_list, dapm_down_seq); + w->power = 0; + powerdown = 1; + } + } + + /* If there were no widgets to power down we're already in + * standby. + */ + if (powerdown) { + snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE); + dapm_seq_run(codec, &down_list, 0, dapm_down_seq); + snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY); + } + + snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF); +} + /* Module information */ MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |