diff options
Diffstat (limited to 'sound/soc/soc-dapm.c')
| -rw-r--r-- | sound/soc/soc-dapm.c | 152 |
1 files changed, 84 insertions, 68 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index f9d100bc847..7351db9606e 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -2,8 +2,7 @@ * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management * * Copyright 2005 Wolfson Microelectronics PLC. - * Author: Liam Girdwood - * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com + * Author: Liam Girdwood <lrg@slimlogic.co.uk> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -38,6 +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> @@ -67,7 +67,9 @@ static int dapm_status = 1; module_param(dapm_status, int, 0); MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); -static unsigned int pop_time; +static struct dentry *asoc_debugfs; + +static u32 pop_time; static void pop_wait(void) { @@ -104,10 +106,13 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w, case snd_soc_dapm_switch: case snd_soc_dapm_mixer: { int val; - int reg = w->kcontrols[i].private_value & 0xff; - int shift = (w->kcontrols[i].private_value >> 8) & 0x0f; - int mask = (w->kcontrols[i].private_value >> 16) & 0xff; - int invert = (w->kcontrols[i].private_value >> 24) & 0x01; + struct soc_mixer_control *mc = (struct soc_mixer_control *) + w->kcontrols[i].private_value; + unsigned int reg = mc->reg; + unsigned int shift = mc->shift; + int max = mc->max; + unsigned int mask = (1 << fls(max)) - 1; + unsigned int invert = mc->invert; val = snd_soc_read(w->codec, reg); val = (val >> shift) & mask; @@ -122,13 +127,13 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w, struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; int val, item, bitmask; - for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) + for (bitmask = 1; bitmask < e->max; bitmask <<= 1) ; val = snd_soc_read(w->codec, e->reg); item = (val >> e->shift_l) & (bitmask - 1); p->connect = 0; - for (i = 0; i < e->mask; i++) { + for (i = 0; i < e->max; i++) { if (!(strcmp(p->name, e->texts[i])) && item == i) p->connect = 1; } @@ -165,7 +170,7 @@ static int dapm_connect_mux(struct snd_soc_codec *codec, struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; int i; - for (i = 0; i < e->mask; i++) { + for (i = 0; i < e->max; i++) { if (!(strcmp(control_name, e->texts[i]))) { list_add(&path->list, &codec->dapm_paths); list_add(&path->list_sink, &dest->sources); @@ -247,16 +252,19 @@ static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) return 0; if (widget->num_kcontrols && k) { - int reg = k->private_value & 0xff; - int shift = (k->private_value >> 8) & 0x0f; - int mask = (k->private_value >> 16) & 0xff; - int invert = (k->private_value >> 24) & 0x01; + struct soc_mixer_control *mc = + (struct soc_mixer_control *)k->private_value; + unsigned int reg = mc->reg; + unsigned int shift = mc->shift; + int max = mc->max; + unsigned int mask = (1 << fls(max)) - 1; + unsigned int invert = mc->invert; if (power) { int i; /* power up has happended, increase volume to last level */ if (invert) { - for (i = mask; i > widget->saved_value; i--) + for (i = max; i > widget->saved_value; i--) snd_soc_update_bits(widget->codec, reg, mask, i); } else { for (i = 0; i < widget->saved_value; i++) @@ -684,7 +692,7 @@ static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) /* 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, - int val, struct soc_enum* e) + int mux, int val, struct soc_enum *e) { struct snd_soc_dapm_path *path; int found = 0; @@ -700,12 +708,12 @@ static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, if (path->kcontrol != kcontrol) continue; - if (!path->name || ! e->texts[val]) + if (!path->name || !e->texts[mux]) continue; found = 1; /* we now need to match the string in the enum to the path */ - if (!(strcmp(path->name, e->texts[val]))) + if (!(strcmp(path->name, e->texts[mux]))) path->connect = 1; /* new connection */ else path->connect = 0; /* old connection must be powered down */ @@ -811,51 +819,35 @@ static ssize_t dapm_widget_show(struct device *dev, static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); -/* pop/click delay times */ -static ssize_t dapm_pop_time_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n", pop_time); -} - -static ssize_t dapm_pop_time_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) - -{ - unsigned long val; - - if (strict_strtoul(buf, 10, &val) >= 0) - pop_time = val; - else - printk(KERN_ERR "Unable to parse pop_time setting\n"); - - return count; -} - -static DEVICE_ATTR(dapm_pop_time, 0744, dapm_pop_time_show, - dapm_pop_time_store); - int snd_soc_dapm_sys_add(struct device *dev) { int ret = 0; - if (dapm_status) { - ret = device_create_file(dev, &dev_attr_dapm_widget); + if (!dapm_status) + return 0; - if (ret == 0) - ret = device_create_file(dev, &dev_attr_dapm_pop_time); - } + ret = device_create_file(dev, &dev_attr_dapm_widget); + if (ret != 0) + return ret; - return ret; + asoc_debugfs = debugfs_create_dir("asoc", NULL); + if (!IS_ERR(asoc_debugfs) && asoc_debugfs) + debugfs_create_u32("dapm_pop_time", 0744, asoc_debugfs, + &pop_time); + else + asoc_debugfs = NULL; + + return 0; } static void snd_soc_dapm_sys_remove(struct device *dev) { if (dapm_status) { - device_remove_file(dev, &dev_attr_dapm_pop_time); device_remove_file(dev, &dev_attr_dapm_widget); } + + if (asoc_debugfs) + debugfs_remove_recursive(asoc_debugfs); } /* free all dapm widgets and resources */ @@ -1133,12 +1125,14 @@ int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); - int reg = kcontrol->private_value & 0xff; - int shift = (kcontrol->private_value >> 8) & 0x0f; - int rshift = (kcontrol->private_value >> 12) & 0x0f; - int max = (kcontrol->private_value >> 16) & 0xff; - int invert = (kcontrol->private_value >> 24) & 0x01; - int mask = (1 << fls(max)) - 1; + struct soc_mixer_control *mc = + (struct soc_mixer_control *)kcontrol->private_value; + unsigned int reg = mc->reg; + unsigned int shift = mc->shift; + unsigned int rshift = mc->rshift; + int max = mc->max; + unsigned int invert = mc->invert; + unsigned int mask = (1 << fls(max)) - 1; /* return the saved value if we are powered down */ if (widget->id == snd_soc_dapm_pga && !widget->power) { @@ -1176,12 +1170,14 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); - int reg = kcontrol->private_value & 0xff; - int shift = (kcontrol->private_value >> 8) & 0x0f; - int rshift = (kcontrol->private_value >> 12) & 0x0f; - int max = (kcontrol->private_value >> 16) & 0xff; - int mask = (1 << fls(max)) - 1; - int invert = (kcontrol->private_value >> 24) & 0x01; + struct soc_mixer_control *mc = + (struct soc_mixer_control *)kcontrol->private_value; + unsigned int reg = mc->reg; + unsigned int shift = mc->shift; + unsigned int rshift = mc->rshift; + int max = mc->max; + unsigned int mask = (1 << fls(max)) - 1; + unsigned int invert = mc->invert; unsigned short val, val2, val_mask; int ret; @@ -1248,7 +1244,7 @@ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned short val, bitmask; - for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) + for (bitmask = 1; bitmask < e->max; bitmask <<= 1) ; val = snd_soc_read(widget->codec, e->reg); ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); @@ -1278,15 +1274,15 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, unsigned short mask, bitmask; int ret = 0; - for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) + for (bitmask = 1; bitmask < e->max; bitmask <<= 1) ; - if (ucontrol->value.enumerated.item[0] > e->mask - 1) + if (ucontrol->value.enumerated.item[0] > e->max - 1) return -EINVAL; mux = ucontrol->value.enumerated.item[0]; val = mux << e->shift_l; mask = (bitmask - 1) << e->shift_l; if (e->shift_l != e->shift_r) { - if (ucontrol->value.enumerated.item[1] > e->mask - 1) + if (ucontrol->value.enumerated.item[1] > e->max - 1) return -EINVAL; val |= ucontrol->value.enumerated.item[1] << e->shift_r; mask |= (bitmask - 1) << e->shift_r; @@ -1294,7 +1290,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, mutex_lock(&widget->codec->mutex); widget->value = val; - dapm_mux_update_power(widget, kcontrol, mask, mux, e); + dapm_mux_update_power(widget, kcontrol, mask, mux, val, e); if (widget->event) { if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { ret = widget->event(widget, @@ -1487,6 +1483,26 @@ int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin) EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); /** + * snd_soc_dapm_nc_pin - permanently disable pin. + * @codec: SoC codec + * @pin: pin name + * + * Marks the specified pin as being not connected, disabling it along + * any parent or child widgets. At present this is identical to + * snd_soc_dapm_disable_pin() but in future it will be extended to do + * additional things such as disabling controls which only affect + * paths through the pin. + * + * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to + * do any widget power switching. + */ +int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, char *pin) +{ + return snd_soc_dapm_set_pin(codec, pin, 0); +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); + +/** * snd_soc_dapm_get_pin_status - get audio pin status * @codec: audio codec * @pin: audio signal pin endpoint (or start point) @@ -1524,6 +1540,6 @@ void snd_soc_dapm_free(struct snd_soc_device *socdev) EXPORT_SYMBOL_GPL(snd_soc_dapm_free); /* Module information */ -MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); +MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); MODULE_LICENSE("GPL"); |