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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
The uevent() callback in struct bus_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230111113018.459199-16-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1101 lines
28 KiB
C
1101 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* HD-audio codec core device
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*/
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/export.h>
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#include <linux/pm_runtime.h>
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#include <sound/hdaudio.h>
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#include <sound/hda_regmap.h>
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#include <sound/pcm.h>
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#include "local.h"
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static void setup_fg_nodes(struct hdac_device *codec);
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static int get_codec_vendor_name(struct hdac_device *codec);
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static void default_release(struct device *dev)
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{
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snd_hdac_device_exit(dev_to_hdac_dev(dev));
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}
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/**
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* snd_hdac_device_init - initialize the HD-audio codec base device
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* @codec: device to initialize
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* @bus: but to attach
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* @name: device name string
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* @addr: codec address
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*
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* Returns zero for success or a negative error code.
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*
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* This function increments the runtime PM counter and marks it active.
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* The caller needs to turn it off appropriately later.
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*
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* The caller needs to set the device's release op properly by itself.
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*/
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int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
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const char *name, unsigned int addr)
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{
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struct device *dev;
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hda_nid_t fg;
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int err;
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dev = &codec->dev;
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device_initialize(dev);
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dev->parent = bus->dev;
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dev->bus = &snd_hda_bus_type;
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dev->release = default_release;
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dev->groups = hdac_dev_attr_groups;
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dev_set_name(dev, "%s", name);
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device_enable_async_suspend(dev);
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codec->bus = bus;
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codec->addr = addr;
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codec->type = HDA_DEV_CORE;
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mutex_init(&codec->widget_lock);
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mutex_init(&codec->regmap_lock);
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pm_runtime_set_active(&codec->dev);
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pm_runtime_get_noresume(&codec->dev);
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atomic_set(&codec->in_pm, 0);
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err = snd_hdac_bus_add_device(bus, codec);
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if (err < 0)
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goto error;
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/* fill parameters */
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codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
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AC_PAR_VENDOR_ID);
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if (codec->vendor_id == -1) {
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/* read again, hopefully the access method was corrected
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* in the last read...
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*/
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codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
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AC_PAR_VENDOR_ID);
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}
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codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
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AC_PAR_SUBSYSTEM_ID);
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codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
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AC_PAR_REV_ID);
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setup_fg_nodes(codec);
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if (!codec->afg && !codec->mfg) {
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dev_err(dev, "no AFG or MFG node found\n");
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err = -ENODEV;
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goto error;
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}
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fg = codec->afg ? codec->afg : codec->mfg;
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err = snd_hdac_refresh_widgets(codec);
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if (err < 0)
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goto error;
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codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
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/* reread ssid if not set by parameter */
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if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
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snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
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&codec->subsystem_id);
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err = get_codec_vendor_name(codec);
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if (err < 0)
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goto error;
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codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
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codec->vendor_id & 0xffff);
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if (!codec->chip_name) {
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err = -ENOMEM;
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goto error;
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}
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return 0;
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error:
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put_device(&codec->dev);
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return err;
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}
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EXPORT_SYMBOL_GPL(snd_hdac_device_init);
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/**
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* snd_hdac_device_exit - clean up the HD-audio codec base device
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* @codec: device to clean up
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*/
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void snd_hdac_device_exit(struct hdac_device *codec)
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{
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pm_runtime_put_noidle(&codec->dev);
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/* keep balance of runtime PM child_count in parent device */
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pm_runtime_set_suspended(&codec->dev);
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snd_hdac_bus_remove_device(codec->bus, codec);
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kfree(codec->vendor_name);
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kfree(codec->chip_name);
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}
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EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
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/**
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* snd_hdac_device_register - register the hd-audio codec base device
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* @codec: the device to register
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*/
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int snd_hdac_device_register(struct hdac_device *codec)
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{
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int err;
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err = device_add(&codec->dev);
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if (err < 0)
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return err;
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mutex_lock(&codec->widget_lock);
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err = hda_widget_sysfs_init(codec);
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mutex_unlock(&codec->widget_lock);
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if (err < 0) {
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device_del(&codec->dev);
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return err;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(snd_hdac_device_register);
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/**
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* snd_hdac_device_unregister - unregister the hd-audio codec base device
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* @codec: the device to unregister
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*/
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void snd_hdac_device_unregister(struct hdac_device *codec)
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{
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if (device_is_registered(&codec->dev)) {
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mutex_lock(&codec->widget_lock);
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hda_widget_sysfs_exit(codec);
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mutex_unlock(&codec->widget_lock);
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device_del(&codec->dev);
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snd_hdac_bus_remove_device(codec->bus, codec);
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}
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}
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EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
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/**
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* snd_hdac_device_set_chip_name - set/update the codec name
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* @codec: the HDAC device
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* @name: name string to set
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*
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* Returns 0 if the name is set or updated, or a negative error code.
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*/
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int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
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{
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char *newname;
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if (!name)
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return 0;
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newname = kstrdup(name, GFP_KERNEL);
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if (!newname)
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return -ENOMEM;
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kfree(codec->chip_name);
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codec->chip_name = newname;
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return 0;
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}
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EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
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/**
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* snd_hdac_codec_modalias - give the module alias name
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* @codec: HDAC device
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* @buf: string buffer to store
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* @size: string buffer size
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*
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* Returns the size of string, like snprintf(), or a negative error code.
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*/
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int snd_hdac_codec_modalias(const struct hdac_device *codec, char *buf, size_t size)
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{
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return scnprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
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codec->vendor_id, codec->revision_id, codec->type);
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}
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EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
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/**
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* snd_hdac_make_cmd - compose a 32bit command word to be sent to the
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* HD-audio controller
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* @codec: the codec object
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* @nid: NID to encode
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* @verb: verb to encode
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* @parm: parameter to encode
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*
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* Return an encoded command verb or -1 for error.
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*/
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static unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
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unsigned int verb, unsigned int parm)
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{
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u32 val, addr;
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addr = codec->addr;
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if ((addr & ~0xf) || (nid & ~0x7f) ||
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(verb & ~0xfff) || (parm & ~0xffff)) {
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dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
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addr, nid, verb, parm);
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return -1;
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}
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val = addr << 28;
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val |= (u32)nid << 20;
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val |= verb << 8;
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val |= parm;
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return val;
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}
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/**
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* snd_hdac_exec_verb - execute an encoded verb
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* @codec: the codec object
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* @cmd: encoded verb to execute
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* @flags: optional flags, pass zero for default
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* @res: the pointer to store the result, NULL if running async
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*
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* Returns zero if successful, or a negative error code.
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*
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* This calls the exec_verb op when set in hdac_codec. If not,
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* call the default snd_hdac_bus_exec_verb().
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*/
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int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
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unsigned int flags, unsigned int *res)
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{
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if (codec->exec_verb)
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return codec->exec_verb(codec, cmd, flags, res);
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return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
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}
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/**
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* snd_hdac_read - execute a verb
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* @codec: the codec object
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* @nid: NID to execute a verb
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* @verb: verb to execute
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* @parm: parameter for a verb
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* @res: the pointer to store the result, NULL if running async
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*
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* Returns zero if successful, or a negative error code.
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*/
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int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
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unsigned int verb, unsigned int parm, unsigned int *res)
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{
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unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
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return snd_hdac_exec_verb(codec, cmd, 0, res);
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}
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EXPORT_SYMBOL_GPL(snd_hdac_read);
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/**
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* _snd_hdac_read_parm - read a parmeter
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* @codec: the codec object
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* @nid: NID to read a parameter
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* @parm: parameter to read
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* @res: pointer to store the read value
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*
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* This function returns zero or an error unlike snd_hdac_read_parm().
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*/
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int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
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unsigned int *res)
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{
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unsigned int cmd;
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cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
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return snd_hdac_regmap_read_raw(codec, cmd, res);
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}
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EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
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/**
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* snd_hdac_read_parm_uncached - read a codec parameter without caching
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* @codec: the codec object
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* @nid: NID to read a parameter
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* @parm: parameter to read
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*
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* Returns -1 for error. If you need to distinguish the error more
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* strictly, use snd_hdac_read() directly.
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*/
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int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
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int parm)
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{
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unsigned int cmd, val;
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cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
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if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
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return -1;
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return val;
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}
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EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
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/**
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* snd_hdac_override_parm - override read-only parameters
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* @codec: the codec object
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* @nid: NID for the parameter
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* @parm: the parameter to change
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* @val: the parameter value to overwrite
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*/
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int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
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unsigned int parm, unsigned int val)
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{
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unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
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int err;
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if (!codec->regmap)
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return -EINVAL;
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codec->caps_overwriting = true;
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err = snd_hdac_regmap_write_raw(codec, verb, val);
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codec->caps_overwriting = false;
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return err;
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}
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EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
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/**
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* snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
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* @codec: the codec object
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* @nid: NID to inspect
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* @start_id: the pointer to store the starting NID
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*
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* Returns the number of subtree nodes or zero if not found.
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* This function reads parameters always without caching.
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*/
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int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
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hda_nid_t *start_id)
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{
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unsigned int parm;
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parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
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if (parm == -1) {
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*start_id = 0;
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return 0;
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}
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*start_id = (parm >> 16) & 0x7fff;
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return (int)(parm & 0x7fff);
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}
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EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
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/*
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* look for an AFG and MFG nodes
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*/
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static void setup_fg_nodes(struct hdac_device *codec)
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{
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int i, total_nodes, function_id;
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hda_nid_t nid;
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total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
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for (i = 0; i < total_nodes; i++, nid++) {
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function_id = snd_hdac_read_parm(codec, nid,
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AC_PAR_FUNCTION_TYPE);
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switch (function_id & 0xff) {
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case AC_GRP_AUDIO_FUNCTION:
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codec->afg = nid;
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codec->afg_function_id = function_id & 0xff;
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codec->afg_unsol = (function_id >> 8) & 1;
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break;
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case AC_GRP_MODEM_FUNCTION:
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codec->mfg = nid;
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codec->mfg_function_id = function_id & 0xff;
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codec->mfg_unsol = (function_id >> 8) & 1;
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break;
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default:
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break;
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}
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}
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}
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/**
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* snd_hdac_refresh_widgets - Reset the widget start/end nodes
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* @codec: the codec object
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*/
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int snd_hdac_refresh_widgets(struct hdac_device *codec)
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{
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hda_nid_t start_nid;
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int nums, err = 0;
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/*
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* Serialize against multiple threads trying to update the sysfs
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* widgets array.
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*/
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mutex_lock(&codec->widget_lock);
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nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
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if (!start_nid || nums <= 0 || nums >= 0xff) {
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dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
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codec->afg);
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err = -EINVAL;
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goto unlock;
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}
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err = hda_widget_sysfs_reinit(codec, start_nid, nums);
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if (err < 0)
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goto unlock;
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codec->num_nodes = nums;
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codec->start_nid = start_nid;
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codec->end_nid = start_nid + nums;
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unlock:
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mutex_unlock(&codec->widget_lock);
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return err;
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}
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EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
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/* return CONNLIST_LEN parameter of the given widget */
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static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
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{
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unsigned int wcaps = get_wcaps(codec, nid);
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unsigned int parm;
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if (!(wcaps & AC_WCAP_CONN_LIST) &&
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get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
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return 0;
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parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
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if (parm == -1)
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parm = 0;
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return parm;
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}
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/**
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* snd_hdac_get_connections - get a widget connection list
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* @codec: the codec object
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* @nid: NID
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* @conn_list: the array to store the results, can be NULL
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* @max_conns: the max size of the given array
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*
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* Returns the number of connected widgets, zero for no connection, or a
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* negative error code. When the number of elements don't fit with the
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* given array size, it returns -ENOSPC.
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*
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* When @conn_list is NULL, it just checks the number of connections.
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*/
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int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
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hda_nid_t *conn_list, int max_conns)
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{
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unsigned int parm;
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int i, conn_len, conns, err;
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unsigned int shift, num_elems, mask;
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hda_nid_t prev_nid;
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int null_count = 0;
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parm = get_num_conns(codec, nid);
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if (!parm)
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return 0;
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if (parm & AC_CLIST_LONG) {
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/* long form */
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shift = 16;
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num_elems = 2;
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} else {
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/* short form */
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shift = 8;
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num_elems = 4;
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}
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conn_len = parm & AC_CLIST_LENGTH;
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mask = (1 << (shift-1)) - 1;
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if (!conn_len)
|
|
return 0; /* no connection */
|
|
|
|
if (conn_len == 1) {
|
|
/* single connection */
|
|
err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
|
|
&parm);
|
|
if (err < 0)
|
|
return err;
|
|
if (conn_list)
|
|
conn_list[0] = parm & mask;
|
|
return 1;
|
|
}
|
|
|
|
/* multi connection */
|
|
conns = 0;
|
|
prev_nid = 0;
|
|
for (i = 0; i < conn_len; i++) {
|
|
int range_val;
|
|
hda_nid_t val, n;
|
|
|
|
if (i % num_elems == 0) {
|
|
err = snd_hdac_read(codec, nid,
|
|
AC_VERB_GET_CONNECT_LIST, i,
|
|
&parm);
|
|
if (err < 0)
|
|
return -EIO;
|
|
}
|
|
range_val = !!(parm & (1 << (shift-1))); /* ranges */
|
|
val = parm & mask;
|
|
if (val == 0 && null_count++) { /* no second chance */
|
|
dev_dbg(&codec->dev,
|
|
"invalid CONNECT_LIST verb %x[%i]:%x\n",
|
|
nid, i, parm);
|
|
return 0;
|
|
}
|
|
parm >>= shift;
|
|
if (range_val) {
|
|
/* ranges between the previous and this one */
|
|
if (!prev_nid || prev_nid >= val) {
|
|
dev_warn(&codec->dev,
|
|
"invalid dep_range_val %x:%x\n",
|
|
prev_nid, val);
|
|
continue;
|
|
}
|
|
for (n = prev_nid + 1; n <= val; n++) {
|
|
if (conn_list) {
|
|
if (conns >= max_conns)
|
|
return -ENOSPC;
|
|
conn_list[conns] = n;
|
|
}
|
|
conns++;
|
|
}
|
|
} else {
|
|
if (conn_list) {
|
|
if (conns >= max_conns)
|
|
return -ENOSPC;
|
|
conn_list[conns] = val;
|
|
}
|
|
conns++;
|
|
}
|
|
prev_nid = val;
|
|
}
|
|
return conns;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
|
|
|
|
#ifdef CONFIG_PM
|
|
/**
|
|
* snd_hdac_power_up - power up the codec
|
|
* @codec: the codec object
|
|
*
|
|
* This function calls the runtime PM helper to power up the given codec.
|
|
* Unlike snd_hdac_power_up_pm(), you should call this only for the code
|
|
* path that isn't included in PM path. Otherwise it gets stuck.
|
|
*
|
|
* Returns zero if successful, or a negative error code.
|
|
*/
|
|
int snd_hdac_power_up(struct hdac_device *codec)
|
|
{
|
|
return pm_runtime_get_sync(&codec->dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_power_up);
|
|
|
|
/**
|
|
* snd_hdac_power_down - power down the codec
|
|
* @codec: the codec object
|
|
*
|
|
* Returns zero if successful, or a negative error code.
|
|
*/
|
|
int snd_hdac_power_down(struct hdac_device *codec)
|
|
{
|
|
struct device *dev = &codec->dev;
|
|
|
|
pm_runtime_mark_last_busy(dev);
|
|
return pm_runtime_put_autosuspend(dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_power_down);
|
|
|
|
/**
|
|
* snd_hdac_power_up_pm - power up the codec
|
|
* @codec: the codec object
|
|
*
|
|
* This function can be called in a recursive code path like init code
|
|
* which may be called by PM suspend/resume again. OTOH, if a power-up
|
|
* call must wake up the sleeper (e.g. in a kctl callback), use
|
|
* snd_hdac_power_up() instead.
|
|
*
|
|
* Returns zero if successful, or a negative error code.
|
|
*/
|
|
int snd_hdac_power_up_pm(struct hdac_device *codec)
|
|
{
|
|
if (!atomic_inc_not_zero(&codec->in_pm))
|
|
return snd_hdac_power_up(codec);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
|
|
|
|
/* like snd_hdac_power_up_pm(), but only increment the pm count when
|
|
* already powered up. Returns -1 if not powered up, 1 if incremented
|
|
* or 0 if unchanged. Only used in hdac_regmap.c
|
|
*/
|
|
int snd_hdac_keep_power_up(struct hdac_device *codec)
|
|
{
|
|
if (!atomic_inc_not_zero(&codec->in_pm)) {
|
|
int ret = pm_runtime_get_if_in_use(&codec->dev);
|
|
if (!ret)
|
|
return -1;
|
|
if (ret < 0)
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* snd_hdac_power_down_pm - power down the codec
|
|
* @codec: the codec object
|
|
*
|
|
* Like snd_hdac_power_up_pm(), this function is used in a recursive
|
|
* code path like init code which may be called by PM suspend/resume again.
|
|
*
|
|
* Returns zero if successful, or a negative error code.
|
|
*/
|
|
int snd_hdac_power_down_pm(struct hdac_device *codec)
|
|
{
|
|
if (atomic_dec_if_positive(&codec->in_pm) < 0)
|
|
return snd_hdac_power_down(codec);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
|
|
#endif
|
|
|
|
/* codec vendor labels */
|
|
struct hda_vendor_id {
|
|
unsigned int id;
|
|
const char *name;
|
|
};
|
|
|
|
static const struct hda_vendor_id hda_vendor_ids[] = {
|
|
{ 0x1002, "ATI" },
|
|
{ 0x1013, "Cirrus Logic" },
|
|
{ 0x1057, "Motorola" },
|
|
{ 0x1095, "Silicon Image" },
|
|
{ 0x10de, "Nvidia" },
|
|
{ 0x10ec, "Realtek" },
|
|
{ 0x1102, "Creative" },
|
|
{ 0x1106, "VIA" },
|
|
{ 0x111d, "IDT" },
|
|
{ 0x11c1, "LSI" },
|
|
{ 0x11d4, "Analog Devices" },
|
|
{ 0x13f6, "C-Media" },
|
|
{ 0x14f1, "Conexant" },
|
|
{ 0x17e8, "Chrontel" },
|
|
{ 0x1854, "LG" },
|
|
{ 0x19e5, "Huawei" },
|
|
{ 0x1aec, "Wolfson Microelectronics" },
|
|
{ 0x1af4, "QEMU" },
|
|
{ 0x434d, "C-Media" },
|
|
{ 0x8086, "Intel" },
|
|
{ 0x8384, "SigmaTel" },
|
|
{} /* terminator */
|
|
};
|
|
|
|
/* store the codec vendor name */
|
|
static int get_codec_vendor_name(struct hdac_device *codec)
|
|
{
|
|
const struct hda_vendor_id *c;
|
|
u16 vendor_id = codec->vendor_id >> 16;
|
|
|
|
for (c = hda_vendor_ids; c->id; c++) {
|
|
if (c->id == vendor_id) {
|
|
codec->vendor_name = kstrdup(c->name, GFP_KERNEL);
|
|
return codec->vendor_name ? 0 : -ENOMEM;
|
|
}
|
|
}
|
|
|
|
codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
|
|
return codec->vendor_name ? 0 : -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* stream formats
|
|
*/
|
|
struct hda_rate_tbl {
|
|
unsigned int hz;
|
|
unsigned int alsa_bits;
|
|
unsigned int hda_fmt;
|
|
};
|
|
|
|
/* rate = base * mult / div */
|
|
#define HDA_RATE(base, mult, div) \
|
|
(AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \
|
|
(((div) - 1) << AC_FMT_DIV_SHIFT))
|
|
|
|
static const struct hda_rate_tbl rate_bits[] = {
|
|
/* rate in Hz, ALSA rate bitmask, HDA format value */
|
|
|
|
/* autodetected value used in snd_hda_query_supported_pcm */
|
|
{ 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) },
|
|
{ 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) },
|
|
{ 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) },
|
|
{ 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) },
|
|
{ 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) },
|
|
{ 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) },
|
|
{ 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) },
|
|
{ 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) },
|
|
{ 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) },
|
|
{ 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) },
|
|
{ 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) },
|
|
#define AC_PAR_PCM_RATE_BITS 11
|
|
/* up to bits 10, 384kHZ isn't supported properly */
|
|
|
|
/* not autodetected value */
|
|
{ 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
|
|
|
|
{ 0 } /* terminator */
|
|
};
|
|
|
|
/**
|
|
* snd_hdac_calc_stream_format - calculate the format bitset
|
|
* @rate: the sample rate
|
|
* @channels: the number of channels
|
|
* @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
|
|
* @maxbps: the max. bps
|
|
* @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
|
|
*
|
|
* Calculate the format bitset from the given rate, channels and th PCM format.
|
|
*
|
|
* Return zero if invalid.
|
|
*/
|
|
unsigned int snd_hdac_calc_stream_format(unsigned int rate,
|
|
unsigned int channels,
|
|
snd_pcm_format_t format,
|
|
unsigned int maxbps,
|
|
unsigned short spdif_ctls)
|
|
{
|
|
int i;
|
|
unsigned int val = 0;
|
|
|
|
for (i = 0; rate_bits[i].hz; i++)
|
|
if (rate_bits[i].hz == rate) {
|
|
val = rate_bits[i].hda_fmt;
|
|
break;
|
|
}
|
|
if (!rate_bits[i].hz)
|
|
return 0;
|
|
|
|
if (channels == 0 || channels > 8)
|
|
return 0;
|
|
val |= channels - 1;
|
|
|
|
switch (snd_pcm_format_width(format)) {
|
|
case 8:
|
|
val |= AC_FMT_BITS_8;
|
|
break;
|
|
case 16:
|
|
val |= AC_FMT_BITS_16;
|
|
break;
|
|
case 20:
|
|
case 24:
|
|
case 32:
|
|
if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
|
|
val |= AC_FMT_BITS_32;
|
|
else if (maxbps >= 24)
|
|
val |= AC_FMT_BITS_24;
|
|
else
|
|
val |= AC_FMT_BITS_20;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (spdif_ctls & AC_DIG1_NONAUDIO)
|
|
val |= AC_FMT_TYPE_NON_PCM;
|
|
|
|
return val;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
|
|
|
|
static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
|
|
{
|
|
unsigned int val = 0;
|
|
|
|
if (nid != codec->afg &&
|
|
(get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
|
|
val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
|
|
if (!val || val == -1)
|
|
val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
|
|
if (!val || val == -1)
|
|
return 0;
|
|
return val;
|
|
}
|
|
|
|
static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
|
|
{
|
|
unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
|
|
|
|
if (!streams || streams == -1)
|
|
streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
|
|
if (!streams || streams == -1)
|
|
return 0;
|
|
return streams;
|
|
}
|
|
|
|
/**
|
|
* snd_hdac_query_supported_pcm - query the supported PCM rates and formats
|
|
* @codec: the codec object
|
|
* @nid: NID to query
|
|
* @ratesp: the pointer to store the detected rate bitflags
|
|
* @formatsp: the pointer to store the detected formats
|
|
* @bpsp: the pointer to store the detected format widths
|
|
*
|
|
* Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp
|
|
* or @bsps argument is ignored.
|
|
*
|
|
* Returns 0 if successful, otherwise a negative error code.
|
|
*/
|
|
int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
|
|
u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
|
|
{
|
|
unsigned int i, val, wcaps;
|
|
|
|
wcaps = get_wcaps(codec, nid);
|
|
val = query_pcm_param(codec, nid);
|
|
|
|
if (ratesp) {
|
|
u32 rates = 0;
|
|
for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
|
|
if (val & (1 << i))
|
|
rates |= rate_bits[i].alsa_bits;
|
|
}
|
|
if (rates == 0) {
|
|
dev_err(&codec->dev,
|
|
"rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
|
|
nid, val,
|
|
(wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
|
|
return -EIO;
|
|
}
|
|
*ratesp = rates;
|
|
}
|
|
|
|
if (formatsp || bpsp) {
|
|
u64 formats = 0;
|
|
unsigned int streams, bps;
|
|
|
|
streams = query_stream_param(codec, nid);
|
|
if (!streams)
|
|
return -EIO;
|
|
|
|
bps = 0;
|
|
if (streams & AC_SUPFMT_PCM) {
|
|
if (val & AC_SUPPCM_BITS_8) {
|
|
formats |= SNDRV_PCM_FMTBIT_U8;
|
|
bps = 8;
|
|
}
|
|
if (val & AC_SUPPCM_BITS_16) {
|
|
formats |= SNDRV_PCM_FMTBIT_S16_LE;
|
|
bps = 16;
|
|
}
|
|
if (wcaps & AC_WCAP_DIGITAL) {
|
|
if (val & AC_SUPPCM_BITS_32)
|
|
formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
|
|
if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
|
|
formats |= SNDRV_PCM_FMTBIT_S32_LE;
|
|
if (val & AC_SUPPCM_BITS_24)
|
|
bps = 24;
|
|
else if (val & AC_SUPPCM_BITS_20)
|
|
bps = 20;
|
|
} else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
|
|
AC_SUPPCM_BITS_32)) {
|
|
formats |= SNDRV_PCM_FMTBIT_S32_LE;
|
|
if (val & AC_SUPPCM_BITS_32)
|
|
bps = 32;
|
|
else if (val & AC_SUPPCM_BITS_24)
|
|
bps = 24;
|
|
else if (val & AC_SUPPCM_BITS_20)
|
|
bps = 20;
|
|
}
|
|
}
|
|
#if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
|
|
if (streams & AC_SUPFMT_FLOAT32) {
|
|
formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
|
|
if (!bps)
|
|
bps = 32;
|
|
}
|
|
#endif
|
|
if (streams == AC_SUPFMT_AC3) {
|
|
/* should be exclusive */
|
|
/* temporary hack: we have still no proper support
|
|
* for the direct AC3 stream...
|
|
*/
|
|
formats |= SNDRV_PCM_FMTBIT_U8;
|
|
bps = 8;
|
|
}
|
|
if (formats == 0) {
|
|
dev_err(&codec->dev,
|
|
"formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
|
|
nid, val,
|
|
(wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
|
|
streams);
|
|
return -EIO;
|
|
}
|
|
if (formatsp)
|
|
*formatsp = formats;
|
|
if (bpsp)
|
|
*bpsp = bps;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
|
|
|
|
/**
|
|
* snd_hdac_is_supported_format - Check the validity of the format
|
|
* @codec: the codec object
|
|
* @nid: NID to check
|
|
* @format: the HD-audio format value to check
|
|
*
|
|
* Check whether the given node supports the format value.
|
|
*
|
|
* Returns true if supported, false if not.
|
|
*/
|
|
bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
|
|
unsigned int format)
|
|
{
|
|
int i;
|
|
unsigned int val = 0, rate, stream;
|
|
|
|
val = query_pcm_param(codec, nid);
|
|
if (!val)
|
|
return false;
|
|
|
|
rate = format & 0xff00;
|
|
for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
|
|
if (rate_bits[i].hda_fmt == rate) {
|
|
if (val & (1 << i))
|
|
break;
|
|
return false;
|
|
}
|
|
if (i >= AC_PAR_PCM_RATE_BITS)
|
|
return false;
|
|
|
|
stream = query_stream_param(codec, nid);
|
|
if (!stream)
|
|
return false;
|
|
|
|
if (stream & AC_SUPFMT_PCM) {
|
|
switch (format & 0xf0) {
|
|
case 0x00:
|
|
if (!(val & AC_SUPPCM_BITS_8))
|
|
return false;
|
|
break;
|
|
case 0x10:
|
|
if (!(val & AC_SUPPCM_BITS_16))
|
|
return false;
|
|
break;
|
|
case 0x20:
|
|
if (!(val & AC_SUPPCM_BITS_20))
|
|
return false;
|
|
break;
|
|
case 0x30:
|
|
if (!(val & AC_SUPPCM_BITS_24))
|
|
return false;
|
|
break;
|
|
case 0x40:
|
|
if (!(val & AC_SUPPCM_BITS_32))
|
|
return false;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
} else {
|
|
/* FIXME: check for float32 and AC3? */
|
|
}
|
|
|
|
return true;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
|
|
|
|
static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
|
|
int flags, unsigned int verb, unsigned int parm)
|
|
{
|
|
unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
|
|
unsigned int res;
|
|
|
|
if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
|
|
return -1;
|
|
|
|
return res;
|
|
}
|
|
|
|
static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
|
|
int flags, unsigned int verb, unsigned int parm)
|
|
{
|
|
unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
|
|
|
|
return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
|
|
}
|
|
|
|
/**
|
|
* snd_hdac_codec_read - send a command and get the response
|
|
* @hdac: the HDAC device
|
|
* @nid: NID to send the command
|
|
* @flags: optional bit flags
|
|
* @verb: the verb to send
|
|
* @parm: the parameter for the verb
|
|
*
|
|
* Send a single command and read the corresponding response.
|
|
*
|
|
* Returns the obtained response value, or -1 for an error.
|
|
*/
|
|
int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
|
|
int flags, unsigned int verb, unsigned int parm)
|
|
{
|
|
return codec_read(hdac, nid, flags, verb, parm);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
|
|
|
|
/**
|
|
* snd_hdac_codec_write - send a single command without waiting for response
|
|
* @hdac: the HDAC device
|
|
* @nid: NID to send the command
|
|
* @flags: optional bit flags
|
|
* @verb: the verb to send
|
|
* @parm: the parameter for the verb
|
|
*
|
|
* Send a single command without waiting for response.
|
|
*
|
|
* Returns 0 if successful, or a negative error code.
|
|
*/
|
|
int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
|
|
int flags, unsigned int verb, unsigned int parm)
|
|
{
|
|
return codec_write(hdac, nid, flags, verb, parm);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
|
|
|
|
/**
|
|
* snd_hdac_check_power_state - check whether the actual power state matches
|
|
* with the target state
|
|
*
|
|
* @hdac: the HDAC device
|
|
* @nid: NID to send the command
|
|
* @target_state: target state to check for
|
|
*
|
|
* Return true if state matches, false if not
|
|
*/
|
|
bool snd_hdac_check_power_state(struct hdac_device *hdac,
|
|
hda_nid_t nid, unsigned int target_state)
|
|
{
|
|
unsigned int state = codec_read(hdac, nid, 0,
|
|
AC_VERB_GET_POWER_STATE, 0);
|
|
|
|
if (state & AC_PWRST_ERROR)
|
|
return true;
|
|
state = (state >> 4) & 0x0f;
|
|
return (state == target_state);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);
|
|
/**
|
|
* snd_hdac_sync_power_state - wait until actual power state matches
|
|
* with the target state
|
|
*
|
|
* @codec: the HDAC device
|
|
* @nid: NID to send the command
|
|
* @power_state: target power state to wait for
|
|
*
|
|
* Return power state or PS_ERROR if codec rejects GET verb.
|
|
*/
|
|
unsigned int snd_hdac_sync_power_state(struct hdac_device *codec,
|
|
hda_nid_t nid, unsigned int power_state)
|
|
{
|
|
unsigned long end_time = jiffies + msecs_to_jiffies(500);
|
|
unsigned int state, actual_state, count;
|
|
|
|
for (count = 0; count < 500; count++) {
|
|
state = snd_hdac_codec_read(codec, nid, 0,
|
|
AC_VERB_GET_POWER_STATE, 0);
|
|
if (state & AC_PWRST_ERROR) {
|
|
msleep(20);
|
|
break;
|
|
}
|
|
actual_state = (state >> 4) & 0x0f;
|
|
if (actual_state == power_state)
|
|
break;
|
|
if (time_after_eq(jiffies, end_time))
|
|
break;
|
|
/* wait until the codec reachs to the target state */
|
|
msleep(1);
|
|
}
|
|
return state;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state);
|