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1100 lines
28 KiB
1100 lines
28 KiB
// 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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|
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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(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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|
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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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|
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if (!conn_len) |
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return 0; /* no connection */ |
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|
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if (conn_len == 1) { |
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/* single connection */ |
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err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, |
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&parm); |
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if (err < 0) |
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return err; |
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if (conn_list) |
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conn_list[0] = parm & mask; |
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return 1; |
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} |
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/* multi connection */ |
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conns = 0; |
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prev_nid = 0; |
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for (i = 0; i < conn_len; i++) { |
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int range_val; |
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hda_nid_t val, n; |
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|
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if (i % num_elems == 0) { |
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err = snd_hdac_read(codec, nid, |
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AC_VERB_GET_CONNECT_LIST, i, |
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&parm); |
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if (err < 0) |
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return -EIO; |
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} |
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range_val = !!(parm & (1 << (shift-1))); /* ranges */ |
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val = parm & mask; |
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if (val == 0 && null_count++) { /* no second chance */ |
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dev_dbg(&codec->dev, |
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"invalid CONNECT_LIST verb %x[%i]:%x\n", |
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nid, i, parm); |
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return 0; |
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} |
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parm >>= shift; |
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if (range_val) { |
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/* ranges between the previous and this one */ |
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if (!prev_nid || prev_nid >= val) { |
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dev_warn(&codec->dev, |
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"invalid dep_range_val %x:%x\n", |
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prev_nid, val); |
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continue; |
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} |
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for (n = prev_nid + 1; n <= val; n++) { |
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if (conn_list) { |
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if (conns >= max_conns) |
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return -ENOSPC; |
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conn_list[conns] = n; |
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} |
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conns++; |
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} |
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} else { |
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if (conn_list) { |
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if (conns >= max_conns) |
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return -ENOSPC; |
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conn_list[conns] = val; |
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} |
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conns++; |
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} |
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prev_nid = val; |
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} |
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return conns; |
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} |
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EXPORT_SYMBOL_GPL(snd_hdac_get_connections); |
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|
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#ifdef CONFIG_PM |
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/** |
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* snd_hdac_power_up - power up the codec |
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* @codec: the codec object |
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* |
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* This function calls the runtime PM helper to power up the given codec. |
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* Unlike snd_hdac_power_up_pm(), you should call this only for the code |
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* path that isn't included in PM path. Otherwise it gets stuck. |
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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_power_up(struct hdac_device *codec) |
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{ |
|
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" }, |
|
{ 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);
|
|
|