diff options
Diffstat (limited to 'sound/hda/ext')
| -rw-r--r-- | sound/hda/ext/Makefile | 4 | ||||
| -rw-r--r-- | sound/hda/ext/hdac_ext_bus.c | 142 | ||||
| -rw-r--r-- | sound/hda/ext/hdac_ext_controller.c | 412 | ||||
| -rw-r--r-- | sound/hda/ext/hdac_ext_stream.c | 453 |
4 files changed, 0 insertions, 1011 deletions
diff --git a/sound/hda/ext/Makefile b/sound/hda/ext/Makefile deleted file mode 100644 index 05883fb28d28..000000000000 --- a/sound/hda/ext/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -snd-hda-ext-core-y := hdac_ext_bus.o hdac_ext_controller.o hdac_ext_stream.o - -obj-$(CONFIG_SND_HDA_EXT_CORE) += snd-hda-ext-core.o diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c deleted file mode 100644 index 6004ea1c373e..000000000000 --- a/sound/hda/ext/hdac_ext_bus.c +++ /dev/null @@ -1,142 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * hdac-ext-bus.c - HD-audio extended core bus functions. - * - * Copyright (C) 2014-2015 Intel Corp - * Author: Jeeja KP <jeeja.kp@intel.com> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/io.h> -#include <sound/hdaudio_ext.h> - -MODULE_DESCRIPTION("HDA extended core"); -MODULE_LICENSE("GPL v2"); - -/** - * snd_hdac_ext_bus_init - initialize a HD-audio extended bus - * @bus: the pointer to HDAC bus object - * @dev: device pointer - * @ops: bus verb operators - * @ext_ops: operators used for ASoC HDA codec drivers - * - * Returns 0 if successful, or a negative error code. - */ -int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev, - const struct hdac_bus_ops *ops, - const struct hdac_ext_bus_ops *ext_ops) -{ - int ret; - - ret = snd_hdac_bus_init(bus, dev, ops); - if (ret < 0) - return ret; - - bus->ext_ops = ext_ops; - /* FIXME: - * Currently only one bus is supported, if there is device with more - * buses, bus->idx should be greater than 0, but there needs to be a - * reliable way to always assign same number. - */ - bus->idx = 0; - bus->cmd_dma_state = true; - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_init); - -/** - * snd_hdac_ext_bus_exit - clean up a HD-audio extended bus - * @bus: the pointer to HDAC bus object - */ -void snd_hdac_ext_bus_exit(struct hdac_bus *bus) -{ - snd_hdac_bus_exit(bus); - WARN_ON(!list_empty(&bus->hlink_list)); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_exit); - -/** - * snd_hdac_ext_bus_device_remove - remove HD-audio extended codec base devices - * - * @bus: the pointer to HDAC bus object - */ -void snd_hdac_ext_bus_device_remove(struct hdac_bus *bus) -{ - struct hdac_device *codec, *__codec; - /* - * we need to remove all the codec devices objects created in the - * snd_hdac_ext_bus_device_init - */ - list_for_each_entry_safe(codec, __codec, &bus->codec_list, list) { - snd_hdac_device_unregister(codec); - put_device(&codec->dev); - } -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove); -#define dev_to_hdac(dev) (container_of((dev), \ - struct hdac_device, dev)) - -static inline struct hdac_driver *get_hdrv(struct device *dev) -{ - struct hdac_driver *hdrv = drv_to_hdac_driver(dev->driver); - return hdrv; -} - -static inline struct hdac_device *get_hdev(struct device *dev) -{ - struct hdac_device *hdev = dev_to_hdac_dev(dev); - return hdev; -} - -static int hda_ext_drv_probe(struct device *dev) -{ - return (get_hdrv(dev))->probe(get_hdev(dev)); -} - -static int hdac_ext_drv_remove(struct device *dev) -{ - return (get_hdrv(dev))->remove(get_hdev(dev)); -} - -static void hdac_ext_drv_shutdown(struct device *dev) -{ - return (get_hdrv(dev))->shutdown(get_hdev(dev)); -} - -/** - * snd_hda_ext_driver_register - register a driver for ext hda devices - * - * @drv: ext hda driver structure - */ -int snd_hda_ext_driver_register(struct hdac_driver *drv) -{ - drv->type = HDA_DEV_ASOC; - drv->driver.bus = &snd_hda_bus_type; - /* we use default match */ - - if (drv->probe) - drv->driver.probe = hda_ext_drv_probe; - if (drv->remove) - drv->driver.remove = hdac_ext_drv_remove; - if (drv->shutdown) - drv->driver.shutdown = hdac_ext_drv_shutdown; - - return driver_register(&drv->driver); -} -EXPORT_SYMBOL_GPL(snd_hda_ext_driver_register); - -/** - * snd_hda_ext_driver_unregister - unregister a driver for ext hda devices - * - * @drv: ext hda driver structure - */ -void snd_hda_ext_driver_unregister(struct hdac_driver *drv) -{ - driver_unregister(&drv->driver); -} -EXPORT_SYMBOL_GPL(snd_hda_ext_driver_unregister); diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c deleted file mode 100644 index c84754434d16..000000000000 --- a/sound/hda/ext/hdac_ext_controller.c +++ /dev/null @@ -1,412 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * hdac-ext-controller.c - HD-audio extended controller functions. - * - * Copyright (C) 2014-2015 Intel Corp - * Author: Jeeja KP <jeeja.kp@intel.com> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <linux/bitfield.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include <sound/hda_register.h> -#include <sound/hdaudio_ext.h> - -/* - * processing pipe helpers - these helpers are useful for dealing with HDA - * new capability of processing pipelines - */ - -/** - * snd_hdac_ext_bus_ppcap_enable - enable/disable processing pipe capability - * @bus: the pointer to HDAC bus object - * @enable: flag to turn on/off the capability - */ -void snd_hdac_ext_bus_ppcap_enable(struct hdac_bus *bus, bool enable) -{ - - if (!bus->ppcap) { - dev_err(bus->dev, "Address of PP capability is NULL"); - return; - } - - if (enable) - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, - AZX_PPCTL_GPROCEN, AZX_PPCTL_GPROCEN); - else - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, - AZX_PPCTL_GPROCEN, 0); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_ppcap_enable); - -/** - * snd_hdac_ext_bus_ppcap_int_enable - ppcap interrupt enable/disable - * @bus: the pointer to HDAC bus object - * @enable: flag to enable/disable interrupt - */ -void snd_hdac_ext_bus_ppcap_int_enable(struct hdac_bus *bus, bool enable) -{ - - if (!bus->ppcap) { - dev_err(bus->dev, "Address of PP capability is NULL\n"); - return; - } - - if (enable) - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, - AZX_PPCTL_PIE, AZX_PPCTL_PIE); - else - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, - AZX_PPCTL_PIE, 0); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_ppcap_int_enable); - -/* - * Multilink helpers - these helpers are useful for dealing with HDA - * new multilink capability - */ - -/** - * snd_hdac_ext_bus_get_ml_capabilities - get multilink capability - * @bus: the pointer to HDAC bus object - * - * This will parse all links and read the mlink capabilities and add them - * in hlink_list of extended hdac bus - * Note: this will be freed on bus exit by driver - */ -int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_bus *bus) -{ - int idx; - u32 link_count; - struct hdac_ext_link *hlink; - u32 leptr; - - link_count = readl(bus->mlcap + AZX_REG_ML_MLCD) + 1; - - dev_dbg(bus->dev, "In %s Link count: %d\n", __func__, link_count); - - for (idx = 0; idx < link_count; idx++) { - hlink = kzalloc(sizeof(*hlink), GFP_KERNEL); - if (!hlink) - return -ENOMEM; - hlink->index = idx; - hlink->bus = bus; - hlink->ml_addr = bus->mlcap + AZX_ML_BASE + - (AZX_ML_INTERVAL * idx); - hlink->lcaps = readl(hlink->ml_addr + AZX_REG_ML_LCAP); - hlink->lsdiid = readw(hlink->ml_addr + AZX_REG_ML_LSDIID); - hlink->slcount = FIELD_GET(AZX_ML_HDA_LCAP_SLCOUNT, hlink->lcaps) + 1; - - if (hdac_ext_link_alt(hlink)) { - leptr = readl(hlink->ml_addr + AZX_REG_ML_LEPTR); - hlink->id = FIELD_GET(AZX_REG_ML_LEPTR_ID, leptr); - } - - /* since link in On, update the ref */ - hlink->ref_count = 1; - - list_add_tail(&hlink->list, &bus->hlink_list); - } - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_ml_capabilities); - -/** - * snd_hdac_ext_link_free_all- free hdac extended link objects - * - * @bus: the pointer to HDAC bus object - */ - -void snd_hdac_ext_link_free_all(struct hdac_bus *bus) -{ - struct hdac_ext_link *hlink; - - while (!list_empty(&bus->hlink_list)) { - hlink = list_first_entry(&bus->hlink_list, struct hdac_ext_link, list); - list_del(&hlink->list); - kfree(hlink); - } -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_link_free_all); - -struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_id(struct hdac_bus *bus, u32 id) -{ - struct hdac_ext_link *hlink; - - list_for_each_entry(hlink, &bus->hlink_list, list) - if (hdac_ext_link_alt(hlink) && hlink->id == id) - return hlink; - return NULL; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_id); - -/** - * snd_hdac_ext_bus_get_hlink_by_addr - get hlink at specified address - * @bus: hlink's parent bus device - * @addr: codec device address - * - * Returns hlink object or NULL if matching hlink is not found. - */ -struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_addr(struct hdac_bus *bus, int addr) -{ - struct hdac_ext_link *hlink; - - list_for_each_entry(hlink, &bus->hlink_list, list) - if (hlink->lsdiid & (0x1 << addr)) - return hlink; - return NULL; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_addr); - -/** - * snd_hdac_ext_bus_get_hlink_by_name - get hlink based on codec name - * @bus: the pointer to HDAC bus object - * @codec_name: codec name - */ -struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_name(struct hdac_bus *bus, - const char *codec_name) -{ - int bus_idx, addr; - - if (sscanf(codec_name, "ehdaudio%dD%d", &bus_idx, &addr) != 2) - return NULL; - if (bus->idx != bus_idx) - return NULL; - if (addr < 0 || addr > 31) - return NULL; - - return snd_hdac_ext_bus_get_hlink_by_addr(bus, addr); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_name); - -static int check_hdac_link_power_active(struct hdac_ext_link *hlink, bool enable) -{ - int timeout; - u32 val; - int mask = (1 << AZX_ML_LCTL_CPA_SHIFT); - - udelay(3); - timeout = 150; - - do { - val = readl(hlink->ml_addr + AZX_REG_ML_LCTL); - if (enable) { - if (((val & mask) >> AZX_ML_LCTL_CPA_SHIFT)) - return 0; - } else { - if (!((val & mask) >> AZX_ML_LCTL_CPA_SHIFT)) - return 0; - } - udelay(3); - } while (--timeout); - - return -EIO; -} - -/** - * snd_hdac_ext_bus_link_power_up -power up hda link - * @hlink: HD-audio extended link - */ -int snd_hdac_ext_bus_link_power_up(struct hdac_ext_link *hlink) -{ - snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL, - AZX_ML_LCTL_SPA, AZX_ML_LCTL_SPA); - - return check_hdac_link_power_active(hlink, true); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up); - -/** - * snd_hdac_ext_bus_link_power_down -power down hda link - * @hlink: HD-audio extended link - */ -int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *hlink) -{ - snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL, AZX_ML_LCTL_SPA, 0); - - return check_hdac_link_power_active(hlink, false); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down); - -/** - * snd_hdac_ext_bus_link_power_up_all -power up all hda link - * @bus: the pointer to HDAC bus object - */ -int snd_hdac_ext_bus_link_power_up_all(struct hdac_bus *bus) -{ - struct hdac_ext_link *hlink = NULL; - int ret; - - list_for_each_entry(hlink, &bus->hlink_list, list) { - ret = snd_hdac_ext_bus_link_power_up(hlink); - if (ret < 0) - return ret; - } - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up_all); - -/** - * snd_hdac_ext_bus_link_power_down_all -power down all hda link - * @bus: the pointer to HDAC bus object - */ -int snd_hdac_ext_bus_link_power_down_all(struct hdac_bus *bus) -{ - struct hdac_ext_link *hlink = NULL; - int ret; - - list_for_each_entry(hlink, &bus->hlink_list, list) { - ret = snd_hdac_ext_bus_link_power_down(hlink); - if (ret < 0) - return ret; - } - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down_all); - -/** - * snd_hdac_ext_bus_link_set_stream_id - maps stream id to link output - * @link: HD-audio ext link to set up - * @stream: stream id - */ -void snd_hdac_ext_bus_link_set_stream_id(struct hdac_ext_link *link, - int stream) -{ - snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_set_stream_id); - -/** - * snd_hdac_ext_bus_link_clear_stream_id - maps stream id to link output - * @link: HD-audio ext link to set up - * @stream: stream id - */ -void snd_hdac_ext_bus_link_clear_stream_id(struct hdac_ext_link *link, - int stream) -{ - snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 0); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_clear_stream_id); - -int snd_hdac_ext_bus_link_get(struct hdac_bus *bus, - struct hdac_ext_link *hlink) -{ - unsigned long codec_mask; - int ret = 0; - - mutex_lock(&bus->lock); - - /* - * if we move from 0 to 1, count will be 1 so power up this link - * as well, also check the dma status and trigger that - */ - if (++hlink->ref_count == 1) { - if (!bus->cmd_dma_state) { - snd_hdac_bus_init_cmd_io(bus); - bus->cmd_dma_state = true; - } - - ret = snd_hdac_ext_bus_link_power_up(hlink); - - /* - * clear the register to invalidate all the output streams - */ - snd_hdac_updatew(hlink->ml_addr, AZX_REG_ML_LOSIDV, - AZX_ML_LOSIDV_STREAM_MASK, 0); - /* - * wait for 521usec for codec to report status - * HDA spec section 4.3 - Codec Discovery - */ - udelay(521); - codec_mask = snd_hdac_chip_readw(bus, STATESTS); - dev_dbg(bus->dev, "codec_mask = 0x%lx\n", codec_mask); - snd_hdac_chip_writew(bus, STATESTS, codec_mask); - if (!bus->codec_mask) - bus->codec_mask = codec_mask; - } - - mutex_unlock(&bus->lock); - return ret; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_get); - -int snd_hdac_ext_bus_link_put(struct hdac_bus *bus, - struct hdac_ext_link *hlink) -{ - int ret = 0; - struct hdac_ext_link *hlink_tmp; - bool link_up = false; - - mutex_lock(&bus->lock); - - /* - * if we move from 1 to 0, count will be 0 - * so power down this link as well - */ - if (--hlink->ref_count == 0) { - ret = snd_hdac_ext_bus_link_power_down(hlink); - - /* - * now check if all links are off, if so turn off - * cmd dma as well - */ - list_for_each_entry(hlink_tmp, &bus->hlink_list, list) { - if (hlink_tmp->ref_count) { - link_up = true; - break; - } - } - - if (!link_up) { - snd_hdac_bus_stop_cmd_io(bus); - bus->cmd_dma_state = false; - } - } - - mutex_unlock(&bus->lock); - return ret; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_put); - -static void hdac_ext_codec_link_up(struct hdac_device *codec) -{ - const char *devname = dev_name(&codec->dev); - struct hdac_ext_link *hlink = - snd_hdac_ext_bus_get_hlink_by_name(codec->bus, devname); - - if (hlink) - snd_hdac_ext_bus_link_get(codec->bus, hlink); -} - -static void hdac_ext_codec_link_down(struct hdac_device *codec) -{ - const char *devname = dev_name(&codec->dev); - struct hdac_ext_link *hlink = - snd_hdac_ext_bus_get_hlink_by_name(codec->bus, devname); - - if (hlink) - snd_hdac_ext_bus_link_put(codec->bus, hlink); -} - -void snd_hdac_ext_bus_link_power(struct hdac_device *codec, bool enable) -{ - struct hdac_bus *bus = codec->bus; - bool oldstate = test_bit(codec->addr, &bus->codec_powered); - - if (enable == oldstate) - return; - - snd_hdac_bus_link_power(codec, enable); - - if (enable) - hdac_ext_codec_link_up(codec); - else - hdac_ext_codec_link_down(codec); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power); diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c deleted file mode 100644 index a3ac738f1130..000000000000 --- a/sound/hda/ext/hdac_ext_stream.c +++ /dev/null @@ -1,453 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * hdac-ext-stream.c - HD-audio extended stream operations. - * - * Copyright (C) 2015 Intel Corp - * Author: Jeeja KP <jeeja.kp@intel.com> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <linux/delay.h> -#include <linux/pci.h> -#include <linux/pci_ids.h> -#include <linux/slab.h> -#include <sound/pcm.h> -#include <sound/hda_register.h> -#include <sound/hdaudio_ext.h> -#include <sound/compress_driver.h> - -/** - * snd_hdac_ext_host_stream_setup - Setup a HOST stream. - * @hext_stream: HDAudio stream to set up. - * @code_loading: Whether the stream is for PCM or code-loading. - * - * Return: Zero on success or negative error code. - */ -int snd_hdac_ext_host_stream_setup(struct hdac_ext_stream *hext_stream, bool code_loading) -{ - return hext_stream->host_setup(hdac_stream(hext_stream), code_loading); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_host_stream_setup); - -/** - * snd_hdac_apl_host_stream_setup - Setup a HOST stream following procedure - * recommended for ApolloLake devices. - * @hstream: HDAudio stream to set up. - * @code_loading: Whether the stream is for PCM or code-loading. - * - * Return: Zero on success or negative error code. - */ -static int snd_hdac_apl_host_stream_setup(struct hdac_stream *hstream, bool code_loading) -{ - struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream); - int ret; - - snd_hdac_ext_stream_decouple(hstream->bus, hext_stream, false); - ret = snd_hdac_stream_setup(hstream, code_loading); - snd_hdac_ext_stream_decouple(hstream->bus, hext_stream, true); - - return ret; -} - -/** - * snd_hdac_ext_stream_init - initialize each stream (aka device) - * @bus: HD-audio core bus - * @hext_stream: HD-audio ext core stream object to initialize - * @idx: stream index number - * @direction: stream direction (SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE) - * @tag: the tag id to assign - * - * initialize the stream, if ppcap is enabled then init those and then - * invoke hdac stream initialization routine - */ -static void snd_hdac_ext_stream_init(struct hdac_bus *bus, - struct hdac_ext_stream *hext_stream, - int idx, int direction, int tag) -{ - if (bus->ppcap) { - hext_stream->pphc_addr = bus->ppcap + AZX_PPHC_BASE + - AZX_PPHC_INTERVAL * idx; - - hext_stream->pplc_addr = bus->ppcap + AZX_PPLC_BASE + - AZX_PPLC_MULTI * bus->num_streams + - AZX_PPLC_INTERVAL * idx; - } - - hext_stream->decoupled = false; - snd_hdac_stream_init(bus, &hext_stream->hstream, idx, direction, tag); -} - -/** - * snd_hdac_ext_stream_init_all - create and initialize the stream objects - * for an extended hda bus - * @bus: HD-audio core bus - * @start_idx: start index for streams - * @num_stream: number of streams to initialize - * @dir: direction of streams - */ -int snd_hdac_ext_stream_init_all(struct hdac_bus *bus, int start_idx, - int num_stream, int dir) -{ - struct pci_dev *pci = to_pci_dev(bus->dev); - int (*setup_op)(struct hdac_stream *, bool); - int stream_tag = 0; - int i, tag, idx = start_idx; - - if (pci->device == PCI_DEVICE_ID_INTEL_HDA_APL) - setup_op = snd_hdac_apl_host_stream_setup; - else - setup_op = snd_hdac_stream_setup; - - for (i = 0; i < num_stream; i++) { - struct hdac_ext_stream *hext_stream = - kzalloc(sizeof(*hext_stream), GFP_KERNEL); - if (!hext_stream) - return -ENOMEM; - tag = ++stream_tag; - snd_hdac_ext_stream_init(bus, hext_stream, idx, dir, tag); - idx++; - hext_stream->host_setup = setup_op; - } - - return 0; - -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_init_all); - -/** - * snd_hdac_ext_stream_free_all - free hdac extended stream objects - * - * @bus: HD-audio core bus - */ -void snd_hdac_ext_stream_free_all(struct hdac_bus *bus) -{ - struct hdac_stream *s, *_s; - struct hdac_ext_stream *hext_stream; - - list_for_each_entry_safe(s, _s, &bus->stream_list, list) { - hext_stream = stream_to_hdac_ext_stream(s); - snd_hdac_ext_stream_decouple(bus, hext_stream, false); - list_del(&s->list); - kfree(hext_stream); - } -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_free_all); - -void snd_hdac_ext_stream_decouple_locked(struct hdac_bus *bus, - struct hdac_ext_stream *hext_stream, - bool decouple) -{ - struct hdac_stream *hstream = &hext_stream->hstream; - u32 val; - int mask = AZX_PPCTL_PROCEN(hstream->index); - - val = readw(bus->ppcap + AZX_REG_PP_PPCTL) & mask; - - if (decouple && !val) - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, mask); - else if (!decouple && val) - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, 0); - - hext_stream->decoupled = decouple; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_decouple_locked); - -/** - * snd_hdac_ext_stream_decouple - decouple the hdac stream - * @bus: HD-audio core bus - * @hext_stream: HD-audio ext core stream object to initialize - * @decouple: flag to decouple - */ -void snd_hdac_ext_stream_decouple(struct hdac_bus *bus, - struct hdac_ext_stream *hext_stream, bool decouple) -{ - spin_lock_irq(&bus->reg_lock); - snd_hdac_ext_stream_decouple_locked(bus, hext_stream, decouple); - spin_unlock_irq(&bus->reg_lock); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_decouple); - -/** - * snd_hdac_ext_stream_start - start a stream - * @hext_stream: HD-audio ext core stream to start - */ -void snd_hdac_ext_stream_start(struct hdac_ext_stream *hext_stream) -{ - snd_hdac_updatel(hext_stream->pplc_addr, AZX_REG_PPLCCTL, - AZX_PPLCCTL_RUN, AZX_PPLCCTL_RUN); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_start); - -/** - * snd_hdac_ext_stream_clear - stop a stream DMA - * @hext_stream: HD-audio ext core stream to stop - */ -void snd_hdac_ext_stream_clear(struct hdac_ext_stream *hext_stream) -{ - snd_hdac_updatel(hext_stream->pplc_addr, AZX_REG_PPLCCTL, AZX_PPLCCTL_RUN, 0); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_clear); - -/** - * snd_hdac_ext_stream_reset - reset a stream - * @hext_stream: HD-audio ext core stream to reset - */ -void snd_hdac_ext_stream_reset(struct hdac_ext_stream *hext_stream) -{ - unsigned char val; - int timeout; - - snd_hdac_ext_stream_clear(hext_stream); - - snd_hdac_updatel(hext_stream->pplc_addr, AZX_REG_PPLCCTL, - AZX_PPLCCTL_STRST, AZX_PPLCCTL_STRST); - udelay(3); - timeout = 50; - do { - val = readl(hext_stream->pplc_addr + AZX_REG_PPLCCTL) & - AZX_PPLCCTL_STRST; - if (val) - break; - udelay(3); - } while (--timeout); - val &= ~AZX_PPLCCTL_STRST; - writel(val, hext_stream->pplc_addr + AZX_REG_PPLCCTL); - udelay(3); - - timeout = 50; - /* waiting for hardware to report that the stream is out of reset */ - do { - val = readl(hext_stream->pplc_addr + AZX_REG_PPLCCTL) & AZX_PPLCCTL_STRST; - if (!val) - break; - udelay(3); - } while (--timeout); - -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_reset); - -/** - * snd_hdac_ext_stream_setup - set up the SD for streaming - * @hext_stream: HD-audio ext core stream to set up - * @fmt: stream format - */ -int snd_hdac_ext_stream_setup(struct hdac_ext_stream *hext_stream, int fmt) -{ - struct hdac_stream *hstream = &hext_stream->hstream; - unsigned int val; - - /* make sure the run bit is zero for SD */ - snd_hdac_ext_stream_clear(hext_stream); - /* program the stream_tag */ - val = readl(hext_stream->pplc_addr + AZX_REG_PPLCCTL); - val = (val & ~AZX_PPLCCTL_STRM_MASK) | - (hstream->stream_tag << AZX_PPLCCTL_STRM_SHIFT); - writel(val, hext_stream->pplc_addr + AZX_REG_PPLCCTL); - - /* program the stream format */ - writew(fmt, hext_stream->pplc_addr + AZX_REG_PPLCFMT); - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_setup); - -static struct hdac_ext_stream * -hdac_ext_link_dma_stream_assign(struct hdac_bus *bus, - struct snd_pcm_substream *substream) -{ - struct hdac_ext_stream *res = NULL; - struct hdac_stream *hstream = NULL; - - if (!bus->ppcap) { - dev_err(bus->dev, "stream type not supported\n"); - return NULL; - } - - spin_lock_irq(&bus->reg_lock); - list_for_each_entry(hstream, &bus->stream_list, list) { - struct hdac_ext_stream *hext_stream = container_of(hstream, - struct hdac_ext_stream, - hstream); - if (hstream->direction != substream->stream) - continue; - - /* check if link stream is available */ - if (!hext_stream->link_locked) { - res = hext_stream; - break; - } - - } - if (res) { - snd_hdac_ext_stream_decouple_locked(bus, res, true); - res->link_locked = 1; - res->link_substream = substream; - } - spin_unlock_irq(&bus->reg_lock); - return res; -} - -static struct hdac_ext_stream * -hdac_ext_host_dma_stream_assign(struct hdac_bus *bus, - struct snd_pcm_substream *substream) -{ - struct hdac_ext_stream *res = NULL; - struct hdac_stream *hstream = NULL; - - if (!bus->ppcap) { - dev_err(bus->dev, "stream type not supported\n"); - return NULL; - } - - spin_lock_irq(&bus->reg_lock); - list_for_each_entry(hstream, &bus->stream_list, list) { - struct hdac_ext_stream *hext_stream = container_of(hstream, - struct hdac_ext_stream, - hstream); - if (hstream->direction != substream->stream) - continue; - - if (!hstream->opened) { - res = hext_stream; - break; - } - } - if (res) { - snd_hdac_ext_stream_decouple_locked(bus, res, true); - res->hstream.opened = 1; - res->hstream.running = 0; - res->hstream.substream = substream; - } - spin_unlock_irq(&bus->reg_lock); - - return res; -} - -/** - * snd_hdac_ext_stream_assign - assign a stream for the PCM - * @bus: HD-audio core bus - * @substream: PCM substream to assign - * @type: type of stream (coupled, host or link stream) - * - * This assigns the stream based on the type (coupled/host/link), for the - * given PCM substream, assigns it and returns the stream object - * - * coupled: Looks for an unused stream - * host: Looks for an unused decoupled host stream - * link: Looks for an unused decoupled link stream - * - * If no stream is free, returns NULL. The function tries to keep using - * the same stream object when it's used beforehand. when a stream is - * decoupled, it becomes a host stream and link stream. - */ -struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_bus *bus, - struct snd_pcm_substream *substream, - int type) -{ - struct hdac_ext_stream *hext_stream = NULL; - struct hdac_stream *hstream = NULL; - - switch (type) { - case HDAC_EXT_STREAM_TYPE_COUPLED: - hstream = snd_hdac_stream_assign(bus, substream); - if (hstream) - hext_stream = container_of(hstream, - struct hdac_ext_stream, - hstream); - return hext_stream; - - case HDAC_EXT_STREAM_TYPE_HOST: - return hdac_ext_host_dma_stream_assign(bus, substream); - - case HDAC_EXT_STREAM_TYPE_LINK: - return hdac_ext_link_dma_stream_assign(bus, substream); - - default: - return NULL; - } -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_assign); - -/** - * snd_hdac_ext_stream_release - release the assigned stream - * @hext_stream: HD-audio ext core stream to release - * @type: type of stream (coupled, host or link stream) - * - * Release the stream that has been assigned by snd_hdac_ext_stream_assign(). - */ -void snd_hdac_ext_stream_release(struct hdac_ext_stream *hext_stream, int type) -{ - struct hdac_bus *bus = hext_stream->hstream.bus; - - switch (type) { - case HDAC_EXT_STREAM_TYPE_COUPLED: - snd_hdac_stream_release(&hext_stream->hstream); - break; - - case HDAC_EXT_STREAM_TYPE_HOST: - spin_lock_irq(&bus->reg_lock); - /* couple link only if not in use */ - if (!hext_stream->link_locked) - snd_hdac_ext_stream_decouple_locked(bus, hext_stream, false); - snd_hdac_stream_release_locked(&hext_stream->hstream); - spin_unlock_irq(&bus->reg_lock); - break; - - case HDAC_EXT_STREAM_TYPE_LINK: - spin_lock_irq(&bus->reg_lock); - /* couple host only if not in use */ - if (!hext_stream->hstream.opened) - snd_hdac_ext_stream_decouple_locked(bus, hext_stream, false); - hext_stream->link_locked = 0; - hext_stream->link_substream = NULL; - spin_unlock_irq(&bus->reg_lock); - break; - - default: - dev_dbg(bus->dev, "Invalid type %d\n", type); - } - -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_release); - -/** - * snd_hdac_ext_cstream_assign - assign a host stream for compress - * @bus: HD-audio core bus - * @cstream: Compress stream to assign - * - * Assign an unused host stream for the given compress stream. - * If no stream is free, NULL is returned. Stream is decoupled - * before assignment. - */ -struct hdac_ext_stream *snd_hdac_ext_cstream_assign(struct hdac_bus *bus, - struct snd_compr_stream *cstream) -{ - struct hdac_ext_stream *res = NULL; - struct hdac_stream *hstream; - - spin_lock_irq(&bus->reg_lock); - list_for_each_entry(hstream, &bus->stream_list, list) { - struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream); - - if (hstream->direction != cstream->direction) - continue; - - if (!hstream->opened) { - res = hext_stream; - break; - } - } - - if (res) { - snd_hdac_ext_stream_decouple_locked(bus, res, true); - res->hstream.opened = 1; - res->hstream.running = 0; - res->hstream.cstream = cstream; - } - spin_unlock_irq(&bus->reg_lock); - - return res; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_cstream_assign); |