1. 16 4月, 2015 1 次提交
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      ALSA: hda - Add the controller helper codes to hda-core module · 14752412
      Takashi Iwai 提交于
      This patch adds the controller helper codes to hda-core library.
      The I/O access ops are added to the bus ops.  The CORB/RIRB, the basic
      attributes like irq# and iomap address, some locks and the list of
      streams are added to the bus object, together with the stream object
      and its helpers.
      
      Currently the codes are just copied from the legacy driver, so you can
      find duplicated codes in both directories.  Only constants are removed
      from the original hda_controller.h.  More integration work will follow
      in the later patches.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      14752412
  2. 23 3月, 2015 7 次提交
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      ALSA: hda - Add regmap support · 4d75faa0
      Takashi Iwai 提交于
      This patch adds an infrastructure to support regmap-based verb
      accesses.  Because o the asymmetric nature of HD-audio verbs,
      especially the amp verbs, we need to translate the verbs as a sort of
      pseudo registers to be mapped uniquely in regmap.
      
      In this patch, a pseudo register is built from the NID, the
      AC_VERB_GET_* and 8bit parameters, i.e. almost in the form to be sent
      to HD-audio bus but without codec address field.  OTOH, for writing,
      the same pseudo register is translated to AC_VERB_SET_* automatically.
      The AC_VERB_SET_AMP_* verb is re-encoded from the corresponding
      AC_VERB_GET_AMP_* verb and parameter at writing.
      
      Some verbs has a single command for read but multiple for writes.  A
      write for such a verb is split automatically to multiple verbs.
      
      The patch provides also a few handy helper functions.  They are
      designed to be accessible even without regmap.  When no regmap is set
      up (e.g. before the codec device instantiation), the direct hardware
      access is used.  Also, it tries to avoid the unnecessary power-up.
      The power up/down sequence is performed only on demand.
      
      The codec driver needs to call snd_hdac_regmap_exit() and
      snd_hdac_regmap_exit() at probe and remove if it wants the regmap
      access.
      
      There is one flag added to hdac_device.  When the flag lazy_cache is
      set, regmap helper ignores a write for a suspended device and returns
      as if it was actually written.  It reduces the hardware access pretty
      much, e.g. when adjusting the mixer volume while in idle.  This
      assumes that the driver will sync the cache later at resume properly,
      so use it carefully.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      4d75faa0
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      ALSA: hda - Move generic array helpers to core lib · 71fc4c7e
      Takashi Iwai 提交于
      This will be used by the regmap support.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      71fc4c7e
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      ALSA: hda - Re-add tracepoints to HD-audio core driver · e311782a
      Takashi Iwai 提交于
      Now let's take the basic tracepoints back to the HD-audio driver.
      The three bus tracepoints, hda_send_cmd, hda_get_response and
      hda_unsol_event are revived but in a slightly different form.
      Since we don't assign the card number there, print the bus device name
      instead.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e311782a
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      ALSA: hda - Add widget sysfs tree · 3256be65
      Takashi Iwai 提交于
      This patch changes the sysfs files assigned to the codec device on the
      bus which were formerly identical with hwdep sysfs files.  Now it
      shows only a few core parameter, vendor_id, subsystem_id, revision_id,
      afg, mfg, vendor_name and chip_name.
      
      In addition, now a widget tree is added to the bus device sysfs
      directory for showing the widget topology and attributes.  It's just a
      flat tree consisting of subdirectories named as the widget NID
      including various attributes like widget capability bits.  The AFG
      (usually NID 0x01) is always found there, and it contains always
      amp_in_caps, amp_out_caps and power_caps files.  Each of these
      attributes show a single value.  The rest are the widget nodes
      belonging to that AFG.  Note that the child node might not start from
      0x02 but from another value like 0x0a.
      
      Each child node may contain caps, pin_caps, amp_in_caps, amp_out_caps,
      power_caps and connections files.  The caps (representing the widget
      capability bits) always contain a value.  The rest may contain
      value(s) if the attribute exists on the node.  Only connections file
      show multiple values while other attributes have zero or one single
      value.
      
      An example of ls -R output is like below:
      % ls -R /sys/bus/hdaudio/devices/hdaudioC0D0/
      /sys/bus/hdaudio/devices/hdaudioC0D0/widgets/:
      01/  04/  07/  0a/  0d/  10/  13/  16/  19/  1c/  1f/  22/
      02/  05/  08/  0b/  0e/  11/  14/  17/  1a/  1d/  20/  23/
      03/  06/  09/  0c/  0f/  12/  15/  18/  1b/  1e/  21/
      
      /sys/bus/hdaudio/devices/hdaudioC0D0/widgets/01:
      amp_in_caps  amp_out_caps  power_caps
      
      /sys/bus/hdaudio/devices/hdaudioC0D0/widgets/02:
      amp_in_caps  amp_out_caps  caps  connections  pin_caps  pin_cfg
      power_caps
      
      /sys/bus/hdaudio/devices/hdaudioC0D0/widgets/03:
      .....
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      3256be65
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      ALSA: hda - Move a part of hda_codec stuff into hdac_device · 7639a06c
      Takashi Iwai 提交于
      Now some codes and functionalities of hda_codec struct are moved to
      hdac_device struct.  A few basic attributes like the codec address,
      vendor ID number, FG numbers, etc are moved to hdac_device, and they
      are accessed like codec->core.addr.  The basic verb exec functions are
      moved, too.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      7639a06c
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      ALSA: hda - Move some codes up to hdac_bus struct · d068ebc2
      Takashi Iwai 提交于
      A few basic codes for communicating over HD-audio bus are moved to
      struct hdac_bus now.  It has only command and get_response ops in
      addition to the unsolicited event handling.
      
      Note that the codec-side tracing support is disabled temporarily
      during this transition due to the code shuffling.  It will be
      re-enabled later once when all pieces are settled down.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      d068ebc2
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      ALSA: hda - Make snd_hda_bus_type public · e3d280fc
      Takashi Iwai 提交于
      Define the common hd-audio driver and device types to bind over
      snd_hda_bus_type publicly.  This allows to implement other type of
      device and driver code over hd-audio bus.
      
      Now both struct hda_codec and struct hda_codec_driver inherit these
      new struct hdac_device and struct hdac_driver, respectively.
      
      The bus registration is done in subsys_initcall() to assure it
      before any other driver registrations.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e3d280fc