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* [RFC v2 0/13] dw_hdmi cleanups, audio preparation, helpers and ahb audio support
@ 2015-04-02  9:20 Russell King - ARM Linux
  2015-04-02  9:21 ` [PATCH RFC v2 01/13] drm: imx/dw_hdmi: move phy comments Russell King
                   ` (13 more replies)
  0 siblings, 14 replies; 74+ messages in thread
From: Russell King - ARM Linux @ 2015-04-02  9:20 UTC (permalink / raw)
  To: alsa-devel, dri-devel, linux-arm-kernel
  Cc: Fabio Estevam, Jaroslav Kysela, Mark Brown, Yakir Yang

I'm sending this series for comments, and to allow people to update
their code bases (for those who are using my AHB audio driver on
iMX6).  This is really several series, and I'm not expecting this
to be ready for the upcoming merge window.  That said, if anyone
wants to say that they're happy with some of the initial six patches,
I'm happy to queue those for David, if he's willing to take them.

This series applies on top of my previous series, with the three
patches from the rockchip guys applied, iow:

 drm: rockchip/dw_hdmi-rockchip: improve for HDMI electrical test
 drm: bridge/dw_hdmi: separate VLEVCTRL settting into platform driver
 drm: bridge/dw_hdmi: fixed codec style
 drm: bridge/dw_hdmi: adjust n/cts setting order
 drm: bridge/dw_hdmi: protect n/cts setting with a mutex
 drm: bridge/dw_hdmi: combine hdmi_set_clock_regenerator_n() and hdmi_regenerate_cts()

The first four patches are a few cleanups to the dw_hdmi driver.

The next two patches introduce new interfaces to the dw_hdmi driver
to support AHB audio, including the errata found on iMX6 which
requires N to be programmed to zero when the audio FIFO is not full.
I'm expecting some discussion with these last two as we try to work
out how to deal with the two variants of audio support for this part
(AHB audio vs I2S audio).

The following three add various helpers to the DRM and ALSA subsystems
for audio support which is non-specific to the AHB audio driver.  For
DRM, this is a helper macro to obtain the pointer into the short audio
descriptors.  For ALSA, it's a set of helpers to restrict an audio PCM
device's capabilities according to the ELD, and to generate the IEC958
channel status data.  If these helpers are acceptable, we can convert
a number of drivers to them.

The ELD helper isn't quite finished, but should be sufficient for
initial testing.

The last two patches add support for the dw_hdmi audio.  This is an
ALSA driver rather than an ASoC driver as it's a pretty simple affair.
I couldn't find a suitable location in the sound/ subtree to place it,
so I've placed it next to the bridge - yes, we probably need to find
it a better home in the sound/ subtree, but it currently makes
use of dw_hdmi.h in the directory it lives.

 drivers/gpu/drm/bridge/Kconfig             |  11 +
 drivers/gpu/drm/bridge/Makefile            |   1 +
 drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c | 566 +++++++++++++++++++++++++++++
 drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.h |  14 +
 drivers/gpu/drm/bridge/dw_hdmi.c           | 321 +++++++++-------
 drivers/gpu/drm/bridge/dw_hdmi.h           |   3 +
 drivers/gpu/drm/imx/dw_hdmi-imx.c          |   5 +
 include/drm/bridge/dw_hdmi.h               |   7 +
 include/drm/drm_edid.h                     |  19 +
 include/sound/pcm_drm_eld.h                |   6 +
 include/sound/pcm_iec958.h                 |   9 +
 sound/core/Kconfig                         |   6 +
 sound/core/Makefile                        |   2 +
 sound/core/pcm_drm_eld.c                   |  92 +++++
 sound/core/pcm_iec958.c                    |  95 +++++
 15 files changed, 1029 insertions(+), 128 deletions(-)

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according to speedtest.net.
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Thread overview: 74+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-04-02  9:20 [RFC v2 0/13] dw_hdmi cleanups, audio preparation, helpers and ahb audio support Russell King - ARM Linux
2015-04-02  9:21 ` [PATCH RFC v2 01/13] drm: imx/dw_hdmi: move phy comments Russell King
2015-04-02  9:21 ` [PATCH RFC v2 02/13] drm: bridge/dw_hdmi: clean up phy configuration Russell King
2015-04-02  9:21 ` [PATCH RFC v2 03/13] drm: bridge/dw_hdmi: clean up hdmi_set_clk_regenerator() Russell King
2015-04-02  9:21 ` [PATCH RFC v2 04/13] drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode() Russell King
2015-04-02  9:21 ` [PATCH RFC v2 05/13] drm: bridge/dw_hdmi: simplify hdmi_config_AVI() a little Russell King
2015-04-02  9:21 ` [PATCH RFC v2 06/13] drm: bridge/dw_hdmi: remove mhsyncpolarity/mvsyncpolarity/minterlaced Russell King
2015-04-02  9:21 ` [PATCH RFC v2 07/13] drm: bridge/dw_hdmi: introduce interface to setting sample rate Russell King
2015-04-02  9:21 ` [PATCH RFC v2 08/13] drm: bridge/dw_hdmi: introduce interfaces to enable and disable audio Russell King
2015-04-02  9:22 ` [PATCH RFC v2 09/13] drm/edid: add function to help find SADs Russell King
2015-04-02  9:22 ` [PATCH RFC v2 10/13] sound/core: add DRM ELD helper Russell King
2015-04-05 15:57   ` Takashi Iwai
2015-04-05 16:20     ` Russell King - ARM Linux
2015-04-05 16:46       ` Takashi Iwai
2015-04-05 17:26         ` Russell King - ARM Linux
2015-05-06 17:02           ` Anssi Hannula
2015-05-07 10:41             ` Russell King - ARM Linux
2015-05-07 11:11               ` Lars-Peter Clausen
2015-05-08 10:56           ` [alsa-devel] " Jyri Sarha
2015-05-08 11:42             ` Russell King - ARM Linux
2015-05-05 22:35     ` Mark Brown
2015-05-06  8:58       ` Liam Girdwood
2015-05-08 13:16   ` [alsa-devel] " Jyri Sarha
2015-05-08 13:27     ` Russell King - ARM Linux
2015-05-08 13:37       ` Jyri Sarha
2015-04-02  9:22 ` [PATCH RFC v2 11/13] sound/core: add IEC958 channel status helper Russell King
2015-04-02  9:22 ` [PATCH RFC v2 12/13] drm: bridge/dw_hdmi-ahb-audio: add audio driver Russell King
2015-04-02  9:22 ` [PATCH RFC v2 13/13] drm: bridge/dw_hdmi-ahb-audio: parse ELD from HDMI driver Russell King
2015-05-09 10:25 ` [PATCH v3 0/13] dw_hdmi cleanups, audio preparation, helpers and ahb audio support Russell King - ARM Linux
2015-05-09 10:25   ` [PATCH 01/13] drm: imx/dw_hdmi: move phy comments Russell King
2015-05-09 10:26   ` [PATCH 02/13] drm: bridge/dw_hdmi: clean up phy configuration Russell King
2015-05-22 15:19     ` Yakir
2015-05-09 10:26   ` [PATCH 03/13] drm: bridge/dw_hdmi: clean up hdmi_set_clk_regenerator() Russell King
2015-05-22 15:22     ` Yakir
2015-05-09 10:26   ` [PATCH 04/13] drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode() Russell King
2015-05-09 10:26   ` [PATCH 05/13] drm: bridge/dw_hdmi: simplify hdmi_config_AVI() a little Russell King
2015-05-09 10:26   ` [PATCH 06/13] drm: bridge/dw_hdmi: remove mhsyncpolarity/mvsyncpolarity/minterlaced Russell King
2015-05-09 10:26   ` [PATCH 07/13] drm: bridge/dw_hdmi: introduce interface to setting sample rate Russell King
2015-05-22 15:26     ` Yakir
2015-05-09 10:26   ` [PATCH 08/13] drm: bridge/dw_hdmi: introduce interfaces to enable and disable audio Russell King
2015-05-22 15:28     ` Yakir
2015-05-09 10:26   ` [PATCH 09/13] drm/edid: add function to help find SADs Russell King
2015-05-09 10:26   ` [PATCH 10/13] sound/core: add DRM ELD helper Russell King
2015-05-22 12:20     ` [alsa-devel] " Mark Brown
2015-05-22 13:15       ` Russell King - ARM Linux
2015-05-22 13:30         ` Takashi Iwai
2015-05-22 13:53           ` Russell King - ARM Linux
2015-05-22 13:54             ` Takashi Iwai
2015-05-22 14:00               ` Russell King - ARM Linux
2015-05-22 14:02                 ` Takashi Iwai
2015-05-22 14:05                   ` Takashi Iwai
2015-05-22 16:12                     ` Russell King - ARM Linux
2015-05-09 10:26   ` [PATCH 11/13] sound/core: add IEC958 channel status helper Russell King
2015-05-22 12:40     ` Mark Brown
2015-05-09 10:26   ` [PATCH 12/13] drm: bridge/dw_hdmi-ahb-audio: add audio driver Russell King
2015-05-09 16:49     ` [alsa-devel] " Anssi Hannula
2015-05-09 16:55       ` Russell King - ARM Linux
2015-05-09 17:07         ` Anssi Hannula
2015-05-09 17:40           ` Russell King - ARM Linux
2015-05-09 17:53             ` Russell King - ARM Linux
2015-05-09 17:55             ` Anssi Hannula
2015-05-09 18:11               ` Russell King - ARM Linux
2015-05-10 18:59                 ` Anssi Hannula
2015-05-10 19:33                   ` Russell King - ARM Linux
2015-05-10 20:47                     ` Anssi Hannula
2015-05-11 15:58                     ` Mark Brown
2015-05-09 10:26   ` [PATCH 13/13] drm: bridge/dw_hdmi-ahb-audio: parse ELD from HDMI driver Russell King
2015-05-27 10:43     ` Daniel Vetter
2015-05-27 11:43       ` Mark Brown
2015-05-27 17:31       ` Russell King - ARM Linux
2015-05-27 21:29         ` Daniel Vetter
2015-05-27 21:44           ` Russell King - ARM Linux
2015-05-28  6:43             ` Daniel Vetter
2015-05-28  4:56         ` [alsa-devel] " Takashi Iwai

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