From: Marcus Cooper codekipper@gmail.com
Hi All, please find attached a series of patches to bring i2s support to the Allwinner H3 SoC. This has been tested with the following setups:
A20 Olimex EVB connected to a pcm5102 Orange Pi 2 connected to a uda1380 Orange Pi 2 hdmi audio playback Pine 64 connected to the audio DAC board
To get i2s working some additional patches are required which will be delivered later. For now they have been pushed here
https://github.com/codekipper/linux-sunxi/commits/sunxi-audio-h3
I don't own a A33 device which uses the i2s block for the audio codec so if someone could test against that it would be much appreciated.
I'm also wondering if there is a preferred way of setting the lrclk size in the dts?..currently it is set to the sample width but for example the pcm5102a wants it to be 32 bits whatever the sample rate.
Thanks in advance, CK
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v5 changes compared to v4 are: - fixed bad logic in fmt0 set LRCK period define. - fixed PTR_ERR checks in init of regmap fields - added reviewed-by to commit messages - removed delivered patches
v4 changes compared to v3 are: - moved clkdiv variant adjustment out of function - used PTR_ERR_OR_ZERO for checks - tidy up of extra lines and lines over 80 chars. - reduced names of polarity, wss and sr reg fields. - added reviewed-by to commit messages - added comments for functionality that hasn't been implemented yet. - removed delivered patches
v3 changes compared to v2 are: - initial changes to prepare driver for newer SoCs has been broken down into smaller patches - reduce use of regmap fields to where just needed. - clkdiv expansion will be delivered later. - defines for H3 variant segregated. - fixed regmap config issue with SUN8I_I2S_FIFO_TX_REG.
v2 changes compared to v1 are: - massive refactoring to remove duplicate code making use of regmap_fields. - extending the clock divisors. - removed code that should be delivered when we support 20/24bits
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Marcus Cooper (8): ASoC: sun4i-i2s: Add regmap fields for channels ASoC: sun4i-i2s: Add regfields for word size select and sample resolution ASoC: sun4i-i2s: bclk and lrclk polarity tidyup ASoC: sun4i-i2s: Add mclk enable regmap field ASoC: sun4i-i2s: Add regmap field to set DAI format ASoC: sun4i-i2s: Check for slave select bit ASoC: sun4i-i2s: Update global enable with bitmask ASoC: sun4i-i2s: Add support for H3
.../devicetree/bindings/sound/sun4i-i2s.txt | 2 + sound/soc/sunxi/sun4i-i2s.c | 406 ++++++++++++++++++--- 2 files changed, 357 insertions(+), 51 deletions(-)