diff options
| author | Lubomir Rintel <lkundrak@v3.sk> | 2020-05-11 23:01:34 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-05-19 20:52:49 +0100 |
| commit | a97e384ba78fd8bf7ba8c32718424d8a7536416e (patch) | |
| tree | 17a048ef526c1c4524b5393716924a784beb4103 /sound/soc/pxa/Kconfig | |
| parent | ce5955866d971864a6cd8d012411ec96b048a696 (diff) | |
| download | linux-a97e384ba78fd8bf7ba8c32718424d8a7536416e.tar.gz | |
ASoC: mmp-sspa: Add Device Tree support
This makes it possible to select CONFIG_SND_MMP_SOC_SSPA directly, as
opposed to via CONFIG_SND_MMP_SOC, and for the driver to bind to a device
tree node. That makes the driver useful on Device Tree based systems,
with audio-graph-card or simple-card.
The aforementioned card drivers control the master clock themselves and
don't call the set_dai_sysclk() or set_dai_pll(), thus the respective
handlers don't serve any purpose anymore. Instead, they return early and
the hw_params() handler sets the appropriate bitclk itself.
The register range is split into two -- for the RX block and for the TX
block. On a MMP2 there are two pairs of them; the first one has the
clock controller in the middle, while the second just has a hole:
0xd42a0c00 - 0xd42a0c30 RX1
0xd42a0c30 - 0xd42a0c40 Clocks
0xd42a0c80 - 0xd42a0cb0 TX1
0xd42a0d00 - 0xd42a0d30 RX2
0xd42a0d80 - 0xd42a0cb0 TX2
For this reason, mmp_sspa_write_reg() and mmp_sspa_read_reg() are
replaced with direct calls to I/O routines.
Tested on a MMP2-based OLPC XO-1.75 laptop with rt5631 coded, mmp_tdma DMA
engine and MMP2 clock controller glued together with audio-graph-card.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20200511210134.1224532-12-lkundrak@v3.sk
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/pxa/Kconfig')
| -rw-r--r-- | sound/soc/pxa/Kconfig | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig index d4c0f580a565..7ad2fd7e653b 100644 --- a/sound/soc/pxa/Kconfig +++ b/sound/soc/pxa/Kconfig @@ -9,14 +9,8 @@ config SND_PXA2XX_SOC to select the audio interfaces to support below. config SND_MMP_SOC - bool "Soc Audio for Marvell MMP chips" - depends on ARCH_MMP + bool select MMP_SRAM - select SND_SOC_GENERIC_DMAENGINE_PCM - select SND_ARM - help - Say Y if you want to add support for codecs attached to - the MMP SSPA interface. config SND_PXA2XX_AC97 tristate @@ -39,7 +33,13 @@ config SND_PXA_SOC_SSP select SND_PXA2XX_LIB config SND_MMP_SOC_SSPA - tristate + tristate "SoC Audio via MMP SSPA ports" + depends on ARCH_MMP + select SND_SOC_GENERIC_DMAENGINE_PCM + select SND_ARM + help + Say Y if you want to add support for codecs attached to + the MMP SSPA interface. config SND_PXA2XX_SOC_CORGI tristate "SoC Audio support for Sharp Zaurus SL-C7x0" @@ -232,8 +232,8 @@ config SND_PXA2XX_SOC_IMOTE2 config SND_MMP_SOC_BROWNSTONE tristate "SoC Audio support for Marvell Brownstone" - depends on SND_MMP_SOC && MACH_BROWNSTONE && I2C - select SND_MMP_SOC_SSPA + depends on SND_MMP_SOC_SSPA && MACH_BROWNSTONE && I2C + select SND_MMP_SOC select MFD_WM8994 select SND_SOC_WM8994 help |