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ASoC: rt5677: Allow arbitrary block read/write via SPI

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Added rt5677_spi_read() and refactored rt5677_spi_write() so that
an arbitrary block in the DSP address space can be read/written
via SPI. For example, this allows us to load an ELF DSP firmware
with sparse sections, and stream audio samples from DSP ring buffer.

Signed-off-by: Ben Zhang <benzh@chromium.org>
Acked-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ben Zhang
2015-08-21 21:17:00 -07:00
committed by Mark Brown
parent f8163c8673
commit 7d4d443eb4
3 changed files with 184 additions and 73 deletions
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4
sound/soc/codecs/rt5677.c
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@@ -745,14 +745,14 @@ static int rt5677_set_dsp_vad(struct snd_soc_codec *codec, bool on)
ret = request_firmware(&rt5677->fw1, RT5677_FIRMWARE1,
codec->dev);
if (ret == 0) {
rt5677_spi_burst_write(0x50000000, rt5677->fw1);
rt5677_spi_write_firmware(0x50000000, rt5677->fw1);
release_firmware(rt5677->fw1);
}
ret = request_firmware(&rt5677->fw2, RT5677_FIRMWARE2,
codec->dev);
if (ret == 0) {
rt5677_spi_burst_write(0x60000000, rt5677->fw2);
rt5677_spi_write_firmware(0x60000000, rt5677->fw2);
release_firmware(rt5677->fw2);
}