The patch

ASoC: rt5514-spi: check irq status to schedule data copy

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From 659178f5d1bb5164480c35e5a749c4fe1dde5867 Mon Sep 17 00:00:00 2001

From: Hsin-Yu Chao hychao@chromium.org Date: Wed, 13 Sep 2017 17:54:28 +0800 Subject: [PATCH] ASoC: rt5514-spi: check irq status to schedule data copy

For wake on voice use case, we need to copy data from DSP buffer to PCM stream when system wakes up by voice. However the edge triggered IRQ could be missed when system wakes up, in that case the irq function will not be called. Fix that by checking the irq status bit and schedule data copy accordingly.

Signed-off-by: Hsin-Yu Chao hychao@chromium.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/rt5514-spi.c | 17 +++++++++++++++-- sound/soc/codecs/rt5514-spi.h | 3 +++ 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c index ed6e5373916c..12f2ecf3a4fe 100644 --- a/sound/soc/codecs/rt5514-spi.c +++ b/sound/soc/codecs/rt5514-spi.c @@ -145,9 +145,8 @@ static void rt5514_spi_copy_work(struct work_struct *work) mutex_unlock(&rt5514_dsp->dma_lock); }

-static irqreturn_t rt5514_spi_irq(int irq, void *data) +static void rt5514_schedule_copy(struct rt5514_dsp *rt5514_dsp) { - struct rt5514_dsp *rt5514_dsp = data; u8 buf[8];

rt5514_dsp->get_size = 0; @@ -180,6 +179,13 @@ static irqreturn_t rt5514_spi_irq(int irq, void *data) if (rt5514_dsp->buf_base && rt5514_dsp->buf_limit && rt5514_dsp->buf_rp && rt5514_dsp->buf_size) schedule_delayed_work(&rt5514_dsp->copy_work, 0); +} + +static irqreturn_t rt5514_spi_irq(int irq, void *data) +{ + struct rt5514_dsp *rt5514_dsp = data; + + rt5514_schedule_copy(rt5514_dsp);

return IRQ_HANDLED; } @@ -199,12 +205,19 @@ static int rt5514_spi_hw_params(struct snd_pcm_substream *substream, struct rt5514_dsp *rt5514_dsp = snd_soc_platform_get_drvdata(rtd->platform); int ret; + u8 buf[8];

mutex_lock(&rt5514_dsp->dma_lock); ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, params_buffer_bytes(hw_params)); rt5514_dsp->substream = substream; rt5514_dsp->dma_offset = 0; + + /* Read IRQ status and schedule copy accordingly. */ + rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, sizeof(buf)); + if (buf[0] & RT5514_IRQ_STATUS_BIT) + rt5514_schedule_copy(rt5514_dsp); + mutex_unlock(&rt5514_dsp->dma_lock);

return ret; diff --git a/sound/soc/codecs/rt5514-spi.h b/sound/soc/codecs/rt5514-spi.h index a6434ee6ff03..c1a36647c119 100644 --- a/sound/soc/codecs/rt5514-spi.h +++ b/sound/soc/codecs/rt5514-spi.h @@ -20,6 +20,9 @@ #define RT5514_BUFFER_VOICE_BASE 0x18000200 #define RT5514_BUFFER_VOICE_LIMIT 0x18000204 #define RT5514_BUFFER_VOICE_WP 0x1800020c +#define RT5514_IRQ_CTRL 0x18002094 + +#define RT5514_IRQ_STATUS_BIT (0x1 << 5)

/* SPI Command */ enum {