diff options
Diffstat (limited to 'meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1103-ASoC-AMD-handle-ACP3x-i2s-watermark-interrupt.patch')
| -rw-r--r-- | meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1103-ASoC-AMD-handle-ACP3x-i2s-watermark-interrupt.patch | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1103-ASoC-AMD-handle-ACP3x-i2s-watermark-interrupt.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1103-ASoC-AMD-handle-ACP3x-i2s-watermark-interrupt.patch deleted file mode 100644 index 29cf192e..00000000 --- a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1103-ASoC-AMD-handle-ACP3x-i2s-watermark-interrupt.patch +++ /dev/null @@ -1,99 +0,0 @@ -From 0550f8597afc1ea3d6f3aec554dac24cff85a558 Mon Sep 17 00:00:00 2001 -From: Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu@amd.com> -Date: Thu, 30 Mar 2017 13:28:45 +0530 -Subject: [PATCH 1103/4131] ASoC: AMD: handle ACP3x i2s watermark interrupt - -whenever audio data equal to I2S fifo watermark level is -produced/consumed, interrupt is generated. Amount of data is equal to -half of ALSA ring buffer size. Acknowledge the interrupt. - -Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> -Signed-off-by: Alex Deucher <alexander.deucher@amd.com> ---- - sound/soc/amd/raven/acp3x-pcm-dma.c | 49 +++++++++++++++++++++++++++++++++++++ - 1 file changed, 49 insertions(+) - -diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c -index 3fd9f86..0ce04f0 100644 ---- a/sound/soc/amd/raven/acp3x-pcm-dma.c -+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c -@@ -25,6 +25,7 @@ - #include "acp3x.h" - - struct i2s_dev_data { -+ unsigned int i2s_irq; - void __iomem *acp3x_base; - struct snd_pcm_substream *play_stream; - struct snd_pcm_substream *capture_stream; -@@ -135,6 +136,38 @@ static int acp3x_deinit(void __iomem *acp3x_base) - return 0; - } - -+static irqreturn_t i2s_irq_handler(int irq, void *dev_id) -+{ -+ u16 play_flag, cap_flag; -+ u32 val; -+ struct i2s_dev_data *rv_i2s_data = dev_id; -+ -+ if (rv_i2s_data == NULL) -+ return IRQ_NONE; -+ -+ play_flag = cap_flag = 0; -+ -+ val = rv_readl(rv_i2s_data->acp3x_base + mmACP_EXTERNAL_INTR_STAT); -+ if ((val & BIT(BT_TX_THRESHOLD)) && (rv_i2s_data->play_stream)) { -+ rv_writel(BIT(BT_TX_THRESHOLD), rv_i2s_data->acp3x_base + -+ mmACP_EXTERNAL_INTR_STAT); -+ snd_pcm_period_elapsed(rv_i2s_data->play_stream); -+ play_flag = 1; -+ } -+ -+ if ((val & BIT(BT_RX_THRESHOLD)) && rv_i2s_data->capture_stream) { -+ rv_writel(BIT(BT_RX_THRESHOLD), rv_i2s_data->acp3x_base + -+ mmACP_EXTERNAL_INTR_STAT); -+ snd_pcm_period_elapsed(rv_i2s_data->capture_stream); -+ cap_flag = 1; -+ } -+ -+ if (play_flag | cap_flag) -+ return IRQ_HANDLED; -+ else -+ return IRQ_NONE; -+} -+ - static struct snd_pcm_ops acp3x_dma_ops = { - .open = NULL, - .close = NULL, -@@ -211,6 +244,13 @@ static int acp3x_audio_probe(struct platform_device *pdev) - adata->acp3x_base = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); - -+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); -+ if (!res) { -+ dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n"); -+ return -ENODEV; -+ } -+ -+ adata->i2s_irq = res->start; - adata->play_stream = NULL; - adata->capture_stream = NULL; - -@@ -234,6 +274,15 @@ static int acp3x_audio_probe(struct platform_device *pdev) - goto dev_err; - } - -+ status = devm_request_irq(&pdev->dev, adata->i2s_irq, i2s_irq_handler, -+ irqflags, "ACP3x_I2S_IRQ", adata); -+ if (status) { -+ dev_err(&pdev->dev, "ACP3x I2S IRQ request failed\n"); -+ snd_soc_unregister_platform(&pdev->dev); -+ snd_soc_unregister_component(&pdev->dev); -+ goto dev_err; -+ } -+ - return 0; - dev_err: - status = acp3x_deinit(adata->acp3x_base); --- -2.7.4 - |