diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch b/target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch deleted file mode 100644 index 1c60a018bf..0000000000 --- a/target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch +++ /dev/null @@ -1,63 +0,0 @@ -From 1c6fdc37e81dcd4be3590c7130320f23ad0761df Mon Sep 17 00:00:00 2001 -From: Matthias Reichl <hias@horus.com> -Date: Sun, 11 Oct 2015 15:35:20 +0200 -Subject: [PATCH] bcm2835-i2s: Register PCM device - -Code ported from bcm2708-i2s driver in Raspberry Pi tree. - -RPi commit ba46b4935a23aa2caac1855ead52a035d4776680 ("ASoC: Add -support for BCM2708") - -This driver adds support for digital audio (I2S) -for the BCM2708 SoC that is used by the -Raspberry Pi. External audio codecs can be -connected to the Raspberry Pi via P5 header. - -It relies on cyclic DMA engine support for BCM2708. - -Signed-off-by: Florian Meier <florian.meier@koalo.de> - -Signed-off-by: Matthias Reichl <hias@horus.com> ---- - sound/soc/bcm/bcm2835-i2s.c | 23 ++++++++++++++++++++++- - 1 file changed, 22 insertions(+), 1 deletion(-) - ---- a/sound/soc/bcm/bcm2835-i2s.c -+++ b/sound/soc/bcm/bcm2835-i2s.c -@@ -799,6 +799,25 @@ static const struct snd_soc_component_dr - .name = "bcm2835-i2s-comp", - }; - -+static const struct snd_pcm_hardware bcm2835_pcm_hardware = { -+ .info = SNDRV_PCM_INFO_INTERLEAVED | -+ SNDRV_PCM_INFO_JOINT_DUPLEX, -+ .formats = SNDRV_PCM_FMTBIT_S16_LE | -+ SNDRV_PCM_FMTBIT_S24_LE | -+ SNDRV_PCM_FMTBIT_S32_LE, -+ .period_bytes_min = 32, -+ .period_bytes_max = 64 * PAGE_SIZE, -+ .periods_min = 2, -+ .periods_max = 255, -+ .buffer_bytes_max = 128 * PAGE_SIZE, -+}; -+ -+static const struct snd_dmaengine_pcm_config bcm2835_dmaengine_pcm_config = { -+ .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, -+ .pcm_hardware = &bcm2835_pcm_hardware, -+ .prealloc_buffer_size = 256 * PAGE_SIZE, -+}; -+ - static int bcm2835_i2s_probe(struct platform_device *pdev) - { - struct bcm2835_i2s_dev *dev; -@@ -870,7 +889,9 @@ static int bcm2835_i2s_probe(struct plat - return ret; - } - -- ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); -+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, -+ &bcm2835_dmaengine_pcm_config, -+ SND_DMAENGINE_PCM_FLAG_COMPAT); - if (ret) { - dev_err(&pdev->dev, "Could not register PCM: %d\n", ret); - return ret; |