From 4224b52c3acc7203e7c2535d6806f30432dae5e3 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 17 Jan 2016 10:42:23 +0000 Subject: brcm2708: add linux 4.4 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - random-bcm2708 and spi-bcm2708 have been removed. - sound-soc-bcm2708-i2s has been upstreamed as sound-soc-bcm2835-i2s. Let's keep linux 4.1 for a while, since linux 4.4 appears to have some issues with multicast traffic on RPi ethernet: https://gist.github.com/Noltari/5b1cfdecce5ed4bc08fd Signed-off-by: Álvaro Fernández Rojas SVN-Revision: 48266 --- .../0018-bcm2835-i2s-Register-PCM-device.patch | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch (limited to 'target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch') 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 new file mode 100644 index 0000000000..eeb7d61b5d --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0018-bcm2835-i2s-Register-PCM-device.patch @@ -0,0 +1,63 @@ +From b58d4ef09eca4674d1530f0c8e1ca074b269ebea Mon Sep 17 00:00:00 2001 +From: Matthias Reichl +Date: Sun, 11 Oct 2015 15:35:20 +0200 +Subject: [PATCH 018/127] 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 + +Signed-off-by: Matthias Reichl +--- + 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; -- cgit v1.2.3