From 011aaeec01e870c9b1248194cd4522d51174d1de 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 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48266 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- ...-get-base-address-for-DMA-from-devicetree.patch | 65 ++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.4/0014-bcm2835-i2s-get-base-address-for-DMA-from-devicetree.patch (limited to 'target/linux/brcm2708/patches-4.4/0014-bcm2835-i2s-get-base-address-for-DMA-from-devicetree.patch') diff --git a/target/linux/brcm2708/patches-4.4/0014-bcm2835-i2s-get-base-address-for-DMA-from-devicetree.patch b/target/linux/brcm2708/patches-4.4/0014-bcm2835-i2s-get-base-address-for-DMA-from-devicetree.patch new file mode 100644 index 0000000000..0c36bda8bf --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0014-bcm2835-i2s-get-base-address-for-DMA-from-devicetree.patch @@ -0,0 +1,65 @@ +From c8225021ad8a8e8d2b4560bed644c5552f9f6684 Mon Sep 17 00:00:00 2001 +From: Matthias Reichl +Date: Sun, 11 Oct 2015 16:44:05 +0200 +Subject: [PATCH 014/127] bcm2835-i2s: get base address for DMA from devicetree + +Code copied from spi-bcm2835. Get physical address from devicetree +instead of using hardcoded constant. + +Signed-off-by: Matthias Reichl +--- + sound/soc/bcm/bcm2835-i2s.c | 20 ++++++++++++-------- + 1 file changed, 12 insertions(+), 8 deletions(-) + +--- a/sound/soc/bcm/bcm2835-i2s.c ++++ b/sound/soc/bcm/bcm2835-i2s.c +@@ -38,6 +38,7 @@ + #include + #include + #include ++#include + + #include + #include +@@ -158,10 +159,6 @@ static const unsigned int bcm2835_clk_fr + #define BCM2835_I2S_INT_RXR BIT(1) + #define BCM2835_I2S_INT_TXW BIT(0) + +-/* I2S DMA interface */ +-/* FIXME: Needs IOMMU support */ +-#define BCM2835_VCMMU_SHIFT (0x7E000000 - 0x20000000) +- + /* General device struct */ + struct bcm2835_i2s_dev { + struct device *dev; +@@ -791,6 +788,15 @@ static int bcm2835_i2s_probe(struct plat + int ret; + struct regmap *regmap[2]; + struct resource *mem[2]; ++ const __be32 *addr; ++ dma_addr_t dma_reg_base; ++ ++ addr = of_get_address(pdev->dev.of_node, 0, NULL, NULL); ++ if (!addr) { ++ dev_err(&pdev->dev, "could not get DMA-register address\n"); ++ return -ENODEV; ++ } ++ dma_reg_base = be32_to_cpup(addr); + + /* Request both ioareas */ + for (i = 0; i <= 1; i++) { +@@ -817,12 +823,10 @@ static int bcm2835_i2s_probe(struct plat + + /* Set the DMA address */ + dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr = +- (dma_addr_t)mem[0]->start + BCM2835_I2S_FIFO_A_REG +- + BCM2835_VCMMU_SHIFT; ++ dma_reg_base + BCM2835_I2S_FIFO_A_REG; + + dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr = +- (dma_addr_t)mem[0]->start + BCM2835_I2S_FIFO_A_REG +- + BCM2835_VCMMU_SHIFT; ++ dma_reg_base + BCM2835_I2S_FIFO_A_REG; + + /* Set the bus width */ + dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr_width = -- cgit v1.2.3