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Add RPI4 beta support

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Ycarus (Yannick Chabanois) 2019-06-24 19:52:48 +02:00
parent abf18246f5
commit 5f08b288eb
155 changed files with 29237 additions and 0 deletions
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40
root/target/linux/brcm2708/patches-4.19/0561-spi-bcm2835-enable-shared-interrupt-support.patch Normal file
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@ -0,0 +1,40 @@
From e33c10004ef2e1ed0e637de603ab3941e758f8af Mon Sep 17 00:00:00 2001
From: Martin Sperl <kernel@martin.sperl.org>
Date: Mon, 13 May 2019 11:05:27 +0000
Subject: [PATCH 561/678] spi: bcm2835: enable shared interrupt support
Add shared interrupt support for this driver.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
---
drivers/spi/spi-bcm2835.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index 5816bae19d58..885740ccedfa 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -150,6 +150,10 @@ static irqreturn_t bcm2835_spi_interrupt(int irq, void *dev_id)
struct spi_master *master = dev_id;
struct bcm2835_spi *bs = spi_master_get_devdata(master);
+ /* check if we got interrupt enabled */
+ if (!(bcm2835_rd(bs, BCM2835_SPI_CS) & BCM2835_SPI_CS_INTR))
+ return IRQ_NONE;
+
/* Read as many bytes as possible from FIFO */
bcm2835_rd_fifo(bs);
/* Write as many bytes as possible to FIFO */
@@ -755,7 +759,8 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
bcm2835_wr(bs, BCM2835_SPI_CS,
BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX);
- err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt, 0,
+ err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt,
+ IRQF_SHARED,
dev_name(&pdev->dev), master);
if (err) {
dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
--
2.19.1