diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0019-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0019-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0019-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch b/target/linux/brcm2708/patches-4.9/950-0019-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch deleted file mode 100644 index c402fe283b..0000000000 --- a/target/linux/brcm2708/patches-4.9/950-0019-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch +++ /dev/null @@ -1,100 +0,0 @@ -From e4f0f7daebca7005c67bf7ae3f6f59df587e91d5 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org> -Date: Sat, 3 Oct 2015 22:22:55 +0200 -Subject: [PATCH] dmaengine: bcm2835: Load driver early and support legacy API -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Load driver early since at least bcm2708_fb doesn't support deferred -probing and even if it did, we don't want the video driver deferred. -Support the legacy DMA API which is needed by bcm2708_fb. -Don't mask out channel 2. - -Signed-off-by: Noralf Trønnes <noralf@tronnes.org> ---- - drivers/dma/Kconfig | 2 +- - drivers/dma/bcm2835-dma.c | 26 +++++++++++++++++++++++++- - 2 files changed, 26 insertions(+), 2 deletions(-) - ---- a/drivers/dma/Kconfig -+++ b/drivers/dma/Kconfig -@@ -108,7 +108,7 @@ config COH901318 - - config DMA_BCM2835 - tristate "BCM2835 DMA engine support" -- depends on ARCH_BCM2835 -+ depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709 - select DMA_ENGINE - select DMA_VIRTUAL_CHANNELS - ---- a/drivers/dma/bcm2835-dma.c -+++ b/drivers/dma/bcm2835-dma.c -@@ -37,6 +37,7 @@ - #include <linux/interrupt.h> - #include <linux/list.h> - #include <linux/module.h> -+#include <linux/platform_data/dma-bcm2708.h> - #include <linux/platform_device.h> - #include <linux/slab.h> - #include <linux/io.h> -@@ -48,6 +49,7 @@ - - #define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14 - #define BCM2835_DMA_CHAN_NAME_SIZE 8 -+#define BCM2835_DMA_BULK_MASK BIT(0) - - struct bcm2835_dmadev { - struct dma_device ddev; -@@ -925,6 +927,9 @@ static int bcm2835_dma_probe(struct plat - base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); -+ rc = bcm_dmaman_probe(pdev, base, BCM2835_DMA_BULK_MASK); -+ if (rc) -+ dev_err(&pdev->dev, "Failed to initialize the legacy API\n"); - - od->base = base; - -@@ -962,6 +967,9 @@ static int bcm2835_dma_probe(struct plat - goto err_no_dma; - } - -+ /* Channel 0 is used by the legacy API */ -+ chans_available &= ~BCM2835_DMA_BULK_MASK; -+ - /* get irqs for each channel that we support */ - for (i = 0; i <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; i++) { - /* skip masked out channels */ -@@ -1036,6 +1044,7 @@ static int bcm2835_dma_remove(struct pla - { - struct bcm2835_dmadev *od = platform_get_drvdata(pdev); - -+ bcm_dmaman_remove(pdev); - dma_async_device_unregister(&od->ddev); - bcm2835_dma_free(od); - -@@ -1051,7 +1060,22 @@ static struct platform_driver bcm2835_dm - }, - }; - --module_platform_driver(bcm2835_dma_driver); -+static int bcm2835_dma_init(void) -+{ -+ return platform_driver_register(&bcm2835_dma_driver); -+} -+ -+static void bcm2835_dma_exit(void) -+{ -+ platform_driver_unregister(&bcm2835_dma_driver); -+} -+ -+/* -+ * Load after serial driver (arch_initcall) so we see the messages if it fails, -+ * but before drivers (module_init) that need a DMA channel. -+ */ -+subsys_initcall(bcm2835_dma_init); -+module_exit(bcm2835_dma_exit); - - MODULE_ALIAS("platform:bcm2835-dma"); - MODULE_DESCRIPTION("BCM2835 DMA engine driver"); |