diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0400-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0400-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0400-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch b/target/linux/brcm2708/patches-4.4/0400-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch deleted file mode 100644 index 577e9379c8..0000000000 --- a/target/linux/brcm2708/patches-4.4/0400-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch +++ /dev/null @@ -1,89 +0,0 @@ -From 2de569f13c66b1cfd467f52cce1f01b78422a20b 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 -(but only using the dedicated dma channel 0). - -Signed-off-by: Noralf Trønnes <noralf@tronnes.org> -Signed-off-by: Martin Sperl <kernel@martin.sperl.org> ---- - drivers/dma/Kconfig | 2 +- - drivers/dma/bcm2835-dma.c | 27 ++++++++++++++++++++++++++- - 2 files changed, 27 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> -@@ -1021,6 +1022,14 @@ static int bcm2835_dma_probe(struct plat - - dev_dbg(&pdev->dev, "Load BCM2835 DMA engine driver\n"); - -+ /* load the legacy api if bit 0 in the mask is cleared */ -+ if ((chans_available & BIT(0)) == 0) { -+ rc = bcm_dmaman_probe(pdev, base, BIT(0)); -+ if (rc) -+ dev_err(&pdev->dev, -+ "Failed to initialize the legacy API\n"); -+ } -+ - return 0; - - err_no_dma: -@@ -1032,6 +1041,7 @@ 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); - -@@ -1047,7 +1057,22 @@ 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"); |