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f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
102 lines
3.0 KiB
Diff
102 lines
3.0 KiB
Diff
From 8a9eb6f0ef9e548aaa5ac60e95e4c0c9c99adcab Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
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Date: Sat, 3 Oct 2015 22:22:55 +0200
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Subject: [PATCH 016/454] dmaengine: bcm2835: Load driver early and support
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legacy API
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Load driver early since at least bcm2708_fb doesn't support deferred
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probing and even if it did, we don't want the video driver deferred.
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Support the legacy DMA API which is needed by bcm2708_fb.
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Don't mask out channel 2.
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Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
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---
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drivers/dma/Kconfig | 2 +-
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drivers/dma/bcm2835-dma.c | 26 +++++++++++++++++++++++++-
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2 files changed, 26 insertions(+), 2 deletions(-)
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--- a/drivers/dma/Kconfig
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+++ b/drivers/dma/Kconfig
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@@ -131,7 +131,7 @@ config COH901318
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config DMA_BCM2835
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tristate "BCM2835 DMA engine support"
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- depends on ARCH_BCM2835
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+ depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
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select DMA_ENGINE
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select DMA_VIRTUAL_CHANNELS
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--- a/drivers/dma/bcm2835-dma.c
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+++ b/drivers/dma/bcm2835-dma.c
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@@ -37,6 +37,7 @@
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/module.h>
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+#include <linux/platform_data/dma-bcm2708.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/io.h>
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@@ -48,6 +49,7 @@
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#define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14
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#define BCM2835_DMA_CHAN_NAME_SIZE 8
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+#define BCM2835_DMA_BULK_MASK BIT(0)
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struct bcm2835_dmadev {
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struct dma_device ddev;
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@@ -925,6 +927,9 @@ static int bcm2835_dma_probe(struct plat
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base = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(base))
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return PTR_ERR(base);
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+ rc = bcm_dmaman_probe(pdev, base, BCM2835_DMA_BULK_MASK);
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+ if (rc)
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+ dev_err(&pdev->dev, "Failed to initialize the legacy API\n");
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od->base = base;
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@@ -962,6 +967,9 @@ static int bcm2835_dma_probe(struct plat
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goto err_no_dma;
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}
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+ /* Channel 0 is used by the legacy API */
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+ chans_available &= ~BCM2835_DMA_BULK_MASK;
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+
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/* get irqs for each channel that we support */
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for (i = 0; i <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; i++) {
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/* skip masked out channels */
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@@ -1036,6 +1044,7 @@ static int bcm2835_dma_remove(struct pla
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{
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struct bcm2835_dmadev *od = platform_get_drvdata(pdev);
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+ bcm_dmaman_remove(pdev);
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dma_async_device_unregister(&od->ddev);
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bcm2835_dma_free(od);
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@@ -1051,7 +1060,22 @@ static struct platform_driver bcm2835_dm
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},
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};
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-module_platform_driver(bcm2835_dma_driver);
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+static int bcm2835_dma_init(void)
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+{
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+ return platform_driver_register(&bcm2835_dma_driver);
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+}
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+
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+static void bcm2835_dma_exit(void)
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+{
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+ platform_driver_unregister(&bcm2835_dma_driver);
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+}
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+
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+/*
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+ * Load after serial driver (arch_initcall) so we see the messages if it fails,
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+ * but before drivers (module_init) that need a DMA channel.
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+ */
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+subsys_initcall(bcm2835_dma_init);
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+module_exit(bcm2835_dma_exit);
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MODULE_ALIAS("platform:bcm2835-dma");
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MODULE_DESCRIPTION("BCM2835 DMA engine driver");
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