target/linux/ramips/patches-6.1/800-dmaengine-mediatek-add-HSDMA-support-for-mt7621.patch

   1 From d94fc5ce1dc395747c3934ecffcdec0396583755 Mon Sep 17 00:00:00 2001
   2 From: Nick Hainke <vincent@systemli.org>
   3 Date: Fri, 26 May 2023 19:46:33 +0200
   4 Subject: [PATCH] dmaengine: mediatek: add HSDMA support for mt7621
   5
   6 Commit 87dd67f496f7 ("staging: mt7621-dma: remove driver from tree")
   7 removed the mt7621-dma driver. Move the driver from staging to the
   8 folder "drivers/dma/mediatek" containing already other mediatek dma
   9 driver implementations and maintain it downstream in OpenWrt.
  10
  11 This patch will not be sent to upstream linux. It is just a workaround.
  12
  13 Signed-off-by: Nick Hainke <vincent@systemli.org>
  14 ---
  15  drivers/dma/mediatek/Kconfig  | 6 ++++++
  16  drivers/dma/mediatek/Makefile | 1 +
  17  2 files changed, 7 insertions(+)
  18
  19 diff --git a/drivers/dma/mediatek/Kconfig b/drivers/dma/mediatek/Kconfig
  20 index 7a46a5455957..1a24d73ce87f 100644
  21 --- a/drivers/dma/mediatek/Kconfig
  22 +++ b/drivers/dma/mediatek/Kconfig
  23 @@ -36,3 +36,9 @@ config MTK_UART_APDMA
  24           When SERIAL_8250_MT6577 is enabled, and if you want to use DMA,
  25           you can enable the config. The DMA engine can only be used
  26           with MediaTek SoCs.
  27 +
  28 +config MTK_HSDMA
  29 +       tristate "MTK HSDMA support"
  30 +       depends on RALINK && SOC_MT7621
  31 +       select DMA_ENGINE
  32 +       select DMA_VIRTUAL_CHANNELS
  33 diff --git a/drivers/dma/mediatek/Makefile b/drivers/dma/mediatek/Makefile
  34 index 5ba39a5edc13..784af039b7c0 100644
  35 --- a/drivers/dma/mediatek/Makefile
  36 +++ b/drivers/dma/mediatek/Makefile
  37 @@ -2,3 +2,4 @@
  38  obj-$(CONFIG_MTK_UART_APDMA) += mtk-uart-apdma.o
  39  obj-$(CONFIG_MTK_HSDMA) += mtk-hsdma.o
  40  obj-$(CONFIG_MTK_CQDMA) += mtk-cqdma.o
  41 +obj-$(CONFIG_MTK_HSDMA) += hsdma-mt7621.o
  42 --
  43 2.40.1
  44