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63 lines
1.8 KiB
Diff
63 lines
1.8 KiB
Diff
From 671f34ea864ddc353f32272b3a2f7ee62d6f8548 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Thu, 1 Nov 2012 20:50:39 +0100
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Subject: [PATCH 102/113] MIPS: lantiq: fixes dma irq ack
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---
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arch/mips/lantiq/xway/dma.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/arch/mips/lantiq/xway/dma.c b/arch/mips/lantiq/xway/dma.c
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index 55d2c4f..a301b3b 100644
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--- a/arch/mips/lantiq/xway/dma.c
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+++ b/arch/mips/lantiq/xway/dma.c
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@@ -25,6 +25,7 @@
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#include <lantiq_soc.h>
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#include <xway_dma.h>
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+#define LTQ_DMA_ID 0x08
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#define LTQ_DMA_CTRL 0x10
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#define LTQ_DMA_CPOLL 0x14
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#define LTQ_DMA_CS 0x18
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@@ -89,7 +90,7 @@ ltq_dma_ack_irq(struct ltq_dma_channel *ch)
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local_irq_save(flags);
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ltq_dma_w32(ch->nr, LTQ_DMA_CS);
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- ltq_dma_w32(DMA_IRQ_ACK, LTQ_DMA_CIS);
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+ ltq_dma_w32(ltq_dma_r32(LTQ_DMA_CIS), LTQ_DMA_CIS);
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local_irq_restore(flags);
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}
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EXPORT_SYMBOL_GPL(ltq_dma_ack_irq);
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@@ -103,6 +104,7 @@ ltq_dma_open(struct ltq_dma_channel *ch)
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ltq_dma_w32(ch->nr, LTQ_DMA_CS);
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ltq_dma_w32_mask(0, DMA_CHAN_ON, LTQ_DMA_CCTRL);
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ltq_dma_enable_irq(ch);
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+ ltq_dma_ack_irq(ch);
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local_irq_restore(flag);
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}
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EXPORT_SYMBOL_GPL(ltq_dma_open);
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@@ -214,6 +216,7 @@ ltq_dma_init(struct platform_device *pdev)
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{
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struct clk *clk;
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struct resource *res;
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+ unsigned id;
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int i;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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@@ -243,6 +246,12 @@ ltq_dma_init(struct platform_device *pdev)
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ltq_dma_w32(DMA_POLL | DMA_CLK_DIV4, LTQ_DMA_CPOLL);
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ltq_dma_w32_mask(DMA_CHAN_ON, 0, LTQ_DMA_CCTRL);
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}
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+
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+ id = ltq_dma_r32(LTQ_DMA_ID);
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+ dev_info(&pdev->dev,
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+ "Init done - hw rev: %X, ports: %d, channels: %d\n",
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+ id & 0x1f, (id >> 16) & 0xf, id >> 20);
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+
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dev_info(&pdev->dev, "init done\n");
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return 0;
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}
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--
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1.7.10.4
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