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https://github.com/Ysurac/openmptcprouter.git
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53 lines
2 KiB
Diff
53 lines
2 KiB
Diff
From b0465659003ba35bb7d6c9a4b670c43ac9632333 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Thu, 11 May 2023 16:08:15 +0100
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Subject: [PATCH 0465/1002] drm/vc4: Use phys addresses for slave DMA config
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Slave addresses for DMA are meant to be supplied as physical addresses
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(contrary to what struct snd_dmaengine_dai_dma_data does).
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 13 ++++---------
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1 file changed, 4 insertions(+), 9 deletions(-)
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diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
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index b2c1e637d27a..f1d9c27e8794 100644
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -2689,7 +2689,7 @@ static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_hdmi)
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struct snd_soc_card *card = &vc4_hdmi->audio.card;
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struct device *dev = &vc4_hdmi->pdev->dev;
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struct platform_device *codec_pdev;
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- const __be32 *addr;
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+ struct resource *iomem;
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int index, len;
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int ret;
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@@ -2725,20 +2725,15 @@ static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_hdmi)
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}
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/*
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- * Get the physical address of VC4_HD_MAI_DATA. We need to retrieve
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- * the bus address specified in the DT, because the physical address
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- * (the one returned by platform_get_resource()) is not appropriate
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- * for DMA transfers.
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- * This VC/MMU should probably be exposed to avoid this kind of hacks.
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+ * Get the physical address of VC4_HD_MAI_DATA.
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*/
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index = of_property_match_string(dev->of_node, "reg-names", "hd");
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/* Before BCM2711, we don't have a named register range */
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if (index < 0)
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index = 1;
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+ iomem = platform_get_resource(vc4_hdmi->pdev, IORESOURCE_MEM, index);
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- addr = of_get_address(dev->of_node, index, NULL, NULL);
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-
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- vc4_hdmi->audio.dma_data.addr = be32_to_cpup(addr) + mai_data->offset;
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+ vc4_hdmi->audio.dma_data.addr = iomem->start + mai_data->offset;
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vc4_hdmi->audio.dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
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vc4_hdmi->audio.dma_data.maxburst = 2;
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--
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2.44.0
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