add ax88772C AX88772C_eeprom_tools

hc

2024-05-10 61598093bbdd283a7edc367d900f223070ead8d2

 kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgv100.c
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@@ -50,10 +50,12 @@
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 gv100_disp_dmac_fini(struct nv50_disp_chan *chan)
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 {
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 	struct nvkm_device *device = chan->disp->base.engine.subdev.device;
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+	const u32 uoff = (chan->chid.ctrl - 1) * 0x1000;
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 	const u32 coff = chan->chid.ctrl * 0x04;
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 	nvkm_mask(device, 0x6104e0 + coff, 0x00000010, 0x00000000);
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 	gv100_disp_dmac_idle(chan);
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 	nvkm_mask(device, 0x6104e0 + coff, 0x00000002, 0x00000000);
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+	chan->suspend_put = nvkm_rd32(device, 0x690000 + uoff);
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 }
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 int
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@@ -71,7 +73,7 @@
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 	nvkm_wr32(device, 0x610b2c + poff, 0x00000040);
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 	nvkm_mask(device, 0x6104e0 + coff, 0x00000010, 0x00000010);
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-	nvkm_wr32(device, 0x690000 + uoff, 0x00000000);
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+	nvkm_wr32(device, 0x690000 + uoff, chan->suspend_put);
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 	nvkm_wr32(device, 0x6104e0 + coff, 0x00000013);
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 	return gv100_disp_dmac_idle(chan);
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 }