Lines Matching refs:dmamux
42 struct lpc18xx_dmamux_data *dmamux = dev_get_drvdata(dev);
46 spin_lock_irqsave(&dmamux->lock, flags);
48 spin_unlock_irqrestore(&dmamux->lock, flags);
55 struct lpc18xx_dmamux_data *dmamux = platform_get_drvdata(pdev);
65 if (mux >= dmamux->dma_master_requests) {
84 spin_lock_irqsave(&dmamux->lock, flags);
85 if (dmamux->muxes[mux].busy) {
86 spin_unlock_irqrestore(&dmamux->lock, flags);
88 mux, mux, dmamux->muxes[mux].value);
93 dmamux->muxes[mux].busy = true;
94 dmamux->muxes[mux].value = dma_spec->args[1];
96 regmap_update_bits(dmamux->reg, LPC18XX_CREG_DMAMUX,
98 LPC18XX_DMAMUX_VAL(dmamux->muxes[mux].value, mux));
99 spin_unlock_irqrestore(&dmamux->lock, flags);
104 dev_dbg(&pdev->dev, "mapping dmamux %u.%u to dma request %u\n", mux,
105 dmamux->muxes[mux].value, mux);
107 return &dmamux->muxes[mux];
113 struct lpc18xx_dmamux_data *dmamux;
116 dmamux = devm_kzalloc(&pdev->dev, sizeof(*dmamux), GFP_KERNEL);
117 if (!dmamux)
120 dmamux->reg = syscon_regmap_lookup_by_compatible("nxp,lpc1850-creg");
121 if (IS_ERR(dmamux->reg)) {
123 return PTR_ERR(dmamux->reg);
127 &dmamux->dma_mux_requests);
140 &dmamux->dma_master_requests);
147 dmamux->muxes = devm_kcalloc(&pdev->dev, dmamux->dma_master_requests,
150 if (!dmamux->muxes)
153 spin_lock_init(&dmamux->lock);
154 platform_set_drvdata(pdev, dmamux);
155 dmamux->dmarouter.dev = &pdev->dev;
156 dmamux->dmarouter.route_free = lpc18xx_dmamux_free;
159 &dmamux->dmarouter);
163 { .compatible = "nxp,lpc1850-dmamux" },
170 .name = "lpc18xx-dmamux",