Lines Matching +full:4 +full:- +full:ch

1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/dma-mapping.h>
45 #define DMA_PCTRL_4W_BURST 0x2 /* 4 word burst length */
47 #define DMA_TX_BURST_SHIFT 4 /* tx burst shift */
61 ltq_dma_enable_irq(struct ltq_dma_channel *ch)
66 ltq_dma_w32(ch->nr, LTQ_DMA_CS);
67 ltq_dma_w32_mask(0, 1 << ch->nr, LTQ_DMA_IRNEN);
73 ltq_dma_disable_irq(struct ltq_dma_channel *ch)
78 ltq_dma_w32(ch->nr, LTQ_DMA_CS);
79 ltq_dma_w32_mask(1 << ch->nr, 0, LTQ_DMA_IRNEN);
85 ltq_dma_ack_irq(struct ltq_dma_channel *ch)
90 ltq_dma_w32(ch->nr, LTQ_DMA_CS);
97 ltq_dma_open(struct ltq_dma_channel *ch)
102 ltq_dma_w32(ch->nr, LTQ_DMA_CS);
109 ltq_dma_close(struct ltq_dma_channel *ch)
114 ltq_dma_w32(ch->nr, LTQ_DMA_CS);
116 ltq_dma_w32_mask(1 << ch->nr, 0, LTQ_DMA_IRNEN);
122 ltq_dma_alloc(struct ltq_dma_channel *ch)
126 ch->desc = 0;
127 ch->desc_base = dma_alloc_coherent(ch->dev,
129 &ch->phys, GFP_ATOMIC);
132 ltq_dma_w32(ch->nr, LTQ_DMA_CS);
133 ltq_dma_w32(ch->phys, LTQ_DMA_CDBA);
144 ltq_dma_alloc_tx(struct ltq_dma_channel *ch)
148 ltq_dma_alloc(ch);
152 ltq_dma_w32_mask(0, 1 << ch->nr, LTQ_DMA_IRNEN);
159 ltq_dma_alloc_rx(struct ltq_dma_channel *ch)
163 ltq_dma_alloc(ch);
167 ltq_dma_w32_mask(0, 1 << ch->nr, LTQ_DMA_IRNEN);
174 ltq_dma_free(struct ltq_dma_channel *ch)
176 if (!ch->desc_base)
178 ltq_dma_close(ch);
179 dma_free_coherent(ch->dev, LTQ_DESC_NUM * LTQ_DESC_SIZE,
180 ch->desc_base, ch->phys);
207 case 4:
224 case 4:
250 clk = clk_get(&pdev->dev, NULL);
272 dev_info(&pdev->dev,
273 "Init done - hw rev: %X, ports: %d, channels: %d\n",
280 { .compatible = "lantiq,dma-xway" },
287 .name = "dma-xway",