1
2
3#ifndef __SPRD_MCDT_H
4#define __SPRD_MCDT_H
5
6enum sprd_mcdt_channel_type {
7 SPRD_MCDT_DAC_CHAN,
8 SPRD_MCDT_ADC_CHAN,
9 SPRD_MCDT_UNKNOWN_CHAN,
10};
11
12enum sprd_mcdt_dma_chan {
13 SPRD_MCDT_DMA_CH0,
14 SPRD_MCDT_DMA_CH1,
15 SPRD_MCDT_DMA_CH2,
16 SPRD_MCDT_DMA_CH3,
17 SPRD_MCDT_DMA_CH4,
18};
19
20struct sprd_mcdt_chan_callback {
21 void (*notify)(void *data);
22 void *data;
23};
24
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37
38
39struct sprd_mcdt_chan {
40 struct sprd_mcdt_dev *mcdt;
41 u8 id;
42 unsigned long fifo_phys;
43 enum sprd_mcdt_channel_type type;
44 enum sprd_mcdt_dma_chan dma_chan;
45 struct sprd_mcdt_chan_callback *cb;
46 bool dma_enable;
47 bool int_enable;
48 struct list_head list;
49};
50
51#ifdef CONFIG_SND_SOC_SPRD_MCDT
52struct sprd_mcdt_chan *sprd_mcdt_request_chan(u8 channel,
53 enum sprd_mcdt_channel_type type);
54void sprd_mcdt_free_chan(struct sprd_mcdt_chan *chan);
55
56int sprd_mcdt_chan_write(struct sprd_mcdt_chan *chan, char *tx_buf, u32 size);
57int sprd_mcdt_chan_read(struct sprd_mcdt_chan *chan, char *rx_buf, u32 size);
58int sprd_mcdt_chan_int_enable(struct sprd_mcdt_chan *chan, u32 water_mark,
59 struct sprd_mcdt_chan_callback *cb);
60void sprd_mcdt_chan_int_disable(struct sprd_mcdt_chan *chan);
61
62int sprd_mcdt_chan_dma_enable(struct sprd_mcdt_chan *chan,
63 enum sprd_mcdt_dma_chan dma_chan, u32 water_mark);
64void sprd_mcdt_chan_dma_disable(struct sprd_mcdt_chan *chan);
65
66#else
67
68struct sprd_mcdt_chan *sprd_mcdt_request_chan(u8 channel,
69 enum sprd_mcdt_channel_type type)
70{
71 return NULL;
72}
73
74void sprd_mcdt_free_chan(struct sprd_mcdt_chan *chan)
75{ }
76
77int sprd_mcdt_chan_write(struct sprd_mcdt_chan *chan, char *tx_buf, u32 size)
78{
79 return -EINVAL;
80}
81
82int sprd_mcdt_chan_read(struct sprd_mcdt_chan *chan, char *rx_buf, u32 size)
83{
84 return 0;
85}
86
87int sprd_mcdt_chan_int_enable(struct sprd_mcdt_chan *chan, u32 water_mark,
88 struct sprd_mcdt_chan_callback *cb)
89{
90 return -EINVAL;
91}
92
93void sprd_mcdt_chan_int_disable(struct sprd_mcdt_chan *chan)
94{ }
95
96int sprd_mcdt_chan_dma_enable(struct sprd_mcdt_chan *chan,
97 enum sprd_mcdt_dma_chan dma_chan, u32 water_mark)
98{
99 return -EINVAL;
100}
101
102void sprd_mcdt_chan_dma_disable(struct sprd_mcdt_chan *chan)
103{ }
104
105#endif
106
107#endif
108