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-rw-r--r--sound/soc/at91/at91-pcm.h72
1 files changed, 0 insertions, 72 deletions
diff --git a/sound/soc/at91/at91-pcm.h b/sound/soc/at91/at91-pcm.h
deleted file mode 100644
index e5aada2cb102..000000000000
--- a/sound/soc/at91/at91-pcm.h
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1/*
2 * at91-pcm.h - ALSA PCM interface for the Atmel AT91 SoC
3 *
4 * Author: Frank Mandarino <fmandarino@endrelia.com>
5 * Endrelia Technologies Inc.
6 * Created: Mar 3, 2006
7 *
8 * Based on pxa2xx-pcm.h by:
9 *
10 * Author: Nicolas Pitre
11 * Created: Nov 30, 2004
12 * Copyright: MontaVista Software, Inc.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19#ifndef _AT91_PCM_H
20#define _AT91_PCM_H
21
22#include <mach/hardware.h>
23
24struct at91_ssc_periph {
25 void __iomem *base;
26 u32 pid;
27};
28
29/*
30 * Registers and status bits that are required by the PCM driver.
31 */
32struct at91_pdc_regs {
33 unsigned int xpr; /* PDC recv/trans pointer */
34 unsigned int xcr; /* PDC recv/trans counter */
35 unsigned int xnpr; /* PDC next recv/trans pointer */
36 unsigned int xncr; /* PDC next recv/trans counter */
37 unsigned int ptcr; /* PDC transfer control */
38};
39
40struct at91_ssc_mask {
41 u32 ssc_enable; /* SSC recv/trans enable */
42 u32 ssc_disable; /* SSC recv/trans disable */
43 u32 ssc_endx; /* SSC ENDTX or ENDRX */
44 u32 ssc_endbuf; /* SSC TXBUFE or RXBUFF */
45 u32 pdc_enable; /* PDC recv/trans enable */
46 u32 pdc_disable; /* PDC recv/trans disable */
47};
48
49/*
50 * This structure, shared between the PCM driver and the interface,
51 * contains all information required by the PCM driver to perform the
52 * PDC DMA operation. All fields except dma_intr_handler() are initialized
53 * by the interface. The dms_intr_handler() pointer is set by the PCM
54 * driver and called by the interface SSC interrupt handler if it is
55 * non-NULL.
56 */
57struct at91_pcm_dma_params {
58 char *name; /* stream identifier */
59 int pdc_xfer_size; /* PDC counter increment in bytes */
60 void __iomem *ssc_base; /* SSC base address */
61 struct at91_pdc_regs *pdc; /* PDC receive or transmit registers */
62 struct at91_ssc_mask *mask;/* SSC & PDC status bits */
63 struct snd_pcm_substream *substream;
64 void (*dma_intr_handler)(u32, struct snd_pcm_substream *);
65};
66
67extern struct snd_soc_platform at91_soc_platform;
68
69#define at91_ssc_read(a) ((unsigned long) __raw_readl(a))
70#define at91_ssc_write(a,v) __raw_writel((v),(a))
71
72#endif /* _AT91_PCM_H */