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1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License version 2 as
4 * published by the Free Software Foundation.
5 */
6
7#ifndef _IMX_SSI_H
8#define _IMX_SSI_H
9
10#define SSI_STX0 0x00
11#define SSI_STX1 0x04
12#define SSI_SRX0 0x08
13#define SSI_SRX1 0x0c
14
15#define SSI_SCR 0x10
16#define SSI_SCR_CLK_IST (1 << 9)
17#define SSI_SCR_CLK_IST_SHIFT 9
18#define SSI_SCR_TCH_EN (1 << 8)
19#define SSI_SCR_SYS_CLK_EN (1 << 7)
20#define SSI_SCR_I2S_MODE_NORM (0 << 5)
21#define SSI_SCR_I2S_MODE_MSTR (1 << 5)
22#define SSI_SCR_I2S_MODE_SLAVE (2 << 5)
23#define SSI_I2S_MODE_MASK (3 << 5)
24#define SSI_SCR_SYN (1 << 4)
25#define SSI_SCR_NET (1 << 3)
26#define SSI_SCR_RE (1 << 2)
27#define SSI_SCR_TE (1 << 1)
28#define SSI_SCR_SSIEN (1 << 0)
29
30#define SSI_SISR 0x14
31#define SSI_SISR_MASK ((1 << 19) - 1)
32#define SSI_SISR_CMDAU (1 << 18)
33#define SSI_SISR_CMDDU (1 << 17)
34#define SSI_SISR_RXT (1 << 16)
35#define SSI_SISR_RDR1 (1 << 15)
36#define SSI_SISR_RDR0 (1 << 14)
37#define SSI_SISR_TDE1 (1 << 13)
38#define SSI_SISR_TDE0 (1 << 12)
39#define SSI_SISR_ROE1 (1 << 11)
40#define SSI_SISR_ROE0 (1 << 10)
41#define SSI_SISR_TUE1 (1 << 9)
42#define SSI_SISR_TUE0 (1 << 8)
43#define SSI_SISR_TFS (1 << 7)
44#define SSI_SISR_RFS (1 << 6)
45#define SSI_SISR_TLS (1 << 5)
46#define SSI_SISR_RLS (1 << 4)
47#define SSI_SISR_RFF1 (1 << 3)
48#define SSI_SISR_RFF0 (1 << 2)
49#define SSI_SISR_TFE1 (1 << 1)
50#define SSI_SISR_TFE0 (1 << 0)
51
52#define SSI_SIER 0x18
53#define SSI_SIER_RDMAE (1 << 22)
54#define SSI_SIER_RIE (1 << 21)
55#define SSI_SIER_TDMAE (1 << 20)
56#define SSI_SIER_TIE (1 << 19)
57#define SSI_SIER_CMDAU_EN (1 << 18)
58#define SSI_SIER_CMDDU_EN (1 << 17)
59#define SSI_SIER_RXT_EN (1 << 16)
60#define SSI_SIER_RDR1_EN (1 << 15)
61#define SSI_SIER_RDR0_EN (1 << 14)
62#define SSI_SIER_TDE1_EN (1 << 13)
63#define SSI_SIER_TDE0_EN (1 << 12)
64#define SSI_SIER_ROE1_EN (1 << 11)
65#define SSI_SIER_ROE0_EN (1 << 10)
66#define SSI_SIER_TUE1_EN (1 << 9)
67#define SSI_SIER_TUE0_EN (1 << 8)
68#define SSI_SIER_TFS_EN (1 << 7)
69#define SSI_SIER_RFS_EN (1 << 6)
70#define SSI_SIER_TLS_EN (1 << 5)
71#define SSI_SIER_RLS_EN (1 << 4)
72#define SSI_SIER_RFF1_EN (1 << 3)
73#define SSI_SIER_RFF0_EN (1 << 2)
74#define SSI_SIER_TFE1_EN (1 << 1)
75#define SSI_SIER_TFE0_EN (1 << 0)
76
77#define SSI_STCR 0x1c
78#define SSI_STCR_TXBIT0 (1 << 9)
79#define SSI_STCR_TFEN1 (1 << 8)
80#define SSI_STCR_TFEN0 (1 << 7)
81#define SSI_FIFO_ENABLE_0_SHIFT 7
82#define SSI_STCR_TFDIR (1 << 6)
83#define SSI_STCR_TXDIR (1 << 5)
84#define SSI_STCR_TSHFD (1 << 4)
85#define SSI_STCR_TSCKP (1 << 3)
86#define SSI_STCR_TFSI (1 << 2)
87#define SSI_STCR_TFSL (1 << 1)
88#define SSI_STCR_TEFS (1 << 0)
89
90#define SSI_SRCR 0x20
91#define SSI_SRCR_RXBIT0 (1 << 9)
92#define SSI_SRCR_RFEN1 (1 << 8)
93#define SSI_SRCR_RFEN0 (1 << 7)
94#define SSI_FIFO_ENABLE_0_SHIFT 7
95#define SSI_SRCR_RFDIR (1 << 6)
96#define SSI_SRCR_RXDIR (1 << 5)
97#define SSI_SRCR_RSHFD (1 << 4)
98#define SSI_SRCR_RSCKP (1 << 3)
99#define SSI_SRCR_RFSI (1 << 2)
100#define SSI_SRCR_RFSL (1 << 1)
101#define SSI_SRCR_REFS (1 << 0)
102
103#define SSI_SRCCR 0x28
104#define SSI_SRCCR_DIV2 (1 << 18)
105#define SSI_SRCCR_PSR (1 << 17)
106#define SSI_SRCCR_WL(x) ((((x) - 2) >> 1) << 13)
107#define SSI_SRCCR_DC(x) (((x) & 0x1f) << 8)
108#define SSI_SRCCR_PM(x) (((x) & 0xff) << 0)
109#define SSI_SRCCR_WL_MASK (0xf << 13)
110#define SSI_SRCCR_DC_MASK (0x1f << 8)
111#define SSI_SRCCR_PM_MASK (0xff << 0)
112
113#define SSI_STCCR 0x24
114#define SSI_STCCR_DIV2 (1 << 18)
115#define SSI_STCCR_PSR (1 << 17)
116#define SSI_STCCR_WL(x) ((((x) - 2) >> 1) << 13)
117#define SSI_STCCR_DC(x) (((x) & 0x1f) << 8)
118#define SSI_STCCR_PM(x) (((x) & 0xff) << 0)
119#define SSI_STCCR_WL_MASK (0xf << 13)
120#define SSI_STCCR_DC_MASK (0x1f << 8)
121#define SSI_STCCR_PM_MASK (0xff << 0)
122
123#define SSI_SFCSR 0x2c
124#define SSI_SFCSR_RFCNT1(x) (((x) & 0xf) << 28)
125#define SSI_RX_FIFO_1_COUNT_SHIFT 28
126#define SSI_SFCSR_TFCNT1(x) (((x) & 0xf) << 24)
127#define SSI_TX_FIFO_1_COUNT_SHIFT 24
128#define SSI_SFCSR_RFWM1(x) (((x) & 0xf) << 20)
129#define SSI_SFCSR_TFWM1(x) (((x) & 0xf) << 16)
130#define SSI_SFCSR_RFCNT0(x) (((x) & 0xf) << 12)
131#define SSI_RX_FIFO_0_COUNT_SHIFT 12
132#define SSI_SFCSR_TFCNT0(x) (((x) & 0xf) << 8)
133#define SSI_TX_FIFO_0_COUNT_SHIFT 8
134#define SSI_SFCSR_RFWM0(x) (((x) & 0xf) << 4)
135#define SSI_SFCSR_TFWM0(x) (((x) & 0xf) << 0)
136#define SSI_SFCSR_RFWM0_MASK (0xf << 4)
137#define SSI_SFCSR_TFWM0_MASK (0xf << 0)
138
139#define SSI_STR 0x30
140#define SSI_STR_TEST (1 << 15)
141#define SSI_STR_RCK2TCK (1 << 14)
142#define SSI_STR_RFS2TFS (1 << 13)
143#define SSI_STR_RXSTATE(x) (((x) & 0xf) << 8)
144#define SSI_STR_TXD2RXD (1 << 7)
145#define SSI_STR_TCK2RCK (1 << 6)
146#define SSI_STR_TFS2RFS (1 << 5)
147#define SSI_STR_TXSTATE(x) (((x) & 0xf) << 0)
148
149#define SSI_SOR 0x34
150#define SSI_SOR_CLKOFF (1 << 6)
151#define SSI_SOR_RX_CLR (1 << 5)
152#define SSI_SOR_TX_CLR (1 << 4)
153#define SSI_SOR_INIT (1 << 3)
154#define SSI_SOR_WAIT(x) (((x) & 0x3) << 1)
155#define SSI_SOR_WAIT_MASK (0x3 << 1)
156#define SSI_SOR_SYNRST (1 << 0)
157
158#define SSI_SACNT 0x38
159#define SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5)
160#define SSI_SACNT_WR (1 << 4)
161#define SSI_SACNT_RD (1 << 3)
162#define SSI_SACNT_TIF (1 << 2)
163#define SSI_SACNT_FV (1 << 1)
164#define SSI_SACNT_AC97EN (1 << 0)
165
166#define SSI_SACADD 0x3c
167#define SSI_SACDAT 0x40
168#define SSI_SATAG 0x44
169#define SSI_STMSK 0x48
170#define SSI_SRMSK 0x4c
171#define SSI_SACCST 0x50
172#define SSI_SACCEN 0x54
173#define SSI_SACCDIS 0x58
174
175/* SSI clock sources */
176#define IMX_SSP_SYS_CLK 0
177
178/* SSI audio dividers */
179#define IMX_SSI_TX_DIV_2 0
180#define IMX_SSI_TX_DIV_PSR 1
181#define IMX_SSI_TX_DIV_PM 2
182#define IMX_SSI_RX_DIV_2 3
183#define IMX_SSI_RX_DIV_PSR 4
184#define IMX_SSI_RX_DIV_PM 5
185
186#define DRV_NAME "imx-ssi"
187
188#include <linux/dmaengine.h>
189#include <mach/dma.h>
190
191struct imx_pcm_dma_params {
192 int dma;
193 unsigned long dma_addr;
194 int burstsize;
195};
196
197struct imx_ssi {
198 struct platform_device *ac97_dev;
199
200 struct snd_soc_dai *imx_ac97;
201 struct clk *clk;
202 void __iomem *base;
203 int irq;
204 int fiq_enable;
205 unsigned int offset;
206
207 unsigned int flags;
208
209 void (*ac97_reset) (struct snd_ac97 *ac97);
210 void (*ac97_warm_reset)(struct snd_ac97 *ac97);
211
212 struct imx_pcm_dma_params dma_params_rx;
213 struct imx_pcm_dma_params dma_params_tx;
214
215 int enabled;
216
217 struct platform_device *soc_platform_pdev;
218 struct platform_device *soc_platform_pdev_fiq;
219};
220
221struct snd_soc_platform *imx_ssi_fiq_init(struct platform_device *pdev,
222 struct imx_ssi *ssi);
223void imx_ssi_fiq_exit(struct platform_device *pdev, struct imx_ssi *ssi);
224struct snd_soc_platform *imx_ssi_dma_mx2_init(struct platform_device *pdev,
225 struct imx_ssi *ssi);
226
227int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma);
228int imx_pcm_new(struct snd_soc_pcm_runtime *rtd);
229void imx_pcm_free(struct snd_pcm *pcm);
230
231/*
232 * Do not change this as the FIQ handler depends on this size
233 */
234#define IMX_SSI_DMABUF_SIZE (64 * 1024)
235
236#endif /* _IMX_SSI_H */