1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef _IMX_SSI_H
4 #define _IMX_SSI_H
5
6 #define SSI_STX0 0x00
7 #define SSI_STX1 0x04
8 #define SSI_SRX0 0x08
9 #define SSI_SRX1 0x0c
10
11 #define SSI_SCR 0x10
12 #define SSI_SCR_CLK_IST (1 << 9)
13 #define SSI_SCR_CLK_IST_SHIFT 9
14 #define SSI_SCR_TCH_EN (1 << 8)
15 #define SSI_SCR_SYS_CLK_EN (1 << 7)
16 #define SSI_SCR_I2S_MODE_NORM (0 << 5)
17 #define SSI_SCR_I2S_MODE_MSTR (1 << 5)
18 #define SSI_SCR_I2S_MODE_SLAVE (2 << 5)
19 #define SSI_I2S_MODE_MASK (3 << 5)
20 #define SSI_SCR_SYN (1 << 4)
21 #define SSI_SCR_NET (1 << 3)
22 #define SSI_SCR_RE (1 << 2)
23 #define SSI_SCR_TE (1 << 1)
24 #define SSI_SCR_SSIEN (1 << 0)
25
26 #define SSI_SISR 0x14
27 #define SSI_SISR_MASK ((1 << 19) - 1)
28 #define SSI_SISR_CMDAU (1 << 18)
29 #define SSI_SISR_CMDDU (1 << 17)
30 #define SSI_SISR_RXT (1 << 16)
31 #define SSI_SISR_RDR1 (1 << 15)
32 #define SSI_SISR_RDR0 (1 << 14)
33 #define SSI_SISR_TDE1 (1 << 13)
34 #define SSI_SISR_TDE0 (1 << 12)
35 #define SSI_SISR_ROE1 (1 << 11)
36 #define SSI_SISR_ROE0 (1 << 10)
37 #define SSI_SISR_TUE1 (1 << 9)
38 #define SSI_SISR_TUE0 (1 << 8)
39 #define SSI_SISR_TFS (1 << 7)
40 #define SSI_SISR_RFS (1 << 6)
41 #define SSI_SISR_TLS (1 << 5)
42 #define SSI_SISR_RLS (1 << 4)
43 #define SSI_SISR_RFF1 (1 << 3)
44 #define SSI_SISR_RFF0 (1 << 2)
45 #define SSI_SISR_TFE1 (1 << 1)
46 #define SSI_SISR_TFE0 (1 << 0)
47
48 #define SSI_SIER 0x18
49 #define SSI_SIER_RDMAE (1 << 22)
50 #define SSI_SIER_RIE (1 << 21)
51 #define SSI_SIER_TDMAE (1 << 20)
52 #define SSI_SIER_TIE (1 << 19)
53 #define SSI_SIER_CMDAU_EN (1 << 18)
54 #define SSI_SIER_CMDDU_EN (1 << 17)
55 #define SSI_SIER_RXT_EN (1 << 16)
56 #define SSI_SIER_RDR1_EN (1 << 15)
57 #define SSI_SIER_RDR0_EN (1 << 14)
58 #define SSI_SIER_TDE1_EN (1 << 13)
59 #define SSI_SIER_TDE0_EN (1 << 12)
60 #define SSI_SIER_ROE1_EN (1 << 11)
61 #define SSI_SIER_ROE0_EN (1 << 10)
62 #define SSI_SIER_TUE1_EN (1 << 9)
63 #define SSI_SIER_TUE0_EN (1 << 8)
64 #define SSI_SIER_TFS_EN (1 << 7)
65 #define SSI_SIER_RFS_EN (1 << 6)
66 #define SSI_SIER_TLS_EN (1 << 5)
67 #define SSI_SIER_RLS_EN (1 << 4)
68 #define SSI_SIER_RFF1_EN (1 << 3)
69 #define SSI_SIER_RFF0_EN (1 << 2)
70 #define SSI_SIER_TFE1_EN (1 << 1)
71 #define SSI_SIER_TFE0_EN (1 << 0)
72
73 #define SSI_STCR 0x1c
74 #define SSI_STCR_TXBIT0 (1 << 9)
75 #define SSI_STCR_TFEN1 (1 << 8)
76 #define SSI_STCR_TFEN0 (1 << 7)
77 #define SSI_FIFO_ENABLE_0_SHIFT 7
78 #define SSI_STCR_TFDIR (1 << 6)
79 #define SSI_STCR_TXDIR (1 << 5)
80 #define SSI_STCR_TSHFD (1 << 4)
81 #define SSI_STCR_TSCKP (1 << 3)
82 #define SSI_STCR_TFSI (1 << 2)
83 #define SSI_STCR_TFSL (1 << 1)
84 #define SSI_STCR_TEFS (1 << 0)
85
86 #define SSI_SRCR 0x20
87 #define SSI_SRCR_RXBIT0 (1 << 9)
88 #define SSI_SRCR_RFEN1 (1 << 8)
89 #define SSI_SRCR_RFEN0 (1 << 7)
90 #define SSI_FIFO_ENABLE_0_SHIFT 7
91 #define SSI_SRCR_RFDIR (1 << 6)
92 #define SSI_SRCR_RXDIR (1 << 5)
93 #define SSI_SRCR_RSHFD (1 << 4)
94 #define SSI_SRCR_RSCKP (1 << 3)
95 #define SSI_SRCR_RFSI (1 << 2)
96 #define SSI_SRCR_RFSL (1 << 1)
97 #define SSI_SRCR_REFS (1 << 0)
98
99 #define SSI_SRCCR 0x28
100 #define SSI_SRCCR_DIV2 (1 << 18)
101 #define SSI_SRCCR_PSR (1 << 17)
102 #define SSI_SRCCR_WL(x) ((((x) - 2) >> 1) << 13)
103 #define SSI_SRCCR_DC(x) (((x) & 0x1f) << 8)
104 #define SSI_SRCCR_PM(x) (((x) & 0xff) << 0)
105 #define SSI_SRCCR_WL_MASK (0xf << 13)
106 #define SSI_SRCCR_DC_MASK (0x1f << 8)
107 #define SSI_SRCCR_PM_MASK (0xff << 0)
108
109 #define SSI_STCCR 0x24
110 #define SSI_STCCR_DIV2 (1 << 18)
111 #define SSI_STCCR_PSR (1 << 17)
112 #define SSI_STCCR_WL(x) ((((x) - 2) >> 1) << 13)
113 #define SSI_STCCR_DC(x) (((x) & 0x1f) << 8)
114 #define SSI_STCCR_PM(x) (((x) & 0xff) << 0)
115 #define SSI_STCCR_WL_MASK (0xf << 13)
116 #define SSI_STCCR_DC_MASK (0x1f << 8)
117 #define SSI_STCCR_PM_MASK (0xff << 0)
118
119 #define SSI_SFCSR 0x2c
120 #define SSI_SFCSR_RFCNT1(x) (((x) & 0xf) << 28)
121 #define SSI_RX_FIFO_1_COUNT_SHIFT 28
122 #define SSI_SFCSR_TFCNT1(x) (((x) & 0xf) << 24)
123 #define SSI_TX_FIFO_1_COUNT_SHIFT 24
124 #define SSI_SFCSR_RFWM1(x) (((x) & 0xf) << 20)
125 #define SSI_SFCSR_TFWM1(x) (((x) & 0xf) << 16)
126 #define SSI_SFCSR_RFCNT0(x) (((x) & 0xf) << 12)
127 #define SSI_RX_FIFO_0_COUNT_SHIFT 12
128 #define SSI_SFCSR_TFCNT0(x) (((x) & 0xf) << 8)
129 #define SSI_TX_FIFO_0_COUNT_SHIFT 8
130 #define SSI_SFCSR_RFWM0(x) (((x) & 0xf) << 4)
131 #define SSI_SFCSR_TFWM0(x) (((x) & 0xf) << 0)
132 #define SSI_SFCSR_RFWM0_MASK (0xf << 4)
133 #define SSI_SFCSR_TFWM0_MASK (0xf << 0)
134
135 #define SSI_STR 0x30
136 #define SSI_STR_TEST (1 << 15)
137 #define SSI_STR_RCK2TCK (1 << 14)
138 #define SSI_STR_RFS2TFS (1 << 13)
139 #define SSI_STR_RXSTATE(x) (((x) & 0xf) << 8)
140 #define SSI_STR_TXD2RXD (1 << 7)
141 #define SSI_STR_TCK2RCK (1 << 6)
142 #define SSI_STR_TFS2RFS (1 << 5)
143 #define SSI_STR_TXSTATE(x) (((x) & 0xf) << 0)
144
145 #define SSI_SOR 0x34
146 #define SSI_SOR_CLKOFF (1 << 6)
147 #define SSI_SOR_RX_CLR (1 << 5)
148 #define SSI_SOR_TX_CLR (1 << 4)
149 #define SSI_SOR_INIT (1 << 3)
150 #define SSI_SOR_WAIT(x) (((x) & 0x3) << 1)
151 #define SSI_SOR_WAIT_MASK (0x3 << 1)
152 #define SSI_SOR_SYNRST (1 << 0)
153
154 #define SSI_SACNT 0x38
155 #define SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5)
156 #define SSI_SACNT_WR (1 << 4)
157 #define SSI_SACNT_RD (1 << 3)
158 #define SSI_SACNT_TIF (1 << 2)
159 #define SSI_SACNT_FV (1 << 1)
160 #define SSI_SACNT_AC97EN (1 << 0)
161
162 #define SSI_SACADD 0x3c
163 #define SSI_SACDAT 0x40
164 #define SSI_SATAG 0x44
165 #define SSI_STMSK 0x48
166 #define SSI_SRMSK 0x4c
167 #define SSI_SACCST 0x50
168 #define SSI_SACCEN 0x54
169 #define SSI_SACCDIS 0x58
170
171 /* SSI clock sources */
172 #define IMX_SSP_SYS_CLK 0
173
174 /* SSI audio dividers */
175 #define IMX_SSI_TX_DIV_2 0
176 #define IMX_SSI_TX_DIV_PSR 1
177 #define IMX_SSI_TX_DIV_PM 2
178 #define IMX_SSI_RX_DIV_2 3
179 #define IMX_SSI_RX_DIV_PSR 4
180 #define IMX_SSI_RX_DIV_PM 5
181
182 #define DRV_NAME "imx-ssi"
183
184 #include <linux/dmaengine.h>
185 #include <linux/dma/imx-dma.h>
186 #include <sound/dmaengine_pcm.h>
187 #include "imx-pcm.h"
188
189 struct imx_ssi {
190 struct platform_device *ac97_dev;
191
192 struct snd_soc_dai *imx_ac97;
193 struct clk *clk;
194 void __iomem *base;
195 int irq;
196 int fiq_enable;
197 unsigned int offset;
198
199 unsigned int flags;
200
201 void (*ac97_reset) (struct snd_ac97 *ac97);
202 void (*ac97_warm_reset)(struct snd_ac97 *ac97);
203
204 struct snd_dmaengine_dai_dma_data dma_params_rx;
205 struct snd_dmaengine_dai_dma_data dma_params_tx;
206 struct imx_dma_data filter_data_tx;
207 struct imx_dma_data filter_data_rx;
208 struct imx_pcm_fiq_params fiq_params;
209
210 int fiq_init;
211 int dma_init;
212 };
213
214 #endif /* _IMX_SSI_H */
215
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