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1/*
2 * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com)
3 *
4 * This file is licensed under the terms of the GNU General Public
5 * License version 2. This program is licensed "as is" without any
6 * warranty of any kind, whether express or implied.
7 */
8
9#ifndef __DESIGNWARE_LOCAL_H
10#define __DESIGNWARE_LOCAL_H
11
12#include <linux/clk.h>
13#include <linux/device.h>
14#include <linux/types.h>
15#include <sound/dmaengine_pcm.h>
16#include <sound/pcm.h>
17#include <sound/designware_i2s.h>
18
19/* common register for all channel */
20#define IER 0x000
21#define IRER 0x004
22#define ITER 0x008
23#define CER 0x00C
24#define CCR 0x010
25#define RXFFR 0x014
26#define TXFFR 0x018
27
28/* Interrupt status register fields */
29#define ISR_TXFO BIT(5)
30#define ISR_TXFE BIT(4)
31#define ISR_RXFO BIT(1)
32#define ISR_RXDA BIT(0)
33
34/* I2STxRxRegisters for all channels */
35#define LRBR_LTHR(x) (0x40 * x + 0x020)
36#define RRBR_RTHR(x) (0x40 * x + 0x024)
37#define RER(x) (0x40 * x + 0x028)
38#define TER(x) (0x40 * x + 0x02C)
39#define RCR(x) (0x40 * x + 0x030)
40#define TCR(x) (0x40 * x + 0x034)
41#define ISR(x) (0x40 * x + 0x038)
42#define IMR(x) (0x40 * x + 0x03C)
43#define ROR(x) (0x40 * x + 0x040)
44#define TOR(x) (0x40 * x + 0x044)
45#define RFCR(x) (0x40 * x + 0x048)
46#define TFCR(x) (0x40 * x + 0x04C)
47#define RFF(x) (0x40 * x + 0x050)
48#define TFF(x) (0x40 * x + 0x054)
49
50/* I2SCOMPRegisters */
51#define I2S_COMP_PARAM_2 0x01F0
52#define I2S_COMP_PARAM_1 0x01F4
53#define I2S_COMP_VERSION 0x01F8
54#define I2S_COMP_TYPE 0x01FC
55
56/*
57 * Component parameter register fields - define the I2S block's
58 * configuration.
59 */
60#define COMP1_TX_WORDSIZE_3(r) (((r) & GENMASK(27, 25)) >> 25)
61#define COMP1_TX_WORDSIZE_2(r) (((r) & GENMASK(24, 22)) >> 22)
62#define COMP1_TX_WORDSIZE_1(r) (((r) & GENMASK(21, 19)) >> 19)
63#define COMP1_TX_WORDSIZE_0(r) (((r) & GENMASK(18, 16)) >> 16)
64#define COMP1_TX_CHANNELS(r) (((r) & GENMASK(10, 9)) >> 9)
65#define COMP1_RX_CHANNELS(r) (((r) & GENMASK(8, 7)) >> 7)
66#define COMP1_RX_ENABLED(r) (((r) & BIT(6)) >> 6)
67#define COMP1_TX_ENABLED(r) (((r) & BIT(5)) >> 5)
68#define COMP1_MODE_EN(r) (((r) & BIT(4)) >> 4)
69#define COMP1_FIFO_DEPTH_GLOBAL(r) (((r) & GENMASK(3, 2)) >> 2)
70#define COMP1_APB_DATA_WIDTH(r) (((r) & GENMASK(1, 0)) >> 0)
71
72#define COMP2_RX_WORDSIZE_3(r) (((r) & GENMASK(12, 10)) >> 10)
73#define COMP2_RX_WORDSIZE_2(r) (((r) & GENMASK(9, 7)) >> 7)
74#define COMP2_RX_WORDSIZE_1(r) (((r) & GENMASK(5, 3)) >> 3)
75#define COMP2_RX_WORDSIZE_0(r) (((r) & GENMASK(2, 0)) >> 0)
76
77/* Number of entries in WORDSIZE and DATA_WIDTH parameter registers */
78#define COMP_MAX_WORDSIZE (1 << 3)
79#define COMP_MAX_DATA_WIDTH (1 << 2)
80
81#define MAX_CHANNEL_NUM 8
82#define MIN_CHANNEL_NUM 2
83
84union dw_i2s_snd_dma_data {
85 struct i2s_dma_data pd;
86 struct snd_dmaengine_dai_dma_data dt;
87};
88
89struct dw_i2s_dev {
90 void __iomem *i2s_base;
91 struct clk *clk;
92 int active;
93 unsigned int capability;
94 unsigned int quirks;
95 unsigned int i2s_reg_comp1;
96 unsigned int i2s_reg_comp2;
97 struct device *dev;
98 u32 ccr;
99 u32 xfer_resolution;
100 u32 fifo_th;
101
102 /* data related to DMA transfers b/w i2s and DMAC */
103 union dw_i2s_snd_dma_data play_dma_data;
104 union dw_i2s_snd_dma_data capture_dma_data;
105 struct i2s_clk_config_data config;
106 int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
107
108 /* data related to PIO transfers */
109 bool use_pio;
110 struct snd_pcm_substream __rcu *tx_substream;
111 struct snd_pcm_substream __rcu *rx_substream;
112 unsigned int (*tx_fn)(struct dw_i2s_dev *dev,
113 struct snd_pcm_runtime *runtime, unsigned int tx_ptr,
114 bool *period_elapsed);
115 unsigned int (*rx_fn)(struct dw_i2s_dev *dev,
116 struct snd_pcm_runtime *runtime, unsigned int rx_ptr,
117 bool *period_elapsed);
118 unsigned int tx_ptr;
119 unsigned int rx_ptr;
120};
121
122#if IS_ENABLED(CONFIG_SND_DESIGNWARE_PCM)
123void dw_pcm_push_tx(struct dw_i2s_dev *dev);
124void dw_pcm_pop_rx(struct dw_i2s_dev *dev);
125int dw_pcm_register(struct platform_device *pdev);
126#else
127static inline void dw_pcm_push_tx(struct dw_i2s_dev *dev) { }
128static inline void dw_pcm_pop_rx(struct dw_i2s_dev *dev) { }
129static inline int dw_pcm_register(struct platform_device *pdev)
130{
131 return -EINVAL;
132}
133#endif
134
135#endif
1/*
2 * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com)
3 *
4 * This file is licensed under the terms of the GNU General Public
5 * License version 2. This program is licensed "as is" without any
6 * warranty of any kind, whether express or implied.
7 */
8
9#ifndef __DESIGNWARE_LOCAL_H
10#define __DESIGNWARE_LOCAL_H
11
12#include <linux/clk.h>
13#include <linux/device.h>
14#include <linux/types.h>
15#include <sound/dmaengine_pcm.h>
16#include <sound/pcm.h>
17#include <sound/designware_i2s.h>
18
19/* common register for all channel */
20#define IER 0x000
21#define IRER 0x004
22#define ITER 0x008
23#define CER 0x00C
24#define CCR 0x010
25#define RXFFR 0x014
26#define TXFFR 0x018
27
28/* Interrupt status register fields */
29#define ISR_TXFO BIT(5)
30#define ISR_TXFE BIT(4)
31#define ISR_RXFO BIT(1)
32#define ISR_RXDA BIT(0)
33
34/* I2STxRxRegisters for all channels */
35#define LRBR_LTHR(x) (0x40 * x + 0x020)
36#define RRBR_RTHR(x) (0x40 * x + 0x024)
37#define RER(x) (0x40 * x + 0x028)
38#define TER(x) (0x40 * x + 0x02C)
39#define RCR(x) (0x40 * x + 0x030)
40#define TCR(x) (0x40 * x + 0x034)
41#define ISR(x) (0x40 * x + 0x038)
42#define IMR(x) (0x40 * x + 0x03C)
43#define ROR(x) (0x40 * x + 0x040)
44#define TOR(x) (0x40 * x + 0x044)
45#define RFCR(x) (0x40 * x + 0x048)
46#define TFCR(x) (0x40 * x + 0x04C)
47#define RFF(x) (0x40 * x + 0x050)
48#define TFF(x) (0x40 * x + 0x054)
49
50/* I2SCOMPRegisters */
51#define I2S_COMP_PARAM_2 0x01F0
52#define I2S_COMP_PARAM_1 0x01F4
53#define I2S_COMP_VERSION 0x01F8
54#define I2S_COMP_TYPE 0x01FC
55
56/*
57 * Component parameter register fields - define the I2S block's
58 * configuration.
59 */
60#define COMP1_TX_WORDSIZE_3(r) (((r) & GENMASK(27, 25)) >> 25)
61#define COMP1_TX_WORDSIZE_2(r) (((r) & GENMASK(24, 22)) >> 22)
62#define COMP1_TX_WORDSIZE_1(r) (((r) & GENMASK(21, 19)) >> 19)
63#define COMP1_TX_WORDSIZE_0(r) (((r) & GENMASK(18, 16)) >> 16)
64#define COMP1_TX_CHANNELS(r) (((r) & GENMASK(10, 9)) >> 9)
65#define COMP1_RX_CHANNELS(r) (((r) & GENMASK(8, 7)) >> 7)
66#define COMP1_RX_ENABLED(r) (((r) & BIT(6)) >> 6)
67#define COMP1_TX_ENABLED(r) (((r) & BIT(5)) >> 5)
68#define COMP1_MODE_EN(r) (((r) & BIT(4)) >> 4)
69#define COMP1_FIFO_DEPTH_GLOBAL(r) (((r) & GENMASK(3, 2)) >> 2)
70#define COMP1_APB_DATA_WIDTH(r) (((r) & GENMASK(1, 0)) >> 0)
71
72#define COMP2_RX_WORDSIZE_3(r) (((r) & GENMASK(12, 10)) >> 10)
73#define COMP2_RX_WORDSIZE_2(r) (((r) & GENMASK(9, 7)) >> 7)
74#define COMP2_RX_WORDSIZE_1(r) (((r) & GENMASK(5, 3)) >> 3)
75#define COMP2_RX_WORDSIZE_0(r) (((r) & GENMASK(2, 0)) >> 0)
76
77/* Number of entries in WORDSIZE and DATA_WIDTH parameter registers */
78#define COMP_MAX_WORDSIZE (1 << 3)
79#define COMP_MAX_DATA_WIDTH (1 << 2)
80
81#define MAX_CHANNEL_NUM 8
82#define MIN_CHANNEL_NUM 2
83
84union dw_i2s_snd_dma_data {
85 struct i2s_dma_data pd;
86 struct snd_dmaengine_dai_dma_data dt;
87};
88
89struct dw_i2s_dev {
90 void __iomem *i2s_base;
91 struct clk *clk;
92 int active;
93 unsigned int capability;
94 unsigned int quirks;
95 unsigned int i2s_reg_comp1;
96 unsigned int i2s_reg_comp2;
97 struct device *dev;
98 u32 ccr;
99 u32 xfer_resolution;
100 u32 fifo_th;
101
102 /* data related to DMA transfers b/w i2s and DMAC */
103 union dw_i2s_snd_dma_data play_dma_data;
104 union dw_i2s_snd_dma_data capture_dma_data;
105 struct i2s_clk_config_data config;
106 int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
107
108 /* data related to PIO transfers (TX) */
109 bool use_pio;
110 struct snd_pcm_substream __rcu *tx_substream;
111 unsigned int (*tx_fn)(struct dw_i2s_dev *dev,
112 struct snd_pcm_runtime *runtime, unsigned int tx_ptr,
113 bool *period_elapsed);
114 unsigned int tx_ptr;
115};
116
117#if IS_ENABLED(CONFIG_SND_DESIGNWARE_PCM)
118void dw_pcm_push_tx(struct dw_i2s_dev *dev);
119int dw_pcm_register(struct platform_device *pdev);
120#else
121void dw_pcm_push_tx(struct dw_i2s_dev *dev) { }
122int dw_pcm_register(struct platform_device *pdev)
123{
124 return -EINVAL;
125}
126#endif
127
128#endif