Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Fifo-attached Serial Interface (FSI) support for SH7724 |
| 3 | * |
| 4 | * Copyright (C) 2009 Renesas Solutions Corp. |
| 5 | * Kuninori Morimoto <morimoto.kuninori@renesas.com> |
| 6 | * |
| 7 | * Based on ssi.c |
| 8 | * Copyright (c) 2007 Manuel Lauss <mano@roarinelk.homelinux.net> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 15 | #include <linux/delay.h> |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 16 | #include <linux/pm_runtime.h> |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 17 | #include <linux/io.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 18 | #include <linux/slab.h> |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 19 | #include <sound/soc.h> |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 20 | #include <sound/sh_fsi.h> |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 21 | |
| 22 | #define DO_FMT 0x0000 |
| 23 | #define DOFF_CTL 0x0004 |
| 24 | #define DOFF_ST 0x0008 |
| 25 | #define DI_FMT 0x000C |
| 26 | #define DIFF_CTL 0x0010 |
| 27 | #define DIFF_ST 0x0014 |
| 28 | #define CKG1 0x0018 |
| 29 | #define CKG2 0x001C |
| 30 | #define DIDT 0x0020 |
| 31 | #define DODT 0x0024 |
| 32 | #define MUTE_ST 0x0028 |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 33 | #define OUT_SEL 0x0030 |
| 34 | #define REG_END OUT_SEL |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 35 | |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 36 | #define A_MST_CTLR 0x0180 |
| 37 | #define B_MST_CTLR 0x01A0 |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 38 | #define CPU_INT_ST 0x01F4 |
| 39 | #define CPU_IEMSK 0x01F8 |
| 40 | #define CPU_IMSK 0x01FC |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 41 | #define INT_ST 0x0200 |
| 42 | #define IEMSK 0x0204 |
| 43 | #define IMSK 0x0208 |
| 44 | #define MUTE 0x020C |
| 45 | #define CLK_RST 0x0210 |
| 46 | #define SOFT_RST 0x0214 |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 47 | #define FIFO_SZ 0x0218 |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 48 | #define MREG_START A_MST_CTLR |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 49 | #define MREG_END FIFO_SZ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 50 | |
| 51 | /* DO_FMT */ |
| 52 | /* DI_FMT */ |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 53 | #define CR_MONO (0x0 << 4) |
| 54 | #define CR_MONO_D (0x1 << 4) |
| 55 | #define CR_PCM (0x2 << 4) |
| 56 | #define CR_I2S (0x3 << 4) |
| 57 | #define CR_TDM (0x4 << 4) |
| 58 | #define CR_TDM_D (0x5 << 4) |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 59 | #define CR_SPDIF 0x00100120 |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 60 | |
| 61 | /* DOFF_CTL */ |
| 62 | /* DIFF_CTL */ |
| 63 | #define IRQ_HALF 0x00100000 |
| 64 | #define FIFO_CLR 0x00000001 |
| 65 | |
| 66 | /* DOFF_ST */ |
| 67 | #define ERR_OVER 0x00000010 |
| 68 | #define ERR_UNDER 0x00000001 |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 69 | #define ST_ERR (ERR_OVER | ERR_UNDER) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 70 | |
Kuninori Morimoto | ccad7b4 | 2010-07-13 12:13:14 +0900 | [diff] [blame] | 71 | /* CKG1 */ |
| 72 | #define ACKMD_MASK 0x00007000 |
| 73 | #define BPFMD_MASK 0x00000700 |
| 74 | |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 75 | /* A/B MST_CTLR */ |
| 76 | #define BP (1 << 4) /* Fix the signal of Biphase output */ |
| 77 | #define SE (1 << 0) /* Fix the master clock */ |
| 78 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 79 | /* CLK_RST */ |
| 80 | #define B_CLK 0x00000010 |
| 81 | #define A_CLK 0x00000001 |
| 82 | |
| 83 | /* INT_ST */ |
| 84 | #define INT_B_IN (1 << 12) |
| 85 | #define INT_B_OUT (1 << 8) |
| 86 | #define INT_A_IN (1 << 4) |
| 87 | #define INT_A_OUT (1 << 0) |
| 88 | |
Kuninori Morimoto | feb58cf | 2010-03-24 15:27:24 +0900 | [diff] [blame] | 89 | /* SOFT_RST */ |
| 90 | #define PBSR (1 << 12) /* Port B Software Reset */ |
| 91 | #define PASR (1 << 8) /* Port A Software Reset */ |
| 92 | #define IR (1 << 4) /* Interrupt Reset */ |
| 93 | #define FSISR (1 << 0) /* Software Reset */ |
| 94 | |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 95 | /* FIFO_SZ */ |
| 96 | #define OUT_SZ_MASK 0x7 |
| 97 | #define BO_SZ_SHIFT 8 |
| 98 | #define AO_SZ_SHIFT 0 |
| 99 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 100 | #define FSI_RATES SNDRV_PCM_RATE_8000_96000 |
| 101 | |
| 102 | #define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) |
| 103 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 104 | /* |
| 105 | * struct |
| 106 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 107 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 108 | struct fsi_priv { |
| 109 | void __iomem *base; |
| 110 | struct snd_pcm_substream *substream; |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 111 | struct fsi_master *master; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 112 | |
| 113 | int fifo_max; |
| 114 | int chan; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 115 | |
| 116 | int byte_offset; |
| 117 | int period_len; |
| 118 | int buffer_len; |
| 119 | int periods; |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 120 | |
| 121 | u32 mst_ctrl; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 122 | }; |
| 123 | |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 124 | struct fsi_core { |
| 125 | int ver; |
| 126 | |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 127 | u32 int_st; |
| 128 | u32 iemsk; |
| 129 | u32 imsk; |
| 130 | }; |
| 131 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 132 | struct fsi_master { |
| 133 | void __iomem *base; |
| 134 | int irq; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 135 | struct fsi_priv fsia; |
| 136 | struct fsi_priv fsib; |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 137 | struct fsi_core *core; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 138 | struct sh_fsi_platform_info *info; |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 139 | spinlock_t lock; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 140 | }; |
| 141 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 142 | /* |
| 143 | * basic read write function |
| 144 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 145 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 146 | static void __fsi_reg_write(u32 reg, u32 data) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 147 | { |
| 148 | /* valid data area is 24bit */ |
| 149 | data &= 0x00ffffff; |
| 150 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 151 | __raw_writel(data, reg); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | static u32 __fsi_reg_read(u32 reg) |
| 155 | { |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 156 | return __raw_readl(reg); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 157 | } |
| 158 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 159 | static void __fsi_reg_mask_set(u32 reg, u32 mask, u32 data) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 160 | { |
| 161 | u32 val = __fsi_reg_read(reg); |
| 162 | |
| 163 | val &= ~mask; |
| 164 | val |= data & mask; |
| 165 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 166 | __fsi_reg_write(reg, val); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 167 | } |
| 168 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 169 | static void fsi_reg_write(struct fsi_priv *fsi, u32 reg, u32 data) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 170 | { |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 171 | if (reg > REG_END) { |
| 172 | pr_err("fsi: register access err (%s)\n", __func__); |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 173 | return; |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 174 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 175 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 176 | __fsi_reg_write((u32)(fsi->base + reg), data); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | static u32 fsi_reg_read(struct fsi_priv *fsi, u32 reg) |
| 180 | { |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 181 | if (reg > REG_END) { |
| 182 | pr_err("fsi: register access err (%s)\n", __func__); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 183 | return 0; |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 184 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 185 | |
| 186 | return __fsi_reg_read((u32)(fsi->base + reg)); |
| 187 | } |
| 188 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 189 | static void fsi_reg_mask_set(struct fsi_priv *fsi, u32 reg, u32 mask, u32 data) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 190 | { |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 191 | if (reg > REG_END) { |
| 192 | pr_err("fsi: register access err (%s)\n", __func__); |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 193 | return; |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 194 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 195 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 196 | __fsi_reg_mask_set((u32)(fsi->base + reg), mask, data); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 197 | } |
| 198 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 199 | static void fsi_master_write(struct fsi_master *master, u32 reg, u32 data) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 200 | { |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 201 | unsigned long flags; |
| 202 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 203 | if ((reg < MREG_START) || |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 204 | (reg > MREG_END)) { |
| 205 | pr_err("fsi: register access err (%s)\n", __func__); |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 206 | return; |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 207 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 208 | |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 209 | spin_lock_irqsave(&master->lock, flags); |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 210 | __fsi_reg_write((u32)(master->base + reg), data); |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 211 | spin_unlock_irqrestore(&master->lock, flags); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 212 | } |
| 213 | |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 214 | static u32 fsi_master_read(struct fsi_master *master, u32 reg) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 215 | { |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 216 | u32 ret; |
| 217 | unsigned long flags; |
| 218 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 219 | if ((reg < MREG_START) || |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 220 | (reg > MREG_END)) { |
| 221 | pr_err("fsi: register access err (%s)\n", __func__); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 222 | return 0; |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 223 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 224 | |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 225 | spin_lock_irqsave(&master->lock, flags); |
| 226 | ret = __fsi_reg_read((u32)(master->base + reg)); |
| 227 | spin_unlock_irqrestore(&master->lock, flags); |
| 228 | |
| 229 | return ret; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 230 | } |
| 231 | |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 232 | static void fsi_master_mask_set(struct fsi_master *master, |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 233 | u32 reg, u32 mask, u32 data) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 234 | { |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 235 | unsigned long flags; |
| 236 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 237 | if ((reg < MREG_START) || |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 238 | (reg > MREG_END)) { |
| 239 | pr_err("fsi: register access err (%s)\n", __func__); |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 240 | return; |
Kuninori Morimoto | d785414 | 2010-07-13 12:13:09 +0900 | [diff] [blame] | 241 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 242 | |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 243 | spin_lock_irqsave(&master->lock, flags); |
Guennadi Liakhovetski | 0f69d97 | 2010-02-03 17:37:23 +0100 | [diff] [blame] | 244 | __fsi_reg_mask_set((u32)(master->base + reg), mask, data); |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 245 | spin_unlock_irqrestore(&master->lock, flags); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 246 | } |
| 247 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 248 | /* |
| 249 | * basic function |
| 250 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 251 | |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 252 | static struct fsi_master *fsi_get_master(struct fsi_priv *fsi) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 253 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 254 | return fsi->master; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | static int fsi_is_port_a(struct fsi_priv *fsi) |
| 258 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 259 | return fsi->master->base == fsi->base; |
| 260 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 261 | |
Kuninori Morimoto | 142e817 | 2009-12-28 14:09:11 +0900 | [diff] [blame] | 262 | static struct snd_soc_dai *fsi_get_dai(struct snd_pcm_substream *substream) |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 263 | { |
| 264 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
Kuninori Morimoto | 142e817 | 2009-12-28 14:09:11 +0900 | [diff] [blame] | 265 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 266 | return rtd->cpu_dai; |
Kuninori Morimoto | 142e817 | 2009-12-28 14:09:11 +0900 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | static struct fsi_priv *fsi_get_priv(struct snd_pcm_substream *substream) |
| 270 | { |
| 271 | struct snd_soc_dai *dai = fsi_get_dai(substream); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 272 | struct fsi_master *master = snd_soc_dai_get_drvdata(dai); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 273 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 274 | if (dai->id == 0) |
| 275 | return &master->fsia; |
| 276 | else |
| 277 | return &master->fsib; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | static u32 fsi_get_info_flags(struct fsi_priv *fsi) |
| 281 | { |
| 282 | int is_porta = fsi_is_port_a(fsi); |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 283 | struct fsi_master *master = fsi_get_master(fsi); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 284 | |
| 285 | return is_porta ? master->info->porta_flags : |
| 286 | master->info->portb_flags; |
| 287 | } |
| 288 | |
| 289 | static int fsi_is_master_mode(struct fsi_priv *fsi, int is_play) |
| 290 | { |
| 291 | u32 mode; |
| 292 | u32 flags = fsi_get_info_flags(fsi); |
| 293 | |
| 294 | mode = is_play ? SH_FSI_OUT_SLAVE_MODE : SH_FSI_IN_SLAVE_MODE; |
| 295 | |
| 296 | /* return |
| 297 | * 1 : master mode |
| 298 | * 0 : slave mode |
| 299 | */ |
| 300 | |
| 301 | return (mode & flags) != mode; |
| 302 | } |
| 303 | |
| 304 | static u32 fsi_port_ab_io_bit(struct fsi_priv *fsi, int is_play) |
| 305 | { |
| 306 | int is_porta = fsi_is_port_a(fsi); |
| 307 | u32 data; |
| 308 | |
| 309 | if (is_porta) |
| 310 | data = is_play ? (1 << 0) : (1 << 4); |
| 311 | else |
| 312 | data = is_play ? (1 << 8) : (1 << 12); |
| 313 | |
| 314 | return data; |
| 315 | } |
| 316 | |
| 317 | static void fsi_stream_push(struct fsi_priv *fsi, |
| 318 | struct snd_pcm_substream *substream, |
| 319 | u32 buffer_len, |
| 320 | u32 period_len) |
| 321 | { |
| 322 | fsi->substream = substream; |
| 323 | fsi->buffer_len = buffer_len; |
| 324 | fsi->period_len = period_len; |
| 325 | fsi->byte_offset = 0; |
| 326 | fsi->periods = 0; |
| 327 | } |
| 328 | |
| 329 | static void fsi_stream_pop(struct fsi_priv *fsi) |
| 330 | { |
| 331 | fsi->substream = NULL; |
| 332 | fsi->buffer_len = 0; |
| 333 | fsi->period_len = 0; |
| 334 | fsi->byte_offset = 0; |
| 335 | fsi->periods = 0; |
| 336 | } |
| 337 | |
| 338 | static int fsi_get_fifo_residue(struct fsi_priv *fsi, int is_play) |
| 339 | { |
| 340 | u32 status; |
| 341 | u32 reg = is_play ? DOFF_ST : DIFF_ST; |
| 342 | int residue; |
| 343 | |
| 344 | status = fsi_reg_read(fsi, reg); |
| 345 | residue = 0x1ff & (status >> 8); |
| 346 | residue *= fsi->chan; |
| 347 | |
| 348 | return residue; |
| 349 | } |
| 350 | |
Kuninori Morimoto | c79eab3 | 2010-09-17 13:48:05 +0900 | [diff] [blame] | 351 | static u8 *fsi_dma_get_area(struct fsi_priv *fsi) |
| 352 | { |
| 353 | return fsi->substream->runtime->dma_area + fsi->byte_offset; |
| 354 | } |
| 355 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 356 | /* |
| 357 | * irq function |
| 358 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 359 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 360 | static void fsi_irq_enable(struct fsi_priv *fsi, int is_play) |
| 361 | { |
| 362 | u32 data = fsi_port_ab_io_bit(fsi, is_play); |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 363 | struct fsi_master *master = fsi_get_master(fsi); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 364 | |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 365 | fsi_master_mask_set(master, master->core->imsk, data, data); |
| 366 | fsi_master_mask_set(master, master->core->iemsk, data, data); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | static void fsi_irq_disable(struct fsi_priv *fsi, int is_play) |
| 370 | { |
| 371 | u32 data = fsi_port_ab_io_bit(fsi, is_play); |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 372 | struct fsi_master *master = fsi_get_master(fsi); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 373 | |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 374 | fsi_master_mask_set(master, master->core->imsk, data, 0); |
| 375 | fsi_master_mask_set(master, master->core->iemsk, data, 0); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 376 | } |
| 377 | |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 378 | static u32 fsi_irq_get_status(struct fsi_master *master) |
| 379 | { |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 380 | return fsi_master_read(master, master->core->int_st); |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | static void fsi_irq_clear_all_status(struct fsi_master *master) |
| 384 | { |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 385 | fsi_master_write(master, master->core->int_st, 0); |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | static void fsi_irq_clear_status(struct fsi_priv *fsi) |
| 389 | { |
| 390 | u32 data = 0; |
| 391 | struct fsi_master *master = fsi_get_master(fsi); |
| 392 | |
| 393 | data |= fsi_port_ab_io_bit(fsi, 0); |
| 394 | data |= fsi_port_ab_io_bit(fsi, 1); |
| 395 | |
| 396 | /* clear interrupt factor */ |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 397 | fsi_master_mask_set(master, master->core->int_st, data, 0); |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 398 | } |
| 399 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 400 | /* |
| 401 | * SPDIF master clock function |
| 402 | * |
| 403 | * These functions are used later FSI2 |
| 404 | */ |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 405 | static void fsi_spdif_clk_ctrl(struct fsi_priv *fsi, int enable) |
| 406 | { |
| 407 | struct fsi_master *master = fsi_get_master(fsi); |
| 408 | u32 val = BP | SE; |
| 409 | |
| 410 | if (master->core->ver < 2) { |
| 411 | pr_err("fsi: register access err (%s)\n", __func__); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | if (enable) |
| 416 | fsi_master_mask_set(master, fsi->mst_ctrl, val, val); |
| 417 | else |
| 418 | fsi_master_mask_set(master, fsi->mst_ctrl, val, 0); |
| 419 | } |
| 420 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 421 | /* |
| 422 | * ctrl function |
| 423 | */ |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 424 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 425 | static void fsi_clk_ctrl(struct fsi_priv *fsi, int enable) |
| 426 | { |
| 427 | u32 val = fsi_is_port_a(fsi) ? (1 << 0) : (1 << 4); |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 428 | struct fsi_master *master = fsi_get_master(fsi); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 429 | |
| 430 | if (enable) |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 431 | fsi_master_mask_set(master, CLK_RST, val, val); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 432 | else |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 433 | fsi_master_mask_set(master, CLK_RST, val, 0); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 434 | } |
| 435 | |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 436 | static void fsi_fifo_init(struct fsi_priv *fsi, |
| 437 | int is_play, |
| 438 | struct snd_soc_dai *dai) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 439 | { |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 440 | struct fsi_master *master = fsi_get_master(fsi); |
| 441 | u32 ctrl, shift, i; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 442 | |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 443 | /* get on-chip RAM capacity */ |
| 444 | shift = fsi_master_read(master, FIFO_SZ); |
| 445 | shift >>= fsi_is_port_a(fsi) ? AO_SZ_SHIFT : BO_SZ_SHIFT; |
| 446 | shift &= OUT_SZ_MASK; |
| 447 | fsi->fifo_max = 256 << shift; |
| 448 | dev_dbg(dai->dev, "fifo = %d words\n", fsi->fifo_max); |
| 449 | |
| 450 | /* |
| 451 | * The maximum number of sample data varies depending |
| 452 | * on the number of channels selected for the format. |
| 453 | * |
| 454 | * FIFOs are used in 4-channel units in 3-channel mode |
| 455 | * and in 8-channel units in 5- to 7-channel mode |
| 456 | * meaning that more FIFOs than the required size of DPRAM |
| 457 | * are used. |
| 458 | * |
| 459 | * ex) if 256 words of DP-RAM is connected |
| 460 | * 1 channel: 256 (256 x 1 = 256) |
| 461 | * 2 channels: 128 (128 x 2 = 256) |
| 462 | * 3 channels: 64 ( 64 x 3 = 192) |
| 463 | * 4 channels: 64 ( 64 x 4 = 256) |
| 464 | * 5 channels: 32 ( 32 x 5 = 160) |
| 465 | * 6 channels: 32 ( 32 x 6 = 192) |
| 466 | * 7 channels: 32 ( 32 x 7 = 224) |
| 467 | * 8 channels: 32 ( 32 x 8 = 256) |
| 468 | */ |
| 469 | for (i = 1; i < fsi->chan; i <<= 1) |
| 470 | fsi->fifo_max >>= 1; |
| 471 | dev_dbg(dai->dev, "%d channel %d store\n", fsi->chan, fsi->fifo_max); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 472 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 473 | ctrl = is_play ? DOFF_CTL : DIFF_CTL; |
| 474 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 475 | /* set interrupt generation factor */ |
| 476 | fsi_reg_write(fsi, ctrl, IRQ_HALF); |
| 477 | |
| 478 | /* clear FIFO */ |
| 479 | fsi_reg_mask_set(fsi, ctrl, FIFO_CLR, FIFO_CLR); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 480 | } |
| 481 | |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 482 | static void fsi_soft_all_reset(struct fsi_master *master) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 483 | { |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 484 | /* port AB reset */ |
Kuninori Morimoto | feb58cf | 2010-03-24 15:27:24 +0900 | [diff] [blame] | 485 | fsi_master_mask_set(master, SOFT_RST, PASR | PBSR, 0); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 486 | mdelay(10); |
| 487 | |
| 488 | /* soft reset */ |
Kuninori Morimoto | feb58cf | 2010-03-24 15:27:24 +0900 | [diff] [blame] | 489 | fsi_master_mask_set(master, SOFT_RST, FSISR, 0); |
| 490 | fsi_master_mask_set(master, SOFT_RST, FSISR, FSISR); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 491 | mdelay(10); |
| 492 | } |
| 493 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 494 | /* playback interrupt */ |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 495 | static int fsi_data_push(struct fsi_priv *fsi, int startup) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 496 | { |
| 497 | struct snd_pcm_runtime *runtime; |
| 498 | struct snd_pcm_substream *substream = NULL; |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 499 | u32 status; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 500 | int send; |
| 501 | int fifo_free; |
| 502 | int width; |
Kuninori Morimoto | 9ddc9aa | 2009-10-30 12:02:39 +0900 | [diff] [blame] | 503 | u8 *start; |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 504 | int i, over_period; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 505 | |
| 506 | if (!fsi || |
| 507 | !fsi->substream || |
| 508 | !fsi->substream->runtime) |
| 509 | return -EINVAL; |
| 510 | |
Kuninori Morimoto | 1c418d1 | 2009-12-28 14:09:05 +0900 | [diff] [blame] | 511 | over_period = 0; |
| 512 | substream = fsi->substream; |
| 513 | runtime = substream->runtime; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 514 | |
| 515 | /* FSI FIFO has limit. |
| 516 | * So, this driver can not send periods data at a time |
| 517 | */ |
| 518 | if (fsi->byte_offset >= |
| 519 | fsi->period_len * (fsi->periods + 1)) { |
| 520 | |
Kuninori Morimoto | 1c418d1 | 2009-12-28 14:09:05 +0900 | [diff] [blame] | 521 | over_period = 1; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 522 | fsi->periods = (fsi->periods + 1) % runtime->periods; |
| 523 | |
| 524 | if (0 == fsi->periods) |
| 525 | fsi->byte_offset = 0; |
| 526 | } |
| 527 | |
| 528 | /* get 1 channel data width */ |
| 529 | width = frames_to_bytes(runtime, 1) / fsi->chan; |
| 530 | |
| 531 | /* get send size for alsa */ |
| 532 | send = (fsi->buffer_len - fsi->byte_offset) / width; |
| 533 | |
| 534 | /* get FIFO free size */ |
| 535 | fifo_free = (fsi->fifo_max * fsi->chan) - fsi_get_fifo_residue(fsi, 1); |
| 536 | |
| 537 | /* size check */ |
| 538 | if (fifo_free < send) |
| 539 | send = fifo_free; |
| 540 | |
Kuninori Morimoto | c79eab3 | 2010-09-17 13:48:05 +0900 | [diff] [blame] | 541 | start = fsi_dma_get_area(fsi); |
Kuninori Morimoto | 9ddc9aa | 2009-10-30 12:02:39 +0900 | [diff] [blame] | 542 | |
| 543 | switch (width) { |
| 544 | case 2: |
| 545 | for (i = 0; i < send; i++) |
| 546 | fsi_reg_write(fsi, DODT, |
| 547 | ((u32)*((u16 *)start + i) << 8)); |
| 548 | break; |
| 549 | case 4: |
| 550 | for (i = 0; i < send; i++) |
| 551 | fsi_reg_write(fsi, DODT, *((u32 *)start + i)); |
| 552 | break; |
| 553 | default: |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 554 | return -EINVAL; |
Kuninori Morimoto | 9ddc9aa | 2009-10-30 12:02:39 +0900 | [diff] [blame] | 555 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 556 | |
| 557 | fsi->byte_offset += send * width; |
| 558 | |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 559 | status = fsi_reg_read(fsi, DOFF_ST); |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 560 | if (!startup) { |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 561 | struct snd_soc_dai *dai = fsi_get_dai(substream); |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 562 | |
| 563 | if (status & ERR_OVER) |
| 564 | dev_err(dai->dev, "over run\n"); |
| 565 | if (status & ERR_UNDER) |
| 566 | dev_err(dai->dev, "under run\n"); |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 567 | } |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 568 | fsi_reg_write(fsi, DOFF_ST, 0); |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 569 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 570 | fsi_irq_enable(fsi, 1); |
| 571 | |
Kuninori Morimoto | 1c418d1 | 2009-12-28 14:09:05 +0900 | [diff] [blame] | 572 | if (over_period) |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 573 | snd_pcm_period_elapsed(substream); |
| 574 | |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 575 | return 0; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 576 | } |
| 577 | |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 578 | static int fsi_data_pop(struct fsi_priv *fsi, int startup) |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 579 | { |
| 580 | struct snd_pcm_runtime *runtime; |
| 581 | struct snd_pcm_substream *substream = NULL; |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 582 | u32 status; |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 583 | int free; |
| 584 | int fifo_fill; |
| 585 | int width; |
| 586 | u8 *start; |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 587 | int i, over_period; |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 588 | |
| 589 | if (!fsi || |
| 590 | !fsi->substream || |
| 591 | !fsi->substream->runtime) |
| 592 | return -EINVAL; |
| 593 | |
Kuninori Morimoto | 1c418d1 | 2009-12-28 14:09:05 +0900 | [diff] [blame] | 594 | over_period = 0; |
| 595 | substream = fsi->substream; |
| 596 | runtime = substream->runtime; |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 597 | |
| 598 | /* FSI FIFO has limit. |
| 599 | * So, this driver can not send periods data at a time |
| 600 | */ |
| 601 | if (fsi->byte_offset >= |
| 602 | fsi->period_len * (fsi->periods + 1)) { |
| 603 | |
Kuninori Morimoto | 1c418d1 | 2009-12-28 14:09:05 +0900 | [diff] [blame] | 604 | over_period = 1; |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 605 | fsi->periods = (fsi->periods + 1) % runtime->periods; |
| 606 | |
| 607 | if (0 == fsi->periods) |
| 608 | fsi->byte_offset = 0; |
| 609 | } |
| 610 | |
| 611 | /* get 1 channel data width */ |
| 612 | width = frames_to_bytes(runtime, 1) / fsi->chan; |
| 613 | |
| 614 | /* get free space for alsa */ |
| 615 | free = (fsi->buffer_len - fsi->byte_offset) / width; |
| 616 | |
| 617 | /* get recv size */ |
| 618 | fifo_fill = fsi_get_fifo_residue(fsi, 0); |
| 619 | |
| 620 | if (free < fifo_fill) |
| 621 | fifo_fill = free; |
| 622 | |
Kuninori Morimoto | c79eab3 | 2010-09-17 13:48:05 +0900 | [diff] [blame] | 623 | start = fsi_dma_get_area(fsi); |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 624 | |
| 625 | switch (width) { |
| 626 | case 2: |
| 627 | for (i = 0; i < fifo_fill; i++) |
| 628 | *((u16 *)start + i) = |
| 629 | (u16)(fsi_reg_read(fsi, DIDT) >> 8); |
| 630 | break; |
| 631 | case 4: |
| 632 | for (i = 0; i < fifo_fill; i++) |
| 633 | *((u32 *)start + i) = fsi_reg_read(fsi, DIDT); |
| 634 | break; |
| 635 | default: |
| 636 | return -EINVAL; |
| 637 | } |
| 638 | |
| 639 | fsi->byte_offset += fifo_fill * width; |
| 640 | |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 641 | status = fsi_reg_read(fsi, DIFF_ST); |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 642 | if (!startup) { |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 643 | struct snd_soc_dai *dai = fsi_get_dai(substream); |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 644 | |
| 645 | if (status & ERR_OVER) |
| 646 | dev_err(dai->dev, "over run\n"); |
| 647 | if (status & ERR_UNDER) |
| 648 | dev_err(dai->dev, "under run\n"); |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 649 | } |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 650 | fsi_reg_write(fsi, DIFF_ST, 0); |
Kuninori Morimoto | 59c3b00 | 2009-12-28 14:09:16 +0900 | [diff] [blame] | 651 | |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 652 | fsi_irq_enable(fsi, 0); |
| 653 | |
Kuninori Morimoto | 1c418d1 | 2009-12-28 14:09:05 +0900 | [diff] [blame] | 654 | if (over_period) |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 655 | snd_pcm_period_elapsed(substream); |
| 656 | |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 657 | return 0; |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 658 | } |
| 659 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 660 | static irqreturn_t fsi_interrupt(int irq, void *data) |
| 661 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 662 | struct fsi_master *master = data; |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 663 | u32 int_st = fsi_irq_get_status(master); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 664 | |
| 665 | /* clear irq status */ |
Kuninori Morimoto | feb58cf | 2010-03-24 15:27:24 +0900 | [diff] [blame] | 666 | fsi_master_mask_set(master, SOFT_RST, IR, 0); |
| 667 | fsi_master_mask_set(master, SOFT_RST, IR, IR); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 668 | |
| 669 | if (int_st & INT_A_OUT) |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 670 | fsi_data_push(&master->fsia, 0); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 671 | if (int_st & INT_B_OUT) |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 672 | fsi_data_push(&master->fsib, 0); |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 673 | if (int_st & INT_A_IN) |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 674 | fsi_data_pop(&master->fsia, 0); |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 675 | if (int_st & INT_B_IN) |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 676 | fsi_data_pop(&master->fsib, 0); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 677 | |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 678 | fsi_irq_clear_all_status(master); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 679 | |
| 680 | return IRQ_HANDLED; |
| 681 | } |
| 682 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 683 | /* |
| 684 | * dai ops |
| 685 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 686 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 687 | static int fsi_dai_startup(struct snd_pcm_substream *substream, |
| 688 | struct snd_soc_dai *dai) |
| 689 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 690 | struct fsi_priv *fsi = fsi_get_priv(substream); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 691 | u32 flags = fsi_get_info_flags(fsi); |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 692 | struct fsi_master *master = fsi_get_master(fsi); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 693 | u32 fmt; |
| 694 | u32 reg; |
| 695 | u32 data; |
| 696 | int is_play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); |
| 697 | int is_master; |
| 698 | int ret = 0; |
| 699 | |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 700 | pm_runtime_get_sync(dai->dev); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 701 | |
| 702 | /* CKG1 */ |
| 703 | data = is_play ? (1 << 0) : (1 << 4); |
| 704 | is_master = fsi_is_master_mode(fsi, is_play); |
| 705 | if (is_master) |
| 706 | fsi_reg_mask_set(fsi, CKG1, data, data); |
| 707 | else |
| 708 | fsi_reg_mask_set(fsi, CKG1, data, 0); |
| 709 | |
| 710 | /* clock inversion (CKG2) */ |
| 711 | data = 0; |
Kuninori Morimoto | b427b44 | 2010-07-13 12:01:15 +0900 | [diff] [blame] | 712 | if (SH_FSI_LRM_INV & flags) |
| 713 | data |= 1 << 12; |
| 714 | if (SH_FSI_BRM_INV & flags) |
| 715 | data |= 1 << 8; |
| 716 | if (SH_FSI_LRS_INV & flags) |
| 717 | data |= 1 << 4; |
| 718 | if (SH_FSI_BRS_INV & flags) |
| 719 | data |= 1 << 0; |
| 720 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 721 | fsi_reg_write(fsi, CKG2, data); |
| 722 | |
| 723 | /* do fmt, di fmt */ |
| 724 | data = 0; |
| 725 | reg = is_play ? DO_FMT : DI_FMT; |
| 726 | fmt = is_play ? SH_FSI_GET_OFMT(flags) : SH_FSI_GET_IFMT(flags); |
| 727 | switch (fmt) { |
| 728 | case SH_FSI_FMT_MONO: |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 729 | data = CR_MONO; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 730 | fsi->chan = 1; |
| 731 | break; |
| 732 | case SH_FSI_FMT_MONO_DELAY: |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 733 | data = CR_MONO_D; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 734 | fsi->chan = 1; |
| 735 | break; |
| 736 | case SH_FSI_FMT_PCM: |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 737 | data = CR_PCM; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 738 | fsi->chan = 2; |
| 739 | break; |
| 740 | case SH_FSI_FMT_I2S: |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 741 | data = CR_I2S; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 742 | fsi->chan = 2; |
| 743 | break; |
| 744 | case SH_FSI_FMT_TDM: |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 745 | fsi->chan = is_play ? |
| 746 | SH_FSI_GET_CH_O(flags) : SH_FSI_GET_CH_I(flags); |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 747 | data = CR_TDM | (fsi->chan - 1); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 748 | break; |
| 749 | case SH_FSI_FMT_TDM_DELAY: |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 750 | fsi->chan = is_play ? |
| 751 | SH_FSI_GET_CH_O(flags) : SH_FSI_GET_CH_I(flags); |
Kuninori Morimoto | a7ffb52 | 2010-07-13 12:13:00 +0900 | [diff] [blame] | 752 | data = CR_TDM_D | (fsi->chan - 1); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 753 | break; |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 754 | case SH_FSI_FMT_SPDIF: |
| 755 | if (master->core->ver < 2) { |
| 756 | dev_err(dai->dev, "This FSI can not use SPDIF\n"); |
| 757 | return -EINVAL; |
| 758 | } |
| 759 | data = CR_SPDIF; |
| 760 | fsi->chan = 2; |
| 761 | fsi_spdif_clk_ctrl(fsi, 1); |
| 762 | fsi_reg_mask_set(fsi, OUT_SEL, 0x0010, 0x0010); |
| 763 | break; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 764 | default: |
| 765 | dev_err(dai->dev, "unknown format.\n"); |
| 766 | return -EINVAL; |
| 767 | } |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 768 | fsi_reg_write(fsi, reg, data); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 769 | |
Kuninori Morimoto | 10ea76c | 2010-03-23 11:47:54 +0900 | [diff] [blame] | 770 | /* irq clear */ |
| 771 | fsi_irq_disable(fsi, is_play); |
| 772 | fsi_irq_clear_status(fsi); |
| 773 | |
| 774 | /* fifo init */ |
Kuninori Morimoto | 4a942b4 | 2010-03-25 19:15:51 +0900 | [diff] [blame] | 775 | fsi_fifo_init(fsi, is_play, dai); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 776 | |
| 777 | return ret; |
| 778 | } |
| 779 | |
| 780 | static void fsi_dai_shutdown(struct snd_pcm_substream *substream, |
| 781 | struct snd_soc_dai *dai) |
| 782 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 783 | struct fsi_priv *fsi = fsi_get_priv(substream); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 784 | int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| 785 | |
| 786 | fsi_irq_disable(fsi, is_play); |
| 787 | fsi_clk_ctrl(fsi, 0); |
| 788 | |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 789 | pm_runtime_put_sync(dai->dev); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd, |
| 793 | struct snd_soc_dai *dai) |
| 794 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 795 | struct fsi_priv *fsi = fsi_get_priv(substream); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 796 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 797 | int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| 798 | int ret = 0; |
| 799 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 800 | switch (cmd) { |
| 801 | case SNDRV_PCM_TRIGGER_START: |
| 802 | fsi_stream_push(fsi, substream, |
| 803 | frames_to_bytes(runtime, runtime->buffer_size), |
| 804 | frames_to_bytes(runtime, runtime->period_size)); |
Kuninori Morimoto | 47fc9a0 | 2010-02-22 16:41:57 +0900 | [diff] [blame] | 805 | ret = is_play ? fsi_data_push(fsi, 1) : fsi_data_pop(fsi, 1); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 806 | break; |
| 807 | case SNDRV_PCM_TRIGGER_STOP: |
| 808 | fsi_irq_disable(fsi, is_play); |
| 809 | fsi_stream_pop(fsi); |
| 810 | break; |
| 811 | } |
| 812 | |
| 813 | return ret; |
| 814 | } |
| 815 | |
Kuninori Morimoto | ccad7b4 | 2010-07-13 12:13:14 +0900 | [diff] [blame] | 816 | static int fsi_dai_hw_params(struct snd_pcm_substream *substream, |
| 817 | struct snd_pcm_hw_params *params, |
| 818 | struct snd_soc_dai *dai) |
| 819 | { |
| 820 | struct fsi_priv *fsi = fsi_get_priv(substream); |
| 821 | struct fsi_master *master = fsi_get_master(fsi); |
| 822 | int (*set_rate)(int is_porta, int rate) = master->info->set_rate; |
| 823 | int fsi_ver = master->core->ver; |
| 824 | int is_play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); |
| 825 | int ret; |
| 826 | |
| 827 | /* if slave mode, set_rate is not needed */ |
| 828 | if (!fsi_is_master_mode(fsi, is_play)) |
| 829 | return 0; |
| 830 | |
| 831 | /* it is error if no set_rate */ |
| 832 | if (!set_rate) |
| 833 | return -EIO; |
| 834 | |
Kuninori Morimoto | ccad7b4 | 2010-07-13 12:13:14 +0900 | [diff] [blame] | 835 | ret = set_rate(fsi_is_port_a(fsi), params_rate(params)); |
| 836 | if (ret > 0) { |
| 837 | u32 data = 0; |
| 838 | |
| 839 | switch (ret & SH_FSI_ACKMD_MASK) { |
| 840 | default: |
| 841 | /* FALL THROUGH */ |
| 842 | case SH_FSI_ACKMD_512: |
| 843 | data |= (0x0 << 12); |
| 844 | break; |
| 845 | case SH_FSI_ACKMD_256: |
| 846 | data |= (0x1 << 12); |
| 847 | break; |
| 848 | case SH_FSI_ACKMD_128: |
| 849 | data |= (0x2 << 12); |
| 850 | break; |
| 851 | case SH_FSI_ACKMD_64: |
| 852 | data |= (0x3 << 12); |
| 853 | break; |
| 854 | case SH_FSI_ACKMD_32: |
| 855 | if (fsi_ver < 2) |
| 856 | dev_err(dai->dev, "unsupported ACKMD\n"); |
| 857 | else |
| 858 | data |= (0x4 << 12); |
| 859 | break; |
| 860 | } |
| 861 | |
| 862 | switch (ret & SH_FSI_BPFMD_MASK) { |
| 863 | default: |
| 864 | /* FALL THROUGH */ |
| 865 | case SH_FSI_BPFMD_32: |
| 866 | data |= (0x0 << 8); |
| 867 | break; |
| 868 | case SH_FSI_BPFMD_64: |
| 869 | data |= (0x1 << 8); |
| 870 | break; |
| 871 | case SH_FSI_BPFMD_128: |
| 872 | data |= (0x2 << 8); |
| 873 | break; |
| 874 | case SH_FSI_BPFMD_256: |
| 875 | data |= (0x3 << 8); |
| 876 | break; |
| 877 | case SH_FSI_BPFMD_512: |
| 878 | data |= (0x4 << 8); |
| 879 | break; |
| 880 | case SH_FSI_BPFMD_16: |
| 881 | if (fsi_ver < 2) |
| 882 | dev_err(dai->dev, "unsupported ACKMD\n"); |
| 883 | else |
| 884 | data |= (0x7 << 8); |
| 885 | break; |
| 886 | } |
| 887 | |
| 888 | fsi_reg_mask_set(fsi, CKG1, (ACKMD_MASK | BPFMD_MASK) , data); |
| 889 | udelay(10); |
| 890 | fsi_clk_ctrl(fsi, 1); |
| 891 | ret = 0; |
| 892 | } |
Kuninori Morimoto | ccad7b4 | 2010-07-13 12:13:14 +0900 | [diff] [blame] | 893 | |
| 894 | return ret; |
| 895 | |
| 896 | } |
| 897 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 898 | static struct snd_soc_dai_ops fsi_dai_ops = { |
| 899 | .startup = fsi_dai_startup, |
| 900 | .shutdown = fsi_dai_shutdown, |
| 901 | .trigger = fsi_dai_trigger, |
Kuninori Morimoto | ccad7b4 | 2010-07-13 12:13:14 +0900 | [diff] [blame] | 902 | .hw_params = fsi_dai_hw_params, |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 903 | }; |
| 904 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 905 | /* |
| 906 | * pcm ops |
| 907 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 908 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 909 | static struct snd_pcm_hardware fsi_pcm_hardware = { |
| 910 | .info = SNDRV_PCM_INFO_INTERLEAVED | |
| 911 | SNDRV_PCM_INFO_MMAP | |
| 912 | SNDRV_PCM_INFO_MMAP_VALID | |
| 913 | SNDRV_PCM_INFO_PAUSE, |
| 914 | .formats = FSI_FMTS, |
| 915 | .rates = FSI_RATES, |
| 916 | .rate_min = 8000, |
| 917 | .rate_max = 192000, |
| 918 | .channels_min = 1, |
| 919 | .channels_max = 2, |
| 920 | .buffer_bytes_max = 64 * 1024, |
| 921 | .period_bytes_min = 32, |
| 922 | .period_bytes_max = 8192, |
| 923 | .periods_min = 1, |
| 924 | .periods_max = 32, |
| 925 | .fifo_size = 256, |
| 926 | }; |
| 927 | |
| 928 | static int fsi_pcm_open(struct snd_pcm_substream *substream) |
| 929 | { |
| 930 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 931 | int ret = 0; |
| 932 | |
| 933 | snd_soc_set_runtime_hwparams(substream, &fsi_pcm_hardware); |
| 934 | |
| 935 | ret = snd_pcm_hw_constraint_integer(runtime, |
| 936 | SNDRV_PCM_HW_PARAM_PERIODS); |
| 937 | |
| 938 | return ret; |
| 939 | } |
| 940 | |
| 941 | static int fsi_hw_params(struct snd_pcm_substream *substream, |
| 942 | struct snd_pcm_hw_params *hw_params) |
| 943 | { |
| 944 | return snd_pcm_lib_malloc_pages(substream, |
| 945 | params_buffer_bytes(hw_params)); |
| 946 | } |
| 947 | |
| 948 | static int fsi_hw_free(struct snd_pcm_substream *substream) |
| 949 | { |
| 950 | return snd_pcm_lib_free_pages(substream); |
| 951 | } |
| 952 | |
| 953 | static snd_pcm_uframes_t fsi_pointer(struct snd_pcm_substream *substream) |
| 954 | { |
| 955 | struct snd_pcm_runtime *runtime = substream->runtime; |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 956 | struct fsi_priv *fsi = fsi_get_priv(substream); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 957 | long location; |
| 958 | |
Kuninori Morimoto | 9ddc9aa | 2009-10-30 12:02:39 +0900 | [diff] [blame] | 959 | location = (fsi->byte_offset - 1); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 960 | if (location < 0) |
| 961 | location = 0; |
| 962 | |
| 963 | return bytes_to_frames(runtime, location); |
| 964 | } |
| 965 | |
| 966 | static struct snd_pcm_ops fsi_pcm_ops = { |
| 967 | .open = fsi_pcm_open, |
| 968 | .ioctl = snd_pcm_lib_ioctl, |
| 969 | .hw_params = fsi_hw_params, |
| 970 | .hw_free = fsi_hw_free, |
| 971 | .pointer = fsi_pointer, |
| 972 | }; |
| 973 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 974 | /* |
| 975 | * snd_soc_platform |
| 976 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 977 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 978 | #define PREALLOC_BUFFER (32 * 1024) |
| 979 | #define PREALLOC_BUFFER_MAX (32 * 1024) |
| 980 | |
| 981 | static void fsi_pcm_free(struct snd_pcm *pcm) |
| 982 | { |
| 983 | snd_pcm_lib_preallocate_free_for_all(pcm); |
| 984 | } |
| 985 | |
| 986 | static int fsi_pcm_new(struct snd_card *card, |
| 987 | struct snd_soc_dai *dai, |
| 988 | struct snd_pcm *pcm) |
| 989 | { |
| 990 | /* |
| 991 | * dont use SNDRV_DMA_TYPE_DEV, since it will oops the SH kernel |
| 992 | * in MMAP mode (i.e. aplay -M) |
| 993 | */ |
| 994 | return snd_pcm_lib_preallocate_pages_for_all( |
| 995 | pcm, |
| 996 | SNDRV_DMA_TYPE_CONTINUOUS, |
| 997 | snd_dma_continuous_data(GFP_KERNEL), |
| 998 | PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); |
| 999 | } |
| 1000 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 1001 | /* |
| 1002 | * alsa struct |
| 1003 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1004 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1005 | static struct snd_soc_dai_driver fsi_soc_dai[] = { |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1006 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1007 | .name = "fsia-dai", |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1008 | .playback = { |
| 1009 | .rates = FSI_RATES, |
| 1010 | .formats = FSI_FMTS, |
| 1011 | .channels_min = 1, |
| 1012 | .channels_max = 8, |
| 1013 | }, |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 1014 | .capture = { |
| 1015 | .rates = FSI_RATES, |
| 1016 | .formats = FSI_FMTS, |
| 1017 | .channels_min = 1, |
| 1018 | .channels_max = 8, |
| 1019 | }, |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1020 | .ops = &fsi_dai_ops, |
| 1021 | }, |
| 1022 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1023 | .name = "fsib-dai", |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1024 | .playback = { |
| 1025 | .rates = FSI_RATES, |
| 1026 | .formats = FSI_FMTS, |
| 1027 | .channels_min = 1, |
| 1028 | .channels_max = 8, |
| 1029 | }, |
Kuninori Morimoto | 07102f3 | 2009-10-30 12:02:44 +0900 | [diff] [blame] | 1030 | .capture = { |
| 1031 | .rates = FSI_RATES, |
| 1032 | .formats = FSI_FMTS, |
| 1033 | .channels_min = 1, |
| 1034 | .channels_max = 8, |
| 1035 | }, |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1036 | .ops = &fsi_dai_ops, |
| 1037 | }, |
| 1038 | }; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1039 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1040 | static struct snd_soc_platform_driver fsi_soc_platform = { |
| 1041 | .ops = &fsi_pcm_ops, |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1042 | .pcm_new = fsi_pcm_new, |
| 1043 | .pcm_free = fsi_pcm_free, |
| 1044 | }; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1045 | |
Kuninori Morimoto | c8fe257 | 2010-09-17 13:48:17 +0900 | [diff] [blame^] | 1046 | /* |
| 1047 | * platform function |
| 1048 | */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1049 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1050 | static int fsi_probe(struct platform_device *pdev) |
| 1051 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 1052 | struct fsi_master *master; |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1053 | const struct platform_device_id *id_entry; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1054 | struct resource *res; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1055 | unsigned int irq; |
| 1056 | int ret; |
| 1057 | |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1058 | id_entry = pdev->id_entry; |
| 1059 | if (!id_entry) { |
| 1060 | dev_err(&pdev->dev, "unknown fsi device\n"); |
| 1061 | return -ENODEV; |
| 1062 | } |
| 1063 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1064 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1065 | irq = platform_get_irq(pdev, 0); |
Uwe Kleine-König | b6aa179 | 2009-12-16 17:10:09 +0100 | [diff] [blame] | 1066 | if (!res || (int)irq <= 0) { |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1067 | dev_err(&pdev->dev, "Not enough FSI platform resources.\n"); |
| 1068 | ret = -ENODEV; |
| 1069 | goto exit; |
| 1070 | } |
| 1071 | |
| 1072 | master = kzalloc(sizeof(*master), GFP_KERNEL); |
| 1073 | if (!master) { |
| 1074 | dev_err(&pdev->dev, "Could not allocate master\n"); |
| 1075 | ret = -ENOMEM; |
| 1076 | goto exit; |
| 1077 | } |
| 1078 | |
| 1079 | master->base = ioremap_nocache(res->start, resource_size(res)); |
| 1080 | if (!master->base) { |
| 1081 | ret = -ENXIO; |
| 1082 | dev_err(&pdev->dev, "Unable to ioremap FSI registers.\n"); |
| 1083 | goto exit_kfree; |
| 1084 | } |
| 1085 | |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 1086 | /* master setting */ |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1087 | master->irq = irq; |
| 1088 | master->info = pdev->dev.platform_data; |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 1089 | master->core = (struct fsi_core *)id_entry->driver_data; |
Kuninori Morimoto | 8fc176d | 2010-01-28 13:46:16 +0900 | [diff] [blame] | 1090 | spin_lock_init(&master->lock); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1091 | |
Kuninori Morimoto | 3bc2807 | 2010-07-29 16:48:32 +0900 | [diff] [blame] | 1092 | /* FSI A setting */ |
| 1093 | master->fsia.base = master->base; |
| 1094 | master->fsia.master = master; |
| 1095 | master->fsia.mst_ctrl = A_MST_CTLR; |
| 1096 | |
| 1097 | /* FSI B setting */ |
| 1098 | master->fsib.base = master->base + 0x40; |
| 1099 | master->fsib.master = master; |
| 1100 | master->fsib.mst_ctrl = B_MST_CTLR; |
| 1101 | |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 1102 | pm_runtime_enable(&pdev->dev); |
| 1103 | pm_runtime_resume(&pdev->dev); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1104 | dev_set_drvdata(&pdev->dev, master); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1105 | |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 1106 | fsi_soft_all_reset(master); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1107 | |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1108 | ret = request_irq(irq, &fsi_interrupt, IRQF_DISABLED, |
| 1109 | id_entry->name, master); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1110 | if (ret) { |
| 1111 | dev_err(&pdev->dev, "irq request err\n"); |
Kuninori Morimoto | 9ddc9aa | 2009-10-30 12:02:39 +0900 | [diff] [blame] | 1112 | goto exit_iounmap; |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1113 | } |
| 1114 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1115 | ret = snd_soc_register_platform(&pdev->dev, &fsi_soc_platform); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1116 | if (ret < 0) { |
| 1117 | dev_err(&pdev->dev, "cannot snd soc register\n"); |
| 1118 | goto exit_free_irq; |
| 1119 | } |
| 1120 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1121 | return snd_soc_register_dais(&pdev->dev, fsi_soc_dai, ARRAY_SIZE(fsi_soc_dai)); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1122 | |
| 1123 | exit_free_irq: |
| 1124 | free_irq(irq, master); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1125 | exit_iounmap: |
| 1126 | iounmap(master->base); |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 1127 | pm_runtime_disable(&pdev->dev); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1128 | exit_kfree: |
| 1129 | kfree(master); |
| 1130 | master = NULL; |
| 1131 | exit: |
| 1132 | return ret; |
| 1133 | } |
| 1134 | |
| 1135 | static int fsi_remove(struct platform_device *pdev) |
| 1136 | { |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 1137 | struct fsi_master *master; |
| 1138 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1139 | master = dev_get_drvdata(&pdev->dev); |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 1140 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1141 | snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(fsi_soc_dai)); |
| 1142 | snd_soc_unregister_platform(&pdev->dev); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1143 | |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 1144 | pm_runtime_disable(&pdev->dev); |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1145 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1146 | free_irq(master->irq, master); |
| 1147 | |
| 1148 | iounmap(master->base); |
| 1149 | kfree(master); |
Kuninori Morimoto | 71f6e06 | 2009-12-02 15:11:08 +0900 | [diff] [blame] | 1150 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1151 | return 0; |
| 1152 | } |
| 1153 | |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 1154 | static int fsi_runtime_nop(struct device *dev) |
| 1155 | { |
| 1156 | /* Runtime PM callback shared between ->runtime_suspend() |
| 1157 | * and ->runtime_resume(). Simply returns success. |
| 1158 | * |
| 1159 | * This driver re-initializes all registers after |
| 1160 | * pm_runtime_get_sync() anyway so there is no need |
| 1161 | * to save and restore registers here. |
| 1162 | */ |
| 1163 | return 0; |
| 1164 | } |
| 1165 | |
| 1166 | static struct dev_pm_ops fsi_pm_ops = { |
| 1167 | .runtime_suspend = fsi_runtime_nop, |
| 1168 | .runtime_resume = fsi_runtime_nop, |
| 1169 | }; |
| 1170 | |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 1171 | static struct fsi_core fsi1_core = { |
| 1172 | .ver = 1, |
| 1173 | |
| 1174 | /* Interrupt */ |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1175 | .int_st = INT_ST, |
| 1176 | .iemsk = IEMSK, |
| 1177 | .imsk = IMSK, |
| 1178 | }; |
| 1179 | |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 1180 | static struct fsi_core fsi2_core = { |
| 1181 | .ver = 2, |
| 1182 | |
| 1183 | /* Interrupt */ |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1184 | .int_st = CPU_INT_ST, |
| 1185 | .iemsk = CPU_IEMSK, |
| 1186 | .imsk = CPU_IMSK, |
| 1187 | }; |
| 1188 | |
| 1189 | static struct platform_device_id fsi_id_table[] = { |
Kuninori Morimoto | 73b92c1 | 2010-07-13 12:13:04 +0900 | [diff] [blame] | 1190 | { "sh_fsi", (kernel_ulong_t)&fsi1_core }, |
| 1191 | { "sh_fsi2", (kernel_ulong_t)&fsi2_core }, |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1192 | }; |
Dzianis Kahanovich | d85a6d7 | 2010-09-17 16:42:05 +0300 | [diff] [blame] | 1193 | MODULE_DEVICE_TABLE(platform, fsi_id_table); |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1194 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1195 | static struct platform_driver fsi_driver = { |
| 1196 | .driver = { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 1197 | .name = "fsi-pcm-audio", |
Kuninori Morimoto | 785d1c4 | 2009-11-30 20:24:48 +0900 | [diff] [blame] | 1198 | .pm = &fsi_pm_ops, |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1199 | }, |
| 1200 | .probe = fsi_probe, |
| 1201 | .remove = fsi_remove, |
Kuninori Morimoto | cc780d3 | 2010-03-25 19:15:53 +0900 | [diff] [blame] | 1202 | .id_table = fsi_id_table, |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1203 | }; |
| 1204 | |
| 1205 | static int __init fsi_mobile_init(void) |
| 1206 | { |
| 1207 | return platform_driver_register(&fsi_driver); |
| 1208 | } |
| 1209 | |
| 1210 | static void __exit fsi_mobile_exit(void) |
| 1211 | { |
| 1212 | platform_driver_unregister(&fsi_driver); |
| 1213 | } |
Dzianis Kahanovich | d85a6d7 | 2010-09-17 16:42:05 +0300 | [diff] [blame] | 1214 | |
Kuninori Morimoto | a4d7d55 | 2009-08-20 21:01:05 +0900 | [diff] [blame] | 1215 | module_init(fsi_mobile_init); |
| 1216 | module_exit(fsi_mobile_exit); |
| 1217 | |
| 1218 | MODULE_LICENSE("GPL"); |
| 1219 | MODULE_DESCRIPTION("SuperH onchip FSI audio driver"); |
| 1220 | MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>"); |