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Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001/*
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 Morimotoa4d7d552009-08-20 21:01:05 +090015#include <linux/delay.h>
Kuninori Morimoto785d1c42009-11-30 20:24:48 +090016#include <linux/pm_runtime.h>
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090017#include <linux/io.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090018#include <linux/slab.h>
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090019#include <sound/soc.h>
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090020#include <sound/sh_fsi.h>
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090021
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +090022/* PortA/PortB register */
23#define REG_DO_FMT 0x0000
24#define REG_DOFF_CTL 0x0004
25#define REG_DOFF_ST 0x0008
26#define REG_DI_FMT 0x000C
27#define REG_DIFF_CTL 0x0010
28#define REG_DIFF_ST 0x0014
29#define REG_CKG1 0x0018
30#define REG_CKG2 0x001C
31#define REG_DIDT 0x0020
32#define REG_DODT 0x0024
33#define REG_MUTE_ST 0x0028
34#define REG_OUT_SEL 0x0030
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090035
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +090036/* master register */
37#define MST_CLK_RST 0x0210
38#define MST_SOFT_RST 0x0214
39#define MST_FIFO_SZ 0x0218
40
41/* core register (depend on FSI version) */
Kuninori Morimoto3bc28072010-07-29 16:48:32 +090042#define A_MST_CTLR 0x0180
43#define B_MST_CTLR 0x01A0
Kuninori Morimotocc780d32010-03-25 19:15:53 +090044#define CPU_INT_ST 0x01F4
45#define CPU_IEMSK 0x01F8
46#define CPU_IMSK 0x01FC
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090047#define INT_ST 0x0200
48#define IEMSK 0x0204
49#define IMSK 0x0208
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090050
51/* DO_FMT */
52/* DI_FMT */
Kuninori Morimotof7d711e2010-12-03 17:36:24 +090053#define CR_BWS_24 (0x0 << 20) /* FSI2 */
54#define CR_BWS_16 (0x1 << 20) /* FSI2 */
55#define CR_BWS_20 (0x2 << 20) /* FSI2 */
56
57#define CR_DTMD_PCM (0x0 << 8) /* FSI2 */
58#define CR_DTMD_SPDIF_PCM (0x1 << 8) /* FSI2 */
59#define CR_DTMD_SPDIF_STREAM (0x2 << 8) /* FSI2 */
60
Kuninori Morimotoa7ffb522010-07-13 12:13:00 +090061#define CR_MONO (0x0 << 4)
62#define CR_MONO_D (0x1 << 4)
63#define CR_PCM (0x2 << 4)
64#define CR_I2S (0x3 << 4)
65#define CR_TDM (0x4 << 4)
66#define CR_TDM_D (0x5 << 4)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090067
68/* DOFF_CTL */
69/* DIFF_CTL */
70#define IRQ_HALF 0x00100000
71#define FIFO_CLR 0x00000001
72
73/* DOFF_ST */
74#define ERR_OVER 0x00000010
75#define ERR_UNDER 0x00000001
Kuninori Morimoto59c3b002009-12-28 14:09:16 +090076#define ST_ERR (ERR_OVER | ERR_UNDER)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090077
Kuninori Morimotoccad7b42010-07-13 12:13:14 +090078/* CKG1 */
79#define ACKMD_MASK 0x00007000
80#define BPFMD_MASK 0x00000700
Kuninori Morimoto4d805f72011-01-20 11:46:02 +090081#define DIMD (1 << 4)
82#define DOMD (1 << 0)
Kuninori Morimotoccad7b42010-07-13 12:13:14 +090083
Kuninori Morimoto3bc28072010-07-29 16:48:32 +090084/* A/B MST_CTLR */
85#define BP (1 << 4) /* Fix the signal of Biphase output */
86#define SE (1 << 0) /* Fix the master clock */
87
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090088/* CLK_RST */
Kuninori Morimoto1f5e2a32011-04-21 10:33:52 +090089#define CRB (1 << 4)
90#define CRA (1 << 0)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090091
Kuninori Morimotocf6edd02010-10-12 11:40:53 +090092/* IO SHIFT / MACRO */
93#define BI_SHIFT 12
94#define BO_SHIFT 8
95#define AI_SHIFT 4
96#define AO_SHIFT 0
97#define AB_IO(param, shift) (param << shift)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +090098
Kuninori Morimotofeb58cf2010-03-24 15:27:24 +090099/* SOFT_RST */
100#define PBSR (1 << 12) /* Port B Software Reset */
101#define PASR (1 << 8) /* Port A Software Reset */
102#define IR (1 << 4) /* Interrupt Reset */
103#define FSISR (1 << 0) /* Software Reset */
104
Kuninori Morimotof7d711e2010-12-03 17:36:24 +0900105/* OUT_SEL (FSI2) */
106#define DMMD (1 << 4) /* SPDIF output timing 0: Biphase only */
107 /* 1: Biphase and serial */
108
Kuninori Morimoto4a942b42010-03-25 19:15:51 +0900109/* FIFO_SZ */
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900110#define FIFO_SZ_MASK 0x7
Kuninori Morimoto4a942b42010-03-25 19:15:51 +0900111
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900112#define FSI_RATES SNDRV_PCM_RATE_8000_96000
113
114#define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
115
Kuninori Morimotod7c57622011-01-24 10:42:33 +0900116typedef int (*set_rate_func)(struct device *dev, int is_porta, int rate, int enable);
117
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900118/*
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900119 * FSI driver use below type name for variable
120 *
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900121 * xxx_num : number of data
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900122 * xxx_pos : position of data
123 * xxx_capa : capacity of data
124 */
125
126/*
127 * period/frame/sample image
128 *
129 * ex) PCM (2ch)
130 *
131 * period pos period pos
132 * [n] [n + 1]
133 * |<-------------------- period--------------------->|
134 * ==|============================================ ... =|==
135 * | |
136 * ||<----- frame ----->|<------ frame ----->| ... |
137 * |+--------------------+--------------------+- ... |
138 * ||[ sample ][ sample ]|[ sample ][ sample ]| ... |
139 * |+--------------------+--------------------+- ... |
140 * ==|============================================ ... =|==
141 */
142
143/*
144 * FSI FIFO image
145 *
146 * | |
147 * | |
148 * | [ sample ] |
149 * | [ sample ] |
150 * | [ sample ] |
151 * | [ sample ] |
152 * --> go to codecs
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900153 */
154
155/*
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900156 * struct
157 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900158
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900159struct fsi_stream {
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900160 struct snd_pcm_substream *substream;
161
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900162 int fifo_sample_capa; /* sample capacity of FSI FIFO */
163 int buff_sample_capa; /* sample capacity of ALSA buffer */
164 int buff_sample_pos; /* sample position of ALSA buffer */
165 int period_samples; /* sample number / 1 period */
166 int period_pos; /* current period position */
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900167
168 int uerr_num;
169 int oerr_num;
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900170};
171
172struct fsi_priv {
173 void __iomem *base;
174 struct fsi_master *master;
175
176 struct fsi_stream playback;
177 struct fsi_stream capture;
Kuninori Morimoto3bc28072010-07-29 16:48:32 +0900178
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +0900179 u32 do_fmt;
180 u32 di_fmt;
181
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +0900182 int chan_num:16;
183 int clk_master:1;
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +0900184 int spdif:1;
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +0900185
Kuninori Morimotod4bc99b2010-11-24 02:44:06 +0000186 long rate;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900187};
188
Kuninori Morimoto73b92c12010-07-13 12:13:04 +0900189struct fsi_core {
190 int ver;
191
Kuninori Morimotocc780d32010-03-25 19:15:53 +0900192 u32 int_st;
193 u32 iemsk;
194 u32 imsk;
Kuninori Morimoto2b0e7302010-12-03 17:37:44 +0900195 u32 a_mclk;
196 u32 b_mclk;
Kuninori Morimotocc780d32010-03-25 19:15:53 +0900197};
198
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900199struct fsi_master {
200 void __iomem *base;
201 int irq;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900202 struct fsi_priv fsia;
203 struct fsi_priv fsib;
Kuninori Morimoto73b92c12010-07-13 12:13:04 +0900204 struct fsi_core *core;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900205 struct sh_fsi_platform_info *info;
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +0900206 spinlock_t lock;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900207};
208
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900209/*
210 * basic read write function
211 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900212
Guennadi Liakhovetski0f69d972010-02-03 17:37:23 +0100213static void __fsi_reg_write(u32 reg, u32 data)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900214{
215 /* valid data area is 24bit */
216 data &= 0x00ffffff;
217
Guennadi Liakhovetski0f69d972010-02-03 17:37:23 +0100218 __raw_writel(data, reg);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900219}
220
221static u32 __fsi_reg_read(u32 reg)
222{
Guennadi Liakhovetski0f69d972010-02-03 17:37:23 +0100223 return __raw_readl(reg);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900224}
225
Guennadi Liakhovetski0f69d972010-02-03 17:37:23 +0100226static void __fsi_reg_mask_set(u32 reg, u32 mask, u32 data)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900227{
228 u32 val = __fsi_reg_read(reg);
229
230 val &= ~mask;
231 val |= data & mask;
232
Guennadi Liakhovetski0f69d972010-02-03 17:37:23 +0100233 __fsi_reg_write(reg, val);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900234}
235
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +0900236#define fsi_reg_write(p, r, d)\
237 __fsi_reg_write((u32)(p->base + REG_##r), d)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900238
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +0900239#define fsi_reg_read(p, r)\
240 __fsi_reg_read((u32)(p->base + REG_##r))
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900241
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +0900242#define fsi_reg_mask_set(p, r, m, d)\
243 __fsi_reg_mask_set((u32)(p->base + REG_##r), m, d)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900244
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900245#define fsi_master_read(p, r) _fsi_master_read(p, MST_##r)
246#define fsi_core_read(p, r) _fsi_master_read(p, p->core->r)
247static u32 _fsi_master_read(struct fsi_master *master, u32 reg)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900248{
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +0900249 u32 ret;
250 unsigned long flags;
251
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +0900252 spin_lock_irqsave(&master->lock, flags);
253 ret = __fsi_reg_read((u32)(master->base + reg));
254 spin_unlock_irqrestore(&master->lock, flags);
255
256 return ret;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900257}
258
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900259#define fsi_master_mask_set(p, r, m, d) _fsi_master_mask_set(p, MST_##r, m, d)
260#define fsi_core_mask_set(p, r, m, d) _fsi_master_mask_set(p, p->core->r, m, d)
261static void _fsi_master_mask_set(struct fsi_master *master,
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900262 u32 reg, u32 mask, u32 data)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900263{
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +0900264 unsigned long flags;
265
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +0900266 spin_lock_irqsave(&master->lock, flags);
Guennadi Liakhovetski0f69d972010-02-03 17:37:23 +0100267 __fsi_reg_mask_set((u32)(master->base + reg), mask, data);
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +0900268 spin_unlock_irqrestore(&master->lock, flags);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900269}
270
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900271/*
272 * basic function
273 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900274
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900275static struct fsi_master *fsi_get_master(struct fsi_priv *fsi)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900276{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900277 return fsi->master;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900278}
279
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +0900280static int fsi_is_clk_master(struct fsi_priv *fsi)
281{
282 return fsi->clk_master;
283}
284
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900285static int fsi_is_port_a(struct fsi_priv *fsi)
286{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900287 return fsi->master->base == fsi->base;
288}
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900289
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +0900290static int fsi_is_spdif(struct fsi_priv *fsi)
291{
292 return fsi->spdif;
293}
294
Kuninori Morimoto142e8172009-12-28 14:09:11 +0900295static struct snd_soc_dai *fsi_get_dai(struct snd_pcm_substream *substream)
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900296{
297 struct snd_soc_pcm_runtime *rtd = substream->private_data;
Kuninori Morimoto142e8172009-12-28 14:09:11 +0900298
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000299 return rtd->cpu_dai;
Kuninori Morimoto142e8172009-12-28 14:09:11 +0900300}
301
Kuninori Morimoto0d032c12011-01-20 11:45:51 +0900302static struct fsi_priv *fsi_get_priv_frm_dai(struct snd_soc_dai *dai)
Kuninori Morimoto142e8172009-12-28 14:09:11 +0900303{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000304 struct fsi_master *master = snd_soc_dai_get_drvdata(dai);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900305
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000306 if (dai->id == 0)
307 return &master->fsia;
308 else
309 return &master->fsib;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900310}
311
Kuninori Morimoto0d032c12011-01-20 11:45:51 +0900312static struct fsi_priv *fsi_get_priv(struct snd_pcm_substream *substream)
313{
314 return fsi_get_priv_frm_dai(fsi_get_dai(substream));
315}
316
Kuninori Morimotod7c57622011-01-24 10:42:33 +0900317static set_rate_func fsi_get_info_set_rate(struct fsi_master *master)
318{
319 if (!master->info)
320 return NULL;
321
322 return master->info->set_rate;
323}
324
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900325static u32 fsi_get_info_flags(struct fsi_priv *fsi)
326{
327 int is_porta = fsi_is_port_a(fsi);
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900328 struct fsi_master *master = fsi_get_master(fsi);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900329
Kuninori Morimotod7c57622011-01-24 10:42:33 +0900330 if (!master->info)
331 return 0;
332
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900333 return is_porta ? master->info->porta_flags :
334 master->info->portb_flags;
335}
336
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900337static inline int fsi_stream_is_play(int stream)
338{
339 return stream == SNDRV_PCM_STREAM_PLAYBACK;
340}
341
Kuninori Morimoto00545782010-10-12 18:30:14 +0900342static inline int fsi_is_play(struct snd_pcm_substream *substream)
343{
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900344 return fsi_stream_is_play(substream->stream);
345}
346
347static inline struct fsi_stream *fsi_get_stream(struct fsi_priv *fsi,
348 int is_play)
349{
350 return is_play ? &fsi->playback : &fsi->capture;
Kuninori Morimoto00545782010-10-12 18:30:14 +0900351}
352
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900353static u32 fsi_get_port_shift(struct fsi_priv *fsi, int is_play)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900354{
355 int is_porta = fsi_is_port_a(fsi);
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900356 u32 shift;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900357
358 if (is_porta)
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900359 shift = is_play ? AO_SHIFT : AI_SHIFT;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900360 else
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900361 shift = is_play ? BO_SHIFT : BI_SHIFT;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900362
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900363 return shift;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900364}
365
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900366static int fsi_frame2sample(struct fsi_priv *fsi, int frames)
367{
368 return frames * fsi->chan_num;
369}
370
371static int fsi_sample2frame(struct fsi_priv *fsi, int samples)
372{
373 return samples / fsi->chan_num;
374}
375
Kuninori Morimotocda828c2011-05-23 20:46:35 +0900376static int fsi_stream_is_working(struct fsi_priv *fsi,
377 int is_play)
378{
379 struct fsi_stream *io = fsi_get_stream(fsi, is_play);
380 struct fsi_master *master = fsi_get_master(fsi);
381 unsigned long flags;
382 int ret;
383
384 spin_lock_irqsave(&master->lock, flags);
385 ret = !!io->substream;
386 spin_unlock_irqrestore(&master->lock, flags);
387
388 return ret;
389}
390
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900391static void fsi_stream_push(struct fsi_priv *fsi,
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900392 int is_play,
Kuninori Morimoto0ffe2962011-05-23 20:45:57 +0900393 struct snd_pcm_substream *substream)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900394{
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900395 struct fsi_stream *io = fsi_get_stream(fsi, is_play);
Kuninori Morimoto0ffe2962011-05-23 20:45:57 +0900396 struct snd_pcm_runtime *runtime = substream->runtime;
Kuninori Morimoto2da65892011-05-23 20:46:13 +0900397 struct fsi_master *master = fsi_get_master(fsi);
398 unsigned long flags;
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900399
Kuninori Morimoto2da65892011-05-23 20:46:13 +0900400 spin_lock_irqsave(&master->lock, flags);
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900401 io->substream = substream;
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900402 io->buff_sample_capa = fsi_frame2sample(fsi, runtime->buffer_size);
403 io->buff_sample_pos = 0;
404 io->period_samples = fsi_frame2sample(fsi, runtime->period_size);
405 io->period_pos = 0;
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900406 io->oerr_num = -1; /* ignore 1st err */
407 io->uerr_num = -1; /* ignore 1st err */
Kuninori Morimoto2da65892011-05-23 20:46:13 +0900408 spin_unlock_irqrestore(&master->lock, flags);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900409}
410
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900411static void fsi_stream_pop(struct fsi_priv *fsi, int is_play)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900412{
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900413 struct fsi_stream *io = fsi_get_stream(fsi, is_play);
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900414 struct snd_soc_dai *dai = fsi_get_dai(io->substream);
Kuninori Morimoto2da65892011-05-23 20:46:13 +0900415 struct fsi_master *master = fsi_get_master(fsi);
416 unsigned long flags;
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900417
Kuninori Morimoto2da65892011-05-23 20:46:13 +0900418 spin_lock_irqsave(&master->lock, flags);
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900419
420 if (io->oerr_num > 0)
421 dev_err(dai->dev, "over_run = %d\n", io->oerr_num);
422
423 if (io->uerr_num > 0)
424 dev_err(dai->dev, "under_run = %d\n", io->uerr_num);
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900425
426 io->substream = NULL;
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900427 io->buff_sample_capa = 0;
428 io->buff_sample_pos = 0;
429 io->period_samples = 0;
430 io->period_pos = 0;
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900431 io->oerr_num = 0;
432 io->uerr_num = 0;
Kuninori Morimoto2da65892011-05-23 20:46:13 +0900433 spin_unlock_irqrestore(&master->lock, flags);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900434}
435
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900436static int fsi_get_current_fifo_samples(struct fsi_priv *fsi, int is_play)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900437{
438 u32 status;
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900439 int frames;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900440
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +0900441 status = is_play ?
442 fsi_reg_read(fsi, DOFF_ST) :
443 fsi_reg_read(fsi, DIFF_ST);
444
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900445 frames = 0x1ff & (status >> 8);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900446
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900447 return fsi_frame2sample(fsi, frames);
Kuninori Morimotocca1b232010-10-12 11:39:25 +0900448}
449
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900450static void fsi_count_fifo_err(struct fsi_priv *fsi)
451{
452 u32 ostatus = fsi_reg_read(fsi, DOFF_ST);
453 u32 istatus = fsi_reg_read(fsi, DIFF_ST);
454
455 if (ostatus & ERR_OVER)
456 fsi->playback.oerr_num++;
457
458 if (ostatus & ERR_UNDER)
459 fsi->playback.uerr_num++;
460
461 if (istatus & ERR_OVER)
462 fsi->capture.oerr_num++;
463
464 if (istatus & ERR_UNDER)
465 fsi->capture.uerr_num++;
466
467 fsi_reg_write(fsi, DOFF_ST, 0);
468 fsi_reg_write(fsi, DIFF_ST, 0);
469}
470
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900471/*
472 * dma function
473 */
474
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900475static u8 *fsi_dma_get_area(struct fsi_priv *fsi, int stream)
Kuninori Morimotoc79eab32010-09-17 13:48:05 +0900476{
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900477 int is_play = fsi_stream_is_play(stream);
478 struct fsi_stream *io = fsi_get_stream(fsi, is_play);
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900479 struct snd_pcm_runtime *runtime = io->substream->runtime;
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900480
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900481 return runtime->dma_area +
482 samples_to_bytes(runtime, io->buff_sample_pos);
Kuninori Morimotoc79eab32010-09-17 13:48:05 +0900483}
484
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900485static void fsi_dma_soft_push16(struct fsi_priv *fsi, int num)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900486{
487 u16 *start;
488 int i;
489
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900490 start = (u16 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_PLAYBACK);
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900491
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900492 for (i = 0; i < num; i++)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900493 fsi_reg_write(fsi, DODT, ((u32)*(start + i) << 8));
494}
495
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900496static void fsi_dma_soft_pop16(struct fsi_priv *fsi, int num)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900497{
498 u16 *start;
499 int i;
500
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900501 start = (u16 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_CAPTURE);
502
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900503
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900504 for (i = 0; i < num; i++)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900505 *(start + i) = (u16)(fsi_reg_read(fsi, DIDT) >> 8);
506}
507
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900508static void fsi_dma_soft_push32(struct fsi_priv *fsi, int num)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900509{
510 u32 *start;
511 int i;
512
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900513 start = (u32 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_PLAYBACK);
514
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900515
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900516 for (i = 0; i < num; i++)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900517 fsi_reg_write(fsi, DODT, *(start + i));
518}
519
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900520static void fsi_dma_soft_pop32(struct fsi_priv *fsi, int num)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900521{
522 u32 *start;
523 int i;
524
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900525 start = (u32 *)fsi_dma_get_area(fsi, SNDRV_PCM_STREAM_CAPTURE);
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900526
Kuninori Morimoto5bfb9ad2010-09-17 13:48:45 +0900527 for (i = 0; i < num; i++)
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900528 *(start + i) = fsi_reg_read(fsi, DIDT);
529}
530
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900531/*
532 * irq function
533 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900534
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900535static void fsi_irq_enable(struct fsi_priv *fsi, int is_play)
536{
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900537 u32 data = AB_IO(1, fsi_get_port_shift(fsi, is_play));
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900538 struct fsi_master *master = fsi_get_master(fsi);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900539
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900540 fsi_core_mask_set(master, imsk, data, data);
541 fsi_core_mask_set(master, iemsk, data, data);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900542}
543
544static void fsi_irq_disable(struct fsi_priv *fsi, int is_play)
545{
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900546 u32 data = AB_IO(1, fsi_get_port_shift(fsi, is_play));
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900547 struct fsi_master *master = fsi_get_master(fsi);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900548
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900549 fsi_core_mask_set(master, imsk, data, 0);
550 fsi_core_mask_set(master, iemsk, data, 0);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900551}
552
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900553static u32 fsi_irq_get_status(struct fsi_master *master)
554{
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900555 return fsi_core_read(master, int_st);
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900556}
557
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900558static void fsi_irq_clear_status(struct fsi_priv *fsi)
559{
560 u32 data = 0;
561 struct fsi_master *master = fsi_get_master(fsi);
562
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900563 data |= AB_IO(1, fsi_get_port_shift(fsi, 0));
564 data |= AB_IO(1, fsi_get_port_shift(fsi, 1));
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900565
566 /* clear interrupt factor */
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900567 fsi_core_mask_set(master, int_st, data, 0);
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900568}
569
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900570/*
571 * SPDIF master clock function
572 *
573 * These functions are used later FSI2
574 */
Kuninori Morimoto3bc28072010-07-29 16:48:32 +0900575static void fsi_spdif_clk_ctrl(struct fsi_priv *fsi, int enable)
576{
577 struct fsi_master *master = fsi_get_master(fsi);
Kuninori Morimoto2b0e7302010-12-03 17:37:44 +0900578 u32 mask, val;
Kuninori Morimoto3bc28072010-07-29 16:48:32 +0900579
580 if (master->core->ver < 2) {
581 pr_err("fsi: register access err (%s)\n", __func__);
582 return;
583 }
584
Kuninori Morimoto2b0e7302010-12-03 17:37:44 +0900585 mask = BP | SE;
586 val = enable ? mask : 0;
587
588 fsi_is_port_a(fsi) ?
Kuninori Morimoto43fa95c2010-12-03 17:38:03 +0900589 fsi_core_mask_set(master, a_mclk, mask, val) :
590 fsi_core_mask_set(master, b_mclk, mask, val);
Kuninori Morimoto3bc28072010-07-29 16:48:32 +0900591}
592
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900593/*
Kuninori Morimoto1f5e2a32011-04-21 10:33:52 +0900594 * clock function
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900595 */
Kuninori Morimoto4f56cde2011-05-23 20:46:18 +0900596static int fsi_set_master_clk(struct device *dev, struct fsi_priv *fsi,
597 long rate, int enable)
598{
599 struct fsi_master *master = fsi_get_master(fsi);
600 set_rate_func set_rate = fsi_get_info_set_rate(master);
601 int fsi_ver = master->core->ver;
602 int ret;
603
604 ret = set_rate(dev, fsi_is_port_a(fsi), rate, enable);
605 if (ret < 0) /* error */
606 return ret;
607
608 if (!enable)
609 return 0;
610
611 if (ret > 0) {
612 u32 data = 0;
613
614 switch (ret & SH_FSI_ACKMD_MASK) {
615 default:
616 /* FALL THROUGH */
617 case SH_FSI_ACKMD_512:
618 data |= (0x0 << 12);
619 break;
620 case SH_FSI_ACKMD_256:
621 data |= (0x1 << 12);
622 break;
623 case SH_FSI_ACKMD_128:
624 data |= (0x2 << 12);
625 break;
626 case SH_FSI_ACKMD_64:
627 data |= (0x3 << 12);
628 break;
629 case SH_FSI_ACKMD_32:
630 if (fsi_ver < 2)
631 dev_err(dev, "unsupported ACKMD\n");
632 else
633 data |= (0x4 << 12);
634 break;
635 }
636
637 switch (ret & SH_FSI_BPFMD_MASK) {
638 default:
639 /* FALL THROUGH */
640 case SH_FSI_BPFMD_32:
641 data |= (0x0 << 8);
642 break;
643 case SH_FSI_BPFMD_64:
644 data |= (0x1 << 8);
645 break;
646 case SH_FSI_BPFMD_128:
647 data |= (0x2 << 8);
648 break;
649 case SH_FSI_BPFMD_256:
650 data |= (0x3 << 8);
651 break;
652 case SH_FSI_BPFMD_512:
653 data |= (0x4 << 8);
654 break;
655 case SH_FSI_BPFMD_16:
656 if (fsi_ver < 2)
657 dev_err(dev, "unsupported ACKMD\n");
658 else
659 data |= (0x7 << 8);
660 break;
661 }
662
663 fsi_reg_mask_set(fsi, CKG1, (ACKMD_MASK | BPFMD_MASK) , data);
664 udelay(10);
665 ret = 0;
666 }
667
668 return ret;
Kuninori Morimoto4f56cde2011-05-23 20:46:18 +0900669}
670
Kuninori Morimoto1ddddd32011-05-23 20:46:23 +0900671#define fsi_port_start(f, i) __fsi_port_clk_ctrl(f, i, 1)
672#define fsi_port_stop(f, i) __fsi_port_clk_ctrl(f, i, 0)
673static void __fsi_port_clk_ctrl(struct fsi_priv *fsi, int is_play, int enable)
Kuninori Morimoto1f5e2a32011-04-21 10:33:52 +0900674{
675 struct fsi_master *master = fsi_get_master(fsi);
Kuninori Morimoto1f5e2a32011-04-21 10:33:52 +0900676 u32 clk = fsi_is_port_a(fsi) ? CRA : CRB;
Kuninori Morimoto1f5e2a32011-04-21 10:33:52 +0900677
Kuninori Morimoto1ddddd32011-05-23 20:46:23 +0900678 if (enable)
679 fsi_irq_enable(fsi, is_play);
680 else
681 fsi_irq_disable(fsi, is_play);
682
Kuninori Morimotocda828c2011-05-23 20:46:35 +0900683 if (fsi_is_clk_master(fsi))
Kuninori Morimoto1f5e2a32011-04-21 10:33:52 +0900684 fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
685}
686
687/*
688 * ctrl function
689 */
Kuninori Morimoto4a942b42010-03-25 19:15:51 +0900690static void fsi_fifo_init(struct fsi_priv *fsi,
691 int is_play,
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900692 struct device *dev)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900693{
Kuninori Morimoto4a942b42010-03-25 19:15:51 +0900694 struct fsi_master *master = fsi_get_master(fsi);
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900695 struct fsi_stream *io = fsi_get_stream(fsi, is_play);
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +0900696 u32 shift, i;
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900697 int frame_capa;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900698
Kuninori Morimoto4a942b42010-03-25 19:15:51 +0900699 /* get on-chip RAM capacity */
700 shift = fsi_master_read(master, FIFO_SZ);
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900701 shift >>= fsi_get_port_shift(fsi, is_play);
702 shift &= FIFO_SZ_MASK;
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900703 frame_capa = 256 << shift;
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900704 dev_dbg(dev, "fifo = %d words\n", frame_capa);
Kuninori Morimoto4a942b42010-03-25 19:15:51 +0900705
706 /*
707 * The maximum number of sample data varies depending
708 * on the number of channels selected for the format.
709 *
710 * FIFOs are used in 4-channel units in 3-channel mode
711 * and in 8-channel units in 5- to 7-channel mode
712 * meaning that more FIFOs than the required size of DPRAM
713 * are used.
714 *
715 * ex) if 256 words of DP-RAM is connected
716 * 1 channel: 256 (256 x 1 = 256)
717 * 2 channels: 128 (128 x 2 = 256)
718 * 3 channels: 64 ( 64 x 3 = 192)
719 * 4 channels: 64 ( 64 x 4 = 256)
720 * 5 channels: 32 ( 32 x 5 = 160)
721 * 6 channels: 32 ( 32 x 6 = 192)
722 * 7 channels: 32 ( 32 x 7 = 224)
723 * 8 channels: 32 ( 32 x 8 = 256)
724 */
Kuninori Morimoto160afa72011-01-24 10:42:08 +0900725 for (i = 1; i < fsi->chan_num; i <<= 1)
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900726 frame_capa >>= 1;
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900727 dev_dbg(dev, "%d channel %d store\n",
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900728 fsi->chan_num, frame_capa);
729
730 io->fifo_sample_capa = fsi_frame2sample(fsi, frame_capa);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900731
Kuninori Morimotoe8c8b632010-12-03 17:37:55 +0900732 /*
733 * set interrupt generation factor
734 * clear FIFO
735 */
736 if (is_play) {
737 fsi_reg_write(fsi, DOFF_CTL, IRQ_HALF);
738 fsi_reg_mask_set(fsi, DOFF_CTL, FIFO_CLR, FIFO_CLR);
739 } else {
740 fsi_reg_write(fsi, DIFF_CTL, IRQ_HALF);
741 fsi_reg_mask_set(fsi, DIFF_CTL, FIFO_CLR, FIFO_CLR);
742 }
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900743}
744
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900745static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, int stream)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900746{
747 struct snd_pcm_runtime *runtime;
748 struct snd_pcm_substream *substream = NULL;
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900749 int is_play = fsi_stream_is_play(stream);
750 struct fsi_stream *io = fsi_get_stream(fsi, is_play);
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900751 int sample_residues;
752 int sample_width;
753 int samples;
754 int samples_max;
Kuninori Morimotob9fde182010-09-17 13:48:32 +0900755 int over_period;
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900756 void (*fn)(struct fsi_priv *fsi, int size);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900757
758 if (!fsi ||
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900759 !io->substream ||
760 !io->substream->runtime)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900761 return -EINVAL;
762
Kuninori Morimoto1c418d12009-12-28 14:09:05 +0900763 over_period = 0;
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900764 substream = io->substream;
Kuninori Morimoto1c418d12009-12-28 14:09:05 +0900765 runtime = substream->runtime;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900766
767 /* FSI FIFO has limit.
768 * So, this driver can not send periods data at a time
769 */
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900770 if (io->buff_sample_pos >=
771 io->period_samples * (io->period_pos + 1)) {
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900772
Kuninori Morimoto1c418d12009-12-28 14:09:05 +0900773 over_period = 1;
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900774 io->period_pos = (io->period_pos + 1) % runtime->periods;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900775
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900776 if (0 == io->period_pos)
777 io->buff_sample_pos = 0;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900778 }
779
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900780 /* get 1 sample data width */
781 sample_width = samples_to_bytes(runtime, 1);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900782
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900783 /* get number of residue samples */
784 sample_residues = io->buff_sample_capa - io->buff_sample_pos;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900785
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900786 if (is_play) {
787 /*
788 * for play-back
789 *
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900790 * samples_max : number of FSI fifo free samples space
791 * samples : number of ALSA residue samples
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900792 */
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900793 samples_max = io->fifo_sample_capa;
794 samples_max -= fsi_get_current_fifo_samples(fsi, is_play);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900795
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900796 samples = sample_residues;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900797
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900798 switch (sample_width) {
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900799 case 2:
800 fn = fsi_dma_soft_push16;
801 break;
802 case 4:
803 fn = fsi_dma_soft_push32;
804 break;
805 default:
806 return -EINVAL;
807 }
808 } else {
809 /*
810 * for capture
811 *
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900812 * samples_max : number of ALSA free samples space
813 * samples : number of samples in FSI fifo
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900814 */
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900815 samples_max = sample_residues;
816 samples = fsi_get_current_fifo_samples(fsi, is_play);
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900817
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900818 switch (sample_width) {
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900819 case 2:
820 fn = fsi_dma_soft_pop16;
821 break;
822 case 4:
823 fn = fsi_dma_soft_pop32;
824 break;
825 default:
826 return -EINVAL;
827 }
Kuninori Morimoto9ddc9aa2009-10-30 12:02:39 +0900828 }
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900829
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900830 samples = min(samples, samples_max);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900831
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900832 fn(fsi, samples);
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900833
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +0900834 /* update buff_sample_pos */
835 io->buff_sample_pos += samples;
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900836
Kuninori Morimoto1c418d12009-12-28 14:09:05 +0900837 if (over_period)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900838 snd_pcm_period_elapsed(substream);
839
Kuninori Morimoto47fc9a02010-02-22 16:41:57 +0900840 return 0;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900841}
842
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900843static int fsi_data_pop(struct fsi_priv *fsi)
Kuninori Morimoto07102f32009-10-30 12:02:44 +0900844{
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900845 return fsi_fifo_data_ctrl(fsi, SNDRV_PCM_STREAM_CAPTURE);
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900846}
Kuninori Morimoto07102f32009-10-30 12:02:44 +0900847
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900848static int fsi_data_push(struct fsi_priv *fsi)
Kuninori Morimotod8b33532010-09-17 13:49:05 +0900849{
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900850 return fsi_fifo_data_ctrl(fsi, SNDRV_PCM_STREAM_PLAYBACK);
Kuninori Morimoto07102f32009-10-30 12:02:44 +0900851}
852
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900853static irqreturn_t fsi_interrupt(int irq, void *data)
854{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900855 struct fsi_master *master = data;
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900856 u32 int_st = fsi_irq_get_status(master);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900857
858 /* clear irq status */
Kuninori Morimotofeb58cf2010-03-24 15:27:24 +0900859 fsi_master_mask_set(master, SOFT_RST, IR, 0);
860 fsi_master_mask_set(master, SOFT_RST, IR, IR);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900861
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900862 if (int_st & AB_IO(1, AO_SHIFT))
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900863 fsi_data_push(&master->fsia);
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900864 if (int_st & AB_IO(1, BO_SHIFT))
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900865 fsi_data_push(&master->fsib);
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900866 if (int_st & AB_IO(1, AI_SHIFT))
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900867 fsi_data_pop(&master->fsia);
Kuninori Morimotocf6edd02010-10-12 11:40:53 +0900868 if (int_st & AB_IO(1, BI_SHIFT))
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900869 fsi_data_pop(&master->fsib);
870
871 fsi_count_fifo_err(&master->fsia);
872 fsi_count_fifo_err(&master->fsib);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900873
Kuninori Morimoto48d78e52010-12-03 17:37:31 +0900874 fsi_irq_clear_status(&master->fsia);
875 fsi_irq_clear_status(&master->fsib);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900876
877 return IRQ_HANDLED;
878}
879
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +0900880/*
881 * dai ops
882 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900883
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900884static int fsi_hw_startup(struct fsi_priv *fsi,
885 int is_play,
886 struct device *dev)
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900887{
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900888 u32 flags = fsi_get_info_flags(fsi);
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +0900889 u32 data = 0;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900890
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900891 pm_runtime_get_sync(dev);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900892
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +0900893 /* clock setting */
894 if (fsi_is_clk_master(fsi))
895 data = DIMD | DOMD;
896
897 fsi_reg_mask_set(fsi, CKG1, (DIMD | DOMD), data);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900898
899 /* clock inversion (CKG2) */
900 data = 0;
Kuninori Morimotob427b442010-07-13 12:01:15 +0900901 if (SH_FSI_LRM_INV & flags)
902 data |= 1 << 12;
903 if (SH_FSI_BRM_INV & flags)
904 data |= 1 << 8;
905 if (SH_FSI_LRS_INV & flags)
906 data |= 1 << 4;
907 if (SH_FSI_BRS_INV & flags)
908 data |= 1 << 0;
909
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900910 fsi_reg_write(fsi, CKG2, data);
911
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +0900912 /* set format */
913 fsi_reg_write(fsi, DO_FMT, fsi->do_fmt);
914 fsi_reg_write(fsi, DI_FMT, fsi->di_fmt);
915
916 /* spdif ? */
917 if (fsi_is_spdif(fsi)) {
918 fsi_spdif_clk_ctrl(fsi, 1);
919 fsi_reg_mask_set(fsi, OUT_SEL, DMMD, DMMD);
920 }
921
Kuninori Morimoto10ea76c2010-03-23 11:47:54 +0900922 /* irq clear */
923 fsi_irq_disable(fsi, is_play);
924 fsi_irq_clear_status(fsi);
925
926 /* fifo init */
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900927 fsi_fifo_init(fsi, is_play, dev);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900928
Kuninori Morimotoa68a3b42010-10-12 11:39:50 +0900929 return 0;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900930}
931
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900932static void fsi_hw_shutdown(struct fsi_priv *fsi,
933 int is_play,
934 struct device *dev)
935{
936 if (fsi_is_clk_master(fsi))
937 fsi_set_master_clk(dev, fsi, fsi->rate, 0);
938
939 pm_runtime_put_sync(dev);
940}
941
942static int fsi_dai_startup(struct snd_pcm_substream *substream,
943 struct snd_soc_dai *dai)
944{
945 struct fsi_priv *fsi = fsi_get_priv(substream);
946 int is_play = fsi_is_play(substream);
947
948 return fsi_hw_startup(fsi, is_play, dai->dev);
949}
950
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900951static void fsi_dai_shutdown(struct snd_pcm_substream *substream,
952 struct snd_soc_dai *dai)
953{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900954 struct fsi_priv *fsi = fsi_get_priv(substream);
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900955 int is_play = fsi_is_play(substream);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900956
Kuninori Morimoto23ca8532011-05-23 20:46:26 +0900957 fsi_hw_shutdown(fsi, is_play, dai->dev);
Kuninori Morimotod4bc99b2010-11-24 02:44:06 +0000958 fsi->rate = 0;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900959}
960
961static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
962 struct snd_soc_dai *dai)
963{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +0900964 struct fsi_priv *fsi = fsi_get_priv(substream);
Kuninori Morimoto00545782010-10-12 18:30:14 +0900965 int is_play = fsi_is_play(substream);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900966 int ret = 0;
967
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900968 switch (cmd) {
969 case SNDRV_PCM_TRIGGER_START:
Kuninori Morimoto0ffe2962011-05-23 20:45:57 +0900970 fsi_stream_push(fsi, is_play, substream);
Kuninori Morimoto1ec9bc32010-12-17 12:55:22 +0900971 ret = is_play ? fsi_data_push(fsi) : fsi_data_pop(fsi);
Kuninori Morimoto1ddddd32011-05-23 20:46:23 +0900972 fsi_port_start(fsi, is_play);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900973 break;
974 case SNDRV_PCM_TRIGGER_STOP:
Kuninori Morimoto1ddddd32011-05-23 20:46:23 +0900975 fsi_port_stop(fsi, is_play);
Kuninori Morimoto93193c22010-10-12 19:19:28 +0900976 fsi_stream_pop(fsi, is_play);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +0900977 break;
978 }
979
980 return ret;
981}
982
Kuninori Morimotof17c13c2011-01-24 10:43:19 +0900983static int fsi_set_fmt_dai(struct fsi_priv *fsi, unsigned int fmt)
984{
985 u32 data = 0;
986
987 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
988 case SND_SOC_DAIFMT_I2S:
989 data = CR_I2S;
990 fsi->chan_num = 2;
991 break;
992 case SND_SOC_DAIFMT_LEFT_J:
993 data = CR_PCM;
994 fsi->chan_num = 2;
995 break;
996 default:
997 return -EINVAL;
998 }
999
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +09001000 fsi->do_fmt = data;
1001 fsi->di_fmt = data;
Kuninori Morimotof17c13c2011-01-24 10:43:19 +09001002
1003 return 0;
1004}
1005
1006static int fsi_set_fmt_spdif(struct fsi_priv *fsi)
1007{
1008 struct fsi_master *master = fsi_get_master(fsi);
1009 u32 data = 0;
1010
1011 if (master->core->ver < 2)
1012 return -EINVAL;
1013
1014 data = CR_BWS_16 | CR_DTMD_SPDIF_PCM | CR_PCM;
1015 fsi->chan_num = 2;
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +09001016 fsi->spdif = 1;
Kuninori Morimotof17c13c2011-01-24 10:43:19 +09001017
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +09001018 fsi->do_fmt = data;
1019 fsi->di_fmt = data;
Kuninori Morimotof17c13c2011-01-24 10:43:19 +09001020
1021 return 0;
1022}
1023
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001024static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1025{
1026 struct fsi_priv *fsi = fsi_get_priv_frm_dai(dai);
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +09001027 struct fsi_master *master = fsi_get_master(fsi);
1028 set_rate_func set_rate = fsi_get_info_set_rate(master);
Kuninori Morimotof17c13c2011-01-24 10:43:19 +09001029 u32 flags = fsi_get_info_flags(fsi);
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001030 int ret;
1031
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001032 /* set master/slave audio interface */
1033 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1034 case SND_SOC_DAIFMT_CBM_CFM:
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +09001035 fsi->clk_master = 1;
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001036 break;
1037 case SND_SOC_DAIFMT_CBS_CFS:
1038 break;
1039 default:
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +09001040 return -EINVAL;
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001041 }
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +09001042
1043 if (fsi_is_clk_master(fsi) && !set_rate) {
1044 dev_err(dai->dev, "platform doesn't have set_rate\n");
Kuninori Morimoto9478e0b2011-05-23 20:46:07 +09001045 return -EINVAL;
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +09001046 }
1047
Kuninori Morimotof17c13c2011-01-24 10:43:19 +09001048 /* set format */
1049 switch (flags & SH_FSI_FMT_MASK) {
1050 case SH_FSI_FMT_DAI:
1051 ret = fsi_set_fmt_dai(fsi, fmt & SND_SOC_DAIFMT_FORMAT_MASK);
1052 break;
1053 case SH_FSI_FMT_SPDIF:
1054 ret = fsi_set_fmt_spdif(fsi);
1055 break;
1056 default:
1057 ret = -EINVAL;
1058 }
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001059
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001060 return ret;
1061}
1062
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001063static int fsi_dai_hw_params(struct snd_pcm_substream *substream,
1064 struct snd_pcm_hw_params *params,
1065 struct snd_soc_dai *dai)
1066{
1067 struct fsi_priv *fsi = fsi_get_priv(substream);
Kuninori Morimotod4bc99b2010-11-24 02:44:06 +00001068 long rate = params_rate(params);
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001069 int ret;
1070
Kuninori Morimoto6a9ebad2011-04-21 10:33:36 +09001071 if (!fsi_is_clk_master(fsi))
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001072 return 0;
1073
Kuninori Morimoto4f56cde2011-05-23 20:46:18 +09001074 ret = fsi_set_master_clk(dai->dev, fsi, rate, 1);
1075 if (ret < 0)
Kuninori Morimotod4bc99b2010-11-24 02:44:06 +00001076 return ret;
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001077
Kuninori Morimotod4bc99b2010-11-24 02:44:06 +00001078 fsi->rate = rate;
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001079
1080 return ret;
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001081}
1082
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001083static struct snd_soc_dai_ops fsi_dai_ops = {
1084 .startup = fsi_dai_startup,
1085 .shutdown = fsi_dai_shutdown,
1086 .trigger = fsi_dai_trigger,
Kuninori Morimoto4d805f72011-01-20 11:46:02 +09001087 .set_fmt = fsi_dai_set_fmt,
Kuninori Morimotoccad7b42010-07-13 12:13:14 +09001088 .hw_params = fsi_dai_hw_params,
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001089};
1090
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +09001091/*
1092 * pcm ops
1093 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001094
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001095static struct snd_pcm_hardware fsi_pcm_hardware = {
1096 .info = SNDRV_PCM_INFO_INTERLEAVED |
1097 SNDRV_PCM_INFO_MMAP |
1098 SNDRV_PCM_INFO_MMAP_VALID |
1099 SNDRV_PCM_INFO_PAUSE,
1100 .formats = FSI_FMTS,
1101 .rates = FSI_RATES,
1102 .rate_min = 8000,
1103 .rate_max = 192000,
1104 .channels_min = 1,
1105 .channels_max = 2,
1106 .buffer_bytes_max = 64 * 1024,
1107 .period_bytes_min = 32,
1108 .period_bytes_max = 8192,
1109 .periods_min = 1,
1110 .periods_max = 32,
1111 .fifo_size = 256,
1112};
1113
1114static int fsi_pcm_open(struct snd_pcm_substream *substream)
1115{
1116 struct snd_pcm_runtime *runtime = substream->runtime;
1117 int ret = 0;
1118
1119 snd_soc_set_runtime_hwparams(substream, &fsi_pcm_hardware);
1120
1121 ret = snd_pcm_hw_constraint_integer(runtime,
1122 SNDRV_PCM_HW_PARAM_PERIODS);
1123
1124 return ret;
1125}
1126
1127static int fsi_hw_params(struct snd_pcm_substream *substream,
1128 struct snd_pcm_hw_params *hw_params)
1129{
1130 return snd_pcm_lib_malloc_pages(substream,
1131 params_buffer_bytes(hw_params));
1132}
1133
1134static int fsi_hw_free(struct snd_pcm_substream *substream)
1135{
1136 return snd_pcm_lib_free_pages(substream);
1137}
1138
1139static snd_pcm_uframes_t fsi_pointer(struct snd_pcm_substream *substream)
1140{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +09001141 struct fsi_priv *fsi = fsi_get_priv(substream);
Kuninori Morimoto93193c22010-10-12 19:19:28 +09001142 struct fsi_stream *io = fsi_get_stream(fsi, fsi_is_play(substream));
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +09001143 int samples_pos = io->buff_sample_pos - 1;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001144
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +09001145 if (samples_pos < 0)
1146 samples_pos = 0;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001147
Kuninori Morimoto2e651ba2011-05-23 20:46:03 +09001148 return fsi_sample2frame(fsi, samples_pos);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001149}
1150
1151static struct snd_pcm_ops fsi_pcm_ops = {
1152 .open = fsi_pcm_open,
1153 .ioctl = snd_pcm_lib_ioctl,
1154 .hw_params = fsi_hw_params,
1155 .hw_free = fsi_hw_free,
1156 .pointer = fsi_pointer,
1157};
1158
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +09001159/*
1160 * snd_soc_platform
1161 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001162
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001163#define PREALLOC_BUFFER (32 * 1024)
1164#define PREALLOC_BUFFER_MAX (32 * 1024)
1165
1166static void fsi_pcm_free(struct snd_pcm *pcm)
1167{
1168 snd_pcm_lib_preallocate_free_for_all(pcm);
1169}
1170
1171static int fsi_pcm_new(struct snd_card *card,
1172 struct snd_soc_dai *dai,
1173 struct snd_pcm *pcm)
1174{
1175 /*
1176 * dont use SNDRV_DMA_TYPE_DEV, since it will oops the SH kernel
1177 * in MMAP mode (i.e. aplay -M)
1178 */
1179 return snd_pcm_lib_preallocate_pages_for_all(
1180 pcm,
1181 SNDRV_DMA_TYPE_CONTINUOUS,
1182 snd_dma_continuous_data(GFP_KERNEL),
1183 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1184}
1185
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +09001186/*
1187 * alsa struct
1188 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001189
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001190static struct snd_soc_dai_driver fsi_soc_dai[] = {
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001191 {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001192 .name = "fsia-dai",
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001193 .playback = {
1194 .rates = FSI_RATES,
1195 .formats = FSI_FMTS,
1196 .channels_min = 1,
1197 .channels_max = 8,
1198 },
Kuninori Morimoto07102f32009-10-30 12:02:44 +09001199 .capture = {
1200 .rates = FSI_RATES,
1201 .formats = FSI_FMTS,
1202 .channels_min = 1,
1203 .channels_max = 8,
1204 },
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001205 .ops = &fsi_dai_ops,
1206 },
1207 {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001208 .name = "fsib-dai",
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001209 .playback = {
1210 .rates = FSI_RATES,
1211 .formats = FSI_FMTS,
1212 .channels_min = 1,
1213 .channels_max = 8,
1214 },
Kuninori Morimoto07102f32009-10-30 12:02:44 +09001215 .capture = {
1216 .rates = FSI_RATES,
1217 .formats = FSI_FMTS,
1218 .channels_min = 1,
1219 .channels_max = 8,
1220 },
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001221 .ops = &fsi_dai_ops,
1222 },
1223};
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001224
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001225static struct snd_soc_platform_driver fsi_soc_platform = {
1226 .ops = &fsi_pcm_ops,
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001227 .pcm_new = fsi_pcm_new,
1228 .pcm_free = fsi_pcm_free,
1229};
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001230
Kuninori Morimotoc8fe2572010-09-17 13:48:17 +09001231/*
1232 * platform function
1233 */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001234
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001235static int fsi_probe(struct platform_device *pdev)
1236{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +09001237 struct fsi_master *master;
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001238 const struct platform_device_id *id_entry;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001239 struct resource *res;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001240 unsigned int irq;
1241 int ret;
1242
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001243 id_entry = pdev->id_entry;
1244 if (!id_entry) {
1245 dev_err(&pdev->dev, "unknown fsi device\n");
1246 return -ENODEV;
1247 }
1248
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001249 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1250 irq = platform_get_irq(pdev, 0);
Uwe Kleine-Königb6aa1792009-12-16 17:10:09 +01001251 if (!res || (int)irq <= 0) {
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001252 dev_err(&pdev->dev, "Not enough FSI platform resources.\n");
1253 ret = -ENODEV;
1254 goto exit;
1255 }
1256
1257 master = kzalloc(sizeof(*master), GFP_KERNEL);
1258 if (!master) {
1259 dev_err(&pdev->dev, "Could not allocate master\n");
1260 ret = -ENOMEM;
1261 goto exit;
1262 }
1263
1264 master->base = ioremap_nocache(res->start, resource_size(res));
1265 if (!master->base) {
1266 ret = -ENXIO;
1267 dev_err(&pdev->dev, "Unable to ioremap FSI registers.\n");
1268 goto exit_kfree;
1269 }
1270
Kuninori Morimoto3bc28072010-07-29 16:48:32 +09001271 /* master setting */
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001272 master->irq = irq;
1273 master->info = pdev->dev.platform_data;
Kuninori Morimoto73b92c12010-07-13 12:13:04 +09001274 master->core = (struct fsi_core *)id_entry->driver_data;
Kuninori Morimoto8fc176d2010-01-28 13:46:16 +09001275 spin_lock_init(&master->lock);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001276
Kuninori Morimoto3bc28072010-07-29 16:48:32 +09001277 /* FSI A setting */
1278 master->fsia.base = master->base;
1279 master->fsia.master = master;
Kuninori Morimoto3bc28072010-07-29 16:48:32 +09001280
1281 /* FSI B setting */
1282 master->fsib.base = master->base + 0x40;
1283 master->fsib.master = master;
Kuninori Morimoto3bc28072010-07-29 16:48:32 +09001284
Kuninori Morimoto785d1c42009-11-30 20:24:48 +09001285 pm_runtime_enable(&pdev->dev);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001286 dev_set_drvdata(&pdev->dev, master);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001287
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001288 ret = request_irq(irq, &fsi_interrupt, IRQF_DISABLED,
1289 id_entry->name, master);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001290 if (ret) {
1291 dev_err(&pdev->dev, "irq request err\n");
Kuninori Morimoto9ddc9aa2009-10-30 12:02:39 +09001292 goto exit_iounmap;
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001293 }
1294
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001295 ret = snd_soc_register_platform(&pdev->dev, &fsi_soc_platform);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001296 if (ret < 0) {
1297 dev_err(&pdev->dev, "cannot snd soc register\n");
1298 goto exit_free_irq;
1299 }
1300
Kuninori Morimoto0b5ec872011-04-08 15:09:02 +09001301 ret = snd_soc_register_dais(&pdev->dev, fsi_soc_dai,
1302 ARRAY_SIZE(fsi_soc_dai));
1303 if (ret < 0) {
1304 dev_err(&pdev->dev, "cannot snd dai register\n");
1305 goto exit_snd_soc;
1306 }
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001307
Kuninori Morimoto0b5ec872011-04-08 15:09:02 +09001308 return ret;
1309
1310exit_snd_soc:
1311 snd_soc_unregister_platform(&pdev->dev);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001312exit_free_irq:
1313 free_irq(irq, master);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001314exit_iounmap:
1315 iounmap(master->base);
Kuninori Morimoto785d1c42009-11-30 20:24:48 +09001316 pm_runtime_disable(&pdev->dev);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001317exit_kfree:
1318 kfree(master);
1319 master = NULL;
1320exit:
1321 return ret;
1322}
1323
1324static int fsi_remove(struct platform_device *pdev)
1325{
Kuninori Morimoto71f6e062009-12-02 15:11:08 +09001326 struct fsi_master *master;
1327
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001328 master = dev_get_drvdata(&pdev->dev);
Kuninori Morimoto71f6e062009-12-02 15:11:08 +09001329
Kuninori Morimotod985f272011-04-08 15:09:25 +09001330 free_irq(master->irq, master);
Kuninori Morimoto785d1c42009-11-30 20:24:48 +09001331 pm_runtime_disable(&pdev->dev);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001332
Kuninori Morimotod985f272011-04-08 15:09:25 +09001333 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(fsi_soc_dai));
1334 snd_soc_unregister_platform(&pdev->dev);
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001335
1336 iounmap(master->base);
1337 kfree(master);
Kuninori Morimoto71f6e062009-12-02 15:11:08 +09001338
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001339 return 0;
1340}
1341
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001342static void __fsi_suspend(struct fsi_priv *fsi,
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001343 int is_play,
Kuninori Morimoto4f56cde2011-05-23 20:46:18 +09001344 struct device *dev)
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001345{
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001346 if (!fsi_stream_is_working(fsi, is_play))
1347 return;
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001348
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001349 fsi_port_stop(fsi, is_play);
1350 fsi_hw_shutdown(fsi, is_play, dev);
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001351}
1352
1353static void __fsi_resume(struct fsi_priv *fsi,
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001354 int is_play,
Kuninori Morimoto4f56cde2011-05-23 20:46:18 +09001355 struct device *dev)
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001356{
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001357 if (!fsi_stream_is_working(fsi, is_play))
1358 return;
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001359
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001360 fsi_hw_startup(fsi, is_play, dev);
1361
1362 if (fsi_is_clk_master(fsi) && fsi->rate)
Kuninori Morimoto4f56cde2011-05-23 20:46:18 +09001363 fsi_set_master_clk(dev, fsi, fsi->rate, 1);
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001364
1365 fsi_port_start(fsi, is_play);
1366
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001367}
1368
1369static int fsi_suspend(struct device *dev)
1370{
1371 struct fsi_master *master = dev_get_drvdata(dev);
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001372 struct fsi_priv *fsia = &master->fsia;
1373 struct fsi_priv *fsib = &master->fsib;
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001374
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001375 __fsi_suspend(fsia, 1, dev);
1376 __fsi_suspend(fsia, 0, dev);
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001377
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001378 __fsi_suspend(fsib, 1, dev);
1379 __fsi_suspend(fsib, 0, dev);
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001380
1381 return 0;
1382}
1383
1384static int fsi_resume(struct device *dev)
1385{
1386 struct fsi_master *master = dev_get_drvdata(dev);
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001387 struct fsi_priv *fsia = &master->fsia;
1388 struct fsi_priv *fsib = &master->fsib;
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001389
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001390 __fsi_resume(fsia, 1, dev);
1391 __fsi_resume(fsia, 0, dev);
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001392
Kuninori Morimotocda828c2011-05-23 20:46:35 +09001393 __fsi_resume(fsib, 1, dev);
1394 __fsi_resume(fsib, 0, dev);
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001395
1396 return 0;
1397}
1398
Kuninori Morimoto785d1c42009-11-30 20:24:48 +09001399static int fsi_runtime_nop(struct device *dev)
1400{
1401 /* Runtime PM callback shared between ->runtime_suspend()
1402 * and ->runtime_resume(). Simply returns success.
1403 *
1404 * This driver re-initializes all registers after
1405 * pm_runtime_get_sync() anyway so there is no need
1406 * to save and restore registers here.
1407 */
1408 return 0;
1409}
1410
1411static struct dev_pm_ops fsi_pm_ops = {
Kuninori Morimoto106c79e2011-04-21 10:33:47 +09001412 .suspend = fsi_suspend,
1413 .resume = fsi_resume,
Kuninori Morimoto785d1c42009-11-30 20:24:48 +09001414 .runtime_suspend = fsi_runtime_nop,
1415 .runtime_resume = fsi_runtime_nop,
1416};
1417
Kuninori Morimoto73b92c12010-07-13 12:13:04 +09001418static struct fsi_core fsi1_core = {
1419 .ver = 1,
1420
1421 /* Interrupt */
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001422 .int_st = INT_ST,
1423 .iemsk = IEMSK,
1424 .imsk = IMSK,
1425};
1426
Kuninori Morimoto73b92c12010-07-13 12:13:04 +09001427static struct fsi_core fsi2_core = {
1428 .ver = 2,
1429
1430 /* Interrupt */
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001431 .int_st = CPU_INT_ST,
1432 .iemsk = CPU_IEMSK,
1433 .imsk = CPU_IMSK,
Kuninori Morimoto2b0e7302010-12-03 17:37:44 +09001434 .a_mclk = A_MST_CTLR,
1435 .b_mclk = B_MST_CTLR,
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001436};
1437
1438static struct platform_device_id fsi_id_table[] = {
Kuninori Morimoto73b92c12010-07-13 12:13:04 +09001439 { "sh_fsi", (kernel_ulong_t)&fsi1_core },
1440 { "sh_fsi2", (kernel_ulong_t)&fsi2_core },
Guennadi Liakhovetski05c69452010-10-05 17:54:28 +02001441 {},
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001442};
Dzianis Kahanovichd85a6d72010-09-17 16:42:05 +03001443MODULE_DEVICE_TABLE(platform, fsi_id_table);
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001444
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001445static struct platform_driver fsi_driver = {
1446 .driver = {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +00001447 .name = "fsi-pcm-audio",
Kuninori Morimoto785d1c42009-11-30 20:24:48 +09001448 .pm = &fsi_pm_ops,
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001449 },
1450 .probe = fsi_probe,
1451 .remove = fsi_remove,
Kuninori Morimotocc780d32010-03-25 19:15:53 +09001452 .id_table = fsi_id_table,
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001453};
1454
1455static int __init fsi_mobile_init(void)
1456{
1457 return platform_driver_register(&fsi_driver);
1458}
1459
1460static void __exit fsi_mobile_exit(void)
1461{
1462 platform_driver_unregister(&fsi_driver);
1463}
Dzianis Kahanovichd85a6d72010-09-17 16:42:05 +03001464
Kuninori Morimotoa4d7d552009-08-20 21:01:05 +09001465module_init(fsi_mobile_init);
1466module_exit(fsi_mobile_exit);
1467
1468MODULE_LICENSE("GPL");
1469MODULE_DESCRIPTION("SuperH onchip FSI audio driver");
1470MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");
Guennadi Liakhovetskib3c27b52011-04-15 20:17:34 +02001471MODULE_ALIAS("platform:fsi-pcm-audio");