2 * Fifo-attached Serial Interface (FSI) support for SH7724
4 * Copyright (C) 2009 Renesas Solutions Corp.
5 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
8 * Copyright (c) 2007 Manuel Lauss <mano@roarinelk.homelinux.net>
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.
15 #include <linux/delay.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/pm_runtime.h>
20 #include <linux/of_device.h>
21 #include <linux/scatterlist.h>
22 #include <linux/sh_dma.h>
23 #include <linux/slab.h>
24 #include <linux/module.h>
25 #include <linux/workqueue.h>
26 #include <sound/soc.h>
27 #include <sound/pcm_params.h>
28 #include <sound/sh_fsi.h>
30 /* PortA/PortB register */
31 #define REG_DO_FMT 0x0000
32 #define REG_DOFF_CTL 0x0004
33 #define REG_DOFF_ST 0x0008
34 #define REG_DI_FMT 0x000C
35 #define REG_DIFF_CTL 0x0010
36 #define REG_DIFF_ST 0x0014
37 #define REG_CKG1 0x0018
38 #define REG_CKG2 0x001C
39 #define REG_DIDT 0x0020
40 #define REG_DODT 0x0024
41 #define REG_MUTE_ST 0x0028
42 #define REG_OUT_DMAC 0x002C
43 #define REG_OUT_SEL 0x0030
44 #define REG_IN_DMAC 0x0038
47 #define MST_CLK_RST 0x0210
48 #define MST_SOFT_RST 0x0214
49 #define MST_FIFO_SZ 0x0218
51 /* core register (depend on FSI version) */
52 #define A_MST_CTLR 0x0180
53 #define B_MST_CTLR 0x01A0
54 #define CPU_INT_ST 0x01F4
55 #define CPU_IEMSK 0x01F8
56 #define CPU_IMSK 0x01FC
63 #define CR_BWS_MASK (0x3 << 20) /* FSI2 */
64 #define CR_BWS_24 (0x0 << 20) /* FSI2 */
65 #define CR_BWS_16 (0x1 << 20) /* FSI2 */
66 #define CR_BWS_20 (0x2 << 20) /* FSI2 */
68 #define CR_DTMD_PCM (0x0 << 8) /* FSI2 */
69 #define CR_DTMD_SPDIF_PCM (0x1 << 8) /* FSI2 */
70 #define CR_DTMD_SPDIF_STREAM (0x2 << 8) /* FSI2 */
72 #define CR_MONO (0x0 << 4)
73 #define CR_MONO_D (0x1 << 4)
74 #define CR_PCM (0x2 << 4)
75 #define CR_I2S (0x3 << 4)
76 #define CR_TDM (0x4 << 4)
77 #define CR_TDM_D (0x5 << 4)
81 #define VDMD_MASK (0x3 << 4)
82 #define VDMD_FRONT (0x0 << 4) /* Package in front */
83 #define VDMD_BACK (0x1 << 4) /* Package in back */
84 #define VDMD_STREAM (0x2 << 4) /* Stream mode(16bit * 2) */
86 #define DMA_ON (0x1 << 0)
90 #define IRQ_HALF 0x00100000
91 #define FIFO_CLR 0x00000001
94 #define ERR_OVER 0x00000010
95 #define ERR_UNDER 0x00000001
96 #define ST_ERR (ERR_OVER | ERR_UNDER)
99 #define ACKMD_MASK 0x00007000
100 #define BPFMD_MASK 0x00000700
101 #define DIMD (1 << 4)
102 #define DOMD (1 << 0)
105 #define BP (1 << 4) /* Fix the signal of Biphase output */
106 #define SE (1 << 0) /* Fix the master clock */
112 /* IO SHIFT / MACRO */
117 #define AB_IO(param, shift) (param << shift)
120 #define PBSR (1 << 12) /* Port B Software Reset */
121 #define PASR (1 << 8) /* Port A Software Reset */
122 #define IR (1 << 4) /* Interrupt Reset */
123 #define FSISR (1 << 0) /* Software Reset */
126 #define DMMD (1 << 4) /* SPDIF output timing 0: Biphase only */
127 /* 1: Biphase and serial */
130 #define FIFO_SZ_MASK 0x7
132 #define FSI_RATES SNDRV_PCM_RATE_8000_96000
134 #define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
141 * A : sample widtht 16bit setting
142 * B : sample widtht 24bit setting
145 #define SHIFT_16DATA 0
146 #define SHIFT_24DATA 4
148 #define PACKAGE_24BITBUS_BACK 0
149 #define PACKAGE_24BITBUS_FRONT 1
150 #define PACKAGE_16BITBUS_STREAM 2
152 #define BUSOP_SET(s, a) ((a) << SHIFT_ ## s ## DATA)
153 #define BUSOP_GET(s, a) (((a) >> SHIFT_ ## s ## DATA) & 0xF)
156 * FSI driver use below type name for variable
158 * xxx_num : number of data
159 * xxx_pos : position of data
160 * xxx_capa : capacity of data
164 * period/frame/sample image
168 * period pos period pos
170 * |<-------------------- period--------------------->|
171 * ==|============================================ ... =|==
173 * ||<----- frame ----->|<------ frame ----->| ... |
174 * |+--------------------+--------------------+- ... |
175 * ||[ sample ][ sample ]|[ sample ][ sample ]| ... |
176 * |+--------------------+--------------------+- ... |
177 * ==|============================================ ... =|==
195 * FSIxCLK [CPG] (ick) -------> |
196 * |-> FSI_DIV (div)-> FSI2
197 * FSIxCK [external] (xck) ---> |
204 struct fsi_stream_handler;
208 * these are initialized by fsi_stream_init()
210 struct snd_pcm_substream *substream;
211 int fifo_sample_capa; /* sample capacity of FSI FIFO */
212 int buff_sample_capa; /* sample capacity of ALSA buffer */
213 int buff_sample_pos; /* sample position of ALSA buffer */
214 int period_samples; /* sample number / 1 period */
215 int period_pos; /* current period position */
216 int sample_width; /* sample width */
226 * thse are initialized by fsi_handler_init()
228 struct fsi_stream_handler *handler;
229 struct fsi_priv *priv;
232 * these are for DMAEngine
234 struct dma_chan *chan;
239 /* see [FSI clock] */
244 int (*set_rate)(struct device *dev,
245 struct fsi_priv *fsi);
254 struct fsi_master *master;
256 struct fsi_stream playback;
257 struct fsi_stream capture;
259 struct fsi_clk clock;
264 unsigned int clk_master:1;
265 unsigned int clk_cpg:1;
266 unsigned int spdif:1;
267 unsigned int enable_stream:1;
268 unsigned int bit_clk_inv:1;
269 unsigned int lr_clk_inv:1;
272 struct fsi_stream_handler {
273 int (*init)(struct fsi_priv *fsi, struct fsi_stream *io);
274 int (*quit)(struct fsi_priv *fsi, struct fsi_stream *io);
275 int (*probe)(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev);
276 int (*transfer)(struct fsi_priv *fsi, struct fsi_stream *io);
277 int (*remove)(struct fsi_priv *fsi, struct fsi_stream *io);
278 int (*start_stop)(struct fsi_priv *fsi, struct fsi_stream *io,
281 #define fsi_stream_handler_call(io, func, args...) \
283 !((io)->handler->func) ? 0 : \
284 (io)->handler->func(args))
298 struct fsi_priv fsia;
299 struct fsi_priv fsib;
300 const struct fsi_core *core;
304 static int fsi_stream_is_play(struct fsi_priv *fsi, struct fsi_stream *io);
307 * basic read write function
310 static void __fsi_reg_write(u32 __iomem *reg, u32 data)
312 /* valid data area is 24bit */
315 __raw_writel(data, reg);
318 static u32 __fsi_reg_read(u32 __iomem *reg)
320 return __raw_readl(reg);
323 static void __fsi_reg_mask_set(u32 __iomem *reg, u32 mask, u32 data)
325 u32 val = __fsi_reg_read(reg);
330 __fsi_reg_write(reg, val);
333 #define fsi_reg_write(p, r, d)\
334 __fsi_reg_write((p->base + REG_##r), d)
336 #define fsi_reg_read(p, r)\
337 __fsi_reg_read((p->base + REG_##r))
339 #define fsi_reg_mask_set(p, r, m, d)\
340 __fsi_reg_mask_set((p->base + REG_##r), m, d)
342 #define fsi_master_read(p, r) _fsi_master_read(p, MST_##r)
343 #define fsi_core_read(p, r) _fsi_master_read(p, p->core->r)
344 static u32 _fsi_master_read(struct fsi_master *master, u32 reg)
349 spin_lock_irqsave(&master->lock, flags);
350 ret = __fsi_reg_read(master->base + reg);
351 spin_unlock_irqrestore(&master->lock, flags);
356 #define fsi_master_mask_set(p, r, m, d) _fsi_master_mask_set(p, MST_##r, m, d)
357 #define fsi_core_mask_set(p, r, m, d) _fsi_master_mask_set(p, p->core->r, m, d)
358 static void _fsi_master_mask_set(struct fsi_master *master,
359 u32 reg, u32 mask, u32 data)
363 spin_lock_irqsave(&master->lock, flags);
364 __fsi_reg_mask_set(master->base + reg, mask, data);
365 spin_unlock_irqrestore(&master->lock, flags);
371 static int fsi_version(struct fsi_master *master)
373 return master->core->ver;
376 static struct fsi_master *fsi_get_master(struct fsi_priv *fsi)
381 static int fsi_is_clk_master(struct fsi_priv *fsi)
383 return fsi->clk_master;
386 static int fsi_is_port_a(struct fsi_priv *fsi)
388 return fsi->master->base == fsi->base;
391 static int fsi_is_spdif(struct fsi_priv *fsi)
396 static int fsi_is_enable_stream(struct fsi_priv *fsi)
398 return fsi->enable_stream;
401 static int fsi_is_play(struct snd_pcm_substream *substream)
403 return substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
406 static struct snd_soc_dai *fsi_get_dai(struct snd_pcm_substream *substream)
408 struct snd_soc_pcm_runtime *rtd = substream->private_data;
413 static struct fsi_priv *fsi_get_priv_frm_dai(struct snd_soc_dai *dai)
415 struct fsi_master *master = snd_soc_dai_get_drvdata(dai);
418 return &master->fsia;
420 return &master->fsib;
423 static struct fsi_priv *fsi_get_priv(struct snd_pcm_substream *substream)
425 return fsi_get_priv_frm_dai(fsi_get_dai(substream));
428 static u32 fsi_get_port_shift(struct fsi_priv *fsi, struct fsi_stream *io)
430 int is_play = fsi_stream_is_play(fsi, io);
431 int is_porta = fsi_is_port_a(fsi);
435 shift = is_play ? AO_SHIFT : AI_SHIFT;
437 shift = is_play ? BO_SHIFT : BI_SHIFT;
442 static int fsi_frame2sample(struct fsi_priv *fsi, int frames)
444 return frames * fsi->chan_num;
447 static int fsi_sample2frame(struct fsi_priv *fsi, int samples)
449 return samples / fsi->chan_num;
452 static int fsi_get_current_fifo_samples(struct fsi_priv *fsi,
453 struct fsi_stream *io)
455 int is_play = fsi_stream_is_play(fsi, io);
460 fsi_reg_read(fsi, DOFF_ST) :
461 fsi_reg_read(fsi, DIFF_ST);
463 frames = 0x1ff & (status >> 8);
465 return fsi_frame2sample(fsi, frames);
468 static void fsi_count_fifo_err(struct fsi_priv *fsi)
470 u32 ostatus = fsi_reg_read(fsi, DOFF_ST);
471 u32 istatus = fsi_reg_read(fsi, DIFF_ST);
473 if (ostatus & ERR_OVER)
474 fsi->playback.oerr_num++;
476 if (ostatus & ERR_UNDER)
477 fsi->playback.uerr_num++;
479 if (istatus & ERR_OVER)
480 fsi->capture.oerr_num++;
482 if (istatus & ERR_UNDER)
483 fsi->capture.uerr_num++;
485 fsi_reg_write(fsi, DOFF_ST, 0);
486 fsi_reg_write(fsi, DIFF_ST, 0);
490 * fsi_stream_xx() function
492 static inline int fsi_stream_is_play(struct fsi_priv *fsi,
493 struct fsi_stream *io)
495 return &fsi->playback == io;
498 static inline struct fsi_stream *fsi_stream_get(struct fsi_priv *fsi,
499 struct snd_pcm_substream *substream)
501 return fsi_is_play(substream) ? &fsi->playback : &fsi->capture;
504 static int fsi_stream_is_working(struct fsi_priv *fsi,
505 struct fsi_stream *io)
507 struct fsi_master *master = fsi_get_master(fsi);
511 spin_lock_irqsave(&master->lock, flags);
512 ret = !!(io->substream && io->substream->runtime);
513 spin_unlock_irqrestore(&master->lock, flags);
518 static struct fsi_priv *fsi_stream_to_priv(struct fsi_stream *io)
523 static void fsi_stream_init(struct fsi_priv *fsi,
524 struct fsi_stream *io,
525 struct snd_pcm_substream *substream)
527 struct snd_pcm_runtime *runtime = substream->runtime;
528 struct fsi_master *master = fsi_get_master(fsi);
531 spin_lock_irqsave(&master->lock, flags);
532 io->substream = substream;
533 io->buff_sample_capa = fsi_frame2sample(fsi, runtime->buffer_size);
534 io->buff_sample_pos = 0;
535 io->period_samples = fsi_frame2sample(fsi, runtime->period_size);
537 io->sample_width = samples_to_bytes(runtime, 1);
539 io->oerr_num = -1; /* ignore 1st err */
540 io->uerr_num = -1; /* ignore 1st err */
541 fsi_stream_handler_call(io, init, fsi, io);
542 spin_unlock_irqrestore(&master->lock, flags);
545 static void fsi_stream_quit(struct fsi_priv *fsi, struct fsi_stream *io)
547 struct snd_soc_dai *dai = fsi_get_dai(io->substream);
548 struct fsi_master *master = fsi_get_master(fsi);
551 spin_lock_irqsave(&master->lock, flags);
553 if (io->oerr_num > 0)
554 dev_err(dai->dev, "over_run = %d\n", io->oerr_num);
556 if (io->uerr_num > 0)
557 dev_err(dai->dev, "under_run = %d\n", io->uerr_num);
559 fsi_stream_handler_call(io, quit, fsi, io);
560 io->substream = NULL;
561 io->buff_sample_capa = 0;
562 io->buff_sample_pos = 0;
563 io->period_samples = 0;
565 io->sample_width = 0;
569 spin_unlock_irqrestore(&master->lock, flags);
572 static int fsi_stream_transfer(struct fsi_stream *io)
574 struct fsi_priv *fsi = fsi_stream_to_priv(io);
578 return fsi_stream_handler_call(io, transfer, fsi, io);
581 #define fsi_stream_start(fsi, io)\
582 fsi_stream_handler_call(io, start_stop, fsi, io, 1)
584 #define fsi_stream_stop(fsi, io)\
585 fsi_stream_handler_call(io, start_stop, fsi, io, 0)
587 static int fsi_stream_probe(struct fsi_priv *fsi, struct device *dev)
589 struct fsi_stream *io;
593 ret1 = fsi_stream_handler_call(io, probe, fsi, io, dev);
596 ret2 = fsi_stream_handler_call(io, probe, fsi, io, dev);
606 static int fsi_stream_remove(struct fsi_priv *fsi)
608 struct fsi_stream *io;
612 ret1 = fsi_stream_handler_call(io, remove, fsi, io);
615 ret2 = fsi_stream_handler_call(io, remove, fsi, io);
626 * format/bus/dma setting
628 static void fsi_format_bus_setup(struct fsi_priv *fsi, struct fsi_stream *io,
629 u32 bus, struct device *dev)
631 struct fsi_master *master = fsi_get_master(fsi);
632 int is_play = fsi_stream_is_play(fsi, io);
635 if (fsi_version(master) >= 2) {
639 * FSI2 needs DMA/Bus setting
642 case PACKAGE_24BITBUS_FRONT:
645 dev_dbg(dev, "24bit bus / package in front\n");
647 case PACKAGE_16BITBUS_STREAM:
650 dev_dbg(dev, "16bit bus / stream mode\n");
652 case PACKAGE_24BITBUS_BACK:
656 dev_dbg(dev, "24bit bus / package in back\n");
661 fsi_reg_write(fsi, OUT_DMAC, dma);
663 fsi_reg_write(fsi, IN_DMAC, dma);
667 fsi_reg_write(fsi, DO_FMT, fmt);
669 fsi_reg_write(fsi, DI_FMT, fmt);
676 static void fsi_irq_enable(struct fsi_priv *fsi, struct fsi_stream *io)
678 u32 data = AB_IO(1, fsi_get_port_shift(fsi, io));
679 struct fsi_master *master = fsi_get_master(fsi);
681 fsi_core_mask_set(master, imsk, data, data);
682 fsi_core_mask_set(master, iemsk, data, data);
685 static void fsi_irq_disable(struct fsi_priv *fsi, struct fsi_stream *io)
687 u32 data = AB_IO(1, fsi_get_port_shift(fsi, io));
688 struct fsi_master *master = fsi_get_master(fsi);
690 fsi_core_mask_set(master, imsk, data, 0);
691 fsi_core_mask_set(master, iemsk, data, 0);
694 static u32 fsi_irq_get_status(struct fsi_master *master)
696 return fsi_core_read(master, int_st);
699 static void fsi_irq_clear_status(struct fsi_priv *fsi)
702 struct fsi_master *master = fsi_get_master(fsi);
704 data |= AB_IO(1, fsi_get_port_shift(fsi, &fsi->playback));
705 data |= AB_IO(1, fsi_get_port_shift(fsi, &fsi->capture));
707 /* clear interrupt factor */
708 fsi_core_mask_set(master, int_st, data, 0);
712 * SPDIF master clock function
714 * These functions are used later FSI2
716 static void fsi_spdif_clk_ctrl(struct fsi_priv *fsi, int enable)
718 struct fsi_master *master = fsi_get_master(fsi);
722 val = enable ? mask : 0;
725 fsi_core_mask_set(master, a_mclk, mask, val) :
726 fsi_core_mask_set(master, b_mclk, mask, val);
732 static int fsi_clk_init(struct device *dev,
733 struct fsi_priv *fsi,
737 int (*set_rate)(struct device *dev,
738 struct fsi_priv *fsi))
740 struct fsi_clk *clock = &fsi->clock;
741 int is_porta = fsi_is_port_a(fsi);
748 clock->set_rate = set_rate;
750 clock->own = devm_clk_get(dev, NULL);
751 if (IS_ERR(clock->own))
756 clock->xck = devm_clk_get(dev, is_porta ? "xcka" : "xckb");
757 if (IS_ERR(clock->xck)) {
758 dev_err(dev, "can't get xck clock\n");
761 if (clock->xck == clock->own) {
762 dev_err(dev, "cpu doesn't support xck clock\n");
767 /* FSIACLK/FSIBCLK */
769 clock->ick = devm_clk_get(dev, is_porta ? "icka" : "ickb");
770 if (IS_ERR(clock->ick)) {
771 dev_err(dev, "can't get ick clock\n");
774 if (clock->ick == clock->own) {
775 dev_err(dev, "cpu doesn't support ick clock\n");
782 clock->div = devm_clk_get(dev, is_porta ? "diva" : "divb");
783 if (IS_ERR(clock->div)) {
784 dev_err(dev, "can't get div clock\n");
787 if (clock->div == clock->own) {
788 dev_err(dev, "cpu doens't support div clock\n");
796 #define fsi_clk_invalid(fsi) fsi_clk_valid(fsi, 0)
797 static void fsi_clk_valid(struct fsi_priv *fsi, unsigned long rate)
799 fsi->clock.rate = rate;
802 static int fsi_clk_is_valid(struct fsi_priv *fsi)
804 return fsi->clock.set_rate &&
808 static int fsi_clk_enable(struct device *dev,
809 struct fsi_priv *fsi)
811 struct fsi_clk *clock = &fsi->clock;
814 if (!fsi_clk_is_valid(fsi))
817 if (0 == clock->count) {
818 ret = clock->set_rate(dev, fsi);
820 fsi_clk_invalid(fsi);
824 clk_enable(clock->xck);
825 clk_enable(clock->ick);
826 clk_enable(clock->div);
834 static int fsi_clk_disable(struct device *dev,
835 struct fsi_priv *fsi)
837 struct fsi_clk *clock = &fsi->clock;
839 if (!fsi_clk_is_valid(fsi))
842 if (1 == clock->count--) {
843 clk_disable(clock->xck);
844 clk_disable(clock->ick);
845 clk_disable(clock->div);
851 static int fsi_clk_set_ackbpf(struct device *dev,
852 struct fsi_priv *fsi,
853 int ackmd, int bpfmd)
857 /* check ackmd/bpfmd relationship */
859 dev_err(dev, "unsupported rate (%d/%d)\n", ackmd, bpfmd);
881 dev_err(dev, "unsupported ackmd (%d)\n", ackmd);
906 dev_err(dev, "unsupported bpfmd (%d)\n", bpfmd);
910 dev_dbg(dev, "ACKMD/BPFMD = %d/%d\n", ackmd, bpfmd);
912 fsi_reg_mask_set(fsi, CKG1, (ACKMD_MASK | BPFMD_MASK) , data);
918 static int fsi_clk_set_rate_external(struct device *dev,
919 struct fsi_priv *fsi)
921 struct clk *xck = fsi->clock.xck;
922 struct clk *ick = fsi->clock.ick;
923 unsigned long rate = fsi->clock.rate;
928 /* check clock rate */
929 xrate = clk_get_rate(xck);
931 dev_err(dev, "unsupported clock rate\n");
935 clk_set_parent(ick, xck);
936 clk_set_rate(ick, xrate);
938 bpfmd = fsi->chan_num * 32;
939 ackmd = xrate / rate;
941 dev_dbg(dev, "external/rate = %ld/%ld\n", xrate, rate);
943 ret = fsi_clk_set_ackbpf(dev, fsi, ackmd, bpfmd);
945 dev_err(dev, "%s failed", __func__);
950 static int fsi_clk_set_rate_cpg(struct device *dev,
951 struct fsi_priv *fsi)
953 struct clk *ick = fsi->clock.ick;
954 struct clk *div = fsi->clock.div;
955 unsigned long rate = fsi->clock.rate;
956 unsigned long target = 0; /* 12288000 or 11289600 */
957 unsigned long actual, cout;
958 unsigned long diff, min;
959 unsigned long best_cout, best_act;
964 if (!(12288000 % rate))
966 if (!(11289600 % rate))
969 dev_err(dev, "unsupported rate\n");
973 bpfmd = fsi->chan_num * 32;
974 ackmd = target / rate;
975 ret = fsi_clk_set_ackbpf(dev, fsi, ackmd, bpfmd);
977 dev_err(dev, "%s failed", __func__);
984 * [CPG] = cout => [FSI_DIV] = audio => [FSI] => [codec]
986 * But, it needs to find best match of CPG and FSI_DIV
987 * combination, since it is difficult to generate correct
988 * frequency of audio clock from ick clock only.
989 * Because ick is created from its parent clock.
991 * target = rate x [512/256/128/64]fs
992 * cout = round(target x adjustment)
993 * actual = cout / adjustment (by FSI-DIV) ~= target
999 for (adj = 1; adj < 0xffff; adj++) {
1001 cout = target * adj;
1002 if (cout > 100000000) /* max clock = 100MHz */
1005 /* cout/actual audio clock */
1006 cout = clk_round_rate(ick, cout);
1007 actual = cout / adj;
1009 /* find best frequency */
1010 diff = abs(actual - target);
1018 ret = clk_set_rate(ick, best_cout);
1020 dev_err(dev, "ick clock failed\n");
1024 ret = clk_set_rate(div, clk_round_rate(div, best_act));
1026 dev_err(dev, "div clock failed\n");
1030 dev_dbg(dev, "ick/div = %ld/%ld\n",
1031 clk_get_rate(ick), clk_get_rate(div));
1036 static void fsi_pointer_update(struct fsi_stream *io, int size)
1038 io->buff_sample_pos += size;
1040 if (io->buff_sample_pos >=
1041 io->period_samples * (io->period_pos + 1)) {
1042 struct snd_pcm_substream *substream = io->substream;
1043 struct snd_pcm_runtime *runtime = substream->runtime;
1047 if (io->period_pos >= runtime->periods) {
1048 io->buff_sample_pos = 0;
1052 snd_pcm_period_elapsed(substream);
1057 * pio data transfer handler
1059 static void fsi_pio_push16(struct fsi_priv *fsi, u8 *_buf, int samples)
1063 if (fsi_is_enable_stream(fsi)) {
1067 * fsi_pio_push_init()
1069 u32 *buf = (u32 *)_buf;
1071 for (i = 0; i < samples / 2; i++)
1072 fsi_reg_write(fsi, DODT, buf[i]);
1075 u16 *buf = (u16 *)_buf;
1077 for (i = 0; i < samples; i++)
1078 fsi_reg_write(fsi, DODT, ((u32)*(buf + i) << 8));
1082 static void fsi_pio_pop16(struct fsi_priv *fsi, u8 *_buf, int samples)
1084 u16 *buf = (u16 *)_buf;
1087 for (i = 0; i < samples; i++)
1088 *(buf + i) = (u16)(fsi_reg_read(fsi, DIDT) >> 8);
1091 static void fsi_pio_push32(struct fsi_priv *fsi, u8 *_buf, int samples)
1093 u32 *buf = (u32 *)_buf;
1096 for (i = 0; i < samples; i++)
1097 fsi_reg_write(fsi, DODT, *(buf + i));
1100 static void fsi_pio_pop32(struct fsi_priv *fsi, u8 *_buf, int samples)
1102 u32 *buf = (u32 *)_buf;
1105 for (i = 0; i < samples; i++)
1106 *(buf + i) = fsi_reg_read(fsi, DIDT);
1109 static u8 *fsi_pio_get_area(struct fsi_priv *fsi, struct fsi_stream *io)
1111 struct snd_pcm_runtime *runtime = io->substream->runtime;
1113 return runtime->dma_area +
1114 samples_to_bytes(runtime, io->buff_sample_pos);
1117 static int fsi_pio_transfer(struct fsi_priv *fsi, struct fsi_stream *io,
1118 void (*run16)(struct fsi_priv *fsi, u8 *buf, int samples),
1119 void (*run32)(struct fsi_priv *fsi, u8 *buf, int samples),
1124 if (!fsi_stream_is_working(fsi, io))
1127 buf = fsi_pio_get_area(fsi, io);
1129 switch (io->sample_width) {
1131 run16(fsi, buf, samples);
1134 run32(fsi, buf, samples);
1140 fsi_pointer_update(io, samples);
1145 static int fsi_pio_pop(struct fsi_priv *fsi, struct fsi_stream *io)
1147 int sample_residues; /* samples in FSI fifo */
1148 int sample_space; /* ALSA free samples space */
1151 sample_residues = fsi_get_current_fifo_samples(fsi, io);
1152 sample_space = io->buff_sample_capa - io->buff_sample_pos;
1154 samples = min(sample_residues, sample_space);
1156 return fsi_pio_transfer(fsi, io,
1162 static int fsi_pio_push(struct fsi_priv *fsi, struct fsi_stream *io)
1164 int sample_residues; /* ALSA residue samples */
1165 int sample_space; /* FSI fifo free samples space */
1168 sample_residues = io->buff_sample_capa - io->buff_sample_pos;
1169 sample_space = io->fifo_sample_capa -
1170 fsi_get_current_fifo_samples(fsi, io);
1172 samples = min(sample_residues, sample_space);
1174 return fsi_pio_transfer(fsi, io,
1180 static int fsi_pio_start_stop(struct fsi_priv *fsi, struct fsi_stream *io,
1183 struct fsi_master *master = fsi_get_master(fsi);
1184 u32 clk = fsi_is_port_a(fsi) ? CRA : CRB;
1187 fsi_irq_enable(fsi, io);
1189 fsi_irq_disable(fsi, io);
1191 if (fsi_is_clk_master(fsi))
1192 fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
1197 static int fsi_pio_push_init(struct fsi_priv *fsi, struct fsi_stream *io)
1200 * we can use 16bit stream mode
1201 * when "playback" and "16bit data"
1202 * and platform allows "stream mode"
1206 if (fsi_is_enable_stream(fsi))
1207 io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
1208 BUSOP_SET(16, PACKAGE_16BITBUS_STREAM);
1210 io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
1211 BUSOP_SET(16, PACKAGE_24BITBUS_BACK);
1215 static int fsi_pio_pop_init(struct fsi_priv *fsi, struct fsi_stream *io)
1218 * always 24bit bus, package back when "capture"
1220 io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
1221 BUSOP_SET(16, PACKAGE_24BITBUS_BACK);
1225 static struct fsi_stream_handler fsi_pio_push_handler = {
1226 .init = fsi_pio_push_init,
1227 .transfer = fsi_pio_push,
1228 .start_stop = fsi_pio_start_stop,
1231 static struct fsi_stream_handler fsi_pio_pop_handler = {
1232 .init = fsi_pio_pop_init,
1233 .transfer = fsi_pio_pop,
1234 .start_stop = fsi_pio_start_stop,
1237 static irqreturn_t fsi_interrupt(int irq, void *data)
1239 struct fsi_master *master = data;
1240 u32 int_st = fsi_irq_get_status(master);
1242 /* clear irq status */
1243 fsi_master_mask_set(master, SOFT_RST, IR, 0);
1244 fsi_master_mask_set(master, SOFT_RST, IR, IR);
1246 if (int_st & AB_IO(1, AO_SHIFT))
1247 fsi_stream_transfer(&master->fsia.playback);
1248 if (int_st & AB_IO(1, BO_SHIFT))
1249 fsi_stream_transfer(&master->fsib.playback);
1250 if (int_st & AB_IO(1, AI_SHIFT))
1251 fsi_stream_transfer(&master->fsia.capture);
1252 if (int_st & AB_IO(1, BI_SHIFT))
1253 fsi_stream_transfer(&master->fsib.capture);
1255 fsi_count_fifo_err(&master->fsia);
1256 fsi_count_fifo_err(&master->fsib);
1258 fsi_irq_clear_status(&master->fsia);
1259 fsi_irq_clear_status(&master->fsib);
1265 * dma data transfer handler
1267 static int fsi_dma_init(struct fsi_priv *fsi, struct fsi_stream *io)
1270 * 24bit data : 24bit bus / package in back
1271 * 16bit data : 16bit bus / stream mode
1273 io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
1274 BUSOP_SET(16, PACKAGE_16BITBUS_STREAM);
1279 static void fsi_dma_complete(void *data)
1281 struct fsi_stream *io = (struct fsi_stream *)data;
1282 struct fsi_priv *fsi = fsi_stream_to_priv(io);
1284 fsi_pointer_update(io, io->period_samples);
1286 fsi_count_fifo_err(fsi);
1289 static int fsi_dma_transfer(struct fsi_priv *fsi, struct fsi_stream *io)
1291 struct snd_soc_dai *dai = fsi_get_dai(io->substream);
1292 struct snd_pcm_substream *substream = io->substream;
1293 struct dma_async_tx_descriptor *desc;
1294 int is_play = fsi_stream_is_play(fsi, io);
1295 enum dma_transfer_direction dir;
1299 dir = DMA_MEM_TO_DEV;
1301 dir = DMA_DEV_TO_MEM;
1303 desc = dmaengine_prep_dma_cyclic(io->chan,
1304 substream->runtime->dma_addr,
1305 snd_pcm_lib_buffer_bytes(substream),
1306 snd_pcm_lib_period_bytes(substream),
1308 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
1310 dev_err(dai->dev, "dmaengine_prep_dma_cyclic() fail\n");
1311 goto fsi_dma_transfer_err;
1314 desc->callback = fsi_dma_complete;
1315 desc->callback_param = io;
1317 if (dmaengine_submit(desc) < 0) {
1318 dev_err(dai->dev, "tx_submit() fail\n");
1319 goto fsi_dma_transfer_err;
1322 dma_async_issue_pending(io->chan);
1327 * In DMAEngine case, codec and FSI cannot be started simultaneously
1328 * since FSI is using the scheduler work queue.
1329 * Therefore, in capture case, probably FSI FIFO will have got
1330 * overflow error in this point.
1331 * in that case, DMA cannot start transfer until error was cleared.
1334 if (ERR_OVER & fsi_reg_read(fsi, DIFF_ST)) {
1335 fsi_reg_mask_set(fsi, DIFF_CTL, FIFO_CLR, FIFO_CLR);
1336 fsi_reg_write(fsi, DIFF_ST, 0);
1342 fsi_dma_transfer_err:
1346 static int fsi_dma_push_start_stop(struct fsi_priv *fsi, struct fsi_stream *io,
1349 struct fsi_master *master = fsi_get_master(fsi);
1350 u32 clk = fsi_is_port_a(fsi) ? CRA : CRB;
1351 u32 enable = start ? DMA_ON : 0;
1353 fsi_reg_mask_set(fsi, OUT_DMAC, DMA_ON, enable);
1355 dmaengine_terminate_all(io->chan);
1357 if (fsi_is_clk_master(fsi))
1358 fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
1363 static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev)
1365 dma_cap_mask_t mask;
1366 int is_play = fsi_stream_is_play(fsi, io);
1369 dma_cap_set(DMA_SLAVE, mask);
1371 io->chan = dma_request_slave_channel_compat(mask,
1372 shdma_chan_filter, (void *)io->dma_id,
1373 dev, is_play ? "tx" : "rx");
1375 struct dma_slave_config cfg = {};
1379 cfg.dst_addr = fsi->phys + REG_DODT;
1380 cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
1381 cfg.direction = DMA_MEM_TO_DEV;
1383 cfg.src_addr = fsi->phys + REG_DIDT;
1384 cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
1385 cfg.direction = DMA_DEV_TO_MEM;
1388 ret = dmaengine_slave_config(io->chan, &cfg);
1390 dma_release_channel(io->chan);
1397 /* switch to PIO handler */
1399 fsi->playback.handler = &fsi_pio_push_handler;
1401 fsi->capture.handler = &fsi_pio_pop_handler;
1403 dev_info(dev, "switch handler (dma => pio)\n");
1406 return fsi_stream_probe(fsi, dev);
1412 static int fsi_dma_remove(struct fsi_priv *fsi, struct fsi_stream *io)
1414 fsi_stream_stop(fsi, io);
1417 dma_release_channel(io->chan);
1423 static struct fsi_stream_handler fsi_dma_push_handler = {
1424 .init = fsi_dma_init,
1425 .probe = fsi_dma_probe,
1426 .transfer = fsi_dma_transfer,
1427 .remove = fsi_dma_remove,
1428 .start_stop = fsi_dma_push_start_stop,
1434 static void fsi_fifo_init(struct fsi_priv *fsi,
1435 struct fsi_stream *io,
1438 struct fsi_master *master = fsi_get_master(fsi);
1439 int is_play = fsi_stream_is_play(fsi, io);
1443 /* get on-chip RAM capacity */
1444 shift = fsi_master_read(master, FIFO_SZ);
1445 shift >>= fsi_get_port_shift(fsi, io);
1446 shift &= FIFO_SZ_MASK;
1447 frame_capa = 256 << shift;
1448 dev_dbg(dev, "fifo = %d words\n", frame_capa);
1451 * The maximum number of sample data varies depending
1452 * on the number of channels selected for the format.
1454 * FIFOs are used in 4-channel units in 3-channel mode
1455 * and in 8-channel units in 5- to 7-channel mode
1456 * meaning that more FIFOs than the required size of DPRAM
1459 * ex) if 256 words of DP-RAM is connected
1460 * 1 channel: 256 (256 x 1 = 256)
1461 * 2 channels: 128 (128 x 2 = 256)
1462 * 3 channels: 64 ( 64 x 3 = 192)
1463 * 4 channels: 64 ( 64 x 4 = 256)
1464 * 5 channels: 32 ( 32 x 5 = 160)
1465 * 6 channels: 32 ( 32 x 6 = 192)
1466 * 7 channels: 32 ( 32 x 7 = 224)
1467 * 8 channels: 32 ( 32 x 8 = 256)
1469 for (i = 1; i < fsi->chan_num; i <<= 1)
1471 dev_dbg(dev, "%d channel %d store\n",
1472 fsi->chan_num, frame_capa);
1474 io->fifo_sample_capa = fsi_frame2sample(fsi, frame_capa);
1477 * set interrupt generation factor
1481 fsi_reg_write(fsi, DOFF_CTL, IRQ_HALF);
1482 fsi_reg_mask_set(fsi, DOFF_CTL, FIFO_CLR, FIFO_CLR);
1484 fsi_reg_write(fsi, DIFF_CTL, IRQ_HALF);
1485 fsi_reg_mask_set(fsi, DIFF_CTL, FIFO_CLR, FIFO_CLR);
1489 static int fsi_hw_startup(struct fsi_priv *fsi,
1490 struct fsi_stream *io,
1496 if (fsi_is_clk_master(fsi))
1499 fsi_reg_mask_set(fsi, CKG1, (DIMD | DOMD), data);
1501 /* clock inversion (CKG2) */
1503 if (fsi->bit_clk_inv)
1505 if (fsi->lr_clk_inv)
1507 if (fsi_is_clk_master(fsi))
1509 fsi_reg_write(fsi, CKG2, data);
1512 if (fsi_is_spdif(fsi)) {
1513 fsi_spdif_clk_ctrl(fsi, 1);
1514 fsi_reg_mask_set(fsi, OUT_SEL, DMMD, DMMD);
1521 switch (io->sample_width) {
1523 data = BUSOP_GET(16, io->bus_option);
1526 data = BUSOP_GET(24, io->bus_option);
1529 fsi_format_bus_setup(fsi, io, data, dev);
1532 fsi_irq_disable(fsi, io);
1533 fsi_irq_clear_status(fsi);
1536 fsi_fifo_init(fsi, io, dev);
1538 /* start master clock */
1539 if (fsi_is_clk_master(fsi))
1540 return fsi_clk_enable(dev, fsi);
1545 static int fsi_hw_shutdown(struct fsi_priv *fsi,
1548 /* stop master clock */
1549 if (fsi_is_clk_master(fsi))
1550 return fsi_clk_disable(dev, fsi);
1555 static int fsi_dai_startup(struct snd_pcm_substream *substream,
1556 struct snd_soc_dai *dai)
1558 struct fsi_priv *fsi = fsi_get_priv(substream);
1560 fsi_clk_invalid(fsi);
1565 static void fsi_dai_shutdown(struct snd_pcm_substream *substream,
1566 struct snd_soc_dai *dai)
1568 struct fsi_priv *fsi = fsi_get_priv(substream);
1570 fsi_clk_invalid(fsi);
1573 static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
1574 struct snd_soc_dai *dai)
1576 struct fsi_priv *fsi = fsi_get_priv(substream);
1577 struct fsi_stream *io = fsi_stream_get(fsi, substream);
1581 case SNDRV_PCM_TRIGGER_START:
1582 fsi_stream_init(fsi, io, substream);
1584 ret = fsi_hw_startup(fsi, io, dai->dev);
1586 ret = fsi_stream_start(fsi, io);
1588 ret = fsi_stream_transfer(io);
1590 case SNDRV_PCM_TRIGGER_STOP:
1592 ret = fsi_hw_shutdown(fsi, dai->dev);
1593 fsi_stream_stop(fsi, io);
1594 fsi_stream_quit(fsi, io);
1601 static int fsi_set_fmt_dai(struct fsi_priv *fsi, unsigned int fmt)
1603 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1604 case SND_SOC_DAIFMT_I2S:
1608 case SND_SOC_DAIFMT_LEFT_J:
1619 static int fsi_set_fmt_spdif(struct fsi_priv *fsi)
1621 struct fsi_master *master = fsi_get_master(fsi);
1623 if (fsi_version(master) < 2)
1626 fsi->fmt = CR_DTMD_SPDIF_PCM | CR_PCM;
1632 static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1634 struct fsi_priv *fsi = fsi_get_priv_frm_dai(dai);
1637 /* set master/slave audio interface */
1638 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1639 case SND_SOC_DAIFMT_CBM_CFM:
1641 case SND_SOC_DAIFMT_CBS_CFS:
1642 fsi->clk_master = 1; /* codec is slave, cpu is master */
1648 /* set clock inversion */
1649 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1650 case SND_SOC_DAIFMT_NB_IF:
1651 fsi->bit_clk_inv = 0;
1652 fsi->lr_clk_inv = 1;
1654 case SND_SOC_DAIFMT_IB_NF:
1655 fsi->bit_clk_inv = 1;
1656 fsi->lr_clk_inv = 0;
1658 case SND_SOC_DAIFMT_IB_IF:
1659 fsi->bit_clk_inv = 1;
1660 fsi->lr_clk_inv = 1;
1662 case SND_SOC_DAIFMT_NB_NF:
1664 fsi->bit_clk_inv = 0;
1665 fsi->lr_clk_inv = 0;
1669 if (fsi_is_clk_master(fsi)) {
1671 fsi_clk_init(dai->dev, fsi, 0, 1, 1,
1672 fsi_clk_set_rate_cpg);
1674 fsi_clk_init(dai->dev, fsi, 1, 1, 0,
1675 fsi_clk_set_rate_external);
1679 if (fsi_is_spdif(fsi))
1680 ret = fsi_set_fmt_spdif(fsi);
1682 ret = fsi_set_fmt_dai(fsi, fmt & SND_SOC_DAIFMT_FORMAT_MASK);
1687 static int fsi_dai_hw_params(struct snd_pcm_substream *substream,
1688 struct snd_pcm_hw_params *params,
1689 struct snd_soc_dai *dai)
1691 struct fsi_priv *fsi = fsi_get_priv(substream);
1693 if (fsi_is_clk_master(fsi))
1694 fsi_clk_valid(fsi, params_rate(params));
1699 static const struct snd_soc_dai_ops fsi_dai_ops = {
1700 .startup = fsi_dai_startup,
1701 .shutdown = fsi_dai_shutdown,
1702 .trigger = fsi_dai_trigger,
1703 .set_fmt = fsi_dai_set_fmt,
1704 .hw_params = fsi_dai_hw_params,
1711 static struct snd_pcm_hardware fsi_pcm_hardware = {
1712 .info = SNDRV_PCM_INFO_INTERLEAVED |
1713 SNDRV_PCM_INFO_MMAP |
1714 SNDRV_PCM_INFO_MMAP_VALID,
1715 .buffer_bytes_max = 64 * 1024,
1716 .period_bytes_min = 32,
1717 .period_bytes_max = 8192,
1723 static int fsi_pcm_open(struct snd_pcm_substream *substream)
1725 struct snd_pcm_runtime *runtime = substream->runtime;
1728 snd_soc_set_runtime_hwparams(substream, &fsi_pcm_hardware);
1730 ret = snd_pcm_hw_constraint_integer(runtime,
1731 SNDRV_PCM_HW_PARAM_PERIODS);
1736 static int fsi_hw_params(struct snd_pcm_substream *substream,
1737 struct snd_pcm_hw_params *hw_params)
1739 return snd_pcm_lib_malloc_pages(substream,
1740 params_buffer_bytes(hw_params));
1743 static int fsi_hw_free(struct snd_pcm_substream *substream)
1745 return snd_pcm_lib_free_pages(substream);
1748 static snd_pcm_uframes_t fsi_pointer(struct snd_pcm_substream *substream)
1750 struct fsi_priv *fsi = fsi_get_priv(substream);
1751 struct fsi_stream *io = fsi_stream_get(fsi, substream);
1753 return fsi_sample2frame(fsi, io->buff_sample_pos);
1756 static struct snd_pcm_ops fsi_pcm_ops = {
1757 .open = fsi_pcm_open,
1758 .ioctl = snd_pcm_lib_ioctl,
1759 .hw_params = fsi_hw_params,
1760 .hw_free = fsi_hw_free,
1761 .pointer = fsi_pointer,
1768 #define PREALLOC_BUFFER (32 * 1024)
1769 #define PREALLOC_BUFFER_MAX (32 * 1024)
1771 static int fsi_pcm_new(struct snd_soc_pcm_runtime *rtd)
1773 return snd_pcm_lib_preallocate_pages_for_all(
1776 rtd->card->snd_card->dev,
1777 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1784 static struct snd_soc_dai_driver fsi_soc_dai[] = {
1789 .formats = FSI_FMTS,
1795 .formats = FSI_FMTS,
1799 .ops = &fsi_dai_ops,
1805 .formats = FSI_FMTS,
1811 .formats = FSI_FMTS,
1815 .ops = &fsi_dai_ops,
1819 static struct snd_soc_platform_driver fsi_soc_platform = {
1820 .ops = &fsi_pcm_ops,
1821 .pcm_new = fsi_pcm_new,
1824 static const struct snd_soc_component_driver fsi_soc_component = {
1831 static void fsi_of_parse(char *name,
1832 struct device_node *np,
1833 struct sh_fsi_port_info *info,
1838 unsigned long flags = 0;
1842 } of_parse_property[] = {
1843 { "spdif-connection", SH_FSI_FMT_SPDIF },
1844 { "stream-mode-support", SH_FSI_ENABLE_STREAM_MODE },
1845 { "use-internal-clock", SH_FSI_CLK_CPG },
1848 for (i = 0; i < ARRAY_SIZE(of_parse_property); i++) {
1849 sprintf(prop, "%s,%s", name, of_parse_property[i].name);
1850 if (of_get_property(np, prop, NULL))
1851 flags |= of_parse_property[i].val;
1853 info->flags = flags;
1855 dev_dbg(dev, "%s flags : %lx\n", name, info->flags);
1858 static void fsi_port_info_init(struct fsi_priv *fsi,
1859 struct sh_fsi_port_info *info)
1861 if (info->flags & SH_FSI_FMT_SPDIF)
1864 if (info->flags & SH_FSI_CLK_CPG)
1867 if (info->flags & SH_FSI_ENABLE_STREAM_MODE)
1868 fsi->enable_stream = 1;
1871 static void fsi_handler_init(struct fsi_priv *fsi,
1872 struct sh_fsi_port_info *info)
1874 fsi->playback.handler = &fsi_pio_push_handler; /* default PIO */
1875 fsi->playback.priv = fsi;
1876 fsi->capture.handler = &fsi_pio_pop_handler; /* default PIO */
1877 fsi->capture.priv = fsi;
1880 fsi->playback.dma_id = info->tx_id;
1881 fsi->playback.handler = &fsi_dma_push_handler;
1885 static const struct fsi_core fsi1_core = {
1894 static const struct fsi_core fsi2_core = {
1898 .int_st = CPU_INT_ST,
1901 .a_mclk = A_MST_CTLR,
1902 .b_mclk = B_MST_CTLR,
1905 static const struct of_device_id fsi_of_match[] = {
1906 { .compatible = "renesas,sh_fsi", .data = &fsi1_core},
1907 { .compatible = "renesas,sh_fsi2", .data = &fsi2_core},
1910 MODULE_DEVICE_TABLE(of, fsi_of_match);
1912 static const struct platform_device_id fsi_id_table[] = {
1913 { "sh_fsi", (kernel_ulong_t)&fsi1_core },
1916 MODULE_DEVICE_TABLE(platform, fsi_id_table);
1918 static int fsi_probe(struct platform_device *pdev)
1920 struct fsi_master *master;
1921 struct device_node *np = pdev->dev.of_node;
1922 struct sh_fsi_platform_info info;
1923 const struct fsi_core *core;
1924 struct fsi_priv *fsi;
1925 struct resource *res;
1929 memset(&info, 0, sizeof(info));
1933 const struct of_device_id *of_id;
1935 of_id = of_match_device(fsi_of_match, &pdev->dev);
1938 fsi_of_parse("fsia", np, &info.port_a, &pdev->dev);
1939 fsi_of_parse("fsib", np, &info.port_b, &pdev->dev);
1942 const struct platform_device_id *id_entry = pdev->id_entry;
1944 core = (struct fsi_core *)id_entry->driver_data;
1946 if (pdev->dev.platform_data)
1947 memcpy(&info, pdev->dev.platform_data, sizeof(info));
1951 dev_err(&pdev->dev, "unknown fsi device\n");
1955 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1956 irq = platform_get_irq(pdev, 0);
1957 if (!res || (int)irq <= 0) {
1958 dev_err(&pdev->dev, "Not enough FSI platform resources.\n");
1962 master = devm_kzalloc(&pdev->dev, sizeof(*master), GFP_KERNEL);
1964 dev_err(&pdev->dev, "Could not allocate master\n");
1968 master->base = devm_ioremap_nocache(&pdev->dev,
1969 res->start, resource_size(res));
1970 if (!master->base) {
1971 dev_err(&pdev->dev, "Unable to ioremap FSI registers.\n");
1975 /* master setting */
1976 master->core = core;
1977 spin_lock_init(&master->lock);
1980 fsi = &master->fsia;
1981 fsi->base = master->base;
1982 fsi->phys = res->start;
1983 fsi->master = master;
1984 fsi_port_info_init(fsi, &info.port_a);
1985 fsi_handler_init(fsi, &info.port_a);
1986 ret = fsi_stream_probe(fsi, &pdev->dev);
1988 dev_err(&pdev->dev, "FSIA stream probe failed\n");
1993 fsi = &master->fsib;
1994 fsi->base = master->base + 0x40;
1995 fsi->phys = res->start + 0x40;
1996 fsi->master = master;
1997 fsi_port_info_init(fsi, &info.port_b);
1998 fsi_handler_init(fsi, &info.port_b);
1999 ret = fsi_stream_probe(fsi, &pdev->dev);
2001 dev_err(&pdev->dev, "FSIB stream probe failed\n");
2005 pm_runtime_enable(&pdev->dev);
2006 dev_set_drvdata(&pdev->dev, master);
2008 ret = devm_request_irq(&pdev->dev, irq, &fsi_interrupt, 0,
2009 dev_name(&pdev->dev), master);
2011 dev_err(&pdev->dev, "irq request err\n");
2015 ret = snd_soc_register_platform(&pdev->dev, &fsi_soc_platform);
2017 dev_err(&pdev->dev, "cannot snd soc register\n");
2021 ret = snd_soc_register_component(&pdev->dev, &fsi_soc_component,
2022 fsi_soc_dai, ARRAY_SIZE(fsi_soc_dai));
2024 dev_err(&pdev->dev, "cannot snd component register\n");
2031 snd_soc_unregister_platform(&pdev->dev);
2033 pm_runtime_disable(&pdev->dev);
2034 fsi_stream_remove(&master->fsib);
2036 fsi_stream_remove(&master->fsia);
2041 static int fsi_remove(struct platform_device *pdev)
2043 struct fsi_master *master;
2045 master = dev_get_drvdata(&pdev->dev);
2047 pm_runtime_disable(&pdev->dev);
2049 snd_soc_unregister_component(&pdev->dev);
2050 snd_soc_unregister_platform(&pdev->dev);
2052 fsi_stream_remove(&master->fsia);
2053 fsi_stream_remove(&master->fsib);
2058 static void __fsi_suspend(struct fsi_priv *fsi,
2059 struct fsi_stream *io,
2062 if (!fsi_stream_is_working(fsi, io))
2065 fsi_stream_stop(fsi, io);
2066 fsi_hw_shutdown(fsi, dev);
2069 static void __fsi_resume(struct fsi_priv *fsi,
2070 struct fsi_stream *io,
2073 if (!fsi_stream_is_working(fsi, io))
2076 fsi_hw_startup(fsi, io, dev);
2077 fsi_stream_start(fsi, io);
2080 static int fsi_suspend(struct device *dev)
2082 struct fsi_master *master = dev_get_drvdata(dev);
2083 struct fsi_priv *fsia = &master->fsia;
2084 struct fsi_priv *fsib = &master->fsib;
2086 __fsi_suspend(fsia, &fsia->playback, dev);
2087 __fsi_suspend(fsia, &fsia->capture, dev);
2089 __fsi_suspend(fsib, &fsib->playback, dev);
2090 __fsi_suspend(fsib, &fsib->capture, dev);
2095 static int fsi_resume(struct device *dev)
2097 struct fsi_master *master = dev_get_drvdata(dev);
2098 struct fsi_priv *fsia = &master->fsia;
2099 struct fsi_priv *fsib = &master->fsib;
2101 __fsi_resume(fsia, &fsia->playback, dev);
2102 __fsi_resume(fsia, &fsia->capture, dev);
2104 __fsi_resume(fsib, &fsib->playback, dev);
2105 __fsi_resume(fsib, &fsib->capture, dev);
2110 static struct dev_pm_ops fsi_pm_ops = {
2111 .suspend = fsi_suspend,
2112 .resume = fsi_resume,
2115 static struct platform_driver fsi_driver = {
2117 .name = "fsi-pcm-audio",
2119 .of_match_table = fsi_of_match,
2122 .remove = fsi_remove,
2123 .id_table = fsi_id_table,
2126 module_platform_driver(fsi_driver);
2128 MODULE_LICENSE("GPL v2");
2129 MODULE_DESCRIPTION("SuperH onchip FSI audio driver");
2130 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");
2131 MODULE_ALIAS("platform:fsi-pcm-audio");