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/pm_runtime.h>
18 #include <linux/slab.h>
19 #include <sound/soc.h>
20 #include <sound/sh_fsi.h>
23 #define DOFF_CTL 0x0004
24 #define DOFF_ST 0x0008
26 #define DIFF_CTL 0x0010
27 #define DIFF_ST 0x0014
32 #define MUTE_ST 0x0028
33 #define OUT_SEL 0x0030
34 #define REG_END OUT_SEL
36 #define A_MST_CTLR 0x0180
37 #define B_MST_CTLR 0x01A0
38 #define CPU_INT_ST 0x01F4
39 #define CPU_IEMSK 0x01F8
40 #define CPU_IMSK 0x01FC
45 #define CLK_RST 0x0210
46 #define SOFT_RST 0x0214
47 #define FIFO_SZ 0x0218
48 #define MREG_START A_MST_CTLR
49 #define MREG_END FIFO_SZ
53 #define CR_MONO (0x0 << 4)
54 #define CR_MONO_D (0x1 << 4)
55 #define CR_PCM (0x2 << 4)
56 #define CR_I2S (0x3 << 4)
57 #define CR_TDM (0x4 << 4)
58 #define CR_TDM_D (0x5 << 4)
59 #define CR_SPDIF 0x00100120
63 #define IRQ_HALF 0x00100000
64 #define FIFO_CLR 0x00000001
67 #define ERR_OVER 0x00000010
68 #define ERR_UNDER 0x00000001
69 #define ST_ERR (ERR_OVER | ERR_UNDER)
72 #define ACKMD_MASK 0x00007000
73 #define BPFMD_MASK 0x00000700
76 #define BP (1 << 4) /* Fix the signal of Biphase output */
77 #define SE (1 << 0) /* Fix the master clock */
80 #define B_CLK 0x00000010
81 #define A_CLK 0x00000001
83 /* IO SHIFT / MACRO */
88 #define AB_IO(param, shift) (param << shift)
91 #define PBSR (1 << 12) /* Port B Software Reset */
92 #define PASR (1 << 8) /* Port A Software Reset */
93 #define IR (1 << 4) /* Interrupt Reset */
94 #define FSISR (1 << 0) /* Software Reset */
97 #define FIFO_SZ_MASK 0x7
99 #define FSI_RATES SNDRV_PCM_RATE_8000_96000
101 #define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
104 * FSI driver use below type name for variable
106 * xxx_len : data length
107 * xxx_width : data width
108 * xxx_offset : data offset
109 * xxx_num : number of data
117 struct snd_pcm_substream
*substream
;
130 struct fsi_master
*master
;
132 struct fsi_stream playback
;
133 struct fsi_stream capture
;
149 struct fsi_priv fsia
;
150 struct fsi_priv fsib
;
151 struct fsi_core
*core
;
152 struct sh_fsi_platform_info
*info
;
157 * basic read write function
160 static void __fsi_reg_write(u32 reg
, u32 data
)
162 /* valid data area is 24bit */
165 __raw_writel(data
, reg
);
168 static u32
__fsi_reg_read(u32 reg
)
170 return __raw_readl(reg
);
173 static void __fsi_reg_mask_set(u32 reg
, u32 mask
, u32 data
)
175 u32 val
= __fsi_reg_read(reg
);
180 __fsi_reg_write(reg
, val
);
183 static void fsi_reg_write(struct fsi_priv
*fsi
, u32 reg
, u32 data
)
186 pr_err("fsi: register access err (%s)\n", __func__
);
190 __fsi_reg_write((u32
)(fsi
->base
+ reg
), data
);
193 static u32
fsi_reg_read(struct fsi_priv
*fsi
, u32 reg
)
196 pr_err("fsi: register access err (%s)\n", __func__
);
200 return __fsi_reg_read((u32
)(fsi
->base
+ reg
));
203 static void fsi_reg_mask_set(struct fsi_priv
*fsi
, u32 reg
, u32 mask
, u32 data
)
206 pr_err("fsi: register access err (%s)\n", __func__
);
210 __fsi_reg_mask_set((u32
)(fsi
->base
+ reg
), mask
, data
);
213 static void fsi_master_write(struct fsi_master
*master
, u32 reg
, u32 data
)
217 if ((reg
< MREG_START
) ||
219 pr_err("fsi: register access err (%s)\n", __func__
);
223 spin_lock_irqsave(&master
->lock
, flags
);
224 __fsi_reg_write((u32
)(master
->base
+ reg
), data
);
225 spin_unlock_irqrestore(&master
->lock
, flags
);
228 static u32
fsi_master_read(struct fsi_master
*master
, u32 reg
)
233 if ((reg
< MREG_START
) ||
235 pr_err("fsi: register access err (%s)\n", __func__
);
239 spin_lock_irqsave(&master
->lock
, flags
);
240 ret
= __fsi_reg_read((u32
)(master
->base
+ reg
));
241 spin_unlock_irqrestore(&master
->lock
, flags
);
246 static void fsi_master_mask_set(struct fsi_master
*master
,
247 u32 reg
, u32 mask
, u32 data
)
251 if ((reg
< MREG_START
) ||
253 pr_err("fsi: register access err (%s)\n", __func__
);
257 spin_lock_irqsave(&master
->lock
, flags
);
258 __fsi_reg_mask_set((u32
)(master
->base
+ reg
), mask
, data
);
259 spin_unlock_irqrestore(&master
->lock
, flags
);
266 static struct fsi_master
*fsi_get_master(struct fsi_priv
*fsi
)
271 static int fsi_is_port_a(struct fsi_priv
*fsi
)
273 return fsi
->master
->base
== fsi
->base
;
276 static struct snd_soc_dai
*fsi_get_dai(struct snd_pcm_substream
*substream
)
278 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
283 static struct fsi_priv
*fsi_get_priv(struct snd_pcm_substream
*substream
)
285 struct snd_soc_dai
*dai
= fsi_get_dai(substream
);
286 struct fsi_master
*master
= snd_soc_dai_get_drvdata(dai
);
289 return &master
->fsia
;
291 return &master
->fsib
;
294 static u32
fsi_get_info_flags(struct fsi_priv
*fsi
)
296 int is_porta
= fsi_is_port_a(fsi
);
297 struct fsi_master
*master
= fsi_get_master(fsi
);
299 return is_porta
? master
->info
->porta_flags
:
300 master
->info
->portb_flags
;
303 static inline int fsi_stream_is_play(int stream
)
305 return stream
== SNDRV_PCM_STREAM_PLAYBACK
;
308 static inline int fsi_is_play(struct snd_pcm_substream
*substream
)
310 return fsi_stream_is_play(substream
->stream
);
313 static inline struct fsi_stream
*fsi_get_stream(struct fsi_priv
*fsi
,
316 return is_play
? &fsi
->playback
: &fsi
->capture
;
319 static int fsi_is_master_mode(struct fsi_priv
*fsi
, int is_play
)
322 u32 flags
= fsi_get_info_flags(fsi
);
324 mode
= is_play
? SH_FSI_OUT_SLAVE_MODE
: SH_FSI_IN_SLAVE_MODE
;
331 return (mode
& flags
) != mode
;
334 static u32
fsi_get_port_shift(struct fsi_priv
*fsi
, int is_play
)
336 int is_porta
= fsi_is_port_a(fsi
);
340 shift
= is_play
? AO_SHIFT
: AI_SHIFT
;
342 shift
= is_play
? BO_SHIFT
: BI_SHIFT
;
347 static void fsi_stream_push(struct fsi_priv
*fsi
,
349 struct snd_pcm_substream
*substream
,
353 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
355 io
->substream
= substream
;
356 io
->buff_len
= buffer_len
;
358 io
->period_len
= period_len
;
362 static void fsi_stream_pop(struct fsi_priv
*fsi
, int is_play
)
364 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
366 io
->substream
= NULL
;
373 static int fsi_get_fifo_data_num(struct fsi_priv
*fsi
, int is_play
)
376 u32 reg
= is_play
? DOFF_ST
: DIFF_ST
;
377 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
380 status
= fsi_reg_read(fsi
, reg
);
381 data_num
= 0x1ff & (status
>> 8);
382 data_num
*= io
->chan_num
;
387 static int fsi_len2num(int len
, int width
)
392 #define fsi_num2offset(a, b) fsi_num2len(a, b)
393 static int fsi_num2len(int num
, int width
)
398 static int fsi_get_frame_width(struct fsi_priv
*fsi
, int is_play
)
400 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
401 struct snd_pcm_substream
*substream
= io
->substream
;
402 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
404 return frames_to_bytes(runtime
, 1) / io
->chan_num
;
411 static u8
*fsi_dma_get_area(struct fsi_priv
*fsi
, int stream
)
413 int is_play
= fsi_stream_is_play(stream
);
414 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
416 return io
->substream
->runtime
->dma_area
+ io
->buff_offset
;
419 static void fsi_dma_soft_push16(struct fsi_priv
*fsi
, int num
)
424 start
= (u16
*)fsi_dma_get_area(fsi
, SNDRV_PCM_STREAM_PLAYBACK
);
426 for (i
= 0; i
< num
; i
++)
427 fsi_reg_write(fsi
, DODT
, ((u32
)*(start
+ i
) << 8));
430 static void fsi_dma_soft_pop16(struct fsi_priv
*fsi
, int num
)
435 start
= (u16
*)fsi_dma_get_area(fsi
, SNDRV_PCM_STREAM_CAPTURE
);
438 for (i
= 0; i
< num
; i
++)
439 *(start
+ i
) = (u16
)(fsi_reg_read(fsi
, DIDT
) >> 8);
442 static void fsi_dma_soft_push32(struct fsi_priv
*fsi
, int num
)
447 start
= (u32
*)fsi_dma_get_area(fsi
, SNDRV_PCM_STREAM_PLAYBACK
);
450 for (i
= 0; i
< num
; i
++)
451 fsi_reg_write(fsi
, DODT
, *(start
+ i
));
454 static void fsi_dma_soft_pop32(struct fsi_priv
*fsi
, int num
)
459 start
= (u32
*)fsi_dma_get_area(fsi
, SNDRV_PCM_STREAM_CAPTURE
);
461 for (i
= 0; i
< num
; i
++)
462 *(start
+ i
) = fsi_reg_read(fsi
, DIDT
);
469 static void fsi_irq_enable(struct fsi_priv
*fsi
, int is_play
)
471 u32 data
= AB_IO(1, fsi_get_port_shift(fsi
, is_play
));
472 struct fsi_master
*master
= fsi_get_master(fsi
);
474 fsi_master_mask_set(master
, master
->core
->imsk
, data
, data
);
475 fsi_master_mask_set(master
, master
->core
->iemsk
, data
, data
);
478 static void fsi_irq_disable(struct fsi_priv
*fsi
, int is_play
)
480 u32 data
= AB_IO(1, fsi_get_port_shift(fsi
, is_play
));
481 struct fsi_master
*master
= fsi_get_master(fsi
);
483 fsi_master_mask_set(master
, master
->core
->imsk
, data
, 0);
484 fsi_master_mask_set(master
, master
->core
->iemsk
, data
, 0);
487 static u32
fsi_irq_get_status(struct fsi_master
*master
)
489 return fsi_master_read(master
, master
->core
->int_st
);
492 static void fsi_irq_clear_all_status(struct fsi_master
*master
)
494 fsi_master_write(master
, master
->core
->int_st
, 0);
497 static void fsi_irq_clear_status(struct fsi_priv
*fsi
)
500 struct fsi_master
*master
= fsi_get_master(fsi
);
502 data
|= AB_IO(1, fsi_get_port_shift(fsi
, 0));
503 data
|= AB_IO(1, fsi_get_port_shift(fsi
, 1));
505 /* clear interrupt factor */
506 fsi_master_mask_set(master
, master
->core
->int_st
, data
, 0);
510 * SPDIF master clock function
512 * These functions are used later FSI2
514 static void fsi_spdif_clk_ctrl(struct fsi_priv
*fsi
, int enable
)
516 struct fsi_master
*master
= fsi_get_master(fsi
);
519 if (master
->core
->ver
< 2) {
520 pr_err("fsi: register access err (%s)\n", __func__
);
525 fsi_master_mask_set(master
, fsi
->mst_ctrl
, val
, val
);
527 fsi_master_mask_set(master
, fsi
->mst_ctrl
, val
, 0);
534 static void fsi_clk_ctrl(struct fsi_priv
*fsi
, int enable
)
536 u32 val
= fsi_is_port_a(fsi
) ? (1 << 0) : (1 << 4);
537 struct fsi_master
*master
= fsi_get_master(fsi
);
540 fsi_master_mask_set(master
, CLK_RST
, val
, val
);
542 fsi_master_mask_set(master
, CLK_RST
, val
, 0);
545 static void fsi_fifo_init(struct fsi_priv
*fsi
,
547 struct snd_soc_dai
*dai
)
549 struct fsi_master
*master
= fsi_get_master(fsi
);
550 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
553 /* get on-chip RAM capacity */
554 shift
= fsi_master_read(master
, FIFO_SZ
);
555 shift
>>= fsi_get_port_shift(fsi
, is_play
);
556 shift
&= FIFO_SZ_MASK
;
557 io
->fifo_max_num
= 256 << shift
;
558 dev_dbg(dai
->dev
, "fifo = %d words\n", io
->fifo_max_num
);
561 * The maximum number of sample data varies depending
562 * on the number of channels selected for the format.
564 * FIFOs are used in 4-channel units in 3-channel mode
565 * and in 8-channel units in 5- to 7-channel mode
566 * meaning that more FIFOs than the required size of DPRAM
569 * ex) if 256 words of DP-RAM is connected
570 * 1 channel: 256 (256 x 1 = 256)
571 * 2 channels: 128 (128 x 2 = 256)
572 * 3 channels: 64 ( 64 x 3 = 192)
573 * 4 channels: 64 ( 64 x 4 = 256)
574 * 5 channels: 32 ( 32 x 5 = 160)
575 * 6 channels: 32 ( 32 x 6 = 192)
576 * 7 channels: 32 ( 32 x 7 = 224)
577 * 8 channels: 32 ( 32 x 8 = 256)
579 for (i
= 1; i
< io
->chan_num
; i
<<= 1)
580 io
->fifo_max_num
>>= 1;
581 dev_dbg(dai
->dev
, "%d channel %d store\n",
582 io
->chan_num
, io
->fifo_max_num
);
584 ctrl
= is_play
? DOFF_CTL
: DIFF_CTL
;
586 /* set interrupt generation factor */
587 fsi_reg_write(fsi
, ctrl
, IRQ_HALF
);
590 fsi_reg_mask_set(fsi
, ctrl
, FIFO_CLR
, FIFO_CLR
);
593 static void fsi_soft_all_reset(struct fsi_master
*master
)
596 fsi_master_mask_set(master
, SOFT_RST
, PASR
| PBSR
, 0);
600 fsi_master_mask_set(master
, SOFT_RST
, FSISR
, 0);
601 fsi_master_mask_set(master
, SOFT_RST
, FSISR
, FSISR
);
605 static int fsi_fifo_data_ctrl(struct fsi_priv
*fsi
, int startup
, int stream
)
607 struct snd_pcm_runtime
*runtime
;
608 struct snd_pcm_substream
*substream
= NULL
;
609 int is_play
= fsi_stream_is_play(stream
);
610 struct fsi_stream
*io
= fsi_get_stream(fsi
, is_play
);
611 u32 status_reg
= is_play
? DOFF_ST
: DIFF_ST
;
612 int data_residue_num
;
617 void (*fn
)(struct fsi_priv
*fsi
, int size
);
621 !io
->substream
->runtime
)
625 substream
= io
->substream
;
626 runtime
= substream
->runtime
;
628 /* FSI FIFO has limit.
629 * So, this driver can not send periods data at a time
631 if (io
->buff_offset
>=
632 fsi_num2offset(io
->period_num
+ 1, io
->period_len
)) {
635 io
->period_num
= (io
->period_num
+ 1) % runtime
->periods
;
637 if (0 == io
->period_num
)
641 /* get 1 channel data width */
642 ch_width
= fsi_get_frame_width(fsi
, is_play
);
644 /* get residue data number of alsa */
645 data_residue_num
= fsi_len2num(io
->buff_len
- io
->buff_offset
,
652 * data_num_max : number of FSI fifo free space
653 * data_num : number of ALSA residue data
655 data_num_max
= io
->fifo_max_num
* io
->chan_num
;
656 data_num_max
-= fsi_get_fifo_data_num(fsi
, is_play
);
658 data_num
= data_residue_num
;
662 fn
= fsi_dma_soft_push16
;
665 fn
= fsi_dma_soft_push32
;
674 * data_num_max : number of ALSA free space
675 * data_num : number of data in FSI fifo
677 data_num_max
= data_residue_num
;
678 data_num
= fsi_get_fifo_data_num(fsi
, is_play
);
682 fn
= fsi_dma_soft_pop16
;
685 fn
= fsi_dma_soft_pop32
;
692 data_num
= min(data_num
, data_num_max
);
696 /* update buff_offset */
697 io
->buff_offset
+= fsi_num2offset(data_num
, ch_width
);
699 /* check fifo status */
701 struct snd_soc_dai
*dai
= fsi_get_dai(substream
);
702 u32 status
= fsi_reg_read(fsi
, status_reg
);
704 if (status
& ERR_OVER
)
705 dev_err(dai
->dev
, "over run\n");
706 if (status
& ERR_UNDER
)
707 dev_err(dai
->dev
, "under run\n");
709 fsi_reg_write(fsi
, status_reg
, 0);
712 fsi_irq_enable(fsi
, is_play
);
715 snd_pcm_period_elapsed(substream
);
720 static int fsi_data_pop(struct fsi_priv
*fsi
, int startup
)
722 return fsi_fifo_data_ctrl(fsi
, startup
, SNDRV_PCM_STREAM_CAPTURE
);
725 static int fsi_data_push(struct fsi_priv
*fsi
, int startup
)
727 return fsi_fifo_data_ctrl(fsi
, startup
, SNDRV_PCM_STREAM_PLAYBACK
);
730 static irqreturn_t
fsi_interrupt(int irq
, void *data
)
732 struct fsi_master
*master
= data
;
733 u32 int_st
= fsi_irq_get_status(master
);
735 /* clear irq status */
736 fsi_master_mask_set(master
, SOFT_RST
, IR
, 0);
737 fsi_master_mask_set(master
, SOFT_RST
, IR
, IR
);
739 if (int_st
& AB_IO(1, AO_SHIFT
))
740 fsi_data_push(&master
->fsia
, 0);
741 if (int_st
& AB_IO(1, BO_SHIFT
))
742 fsi_data_push(&master
->fsib
, 0);
743 if (int_st
& AB_IO(1, AI_SHIFT
))
744 fsi_data_pop(&master
->fsia
, 0);
745 if (int_st
& AB_IO(1, BI_SHIFT
))
746 fsi_data_pop(&master
->fsib
, 0);
748 fsi_irq_clear_all_status(master
);
757 static int fsi_dai_startup(struct snd_pcm_substream
*substream
,
758 struct snd_soc_dai
*dai
)
760 struct fsi_priv
*fsi
= fsi_get_priv(substream
);
761 struct fsi_master
*master
= fsi_get_master(fsi
);
762 struct fsi_stream
*io
;
763 u32 flags
= fsi_get_info_flags(fsi
);
767 int is_play
= fsi_is_play(substream
);
770 io
= fsi_get_stream(fsi
, is_play
);
772 pm_runtime_get_sync(dai
->dev
);
775 data
= is_play
? (1 << 0) : (1 << 4);
776 is_master
= fsi_is_master_mode(fsi
, is_play
);
778 fsi_reg_mask_set(fsi
, CKG1
, data
, data
);
780 fsi_reg_mask_set(fsi
, CKG1
, data
, 0);
782 /* clock inversion (CKG2) */
784 if (SH_FSI_LRM_INV
& flags
)
786 if (SH_FSI_BRM_INV
& flags
)
788 if (SH_FSI_LRS_INV
& flags
)
790 if (SH_FSI_BRS_INV
& flags
)
793 fsi_reg_write(fsi
, CKG2
, data
);
797 reg
= is_play
? DO_FMT
: DI_FMT
;
798 fmt
= is_play
? SH_FSI_GET_OFMT(flags
) : SH_FSI_GET_IFMT(flags
);
800 case SH_FSI_FMT_MONO
:
804 case SH_FSI_FMT_MONO_DELAY
:
817 io
->chan_num
= is_play
?
818 SH_FSI_GET_CH_O(flags
) : SH_FSI_GET_CH_I(flags
);
819 data
= CR_TDM
| (io
->chan_num
- 1);
821 case SH_FSI_FMT_TDM_DELAY
:
822 io
->chan_num
= is_play
?
823 SH_FSI_GET_CH_O(flags
) : SH_FSI_GET_CH_I(flags
);
824 data
= CR_TDM_D
| (io
->chan_num
- 1);
826 case SH_FSI_FMT_SPDIF
:
827 if (master
->core
->ver
< 2) {
828 dev_err(dai
->dev
, "This FSI can not use SPDIF\n");
833 fsi_spdif_clk_ctrl(fsi
, 1);
834 fsi_reg_mask_set(fsi
, OUT_SEL
, 0x0010, 0x0010);
837 dev_err(dai
->dev
, "unknown format.\n");
840 fsi_reg_write(fsi
, reg
, data
);
843 fsi_irq_disable(fsi
, is_play
);
844 fsi_irq_clear_status(fsi
);
847 fsi_fifo_init(fsi
, is_play
, dai
);
852 static void fsi_dai_shutdown(struct snd_pcm_substream
*substream
,
853 struct snd_soc_dai
*dai
)
855 struct fsi_priv
*fsi
= fsi_get_priv(substream
);
856 int is_play
= fsi_is_play(substream
);
858 fsi_irq_disable(fsi
, is_play
);
859 fsi_clk_ctrl(fsi
, 0);
861 pm_runtime_put_sync(dai
->dev
);
864 static int fsi_dai_trigger(struct snd_pcm_substream
*substream
, int cmd
,
865 struct snd_soc_dai
*dai
)
867 struct fsi_priv
*fsi
= fsi_get_priv(substream
);
868 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
869 int is_play
= fsi_is_play(substream
);
873 case SNDRV_PCM_TRIGGER_START
:
874 fsi_stream_push(fsi
, is_play
, substream
,
875 frames_to_bytes(runtime
, runtime
->buffer_size
),
876 frames_to_bytes(runtime
, runtime
->period_size
));
877 ret
= is_play
? fsi_data_push(fsi
, 1) : fsi_data_pop(fsi
, 1);
879 case SNDRV_PCM_TRIGGER_STOP
:
880 fsi_irq_disable(fsi
, is_play
);
881 fsi_stream_pop(fsi
, is_play
);
888 static int fsi_dai_hw_params(struct snd_pcm_substream
*substream
,
889 struct snd_pcm_hw_params
*params
,
890 struct snd_soc_dai
*dai
)
892 struct fsi_priv
*fsi
= fsi_get_priv(substream
);
893 struct fsi_master
*master
= fsi_get_master(fsi
);
894 int (*set_rate
)(int is_porta
, int rate
) = master
->info
->set_rate
;
895 int fsi_ver
= master
->core
->ver
;
896 int is_play
= fsi_is_play(substream
);
899 /* if slave mode, set_rate is not needed */
900 if (!fsi_is_master_mode(fsi
, is_play
))
903 /* it is error if no set_rate */
907 ret
= set_rate(fsi_is_port_a(fsi
), params_rate(params
));
911 switch (ret
& SH_FSI_ACKMD_MASK
) {
914 case SH_FSI_ACKMD_512
:
917 case SH_FSI_ACKMD_256
:
920 case SH_FSI_ACKMD_128
:
923 case SH_FSI_ACKMD_64
:
926 case SH_FSI_ACKMD_32
:
928 dev_err(dai
->dev
, "unsupported ACKMD\n");
934 switch (ret
& SH_FSI_BPFMD_MASK
) {
937 case SH_FSI_BPFMD_32
:
940 case SH_FSI_BPFMD_64
:
943 case SH_FSI_BPFMD_128
:
946 case SH_FSI_BPFMD_256
:
949 case SH_FSI_BPFMD_512
:
952 case SH_FSI_BPFMD_16
:
954 dev_err(dai
->dev
, "unsupported ACKMD\n");
960 fsi_reg_mask_set(fsi
, CKG1
, (ACKMD_MASK
| BPFMD_MASK
) , data
);
962 fsi_clk_ctrl(fsi
, 1);
970 static struct snd_soc_dai_ops fsi_dai_ops
= {
971 .startup
= fsi_dai_startup
,
972 .shutdown
= fsi_dai_shutdown
,
973 .trigger
= fsi_dai_trigger
,
974 .hw_params
= fsi_dai_hw_params
,
981 static struct snd_pcm_hardware fsi_pcm_hardware
= {
982 .info
= SNDRV_PCM_INFO_INTERLEAVED
|
983 SNDRV_PCM_INFO_MMAP
|
984 SNDRV_PCM_INFO_MMAP_VALID
|
985 SNDRV_PCM_INFO_PAUSE
,
992 .buffer_bytes_max
= 64 * 1024,
993 .period_bytes_min
= 32,
994 .period_bytes_max
= 8192,
1000 static int fsi_pcm_open(struct snd_pcm_substream
*substream
)
1002 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1005 snd_soc_set_runtime_hwparams(substream
, &fsi_pcm_hardware
);
1007 ret
= snd_pcm_hw_constraint_integer(runtime
,
1008 SNDRV_PCM_HW_PARAM_PERIODS
);
1013 static int fsi_hw_params(struct snd_pcm_substream
*substream
,
1014 struct snd_pcm_hw_params
*hw_params
)
1016 return snd_pcm_lib_malloc_pages(substream
,
1017 params_buffer_bytes(hw_params
));
1020 static int fsi_hw_free(struct snd_pcm_substream
*substream
)
1022 return snd_pcm_lib_free_pages(substream
);
1025 static snd_pcm_uframes_t
fsi_pointer(struct snd_pcm_substream
*substream
)
1027 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1028 struct fsi_priv
*fsi
= fsi_get_priv(substream
);
1029 struct fsi_stream
*io
= fsi_get_stream(fsi
, fsi_is_play(substream
));
1032 location
= (io
->buff_offset
- 1);
1036 return bytes_to_frames(runtime
, location
);
1039 static struct snd_pcm_ops fsi_pcm_ops
= {
1040 .open
= fsi_pcm_open
,
1041 .ioctl
= snd_pcm_lib_ioctl
,
1042 .hw_params
= fsi_hw_params
,
1043 .hw_free
= fsi_hw_free
,
1044 .pointer
= fsi_pointer
,
1051 #define PREALLOC_BUFFER (32 * 1024)
1052 #define PREALLOC_BUFFER_MAX (32 * 1024)
1054 static void fsi_pcm_free(struct snd_pcm
*pcm
)
1056 snd_pcm_lib_preallocate_free_for_all(pcm
);
1059 static int fsi_pcm_new(struct snd_card
*card
,
1060 struct snd_soc_dai
*dai
,
1061 struct snd_pcm
*pcm
)
1064 * dont use SNDRV_DMA_TYPE_DEV, since it will oops the SH kernel
1065 * in MMAP mode (i.e. aplay -M)
1067 return snd_pcm_lib_preallocate_pages_for_all(
1069 SNDRV_DMA_TYPE_CONTINUOUS
,
1070 snd_dma_continuous_data(GFP_KERNEL
),
1071 PREALLOC_BUFFER
, PREALLOC_BUFFER_MAX
);
1078 static struct snd_soc_dai_driver fsi_soc_dai
[] = {
1083 .formats
= FSI_FMTS
,
1089 .formats
= FSI_FMTS
,
1093 .ops
= &fsi_dai_ops
,
1099 .formats
= FSI_FMTS
,
1105 .formats
= FSI_FMTS
,
1109 .ops
= &fsi_dai_ops
,
1113 static struct snd_soc_platform_driver fsi_soc_platform
= {
1114 .ops
= &fsi_pcm_ops
,
1115 .pcm_new
= fsi_pcm_new
,
1116 .pcm_free
= fsi_pcm_free
,
1123 static int fsi_probe(struct platform_device
*pdev
)
1125 struct fsi_master
*master
;
1126 const struct platform_device_id
*id_entry
;
1127 struct resource
*res
;
1131 id_entry
= pdev
->id_entry
;
1133 dev_err(&pdev
->dev
, "unknown fsi device\n");
1137 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1138 irq
= platform_get_irq(pdev
, 0);
1139 if (!res
|| (int)irq
<= 0) {
1140 dev_err(&pdev
->dev
, "Not enough FSI platform resources.\n");
1145 master
= kzalloc(sizeof(*master
), GFP_KERNEL
);
1147 dev_err(&pdev
->dev
, "Could not allocate master\n");
1152 master
->base
= ioremap_nocache(res
->start
, resource_size(res
));
1153 if (!master
->base
) {
1155 dev_err(&pdev
->dev
, "Unable to ioremap FSI registers.\n");
1159 /* master setting */
1161 master
->info
= pdev
->dev
.platform_data
;
1162 master
->core
= (struct fsi_core
*)id_entry
->driver_data
;
1163 spin_lock_init(&master
->lock
);
1166 master
->fsia
.base
= master
->base
;
1167 master
->fsia
.master
= master
;
1168 master
->fsia
.mst_ctrl
= A_MST_CTLR
;
1171 master
->fsib
.base
= master
->base
+ 0x40;
1172 master
->fsib
.master
= master
;
1173 master
->fsib
.mst_ctrl
= B_MST_CTLR
;
1175 pm_runtime_enable(&pdev
->dev
);
1176 pm_runtime_resume(&pdev
->dev
);
1177 dev_set_drvdata(&pdev
->dev
, master
);
1179 fsi_soft_all_reset(master
);
1181 ret
= request_irq(irq
, &fsi_interrupt
, IRQF_DISABLED
,
1182 id_entry
->name
, master
);
1184 dev_err(&pdev
->dev
, "irq request err\n");
1188 ret
= snd_soc_register_platform(&pdev
->dev
, &fsi_soc_platform
);
1190 dev_err(&pdev
->dev
, "cannot snd soc register\n");
1194 return snd_soc_register_dais(&pdev
->dev
, fsi_soc_dai
, ARRAY_SIZE(fsi_soc_dai
));
1197 free_irq(irq
, master
);
1199 iounmap(master
->base
);
1200 pm_runtime_disable(&pdev
->dev
);
1208 static int fsi_remove(struct platform_device
*pdev
)
1210 struct fsi_master
*master
;
1212 master
= dev_get_drvdata(&pdev
->dev
);
1214 snd_soc_unregister_dais(&pdev
->dev
, ARRAY_SIZE(fsi_soc_dai
));
1215 snd_soc_unregister_platform(&pdev
->dev
);
1217 pm_runtime_disable(&pdev
->dev
);
1219 free_irq(master
->irq
, master
);
1221 iounmap(master
->base
);
1227 static int fsi_runtime_nop(struct device
*dev
)
1229 /* Runtime PM callback shared between ->runtime_suspend()
1230 * and ->runtime_resume(). Simply returns success.
1232 * This driver re-initializes all registers after
1233 * pm_runtime_get_sync() anyway so there is no need
1234 * to save and restore registers here.
1239 static struct dev_pm_ops fsi_pm_ops
= {
1240 .runtime_suspend
= fsi_runtime_nop
,
1241 .runtime_resume
= fsi_runtime_nop
,
1244 static struct fsi_core fsi1_core
= {
1253 static struct fsi_core fsi2_core
= {
1257 .int_st
= CPU_INT_ST
,
1262 static struct platform_device_id fsi_id_table
[] = {
1263 { "sh_fsi", (kernel_ulong_t
)&fsi1_core
},
1264 { "sh_fsi2", (kernel_ulong_t
)&fsi2_core
},
1267 MODULE_DEVICE_TABLE(platform
, fsi_id_table
);
1269 static struct platform_driver fsi_driver
= {
1271 .name
= "fsi-pcm-audio",
1275 .remove
= fsi_remove
,
1276 .id_table
= fsi_id_table
,
1279 static int __init
fsi_mobile_init(void)
1281 return platform_driver_register(&fsi_driver
);
1284 static void __exit
fsi_mobile_exit(void)
1286 platform_driver_unregister(&fsi_driver
);
1289 module_init(fsi_mobile_init
);
1290 module_exit(fsi_mobile_exit
);
1292 MODULE_LICENSE("GPL");
1293 MODULE_DESCRIPTION("SuperH onchip FSI audio driver");
1294 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");