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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2010-01-22 13:09:03 -0500
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-01-25 09:52:20 -0500
commit895d4509d069f0706427ca75fcf0929ed136d0d7 (patch)
tree9eadaf136a8903d9279c3967b62efbefe5248366
parent6c2fb6a8d8c43544e7665859f29373c98d17df75 (diff)
ASoC: add DAI and platform / DMA drivers for SH SIU
Several SuperH platforms, including sh7722, sh7343, sh7354, sh7367 include a Sound Interface Unit (SIU). This patch adds DAI and platform / DMA drivers for this interface. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat
-rw-r--r--arch/sh/include/asm/siu.h26
-rw-r--r--sound/soc/sh/Kconfig6
-rw-r--r--sound/soc/sh/Makefile2
-rw-r--r--sound/soc/sh/siu.h193
-rw-r--r--sound/soc/sh/siu_dai.c847
-rw-r--r--sound/soc/sh/siu_pcm.c616
6 files changed, 1690 insertions, 0 deletions
diff --git a/arch/sh/include/asm/siu.h b/arch/sh/include/asm/siu.h
new file mode 100644
index 000000000000..57565a3b551f
--- /dev/null
+++ b/arch/sh/include/asm/siu.h
@@ -0,0 +1,26 @@
1/*
2 * platform header for the SIU ASoC driver
3 *
4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef ASM_SIU_H
12#define ASM_SIU_H
13
14#include <asm/dma-sh.h>
15
16struct device;
17
18struct siu_platform {
19 struct device *dma_dev;
20 enum sh_dmae_slave_chan_id dma_slave_tx_a;
21 enum sh_dmae_slave_chan_id dma_slave_rx_a;
22 enum sh_dmae_slave_chan_id dma_slave_tx_b;
23 enum sh_dmae_slave_chan_id dma_slave_rx_b;
24};
25
26#endif /* ASM_SIU_H */
diff --git a/sound/soc/sh/Kconfig b/sound/soc/sh/Kconfig
index 8072a6d1c4db..3f1cd5503342 100644
--- a/sound/soc/sh/Kconfig
+++ b/sound/soc/sh/Kconfig
@@ -26,6 +26,12 @@ config SND_SOC_SH4_FSI
26 help 26 help
27 This option enables FSI sound support 27 This option enables FSI sound support
28 28
29config SND_SOC_SH4_SIU
30 tristate
31 depends on (SUPERH || ARCH_SHMOBILE) && HAVE_CLK
32 select DMADEVICES
33 select SH_DMAE
34
29## 35##
30## Boards 36## Boards
31## 37##
diff --git a/sound/soc/sh/Makefile b/sound/soc/sh/Makefile
index 1d0ec0af74b7..5a97d2539d84 100644
--- a/sound/soc/sh/Makefile
+++ b/sound/soc/sh/Makefile
@@ -6,9 +6,11 @@ obj-$(CONFIG_SND_SOC_PCM_SH7760) += snd-soc-dma-sh7760.o
6snd-soc-hac-objs := hac.o 6snd-soc-hac-objs := hac.o
7snd-soc-ssi-objs := ssi.o 7snd-soc-ssi-objs := ssi.o
8snd-soc-fsi-objs := fsi.o 8snd-soc-fsi-objs := fsi.o
9snd-soc-siu-objs := siu_pcm.o siu_dai.o
9obj-$(CONFIG_SND_SOC_SH4_HAC) += snd-soc-hac.o 10obj-$(CONFIG_SND_SOC_SH4_HAC) += snd-soc-hac.o
10obj-$(CONFIG_SND_SOC_SH4_SSI) += snd-soc-ssi.o 11obj-$(CONFIG_SND_SOC_SH4_SSI) += snd-soc-ssi.o
11obj-$(CONFIG_SND_SOC_SH4_FSI) += snd-soc-fsi.o 12obj-$(CONFIG_SND_SOC_SH4_FSI) += snd-soc-fsi.o
13obj-$(CONFIG_SND_SOC_SH4_SIU) += snd-soc-siu.o
12 14
13## boards 15## boards
14snd-soc-sh7760-ac97-objs := sh7760-ac97.o 16snd-soc-sh7760-ac97-objs := sh7760-ac97.o
diff --git a/sound/soc/sh/siu.h b/sound/soc/sh/siu.h
new file mode 100644
index 000000000000..9cc04ab2bce7
--- /dev/null
+++ b/sound/soc/sh/siu.h
@@ -0,0 +1,193 @@
1/*
2 * siu.h - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
3 *
4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#ifndef SIU_H
23#define SIU_H
24
25/* Common kernel and user-space firmware-building defines and types */
26
27#define YRAM0_SIZE (0x0040 / 4) /* 16 */
28#define YRAM1_SIZE (0x0080 / 4) /* 32 */
29#define YRAM2_SIZE (0x0040 / 4) /* 16 */
30#define YRAM3_SIZE (0x0080 / 4) /* 32 */
31#define YRAM4_SIZE (0x0080 / 4) /* 32 */
32#define YRAM_DEF_SIZE (YRAM0_SIZE + YRAM1_SIZE + YRAM2_SIZE + \
33 YRAM3_SIZE + YRAM4_SIZE)
34#define YRAM_FIR_SIZE (0x0400 / 4) /* 256 */
35#define YRAM_IIR_SIZE (0x0200 / 4) /* 128 */
36
37#define XRAM0_SIZE (0x0400 / 4) /* 256 */
38#define XRAM1_SIZE (0x0200 / 4) /* 128 */
39#define XRAM2_SIZE (0x0200 / 4) /* 128 */
40
41/* PRAM program array size */
42#define PRAM0_SIZE (0x0100 / 4) /* 64 */
43#define PRAM1_SIZE ((0x2000 - 0x0100) / 4) /* 1984 */
44
45#include <linux/types.h>
46
47struct siu_spb_param {
48 __u32 ab1a; /* input FIFO address */
49 __u32 ab0a; /* output FIFO address */
50 __u32 dir; /* 0=the ather except CPUOUTPUT, 1=CPUINPUT */
51 __u32 event; /* SPB program starting conditions */
52 __u32 stfifo; /* STFIFO register setting value */
53 __u32 trdat; /* TRDAT register setting value */
54};
55
56struct siu_firmware {
57 __u32 yram_fir_coeff[YRAM_FIR_SIZE];
58 __u32 pram0[PRAM0_SIZE];
59 __u32 pram1[PRAM1_SIZE];
60 __u32 yram0[YRAM0_SIZE];
61 __u32 yram1[YRAM1_SIZE];
62 __u32 yram2[YRAM2_SIZE];
63 __u32 yram3[YRAM3_SIZE];
64 __u32 yram4[YRAM4_SIZE];
65 __u32 spbpar_num;
66 struct siu_spb_param spbpar[32];
67};
68
69#ifdef __KERNEL__
70
71#include <linux/dmaengine.h>
72#include <linux/interrupt.h>
73#include <linux/io.h>
74
75#include <asm/dma-sh.h>
76
77#include <sound/core.h>
78#include <sound/pcm.h>
79#include <sound/soc-dai.h>
80
81#define SIU_PERIOD_BYTES_MAX 8192 /* DMA transfer/period size */
82#define SIU_PERIOD_BYTES_MIN 256 /* DMA transfer/period size */
83#define SIU_PERIODS_MAX 64 /* Max periods in buffer */
84#define SIU_PERIODS_MIN 4 /* Min periods in buffer */
85#define SIU_BUFFER_BYTES_MAX (SIU_PERIOD_BYTES_MAX * SIU_PERIODS_MAX)
86
87/* SIU ports: only one can be used at a time */
88enum {
89 SIU_PORT_A,
90 SIU_PORT_B,
91 SIU_PORT_NUM,
92};
93
94/* SIU clock configuration */
95enum {
96 SIU_CLKA_PLL,
97 SIU_CLKA_EXT,
98 SIU_CLKB_PLL,
99 SIU_CLKB_EXT
100};
101
102struct siu_info {
103 int port_id;
104 u32 __iomem *pram;
105 u32 __iomem *xram;
106 u32 __iomem *yram;
107 u32 __iomem *reg;
108 struct siu_firmware fw;
109};
110
111struct siu_stream {
112 struct tasklet_struct tasklet;
113 struct snd_pcm_substream *substream;
114 snd_pcm_format_t format;
115 size_t buf_bytes;
116 size_t period_bytes;
117 int cur_period; /* Period currently in dma */
118 u32 volume;
119 snd_pcm_sframes_t xfer_cnt; /* Number of frames */
120 u8 rw_flg; /* transfer status */
121 /* DMA status */
122 struct dma_chan *chan; /* DMA channel */
123 struct dma_async_tx_descriptor *tx_desc;
124 dma_cookie_t cookie;
125 struct sh_dmae_slave param;
126};
127
128struct siu_port {
129 unsigned long play_cap; /* Used to track full duplex */
130 struct snd_pcm *pcm;
131 struct siu_stream playback;
132 struct siu_stream capture;
133 u32 stfifo; /* STFIFO value from firmware */
134 u32 trdat; /* TRDAT value from firmware */
135};
136
137extern struct siu_port *siu_ports[SIU_PORT_NUM];
138
139static inline struct siu_port *siu_port_info(struct snd_pcm_substream *substream)
140{
141 struct platform_device *pdev =
142 to_platform_device(substream->pcm->card->dev);
143 return siu_ports[pdev->id];
144}
145
146/* Register access */
147static inline void siu_write32(u32 __iomem *addr, u32 val)
148{
149 __raw_writel(val, addr);
150}
151
152static inline u32 siu_read32(u32 __iomem *addr)
153{
154 return __raw_readl(addr);
155}
156
157/* SIU registers */
158#define SIU_IFCTL (0x000 / sizeof(u32))
159#define SIU_SRCTL (0x004 / sizeof(u32))
160#define SIU_SFORM (0x008 / sizeof(u32))
161#define SIU_CKCTL (0x00c / sizeof(u32))
162#define SIU_TRDAT (0x010 / sizeof(u32))
163#define SIU_STFIFO (0x014 / sizeof(u32))
164#define SIU_DPAK (0x01c / sizeof(u32))
165#define SIU_CKREV (0x020 / sizeof(u32))
166#define SIU_EVNTC (0x028 / sizeof(u32))
167#define SIU_SBCTL (0x040 / sizeof(u32))
168#define SIU_SBPSET (0x044 / sizeof(u32))
169#define SIU_SBFSTS (0x068 / sizeof(u32))
170#define SIU_SBDVCA (0x06c / sizeof(u32))
171#define SIU_SBDVCB (0x070 / sizeof(u32))
172#define SIU_SBACTIV (0x074 / sizeof(u32))
173#define SIU_DMAIA (0x090 / sizeof(u32))
174#define SIU_DMAIB (0x094 / sizeof(u32))
175#define SIU_DMAOA (0x098 / sizeof(u32))
176#define SIU_DMAOB (0x09c / sizeof(u32))
177#define SIU_DMAML (0x0a0 / sizeof(u32))
178#define SIU_SPSTS (0x0cc / sizeof(u32))
179#define SIU_SPCTL (0x0d0 / sizeof(u32))
180#define SIU_BRGASEL (0x100 / sizeof(u32))
181#define SIU_BRRA (0x104 / sizeof(u32))
182#define SIU_BRGBSEL (0x108 / sizeof(u32))
183#define SIU_BRRB (0x10c / sizeof(u32))
184
185extern struct snd_soc_platform siu_platform;
186extern struct snd_soc_dai siu_i2s_dai;
187
188int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card);
189void siu_free_port(struct siu_port *port_info);
190
191#endif
192
193#endif /* SIU_H */
diff --git a/sound/soc/sh/siu_dai.c b/sound/soc/sh/siu_dai.c
new file mode 100644
index 000000000000..5452d19607e1
--- /dev/null
+++ b/sound/soc/sh/siu_dai.c
@@ -0,0 +1,847 @@
1/*
2 * siu_dai.c - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
3 *
4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include <linux/delay.h>
23#include <linux/firmware.h>
24#include <linux/pm_runtime.h>
25
26#include <asm/clock.h>
27#include <asm/siu.h>
28
29#include <sound/control.h>
30#include <sound/soc-dai.h>
31
32#include "siu.h"
33
34/* Board specifics */
35#if defined(CONFIG_CPU_SUBTYPE_SH7722)
36# define SIU_MAX_VOLUME 0x1000
37#else
38# define SIU_MAX_VOLUME 0x7fff
39#endif
40
41#define PRAM_SIZE 0x2000
42#define XRAM_SIZE 0x800
43#define YRAM_SIZE 0x800
44
45#define XRAM_OFFSET 0x4000
46#define YRAM_OFFSET 0x6000
47#define REG_OFFSET 0xc000
48
49#define PLAYBACK_ENABLED 1
50#define CAPTURE_ENABLED 2
51
52#define VOLUME_CAPTURE 0
53#define VOLUME_PLAYBACK 1
54#define DFLT_VOLUME_LEVEL 0x08000800
55
56/*
57 * SPDIF is only available on port A and on some SIU implementations it is only
58 * available for input. Due to the lack of hardware to test it, SPDIF is left
59 * disabled in this driver version
60 */
61struct format_flag {
62 u32 i2s;
63 u32 pcm;
64 u32 spdif;
65 u32 mask;
66};
67
68struct port_flag {
69 struct format_flag playback;
70 struct format_flag capture;
71};
72
73static struct port_flag siu_flags[SIU_PORT_NUM] = {
74 [SIU_PORT_A] = {
75 .playback = {
76 .i2s = 0x50000000,
77 .pcm = 0x40000000,
78 .spdif = 0x80000000, /* not on all SIU versions */
79 .mask = 0xd0000000,
80 },
81 .capture = {
82 .i2s = 0x05000000,
83 .pcm = 0x04000000,
84 .spdif = 0x08000000,
85 .mask = 0x0d000000,
86 },
87 },
88 [SIU_PORT_B] = {
89 .playback = {
90 .i2s = 0x00500000,
91 .pcm = 0x00400000,
92 .spdif = 0, /* impossible - turn off */
93 .mask = 0x00500000,
94 },
95 .capture = {
96 .i2s = 0x00050000,
97 .pcm = 0x00040000,
98 .spdif = 0, /* impossible - turn off */
99 .mask = 0x00050000,
100 },
101 },
102};
103
104static void siu_dai_start(struct siu_port *port_info)
105{
106 struct siu_info *info = siu_i2s_dai.private_data;
107 u32 __iomem *base = info->reg;
108
109 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
110
111 /* Turn on SIU clock */
112 pm_runtime_get_sync(siu_i2s_dai.dev);
113
114 /* Issue software reset to siu */
115 siu_write32(base + SIU_SRCTL, 0);
116
117 /* Wait for the reset to take effect */
118 udelay(1);
119
120 port_info->stfifo = 0;
121 port_info->trdat = 0;
122
123 /* portA, portB, SIU operate */
124 siu_write32(base + SIU_SRCTL, 0x301);
125
126 /* portA=256fs, portB=256fs */
127 siu_write32(base + SIU_CKCTL, 0x40400000);
128
129 /* portA's BRG does not divide SIUCKA */
130 siu_write32(base + SIU_BRGASEL, 0);
131 siu_write32(base + SIU_BRRA, 0);
132
133 /* portB's BRG divides SIUCKB by half */
134 siu_write32(base + SIU_BRGBSEL, 1);
135 siu_write32(base + SIU_BRRB, 0);
136
137 siu_write32(base + SIU_IFCTL, 0x44440000);
138
139 /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */
140 siu_write32(base + SIU_SFORM, 0x0c0c0000);
141
142 /*
143 * Volume levels: looks like the DSP firmware implements volume controls
144 * differently from what's described in the datasheet
145 */
146 siu_write32(base + SIU_SBDVCA, port_info->playback.volume);
147 siu_write32(base + SIU_SBDVCB, port_info->capture.volume);
148}
149
150static void siu_dai_stop(void)
151{
152 struct siu_info *info = siu_i2s_dai.private_data;
153 u32 __iomem *base = info->reg;
154
155 /* SIU software reset */
156 siu_write32(base + SIU_SRCTL, 0);
157
158 /* Turn off SIU clock */
159 pm_runtime_put_sync(siu_i2s_dai.dev);
160}
161
162static void siu_dai_spbAselect(struct siu_port *port_info)
163{
164 struct siu_info *info = siu_i2s_dai.private_data;
165 struct siu_firmware *fw = &info->fw;
166 u32 *ydef = fw->yram0;
167 u32 idx;
168
169 /* path A use */
170 if (!info->port_id)
171 idx = 1; /* portA */
172 else
173 idx = 2; /* portB */
174
175 ydef[0] = (fw->spbpar[idx].ab1a << 16) |
176 (fw->spbpar[idx].ab0a << 8) |
177 (fw->spbpar[idx].dir << 7) | 3;
178 ydef[1] = fw->yram0[1]; /* 0x03000300 */
179 ydef[2] = (16 / 2) << 24;
180 ydef[3] = fw->yram0[3]; /* 0 */
181 ydef[4] = fw->yram0[4]; /* 0 */
182 ydef[7] = fw->spbpar[idx].event;
183 port_info->stfifo |= fw->spbpar[idx].stfifo;
184 port_info->trdat |= fw->spbpar[idx].trdat;
185}
186
187static void siu_dai_spbBselect(struct siu_port *port_info)
188{
189 struct siu_info *info = siu_i2s_dai.private_data;
190 struct siu_firmware *fw = &info->fw;
191 u32 *ydef = fw->yram0;
192 u32 idx;
193
194 /* path B use */
195 if (!info->port_id)
196 idx = 7; /* portA */
197 else
198 idx = 8; /* portB */
199
200 ydef[5] = (fw->spbpar[idx].ab1a << 16) |
201 (fw->spbpar[idx].ab0a << 8) | 1;
202 ydef[6] = fw->spbpar[idx].event;
203 port_info->stfifo |= fw->spbpar[idx].stfifo;
204 port_info->trdat |= fw->spbpar[idx].trdat;
205}
206
207static void siu_dai_open(struct siu_stream *siu_stream)
208{
209 struct siu_info *info = siu_i2s_dai.private_data;
210 u32 __iomem *base = info->reg;
211 u32 srctl, ifctl;
212
213 srctl = siu_read32(base + SIU_SRCTL);
214 ifctl = siu_read32(base + SIU_IFCTL);
215
216 switch (info->port_id) {
217 case SIU_PORT_A:
218 /* portA operates */
219 srctl |= 0x200;
220 ifctl &= ~0xc2;
221 break;
222 case SIU_PORT_B:
223 /* portB operates */
224 srctl |= 0x100;
225 ifctl &= ~0x31;
226 break;
227 }
228
229 siu_write32(base + SIU_SRCTL, srctl);
230 /* Unmute and configure portA */
231 siu_write32(base + SIU_IFCTL, ifctl);
232}
233
234/*
235 * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower
236 * packing is supported
237 */
238static void siu_dai_pcmdatapack(struct siu_stream *siu_stream)
239{
240 struct siu_info *info = siu_i2s_dai.private_data;
241 u32 __iomem *base = info->reg;
242 u32 dpak;
243
244 dpak = siu_read32(base + SIU_DPAK);
245
246 switch (info->port_id) {
247 case SIU_PORT_A:
248 dpak &= ~0xc0000000;
249 break;
250 case SIU_PORT_B:
251 dpak &= ~0x00c00000;
252 break;
253 }
254
255 siu_write32(base + SIU_DPAK, dpak);
256}
257
258static int siu_dai_spbstart(struct siu_port *port_info)
259{
260 struct siu_info *info = siu_i2s_dai.private_data;
261 u32 __iomem *base = info->reg;
262 struct siu_firmware *fw = &info->fw;
263 u32 *ydef = fw->yram0;
264 int cnt;
265 u32 __iomem *add;
266 u32 *ptr;
267
268 /* Load SPB Program in PRAM */
269 ptr = fw->pram0;
270 add = info->pram;
271 for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++)
272 siu_write32(add, *ptr);
273
274 ptr = fw->pram1;
275 add = info->pram + (0x0100 / sizeof(u32));
276 for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++)
277 siu_write32(add, *ptr);
278
279 /* XRAM initialization */
280 add = info->xram;
281 for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++)
282 siu_write32(add, 0);
283
284 /* YRAM variable area initialization */
285 add = info->yram;
286 for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++)
287 siu_write32(add, ydef[cnt]);
288
289 /* YRAM FIR coefficient area initialization */
290 add = info->yram + (0x0200 / sizeof(u32));
291 for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++)
292 siu_write32(add, fw->yram_fir_coeff[cnt]);
293
294 /* YRAM IIR coefficient area initialization */
295 add = info->yram + (0x0600 / sizeof(u32));
296 for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++)
297 siu_write32(add, 0);
298
299 siu_write32(base + SIU_TRDAT, port_info->trdat);
300 port_info->trdat = 0x0;
301
302
303 /* SPB start condition: software */
304 siu_write32(base + SIU_SBACTIV, 0);
305 /* Start SPB */
306 siu_write32(base + SIU_SBCTL, 0xc0000000);
307 /* Wait for program to halt */
308 cnt = 0x10000;
309 while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000)
310 cpu_relax();
311
312 if (!cnt)
313 return -EBUSY;
314
315 /* SPB program start address setting */
316 siu_write32(base + SIU_SBPSET, 0x00400000);
317 /* SPB hardware start(FIFOCTL source) */
318 siu_write32(base + SIU_SBACTIV, 0xc0000000);
319
320 return 0;
321}
322
323static void siu_dai_spbstop(struct siu_port *port_info)
324{
325 struct siu_info *info = siu_i2s_dai.private_data;
326 u32 __iomem *base = info->reg;
327
328 siu_write32(base + SIU_SBACTIV, 0);
329 /* SPB stop */
330 siu_write32(base + SIU_SBCTL, 0);
331
332 port_info->stfifo = 0;
333}
334
335/* API functions */
336
337/* Playback and capture hardware properties are identical */
338static struct snd_pcm_hardware siu_dai_pcm_hw = {
339 .info = SNDRV_PCM_INFO_INTERLEAVED,
340 .formats = SNDRV_PCM_FMTBIT_S16,
341 .rates = SNDRV_PCM_RATE_8000_48000,
342 .rate_min = 8000,
343 .rate_max = 48000,
344 .channels_min = 2,
345 .channels_max = 2,
346 .buffer_bytes_max = SIU_BUFFER_BYTES_MAX,
347 .period_bytes_min = SIU_PERIOD_BYTES_MIN,
348 .period_bytes_max = SIU_PERIOD_BYTES_MAX,
349 .periods_min = SIU_PERIODS_MIN,
350 .periods_max = SIU_PERIODS_MAX,
351};
352
353static int siu_dai_info_volume(struct snd_kcontrol *kctrl,
354 struct snd_ctl_elem_info *uinfo)
355{
356 struct siu_port *port_info = snd_kcontrol_chip(kctrl);
357
358 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
359
360 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
361 uinfo->count = 2;
362 uinfo->value.integer.min = 0;
363 uinfo->value.integer.max = SIU_MAX_VOLUME;
364
365 return 0;
366}
367
368static int siu_dai_get_volume(struct snd_kcontrol *kctrl,
369 struct snd_ctl_elem_value *ucontrol)
370{
371 struct siu_port *port_info = snd_kcontrol_chip(kctrl);
372 struct device *dev = port_info->pcm->card->dev;
373 u32 vol;
374
375 dev_dbg(dev, "%s\n", __func__);
376
377 switch (kctrl->private_value) {
378 case VOLUME_PLAYBACK:
379 /* Playback is always on port 0 */
380 vol = port_info->playback.volume;
381 ucontrol->value.integer.value[0] = vol & 0xffff;
382 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
383 break;
384 case VOLUME_CAPTURE:
385 /* Capture is always on port 1 */
386 vol = port_info->capture.volume;
387 ucontrol->value.integer.value[0] = vol & 0xffff;
388 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
389 break;
390 default:
391 dev_err(dev, "%s() invalid private_value=%ld\n",
392 __func__, kctrl->private_value);
393 return -EINVAL;
394 }
395
396 return 0;
397}
398
399static int siu_dai_put_volume(struct snd_kcontrol *kctrl,
400 struct snd_ctl_elem_value *ucontrol)
401{
402 struct siu_port *port_info = snd_kcontrol_chip(kctrl);
403 struct device *dev = port_info->pcm->card->dev;
404 struct siu_info *info = siu_i2s_dai.private_data;
405 u32 __iomem *base = info->reg;
406 u32 new_vol;
407 u32 cur_vol;
408
409 dev_dbg(dev, "%s\n", __func__);
410
411 if (ucontrol->value.integer.value[0] < 0 ||
412 ucontrol->value.integer.value[0] > SIU_MAX_VOLUME ||
413 ucontrol->value.integer.value[1] < 0 ||
414 ucontrol->value.integer.value[1] > SIU_MAX_VOLUME)
415 return -EINVAL;
416
417 new_vol = ucontrol->value.integer.value[0] |
418 ucontrol->value.integer.value[1] << 16;
419
420 /* See comment above - DSP firmware implementation */
421 switch (kctrl->private_value) {
422 case VOLUME_PLAYBACK:
423 /* Playback is always on port 0 */
424 cur_vol = port_info->playback.volume;
425 siu_write32(base + SIU_SBDVCA, new_vol);
426 port_info->playback.volume = new_vol;
427 break;
428 case VOLUME_CAPTURE:
429 /* Capture is always on port 1 */
430 cur_vol = port_info->capture.volume;
431 siu_write32(base + SIU_SBDVCB, new_vol);
432 port_info->capture.volume = new_vol;
433 break;
434 default:
435 dev_err(dev, "%s() invalid private_value=%ld\n",
436 __func__, kctrl->private_value);
437 return -EINVAL;
438 }
439
440 if (cur_vol != new_vol)
441 return 1;
442
443 return 0;
444}
445
446static struct snd_kcontrol_new playback_controls = {
447 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
448 .name = "PCM Playback Volume",
449 .index = 0,
450 .info = siu_dai_info_volume,
451 .get = siu_dai_get_volume,
452 .put = siu_dai_put_volume,
453 .private_value = VOLUME_PLAYBACK,
454};
455
456static struct snd_kcontrol_new capture_controls = {
457 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
458 .name = "PCM Capture Volume",
459 .index = 0,
460 .info = siu_dai_info_volume,
461 .get = siu_dai_get_volume,
462 .put = siu_dai_put_volume,
463 .private_value = VOLUME_CAPTURE,
464};
465
466int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card)
467{
468 struct device *dev = card->dev;
469 struct snd_kcontrol *kctrl;
470 int ret;
471
472 *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL);
473 if (!*port_info)
474 return -ENOMEM;
475
476 dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info);
477
478 (*port_info)->playback.volume = DFLT_VOLUME_LEVEL;
479 (*port_info)->capture.volume = DFLT_VOLUME_LEVEL;
480
481 /*
482 * Add mixer support. The SPB is used to change the volume. Both
483 * ports use the same SPB. Therefore, we only register one
484 * control instance since it will be used by both channels.
485 * In error case we continue without controls.
486 */
487 kctrl = snd_ctl_new1(&playback_controls, *port_info);
488 ret = snd_ctl_add(card, kctrl);
489 if (ret < 0)
490 dev_err(dev,
491 "failed to add playback controls %p port=%d err=%d\n",
492 kctrl, port, ret);
493
494 kctrl = snd_ctl_new1(&capture_controls, *port_info);
495 ret = snd_ctl_add(card, kctrl);
496 if (ret < 0)
497 dev_err(dev,
498 "failed to add capture controls %p port=%d err=%d\n",
499 kctrl, port, ret);
500
501 return 0;
502}
503
504void siu_free_port(struct siu_port *port_info)
505{
506 kfree(port_info);
507}
508
509static int siu_dai_startup(struct snd_pcm_substream *substream,
510 struct snd_soc_dai *dai)
511{
512 struct siu_info *info = siu_i2s_dai.private_data;
513 struct snd_pcm_runtime *rt = substream->runtime;
514 struct siu_port *port_info = siu_port_info(substream);
515 int ret;
516
517 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
518 info->port_id, port_info);
519
520 snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw);
521
522 ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
523 if (unlikely(ret < 0))
524 return ret;
525
526 siu_dai_start(port_info);
527
528 return 0;
529}
530
531static void siu_dai_shutdown(struct snd_pcm_substream *substream,
532 struct snd_soc_dai *dai)
533{
534 struct siu_info *info = siu_i2s_dai.private_data;
535 struct siu_port *port_info = siu_port_info(substream);
536
537 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
538 info->port_id, port_info);
539
540 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
541 port_info->play_cap &= ~PLAYBACK_ENABLED;
542 else
543 port_info->play_cap &= ~CAPTURE_ENABLED;
544
545 /* Stop the siu if the other stream is not using it */
546 if (!port_info->play_cap) {
547 /* during stmread or stmwrite ? */
548 BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg);
549 siu_dai_spbstop(port_info);
550 siu_dai_stop();
551 }
552}
553
554/* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */
555static int siu_dai_prepare(struct snd_pcm_substream *substream,
556 struct snd_soc_dai *dai)
557{
558 struct siu_info *info = siu_i2s_dai.private_data;
559 struct snd_pcm_runtime *rt = substream->runtime;
560 struct siu_port *port_info = siu_port_info(substream);
561 struct siu_stream *siu_stream;
562 int self, ret;
563
564 dev_dbg(substream->pcm->card->dev,
565 "%s: port %d, active streams %lx, %d channels\n",
566 __func__, info->port_id, port_info->play_cap, rt->channels);
567
568 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
569 self = PLAYBACK_ENABLED;
570 siu_stream = &port_info->playback;
571 } else {
572 self = CAPTURE_ENABLED;
573 siu_stream = &port_info->capture;
574 }
575
576 /* Set up the siu if not already done */
577 if (!port_info->play_cap) {
578 siu_stream->rw_flg = 0; /* stream-data transfer flag */
579
580 siu_dai_spbAselect(port_info);
581 siu_dai_spbBselect(port_info);
582
583 siu_dai_open(siu_stream);
584
585 siu_dai_pcmdatapack(siu_stream);
586
587 ret = siu_dai_spbstart(port_info);
588 if (ret < 0)
589 goto fail;
590 }
591
592 port_info->play_cap |= self;
593
594fail:
595 return ret;
596}
597
598/*
599 * SIU can set bus format to I2S / PCM / SPDIF independently for playback and
600 * capture, however, the current API sets the bus format globally for a DAI.
601 */
602static int siu_dai_set_fmt(struct snd_soc_dai *dai,
603 unsigned int fmt)
604{
605 struct siu_info *info = siu_i2s_dai.private_data;
606 u32 __iomem *base = info->reg;
607 u32 ifctl;
608
609 dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n",
610 __func__, fmt, info->port_id);
611
612 if (info->port_id < 0)
613 return -ENODEV;
614
615 /* Here select between I2S / PCM / SPDIF */
616 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
617 case SND_SOC_DAIFMT_I2S:
618 ifctl = siu_flags[info->port_id].playback.i2s |
619 siu_flags[info->port_id].capture.i2s;
620 break;
621 case SND_SOC_DAIFMT_LEFT_J:
622 ifctl = siu_flags[info->port_id].playback.pcm |
623 siu_flags[info->port_id].capture.pcm;
624 break;
625 /* SPDIF disabled - see comment at the top */
626 default:
627 return -EINVAL;
628 }
629
630 ifctl |= ~(siu_flags[info->port_id].playback.mask |
631 siu_flags[info->port_id].capture.mask) &
632 siu_read32(base + SIU_IFCTL);
633 siu_write32(base + SIU_IFCTL, ifctl);
634
635 return 0;
636}
637
638static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
639 unsigned int freq, int dir)
640{
641 struct clk *siu_clk, *parent_clk;
642 char *siu_name, *parent_name;
643 int ret;
644
645 if (dir != SND_SOC_CLOCK_IN)
646 return -EINVAL;
647
648 dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id);
649
650 switch (clk_id) {
651 case SIU_CLKA_PLL:
652 siu_name = "siua_clk";
653 parent_name = "pll_clk";
654 break;
655 case SIU_CLKA_EXT:
656 siu_name = "siua_clk";
657 parent_name = "siumcka_clk";
658 break;
659 case SIU_CLKB_PLL:
660 siu_name = "siub_clk";
661 parent_name = "pll_clk";
662 break;
663 case SIU_CLKB_EXT:
664 siu_name = "siub_clk";
665 parent_name = "siumckb_clk";
666 break;
667 default:
668 return -EINVAL;
669 }
670
671 siu_clk = clk_get(siu_i2s_dai.dev, siu_name);
672 if (IS_ERR(siu_clk))
673 return PTR_ERR(siu_clk);
674
675 parent_clk = clk_get(siu_i2s_dai.dev, parent_name);
676 if (!IS_ERR(parent_clk)) {
677 ret = clk_set_parent(siu_clk, parent_clk);
678 if (!ret)
679 clk_set_rate(siu_clk, freq);
680 clk_put(parent_clk);
681 }
682
683 clk_put(siu_clk);
684
685 return 0;
686}
687
688static struct snd_soc_dai_ops siu_dai_ops = {
689 .startup = siu_dai_startup,
690 .shutdown = siu_dai_shutdown,
691 .prepare = siu_dai_prepare,
692 .set_sysclk = siu_dai_set_sysclk,
693 .set_fmt = siu_dai_set_fmt,
694};
695
696struct snd_soc_dai siu_i2s_dai = {
697 .name = "sh-siu",
698 .id = 0,
699 .playback = {
700 .channels_min = 2,
701 .channels_max = 2,
702 .formats = SNDRV_PCM_FMTBIT_S16,
703 .rates = SNDRV_PCM_RATE_8000_48000,
704 },
705 .capture = {
706 .channels_min = 2,
707 .channels_max = 2,
708 .formats = SNDRV_PCM_FMTBIT_S16,
709 .rates = SNDRV_PCM_RATE_8000_48000,
710 },
711 .ops = &siu_dai_ops,
712};
713EXPORT_SYMBOL_GPL(siu_i2s_dai);
714
715static int __devinit siu_probe(struct platform_device *pdev)
716{
717 const struct firmware *fw_entry;
718 struct resource *res, *region;
719 struct siu_info *info;
720 int ret;
721
722 info = kmalloc(sizeof(*info), GFP_KERNEL);
723 if (!info)
724 return -ENOMEM;
725
726 ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev);
727 if (ret)
728 goto ereqfw;
729
730 /*
731 * Loaded firmware is "const" - read only, but we have to modify it in
732 * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect()
733 */
734 memcpy(&info->fw, fw_entry->data, fw_entry->size);
735
736 release_firmware(fw_entry);
737
738 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
739 if (!res) {
740 ret = -ENODEV;
741 goto egetres;
742 }
743
744 region = request_mem_region(res->start, resource_size(res),
745 pdev->name);
746 if (!region) {
747 dev_err(&pdev->dev, "SIU region already claimed\n");
748 ret = -EBUSY;
749 goto ereqmemreg;
750 }
751
752 ret = -ENOMEM;
753 info->pram = ioremap(res->start, PRAM_SIZE);
754 if (!info->pram)
755 goto emappram;
756 info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE);
757 if (!info->xram)
758 goto emapxram;
759 info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE);
760 if (!info->yram)
761 goto emapyram;
762 info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) -
763 REG_OFFSET);
764 if (!info->reg)
765 goto emapreg;
766
767 siu_i2s_dai.dev = &pdev->dev;
768 siu_i2s_dai.private_data = info;
769
770 ret = snd_soc_register_dais(&siu_i2s_dai, 1);
771 if (ret < 0)
772 goto edaiinit;
773
774 ret = snd_soc_register_platform(&siu_platform);
775 if (ret < 0)
776 goto esocregp;
777
778 pm_runtime_enable(&pdev->dev);
779
780 return ret;
781
782esocregp:
783 snd_soc_unregister_dais(&siu_i2s_dai, 1);
784edaiinit:
785 iounmap(info->reg);
786emapreg:
787 iounmap(info->yram);
788emapyram:
789 iounmap(info->xram);
790emapxram:
791 iounmap(info->pram);
792emappram:
793 release_mem_region(res->start, resource_size(res));
794ereqmemreg:
795egetres:
796ereqfw:
797 kfree(info);
798
799 return ret;
800}
801
802static int __devexit siu_remove(struct platform_device *pdev)
803{
804 struct siu_info *info = siu_i2s_dai.private_data;
805 struct resource *res;
806
807 pm_runtime_disable(&pdev->dev);
808
809 snd_soc_unregister_platform(&siu_platform);
810 snd_soc_unregister_dais(&siu_i2s_dai, 1);
811
812 iounmap(info->reg);
813 iounmap(info->yram);
814 iounmap(info->xram);
815 iounmap(info->pram);
816 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
817 if (res)
818 release_mem_region(res->start, resource_size(res));
819 kfree(info);
820
821 return 0;
822}
823
824static struct platform_driver siu_driver = {
825 .driver = {
826 .name = "sh_siu",
827 },
828 .probe = siu_probe,
829 .remove = __devexit_p(siu_remove),
830};
831
832static int __init siu_init(void)
833{
834 return platform_driver_register(&siu_driver);
835}
836
837static void __exit siu_exit(void)
838{
839 platform_driver_unregister(&siu_driver);
840}
841
842module_init(siu_init)
843module_exit(siu_exit)
844
845MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>");
846MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver");
847MODULE_LICENSE("GPL");
diff --git a/sound/soc/sh/siu_pcm.c b/sound/soc/sh/siu_pcm.c
new file mode 100644
index 000000000000..c5efc30f0136
--- /dev/null
+++ b/sound/soc/sh/siu_pcm.c
@@ -0,0 +1,616 @@
1/*
2 * siu_pcm.c - ALSA driver for Renesas SH7343, SH7722 SIU peripheral.
3 *
4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21#include <linux/delay.h>
22#include <linux/dma-mapping.h>
23#include <linux/dmaengine.h>
24#include <linux/interrupt.h>
25#include <linux/module.h>
26#include <linux/platform_device.h>
27#include <linux/slab.h>
28
29#include <sound/control.h>
30#include <sound/core.h>
31#include <sound/pcm.h>
32#include <sound/pcm_params.h>
33#include <sound/soc-dai.h>
34
35#include <asm/dma-sh.h>
36#include <asm/siu.h>
37
38#include "siu.h"
39
40#define GET_MAX_PERIODS(buf_bytes, period_bytes) \
41 ((buf_bytes) / (period_bytes))
42#define PERIOD_OFFSET(buf_addr, period_num, period_bytes) \
43 ((buf_addr) + ((period_num) * (period_bytes)))
44
45#define RWF_STM_RD 0x01 /* Read in progress */
46#define RWF_STM_WT 0x02 /* Write in progress */
47
48struct siu_port *siu_ports[SIU_PORT_NUM];
49
50/* transfersize is number of u32 dma transfers per period */
51static int siu_pcm_stmwrite_stop(struct siu_port *port_info)
52{
53 struct siu_info *info = siu_i2s_dai.private_data;
54 u32 __iomem *base = info->reg;
55 struct siu_stream *siu_stream = &port_info->playback;
56 u32 stfifo;
57
58 if (!siu_stream->rw_flg)
59 return -EPERM;
60
61 /* output FIFO disable */
62 stfifo = siu_read32(base + SIU_STFIFO);
63 siu_write32(base + SIU_STFIFO, stfifo & ~0x0c180c18);
64 pr_debug("%s: STFIFO %x -> %x\n", __func__,
65 stfifo, stfifo & ~0x0c180c18);
66
67 /* during stmwrite clear */
68 siu_stream->rw_flg = 0;
69
70 return 0;
71}
72
73static int siu_pcm_stmwrite_start(struct siu_port *port_info)
74{
75 struct siu_stream *siu_stream = &port_info->playback;
76
77 if (siu_stream->rw_flg)
78 return -EPERM;
79
80 /* Current period in buffer */
81 port_info->playback.cur_period = 0;
82
83 /* during stmwrite flag set */
84 siu_stream->rw_flg = RWF_STM_WT;
85
86 /* DMA transfer start */
87 tasklet_schedule(&siu_stream->tasklet);
88
89 return 0;
90}
91
92static void siu_dma_tx_complete(void *arg)
93{
94 struct siu_stream *siu_stream = arg;
95
96 if (!siu_stream->rw_flg)
97 return;
98
99 /* Update completed period count */
100 if (++siu_stream->cur_period >=
101 GET_MAX_PERIODS(siu_stream->buf_bytes,
102 siu_stream->period_bytes))
103 siu_stream->cur_period = 0;
104
105 pr_debug("%s: done period #%d (%u/%u bytes), cookie %d\n",
106 __func__, siu_stream->cur_period,
107 siu_stream->cur_period * siu_stream->period_bytes,
108 siu_stream->buf_bytes, siu_stream->cookie);
109
110 tasklet_schedule(&siu_stream->tasklet);
111
112 /* Notify alsa: a period is done */
113 snd_pcm_period_elapsed(siu_stream->substream);
114}
115
116static int siu_pcm_wr_set(struct siu_port *port_info,
117 dma_addr_t buff, u32 size)
118{
119 struct siu_info *info = siu_i2s_dai.private_data;
120 u32 __iomem *base = info->reg;
121 struct siu_stream *siu_stream = &port_info->playback;
122 struct snd_pcm_substream *substream = siu_stream->substream;
123 struct device *dev = substream->pcm->card->dev;
124 struct dma_async_tx_descriptor *desc;
125 dma_cookie_t cookie;
126 struct scatterlist sg;
127 u32 stfifo;
128
129 sg_init_table(&sg, 1);
130 sg_set_page(&sg, pfn_to_page(PFN_DOWN(buff)),
131 size, offset_in_page(buff));
132 sg_dma_address(&sg) = buff;
133
134 desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan,
135 &sg, 1, DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
136 if (!desc) {
137 dev_err(dev, "Failed to allocate a dma descriptor\n");
138 return -ENOMEM;
139 }
140
141 desc->callback = siu_dma_tx_complete;
142 desc->callback_param = siu_stream;
143 cookie = desc->tx_submit(desc);
144 if (cookie < 0) {
145 dev_err(dev, "Failed to submit a dma transfer\n");
146 return cookie;
147 }
148
149 siu_stream->tx_desc = desc;
150 siu_stream->cookie = cookie;
151
152 dma_async_issue_pending(siu_stream->chan);
153
154 /* only output FIFO enable */
155 stfifo = siu_read32(base + SIU_STFIFO);
156 siu_write32(base + SIU_STFIFO, stfifo | (port_info->stfifo & 0x0c180c18));
157 dev_dbg(dev, "%s: STFIFO %x -> %x\n", __func__,
158 stfifo, stfifo | (port_info->stfifo & 0x0c180c18));
159
160 return 0;
161}
162
163static int siu_pcm_rd_set(struct siu_port *port_info,
164 dma_addr_t buff, size_t size)
165{
166 struct siu_info *info = siu_i2s_dai.private_data;
167 u32 __iomem *base = info->reg;
168 struct siu_stream *siu_stream = &port_info->capture;
169 struct snd_pcm_substream *substream = siu_stream->substream;
170 struct device *dev = substream->pcm->card->dev;
171 struct dma_async_tx_descriptor *desc;
172 dma_cookie_t cookie;
173 struct scatterlist sg;
174 u32 stfifo;
175
176 dev_dbg(dev, "%s: %u@%llx\n", __func__, size, (unsigned long long)buff);
177
178 sg_init_table(&sg, 1);
179 sg_set_page(&sg, pfn_to_page(PFN_DOWN(buff)),
180 size, offset_in_page(buff));
181 sg_dma_address(&sg) = buff;
182
183 desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan,
184 &sg, 1, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
185 if (!desc) {
186 dev_err(dev, "Failed to allocate dma descriptor\n");
187 return -ENOMEM;
188 }
189
190 desc->callback = siu_dma_tx_complete;
191 desc->callback_param = siu_stream;
192 cookie = desc->tx_submit(desc);
193 if (cookie < 0) {
194 dev_err(dev, "Failed to submit dma descriptor\n");
195 return cookie;
196 }
197
198 siu_stream->tx_desc = desc;
199 siu_stream->cookie = cookie;
200
201 dma_async_issue_pending(siu_stream->chan);
202
203 /* only input FIFO enable */
204 stfifo = siu_read32(base + SIU_STFIFO);
205 siu_write32(base + SIU_STFIFO, siu_read32(base + SIU_STFIFO) |
206 (port_info->stfifo & 0x13071307));
207 dev_dbg(dev, "%s: STFIFO %x -> %x\n", __func__,
208 stfifo, stfifo | (port_info->stfifo & 0x13071307));
209
210 return 0;
211}
212
213static void siu_io_tasklet(unsigned long data)
214{
215 struct siu_stream *siu_stream = (struct siu_stream *)data;
216 struct snd_pcm_substream *substream = siu_stream->substream;
217 struct device *dev = substream->pcm->card->dev;
218 struct snd_pcm_runtime *rt = substream->runtime;
219 struct siu_port *port_info = siu_port_info(substream);
220
221 dev_dbg(dev, "%s: flags %x\n", __func__, siu_stream->rw_flg);
222
223 if (!siu_stream->rw_flg) {
224 dev_dbg(dev, "%s: stream inactive\n", __func__);
225 return;
226 }
227
228 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
229 dma_addr_t buff;
230 size_t count;
231 u8 *virt;
232
233 buff = (dma_addr_t)PERIOD_OFFSET(rt->dma_addr,
234 siu_stream->cur_period,
235 siu_stream->period_bytes);
236 virt = PERIOD_OFFSET(rt->dma_area,
237 siu_stream->cur_period,
238 siu_stream->period_bytes);
239 count = siu_stream->period_bytes;
240
241 /* DMA transfer start */
242 siu_pcm_rd_set(port_info, buff, count);
243 } else {
244 siu_pcm_wr_set(port_info,
245 (dma_addr_t)PERIOD_OFFSET(rt->dma_addr,
246 siu_stream->cur_period,
247 siu_stream->period_bytes),
248 siu_stream->period_bytes);
249 }
250}
251
252/* Capture */
253static int siu_pcm_stmread_start(struct siu_port *port_info)
254{
255 struct siu_stream *siu_stream = &port_info->capture;
256
257 if (siu_stream->xfer_cnt > 0x1000000)
258 return -EINVAL;
259 if (siu_stream->rw_flg)
260 return -EPERM;
261
262 /* Current period in buffer */
263 siu_stream->cur_period = 0;
264
265 /* during stmread flag set */
266 siu_stream->rw_flg = RWF_STM_RD;
267
268 tasklet_schedule(&siu_stream->tasklet);
269
270 return 0;
271}
272
273static int siu_pcm_stmread_stop(struct siu_port *port_info)
274{
275 struct siu_info *info = siu_i2s_dai.private_data;
276 u32 __iomem *base = info->reg;
277 struct siu_stream *siu_stream = &port_info->capture;
278 struct device *dev = siu_stream->substream->pcm->card->dev;
279 u32 stfifo;
280
281 if (!siu_stream->rw_flg)
282 return -EPERM;
283
284 /* input FIFO disable */
285 stfifo = siu_read32(base + SIU_STFIFO);
286 siu_write32(base + SIU_STFIFO, stfifo & ~0x13071307);
287 dev_dbg(dev, "%s: STFIFO %x -> %x\n", __func__,
288 stfifo, stfifo & ~0x13071307);
289
290 /* during stmread flag clear */
291 siu_stream->rw_flg = 0;
292
293 return 0;
294}
295
296static int siu_pcm_hw_params(struct snd_pcm_substream *ss,
297 struct snd_pcm_hw_params *hw_params)
298{
299 struct siu_info *info = siu_i2s_dai.private_data;
300 struct device *dev = ss->pcm->card->dev;
301 int ret;
302
303 dev_dbg(dev, "%s: port=%d\n", __func__, info->port_id);
304
305 ret = snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw_params));
306 if (ret < 0)
307 dev_err(dev, "snd_pcm_lib_malloc_pages() failed\n");
308
309 return ret;
310}
311
312static int siu_pcm_hw_free(struct snd_pcm_substream *ss)
313{
314 struct siu_info *info = siu_i2s_dai.private_data;
315 struct siu_port *port_info = siu_port_info(ss);
316 struct device *dev = ss->pcm->card->dev;
317 struct siu_stream *siu_stream;
318
319 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
320 siu_stream = &port_info->playback;
321 else
322 siu_stream = &port_info->capture;
323
324 dev_dbg(dev, "%s: port=%d\n", __func__, info->port_id);
325
326 return snd_pcm_lib_free_pages(ss);
327}
328
329static bool filter(struct dma_chan *chan, void *slave)
330{
331 struct sh_dmae_slave *param = slave;
332
333 pr_debug("%s: slave ID %d\n", __func__, param->slave_id);
334
335 if (unlikely(param->dma_dev != chan->device->dev))
336 return false;
337
338 chan->private = param;
339 return true;
340}
341
342static int siu_pcm_open(struct snd_pcm_substream *ss)
343{
344 /* Playback / Capture */
345 struct siu_info *info = siu_i2s_dai.private_data;
346 struct siu_port *port_info = siu_port_info(ss);
347 struct siu_stream *siu_stream;
348 u32 port = info->port_id;
349 struct siu_platform *pdata = siu_i2s_dai.dev->platform_data;
350 struct device *dev = ss->pcm->card->dev;
351 dma_cap_mask_t mask;
352 struct sh_dmae_slave *param;
353
354 dma_cap_zero(mask);
355 dma_cap_set(DMA_SLAVE, mask);
356
357 dev_dbg(dev, "%s, port=%d@%p\n", __func__, port, port_info);
358
359 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) {
360 siu_stream = &port_info->playback;
361 param = &siu_stream->param;
362 param->slave_id = port ? SHDMA_SLAVE_SIUB_TX :
363 SHDMA_SLAVE_SIUA_TX;
364 } else {
365 siu_stream = &port_info->capture;
366 param = &siu_stream->param;
367 param->slave_id = port ? SHDMA_SLAVE_SIUB_RX :
368 SHDMA_SLAVE_SIUA_RX;
369 }
370
371 param->dma_dev = pdata->dma_dev;
372 /* Get DMA channel */
373 siu_stream->chan = dma_request_channel(mask, filter, param);
374 if (!siu_stream->chan) {
375 dev_err(dev, "DMA channel allocation failed!\n");
376 return -EBUSY;
377 }
378
379 siu_stream->substream = ss;
380
381 return 0;
382}
383
384static int siu_pcm_close(struct snd_pcm_substream *ss)
385{
386 struct siu_info *info = siu_i2s_dai.private_data;
387 struct device *dev = ss->pcm->card->dev;
388 struct siu_port *port_info = siu_port_info(ss);
389 struct siu_stream *siu_stream;
390
391 dev_dbg(dev, "%s: port=%d\n", __func__, info->port_id);
392
393 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
394 siu_stream = &port_info->playback;
395 else
396 siu_stream = &port_info->capture;
397
398 dma_release_channel(siu_stream->chan);
399 siu_stream->chan = NULL;
400
401 siu_stream->substream = NULL;
402
403 return 0;
404}
405
406static int siu_pcm_prepare(struct snd_pcm_substream *ss)
407{
408 struct siu_info *info = siu_i2s_dai.private_data;
409 struct siu_port *port_info = siu_port_info(ss);
410 struct device *dev = ss->pcm->card->dev;
411 struct snd_pcm_runtime *rt = ss->runtime;
412 struct siu_stream *siu_stream;
413 snd_pcm_sframes_t xfer_cnt;
414
415 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
416 siu_stream = &port_info->playback;
417 else
418 siu_stream = &port_info->capture;
419
420 rt = siu_stream->substream->runtime;
421
422 siu_stream->buf_bytes = snd_pcm_lib_buffer_bytes(ss);
423 siu_stream->period_bytes = snd_pcm_lib_period_bytes(ss);
424
425 dev_dbg(dev, "%s: port=%d, %d channels, period=%u bytes\n", __func__,
426 info->port_id, rt->channels, siu_stream->period_bytes);
427
428 /* We only support buffers that are multiples of the period */
429 if (siu_stream->buf_bytes % siu_stream->period_bytes) {
430 dev_err(dev, "%s() - buffer=%d not multiple of period=%d\n",
431 __func__, siu_stream->buf_bytes,
432 siu_stream->period_bytes);
433 return -EINVAL;
434 }
435
436 xfer_cnt = bytes_to_frames(rt, siu_stream->period_bytes);
437 if (!xfer_cnt || xfer_cnt > 0x1000000)
438 return -EINVAL;
439
440 siu_stream->format = rt->format;
441 siu_stream->xfer_cnt = xfer_cnt;
442
443 dev_dbg(dev, "port=%d buf=%lx buf_bytes=%d period_bytes=%d "
444 "format=%d channels=%d xfer_cnt=%d\n", info->port_id,
445 (unsigned long)rt->dma_addr, siu_stream->buf_bytes,
446 siu_stream->period_bytes,
447 siu_stream->format, rt->channels, (int)xfer_cnt);
448
449 return 0;
450}
451
452static int siu_pcm_trigger(struct snd_pcm_substream *ss, int cmd)
453{
454 struct siu_info *info = siu_i2s_dai.private_data;
455 struct device *dev = ss->pcm->card->dev;
456 struct siu_port *port_info = siu_port_info(ss);
457 int ret;
458
459 dev_dbg(dev, "%s: port=%d@%p, cmd=%d\n", __func__,
460 info->port_id, port_info, cmd);
461
462 switch (cmd) {
463 case SNDRV_PCM_TRIGGER_START:
464 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
465 ret = siu_pcm_stmwrite_start(port_info);
466 else
467 ret = siu_pcm_stmread_start(port_info);
468
469 if (ret < 0)
470 dev_warn(dev, "%s: start failed on port=%d\n",
471 __func__, info->port_id);
472
473 break;
474 case SNDRV_PCM_TRIGGER_STOP:
475 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
476 siu_pcm_stmwrite_stop(port_info);
477 else
478 siu_pcm_stmread_stop(port_info);
479 ret = 0;
480
481 break;
482 default:
483 dev_err(dev, "%s() unsupported cmd=%d\n", __func__, cmd);
484 ret = -EINVAL;
485 }
486
487 return ret;
488}
489
490/*
491 * So far only resolution of one period is supported, subject to extending the
492 * dmangine API
493 */
494static snd_pcm_uframes_t siu_pcm_pointer_dma(struct snd_pcm_substream *ss)
495{
496 struct device *dev = ss->pcm->card->dev;
497 struct siu_info *info = siu_i2s_dai.private_data;
498 u32 __iomem *base = info->reg;
499 struct siu_port *port_info = siu_port_info(ss);
500 struct snd_pcm_runtime *rt = ss->runtime;
501 size_t ptr;
502 struct siu_stream *siu_stream;
503
504 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK)
505 siu_stream = &port_info->playback;
506 else
507 siu_stream = &port_info->capture;
508
509 /*
510 * ptr is the offset into the buffer where the dma is currently at. We
511 * check if the dma buffer has just wrapped.
512 */
513 ptr = PERIOD_OFFSET(rt->dma_addr,
514 siu_stream->cur_period,
515 siu_stream->period_bytes) - rt->dma_addr;
516
517 dev_dbg(dev,
518 "%s: port=%d, events %x, FSTS %x, xferred %u/%u, cookie %d\n",
519 __func__, info->port_id, siu_read32(base + SIU_EVNTC),
520 siu_read32(base + SIU_SBFSTS), ptr, siu_stream->buf_bytes,
521 siu_stream->cookie);
522
523 if (ptr >= siu_stream->buf_bytes)
524 ptr = 0;
525
526 return bytes_to_frames(ss->runtime, ptr);
527}
528
529static int siu_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
530 struct snd_pcm *pcm)
531{
532 /* card->dev == socdev->dev, see snd_soc_new_pcms() */
533 struct siu_info *info = siu_i2s_dai.private_data;
534 struct platform_device *pdev = to_platform_device(card->dev);
535 int ret;
536 int i;
537
538 /* pdev->id selects between SIUA and SIUB */
539 if (pdev->id < 0 || pdev->id >= SIU_PORT_NUM)
540 return -EINVAL;
541
542 info->port_id = pdev->id;
543
544 /*
545 * While the siu has 2 ports, only one port can be on at a time (only 1
546 * SPB). So far all the boards using the siu had only one of the ports
547 * wired to a codec. To simplify things, we only register one port with
548 * alsa. In case both ports are needed, it should be changed here
549 */
550 for (i = pdev->id; i < pdev->id + 1; i++) {
551 struct siu_port **port_info = &siu_ports[i];
552
553 ret = siu_init_port(i, port_info, card);
554 if (ret < 0)
555 return ret;
556
557 ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
558 SNDRV_DMA_TYPE_DEV, NULL,
559 SIU_BUFFER_BYTES_MAX, SIU_BUFFER_BYTES_MAX);
560 if (ret < 0) {
561 dev_err(card->dev,
562 "snd_pcm_lib_preallocate_pages_for_all() err=%d",
563 ret);
564 goto fail;
565 }
566
567 (*port_info)->pcm = pcm;
568
569 /* IO tasklets */
570 tasklet_init(&(*port_info)->playback.tasklet, siu_io_tasklet,
571 (unsigned long)&(*port_info)->playback);
572 tasklet_init(&(*port_info)->capture.tasklet, siu_io_tasklet,
573 (unsigned long)&(*port_info)->capture);
574 }
575
576 dev_info(card->dev, "SuperH SIU driver initialized.\n");
577 return 0;
578
579fail:
580 siu_free_port(siu_ports[pdev->id]);
581 dev_err(card->dev, "SIU: failed to initialize.\n");
582 return ret;
583}
584
585static void siu_pcm_free(struct snd_pcm *pcm)
586{
587 struct platform_device *pdev = to_platform_device(pcm->card->dev);
588 struct siu_port *port_info = siu_ports[pdev->id];
589
590 tasklet_kill(&port_info->capture.tasklet);
591 tasklet_kill(&port_info->playback.tasklet);
592
593 siu_free_port(port_info);
594 snd_pcm_lib_preallocate_free_for_all(pcm);
595
596 dev_dbg(pcm->card->dev, "%s\n", __func__);
597}
598
599static struct snd_pcm_ops siu_pcm_ops = {
600 .open = siu_pcm_open,
601 .close = siu_pcm_close,
602 .ioctl = snd_pcm_lib_ioctl,
603 .hw_params = siu_pcm_hw_params,
604 .hw_free = siu_pcm_hw_free,
605 .prepare = siu_pcm_prepare,
606 .trigger = siu_pcm_trigger,
607 .pointer = siu_pcm_pointer_dma,
608};
609
610struct snd_soc_platform siu_platform = {
611 .name = "siu-audio",
612 .pcm_ops = &siu_pcm_ops,
613 .pcm_new = siu_pcm_new,
614 .pcm_free = siu_pcm_free,
615};
616EXPORT_SYMBOL_GPL(siu_platform);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 19:03:45 -0500