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-rw-r--r--sound/soc/pxa/pxa2xx-i2s.c200
-rw-r--r--sound/soc/pxa/pxa2xx-i2s.h20
2 files changed, 102 insertions, 118 deletions
diff --git a/sound/soc/pxa/pxa2xx-i2s.c b/sound/soc/pxa/pxa2xx-i2s.c
index 98b167fe68e5..575a6137c040 100644
--- a/sound/soc/pxa/pxa2xx-i2s.c
+++ b/sound/soc/pxa/pxa2xx-i2s.c
@@ -29,11 +29,7 @@
#include <asm/arch/audio.h>
#include "pxa2xx-pcm.h"
-
-/* used to disable sysclk if external crystal is used */
-static int extclk;
-module_param(extclk, int, 0);
-MODULE_PARM_DESC(extclk, "set to 1 to disable pxa2xx i2s sysclk");
+#include "pxa2xx-i2s.h"
struct pxa_i2s_port {
u32 sadiv;
@@ -41,97 +37,10 @@ struct pxa_i2s_port {
u32 sacr1;
u32 saimr;
int master;
+ u32 fmt;
};
static struct pxa_i2s_port pxa_i2s;
-#define PXA_I2S_DAIFMT \
- (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF)
-
-#define PXA_I2S_DIR \
- (SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE)
-
-#define PXA_I2S_RATES \
- (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
- SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
- SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
-
-/* priv is divider */
-static struct snd_soc_dai_mode pxa2xx_i2s_modes[] = {
- /* pxa2xx I2S frame and clock master modes */
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = SNDRV_PCM_RATE_8000,
- .pcmdir = PXA_I2S_DIR,
- .flags = SND_SOC_DAI_BFS_DIV,
- .fs = 256,
- .bfs = SND_SOC_FSBD(4),
- .priv = 0x48,
- },
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = SNDRV_PCM_RATE_11025,
- .pcmdir = PXA_I2S_DIR,
- .flags = SND_SOC_DAI_BFS_DIV,
- .fs = 256,
- .bfs = SND_SOC_FSBD(4),
- .priv = 0x34,
- },
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = SNDRV_PCM_RATE_16000,
- .pcmdir = PXA_I2S_DIR,
- .flags = SND_SOC_DAI_BFS_DIV,
- .fs = 256,
- .bfs = SND_SOC_FSBD(4),
- .priv = 0x24,
- },
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = SNDRV_PCM_RATE_22050,
- .pcmdir = PXA_I2S_DIR,
- .flags = SND_SOC_DAI_BFS_DIV,
- .fs = 256,
- .bfs = SND_SOC_FSBD(4),
- .priv = 0x1a,
- },
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = SNDRV_PCM_RATE_44100,
- .pcmdir = PXA_I2S_DIR,
- .flags = SND_SOC_DAI_BFS_DIV,
- .fs = 256,
- .bfs = SND_SOC_FSBD(4),
- .priv = 0xd,
- },
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = SNDRV_PCM_RATE_48000,
- .pcmdir = PXA_I2S_DIR,
- .flags = SND_SOC_DAI_BFS_DIV,
- .fs = 256,
- .bfs = SND_SOC_FSBD(4),
- .priv = 0xc,
- },
-
- /* pxa2xx I2S frame master and clock slave mode */
- {
- .fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBM_CFS,
- .pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
- .pcmrate = PXA_I2S_RATES,
- .pcmdir = PXA_I2S_DIR,
- .fs = SND_SOC_FS_ALL,
- .flags = SND_SOC_DAI_BFS_RATE,
- .bfs = 64,
- .priv = 0x48,
- },
-};
-
static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = {
.name = "I2S PCM Stereo out",
.dev_addr = __PREG(SADR),
@@ -171,8 +80,9 @@ static struct pxa2xx_gpio gpio_bus[] = {
static int pxa2xx_i2s_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
- if (!rtd->cpu_dai->active) {
+ if (!cpu_dai->active) {
SACR0 |= SACR0_RST;
SACR0 = 0;
}
@@ -191,18 +101,50 @@ static int pxa_i2s_wait(void)
return 0;
}
-static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+static int pxa2xx_i2s_set_dai_fmt(struct snd_soc_cpu_dai *cpu_dai,
+ unsigned int fmt)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ pxa_i2s.fmt = 0;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ pxa_i2s.fmt = SACR1_AMSL;
+ break;
+ }
- pxa_i2s.master = 0;
- if (rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CBS_CFS)
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
pxa_i2s.master = 1;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFS:
+ pxa_i2s.master = 0;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
- if (pxa_i2s.master && !extclk)
+static int pxa2xx_i2s_set_dai_sysclk(struct snd_soc_cpu_dai *cpu_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ if (clk_id != PXA2XX_I2S_SYSCLK)
+ return -ENODEV;
+
+ if (pxa_i2s.master && dir == SND_SOC_CLOCK_OUT)
pxa_gpio_mode(gpio_bus[pxa_i2s.master].sys);
+ return 0;
+}
+
+static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
+
pxa_gpio_mode(gpio_bus[pxa_i2s.master].rx);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].tx);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].frm);
@@ -211,9 +153,9 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
pxa_i2s_wait();
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- rtd->cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_out;
+ cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_out;
else
- rtd->cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_in;
+ cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_in;
/* is port used by another stream */
if (!(SACR0 & SACR0_ENB)) {
@@ -224,16 +166,37 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
SACR0 |= SACR0_BCKD;
SACR0 |= SACR0_RFTH(14) | SACR0_TFTH(1);
-
- if (rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_LEFT_J)
- SACR1 |= SACR1_AMSL;
+ SACR1 |= pxa_i2s.fmt;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
SAIMR |= SAIMR_TFS;
else
SAIMR |= SAIMR_RFS;
- SADIV = rtd->cpu_dai->dai_runtime.priv;
+ switch (params_rate(params)) {
+ case 8000:
+ SADIV = 0x48;
+ break;
+ case 11025:
+ SADIV = 0x34;
+ break;
+ case 16000:
+ SADIV = 0x24;
+ break;
+ case 22050:
+ SADIV = 0x1a;
+ break;
+ case 44100:
+ SADIV = 0xd;
+ break;
+ case 48000:
+ SADIV = 0xc;
+ break;
+ case 96000: /* not in manual and possibly slightly inaccurate */
+ SADIV = 0x6;
+ break;
+ }
+
return 0;
}
@@ -316,12 +279,9 @@ static int pxa2xx_i2s_resume(struct platform_device *pdev,
#define pxa2xx_i2s_resume NULL
#endif
-/* pxa2xx I2S sysclock is always 256 FS */
-static unsigned int pxa_i2s_config_sysclk(struct snd_soc_cpu_dai *iface,
- struct snd_soc_clock_info *info, unsigned int clk)
-{
- return info->rate << 8;
-}
+#define PXA2XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
struct snd_soc_cpu_dai pxa_i2s_dai = {
.name = "pxa2xx-i2s",
@@ -329,21 +289,25 @@ struct snd_soc_cpu_dai pxa_i2s_dai = {
.type = SND_SOC_DAI_I2S,
.suspend = pxa2xx_i2s_suspend,
.resume = pxa2xx_i2s_resume,
- .config_sysclk = pxa_i2s_config_sysclk,
.playback = {
.channels_min = 2,
- .channels_max = 2,},
+ .channels_max = 2,
+ .rates = PXA2XX_I2S_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,},
.capture = {
.channels_min = 2,
- .channels_max = 2,},
+ .channels_max = 2,
+ .rates = PXA2XX_I2S_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,},
.ops = {
.startup = pxa2xx_i2s_startup,
.shutdown = pxa2xx_i2s_shutdown,
.trigger = pxa2xx_i2s_trigger,
.hw_params = pxa2xx_i2s_hw_params,},
- .caps = {
- .num_modes = ARRAY_SIZE(pxa2xx_i2s_modes),
- .mode = pxa2xx_i2s_modes,},
+ .dai_ops = {
+ .set_fmt = pxa2xx_i2s_set_dai_fmt,
+ .set_sysclk = pxa2xx_i2s_set_dai_sysclk,
+ },
};
EXPORT_SYMBOL_GPL(pxa_i2s_dai);
diff --git a/sound/soc/pxa/pxa2xx-i2s.h b/sound/soc/pxa/pxa2xx-i2s.h
new file mode 100644
index 000000000000..a2484f0881f1
--- /dev/null
+++ b/sound/soc/pxa/pxa2xx-i2s.h
@@ -0,0 +1,20 @@
+/*
+ * linux/sound/arm/pxa2xx-i2s.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _PXA2XX_I2S_H
+#define _PXA2XX_I2S_H
+
+/* pxa2xx DAI ID's */
+#define PXA2XX_DAI_I2S 0
+
+/* I2S clock */
+#define PXA2XX_I2S_SYSCLK 0
+
+extern struct snd_soc_cpu_dai pxa_i2s_dai;
+
+#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.