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-rw-r--r--sound/soc/kirkwood/Kconfig18
-rw-r--r--sound/soc/kirkwood/Makefile8
-rw-r--r--sound/soc/kirkwood/armada-370-db.c156
-rw-r--r--sound/soc/kirkwood/kirkwood-dma.c262
-rw-r--r--sound/soc/kirkwood/kirkwood-i2s.c775
-rw-r--r--sound/soc/kirkwood/kirkwood.h148
6 files changed, 1367 insertions, 0 deletions
diff --git a/sound/soc/kirkwood/Kconfig b/sound/soc/kirkwood/Kconfig
new file mode 100644
index 0000000000..5d8a86b26f
--- /dev/null
+++ b/sound/soc/kirkwood/Kconfig
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config SND_KIRKWOOD_SOC
+ tristate "SoC Audio for the Marvell Kirkwood and Dove chips"
+ depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
+ help
+ Say Y or M if you want to add support for codecs attached to
+ the Kirkwood I2S interface. You will also need to select the
+ audio interfaces to support below.
+
+config SND_KIRKWOOD_SOC_ARMADA370_DB
+ tristate "SoC Audio support for Armada 370 DB"
+ depends on SND_KIRKWOOD_SOC && (ARCH_MVEBU || COMPILE_TEST) && I2C
+ select SND_SOC_CS42L51
+ select SND_SOC_SPDIF
+ help
+ Say Y if you want to add support for SoC audio on
+ the Armada 370 Development Board.
+
diff --git a/sound/soc/kirkwood/Makefile b/sound/soc/kirkwood/Makefile
new file mode 100644
index 0000000000..e2d279f16a
--- /dev/null
+++ b/sound/soc/kirkwood/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
+snd-soc-kirkwood-objs := kirkwood-dma.o kirkwood-i2s.o
+
+obj-$(CONFIG_SND_KIRKWOOD_SOC) += snd-soc-kirkwood.o
+
+snd-soc-armada-370-db-objs := armada-370-db.o
+
+obj-$(CONFIG_SND_KIRKWOOD_SOC_ARMADA370_DB) += snd-soc-armada-370-db.o
diff --git a/sound/soc/kirkwood/armada-370-db.c b/sound/soc/kirkwood/armada-370-db.c
new file mode 100644
index 0000000000..81326426da
--- /dev/null
+++ b/sound/soc/kirkwood/armada-370-db.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2014 Marvell
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <linux/of.h>
+#include <linux/platform_data/asoc-kirkwood.h>
+#include "../codecs/cs42l51.h"
+
+static int a370db_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+ unsigned int freq;
+
+ switch (params_rate(params)) {
+ default:
+ case 44100:
+ freq = 11289600;
+ break;
+ case 48000:
+ freq = 12288000;
+ break;
+ case 96000:
+ freq = 24576000;
+ break;
+ }
+
+ return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
+}
+
+static const struct snd_soc_ops a370db_ops = {
+ .hw_params = a370db_hw_params,
+};
+
+static const struct snd_soc_dapm_widget a370db_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Out Jack", NULL),
+ SND_SOC_DAPM_LINE("In Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route a370db_route[] = {
+ { "Out Jack", NULL, "HPL" },
+ { "Out Jack", NULL, "HPR" },
+ { "AIN1L", NULL, "In Jack" },
+ { "AIN1L", NULL, "In Jack" },
+};
+
+SND_SOC_DAILINK_DEFS(analog,
+ DAILINK_COMP_ARRAY(COMP_CPU("i2s")),
+ DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42l51-hifi")),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(spdif_out,
+ DAILINK_COMP_ARRAY(COMP_CPU("spdif")),
+ DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dit-hifi")),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(spdif_in,
+ DAILINK_COMP_ARRAY(COMP_CPU("spdif")),
+ DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dir-hifi")),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link a370db_dai[] = {
+{
+ .name = "CS42L51",
+ .stream_name = "analog",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &a370db_ops,
+ SND_SOC_DAILINK_REG(analog),
+},
+{
+ .name = "S/PDIF out",
+ .stream_name = "spdif-out",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
+ SND_SOC_DAILINK_REG(spdif_out),
+},
+{
+ .name = "S/PDIF in",
+ .stream_name = "spdif-in",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
+ SND_SOC_DAILINK_REG(spdif_in),
+},
+};
+
+static struct snd_soc_card a370db = {
+ .name = "a370db",
+ .owner = THIS_MODULE,
+ .dai_link = a370db_dai,
+ .num_links = ARRAY_SIZE(a370db_dai),
+ .dapm_widgets = a370db_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets),
+ .dapm_routes = a370db_route,
+ .num_dapm_routes = ARRAY_SIZE(a370db_route),
+};
+
+static int a370db_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &a370db;
+
+ card->dev = &pdev->dev;
+
+ a370db_dai[0].cpus->of_node =
+ of_parse_phandle(pdev->dev.of_node,
+ "marvell,audio-controller", 0);
+ a370db_dai[0].platforms->of_node = a370db_dai[0].cpus->of_node;
+
+ a370db_dai[0].codecs->of_node =
+ of_parse_phandle(pdev->dev.of_node,
+ "marvell,audio-codec", 0);
+
+ a370db_dai[1].cpus->of_node = a370db_dai[0].cpus->of_node;
+ a370db_dai[1].platforms->of_node = a370db_dai[0].cpus->of_node;
+
+ a370db_dai[1].codecs->of_node =
+ of_parse_phandle(pdev->dev.of_node,
+ "marvell,audio-codec", 1);
+
+ a370db_dai[2].cpus->of_node = a370db_dai[0].cpus->of_node;
+ a370db_dai[2].platforms->of_node = a370db_dai[0].cpus->of_node;
+
+ a370db_dai[2].codecs->of_node =
+ of_parse_phandle(pdev->dev.of_node,
+ "marvell,audio-codec", 2);
+
+ return devm_snd_soc_register_card(card->dev, card);
+}
+
+static const struct of_device_id a370db_dt_ids[] __maybe_unused = {
+ { .compatible = "marvell,a370db-audio" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, a370db_dt_ids);
+
+static struct platform_driver a370db_driver = {
+ .driver = {
+ .name = "a370db-audio",
+ .of_match_table = of_match_ptr(a370db_dt_ids),
+ },
+ .probe = a370db_probe,
+};
+
+module_platform_driver(a370db_driver);
+
+MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>");
+MODULE_DESCRIPTION("ALSA SoC a370db audio client");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:a370db-audio");
diff --git a/sound/soc/kirkwood/kirkwood-dma.c b/sound/soc/kirkwood/kirkwood-dma.c
new file mode 100644
index 0000000000..640cebd298
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-dma.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * kirkwood-dma.c
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/mbus.h>
+#include <sound/soc.h>
+#include "kirkwood.h"
+
+static struct kirkwood_dma_data *kirkwood_priv(struct snd_pcm_substream *subs)
+{
+ struct snd_soc_pcm_runtime *soc_runtime = subs->private_data;
+ return snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(soc_runtime, 0));
+}
+
+static const struct snd_pcm_hardware kirkwood_dma_snd_hw = {
+ .info = SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
+ .buffer_bytes_max = KIRKWOOD_SND_MAX_BUFFER_BYTES,
+ .period_bytes_min = KIRKWOOD_SND_MIN_PERIOD_BYTES,
+ .period_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES,
+ .periods_min = KIRKWOOD_SND_MIN_PERIODS,
+ .periods_max = KIRKWOOD_SND_MAX_PERIODS,
+ .fifo_size = 0,
+};
+
+static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id)
+{
+ struct kirkwood_dma_data *priv = dev_id;
+ unsigned long mask, status, cause;
+
+ mask = readl(priv->io + KIRKWOOD_INT_MASK);
+ status = readl(priv->io + KIRKWOOD_INT_CAUSE) & mask;
+
+ cause = readl(priv->io + KIRKWOOD_ERR_CAUSE);
+ if (unlikely(cause)) {
+ printk(KERN_WARNING "%s: got err interrupt 0x%lx\n",
+ __func__, cause);
+ writel(cause, priv->io + KIRKWOOD_ERR_CAUSE);
+ }
+
+ /* we've enabled only bytes interrupts ... */
+ if (status & ~(KIRKWOOD_INT_CAUSE_PLAY_BYTES | \
+ KIRKWOOD_INT_CAUSE_REC_BYTES)) {
+ printk(KERN_WARNING "%s: unexpected interrupt %lx\n",
+ __func__, status);
+ return IRQ_NONE;
+ }
+
+ /* ack int */
+ writel(status, priv->io + KIRKWOOD_INT_CAUSE);
+
+ if (status & KIRKWOOD_INT_CAUSE_PLAY_BYTES)
+ snd_pcm_period_elapsed(priv->substream_play);
+
+ if (status & KIRKWOOD_INT_CAUSE_REC_BYTES)
+ snd_pcm_period_elapsed(priv->substream_rec);
+
+ return IRQ_HANDLED;
+}
+
+static void
+kirkwood_dma_conf_mbus_windows(void __iomem *base, int win,
+ unsigned long dma,
+ const struct mbus_dram_target_info *dram)
+{
+ int i;
+
+ /* First disable and clear windows */
+ writel(0, base + KIRKWOOD_AUDIO_WIN_CTRL_REG(win));
+ writel(0, base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));
+
+ /* try to find matching cs for current dma address */
+ for (i = 0; i < dram->num_cs; i++) {
+ const struct mbus_dram_window *cs = &dram->cs[i];
+ if ((cs->base & 0xffff0000) < (dma & 0xffff0000)) {
+ writel(cs->base & 0xffff0000,
+ base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));
+ writel(((cs->size - 1) & 0xffff0000) |
+ (cs->mbus_attr << 8) |
+ (dram->mbus_dram_target_id << 4) | 1,
+ base + KIRKWOOD_AUDIO_WIN_CTRL_REG(win));
+ }
+ }
+}
+
+static int kirkwood_dma_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ int err;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
+
+ snd_soc_set_runtime_hwparams(substream, &kirkwood_dma_snd_hw);
+
+ /* Ensure that all constraints linked to dma burst are fulfilled */
+ err = snd_pcm_hw_constraint_minmax(runtime,
+ SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
+ priv->burst * 2,
+ KIRKWOOD_AUDIO_BUF_MAX-1);
+ if (err < 0)
+ return err;
+
+ err = snd_pcm_hw_constraint_step(runtime, 0,
+ SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
+ priv->burst);
+ if (err < 0)
+ return err;
+
+ err = snd_pcm_hw_constraint_step(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+ priv->burst);
+ if (err < 0)
+ return err;
+
+ if (!priv->substream_play && !priv->substream_rec) {
+ err = request_irq(priv->irq, kirkwood_dma_irq, IRQF_SHARED,
+ "kirkwood-i2s", priv);
+ if (err)
+ return err;
+
+ /*
+ * Enable Error interrupts. We're only ack'ing them but
+ * it's useful for diagnostics
+ */
+ writel((unsigned int)-1, priv->io + KIRKWOOD_ERR_MASK);
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ if (priv->substream_play)
+ return -EBUSY;
+ priv->substream_play = substream;
+ } else {
+ if (priv->substream_rec)
+ return -EBUSY;
+ priv->substream_rec = substream;
+ }
+
+ return 0;
+}
+
+static int kirkwood_dma_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
+
+ if (!priv)
+ return 0;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ priv->substream_play = NULL;
+ else
+ priv->substream_rec = NULL;
+
+ if (!priv->substream_play && !priv->substream_rec) {
+ writel(0, priv->io + KIRKWOOD_ERR_MASK);
+ free_irq(priv->irq, priv);
+ }
+
+ return 0;
+}
+
+static int kirkwood_dma_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
+ const struct mbus_dram_target_info *dram = mv_mbus_dram_info();
+ unsigned long addr = substream->runtime->dma_addr;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ kirkwood_dma_conf_mbus_windows(priv->io,
+ KIRKWOOD_PLAYBACK_WIN, addr, dram);
+ else
+ kirkwood_dma_conf_mbus_windows(priv->io,
+ KIRKWOOD_RECORD_WIN, addr, dram);
+ return 0;
+}
+
+static int kirkwood_dma_prepare(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
+ unsigned long size, count;
+
+ /* compute buffer size in term of "words" as requested in specs */
+ size = frames_to_bytes(runtime, runtime->buffer_size);
+ size = (size>>2)-1;
+ count = snd_pcm_lib_period_bytes(substream);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ writel(count, priv->io + KIRKWOOD_PLAY_BYTE_INT_COUNT);
+ writel(runtime->dma_addr, priv->io + KIRKWOOD_PLAY_BUF_ADDR);
+ writel(size, priv->io + KIRKWOOD_PLAY_BUF_SIZE);
+ } else {
+ writel(count, priv->io + KIRKWOOD_REC_BYTE_INT_COUNT);
+ writel(runtime->dma_addr, priv->io + KIRKWOOD_REC_BUF_ADDR);
+ writel(size, priv->io + KIRKWOOD_REC_BUF_SIZE);
+ }
+
+
+ return 0;
+}
+
+static snd_pcm_uframes_t kirkwood_dma_pointer(
+ struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct kirkwood_dma_data *priv = kirkwood_priv(substream);
+ snd_pcm_uframes_t count;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ count = bytes_to_frames(substream->runtime,
+ readl(priv->io + KIRKWOOD_PLAY_BYTE_COUNT));
+ else
+ count = bytes_to_frames(substream->runtime,
+ readl(priv->io + KIRKWOOD_REC_BYTE_COUNT));
+
+ return count;
+}
+
+static int kirkwood_dma_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ size_t size = kirkwood_dma_snd_hw.buffer_bytes_max;
+ struct snd_card *card = rtd->card->snd_card;
+ int ret;
+
+ ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+
+ snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
+ card->dev, size, size);
+
+ return 0;
+}
+
+const struct snd_soc_component_driver kirkwood_soc_component = {
+ .name = DRV_NAME,
+ .open = kirkwood_dma_open,
+ .close = kirkwood_dma_close,
+ .hw_params = kirkwood_dma_hw_params,
+ .prepare = kirkwood_dma_prepare,
+ .pointer = kirkwood_dma_pointer,
+ .pcm_construct = kirkwood_dma_new,
+};
diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
new file mode 100644
index 0000000000..d1eb90310a
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -0,0 +1,775 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * kirkwood-i2s.c
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/mbus.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <linux/platform_data/asoc-kirkwood.h>
+#include <linux/of.h>
+
+#include "kirkwood.h"
+
+#define KIRKWOOD_I2S_FORMATS \
+ (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+#define KIRKWOOD_SPDIF_FORMATS \
+ (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+/* These registers are relative to the second register region -
+ * audio pll configuration.
+ */
+#define A38X_PLL_CONF_REG0 0x0
+#define A38X_PLL_FB_CLK_DIV_OFFSET 10
+#define A38X_PLL_FB_CLK_DIV_MASK 0x7fc00
+#define A38X_PLL_CONF_REG1 0x4
+#define A38X_PLL_FREQ_OFFSET_MASK 0xffff
+#define A38X_PLL_FREQ_OFFSET_VALID BIT(16)
+#define A38X_PLL_SW_RESET BIT(31)
+#define A38X_PLL_CONF_REG2 0x8
+#define A38X_PLL_AUDIO_POSTDIV_MASK 0x7f
+
+/* Bit below belongs to SoC control register corresponding to the third
+ * register region.
+ */
+#define A38X_SPDIF_MODE_ENABLE BIT(27)
+
+static int armada_38x_i2s_init_quirk(struct platform_device *pdev,
+ struct kirkwood_dma_data *priv,
+ struct snd_soc_dai_driver *dai_drv)
+{
+ struct device_node *np = pdev->dev.of_node;
+ u32 reg_val;
+ int i;
+
+ priv->pll_config = devm_platform_ioremap_resource_byname(pdev, "pll_regs");
+ if (IS_ERR(priv->pll_config))
+ return -ENOMEM;
+
+ priv->soc_control = devm_platform_ioremap_resource_byname(pdev, "soc_ctrl");
+ if (IS_ERR(priv->soc_control))
+ return -ENOMEM;
+
+ /* Select one of exceptive modes: I2S or S/PDIF */
+ reg_val = readl(priv->soc_control);
+ if (of_property_read_bool(np, "spdif-mode")) {
+ reg_val |= A38X_SPDIF_MODE_ENABLE;
+ dev_info(&pdev->dev, "using S/PDIF mode\n");
+ } else {
+ reg_val &= ~A38X_SPDIF_MODE_ENABLE;
+ dev_info(&pdev->dev, "using I2S mode\n");
+ }
+ writel(reg_val, priv->soc_control);
+
+ /* Update available rates of mclk's fs */
+ for (i = 0; i < 2; i++) {
+ dai_drv[i].playback.rates |= SNDRV_PCM_RATE_192000;
+ dai_drv[i].capture.rates |= SNDRV_PCM_RATE_192000;
+ }
+
+ return 0;
+}
+
+static inline void armada_38x_set_pll(void __iomem *base, unsigned long rate)
+{
+ u32 reg_val;
+ u16 freq_offset = 0x22b0;
+ u8 audio_postdiv, fb_clk_div = 0x1d;
+
+ /* Set frequency offset value to not valid and enable PLL reset */
+ reg_val = readl(base + A38X_PLL_CONF_REG1);
+ reg_val &= ~A38X_PLL_FREQ_OFFSET_VALID;
+ reg_val &= ~A38X_PLL_SW_RESET;
+ writel(reg_val, base + A38X_PLL_CONF_REG1);
+
+ udelay(1);
+
+ /* Update PLL parameters */
+ switch (rate) {
+ default:
+ case 44100:
+ freq_offset = 0x735;
+ fb_clk_div = 0x1b;
+ audio_postdiv = 0xc;
+ break;
+ case 48000:
+ audio_postdiv = 0xc;
+ break;
+ case 96000:
+ audio_postdiv = 0x6;
+ break;
+ case 192000:
+ audio_postdiv = 0x3;
+ break;
+ }
+
+ reg_val = readl(base + A38X_PLL_CONF_REG0);
+ reg_val &= ~A38X_PLL_FB_CLK_DIV_MASK;
+ reg_val |= (fb_clk_div << A38X_PLL_FB_CLK_DIV_OFFSET);
+ writel(reg_val, base + A38X_PLL_CONF_REG0);
+
+ reg_val = readl(base + A38X_PLL_CONF_REG2);
+ reg_val &= ~A38X_PLL_AUDIO_POSTDIV_MASK;
+ reg_val |= audio_postdiv;
+ writel(reg_val, base + A38X_PLL_CONF_REG2);
+
+ reg_val = readl(base + A38X_PLL_CONF_REG1);
+ reg_val &= ~A38X_PLL_FREQ_OFFSET_MASK;
+ reg_val |= freq_offset;
+ writel(reg_val, base + A38X_PLL_CONF_REG1);
+
+ udelay(1);
+
+ /* Disable reset */
+ reg_val |= A38X_PLL_SW_RESET;
+ writel(reg_val, base + A38X_PLL_CONF_REG1);
+
+ /* Wait 50us for PLL to lock */
+ udelay(50);
+
+ /* Restore frequency offset value validity */
+ reg_val |= A38X_PLL_FREQ_OFFSET_VALID;
+ writel(reg_val, base + A38X_PLL_CONF_REG1);
+}
+
+static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
+ unsigned int fmt)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long mask;
+ unsigned long value;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_RIGHT_J:
+ mask = KIRKWOOD_I2S_CTL_RJ;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ mask = KIRKWOOD_I2S_CTL_LJ;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ mask = KIRKWOOD_I2S_CTL_I2S;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * Set same format for playback and record
+ * This avoids some troubles.
+ */
+ value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL);
+ value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
+ value |= mask;
+ writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL);
+
+ value = readl(priv->io+KIRKWOOD_I2S_RECCTL);
+ value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
+ value |= mask;
+ writel(value, priv->io+KIRKWOOD_I2S_RECCTL);
+
+ return 0;
+}
+
+static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
+{
+ unsigned long value;
+
+ value = KIRKWOOD_DCO_CTL_OFFSET_0;
+ switch (rate) {
+ default:
+ case 44100:
+ value |= KIRKWOOD_DCO_CTL_FREQ_11;
+ break;
+ case 48000:
+ value |= KIRKWOOD_DCO_CTL_FREQ_12;
+ break;
+ case 96000:
+ value |= KIRKWOOD_DCO_CTL_FREQ_24;
+ break;
+ }
+ writel(value, io + KIRKWOOD_DCO_CTL);
+
+ /* wait for dco locked */
+ do {
+ cpu_relax();
+ value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
+ value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK;
+ } while (value == 0);
+}
+
+static void kirkwood_set_rate(struct snd_soc_dai *dai,
+ struct kirkwood_dma_data *priv, unsigned long rate)
+{
+ uint32_t clks_ctrl;
+
+ if (IS_ERR(priv->extclk)) {
+ /* use internal dco for the supported rates
+ * defined in kirkwood_i2s_dai */
+ dev_dbg(dai->dev, "%s: dco set rate = %lu\n",
+ __func__, rate);
+ if (priv->pll_config)
+ armada_38x_set_pll(priv->pll_config, rate);
+ else
+ kirkwood_set_dco(priv->io, rate);
+
+ clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO;
+ } else {
+ /* use the external clock for the other rates
+ * defined in kirkwood_i2s_dai_extclk */
+ dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n",
+ __func__, rate, 256 * rate);
+ clk_set_rate(priv->extclk, 256 * rate);
+
+ clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK;
+ }
+ writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL);
+}
+
+static int kirkwood_i2s_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_set_dma_data(dai, substream, priv);
+ return 0;
+}
+
+static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+ uint32_t ctl_play, ctl_rec;
+ unsigned int i2s_reg;
+ unsigned long i2s_value;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ i2s_reg = KIRKWOOD_I2S_PLAYCTL;
+ } else {
+ i2s_reg = KIRKWOOD_I2S_RECCTL;
+ }
+
+ kirkwood_set_rate(dai, priv, params_rate(params));
+
+ i2s_value = readl(priv->io+i2s_reg);
+ i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
+
+ /*
+ * Size settings in play/rec i2s control regs and play/rec control
+ * regs must be the same.
+ */
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C |
+ KIRKWOOD_PLAYCTL_I2S_EN |
+ KIRKWOOD_PLAYCTL_SPDIF_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C |
+ KIRKWOOD_RECCTL_I2S_EN |
+ KIRKWOOD_RECCTL_SPDIF_EN;
+ break;
+ /*
+ * doesn't work... S20_3LE != kirkwood 20bit format ?
+ *
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 |
+ KIRKWOOD_PLAYCTL_I2S_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_20 |
+ KIRKWOOD_RECCTL_I2S_EN;
+ break;
+ */
+ case SNDRV_PCM_FORMAT_S24_LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 |
+ KIRKWOOD_PLAYCTL_I2S_EN |
+ KIRKWOOD_PLAYCTL_SPDIF_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_24 |
+ KIRKWOOD_RECCTL_I2S_EN |
+ KIRKWOOD_RECCTL_SPDIF_EN;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 |
+ KIRKWOOD_PLAYCTL_I2S_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_32 |
+ KIRKWOOD_RECCTL_I2S_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ if (params_channels(params) == 1)
+ ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH;
+ else
+ ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF;
+
+ priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK |
+ KIRKWOOD_PLAYCTL_ENABLE_MASK |
+ KIRKWOOD_PLAYCTL_SIZE_MASK);
+ priv->ctl_play |= ctl_play;
+ } else {
+ priv->ctl_rec &= ~(KIRKWOOD_RECCTL_ENABLE_MASK |
+ KIRKWOOD_RECCTL_SIZE_MASK);
+ priv->ctl_rec |= ctl_rec;
+ }
+
+ writel(i2s_value, priv->io+i2s_reg);
+
+ return 0;
+}
+
+static unsigned kirkwood_i2s_play_mute(unsigned ctl)
+{
+ if (!(ctl & KIRKWOOD_PLAYCTL_I2S_EN))
+ ctl |= KIRKWOOD_PLAYCTL_I2S_MUTE;
+ if (!(ctl & KIRKWOOD_PLAYCTL_SPDIF_EN))
+ ctl |= KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+ return ctl;
+}
+
+static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+ uint32_t ctl, value;
+
+ ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+ if ((ctl & KIRKWOOD_PLAYCTL_ENABLE_MASK) == 0) {
+ unsigned timeout = 5000;
+ /*
+ * The Armada510 spec says that if we enter pause mode, the
+ * busy bit must be read back as clear _twice_. Make sure
+ * we respect that otherwise we get DMA underruns.
+ */
+ do {
+ value = ctl;
+ ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+ if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY))
+ break;
+ udelay(1);
+ } while (timeout--);
+
+ if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)
+ dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n",
+ ctl);
+ }
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* configure */
+ ctl = priv->ctl_play;
+ if (dai->id == 0)
+ ctl &= ~KIRKWOOD_PLAYCTL_SPDIF_EN; /* i2s */
+ else
+ ctl &= ~KIRKWOOD_PLAYCTL_I2S_EN; /* spdif */
+ ctl = kirkwood_i2s_play_mute(ctl);
+ value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_PLAYCTL);
+
+ /* enable interrupts */
+ if (!runtime->no_period_wakeup) {
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+ }
+
+ /* enable playback */
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ /* stop audio, disable interrupts */
+ ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+ KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+ /* disable all playbacks */
+ ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+ KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+ KIRKWOOD_PLAYCTL_SPDIF_MUTE);
+ ctl = kirkwood_i2s_play_mute(ctl);
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+ uint32_t ctl, value;
+
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* configure */
+ ctl = priv->ctl_rec;
+ if (dai->id == 0)
+ ctl &= ~KIRKWOOD_RECCTL_SPDIF_EN; /* i2s */
+ else
+ ctl &= ~KIRKWOOD_RECCTL_I2S_EN; /* spdif */
+
+ value = ctl & ~KIRKWOOD_RECCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+
+ /* enable interrupts */
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+ /* enable record */
+ writel(ctl, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ /* stop audio, disable interrupts */
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+ /* disable all records */
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE);
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ return kirkwood_i2s_play_trigger(substream, cmd, dai);
+ else
+ return kirkwood_i2s_rec_trigger(substream, cmd, dai);
+
+ return 0;
+}
+
+static int kirkwood_i2s_init(struct kirkwood_dma_data *priv)
+{
+ unsigned long value;
+ unsigned int reg_data;
+
+ /* put system in a "safe" state : */
+ /* disable audio interrupts */
+ writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE);
+ writel(0, priv->io + KIRKWOOD_INT_MASK);
+
+ reg_data = readl(priv->io + 0x1200);
+ reg_data &= (~(0x333FF8));
+ reg_data |= 0x111D18;
+ writel(reg_data, priv->io + 0x1200);
+
+ msleep(500);
+
+ reg_data = readl(priv->io + 0x1200);
+ reg_data &= (~(0x333FF8));
+ reg_data |= 0x111D18;
+ writel(reg_data, priv->io + 0x1200);
+
+ /* disable playback/record */
+ value = readl(priv->io + KIRKWOOD_PLAYCTL);
+ value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_PLAYCTL);
+
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+
+ return 0;
+
+}
+
+static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
+ .startup = kirkwood_i2s_startup,
+ .trigger = kirkwood_i2s_trigger,
+ .hw_params = kirkwood_i2s_hw_params,
+ .set_fmt = kirkwood_i2s_set_fmt,
+};
+
+static struct snd_soc_dai_driver kirkwood_i2s_dai[2] = {
+ {
+ .name = "i2s",
+ .id = 0,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+ {
+ .name = "spdif",
+ .id = 1,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+};
+
+static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk[2] = {
+ {
+ .name = "i2s",
+ .id = 0,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+ {
+ .name = "spdif",
+ .id = 1,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+};
+
+static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
+{
+ struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data;
+ struct snd_soc_dai_driver *soc_dai = kirkwood_i2s_dai;
+ struct kirkwood_dma_data *priv;
+ struct device_node *np = pdev->dev.of_node;
+ int err;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev_set_drvdata(&pdev->dev, priv);
+
+ if (of_device_is_compatible(np, "marvell,armada-380-audio"))
+ priv->io = devm_platform_ioremap_resource_byname(pdev, "i2s_regs");
+ else
+ priv->io = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(priv->io))
+ return PTR_ERR(priv->io);
+
+ priv->irq = platform_get_irq(pdev, 0);
+ if (priv->irq < 0)
+ return priv->irq;
+
+ if (of_device_is_compatible(np, "marvell,armada-380-audio")) {
+ err = armada_38x_i2s_init_quirk(pdev, priv, soc_dai);
+ if (err < 0)
+ return err;
+ /* Set initial pll frequency */
+ armada_38x_set_pll(priv->pll_config, 44100);
+ }
+
+ if (np) {
+ priv->burst = 128; /* might be 32 or 128 */
+ } else if (data) {
+ priv->burst = data->burst;
+ } else {
+ dev_err(&pdev->dev, "no DT nor platform data ?!\n");
+ return -EINVAL;
+ }
+
+ priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL);
+ if (IS_ERR(priv->clk)) {
+ dev_err(&pdev->dev, "no clock\n");
+ return PTR_ERR(priv->clk);
+ }
+
+ priv->extclk = devm_clk_get(&pdev->dev, "extclk");
+ if (IS_ERR(priv->extclk)) {
+ if (PTR_ERR(priv->extclk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ } else {
+ if (clk_is_match(priv->extclk, priv->clk)) {
+ devm_clk_put(&pdev->dev, priv->extclk);
+ priv->extclk = ERR_PTR(-EINVAL);
+ } else {
+ dev_info(&pdev->dev, "found external clock\n");
+ clk_prepare_enable(priv->extclk);
+ soc_dai = kirkwood_i2s_dai_extclk;
+ }
+ }
+
+ err = clk_prepare_enable(priv->clk);
+ if (err < 0)
+ return err;
+
+ /* Some sensible defaults - this reflects the powerup values */
+ priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24;
+ priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;
+
+ /* Select the burst size */
+ if (priv->burst == 32) {
+ priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32;
+ priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32;
+ } else {
+ priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128;
+ priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128;
+ }
+
+ err = snd_soc_register_component(&pdev->dev, &kirkwood_soc_component,
+ soc_dai, 2);
+ if (err) {
+ dev_err(&pdev->dev, "snd_soc_register_component failed\n");
+ goto err_component;
+ }
+
+ kirkwood_i2s_init(priv);
+
+ return 0;
+
+ err_component:
+ if (!IS_ERR(priv->extclk))
+ clk_disable_unprepare(priv->extclk);
+ clk_disable_unprepare(priv->clk);
+
+ return err;
+}
+
+static void kirkwood_i2s_dev_remove(struct platform_device *pdev)
+{
+ struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev);
+
+ snd_soc_unregister_component(&pdev->dev);
+ if (!IS_ERR(priv->extclk))
+ clk_disable_unprepare(priv->extclk);
+ clk_disable_unprepare(priv->clk);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id mvebu_audio_of_match[] = {
+ { .compatible = "marvell,kirkwood-audio" },
+ { .compatible = "marvell,dove-audio" },
+ { .compatible = "marvell,armada370-audio" },
+ { .compatible = "marvell,armada-380-audio" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mvebu_audio_of_match);
+#endif
+
+static struct platform_driver kirkwood_i2s_driver = {
+ .probe = kirkwood_i2s_dev_probe,
+ .remove_new = kirkwood_i2s_dev_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_match_ptr(mvebu_audio_of_match),
+ },
+};
+
+module_platform_driver(kirkwood_i2s_driver);
+
+/* Module information */
+MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>");
+MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mvebu-audio");
diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h
new file mode 100644
index 0000000000..79bb9aa7f0
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood.h
@@ -0,0 +1,148 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * kirkwood.h
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ */
+
+#ifndef _KIRKWOOD_AUDIO_H
+#define _KIRKWOOD_AUDIO_H
+
+#define DRV_NAME "mvebu-audio"
+
+#define KIRKWOOD_RECORD_WIN 0
+#define KIRKWOOD_PLAYBACK_WIN 1
+#define KIRKWOOD_MAX_AUDIO_WIN 2
+
+#define KIRKWOOD_AUDIO_WIN_BASE_REG(win) (0xA00 + ((win)<<3))
+#define KIRKWOOD_AUDIO_WIN_CTRL_REG(win) (0xA04 + ((win)<<3))
+
+
+#define KIRKWOOD_RECCTL 0x1000
+#define KIRKWOOD_RECCTL_SPDIF_EN (1<<11)
+#define KIRKWOOD_RECCTL_I2S_EN (1<<10)
+#define KIRKWOOD_RECCTL_PAUSE (1<<9)
+#define KIRKWOOD_RECCTL_MUTE (1<<8)
+#define KIRKWOOD_RECCTL_BURST_MASK (3<<5)
+#define KIRKWOOD_RECCTL_BURST_128 (2<<5)
+#define KIRKWOOD_RECCTL_BURST_32 (1<<5)
+#define KIRKWOOD_RECCTL_MONO (1<<4)
+#define KIRKWOOD_RECCTL_MONO_CHAN_RIGHT (1<<3)
+#define KIRKWOOD_RECCTL_MONO_CHAN_LEFT (0<<3)
+#define KIRKWOOD_RECCTL_SIZE_MASK (7<<0)
+#define KIRKWOOD_RECCTL_SIZE_16 (7<<0)
+#define KIRKWOOD_RECCTL_SIZE_16_C (3<<0)
+#define KIRKWOOD_RECCTL_SIZE_20 (2<<0)
+#define KIRKWOOD_RECCTL_SIZE_24 (1<<0)
+#define KIRKWOOD_RECCTL_SIZE_32 (0<<0)
+
+#define KIRKWOOD_RECCTL_ENABLE_MASK (KIRKWOOD_RECCTL_SPDIF_EN | \
+ KIRKWOOD_RECCTL_I2S_EN)
+
+#define KIRKWOOD_REC_BUF_ADDR 0x1004
+#define KIRKWOOD_REC_BUF_SIZE 0x1008
+#define KIRKWOOD_REC_BYTE_COUNT 0x100C
+
+#define KIRKWOOD_PLAYCTL 0x1100
+#define KIRKWOOD_PLAYCTL_PLAY_BUSY (1<<16)
+#define KIRKWOOD_PLAYCTL_BURST_MASK (3<<11)
+#define KIRKWOOD_PLAYCTL_BURST_128 (2<<11)
+#define KIRKWOOD_PLAYCTL_BURST_32 (1<<11)
+#define KIRKWOOD_PLAYCTL_PAUSE (1<<9)
+#define KIRKWOOD_PLAYCTL_SPDIF_MUTE (1<<8)
+#define KIRKWOOD_PLAYCTL_MONO_MASK (3<<5)
+#define KIRKWOOD_PLAYCTL_MONO_BOTH (3<<5)
+#define KIRKWOOD_PLAYCTL_MONO_OFF (0<<5)
+#define KIRKWOOD_PLAYCTL_I2S_MUTE (1<<7)
+#define KIRKWOOD_PLAYCTL_SPDIF_EN (1<<4)
+#define KIRKWOOD_PLAYCTL_I2S_EN (1<<3)
+#define KIRKWOOD_PLAYCTL_SIZE_MASK (7<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_16 (7<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_16_C (3<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_20 (2<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_24 (1<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_32 (0<<0)
+
+#define KIRKWOOD_PLAYCTL_ENABLE_MASK (KIRKWOOD_PLAYCTL_SPDIF_EN | \
+ KIRKWOOD_PLAYCTL_I2S_EN)
+
+#define KIRKWOOD_PLAY_BUF_ADDR 0x1104
+#define KIRKWOOD_PLAY_BUF_SIZE 0x1108
+#define KIRKWOOD_PLAY_BYTE_COUNT 0x110C
+
+#define KIRKWOOD_DCO_CTL 0x1204
+#define KIRKWOOD_DCO_CTL_OFFSET_MASK (0xFFF<<2)
+#define KIRKWOOD_DCO_CTL_OFFSET_0 (0x800<<2)
+#define KIRKWOOD_DCO_CTL_FREQ_MASK (3<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_11 (0<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_12 (1<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_24 (2<<0)
+
+#define KIRKWOOD_DCO_SPCR_STATUS 0x120c
+#define KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK (1<<16)
+
+#define KIRKWOOD_CLOCKS_CTRL 0x1230
+#define KIRKWOOD_MCLK_SOURCE_MASK (3<<0)
+#define KIRKWOOD_MCLK_SOURCE_DCO (0<<0)
+#define KIRKWOOD_MCLK_SOURCE_EXTCLK (3<<0)
+
+#define KIRKWOOD_ERR_CAUSE 0x1300
+#define KIRKWOOD_ERR_MASK 0x1304
+
+#define KIRKWOOD_INT_CAUSE 0x1308
+#define KIRKWOOD_INT_MASK 0x130C
+#define KIRKWOOD_INT_CAUSE_PLAY_BYTES (1<<14)
+#define KIRKWOOD_INT_CAUSE_REC_BYTES (1<<13)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_END (1<<7)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_3Q (1<<6)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_HALF (1<<5)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_1Q (1<<4)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_END (1<<3)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_3Q (1<<2)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_HALF (1<<1)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_1Q (1<<0)
+
+#define KIRKWOOD_REC_BYTE_INT_COUNT 0x1310
+#define KIRKWOOD_PLAY_BYTE_INT_COUNT 0x1314
+#define KIRKWOOD_BYTE_INT_COUNT_MASK 0xffffff
+
+#define KIRKWOOD_I2S_PLAYCTL 0x2508
+#define KIRKWOOD_I2S_RECCTL 0x2408
+#define KIRKWOOD_I2S_CTL_JUST_MASK (0xf<<26)
+#define KIRKWOOD_I2S_CTL_LJ (0<<26)
+#define KIRKWOOD_I2S_CTL_I2S (5<<26)
+#define KIRKWOOD_I2S_CTL_RJ (8<<26)
+#define KIRKWOOD_I2S_CTL_SIZE_MASK (3<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_16 (3<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_20 (2<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_24 (1<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_32 (0<<30)
+
+#define KIRKWOOD_AUDIO_BUF_MAX (16*1024*1024)
+
+/* Theses values come from the marvell alsa driver */
+/* need to find where they come from */
+#define KIRKWOOD_SND_MIN_PERIODS 2
+#define KIRKWOOD_SND_MAX_PERIODS 16
+#define KIRKWOOD_SND_MIN_PERIOD_BYTES 256
+#define KIRKWOOD_SND_MAX_PERIOD_BYTES 0x8000
+#define KIRKWOOD_SND_MAX_BUFFER_BYTES (KIRKWOOD_SND_MAX_PERIOD_BYTES \
+ * KIRKWOOD_SND_MAX_PERIODS)
+
+struct kirkwood_dma_data {
+ void __iomem *io;
+ void __iomem *pll_config;
+ void __iomem *soc_control;
+ struct clk *clk;
+ struct clk *extclk;
+ uint32_t ctl_play;
+ uint32_t ctl_rec;
+ struct snd_pcm_substream *substream_play;
+ struct snd_pcm_substream *substream_rec;
+ int irq;
+ int burst;
+};
+
+extern const struct snd_soc_component_driver kirkwood_soc_component;
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 14:31:51 +0000