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-rw-r--r--sound/soc/cirrus/Kconfig61
-rw-r--r--sound/soc/cirrus/Makefile18
-rw-r--r--sound/soc/cirrus/edb93xx.c119
-rw-r--r--sound/soc/cirrus/ep93xx-ac97.c446
-rw-r--r--sound/soc/cirrus/ep93xx-i2s.c519
-rw-r--r--sound/soc/cirrus/ep93xx-pcm.c67
-rw-r--r--sound/soc/cirrus/ep93xx-pcm.h11
-rw-r--r--sound/soc/cirrus/simone.c86
-rw-r--r--sound/soc/cirrus/snappercl15.c134
9 files changed, 1461 insertions, 0 deletions
diff --git a/sound/soc/cirrus/Kconfig b/sound/soc/cirrus/Kconfig
new file mode 100644
index 000000000..8039a8feb
--- /dev/null
+++ b/sound/soc/cirrus/Kconfig
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config SND_EP93XX_SOC
+ tristate "SoC Audio support for the Cirrus Logic EP93xx series"
+ depends on ARCH_EP93XX || COMPILE_TEST
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for codecs attached to
+ the EP93xx I2S or AC97 interfaces.
+
+config SND_EP93XX_SOC_I2S
+ tristate
+
+if SND_EP93XX_SOC_I2S
+
+config SND_EP93XX_SOC_I2S_WATCHDOG
+ bool "IRQ based underflow watchdog workaround"
+ default y
+ help
+ I2S controller on EP93xx seems to have undocumented HW issue.
+ Underflow of internal I2S controller FIFO could confuse the
+ state machine and the whole stream can be shifted by one byte
+ until I2S is disabled. This option enables IRQ based watchdog
+ which disables and re-enables I2S in case of underflow and
+ fills FIFO with zeroes.
+
+ If you are unsure how to answer this question, answer Y.
+
+endif # if SND_EP93XX_SOC_I2S
+
+config SND_EP93XX_SOC_AC97
+ tristate
+ select AC97_BUS
+ select SND_SOC_AC97_BUS
+
+config SND_EP93XX_SOC_SNAPPERCL15
+ tristate "SoC Audio support for Bluewater Systems Snapper CL15 module"
+ depends on SND_EP93XX_SOC && MACH_SNAPPER_CL15 && I2C
+ select SND_EP93XX_SOC_I2S
+ select SND_SOC_TLV320AIC23_I2C
+ help
+ Say Y or M here if you want to add support for I2S audio on the
+ Bluewater Systems Snapper CL15 module.
+
+config SND_EP93XX_SOC_SIMONE
+ tristate "SoC Audio support for Simplemachines Sim.One board"
+ depends on SND_EP93XX_SOC && MACH_SIM_ONE
+ select SND_EP93XX_SOC_AC97
+ select SND_SOC_AC97_CODEC
+ help
+ Say Y or M here if you want to add support for AC97 audio on the
+ Simplemachines Sim.One board.
+
+config SND_EP93XX_SOC_EDB93XX
+ tristate "SoC Audio support for Cirrus Logic EDB93xx boards"
+ depends on SND_EP93XX_SOC && (MACH_EDB9301 || MACH_EDB9302 || MACH_EDB9302A || MACH_EDB9307A || MACH_EDB9315A)
+ select SND_EP93XX_SOC_I2S
+ select SND_SOC_CS4271_I2C if I2C
+ select SND_SOC_CS4271_SPI if SPI_MASTER
+ help
+ Say Y or M here if you want to add support for I2S audio on the
+ Cirrus Logic EDB93xx boards.
diff --git a/sound/soc/cirrus/Makefile b/sound/soc/cirrus/Makefile
new file mode 100644
index 000000000..bfb8dc409
--- /dev/null
+++ b/sound/soc/cirrus/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+# EP93xx Platform Support
+snd-soc-ep93xx-objs := ep93xx-pcm.o
+snd-soc-ep93xx-i2s-objs := ep93xx-i2s.o
+snd-soc-ep93xx-ac97-objs := ep93xx-ac97.o
+
+obj-$(CONFIG_SND_EP93XX_SOC) += snd-soc-ep93xx.o
+obj-$(CONFIG_SND_EP93XX_SOC_I2S) += snd-soc-ep93xx-i2s.o
+obj-$(CONFIG_SND_EP93XX_SOC_AC97) += snd-soc-ep93xx-ac97.o
+
+# EP93XX Machine Support
+snd-soc-snappercl15-objs := snappercl15.o
+snd-soc-simone-objs := simone.o
+snd-soc-edb93xx-objs := edb93xx.o
+
+obj-$(CONFIG_SND_EP93XX_SOC_SNAPPERCL15) += snd-soc-snappercl15.o
+obj-$(CONFIG_SND_EP93XX_SOC_SIMONE) += snd-soc-simone.o
+obj-$(CONFIG_SND_EP93XX_SOC_EDB93XX) += snd-soc-edb93xx.o
diff --git a/sound/soc/cirrus/edb93xx.c b/sound/soc/cirrus/edb93xx.c
new file mode 100644
index 000000000..385290202
--- /dev/null
+++ b/sound/soc/cirrus/edb93xx.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * SoC audio for EDB93xx
+ *
+ * Copyright (c) 2010 Alexander Sverdlin <subaparts@yandex.ru>
+ *
+ * This driver support CS4271 codec being master or slave, working
+ * in control port mode, connected either via SPI or I2C.
+ * The data format accepted is I2S or left-justified.
+ * DAPM support not implemented.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/soc/cirrus/ep93xx.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <asm/mach-types.h>
+
+static int edb93xx_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);
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ int err;
+ unsigned int mclk_rate;
+ unsigned int rate = params_rate(params);
+
+ /*
+ * According to CS4271 datasheet we use MCLK/LRCK=256 for
+ * rates below 50kHz and 128 for higher sample rates
+ */
+ if (rate < 50000)
+ mclk_rate = rate * 64 * 4;
+ else
+ mclk_rate = rate * 64 * 2;
+
+ err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate,
+ SND_SOC_CLOCK_IN);
+ if (err)
+ return err;
+
+ return snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate,
+ SND_SOC_CLOCK_OUT);
+}
+
+static const struct snd_soc_ops edb93xx_ops = {
+ .hw_params = edb93xx_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(hifi,
+ DAILINK_COMP_ARRAY(COMP_CPU("ep93xx-i2s")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "cs4271-hifi")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("ep93xx-i2s")));
+
+static struct snd_soc_dai_link edb93xx_dai = {
+ .name = "CS4271",
+ .stream_name = "CS4271 HiFi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBC_CFC,
+ .ops = &edb93xx_ops,
+ SND_SOC_DAILINK_REG(hifi),
+};
+
+static struct snd_soc_card snd_soc_edb93xx = {
+ .name = "EDB93XX",
+ .owner = THIS_MODULE,
+ .dai_link = &edb93xx_dai,
+ .num_links = 1,
+};
+
+static int edb93xx_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_edb93xx;
+ int ret;
+
+ ret = ep93xx_i2s_acquire();
+ if (ret)
+ return ret;
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+ ep93xx_i2s_release();
+ }
+
+ return ret;
+}
+
+static int edb93xx_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+ ep93xx_i2s_release();
+
+ return 0;
+}
+
+static struct platform_driver edb93xx_driver = {
+ .driver = {
+ .name = "edb93xx-audio",
+ },
+ .probe = edb93xx_probe,
+ .remove = edb93xx_remove,
+};
+
+module_platform_driver(edb93xx_driver);
+
+MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>");
+MODULE_DESCRIPTION("ALSA SoC EDB93xx");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:edb93xx-audio");
diff --git a/sound/soc/cirrus/ep93xx-ac97.c b/sound/soc/cirrus/ep93xx-ac97.c
new file mode 100644
index 000000000..37593abe6
--- /dev/null
+++ b/sound/soc/cirrus/ep93xx-ac97.c
@@ -0,0 +1,446 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ASoC driver for Cirrus Logic EP93xx AC97 controller.
+ *
+ * Copyright (c) 2010 Mika Westerberg
+ *
+ * Based on s3c-ac97 ASoC driver by Jaswinder Singh.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/soc.h>
+
+#include <linux/platform_data/dma-ep93xx.h>
+#include <linux/soc/cirrus/ep93xx.h>
+
+#include "ep93xx-pcm.h"
+
+/*
+ * Per channel (1-4) registers.
+ */
+#define AC97CH(n) (((n) - 1) * 0x20)
+
+#define AC97DR(n) (AC97CH(n) + 0x0000)
+
+#define AC97RXCR(n) (AC97CH(n) + 0x0004)
+#define AC97RXCR_REN BIT(0)
+#define AC97RXCR_RX3 BIT(3)
+#define AC97RXCR_RX4 BIT(4)
+#define AC97RXCR_CM BIT(15)
+
+#define AC97TXCR(n) (AC97CH(n) + 0x0008)
+#define AC97TXCR_TEN BIT(0)
+#define AC97TXCR_TX3 BIT(3)
+#define AC97TXCR_TX4 BIT(4)
+#define AC97TXCR_CM BIT(15)
+
+#define AC97SR(n) (AC97CH(n) + 0x000c)
+#define AC97SR_TXFE BIT(1)
+#define AC97SR_TXUE BIT(6)
+
+#define AC97RISR(n) (AC97CH(n) + 0x0010)
+#define AC97ISR(n) (AC97CH(n) + 0x0014)
+#define AC97IE(n) (AC97CH(n) + 0x0018)
+
+/*
+ * Global AC97 controller registers.
+ */
+#define AC97S1DATA 0x0080
+#define AC97S2DATA 0x0084
+#define AC97S12DATA 0x0088
+
+#define AC97RGIS 0x008c
+#define AC97GIS 0x0090
+#define AC97IM 0x0094
+/*
+ * Common bits for RGIS, GIS and IM registers.
+ */
+#define AC97_SLOT2RXVALID BIT(1)
+#define AC97_CODECREADY BIT(5)
+#define AC97_SLOT2TXCOMPLETE BIT(6)
+
+#define AC97EOI 0x0098
+#define AC97EOI_WINT BIT(0)
+#define AC97EOI_CODECREADY BIT(1)
+
+#define AC97GCR 0x009c
+#define AC97GCR_AC97IFE BIT(0)
+
+#define AC97RESET 0x00a0
+#define AC97RESET_TIMEDRESET BIT(0)
+
+#define AC97SYNC 0x00a4
+#define AC97SYNC_TIMEDSYNC BIT(0)
+
+#define AC97_TIMEOUT msecs_to_jiffies(5)
+
+/**
+ * struct ep93xx_ac97_info - EP93xx AC97 controller info structure
+ * @lock: mutex serializing access to the bus (slot 1 & 2 ops)
+ * @dev: pointer to the platform device dev structure
+ * @regs: mapped AC97 controller registers
+ * @done: bus ops wait here for an interrupt
+ */
+struct ep93xx_ac97_info {
+ struct mutex lock;
+ struct device *dev;
+ void __iomem *regs;
+ struct completion done;
+ struct snd_dmaengine_dai_dma_data dma_params_rx;
+ struct snd_dmaengine_dai_dma_data dma_params_tx;
+};
+
+/* currently ALSA only supports a single AC97 device */
+static struct ep93xx_ac97_info *ep93xx_ac97_info;
+
+static struct ep93xx_dma_data ep93xx_ac97_pcm_out = {
+ .name = "ac97-pcm-out",
+ .port = EP93XX_DMA_AAC1,
+ .direction = DMA_MEM_TO_DEV,
+};
+
+static struct ep93xx_dma_data ep93xx_ac97_pcm_in = {
+ .name = "ac97-pcm-in",
+ .port = EP93XX_DMA_AAC1,
+ .direction = DMA_DEV_TO_MEM,
+};
+
+static inline unsigned ep93xx_ac97_read_reg(struct ep93xx_ac97_info *info,
+ unsigned reg)
+{
+ return __raw_readl(info->regs + reg);
+}
+
+static inline void ep93xx_ac97_write_reg(struct ep93xx_ac97_info *info,
+ unsigned reg, unsigned val)
+{
+ __raw_writel(val, info->regs + reg);
+}
+
+static unsigned short ep93xx_ac97_read(struct snd_ac97 *ac97,
+ unsigned short reg)
+{
+ struct ep93xx_ac97_info *info = ep93xx_ac97_info;
+ unsigned short val;
+
+ mutex_lock(&info->lock);
+
+ ep93xx_ac97_write_reg(info, AC97S1DATA, reg);
+ ep93xx_ac97_write_reg(info, AC97IM, AC97_SLOT2RXVALID);
+ if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT)) {
+ dev_warn(info->dev, "timeout reading register %x\n", reg);
+ mutex_unlock(&info->lock);
+ return -ETIMEDOUT;
+ }
+ val = (unsigned short)ep93xx_ac97_read_reg(info, AC97S2DATA);
+
+ mutex_unlock(&info->lock);
+ return val;
+}
+
+static void ep93xx_ac97_write(struct snd_ac97 *ac97,
+ unsigned short reg,
+ unsigned short val)
+{
+ struct ep93xx_ac97_info *info = ep93xx_ac97_info;
+
+ mutex_lock(&info->lock);
+
+ /*
+ * Writes to the codec need to be done so that slot 2 is filled in
+ * before slot 1.
+ */
+ ep93xx_ac97_write_reg(info, AC97S2DATA, val);
+ ep93xx_ac97_write_reg(info, AC97S1DATA, reg);
+
+ ep93xx_ac97_write_reg(info, AC97IM, AC97_SLOT2TXCOMPLETE);
+ if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT))
+ dev_warn(info->dev, "timeout writing register %x\n", reg);
+
+ mutex_unlock(&info->lock);
+}
+
+static void ep93xx_ac97_warm_reset(struct snd_ac97 *ac97)
+{
+ struct ep93xx_ac97_info *info = ep93xx_ac97_info;
+
+ mutex_lock(&info->lock);
+
+ /*
+ * We are assuming that before this functions gets called, the codec
+ * BIT_CLK is stopped by forcing the codec into powerdown mode. We can
+ * control the SYNC signal directly via AC97SYNC register. Using
+ * TIMEDSYNC the controller will keep the SYNC high > 1us.
+ */
+ ep93xx_ac97_write_reg(info, AC97SYNC, AC97SYNC_TIMEDSYNC);
+ ep93xx_ac97_write_reg(info, AC97IM, AC97_CODECREADY);
+ if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT))
+ dev_warn(info->dev, "codec warm reset timeout\n");
+
+ mutex_unlock(&info->lock);
+}
+
+static void ep93xx_ac97_cold_reset(struct snd_ac97 *ac97)
+{
+ struct ep93xx_ac97_info *info = ep93xx_ac97_info;
+
+ mutex_lock(&info->lock);
+
+ /*
+ * For doing cold reset, we disable the AC97 controller interface, clear
+ * WINT and CODECREADY bits, and finally enable the interface again.
+ */
+ ep93xx_ac97_write_reg(info, AC97GCR, 0);
+ ep93xx_ac97_write_reg(info, AC97EOI, AC97EOI_CODECREADY | AC97EOI_WINT);
+ ep93xx_ac97_write_reg(info, AC97GCR, AC97GCR_AC97IFE);
+
+ /*
+ * Now, assert the reset and wait for the codec to become ready.
+ */
+ ep93xx_ac97_write_reg(info, AC97RESET, AC97RESET_TIMEDRESET);
+ ep93xx_ac97_write_reg(info, AC97IM, AC97_CODECREADY);
+ if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT))
+ dev_warn(info->dev, "codec cold reset timeout\n");
+
+ /*
+ * Give the codec some time to come fully out from the reset. This way
+ * we ensure that the subsequent reads/writes will work.
+ */
+ usleep_range(15000, 20000);
+
+ mutex_unlock(&info->lock);
+}
+
+static irqreturn_t ep93xx_ac97_interrupt(int irq, void *dev_id)
+{
+ struct ep93xx_ac97_info *info = dev_id;
+ unsigned status, mask;
+
+ /*
+ * Just mask out the interrupt and wake up the waiting thread.
+ * Interrupts are cleared via reading/writing to slot 1 & 2 registers by
+ * the waiting thread.
+ */
+ status = ep93xx_ac97_read_reg(info, AC97GIS);
+ mask = ep93xx_ac97_read_reg(info, AC97IM);
+ mask &= ~status;
+ ep93xx_ac97_write_reg(info, AC97IM, mask);
+
+ complete(&info->done);
+ return IRQ_HANDLED;
+}
+
+static struct snd_ac97_bus_ops ep93xx_ac97_ops = {
+ .read = ep93xx_ac97_read,
+ .write = ep93xx_ac97_write,
+ .reset = ep93xx_ac97_cold_reset,
+ .warm_reset = ep93xx_ac97_warm_reset,
+};
+
+static int ep93xx_ac97_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct ep93xx_ac97_info *info = snd_soc_dai_get_drvdata(dai);
+ unsigned v = 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ /*
+ * Enable compact mode, TX slots 3 & 4, and the TX FIFO
+ * itself.
+ */
+ v |= AC97TXCR_CM;
+ v |= AC97TXCR_TX3 | AC97TXCR_TX4;
+ v |= AC97TXCR_TEN;
+ ep93xx_ac97_write_reg(info, AC97TXCR(1), v);
+ } else {
+ /*
+ * Enable compact mode, RX slots 3 & 4, and the RX FIFO
+ * itself.
+ */
+ v |= AC97RXCR_CM;
+ v |= AC97RXCR_RX3 | AC97RXCR_RX4;
+ v |= AC97RXCR_REN;
+ ep93xx_ac97_write_reg(info, AC97RXCR(1), v);
+ }
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ /*
+ * As per Cirrus EP93xx errata described below:
+ *
+ * https://www.cirrus.com/en/pubs/errata/ER667E2B.pdf
+ *
+ * we will wait for the TX FIFO to be empty before
+ * clearing the TEN bit.
+ */
+ unsigned long timeout = jiffies + AC97_TIMEOUT;
+
+ do {
+ v = ep93xx_ac97_read_reg(info, AC97SR(1));
+ if (time_after(jiffies, timeout)) {
+ dev_warn(info->dev, "TX timeout\n");
+ break;
+ }
+ } while (!(v & (AC97SR_TXFE | AC97SR_TXUE)));
+
+ /* disable the TX FIFO */
+ ep93xx_ac97_write_reg(info, AC97TXCR(1), 0);
+ } else {
+ /* disable the RX FIFO */
+ ep93xx_ac97_write_reg(info, AC97RXCR(1), 0);
+ }
+ break;
+
+ default:
+ dev_warn(info->dev, "unknown command %d\n", cmd);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ep93xx_ac97_dai_probe(struct snd_soc_dai *dai)
+{
+ struct ep93xx_ac97_info *info = snd_soc_dai_get_drvdata(dai);
+
+ info->dma_params_tx.filter_data = &ep93xx_ac97_pcm_out;
+ info->dma_params_rx.filter_data = &ep93xx_ac97_pcm_in;
+
+ dai->playback_dma_data = &info->dma_params_tx;
+ dai->capture_dma_data = &info->dma_params_rx;
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops ep93xx_ac97_dai_ops = {
+ .trigger = ep93xx_ac97_trigger,
+};
+
+static struct snd_soc_dai_driver ep93xx_ac97_dai = {
+ .name = "ep93xx-ac97",
+ .id = 0,
+ .probe = ep93xx_ac97_dai_probe,
+ .playback = {
+ .stream_name = "AC97 Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "AC97 Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &ep93xx_ac97_dai_ops,
+};
+
+static const struct snd_soc_component_driver ep93xx_ac97_component = {
+ .name = "ep93xx-ac97",
+ .legacy_dai_naming = 1,
+};
+
+static int ep93xx_ac97_probe(struct platform_device *pdev)
+{
+ struct ep93xx_ac97_info *info;
+ int irq;
+ int ret;
+
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(info->regs))
+ return PTR_ERR(info->regs);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0)
+ return irq < 0 ? irq : -ENODEV;
+
+ ret = devm_request_irq(&pdev->dev, irq, ep93xx_ac97_interrupt,
+ IRQF_TRIGGER_HIGH, pdev->name, info);
+ if (ret)
+ goto fail;
+
+ dev_set_drvdata(&pdev->dev, info);
+
+ mutex_init(&info->lock);
+ init_completion(&info->done);
+ info->dev = &pdev->dev;
+
+ ep93xx_ac97_info = info;
+ platform_set_drvdata(pdev, info);
+
+ ret = snd_soc_set_ac97_ops(&ep93xx_ac97_ops);
+ if (ret)
+ goto fail;
+
+ ret = snd_soc_register_component(&pdev->dev, &ep93xx_ac97_component,
+ &ep93xx_ac97_dai, 1);
+ if (ret)
+ goto fail;
+
+ ret = devm_ep93xx_pcm_platform_register(&pdev->dev);
+ if (ret)
+ goto fail_unregister;
+
+ return 0;
+
+fail_unregister:
+ snd_soc_unregister_component(&pdev->dev);
+fail:
+ ep93xx_ac97_info = NULL;
+ snd_soc_set_ac97_ops(NULL);
+ return ret;
+}
+
+static int ep93xx_ac97_remove(struct platform_device *pdev)
+{
+ struct ep93xx_ac97_info *info = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_component(&pdev->dev);
+
+ /* disable the AC97 controller */
+ ep93xx_ac97_write_reg(info, AC97GCR, 0);
+
+ ep93xx_ac97_info = NULL;
+
+ snd_soc_set_ac97_ops(NULL);
+
+ return 0;
+}
+
+static struct platform_driver ep93xx_ac97_driver = {
+ .probe = ep93xx_ac97_probe,
+ .remove = ep93xx_ac97_remove,
+ .driver = {
+ .name = "ep93xx-ac97",
+ },
+};
+
+module_platform_driver(ep93xx_ac97_driver);
+
+MODULE_DESCRIPTION("EP93xx AC97 ASoC Driver");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ep93xx-ac97");
diff --git a/sound/soc/cirrus/ep93xx-i2s.c b/sound/soc/cirrus/ep93xx-i2s.c
new file mode 100644
index 000000000..982151330
--- /dev/null
+++ b/sound/soc/cirrus/ep93xx-i2s.c
@@ -0,0 +1,519 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/sound/soc/ep93xx-i2s.c
+ * EP93xx I2S driver
+ *
+ * Copyright (C) 2010 Ryan Mallon
+ *
+ * Based on the original driver by:
+ * Copyright (C) 2007 Chase Douglas <chasedouglas@gmail>
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <linux/platform_data/dma-ep93xx.h>
+#include <linux/soc/cirrus/ep93xx.h>
+
+#include "ep93xx-pcm.h"
+
+#define EP93XX_I2S_TXCLKCFG 0x00
+#define EP93XX_I2S_RXCLKCFG 0x04
+#define EP93XX_I2S_GLSTS 0x08
+#define EP93XX_I2S_GLCTRL 0x0C
+
+#define EP93XX_I2S_I2STX0LFT 0x10
+#define EP93XX_I2S_I2STX0RT 0x14
+
+#define EP93XX_I2S_TXLINCTRLDATA 0x28
+#define EP93XX_I2S_TXCTRL 0x2C
+#define EP93XX_I2S_TXWRDLEN 0x30
+#define EP93XX_I2S_TX0EN 0x34
+
+#define EP93XX_I2S_RXLINCTRLDATA 0x58
+#define EP93XX_I2S_RXCTRL 0x5C
+#define EP93XX_I2S_RXWRDLEN 0x60
+#define EP93XX_I2S_RX0EN 0x64
+
+#define EP93XX_I2S_WRDLEN_16 (0 << 0)
+#define EP93XX_I2S_WRDLEN_24 (1 << 0)
+#define EP93XX_I2S_WRDLEN_32 (2 << 0)
+
+#define EP93XX_I2S_RXLINCTRLDATA_R_JUST BIT(1) /* Right justify */
+
+#define EP93XX_I2S_TXLINCTRLDATA_R_JUST BIT(2) /* Right justify */
+
+/*
+ * Transmit empty interrupt level select:
+ * 0 - Generate interrupt when FIFO is half empty
+ * 1 - Generate interrupt when FIFO is empty
+ */
+#define EP93XX_I2S_TXCTRL_TXEMPTY_LVL BIT(0)
+#define EP93XX_I2S_TXCTRL_TXUFIE BIT(1) /* Transmit interrupt enable */
+
+#define EP93XX_I2S_CLKCFG_LRS (1 << 0) /* lrclk polarity */
+#define EP93XX_I2S_CLKCFG_CKP (1 << 1) /* Bit clock polarity */
+#define EP93XX_I2S_CLKCFG_REL (1 << 2) /* First bit transition */
+#define EP93XX_I2S_CLKCFG_MASTER (1 << 3) /* Master mode */
+#define EP93XX_I2S_CLKCFG_NBCG (1 << 4) /* Not bit clock gating */
+
+#define EP93XX_I2S_GLSTS_TX0_FIFO_FULL BIT(12)
+
+struct ep93xx_i2s_info {
+ struct clk *mclk;
+ struct clk *sclk;
+ struct clk *lrclk;
+ void __iomem *regs;
+ struct snd_dmaengine_dai_dma_data dma_params_rx;
+ struct snd_dmaengine_dai_dma_data dma_params_tx;
+};
+
+static struct ep93xx_dma_data ep93xx_i2s_dma_data[] = {
+ [SNDRV_PCM_STREAM_PLAYBACK] = {
+ .name = "i2s-pcm-out",
+ .port = EP93XX_DMA_I2S1,
+ .direction = DMA_MEM_TO_DEV,
+ },
+ [SNDRV_PCM_STREAM_CAPTURE] = {
+ .name = "i2s-pcm-in",
+ .port = EP93XX_DMA_I2S1,
+ .direction = DMA_DEV_TO_MEM,
+ },
+};
+
+static inline void ep93xx_i2s_write_reg(struct ep93xx_i2s_info *info,
+ unsigned reg, unsigned val)
+{
+ __raw_writel(val, info->regs + reg);
+}
+
+static inline unsigned ep93xx_i2s_read_reg(struct ep93xx_i2s_info *info,
+ unsigned reg)
+{
+ return __raw_readl(info->regs + reg);
+}
+
+static void ep93xx_i2s_enable(struct ep93xx_i2s_info *info, int stream)
+{
+ unsigned base_reg;
+
+ if ((ep93xx_i2s_read_reg(info, EP93XX_I2S_TX0EN) & 0x1) == 0 &&
+ (ep93xx_i2s_read_reg(info, EP93XX_I2S_RX0EN) & 0x1) == 0) {
+ /* Enable clocks */
+ clk_prepare_enable(info->mclk);
+ clk_prepare_enable(info->sclk);
+ clk_prepare_enable(info->lrclk);
+
+ /* Enable i2s */
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_GLCTRL, 1);
+ }
+
+ /* Enable fifo */
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ base_reg = EP93XX_I2S_TX0EN;
+ else
+ base_reg = EP93XX_I2S_RX0EN;
+ ep93xx_i2s_write_reg(info, base_reg, 1);
+
+ /* Enable TX IRQs (FIFO empty or underflow) */
+ if (IS_ENABLED(CONFIG_SND_EP93XX_SOC_I2S_WATCHDOG) &&
+ stream == SNDRV_PCM_STREAM_PLAYBACK)
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TXCTRL,
+ EP93XX_I2S_TXCTRL_TXEMPTY_LVL |
+ EP93XX_I2S_TXCTRL_TXUFIE);
+}
+
+static void ep93xx_i2s_disable(struct ep93xx_i2s_info *info, int stream)
+{
+ unsigned base_reg;
+
+ /* Disable IRQs */
+ if (IS_ENABLED(CONFIG_SND_EP93XX_SOC_I2S_WATCHDOG) &&
+ stream == SNDRV_PCM_STREAM_PLAYBACK)
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TXCTRL, 0);
+
+ /* Disable fifo */
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ base_reg = EP93XX_I2S_TX0EN;
+ else
+ base_reg = EP93XX_I2S_RX0EN;
+ ep93xx_i2s_write_reg(info, base_reg, 0);
+
+ if ((ep93xx_i2s_read_reg(info, EP93XX_I2S_TX0EN) & 0x1) == 0 &&
+ (ep93xx_i2s_read_reg(info, EP93XX_I2S_RX0EN) & 0x1) == 0) {
+ /* Disable i2s */
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_GLCTRL, 0);
+
+ /* Disable clocks */
+ clk_disable_unprepare(info->lrclk);
+ clk_disable_unprepare(info->sclk);
+ clk_disable_unprepare(info->mclk);
+ }
+}
+
+/*
+ * According to documentation I2S controller can handle underflow conditions
+ * just fine, but in reality the state machine is sometimes confused so that
+ * the whole stream is shifted by one byte. The watchdog below disables the TX
+ * FIFO, fills the buffer with zeroes and re-enables the FIFO. State machine
+ * is being reset and by filling the buffer we get some time before next
+ * underflow happens.
+ */
+static irqreturn_t ep93xx_i2s_interrupt(int irq, void *dev_id)
+{
+ struct ep93xx_i2s_info *info = dev_id;
+
+ /* Disable FIFO */
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TX0EN, 0);
+ /*
+ * Fill TX FIFO with zeroes, this way we can defer next IRQs as much as
+ * possible and get more time for DMA to catch up. Actually there are
+ * only 8 samples in this FIFO, so even on 8kHz maximum deferral here is
+ * 1ms.
+ */
+ while (!(ep93xx_i2s_read_reg(info, EP93XX_I2S_GLSTS) &
+ EP93XX_I2S_GLSTS_TX0_FIFO_FULL)) {
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_I2STX0LFT, 0);
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_I2STX0RT, 0);
+ }
+ /* Re-enable FIFO */
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TX0EN, 1);
+
+ return IRQ_HANDLED;
+}
+
+static int ep93xx_i2s_dai_probe(struct snd_soc_dai *dai)
+{
+ struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(dai);
+
+ info->dma_params_tx.filter_data =
+ &ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_PLAYBACK];
+ info->dma_params_rx.filter_data =
+ &ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_CAPTURE];
+
+ dai->playback_dma_data = &info->dma_params_tx;
+ dai->capture_dma_data = &info->dma_params_rx;
+
+ return 0;
+}
+
+static void ep93xx_i2s_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(dai);
+
+ ep93xx_i2s_disable(info, substream->stream);
+}
+
+static int ep93xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
+ unsigned int fmt)
+{
+ struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned int clk_cfg;
+ unsigned int txlin_ctrl = 0;
+ unsigned int rxlin_ctrl = 0;
+
+ clk_cfg = ep93xx_i2s_read_reg(info, EP93XX_I2S_RXCLKCFG);
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ clk_cfg |= EP93XX_I2S_CLKCFG_REL;
+ break;
+
+ case SND_SOC_DAIFMT_LEFT_J:
+ clk_cfg &= ~EP93XX_I2S_CLKCFG_REL;
+ break;
+
+ case SND_SOC_DAIFMT_RIGHT_J:
+ clk_cfg &= ~EP93XX_I2S_CLKCFG_REL;
+ rxlin_ctrl |= EP93XX_I2S_RXLINCTRLDATA_R_JUST;
+ txlin_ctrl |= EP93XX_I2S_TXLINCTRLDATA_R_JUST;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_BP_FP:
+ /* CPU is provider */
+ clk_cfg |= EP93XX_I2S_CLKCFG_MASTER;
+ break;
+
+ case SND_SOC_DAIFMT_BC_FC:
+ /* Codec is provider */
+ clk_cfg &= ~EP93XX_I2S_CLKCFG_MASTER;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ /* Negative bit clock, lrclk low on left word */
+ clk_cfg &= ~(EP93XX_I2S_CLKCFG_CKP | EP93XX_I2S_CLKCFG_LRS);
+ break;
+
+ case SND_SOC_DAIFMT_NB_IF:
+ /* Negative bit clock, lrclk low on right word */
+ clk_cfg &= ~EP93XX_I2S_CLKCFG_CKP;
+ clk_cfg |= EP93XX_I2S_CLKCFG_LRS;
+ break;
+
+ case SND_SOC_DAIFMT_IB_NF:
+ /* Positive bit clock, lrclk low on left word */
+ clk_cfg |= EP93XX_I2S_CLKCFG_CKP;
+ clk_cfg &= ~EP93XX_I2S_CLKCFG_LRS;
+ break;
+
+ case SND_SOC_DAIFMT_IB_IF:
+ /* Positive bit clock, lrclk low on right word */
+ clk_cfg |= EP93XX_I2S_CLKCFG_CKP | EP93XX_I2S_CLKCFG_LRS;
+ break;
+ }
+
+ /* Write new register values */
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_RXCLKCFG, clk_cfg);
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TXCLKCFG, clk_cfg);
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_RXLINCTRLDATA, rxlin_ctrl);
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TXLINCTRLDATA, txlin_ctrl);
+ return 0;
+}
+
+static int ep93xx_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(dai);
+ unsigned word_len, div, sdiv, lrdiv;
+ int err;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ word_len = EP93XX_I2S_WRDLEN_16;
+ break;
+
+ case SNDRV_PCM_FORMAT_S24_LE:
+ word_len = EP93XX_I2S_WRDLEN_24;
+ break;
+
+ case SNDRV_PCM_FORMAT_S32_LE:
+ word_len = EP93XX_I2S_WRDLEN_32;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_TXWRDLEN, word_len);
+ else
+ ep93xx_i2s_write_reg(info, EP93XX_I2S_RXWRDLEN, word_len);
+
+ /*
+ * EP93xx I2S module can be setup so SCLK / LRCLK value can be
+ * 32, 64, 128. MCLK / SCLK value can be 2 and 4.
+ * We set LRCLK equal to `rate' and minimum SCLK / LRCLK
+ * value is 64, because our sample size is 32 bit * 2 channels.
+ * I2S standard permits us to transmit more bits than
+ * the codec uses.
+ */
+ div = clk_get_rate(info->mclk) / params_rate(params);
+ sdiv = 4;
+ if (div > (256 + 512) / 2) {
+ lrdiv = 128;
+ } else {
+ lrdiv = 64;
+ if (div < (128 + 256) / 2)
+ sdiv = 2;
+ }
+
+ err = clk_set_rate(info->sclk, clk_get_rate(info->mclk) / sdiv);
+ if (err)
+ return err;
+
+ err = clk_set_rate(info->lrclk, clk_get_rate(info->sclk) / lrdiv);
+ if (err)
+ return err;
+
+ ep93xx_i2s_enable(info, substream->stream);
+ return 0;
+}
+
+static int ep93xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(cpu_dai);
+
+ if (dir == SND_SOC_CLOCK_IN || clk_id != 0)
+ return -EINVAL;
+
+ return clk_set_rate(info->mclk, freq);
+}
+
+#ifdef CONFIG_PM
+static int ep93xx_i2s_suspend(struct snd_soc_component *component)
+{
+ struct ep93xx_i2s_info *info = snd_soc_component_get_drvdata(component);
+
+ if (!snd_soc_component_active(component))
+ return 0;
+
+ ep93xx_i2s_disable(info, SNDRV_PCM_STREAM_PLAYBACK);
+ ep93xx_i2s_disable(info, SNDRV_PCM_STREAM_CAPTURE);
+
+ return 0;
+}
+
+static int ep93xx_i2s_resume(struct snd_soc_component *component)
+{
+ struct ep93xx_i2s_info *info = snd_soc_component_get_drvdata(component);
+
+ if (!snd_soc_component_active(component))
+ return 0;
+
+ ep93xx_i2s_enable(info, SNDRV_PCM_STREAM_PLAYBACK);
+ ep93xx_i2s_enable(info, SNDRV_PCM_STREAM_CAPTURE);
+
+ return 0;
+}
+#else
+#define ep93xx_i2s_suspend NULL
+#define ep93xx_i2s_resume NULL
+#endif
+
+static const struct snd_soc_dai_ops ep93xx_i2s_dai_ops = {
+ .shutdown = ep93xx_i2s_shutdown,
+ .hw_params = ep93xx_i2s_hw_params,
+ .set_sysclk = ep93xx_i2s_set_sysclk,
+ .set_fmt = ep93xx_i2s_set_dai_fmt,
+};
+
+#define EP93XX_I2S_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver ep93xx_i2s_dai = {
+ .symmetric_rate = 1,
+ .probe = ep93xx_i2s_dai_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = EP93XX_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = EP93XX_I2S_FORMATS,
+ },
+ .ops = &ep93xx_i2s_dai_ops,
+};
+
+static const struct snd_soc_component_driver ep93xx_i2s_component = {
+ .name = "ep93xx-i2s",
+ .suspend = ep93xx_i2s_suspend,
+ .resume = ep93xx_i2s_resume,
+ .legacy_dai_naming = 1,
+};
+
+static int ep93xx_i2s_probe(struct platform_device *pdev)
+{
+ struct ep93xx_i2s_info *info;
+ int err;
+
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(info->regs))
+ return PTR_ERR(info->regs);
+
+ if (IS_ENABLED(CONFIG_SND_EP93XX_SOC_I2S_WATCHDOG)) {
+ int irq = platform_get_irq(pdev, 0);
+ if (irq <= 0)
+ return irq < 0 ? irq : -ENODEV;
+
+ err = devm_request_irq(&pdev->dev, irq, ep93xx_i2s_interrupt, 0,
+ pdev->name, info);
+ if (err)
+ return err;
+ }
+
+ info->mclk = clk_get(&pdev->dev, "mclk");
+ if (IS_ERR(info->mclk)) {
+ err = PTR_ERR(info->mclk);
+ goto fail;
+ }
+
+ info->sclk = clk_get(&pdev->dev, "sclk");
+ if (IS_ERR(info->sclk)) {
+ err = PTR_ERR(info->sclk);
+ goto fail_put_mclk;
+ }
+
+ info->lrclk = clk_get(&pdev->dev, "lrclk");
+ if (IS_ERR(info->lrclk)) {
+ err = PTR_ERR(info->lrclk);
+ goto fail_put_sclk;
+ }
+
+ dev_set_drvdata(&pdev->dev, info);
+
+ err = devm_snd_soc_register_component(&pdev->dev, &ep93xx_i2s_component,
+ &ep93xx_i2s_dai, 1);
+ if (err)
+ goto fail_put_lrclk;
+
+ err = devm_ep93xx_pcm_platform_register(&pdev->dev);
+ if (err)
+ goto fail_put_lrclk;
+
+ return 0;
+
+fail_put_lrclk:
+ clk_put(info->lrclk);
+fail_put_sclk:
+ clk_put(info->sclk);
+fail_put_mclk:
+ clk_put(info->mclk);
+fail:
+ return err;
+}
+
+static int ep93xx_i2s_remove(struct platform_device *pdev)
+{
+ struct ep93xx_i2s_info *info = dev_get_drvdata(&pdev->dev);
+
+ clk_put(info->lrclk);
+ clk_put(info->sclk);
+ clk_put(info->mclk);
+ return 0;
+}
+
+static struct platform_driver ep93xx_i2s_driver = {
+ .probe = ep93xx_i2s_probe,
+ .remove = ep93xx_i2s_remove,
+ .driver = {
+ .name = "ep93xx-i2s",
+ },
+};
+
+module_platform_driver(ep93xx_i2s_driver);
+
+MODULE_ALIAS("platform:ep93xx-i2s");
+MODULE_AUTHOR("Ryan Mallon");
+MODULE_DESCRIPTION("EP93XX I2S driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/cirrus/ep93xx-pcm.c b/sound/soc/cirrus/ep93xx-pcm.c
new file mode 100644
index 000000000..fa72acd8d
--- /dev/null
+++ b/sound/soc/cirrus/ep93xx-pcm.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/sound/arm/ep93xx-pcm.c - EP93xx ALSA PCM interface
+ *
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Copyright (C) 2006 Applied Data Systems
+ *
+ * Rewritten for the SoC audio subsystem (Based on PXA2xx code):
+ * Copyright (c) 2008 Ryan Mallon
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dmaengine.h>
+
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
+
+#include <linux/platform_data/dma-ep93xx.h>
+
+#include "ep93xx-pcm.h"
+
+static const struct snd_pcm_hardware ep93xx_pcm_hardware = {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER),
+ .buffer_bytes_max = 131072,
+ .period_bytes_min = 32,
+ .period_bytes_max = 32768,
+ .periods_min = 1,
+ .periods_max = 32,
+ .fifo_size = 32,
+};
+
+static bool ep93xx_pcm_dma_filter(struct dma_chan *chan, void *filter_param)
+{
+ struct ep93xx_dma_data *data = filter_param;
+
+ if (data->direction == ep93xx_dma_chan_direction(chan)) {
+ chan->private = data;
+ return true;
+ }
+
+ return false;
+}
+
+static const struct snd_dmaengine_pcm_config ep93xx_dmaengine_pcm_config = {
+ .pcm_hardware = &ep93xx_pcm_hardware,
+ .compat_filter_fn = ep93xx_pcm_dma_filter,
+ .prealloc_buffer_size = 131072,
+};
+
+int devm_ep93xx_pcm_platform_register(struct device *dev)
+{
+ return devm_snd_dmaengine_pcm_register(dev,
+ &ep93xx_dmaengine_pcm_config,
+ SND_DMAENGINE_PCM_FLAG_NO_DT |
+ SND_DMAENGINE_PCM_FLAG_COMPAT);
+}
+EXPORT_SYMBOL_GPL(devm_ep93xx_pcm_platform_register);
+
+MODULE_AUTHOR("Ryan Mallon");
+MODULE_DESCRIPTION("EP93xx ALSA PCM interface");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/cirrus/ep93xx-pcm.h b/sound/soc/cirrus/ep93xx-pcm.h
new file mode 100644
index 000000000..8e1c722bf
--- /dev/null
+++ b/sound/soc/cirrus/ep93xx-pcm.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ */
+
+#ifndef __EP93XX_PCM_H__
+#define __EP93XX_PCM_H__
+
+int devm_ep93xx_pcm_platform_register(struct device *dev);
+
+#endif
diff --git a/sound/soc/cirrus/simone.c b/sound/soc/cirrus/simone.c
new file mode 100644
index 000000000..801c90877
--- /dev/null
+++ b/sound/soc/cirrus/simone.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * simone.c -- ASoC audio for Simplemachines Sim.One board
+ *
+ * Copyright (c) 2010 Mika Westerberg
+ *
+ * Based on snappercl15 machine driver by Ryan Mallon.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/soc/cirrus/ep93xx.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <asm/mach-types.h>
+
+SND_SOC_DAILINK_DEFS(hifi,
+ DAILINK_COMP_ARRAY(COMP_CPU("ep93xx-ac97")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("ac97-codec", "ac97-hifi")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("ep93xx-ac97")));
+
+static struct snd_soc_dai_link simone_dai = {
+ .name = "AC97",
+ .stream_name = "AC97 HiFi",
+ SND_SOC_DAILINK_REG(hifi),
+};
+
+static struct snd_soc_card snd_soc_simone = {
+ .name = "Sim.One",
+ .owner = THIS_MODULE,
+ .dai_link = &simone_dai,
+ .num_links = 1,
+};
+
+static struct platform_device *simone_snd_ac97_device;
+
+static int simone_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_simone;
+ int ret;
+
+ simone_snd_ac97_device = platform_device_register_simple("ac97-codec",
+ -1, NULL, 0);
+ if (IS_ERR(simone_snd_ac97_device))
+ return PTR_ERR(simone_snd_ac97_device);
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+ platform_device_unregister(simone_snd_ac97_device);
+ }
+
+ return ret;
+}
+
+static int simone_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+ platform_device_unregister(simone_snd_ac97_device);
+
+ return 0;
+}
+
+static struct platform_driver simone_driver = {
+ .driver = {
+ .name = "simone-audio",
+ },
+ .probe = simone_probe,
+ .remove = simone_remove,
+};
+
+module_platform_driver(simone_driver);
+
+MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@iki.fi>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:simone-audio");
diff --git a/sound/soc/cirrus/snappercl15.c b/sound/soc/cirrus/snappercl15.c
new file mode 100644
index 000000000..a286f5bee
--- /dev/null
+++ b/sound/soc/cirrus/snappercl15.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
+ *
+ * Copyright (C) 2008 Bluewater Systems Ltd
+ * Author: Ryan Mallon
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/soc/cirrus/ep93xx.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/tlv320aic23.h"
+
+#define CODEC_CLOCK 5644800
+
+static int snappercl15_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);
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ int err;
+
+ err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
+ SND_SOC_CLOCK_IN);
+ if (err)
+ return err;
+
+ err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
+ SND_SOC_CLOCK_OUT);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static const struct snd_soc_ops snappercl15_ops = {
+ .hw_params = snappercl15_hw_params,
+};
+
+static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_LINE("Line In", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ {"Headphone Jack", NULL, "LHPOUT"},
+ {"Headphone Jack", NULL, "RHPOUT"},
+
+ {"LLINEIN", NULL, "Line In"},
+ {"RLINEIN", NULL, "Line In"},
+
+ {"MICIN", NULL, "Mic Jack"},
+};
+
+SND_SOC_DAILINK_DEFS(aic23,
+ DAILINK_COMP_ARRAY(COMP_CPU("ep93xx-i2s")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec.0-001a",
+ "tlv320aic23-hifi")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("ep93xx-i2s")));
+
+static struct snd_soc_dai_link snappercl15_dai = {
+ .name = "tlv320aic23",
+ .stream_name = "AIC23",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBC_CFC,
+ .ops = &snappercl15_ops,
+ SND_SOC_DAILINK_REG(aic23),
+};
+
+static struct snd_soc_card snd_soc_snappercl15 = {
+ .name = "Snapper CL15",
+ .owner = THIS_MODULE,
+ .dai_link = &snappercl15_dai,
+ .num_links = 1,
+
+ .dapm_widgets = tlv320aic23_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
+ .dapm_routes = audio_map,
+ .num_dapm_routes = ARRAY_SIZE(audio_map),
+};
+
+static int snappercl15_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_snappercl15;
+ int ret;
+
+ ret = ep93xx_i2s_acquire();
+ if (ret)
+ return ret;
+
+ card->dev = &pdev->dev;
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+ ep93xx_i2s_release();
+ }
+
+ return ret;
+}
+
+static int snappercl15_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+ ep93xx_i2s_release();
+
+ return 0;
+}
+
+static struct platform_driver snappercl15_driver = {
+ .driver = {
+ .name = "snappercl15-audio",
+ },
+ .probe = snappercl15_probe,
+ .remove = snappercl15_remove,
+};
+
+module_platform_driver(snappercl15_driver);
+
+MODULE_AUTHOR("Ryan Mallon");
+MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:snappercl15-audio");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 17:53:48 +0000