summaryrefslogtreecommitdiffstats
path: root/sound/soc/pxa/mmp-sspa.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /sound/soc/pxa/mmp-sspa.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/pxa/mmp-sspa.c')
-rw-r--r--sound/soc/pxa/mmp-sspa.c585
1 files changed, 585 insertions, 0 deletions
diff --git a/sound/soc/pxa/mmp-sspa.c b/sound/soc/pxa/mmp-sspa.c
new file mode 100644
index 0000000000..abfaf3cdf5
--- /dev/null
+++ b/sound/soc/pxa/mmp-sspa.c
@@ -0,0 +1,585 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * linux/sound/soc/pxa/mmp-sspa.c
+ * Base on pxa2xx-ssp.c
+ *
+ * Copyright (C) 2011 Marvell International Ltd.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/dmaengine.h>
+#include <linux/pm_runtime.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
+#include "mmp-sspa.h"
+
+/*
+ * SSPA audio private data
+ */
+struct sspa_priv {
+ void __iomem *tx_base;
+ void __iomem *rx_base;
+
+ struct snd_dmaengine_dai_dma_data playback_dma_data;
+ struct snd_dmaengine_dai_dma_data capture_dma_data;
+ struct clk *clk;
+ struct clk *audio_clk;
+ struct clk *sysclk;
+
+ int running_cnt;
+ u32 sp;
+ u32 ctrl;
+};
+
+static void mmp_sspa_tx_enable(struct sspa_priv *sspa)
+{
+ unsigned int sspa_sp = sspa->sp;
+
+ sspa_sp &= ~SSPA_SP_MSL;
+ sspa_sp |= SSPA_SP_S_EN;
+ sspa_sp |= SSPA_SP_WEN;
+ __raw_writel(sspa_sp, sspa->tx_base + SSPA_SP);
+}
+
+static void mmp_sspa_tx_disable(struct sspa_priv *sspa)
+{
+ unsigned int sspa_sp = sspa->sp;
+
+ sspa_sp &= ~SSPA_SP_MSL;
+ sspa_sp &= ~SSPA_SP_S_EN;
+ sspa_sp |= SSPA_SP_WEN;
+ __raw_writel(sspa_sp, sspa->tx_base + SSPA_SP);
+}
+
+static void mmp_sspa_rx_enable(struct sspa_priv *sspa)
+{
+ unsigned int sspa_sp = sspa->sp;
+
+ sspa_sp |= SSPA_SP_S_EN;
+ sspa_sp |= SSPA_SP_WEN;
+ __raw_writel(sspa_sp, sspa->rx_base + SSPA_SP);
+}
+
+static void mmp_sspa_rx_disable(struct sspa_priv *sspa)
+{
+ unsigned int sspa_sp = sspa->sp;
+
+ sspa_sp &= ~SSPA_SP_S_EN;
+ sspa_sp |= SSPA_SP_WEN;
+ __raw_writel(sspa_sp, sspa->rx_base + SSPA_SP);
+}
+
+static int mmp_sspa_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
+
+ clk_prepare_enable(sspa->sysclk);
+ clk_prepare_enable(sspa->clk);
+
+ return 0;
+}
+
+static void mmp_sspa_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
+
+ clk_disable_unprepare(sspa->clk);
+ clk_disable_unprepare(sspa->sysclk);
+}
+
+/*
+ * Set the SSP ports SYSCLK.
+ */
+static int mmp_sspa_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(cpu_dai);
+ struct device *dev = cpu_dai->component->dev;
+ int ret = 0;
+
+ if (dev->of_node)
+ return -ENOTSUPP;
+
+ switch (clk_id) {
+ case MMP_SSPA_CLK_AUDIO:
+ ret = clk_set_rate(sspa->audio_clk, freq);
+ if (ret)
+ return ret;
+ break;
+ case MMP_SSPA_CLK_PLL:
+ case MMP_SSPA_CLK_VCXO:
+ /* not support yet */
+ return -EINVAL;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int mmp_sspa_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
+ int source, unsigned int freq_in,
+ unsigned int freq_out)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(cpu_dai);
+ struct device *dev = cpu_dai->component->dev;
+ int ret = 0;
+
+ if (dev->of_node)
+ return -ENOTSUPP;
+
+ switch (pll_id) {
+ case MMP_SYSCLK:
+ ret = clk_set_rate(sspa->sysclk, freq_out);
+ if (ret)
+ return ret;
+ break;
+ case MMP_SSPA_CLK:
+ ret = clk_set_rate(sspa->clk, freq_out);
+ if (ret)
+ return ret;
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/*
+ * Set up the sspa dai format.
+ */
+static int mmp_sspa_set_dai_fmt(struct snd_soc_dai *cpu_dai,
+ unsigned int fmt)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(cpu_dai);
+
+ /* reset port settings */
+ sspa->sp = SSPA_SP_WEN | SSPA_SP_S_RST | SSPA_SP_FFLUSH;
+ sspa->ctrl = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_BP_FP:
+ sspa->sp |= SSPA_SP_MSL;
+ break;
+ case SND_SOC_DAIFMT_BC_FC:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ sspa->sp |= SSPA_SP_FSP;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ sspa->ctrl |= SSPA_CTL_XDATDLY(1);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Since we are configuring the timings for the format by hand
+ * we have to defer some things until hw_params() where we
+ * know parameters like the sample size.
+ */
+ return 0;
+}
+
+/*
+ * Set the SSPA audio DMA parameters and sample size.
+ * Can be called multiple times by oss emulation.
+ */
+static int mmp_sspa_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
+ struct device *dev = dai->component->dev;
+ u32 sspa_ctrl = sspa->ctrl;
+ int bits;
+ int bitval;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S8:
+ bits = 8;
+ bitval = SSPA_CTL_8_BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S16_LE:
+ bits = 16;
+ bitval = SSPA_CTL_16_BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S24_3LE:
+ bits = 24;
+ bitval = SSPA_CTL_24_BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ bits = 32;
+ bitval = SSPA_CTL_32_BITS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ sspa_ctrl &= ~SSPA_CTL_XPH;
+ if (dev->of_node || params_channels(params) == 2)
+ sspa_ctrl |= SSPA_CTL_XPH;
+
+ sspa_ctrl &= ~SSPA_CTL_XWDLEN1_MASK;
+ sspa_ctrl |= SSPA_CTL_XWDLEN1(bitval);
+
+ sspa_ctrl &= ~SSPA_CTL_XWDLEN2_MASK;
+ sspa_ctrl |= SSPA_CTL_XWDLEN2(bitval);
+
+ sspa_ctrl &= ~SSPA_CTL_XSSZ1_MASK;
+ sspa_ctrl |= SSPA_CTL_XSSZ1(bitval);
+
+ sspa_ctrl &= ~SSPA_CTL_XSSZ2_MASK;
+ sspa_ctrl |= SSPA_CTL_XSSZ2(bitval);
+
+ sspa->sp &= ~SSPA_SP_FWID_MASK;
+ sspa->sp |= SSPA_SP_FWID(bits - 1);
+
+ sspa->sp &= ~SSPA_TXSP_FPER_MASK;
+ sspa->sp |= SSPA_TXSP_FPER(bits * 2 - 1);
+
+ if (dev->of_node) {
+ clk_set_rate(sspa->clk, params_rate(params) *
+ params_channels(params) * bits);
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ __raw_writel(sspa_ctrl, sspa->tx_base + SSPA_CTL);
+ __raw_writel(0x1, sspa->tx_base + SSPA_FIFO_UL);
+ } else {
+ __raw_writel(sspa_ctrl, sspa->rx_base + SSPA_CTL);
+ __raw_writel(0x0, sspa->rx_base + SSPA_FIFO_UL);
+ }
+
+ return 0;
+}
+
+static int mmp_sspa_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
+ int ret = 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ /*
+ * whatever playback or capture, must enable rx.
+ * this is a hw issue, so need check if rx has been
+ * enabled or not; if has been enabled by another
+ * stream, do not enable again.
+ */
+ if (!sspa->running_cnt)
+ mmp_sspa_rx_enable(sspa);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ mmp_sspa_tx_enable(sspa);
+
+ sspa->running_cnt++;
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ sspa->running_cnt--;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ mmp_sspa_tx_disable(sspa);
+
+ /* have no capture stream, disable rx port */
+ if (!sspa->running_cnt)
+ mmp_sspa_rx_disable(sspa);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int mmp_sspa_probe(struct snd_soc_dai *dai)
+{
+ struct sspa_priv *sspa = dev_get_drvdata(dai->dev);
+
+ snd_soc_dai_init_dma_data(dai,
+ &sspa->playback_dma_data,
+ &sspa->capture_dma_data);
+
+ return 0;
+}
+
+#define MMP_SSPA_RATES SNDRV_PCM_RATE_8000_192000
+#define MMP_SSPA_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
+ SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+static const struct snd_soc_dai_ops mmp_sspa_dai_ops = {
+ .probe = mmp_sspa_probe,
+ .startup = mmp_sspa_startup,
+ .shutdown = mmp_sspa_shutdown,
+ .trigger = mmp_sspa_trigger,
+ .hw_params = mmp_sspa_hw_params,
+ .set_sysclk = mmp_sspa_set_dai_sysclk,
+ .set_pll = mmp_sspa_set_dai_pll,
+ .set_fmt = mmp_sspa_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver mmp_sspa_dai = {
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 128,
+ .rates = MMP_SSPA_RATES,
+ .formats = MMP_SSPA_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = MMP_SSPA_RATES,
+ .formats = MMP_SSPA_FORMATS,
+ },
+ .ops = &mmp_sspa_dai_ops,
+};
+
+#define MMP_PCM_INFO (SNDRV_PCM_INFO_MMAP | \
+ SNDRV_PCM_INFO_MMAP_VALID | \
+ SNDRV_PCM_INFO_INTERLEAVED | \
+ SNDRV_PCM_INFO_PAUSE | \
+ SNDRV_PCM_INFO_RESUME | \
+ SNDRV_PCM_INFO_NO_PERIOD_WAKEUP)
+
+static const struct snd_pcm_hardware mmp_pcm_hardware[] = {
+ {
+ .info = MMP_PCM_INFO,
+ .period_bytes_min = 1024,
+ .period_bytes_max = 2048,
+ .periods_min = 2,
+ .periods_max = 32,
+ .buffer_bytes_max = 4096,
+ .fifo_size = 32,
+ },
+ {
+ .info = MMP_PCM_INFO,
+ .period_bytes_min = 1024,
+ .period_bytes_max = 2048,
+ .periods_min = 2,
+ .periods_max = 32,
+ .buffer_bytes_max = 4096,
+ .fifo_size = 32,
+ },
+};
+
+static const struct snd_dmaengine_pcm_config mmp_pcm_config = {
+ .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
+ .pcm_hardware = mmp_pcm_hardware,
+ .prealloc_buffer_size = 4096,
+};
+
+static int mmp_pcm_mmap(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ vm_flags_set(vma, VM_DONTEXPAND | VM_DONTDUMP);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ return remap_pfn_range(vma, vma->vm_start,
+ substream->dma_buffer.addr >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start, vma->vm_page_prot);
+}
+
+static int mmp_sspa_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct sspa_priv *sspa = snd_soc_component_get_drvdata(component);
+
+ pm_runtime_get_sync(component->dev);
+
+ /* we can only change the settings if the port is not in use */
+ if ((__raw_readl(sspa->tx_base + SSPA_SP) & SSPA_SP_S_EN) ||
+ (__raw_readl(sspa->rx_base + SSPA_SP) & SSPA_SP_S_EN)) {
+ dev_err(component->dev,
+ "can't change hardware dai format: stream is in use\n");
+ return -EBUSY;
+ }
+
+ __raw_writel(sspa->sp, sspa->tx_base + SSPA_SP);
+ __raw_writel(sspa->sp, sspa->rx_base + SSPA_SP);
+
+ sspa->sp &= ~(SSPA_SP_S_RST | SSPA_SP_FFLUSH);
+ __raw_writel(sspa->sp, sspa->tx_base + SSPA_SP);
+ __raw_writel(sspa->sp, sspa->rx_base + SSPA_SP);
+
+ /*
+ * FIXME: hw issue, for the tx serial port,
+ * can not config the master/slave mode;
+ * so must clean this bit.
+ * The master/slave mode has been set in the
+ * rx port.
+ */
+ __raw_writel(sspa->sp & ~SSPA_SP_MSL, sspa->tx_base + SSPA_SP);
+
+ __raw_writel(sspa->ctrl, sspa->tx_base + SSPA_CTL);
+ __raw_writel(sspa->ctrl, sspa->rx_base + SSPA_CTL);
+
+ return 0;
+}
+
+static int mmp_sspa_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ pm_runtime_put_sync(component->dev);
+ return 0;
+}
+
+static const struct snd_soc_component_driver mmp_sspa_component = {
+ .name = "mmp-sspa",
+ .mmap = mmp_pcm_mmap,
+ .open = mmp_sspa_open,
+ .close = mmp_sspa_close,
+ .legacy_dai_naming = 1,
+};
+
+static int asoc_mmp_sspa_probe(struct platform_device *pdev)
+{
+ struct sspa_priv *sspa;
+ int ret;
+
+ sspa = devm_kzalloc(&pdev->dev,
+ sizeof(struct sspa_priv), GFP_KERNEL);
+ if (!sspa)
+ return -ENOMEM;
+
+ if (pdev->dev.of_node) {
+ sspa->rx_base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(sspa->rx_base))
+ return PTR_ERR(sspa->rx_base);
+
+ sspa->tx_base = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(sspa->tx_base))
+ return PTR_ERR(sspa->tx_base);
+
+ sspa->clk = devm_clk_get(&pdev->dev, "bitclk");
+ if (IS_ERR(sspa->clk))
+ return PTR_ERR(sspa->clk);
+
+ sspa->audio_clk = devm_clk_get(&pdev->dev, "audio");
+ if (IS_ERR(sspa->audio_clk))
+ return PTR_ERR(sspa->audio_clk);
+ } else {
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL)
+ return -ENODEV;
+
+ sspa->rx_base = devm_ioremap(&pdev->dev, res->start, 0x30);
+ if (!sspa->rx_base)
+ return -ENOMEM;
+
+ sspa->tx_base = devm_ioremap(&pdev->dev,
+ res->start + 0x80, 0x30);
+ if (!sspa->tx_base)
+ return -ENOMEM;
+
+ sspa->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(sspa->clk))
+ return PTR_ERR(sspa->clk);
+
+ sspa->audio_clk = clk_get(NULL, "mmp-audio");
+ if (IS_ERR(sspa->audio_clk))
+ return PTR_ERR(sspa->audio_clk);
+
+ sspa->sysclk = clk_get(NULL, "mmp-sysclk");
+ if (IS_ERR(sspa->sysclk)) {
+ clk_put(sspa->audio_clk);
+ return PTR_ERR(sspa->sysclk);
+ }
+ }
+ platform_set_drvdata(pdev, sspa);
+
+ sspa->playback_dma_data.maxburst = 4;
+ sspa->capture_dma_data.maxburst = 4;
+ /* You know, these addresses are actually ignored. */
+ sspa->capture_dma_data.addr = SSPA_D;
+ sspa->playback_dma_data.addr = 0x80 + SSPA_D;
+
+ if (pdev->dev.of_node) {
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev,
+ &mmp_pcm_config, 0);
+ if (ret)
+ return ret;
+ }
+
+ ret = devm_snd_soc_register_component(&pdev->dev, &mmp_sspa_component,
+ &mmp_sspa_dai, 1);
+ if (ret)
+ return ret;
+
+ pm_runtime_enable(&pdev->dev);
+ clk_prepare_enable(sspa->audio_clk);
+
+ return 0;
+}
+
+static void asoc_mmp_sspa_remove(struct platform_device *pdev)
+{
+ struct sspa_priv *sspa = platform_get_drvdata(pdev);
+
+ clk_disable_unprepare(sspa->audio_clk);
+ pm_runtime_disable(&pdev->dev);
+
+ if (pdev->dev.of_node)
+ return;
+
+ clk_put(sspa->audio_clk);
+ clk_put(sspa->sysclk);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id mmp_sspa_of_match[] = {
+ { .compatible = "marvell,mmp-sspa" },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, mmp_sspa_of_match);
+#endif
+
+static struct platform_driver asoc_mmp_sspa_driver = {
+ .driver = {
+ .name = "mmp-sspa-dai",
+ .of_match_table = of_match_ptr(mmp_sspa_of_match),
+ },
+ .probe = asoc_mmp_sspa_probe,
+ .remove_new = asoc_mmp_sspa_remove,
+};
+
+module_platform_driver(asoc_mmp_sspa_driver);
+
+MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
+MODULE_DESCRIPTION("MMP SSPA SoC Interface");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mmp-sspa-dai");