Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 435 insertions, 0 deletions

diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
new file mode 100644
index 0000000000..9c88e99e37
--- /dev/null
+++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
@@ -0,0 +1,435 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for audio on multifunction CS5535 companion device
+ * Copyright (C) Jaya Kumar
+ *
+ * Based on Jaroslav Kysela and Takashi Iwai's examples.
+ * This work was sponsored by CIS(M) Sdn Bhd.
+ *
+ * todo: add be fmt support, spdif, pm
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <sound/asoundef.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/ac97_codec.h>
+#include "cs5535audio.h"
+
+static const struct snd_pcm_hardware snd_cs5535audio_playback =
+{
+	.info =			(
+				SNDRV_PCM_INFO_MMAP |
+				SNDRV_PCM_INFO_INTERLEAVED |
+		 		SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		 		SNDRV_PCM_INFO_MMAP_VALID |
+		 		SNDRV_PCM_INFO_PAUSE |
+				SNDRV_PCM_INFO_RESUME
+				),
+	.formats =		(
+				SNDRV_PCM_FMTBIT_S16_LE
+				),
+	.rates =		(
+				SNDRV_PCM_RATE_CONTINUOUS |
+				SNDRV_PCM_RATE_8000_48000
+				),
+	.rate_min =		4000,
+	.rate_max =		48000,
+	.channels_min =		2,
+	.channels_max =		2,
+	.buffer_bytes_max =	(128*1024),
+	.period_bytes_min =	64,
+	.period_bytes_max =	(64*1024 - 16),
+	.periods_min =		1,
+	.periods_max =		CS5535AUDIO_MAX_DESCRIPTORS,
+	.fifo_size =		0,
+};
+
+static const struct snd_pcm_hardware snd_cs5535audio_capture =
+{
+	.info =			(
+				SNDRV_PCM_INFO_MMAP |
+				SNDRV_PCM_INFO_INTERLEAVED |
+		 		SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		 		SNDRV_PCM_INFO_MMAP_VALID
+				),
+	.formats =		(
+				SNDRV_PCM_FMTBIT_S16_LE
+				),
+	.rates =		(
+				SNDRV_PCM_RATE_CONTINUOUS |
+				SNDRV_PCM_RATE_8000_48000
+				),
+	.rate_min =		4000,
+	.rate_max =		48000,
+	.channels_min =		2,
+	.channels_max =		2,
+	.buffer_bytes_max =	(128*1024),
+	.period_bytes_min =	64,
+	.period_bytes_max =	(64*1024 - 16),
+	.periods_min =		1,
+	.periods_max =		CS5535AUDIO_MAX_DESCRIPTORS,
+	.fifo_size =		0,
+};
+
+static int snd_cs5535audio_playback_open(struct snd_pcm_substream *substream)
+{
+	int err;
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	runtime->hw = snd_cs5535audio_playback;
+	runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_FRONT_DAC];
+	snd_pcm_limit_hw_rates(runtime);
+	cs5535au->playback_substream = substream;
+	runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]);
+	err = snd_pcm_hw_constraint_integer(runtime,
+					    SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int snd_cs5535audio_playback_close(struct snd_pcm_substream *substream)
+{
+	return 0;
+}
+
+#define CS5535AUDIO_DESC_LIST_SIZE \
+	PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(struct cs5535audio_dma_desc))
+
+static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au,
+					 struct cs5535audio_dma *dma,
+					 struct snd_pcm_substream *substream,
+					 unsigned int periods,
+					 unsigned int period_bytes)
+{
+	unsigned int i;
+	u32 addr, jmpprd_addr;
+	struct cs5535audio_dma_desc *lastdesc;
+
+	if (periods > CS5535AUDIO_MAX_DESCRIPTORS)
+		return -ENOMEM;
+
+	if (dma->desc_buf.area == NULL) {
+		if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
+					&cs5535au->pci->dev,
+					CS5535AUDIO_DESC_LIST_SIZE+1,
+					&dma->desc_buf) < 0)
+			return -ENOMEM;
+		dma->period_bytes = dma->periods = 0;
+	}
+
+	if (dma->periods == periods && dma->period_bytes == period_bytes)
+		return 0;
+
+	/* the u32 cast is okay because in snd*create we successfully told
+	   pci alloc that we're only 32 bit capable so the upper will be 0 */
+	addr = (u32) substream->runtime->dma_addr;
+	for (i = 0; i < periods; i++) {
+		struct cs5535audio_dma_desc *desc =
+			&((struct cs5535audio_dma_desc *) dma->desc_buf.area)[i];
+		desc->addr = cpu_to_le32(addr);
+		desc->size = cpu_to_le16(period_bytes);
+		desc->ctlreserved = cpu_to_le16(PRD_EOP);
+		addr += period_bytes;
+	}
+	/* we reserved one dummy descriptor at the end to do the PRD jump */
+	lastdesc = &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[periods];
+	lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
+	lastdesc->size = 0;
+	lastdesc->ctlreserved = cpu_to_le16(PRD_JMP);
+	jmpprd_addr = (u32)dma->desc_buf.addr +
+		sizeof(struct cs5535audio_dma_desc) * periods;
+
+	dma->substream = substream;
+	dma->period_bytes = period_bytes;
+	dma->periods = periods;
+	spin_lock_irq(&cs5535au->reg_lock);
+	dma->ops->disable_dma(cs5535au);
+	dma->ops->setup_prd(cs5535au, jmpprd_addr);
+	spin_unlock_irq(&cs5535au->reg_lock);
+	return 0;
+}
+
+static void cs5535audio_playback_enable_dma(struct cs5535audio *cs5535au)
+{
+	cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN);
+}
+
+static void cs5535audio_playback_disable_dma(struct cs5535audio *cs5535au)
+{
+	cs_writeb(cs5535au, ACC_BM0_CMD, 0);
+}
+
+static void cs5535audio_playback_pause_dma(struct cs5535audio *cs5535au)
+{
+	cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE);
+}
+
+static void cs5535audio_playback_setup_prd(struct cs5535audio *cs5535au,
+					   u32 prd_addr)
+{
+	cs_writel(cs5535au, ACC_BM0_PRD, prd_addr);
+}
+
+static u32 cs5535audio_playback_read_prd(struct cs5535audio *cs5535au)
+{
+	return cs_readl(cs5535au, ACC_BM0_PRD);
+}
+
+static u32 cs5535audio_playback_read_dma_pntr(struct cs5535audio *cs5535au)
+{
+	return cs_readl(cs5535au, ACC_BM0_PNTR);
+}
+
+static void cs5535audio_capture_enable_dma(struct cs5535audio *cs5535au)
+{
+	cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN);
+}
+
+static void cs5535audio_capture_disable_dma(struct cs5535audio *cs5535au)
+{
+	cs_writeb(cs5535au, ACC_BM1_CMD, 0);
+}
+
+static void cs5535audio_capture_pause_dma(struct cs5535audio *cs5535au)
+{
+	cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE);
+}
+
+static void cs5535audio_capture_setup_prd(struct cs5535audio *cs5535au,
+					  u32 prd_addr)
+{
+	cs_writel(cs5535au, ACC_BM1_PRD, prd_addr);
+}
+
+static u32 cs5535audio_capture_read_prd(struct cs5535audio *cs5535au)
+{
+	return cs_readl(cs5535au, ACC_BM1_PRD);
+}
+
+static u32 cs5535audio_capture_read_dma_pntr(struct cs5535audio *cs5535au)
+{
+	return cs_readl(cs5535au, ACC_BM1_PNTR);
+}
+
+static void cs5535audio_clear_dma_packets(struct cs5535audio *cs5535au,
+					  struct cs5535audio_dma *dma,
+					  struct snd_pcm_substream *substream)
+{
+	snd_dma_free_pages(&dma->desc_buf);
+	dma->desc_buf.area = NULL;
+	dma->substream = NULL;
+}
+
+static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream,
+				     struct snd_pcm_hw_params *hw_params)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	struct cs5535audio_dma *dma = substream->runtime->private_data;
+	int err;
+
+	dma->buf_addr = substream->runtime->dma_addr;
+	dma->buf_bytes = params_buffer_bytes(hw_params);
+
+	err = cs5535audio_build_dma_packets(cs5535au, dma, substream,
+					    params_periods(hw_params),
+					    params_period_bytes(hw_params));
+	if (!err)
+		dma->pcm_open_flag = 1;
+
+	return err;
+}
+
+static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	struct cs5535audio_dma *dma = substream->runtime->private_data;
+
+	if (dma->pcm_open_flag) {
+		if (substream == cs5535au->playback_substream)
+			snd_ac97_update_power(cs5535au->ac97,
+					AC97_PCM_FRONT_DAC_RATE, 0);
+		else
+			snd_ac97_update_power(cs5535au->ac97,
+					AC97_PCM_LR_ADC_RATE, 0);
+		dma->pcm_open_flag = 0;
+	}
+	cs5535audio_clear_dma_packets(cs5535au, dma, substream);
+	return 0;
+}
+
+static int snd_cs5535audio_playback_prepare(struct snd_pcm_substream *substream)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE,
+				 substream->runtime->rate);
+}
+
+static int snd_cs5535audio_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	struct cs5535audio_dma *dma = substream->runtime->private_data;
+	int err = 0;
+
+	spin_lock(&cs5535au->reg_lock);
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		dma->ops->pause_dma(cs5535au);
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		dma->ops->enable_dma(cs5535au);
+		break;
+	case SNDRV_PCM_TRIGGER_START:
+		dma->ops->enable_dma(cs5535au);
+		break;
+	case SNDRV_PCM_TRIGGER_RESUME:
+		dma->ops->enable_dma(cs5535au);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		dma->ops->disable_dma(cs5535au);
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		dma->ops->disable_dma(cs5535au);
+		break;
+	default:
+		dev_err(cs5535au->card->dev, "unhandled trigger\n");
+		err = -EINVAL;
+		break;
+	}
+	spin_unlock(&cs5535au->reg_lock);
+	return err;
+}
+
+static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(struct snd_pcm_substream
+							*substream)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	u32 curdma;
+	struct cs5535audio_dma *dma;
+
+	dma = substream->runtime->private_data;
+	curdma = dma->ops->read_dma_pntr(cs5535au);
+	if (curdma < dma->buf_addr) {
+		dev_err(cs5535au->card->dev, "curdma=%x < %x bufaddr.\n",
+					curdma, dma->buf_addr);
+		return 0;
+	}
+	curdma -= dma->buf_addr;
+	if (curdma >= dma->buf_bytes) {
+		dev_err(cs5535au->card->dev, "diff=%x >= %x buf_bytes.\n",
+					curdma, dma->buf_bytes);
+		return 0;
+	}
+	return bytes_to_frames(substream->runtime, curdma);
+}
+
+static int snd_cs5535audio_capture_open(struct snd_pcm_substream *substream)
+{
+	int err;
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	runtime->hw = snd_cs5535audio_capture;
+	runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_ADC];
+	snd_pcm_limit_hw_rates(runtime);
+	cs5535au->capture_substream = substream;
+	runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]);
+	err = snd_pcm_hw_constraint_integer(runtime,
+					    SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		return err;
+	olpc_capture_open(cs5535au->ac97);
+	return 0;
+}
+
+static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	olpc_capture_close(cs5535au->ac97);
+	return 0;
+}
+
+static int snd_cs5535audio_capture_prepare(struct snd_pcm_substream *substream)
+{
+	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
+	return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE,
+				 substream->runtime->rate);
+}
+
+static const struct snd_pcm_ops snd_cs5535audio_playback_ops = {
+	.open =		snd_cs5535audio_playback_open,
+	.close =	snd_cs5535audio_playback_close,
+	.hw_params =	snd_cs5535audio_hw_params,
+	.hw_free =	snd_cs5535audio_hw_free,
+	.prepare =	snd_cs5535audio_playback_prepare,
+	.trigger =	snd_cs5535audio_trigger,
+	.pointer =	snd_cs5535audio_pcm_pointer,
+};
+
+static const struct snd_pcm_ops snd_cs5535audio_capture_ops = {
+	.open =		snd_cs5535audio_capture_open,
+	.close =	snd_cs5535audio_capture_close,
+	.hw_params =	snd_cs5535audio_hw_params,
+	.hw_free =	snd_cs5535audio_hw_free,
+	.prepare =	snd_cs5535audio_capture_prepare,
+	.trigger =	snd_cs5535audio_trigger,
+	.pointer =	snd_cs5535audio_pcm_pointer,
+};
+
+static const struct cs5535audio_dma_ops snd_cs5535audio_playback_dma_ops = {
+        .type = CS5535AUDIO_DMA_PLAYBACK,
+        .enable_dma = cs5535audio_playback_enable_dma,
+        .disable_dma = cs5535audio_playback_disable_dma,
+        .setup_prd = cs5535audio_playback_setup_prd,
+        .read_prd = cs5535audio_playback_read_prd,
+        .pause_dma = cs5535audio_playback_pause_dma,
+        .read_dma_pntr = cs5535audio_playback_read_dma_pntr,
+};
+
+static const struct cs5535audio_dma_ops snd_cs5535audio_capture_dma_ops = {
+        .type = CS5535AUDIO_DMA_CAPTURE,
+        .enable_dma = cs5535audio_capture_enable_dma,
+        .disable_dma = cs5535audio_capture_disable_dma,
+        .setup_prd = cs5535audio_capture_setup_prd,
+        .read_prd = cs5535audio_capture_read_prd,
+        .pause_dma = cs5535audio_capture_pause_dma,
+        .read_dma_pntr = cs5535audio_capture_read_dma_pntr,
+};
+
+int snd_cs5535audio_pcm(struct cs5535audio *cs5535au)
+{
+	struct snd_pcm *pcm;
+	int err;
+
+	err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm);
+	if (err < 0)
+		return err;
+
+	cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops =
+					&snd_cs5535audio_playback_dma_ops;
+	cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops =
+					&snd_cs5535audio_capture_dma_ops;
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+					&snd_cs5535audio_playback_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+					&snd_cs5535audio_capture_ops);
+
+	pcm->private_data = cs5535au;
+	pcm->info_flags = 0;
+	strcpy(pcm->name, "CS5535 Audio");
+
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+				       &cs5535au->pci->dev,
+				       64*1024, 128*1024);
+	cs5535au->pcm = pcm;
+
+	return 0;
+}
+