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-rw-r--r--sound/soc/qcom/lpass-apq8016.c309
1 files changed, 309 insertions, 0 deletions
diff --git a/sound/soc/qcom/lpass-apq8016.c b/sound/soc/qcom/lpass-apq8016.c
new file mode 100644
index 000000000..f919d46e1
--- /dev/null
+++ b/sound/soc/qcom/lpass-apq8016.c
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
+ *
+ * lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS
+ */
+
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#include <dt-bindings/sound/apq8016-lpass.h>
+#include "lpass-lpaif-reg.h"
+#include "lpass.h"
+
+static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = {
+ [MI2S_PRIMARY] = {
+ .id = MI2S_PRIMARY,
+ .name = "Primary MI2S",
+ .playback = {
+ .stream_name = "Primary Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .ops = &asoc_qcom_lpass_cpu_dai_ops,
+ },
+ [MI2S_SECONDARY] = {
+ .id = MI2S_SECONDARY,
+ .name = "Secondary MI2S",
+ .playback = {
+ .stream_name = "Secondary Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .ops = &asoc_qcom_lpass_cpu_dai_ops,
+ },
+ [MI2S_TERTIARY] = {
+ .id = MI2S_TERTIARY,
+ .name = "Tertiary MI2S",
+ .capture = {
+ .stream_name = "Tertiary Capture",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .ops = &asoc_qcom_lpass_cpu_dai_ops,
+ },
+ [MI2S_QUATERNARY] = {
+ .id = MI2S_QUATERNARY,
+ .name = "Quatenary MI2S",
+ .playback = {
+ .stream_name = "Quatenary Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .stream_name = "Quatenary Capture",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000 |
+ SNDRV_PCM_RATE_16000 |
+ SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .ops = &asoc_qcom_lpass_cpu_dai_ops,
+ },
+};
+
+static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
+ int direction, unsigned int dai_id)
+{
+ struct lpass_variant *v = drvdata->variant;
+ int chan = 0;
+
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
+ v->rdma_channels);
+
+ if (chan >= v->rdma_channels)
+ return -EBUSY;
+ } else {
+ chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
+ v->wrdma_channel_start +
+ v->wrdma_channels,
+ v->wrdma_channel_start);
+
+ if (chan >= v->wrdma_channel_start + v->wrdma_channels)
+ return -EBUSY;
+ }
+
+ set_bit(chan, &drvdata->dma_ch_bit_map);
+
+ return chan;
+}
+
+static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
+{
+ clear_bit(chan, &drvdata->dma_ch_bit_map);
+
+ return 0;
+}
+
+static int apq8016_lpass_init(struct platform_device *pdev)
+{
+ struct lpass_data *drvdata = platform_get_drvdata(pdev);
+ struct lpass_variant *variant = drvdata->variant;
+ struct device *dev = &pdev->dev;
+ int ret, i;
+
+
+ drvdata->clks = devm_kcalloc(dev, variant->num_clks,
+ sizeof(*drvdata->clks), GFP_KERNEL);
+ if (!drvdata->clks)
+ return -ENOMEM;
+ drvdata->num_clks = variant->num_clks;
+
+ for (i = 0; i < drvdata->num_clks; i++)
+ drvdata->clks[i].id = variant->clk_name[i];
+
+ ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
+ if (ret) {
+ dev_err(dev, "Failed to get clocks %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
+ if (ret) {
+ dev_err(dev, "apq8016 clk_enable failed\n");
+ return ret;
+ }
+
+ drvdata->ahbix_clk = devm_clk_get(dev, "ahbix-clk");
+ if (IS_ERR(drvdata->ahbix_clk)) {
+ dev_err(dev, "error getting ahbix-clk: %ld\n",
+ PTR_ERR(drvdata->ahbix_clk));
+ ret = PTR_ERR(drvdata->ahbix_clk);
+ goto err_ahbix_clk;
+ }
+
+ ret = clk_set_rate(drvdata->ahbix_clk, LPASS_AHBIX_CLOCK_FREQUENCY);
+ if (ret) {
+ dev_err(dev, "error setting rate on ahbix_clk: %d\n", ret);
+ goto err_ahbix_clk;
+ }
+ dev_dbg(dev, "set ahbix_clk rate to %lu\n",
+ clk_get_rate(drvdata->ahbix_clk));
+
+ ret = clk_prepare_enable(drvdata->ahbix_clk);
+ if (ret) {
+ dev_err(dev, "error enabling ahbix_clk: %d\n", ret);
+ goto err_ahbix_clk;
+ }
+
+ return 0;
+
+err_ahbix_clk:
+ clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
+ return ret;
+}
+
+static int apq8016_lpass_exit(struct platform_device *pdev)
+{
+ struct lpass_data *drvdata = platform_get_drvdata(pdev);
+
+ clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
+ clk_disable_unprepare(drvdata->ahbix_clk);
+
+ return 0;
+}
+
+
+static struct lpass_variant apq8016_data = {
+ .i2sctrl_reg_base = 0x1000,
+ .i2sctrl_reg_stride = 0x1000,
+ .i2s_ports = 4,
+ .irq_reg_base = 0x6000,
+ .irq_reg_stride = 0x1000,
+ .irq_ports = 3,
+ .rdma_reg_base = 0x8400,
+ .rdma_reg_stride = 0x1000,
+ .rdma_channels = 2,
+ .dmactl_audif_start = 1,
+ .wrdma_reg_base = 0xB000,
+ .wrdma_reg_stride = 0x1000,
+ .wrdma_channel_start = 5,
+ .wrdma_channels = 2,
+ .loopback = REG_FIELD_ID(0x1000, 15, 15, 4, 0x1000),
+ .spken = REG_FIELD_ID(0x1000, 14, 14, 4, 0x1000),
+ .spkmode = REG_FIELD_ID(0x1000, 10, 13, 4, 0x1000),
+ .spkmono = REG_FIELD_ID(0x1000, 9, 9, 4, 0x1000),
+ .micen = REG_FIELD_ID(0x1000, 8, 8, 4, 0x1000),
+ .micmode = REG_FIELD_ID(0x1000, 4, 7, 4, 0x1000),
+ .micmono = REG_FIELD_ID(0x1000, 3, 3, 4, 0x1000),
+ .wssrc = REG_FIELD_ID(0x1000, 2, 2, 4, 0x1000),
+ .bitwidth = REG_FIELD_ID(0x1000, 0, 1, 4, 0x1000),
+
+ .rdma_dyncclk = REG_FIELD_ID(0x8400, 12, 12, 2, 0x1000),
+ .rdma_bursten = REG_FIELD_ID(0x8400, 11, 11, 2, 0x1000),
+ .rdma_wpscnt = REG_FIELD_ID(0x8400, 8, 10, 2, 0x1000),
+ .rdma_intf = REG_FIELD_ID(0x8400, 4, 7, 2, 0x1000),
+ .rdma_fifowm = REG_FIELD_ID(0x8400, 1, 3, 2, 0x1000),
+ .rdma_enable = REG_FIELD_ID(0x8400, 0, 0, 2, 0x1000),
+
+ .wrdma_dyncclk = REG_FIELD_ID(0xB000, 12, 12, 2, 0x1000),
+ .wrdma_bursten = REG_FIELD_ID(0xB000, 11, 11, 2, 0x1000),
+ .wrdma_wpscnt = REG_FIELD_ID(0xB000, 8, 10, 2, 0x1000),
+ .wrdma_intf = REG_FIELD_ID(0xB000, 4, 7, 2, 0x1000),
+ .wrdma_fifowm = REG_FIELD_ID(0xB000, 1, 3, 2, 0x1000),
+ .wrdma_enable = REG_FIELD_ID(0xB000, 0, 0, 2, 0x1000),
+
+ .clk_name = (const char*[]) {
+ "pcnoc-mport-clk",
+ "pcnoc-sway-clk",
+ },
+ .num_clks = 2,
+ .dai_driver = apq8016_lpass_cpu_dai_driver,
+ .num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver),
+ .dai_osr_clk_names = (const char *[]) {
+ "mi2s-osr-clk0",
+ "mi2s-osr-clk1",
+ "mi2s-osr-clk2",
+ "mi2s-osr-clk3",
+ },
+ .dai_bit_clk_names = (const char *[]) {
+ "mi2s-bit-clk0",
+ "mi2s-bit-clk1",
+ "mi2s-bit-clk2",
+ "mi2s-bit-clk3",
+ },
+ .init = apq8016_lpass_init,
+ .exit = apq8016_lpass_exit,
+ .alloc_dma_channel = apq8016_lpass_alloc_dma_channel,
+ .free_dma_channel = apq8016_lpass_free_dma_channel,
+};
+
+static const struct of_device_id apq8016_lpass_cpu_device_id[] __maybe_unused = {
+ { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data },
+ { .compatible = "qcom,apq8016-lpass-cpu", .data = &apq8016_data },
+ {}
+};
+MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id);
+
+static struct platform_driver apq8016_lpass_cpu_platform_driver = {
+ .driver = {
+ .name = "apq8016-lpass-cpu",
+ .of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id),
+ },
+ .probe = asoc_qcom_lpass_cpu_platform_probe,
+ .remove = asoc_qcom_lpass_cpu_platform_remove,
+};
+module_platform_driver(apq8016_lpass_cpu_platform_driver);
+
+MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver");
+MODULE_LICENSE("GPL v2");
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 23:01:01 +0000