Add platform driver for configuring sc7280 lpass core I2S and
DMA configuration to support playback & capture to external codecs
connected over secondary MI2S interface and soundwire interface.
Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@xxxxxxxxxxx>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@xxxxxxxxxxx>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@xxxxxxxxxxx>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
sound/soc/qcom/lpass-sc7280.c | 447 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 447 insertions(+)
create mode 100644 sound/soc/qcom/lpass-sc7280.c
diff --git a/sound/soc/qcom/lpass-sc7280.c b/sound/soc/qcom/lpass-sc7280.c
new file mode 100644
index 0000000..61a445c
--- /dev/null
+++ b/sound/soc/qcom/lpass-sc7280.c
@@ -0,0 +1,447 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+ *
+ * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
+ */
+
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <linux/pm_runtime.h>
+
+#include <dt-bindings/sound/sc7180-lpass.h>
+
+#include "lpass-lpaif-reg.h"
+#include "lpass.h"
+
+static struct snd_soc_dai_driver sc7280_lpass_cpu_dai_driver[] = {
+ {
+ .id = MI2S_PRIMARY,
+ .name = "Primary MI2S",
+ .playback = {
+ .stream_name = "Primary Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+ .capture = {
+ .stream_name = "Primary Capture",
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+ .probe = &asoc_qcom_lpass_cpu_dai_probe,
+ .ops = &asoc_qcom_lpass_cpu_dai_ops,
+ }, {
+ .id = MI2S_SECONDARY,
+ .name = "Secondary MI2S",
+ .playback = {
+ .stream_name = "Secondary MI2S Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+ .probe = &asoc_qcom_lpass_cpu_dai_probe,
+ .ops = &asoc_qcom_lpass_cpu_dai_ops,
+ }, {
+ .id = LPASS_DP_RX,
+ .name = "Hdmi",
+ .playback = {
+ .stream_name = "DP Playback",
+ .formats = SNDRV_PCM_FMTBIT_S24,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+ .ops = &asoc_qcom_lpass_hdmi_dai_ops,
+ }, {
+ .id = LPASS_CDC_DMA_RX0,
+ .name = "CDC DMA RX",
+ .playback = {
+ .stream_name = "WCD Playback",
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+ .ops = &asoc_qcom_lpass_cdc_dma_dai_ops,
+ }, {
+ .id = LPASS_CDC_DMA_TX3,
+ .name = "CDC DMA TX",
+ .capture = {
+ .stream_name = "WCD Capture",
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 1,
+ },
+ .ops = &asoc_qcom_lpass_cdc_dma_dai_ops,
+ }, {
+ .id = LPASS_CDC_DMA_VA_TX0,
+ .name = "CDC DMA VA",
+ .capture = {
+ .stream_name = "DMIC Capture",
+ .formats = SNDRV_PCM_FMTBIT_S16,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 4,
+ },
+ .ops = &asoc_qcom_lpass_cdc_dma_dai_ops,
+ },
+};
+
+static int sc7280_lpass_alloc_dma_channel(struct lpass_data *drvdata,
+ int direction, unsigned int dai_id)
+{
+ struct lpass_variant *v = drvdata->variant;
+ int chan = 0;
+
+ switch (dai_id) {
+ case MI2S_PRIMARY ... MI2S_QUINARY:
+ 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);
+ break;
+ case LPASS_DP_RX:
+ chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
+ v->hdmi_rdma_channels);
+ if (chan >= v->hdmi_rdma_channels)
+ return -EBUSY;
+ set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
+ break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ chan = find_first_zero_bit(&drvdata->rxtx_dma_ch_bit_map,
+ v->rxtx_rdma_channels);
+ if (chan >= v->rxtx_rdma_channels)
+ return -EBUSY;
+ break;
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ chan = find_next_zero_bit(&drvdata->rxtx_dma_ch_bit_map,
+ v->rxtx_wrdma_channel_start +
+ v->rxtx_wrdma_channels,
+ v->rxtx_wrdma_channel_start);
+ if (chan >= v->rxtx_wrdma_channel_start + v->rxtx_wrdma_channels)
+ return -EBUSY;
+ set_bit(chan, &drvdata->rxtx_dma_ch_bit_map);
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ chan = find_next_zero_bit(&drvdata->va_dma_ch_bit_map,
+ v->va_wrdma_channel_start +
+ v->va_wrdma_channels,
+ v->va_wrdma_channel_start);
+ if (chan >= v->va_wrdma_channel_start + v->va_wrdma_channels)
+ return -EBUSY;
+ set_bit(chan, &drvdata->va_dma_ch_bit_map);
+ break;
+ default:
+ break;
+ }
+
+ return chan;
+}
+
+static int sc7280_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
+{
+ switch (dai_id) {
+ case MI2S_PRIMARY ... MI2S_QUINARY:
+ clear_bit(chan, &drvdata->dma_ch_bit_map);
+ break;
+ case LPASS_DP_RX:
+ clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
+ break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ clear_bit(chan, &drvdata->rxtx_dma_ch_bit_map);
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ clear_bit(chan, &drvdata->va_dma_ch_bit_map);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int sc7280_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, "sc7280 clk_enable failed\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sc7280_lpass_exit(struct platform_device *pdev)
+{
+ struct lpass_data *drvdata = platform_get_drvdata(pdev);
+
+ clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
+
+ return 0;
+}
+
+static struct lpass_variant sc7280_data = {
+ .i2sctrl_reg_base = 0x1000,
+ .i2sctrl_reg_stride = 0x1000,
+ .i2s_ports = 3,
+ .irq_reg_base = 0x9000,
+ .irq_reg_stride = 0x1000,
+ .irq_ports = 3,
+ .rdma_reg_base = 0xC000,
+ .rdma_reg_stride = 0x1000,
+ .rdma_channels = 5,
+ .rxtx_rdma_reg_base = 0xC000,
+ .rxtx_rdma_reg_stride = 0x1000,
+ .rxtx_rdma_channels = 8,
+ .hdmi_rdma_reg_base = 0x64000,
+ .hdmi_rdma_reg_stride = 0x1000,
+ .hdmi_rdma_channels = 4,
+ .dmactl_audif_start = 1,
+ .wrdma_reg_base = 0x18000,
+ .wrdma_reg_stride = 0x1000,
+ .wrdma_channel_start = 5,
+ .wrdma_channels = 4,
+ .rxtx_irq_reg_base = 0x9000,
+ .rxtx_irq_reg_stride = 0x1000,
+ .rxtx_irq_ports = 3,
+ .rxtx_wrdma_reg_base = 0x18000,
+ .rxtx_wrdma_reg_stride = 0x1000,
+ .rxtx_wrdma_channel_start = 5,
+ .rxtx_wrdma_channels = 6,
+ .va_wrdma_reg_base = 0x18000,
+ .va_wrdma_reg_stride = 0x1000,
+ .va_wrdma_channel_start = 5,
+ .va_wrdma_channels = 3,
+ .va_irq_reg_base = 0x9000,
+ .va_irq_reg_stride = 0x1000,
+ .va_irq_ports = 3,
+
+ .loopback = REG_FIELD_ID(0x1000, 17, 17, 3, 0x1000),
+ .spken = REG_FIELD_ID(0x1000, 16, 16, 3, 0x1000),
+ .spkmode = REG_FIELD_ID(0x1000, 11, 15, 3, 0x1000),
+ .spkmono = REG_FIELD_ID(0x1000, 10, 10, 3, 0x1000),
+ .micen = REG_FIELD_ID(0x1000, 9, 9, 3, 0x1000),
+ .micmode = REG_FIELD_ID(0x1000, 4, 8, 3, 0x1000),
+ .micmono = REG_FIELD_ID(0x1000, 3, 3, 3, 0x1000),
+ .wssrc = REG_FIELD_ID(0x1000, 2, 2, 3, 0x1000),
+ .bitwidth = REG_FIELD_ID(0x1000, 0, 1, 3, 0x1000),
+
+ .rdma_dyncclk = REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
+ .rdma_bursten = REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
+ .rdma_wpscnt = REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
+ .rdma_intf = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
+ .rdma_fifowm = REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
+ .rdma_enable = REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),
+
+ .wrdma_dyncclk = REG_FIELD_ID(0x18000, 22, 22, 4, 0x1000),
+ .wrdma_bursten = REG_FIELD_ID(0x18000, 21, 21, 4, 0x1000),
+ .wrdma_wpscnt = REG_FIELD_ID(0x18000, 17, 20, 4, 0x1000),
+ .wrdma_intf = REG_FIELD_ID(0x18000, 12, 16, 4, 0x1000),
+ .wrdma_fifowm = REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
+ .wrdma_enable = REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),
+
+ .rxtx_rdma_enable = REG_FIELD_ID(0xC000, 0, 0, 7, 0x1000),
+ .rxtx_rdma_fifowm = REG_FIELD_ID(0xC000, 1, 11, 7, 0x1000),
+ .rxtx_rdma_intf = REG_FIELD_ID(0xC000, 12, 15, 7, 0x1000),
+ .rxtx_rdma_wpscnt = REG_FIELD_ID(0xC000, 16, 19, 7, 0x1000),
+ .rxtx_rdma_bursten = REG_FIELD_ID(0xC000, 20, 20, 7, 0x1000),
+ .rxtx_rdma_dyncclk = REG_FIELD_ID(0xC000, 21, 21, 7, 0x1000),
+
+ .rxtx_rdma_codec_ch = REG_FIELD_ID(0xC050, 0, 7, 7, 0x1000),
+ .rxtx_rdma_codec_intf = REG_FIELD_ID(0xC050, 16, 19, 7, 0x1000),
+ .rxtx_rdma_codec_fs_delay = REG_FIELD_ID(0xC050, 21, 24, 7, 0x1000),
+ .rxtx_rdma_codec_fs_sel = REG_FIELD_ID(0xC050, 25, 27, 7, 0x1000),
+ .rxtx_rdma_codec_pack = REG_FIELD_ID(0xC050, 29, 29, 5, 0x1000),
+ .rxtx_rdma_codec_enable = REG_FIELD_ID(0xC050, 30, 30, 7, 0x1000),
+
+ .rxtx_wrdma_enable = REG_FIELD_ID(0x18000, 0, 0, 5, 0x1000),
+ .rxtx_wrdma_fifowm = REG_FIELD_ID(0x18000, 1, 11, 5, 0x1000),
+ .rxtx_wrdma_intf = REG_FIELD_ID(0x18000, 12, 16, 5, 0x1000),
+ .rxtx_wrdma_wpscnt = REG_FIELD_ID(0x18000, 17, 20, 5, 0x1000),
+ .rxtx_wrdma_bursten = REG_FIELD_ID(0x18000, 21, 21, 5, 0x1000),
+ .rxtx_wrdma_dyncclk = REG_FIELD_ID(0x18000, 22, 22, 5, 0x1000),
+
+ .rxtx_wrdma_codec_ch = REG_FIELD_ID(0x18050, 0, 7, 5, 0x1000),
+ .rxtx_wrdma_codec_intf = REG_FIELD_ID(0x18050, 16, 19, 5, 0x1000),
+ .rxtx_wrdma_codec_fs_delay = REG_FIELD_ID(0x18050, 21, 24, 5, 0x1000),
+ .rxtx_wrdma_codec_fs_sel = REG_FIELD_ID(0x18050, 25, 27, 5, 0x1000),
+ .rxtx_wrdma_codec_pack = REG_FIELD_ID(0x18050, 29, 29, 5, 0x1000),
+ .rxtx_wrdma_codec_enable = REG_FIELD_ID(0x18050, 30, 30, 5, 0x1000),
+
+ .va_wrdma_enable = REG_FIELD_ID(0x18000, 0, 0, 5, 0x1000),
+ .va_wrdma_fifowm = REG_FIELD_ID(0x18000, 1, 11, 5, 0x1000),
+ .va_wrdma_intf = REG_FIELD_ID(0x18000, 12, 16, 5, 0x1000),
+ .va_wrdma_wpscnt = REG_FIELD_ID(0x18000, 17, 20, 5, 0x1000),
+ .va_wrdma_bursten = REG_FIELD_ID(0x18000, 21, 21, 5, 0x1000),
+ .va_wrdma_dyncclk = REG_FIELD_ID(0x18000, 22, 22, 5, 0x1000),
+
+ .va_wrdma_codec_ch = REG_FIELD_ID(0x18050, 0, 7, 5, 0x1000),
+ .va_wrdma_codec_intf = REG_FIELD_ID(0x18050, 16, 19, 5, 0x1000),
+ .va_wrdma_codec_fs_delay = REG_FIELD_ID(0x18050, 21, 24, 5, 0x1000),
+ .va_wrdma_codec_fs_sel = REG_FIELD_ID(0x18050, 25, 27, 5, 0x1000),
+ .va_wrdma_codec_pack = REG_FIELD_ID(0x18050, 29, 29, 5, 0x1000),
+ .va_wrdma_codec_enable = REG_FIELD_ID(0x18050, 30, 30, 5, 0x1000),
+
+ .hdmi_tx_ctl_addr = 0x1000,
+ .hdmi_legacy_addr = 0x1008,
+ .hdmi_vbit_addr = 0x610c0,
+ .hdmi_ch_lsb_addr = 0x61048,
+ .hdmi_ch_msb_addr = 0x6104c,
+ .ch_stride = 0x8,
+ .hdmi_parity_addr = 0x61034,
+ .hdmi_dmactl_addr = 0x61038,
+ .hdmi_dma_stride = 0x4,
+ .hdmi_DP_addr = 0x610c8,
+ .hdmi_sstream_addr = 0x6101c,
+ .hdmi_irq_reg_base = 0x63000,
+ .hdmi_irq_ports = 1,
+
+ .hdmi_rdma_dyncclk = REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
+ .hdmi_rdma_bursten = REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
+ .hdmi_rdma_burst8 = REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
+ .hdmi_rdma_burst16 = REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
+ .hdmi_rdma_dynburst = REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
+ .hdmi_rdma_wpscnt = REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
+ .hdmi_rdma_fifowm = REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
+ .hdmi_rdma_enable = REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),
+
+ .sstream_en = REG_FIELD(0x6101c, 0, 0),
+ .dma_sel = REG_FIELD(0x6101c, 1, 2),
+ .auto_bbit_en = REG_FIELD(0x6101c, 3, 3),
+ .layout = REG_FIELD(0x6101c, 4, 4),
+ .layout_sp = REG_FIELD(0x6101c, 5, 8),
+ .set_sp_on_en = REG_FIELD(0x6101c, 10, 10),
+ .dp_audio = REG_FIELD(0x6101c, 11, 11),
+ .dp_staffing_en = REG_FIELD(0x6101c, 12, 12),
+ .dp_sp_b_hw_en = REG_FIELD(0x6101c, 13, 13),
+
+ .mute = REG_FIELD(0x610c8, 0, 0),
+ .as_sdp_cc = REG_FIELD(0x610c8, 1, 3),
+ .as_sdp_ct = REG_FIELD(0x610c8, 4, 7),
+ .aif_db4 = REG_FIELD(0x610c8, 8, 15),
+ .frequency = REG_FIELD(0x610c8, 16, 21),
+ .mst_index = REG_FIELD(0x610c8, 28, 29),
+ .dptx_index = REG_FIELD(0x610c8, 30, 31),
+
+ .soft_reset = REG_FIELD(0x1000, 31, 31),
+ .force_reset = REG_FIELD(0x1000, 30, 30),
+
+ .use_hw_chs = REG_FIELD(0x61038, 0, 0),
+ .use_hw_usr = REG_FIELD(0x61038, 1, 1),
+ .hw_chs_sel = REG_FIELD(0x61038, 2, 4),
+ .hw_usr_sel = REG_FIELD(0x61038, 5, 6),
+
+ .replace_vbit = REG_FIELD(0x610c0, 0, 0),
+ .vbit_stream = REG_FIELD(0x610c0, 1, 1),
+
+ .legacy_en = REG_FIELD(0x1008, 0, 0),
+ .calc_en = REG_FIELD(0x61034, 0, 0),
+ .lsb_bits = REG_FIELD(0x61048, 0, 31),
+ .msb_bits = REG_FIELD(0x6104c, 0, 31),
+
+
+ .clk_name = (const char*[]) {
+ "core_cc_sysnoc_mport_core"
+ },
+ .num_clks = 1,
+ .cdc_dma_clk_names = (const char*[]) {
+ "aon_cc_audio_hm_h",
+ "audio_cc_codec_mem",
+ "audio_cc_codec_mem0",
+ "audio_cc_codec_mem1",
+ "audio_cc_codec_mem2",
+ "aon_cc_va_mem0"
+ },
+ .cdc_dma_num_clks = 6,
+ .dai_driver = sc7280_lpass_cpu_dai_driver,
+ .num_dai = ARRAY_SIZE(sc7280_lpass_cpu_dai_driver),
+ .dai_osr_clk_names = (const char *[]) {
+ "audio_cc_ext_mclk0",
+ "null"
+ },
+ .dai_bit_clk_names = (const char *[]) {
+ "core_cc_ext_if0_ibit",
+ "core_cc_ext_if1_ibit"
+ },
+ .init = sc7280_lpass_init,
+ .exit = sc7280_lpass_exit,
+ .alloc_dma_channel = sc7280_lpass_alloc_dma_channel,
+ .free_dma_channel = sc7280_lpass_free_dma_channel,
+};
+
+static const struct of_device_id sc7280_lpass_cpu_device_id[] = {
+ {.compatible = "qcom,sc7280-lpass-cpu", .data = &sc7280_data},
+ {}
+};
+MODULE_DEVICE_TABLE(of, sc7280_lpass_cpu_device_id);
+
+static struct platform_driver sc7280_lpass_cpu_platform_driver = {
+ .driver = {
+ .name = "sc7280-lpass-cpu",
+ .of_match_table = of_match_ptr(sc7280_lpass_cpu_device_id),
+ },
+ .probe = asoc_qcom_lpass_cpu_platform_probe,
+ .remove = asoc_qcom_lpass_cpu_platform_remove,
+ .shutdown = asoc_qcom_lpass_cpu_platform_shutdown,
+};
+
+module_platform_driver(sc7280_lpass_cpu_platform_driver);
+
+MODULE_DESCRIPTION("SC7280 LPASS CPU DRIVER");
+MODULE_LICENSE("GPL");
--
2.7.4
