309 lines
8.8 KiB
C
309 lines
8.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*
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* lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
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*/
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <dt-bindings/sound/sc7180-lpass.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include "lpass-lpaif-reg.h"
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#include "lpass.h"
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static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = {
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{
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.id = MI2S_PRIMARY,
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.name = "Primary MI2S",
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.playback = {
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.stream_name = "Primary Playback",
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.formats = SNDRV_PCM_FMTBIT_S16,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_max = 2,
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},
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.capture = {
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.stream_name = "Primary Capture",
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.formats = SNDRV_PCM_FMTBIT_S16 |
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SNDRV_PCM_FMTBIT_S32,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_max = 2,
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},
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.probe = &asoc_qcom_lpass_cpu_dai_probe,
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.ops = &asoc_qcom_lpass_cpu_dai_ops,
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}, {
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.id = MI2S_SECONDARY,
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.name = "Secondary MI2S",
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.playback = {
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.stream_name = "Secondary Playback",
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.formats = SNDRV_PCM_FMTBIT_S16,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_max = 2,
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},
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.probe = &asoc_qcom_lpass_cpu_dai_probe,
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.ops = &asoc_qcom_lpass_cpu_dai_ops,
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.pcm_new = lpass_cpu_pcm_new,
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}, {
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.id = LPASS_DP_RX,
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.name = "Hdmi",
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.playback = {
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.stream_name = "Hdmi Playback",
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.formats = SNDRV_PCM_FMTBIT_S24,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_max = 2,
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},
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.ops = &asoc_qcom_lpass_hdmi_dai_ops,
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},
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};
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static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata,
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int direction, unsigned int dai_id)
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{
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struct lpass_variant *v = drvdata->variant;
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int chan = 0;
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if (dai_id == LPASS_DP_RX) {
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if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
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chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
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v->hdmi_rdma_channels);
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if (chan >= v->hdmi_rdma_channels)
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return -EBUSY;
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}
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set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
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} else {
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if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
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chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
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v->rdma_channels);
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if (chan >= v->rdma_channels)
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return -EBUSY;
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} else {
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chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
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v->wrdma_channel_start +
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v->wrdma_channels,
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v->wrdma_channel_start);
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if (chan >= v->wrdma_channel_start + v->wrdma_channels)
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return -EBUSY;
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}
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set_bit(chan, &drvdata->dma_ch_bit_map);
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}
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return chan;
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}
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static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
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{
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if (dai_id == LPASS_DP_RX)
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clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
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else
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clear_bit(chan, &drvdata->dma_ch_bit_map);
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return 0;
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}
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static int sc7180_lpass_init(struct platform_device *pdev)
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{
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struct lpass_data *drvdata = platform_get_drvdata(pdev);
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struct lpass_variant *variant = drvdata->variant;
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struct device *dev = &pdev->dev;
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int ret, i;
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drvdata->clks = devm_kcalloc(dev, variant->num_clks,
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sizeof(*drvdata->clks), GFP_KERNEL);
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if (!drvdata->clks)
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return -ENOMEM;
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drvdata->num_clks = variant->num_clks;
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for (i = 0; i < drvdata->num_clks; i++)
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drvdata->clks[i].id = variant->clk_name[i];
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ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
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if (ret) {
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dev_err(dev, "Failed to get clocks %d\n", ret);
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return ret;
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}
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ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
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if (ret) {
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dev_err(dev, "sc7180 clk_enable failed\n");
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return ret;
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}
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return 0;
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}
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static int sc7180_lpass_exit(struct platform_device *pdev)
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{
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struct lpass_data *drvdata = platform_get_drvdata(pdev);
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clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
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return 0;
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}
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static struct lpass_variant sc7180_data = {
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.i2sctrl_reg_base = 0x1000,
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.i2sctrl_reg_stride = 0x1000,
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.i2s_ports = 3,
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.irq_reg_base = 0x9000,
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.irq_reg_stride = 0x1000,
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.irq_ports = 3,
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.rdma_reg_base = 0xC000,
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.rdma_reg_stride = 0x1000,
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.rdma_channels = 5,
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.hdmi_rdma_reg_base = 0x64000,
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.hdmi_rdma_reg_stride = 0x1000,
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.hdmi_rdma_channels = 4,
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.dmactl_audif_start = 1,
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.wrdma_reg_base = 0x18000,
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.wrdma_reg_stride = 0x1000,
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.wrdma_channel_start = 5,
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.wrdma_channels = 4,
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.loopback = REG_FIELD_ID(0x1000, 17, 17, 3, 0x1000),
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.spken = REG_FIELD_ID(0x1000, 16, 16, 3, 0x1000),
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.spkmode = REG_FIELD_ID(0x1000, 11, 15, 3, 0x1000),
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.spkmono = REG_FIELD_ID(0x1000, 10, 10, 3, 0x1000),
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.micen = REG_FIELD_ID(0x1000, 9, 9, 3, 0x1000),
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.micmode = REG_FIELD_ID(0x1000, 4, 8, 3, 0x1000),
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.micmono = REG_FIELD_ID(0x1000, 3, 3, 3, 0x1000),
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.wssrc = REG_FIELD_ID(0x1000, 2, 2, 3, 0x1000),
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.bitwidth = REG_FIELD_ID(0x1000, 0, 1, 3, 0x1000),
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.rdma_dyncclk = REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
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.rdma_bursten = REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
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.rdma_wpscnt = REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
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.rdma_intf = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
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.rdma_fifowm = REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
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.rdma_enable = REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),
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.wrdma_dyncclk = REG_FIELD_ID(0x18000, 22, 22, 4, 0x1000),
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.wrdma_bursten = REG_FIELD_ID(0x18000, 21, 21, 4, 0x1000),
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.wrdma_wpscnt = REG_FIELD_ID(0x18000, 17, 20, 4, 0x1000),
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.wrdma_intf = REG_FIELD_ID(0x18000, 12, 16, 4, 0x1000),
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.wrdma_fifowm = REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
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.wrdma_enable = REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),
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.hdmi_tx_ctl_addr = 0x1000,
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.hdmi_legacy_addr = 0x1008,
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.hdmi_vbit_addr = 0x610c0,
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.hdmi_ch_lsb_addr = 0x61048,
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.hdmi_ch_msb_addr = 0x6104c,
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.ch_stride = 0x8,
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.hdmi_parity_addr = 0x61034,
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.hdmi_dmactl_addr = 0x61038,
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.hdmi_dma_stride = 0x4,
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.hdmi_DP_addr = 0x610c8,
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.hdmi_sstream_addr = 0x6101c,
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.hdmi_irq_reg_base = 0x63000,
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.hdmi_irq_ports = 1,
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.hdmi_rdma_dyncclk = REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
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.hdmi_rdma_bursten = REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
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.hdmi_rdma_burst8 = REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
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.hdmi_rdma_burst16 = REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
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.hdmi_rdma_dynburst = REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
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.hdmi_rdma_wpscnt = REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
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.hdmi_rdma_fifowm = REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
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.hdmi_rdma_enable = REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),
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.sstream_en = REG_FIELD(0x6101c, 0, 0),
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.dma_sel = REG_FIELD(0x6101c, 1, 2),
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.auto_bbit_en = REG_FIELD(0x6101c, 3, 3),
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.layout = REG_FIELD(0x6101c, 4, 4),
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.layout_sp = REG_FIELD(0x6101c, 5, 8),
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.set_sp_on_en = REG_FIELD(0x6101c, 10, 10),
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.dp_audio = REG_FIELD(0x6101c, 11, 11),
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.dp_staffing_en = REG_FIELD(0x6101c, 12, 12),
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.dp_sp_b_hw_en = REG_FIELD(0x6101c, 13, 13),
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.mute = REG_FIELD(0x610c8, 0, 0),
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.as_sdp_cc = REG_FIELD(0x610c8, 1, 3),
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.as_sdp_ct = REG_FIELD(0x610c8, 4, 7),
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.aif_db4 = REG_FIELD(0x610c8, 8, 15),
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.frequency = REG_FIELD(0x610c8, 16, 21),
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.mst_index = REG_FIELD(0x610c8, 28, 29),
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.dptx_index = REG_FIELD(0x610c8, 30, 31),
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.soft_reset = REG_FIELD(0x1000, 31, 31),
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.force_reset = REG_FIELD(0x1000, 30, 30),
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.use_hw_chs = REG_FIELD(0x61038, 0, 0),
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.use_hw_usr = REG_FIELD(0x61038, 1, 1),
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.hw_chs_sel = REG_FIELD(0x61038, 2, 4),
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.hw_usr_sel = REG_FIELD(0x61038, 5, 6),
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.replace_vbit = REG_FIELD(0x610c0, 0, 0),
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.vbit_stream = REG_FIELD(0x610c0, 1, 1),
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.legacy_en = REG_FIELD(0x1008, 0, 0),
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.calc_en = REG_FIELD(0x61034, 0, 0),
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.lsb_bits = REG_FIELD(0x61048, 0, 31),
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.msb_bits = REG_FIELD(0x6104c, 0, 31),
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.clk_name = (const char*[]) {
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"pcnoc-sway-clk",
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"audio-core",
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"pcnoc-mport-clk",
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},
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.num_clks = 3,
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.dai_driver = sc7180_lpass_cpu_dai_driver,
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.num_dai = ARRAY_SIZE(sc7180_lpass_cpu_dai_driver),
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.dai_osr_clk_names = (const char *[]) {
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"mclk0",
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"null",
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},
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.dai_bit_clk_names = (const char *[]) {
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"mi2s-bit-clk0",
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"mi2s-bit-clk1",
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},
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.init = sc7180_lpass_init,
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.exit = sc7180_lpass_exit,
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.alloc_dma_channel = sc7180_lpass_alloc_dma_channel,
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.free_dma_channel = sc7180_lpass_free_dma_channel,
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};
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static const struct of_device_id sc7180_lpass_cpu_device_id[] __maybe_unused = {
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{.compatible = "qcom,sc7180-lpass-cpu", .data = &sc7180_data},
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{}
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};
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MODULE_DEVICE_TABLE(of, sc7180_lpass_cpu_device_id);
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static struct platform_driver sc7180_lpass_cpu_platform_driver = {
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.driver = {
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.name = "sc7180-lpass-cpu",
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.of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id),
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},
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.probe = asoc_qcom_lpass_cpu_platform_probe,
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.remove = asoc_qcom_lpass_cpu_platform_remove,
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.shutdown = asoc_qcom_lpass_cpu_platform_shutdown,
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};
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module_platform_driver(sc7180_lpass_cpu_platform_driver);
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MODULE_DESCRIPTION("SC7180 LPASS CPU DRIVER");
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MODULE_LICENSE("GPL v2");
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