1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
5 * lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS
10 #include <linux/device.h>
11 #include <linux/err.h>
12 #include <linux/kernel.h>
13 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <sound/pcm.h>
17 #include <sound/pcm_params.h>
18 #include <sound/soc.h>
19 #include <sound/soc-dai.h>
21 #include <dt-bindings/sound/apq8016-lpass.h>
22 #include "lpass-lpaif-reg.h"
25 static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = {
28 .name = "Primary MI2S",
30 .stream_name = "Primary Playback",
31 .formats = SNDRV_PCM_FMTBIT_S16 |
32 SNDRV_PCM_FMTBIT_S24 |
34 .rates = SNDRV_PCM_RATE_8000 |
35 SNDRV_PCM_RATE_16000 |
36 SNDRV_PCM_RATE_32000 |
37 SNDRV_PCM_RATE_48000 |
44 .probe = &asoc_qcom_lpass_cpu_dai_probe,
45 .ops = &asoc_qcom_lpass_cpu_dai_ops,
49 .name = "Secondary MI2S",
51 .stream_name = "Secondary Playback",
52 .formats = SNDRV_PCM_FMTBIT_S16 |
53 SNDRV_PCM_FMTBIT_S24 |
55 .rates = SNDRV_PCM_RATE_8000 |
56 SNDRV_PCM_RATE_16000 |
57 SNDRV_PCM_RATE_32000 |
58 SNDRV_PCM_RATE_48000 |
65 .probe = &asoc_qcom_lpass_cpu_dai_probe,
66 .ops = &asoc_qcom_lpass_cpu_dai_ops,
70 .name = "Tertiary MI2S",
72 .stream_name = "Tertiary Capture",
73 .formats = SNDRV_PCM_FMTBIT_S16 |
74 SNDRV_PCM_FMTBIT_S24 |
76 .rates = SNDRV_PCM_RATE_8000 |
77 SNDRV_PCM_RATE_16000 |
78 SNDRV_PCM_RATE_32000 |
79 SNDRV_PCM_RATE_48000 |
86 .probe = &asoc_qcom_lpass_cpu_dai_probe,
87 .ops = &asoc_qcom_lpass_cpu_dai_ops,
90 .id = MI2S_QUATERNARY,
91 .name = "Quatenary MI2S",
93 .stream_name = "Quatenary Playback",
94 .formats = SNDRV_PCM_FMTBIT_S16 |
95 SNDRV_PCM_FMTBIT_S24 |
97 .rates = SNDRV_PCM_RATE_8000 |
98 SNDRV_PCM_RATE_16000 |
99 SNDRV_PCM_RATE_32000 |
100 SNDRV_PCM_RATE_48000 |
101 SNDRV_PCM_RATE_96000,
108 .stream_name = "Quatenary Capture",
109 .formats = SNDRV_PCM_FMTBIT_S16 |
110 SNDRV_PCM_FMTBIT_S24 |
111 SNDRV_PCM_FMTBIT_S32,
112 .rates = SNDRV_PCM_RATE_8000 |
113 SNDRV_PCM_RATE_16000 |
114 SNDRV_PCM_RATE_32000 |
115 SNDRV_PCM_RATE_48000 |
116 SNDRV_PCM_RATE_96000,
122 .probe = &asoc_qcom_lpass_cpu_dai_probe,
123 .ops = &asoc_qcom_lpass_cpu_dai_ops,
127 static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
130 struct lpass_variant *v = drvdata->variant;
133 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
134 chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
137 if (chan >= v->rdma_channels)
140 chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
141 v->wrdma_channel_start +
143 v->wrdma_channel_start);
145 if (chan >= v->wrdma_channel_start + v->wrdma_channels)
149 set_bit(chan, &drvdata->dma_ch_bit_map);
154 static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
156 clear_bit(chan, &drvdata->dma_ch_bit_map);
161 static int apq8016_lpass_init(struct platform_device *pdev)
163 struct lpass_data *drvdata = platform_get_drvdata(pdev);
164 struct device *dev = &pdev->dev;
167 drvdata->pcnoc_mport_clk = devm_clk_get(dev, "pcnoc-mport-clk");
168 if (IS_ERR(drvdata->pcnoc_mport_clk)) {
169 dev_err(dev, "error getting pcnoc-mport-clk: %ld\n",
170 PTR_ERR(drvdata->pcnoc_mport_clk));
171 return PTR_ERR(drvdata->pcnoc_mport_clk);
174 ret = clk_prepare_enable(drvdata->pcnoc_mport_clk);
176 dev_err(dev, "Error enabling pcnoc-mport-clk: %d\n", ret);
180 drvdata->pcnoc_sway_clk = devm_clk_get(dev, "pcnoc-sway-clk");
181 if (IS_ERR(drvdata->pcnoc_sway_clk)) {
182 dev_err(dev, "error getting pcnoc-sway-clk: %ld\n",
183 PTR_ERR(drvdata->pcnoc_sway_clk));
184 return PTR_ERR(drvdata->pcnoc_sway_clk);
187 ret = clk_prepare_enable(drvdata->pcnoc_sway_clk);
189 dev_err(dev, "Error enabling pcnoc_sway_clk: %d\n", ret);
196 static int apq8016_lpass_exit(struct platform_device *pdev)
198 struct lpass_data *drvdata = platform_get_drvdata(pdev);
200 clk_disable_unprepare(drvdata->pcnoc_mport_clk);
201 clk_disable_unprepare(drvdata->pcnoc_sway_clk);
207 static struct lpass_variant apq8016_data = {
208 .i2sctrl_reg_base = 0x1000,
209 .i2sctrl_reg_stride = 0x1000,
211 .irq_reg_base = 0x6000,
212 .irq_reg_stride = 0x1000,
214 .rdma_reg_base = 0x8400,
215 .rdma_reg_stride = 0x1000,
217 .dmactl_audif_start = 1,
218 .wrdma_reg_base = 0xB000,
219 .wrdma_reg_stride = 0x1000,
220 .wrdma_channel_start = 5,
222 .dai_driver = apq8016_lpass_cpu_dai_driver,
223 .num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver),
224 .dai_osr_clk_names = (const char *[]) {
230 .dai_bit_clk_names = (const char *[]) {
236 .init = apq8016_lpass_init,
237 .exit = apq8016_lpass_exit,
238 .alloc_dma_channel = apq8016_lpass_alloc_dma_channel,
239 .free_dma_channel = apq8016_lpass_free_dma_channel,
242 static const struct of_device_id apq8016_lpass_cpu_device_id[] = {
243 { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data },
246 MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id);
248 static struct platform_driver apq8016_lpass_cpu_platform_driver = {
250 .name = "apq8016-lpass-cpu",
251 .of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id),
253 .probe = asoc_qcom_lpass_cpu_platform_probe,
254 .remove = asoc_qcom_lpass_cpu_platform_remove,
256 module_platform_driver(apq8016_lpass_cpu_platform_driver);
258 MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver");
259 MODULE_LICENSE("GPL v2");