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9#include <linux/clk.h>
10#include <linux/device.h>
11#include <linux/err.h>
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/of.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>
20
21#include <dt-bindings/sound/apq8016-lpass.h>
22#include "lpass-lpaif-reg.h"
23#include "lpass.h"
24
25static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = {
26 [MI2S_PRIMARY] = {
27 .id = MI2S_PRIMARY,
28 .name = "Primary MI2S",
29 .playback = {
30 .stream_name = "Primary Playback",
31 .formats = SNDRV_PCM_FMTBIT_S16 |
32 SNDRV_PCM_FMTBIT_S24 |
33 SNDRV_PCM_FMTBIT_S32,
34 .rates = SNDRV_PCM_RATE_8000 |
35 SNDRV_PCM_RATE_16000 |
36 SNDRV_PCM_RATE_32000 |
37 SNDRV_PCM_RATE_48000 |
38 SNDRV_PCM_RATE_96000,
39 .rate_min = 8000,
40 .rate_max = 96000,
41 .channels_min = 1,
42 .channels_max = 8,
43 },
44 .probe = &asoc_qcom_lpass_cpu_dai_probe,
45 .ops = &asoc_qcom_lpass_cpu_dai_ops,
46 },
47 [MI2S_SECONDARY] = {
48 .id = MI2S_SECONDARY,
49 .name = "Secondary MI2S",
50 .playback = {
51 .stream_name = "Secondary Playback",
52 .formats = SNDRV_PCM_FMTBIT_S16 |
53 SNDRV_PCM_FMTBIT_S24 |
54 SNDRV_PCM_FMTBIT_S32,
55 .rates = SNDRV_PCM_RATE_8000 |
56 SNDRV_PCM_RATE_16000 |
57 SNDRV_PCM_RATE_32000 |
58 SNDRV_PCM_RATE_48000 |
59 SNDRV_PCM_RATE_96000,
60 .rate_min = 8000,
61 .rate_max = 96000,
62 .channels_min = 1,
63 .channels_max = 8,
64 },
65 .probe = &asoc_qcom_lpass_cpu_dai_probe,
66 .ops = &asoc_qcom_lpass_cpu_dai_ops,
67 },
68 [MI2S_TERTIARY] = {
69 .id = MI2S_TERTIARY,
70 .name = "Tertiary MI2S",
71 .capture = {
72 .stream_name = "Tertiary Capture",
73 .formats = SNDRV_PCM_FMTBIT_S16 |
74 SNDRV_PCM_FMTBIT_S24 |
75 SNDRV_PCM_FMTBIT_S32,
76 .rates = SNDRV_PCM_RATE_8000 |
77 SNDRV_PCM_RATE_16000 |
78 SNDRV_PCM_RATE_32000 |
79 SNDRV_PCM_RATE_48000 |
80 SNDRV_PCM_RATE_96000,
81 .rate_min = 8000,
82 .rate_max = 96000,
83 .channels_min = 1,
84 .channels_max = 8,
85 },
86 .probe = &asoc_qcom_lpass_cpu_dai_probe,
87 .ops = &asoc_qcom_lpass_cpu_dai_ops,
88 },
89 [MI2S_QUATERNARY] = {
90 .id = MI2S_QUATERNARY,
91 .name = "Quatenary MI2S",
92 .playback = {
93 .stream_name = "Quatenary Playback",
94 .formats = SNDRV_PCM_FMTBIT_S16 |
95 SNDRV_PCM_FMTBIT_S24 |
96 SNDRV_PCM_FMTBIT_S32,
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,
102 .rate_min = 8000,
103 .rate_max = 96000,
104 .channels_min = 1,
105 .channels_max = 8,
106 },
107 .capture = {
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,
117 .rate_min = 8000,
118 .rate_max = 96000,
119 .channels_min = 1,
120 .channels_max = 8,
121 },
122 .probe = &asoc_qcom_lpass_cpu_dai_probe,
123 .ops = &asoc_qcom_lpass_cpu_dai_ops,
124 },
125};
126
127static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
128 int direction)
129{
130 struct lpass_variant *v = drvdata->variant;
131 int chan = 0;
132
133 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
134 chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
135 v->rdma_channels);
136
137 if (chan >= v->rdma_channels)
138 return -EBUSY;
139 } else {
140 chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
141 v->wrdma_channel_start +
142 v->wrdma_channels,
143 v->wrdma_channel_start);
144
145 if (chan >= v->wrdma_channel_start + v->wrdma_channels)
146 return -EBUSY;
147 }
148
149 set_bit(chan, &drvdata->dma_ch_bit_map);
150
151 return chan;
152}
153
154static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
155{
156 clear_bit(chan, &drvdata->dma_ch_bit_map);
157
158 return 0;
159}
160
161static int apq8016_lpass_init(struct platform_device *pdev)
162{
163 struct lpass_data *drvdata = platform_get_drvdata(pdev);
164 struct device *dev = &pdev->dev;
165 int ret;
166
167 drvdata->pcnoc_mport_clk = devm_clk_get(dev, "pcnoc-mport-clk");
168 if (IS_ERR(drvdata->pcnoc_mport_clk)) {
169 dev_err(&pdev->dev, "error getting pcnoc-mport-clk: %ld\n",
170 PTR_ERR(drvdata->pcnoc_mport_clk));
171 return PTR_ERR(drvdata->pcnoc_mport_clk);
172 }
173
174 ret = clk_prepare_enable(drvdata->pcnoc_mport_clk);
175 if (ret) {
176 dev_err(&pdev->dev, "Error enabling pcnoc-mport-clk: %d\n",
177 ret);
178 return ret;
179 }
180
181 drvdata->pcnoc_sway_clk = devm_clk_get(dev, "pcnoc-sway-clk");
182 if (IS_ERR(drvdata->pcnoc_sway_clk)) {
183 dev_err(&pdev->dev, "error getting pcnoc-sway-clk: %ld\n",
184 PTR_ERR(drvdata->pcnoc_sway_clk));
185 return PTR_ERR(drvdata->pcnoc_sway_clk);
186 }
187
188 ret = clk_prepare_enable(drvdata->pcnoc_sway_clk);
189 if (ret) {
190 dev_err(&pdev->dev, "Error enabling pcnoc_sway_clk: %d\n", ret);
191 return ret;
192 }
193
194 return 0;
195}
196
197static int apq8016_lpass_exit(struct platform_device *pdev)
198{
199 struct lpass_data *drvdata = platform_get_drvdata(pdev);
200
201 clk_disable_unprepare(drvdata->pcnoc_mport_clk);
202 clk_disable_unprepare(drvdata->pcnoc_sway_clk);
203
204 return 0;
205}
206
207
208static struct lpass_variant apq8016_data = {
209 .i2sctrl_reg_base = 0x1000,
210 .i2sctrl_reg_stride = 0x1000,
211 .i2s_ports = 4,
212 .irq_reg_base = 0x6000,
213 .irq_reg_stride = 0x1000,
214 .irq_ports = 3,
215 .rdma_reg_base = 0x8400,
216 .rdma_reg_stride = 0x1000,
217 .rdma_channels = 2,
218 .dmactl_audif_start = 1,
219 .wrdma_reg_base = 0xB000,
220 .wrdma_reg_stride = 0x1000,
221 .wrdma_channel_start = 5,
222 .wrdma_channels = 2,
223 .dai_driver = apq8016_lpass_cpu_dai_driver,
224 .num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver),
225 .dai_osr_clk_names = (const char *[]) {
226 "mi2s-osr-clk0",
227 "mi2s-osr-clk1",
228 "mi2s-osr-clk2",
229 "mi2s-osr-clk3",
230 },
231 .dai_bit_clk_names = (const char *[]) {
232 "mi2s-bit-clk0",
233 "mi2s-bit-clk1",
234 "mi2s-bit-clk2",
235 "mi2s-bit-clk3",
236 },
237 .init = apq8016_lpass_init,
238 .exit = apq8016_lpass_exit,
239 .alloc_dma_channel = apq8016_lpass_alloc_dma_channel,
240 .free_dma_channel = apq8016_lpass_free_dma_channel,
241};
242
243static const struct of_device_id apq8016_lpass_cpu_device_id[] = {
244 { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data },
245 {}
246};
247MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id);
248
249static struct platform_driver apq8016_lpass_cpu_platform_driver = {
250 .driver = {
251 .name = "apq8016-lpass-cpu",
252 .of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id),
253 },
254 .probe = asoc_qcom_lpass_cpu_platform_probe,
255 .remove = asoc_qcom_lpass_cpu_platform_remove,
256};
257module_platform_driver(apq8016_lpass_cpu_platform_driver);
258
259MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver");
260MODULE_LICENSE("GPL v2");
261
262
