1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2020, The Linux Foundation. All rights reserved.
4 *
5 * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
6 */
7
8 #include <linux/clk.h>
9 #include <linux/device.h>
10 #include <linux/err.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/platform_device.h>
15 #include <linux/pm_runtime.h>
16 #include <dt-bindings/sound/sc7180-lpass.h>
17 #include <sound/pcm.h>
18 #include <sound/soc.h>
19
20 #include "lpass-lpaif-reg.h"
21 #include "lpass.h"
22
23 static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = {
24 {
25 .id = MI2S_PRIMARY,
26 .name = "Primary MI2S",
27 .playback = {
28 .stream_name = "Primary Playback",
29 .formats = SNDRV_PCM_FMTBIT_S16,
30 .rates = SNDRV_PCM_RATE_48000,
31 .rate_min = 48000,
32 .rate_max = 48000,
33 .channels_min = 2,
34 .channels_max = 2,
35 },
36 .capture = {
37 .stream_name = "Primary Capture",
38 .formats = SNDRV_PCM_FMTBIT_S16 |
39 SNDRV_PCM_FMTBIT_S32,
40 .rates = SNDRV_PCM_RATE_48000,
41 .rate_min = 48000,
42 .rate_max = 48000,
43 .channels_min = 2,
44 .channels_max = 2,
45 },
46 .probe = &asoc_qcom_lpass_cpu_dai_probe,
47 .ops = &asoc_qcom_lpass_cpu_dai_ops,
48 }, {
49 .id = MI2S_SECONDARY,
50 .name = "Secondary MI2S",
51 .playback = {
52 .stream_name = "Secondary Playback",
53 .formats = SNDRV_PCM_FMTBIT_S16,
54 .rates = SNDRV_PCM_RATE_48000,
55 .rate_min = 48000,
56 .rate_max = 48000,
57 .channels_min = 2,
58 .channels_max = 2,
59 },
60 .probe = &asoc_qcom_lpass_cpu_dai_probe,
61 .ops = &asoc_qcom_lpass_cpu_dai_ops,
62 .pcm_new = lpass_cpu_pcm_new,
63 }, {
64 .id = LPASS_DP_RX,
65 .name = "Hdmi",
66 .playback = {
67 .stream_name = "Hdmi Playback",
68 .formats = SNDRV_PCM_FMTBIT_S24,
69 .rates = SNDRV_PCM_RATE_48000,
70 .rate_min = 48000,
71 .rate_max = 48000,
72 .channels_min = 2,
73 .channels_max = 2,
74 },
75 .ops = &asoc_qcom_lpass_hdmi_dai_ops,
76 },
77 };
78
sc7180_lpass_alloc_dma_channel(struct lpass_data * drvdata,int direction,unsigned int dai_id)79 static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata,
80 int direction, unsigned int dai_id)
81 {
82 struct lpass_variant *v = drvdata->variant;
83 int chan = 0;
84
85 if (dai_id == LPASS_DP_RX) {
86 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
87 chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
88 v->hdmi_rdma_channels);
89
90 if (chan >= v->hdmi_rdma_channels)
91 return -EBUSY;
92 }
93 set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
94 } else {
95 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
96 chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
97 v->rdma_channels);
98
99 if (chan >= v->rdma_channels)
100 return -EBUSY;
101 } else {
102 chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
103 v->wrdma_channel_start +
104 v->wrdma_channels,
105 v->wrdma_channel_start);
106
107 if (chan >= v->wrdma_channel_start + v->wrdma_channels)
108 return -EBUSY;
109 }
110
111 set_bit(chan, &drvdata->dma_ch_bit_map);
112 }
113 return chan;
114 }
115
sc7180_lpass_free_dma_channel(struct lpass_data * drvdata,int chan,unsigned int dai_id)116 static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
117 {
118 if (dai_id == LPASS_DP_RX)
119 clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
120 else
121 clear_bit(chan, &drvdata->dma_ch_bit_map);
122
123 return 0;
124 }
125
sc7180_lpass_init(struct platform_device * pdev)126 static int sc7180_lpass_init(struct platform_device *pdev)
127 {
128 struct lpass_data *drvdata = platform_get_drvdata(pdev);
129 struct lpass_variant *variant = drvdata->variant;
130 struct device *dev = &pdev->dev;
131 int ret, i;
132
133 drvdata->clks = devm_kcalloc(dev, variant->num_clks,
134 sizeof(*drvdata->clks), GFP_KERNEL);
135 if (!drvdata->clks)
136 return -ENOMEM;
137
138 drvdata->num_clks = variant->num_clks;
139
140 for (i = 0; i < drvdata->num_clks; i++)
141 drvdata->clks[i].id = variant->clk_name[i];
142
143 ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
144 if (ret) {
145 dev_err(dev, "Failed to get clocks %d\n", ret);
146 return ret;
147 }
148
149 ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
150 if (ret) {
151 dev_err(dev, "sc7180 clk_enable failed\n");
152 return ret;
153 }
154
155 return 0;
156 }
157
sc7180_lpass_exit(struct platform_device * pdev)158 static int sc7180_lpass_exit(struct platform_device *pdev)
159 {
160 struct lpass_data *drvdata = platform_get_drvdata(pdev);
161
162 clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
163 return 0;
164 }
165
sc7180_lpass_dev_resume(struct device * dev)166 static int __maybe_unused sc7180_lpass_dev_resume(struct device *dev)
167 {
168 struct lpass_data *drvdata = dev_get_drvdata(dev);
169
170 return clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
171 }
172
sc7180_lpass_dev_suspend(struct device * dev)173 static int __maybe_unused sc7180_lpass_dev_suspend(struct device *dev)
174 {
175 struct lpass_data *drvdata = dev_get_drvdata(dev);
176
177 clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
178 return 0;
179 }
180
181 static const struct dev_pm_ops sc7180_lpass_pm_ops = {
182 SET_SYSTEM_SLEEP_PM_OPS(sc7180_lpass_dev_suspend, sc7180_lpass_dev_resume)
183 };
184
185 static struct lpass_variant sc7180_data = {
186 .i2sctrl_reg_base = 0x1000,
187 .i2sctrl_reg_stride = 0x1000,
188 .i2s_ports = 3,
189 .irq_reg_base = 0x9000,
190 .irq_reg_stride = 0x1000,
191 .irq_ports = 3,
192 .rdma_reg_base = 0xC000,
193 .rdma_reg_stride = 0x1000,
194 .rdma_channels = 5,
195 .hdmi_rdma_reg_base = 0x64000,
196 .hdmi_rdma_reg_stride = 0x1000,
197 .hdmi_rdma_channels = 4,
198 .dmactl_audif_start = 1,
199 .wrdma_reg_base = 0x18000,
200 .wrdma_reg_stride = 0x1000,
201 .wrdma_channel_start = 5,
202 .wrdma_channels = 4,
203
204 .loopback = REG_FIELD_ID(0x1000, 17, 17, 3, 0x1000),
205 .spken = REG_FIELD_ID(0x1000, 16, 16, 3, 0x1000),
206 .spkmode = REG_FIELD_ID(0x1000, 11, 15, 3, 0x1000),
207 .spkmono = REG_FIELD_ID(0x1000, 10, 10, 3, 0x1000),
208 .micen = REG_FIELD_ID(0x1000, 9, 9, 3, 0x1000),
209 .micmode = REG_FIELD_ID(0x1000, 4, 8, 3, 0x1000),
210 .micmono = REG_FIELD_ID(0x1000, 3, 3, 3, 0x1000),
211 .wssrc = REG_FIELD_ID(0x1000, 2, 2, 3, 0x1000),
212 .bitwidth = REG_FIELD_ID(0x1000, 0, 1, 3, 0x1000),
213
214 .rdma_dyncclk = REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
215 .rdma_bursten = REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
216 .rdma_wpscnt = REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
217 .rdma_intf = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
218 .rdma_fifowm = REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
219 .rdma_enable = REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),
220
221 .wrdma_dyncclk = REG_FIELD_ID(0x18000, 22, 22, 4, 0x1000),
222 .wrdma_bursten = REG_FIELD_ID(0x18000, 21, 21, 4, 0x1000),
223 .wrdma_wpscnt = REG_FIELD_ID(0x18000, 17, 20, 4, 0x1000),
224 .wrdma_intf = REG_FIELD_ID(0x18000, 12, 16, 4, 0x1000),
225 .wrdma_fifowm = REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
226 .wrdma_enable = REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),
227
228 .hdmi_tx_ctl_addr = 0x1000,
229 .hdmi_legacy_addr = 0x1008,
230 .hdmi_vbit_addr = 0x610c0,
231 .hdmi_ch_lsb_addr = 0x61048,
232 .hdmi_ch_msb_addr = 0x6104c,
233 .ch_stride = 0x8,
234 .hdmi_parity_addr = 0x61034,
235 .hdmi_dmactl_addr = 0x61038,
236 .hdmi_dma_stride = 0x4,
237 .hdmi_DP_addr = 0x610c8,
238 .hdmi_sstream_addr = 0x6101c,
239 .hdmi_irq_reg_base = 0x63000,
240 .hdmi_irq_ports = 1,
241
242 .hdmi_rdma_dyncclk = REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
243 .hdmi_rdma_bursten = REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
244 .hdmi_rdma_burst8 = REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
245 .hdmi_rdma_burst16 = REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
246 .hdmi_rdma_dynburst = REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
247 .hdmi_rdma_wpscnt = REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
248 .hdmi_rdma_fifowm = REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
249 .hdmi_rdma_enable = REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),
250
251 .sstream_en = REG_FIELD(0x6101c, 0, 0),
252 .dma_sel = REG_FIELD(0x6101c, 1, 2),
253 .auto_bbit_en = REG_FIELD(0x6101c, 3, 3),
254 .layout = REG_FIELD(0x6101c, 4, 4),
255 .layout_sp = REG_FIELD(0x6101c, 5, 8),
256 .set_sp_on_en = REG_FIELD(0x6101c, 10, 10),
257 .dp_audio = REG_FIELD(0x6101c, 11, 11),
258 .dp_staffing_en = REG_FIELD(0x6101c, 12, 12),
259 .dp_sp_b_hw_en = REG_FIELD(0x6101c, 13, 13),
260
261 .mute = REG_FIELD(0x610c8, 0, 0),
262 .as_sdp_cc = REG_FIELD(0x610c8, 1, 3),
263 .as_sdp_ct = REG_FIELD(0x610c8, 4, 7),
264 .aif_db4 = REG_FIELD(0x610c8, 8, 15),
265 .frequency = REG_FIELD(0x610c8, 16, 21),
266 .mst_index = REG_FIELD(0x610c8, 28, 29),
267 .dptx_index = REG_FIELD(0x610c8, 30, 31),
268
269 .soft_reset = REG_FIELD(0x1000, 31, 31),
270 .force_reset = REG_FIELD(0x1000, 30, 30),
271
272 .use_hw_chs = REG_FIELD(0x61038, 0, 0),
273 .use_hw_usr = REG_FIELD(0x61038, 1, 1),
274 .hw_chs_sel = REG_FIELD(0x61038, 2, 4),
275 .hw_usr_sel = REG_FIELD(0x61038, 5, 6),
276
277 .replace_vbit = REG_FIELD(0x610c0, 0, 0),
278 .vbit_stream = REG_FIELD(0x610c0, 1, 1),
279
280 .legacy_en = REG_FIELD(0x1008, 0, 0),
281 .calc_en = REG_FIELD(0x61034, 0, 0),
282 .lsb_bits = REG_FIELD(0x61048, 0, 31),
283 .msb_bits = REG_FIELD(0x6104c, 0, 31),
284
285
286 .clk_name = (const char*[]) {
287 "pcnoc-sway-clk",
288 "audio-core",
289 "pcnoc-mport-clk",
290 },
291 .num_clks = 3,
292 .dai_driver = sc7180_lpass_cpu_dai_driver,
293 .num_dai = ARRAY_SIZE(sc7180_lpass_cpu_dai_driver),
294 .dai_osr_clk_names = (const char *[]) {
295 "mclk0",
296 "null",
297 },
298 .dai_bit_clk_names = (const char *[]) {
299 "mi2s-bit-clk0",
300 "mi2s-bit-clk1",
301 },
302 .init = sc7180_lpass_init,
303 .exit = sc7180_lpass_exit,
304 .alloc_dma_channel = sc7180_lpass_alloc_dma_channel,
305 .free_dma_channel = sc7180_lpass_free_dma_channel,
306 };
307
308 static const struct of_device_id sc7180_lpass_cpu_device_id[] __maybe_unused = {
309 {.compatible = "qcom,sc7180-lpass-cpu", .data = &sc7180_data},
310 {}
311 };
312 MODULE_DEVICE_TABLE(of, sc7180_lpass_cpu_device_id);
313
314 static struct platform_driver sc7180_lpass_cpu_platform_driver = {
315 .driver = {
316 .name = "sc7180-lpass-cpu",
317 .of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id),
318 .pm = &sc7180_lpass_pm_ops,
319 },
320 .probe = asoc_qcom_lpass_cpu_platform_probe,
321 .remove = asoc_qcom_lpass_cpu_platform_remove,
322 .shutdown = asoc_qcom_lpass_cpu_platform_shutdown,
323 };
324
325 module_platform_driver(sc7180_lpass_cpu_platform_driver);
326
327 MODULE_DESCRIPTION("SC7180 LPASS CPU DRIVER");
328 MODULE_LICENSE("GPL v2");
329