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1 From c516c261c49d0ce9509d6b9623dec6a4e9f919c3 Mon Sep 17 00:00:00 2001
2 From: Shengjiu Wang <shengjiu.wang@freescale.com>
3 Date: Mon, 30 Mar 2020 16:21:00 +0800
4 Subject: [PATCH] MLK-13574-2: ASoC: fsl_sai: refine driver for ip upgrade
5
6 In imx7ulp1, the sai can support two TX channel and two RX
7 channels, So the usage need to be updated.
8
9 Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
10 [rebase]
11 Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
12 ---
13 sound/soc/fsl/fsl_sai.c | 145 ++++++++++++++++++++++++++++++++++++++++--------
14 sound/soc/fsl/fsl_sai.h | 37 ++++++++++--
15 2 files changed, 156 insertions(+), 26 deletions(-)
16
17 --- a/sound/soc/fsl/fsl_sai.c
18 +++ b/sound/soc/fsl/fsl_sai.c
19 @@ -8,16 +8,19 @@
20 #include <linux/delay.h>
21 #include <linux/dmaengine.h>
22 #include <linux/module.h>
23 +#include <linux/of_device.h>
24 #include <linux/of_address.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/regmap.h>
27 #include <linux/slab.h>
28 #include <linux/time.h>
29 +#include <linux/pm_qos.h>
30 #include <sound/core.h>
31 #include <sound/dmaengine_pcm.h>
32 #include <sound/pcm_params.h>
33 #include <linux/mfd/syscon.h>
34 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
35 +#include <linux/pm_runtime.h>
36
37 #include "fsl_sai.h"
38 #include "imx-pcm.h"
39 @@ -25,6 +28,39 @@
40 #define FSL_SAI_FLAGS (FSL_SAI_CSR_SEIE |\
41 FSL_SAI_CSR_FEIE)
42
43 +static struct fsl_sai_soc_data fsl_sai_vf610 = {
44 + .imx = false,
45 + /*dataline is mask, not index*/
46 + .dataline = 0x1,
47 + .fifos = 1,
48 + .fifo_depth = 32,
49 + .flags = 0,
50 +};
51 +
52 +static struct fsl_sai_soc_data fsl_sai_imx6sx = {
53 + .imx = true,
54 + .dataline = 0x1,
55 + .fifos = 1,
56 + .fifo_depth = 32,
57 + .flags = 0,
58 +};
59 +
60 +static struct fsl_sai_soc_data fsl_sai_imx6ul = {
61 + .imx = true,
62 + .dataline = 0x1,
63 + .fifos = 1,
64 + .fifo_depth = 32,
65 + .flags = 0,
66 +};
67 +
68 +static struct fsl_sai_soc_data fsl_sai_imx7ulp = {
69 + .imx = true,
70 + .dataline = 0x3,
71 + .fifos = 2,
72 + .fifo_depth = 16,
73 + .flags = SAI_FLAG_PMQOS,
74 +};
75 +
76 static const unsigned int fsl_sai_rates[] = {
77 8000, 11025, 12000, 16000, 22050,
78 24000, 32000, 44100, 48000, 64000,
79 @@ -505,6 +541,29 @@ static int fsl_sai_hw_params(struct snd_
80 }
81 }
82
83 + if (sai->soc->dataline != 0x1) {
84 + switch (sai->dataline[tx]) {
85 + case 0x0:
86 + break;
87 + case 0x1:
88 + regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx),
89 + FSL_SAI_CR4_FCOMB_SOFT | FSL_SAI_CR4_FCOMB_SHIFT, 0);
90 + break;
91 + case 0x2:
92 + regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx),
93 + FSL_SAI_CR4_FCOMB_SOFT | FSL_SAI_CR4_FCOMB_SHIFT,
94 + FSL_SAI_CR4_FCOMB_SOFT | FSL_SAI_CR4_FCOMB_SHIFT);
95 + break;
96 + case 0x3:
97 + regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx),
98 + FSL_SAI_CR4_FCOMB_SOFT | FSL_SAI_CR4_FCOMB_SHIFT,
99 + FSL_SAI_CR4_FCOMB_SOFT);
100 + break;
101 + default:
102 + break;
103 + }
104 + }
105 +
106 regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx),
107 FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
108 val_cr4);
109 @@ -563,14 +622,16 @@ static int fsl_sai_trigger(struct snd_pc
110 FSL_SAI_CSR_FRDE, FSL_SAI_CSR_FRDE);
111
112 for (i = 0; tx && i < channels; i++)
113 - regmap_write(sai->regmap, FSL_SAI_TDR, 0x0);
114 + regmap_write(sai->regmap, FSL_SAI_TDR0, 0x0);
115 if (tx)
116 udelay(10);
117
118 - regmap_update_bits(sai->regmap, FSL_SAI_RCSR,
119 - FSL_SAI_CSR_TERE, FSL_SAI_CSR_TERE);
120 regmap_update_bits(sai->regmap, FSL_SAI_TCSR,
121 FSL_SAI_CSR_TERE, FSL_SAI_CSR_TERE);
122 + regmap_update_bits(sai->regmap, FSL_SAI_RCSR,
123 + FSL_SAI_CSR_TERE, FSL_SAI_CSR_TERE);
124 + regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx),
125 + FSL_SAI_CSR_SE, FSL_SAI_CSR_SE);
126
127 regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx),
128 FSL_SAI_CSR_xIE_MASK, FSL_SAI_FLAGS);
129 @@ -641,8 +702,8 @@ static int fsl_sai_startup(struct snd_pc
130 else
131 sai->is_stream_opened[tx] = true;
132
133 - regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE,
134 - FSL_SAI_CR3_TRCE);
135 + regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE0|FSL_SAI_CR3_TRCE1,
136 + FSL_SAI_CR3_TRCE(sai->dataline[tx]));
137
138 ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
139 SNDRV_PCM_HW_PARAM_RATE, &fsl_sai_rate_constraints);
140 @@ -659,7 +720,7 @@ static void fsl_sai_shutdown(struct snd_
141 regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
142
143 if (sai->is_stream_opened[tx]) {
144 - regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
145 + regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE0 | FSL_SAI_CR3_TRCE1, 0);
146 sai->is_stream_opened[tx] = false;
147 }
148 }
149 @@ -687,7 +748,7 @@ static int fsl_sai_dai_probe(struct snd_
150 regmap_write(sai->regmap, FSL_SAI_RCSR, 0);
151
152 regmap_update_bits(sai->regmap, FSL_SAI_TCR1, FSL_SAI_CR1_RFW_MASK,
153 - FSL_SAI_MAXBURST_TX * 2);
154 + sai->soc->fifo_depth - FSL_SAI_MAXBURST_TX);
155 regmap_update_bits(sai->regmap, FSL_SAI_RCR1, FSL_SAI_CR1_RFW_MASK,
156 FSL_SAI_MAXBURST_RX - 1);
157
158 @@ -732,7 +793,8 @@ static struct reg_default fsl_sai_reg_de
159 {FSL_SAI_TCR3, 0},
160 {FSL_SAI_TCR4, 0},
161 {FSL_SAI_TCR5, 0},
162 - {FSL_SAI_TDR, 0},
163 + {FSL_SAI_TDR0, 0},
164 + {FSL_SAI_TDR1, 0},
165 {FSL_SAI_TMR, 0},
166 {FSL_SAI_RCR1, 0},
167 {FSL_SAI_RCR2, 0},
168 @@ -751,7 +813,8 @@ static bool fsl_sai_readable_reg(struct
169 case FSL_SAI_TCR3:
170 case FSL_SAI_TCR4:
171 case FSL_SAI_TCR5:
172 - case FSL_SAI_TFR:
173 + case FSL_SAI_TFR0:
174 + case FSL_SAI_TFR1:
175 case FSL_SAI_TMR:
176 case FSL_SAI_RCSR:
177 case FSL_SAI_RCR1:
178 @@ -759,8 +822,10 @@ static bool fsl_sai_readable_reg(struct
179 case FSL_SAI_RCR3:
180 case FSL_SAI_RCR4:
181 case FSL_SAI_RCR5:
182 - case FSL_SAI_RDR:
183 - case FSL_SAI_RFR:
184 + case FSL_SAI_RDR0:
185 + case FSL_SAI_RDR1:
186 + case FSL_SAI_RFR0:
187 + case FSL_SAI_RFR1:
188 case FSL_SAI_RMR:
189 return true;
190 default:
191 @@ -773,9 +838,12 @@ static bool fsl_sai_volatile_reg(struct
192 switch (reg) {
193 case FSL_SAI_TCSR:
194 case FSL_SAI_RCSR:
195 - case FSL_SAI_TFR:
196 - case FSL_SAI_RFR:
197 - case FSL_SAI_RDR:
198 + case FSL_SAI_TFR0:
199 + case FSL_SAI_TFR1:
200 + case FSL_SAI_RFR0:
201 + case FSL_SAI_RFR1:
202 + case FSL_SAI_RDR0:
203 + case FSL_SAI_RDR1:
204 return true;
205 default:
206 return false;
207 @@ -791,7 +859,8 @@ static bool fsl_sai_writeable_reg(struct
208 case FSL_SAI_TCR3:
209 case FSL_SAI_TCR4:
210 case FSL_SAI_TCR5:
211 - case FSL_SAI_TDR:
212 + case FSL_SAI_TDR0:
213 + case FSL_SAI_TDR1:
214 case FSL_SAI_TMR:
215 case FSL_SAI_RCSR:
216 case FSL_SAI_RCR1:
217 @@ -820,9 +889,19 @@ static const struct regmap_config fsl_sa
218 .cache_type = REGCACHE_FLAT,
219 };
220
221 +static const struct of_device_id fsl_sai_ids[] = {
222 + { .compatible = "fsl,vf610-sai", .data = &fsl_sai_vf610 },
223 + { .compatible = "fsl,imx6sx-sai", .data = &fsl_sai_imx6sx },
224 + { .compatible = "fsl,imx6ul-sai", .data = &fsl_sai_imx6ul },
225 + { .compatible = "fsl,imx7ulp-sai", .data = &fsl_sai_imx7ulp },
226 + { /* sentinel */ }
227 +};
228 +MODULE_DEVICE_TABLE(of, fsl_sai_ids);
229 +
230 static int fsl_sai_probe(struct platform_device *pdev)
231 {
232 struct device_node *np = pdev->dev.of_node;
233 + const struct of_device_id *of_id;
234 struct fsl_sai *sai;
235 struct regmap *gpr;
236 struct resource *res;
237 @@ -837,11 +916,12 @@ static int fsl_sai_probe(struct platform
238
239 sai->pdev = pdev;
240
241 - if (of_device_is_compatible(np, "fsl,imx6sx-sai") ||
242 - of_device_is_compatible(np, "fsl,imx6ul-sai"))
243 - sai->sai_on_imx = true;
244 + of_id = of_match_device(fsl_sai_ids, &pdev->dev);
245 + if (!of_id || !of_id->data)
246 + return -EINVAL;
247
248 sai->is_lsb_first = of_property_read_bool(np, "lsb-first");
249 + sai->soc = of_id->data;
250
251 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
252 base = devm_ioremap_resource(&pdev->dev, res);
253 @@ -873,11 +953,25 @@ static int fsl_sai_probe(struct platform
254 sai->mclk_clk[i] = devm_clk_get(&pdev->dev, tmp);
255 if (IS_ERR(sai->mclk_clk[i])) {
256 dev_err(&pdev->dev, "failed to get mclk%d clock: %ld\n",
257 - i + 1, PTR_ERR(sai->mclk_clk[i]));
258 + i, PTR_ERR(sai->mclk_clk[i]));
259 sai->mclk_clk[i] = NULL;
260 }
261 }
262
263 + /*dataline mask for rx and tx*/
264 + ret = of_property_read_u32_index(np, "fsl,dataline", 0, &sai->dataline[0]);
265 + if (ret)
266 + sai->dataline[0] = 1;
267 +
268 + ret = of_property_read_u32_index(np, "fsl,dataline", 1, &sai->dataline[1]);
269 + if (ret)
270 + sai->dataline[1] = 1;
271 +
272 + if ((sai->dataline[0] & (~sai->soc->dataline)) || sai->dataline[1] & (~sai->soc->dataline)) {
273 + dev_err(&pdev->dev, "dataline setting error, Mask is 0x%x\n", sai->soc->dataline);
274 + return -EINVAL;
275 + }
276 +
277 irq = platform_get_irq(pdev, 0);
278 if (irq < 0) {
279 dev_err(&pdev->dev, "no irq for node %s\n", pdev->name);
280 @@ -936,8 +1030,8 @@ static int fsl_sai_probe(struct platform
281 MCLK_DIR(index));
282 }
283
284 - sai->dma_params_rx.addr = res->start + FSL_SAI_RDR;
285 - sai->dma_params_tx.addr = res->start + FSL_SAI_TDR;
286 + sai->dma_params_rx.addr = res->start + FSL_SAI_RDR0;
287 + sai->dma_params_tx.addr = res->start + FSL_SAI_TDR0;
288 sai->dma_params_rx.maxburst = FSL_SAI_MAXBURST_RX;
289 sai->dma_params_tx.maxburst = FSL_SAI_MAXBURST_TX;
290
291 @@ -950,7 +1044,7 @@ static int fsl_sai_probe(struct platform
292 if (ret)
293 goto err_pm_disable;
294
295 - if (sai->sai_on_imx)
296 + if (sai->soc->imx)
297 ret = imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
298 if (ret)
299 goto err_pm_disable;
300 @@ -996,6 +1090,9 @@ static int fsl_sai_runtime_suspend(struc
301
302 clk_disable_unprepare(sai->bus_clk);
303
304 + if (sai->soc->flags & SAI_FLAG_PMQOS)
305 + pm_qos_remove_request(&sai->pm_qos_req);
306 +
307 regcache_cache_only(sai->regmap, true);
308 regcache_mark_dirty(sai->regmap);
309
310 @@ -1025,6 +1122,10 @@ static int fsl_sai_runtime_resume(struct
311 goto disable_tx_clk;
312 }
313
314 + if (sai->soc->flags & SAI_FLAG_PMQOS)
315 + pm_qos_add_request(&sai->pm_qos_req,
316 + PM_QOS_CPU_DMA_LATENCY, 0);
317 +
318 regcache_cache_only(sai->regmap, false);
319 regmap_write(sai->regmap, FSL_SAI_TCSR, FSL_SAI_CSR_SR);
320 regmap_write(sai->regmap, FSL_SAI_RCSR, FSL_SAI_CSR_SR);
321 --- a/sound/soc/fsl/fsl_sai.h
322 +++ b/sound/soc/fsl/fsl_sai.h
323 @@ -1,11 +1,12 @@
324 /* SPDX-License-Identifier: GPL-2.0 */
325 /*
326 - * Copyright 2012-2013 Freescale Semiconductor, Inc.
327 + * Copyright 2012-2016 Freescale Semiconductor, Inc.
328 */
329
330 #ifndef __FSL_SAI_H
331 #define __FSL_SAI_H
332
333 +#include <linux/pm_qos.h>
334 #include <sound/dmaengine_pcm.h>
335
336 #define FSL_SAI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
337 @@ -20,7 +21,10 @@
338 #define FSL_SAI_TCR3 0x0c /* SAI Transmit Configuration 3 */
339 #define FSL_SAI_TCR4 0x10 /* SAI Transmit Configuration 4 */
340 #define FSL_SAI_TCR5 0x14 /* SAI Transmit Configuration 5 */
341 -#define FSL_SAI_TDR 0x20 /* SAI Transmit Data */
342 +#define FSL_SAI_TDR0 0x20 /* SAI Transmit Data */
343 +#define FSL_SAI_TDR1 0x24 /* SAI Transmit Data */
344 +#define FSL_SAI_TFR0 0x40 /* SAI Transmit FIFO */
345 +#define FSL_SAI_TFR1 0x44 /* SAI Transmit FIFO */
346 #define FSL_SAI_TFR 0x40 /* SAI Transmit FIFO */
347 #define FSL_SAI_TMR 0x60 /* SAI Transmit Mask */
348 #define FSL_SAI_RCSR 0x80 /* SAI Receive Control */
349 @@ -29,7 +33,10 @@
350 #define FSL_SAI_RCR3 0x8c /* SAI Receive Configuration 3 */
351 #define FSL_SAI_RCR4 0x90 /* SAI Receive Configuration 4 */
352 #define FSL_SAI_RCR5 0x94 /* SAI Receive Configuration 5 */
353 -#define FSL_SAI_RDR 0xa0 /* SAI Receive Data */
354 +#define FSL_SAI_RDR0 0xa0 /* SAI Receive Data */
355 +#define FSL_SAI_RDR1 0xa4 /* SAI Receive Data */
356 +#define FSL_SAI_RFR0 0xc0 /* SAI Receive FIFO */
357 +#define FSL_SAI_RFR1 0xc4 /* SAI Receive FIFO */
358 #define FSL_SAI_RFR 0xc0 /* SAI Receive FIFO */
359 #define FSL_SAI_RMR 0xe0 /* SAI Receive Mask */
360
361 @@ -45,6 +52,7 @@
362
363 /* SAI Transmit/Receive Control Register */
364 #define FSL_SAI_CSR_TERE BIT(31)
365 +#define FSL_SAI_CSR_SE BIT(30)
366 #define FSL_SAI_CSR_FR BIT(25)
367 #define FSL_SAI_CSR_SR BIT(24)
368 #define FSL_SAI_CSR_xF_SHIFT 16
369 @@ -81,11 +89,19 @@
370 #define FSL_SAI_CR2_DIV_MASK 0xff
371
372 /* SAI Transmit and Receive Configuration 3 Register */
373 -#define FSL_SAI_CR3_TRCE BIT(16)
374 +#define FSL_SAI_CR3_TRCE0 BIT(16)
375 +#define FSL_SAI_CR3_TRCE1 BIT(17)
376 +#define FSL_SAI_CR3_TRCE(x) (x << 16)
377 #define FSL_SAI_CR3_WDFL(x) (x)
378 #define FSL_SAI_CR3_WDFL_MASK 0x1f
379
380 /* SAI Transmit and Receive Configuration 4 Register */
381 +
382 +#define FSL_SAI_CR4_FCONT BIT(28)
383 +#define FSL_SAI_CR4_FCOMB_SHIFT BIT(26)
384 +#define FSL_SAI_CR4_FCOMB_SOFT BIT(27)
385 +#define FSL_SAI_CR4_FPACK_8 (0x2 << 24)
386 +#define FSL_SAI_CR4_FPACK_16 (0x3 << 24)
387 #define FSL_SAI_CR4_FRSZ(x) (((x) - 1) << 16)
388 #define FSL_SAI_CR4_FRSZ_MASK (0x1f << 16)
389 #define FSL_SAI_CR4_SYWD(x) (((x) - 1) << 8)
390 @@ -126,6 +142,16 @@
391 #define FSL_SAI_MAXBURST_TX 6
392 #define FSL_SAI_MAXBURST_RX 6
393
394 +#define SAI_FLAG_PMQOS BIT(0)
395 +
396 +struct fsl_sai_soc_data {
397 + unsigned int fifo_depth;
398 + unsigned int fifos;
399 + unsigned int dataline;
400 + unsigned int flags;
401 + bool imx;
402 +};
403 +
404 struct fsl_sai {
405 struct platform_device *pdev;
406 struct regmap *regmap;
407 @@ -138,6 +164,7 @@ struct fsl_sai {
408 bool sai_on_imx;
409 bool synchronous[2];
410 bool is_stream_opened[2];
411 + unsigned int dataline[2];
412
413 unsigned int mclk_id[2];
414 unsigned int mclk_streams;
415 @@ -147,6 +174,8 @@ struct fsl_sai {
416 struct snd_soc_dai_driver cpu_dai_drv;
417 struct snd_dmaengine_dai_dma_data dma_params_rx;
418 struct snd_dmaengine_dai_dma_data dma_params_tx;
419 + const struct fsl_sai_soc_data *soc;
420 + struct pm_qos_request pm_qos_req;
421 };
422
423 #define TX 1
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