Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b67f4487 C |
2 | /* |
3 | * ALSA SoC McASP Audio Layer for TI DAVINCI processor | |
4 | * | |
5 | * Multi-channel Audio Serial Port Driver | |
6 | * | |
7 | * Author: Nirmal Pandey <n-pandey@ti.com>, | |
8 | * Suresh Rajashekara <suresh.r@ti.com> | |
9 | * Steve Chen <schen@.mvista.com> | |
10 | * | |
11 | * Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com> | |
12 | * Copyright: (C) 2009 Texas Instruments, India | |
b67f4487 C |
13 | */ |
14 | ||
15 | #include <linux/init.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/device.h> | |
5a0e3ad6 | 18 | #include <linux/slab.h> |
b67f4487 C |
19 | #include <linux/delay.h> |
20 | #include <linux/io.h> | |
ae726e93 | 21 | #include <linux/clk.h> |
10884347 | 22 | #include <linux/pm_runtime.h> |
3e3b8c34 HG |
23 | #include <linux/of.h> |
24 | #include <linux/of_platform.h> | |
25 | #include <linux/of_device.h> | |
9759e7ef | 26 | #include <linux/platform_data/davinci_asp.h> |
a75a053f | 27 | #include <linux/math64.h> |
ca3d9433 | 28 | #include <linux/bitmap.h> |
540f1ba7 | 29 | #include <linux/gpio/driver.h> |
b67f4487 | 30 | |
6479285d | 31 | #include <sound/asoundef.h> |
b67f4487 C |
32 | #include <sound/core.h> |
33 | #include <sound/pcm.h> | |
34 | #include <sound/pcm_params.h> | |
35 | #include <sound/initval.h> | |
36 | #include <sound/soc.h> | |
453c4990 | 37 | #include <sound/dmaengine_pcm.h> |
b67f4487 | 38 | |
f3f9cfa8 | 39 | #include "edma-pcm.h" |
f2055e14 | 40 | #include "sdma-pcm.h" |
b67f4487 C |
41 | #include "davinci-mcasp.h" |
42 | ||
0bf0e8ae PU |
43 | #define MCASP_MAX_AFIFO_DEPTH 64 |
44 | ||
8ca51047 | 45 | #ifdef CONFIG_PM |
1cc0c054 PU |
46 | static u32 context_regs[] = { |
47 | DAVINCI_MCASP_TXFMCTL_REG, | |
48 | DAVINCI_MCASP_RXFMCTL_REG, | |
49 | DAVINCI_MCASP_TXFMT_REG, | |
50 | DAVINCI_MCASP_RXFMT_REG, | |
51 | DAVINCI_MCASP_ACLKXCTL_REG, | |
52 | DAVINCI_MCASP_ACLKRCTL_REG, | |
f114ce60 PU |
53 | DAVINCI_MCASP_AHCLKXCTL_REG, |
54 | DAVINCI_MCASP_AHCLKRCTL_REG, | |
1cc0c054 | 55 | DAVINCI_MCASP_PDIR_REG, |
540f1ba7 | 56 | DAVINCI_MCASP_PFUNC_REG, |
f114ce60 PU |
57 | DAVINCI_MCASP_RXMASK_REG, |
58 | DAVINCI_MCASP_TXMASK_REG, | |
59 | DAVINCI_MCASP_RXTDM_REG, | |
60 | DAVINCI_MCASP_TXTDM_REG, | |
1cc0c054 PU |
61 | }; |
62 | ||
790bb94b | 63 | struct davinci_mcasp_context { |
1cc0c054 | 64 | u32 config_regs[ARRAY_SIZE(context_regs)]; |
f114ce60 PU |
65 | u32 afifo_regs[2]; /* for read/write fifo control registers */ |
66 | u32 *xrsr_regs; /* for serializer configuration */ | |
6afda7f5 | 67 | bool pm_state; |
790bb94b | 68 | }; |
8ca51047 | 69 | #endif |
790bb94b | 70 | |
a75a053f JS |
71 | struct davinci_mcasp_ruledata { |
72 | struct davinci_mcasp *mcasp; | |
73 | int serializers; | |
74 | }; | |
75 | ||
70091a3e | 76 | struct davinci_mcasp { |
453c4990 | 77 | struct snd_dmaengine_dai_dma_data dma_data[2]; |
21400a72 | 78 | void __iomem *base; |
487dce88 | 79 | u32 fifo_base; |
21400a72 | 80 | struct device *dev; |
a7a3324a | 81 | struct snd_pcm_substream *substreams[2]; |
4a11ff26 | 82 | unsigned int dai_fmt; |
21400a72 PU |
83 | |
84 | /* McASP specific data */ | |
85 | int tdm_slots; | |
dd55ff83 JS |
86 | u32 tdm_mask[2]; |
87 | int slot_width; | |
21400a72 | 88 | u8 op_mode; |
bc184549 | 89 | u8 dismod; |
21400a72 PU |
90 | u8 num_serializer; |
91 | u8 *serial_dir; | |
92 | u8 version; | |
8267525c | 93 | u8 bclk_div; |
4dcb5a0b | 94 | int streams; |
a7a3324a | 95 | u32 irq_request[2]; |
9759e7ef | 96 | int dma_request[2]; |
21400a72 | 97 | |
ab8b14b6 JS |
98 | int sysclk_freq; |
99 | bool bclk_master; | |
764958f2 | 100 | u32 auxclk_fs_ratio; |
ab8b14b6 | 101 | |
ca3d9433 PU |
102 | unsigned long pdir; /* Pin direction bitfield */ |
103 | ||
21400a72 PU |
104 | /* McASP FIFO related */ |
105 | u8 txnumevt; | |
106 | u8 rxnumevt; | |
107 | ||
cbc7956c PU |
108 | bool dat_port; |
109 | ||
11277833 PU |
110 | /* Used for comstraint setting on the second stream */ |
111 | u32 channels; | |
112 | ||
540f1ba7 PU |
113 | #ifdef CONFIG_GPIOLIB |
114 | struct gpio_chip gpio_chip; | |
115 | #endif | |
116 | ||
61754717 | 117 | #ifdef CONFIG_PM |
790bb94b | 118 | struct davinci_mcasp_context context; |
21400a72 | 119 | #endif |
a75a053f JS |
120 | |
121 | struct davinci_mcasp_ruledata ruledata[2]; | |
5935a056 | 122 | struct snd_pcm_hw_constraint_list chconstr[2]; |
21400a72 PU |
123 | }; |
124 | ||
f68205a7 PU |
125 | static inline void mcasp_set_bits(struct davinci_mcasp *mcasp, u32 offset, |
126 | u32 val) | |
b67f4487 | 127 | { |
f68205a7 | 128 | void __iomem *reg = mcasp->base + offset; |
b67f4487 C |
129 | __raw_writel(__raw_readl(reg) | val, reg); |
130 | } | |
131 | ||
f68205a7 PU |
132 | static inline void mcasp_clr_bits(struct davinci_mcasp *mcasp, u32 offset, |
133 | u32 val) | |
b67f4487 | 134 | { |
f68205a7 | 135 | void __iomem *reg = mcasp->base + offset; |
b67f4487 C |
136 | __raw_writel((__raw_readl(reg) & ~(val)), reg); |
137 | } | |
138 | ||
f68205a7 PU |
139 | static inline void mcasp_mod_bits(struct davinci_mcasp *mcasp, u32 offset, |
140 | u32 val, u32 mask) | |
b67f4487 | 141 | { |
f68205a7 | 142 | void __iomem *reg = mcasp->base + offset; |
b67f4487 C |
143 | __raw_writel((__raw_readl(reg) & ~mask) | val, reg); |
144 | } | |
145 | ||
f68205a7 PU |
146 | static inline void mcasp_set_reg(struct davinci_mcasp *mcasp, u32 offset, |
147 | u32 val) | |
b67f4487 | 148 | { |
f68205a7 | 149 | __raw_writel(val, mcasp->base + offset); |
b67f4487 C |
150 | } |
151 | ||
f68205a7 | 152 | static inline u32 mcasp_get_reg(struct davinci_mcasp *mcasp, u32 offset) |
b67f4487 | 153 | { |
f68205a7 | 154 | return (u32)__raw_readl(mcasp->base + offset); |
b67f4487 C |
155 | } |
156 | ||
f68205a7 | 157 | static void mcasp_set_ctl_reg(struct davinci_mcasp *mcasp, u32 ctl_reg, u32 val) |
b67f4487 C |
158 | { |
159 | int i = 0; | |
160 | ||
f68205a7 | 161 | mcasp_set_bits(mcasp, ctl_reg, val); |
b67f4487 C |
162 | |
163 | /* programming GBLCTL needs to read back from GBLCTL and verfiy */ | |
164 | /* loop count is to avoid the lock-up */ | |
165 | for (i = 0; i < 1000; i++) { | |
f68205a7 | 166 | if ((mcasp_get_reg(mcasp, ctl_reg) & val) == val) |
b67f4487 C |
167 | break; |
168 | } | |
169 | ||
f68205a7 | 170 | if (i == 1000 && ((mcasp_get_reg(mcasp, ctl_reg) & val) != val)) |
b67f4487 C |
171 | printk(KERN_ERR "GBLCTL write error\n"); |
172 | } | |
173 | ||
4dcb5a0b PU |
174 | static bool mcasp_is_synchronous(struct davinci_mcasp *mcasp) |
175 | { | |
f68205a7 PU |
176 | u32 rxfmctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXFMCTL_REG); |
177 | u32 aclkxctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_ACLKXCTL_REG); | |
4dcb5a0b PU |
178 | |
179 | return !(aclkxctl & TX_ASYNC) && rxfmctl & AFSRE; | |
180 | } | |
181 | ||
ca3d9433 PU |
182 | static inline void mcasp_set_clk_pdir(struct davinci_mcasp *mcasp, bool enable) |
183 | { | |
184 | u32 bit = PIN_BIT_AMUTE; | |
185 | ||
186 | for_each_set_bit_from(bit, &mcasp->pdir, PIN_BIT_AFSR + 1) { | |
187 | if (enable) | |
188 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(bit)); | |
189 | else | |
190 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(bit)); | |
191 | } | |
192 | } | |
193 | ||
194 | static inline void mcasp_set_axr_pdir(struct davinci_mcasp *mcasp, bool enable) | |
195 | { | |
196 | u32 bit; | |
197 | ||
34a2a80f | 198 | for_each_set_bit(bit, &mcasp->pdir, PIN_BIT_AMUTE) { |
ca3d9433 PU |
199 | if (enable) |
200 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(bit)); | |
201 | else | |
202 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(bit)); | |
203 | } | |
204 | } | |
205 | ||
70091a3e | 206 | static void mcasp_start_rx(struct davinci_mcasp *mcasp) |
b67f4487 | 207 | { |
bb372af0 PU |
208 | if (mcasp->rxnumevt) { /* enable FIFO */ |
209 | u32 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; | |
210 | ||
211 | mcasp_clr_bits(mcasp, reg, FIFO_ENABLE); | |
212 | mcasp_set_bits(mcasp, reg, FIFO_ENABLE); | |
213 | } | |
214 | ||
44982735 | 215 | /* Start clocks */ |
f68205a7 PU |
216 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXHCLKRST); |
217 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXCLKRST); | |
4dcb5a0b PU |
218 | /* |
219 | * When ASYNC == 0 the transmit and receive sections operate | |
220 | * synchronously from the transmit clock and frame sync. We need to make | |
221 | * sure that the TX signlas are enabled when starting reception. | |
222 | */ | |
223 | if (mcasp_is_synchronous(mcasp)) { | |
f68205a7 PU |
224 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXHCLKRST); |
225 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXCLKRST); | |
34a2a80f | 226 | mcasp_set_clk_pdir(mcasp, true); |
4dcb5a0b PU |
227 | } |
228 | ||
44982735 | 229 | /* Activate serializer(s) */ |
1003c27a | 230 | mcasp_set_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF); |
f68205a7 | 231 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXSERCLR); |
44982735 | 232 | /* Release RX state machine */ |
f68205a7 | 233 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXSMRST); |
44982735 | 234 | /* Release Frame Sync generator */ |
f68205a7 | 235 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXFSRST); |
4dcb5a0b | 236 | if (mcasp_is_synchronous(mcasp)) |
f68205a7 | 237 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXFSRST); |
a7a3324a MLC |
238 | |
239 | /* enable receive IRQs */ | |
240 | mcasp_set_bits(mcasp, DAVINCI_MCASP_EVTCTLR_REG, | |
241 | mcasp->irq_request[SNDRV_PCM_STREAM_CAPTURE]); | |
b67f4487 C |
242 | } |
243 | ||
70091a3e | 244 | static void mcasp_start_tx(struct davinci_mcasp *mcasp) |
b67f4487 | 245 | { |
6a99fb5f C |
246 | u32 cnt; |
247 | ||
bb372af0 PU |
248 | if (mcasp->txnumevt) { /* enable FIFO */ |
249 | u32 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; | |
250 | ||
251 | mcasp_clr_bits(mcasp, reg, FIFO_ENABLE); | |
252 | mcasp_set_bits(mcasp, reg, FIFO_ENABLE); | |
253 | } | |
254 | ||
36bcecd0 | 255 | /* Start clocks */ |
f68205a7 PU |
256 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXHCLKRST); |
257 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXCLKRST); | |
ca3d9433 PU |
258 | mcasp_set_clk_pdir(mcasp, true); |
259 | ||
36bcecd0 | 260 | /* Activate serializer(s) */ |
1003c27a | 261 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF); |
f68205a7 | 262 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXSERCLR); |
b67f4487 | 263 | |
36bcecd0 | 264 | /* wait for XDATA to be cleared */ |
6a99fb5f | 265 | cnt = 0; |
e2a0c9fa PU |
266 | while ((mcasp_get_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG) & XRDATA) && |
267 | (cnt < 100000)) | |
6a99fb5f C |
268 | cnt++; |
269 | ||
ca3d9433 PU |
270 | mcasp_set_axr_pdir(mcasp, true); |
271 | ||
36bcecd0 PU |
272 | /* Release TX state machine */ |
273 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXSMRST); | |
274 | /* Release Frame Sync generator */ | |
275 | mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXFSRST); | |
a7a3324a MLC |
276 | |
277 | /* enable transmit IRQs */ | |
278 | mcasp_set_bits(mcasp, DAVINCI_MCASP_EVTCTLX_REG, | |
279 | mcasp->irq_request[SNDRV_PCM_STREAM_PLAYBACK]); | |
b67f4487 C |
280 | } |
281 | ||
70091a3e | 282 | static void davinci_mcasp_start(struct davinci_mcasp *mcasp, int stream) |
b67f4487 | 283 | { |
4dcb5a0b PU |
284 | mcasp->streams++; |
285 | ||
bb372af0 | 286 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
70091a3e | 287 | mcasp_start_tx(mcasp); |
bb372af0 | 288 | else |
70091a3e | 289 | mcasp_start_rx(mcasp); |
b67f4487 C |
290 | } |
291 | ||
70091a3e | 292 | static void mcasp_stop_rx(struct davinci_mcasp *mcasp) |
b67f4487 | 293 | { |
a7a3324a MLC |
294 | /* disable IRQ sources */ |
295 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_EVTCTLR_REG, | |
296 | mcasp->irq_request[SNDRV_PCM_STREAM_CAPTURE]); | |
297 | ||
4dcb5a0b PU |
298 | /* |
299 | * In synchronous mode stop the TX clocks if no other stream is | |
300 | * running | |
301 | */ | |
ca3d9433 PU |
302 | if (mcasp_is_synchronous(mcasp) && !mcasp->streams) { |
303 | mcasp_set_clk_pdir(mcasp, false); | |
f68205a7 | 304 | mcasp_set_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, 0); |
ca3d9433 | 305 | } |
4dcb5a0b | 306 | |
f68205a7 PU |
307 | mcasp_set_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, 0); |
308 | mcasp_set_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF); | |
0380866a PU |
309 | |
310 | if (mcasp->rxnumevt) { /* disable FIFO */ | |
311 | u32 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; | |
312 | ||
313 | mcasp_clr_bits(mcasp, reg, FIFO_ENABLE); | |
314 | } | |
b67f4487 C |
315 | } |
316 | ||
70091a3e | 317 | static void mcasp_stop_tx(struct davinci_mcasp *mcasp) |
b67f4487 | 318 | { |
4dcb5a0b PU |
319 | u32 val = 0; |
320 | ||
a7a3324a MLC |
321 | /* disable IRQ sources */ |
322 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_EVTCTLX_REG, | |
323 | mcasp->irq_request[SNDRV_PCM_STREAM_PLAYBACK]); | |
324 | ||
4dcb5a0b PU |
325 | /* |
326 | * In synchronous mode keep TX clocks running if the capture stream is | |
327 | * still running. | |
328 | */ | |
329 | if (mcasp_is_synchronous(mcasp) && mcasp->streams) | |
330 | val = TXHCLKRST | TXCLKRST | TXFSRST; | |
ca3d9433 PU |
331 | else |
332 | mcasp_set_clk_pdir(mcasp, false); | |
333 | ||
4dcb5a0b | 334 | |
f68205a7 PU |
335 | mcasp_set_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, val); |
336 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF); | |
0380866a PU |
337 | |
338 | if (mcasp->txnumevt) { /* disable FIFO */ | |
339 | u32 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; | |
340 | ||
341 | mcasp_clr_bits(mcasp, reg, FIFO_ENABLE); | |
342 | } | |
ca3d9433 PU |
343 | |
344 | mcasp_set_axr_pdir(mcasp, false); | |
b67f4487 C |
345 | } |
346 | ||
70091a3e | 347 | static void davinci_mcasp_stop(struct davinci_mcasp *mcasp, int stream) |
b67f4487 | 348 | { |
4dcb5a0b PU |
349 | mcasp->streams--; |
350 | ||
0380866a | 351 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
70091a3e | 352 | mcasp_stop_tx(mcasp); |
0380866a | 353 | else |
70091a3e | 354 | mcasp_stop_rx(mcasp); |
b67f4487 C |
355 | } |
356 | ||
a7a3324a MLC |
357 | static irqreturn_t davinci_mcasp_tx_irq_handler(int irq, void *data) |
358 | { | |
359 | struct davinci_mcasp *mcasp = (struct davinci_mcasp *)data; | |
360 | struct snd_pcm_substream *substream; | |
361 | u32 irq_mask = mcasp->irq_request[SNDRV_PCM_STREAM_PLAYBACK]; | |
362 | u32 handled_mask = 0; | |
363 | u32 stat; | |
364 | ||
365 | stat = mcasp_get_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG); | |
366 | if (stat & XUNDRN & irq_mask) { | |
367 | dev_warn(mcasp->dev, "Transmit buffer underflow\n"); | |
368 | handled_mask |= XUNDRN; | |
369 | ||
370 | substream = mcasp->substreams[SNDRV_PCM_STREAM_PLAYBACK]; | |
dae35d1f TI |
371 | if (substream) |
372 | snd_pcm_stop_xrun(substream); | |
a7a3324a MLC |
373 | } |
374 | ||
375 | if (!handled_mask) | |
376 | dev_warn(mcasp->dev, "unhandled tx event. txstat: 0x%08x\n", | |
377 | stat); | |
378 | ||
379 | if (stat & XRERR) | |
380 | handled_mask |= XRERR; | |
381 | ||
382 | /* Ack the handled event only */ | |
383 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG, handled_mask); | |
384 | ||
385 | return IRQ_RETVAL(handled_mask); | |
386 | } | |
387 | ||
388 | static irqreturn_t davinci_mcasp_rx_irq_handler(int irq, void *data) | |
389 | { | |
390 | struct davinci_mcasp *mcasp = (struct davinci_mcasp *)data; | |
391 | struct snd_pcm_substream *substream; | |
392 | u32 irq_mask = mcasp->irq_request[SNDRV_PCM_STREAM_CAPTURE]; | |
393 | u32 handled_mask = 0; | |
394 | u32 stat; | |
395 | ||
396 | stat = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG); | |
397 | if (stat & ROVRN & irq_mask) { | |
398 | dev_warn(mcasp->dev, "Receive buffer overflow\n"); | |
399 | handled_mask |= ROVRN; | |
400 | ||
401 | substream = mcasp->substreams[SNDRV_PCM_STREAM_CAPTURE]; | |
dae35d1f TI |
402 | if (substream) |
403 | snd_pcm_stop_xrun(substream); | |
a7a3324a MLC |
404 | } |
405 | ||
406 | if (!handled_mask) | |
407 | dev_warn(mcasp->dev, "unhandled rx event. rxstat: 0x%08x\n", | |
408 | stat); | |
409 | ||
410 | if (stat & XRERR) | |
411 | handled_mask |= XRERR; | |
412 | ||
413 | /* Ack the handled event only */ | |
414 | mcasp_set_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG, handled_mask); | |
415 | ||
416 | return IRQ_RETVAL(handled_mask); | |
417 | } | |
418 | ||
5a1b8a80 PU |
419 | static irqreturn_t davinci_mcasp_common_irq_handler(int irq, void *data) |
420 | { | |
421 | struct davinci_mcasp *mcasp = (struct davinci_mcasp *)data; | |
422 | irqreturn_t ret = IRQ_NONE; | |
423 | ||
424 | if (mcasp->substreams[SNDRV_PCM_STREAM_PLAYBACK]) | |
425 | ret = davinci_mcasp_tx_irq_handler(irq, data); | |
426 | ||
427 | if (mcasp->substreams[SNDRV_PCM_STREAM_CAPTURE]) | |
428 | ret |= davinci_mcasp_rx_irq_handler(irq, data); | |
429 | ||
430 | return ret; | |
431 | } | |
432 | ||
b67f4487 C |
433 | static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, |
434 | unsigned int fmt) | |
435 | { | |
70091a3e | 436 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); |
1d17a04e | 437 | int ret = 0; |
6dfa9a4e | 438 | u32 data_delay; |
83f12503 | 439 | bool fs_pol_rising; |
ffd950f7 | 440 | bool inv_fs = false; |
b67f4487 | 441 | |
4a11ff26 PU |
442 | if (!fmt) |
443 | return 0; | |
444 | ||
1d17a04e | 445 | pm_runtime_get_sync(mcasp->dev); |
5296cf2d | 446 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
188edc59 PU |
447 | case SND_SOC_DAIFMT_DSP_A: |
448 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); | |
449 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); | |
188edc59 PU |
450 | /* 1st data bit occur one ACLK cycle after the frame sync */ |
451 | data_delay = 1; | |
452 | break; | |
5296cf2d DM |
453 | case SND_SOC_DAIFMT_DSP_B: |
454 | case SND_SOC_DAIFMT_AC97: | |
f68205a7 PU |
455 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); |
456 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); | |
6dfa9a4e PU |
457 | /* No delay after FS */ |
458 | data_delay = 0; | |
5296cf2d | 459 | break; |
ffd950f7 | 460 | case SND_SOC_DAIFMT_I2S: |
5296cf2d | 461 | /* configure a full-word SYNC pulse (LRCLK) */ |
f68205a7 PU |
462 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); |
463 | mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); | |
6dfa9a4e PU |
464 | /* 1st data bit occur one ACLK cycle after the frame sync */ |
465 | data_delay = 1; | |
ffd950f7 PU |
466 | /* FS need to be inverted */ |
467 | inv_fs = true; | |
5296cf2d | 468 | break; |
423761e0 PU |
469 | case SND_SOC_DAIFMT_LEFT_J: |
470 | /* configure a full-word SYNC pulse (LRCLK) */ | |
471 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); | |
472 | mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); | |
473 | /* No delay after FS */ | |
474 | data_delay = 0; | |
475 | break; | |
ffd950f7 PU |
476 | default: |
477 | ret = -EINVAL; | |
478 | goto out; | |
5296cf2d DM |
479 | } |
480 | ||
6dfa9a4e PU |
481 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, FSXDLY(data_delay), |
482 | FSXDLY(3)); | |
483 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, FSRDLY(data_delay), | |
484 | FSRDLY(3)); | |
485 | ||
b67f4487 C |
486 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
487 | case SND_SOC_DAIFMT_CBS_CFS: | |
488 | /* codec is clock and frame slave */ | |
f68205a7 PU |
489 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); |
490 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE); | |
b67f4487 | 491 | |
f68205a7 PU |
492 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); |
493 | mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE); | |
b67f4487 | 494 | |
ca3d9433 PU |
495 | /* BCLK */ |
496 | set_bit(PIN_BIT_ACLKX, &mcasp->pdir); | |
497 | set_bit(PIN_BIT_ACLKR, &mcasp->pdir); | |
498 | /* Frame Sync */ | |
499 | set_bit(PIN_BIT_AFSX, &mcasp->pdir); | |
500 | set_bit(PIN_BIT_AFSR, &mcasp->pdir); | |
501 | ||
ab8b14b6 | 502 | mcasp->bclk_master = 1; |
b67f4487 | 503 | break; |
226e2f1b PU |
504 | case SND_SOC_DAIFMT_CBS_CFM: |
505 | /* codec is clock slave and frame master */ | |
506 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); | |
507 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE); | |
508 | ||
509 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); | |
510 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE); | |
511 | ||
ca3d9433 PU |
512 | /* BCLK */ |
513 | set_bit(PIN_BIT_ACLKX, &mcasp->pdir); | |
514 | set_bit(PIN_BIT_ACLKR, &mcasp->pdir); | |
515 | /* Frame Sync */ | |
516 | clear_bit(PIN_BIT_AFSX, &mcasp->pdir); | |
517 | clear_bit(PIN_BIT_AFSR, &mcasp->pdir); | |
518 | ||
226e2f1b PU |
519 | mcasp->bclk_master = 1; |
520 | break; | |
517ee6cf C |
521 | case SND_SOC_DAIFMT_CBM_CFS: |
522 | /* codec is clock master and frame slave */ | |
f68205a7 PU |
523 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); |
524 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE); | |
517ee6cf | 525 | |
f68205a7 PU |
526 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); |
527 | mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE); | |
517ee6cf | 528 | |
ca3d9433 PU |
529 | /* BCLK */ |
530 | clear_bit(PIN_BIT_ACLKX, &mcasp->pdir); | |
531 | clear_bit(PIN_BIT_ACLKR, &mcasp->pdir); | |
532 | /* Frame Sync */ | |
533 | set_bit(PIN_BIT_AFSX, &mcasp->pdir); | |
534 | set_bit(PIN_BIT_AFSR, &mcasp->pdir); | |
535 | ||
ab8b14b6 | 536 | mcasp->bclk_master = 0; |
517ee6cf | 537 | break; |
b67f4487 C |
538 | case SND_SOC_DAIFMT_CBM_CFM: |
539 | /* codec is clock and frame master */ | |
f68205a7 PU |
540 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); |
541 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE); | |
b67f4487 | 542 | |
f68205a7 PU |
543 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); |
544 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE); | |
b67f4487 | 545 | |
ca3d9433 PU |
546 | /* BCLK */ |
547 | clear_bit(PIN_BIT_ACLKX, &mcasp->pdir); | |
548 | clear_bit(PIN_BIT_ACLKR, &mcasp->pdir); | |
549 | /* Frame Sync */ | |
550 | clear_bit(PIN_BIT_AFSX, &mcasp->pdir); | |
551 | clear_bit(PIN_BIT_AFSR, &mcasp->pdir); | |
552 | ||
ab8b14b6 | 553 | mcasp->bclk_master = 0; |
b67f4487 | 554 | break; |
b67f4487 | 555 | default: |
1d17a04e PU |
556 | ret = -EINVAL; |
557 | goto out; | |
b67f4487 C |
558 | } |
559 | ||
560 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
561 | case SND_SOC_DAIFMT_IB_NF: | |
f68205a7 | 562 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); |
74ddd8c4 | 563 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); |
83f12503 | 564 | fs_pol_rising = true; |
b67f4487 | 565 | break; |
b67f4487 | 566 | case SND_SOC_DAIFMT_NB_IF: |
f68205a7 | 567 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); |
74ddd8c4 | 568 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); |
83f12503 | 569 | fs_pol_rising = false; |
b67f4487 | 570 | break; |
b67f4487 | 571 | case SND_SOC_DAIFMT_IB_IF: |
f68205a7 | 572 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); |
74ddd8c4 | 573 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); |
83f12503 | 574 | fs_pol_rising = false; |
b67f4487 | 575 | break; |
b67f4487 | 576 | case SND_SOC_DAIFMT_NB_NF: |
f68205a7 | 577 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); |
f68205a7 | 578 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); |
83f12503 | 579 | fs_pol_rising = true; |
b67f4487 | 580 | break; |
b67f4487 | 581 | default: |
1d17a04e | 582 | ret = -EINVAL; |
83f12503 PU |
583 | goto out; |
584 | } | |
585 | ||
ffd950f7 PU |
586 | if (inv_fs) |
587 | fs_pol_rising = !fs_pol_rising; | |
588 | ||
83f12503 PU |
589 | if (fs_pol_rising) { |
590 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); | |
591 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); | |
592 | } else { | |
593 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); | |
594 | mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); | |
b67f4487 | 595 | } |
4a11ff26 PU |
596 | |
597 | mcasp->dai_fmt = fmt; | |
1d17a04e | 598 | out: |
6afda7f5 | 599 | pm_runtime_put(mcasp->dev); |
1d17a04e | 600 | return ret; |
b67f4487 C |
601 | } |
602 | ||
226e73e2 | 603 | static int __davinci_mcasp_set_clkdiv(struct davinci_mcasp *mcasp, int div_id, |
8813543e | 604 | int div, bool explicit) |
4ed8c9b7 | 605 | { |
6afda7f5 | 606 | pm_runtime_get_sync(mcasp->dev); |
4ed8c9b7 | 607 | switch (div_id) { |
20d4b107 | 608 | case MCASP_CLKDIV_AUXCLK: /* MCLK divider */ |
f68205a7 | 609 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, |
4ed8c9b7 | 610 | AHCLKXDIV(div - 1), AHCLKXDIV_MASK); |
f68205a7 | 611 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG, |
4ed8c9b7 DM |
612 | AHCLKRDIV(div - 1), AHCLKRDIV_MASK); |
613 | break; | |
614 | ||
20d4b107 | 615 | case MCASP_CLKDIV_BCLK: /* BCLK divider */ |
f68205a7 | 616 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, |
4ed8c9b7 | 617 | ACLKXDIV(div - 1), ACLKXDIV_MASK); |
f68205a7 | 618 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, |
4ed8c9b7 | 619 | ACLKRDIV(div - 1), ACLKRDIV_MASK); |
8813543e JS |
620 | if (explicit) |
621 | mcasp->bclk_div = div; | |
4ed8c9b7 DM |
622 | break; |
623 | ||
20d4b107 PU |
624 | case MCASP_CLKDIV_BCLK_FS_RATIO: |
625 | /* | |
14a998be JS |
626 | * BCLK/LRCLK ratio descries how many bit-clock cycles |
627 | * fit into one frame. The clock ratio is given for a | |
628 | * full period of data (for I2S format both left and | |
629 | * right channels), so it has to be divided by number | |
630 | * of tdm-slots (for I2S - divided by 2). | |
631 | * Instead of storing this ratio, we calculate a new | |
632 | * tdm_slot width by dividing the the ratio by the | |
633 | * number of configured tdm slots. | |
634 | */ | |
635 | mcasp->slot_width = div / mcasp->tdm_slots; | |
636 | if (div % mcasp->tdm_slots) | |
637 | dev_warn(mcasp->dev, | |
638 | "%s(): BCLK/LRCLK %d is not divisible by %d tdm slots", | |
639 | __func__, div, mcasp->tdm_slots); | |
1b3bc060 DM |
640 | break; |
641 | ||
4ed8c9b7 DM |
642 | default: |
643 | return -EINVAL; | |
644 | } | |
645 | ||
6afda7f5 | 646 | pm_runtime_put(mcasp->dev); |
4ed8c9b7 DM |
647 | return 0; |
648 | } | |
649 | ||
8813543e JS |
650 | static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, |
651 | int div) | |
652 | { | |
226e73e2 PU |
653 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); |
654 | ||
655 | return __davinci_mcasp_set_clkdiv(mcasp, div_id, div, 1); | |
8813543e JS |
656 | } |
657 | ||
5b66aa2d DM |
658 | static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
659 | unsigned int freq, int dir) | |
660 | { | |
70091a3e | 661 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); |
5b66aa2d | 662 | |
6afda7f5 | 663 | pm_runtime_get_sync(mcasp->dev); |
5b66aa2d | 664 | if (dir == SND_SOC_CLOCK_OUT) { |
f68205a7 PU |
665 | mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE); |
666 | mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE); | |
ca3d9433 | 667 | set_bit(PIN_BIT_AHCLKX, &mcasp->pdir); |
5b66aa2d | 668 | } else { |
f68205a7 PU |
669 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE); |
670 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE); | |
ca3d9433 | 671 | clear_bit(PIN_BIT_AHCLKX, &mcasp->pdir); |
5b66aa2d DM |
672 | } |
673 | ||
ab8b14b6 JS |
674 | mcasp->sysclk_freq = freq; |
675 | ||
6afda7f5 | 676 | pm_runtime_put(mcasp->dev); |
5b66aa2d DM |
677 | return 0; |
678 | } | |
679 | ||
dd55ff83 JS |
680 | /* All serializers must have equal number of channels */ |
681 | static int davinci_mcasp_ch_constraint(struct davinci_mcasp *mcasp, int stream, | |
682 | int serializers) | |
683 | { | |
684 | struct snd_pcm_hw_constraint_list *cl = &mcasp->chconstr[stream]; | |
685 | unsigned int *list = (unsigned int *) cl->list; | |
686 | int slots = mcasp->tdm_slots; | |
687 | int i, count = 0; | |
688 | ||
689 | if (mcasp->tdm_mask[stream]) | |
690 | slots = hweight32(mcasp->tdm_mask[stream]); | |
691 | ||
e4798d26 | 692 | for (i = 1; i <= slots; i++) |
dd55ff83 JS |
693 | list[count++] = i; |
694 | ||
695 | for (i = 2; i <= serializers; i++) | |
696 | list[count++] = i*slots; | |
697 | ||
698 | cl->count = count; | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int davinci_mcasp_set_ch_constraints(struct davinci_mcasp *mcasp) | |
704 | { | |
705 | int rx_serializers = 0, tx_serializers = 0, ret, i; | |
706 | ||
707 | for (i = 0; i < mcasp->num_serializer; i++) | |
708 | if (mcasp->serial_dir[i] == TX_MODE) | |
709 | tx_serializers++; | |
710 | else if (mcasp->serial_dir[i] == RX_MODE) | |
711 | rx_serializers++; | |
712 | ||
713 | ret = davinci_mcasp_ch_constraint(mcasp, SNDRV_PCM_STREAM_PLAYBACK, | |
714 | tx_serializers); | |
715 | if (ret) | |
716 | return ret; | |
717 | ||
718 | ret = davinci_mcasp_ch_constraint(mcasp, SNDRV_PCM_STREAM_CAPTURE, | |
719 | rx_serializers); | |
720 | ||
721 | return ret; | |
722 | } | |
723 | ||
724 | ||
725 | static int davinci_mcasp_set_tdm_slot(struct snd_soc_dai *dai, | |
726 | unsigned int tx_mask, | |
727 | unsigned int rx_mask, | |
728 | int slots, int slot_width) | |
729 | { | |
730 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); | |
731 | ||
732 | dev_dbg(mcasp->dev, | |
733 | "%s() tx_mask 0x%08x rx_mask 0x%08x slots %d width %d\n", | |
734 | __func__, tx_mask, rx_mask, slots, slot_width); | |
735 | ||
736 | if (tx_mask >= (1<<slots) || rx_mask >= (1<<slots)) { | |
737 | dev_err(mcasp->dev, | |
738 | "Bad tdm mask tx: 0x%08x rx: 0x%08x slots %d\n", | |
739 | tx_mask, rx_mask, slots); | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
743 | if (slot_width && | |
744 | (slot_width < 8 || slot_width > 32 || slot_width % 4 != 0)) { | |
745 | dev_err(mcasp->dev, "%s: Unsupported slot_width %d\n", | |
746 | __func__, slot_width); | |
747 | return -EINVAL; | |
748 | } | |
749 | ||
750 | mcasp->tdm_slots = slots; | |
1bdd5932 AD |
751 | mcasp->tdm_mask[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask; |
752 | mcasp->tdm_mask[SNDRV_PCM_STREAM_CAPTURE] = rx_mask; | |
dd55ff83 JS |
753 | mcasp->slot_width = slot_width; |
754 | ||
755 | return davinci_mcasp_set_ch_constraints(mcasp); | |
756 | } | |
757 | ||
70091a3e | 758 | static int davinci_config_channel_size(struct davinci_mcasp *mcasp, |
14a998be | 759 | int sample_width) |
b67f4487 | 760 | { |
ba764b3d | 761 | u32 fmt; |
14a998be JS |
762 | u32 tx_rotate = (sample_width / 4) & 0x7; |
763 | u32 mask = (1ULL << sample_width) - 1; | |
764 | u32 slot_width = sample_width; | |
765 | ||
fe0a29e1 PU |
766 | /* |
767 | * For captured data we should not rotate, inversion and masking is | |
768 | * enoguh to get the data to the right position: | |
769 | * Format data from bus after reverse (XRBUF) | |
770 | * S16_LE: |LSB|MSB|xxx|xxx| |xxx|xxx|MSB|LSB| | |
771 | * S24_3LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB| | |
772 | * S24_LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB| | |
773 | * S32_LE: |LSB|DAT|DAT|MSB| |MSB|DAT|DAT|LSB| | |
774 | */ | |
775 | u32 rx_rotate = 0; | |
b67f4487 | 776 | |
1b3bc060 | 777 | /* |
14a998be JS |
778 | * Setting the tdm slot width either with set_clkdiv() or |
779 | * set_tdm_slot() allows us to for example send 32 bits per | |
780 | * channel to the codec, while only 16 of them carry audio | |
781 | * payload. | |
1b3bc060 | 782 | */ |
14a998be | 783 | if (mcasp->slot_width) { |
d742b925 | 784 | /* |
14a998be JS |
785 | * When we have more bclk then it is needed for the |
786 | * data, we need to use the rotation to move the | |
787 | * received samples to have correct alignment. | |
d742b925 | 788 | */ |
14a998be JS |
789 | slot_width = mcasp->slot_width; |
790 | rx_rotate = (slot_width - sample_width) / 4; | |
d742b925 | 791 | } |
1b3bc060 | 792 | |
ba764b3d | 793 | /* mapping of the XSSZ bit-field as described in the datasheet */ |
14a998be | 794 | fmt = (slot_width >> 1) - 1; |
b67f4487 | 795 | |
70091a3e | 796 | if (mcasp->op_mode != DAVINCI_MCASP_DIT_MODE) { |
f68205a7 PU |
797 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, RXSSZ(fmt), |
798 | RXSSZ(0x0F)); | |
799 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXSSZ(fmt), | |
800 | TXSSZ(0x0F)); | |
801 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXROT(tx_rotate), | |
802 | TXROT(7)); | |
803 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, RXROT(rx_rotate), | |
804 | RXROT(7)); | |
805 | mcasp_set_reg(mcasp, DAVINCI_MCASP_RXMASK_REG, mask); | |
f5023af6 YY |
806 | } |
807 | ||
f68205a7 | 808 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXMASK_REG, mask); |
0c31cf3e | 809 | |
b67f4487 C |
810 | return 0; |
811 | } | |
812 | ||
662ffae9 | 813 | static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream, |
dd093a0f | 814 | int period_words, int channels) |
b67f4487 | 815 | { |
5f04c603 | 816 | struct snd_dmaengine_dai_dma_data *dma_data = &mcasp->dma_data[stream]; |
b67f4487 | 817 | int i; |
6a99fb5f C |
818 | u8 tx_ser = 0; |
819 | u8 rx_ser = 0; | |
70091a3e | 820 | u8 slots = mcasp->tdm_slots; |
2952b27e | 821 | u8 max_active_serializers = (channels + slots - 1) / slots; |
72383192 | 822 | int active_serializers, numevt; |
487dce88 | 823 | u32 reg; |
b67f4487 | 824 | /* Default configuration */ |
40448e5e | 825 | if (mcasp->version < MCASP_VERSION_3) |
f68205a7 | 826 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PWREMUMGT_REG, MCASP_SOFT); |
b67f4487 | 827 | |
b67f4487 | 828 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
f68205a7 PU |
829 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF); |
830 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_XEVTCTL_REG, TXDATADMADIS); | |
b67f4487 | 831 | } else { |
f68205a7 PU |
832 | mcasp_set_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF); |
833 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_REVTCTL_REG, RXDATADMADIS); | |
b67f4487 C |
834 | } |
835 | ||
70091a3e | 836 | for (i = 0; i < mcasp->num_serializer; i++) { |
f68205a7 PU |
837 | mcasp_set_bits(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i), |
838 | mcasp->serial_dir[i]); | |
70091a3e | 839 | if (mcasp->serial_dir[i] == TX_MODE && |
2952b27e | 840 | tx_ser < max_active_serializers) { |
19db62ea | 841 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i), |
bc184549 | 842 | mcasp->dismod, DISMOD_MASK); |
ca3d9433 | 843 | set_bit(PIN_BIT_AXR(i), &mcasp->pdir); |
6a99fb5f | 844 | tx_ser++; |
70091a3e | 845 | } else if (mcasp->serial_dir[i] == RX_MODE && |
2952b27e | 846 | rx_ser < max_active_serializers) { |
ca3d9433 | 847 | clear_bit(PIN_BIT_AXR(i), &mcasp->pdir); |
6a99fb5f | 848 | rx_ser++; |
5dd17a3c PU |
849 | } else { |
850 | /* Inactive or unused pin, set it to inactive */ | |
f68205a7 PU |
851 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i), |
852 | SRMOD_INACTIVE, SRMOD_MASK); | |
5dd17a3c PU |
853 | /* If unused, set DISMOD for the pin */ |
854 | if (mcasp->serial_dir[i] != INACTIVE_MODE) | |
855 | mcasp_mod_bits(mcasp, | |
856 | DAVINCI_MCASP_XRSRCTL_REG(i), | |
857 | mcasp->dismod, DISMOD_MASK); | |
ca3d9433 | 858 | clear_bit(PIN_BIT_AXR(i), &mcasp->pdir); |
6a99fb5f C |
859 | } |
860 | } | |
861 | ||
0bf0e8ae PU |
862 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
863 | active_serializers = tx_ser; | |
864 | numevt = mcasp->txnumevt; | |
865 | reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; | |
866 | } else { | |
867 | active_serializers = rx_ser; | |
868 | numevt = mcasp->rxnumevt; | |
869 | reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; | |
870 | } | |
ecf327c7 | 871 | |
0bf0e8ae | 872 | if (active_serializers < max_active_serializers) { |
70091a3e | 873 | dev_warn(mcasp->dev, "stream has more channels (%d) than are " |
0bf0e8ae PU |
874 | "enabled in mcasp (%d)\n", channels, |
875 | active_serializers * slots); | |
ecf327c7 DM |
876 | return -EINVAL; |
877 | } | |
878 | ||
0bf0e8ae | 879 | /* AFIFO is not in use */ |
5f04c603 PU |
880 | if (!numevt) { |
881 | /* Configure the burst size for platform drivers */ | |
33445643 PU |
882 | if (active_serializers > 1) { |
883 | /* | |
884 | * If more than one serializers are in use we have one | |
885 | * DMA request to provide data for all serializers. | |
886 | * For example if three serializers are enabled the DMA | |
887 | * need to transfer three words per DMA request. | |
888 | */ | |
33445643 PU |
889 | dma_data->maxburst = active_serializers; |
890 | } else { | |
33445643 PU |
891 | dma_data->maxburst = 0; |
892 | } | |
0bf0e8ae | 893 | return 0; |
5f04c603 | 894 | } |
6a99fb5f | 895 | |
dd093a0f PU |
896 | if (period_words % active_serializers) { |
897 | dev_err(mcasp->dev, "Invalid combination of period words and " | |
898 | "active serializers: %d, %d\n", period_words, | |
899 | active_serializers); | |
900 | return -EINVAL; | |
901 | } | |
902 | ||
903 | /* | |
904 | * Calculate the optimal AFIFO depth for platform side: | |
905 | * The number of words for numevt need to be in steps of active | |
906 | * serializers. | |
907 | */ | |
72383192 PU |
908 | numevt = (numevt / active_serializers) * active_serializers; |
909 | ||
dd093a0f PU |
910 | while (period_words % numevt && numevt > 0) |
911 | numevt -= active_serializers; | |
912 | if (numevt <= 0) | |
0bf0e8ae | 913 | numevt = active_serializers; |
487dce88 | 914 | |
0bf0e8ae PU |
915 | mcasp_mod_bits(mcasp, reg, active_serializers, NUMDMA_MASK); |
916 | mcasp_mod_bits(mcasp, reg, NUMEVT(numevt), NUMEVT_MASK); | |
2952b27e | 917 | |
5f04c603 | 918 | /* Configure the burst size for platform drivers */ |
33445643 PU |
919 | if (numevt == 1) |
920 | numevt = 0; | |
5f04c603 PU |
921 | dma_data->maxburst = numevt; |
922 | ||
2952b27e | 923 | return 0; |
b67f4487 C |
924 | } |
925 | ||
18a4f557 MLC |
926 | static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream, |
927 | int channels) | |
b67f4487 C |
928 | { |
929 | int i, active_slots; | |
18a4f557 MLC |
930 | int total_slots; |
931 | int active_serializers; | |
b67f4487 | 932 | u32 mask = 0; |
cbc7956c | 933 | u32 busel = 0; |
b67f4487 | 934 | |
18a4f557 MLC |
935 | total_slots = mcasp->tdm_slots; |
936 | ||
937 | /* | |
938 | * If more than one serializer is needed, then use them with | |
dd55ff83 JS |
939 | * all the specified tdm_slots. Otherwise, one serializer can |
940 | * cope with the transaction using just as many slots as there | |
941 | * are channels in the stream. | |
18a4f557 | 942 | */ |
dd55ff83 JS |
943 | if (mcasp->tdm_mask[stream]) { |
944 | active_slots = hweight32(mcasp->tdm_mask[stream]); | |
945 | active_serializers = (channels + active_slots - 1) / | |
946 | active_slots; | |
fd14f443 | 947 | if (active_serializers == 1) |
dd55ff83 | 948 | active_slots = channels; |
fd14f443 PU |
949 | for (i = 0; i < total_slots; i++) { |
950 | if ((1 << i) & mcasp->tdm_mask[stream]) { | |
951 | mask |= (1 << i); | |
952 | if (--active_slots <= 0) | |
953 | break; | |
dd55ff83 JS |
954 | } |
955 | } | |
956 | } else { | |
957 | active_serializers = (channels + total_slots - 1) / total_slots; | |
958 | if (active_serializers == 1) | |
959 | active_slots = channels; | |
960 | else | |
961 | active_slots = total_slots; | |
b67f4487 | 962 | |
dd55ff83 JS |
963 | for (i = 0; i < active_slots; i++) |
964 | mask |= (1 << i); | |
965 | } | |
5dd17a3c | 966 | |
f68205a7 | 967 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, TX_ASYNC); |
6a99fb5f | 968 | |
cbc7956c PU |
969 | if (!mcasp->dat_port) |
970 | busel = TXSEL; | |
971 | ||
dd55ff83 JS |
972 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
973 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXTDM_REG, mask); | |
974 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, busel | TXORD); | |
975 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, | |
976 | FSXMOD(total_slots), FSXMOD(0x1FF)); | |
977 | } else if (stream == SNDRV_PCM_STREAM_CAPTURE) { | |
978 | mcasp_set_reg(mcasp, DAVINCI_MCASP_RXTDM_REG, mask); | |
979 | mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, busel | RXORD); | |
980 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, | |
981 | FSRMOD(total_slots), FSRMOD(0x1FF)); | |
0ad7d3a0 PU |
982 | /* |
983 | * If McASP is set to be TX/RX synchronous and the playback is | |
984 | * not running already we need to configure the TX slots in | |
985 | * order to have correct FSX on the bus | |
986 | */ | |
987 | if (mcasp_is_synchronous(mcasp) && !mcasp->channels) | |
988 | mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, | |
989 | FSXMOD(total_slots), FSXMOD(0x1FF)); | |
dd55ff83 | 990 | } |
2c56c4c2 PU |
991 | |
992 | return 0; | |
b67f4487 C |
993 | } |
994 | ||
995 | /* S/PDIF */ | |
6479285d DM |
996 | static int mcasp_dit_hw_param(struct davinci_mcasp *mcasp, |
997 | unsigned int rate) | |
b67f4487 | 998 | { |
6479285d DM |
999 | u32 cs_value = 0; |
1000 | u8 *cs_bytes = (u8*) &cs_value; | |
1001 | ||
b67f4487 C |
1002 | /* Set the TX format : 24 bit right rotation, 32 bit slot, Pad 0 |
1003 | and LSB first */ | |
f68205a7 | 1004 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXROT(6) | TXSSZ(15)); |
b67f4487 C |
1005 | |
1006 | /* Set TX frame synch : DIT Mode, 1 bit width, internal, rising edge */ | |
f68205a7 | 1007 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE | FSXMOD(0x180)); |
b67f4487 C |
1008 | |
1009 | /* Set the TX tdm : for all the slots */ | |
f68205a7 | 1010 | mcasp_set_reg(mcasp, DAVINCI_MCASP_TXTDM_REG, 0xFFFFFFFF); |
b67f4487 C |
1011 | |
1012 | /* Set the TX clock controls : div = 1 and internal */ | |
f68205a7 | 1013 | mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE | TX_ASYNC); |
b67f4487 | 1014 | |
f68205a7 | 1015 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_XEVTCTL_REG, TXDATADMADIS); |
b67f4487 C |
1016 | |
1017 | /* Only 44100 and 48000 are valid, both have the same setting */ | |
f68205a7 | 1018 | mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXDIV(3)); |
b67f4487 C |
1019 | |
1020 | /* Enable the DIT */ | |
f68205a7 | 1021 | mcasp_set_bits(mcasp, DAVINCI_MCASP_TXDITCTL_REG, DITEN); |
2c56c4c2 | 1022 | |
6479285d DM |
1023 | /* Set S/PDIF channel status bits */ |
1024 | cs_bytes[0] = IEC958_AES0_CON_NOT_COPYRIGHT; | |
1025 | cs_bytes[1] = IEC958_AES1_CON_PCM_CODER; | |
1026 | ||
1027 | switch (rate) { | |
1028 | case 22050: | |
1029 | cs_bytes[3] |= IEC958_AES3_CON_FS_22050; | |
1030 | break; | |
1031 | case 24000: | |
1032 | cs_bytes[3] |= IEC958_AES3_CON_FS_24000; | |
1033 | break; | |
1034 | case 32000: | |
1035 | cs_bytes[3] |= IEC958_AES3_CON_FS_32000; | |
1036 | break; | |
1037 | case 44100: | |
1038 | cs_bytes[3] |= IEC958_AES3_CON_FS_44100; | |
1039 | break; | |
1040 | case 48000: | |
1041 | cs_bytes[3] |= IEC958_AES3_CON_FS_48000; | |
1042 | break; | |
1043 | case 88200: | |
1044 | cs_bytes[3] |= IEC958_AES3_CON_FS_88200; | |
1045 | break; | |
1046 | case 96000: | |
1047 | cs_bytes[3] |= IEC958_AES3_CON_FS_96000; | |
1048 | break; | |
1049 | case 176400: | |
1050 | cs_bytes[3] |= IEC958_AES3_CON_FS_176400; | |
1051 | break; | |
1052 | case 192000: | |
1053 | cs_bytes[3] |= IEC958_AES3_CON_FS_192000; | |
1054 | break; | |
1055 | default: | |
1056 | printk(KERN_WARNING "unsupported sampling rate: %d\n", rate); | |
1057 | return -EINVAL; | |
1058 | } | |
1059 | ||
1060 | mcasp_set_reg(mcasp, DAVINCI_MCASP_DITCSRA_REG, cs_value); | |
1061 | mcasp_set_reg(mcasp, DAVINCI_MCASP_DITCSRB_REG, cs_value); | |
1062 | ||
2c56c4c2 | 1063 | return 0; |
b67f4487 C |
1064 | } |
1065 | ||
a75a053f | 1066 | static int davinci_mcasp_calc_clk_div(struct davinci_mcasp *mcasp, |
764958f2 | 1067 | unsigned int sysclk_freq, |
3e9bee11 | 1068 | unsigned int bclk_freq, bool set) |
a75a053f | 1069 | { |
ddecd149 PU |
1070 | u32 reg = mcasp_get_reg(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG); |
1071 | int div = sysclk_freq / bclk_freq; | |
1072 | int rem = sysclk_freq % bclk_freq; | |
764958f2 | 1073 | int error_ppm; |
ddecd149 PU |
1074 | int aux_div = 1; |
1075 | ||
1076 | if (div > (ACLKXDIV_MASK + 1)) { | |
1077 | if (reg & AHCLKXE) { | |
1078 | aux_div = div / (ACLKXDIV_MASK + 1); | |
1079 | if (div % (ACLKXDIV_MASK + 1)) | |
1080 | aux_div++; | |
1081 | ||
1082 | sysclk_freq /= aux_div; | |
1083 | div = sysclk_freq / bclk_freq; | |
1084 | rem = sysclk_freq % bclk_freq; | |
1085 | } else if (set) { | |
1086 | dev_warn(mcasp->dev, "Too fast reference clock (%u)\n", | |
1087 | sysclk_freq); | |
1088 | } | |
1089 | } | |
a75a053f JS |
1090 | |
1091 | if (rem != 0) { | |
1092 | if (div == 0 || | |
ddecd149 PU |
1093 | ((sysclk_freq / div) - bclk_freq) > |
1094 | (bclk_freq - (sysclk_freq / (div+1)))) { | |
a75a053f JS |
1095 | div++; |
1096 | rem = rem - bclk_freq; | |
1097 | } | |
1098 | } | |
3e9bee11 PU |
1099 | error_ppm = (div*1000000 + (int)div64_long(1000000LL*rem, |
1100 | (int)bclk_freq)) / div - 1000000; | |
a75a053f | 1101 | |
3e9bee11 PU |
1102 | if (set) { |
1103 | if (error_ppm) | |
1104 | dev_info(mcasp->dev, "Sample-rate is off by %d PPM\n", | |
1105 | error_ppm); | |
1106 | ||
1107 | __davinci_mcasp_set_clkdiv(mcasp, MCASP_CLKDIV_BCLK, div, 0); | |
ddecd149 PU |
1108 | if (reg & AHCLKXE) |
1109 | __davinci_mcasp_set_clkdiv(mcasp, MCASP_CLKDIV_AUXCLK, | |
1110 | aux_div, 0); | |
3e9bee11 | 1111 | } |
a75a053f | 1112 | |
3e9bee11 | 1113 | return error_ppm; |
a75a053f JS |
1114 | } |
1115 | ||
5fcb457a PU |
1116 | static inline u32 davinci_mcasp_tx_delay(struct davinci_mcasp *mcasp) |
1117 | { | |
1118 | if (!mcasp->txnumevt) | |
1119 | return 0; | |
1120 | ||
1121 | return mcasp_get_reg(mcasp, mcasp->fifo_base + MCASP_WFIFOSTS_OFFSET); | |
1122 | } | |
1123 | ||
1124 | static inline u32 davinci_mcasp_rx_delay(struct davinci_mcasp *mcasp) | |
1125 | { | |
1126 | if (!mcasp->rxnumevt) | |
1127 | return 0; | |
1128 | ||
1129 | return mcasp_get_reg(mcasp, mcasp->fifo_base + MCASP_RFIFOSTS_OFFSET); | |
1130 | } | |
1131 | ||
1132 | static snd_pcm_sframes_t davinci_mcasp_delay( | |
1133 | struct snd_pcm_substream *substream, | |
1134 | struct snd_soc_dai *cpu_dai) | |
1135 | { | |
1136 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); | |
1137 | u32 fifo_use; | |
1138 | ||
1139 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1140 | fifo_use = davinci_mcasp_tx_delay(mcasp); | |
1141 | else | |
1142 | fifo_use = davinci_mcasp_rx_delay(mcasp); | |
1143 | ||
1144 | /* | |
1145 | * Divide the used locations with the channel count to get the | |
1146 | * FIFO usage in samples (don't care about partial samples in the | |
1147 | * buffer). | |
1148 | */ | |
1149 | return fifo_use / substream->runtime->channels; | |
1150 | } | |
1151 | ||
b67f4487 C |
1152 | static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, |
1153 | struct snd_pcm_hw_params *params, | |
1154 | struct snd_soc_dai *cpu_dai) | |
1155 | { | |
70091a3e | 1156 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); |
b67f4487 | 1157 | int word_length; |
a7e46bd9 | 1158 | int channels = params_channels(params); |
dd093a0f | 1159 | int period_size = params_period_size(params); |
2c56c4c2 | 1160 | int ret; |
ab8b14b6 | 1161 | |
4a11ff26 PU |
1162 | ret = davinci_mcasp_set_dai_fmt(cpu_dai, mcasp->dai_fmt); |
1163 | if (ret) | |
1164 | return ret; | |
1165 | ||
8267525c DM |
1166 | /* |
1167 | * If mcasp is BCLK master, and a BCLK divider was not provided by | |
1168 | * the machine driver, we need to calculate the ratio. | |
1169 | */ | |
1170 | if (mcasp->bclk_master && mcasp->bclk_div == 0 && mcasp->sysclk_freq) { | |
1f114f77 | 1171 | int slots = mcasp->tdm_slots; |
a75a053f JS |
1172 | int rate = params_rate(params); |
1173 | int sbits = params_width(params); | |
a75a053f | 1174 | |
dd55ff83 JS |
1175 | if (mcasp->slot_width) |
1176 | sbits = mcasp->slot_width; | |
1177 | ||
764958f2 PU |
1178 | davinci_mcasp_calc_clk_div(mcasp, mcasp->sysclk_freq, |
1179 | rate * sbits * slots, true); | |
ab8b14b6 JS |
1180 | } |
1181 | ||
dd093a0f PU |
1182 | ret = mcasp_common_hw_param(mcasp, substream->stream, |
1183 | period_size * channels, channels); | |
0f7d9a63 PU |
1184 | if (ret) |
1185 | return ret; | |
1186 | ||
70091a3e | 1187 | if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE) |
6479285d | 1188 | ret = mcasp_dit_hw_param(mcasp, params_rate(params)); |
b67f4487 | 1189 | else |
18a4f557 MLC |
1190 | ret = mcasp_i2s_hw_param(mcasp, substream->stream, |
1191 | channels); | |
2c56c4c2 PU |
1192 | |
1193 | if (ret) | |
1194 | return ret; | |
b67f4487 C |
1195 | |
1196 | switch (params_format(params)) { | |
0a9d1385 | 1197 | case SNDRV_PCM_FORMAT_U8: |
b67f4487 | 1198 | case SNDRV_PCM_FORMAT_S8: |
ba764b3d | 1199 | word_length = 8; |
b67f4487 C |
1200 | break; |
1201 | ||
0a9d1385 | 1202 | case SNDRV_PCM_FORMAT_U16_LE: |
b67f4487 | 1203 | case SNDRV_PCM_FORMAT_S16_LE: |
ba764b3d | 1204 | word_length = 16; |
b67f4487 C |
1205 | break; |
1206 | ||
21eb24d8 DM |
1207 | case SNDRV_PCM_FORMAT_U24_3LE: |
1208 | case SNDRV_PCM_FORMAT_S24_3LE: | |
ba764b3d | 1209 | word_length = 24; |
21eb24d8 DM |
1210 | break; |
1211 | ||
6b7fa011 DM |
1212 | case SNDRV_PCM_FORMAT_U24_LE: |
1213 | case SNDRV_PCM_FORMAT_S24_LE: | |
182bef86 PU |
1214 | word_length = 24; |
1215 | break; | |
1216 | ||
0a9d1385 | 1217 | case SNDRV_PCM_FORMAT_U32_LE: |
b67f4487 | 1218 | case SNDRV_PCM_FORMAT_S32_LE: |
ba764b3d | 1219 | word_length = 32; |
b67f4487 C |
1220 | break; |
1221 | ||
1222 | default: | |
1223 | printk(KERN_WARNING "davinci-mcasp: unsupported PCM format"); | |
1224 | return -EINVAL; | |
1225 | } | |
6a99fb5f | 1226 | |
70091a3e | 1227 | davinci_config_channel_size(mcasp, word_length); |
b67f4487 | 1228 | |
11277833 PU |
1229 | if (mcasp->op_mode == DAVINCI_MCASP_IIS_MODE) |
1230 | mcasp->channels = channels; | |
1231 | ||
b67f4487 C |
1232 | return 0; |
1233 | } | |
1234 | ||
1235 | static int davinci_mcasp_trigger(struct snd_pcm_substream *substream, | |
1236 | int cmd, struct snd_soc_dai *cpu_dai) | |
1237 | { | |
70091a3e | 1238 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); |
b67f4487 C |
1239 | int ret = 0; |
1240 | ||
1241 | switch (cmd) { | |
b67f4487 | 1242 | case SNDRV_PCM_TRIGGER_RESUME: |
e473b847 C |
1243 | case SNDRV_PCM_TRIGGER_START: |
1244 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
70091a3e | 1245 | davinci_mcasp_start(mcasp, substream->stream); |
b67f4487 | 1246 | break; |
b67f4487 | 1247 | case SNDRV_PCM_TRIGGER_SUSPEND: |
a47979b5 | 1248 | case SNDRV_PCM_TRIGGER_STOP: |
b67f4487 | 1249 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
70091a3e | 1250 | davinci_mcasp_stop(mcasp, substream->stream); |
b67f4487 C |
1251 | break; |
1252 | ||
1253 | default: | |
1254 | ret = -EINVAL; | |
1255 | } | |
1256 | ||
1257 | return ret; | |
1258 | } | |
1259 | ||
1e112c35 PU |
1260 | static int davinci_mcasp_hw_rule_slot_width(struct snd_pcm_hw_params *params, |
1261 | struct snd_pcm_hw_rule *rule) | |
1262 | { | |
1263 | struct davinci_mcasp_ruledata *rd = rule->private; | |
1264 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1265 | struct snd_mask nfmt; | |
1266 | int i, slot_width; | |
1267 | ||
1268 | snd_mask_none(&nfmt); | |
1269 | slot_width = rd->mcasp->slot_width; | |
1270 | ||
1271 | for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) { | |
1272 | if (snd_mask_test(fmt, i)) { | |
1273 | if (snd_pcm_format_width(i) <= slot_width) { | |
1274 | snd_mask_set(&nfmt, i); | |
1275 | } | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | return snd_mask_refine(fmt, &nfmt); | |
1280 | } | |
1281 | ||
a75a053f JS |
1282 | static const unsigned int davinci_mcasp_dai_rates[] = { |
1283 | 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, | |
1284 | 88200, 96000, 176400, 192000, | |
1285 | }; | |
1286 | ||
1287 | #define DAVINCI_MAX_RATE_ERROR_PPM 1000 | |
1288 | ||
1289 | static int davinci_mcasp_hw_rule_rate(struct snd_pcm_hw_params *params, | |
1290 | struct snd_pcm_hw_rule *rule) | |
1291 | { | |
1292 | struct davinci_mcasp_ruledata *rd = rule->private; | |
1293 | struct snd_interval *ri = | |
1294 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
1295 | int sbits = params_width(params); | |
1f114f77 | 1296 | int slots = rd->mcasp->tdm_slots; |
518f6bab JS |
1297 | struct snd_interval range; |
1298 | int i; | |
a75a053f | 1299 | |
dd55ff83 JS |
1300 | if (rd->mcasp->slot_width) |
1301 | sbits = rd->mcasp->slot_width; | |
1302 | ||
518f6bab JS |
1303 | snd_interval_any(&range); |
1304 | range.empty = 1; | |
a75a053f JS |
1305 | |
1306 | for (i = 0; i < ARRAY_SIZE(davinci_mcasp_dai_rates); i++) { | |
518f6bab | 1307 | if (snd_interval_test(ri, davinci_mcasp_dai_rates[i])) { |
764958f2 PU |
1308 | uint bclk_freq = sbits * slots * |
1309 | davinci_mcasp_dai_rates[i]; | |
1310 | unsigned int sysclk_freq; | |
a75a053f JS |
1311 | int ppm; |
1312 | ||
764958f2 PU |
1313 | if (rd->mcasp->auxclk_fs_ratio) |
1314 | sysclk_freq = davinci_mcasp_dai_rates[i] * | |
1315 | rd->mcasp->auxclk_fs_ratio; | |
1316 | else | |
1317 | sysclk_freq = rd->mcasp->sysclk_freq; | |
1318 | ||
1319 | ppm = davinci_mcasp_calc_clk_div(rd->mcasp, sysclk_freq, | |
1320 | bclk_freq, false); | |
518f6bab JS |
1321 | if (abs(ppm) < DAVINCI_MAX_RATE_ERROR_PPM) { |
1322 | if (range.empty) { | |
1323 | range.min = davinci_mcasp_dai_rates[i]; | |
1324 | range.empty = 0; | |
1325 | } | |
1326 | range.max = davinci_mcasp_dai_rates[i]; | |
1327 | } | |
a75a053f JS |
1328 | } |
1329 | } | |
518f6bab | 1330 | |
a75a053f | 1331 | dev_dbg(rd->mcasp->dev, |
518f6bab JS |
1332 | "Frequencies %d-%d -> %d-%d for %d sbits and %d tdm slots\n", |
1333 | ri->min, ri->max, range.min, range.max, sbits, slots); | |
a75a053f | 1334 | |
518f6bab JS |
1335 | return snd_interval_refine(hw_param_interval(params, rule->var), |
1336 | &range); | |
a75a053f JS |
1337 | } |
1338 | ||
1339 | static int davinci_mcasp_hw_rule_format(struct snd_pcm_hw_params *params, | |
1340 | struct snd_pcm_hw_rule *rule) | |
1341 | { | |
1342 | struct davinci_mcasp_ruledata *rd = rule->private; | |
1343 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1344 | struct snd_mask nfmt; | |
1345 | int rate = params_rate(params); | |
1f114f77 | 1346 | int slots = rd->mcasp->tdm_slots; |
a75a053f JS |
1347 | int i, count = 0; |
1348 | ||
1349 | snd_mask_none(&nfmt); | |
1350 | ||
9be072a6 | 1351 | for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) { |
a75a053f | 1352 | if (snd_mask_test(fmt, i)) { |
dd55ff83 | 1353 | uint sbits = snd_pcm_format_width(i); |
764958f2 | 1354 | unsigned int sysclk_freq; |
a75a053f JS |
1355 | int ppm; |
1356 | ||
764958f2 PU |
1357 | if (rd->mcasp->auxclk_fs_ratio) |
1358 | sysclk_freq = rate * | |
1359 | rd->mcasp->auxclk_fs_ratio; | |
1360 | else | |
1361 | sysclk_freq = rd->mcasp->sysclk_freq; | |
1362 | ||
dd55ff83 JS |
1363 | if (rd->mcasp->slot_width) |
1364 | sbits = rd->mcasp->slot_width; | |
1365 | ||
764958f2 | 1366 | ppm = davinci_mcasp_calc_clk_div(rd->mcasp, sysclk_freq, |
3e9bee11 PU |
1367 | sbits * slots * rate, |
1368 | false); | |
a75a053f JS |
1369 | if (abs(ppm) < DAVINCI_MAX_RATE_ERROR_PPM) { |
1370 | snd_mask_set(&nfmt, i); | |
1371 | count++; | |
1372 | } | |
1373 | } | |
1374 | } | |
1375 | dev_dbg(rd->mcasp->dev, | |
1f114f77 JS |
1376 | "%d possible sample format for %d Hz and %d tdm slots\n", |
1377 | count, rate, slots); | |
a75a053f JS |
1378 | |
1379 | return snd_mask_refine(fmt, &nfmt); | |
1380 | } | |
1381 | ||
d43c17da PU |
1382 | static int davinci_mcasp_hw_rule_min_periodsize( |
1383 | struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) | |
1384 | { | |
1385 | struct snd_interval *period_size = hw_param_interval(params, | |
1386 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
1387 | struct snd_interval frames; | |
1388 | ||
1389 | snd_interval_any(&frames); | |
1390 | frames.min = 64; | |
1391 | frames.integer = 1; | |
1392 | ||
1393 | return snd_interval_refine(period_size, &frames); | |
1394 | } | |
1395 | ||
11277833 PU |
1396 | static int davinci_mcasp_startup(struct snd_pcm_substream *substream, |
1397 | struct snd_soc_dai *cpu_dai) | |
1398 | { | |
1399 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); | |
4cd9db08 PU |
1400 | struct davinci_mcasp_ruledata *ruledata = |
1401 | &mcasp->ruledata[substream->stream]; | |
11277833 | 1402 | u32 max_channels = 0; |
1e112c35 | 1403 | int i, dir, ret; |
dd55ff83 JS |
1404 | int tdm_slots = mcasp->tdm_slots; |
1405 | ||
19357366 PU |
1406 | /* Do not allow more then one stream per direction */ |
1407 | if (mcasp->substreams[substream->stream]) | |
1408 | return -EBUSY; | |
11277833 | 1409 | |
a7a3324a MLC |
1410 | mcasp->substreams[substream->stream] = substream; |
1411 | ||
19357366 PU |
1412 | if (mcasp->tdm_mask[substream->stream]) |
1413 | tdm_slots = hweight32(mcasp->tdm_mask[substream->stream]); | |
1414 | ||
11277833 PU |
1415 | if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE) |
1416 | return 0; | |
1417 | ||
1418 | /* | |
1419 | * Limit the maximum allowed channels for the first stream: | |
1420 | * number of serializers for the direction * tdm slots per serializer | |
1421 | */ | |
1422 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1423 | dir = TX_MODE; | |
1424 | else | |
1425 | dir = RX_MODE; | |
1426 | ||
1427 | for (i = 0; i < mcasp->num_serializer; i++) { | |
1428 | if (mcasp->serial_dir[i] == dir) | |
1429 | max_channels++; | |
1430 | } | |
4cd9db08 | 1431 | ruledata->serializers = max_channels; |
1e112c35 | 1432 | ruledata->mcasp = mcasp; |
dd55ff83 | 1433 | max_channels *= tdm_slots; |
11277833 PU |
1434 | /* |
1435 | * If the already active stream has less channels than the calculated | |
1436 | * limnit based on the seirializers * tdm_slots, we need to use that as | |
1437 | * a constraint for the second stream. | |
1438 | * Otherwise (first stream or less allowed channels) we use the | |
1439 | * calculated constraint. | |
1440 | */ | |
1441 | if (mcasp->channels && mcasp->channels < max_channels) | |
1442 | max_channels = mcasp->channels; | |
dd55ff83 JS |
1443 | /* |
1444 | * But we can always allow channels upto the amount of | |
1445 | * the available tdm_slots. | |
1446 | */ | |
1447 | if (max_channels < tdm_slots) | |
1448 | max_channels = tdm_slots; | |
11277833 PU |
1449 | |
1450 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
1451 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
e4798d26 | 1452 | 0, max_channels); |
a75a053f | 1453 | |
dd55ff83 JS |
1454 | snd_pcm_hw_constraint_list(substream->runtime, |
1455 | 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1456 | &mcasp->chconstr[substream->stream]); | |
1457 | ||
1e112c35 PU |
1458 | if (mcasp->slot_width) { |
1459 | /* Only allow formats require <= slot_width bits on the bus */ | |
1460 | ret = snd_pcm_hw_rule_add(substream->runtime, 0, | |
1461 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1462 | davinci_mcasp_hw_rule_slot_width, | |
1463 | ruledata, | |
1464 | SNDRV_PCM_HW_PARAM_FORMAT, -1); | |
1465 | if (ret) | |
1466 | return ret; | |
1467 | } | |
5935a056 | 1468 | |
a75a053f JS |
1469 | /* |
1470 | * If we rely on implicit BCLK divider setting we should | |
1471 | * set constraints based on what we can provide. | |
1472 | */ | |
1473 | if (mcasp->bclk_master && mcasp->bclk_div == 0 && mcasp->sysclk_freq) { | |
a75a053f JS |
1474 | ret = snd_pcm_hw_rule_add(substream->runtime, 0, |
1475 | SNDRV_PCM_HW_PARAM_RATE, | |
1476 | davinci_mcasp_hw_rule_rate, | |
4cd9db08 | 1477 | ruledata, |
1f114f77 | 1478 | SNDRV_PCM_HW_PARAM_FORMAT, -1); |
a75a053f JS |
1479 | if (ret) |
1480 | return ret; | |
1481 | ret = snd_pcm_hw_rule_add(substream->runtime, 0, | |
1482 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1483 | davinci_mcasp_hw_rule_format, | |
4cd9db08 | 1484 | ruledata, |
1f114f77 | 1485 | SNDRV_PCM_HW_PARAM_RATE, -1); |
a75a053f JS |
1486 | if (ret) |
1487 | return ret; | |
1488 | } | |
1489 | ||
d43c17da PU |
1490 | snd_pcm_hw_rule_add(substream->runtime, 0, |
1491 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1492 | davinci_mcasp_hw_rule_min_periodsize, NULL, | |
1493 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1494 | ||
11277833 PU |
1495 | return 0; |
1496 | } | |
1497 | ||
1498 | static void davinci_mcasp_shutdown(struct snd_pcm_substream *substream, | |
1499 | struct snd_soc_dai *cpu_dai) | |
1500 | { | |
1501 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai); | |
1502 | ||
a7a3324a MLC |
1503 | mcasp->substreams[substream->stream] = NULL; |
1504 | ||
11277833 PU |
1505 | if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE) |
1506 | return; | |
1507 | ||
1508 | if (!cpu_dai->active) | |
1509 | mcasp->channels = 0; | |
1510 | } | |
1511 | ||
85e7652d | 1512 | static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = { |
11277833 PU |
1513 | .startup = davinci_mcasp_startup, |
1514 | .shutdown = davinci_mcasp_shutdown, | |
b67f4487 | 1515 | .trigger = davinci_mcasp_trigger, |
5fcb457a | 1516 | .delay = davinci_mcasp_delay, |
b67f4487 C |
1517 | .hw_params = davinci_mcasp_hw_params, |
1518 | .set_fmt = davinci_mcasp_set_dai_fmt, | |
4ed8c9b7 | 1519 | .set_clkdiv = davinci_mcasp_set_clkdiv, |
5b66aa2d | 1520 | .set_sysclk = davinci_mcasp_set_sysclk, |
dd55ff83 | 1521 | .set_tdm_slot = davinci_mcasp_set_tdm_slot, |
b67f4487 C |
1522 | }; |
1523 | ||
d5902f69 PU |
1524 | static int davinci_mcasp_dai_probe(struct snd_soc_dai *dai) |
1525 | { | |
1526 | struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); | |
1527 | ||
9759e7ef PU |
1528 | dai->playback_dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK]; |
1529 | dai->capture_dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE]; | |
d5902f69 PU |
1530 | |
1531 | return 0; | |
1532 | } | |
1533 | ||
ed29cd5e PU |
1534 | #define DAVINCI_MCASP_RATES SNDRV_PCM_RATE_8000_192000 |
1535 | ||
0a9d1385 BG |
1536 | #define DAVINCI_MCASP_PCM_FMTS (SNDRV_PCM_FMTBIT_S8 | \ |
1537 | SNDRV_PCM_FMTBIT_U8 | \ | |
1538 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
1539 | SNDRV_PCM_FMTBIT_U16_LE | \ | |
21eb24d8 DM |
1540 | SNDRV_PCM_FMTBIT_S24_LE | \ |
1541 | SNDRV_PCM_FMTBIT_U24_LE | \ | |
1542 | SNDRV_PCM_FMTBIT_S24_3LE | \ | |
1543 | SNDRV_PCM_FMTBIT_U24_3LE | \ | |
0a9d1385 BG |
1544 | SNDRV_PCM_FMTBIT_S32_LE | \ |
1545 | SNDRV_PCM_FMTBIT_U32_LE) | |
1546 | ||
f0fba2ad | 1547 | static struct snd_soc_dai_driver davinci_mcasp_dai[] = { |
b67f4487 | 1548 | { |
f0fba2ad | 1549 | .name = "davinci-mcasp.0", |
d5902f69 | 1550 | .probe = davinci_mcasp_dai_probe, |
b67f4487 | 1551 | .playback = { |
e4798d26 | 1552 | .channels_min = 1, |
2952b27e | 1553 | .channels_max = 32 * 16, |
b67f4487 | 1554 | .rates = DAVINCI_MCASP_RATES, |
0a9d1385 | 1555 | .formats = DAVINCI_MCASP_PCM_FMTS, |
b67f4487 C |
1556 | }, |
1557 | .capture = { | |
e4798d26 | 1558 | .channels_min = 1, |
2952b27e | 1559 | .channels_max = 32 * 16, |
b67f4487 | 1560 | .rates = DAVINCI_MCASP_RATES, |
0a9d1385 | 1561 | .formats = DAVINCI_MCASP_PCM_FMTS, |
b67f4487 C |
1562 | }, |
1563 | .ops = &davinci_mcasp_dai_ops, | |
1564 | ||
d75249f5 | 1565 | .symmetric_samplebits = 1, |
295c3405 | 1566 | .symmetric_rates = 1, |
b67f4487 C |
1567 | }, |
1568 | { | |
58e48d97 | 1569 | .name = "davinci-mcasp.1", |
d5902f69 | 1570 | .probe = davinci_mcasp_dai_probe, |
b67f4487 C |
1571 | .playback = { |
1572 | .channels_min = 1, | |
1573 | .channels_max = 384, | |
1574 | .rates = DAVINCI_MCASP_RATES, | |
0a9d1385 | 1575 | .formats = DAVINCI_MCASP_PCM_FMTS, |
b67f4487 C |
1576 | }, |
1577 | .ops = &davinci_mcasp_dai_ops, | |
1578 | }, | |
1579 | ||
1580 | }; | |
b67f4487 | 1581 | |
eeef0eda KM |
1582 | static const struct snd_soc_component_driver davinci_mcasp_component = { |
1583 | .name = "davinci-mcasp", | |
1584 | }; | |
1585 | ||
256ba181 | 1586 | /* Some HW specific values and defaults. The rest is filled in from DT. */ |
d1debafc | 1587 | static struct davinci_mcasp_pdata dm646x_mcasp_pdata = { |
256ba181 JS |
1588 | .tx_dma_offset = 0x400, |
1589 | .rx_dma_offset = 0x400, | |
256ba181 JS |
1590 | .version = MCASP_VERSION_1, |
1591 | }; | |
1592 | ||
d1debafc | 1593 | static struct davinci_mcasp_pdata da830_mcasp_pdata = { |
256ba181 JS |
1594 | .tx_dma_offset = 0x2000, |
1595 | .rx_dma_offset = 0x2000, | |
256ba181 JS |
1596 | .version = MCASP_VERSION_2, |
1597 | }; | |
1598 | ||
d1debafc | 1599 | static struct davinci_mcasp_pdata am33xx_mcasp_pdata = { |
256ba181 JS |
1600 | .tx_dma_offset = 0, |
1601 | .rx_dma_offset = 0, | |
256ba181 JS |
1602 | .version = MCASP_VERSION_3, |
1603 | }; | |
1604 | ||
d1debafc | 1605 | static struct davinci_mcasp_pdata dra7_mcasp_pdata = { |
9ac0013c PU |
1606 | /* The CFG port offset will be calculated if it is needed */ |
1607 | .tx_dma_offset = 0, | |
1608 | .rx_dma_offset = 0, | |
453c4990 PU |
1609 | .version = MCASP_VERSION_4, |
1610 | }; | |
1611 | ||
3e3b8c34 HG |
1612 | static const struct of_device_id mcasp_dt_ids[] = { |
1613 | { | |
1614 | .compatible = "ti,dm646x-mcasp-audio", | |
256ba181 | 1615 | .data = &dm646x_mcasp_pdata, |
3e3b8c34 HG |
1616 | }, |
1617 | { | |
1618 | .compatible = "ti,da830-mcasp-audio", | |
256ba181 | 1619 | .data = &da830_mcasp_pdata, |
3e3b8c34 | 1620 | }, |
e5ec69da | 1621 | { |
3af9e031 | 1622 | .compatible = "ti,am33xx-mcasp-audio", |
b14899da | 1623 | .data = &am33xx_mcasp_pdata, |
e5ec69da | 1624 | }, |
453c4990 PU |
1625 | { |
1626 | .compatible = "ti,dra7-mcasp-audio", | |
1627 | .data = &dra7_mcasp_pdata, | |
1628 | }, | |
3e3b8c34 HG |
1629 | { /* sentinel */ } |
1630 | }; | |
1631 | MODULE_DEVICE_TABLE(of, mcasp_dt_ids); | |
1632 | ||
ae726e93 PU |
1633 | static int mcasp_reparent_fck(struct platform_device *pdev) |
1634 | { | |
1635 | struct device_node *node = pdev->dev.of_node; | |
1636 | struct clk *gfclk, *parent_clk; | |
1637 | const char *parent_name; | |
1638 | int ret; | |
1639 | ||
1640 | if (!node) | |
1641 | return 0; | |
1642 | ||
1643 | parent_name = of_get_property(node, "fck_parent", NULL); | |
1644 | if (!parent_name) | |
1645 | return 0; | |
1646 | ||
c670254f PU |
1647 | dev_warn(&pdev->dev, "Update the bindings to use assigned-clocks!\n"); |
1648 | ||
ae726e93 PU |
1649 | gfclk = clk_get(&pdev->dev, "fck"); |
1650 | if (IS_ERR(gfclk)) { | |
1651 | dev_err(&pdev->dev, "failed to get fck\n"); | |
1652 | return PTR_ERR(gfclk); | |
1653 | } | |
1654 | ||
1655 | parent_clk = clk_get(NULL, parent_name); | |
1656 | if (IS_ERR(parent_clk)) { | |
1657 | dev_err(&pdev->dev, "failed to get parent clock\n"); | |
1658 | ret = PTR_ERR(parent_clk); | |
1659 | goto err1; | |
1660 | } | |
1661 | ||
1662 | ret = clk_set_parent(gfclk, parent_clk); | |
1663 | if (ret) { | |
1664 | dev_err(&pdev->dev, "failed to reparent fck\n"); | |
1665 | goto err2; | |
1666 | } | |
1667 | ||
1668 | err2: | |
1669 | clk_put(parent_clk); | |
1670 | err1: | |
1671 | clk_put(gfclk); | |
1672 | return ret; | |
1673 | } | |
1674 | ||
d1debafc | 1675 | static struct davinci_mcasp_pdata *davinci_mcasp_set_pdata_from_of( |
3e3b8c34 HG |
1676 | struct platform_device *pdev) |
1677 | { | |
1678 | struct device_node *np = pdev->dev.of_node; | |
d1debafc | 1679 | struct davinci_mcasp_pdata *pdata = NULL; |
3e3b8c34 | 1680 | const struct of_device_id *match = |
ea421eb1 | 1681 | of_match_device(mcasp_dt_ids, &pdev->dev); |
4023fe6f | 1682 | struct of_phandle_args dma_spec; |
3e3b8c34 HG |
1683 | |
1684 | const u32 *of_serial_dir32; | |
3e3b8c34 HG |
1685 | u32 val; |
1686 | int i, ret = 0; | |
1687 | ||
1688 | if (pdev->dev.platform_data) { | |
1689 | pdata = pdev->dev.platform_data; | |
bc184549 | 1690 | pdata->dismod = DISMOD_LOW; |
3e3b8c34 HG |
1691 | return pdata; |
1692 | } else if (match) { | |
272ee030 PU |
1693 | pdata = devm_kmemdup(&pdev->dev, match->data, sizeof(*pdata), |
1694 | GFP_KERNEL); | |
1695 | if (!pdata) { | |
272ee030 PU |
1696 | ret = -ENOMEM; |
1697 | return pdata; | |
1698 | } | |
3e3b8c34 HG |
1699 | } else { |
1700 | /* control shouldn't reach here. something is wrong */ | |
1701 | ret = -EINVAL; | |
1702 | goto nodata; | |
1703 | } | |
1704 | ||
3e3b8c34 HG |
1705 | ret = of_property_read_u32(np, "op-mode", &val); |
1706 | if (ret >= 0) | |
1707 | pdata->op_mode = val; | |
1708 | ||
1709 | ret = of_property_read_u32(np, "tdm-slots", &val); | |
2952b27e MB |
1710 | if (ret >= 0) { |
1711 | if (val < 2 || val > 32) { | |
1712 | dev_err(&pdev->dev, | |
1713 | "tdm-slots must be in rage [2-32]\n"); | |
1714 | ret = -EINVAL; | |
1715 | goto nodata; | |
1716 | } | |
1717 | ||
3e3b8c34 | 1718 | pdata->tdm_slots = val; |
2952b27e | 1719 | } |
3e3b8c34 | 1720 | |
3e3b8c34 HG |
1721 | of_serial_dir32 = of_get_property(np, "serial-dir", &val); |
1722 | val /= sizeof(u32); | |
3e3b8c34 | 1723 | if (of_serial_dir32) { |
1427e660 PU |
1724 | u8 *of_serial_dir = devm_kzalloc(&pdev->dev, |
1725 | (sizeof(*of_serial_dir) * val), | |
1726 | GFP_KERNEL); | |
3e3b8c34 HG |
1727 | if (!of_serial_dir) { |
1728 | ret = -ENOMEM; | |
1729 | goto nodata; | |
1730 | } | |
1731 | ||
1427e660 | 1732 | for (i = 0; i < val; i++) |
3e3b8c34 HG |
1733 | of_serial_dir[i] = be32_to_cpup(&of_serial_dir32[i]); |
1734 | ||
1427e660 | 1735 | pdata->num_serializer = val; |
3e3b8c34 HG |
1736 | pdata->serial_dir = of_serial_dir; |
1737 | } | |
1738 | ||
4023fe6f JS |
1739 | ret = of_property_match_string(np, "dma-names", "tx"); |
1740 | if (ret < 0) | |
1741 | goto nodata; | |
1742 | ||
1743 | ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret, | |
1744 | &dma_spec); | |
1745 | if (ret < 0) | |
1746 | goto nodata; | |
1747 | ||
1748 | pdata->tx_dma_channel = dma_spec.args[0]; | |
1749 | ||
caa1d794 PU |
1750 | /* RX is not valid in DIT mode */ |
1751 | if (pdata->op_mode != DAVINCI_MCASP_DIT_MODE) { | |
1752 | ret = of_property_match_string(np, "dma-names", "rx"); | |
1753 | if (ret < 0) | |
1754 | goto nodata; | |
4023fe6f | 1755 | |
caa1d794 PU |
1756 | ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret, |
1757 | &dma_spec); | |
1758 | if (ret < 0) | |
1759 | goto nodata; | |
4023fe6f | 1760 | |
caa1d794 PU |
1761 | pdata->rx_dma_channel = dma_spec.args[0]; |
1762 | } | |
4023fe6f | 1763 | |
3e3b8c34 HG |
1764 | ret = of_property_read_u32(np, "tx-num-evt", &val); |
1765 | if (ret >= 0) | |
1766 | pdata->txnumevt = val; | |
1767 | ||
1768 | ret = of_property_read_u32(np, "rx-num-evt", &val); | |
1769 | if (ret >= 0) | |
1770 | pdata->rxnumevt = val; | |
1771 | ||
1772 | ret = of_property_read_u32(np, "sram-size-playback", &val); | |
1773 | if (ret >= 0) | |
1774 | pdata->sram_size_playback = val; | |
1775 | ||
1776 | ret = of_property_read_u32(np, "sram-size-capture", &val); | |
1777 | if (ret >= 0) | |
1778 | pdata->sram_size_capture = val; | |
1779 | ||
bc184549 PU |
1780 | ret = of_property_read_u32(np, "dismod", &val); |
1781 | if (ret >= 0) { | |
1782 | if (val == 0 || val == 2 || val == 3) { | |
1783 | pdata->dismod = DISMOD_VAL(val); | |
1784 | } else { | |
1785 | dev_warn(&pdev->dev, "Invalid dismod value: %u\n", val); | |
1786 | pdata->dismod = DISMOD_LOW; | |
1787 | } | |
1788 | } else { | |
1789 | pdata->dismod = DISMOD_LOW; | |
1790 | } | |
1791 | ||
3e3b8c34 HG |
1792 | return pdata; |
1793 | ||
1794 | nodata: | |
1795 | if (ret < 0) { | |
1796 | dev_err(&pdev->dev, "Error populating platform data, err %d\n", | |
1797 | ret); | |
1798 | pdata = NULL; | |
1799 | } | |
1800 | return pdata; | |
1801 | } | |
1802 | ||
9fbd58cf JS |
1803 | enum { |
1804 | PCM_EDMA, | |
1805 | PCM_SDMA, | |
1806 | }; | |
1807 | static const char *sdma_prefix = "ti,omap"; | |
1808 | ||
1809 | static int davinci_mcasp_get_dma_type(struct davinci_mcasp *mcasp) | |
1810 | { | |
1811 | struct dma_chan *chan; | |
1812 | const char *tmp; | |
1813 | int ret = PCM_EDMA; | |
1814 | ||
1815 | if (!mcasp->dev->of_node) | |
1816 | return PCM_EDMA; | |
1817 | ||
1818 | tmp = mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK].filter_data; | |
1819 | chan = dma_request_slave_channel_reason(mcasp->dev, tmp); | |
1820 | if (IS_ERR(chan)) { | |
1821 | if (PTR_ERR(chan) != -EPROBE_DEFER) | |
1822 | dev_err(mcasp->dev, | |
1823 | "Can't verify DMA configuration (%ld)\n", | |
1824 | PTR_ERR(chan)); | |
1825 | return PTR_ERR(chan); | |
1826 | } | |
befff4fb TI |
1827 | if (WARN_ON(!chan->device || !chan->device->dev)) |
1828 | return -EINVAL; | |
9fbd58cf JS |
1829 | |
1830 | if (chan->device->dev->of_node) | |
1831 | ret = of_property_read_string(chan->device->dev->of_node, | |
1832 | "compatible", &tmp); | |
1833 | else | |
1834 | dev_dbg(mcasp->dev, "DMA controller has no of-node\n"); | |
1835 | ||
1836 | dma_release_channel(chan); | |
1837 | if (ret) | |
1838 | return ret; | |
1839 | ||
1840 | dev_dbg(mcasp->dev, "DMA controller compatible = \"%s\"\n", tmp); | |
1841 | if (!strncmp(tmp, sdma_prefix, strlen(sdma_prefix))) | |
1842 | return PCM_SDMA; | |
1843 | ||
1844 | return PCM_EDMA; | |
1845 | } | |
1846 | ||
9ac0013c PU |
1847 | static u32 davinci_mcasp_txdma_offset(struct davinci_mcasp_pdata *pdata) |
1848 | { | |
1849 | int i; | |
1850 | u32 offset = 0; | |
1851 | ||
1852 | if (pdata->version != MCASP_VERSION_4) | |
1853 | return pdata->tx_dma_offset; | |
1854 | ||
1855 | for (i = 0; i < pdata->num_serializer; i++) { | |
1856 | if (pdata->serial_dir[i] == TX_MODE) { | |
1857 | if (!offset) { | |
1858 | offset = DAVINCI_MCASP_TXBUF_REG(i); | |
1859 | } else { | |
1860 | pr_err("%s: Only one serializer allowed!\n", | |
1861 | __func__); | |
1862 | break; | |
1863 | } | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | return offset; | |
1868 | } | |
1869 | ||
1870 | static u32 davinci_mcasp_rxdma_offset(struct davinci_mcasp_pdata *pdata) | |
1871 | { | |
1872 | int i; | |
1873 | u32 offset = 0; | |
1874 | ||
1875 | if (pdata->version != MCASP_VERSION_4) | |
1876 | return pdata->rx_dma_offset; | |
1877 | ||
1878 | for (i = 0; i < pdata->num_serializer; i++) { | |
1879 | if (pdata->serial_dir[i] == RX_MODE) { | |
1880 | if (!offset) { | |
1881 | offset = DAVINCI_MCASP_RXBUF_REG(i); | |
1882 | } else { | |
1883 | pr_err("%s: Only one serializer allowed!\n", | |
1884 | __func__); | |
1885 | break; | |
1886 | } | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | return offset; | |
1891 | } | |
1892 | ||
540f1ba7 PU |
1893 | #ifdef CONFIG_GPIOLIB |
1894 | static int davinci_mcasp_gpio_request(struct gpio_chip *chip, unsigned offset) | |
1895 | { | |
1896 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1897 | ||
1898 | if (mcasp->num_serializer && offset < mcasp->num_serializer && | |
1899 | mcasp->serial_dir[offset] != INACTIVE_MODE) { | |
1900 | dev_err(mcasp->dev, "AXR%u pin is used for audio\n", offset); | |
1901 | return -EBUSY; | |
1902 | } | |
1903 | ||
1904 | /* Do not change the PIN yet */ | |
1905 | ||
1906 | return pm_runtime_get_sync(mcasp->dev); | |
1907 | } | |
1908 | ||
1909 | static void davinci_mcasp_gpio_free(struct gpio_chip *chip, unsigned offset) | |
1910 | { | |
1911 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1912 | ||
1913 | /* Set the direction to input */ | |
1914 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(offset)); | |
1915 | ||
1916 | /* Set the pin as McASP pin */ | |
1917 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PFUNC_REG, BIT(offset)); | |
1918 | ||
1919 | pm_runtime_put_sync(mcasp->dev); | |
1920 | } | |
1921 | ||
1922 | static int davinci_mcasp_gpio_direction_out(struct gpio_chip *chip, | |
1923 | unsigned offset, int value) | |
1924 | { | |
1925 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1926 | u32 val; | |
1927 | ||
1928 | if (value) | |
1929 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PDOUT_REG, BIT(offset)); | |
1930 | else | |
1931 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDOUT_REG, BIT(offset)); | |
1932 | ||
1933 | val = mcasp_get_reg(mcasp, DAVINCI_MCASP_PFUNC_REG); | |
1934 | if (!(val & BIT(offset))) { | |
1935 | /* Set the pin as GPIO pin */ | |
1936 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PFUNC_REG, BIT(offset)); | |
1937 | ||
1938 | /* Set the direction to output */ | |
1939 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(offset)); | |
1940 | } | |
1941 | ||
1942 | return 0; | |
1943 | } | |
1944 | ||
1945 | static void davinci_mcasp_gpio_set(struct gpio_chip *chip, unsigned offset, | |
1946 | int value) | |
1947 | { | |
1948 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1949 | ||
1950 | if (value) | |
1951 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PDOUT_REG, BIT(offset)); | |
1952 | else | |
1953 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDOUT_REG, BIT(offset)); | |
1954 | } | |
1955 | ||
1956 | static int davinci_mcasp_gpio_direction_in(struct gpio_chip *chip, | |
1957 | unsigned offset) | |
1958 | { | |
1959 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1960 | u32 val; | |
1961 | ||
1962 | val = mcasp_get_reg(mcasp, DAVINCI_MCASP_PFUNC_REG); | |
1963 | if (!(val & BIT(offset))) { | |
1964 | /* Set the direction to input */ | |
1965 | mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, BIT(offset)); | |
1966 | ||
1967 | /* Set the pin as GPIO pin */ | |
1968 | mcasp_set_bits(mcasp, DAVINCI_MCASP_PFUNC_REG, BIT(offset)); | |
1969 | } | |
1970 | ||
1971 | return 0; | |
1972 | } | |
1973 | ||
1974 | static int davinci_mcasp_gpio_get(struct gpio_chip *chip, unsigned offset) | |
1975 | { | |
1976 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1977 | u32 val; | |
1978 | ||
1979 | val = mcasp_get_reg(mcasp, DAVINCI_MCASP_PDSET_REG); | |
1980 | if (val & BIT(offset)) | |
1981 | return 1; | |
1982 | ||
1983 | return 0; | |
1984 | } | |
1985 | ||
1986 | static int davinci_mcasp_gpio_get_direction(struct gpio_chip *chip, | |
1987 | unsigned offset) | |
1988 | { | |
1989 | struct davinci_mcasp *mcasp = gpiochip_get_data(chip); | |
1990 | u32 val; | |
1991 | ||
1992 | val = mcasp_get_reg(mcasp, DAVINCI_MCASP_PDIR_REG); | |
1993 | if (val & BIT(offset)) | |
1994 | return 0; | |
1995 | ||
1996 | return 1; | |
1997 | } | |
1998 | ||
1999 | static const struct gpio_chip davinci_mcasp_template_chip = { | |
2000 | .owner = THIS_MODULE, | |
2001 | .request = davinci_mcasp_gpio_request, | |
2002 | .free = davinci_mcasp_gpio_free, | |
2003 | .direction_output = davinci_mcasp_gpio_direction_out, | |
2004 | .set = davinci_mcasp_gpio_set, | |
2005 | .direction_input = davinci_mcasp_gpio_direction_in, | |
2006 | .get = davinci_mcasp_gpio_get, | |
2007 | .get_direction = davinci_mcasp_gpio_get_direction, | |
2008 | .base = -1, | |
2009 | .ngpio = 32, | |
2010 | }; | |
2011 | ||
2012 | static int davinci_mcasp_init_gpiochip(struct davinci_mcasp *mcasp) | |
2013 | { | |
2014 | if (!of_property_read_bool(mcasp->dev->of_node, "gpio-controller")) | |
2015 | return 0; | |
2016 | ||
2017 | mcasp->gpio_chip = davinci_mcasp_template_chip; | |
2018 | mcasp->gpio_chip.label = dev_name(mcasp->dev); | |
2019 | mcasp->gpio_chip.parent = mcasp->dev; | |
2020 | #ifdef CONFIG_OF_GPIO | |
2021 | mcasp->gpio_chip.of_node = mcasp->dev->of_node; | |
2022 | #endif | |
2023 | ||
2024 | return devm_gpiochip_add_data(mcasp->dev, &mcasp->gpio_chip, mcasp); | |
2025 | } | |
2026 | ||
2027 | #else /* CONFIG_GPIOLIB */ | |
2028 | static inline int davinci_mcasp_init_gpiochip(struct davinci_mcasp *mcasp) | |
2029 | { | |
2030 | return 0; | |
2031 | } | |
2032 | #endif /* CONFIG_GPIOLIB */ | |
2033 | ||
764958f2 PU |
2034 | static int davinci_mcasp_get_dt_params(struct davinci_mcasp *mcasp) |
2035 | { | |
2036 | struct device_node *np = mcasp->dev->of_node; | |
2037 | int ret; | |
2038 | u32 val; | |
2039 | ||
2040 | if (!np) | |
2041 | return 0; | |
2042 | ||
2043 | ret = of_property_read_u32(np, "auxclk-fs-ratio", &val); | |
2044 | if (ret >= 0) | |
2045 | mcasp->auxclk_fs_ratio = val; | |
2046 | ||
2047 | return 0; | |
2048 | } | |
2049 | ||
b67f4487 C |
2050 | static int davinci_mcasp_probe(struct platform_device *pdev) |
2051 | { | |
8de131f2 | 2052 | struct snd_dmaengine_dai_dma_data *dma_data; |
508a43fd | 2053 | struct resource *mem, *res, *dat; |
d1debafc | 2054 | struct davinci_mcasp_pdata *pdata; |
70091a3e | 2055 | struct davinci_mcasp *mcasp; |
a7a3324a | 2056 | char *irq_name; |
9759e7ef | 2057 | int *dma; |
a7a3324a | 2058 | int irq; |
96d31e2b | 2059 | int ret; |
b67f4487 | 2060 | |
3e3b8c34 HG |
2061 | if (!pdev->dev.platform_data && !pdev->dev.of_node) { |
2062 | dev_err(&pdev->dev, "No platform data supplied\n"); | |
2063 | return -EINVAL; | |
2064 | } | |
2065 | ||
70091a3e | 2066 | mcasp = devm_kzalloc(&pdev->dev, sizeof(struct davinci_mcasp), |
96d31e2b | 2067 | GFP_KERNEL); |
70091a3e | 2068 | if (!mcasp) |
b67f4487 C |
2069 | return -ENOMEM; |
2070 | ||
3e3b8c34 HG |
2071 | pdata = davinci_mcasp_set_pdata_from_of(pdev); |
2072 | if (!pdata) { | |
2073 | dev_err(&pdev->dev, "no platform data\n"); | |
2074 | return -EINVAL; | |
2075 | } | |
2076 | ||
256ba181 | 2077 | mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu"); |
b67f4487 | 2078 | if (!mem) { |
70091a3e | 2079 | dev_warn(mcasp->dev, |
256ba181 JS |
2080 | "\"mpu\" mem resource not found, using index 0\n"); |
2081 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2082 | if (!mem) { | |
2083 | dev_err(&pdev->dev, "no mem resource?\n"); | |
2084 | return -ENODEV; | |
2085 | } | |
b67f4487 C |
2086 | } |
2087 | ||
508a43fd AL |
2088 | mcasp->base = devm_ioremap_resource(&pdev->dev, mem); |
2089 | if (IS_ERR(mcasp->base)) | |
2090 | return PTR_ERR(mcasp->base); | |
b67f4487 | 2091 | |
10884347 | 2092 | pm_runtime_enable(&pdev->dev); |
b67f4487 | 2093 | |
70091a3e | 2094 | mcasp->op_mode = pdata->op_mode; |
1a5923da PU |
2095 | /* sanity check for tdm slots parameter */ |
2096 | if (mcasp->op_mode == DAVINCI_MCASP_IIS_MODE) { | |
2097 | if (pdata->tdm_slots < 2) { | |
2098 | dev_err(&pdev->dev, "invalid tdm slots: %d\n", | |
2099 | pdata->tdm_slots); | |
2100 | mcasp->tdm_slots = 2; | |
2101 | } else if (pdata->tdm_slots > 32) { | |
2102 | dev_err(&pdev->dev, "invalid tdm slots: %d\n", | |
2103 | pdata->tdm_slots); | |
2104 | mcasp->tdm_slots = 32; | |
2105 | } else { | |
2106 | mcasp->tdm_slots = pdata->tdm_slots; | |
2107 | } | |
2108 | } | |
2109 | ||
70091a3e | 2110 | mcasp->num_serializer = pdata->num_serializer; |
61754717 | 2111 | #ifdef CONFIG_PM |
a86854d0 KC |
2112 | mcasp->context.xrsr_regs = devm_kcalloc(&pdev->dev, |
2113 | mcasp->num_serializer, sizeof(u32), | |
f114ce60 | 2114 | GFP_KERNEL); |
4243e045 CJ |
2115 | if (!mcasp->context.xrsr_regs) { |
2116 | ret = -ENOMEM; | |
2117 | goto err; | |
2118 | } | |
f114ce60 | 2119 | #endif |
70091a3e PU |
2120 | mcasp->serial_dir = pdata->serial_dir; |
2121 | mcasp->version = pdata->version; | |
2122 | mcasp->txnumevt = pdata->txnumevt; | |
2123 | mcasp->rxnumevt = pdata->rxnumevt; | |
bc184549 | 2124 | mcasp->dismod = pdata->dismod; |
487dce88 | 2125 | |
70091a3e | 2126 | mcasp->dev = &pdev->dev; |
b67f4487 | 2127 | |
5a1b8a80 PU |
2128 | irq = platform_get_irq_byname(pdev, "common"); |
2129 | if (irq >= 0) { | |
ab1fffe3 | 2130 | irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_common", |
5a1b8a80 | 2131 | dev_name(&pdev->dev)); |
0c8b794c AY |
2132 | if (!irq_name) { |
2133 | ret = -ENOMEM; | |
2134 | goto err; | |
2135 | } | |
5a1b8a80 PU |
2136 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
2137 | davinci_mcasp_common_irq_handler, | |
8f511ffb PU |
2138 | IRQF_ONESHOT | IRQF_SHARED, |
2139 | irq_name, mcasp); | |
5a1b8a80 PU |
2140 | if (ret) { |
2141 | dev_err(&pdev->dev, "common IRQ request failed\n"); | |
2142 | goto err; | |
2143 | } | |
2144 | ||
2145 | mcasp->irq_request[SNDRV_PCM_STREAM_PLAYBACK] = XUNDRN; | |
2146 | mcasp->irq_request[SNDRV_PCM_STREAM_CAPTURE] = ROVRN; | |
2147 | } | |
2148 | ||
a7a3324a MLC |
2149 | irq = platform_get_irq_byname(pdev, "rx"); |
2150 | if (irq >= 0) { | |
ab1fffe3 | 2151 | irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_rx", |
a7a3324a | 2152 | dev_name(&pdev->dev)); |
0c8b794c AY |
2153 | if (!irq_name) { |
2154 | ret = -ENOMEM; | |
2155 | goto err; | |
2156 | } | |
a7a3324a MLC |
2157 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
2158 | davinci_mcasp_rx_irq_handler, | |
2159 | IRQF_ONESHOT, irq_name, mcasp); | |
2160 | if (ret) { | |
2161 | dev_err(&pdev->dev, "RX IRQ request failed\n"); | |
2162 | goto err; | |
2163 | } | |
2164 | ||
2165 | mcasp->irq_request[SNDRV_PCM_STREAM_CAPTURE] = ROVRN; | |
2166 | } | |
2167 | ||
2168 | irq = platform_get_irq_byname(pdev, "tx"); | |
2169 | if (irq >= 0) { | |
ab1fffe3 | 2170 | irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_tx", |
a7a3324a | 2171 | dev_name(&pdev->dev)); |
0c8b794c AY |
2172 | if (!irq_name) { |
2173 | ret = -ENOMEM; | |
2174 | goto err; | |
2175 | } | |
a7a3324a MLC |
2176 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
2177 | davinci_mcasp_tx_irq_handler, | |
2178 | IRQF_ONESHOT, irq_name, mcasp); | |
2179 | if (ret) { | |
2180 | dev_err(&pdev->dev, "TX IRQ request failed\n"); | |
2181 | goto err; | |
2182 | } | |
2183 | ||
2184 | mcasp->irq_request[SNDRV_PCM_STREAM_PLAYBACK] = XUNDRN; | |
2185 | } | |
2186 | ||
256ba181 | 2187 | dat = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat"); |
cbc7956c PU |
2188 | if (dat) |
2189 | mcasp->dat_port = true; | |
256ba181 | 2190 | |
8de131f2 | 2191 | dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK]; |
cbc7956c | 2192 | if (dat) |
9759e7ef | 2193 | dma_data->addr = dat->start; |
cbc7956c | 2194 | else |
9ac0013c | 2195 | dma_data->addr = mem->start + davinci_mcasp_txdma_offset(pdata); |
453c4990 | 2196 | |
9759e7ef | 2197 | dma = &mcasp->dma_request[SNDRV_PCM_STREAM_PLAYBACK]; |
b67f4487 | 2198 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); |
4023fe6f | 2199 | if (res) |
9759e7ef | 2200 | *dma = res->start; |
4023fe6f | 2201 | else |
9759e7ef | 2202 | *dma = pdata->tx_dma_channel; |
92e2a6f6 | 2203 | |
8de131f2 PU |
2204 | /* dmaengine filter data for DT and non-DT boot */ |
2205 | if (pdev->dev.of_node) | |
2206 | dma_data->filter_data = "tx"; | |
2207 | else | |
9759e7ef | 2208 | dma_data->filter_data = dma; |
8de131f2 | 2209 | |
caa1d794 PU |
2210 | /* RX is not valid in DIT mode */ |
2211 | if (mcasp->op_mode != DAVINCI_MCASP_DIT_MODE) { | |
caa1d794 | 2212 | dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE]; |
caa1d794 | 2213 | if (dat) |
9759e7ef | 2214 | dma_data->addr = dat->start; |
caa1d794 | 2215 | else |
9ac0013c PU |
2216 | dma_data->addr = |
2217 | mem->start + davinci_mcasp_rxdma_offset(pdata); | |
caa1d794 | 2218 | |
9759e7ef | 2219 | dma = &mcasp->dma_request[SNDRV_PCM_STREAM_CAPTURE]; |
caa1d794 PU |
2220 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); |
2221 | if (res) | |
9759e7ef | 2222 | *dma = res->start; |
caa1d794 | 2223 | else |
9759e7ef | 2224 | *dma = pdata->rx_dma_channel; |
caa1d794 PU |
2225 | |
2226 | /* dmaengine filter data for DT and non-DT boot */ | |
2227 | if (pdev->dev.of_node) | |
2228 | dma_data->filter_data = "rx"; | |
2229 | else | |
9759e7ef | 2230 | dma_data->filter_data = dma; |
caa1d794 | 2231 | } |
453c4990 | 2232 | |
cbc7956c PU |
2233 | if (mcasp->version < MCASP_VERSION_3) { |
2234 | mcasp->fifo_base = DAVINCI_MCASP_V2_AFIFO_BASE; | |
64ebdec3 | 2235 | /* dma_params->dma_addr is pointing to the data port address */ |
cbc7956c PU |
2236 | mcasp->dat_port = true; |
2237 | } else { | |
2238 | mcasp->fifo_base = DAVINCI_MCASP_V3_AFIFO_BASE; | |
2239 | } | |
b67f4487 | 2240 | |
dd55ff83 JS |
2241 | /* Allocate memory for long enough list for all possible |
2242 | * scenarios. Maximum number tdm slots is 32 and there cannot | |
2243 | * be more serializers than given in the configuration. The | |
2244 | * serializer directions could be taken into account, but it | |
2245 | * would make code much more complex and save only couple of | |
2246 | * bytes. | |
2247 | */ | |
2248 | mcasp->chconstr[SNDRV_PCM_STREAM_PLAYBACK].list = | |
a86854d0 KC |
2249 | devm_kcalloc(mcasp->dev, |
2250 | 32 + mcasp->num_serializer - 1, | |
2251 | sizeof(unsigned int), | |
dd55ff83 JS |
2252 | GFP_KERNEL); |
2253 | ||
2254 | mcasp->chconstr[SNDRV_PCM_STREAM_CAPTURE].list = | |
a86854d0 KC |
2255 | devm_kcalloc(mcasp->dev, |
2256 | 32 + mcasp->num_serializer - 1, | |
2257 | sizeof(unsigned int), | |
dd55ff83 JS |
2258 | GFP_KERNEL); |
2259 | ||
2260 | if (!mcasp->chconstr[SNDRV_PCM_STREAM_PLAYBACK].list || | |
1b8b68b0 CJ |
2261 | !mcasp->chconstr[SNDRV_PCM_STREAM_CAPTURE].list) { |
2262 | ret = -ENOMEM; | |
2263 | goto err; | |
2264 | } | |
dd55ff83 JS |
2265 | |
2266 | ret = davinci_mcasp_set_ch_constraints(mcasp); | |
5935a056 JS |
2267 | if (ret) |
2268 | goto err; | |
2269 | ||
70091a3e | 2270 | dev_set_drvdata(&pdev->dev, mcasp); |
ae726e93 PU |
2271 | |
2272 | mcasp_reparent_fck(pdev); | |
2273 | ||
540f1ba7 PU |
2274 | /* All PINS as McASP */ |
2275 | pm_runtime_get_sync(mcasp->dev); | |
2276 | mcasp_set_reg(mcasp, DAVINCI_MCASP_PFUNC_REG, 0x00000000); | |
2277 | pm_runtime_put(mcasp->dev); | |
2278 | ||
2279 | ret = davinci_mcasp_init_gpiochip(mcasp); | |
2280 | if (ret) | |
2281 | goto err; | |
2282 | ||
764958f2 PU |
2283 | ret = davinci_mcasp_get_dt_params(mcasp); |
2284 | if (ret) | |
2285 | return -EINVAL; | |
2286 | ||
b6bb3709 PU |
2287 | ret = devm_snd_soc_register_component(&pdev->dev, |
2288 | &davinci_mcasp_component, | |
2289 | &davinci_mcasp_dai[pdata->op_mode], 1); | |
b67f4487 C |
2290 | |
2291 | if (ret != 0) | |
b6bb3709 | 2292 | goto err; |
f08095a4 | 2293 | |
9fbd58cf JS |
2294 | ret = davinci_mcasp_get_dma_type(mcasp); |
2295 | switch (ret) { | |
2296 | case PCM_EDMA: | |
f3f9cfa8 | 2297 | ret = edma_pcm_platform_register(&pdev->dev); |
9fbd58cf JS |
2298 | break; |
2299 | case PCM_SDMA: | |
3e802e90 | 2300 | ret = sdma_pcm_platform_register(&pdev->dev, "tx", "rx"); |
9fbd58cf | 2301 | break; |
d5c6c59a | 2302 | default: |
9fbd58cf JS |
2303 | dev_err(&pdev->dev, "No DMA controller found (%d)\n", ret); |
2304 | case -EPROBE_DEFER: | |
2305 | goto err; | |
d5c6c59a PU |
2306 | break; |
2307 | } | |
2308 | ||
2309 | if (ret) { | |
2310 | dev_err(&pdev->dev, "register PCM failed: %d\n", ret); | |
b6bb3709 | 2311 | goto err; |
f08095a4 HG |
2312 | } |
2313 | ||
b67f4487 C |
2314 | return 0; |
2315 | ||
b6bb3709 | 2316 | err: |
10884347 | 2317 | pm_runtime_disable(&pdev->dev); |
b67f4487 C |
2318 | return ret; |
2319 | } | |
2320 | ||
2321 | static int davinci_mcasp_remove(struct platform_device *pdev) | |
2322 | { | |
10884347 | 2323 | pm_runtime_disable(&pdev->dev); |
b67f4487 | 2324 | |
b67f4487 C |
2325 | return 0; |
2326 | } | |
2327 | ||
61754717 PU |
2328 | #ifdef CONFIG_PM |
2329 | static int davinci_mcasp_runtime_suspend(struct device *dev) | |
2330 | { | |
2331 | struct davinci_mcasp *mcasp = dev_get_drvdata(dev); | |
2332 | struct davinci_mcasp_context *context = &mcasp->context; | |
2333 | u32 reg; | |
2334 | int i; | |
2335 | ||
2336 | for (i = 0; i < ARRAY_SIZE(context_regs); i++) | |
2337 | context->config_regs[i] = mcasp_get_reg(mcasp, context_regs[i]); | |
2338 | ||
2339 | if (mcasp->txnumevt) { | |
2340 | reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; | |
2341 | context->afifo_regs[0] = mcasp_get_reg(mcasp, reg); | |
2342 | } | |
2343 | if (mcasp->rxnumevt) { | |
2344 | reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; | |
2345 | context->afifo_regs[1] = mcasp_get_reg(mcasp, reg); | |
2346 | } | |
2347 | ||
2348 | for (i = 0; i < mcasp->num_serializer; i++) | |
2349 | context->xrsr_regs[i] = mcasp_get_reg(mcasp, | |
2350 | DAVINCI_MCASP_XRSRCTL_REG(i)); | |
2351 | ||
2352 | return 0; | |
2353 | } | |
2354 | ||
2355 | static int davinci_mcasp_runtime_resume(struct device *dev) | |
2356 | { | |
2357 | struct davinci_mcasp *mcasp = dev_get_drvdata(dev); | |
2358 | struct davinci_mcasp_context *context = &mcasp->context; | |
2359 | u32 reg; | |
2360 | int i; | |
2361 | ||
2362 | for (i = 0; i < ARRAY_SIZE(context_regs); i++) | |
2363 | mcasp_set_reg(mcasp, context_regs[i], context->config_regs[i]); | |
2364 | ||
2365 | if (mcasp->txnumevt) { | |
2366 | reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET; | |
2367 | mcasp_set_reg(mcasp, reg, context->afifo_regs[0]); | |
2368 | } | |
2369 | if (mcasp->rxnumevt) { | |
2370 | reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET; | |
2371 | mcasp_set_reg(mcasp, reg, context->afifo_regs[1]); | |
2372 | } | |
2373 | ||
2374 | for (i = 0; i < mcasp->num_serializer; i++) | |
2375 | mcasp_set_reg(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i), | |
2376 | context->xrsr_regs[i]); | |
2377 | ||
2378 | return 0; | |
2379 | } | |
2380 | ||
2381 | #endif | |
2382 | ||
2383 | static const struct dev_pm_ops davinci_mcasp_pm_ops = { | |
2384 | SET_RUNTIME_PM_OPS(davinci_mcasp_runtime_suspend, | |
2385 | davinci_mcasp_runtime_resume, | |
2386 | NULL) | |
2387 | }; | |
2388 | ||
b67f4487 C |
2389 | static struct platform_driver davinci_mcasp_driver = { |
2390 | .probe = davinci_mcasp_probe, | |
2391 | .remove = davinci_mcasp_remove, | |
2392 | .driver = { | |
2393 | .name = "davinci-mcasp", | |
61754717 | 2394 | .pm = &davinci_mcasp_pm_ops, |
ea421eb1 | 2395 | .of_match_table = mcasp_dt_ids, |
b67f4487 C |
2396 | }, |
2397 | }; | |
2398 | ||
f9b8a514 | 2399 | module_platform_driver(davinci_mcasp_driver); |
b67f4487 C |
2400 | |
2401 | MODULE_AUTHOR("Steve Chen"); | |
2402 | MODULE_DESCRIPTION("TI DAVINCI McASP SoC Interface"); | |
2403 | MODULE_LICENSE("GPL"); |