Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f9b95980 | 2 | /* |
3 | * kirkwood-i2s.c | |
4 | * | |
5 | * (c) 2010 Arnaud Patard <apatard@mandriva.com> | |
69737897 | 6 | * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> |
f9b95980 | 7 | */ |
8 | ||
9 | #include <linux/init.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/platform_device.h> | |
12 | #include <linux/io.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/mbus.h> | |
15 | #include <linux/delay.h> | |
e919c716 | 16 | #include <linux/clk.h> |
f9b95980 | 17 | #include <sound/pcm.h> |
18 | #include <sound/pcm_params.h> | |
19 | #include <sound/soc.h> | |
c02cecb9 | 20 | #include <linux/platform_data/asoc-kirkwood.h> |
eb632318 JFM |
21 | #include <linux/of.h> |
22 | ||
f9b95980 | 23 | #include "kirkwood.h" |
24 | ||
f9b95980 | 25 | #define KIRKWOOD_I2S_FORMATS \ |
26 | (SNDRV_PCM_FMTBIT_S16_LE | \ | |
27 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
28 | SNDRV_PCM_FMTBIT_S32_LE) | |
29 | ||
1c195ddb JFM |
30 | #define KIRKWOOD_SPDIF_FORMATS \ |
31 | (SNDRV_PCM_FMTBIT_S16_LE | \ | |
32 | SNDRV_PCM_FMTBIT_S24_LE) | |
33 | ||
2adfc688 MW |
34 | /* These registers are relative to the second register region - |
35 | * audio pll configuration. | |
36 | */ | |
37 | #define A38X_PLL_CONF_REG0 0x0 | |
38 | #define A38X_PLL_FB_CLK_DIV_OFFSET 10 | |
39 | #define A38X_PLL_FB_CLK_DIV_MASK 0x7fc00 | |
40 | #define A38X_PLL_CONF_REG1 0x4 | |
41 | #define A38X_PLL_FREQ_OFFSET_MASK 0xffff | |
42 | #define A38X_PLL_FREQ_OFFSET_VALID BIT(16) | |
43 | #define A38X_PLL_SW_RESET BIT(31) | |
44 | #define A38X_PLL_CONF_REG2 0x8 | |
45 | #define A38X_PLL_AUDIO_POSTDIV_MASK 0x7f | |
46 | ||
47 | /* Bit below belongs to SoC control register corresponding to the third | |
48 | * register region. | |
49 | */ | |
50 | #define A38X_SPDIF_MODE_ENABLE BIT(27) | |
51 | ||
52 | static int armada_38x_i2s_init_quirk(struct platform_device *pdev, | |
53 | struct kirkwood_dma_data *priv, | |
54 | struct snd_soc_dai_driver *dai_drv) | |
55 | { | |
56 | struct device_node *np = pdev->dev.of_node; | |
57 | u32 reg_val; | |
58 | int i; | |
59 | ||
60 | priv->pll_config = devm_platform_ioremap_resource_byname(pdev, "pll_regs"); | |
61 | if (IS_ERR(priv->pll_config)) | |
62 | return -ENOMEM; | |
63 | ||
64 | priv->soc_control = devm_platform_ioremap_resource_byname(pdev, "soc_ctrl"); | |
65 | if (IS_ERR(priv->soc_control)) | |
66 | return -ENOMEM; | |
67 | ||
68 | /* Select one of exceptive modes: I2S or S/PDIF */ | |
69 | reg_val = readl(priv->soc_control); | |
70 | if (of_property_read_bool(np, "spdif-mode")) { | |
71 | reg_val |= A38X_SPDIF_MODE_ENABLE; | |
72 | dev_info(&pdev->dev, "using S/PDIF mode\n"); | |
73 | } else { | |
74 | reg_val &= ~A38X_SPDIF_MODE_ENABLE; | |
75 | dev_info(&pdev->dev, "using I2S mode\n"); | |
76 | } | |
77 | writel(reg_val, priv->soc_control); | |
78 | ||
79 | /* Update available rates of mclk's fs */ | |
80 | for (i = 0; i < 2; i++) { | |
81 | dai_drv[i].playback.rates |= SNDRV_PCM_RATE_192000; | |
82 | dai_drv[i].capture.rates |= SNDRV_PCM_RATE_192000; | |
83 | } | |
84 | ||
85 | return 0; | |
86 | } | |
87 | ||
88 | static inline void armada_38x_set_pll(void __iomem *base, unsigned long rate) | |
89 | { | |
90 | u32 reg_val; | |
91 | u16 freq_offset = 0x22b0; | |
92 | u8 audio_postdiv, fb_clk_div = 0x1d; | |
93 | ||
94 | /* Set frequency offset value to not valid and enable PLL reset */ | |
95 | reg_val = readl(base + A38X_PLL_CONF_REG1); | |
96 | reg_val &= ~A38X_PLL_FREQ_OFFSET_VALID; | |
97 | reg_val &= ~A38X_PLL_SW_RESET; | |
98 | writel(reg_val, base + A38X_PLL_CONF_REG1); | |
99 | ||
100 | udelay(1); | |
101 | ||
102 | /* Update PLL parameters */ | |
103 | switch (rate) { | |
104 | default: | |
105 | case 44100: | |
106 | freq_offset = 0x735; | |
107 | fb_clk_div = 0x1b; | |
108 | audio_postdiv = 0xc; | |
109 | break; | |
110 | case 48000: | |
111 | audio_postdiv = 0xc; | |
112 | break; | |
113 | case 96000: | |
114 | audio_postdiv = 0x6; | |
115 | break; | |
116 | case 192000: | |
117 | audio_postdiv = 0x3; | |
118 | break; | |
119 | } | |
120 | ||
121 | reg_val = readl(base + A38X_PLL_CONF_REG0); | |
122 | reg_val &= ~A38X_PLL_FB_CLK_DIV_MASK; | |
123 | reg_val |= (fb_clk_div << A38X_PLL_FB_CLK_DIV_OFFSET); | |
124 | writel(reg_val, base + A38X_PLL_CONF_REG0); | |
125 | ||
126 | reg_val = readl(base + A38X_PLL_CONF_REG2); | |
127 | reg_val &= ~A38X_PLL_AUDIO_POSTDIV_MASK; | |
128 | reg_val |= audio_postdiv; | |
129 | writel(reg_val, base + A38X_PLL_CONF_REG2); | |
130 | ||
131 | reg_val = readl(base + A38X_PLL_CONF_REG1); | |
132 | reg_val &= ~A38X_PLL_FREQ_OFFSET_MASK; | |
133 | reg_val |= freq_offset; | |
134 | writel(reg_val, base + A38X_PLL_CONF_REG1); | |
135 | ||
136 | udelay(1); | |
137 | ||
138 | /* Disable reset */ | |
139 | reg_val |= A38X_PLL_SW_RESET; | |
140 | writel(reg_val, base + A38X_PLL_CONF_REG1); | |
141 | ||
142 | /* Wait 50us for PLL to lock */ | |
143 | udelay(50); | |
144 | ||
145 | /* Restore frequency offset value validity */ | |
146 | reg_val |= A38X_PLL_FREQ_OFFSET_VALID; | |
147 | writel(reg_val, base + A38X_PLL_CONF_REG1); | |
148 | } | |
149 | ||
f9b95980 | 150 | static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai, |
151 | unsigned int fmt) | |
152 | { | |
f0fba2ad | 153 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai); |
f9b95980 | 154 | unsigned long mask; |
155 | unsigned long value; | |
156 | ||
157 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
158 | case SND_SOC_DAIFMT_RIGHT_J: | |
159 | mask = KIRKWOOD_I2S_CTL_RJ; | |
160 | break; | |
161 | case SND_SOC_DAIFMT_LEFT_J: | |
162 | mask = KIRKWOOD_I2S_CTL_LJ; | |
163 | break; | |
164 | case SND_SOC_DAIFMT_I2S: | |
165 | mask = KIRKWOOD_I2S_CTL_I2S; | |
166 | break; | |
167 | default: | |
168 | return -EINVAL; | |
169 | } | |
170 | ||
171 | /* | |
172 | * Set same format for playback and record | |
173 | * This avoids some troubles. | |
174 | */ | |
175 | value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL); | |
176 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; | |
177 | value |= mask; | |
178 | writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL); | |
179 | ||
180 | value = readl(priv->io+KIRKWOOD_I2S_RECCTL); | |
181 | value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; | |
182 | value |= mask; | |
183 | writel(value, priv->io+KIRKWOOD_I2S_RECCTL); | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate) | |
189 | { | |
190 | unsigned long value; | |
191 | ||
192 | value = KIRKWOOD_DCO_CTL_OFFSET_0; | |
193 | switch (rate) { | |
194 | default: | |
195 | case 44100: | |
196 | value |= KIRKWOOD_DCO_CTL_FREQ_11; | |
197 | break; | |
198 | case 48000: | |
199 | value |= KIRKWOOD_DCO_CTL_FREQ_12; | |
200 | break; | |
201 | case 96000: | |
202 | value |= KIRKWOOD_DCO_CTL_FREQ_24; | |
203 | break; | |
204 | } | |
205 | writel(value, io + KIRKWOOD_DCO_CTL); | |
206 | ||
207 | /* wait for dco locked */ | |
208 | do { | |
209 | cpu_relax(); | |
210 | value = readl(io + KIRKWOOD_DCO_SPCR_STATUS); | |
2424d458 | 211 | value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK; |
f9b95980 | 212 | } while (value == 0); |
213 | } | |
214 | ||
363589bf RK |
215 | static void kirkwood_set_rate(struct snd_soc_dai *dai, |
216 | struct kirkwood_dma_data *priv, unsigned long rate) | |
217 | { | |
218 | uint32_t clks_ctrl; | |
219 | ||
1f1b6579 | 220 | if (IS_ERR(priv->extclk)) { |
8a537f85 JFM |
221 | /* use internal dco for the supported rates |
222 | * defined in kirkwood_i2s_dai */ | |
363589bf RK |
223 | dev_dbg(dai->dev, "%s: dco set rate = %lu\n", |
224 | __func__, rate); | |
2adfc688 MW |
225 | if (priv->pll_config) |
226 | armada_38x_set_pll(priv->pll_config, rate); | |
227 | else | |
228 | kirkwood_set_dco(priv->io, rate); | |
363589bf RK |
229 | |
230 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO; | |
8a537f85 JFM |
231 | } else { |
232 | /* use the external clock for the other rates | |
233 | * defined in kirkwood_i2s_dai_extclk */ | |
363589bf RK |
234 | dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n", |
235 | __func__, rate, 256 * rate); | |
236 | clk_set_rate(priv->extclk, 256 * rate); | |
237 | ||
238 | clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK; | |
239 | } | |
240 | writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL); | |
241 | } | |
242 | ||
f0fba2ad LG |
243 | static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, |
244 | struct snd_soc_dai *dai) | |
245 | { | |
246 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); | |
247 | ||
248 | snd_soc_dai_set_dma_data(dai, substream, priv); | |
249 | return 0; | |
250 | } | |
251 | ||
f9b95980 | 252 | static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, |
253 | struct snd_pcm_hw_params *params, | |
254 | struct snd_soc_dai *dai) | |
255 | { | |
f0fba2ad | 256 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
d8d11ba5 RK |
257 | uint32_t ctl_play, ctl_rec; |
258 | unsigned int i2s_reg; | |
259 | unsigned long i2s_value; | |
f9b95980 | 260 | |
261 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
262 | i2s_reg = KIRKWOOD_I2S_PLAYCTL; | |
f9b95980 | 263 | } else { |
264 | i2s_reg = KIRKWOOD_I2S_RECCTL; | |
f9b95980 | 265 | } |
266 | ||
363589bf | 267 | kirkwood_set_rate(dai, priv, params_rate(params)); |
f9b95980 | 268 | |
269 | i2s_value = readl(priv->io+i2s_reg); | |
270 | i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; | |
271 | ||
f9b95980 | 272 | /* |
273 | * Size settings in play/rec i2s control regs and play/rec control | |
274 | * regs must be the same. | |
275 | */ | |
276 | switch (params_format(params)) { | |
277 | case SNDRV_PCM_FORMAT_S16_LE: | |
278 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; | |
d8d11ba5 | 279 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C | |
75b9b65e JFM |
280 | KIRKWOOD_PLAYCTL_I2S_EN | |
281 | KIRKWOOD_PLAYCTL_SPDIF_EN; | |
d8d11ba5 | 282 | ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C | |
75b9b65e JFM |
283 | KIRKWOOD_RECCTL_I2S_EN | |
284 | KIRKWOOD_RECCTL_SPDIF_EN; | |
f9b95980 | 285 | break; |
286 | /* | |
287 | * doesn't work... S20_3LE != kirkwood 20bit format ? | |
288 | * | |
289 | case SNDRV_PCM_FORMAT_S20_3LE: | |
290 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; | |
d8d11ba5 RK |
291 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 | |
292 | KIRKWOOD_PLAYCTL_I2S_EN; | |
293 | ctl_rec = KIRKWOOD_RECCTL_SIZE_20 | | |
294 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 295 | break; |
296 | */ | |
297 | case SNDRV_PCM_FORMAT_S24_LE: | |
298 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; | |
d8d11ba5 | 299 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 | |
75b9b65e JFM |
300 | KIRKWOOD_PLAYCTL_I2S_EN | |
301 | KIRKWOOD_PLAYCTL_SPDIF_EN; | |
d8d11ba5 | 302 | ctl_rec = KIRKWOOD_RECCTL_SIZE_24 | |
75b9b65e JFM |
303 | KIRKWOOD_RECCTL_I2S_EN | |
304 | KIRKWOOD_RECCTL_SPDIF_EN; | |
f9b95980 | 305 | break; |
306 | case SNDRV_PCM_FORMAT_S32_LE: | |
307 | i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; | |
d8d11ba5 RK |
308 | ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 | |
309 | KIRKWOOD_PLAYCTL_I2S_EN; | |
310 | ctl_rec = KIRKWOOD_RECCTL_SIZE_32 | | |
311 | KIRKWOOD_RECCTL_I2S_EN; | |
f9b95980 | 312 | break; |
313 | default: | |
314 | return -EINVAL; | |
315 | } | |
dfe4c936 | 316 | |
317 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
dfe4c936 | 318 | if (params_channels(params) == 1) |
d8d11ba5 | 319 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH; |
dfe4c936 | 320 | else |
d8d11ba5 RK |
321 | ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF; |
322 | ||
323 | priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK | | |
db43b16f | 324 | KIRKWOOD_PLAYCTL_ENABLE_MASK | |
d8d11ba5 RK |
325 | KIRKWOOD_PLAYCTL_SIZE_MASK); |
326 | priv->ctl_play |= ctl_play; | |
327 | } else { | |
67721906 RK |
328 | priv->ctl_rec &= ~(KIRKWOOD_RECCTL_ENABLE_MASK | |
329 | KIRKWOOD_RECCTL_SIZE_MASK); | |
d8d11ba5 | 330 | priv->ctl_rec |= ctl_rec; |
dfe4c936 | 331 | } |
332 | ||
f9b95980 | 333 | writel(i2s_value, priv->io+i2s_reg); |
f9b95980 | 334 | |
335 | return 0; | |
336 | } | |
337 | ||
2fbc3821 RK |
338 | static unsigned kirkwood_i2s_play_mute(unsigned ctl) |
339 | { | |
340 | if (!(ctl & KIRKWOOD_PLAYCTL_I2S_EN)) | |
341 | ctl |= KIRKWOOD_PLAYCTL_I2S_MUTE; | |
342 | if (!(ctl & KIRKWOOD_PLAYCTL_SPDIF_EN)) | |
343 | ctl |= KIRKWOOD_PLAYCTL_SPDIF_MUTE; | |
344 | return ctl; | |
345 | } | |
346 | ||
f9b95980 | 347 | static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, |
348 | int cmd, struct snd_soc_dai *dai) | |
349 | { | |
920ec4e5 | 350 | struct snd_pcm_runtime *runtime = substream->runtime; |
f0fba2ad | 351 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
982b604b RK |
352 | uint32_t ctl, value; |
353 | ||
354 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); | |
4d2097e5 | 355 | if ((ctl & KIRKWOOD_PLAYCTL_ENABLE_MASK) == 0) { |
982b604b RK |
356 | unsigned timeout = 5000; |
357 | /* | |
358 | * The Armada510 spec says that if we enter pause mode, the | |
359 | * busy bit must be read back as clear _twice_. Make sure | |
360 | * we respect that otherwise we get DMA underruns. | |
361 | */ | |
362 | do { | |
363 | value = ctl; | |
364 | ctl = readl(priv->io + KIRKWOOD_PLAYCTL); | |
365 | if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)) | |
366 | break; | |
367 | udelay(1); | |
368 | } while (timeout--); | |
369 | ||
370 | if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY) | |
371 | dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n", | |
372 | ctl); | |
373 | } | |
f9b95980 | 374 | |
375 | switch (cmd) { | |
376 | case SNDRV_PCM_TRIGGER_START: | |
d8d11ba5 RK |
377 | /* configure */ |
378 | ctl = priv->ctl_play; | |
4f6f1478 JFM |
379 | if (dai->id == 0) |
380 | ctl &= ~KIRKWOOD_PLAYCTL_SPDIF_EN; /* i2s */ | |
381 | else | |
382 | ctl &= ~KIRKWOOD_PLAYCTL_I2S_EN; /* spdif */ | |
2fbc3821 | 383 | ctl = kirkwood_i2s_play_mute(ctl); |
db43b16f | 384 | value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK; |
d8d11ba5 RK |
385 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
386 | ||
387 | /* enable interrupts */ | |
920ec4e5 RK |
388 | if (!runtime->no_period_wakeup) { |
389 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
390 | value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
391 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
392 | } | |
f9b95980 | 393 | |
d8d11ba5 | 394 | /* enable playback */ |
982b604b | 395 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 396 | break; |
397 | ||
398 | case SNDRV_PCM_TRIGGER_STOP: | |
399 | /* stop audio, disable interrupts */ | |
75b9b65e JFM |
400 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE | |
401 | KIRKWOOD_PLAYCTL_SPDIF_MUTE; | |
982b604b | 402 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 403 | |
404 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
405 | value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; | |
406 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
407 | ||
408 | /* disable all playbacks */ | |
db43b16f | 409 | ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK; |
982b604b | 410 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 411 | break; |
412 | ||
413 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
414 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
75b9b65e JFM |
415 | ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE | |
416 | KIRKWOOD_PLAYCTL_SPDIF_MUTE; | |
982b604b | 417 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 418 | break; |
419 | ||
420 | case SNDRV_PCM_TRIGGER_RESUME: | |
421 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
75b9b65e JFM |
422 | ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE | |
423 | KIRKWOOD_PLAYCTL_SPDIF_MUTE); | |
2fbc3821 | 424 | ctl = kirkwood_i2s_play_mute(ctl); |
982b604b | 425 | writel(ctl, priv->io + KIRKWOOD_PLAYCTL); |
f9b95980 | 426 | break; |
427 | ||
428 | default: | |
429 | return -EINVAL; | |
430 | } | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, | |
436 | int cmd, struct snd_soc_dai *dai) | |
437 | { | |
f0fba2ad | 438 | struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); |
d8d11ba5 | 439 | uint32_t ctl, value; |
f9b95980 | 440 | |
441 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
442 | ||
443 | switch (cmd) { | |
444 | case SNDRV_PCM_TRIGGER_START: | |
d8d11ba5 RK |
445 | /* configure */ |
446 | ctl = priv->ctl_rec; | |
75b9b65e JFM |
447 | if (dai->id == 0) |
448 | ctl &= ~KIRKWOOD_RECCTL_SPDIF_EN; /* i2s */ | |
449 | else | |
450 | ctl &= ~KIRKWOOD_RECCTL_I2S_EN; /* spdif */ | |
451 | ||
52b896cf | 452 | value = ctl & ~KIRKWOOD_RECCTL_ENABLE_MASK; |
d8d11ba5 RK |
453 | writel(value, priv->io + KIRKWOOD_RECCTL); |
454 | ||
455 | /* enable interrupts */ | |
f9b95980 | 456 | value = readl(priv->io + KIRKWOOD_INT_MASK); |
457 | value |= KIRKWOOD_INT_CAUSE_REC_BYTES; | |
458 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
459 | ||
d8d11ba5 RK |
460 | /* enable record */ |
461 | writel(ctl, priv->io + KIRKWOOD_RECCTL); | |
f9b95980 | 462 | break; |
463 | ||
464 | case SNDRV_PCM_TRIGGER_STOP: | |
465 | /* stop audio, disable interrupts */ | |
466 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 467 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 468 | writel(value, priv->io + KIRKWOOD_RECCTL); |
469 | ||
470 | value = readl(priv->io + KIRKWOOD_INT_MASK); | |
471 | value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; | |
472 | writel(value, priv->io + KIRKWOOD_INT_MASK); | |
473 | ||
474 | /* disable all records */ | |
475 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
52b896cf | 476 | value &= ~KIRKWOOD_RECCTL_ENABLE_MASK; |
f9b95980 | 477 | writel(value, priv->io + KIRKWOOD_RECCTL); |
478 | break; | |
479 | ||
480 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
481 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
482 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 483 | value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; |
f9b95980 | 484 | writel(value, priv->io + KIRKWOOD_RECCTL); |
485 | break; | |
486 | ||
487 | case SNDRV_PCM_TRIGGER_RESUME: | |
488 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
489 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
b424ec95 | 490 | value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); |
f9b95980 | 491 | writel(value, priv->io + KIRKWOOD_RECCTL); |
492 | break; | |
493 | ||
494 | default: | |
495 | return -EINVAL; | |
f9b95980 | 496 | } |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
501 | static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, | |
502 | struct snd_soc_dai *dai) | |
503 | { | |
504 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
505 | return kirkwood_i2s_play_trigger(substream, cmd, dai); | |
506 | else | |
507 | return kirkwood_i2s_rec_trigger(substream, cmd, dai); | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
75b9b65e | 512 | static int kirkwood_i2s_init(struct kirkwood_dma_data *priv) |
f9b95980 | 513 | { |
514 | unsigned long value; | |
515 | unsigned int reg_data; | |
516 | ||
517 | /* put system in a "safe" state : */ | |
518 | /* disable audio interrupts */ | |
519 | writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); | |
520 | writel(0, priv->io + KIRKWOOD_INT_MASK); | |
521 | ||
522 | reg_data = readl(priv->io + 0x1200); | |
523 | reg_data &= (~(0x333FF8)); | |
524 | reg_data |= 0x111D18; | |
525 | writel(reg_data, priv->io + 0x1200); | |
526 | ||
527 | msleep(500); | |
528 | ||
529 | reg_data = readl(priv->io + 0x1200); | |
530 | reg_data &= (~(0x333FF8)); | |
531 | reg_data |= 0x111D18; | |
532 | writel(reg_data, priv->io + 0x1200); | |
533 | ||
534 | /* disable playback/record */ | |
535 | value = readl(priv->io + KIRKWOOD_PLAYCTL); | |
db43b16f | 536 | value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK; |
f9b95980 | 537 | writel(value, priv->io + KIRKWOOD_PLAYCTL); |
538 | ||
539 | value = readl(priv->io + KIRKWOOD_RECCTL); | |
52b896cf | 540 | value &= ~KIRKWOOD_RECCTL_ENABLE_MASK; |
f9b95980 | 541 | writel(value, priv->io + KIRKWOOD_RECCTL); |
542 | ||
543 | return 0; | |
544 | ||
545 | } | |
546 | ||
85e7652d | 547 | static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { |
f0fba2ad | 548 | .startup = kirkwood_i2s_startup, |
f9b95980 | 549 | .trigger = kirkwood_i2s_trigger, |
550 | .hw_params = kirkwood_i2s_hw_params, | |
551 | .set_fmt = kirkwood_i2s_set_fmt, | |
552 | }; | |
553 | ||
75b9b65e JFM |
554 | static struct snd_soc_dai_driver kirkwood_i2s_dai[2] = { |
555 | { | |
556 | .name = "i2s", | |
557 | .id = 0, | |
558 | .playback = { | |
559 | .channels_min = 1, | |
560 | .channels_max = 2, | |
561 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | | |
562 | SNDRV_PCM_RATE_96000, | |
563 | .formats = KIRKWOOD_I2S_FORMATS, | |
564 | }, | |
565 | .capture = { | |
566 | .channels_min = 1, | |
567 | .channels_max = 2, | |
568 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | | |
569 | SNDRV_PCM_RATE_96000, | |
570 | .formats = KIRKWOOD_I2S_FORMATS, | |
571 | }, | |
572 | .ops = &kirkwood_i2s_dai_ops, | |
573 | }, | |
574 | { | |
575 | .name = "spdif", | |
576 | .id = 1, | |
f9b95980 | 577 | .playback = { |
578 | .channels_min = 1, | |
579 | .channels_max = 2, | |
9e12cbd9 MB |
580 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
581 | SNDRV_PCM_RATE_96000, | |
1c195ddb | 582 | .formats = KIRKWOOD_SPDIF_FORMATS, |
363589bf | 583 | }, |
f9b95980 | 584 | .capture = { |
585 | .channels_min = 1, | |
586 | .channels_max = 2, | |
9e12cbd9 MB |
587 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | |
588 | SNDRV_PCM_RATE_96000, | |
1c195ddb | 589 | .formats = KIRKWOOD_SPDIF_FORMATS, |
363589bf RK |
590 | }, |
591 | .ops = &kirkwood_i2s_dai_ops, | |
75b9b65e | 592 | }, |
363589bf RK |
593 | }; |
594 | ||
75b9b65e JFM |
595 | static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk[2] = { |
596 | { | |
597 | .name = "i2s", | |
598 | .id = 0, | |
599 | .playback = { | |
600 | .channels_min = 1, | |
601 | .channels_max = 2, | |
02fc17c1 JFM |
602 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
603 | .rate_min = 5512, | |
604 | .rate_max = 192000, | |
75b9b65e JFM |
605 | .formats = KIRKWOOD_I2S_FORMATS, |
606 | }, | |
607 | .capture = { | |
608 | .channels_min = 1, | |
609 | .channels_max = 2, | |
02fc17c1 JFM |
610 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
611 | .rate_min = 5512, | |
612 | .rate_max = 192000, | |
75b9b65e JFM |
613 | .formats = KIRKWOOD_I2S_FORMATS, |
614 | }, | |
615 | .ops = &kirkwood_i2s_dai_ops, | |
616 | }, | |
617 | { | |
618 | .name = "spdif", | |
619 | .id = 1, | |
363589bf RK |
620 | .playback = { |
621 | .channels_min = 1, | |
622 | .channels_max = 2, | |
02fc17c1 JFM |
623 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
624 | .rate_min = 5512, | |
625 | .rate_max = 192000, | |
1c195ddb | 626 | .formats = KIRKWOOD_SPDIF_FORMATS, |
363589bf RK |
627 | }, |
628 | .capture = { | |
629 | .channels_min = 1, | |
630 | .channels_max = 2, | |
02fc17c1 JFM |
631 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
632 | .rate_min = 5512, | |
633 | .rate_max = 192000, | |
1c195ddb | 634 | .formats = KIRKWOOD_SPDIF_FORMATS, |
363589bf | 635 | }, |
f9b95980 | 636 | .ops = &kirkwood_i2s_dai_ops, |
75b9b65e | 637 | }, |
f9b95980 | 638 | }; |
f9b95980 | 639 | |
34e15fbd | 640 | static int kirkwood_i2s_dev_probe(struct platform_device *pdev) |
f9b95980 | 641 | { |
363589bf | 642 | struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data; |
75b9b65e | 643 | struct snd_soc_dai_driver *soc_dai = kirkwood_i2s_dai; |
f0fba2ad | 644 | struct kirkwood_dma_data *priv; |
eb632318 | 645 | struct device_node *np = pdev->dev.of_node; |
f9b95980 | 646 | int err; |
647 | ||
dbc517bf | 648 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
c7591edc | 649 | if (!priv) |
dbc517bf | 650 | return -ENOMEM; |
c7591edc | 651 | |
f0fba2ad | 652 | dev_set_drvdata(&pdev->dev, priv); |
f9b95980 | 653 | |
2adfc688 MW |
654 | if (of_device_is_compatible(np, "marvell,armada-380-audio")) |
655 | priv->io = devm_platform_ioremap_resource_byname(pdev, "i2s_regs"); | |
656 | else | |
657 | priv->io = devm_platform_ioremap_resource(pdev, 0); | |
b25b5aa0 TR |
658 | if (IS_ERR(priv->io)) |
659 | return PTR_ERR(priv->io); | |
f9b95980 | 660 | |
661 | priv->irq = platform_get_irq(pdev, 0); | |
cf9441ad | 662 | if (priv->irq < 0) |
e7b2e30a | 663 | return priv->irq; |
f9b95980 | 664 | |
2adfc688 MW |
665 | if (of_device_is_compatible(np, "marvell,armada-380-audio")) { |
666 | err = armada_38x_i2s_init_quirk(pdev, priv, soc_dai); | |
667 | if (err < 0) | |
668 | return err; | |
669 | /* Set initial pll frequency */ | |
670 | armada_38x_set_pll(priv->pll_config, 44100); | |
671 | } | |
672 | ||
eb632318 JFM |
673 | if (np) { |
674 | priv->burst = 128; /* might be 32 or 128 */ | |
675 | } else if (data) { | |
676 | priv->burst = data->burst; | |
677 | } else { | |
678 | dev_err(&pdev->dev, "no DT nor platform data ?!\n"); | |
dbc517bf | 679 | return -EINVAL; |
f9b95980 | 680 | } |
681 | ||
eb632318 | 682 | priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL); |
e919c716 AL |
683 | if (IS_ERR(priv->clk)) { |
684 | dev_err(&pdev->dev, "no clock\n"); | |
dbc517bf | 685 | return PTR_ERR(priv->clk); |
e919c716 | 686 | } |
dbc517bf | 687 | |
4734dc96 | 688 | priv->extclk = devm_clk_get(&pdev->dev, "extclk"); |
84aac6c7 JFM |
689 | if (IS_ERR(priv->extclk)) { |
690 | if (PTR_ERR(priv->extclk) == -EPROBE_DEFER) | |
691 | return -EPROBE_DEFER; | |
692 | } else { | |
aaa6d062 | 693 | if (clk_is_match(priv->extclk, priv->clk)) { |
af64d734 | 694 | devm_clk_put(&pdev->dev, priv->extclk); |
d8d11ba5 RK |
695 | priv->extclk = ERR_PTR(-EINVAL); |
696 | } else { | |
697 | dev_info(&pdev->dev, "found external clock\n"); | |
698 | clk_prepare_enable(priv->extclk); | |
99d8d3ba | 699 | soc_dai = kirkwood_i2s_dai_extclk; |
d8d11ba5 RK |
700 | } |
701 | } | |
702 | ||
4523817d RK |
703 | err = clk_prepare_enable(priv->clk); |
704 | if (err < 0) | |
705 | return err; | |
706 | ||
d8d11ba5 RK |
707 | /* Some sensible defaults - this reflects the powerup values */ |
708 | priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24; | |
709 | priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24; | |
710 | ||
711 | /* Select the burst size */ | |
eb632318 | 712 | if (priv->burst == 32) { |
d8d11ba5 RK |
713 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32; |
714 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32; | |
715 | } else { | |
716 | priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128; | |
717 | priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128; | |
718 | } | |
719 | ||
dc39596a | 720 | err = snd_soc_register_component(&pdev->dev, &kirkwood_soc_component, |
75b9b65e | 721 | soc_dai, 2); |
64ddf1f8 RK |
722 | if (err) { |
723 | dev_err(&pdev->dev, "snd_soc_register_component failed\n"); | |
724 | goto err_component; | |
725 | } | |
baffab28 | 726 | |
75b9b65e JFM |
727 | kirkwood_i2s_init(priv); |
728 | ||
64ddf1f8 | 729 | return 0; |
f98fc0f8 | 730 | |
64ddf1f8 | 731 | err_component: |
4734dc96 | 732 | if (!IS_ERR(priv->extclk)) |
363589bf | 733 | clk_disable_unprepare(priv->extclk); |
baffab28 | 734 | clk_disable_unprepare(priv->clk); |
dbc517bf | 735 | |
f9b95980 | 736 | return err; |
737 | } | |
738 | ||
8c078706 | 739 | static void kirkwood_i2s_dev_remove(struct platform_device *pdev) |
f9b95980 | 740 | { |
f0fba2ad LG |
741 | struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); |
742 | ||
dc39596a | 743 | snd_soc_unregister_component(&pdev->dev); |
4734dc96 | 744 | if (!IS_ERR(priv->extclk)) |
363589bf | 745 | clk_disable_unprepare(priv->extclk); |
e919c716 | 746 | clk_disable_unprepare(priv->clk); |
f9b95980 | 747 | } |
748 | ||
eb632318 | 749 | #ifdef CONFIG_OF |
7f2c52af | 750 | static const struct of_device_id mvebu_audio_of_match[] = { |
d098b2f0 TP |
751 | { .compatible = "marvell,kirkwood-audio" }, |
752 | { .compatible = "marvell,dove-audio" }, | |
9a0d5113 | 753 | { .compatible = "marvell,armada370-audio" }, |
2adfc688 | 754 | { .compatible = "marvell,armada-380-audio" }, |
eb632318 JFM |
755 | { } |
756 | }; | |
757 | MODULE_DEVICE_TABLE(of, mvebu_audio_of_match); | |
758 | #endif | |
759 | ||
f9b95980 | 760 | static struct platform_driver kirkwood_i2s_driver = { |
761 | .probe = kirkwood_i2s_dev_probe, | |
130af75b | 762 | .remove = kirkwood_i2s_dev_remove, |
f9b95980 | 763 | .driver = { |
764 | .name = DRV_NAME, | |
eb632318 | 765 | .of_match_table = of_match_ptr(mvebu_audio_of_match), |
f9b95980 | 766 | }, |
767 | }; | |
768 | ||
41b10225 | 769 | module_platform_driver(kirkwood_i2s_driver); |
f9b95980 | 770 | |
771 | /* Module information */ | |
69737897 | 772 | MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); |
f9b95980 | 773 | MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); |
774 | MODULE_LICENSE("GPL"); | |
64ddf1f8 | 775 | MODULE_ALIAS("platform:mvebu-audio"); |