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1 | /* |
2 | * wm8580.c -- WM8580 ALSA Soc Audio driver | |
3 | * | |
6f7cb44b | 4 | * Copyright 2008, 2009 Wolfson Microelectronics PLC. |
e88ba015 MB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | * | |
11 | * Notes: | |
12 | * The WM8580 is a multichannel codec with S/PDIF support, featuring six | |
13 | * DAC channels and two ADC channels. | |
14 | * | |
15 | * Currently only the primary audio interface is supported - S/PDIF and | |
16 | * the secondary audio interfaces are not. | |
17 | */ | |
18 | ||
19 | #include <linux/module.h> | |
20 | #include <linux/moduleparam.h> | |
e88ba015 MB |
21 | #include <linux/kernel.h> |
22 | #include <linux/init.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/pm.h> | |
25 | #include <linux/i2c.h> | |
26 | #include <linux/platform_device.h> | |
27 | #include <sound/core.h> | |
28 | #include <sound/pcm.h> | |
29 | #include <sound/pcm_params.h> | |
30 | #include <sound/soc.h> | |
31 | #include <sound/soc-dapm.h> | |
32 | #include <sound/tlv.h> | |
33 | #include <sound/initval.h> | |
34 | #include <asm/div64.h> | |
35 | ||
36 | #include "wm8580.h" | |
37 | ||
e88ba015 MB |
38 | /* WM8580 register space */ |
39 | #define WM8580_PLLA1 0x00 | |
40 | #define WM8580_PLLA2 0x01 | |
41 | #define WM8580_PLLA3 0x02 | |
42 | #define WM8580_PLLA4 0x03 | |
43 | #define WM8580_PLLB1 0x04 | |
44 | #define WM8580_PLLB2 0x05 | |
45 | #define WM8580_PLLB3 0x06 | |
46 | #define WM8580_PLLB4 0x07 | |
47 | #define WM8580_CLKSEL 0x08 | |
48 | #define WM8580_PAIF1 0x09 | |
49 | #define WM8580_PAIF2 0x0A | |
50 | #define WM8580_SAIF1 0x0B | |
51 | #define WM8580_PAIF3 0x0C | |
52 | #define WM8580_PAIF4 0x0D | |
53 | #define WM8580_SAIF2 0x0E | |
54 | #define WM8580_DAC_CONTROL1 0x0F | |
55 | #define WM8580_DAC_CONTROL2 0x10 | |
56 | #define WM8580_DAC_CONTROL3 0x11 | |
57 | #define WM8580_DAC_CONTROL4 0x12 | |
58 | #define WM8580_DAC_CONTROL5 0x13 | |
59 | #define WM8580_DIGITAL_ATTENUATION_DACL1 0x14 | |
60 | #define WM8580_DIGITAL_ATTENUATION_DACR1 0x15 | |
61 | #define WM8580_DIGITAL_ATTENUATION_DACL2 0x16 | |
62 | #define WM8580_DIGITAL_ATTENUATION_DACR2 0x17 | |
63 | #define WM8580_DIGITAL_ATTENUATION_DACL3 0x18 | |
64 | #define WM8580_DIGITAL_ATTENUATION_DACR3 0x19 | |
65 | #define WM8580_MASTER_DIGITAL_ATTENUATION 0x1C | |
66 | #define WM8580_ADC_CONTROL1 0x1D | |
67 | #define WM8580_SPDTXCHAN0 0x1E | |
68 | #define WM8580_SPDTXCHAN1 0x1F | |
69 | #define WM8580_SPDTXCHAN2 0x20 | |
70 | #define WM8580_SPDTXCHAN3 0x21 | |
71 | #define WM8580_SPDTXCHAN4 0x22 | |
72 | #define WM8580_SPDTXCHAN5 0x23 | |
73 | #define WM8580_SPDMODE 0x24 | |
74 | #define WM8580_INTMASK 0x25 | |
75 | #define WM8580_GPO1 0x26 | |
76 | #define WM8580_GPO2 0x27 | |
77 | #define WM8580_GPO3 0x28 | |
78 | #define WM8580_GPO4 0x29 | |
79 | #define WM8580_GPO5 0x2A | |
80 | #define WM8580_INTSTAT 0x2B | |
81 | #define WM8580_SPDRXCHAN1 0x2C | |
82 | #define WM8580_SPDRXCHAN2 0x2D | |
83 | #define WM8580_SPDRXCHAN3 0x2E | |
84 | #define WM8580_SPDRXCHAN4 0x2F | |
85 | #define WM8580_SPDRXCHAN5 0x30 | |
86 | #define WM8580_SPDSTAT 0x31 | |
87 | #define WM8580_PWRDN1 0x32 | |
88 | #define WM8580_PWRDN2 0x33 | |
89 | #define WM8580_READBACK 0x34 | |
90 | #define WM8580_RESET 0x35 | |
91 | ||
6f7cb44b MB |
92 | #define WM8580_MAX_REGISTER 0x35 |
93 | ||
e88ba015 MB |
94 | /* PLLB4 (register 7h) */ |
95 | #define WM8580_PLLB4_MCLKOUTSRC_MASK 0x60 | |
96 | #define WM8580_PLLB4_MCLKOUTSRC_PLLA 0x20 | |
97 | #define WM8580_PLLB4_MCLKOUTSRC_PLLB 0x40 | |
98 | #define WM8580_PLLB4_MCLKOUTSRC_OSC 0x60 | |
99 | ||
100 | #define WM8580_PLLB4_CLKOUTSRC_MASK 0x180 | |
101 | #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080 | |
102 | #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100 | |
103 | #define WM8580_PLLB4_CLKOUTSRC_OSCCLK 0x180 | |
104 | ||
105 | /* CLKSEL (register 8h) */ | |
106 | #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03 | |
107 | #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01 | |
108 | #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02 | |
109 | ||
110 | /* AIF control 1 (registers 9h-bh) */ | |
111 | #define WM8580_AIF_RATE_MASK 0x7 | |
112 | #define WM8580_AIF_RATE_128 0x0 | |
113 | #define WM8580_AIF_RATE_192 0x1 | |
114 | #define WM8580_AIF_RATE_256 0x2 | |
115 | #define WM8580_AIF_RATE_384 0x3 | |
116 | #define WM8580_AIF_RATE_512 0x4 | |
117 | #define WM8580_AIF_RATE_768 0x5 | |
118 | #define WM8580_AIF_RATE_1152 0x6 | |
119 | ||
120 | #define WM8580_AIF_BCLKSEL_MASK 0x18 | |
121 | #define WM8580_AIF_BCLKSEL_64 0x00 | |
122 | #define WM8580_AIF_BCLKSEL_128 0x08 | |
123 | #define WM8580_AIF_BCLKSEL_256 0x10 | |
124 | #define WM8580_AIF_BCLKSEL_SYSCLK 0x18 | |
125 | ||
126 | #define WM8580_AIF_MS 0x20 | |
127 | ||
128 | #define WM8580_AIF_CLKSRC_MASK 0xc0 | |
129 | #define WM8580_AIF_CLKSRC_PLLA 0x40 | |
130 | #define WM8580_AIF_CLKSRC_PLLB 0x40 | |
131 | #define WM8580_AIF_CLKSRC_MCLK 0xc0 | |
132 | ||
133 | /* AIF control 2 (registers ch-eh) */ | |
134 | #define WM8580_AIF_FMT_MASK 0x03 | |
135 | #define WM8580_AIF_FMT_RIGHTJ 0x00 | |
136 | #define WM8580_AIF_FMT_LEFTJ 0x01 | |
137 | #define WM8580_AIF_FMT_I2S 0x02 | |
138 | #define WM8580_AIF_FMT_DSP 0x03 | |
139 | ||
140 | #define WM8580_AIF_LENGTH_MASK 0x0c | |
141 | #define WM8580_AIF_LENGTH_16 0x00 | |
142 | #define WM8580_AIF_LENGTH_20 0x04 | |
143 | #define WM8580_AIF_LENGTH_24 0x08 | |
144 | #define WM8580_AIF_LENGTH_32 0x0c | |
145 | ||
146 | #define WM8580_AIF_LRP 0x10 | |
147 | #define WM8580_AIF_BCP 0x20 | |
148 | ||
149 | /* Powerdown Register 1 (register 32h) */ | |
150 | #define WM8580_PWRDN1_PWDN 0x001 | |
151 | #define WM8580_PWRDN1_ALLDACPD 0x040 | |
152 | ||
153 | /* Powerdown Register 2 (register 33h) */ | |
154 | #define WM8580_PWRDN2_OSSCPD 0x001 | |
155 | #define WM8580_PWRDN2_PLLAPD 0x002 | |
156 | #define WM8580_PWRDN2_PLLBPD 0x004 | |
157 | #define WM8580_PWRDN2_SPDIFPD 0x008 | |
158 | #define WM8580_PWRDN2_SPDIFTXD 0x010 | |
159 | #define WM8580_PWRDN2_SPDIFRXD 0x020 | |
160 | ||
161 | #define WM8580_DAC_CONTROL5_MUTEALL 0x10 | |
162 | ||
163 | /* | |
164 | * wm8580 register cache | |
165 | * We can't read the WM8580 register space when we | |
166 | * are using 2 wire for device control, so we cache them instead. | |
167 | */ | |
168 | static const u16 wm8580_reg[] = { | |
169 | 0x0121, 0x017e, 0x007d, 0x0014, /*R3*/ | |
170 | 0x0121, 0x017e, 0x007d, 0x0194, /*R7*/ | |
171 | 0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/ | |
172 | 0x0182, 0x0082, 0x000a, 0x0024, /*R15*/ | |
173 | 0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/ | |
174 | 0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/ | |
175 | 0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/ | |
176 | 0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/ | |
177 | 0x0000, 0x0000, 0x0031, 0x000b, /*R35*/ | |
178 | 0x0039, 0x0000, 0x0010, 0x0032, /*R39*/ | |
179 | 0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/ | |
180 | 0x0000, 0x0000, 0x0000, 0x0000, /*R47*/ | |
181 | 0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/ | |
182 | 0x0000, 0x0000 /*R53*/ | |
183 | }; | |
184 | ||
6f7cb44b MB |
185 | struct pll_state { |
186 | unsigned int in; | |
187 | unsigned int out; | |
188 | }; | |
189 | ||
190 | /* codec private data */ | |
191 | struct wm8580_priv { | |
192 | struct snd_soc_codec codec; | |
193 | u16 reg_cache[WM8580_MAX_REGISTER + 1]; | |
194 | struct pll_state a; | |
195 | struct pll_state b; | |
196 | }; | |
197 | ||
198 | ||
e88ba015 MB |
199 | /* |
200 | * read wm8580 register cache | |
201 | */ | |
202 | static inline unsigned int wm8580_read_reg_cache(struct snd_soc_codec *codec, | |
203 | unsigned int reg) | |
204 | { | |
205 | u16 *cache = codec->reg_cache; | |
91432e97 | 206 | BUG_ON(reg >= ARRAY_SIZE(wm8580_reg)); |
e88ba015 MB |
207 | return cache[reg]; |
208 | } | |
209 | ||
210 | /* | |
211 | * write wm8580 register cache | |
212 | */ | |
213 | static inline void wm8580_write_reg_cache(struct snd_soc_codec *codec, | |
214 | unsigned int reg, unsigned int value) | |
215 | { | |
216 | u16 *cache = codec->reg_cache; | |
217 | ||
218 | cache[reg] = value; | |
219 | } | |
220 | ||
221 | /* | |
222 | * write to the WM8580 register space | |
223 | */ | |
224 | static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg, | |
225 | unsigned int value) | |
226 | { | |
227 | u8 data[2]; | |
228 | ||
91432e97 | 229 | BUG_ON(reg >= ARRAY_SIZE(wm8580_reg)); |
e88ba015 MB |
230 | |
231 | /* Registers are 9 bits wide */ | |
232 | value &= 0x1ff; | |
233 | ||
234 | switch (reg) { | |
235 | case WM8580_RESET: | |
236 | /* Uncached */ | |
237 | break; | |
238 | default: | |
239 | if (value == wm8580_read_reg_cache(codec, reg)) | |
240 | return 0; | |
241 | } | |
242 | ||
243 | /* data is | |
244 | * D15..D9 WM8580 register offset | |
245 | * D8...D0 register data | |
246 | */ | |
247 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
248 | data[1] = value & 0x00ff; | |
249 | ||
250 | wm8580_write_reg_cache(codec, reg, value); | |
251 | if (codec->hw_write(codec->control_data, data, 2) == 2) | |
252 | return 0; | |
253 | else | |
254 | return -EIO; | |
255 | } | |
256 | ||
257 | static inline unsigned int wm8580_read(struct snd_soc_codec *codec, | |
258 | unsigned int reg) | |
259 | { | |
260 | switch (reg) { | |
261 | default: | |
262 | return wm8580_read_reg_cache(codec, reg); | |
263 | } | |
264 | } | |
265 | ||
266 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); | |
267 | ||
268 | static int wm8580_out_vu(struct snd_kcontrol *kcontrol, | |
269 | struct snd_ctl_elem_value *ucontrol) | |
270 | { | |
271 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
272 | int reg = kcontrol->private_value & 0xff; | |
273 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
274 | int ret; | |
275 | u16 val; | |
276 | ||
277 | /* Clear the register cache so we write without VU set */ | |
278 | wm8580_write_reg_cache(codec, reg, 0); | |
279 | wm8580_write_reg_cache(codec, reg2, 0); | |
280 | ||
281 | ret = snd_soc_put_volsw_2r(kcontrol, ucontrol); | |
282 | if (ret < 0) | |
283 | return ret; | |
284 | ||
285 | /* Now write again with the volume update bit set */ | |
286 | val = wm8580_read_reg_cache(codec, reg); | |
287 | wm8580_write(codec, reg, val | 0x0100); | |
288 | ||
289 | val = wm8580_read_reg_cache(codec, reg2); | |
290 | wm8580_write(codec, reg2, val | 0x0100); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | #define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \ | |
296 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ | |
297 | .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ | |
298 | SNDRV_CTL_ELEM_ACCESS_READWRITE, \ | |
299 | .tlv.p = (tlv_array), \ | |
300 | .info = snd_soc_info_volsw_2r, \ | |
301 | .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \ | |
302 | .private_value = (reg_left) | ((shift) << 8) | \ | |
303 | ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) } | |
304 | ||
305 | static const struct snd_kcontrol_new wm8580_snd_controls[] = { | |
306 | SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume", | |
307 | WM8580_DIGITAL_ATTENUATION_DACL1, | |
308 | WM8580_DIGITAL_ATTENUATION_DACR1, | |
309 | 0, 0xff, 0, dac_tlv), | |
310 | SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume", | |
311 | WM8580_DIGITAL_ATTENUATION_DACL2, | |
312 | WM8580_DIGITAL_ATTENUATION_DACR2, | |
313 | 0, 0xff, 0, dac_tlv), | |
314 | SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume", | |
315 | WM8580_DIGITAL_ATTENUATION_DACL3, | |
316 | WM8580_DIGITAL_ATTENUATION_DACR3, | |
317 | 0, 0xff, 0, dac_tlv), | |
318 | ||
319 | SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0), | |
320 | SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0), | |
321 | SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0), | |
322 | ||
323 | SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4, 0, 1, 1, 0), | |
324 | SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4, 2, 3, 1, 0), | |
325 | SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4, 4, 5, 1, 0), | |
326 | ||
327 | SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0), | |
328 | SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0), | |
329 | SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0), | |
330 | SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0), | |
331 | ||
332 | SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0), | |
333 | SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0), | |
334 | }; | |
335 | ||
e88ba015 MB |
336 | static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = { |
337 | SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1), | |
338 | SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1), | |
339 | SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1), | |
340 | ||
341 | SND_SOC_DAPM_OUTPUT("VOUT1L"), | |
342 | SND_SOC_DAPM_OUTPUT("VOUT1R"), | |
343 | SND_SOC_DAPM_OUTPUT("VOUT2L"), | |
344 | SND_SOC_DAPM_OUTPUT("VOUT2R"), | |
345 | SND_SOC_DAPM_OUTPUT("VOUT3L"), | |
346 | SND_SOC_DAPM_OUTPUT("VOUT3R"), | |
347 | ||
348 | SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1), | |
349 | ||
350 | SND_SOC_DAPM_INPUT("AINL"), | |
351 | SND_SOC_DAPM_INPUT("AINR"), | |
352 | }; | |
353 | ||
354 | static const struct snd_soc_dapm_route audio_map[] = { | |
355 | { "VOUT1L", NULL, "DAC1" }, | |
356 | { "VOUT1R", NULL, "DAC1" }, | |
357 | ||
358 | { "VOUT2L", NULL, "DAC2" }, | |
359 | { "VOUT2R", NULL, "DAC2" }, | |
360 | ||
361 | { "VOUT3L", NULL, "DAC3" }, | |
362 | { "VOUT3R", NULL, "DAC3" }, | |
363 | ||
364 | { "ADC", NULL, "AINL" }, | |
365 | { "ADC", NULL, "AINR" }, | |
366 | }; | |
367 | ||
368 | static int wm8580_add_widgets(struct snd_soc_codec *codec) | |
369 | { | |
370 | snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets, | |
371 | ARRAY_SIZE(wm8580_dapm_widgets)); | |
372 | ||
373 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
374 | ||
375 | snd_soc_dapm_new_widgets(codec); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | /* PLL divisors */ | |
380 | struct _pll_div { | |
381 | u32 prescale:1; | |
382 | u32 postscale:1; | |
383 | u32 freqmode:2; | |
384 | u32 n:4; | |
385 | u32 k:24; | |
386 | }; | |
387 | ||
388 | /* The size in bits of the pll divide */ | |
389 | #define FIXED_PLL_SIZE (1 << 22) | |
390 | ||
391 | /* PLL rate to output rate divisions */ | |
392 | static struct { | |
393 | unsigned int div; | |
394 | unsigned int freqmode; | |
395 | unsigned int postscale; | |
396 | } post_table[] = { | |
397 | { 2, 0, 0 }, | |
398 | { 4, 0, 1 }, | |
399 | { 4, 1, 0 }, | |
400 | { 8, 1, 1 }, | |
401 | { 8, 2, 0 }, | |
402 | { 16, 2, 1 }, | |
403 | { 12, 3, 0 }, | |
404 | { 24, 3, 1 } | |
405 | }; | |
406 | ||
407 | static int pll_factors(struct _pll_div *pll_div, unsigned int target, | |
408 | unsigned int source) | |
409 | { | |
410 | u64 Kpart; | |
411 | unsigned int K, Ndiv, Nmod; | |
412 | int i; | |
413 | ||
414 | pr_debug("wm8580: PLL %dHz->%dHz\n", source, target); | |
415 | ||
416 | /* Scale the output frequency up; the PLL should run in the | |
417 | * region of 90-100MHz. | |
418 | */ | |
419 | for (i = 0; i < ARRAY_SIZE(post_table); i++) { | |
420 | if (target * post_table[i].div >= 90000000 && | |
421 | target * post_table[i].div <= 100000000) { | |
422 | pll_div->freqmode = post_table[i].freqmode; | |
423 | pll_div->postscale = post_table[i].postscale; | |
424 | target *= post_table[i].div; | |
425 | break; | |
426 | } | |
427 | } | |
428 | ||
429 | if (i == ARRAY_SIZE(post_table)) { | |
430 | printk(KERN_ERR "wm8580: Unable to scale output frequency " | |
431 | "%u\n", target); | |
432 | return -EINVAL; | |
433 | } | |
434 | ||
435 | Ndiv = target / source; | |
436 | ||
437 | if (Ndiv < 5) { | |
438 | source /= 2; | |
439 | pll_div->prescale = 1; | |
440 | Ndiv = target / source; | |
441 | } else | |
442 | pll_div->prescale = 0; | |
443 | ||
444 | if ((Ndiv < 5) || (Ndiv > 13)) { | |
445 | printk(KERN_ERR | |
446 | "WM8580 N=%d outside supported range\n", Ndiv); | |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | pll_div->n = Ndiv; | |
451 | Nmod = target % source; | |
452 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
453 | ||
454 | do_div(Kpart, source); | |
455 | ||
456 | K = Kpart & 0xFFFFFFFF; | |
457 | ||
458 | pll_div->k = K; | |
459 | ||
460 | pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n", | |
461 | pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode, | |
462 | pll_div->postscale); | |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
467 | static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, | |
468 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
469 | { | |
470 | int offset; | |
471 | struct snd_soc_codec *codec = codec_dai->codec; | |
472 | struct wm8580_priv *wm8580 = codec->private_data; | |
473 | struct pll_state *state; | |
474 | struct _pll_div pll_div; | |
475 | unsigned int reg; | |
476 | unsigned int pwr_mask; | |
477 | int ret; | |
478 | ||
479 | /* GCC isn't able to work out the ifs below for initialising/using | |
480 | * pll_div so suppress warnings. | |
481 | */ | |
482 | memset(&pll_div, 0, sizeof(pll_div)); | |
483 | ||
484 | switch (pll_id) { | |
485 | case WM8580_PLLA: | |
486 | state = &wm8580->a; | |
487 | offset = 0; | |
488 | pwr_mask = WM8580_PWRDN2_PLLAPD; | |
489 | break; | |
490 | case WM8580_PLLB: | |
491 | state = &wm8580->b; | |
492 | offset = 4; | |
493 | pwr_mask = WM8580_PWRDN2_PLLBPD; | |
494 | break; | |
495 | default: | |
496 | return -ENODEV; | |
497 | } | |
498 | ||
499 | if (freq_in && freq_out) { | |
500 | ret = pll_factors(&pll_div, freq_out, freq_in); | |
501 | if (ret != 0) | |
502 | return ret; | |
503 | } | |
504 | ||
505 | state->in = freq_in; | |
506 | state->out = freq_out; | |
507 | ||
508 | /* Always disable the PLL - it is not safe to leave it running | |
509 | * while reprogramming it. | |
510 | */ | |
511 | reg = wm8580_read(codec, WM8580_PWRDN2); | |
512 | wm8580_write(codec, WM8580_PWRDN2, reg | pwr_mask); | |
513 | ||
514 | if (!freq_in || !freq_out) | |
515 | return 0; | |
516 | ||
517 | wm8580_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff); | |
518 | wm8580_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0xff); | |
519 | wm8580_write(codec, WM8580_PLLA3 + offset, | |
520 | (pll_div.k >> 18 & 0xf) | (pll_div.n << 4)); | |
521 | ||
522 | reg = wm8580_read(codec, WM8580_PLLA4 + offset); | |
523 | reg &= ~0x3f; | |
524 | reg |= pll_div.prescale | pll_div.postscale << 1 | | |
525 | pll_div.freqmode << 4; | |
526 | ||
527 | wm8580_write(codec, WM8580_PLLA4 + offset, reg); | |
528 | ||
529 | /* All done, turn it on */ | |
530 | reg = wm8580_read(codec, WM8580_PWRDN2); | |
531 | wm8580_write(codec, WM8580_PWRDN2, reg & ~pwr_mask); | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
536 | /* | |
537 | * Set PCM DAI bit size and sample rate. | |
538 | */ | |
539 | static int wm8580_paif_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
540 | struct snd_pcm_hw_params *params, |
541 | struct snd_soc_dai *dai) | |
e88ba015 MB |
542 | { |
543 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
e88ba015 | 544 | struct snd_soc_device *socdev = rtd->socdev; |
6627a653 | 545 | struct snd_soc_codec *codec = socdev->card->codec; |
dee89c4d | 546 | u16 paifb = wm8580_read(codec, WM8580_PAIF3 + dai->id); |
e88ba015 MB |
547 | |
548 | paifb &= ~WM8580_AIF_LENGTH_MASK; | |
549 | /* bit size */ | |
550 | switch (params_format(params)) { | |
551 | case SNDRV_PCM_FORMAT_S16_LE: | |
552 | break; | |
553 | case SNDRV_PCM_FORMAT_S20_3LE: | |
554 | paifb |= WM8580_AIF_LENGTH_20; | |
555 | break; | |
556 | case SNDRV_PCM_FORMAT_S24_LE: | |
557 | paifb |= WM8580_AIF_LENGTH_24; | |
558 | break; | |
559 | case SNDRV_PCM_FORMAT_S32_LE: | |
560 | paifb |= WM8580_AIF_LENGTH_24; | |
561 | break; | |
562 | default: | |
563 | return -EINVAL; | |
564 | } | |
565 | ||
dee89c4d | 566 | wm8580_write(codec, WM8580_PAIF3 + dai->id, paifb); |
e88ba015 MB |
567 | return 0; |
568 | } | |
569 | ||
570 | static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai, | |
571 | unsigned int fmt) | |
572 | { | |
573 | struct snd_soc_codec *codec = codec_dai->codec; | |
574 | unsigned int aifa; | |
575 | unsigned int aifb; | |
576 | int can_invert_lrclk; | |
577 | ||
578 | aifa = wm8580_read(codec, WM8580_PAIF1 + codec_dai->id); | |
579 | aifb = wm8580_read(codec, WM8580_PAIF3 + codec_dai->id); | |
580 | ||
581 | aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP); | |
582 | ||
583 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
584 | case SND_SOC_DAIFMT_CBS_CFS: | |
585 | aifa &= ~WM8580_AIF_MS; | |
586 | break; | |
587 | case SND_SOC_DAIFMT_CBM_CFM: | |
588 | aifa |= WM8580_AIF_MS; | |
589 | break; | |
590 | default: | |
591 | return -EINVAL; | |
592 | } | |
593 | ||
594 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
595 | case SND_SOC_DAIFMT_I2S: | |
596 | can_invert_lrclk = 1; | |
597 | aifb |= WM8580_AIF_FMT_I2S; | |
598 | break; | |
599 | case SND_SOC_DAIFMT_RIGHT_J: | |
600 | can_invert_lrclk = 1; | |
601 | aifb |= WM8580_AIF_FMT_RIGHTJ; | |
602 | break; | |
603 | case SND_SOC_DAIFMT_LEFT_J: | |
604 | can_invert_lrclk = 1; | |
605 | aifb |= WM8580_AIF_FMT_LEFTJ; | |
606 | break; | |
607 | case SND_SOC_DAIFMT_DSP_A: | |
608 | can_invert_lrclk = 0; | |
609 | aifb |= WM8580_AIF_FMT_DSP; | |
610 | break; | |
611 | case SND_SOC_DAIFMT_DSP_B: | |
612 | can_invert_lrclk = 0; | |
613 | aifb |= WM8580_AIF_FMT_DSP; | |
614 | aifb |= WM8580_AIF_LRP; | |
615 | break; | |
616 | default: | |
617 | return -EINVAL; | |
618 | } | |
619 | ||
620 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
621 | case SND_SOC_DAIFMT_NB_NF: | |
622 | break; | |
623 | ||
624 | case SND_SOC_DAIFMT_IB_IF: | |
625 | if (!can_invert_lrclk) | |
626 | return -EINVAL; | |
627 | aifb |= WM8580_AIF_BCP; | |
628 | aifb |= WM8580_AIF_LRP; | |
629 | break; | |
630 | ||
631 | case SND_SOC_DAIFMT_IB_NF: | |
632 | aifb |= WM8580_AIF_BCP; | |
633 | break; | |
634 | ||
635 | case SND_SOC_DAIFMT_NB_IF: | |
636 | if (!can_invert_lrclk) | |
637 | return -EINVAL; | |
638 | aifb |= WM8580_AIF_LRP; | |
639 | break; | |
640 | ||
641 | default: | |
642 | return -EINVAL; | |
643 | } | |
644 | ||
645 | wm8580_write(codec, WM8580_PAIF1 + codec_dai->id, aifa); | |
646 | wm8580_write(codec, WM8580_PAIF3 + codec_dai->id, aifb); | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
652 | int div_id, int div) | |
653 | { | |
654 | struct snd_soc_codec *codec = codec_dai->codec; | |
655 | unsigned int reg; | |
656 | ||
657 | switch (div_id) { | |
658 | case WM8580_MCLK: | |
659 | reg = wm8580_read(codec, WM8580_PLLB4); | |
660 | reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK; | |
661 | ||
662 | switch (div) { | |
663 | case WM8580_CLKSRC_MCLK: | |
664 | /* Input */ | |
665 | break; | |
666 | ||
667 | case WM8580_CLKSRC_PLLA: | |
668 | reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA; | |
669 | break; | |
670 | case WM8580_CLKSRC_PLLB: | |
671 | reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB; | |
672 | break; | |
673 | ||
674 | case WM8580_CLKSRC_OSC: | |
675 | reg |= WM8580_PLLB4_MCLKOUTSRC_OSC; | |
676 | break; | |
677 | ||
678 | default: | |
679 | return -EINVAL; | |
680 | } | |
681 | wm8580_write(codec, WM8580_PLLB4, reg); | |
682 | break; | |
683 | ||
684 | case WM8580_DAC_CLKSEL: | |
685 | reg = wm8580_read(codec, WM8580_CLKSEL); | |
686 | reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK; | |
687 | ||
688 | switch (div) { | |
689 | case WM8580_CLKSRC_MCLK: | |
690 | break; | |
691 | ||
692 | case WM8580_CLKSRC_PLLA: | |
693 | reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA; | |
694 | break; | |
695 | ||
696 | case WM8580_CLKSRC_PLLB: | |
697 | reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB; | |
698 | break; | |
699 | ||
700 | default: | |
701 | return -EINVAL; | |
702 | } | |
703 | wm8580_write(codec, WM8580_CLKSEL, reg); | |
704 | break; | |
705 | ||
706 | case WM8580_CLKOUTSRC: | |
707 | reg = wm8580_read(codec, WM8580_PLLB4); | |
708 | reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK; | |
709 | ||
710 | switch (div) { | |
711 | case WM8580_CLKSRC_NONE: | |
712 | break; | |
713 | ||
714 | case WM8580_CLKSRC_PLLA: | |
715 | reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK; | |
716 | break; | |
717 | ||
718 | case WM8580_CLKSRC_PLLB: | |
719 | reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK; | |
720 | break; | |
721 | ||
722 | case WM8580_CLKSRC_OSC: | |
723 | reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK; | |
724 | break; | |
725 | ||
726 | default: | |
727 | return -EINVAL; | |
728 | } | |
729 | wm8580_write(codec, WM8580_PLLB4, reg); | |
730 | break; | |
731 | ||
732 | default: | |
733 | return -EINVAL; | |
734 | } | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute) | |
740 | { | |
741 | struct snd_soc_codec *codec = codec_dai->codec; | |
742 | unsigned int reg; | |
743 | ||
744 | reg = wm8580_read(codec, WM8580_DAC_CONTROL5); | |
745 | ||
746 | if (mute) | |
747 | reg |= WM8580_DAC_CONTROL5_MUTEALL; | |
748 | else | |
749 | reg &= ~WM8580_DAC_CONTROL5_MUTEALL; | |
750 | ||
751 | wm8580_write(codec, WM8580_DAC_CONTROL5, reg); | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | static int wm8580_set_bias_level(struct snd_soc_codec *codec, | |
757 | enum snd_soc_bias_level level) | |
758 | { | |
759 | u16 reg; | |
760 | switch (level) { | |
761 | case SND_SOC_BIAS_ON: | |
762 | case SND_SOC_BIAS_PREPARE: | |
6f7cb44b MB |
763 | break; |
764 | ||
e88ba015 | 765 | case SND_SOC_BIAS_STANDBY: |
6f7cb44b MB |
766 | if (codec->bias_level == SND_SOC_BIAS_OFF) { |
767 | /* Power up and get individual control of the DACs */ | |
768 | reg = wm8580_read(codec, WM8580_PWRDN1); | |
769 | reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD); | |
770 | wm8580_write(codec, WM8580_PWRDN1, reg); | |
771 | ||
772 | /* Make VMID high impedence */ | |
773 | reg = wm8580_read(codec, WM8580_ADC_CONTROL1); | |
774 | reg &= ~0x100; | |
775 | wm8580_write(codec, WM8580_ADC_CONTROL1, reg); | |
776 | } | |
e88ba015 | 777 | break; |
6f7cb44b | 778 | |
e88ba015 MB |
779 | case SND_SOC_BIAS_OFF: |
780 | reg = wm8580_read(codec, WM8580_PWRDN1); | |
781 | wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN); | |
782 | break; | |
783 | } | |
784 | codec->bias_level = level; | |
785 | return 0; | |
786 | } | |
787 | ||
788 | #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
789 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
790 | ||
6335d055 EM |
791 | static struct snd_soc_dai_ops wm8580_dai_ops_playback = { |
792 | .hw_params = wm8580_paif_hw_params, | |
793 | .set_fmt = wm8580_set_paif_dai_fmt, | |
794 | .set_clkdiv = wm8580_set_dai_clkdiv, | |
795 | .set_pll = wm8580_set_dai_pll, | |
796 | .digital_mute = wm8580_digital_mute, | |
797 | }; | |
798 | ||
799 | static struct snd_soc_dai_ops wm8580_dai_ops_capture = { | |
800 | .hw_params = wm8580_paif_hw_params, | |
801 | .set_fmt = wm8580_set_paif_dai_fmt, | |
802 | .set_clkdiv = wm8580_set_dai_clkdiv, | |
803 | .set_pll = wm8580_set_dai_pll, | |
804 | }; | |
805 | ||
e88ba015 MB |
806 | struct snd_soc_dai wm8580_dai[] = { |
807 | { | |
808 | .name = "WM8580 PAIFRX", | |
809 | .id = 0, | |
810 | .playback = { | |
811 | .stream_name = "Playback", | |
812 | .channels_min = 1, | |
813 | .channels_max = 6, | |
814 | .rates = SNDRV_PCM_RATE_8000_192000, | |
815 | .formats = WM8580_FORMATS, | |
816 | }, | |
6335d055 | 817 | .ops = &wm8580_dai_ops_playback, |
e88ba015 MB |
818 | }, |
819 | { | |
820 | .name = "WM8580 PAIFTX", | |
821 | .id = 1, | |
822 | .capture = { | |
823 | .stream_name = "Capture", | |
824 | .channels_min = 2, | |
825 | .channels_max = 2, | |
826 | .rates = SNDRV_PCM_RATE_8000_192000, | |
827 | .formats = WM8580_FORMATS, | |
828 | }, | |
6335d055 | 829 | .ops = &wm8580_dai_ops_capture, |
e88ba015 MB |
830 | }, |
831 | }; | |
832 | EXPORT_SYMBOL_GPL(wm8580_dai); | |
833 | ||
6f7cb44b MB |
834 | static struct snd_soc_codec *wm8580_codec; |
835 | ||
836 | static int wm8580_probe(struct platform_device *pdev) | |
e88ba015 | 837 | { |
6f7cb44b MB |
838 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
839 | struct snd_soc_codec *codec; | |
e88ba015 MB |
840 | int ret = 0; |
841 | ||
6f7cb44b MB |
842 | if (wm8580_codec == NULL) { |
843 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
844 | return -ENODEV; | |
845 | } | |
e88ba015 | 846 | |
6f7cb44b MB |
847 | socdev->card->codec = wm8580_codec; |
848 | codec = wm8580_codec; | |
e88ba015 MB |
849 | |
850 | /* register pcms */ | |
6f7cb44b | 851 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
e88ba015 | 852 | if (ret < 0) { |
6f7cb44b | 853 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
e88ba015 MB |
854 | goto pcm_err; |
855 | } | |
856 | ||
3e8e1952 | 857 | snd_soc_add_controls(codec, wm8580_snd_controls, |
6f7cb44b | 858 | ARRAY_SIZE(wm8580_snd_controls)); |
e88ba015 | 859 | wm8580_add_widgets(codec); |
968a6025 | 860 | ret = snd_soc_init_card(socdev); |
e88ba015 | 861 | if (ret < 0) { |
6f7cb44b | 862 | dev_err(codec->dev, "failed to register card: %d\n", ret); |
e88ba015 MB |
863 | goto card_err; |
864 | } | |
6f7cb44b | 865 | |
e88ba015 MB |
866 | return ret; |
867 | ||
868 | card_err: | |
869 | snd_soc_free_pcms(socdev); | |
870 | snd_soc_dapm_free(socdev); | |
871 | pcm_err: | |
e88ba015 MB |
872 | return ret; |
873 | } | |
874 | ||
6f7cb44b MB |
875 | /* power down chip */ |
876 | static int wm8580_remove(struct platform_device *pdev) | |
877 | { | |
878 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
e88ba015 | 879 | |
6f7cb44b MB |
880 | snd_soc_free_pcms(socdev); |
881 | snd_soc_dapm_free(socdev); | |
e88ba015 | 882 | |
6f7cb44b MB |
883 | return 0; |
884 | } | |
885 | ||
886 | struct snd_soc_codec_device soc_codec_dev_wm8580 = { | |
887 | .probe = wm8580_probe, | |
888 | .remove = wm8580_remove, | |
889 | }; | |
890 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580); | |
891 | ||
892 | static int wm8580_register(struct wm8580_priv *wm8580) | |
893 | { | |
894 | int ret, i; | |
895 | struct snd_soc_codec *codec = &wm8580->codec; | |
896 | ||
897 | if (wm8580_codec) { | |
898 | dev_err(codec->dev, "Another WM8580 is registered\n"); | |
899 | ret = -EINVAL; | |
900 | goto err; | |
901 | } | |
902 | ||
903 | mutex_init(&codec->mutex); | |
904 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
905 | INIT_LIST_HEAD(&codec->dapm_paths); | |
906 | ||
907 | codec->private_data = wm8580; | |
908 | codec->name = "WM8580"; | |
909 | codec->owner = THIS_MODULE; | |
910 | codec->read = wm8580_read_reg_cache; | |
911 | codec->write = wm8580_write; | |
912 | codec->bias_level = SND_SOC_BIAS_OFF; | |
913 | codec->set_bias_level = wm8580_set_bias_level; | |
914 | codec->dai = wm8580_dai; | |
915 | codec->num_dai = ARRAY_SIZE(wm8580_dai); | |
916 | codec->reg_cache_size = ARRAY_SIZE(wm8580->reg_cache); | |
917 | codec->reg_cache = &wm8580->reg_cache; | |
918 | ||
919 | memcpy(codec->reg_cache, wm8580_reg, sizeof(wm8580_reg)); | |
920 | ||
921 | /* Get the codec into a known state */ | |
922 | ret = wm8580_write(codec, WM8580_RESET, 0); | |
923 | if (ret != 0) { | |
924 | dev_err(codec->dev, "Failed to reset codec: %d\n", ret); | |
925 | goto err; | |
926 | } | |
927 | ||
928 | for (i = 0; i < ARRAY_SIZE(wm8580_dai); i++) | |
929 | wm8580_dai[i].dev = codec->dev; | |
930 | ||
931 | wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
e88ba015 | 932 | |
6f7cb44b MB |
933 | wm8580_codec = codec; |
934 | ||
935 | ret = snd_soc_register_codec(codec); | |
936 | if (ret != 0) { | |
937 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
938 | goto err; | |
939 | } | |
940 | ||
941 | ret = snd_soc_register_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai)); | |
942 | if (ret != 0) { | |
943 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
944 | goto err_codec; | |
945 | } | |
946 | ||
947 | return 0; | |
948 | ||
949 | err_codec: | |
950 | snd_soc_unregister_codec(codec); | |
951 | err: | |
952 | kfree(wm8580); | |
953 | return ret; | |
954 | } | |
955 | ||
956 | static void wm8580_unregister(struct wm8580_priv *wm8580) | |
957 | { | |
958 | wm8580_set_bias_level(&wm8580->codec, SND_SOC_BIAS_OFF); | |
959 | snd_soc_unregister_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai)); | |
960 | snd_soc_unregister_codec(&wm8580->codec); | |
961 | kfree(wm8580); | |
962 | wm8580_codec = NULL; | |
963 | } | |
964 | ||
965 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
17be5522 JD |
966 | static int wm8580_i2c_probe(struct i2c_client *i2c, |
967 | const struct i2c_device_id *id) | |
e88ba015 | 968 | { |
6f7cb44b MB |
969 | struct wm8580_priv *wm8580; |
970 | struct snd_soc_codec *codec; | |
971 | ||
972 | wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL); | |
973 | if (wm8580 == NULL) | |
974 | return -ENOMEM; | |
975 | ||
976 | codec = &wm8580->codec; | |
977 | codec->hw_write = (hw_write_t)i2c_master_send; | |
e88ba015 | 978 | |
6f7cb44b | 979 | i2c_set_clientdata(i2c, wm8580); |
e88ba015 MB |
980 | codec->control_data = i2c; |
981 | ||
6f7cb44b MB |
982 | codec->dev = &i2c->dev; |
983 | ||
984 | return wm8580_register(wm8580); | |
e88ba015 MB |
985 | } |
986 | ||
17be5522 | 987 | static int wm8580_i2c_remove(struct i2c_client *client) |
e88ba015 | 988 | { |
6f7cb44b MB |
989 | struct wm8580_priv *wm8580 = i2c_get_clientdata(client); |
990 | wm8580_unregister(wm8580); | |
e88ba015 MB |
991 | return 0; |
992 | } | |
993 | ||
17be5522 JD |
994 | static const struct i2c_device_id wm8580_i2c_id[] = { |
995 | { "wm8580", 0 }, | |
996 | { } | |
997 | }; | |
998 | MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id); | |
e88ba015 | 999 | |
e88ba015 MB |
1000 | static struct i2c_driver wm8580_i2c_driver = { |
1001 | .driver = { | |
6f7cb44b | 1002 | .name = "wm8580", |
e88ba015 MB |
1003 | .owner = THIS_MODULE, |
1004 | }, | |
17be5522 JD |
1005 | .probe = wm8580_i2c_probe, |
1006 | .remove = wm8580_i2c_remove, | |
1007 | .id_table = wm8580_i2c_id, | |
e88ba015 | 1008 | }; |
6f7cb44b | 1009 | #endif |
e88ba015 | 1010 | |
6f7cb44b | 1011 | static int __init wm8580_modinit(void) |
17be5522 | 1012 | { |
17be5522 JD |
1013 | int ret; |
1014 | ||
6f7cb44b | 1015 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
17be5522 JD |
1016 | ret = i2c_add_driver(&wm8580_i2c_driver); |
1017 | if (ret != 0) { | |
6f7cb44b | 1018 | pr_err("Failed to register WM8580 I2C driver: %d\n", ret); |
e88ba015 | 1019 | } |
e88ba015 | 1020 | #endif |
e88ba015 MB |
1021 | |
1022 | return 0; | |
1023 | } | |
64089b84 MB |
1024 | module_init(wm8580_modinit); |
1025 | ||
1026 | static void __exit wm8580_exit(void) | |
1027 | { | |
6f7cb44b MB |
1028 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
1029 | i2c_del_driver(&wm8580_i2c_driver); | |
1030 | #endif | |
64089b84 MB |
1031 | } |
1032 | module_exit(wm8580_exit); | |
1033 | ||
e88ba015 MB |
1034 | MODULE_DESCRIPTION("ASoC WM8580 driver"); |
1035 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
1036 | MODULE_LICENSE("GPL"); |