ARM: rockchip: rk3228: implement function rk3228_restart
[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-omap2 / twl-common.c
1 /*
2  * twl-common.c
3  *
4  * Copyright (C) 2011 Texas Instruments, Inc..
5  * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * version 2 as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
19  * 02110-1301 USA
20  *
21  */
22
23 #include <linux/i2c.h>
24 #include <linux/i2c/twl.h>
25 #include <linux/gpio.h>
26 #include <linux/string.h>
27 #include <linux/regulator/machine.h>
28 #include <linux/regulator/fixed.h>
29
30 #include "soc.h"
31 #include "twl-common.h"
32 #include "pm.h"
33 #include "voltage.h"
34 #include "mux.h"
35
36 static struct i2c_board_info __initdata pmic_i2c_board_info = {
37         .addr           = 0x48,
38         .flags          = I2C_CLIENT_WAKE,
39 };
40
41 #if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
42 static int twl_set_voltage(void *data, int target_uV)
43 {
44         struct voltagedomain *voltdm = (struct voltagedomain *)data;
45         return voltdm_scale(voltdm, target_uV);
46 }
47
48 static int twl_get_voltage(void *data)
49 {
50         struct voltagedomain *voltdm = (struct voltagedomain *)data;
51         return voltdm_get_voltage(voltdm);
52 }
53 #endif
54
55 void __init omap_pmic_init(int bus, u32 clkrate,
56                            const char *pmic_type, int pmic_irq,
57                            struct twl4030_platform_data *pmic_data)
58 {
59         omap_mux_init_signal("sys_nirq", OMAP_PIN_INPUT_PULLUP | OMAP_PIN_OFF_WAKEUPENABLE);
60         strlcpy(pmic_i2c_board_info.type, pmic_type,
61                 sizeof(pmic_i2c_board_info.type));
62         pmic_i2c_board_info.irq = pmic_irq;
63         pmic_i2c_board_info.platform_data = pmic_data;
64
65         omap_register_i2c_bus(bus, clkrate, &pmic_i2c_board_info, 1);
66 }
67
68 void __init omap4_pmic_init(const char *pmic_type,
69                     struct twl4030_platform_data *pmic_data,
70                     struct i2c_board_info *devices, int nr_devices)
71 {
72         /* PMIC part*/
73         omap_mux_init_signal("sys_nirq1", OMAP_PIN_INPUT_PULLUP | OMAP_PIN_OFF_WAKEUPENABLE);
74         omap_mux_init_signal("fref_clk0_out.sys_drm_msecure", OMAP_PIN_OUTPUT);
75         omap_pmic_init(1, 400, pmic_type, 7 + OMAP44XX_IRQ_GIC_START, pmic_data);
76
77         /* Register additional devices on i2c1 bus if needed */
78         if (devices)
79                 i2c_register_board_info(1, devices, nr_devices);
80 }
81
82 void __init omap_pmic_late_init(void)
83 {
84         /* Init the OMAP TWL parameters (if PMIC has been registerd) */
85         if (!pmic_i2c_board_info.irq)
86                 return;
87
88         omap3_twl_init();
89         omap4_twl_init();
90 }
91
92 #if defined(CONFIG_ARCH_OMAP3)
93 static struct twl4030_usb_data omap3_usb_pdata = {
94         .usb_mode       = T2_USB_MODE_ULPI,
95 };
96
97 static int omap3_batt_table[] = {
98 /* 0 C */
99 30800, 29500, 28300, 27100,
100 26000, 24900, 23900, 22900, 22000, 21100, 20300, 19400, 18700, 17900,
101 17200, 16500, 15900, 15300, 14700, 14100, 13600, 13100, 12600, 12100,
102 11600, 11200, 10800, 10400, 10000, 9630,  9280,  8950,  8620,  8310,
103 8020,  7730,  7460,  7200,  6950,  6710,  6470,  6250,  6040,  5830,
104 5640,  5450,  5260,  5090,  4920,  4760,  4600,  4450,  4310,  4170,
105 4040,  3910,  3790,  3670,  3550
106 };
107
108 static struct twl4030_bci_platform_data omap3_bci_pdata = {
109         .battery_tmp_tbl        = omap3_batt_table,
110         .tblsize                = ARRAY_SIZE(omap3_batt_table),
111 };
112
113 static struct twl4030_madc_platform_data omap3_madc_pdata = {
114         .irq_line       = 1,
115 };
116
117 static struct twl4030_codec_data omap3_codec;
118
119 static struct twl4030_audio_data omap3_audio_pdata = {
120         .audio_mclk = 26000000,
121         .codec = &omap3_codec,
122 };
123
124 static struct regulator_consumer_supply omap3_vdda_dac_supplies[] = {
125         REGULATOR_SUPPLY("vdda_dac", "omapdss_venc"),
126 };
127
128 static struct regulator_init_data omap3_vdac_idata = {
129         .constraints = {
130                 .min_uV                 = 1800000,
131                 .max_uV                 = 1800000,
132                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
133                                         | REGULATOR_MODE_STANDBY,
134                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
135                                         | REGULATOR_CHANGE_STATUS,
136         },
137         .num_consumer_supplies  = ARRAY_SIZE(omap3_vdda_dac_supplies),
138         .consumer_supplies      = omap3_vdda_dac_supplies,
139 };
140
141 static struct regulator_consumer_supply omap3_vpll2_supplies[] = {
142         REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
143         REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi.0"),
144 };
145
146 static struct regulator_init_data omap3_vpll2_idata = {
147         .constraints = {
148                 .min_uV                 = 1800000,
149                 .max_uV                 = 1800000,
150                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
151                                         | REGULATOR_MODE_STANDBY,
152                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
153                                         | REGULATOR_CHANGE_STATUS,
154         },
155         .num_consumer_supplies          = ARRAY_SIZE(omap3_vpll2_supplies),
156         .consumer_supplies              = omap3_vpll2_supplies,
157 };
158
159 static struct regulator_consumer_supply omap3_vdd1_supply[] = {
160         REGULATOR_SUPPLY("vcc", "cpu0"),
161 };
162
163 static struct regulator_consumer_supply omap3_vdd2_supply[] = {
164         REGULATOR_SUPPLY("vcc", "l3_main.0"),
165 };
166
167 static struct regulator_init_data omap3_vdd1 = {
168         .constraints = {
169                 .name                   = "vdd_mpu_iva",
170                 .min_uV                 = 600000,
171                 .max_uV                 = 1450000,
172                 .valid_modes_mask       = REGULATOR_MODE_NORMAL,
173                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE,
174         },
175         .num_consumer_supplies          = ARRAY_SIZE(omap3_vdd1_supply),
176         .consumer_supplies              = omap3_vdd1_supply,
177 };
178
179 static struct regulator_init_data omap3_vdd2 = {
180         .constraints = {
181                 .name                   = "vdd_core",
182                 .min_uV                 = 600000,
183                 .max_uV                 = 1450000,
184                 .valid_modes_mask       = REGULATOR_MODE_NORMAL,
185                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE,
186         },
187         .num_consumer_supplies          = ARRAY_SIZE(omap3_vdd2_supply),
188         .consumer_supplies              = omap3_vdd2_supply,
189 };
190
191 static struct twl_regulator_driver_data omap3_vdd1_drvdata = {
192         .get_voltage = twl_get_voltage,
193         .set_voltage = twl_set_voltage,
194 };
195
196 static struct twl_regulator_driver_data omap3_vdd2_drvdata = {
197         .get_voltage = twl_get_voltage,
198         .set_voltage = twl_set_voltage,
199 };
200
201 void __init omap3_pmic_get_config(struct twl4030_platform_data *pmic_data,
202                                   u32 pdata_flags, u32 regulators_flags)
203 {
204         if (!pmic_data->vdd1) {
205                 omap3_vdd1.driver_data = &omap3_vdd1_drvdata;
206                 omap3_vdd1_drvdata.data = voltdm_lookup("mpu_iva");
207                 pmic_data->vdd1 = &omap3_vdd1;
208         }
209         if (!pmic_data->vdd2) {
210                 omap3_vdd2.driver_data = &omap3_vdd2_drvdata;
211                 omap3_vdd2_drvdata.data = voltdm_lookup("core");
212                 pmic_data->vdd2 = &omap3_vdd2;
213         }
214
215         /* Common platform data configurations */
216         if (pdata_flags & TWL_COMMON_PDATA_USB && !pmic_data->usb)
217                 pmic_data->usb = &omap3_usb_pdata;
218
219         if (pdata_flags & TWL_COMMON_PDATA_BCI && !pmic_data->bci)
220                 pmic_data->bci = &omap3_bci_pdata;
221
222         if (pdata_flags & TWL_COMMON_PDATA_MADC && !pmic_data->madc)
223                 pmic_data->madc = &omap3_madc_pdata;
224
225         if (pdata_flags & TWL_COMMON_PDATA_AUDIO && !pmic_data->audio)
226                 pmic_data->audio = &omap3_audio_pdata;
227
228         /* Common regulator configurations */
229         if (regulators_flags & TWL_COMMON_REGULATOR_VDAC && !pmic_data->vdac)
230                 pmic_data->vdac = &omap3_vdac_idata;
231
232         if (regulators_flags & TWL_COMMON_REGULATOR_VPLL2 && !pmic_data->vpll2)
233                 pmic_data->vpll2 = &omap3_vpll2_idata;
234 }
235 #endif /* CONFIG_ARCH_OMAP3 */
236
237 #if defined(CONFIG_ARCH_OMAP4)
238 static struct twl4030_usb_data omap4_usb_pdata = {
239 };
240
241 static struct regulator_consumer_supply omap4_vdda_hdmi_dac_supplies[] = {
242         REGULATOR_SUPPLY("vdda_hdmi_dac", "omapdss_hdmi"),
243 };
244
245 static struct regulator_init_data omap4_vdac_idata = {
246         .constraints = {
247                 .min_uV                 = 1800000,
248                 .max_uV                 = 1800000,
249                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
250                                         | REGULATOR_MODE_STANDBY,
251                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
252                                         | REGULATOR_CHANGE_STATUS,
253         },
254         .num_consumer_supplies  = ARRAY_SIZE(omap4_vdda_hdmi_dac_supplies),
255         .consumer_supplies      = omap4_vdda_hdmi_dac_supplies,
256         .supply_regulator       = "V2V1",
257 };
258
259 static struct regulator_init_data omap4_vaux2_idata = {
260         .constraints = {
261                 .min_uV                 = 1200000,
262                 .max_uV                 = 2800000,
263                 .apply_uV               = true,
264                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
265                                         | REGULATOR_MODE_STANDBY,
266                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
267                                         | REGULATOR_CHANGE_MODE
268                                         | REGULATOR_CHANGE_STATUS,
269         },
270 };
271
272 static struct regulator_init_data omap4_vaux3_idata = {
273         .constraints = {
274                 .min_uV                 = 1000000,
275                 .max_uV                 = 3000000,
276                 .apply_uV               = true,
277                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
278                                         | REGULATOR_MODE_STANDBY,
279                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
280                                         | REGULATOR_CHANGE_MODE
281                                         | REGULATOR_CHANGE_STATUS,
282         },
283 };
284
285 static struct regulator_consumer_supply omap4_vmmc_supply[] = {
286         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
287 };
288
289 /* VMMC1 for MMC1 card */
290 static struct regulator_init_data omap4_vmmc_idata = {
291         .constraints = {
292                 .min_uV                 = 1200000,
293                 .max_uV                 = 3000000,
294                 .apply_uV               = true,
295                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
296                                         | REGULATOR_MODE_STANDBY,
297                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
298                                         | REGULATOR_CHANGE_MODE
299                                         | REGULATOR_CHANGE_STATUS,
300         },
301         .num_consumer_supplies  = ARRAY_SIZE(omap4_vmmc_supply),
302         .consumer_supplies      = omap4_vmmc_supply,
303 };
304
305 static struct regulator_init_data omap4_vpp_idata = {
306         .constraints = {
307                 .min_uV                 = 1800000,
308                 .max_uV                 = 2500000,
309                 .apply_uV               = true,
310                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
311                                         | REGULATOR_MODE_STANDBY,
312                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
313                                         | REGULATOR_CHANGE_MODE
314                                         | REGULATOR_CHANGE_STATUS,
315         },
316 };
317
318 static struct regulator_init_data omap4_vana_idata = {
319         .constraints = {
320                 .min_uV                 = 2100000,
321                 .max_uV                 = 2100000,
322                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
323                                         | REGULATOR_MODE_STANDBY,
324                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
325                                         | REGULATOR_CHANGE_STATUS,
326         },
327 };
328
329 static struct regulator_consumer_supply omap4_vcxio_supply[] = {
330         REGULATOR_SUPPLY("vdds_dsi", "omapdss_dss"),
331         REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi.0"),
332         REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi.1"),
333 };
334
335 static struct regulator_init_data omap4_vcxio_idata = {
336         .constraints = {
337                 .min_uV                 = 1800000,
338                 .max_uV                 = 1800000,
339                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
340                                         | REGULATOR_MODE_STANDBY,
341                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
342                                         | REGULATOR_CHANGE_STATUS,
343                 .always_on              = true,
344         },
345         .num_consumer_supplies  = ARRAY_SIZE(omap4_vcxio_supply),
346         .consumer_supplies      = omap4_vcxio_supply,
347         .supply_regulator       = "V2V1",
348 };
349
350 static struct regulator_init_data omap4_vusb_idata = {
351         .constraints = {
352                 .min_uV                 = 3300000,
353                 .max_uV                 = 3300000,
354                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
355                                         | REGULATOR_MODE_STANDBY,
356                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
357                                         | REGULATOR_CHANGE_STATUS,
358         },
359 };
360
361 static struct regulator_init_data omap4_clk32kg_idata = {
362         .constraints = {
363                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
364         },
365 };
366
367 static struct regulator_consumer_supply omap4_vdd1_supply[] = {
368         REGULATOR_SUPPLY("vcc", "cpu0"),
369 };
370
371 static struct regulator_consumer_supply omap4_vdd2_supply[] = {
372         REGULATOR_SUPPLY("vcc", "iva.0"),
373 };
374
375 static struct regulator_consumer_supply omap4_vdd3_supply[] = {
376         REGULATOR_SUPPLY("vcc", "l3_main.0"),
377 };
378
379 static struct regulator_init_data omap4_vdd1 = {
380         .constraints = {
381                 .name                   = "vdd_mpu",
382                 .min_uV                 = 500000,
383                 .max_uV                 = 1500000,
384                 .valid_modes_mask       = REGULATOR_MODE_NORMAL,
385                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE,
386         },
387         .num_consumer_supplies          = ARRAY_SIZE(omap4_vdd1_supply),
388         .consumer_supplies              = omap4_vdd1_supply,
389 };
390
391 static struct regulator_init_data omap4_vdd2 = {
392         .constraints = {
393                 .name                   = "vdd_iva",
394                 .min_uV                 = 500000,
395                 .max_uV                 = 1500000,
396                 .valid_modes_mask       = REGULATOR_MODE_NORMAL,
397                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE,
398         },
399         .num_consumer_supplies          = ARRAY_SIZE(omap4_vdd2_supply),
400         .consumer_supplies              = omap4_vdd2_supply,
401 };
402
403 static struct regulator_init_data omap4_vdd3 = {
404         .constraints = {
405                 .name                   = "vdd_core",
406                 .min_uV                 = 500000,
407                 .max_uV                 = 1500000,
408                 .valid_modes_mask       = REGULATOR_MODE_NORMAL,
409                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE,
410         },
411         .num_consumer_supplies          = ARRAY_SIZE(omap4_vdd3_supply),
412         .consumer_supplies              = omap4_vdd3_supply,
413 };
414
415
416 static struct twl_regulator_driver_data omap4_vdd1_drvdata = {
417         .get_voltage = twl_get_voltage,
418         .set_voltage = twl_set_voltage,
419 };
420
421 static struct twl_regulator_driver_data omap4_vdd2_drvdata = {
422         .get_voltage = twl_get_voltage,
423         .set_voltage = twl_set_voltage,
424 };
425
426 static struct twl_regulator_driver_data omap4_vdd3_drvdata = {
427         .get_voltage = twl_get_voltage,
428         .set_voltage = twl_set_voltage,
429 };
430
431 static struct regulator_consumer_supply omap4_v1v8_supply[] = {
432         REGULATOR_SUPPLY("vio", "1-004b"),
433 };
434
435 static struct regulator_init_data omap4_v1v8_idata = {
436         .constraints = {
437                 .min_uV                 = 1800000,
438                 .max_uV                 = 1800000,
439                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
440                                         | REGULATOR_MODE_STANDBY,
441                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
442                                         | REGULATOR_CHANGE_STATUS,
443                 .always_on              = true,
444         },
445         .num_consumer_supplies  = ARRAY_SIZE(omap4_v1v8_supply),
446         .consumer_supplies      = omap4_v1v8_supply,
447 };
448
449 static struct regulator_consumer_supply omap4_v2v1_supply[] = {
450         REGULATOR_SUPPLY("v2v1", "1-004b"),
451 };
452
453 static struct regulator_init_data omap4_v2v1_idata = {
454         .constraints = {
455                 .min_uV                 = 2100000,
456                 .max_uV                 = 2100000,
457                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
458                                         | REGULATOR_MODE_STANDBY,
459                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
460                                         | REGULATOR_CHANGE_STATUS,
461         },
462         .num_consumer_supplies  = ARRAY_SIZE(omap4_v2v1_supply),
463         .consumer_supplies      = omap4_v2v1_supply,
464 };
465
466 void __init omap4_pmic_get_config(struct twl4030_platform_data *pmic_data,
467                                   u32 pdata_flags, u32 regulators_flags)
468 {
469         if (!pmic_data->vdd1) {
470                 omap4_vdd1.driver_data = &omap4_vdd1_drvdata;
471                 omap4_vdd1_drvdata.data = voltdm_lookup("mpu");
472                 pmic_data->vdd1 = &omap4_vdd1;
473         }
474
475         if (!pmic_data->vdd2) {
476                 omap4_vdd2.driver_data = &omap4_vdd2_drvdata;
477                 omap4_vdd2_drvdata.data = voltdm_lookup("iva");
478                 pmic_data->vdd2 = &omap4_vdd2;
479         }
480
481         if (!pmic_data->vdd3) {
482                 omap4_vdd3.driver_data = &omap4_vdd3_drvdata;
483                 omap4_vdd3_drvdata.data = voltdm_lookup("core");
484                 pmic_data->vdd3 = &omap4_vdd3;
485         }
486
487         /* Common platform data configurations */
488         if (pdata_flags & TWL_COMMON_PDATA_USB && !pmic_data->usb)
489                 pmic_data->usb = &omap4_usb_pdata;
490
491         /* Common regulator configurations */
492         if (regulators_flags & TWL_COMMON_REGULATOR_VDAC && !pmic_data->vdac)
493                 pmic_data->vdac = &omap4_vdac_idata;
494
495         if (regulators_flags & TWL_COMMON_REGULATOR_VAUX2 && !pmic_data->vaux2)
496                 pmic_data->vaux2 = &omap4_vaux2_idata;
497
498         if (regulators_flags & TWL_COMMON_REGULATOR_VAUX3 && !pmic_data->vaux3)
499                 pmic_data->vaux3 = &omap4_vaux3_idata;
500
501         if (regulators_flags & TWL_COMMON_REGULATOR_VMMC && !pmic_data->vmmc)
502                 pmic_data->vmmc = &omap4_vmmc_idata;
503
504         if (regulators_flags & TWL_COMMON_REGULATOR_VPP && !pmic_data->vpp)
505                 pmic_data->vpp = &omap4_vpp_idata;
506
507         if (regulators_flags & TWL_COMMON_REGULATOR_VANA && !pmic_data->vana)
508                 pmic_data->vana = &omap4_vana_idata;
509
510         if (regulators_flags & TWL_COMMON_REGULATOR_VCXIO && !pmic_data->vcxio)
511                 pmic_data->vcxio = &omap4_vcxio_idata;
512
513         if (regulators_flags & TWL_COMMON_REGULATOR_VUSB && !pmic_data->vusb)
514                 pmic_data->vusb = &omap4_vusb_idata;
515
516         if (regulators_flags & TWL_COMMON_REGULATOR_CLK32KG &&
517             !pmic_data->clk32kg)
518                 pmic_data->clk32kg = &omap4_clk32kg_idata;
519
520         if (regulators_flags & TWL_COMMON_REGULATOR_V1V8 && !pmic_data->v1v8)
521                 pmic_data->v1v8 = &omap4_v1v8_idata;
522
523         if (regulators_flags & TWL_COMMON_REGULATOR_V2V1 && !pmic_data->v2v1)
524                 pmic_data->v2v1 = &omap4_v2v1_idata;
525 }
526 #endif /* CONFIG_ARCH_OMAP4 */
527
528 #if defined(CONFIG_SND_OMAP_SOC_OMAP_TWL4030) || \
529         defined(CONFIG_SND_OMAP_SOC_OMAP_TWL4030_MODULE)
530 #include <linux/platform_data/omap-twl4030.h>
531
532 /* Commonly used configuration */
533 static struct omap_tw4030_pdata omap_twl4030_audio_data;
534
535 static struct platform_device audio_device = {
536         .name           = "omap-twl4030",
537         .id             = -1,
538 };
539
540 void omap_twl4030_audio_init(char *card_name,
541                                     struct omap_tw4030_pdata *pdata)
542 {
543         if (!pdata)
544                 pdata = &omap_twl4030_audio_data;
545
546         pdata->card_name = card_name;
547
548         audio_device.dev.platform_data = pdata;
549         platform_device_register(&audio_device);
550 }
551
552 #else /* SOC_OMAP_TWL4030 */
553 void omap_twl4030_audio_init(char *card_name,
554                                     struct omap_tw4030_pdata *pdata)
555 {
556         return;
557 }
558 #endif /* SOC_OMAP_TWL4030 */