Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 1 | /* sound/soc/at32/playpaq_wm8510.c |
| 2 | * ASoC machine driver for PlayPaq using WM8510 codec |
| 3 | * |
| 4 | * Copyright (C) 2008 Long Range Systems |
| 5 | * Geoffrey Wossum <gwossum@acm.org> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This code is largely inspired by sound/soc/at91/eti_b1_wm8731.c |
| 12 | * |
| 13 | * NOTE: If you don't have the AT32 enhanced portmux configured (which |
| 14 | * isn't currently in the mainline or Atmel patched kernel), you will |
| 15 | * need to set the MCLK pin (PA30) to peripheral A in your board initialization |
| 16 | * code. Something like: |
| 17 | * at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0); |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | /* #define DEBUG */ |
| 22 | |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/moduleparam.h> |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 25 | #include <linux/kernel.h> |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/clk.h> |
| 28 | #include <linux/timer.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/platform_device.h> |
| 31 | |
| 32 | #include <sound/core.h> |
| 33 | #include <sound/pcm.h> |
| 34 | #include <sound/pcm_params.h> |
| 35 | #include <sound/soc.h> |
| 36 | #include <sound/soc-dapm.h> |
| 37 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 38 | #include <mach/at32ap700x.h> |
| 39 | #include <mach/portmux.h> |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 40 | |
| 41 | #include "../codecs/wm8510.h" |
Sedji Gaouaou | 6c74250 | 2008-10-03 16:57:50 +0200 | [diff] [blame] | 42 | #include "atmel-pcm.h" |
| 43 | #include "atmel_ssc_dai.h" |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 44 | |
| 45 | |
| 46 | /*-------------------------------------------------------------------------*\ |
| 47 | * constants |
| 48 | \*-------------------------------------------------------------------------*/ |
| 49 | #define MCLK_PIN GPIO_PIN_PA(30) |
| 50 | #define MCLK_PERIPH GPIO_PERIPH_A |
| 51 | |
| 52 | |
| 53 | /*-------------------------------------------------------------------------*\ |
| 54 | * data types |
| 55 | \*-------------------------------------------------------------------------*/ |
| 56 | /* SSC clocking data */ |
| 57 | struct ssc_clock_data { |
| 58 | /* CMR div */ |
| 59 | unsigned int cmr_div; |
| 60 | |
| 61 | /* Frame period (as needed by xCMR.PERIOD) */ |
| 62 | unsigned int period; |
| 63 | |
| 64 | /* The SSC clock rate these settings where calculated for */ |
| 65 | unsigned long ssc_rate; |
| 66 | }; |
| 67 | |
| 68 | |
| 69 | /*-------------------------------------------------------------------------*\ |
| 70 | * module data |
| 71 | \*-------------------------------------------------------------------------*/ |
| 72 | static struct clk *_gclk0; |
| 73 | static struct clk *_pll0; |
| 74 | |
| 75 | #define CODEC_CLK (_gclk0) |
| 76 | |
| 77 | |
| 78 | /*-------------------------------------------------------------------------*\ |
| 79 | * Sound SOC operations |
| 80 | \*-------------------------------------------------------------------------*/ |
| 81 | #if defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE |
| 82 | static struct ssc_clock_data playpaq_wm8510_calc_ssc_clock( |
| 83 | struct snd_pcm_hw_params *params, |
Liam Girdwood | 453ba20 | 2008-07-07 16:07:29 +0100 | [diff] [blame] | 84 | struct snd_soc_dai *cpu_dai) |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 85 | { |
| 86 | struct at32_ssc_info *ssc_p = cpu_dai->private_data; |
| 87 | struct ssc_device *ssc = ssc_p->ssc; |
| 88 | struct ssc_clock_data cd; |
| 89 | unsigned int rate, width_bits, channels; |
| 90 | unsigned int bitrate, ssc_div; |
| 91 | unsigned actual_rate; |
| 92 | |
| 93 | |
| 94 | /* |
| 95 | * Figure out required bitrate |
| 96 | */ |
| 97 | rate = params_rate(params); |
| 98 | channels = params_channels(params); |
| 99 | width_bits = snd_pcm_format_physical_width(params_format(params)); |
| 100 | bitrate = rate * width_bits * channels; |
| 101 | |
| 102 | |
| 103 | /* |
| 104 | * Figure out required SSC divider and period for required bitrate |
| 105 | */ |
| 106 | cd.ssc_rate = clk_get_rate(ssc->clk); |
| 107 | ssc_div = cd.ssc_rate / bitrate; |
| 108 | cd.cmr_div = ssc_div / 2; |
| 109 | if (ssc_div & 1) { |
| 110 | /* round cmr_div up */ |
| 111 | cd.cmr_div++; |
| 112 | } |
| 113 | cd.period = width_bits - 1; |
| 114 | |
| 115 | |
| 116 | /* |
| 117 | * Find actual rate, compare to requested rate |
| 118 | */ |
| 119 | actual_rate = (cd.ssc_rate / (cd.cmr_div * 2)) / (2 * (cd.period + 1)); |
| 120 | pr_debug("playpaq_wm8510: Request rate = %d, actual rate = %d\n", |
| 121 | rate, actual_rate); |
| 122 | |
| 123 | |
| 124 | return cd; |
| 125 | } |
| 126 | #endif /* CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE */ |
| 127 | |
| 128 | |
| 129 | |
| 130 | static int playpaq_wm8510_hw_params(struct snd_pcm_substream *substream, |
| 131 | struct snd_pcm_hw_params *params) |
| 132 | { |
| 133 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
Liam Girdwood | 453ba20 | 2008-07-07 16:07:29 +0100 | [diff] [blame] | 134 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; |
| 135 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 136 | struct at32_ssc_info *ssc_p = cpu_dai->private_data; |
| 137 | struct ssc_device *ssc = ssc_p->ssc; |
| 138 | unsigned int pll_out = 0, bclk = 0, mclk_div = 0; |
| 139 | int ret; |
| 140 | |
| 141 | |
| 142 | /* Due to difficulties with getting the correct clocks from the AT32's |
| 143 | * PLL0, we're going to let the CODEC be in charge of all the clocks |
| 144 | */ |
| 145 | #if !defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE |
| 146 | const unsigned int fmt = (SND_SOC_DAIFMT_I2S | |
| 147 | SND_SOC_DAIFMT_NB_NF | |
| 148 | SND_SOC_DAIFMT_CBM_CFM); |
| 149 | #else |
| 150 | struct ssc_clock_data cd; |
| 151 | const unsigned int fmt = (SND_SOC_DAIFMT_I2S | |
| 152 | SND_SOC_DAIFMT_NB_NF | |
| 153 | SND_SOC_DAIFMT_CBS_CFS); |
| 154 | #endif |
| 155 | |
| 156 | if (ssc == NULL) { |
| 157 | pr_warning("playpaq_wm8510_hw_params: ssc is NULL!\n"); |
| 158 | return -EINVAL; |
| 159 | } |
| 160 | |
| 161 | |
| 162 | /* |
| 163 | * Figure out PLL and BCLK dividers for WM8510 |
| 164 | */ |
| 165 | switch (params_rate(params)) { |
| 166 | case 48000: |
Jonas Andersson | 86027ae | 2009-03-04 08:24:26 +0100 | [diff] [blame^] | 167 | pll_out = 24576000; |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 168 | mclk_div = WM8510_MCLKDIV_2; |
| 169 | bclk = WM8510_BCLKDIV_8; |
| 170 | break; |
| 171 | |
Jonas Andersson | 86027ae | 2009-03-04 08:24:26 +0100 | [diff] [blame^] | 172 | case 44100: |
| 173 | pll_out = 22579200; |
| 174 | mclk_div = WM8510_MCLKDIV_2; |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 175 | bclk = WM8510_BCLKDIV_8; |
| 176 | break; |
| 177 | |
Jonas Andersson | 86027ae | 2009-03-04 08:24:26 +0100 | [diff] [blame^] | 178 | case 22050: |
| 179 | pll_out = 22579200; |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 180 | mclk_div = WM8510_MCLKDIV_4; |
| 181 | bclk = WM8510_BCLKDIV_8; |
| 182 | break; |
| 183 | |
Jonas Andersson | 86027ae | 2009-03-04 08:24:26 +0100 | [diff] [blame^] | 184 | case 16000: |
| 185 | pll_out = 24576000; |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 186 | mclk_div = WM8510_MCLKDIV_6; |
| 187 | bclk = WM8510_BCLKDIV_8; |
| 188 | break; |
| 189 | |
Jonas Andersson | 86027ae | 2009-03-04 08:24:26 +0100 | [diff] [blame^] | 190 | case 11025: |
| 191 | pll_out = 22579200; |
| 192 | mclk_div = WM8510_MCLKDIV_8; |
| 193 | bclk = WM8510_BCLKDIV_8; |
| 194 | break; |
| 195 | |
| 196 | case 8000: |
| 197 | pll_out = 24576000; |
| 198 | mclk_div = WM8510_MCLKDIV_12; |
| 199 | bclk = WM8510_BCLKDIV_8; |
| 200 | break; |
| 201 | |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 202 | default: |
| 203 | pr_warning("playpaq_wm8510: Unsupported sample rate %d\n", |
| 204 | params_rate(params)); |
| 205 | return -EINVAL; |
| 206 | } |
| 207 | |
| 208 | |
| 209 | /* |
| 210 | * set CPU and CODEC DAI configuration |
| 211 | */ |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 212 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 213 | if (ret < 0) { |
| 214 | pr_warning("playpaq_wm8510: " |
| 215 | "Failed to set CODEC DAI format (%d)\n", |
| 216 | ret); |
| 217 | return ret; |
| 218 | } |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 219 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 220 | if (ret < 0) { |
| 221 | pr_warning("playpaq_wm8510: " |
| 222 | "Failed to set CPU DAI format (%d)\n", |
| 223 | ret); |
| 224 | return ret; |
| 225 | } |
| 226 | |
| 227 | |
| 228 | /* |
| 229 | * Set CPU clock configuration |
| 230 | */ |
| 231 | #if defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE |
| 232 | cd = playpaq_wm8510_calc_ssc_clock(params, cpu_dai); |
| 233 | pr_debug("playpaq_wm8510: cmr_div = %d, period = %d\n", |
| 234 | cd.cmr_div, cd.period); |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 235 | ret = snd_soc_dai_set_clkdiv(cpu_dai, AT32_SSC_CMR_DIV, cd.cmr_div); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 236 | if (ret < 0) { |
| 237 | pr_warning("playpaq_wm8510: Failed to set CPU CMR_DIV (%d)\n", |
| 238 | ret); |
| 239 | return ret; |
| 240 | } |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 241 | ret = snd_soc_dai_set_clkdiv(cpu_dai, AT32_SSC_TCMR_PERIOD, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 242 | cd.period); |
| 243 | if (ret < 0) { |
| 244 | pr_warning("playpaq_wm8510: " |
| 245 | "Failed to set CPU transmit period (%d)\n", |
| 246 | ret); |
| 247 | return ret; |
| 248 | } |
| 249 | #endif /* CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE */ |
| 250 | |
| 251 | |
| 252 | /* |
| 253 | * Set CODEC clock configuration |
| 254 | */ |
| 255 | pr_debug("playpaq_wm8510: " |
| 256 | "pll_in = %ld, pll_out = %u, bclk = %x, mclk = %x\n", |
| 257 | clk_get_rate(CODEC_CLK), pll_out, bclk, mclk_div); |
| 258 | |
| 259 | |
| 260 | #if !defined CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 261 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8510_BCLKDIV, bclk); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 262 | if (ret < 0) { |
| 263 | pr_warning |
| 264 | ("playpaq_wm8510: Failed to set CODEC DAI BCLKDIV (%d)\n", |
| 265 | ret); |
| 266 | return ret; |
| 267 | } |
| 268 | #endif /* CONFIG_SND_AT32_SOC_PLAYPAQ_SLAVE */ |
| 269 | |
| 270 | |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 271 | ret = snd_soc_dai_set_pll(codec_dai, 0, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 272 | clk_get_rate(CODEC_CLK), pll_out); |
| 273 | if (ret < 0) { |
| 274 | pr_warning("playpaq_wm8510: Failed to set CODEC DAI PLL (%d)\n", |
| 275 | ret); |
| 276 | return ret; |
| 277 | } |
| 278 | |
| 279 | |
Liam Girdwood | 64105cf | 2008-07-08 13:19:18 +0100 | [diff] [blame] | 280 | ret = snd_soc_dai_set_clkdiv(codec_dai, WM8510_MCLKDIV, mclk_div); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 281 | if (ret < 0) { |
| 282 | pr_warning("playpaq_wm8510: Failed to set CODEC MCLKDIV (%d)\n", |
| 283 | ret); |
| 284 | return ret; |
| 285 | } |
| 286 | |
| 287 | |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | |
| 292 | |
| 293 | static struct snd_soc_ops playpaq_wm8510_ops = { |
| 294 | .hw_params = playpaq_wm8510_hw_params, |
| 295 | }; |
| 296 | |
| 297 | |
| 298 | |
| 299 | static const struct snd_soc_dapm_widget playpaq_dapm_widgets[] = { |
| 300 | SND_SOC_DAPM_MIC("Int Mic", NULL), |
| 301 | SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| 302 | }; |
| 303 | |
| 304 | |
| 305 | |
Mark Brown | cdbdd16 | 2008-10-16 11:00:06 +0100 | [diff] [blame] | 306 | static const struct snd_soc_dapm_route intercon[] = { |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 307 | /* speaker connected to SPKOUT */ |
| 308 | {"Ext Spk", NULL, "SPKOUTP"}, |
| 309 | {"Ext Spk", NULL, "SPKOUTN"}, |
| 310 | |
| 311 | {"Mic Bias", NULL, "Int Mic"}, |
| 312 | {"MICN", NULL, "Mic Bias"}, |
| 313 | {"MICP", NULL, "Mic Bias"}, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 314 | }; |
| 315 | |
| 316 | |
| 317 | |
| 318 | static int playpaq_wm8510_init(struct snd_soc_codec *codec) |
| 319 | { |
| 320 | int i; |
| 321 | |
| 322 | /* |
| 323 | * Add DAPM widgets |
| 324 | */ |
| 325 | for (i = 0; i < ARRAY_SIZE(playpaq_dapm_widgets); i++) |
| 326 | snd_soc_dapm_new_control(codec, &playpaq_dapm_widgets[i]); |
| 327 | |
| 328 | |
| 329 | |
| 330 | /* |
| 331 | * Setup audio path interconnects |
| 332 | */ |
Mark Brown | cdbdd16 | 2008-10-16 11:00:06 +0100 | [diff] [blame] | 333 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); |
| 334 | |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 335 | |
| 336 | |
Liam Girdwood | 6f48413 | 2008-07-08 13:21:52 +0100 | [diff] [blame] | 337 | /* always connected pins */ |
| 338 | snd_soc_dapm_enable_pin(codec, "Int Mic"); |
| 339 | snd_soc_dapm_enable_pin(codec, "Ext Spk"); |
| 340 | snd_soc_dapm_sync(codec); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 341 | |
| 342 | |
| 343 | |
| 344 | /* Make CSB show PLL rate */ |
Liam Girdwood | 6f48413 | 2008-07-08 13:21:52 +0100 | [diff] [blame] | 345 | snd_soc_dai_set_clkdiv(codec->dai, WM8510_OPCLKDIV, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 346 | WM8510_OPCLKDIV_1 | 4); |
| 347 | |
| 348 | return 0; |
| 349 | } |
| 350 | |
| 351 | |
| 352 | |
| 353 | static struct snd_soc_dai_link playpaq_wm8510_dai = { |
| 354 | .name = "WM8510", |
| 355 | .stream_name = "WM8510 PCM", |
| 356 | .cpu_dai = &at32_ssc_dai[0], |
| 357 | .codec_dai = &wm8510_dai, |
| 358 | .init = playpaq_wm8510_init, |
| 359 | .ops = &playpaq_wm8510_ops, |
| 360 | }; |
| 361 | |
| 362 | |
| 363 | |
Mark Brown | 8750654 | 2008-11-18 20:50:34 +0000 | [diff] [blame] | 364 | static struct snd_soc_card snd_soc_playpaq = { |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 365 | .name = "LRS_PlayPaq_WM8510", |
Mark Brown | 87689d5 | 2008-12-02 16:01:14 +0000 | [diff] [blame] | 366 | .platform = &at32_soc_platform, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 367 | .dai_link = &playpaq_wm8510_dai, |
| 368 | .num_links = 1, |
| 369 | }; |
| 370 | |
| 371 | |
| 372 | |
| 373 | static struct wm8510_setup_data playpaq_wm8510_setup = { |
Jean Delvare | 41759c2 | 2008-09-02 17:07:30 +0200 | [diff] [blame] | 374 | .i2c_bus = 0, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 375 | .i2c_address = 0x1a, |
| 376 | }; |
| 377 | |
| 378 | |
| 379 | |
| 380 | static struct snd_soc_device playpaq_wm8510_snd_devdata = { |
Mark Brown | 8750654 | 2008-11-18 20:50:34 +0000 | [diff] [blame] | 381 | .card = &snd_soc_playpaq, |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 382 | .codec_dev = &soc_codec_dev_wm8510, |
| 383 | .codec_data = &playpaq_wm8510_setup, |
| 384 | }; |
| 385 | |
| 386 | static struct platform_device *playpaq_snd_device; |
| 387 | |
| 388 | |
| 389 | static int __init playpaq_asoc_init(void) |
| 390 | { |
| 391 | int ret = 0; |
| 392 | struct at32_ssc_info *ssc_p = playpaq_wm8510_dai.cpu_dai->private_data; |
| 393 | struct ssc_device *ssc = NULL; |
| 394 | |
| 395 | |
| 396 | /* |
| 397 | * Request SSC device |
| 398 | */ |
| 399 | ssc = ssc_request(0); |
| 400 | if (IS_ERR(ssc)) { |
| 401 | ret = PTR_ERR(ssc); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 402 | goto err_ssc; |
| 403 | } |
| 404 | ssc_p->ssc = ssc; |
| 405 | |
| 406 | |
| 407 | /* |
| 408 | * Configure MCLK for WM8510 |
| 409 | */ |
| 410 | _gclk0 = clk_get(NULL, "gclk0"); |
| 411 | if (IS_ERR(_gclk0)) { |
| 412 | _gclk0 = NULL; |
| 413 | goto err_gclk0; |
| 414 | } |
| 415 | _pll0 = clk_get(NULL, "pll0"); |
| 416 | if (IS_ERR(_pll0)) { |
| 417 | _pll0 = NULL; |
| 418 | goto err_pll0; |
| 419 | } |
| 420 | if (clk_set_parent(_gclk0, _pll0)) { |
| 421 | pr_warning("snd-soc-playpaq: " |
| 422 | "Failed to set PLL0 as parent for DAC clock\n"); |
| 423 | goto err_set_clk; |
| 424 | } |
| 425 | clk_set_rate(CODEC_CLK, 12000000); |
| 426 | clk_enable(CODEC_CLK); |
| 427 | |
| 428 | #if defined CONFIG_AT32_ENHANCED_PORTMUX |
| 429 | at32_select_periph(MCLK_PIN, MCLK_PERIPH, 0); |
| 430 | #endif |
| 431 | |
| 432 | |
| 433 | /* |
| 434 | * Create and register platform device |
| 435 | */ |
| 436 | playpaq_snd_device = platform_device_alloc("soc-audio", 0); |
| 437 | if (playpaq_snd_device == NULL) { |
| 438 | ret = -ENOMEM; |
| 439 | goto err_device_alloc; |
| 440 | } |
| 441 | |
| 442 | platform_set_drvdata(playpaq_snd_device, &playpaq_wm8510_snd_devdata); |
| 443 | playpaq_wm8510_snd_devdata.dev = &playpaq_snd_device->dev; |
| 444 | |
| 445 | ret = platform_device_add(playpaq_snd_device); |
| 446 | if (ret) { |
| 447 | pr_warning("playpaq_wm8510: platform_device_add failed (%d)\n", |
| 448 | ret); |
| 449 | goto err_device_add; |
| 450 | } |
| 451 | |
| 452 | return 0; |
| 453 | |
| 454 | |
| 455 | err_device_add: |
| 456 | if (playpaq_snd_device != NULL) { |
| 457 | platform_device_put(playpaq_snd_device); |
| 458 | playpaq_snd_device = NULL; |
| 459 | } |
| 460 | err_device_alloc: |
| 461 | err_set_clk: |
| 462 | if (_pll0 != NULL) { |
| 463 | clk_put(_pll0); |
| 464 | _pll0 = NULL; |
| 465 | } |
| 466 | err_pll0: |
| 467 | if (_gclk0 != NULL) { |
| 468 | clk_put(_gclk0); |
| 469 | _gclk0 = NULL; |
| 470 | } |
| 471 | err_gclk0: |
Julien Brunel | 71dc525 | 2008-09-26 15:23:46 +0200 | [diff] [blame] | 472 | ssc_free(ssc); |
Geoffrey Wossum | 9aaca96 | 2008-06-05 13:49:34 +0100 | [diff] [blame] | 473 | err_ssc: |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | |
| 478 | static void __exit playpaq_asoc_exit(void) |
| 479 | { |
| 480 | struct at32_ssc_info *ssc_p = playpaq_wm8510_dai.cpu_dai->private_data; |
| 481 | struct ssc_device *ssc; |
| 482 | |
| 483 | if (ssc_p != NULL) { |
| 484 | ssc = ssc_p->ssc; |
| 485 | if (ssc != NULL) |
| 486 | ssc_free(ssc); |
| 487 | ssc_p->ssc = NULL; |
| 488 | } |
| 489 | |
| 490 | if (_gclk0 != NULL) { |
| 491 | clk_put(_gclk0); |
| 492 | _gclk0 = NULL; |
| 493 | } |
| 494 | if (_pll0 != NULL) { |
| 495 | clk_put(_pll0); |
| 496 | _pll0 = NULL; |
| 497 | } |
| 498 | |
| 499 | #if defined CONFIG_AT32_ENHANCED_PORTMUX |
| 500 | at32_free_pin(MCLK_PIN); |
| 501 | #endif |
| 502 | |
| 503 | platform_device_unregister(playpaq_snd_device); |
| 504 | playpaq_snd_device = NULL; |
| 505 | } |
| 506 | |
| 507 | module_init(playpaq_asoc_init); |
| 508 | module_exit(playpaq_asoc_exit); |
| 509 | |
| 510 | MODULE_AUTHOR("Geoffrey Wossum <gwossum@acm.org>"); |
| 511 | MODULE_DESCRIPTION("ASoC machine driver for LRS PlayPaq"); |
| 512 | MODULE_LICENSE("GPL"); |