target/linux/pxa/patches-2.6.21/028-gumstix-asoc.patch

   1 Index: linux-2.6.21gum/sound/soc/pxa/Kconfig
   2 ===================================================================
   3 --- linux-2.6.21gum.orig/sound/soc/pxa/Kconfig
   4 +++ linux-2.6.21gum/sound/soc/pxa/Kconfig
   5 @@ -16,6 +16,7 @@ config SND_PXA2XX_SOC_AC97
   6         tristate
   7         select AC97_BUS
   8         select SND_SOC_AC97_BUS
   9 +       select SND_PXA2XX_AC97
  10
  11  config SND_PXA2XX_SOC_I2S
  12         tristate
  13 @@ -56,4 +57,12 @@ config SND_PXA2XX_SOC_TOSA
  14           Say Y if you want to add support for SoC audio on Sharp
  15           Zaurus SL-C6000x models (Tosa).
  16
  17 +config SND_PXA2XX_SOC_GUMSTIX
  18 +       tristate "SoC AC97 Audio support for Gumstix"
  19 +       depends on SND_PXA2XX_SOC && ARCH_GUMSTIX
  20 +       select SND_PXA2XX_SOC_AC97
  21 +       select SND_SOC_AC97_CODEC
  22 +       help
  23 +         Say Y if you want to add support for SoC audio on Gumstix
  24 +
  25  endmenu
  26 Index: linux-2.6.21gum/sound/soc/pxa/Makefile
  27 ===================================================================
  28 --- linux-2.6.21gum.orig/sound/soc/pxa/Makefile
  29 +++ linux-2.6.21gum/sound/soc/pxa/Makefile
  30 @@ -12,9 +12,11 @@ snd-soc-corgi-objs := corgi.o
  31  snd-soc-poodle-objs := poodle.o
  32  snd-soc-tosa-objs := tosa.o
  33  snd-soc-spitz-objs := spitz.o
  34 +snd-soc-gumstix-objs := gumstix.o
  35
  36  obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o
  37  obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
  38  obj-$(CONFIG_SND_PXA2XX_SOC_TOSA) += snd-soc-tosa.o
  39  obj-$(CONFIG_SND_PXA2XX_SOC_SPITZ) += snd-soc-spitz.o
  40 +obj-$(CONFIG_SND_PXA2XX_SOC_GUMSTIX) += snd-soc-gumstix.o
  41
  42 Index: linux-2.6.21gum/sound/soc/pxa/gumstix.c
  43 ===================================================================
  44 --- /dev/null
  45 +++ linux-2.6.21gum/sound/soc/pxa/gumstix.c
  46 @@ -0,0 +1,109 @@
  47 +/*
  48 + * gumstix.c  --  SoC audio for Gumstix
  49 + *
  50 + * Copyright 2005 Wolfson Microelectronics PLC.
  51 + * Copyright 2005 Openedhand Ltd.
  52 + * Copyright 2007 Gumstix Inc.
  53 + *
  54 + * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
  55 + *          Richard Purdie <richard@openedhand.com>
  56 + *          Craig Hughes <craig@gumstix.com>
  57 + *
  58 + *  This program is free software; you can redistribute  it and/or modify it
  59 + *  under  the terms of  the GNU General  Public License as published by the
  60 + *  Free Software Foundation;  either version 2 of the  License, or (at your
  61 + *  option) any later version.
  62 + *
  63 + *  Revision history
  64 + *    26 April 2007 - Initial revision forked from tosa.c
  65 + *
  66 + *
  67 + */
  68 +
  69 +#include <linux/module.h>
  70 +#include <linux/moduleparam.h>
  71 +#include <linux/device.h>
  72 +
  73 +#include <sound/driver.h>
  74 +#include <sound/core.h>
  75 +#include <sound/pcm.h>
  76 +#include <sound/soc.h>
  77 +#include <sound/soc-dapm.h>
  78 +
  79 +#include <asm/mach-types.h>
  80 +#include <asm/arch/pxa-regs.h>
  81 +#include <asm/arch/hardware.h>
  82 +#include <asm/arch/audio.h>
  83 +#include <asm/arch/gumstix.h>
  84 +
  85 +#include "pxa2xx-pcm.h"
  86 +#include "pxa2xx-ac97.h"
  87 +#include "../codecs/ac97.h"
  88 +
  89 +static struct snd_soc_machine gumstix;
  90 +
  91 +static int gumstix_ac97_init(struct snd_soc_codec *codec)
  92 +{
  93 +       // For now, do nothing -- should move the ucb1400 patch stuff here
  94 +       return 0;
  95 +}
  96 +
  97 +/* For right now, just add UCB1400 -- once that's working, we can also add
  98 + * PCM channels via SPI to bluetooth module, GSM module, or whatnot */
  99 +static struct snd_soc_dai_link gumstix_dai[] = {
 100 +{
 101 +       .name = "ucb1400",
 102 +       .stream_name = "UCB1400",
 103 +       .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 104 +       .codec_dai = &ac97_dai,
 105 +       .init = gumstix_ac97_init,
 106 +},
 107 +};
 108 +
 109 +static struct snd_soc_machine snd_soc_machine_gumstix = {
 110 +       .name = "Gumstix",
 111 +       .dai_link = gumstix_dai,
 112 +       .num_links = ARRAY_SIZE(gumstix_dai),
 113 +};
 114 +
 115 +static struct snd_soc_device gumstix_snd_devdata = {
 116 +       .machine = &snd_soc_machine_gumstix,
 117 +       .platform = &pxa2xx_soc_platform,
 118 +       .codec_dev = &soc_codec_dev_ac97,
 119 +};
 120 +
 121 +static struct platform_device *gumstix_snd_device;
 122 +
 123 +static int __init gumstix_init(void)
 124 +{
 125 +       int ret;
 126 +
 127 +       if (!machine_is_gumstix())
 128 +               return -ENODEV;
 129 +
 130 +       gumstix_snd_device = platform_device_alloc("soc-audio", -1);
 131 +       if (!gumstix_snd_device)
 132 +               return -ENOMEM;
 133 +
 134 +       platform_set_drvdata(gumstix_snd_device, &gumstix_snd_devdata);
 135 +       gumstix_snd_devdata.dev = &gumstix_snd_device->dev;
 136 +       ret = platform_device_add(gumstix_snd_device);
 137 +
 138 +       if (ret)
 139 +               platform_device_put(gumstix_snd_device);
 140 +
 141 +       return ret;
 142 +}
 143 +
 144 +static void __exit gumstix_exit(void)
 145 +{
 146 +       platform_device_unregister(gumstix_snd_device);
 147 +}
 148 +
 149 +module_init(gumstix_init);
 150 +module_exit(gumstix_exit);
 151 +
 152 +/* Module information */
 153 +MODULE_AUTHOR("Craig Hughes <craig@gumstix.com>");
 154 +MODULE_DESCRIPTION("ALSA SoC Gumstix");
 155 +MODULE_LICENSE("GPL");
 156 Index: linux-2.6.21gum/sound/soc/codecs/ac97.c
 157 ===================================================================
 158 --- linux-2.6.21gum.orig/sound/soc/codecs/ac97.c
 159 +++ linux-2.6.21gum/sound/soc/codecs/ac97.c
 160 @@ -43,7 +43,7 @@ static int ac97_prepare(struct snd_pcm_s
 161  #define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 162                 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 163
 164 -static struct snd_soc_codec_dai ac97_dai = {
 165 +struct snd_soc_codec_dai ac97_dai = {
 166         .name = "AC97 HiFi",
 167         .playback = {
 168                 .stream_name = "AC97 Playback",
 169 @@ -61,6 +61,8 @@ static struct snd_soc_codec_dai ac97_dai
 170                 .prepare = ac97_prepare,},
 171  };
 172
 173 +EXPORT_SYMBOL_GPL(ac97_dai);
 174 +
 175  static unsigned int ac97_read(struct snd_soc_codec *codec,
 176         unsigned int reg)
 177  {
 178 Index: linux-2.6.21gum/sound/soc/codecs/ac97.h
 179 ===================================================================
 180 --- linux-2.6.21gum.orig/sound/soc/codecs/ac97.h
 181 +++ linux-2.6.21gum/sound/soc/codecs/ac97.h
 182 @@ -14,5 +14,6 @@
 183  #define __LINUX_SND_SOC_AC97_H
 184
 185  extern struct snd_soc_codec_device soc_codec_dev_ac97;
 186 +extern struct snd_soc_codec_dai ac97_dai;
 187
 188  #endif
 189 Index: linux-2.6.21gum/sound/soc/pxa/pxa2xx-ac97.c
 190 ===================================================================
 191 --- linux-2.6.21gum.orig/sound/soc/pxa/pxa2xx-ac97.c
 192 +++ linux-2.6.21gum/sound/soc/pxa/pxa2xx-ac97.c
 193 @@ -154,18 +154,26 @@ static void pxa2xx_ac97_warm_reset(struc
 194
 195  static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
 196  {
 197 -       GCR &=  GCR_COLD_RST;  /* clear everything but nCRST */
 198 -       GCR &= ~GCR_COLD_RST;  /* then assert nCRST */
 199 -
 200 -       gsr_bits = 0;
 201  #ifdef CONFIG_PXA27x
 202         /* PXA27x Developers Manual section 13.5.2.2.1 */
 203 +       GCR |= GCR_ACLINK_OFF;
 204 +       udelay(5);
 205 +       GCR &= GCR_COLD_RST;    /* Mask all interrupts */
 206 +       GCR &= ~GCR_COLD_RST;   /* cold reset */
 207 +       udelay(5);
 208         pxa_set_cken(1 << 31, 1);
 209         udelay(5);
 210 -       pxa_set_cken(1 << 31, 0);
 211 +       GCR |= GCR_PRIRDY_IEN|GCR_SECRDY_IEN; /* unmask the interrupts */
 212 +       pxa_set_cken(1 << 31, 0); /* clear CKEN31 */
 213 +       udelay(5);
 214         GCR = GCR_COLD_RST;
 215         udelay(50);
 216 +       wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);
 217  #else
 218 +       GCR &=  GCR_COLD_RST;  /* clear everything but nCRST */
 219 +       GCR &= ~GCR_COLD_RST;  /* then assert nCRST */
 220 +
 221 +       gsr_bits = 0;
 222         GCR = GCR_COLD_RST;
 223         GCR |= GCR_CDONE_IE|GCR_SDONE_IE;
 224         wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1);