target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch

   1 Index: linux-2.6.21gum/sound/pci/ac97/ac97_codec.c
   2 ===================================================================
   3 --- linux-2.6.21gum.orig/sound/pci/ac97/ac97_codec.c
   4 +++ linux-2.6.21gum/sound/pci/ac97/ac97_codec.c
   5 @@ -158,7 +158,7 @@ static const struct ac97_codec_id snd_ac
   6  { 0x4e534300, 0xffffffff, "LM4540,43,45,46,48",        NULL,           NULL }, // only guess --jk
   7  { 0x4e534331, 0xffffffff, "LM4549",            NULL,           NULL },
   8  { 0x4e534350, 0xffffffff, "LM4550",            patch_lm4550,   NULL }, // volume wrap fix
   9 -{ 0x50534304, 0xffffffff, "UCB1400",           patch_ucb1400,  NULL },
  10 +{ 0x50534304, 0xffffffff, "UCB1400",           patch_ucb1400,  NULL, AC97_HAS_NO_STD_PCM },
  11  { 0x53494c20, 0xffffffe0, "Si3036,8",          mpatch_si3036,  mpatch_si3036, AC97_MODEM_PATCH },
  12  { 0x54524102, 0xffffffff, "TR28022",           NULL,           NULL },
  13  { 0x54524106, 0xffffffff, "TR28026",           NULL,           NULL },
  14 Index: linux-2.6.21gum/sound/pci/ac97/ac97_patch.c
  15 ===================================================================
  16 --- linux-2.6.21gum.orig/sound/pci/ac97/ac97_patch.c
  17 +++ linux-2.6.21gum/sound/pci/ac97/ac97_patch.c
  18 @@ -29,6 +29,10 @@
  19  #include <linux/slab.h>
  20  #include <linux/mutex.h>
  21
  22 +#include <linux/proc_fs.h>
  23 +#include <linux/string.h>
  24 +#include <linux/ctype.h>
  25 +
  26  #include <sound/core.h>
  27  #include <sound/pcm.h>
  28  #include <sound/control.h>
  29 @@ -406,6 +410,227 @@ int patch_yamaha_ymf753(struct snd_ac97
  30  }
  31
  32  /*
  33 + * UCB1400 codec
  34 + */
  35 +
  36 +#define AC97_UCB1400_FCSR1     0x6a
  37 +#define AC97_UCB1400_FCSR2     0x6c
  38 +
  39 +static const struct snd_kcontrol_new ucb1400_snd_ac97_controls[] = {
  40 +       AC97_SINGLE("Tone Control - Bass", AC97_UCB1400_FCSR1, 11, 4, 0),
  41 +       AC97_SINGLE("Tone Control - Treble", AC97_UCB1400_FCSR1, 9, 2, 0),
  42 +       AC97_SINGLE("Headphone Playback Switch", AC97_UCB1400_FCSR1, 6, 1, 0),
  43 +       AC97_SINGLE("De-emphasis", AC97_UCB1400_FCSR1, 5, 1, 0),
  44 +       AC97_SINGLE("DC Filter", AC97_UCB1400_FCSR1, 4, 1, 0),
  45 +       AC97_SINGLE("Hi-pass Filter", AC97_UCB1400_FCSR1, 3, 1, 0),
  46 +       AC97_SINGLE("ADC Filter", AC97_UCB1400_FCSR2, 12, 1, 0),
  47 +};
  48 +
  49 +#define NUM_GPIO_LINES 10
  50 +
  51 +static struct proc_dir_entry *proc_gpio_parent;
  52 +static struct proc_dir_entry *proc_gpios[NUM_GPIO_LINES];
  53 +
  54 +typedef struct
  55 +{
  56 +       int                     gpio;
  57 +       char                    name[32];
  58 +       struct snd_ac97         *ac97;
  59 +} gpio_summary_type;
  60 +
  61 +static gpio_summary_type gpio_summaries[NUM_GPIO_LINES] =
  62 +{
  63 +       { 0,    "UCB1400-0-0" },
  64 +       { 1,    "UCB1400-0-1" },
  65 +       { 2,    "UCB1400-0-2" },
  66 +       { 3,    "UCB1400-0-3" },
  67 +       { 4,    "UCB1400-0-4" },
  68 +       { 5,    "UCB1400-0-5" },
  69 +       { 6,    "UCB1400-0-6" },
  70 +       { 7,    "UCB1400-0-7" },
  71 +       { 8,    "UCB1400-0-8" },
  72 +       { 9,    "UCB1400-0-9" }
  73 +};
  74 +
  75 +
  76 +static int proc_ucb1400_ac97_gpio_write(struct file *file, const char __user *buf,
  77 +                        unsigned long count, void *data)
  78 +{
  79 +    char *cur, lbuf[count + 1];
  80 +    gpio_summary_type *summary = data;
  81 +    u32 direction_is_out, operation_is_set;
  82 +    int i = summary->gpio;
  83 +    u16 dir, value;
  84 +
  85 +    if (!capable(CAP_SYS_ADMIN))
  86 +            return -EACCES;
  87 +
  88 +    memset(lbuf, 0, count + 1);
  89 +
  90 +    if (copy_from_user(lbuf, buf, count))
  91 +            return -EFAULT;
  92 +
  93 +    cur = lbuf;
  94 +
  95 +    // Get current values
  96 +    direction_is_out = !!(snd_ac97_read(summary->ac97, 0x5c) & (0x0001 << i));
  97 +    operation_is_set = !!(snd_ac97_read(summary->ac97, 0x5a) & (0x0001 << i));
  98 +    while(1)
  99 +    {
 100 +            // We accept options: {GPIO|AF1|AF2|AF3}, {set|clear}, {in|out}
 101 +            // Anything else is an error
 102 +            while(cur[0] && (isspace(cur[0]) || ispunct(cur[0]))) cur = &(cur[1]);
 103 +
 104 +            if('\0' == cur[0]) break;
 105 +
 106 +            // Ok, so now we're pointing at the start of something
 107 +            switch(cur[0])
 108 +            {
 109 +                    case 'G':
 110 +                            // Check that next is "PIO" -- '\0' will cause safe short-circuit if end of buf
 111 +                            if(!(cur[1] == 'P' && cur[2] == 'I' && cur[3] == 'O')) goto parse_error;
 112 +                            cur = &(cur[4]);
 113 +                            break;
 114 +                    case 's':
 115 +                            if(!(cur[1] == 'e' && cur[2] == 't')) goto parse_error;
 116 +                            operation_is_set = 1;
 117 +                            cur = &(cur[3]);
 118 +                            break;
 119 +                    case 'c':
 120 +                            if(!(cur[1] == 'l' && cur[2] == 'e' && cur[3] == 'a' && cur[4] == 'r')) goto
 121 +parse_error;
 122 +                            operation_is_set = 0;
 123 +                            cur = &(cur[5]);
 124 +                            break;
 125 +                    case 'i':
 126 +                            if(!(cur[1] == 'n')) goto parse_error;
 127 +                            direction_is_out = 0;
 128 +                            cur = &(cur[2]);
 129 +                            break;
 130 +                    case 'o':
 131 +                            if(!(cur[1] == 'u' && cur[2] == 't')) goto parse_error;
 132 +                            direction_is_out = 1;
 133 +                            cur = &(cur[3]);
 134 +                            break;
 135 +                    default: goto parse_error;
 136 +            }
 137 +    }
 138 +
 139 +    // set/get value
 140 +    dir = snd_ac97_read(summary->ac97, 0x5c);
 141 +    value = snd_ac97_read(summary->ac97, 0x5a);
 142 +    if (direction_is_out)
 143 +    {
 144 +            dir |= 0x0001 << i;
 145 +            if (operation_is_set)
 146 +            {
 147 +                    value |= 0x0001 << i;
 148 +            }
 149 +            else
 150 +            {
 151 +                    value &= ~(0x0001 << i);
 152 +            }
 153 +
 154 +            snd_ac97_write(summary->ac97, 0x5c, dir);
 155 +            snd_ac97_write(summary->ac97, 0x5a, value);
 156 +    }
 157 +    else // direction in
 158 +    {
 159 +            dir &= ~(0x0001 << i);
 160 +            snd_ac97_write(summary->ac97, 0x5c, dir);
 161 +            operation_is_set = snd_ac97_read(summary->ac97, 0x5a) & ~(0x0001 << i);
 162 +    }
 163 +
 164 +#ifdef CONFIG_PROC_GPIO_DEBUG
 165 +    printk(KERN_INFO "Set (%s,%s,%s) via /proc/gpio/%s\n",
 166 +                            "GPIO",
 167 +                            direction_is_out ? "out" : "in",
 168 +                            operation_is_set ? "set" : "clear",
 169 +                            summary->name);
 170 +#endif
 171 +
 172 +    return count;
 173 +
 174 +parse_error:
 175 +    printk(KERN_CRIT "Parse error: Expect \"GPIO|[set|clear]|[in|out] ...\"\n");
 176 +    return -EINVAL;
 177 +}
 178 +
 179 +static int proc_ucb1400_ac97_gpio_read(char *page, char **start, off_t off,
 180 +                    int count, int *eof, void *data)
 181 +{
 182 +    char *p = page;
 183 +    gpio_summary_type *summary = data;
 184 +    int len, i; /*, af;*/
 185 +    i = summary->gpio;
 186 +
 187 +    p += sprintf(p, "%d\t%s\t%s\t%s\n", i,
 188 +                    "GPIO",
 189 +                    (snd_ac97_read(summary->ac97, 0x5c) & (0x0001 << i)) ? "out" : "in",
 190 +                    (snd_ac97_read(summary->ac97, 0x5a) & (0x0001 << i)) ? "set" : "clear");
 191 +
 192 +    len = (p - page) - off;
 193 +
 194 +    if(len < 0)
 195 +    {
 196 +            len = 0;
 197 +    }
 198 +
 199 +    *eof = (len <= count) ? 1 : 0;
 200 +    *start = page + off;
 201 +
 202 +    return len;
 203 +}
 204 +
 205 +int patch_ucb1400(struct snd_ac97 * ac97)
 206 +{
 207 +       int err, i;
 208 +
 209 +       proc_gpio_parent = proc_mkdir("gpio", NULL);
 210 +       if(!proc_gpio_parent) return 0;
 211 +
 212 +       for(i=0; i < NUM_GPIO_LINES; i++)
 213 +       {
 214 +               proc_gpios[i] = create_proc_entry(gpio_summaries[i].name, 0644, proc_gpio_parent);
 215 +               if(proc_gpios[i])
 216 +               {
 217 +                       gpio_summaries[i].ac97 = ac97;
 218 +                       proc_gpios[i]->data = &gpio_summaries[i];
 219 +                       proc_gpios[i]->read_proc = proc_ucb1400_ac97_gpio_read;
 220 +                       proc_gpios[i]->write_proc = proc_ucb1400_ac97_gpio_write;
 221 +               }
 222 +       }
 223 +
 224 +       for(i = 0; i < ARRAY_SIZE(ucb1400_snd_ac97_controls); i++) {
 225 +               if((err = snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&ucb1400_snd_ac97_controls[i], ac97))) < 0)
 226 +                       return err;
 227 +       }
 228 +
 229 +       snd_ac97_write_cache(ac97,  AC97_UCB1400_FCSR1,
 230 +                       (0 << 11) |     // 0 base boost
 231 +                       (0 << 9)  |     // 0 treble boost
 232 +                       (0 << 7)  |     // Mode = flat
 233 +                       (1 << 6)  |     // Headphones enable
 234 +                       (0 << 5)  |     // De-emphasis disabled
 235 +                       (1 << 4)  |     // DC filter enabled
 236 +                       (1 << 3)  |     // Hi-pass filter enabled
 237 +                       (0 << 2)  |     // disable interrupt signalling via GPIO_INT
 238 +                       (1 << 0)        // clear ADC overflow status if set
 239 +               );
 240 +
 241 +       snd_ac97_write_cache(ac97, AC97_UCB1400_FCSR2,
 242 +                       (0 << 15) |     // must be 0
 243 +                       (0 << 13) |     // must be 0
 244 +                       (1 << 12) |     // ADC filter enabled
 245 +                       (0 << 10) |     // must be 0
 246 +                       (0 << 4)  |     // Smart low power mode on neither Codec nor PLL
 247 +                       (0 << 0)        // must be 0
 248 +               );
 249 +
 250 +       return 0;
 251 +}
 252 +
 253 +/*
 254   * May 2, 2003 Liam Girdwood <liam.girdwood@wolfsonmicro.com>
 255   *  removed broken wolfson00 patch.
 256   *  added support for WM9705,WM9708,WM9709,WM9710,WM9711,WM9712 and WM9717.
 257 @@ -3408,41 +3633,3 @@ int patch_lm4550(struct snd_ac97 *ac97)
 258         ac97->res_table = lm4550_restbl;
 259         return 0;
 260  }
 261 -
 262 -/*
 263 - *  UCB1400 codec (http://www.semiconductors.philips.com/acrobat_download/datasheets/UCB1400-02.pdf)
 264 - */
 265 -static const struct snd_kcontrol_new snd_ac97_controls_ucb1400[] = {
 266 -/* enable/disable headphone driver which allows direct connection to
 267 -   stereo headphone without the use of external DC blocking
 268 -   capacitors */
 269 -AC97_SINGLE("Headphone Driver", 0x6a, 6, 1, 0),
 270 -/* Filter used to compensate the DC offset is added in the ADC to remove idle
 271 -   tones from the audio band. */
 272 -AC97_SINGLE("DC Filter", 0x6a, 4, 1, 0),
 273 -/* Control smart-low-power mode feature. Allows automatic power down
 274 -   of unused blocks in the ADC analog front end and the PLL. */
 275 -AC97_SINGLE("Smart Low Power Mode", 0x6c, 4, 3, 0),
 276 -};
 277 -
 278 -static int patch_ucb1400_specific(struct snd_ac97 * ac97)
 279 -{
 280 -       int idx, err;
 281 -       for (idx = 0; idx < ARRAY_SIZE(snd_ac97_controls_ucb1400); idx++)
 282 -               if ((err = snd_ctl_add(ac97->bus->card, snd_ctl_new1(&snd_ac97_controls_ucb1400[idx], ac97))) < 0)
 283 -                       return err;
 284 -       return 0;
 285 -}
 286 -
 287 -static struct snd_ac97_build_ops patch_ucb1400_ops = {
 288 -       .build_specific = patch_ucb1400_specific,
 289 -};
 290 -
 291 -int patch_ucb1400(struct snd_ac97 * ac97)
 292 -{
 293 -       ac97->build_ops = &patch_ucb1400_ops;
 294 -       /* enable headphone driver and smart low power mode by default */
 295 -       snd_ac97_write(ac97, 0x6a, 0x0050);
 296 -       snd_ac97_write(ac97, 0x6c, 0x0030);
 297 -       return 0;
 298 -}