Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Mac Mini "toonie" mixer control |
| 3 | * |
| 4 | * Copyright (c) 2005 by Benjamin Herrenschmidt <benh@kernel.crashing.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <sound/driver.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/i2c.h> |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 25 | #include <linux/kmod.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <sound/core.h> |
| 29 | #include <asm/io.h> |
| 30 | #include <asm/irq.h> |
| 31 | #include <asm/machdep.h> |
| 32 | #include <asm/pmac_feature.h> |
| 33 | #include "pmac.h" |
| 34 | |
| 35 | #undef DEBUG |
| 36 | |
| 37 | #ifdef DEBUG |
| 38 | #define DBG(fmt...) printk(fmt) |
| 39 | #else |
| 40 | #define DBG(fmt...) |
| 41 | #endif |
| 42 | |
| 43 | struct pmac_gpio { |
| 44 | unsigned int addr; |
| 45 | u8 active_val; |
| 46 | u8 inactive_val; |
| 47 | u8 active_state; |
| 48 | }; |
| 49 | |
| 50 | struct pmac_toonie |
| 51 | { |
| 52 | struct pmac_gpio hp_detect_gpio; |
| 53 | struct pmac_gpio hp_mute_gpio; |
| 54 | struct pmac_gpio amp_mute_gpio; |
| 55 | int hp_detect_irq; |
| 56 | int auto_mute_notify; |
| 57 | struct work_struct detect_work; |
| 58 | }; |
| 59 | |
| 60 | |
| 61 | /* |
| 62 | * gpio access |
| 63 | */ |
| 64 | #define do_gpio_write(gp, val) \ |
| 65 | pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, (gp)->addr, val) |
| 66 | #define do_gpio_read(gp) \ |
| 67 | pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, (gp)->addr, 0) |
| 68 | #define tumbler_gpio_free(gp) /* NOP */ |
| 69 | |
| 70 | static void write_audio_gpio(struct pmac_gpio *gp, int active) |
| 71 | { |
| 72 | if (! gp->addr) |
| 73 | return; |
| 74 | active = active ? gp->active_val : gp->inactive_val; |
| 75 | do_gpio_write(gp, active); |
| 76 | DBG("(I) gpio %x write %d\n", gp->addr, active); |
| 77 | } |
| 78 | |
| 79 | static int check_audio_gpio(struct pmac_gpio *gp) |
| 80 | { |
| 81 | int ret; |
| 82 | |
| 83 | if (! gp->addr) |
| 84 | return 0; |
| 85 | |
| 86 | ret = do_gpio_read(gp); |
| 87 | |
| 88 | return (ret & 0xd) == (gp->active_val & 0xd); |
| 89 | } |
| 90 | |
| 91 | static int read_audio_gpio(struct pmac_gpio *gp) |
| 92 | { |
| 93 | int ret; |
| 94 | if (! gp->addr) |
| 95 | return 0; |
| 96 | ret = ((do_gpio_read(gp) & 0x02) !=0); |
| 97 | return ret == gp->active_state; |
| 98 | } |
| 99 | |
| 100 | |
| 101 | enum { TOONIE_MUTE_HP, TOONIE_MUTE_AMP }; |
| 102 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 103 | static int toonie_get_mute_switch(struct snd_kcontrol *kcontrol, |
| 104 | struct snd_ctl_elem_value *ucontrol) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 105 | { |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 106 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 107 | struct pmac_toonie *mix = chip->mixer_data; |
| 108 | struct pmac_gpio *gp; |
| 109 | |
| 110 | if (mix == NULL) |
| 111 | return -ENODEV; |
| 112 | switch(kcontrol->private_value) { |
| 113 | case TOONIE_MUTE_HP: |
| 114 | gp = &mix->hp_mute_gpio; |
| 115 | break; |
| 116 | case TOONIE_MUTE_AMP: |
| 117 | gp = &mix->amp_mute_gpio; |
| 118 | break; |
| 119 | default: |
Alexey Dobriyan | 53b3531 | 2006-03-24 03:16:13 -0800 | [diff] [blame] | 120 | return -EINVAL; |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 121 | } |
| 122 | ucontrol->value.integer.value[0] = !check_audio_gpio(gp); |
| 123 | return 0; |
| 124 | } |
| 125 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 126 | static int toonie_put_mute_switch(struct snd_kcontrol *kcontrol, |
| 127 | struct snd_ctl_elem_value *ucontrol) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 128 | { |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 129 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 130 | struct pmac_toonie *mix = chip->mixer_data; |
| 131 | struct pmac_gpio *gp; |
| 132 | int val; |
| 133 | |
| 134 | if (chip->update_automute && chip->auto_mute) |
| 135 | return 0; /* don't touch in the auto-mute mode */ |
| 136 | |
| 137 | if (mix == NULL) |
| 138 | return -ENODEV; |
| 139 | |
| 140 | switch(kcontrol->private_value) { |
| 141 | case TOONIE_MUTE_HP: |
| 142 | gp = &mix->hp_mute_gpio; |
| 143 | break; |
| 144 | case TOONIE_MUTE_AMP: |
| 145 | gp = &mix->amp_mute_gpio; |
| 146 | break; |
| 147 | default: |
Alexey Dobriyan | 53b3531 | 2006-03-24 03:16:13 -0800 | [diff] [blame] | 148 | return -EINVAL; |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 149 | } |
| 150 | val = ! check_audio_gpio(gp); |
| 151 | if (val != ucontrol->value.integer.value[0]) { |
| 152 | write_audio_gpio(gp, ! ucontrol->value.integer.value[0]); |
| 153 | return 1; |
| 154 | } |
| 155 | return 0; |
| 156 | } |
| 157 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 158 | static struct snd_kcontrol_new toonie_hp_sw __initdata = { |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 159 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 160 | .name = "Headphone Playback Switch", |
| 161 | .info = snd_pmac_boolean_mono_info, |
| 162 | .get = toonie_get_mute_switch, |
| 163 | .put = toonie_put_mute_switch, |
| 164 | .private_value = TOONIE_MUTE_HP, |
| 165 | }; |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 166 | static struct snd_kcontrol_new toonie_speaker_sw __initdata = { |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 167 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 168 | .name = "PC Speaker Playback Switch", |
| 169 | .info = snd_pmac_boolean_mono_info, |
| 170 | .get = toonie_get_mute_switch, |
| 171 | .put = toonie_put_mute_switch, |
| 172 | .private_value = TOONIE_MUTE_AMP, |
| 173 | }; |
| 174 | |
| 175 | /* |
| 176 | * auto-mute stuffs |
| 177 | */ |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 178 | static int toonie_detect_headphone(struct snd_pmac *chip) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 179 | { |
| 180 | struct pmac_toonie *mix = chip->mixer_data; |
| 181 | int detect = 0; |
| 182 | |
| 183 | if (mix->hp_detect_gpio.addr) |
| 184 | detect |= read_audio_gpio(&mix->hp_detect_gpio); |
| 185 | return detect; |
| 186 | } |
| 187 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 188 | static void toonie_check_mute(struct snd_pmac *chip, struct pmac_gpio *gp, int val, |
| 189 | int do_notify, struct snd_kcontrol *sw) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 190 | { |
| 191 | if (check_audio_gpio(gp) != val) { |
| 192 | write_audio_gpio(gp, val); |
| 193 | if (do_notify) |
| 194 | snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
| 195 | &sw->id); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | static void toonie_detect_handler(void *self) |
| 200 | { |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 201 | struct snd_pmac *chip = (struct snd_pmac *) self; |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 202 | struct pmac_toonie *mix; |
| 203 | int headphone; |
| 204 | |
| 205 | if (!chip) |
| 206 | return; |
| 207 | |
| 208 | mix = chip->mixer_data; |
| 209 | snd_assert(mix, return); |
| 210 | |
| 211 | headphone = toonie_detect_headphone(chip); |
| 212 | |
| 213 | DBG("headphone: %d, lineout: %d\n", headphone, lineout); |
| 214 | |
| 215 | if (headphone) { |
| 216 | /* unmute headphone/lineout & mute speaker */ |
| 217 | toonie_check_mute(chip, &mix->hp_mute_gpio, 0, |
| 218 | mix->auto_mute_notify, chip->master_sw_ctl); |
| 219 | toonie_check_mute(chip, &mix->amp_mute_gpio, 1, |
| 220 | mix->auto_mute_notify, chip->speaker_sw_ctl); |
| 221 | } else { |
| 222 | /* unmute speaker, mute others */ |
| 223 | toonie_check_mute(chip, &mix->amp_mute_gpio, 0, |
| 224 | mix->auto_mute_notify, chip->speaker_sw_ctl); |
| 225 | toonie_check_mute(chip, &mix->hp_mute_gpio, 1, |
| 226 | mix->auto_mute_notify, chip->master_sw_ctl); |
| 227 | } |
| 228 | if (mix->auto_mute_notify) { |
| 229 | snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
| 230 | &chip->hp_detect_ctl->id); |
| 231 | } |
| 232 | } |
| 233 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 234 | static void toonie_update_automute(struct snd_pmac *chip, int do_notify) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 235 | { |
| 236 | if (chip->auto_mute) { |
| 237 | struct pmac_toonie *mix; |
| 238 | mix = chip->mixer_data; |
| 239 | snd_assert(mix, return); |
| 240 | mix->auto_mute_notify = do_notify; |
| 241 | schedule_work(&mix->detect_work); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | /* interrupt - headphone plug changed */ |
| 246 | static irqreturn_t toonie_hp_intr(int irq, void *devid, struct pt_regs *regs) |
| 247 | { |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 248 | struct snd_pmac *chip = devid; |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 249 | |
| 250 | if (chip->update_automute && chip->initialized) { |
| 251 | chip->update_automute(chip, 1); |
| 252 | return IRQ_HANDLED; |
| 253 | } |
| 254 | return IRQ_NONE; |
| 255 | } |
| 256 | |
| 257 | /* look for audio gpio device */ |
| 258 | static int find_audio_gpio(const char *name, const char *platform, |
| 259 | struct pmac_gpio *gp) |
| 260 | { |
| 261 | struct device_node *np; |
| 262 | u32 *base, addr; |
| 263 | |
| 264 | if (! (np = find_devices("gpio"))) |
| 265 | return -ENODEV; |
| 266 | |
| 267 | for (np = np->child; np; np = np->sibling) { |
| 268 | char *property = get_property(np, "audio-gpio", NULL); |
| 269 | if (property && strcmp(property, name) == 0) |
| 270 | break; |
| 271 | if (device_is_compatible(np, name)) |
| 272 | break; |
| 273 | } |
| 274 | if (np == NULL) |
| 275 | return -ENODEV; |
| 276 | |
| 277 | base = (u32 *)get_property(np, "AAPL,address", NULL); |
| 278 | if (! base) { |
| 279 | base = (u32 *)get_property(np, "reg", NULL); |
| 280 | if (!base) { |
Benjamin Herrenschmidt | 7eb8073 | 2005-05-01 18:54:23 -0700 | [diff] [blame] | 281 | DBG("(E) cannot find address for device %s !\n", name); |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 282 | return -ENODEV; |
| 283 | } |
| 284 | addr = *base; |
| 285 | if (addr < 0x50) |
| 286 | addr += 0x50; |
| 287 | } else |
| 288 | addr = *base; |
| 289 | |
| 290 | gp->addr = addr & 0x0000ffff; |
| 291 | |
| 292 | /* Try to find the active state, default to 0 ! */ |
| 293 | base = (u32 *)get_property(np, "audio-gpio-active-state", NULL); |
| 294 | if (base) { |
| 295 | gp->active_state = *base; |
| 296 | gp->active_val = (*base) ? 0x5 : 0x4; |
| 297 | gp->inactive_val = (*base) ? 0x4 : 0x5; |
| 298 | } else { |
| 299 | u32 *prop = NULL; |
| 300 | gp->active_state = 0; |
| 301 | gp->active_val = 0x4; |
| 302 | gp->inactive_val = 0x5; |
| 303 | /* Here are some crude hacks to extract the GPIO polarity and |
| 304 | * open collector informations out of the do-platform script |
| 305 | * as we don't yet have an interpreter for these things |
| 306 | */ |
| 307 | if (platform) |
| 308 | prop = (u32 *)get_property(np, platform, NULL); |
| 309 | if (prop) { |
| 310 | if (prop[3] == 0x9 && prop[4] == 0x9) { |
| 311 | gp->active_val = 0xd; |
| 312 | gp->inactive_val = 0xc; |
| 313 | } |
| 314 | if (prop[3] == 0x1 && prop[4] == 0x1) { |
| 315 | gp->active_val = 0x5; |
| 316 | gp->inactive_val = 0x4; |
| 317 | } |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | DBG("(I) GPIO device %s found, offset: %x, active state: %d !\n", |
Benjamin Herrenschmidt | 6995f17 | 2005-05-02 14:45:12 +1000 | [diff] [blame] | 322 | name, gp->addr, gp->active_state); |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 323 | |
| 324 | return (np->n_intrs > 0) ? np->intrs[0].line : 0; |
| 325 | } |
| 326 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 327 | static void toonie_cleanup(struct snd_pmac *chip) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 328 | { |
| 329 | struct pmac_toonie *mix = chip->mixer_data; |
| 330 | if (! mix) |
| 331 | return; |
| 332 | if (mix->hp_detect_irq >= 0) |
| 333 | free_irq(mix->hp_detect_irq, chip); |
| 334 | kfree(mix); |
| 335 | chip->mixer_data = NULL; |
| 336 | } |
| 337 | |
Takashi Iwai | 65b29f5 | 2005-11-17 15:09:46 +0100 | [diff] [blame] | 338 | int snd_pmac_toonie_init(struct snd_pmac *chip) |
Benjamin Herrenschmidt | 1f7b49d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 339 | { |
| 340 | struct pmac_toonie *mix; |
| 341 | |
| 342 | mix = kmalloc(sizeof(*mix), GFP_KERNEL); |
| 343 | if (! mix) |
| 344 | return -ENOMEM; |
| 345 | |
| 346 | chip->mixer_data = mix; |
| 347 | chip->mixer_free = toonie_cleanup; |
| 348 | |
| 349 | find_audio_gpio("headphone-mute", NULL, &mix->hp_mute_gpio); |
| 350 | find_audio_gpio("amp-mute", NULL, &mix->amp_mute_gpio); |
| 351 | mix->hp_detect_irq = find_audio_gpio("headphone-detect", |
| 352 | NULL, &mix->hp_detect_gpio); |
| 353 | |
| 354 | strcpy(chip->card->mixername, "PowerMac Toonie"); |
| 355 | |
| 356 | chip->master_sw_ctl = snd_ctl_new1(&toonie_hp_sw, chip); |
| 357 | snd_ctl_add(chip->card, chip->master_sw_ctl); |
| 358 | |
| 359 | chip->speaker_sw_ctl = snd_ctl_new1(&toonie_speaker_sw, chip); |
| 360 | snd_ctl_add(chip->card, chip->speaker_sw_ctl); |
| 361 | |
| 362 | INIT_WORK(&mix->detect_work, toonie_detect_handler, (void *)chip); |
| 363 | |
| 364 | if (mix->hp_detect_irq >= 0) { |
| 365 | snd_pmac_add_automute(chip); |
| 366 | |
| 367 | chip->detect_headphone = toonie_detect_headphone; |
| 368 | chip->update_automute = toonie_update_automute; |
| 369 | toonie_update_automute(chip, 0); |
| 370 | |
| 371 | if (request_irq(mix->hp_detect_irq, toonie_hp_intr, 0, |
| 372 | "Sound Headphone Detection", chip) < 0) |
| 373 | mix->hp_detect_irq = -1; |
| 374 | } |
| 375 | |
| 376 | return 0; |
| 377 | } |
| 378 | |