diff options
| -rw-r--r-- | sound/ppc/toonie.c | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/sound/ppc/toonie.c b/sound/ppc/toonie.c index 1ac7c8552f50..e69de29bb2d1 100644 --- a/sound/ppc/toonie.c +++ b/sound/ppc/toonie.c @@ -1,378 +0,0 @@ -/* - * Mac Mini "toonie" mixer control - * - * Copyright (c) 2005 by Benjamin Herrenschmidt <benh@kernel.crashing.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <sound/driver.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/i2c.h> -#include <linux/kmod.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <sound/core.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/machdep.h> -#include <asm/pmac_feature.h> -#include "pmac.h" - -#undef DEBUG - -#ifdef DEBUG -#define DBG(fmt...) printk(fmt) -#else -#define DBG(fmt...) -#endif - -struct pmac_gpio { - unsigned int addr; - u8 active_val; - u8 inactive_val; - u8 active_state; -}; - -struct pmac_toonie -{ - struct pmac_gpio hp_detect_gpio; - struct pmac_gpio hp_mute_gpio; - struct pmac_gpio amp_mute_gpio; - int hp_detect_irq; - int auto_mute_notify; - struct work_struct detect_work; -}; - - -/* - * gpio access - */ -#define do_gpio_write(gp, val) \ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, (gp)->addr, val) -#define do_gpio_read(gp) \ - pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, (gp)->addr, 0) -#define tumbler_gpio_free(gp) /* NOP */ - -static void write_audio_gpio(struct pmac_gpio *gp, int active) -{ - if (! gp->addr) - return; - active = active ? gp->active_val : gp->inactive_val; - do_gpio_write(gp, active); - DBG("(I) gpio %x write %d\n", gp->addr, active); -} - -static int check_audio_gpio(struct pmac_gpio *gp) -{ - int ret; - - if (! gp->addr) - return 0; - - ret = do_gpio_read(gp); - - return (ret & 0xd) == (gp->active_val & 0xd); -} - -static int read_audio_gpio(struct pmac_gpio *gp) -{ - int ret; - if (! gp->addr) - return 0; - ret = ((do_gpio_read(gp) & 0x02) !=0); - return ret == gp->active_state; -} - - -enum { TOONIE_MUTE_HP, TOONIE_MUTE_AMP }; - -static int toonie_get_mute_switch(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); - struct pmac_toonie *mix = chip->mixer_data; - struct pmac_gpio *gp; - - if (mix == NULL) - return -ENODEV; - switch(kcontrol->private_value) { - case TOONIE_MUTE_HP: - gp = &mix->hp_mute_gpio; - break; - case TOONIE_MUTE_AMP: - gp = &mix->amp_mute_gpio; - break; - default: - return -EINVAL; - } - ucontrol->value.integer.value[0] = !check_audio_gpio(gp); - return 0; -} - -static int toonie_put_mute_switch(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); - struct pmac_toonie *mix = chip->mixer_data; - struct pmac_gpio *gp; - int val; - - if (chip->update_automute && chip->auto_mute) - return 0; /* don't touch in the auto-mute mode */ - - if (mix == NULL) - return -ENODEV; - - switch(kcontrol->private_value) { - case TOONIE_MUTE_HP: - gp = &mix->hp_mute_gpio; - break; - case TOONIE_MUTE_AMP: - gp = &mix->amp_mute_gpio; - break; - default: - return -EINVAL; - } - val = ! check_audio_gpio(gp); - if (val != ucontrol->value.integer.value[0]) { - write_audio_gpio(gp, ! ucontrol->value.integer.value[0]); - return 1; - } - return 0; -} - -static struct snd_kcontrol_new toonie_hp_sw __initdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Headphone Playback Switch", - .info = snd_pmac_boolean_mono_info, - .get = toonie_get_mute_switch, - .put = toonie_put_mute_switch, - .private_value = TOONIE_MUTE_HP, -}; -static struct snd_kcontrol_new toonie_speaker_sw __initdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "PC Speaker Playback Switch", - .info = snd_pmac_boolean_mono_info, - .get = toonie_get_mute_switch, - .put = toonie_put_mute_switch, - .private_value = TOONIE_MUTE_AMP, -}; - -/* - * auto-mute stuffs - */ -static int toonie_detect_headphone(struct snd_pmac *chip) -{ - struct pmac_toonie *mix = chip->mixer_data; - int detect = 0; - - if (mix->hp_detect_gpio.addr) - detect |= read_audio_gpio(&mix->hp_detect_gpio); - return detect; -} - -static void toonie_check_mute(struct snd_pmac *chip, struct pmac_gpio *gp, int val, - int do_notify, struct snd_kcontrol *sw) -{ - if (check_audio_gpio(gp) != val) { - write_audio_gpio(gp, val); - if (do_notify) - snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, - &sw->id); - } -} - -static void toonie_detect_handler(void *self) -{ - struct snd_pmac *chip = (struct snd_pmac *) self; - struct pmac_toonie *mix; - int headphone; - - if (!chip) - return; - - mix = chip->mixer_data; - snd_assert(mix, return); - - headphone = toonie_detect_headphone(chip); - - DBG("headphone: %d, lineout: %d\n", headphone, lineout); - - if (headphone) { - /* unmute headphone/lineout & mute speaker */ - toonie_check_mute(chip, &mix->hp_mute_gpio, 0, - mix->auto_mute_notify, chip->master_sw_ctl); - toonie_check_mute(chip, &mix->amp_mute_gpio, 1, - mix->auto_mute_notify, chip->speaker_sw_ctl); - } else { - /* unmute speaker, mute others */ - toonie_check_mute(chip, &mix->amp_mute_gpio, 0, - mix->auto_mute_notify, chip->speaker_sw_ctl); - toonie_check_mute(chip, &mix->hp_mute_gpio, 1, - mix->auto_mute_notify, chip->master_sw_ctl); - } - if (mix->auto_mute_notify) { - snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, - &chip->hp_detect_ctl->id); - } -} - -static void toonie_update_automute(struct snd_pmac *chip, int do_notify) -{ - if (chip->auto_mute) { - struct pmac_toonie *mix; - mix = chip->mixer_data; - snd_assert(mix, return); - mix->auto_mute_notify = do_notify; - schedule_work(&mix->detect_work); - } -} - -/* interrupt - headphone plug changed */ -static irqreturn_t toonie_hp_intr(int irq, void *devid, struct pt_regs *regs) -{ - struct snd_pmac *chip = devid; - - if (chip->update_automute && chip->initialized) { - chip->update_automute(chip, 1); - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -/* look for audio gpio device */ -static int find_audio_gpio(const char *name, const char *platform, - struct pmac_gpio *gp) -{ - struct device_node *np; - u32 *base, addr; - - if (! (np = find_devices("gpio"))) - return -ENODEV; - - for (np = np->child; np; np = np->sibling) { - char *property = get_property(np, "audio-gpio", NULL); - if (property && strcmp(property, name) == 0) - break; - if (device_is_compatible(np, name)) - break; - } - if (np == NULL) - return -ENODEV; - - base = (u32 *)get_property(np, "AAPL,address", NULL); - if (! base) { - base = (u32 *)get_property(np, "reg", NULL); - if (!base) { - DBG("(E) cannot find address for device %s !\n", name); - return -ENODEV; - } - addr = *base; - if (addr < 0x50) - addr += 0x50; - } else - addr = *base; - - gp->addr = addr & 0x0000ffff; - - /* Try to find the active state, default to 0 ! */ - base = (u32 *)get_property(np, "audio-gpio-active-state", NULL); - if (base) { - gp->active_state = *base; - gp->active_val = (*base) ? 0x5 : 0x4; - gp->inactive_val = (*base) ? 0x4 : 0x5; - } else { - u32 *prop = NULL; - gp->active_state = 0; - gp->active_val = 0x4; - gp->inactive_val = 0x5; - /* Here are some crude hacks to extract the GPIO polarity and - * open collector informations out of the do-platform script - * as we don't yet have an interpreter for these things - */ - if (platform) - prop = (u32 *)get_property(np, platform, NULL); - if (prop) { - if (prop[3] == 0x9 && prop[4] == 0x9) { - gp->active_val = 0xd; - gp->inactive_val = 0xc; - } - if (prop[3] == 0x1 && prop[4] == 0x1) { - gp->active_val = 0x5; - gp->inactive_val = 0x4; - } - } - } - - DBG("(I) GPIO device %s found, offset: %x, active state: %d !\n", - name, gp->addr, gp->active_state); - - return (np->n_intrs > 0) ? np->intrs[0].line : 0; -} - -static void toonie_cleanup(struct snd_pmac *chip) -{ - struct pmac_toonie *mix = chip->mixer_data; - if (! mix) - return; - if (mix->hp_detect_irq >= 0) - free_irq(mix->hp_detect_irq, chip); - kfree(mix); - chip->mixer_data = NULL; -} - -int __init snd_pmac_toonie_init(struct snd_pmac *chip) -{ - struct pmac_toonie *mix; - - mix = kmalloc(sizeof(*mix), GFP_KERNEL); - if (! mix) - return -ENOMEM; - - chip->mixer_data = mix; - chip->mixer_free = toonie_cleanup; - - find_audio_gpio("headphone-mute", NULL, &mix->hp_mute_gpio); - find_audio_gpio("amp-mute", NULL, &mix->amp_mute_gpio); - mix->hp_detect_irq = find_audio_gpio("headphone-detect", - NULL, &mix->hp_detect_gpio); - - strcpy(chip->card->mixername, "PowerMac Toonie"); - - chip->master_sw_ctl = snd_ctl_new1(&toonie_hp_sw, chip); - snd_ctl_add(chip->card, chip->master_sw_ctl); - - chip->speaker_sw_ctl = snd_ctl_new1(&toonie_speaker_sw, chip); - snd_ctl_add(chip->card, chip->speaker_sw_ctl); - - INIT_WORK(&mix->detect_work, toonie_detect_handler, (void *)chip); - - if (mix->hp_detect_irq >= 0) { - snd_pmac_add_automute(chip); - - chip->detect_headphone = toonie_detect_headphone; - chip->update_automute = toonie_update_automute; - toonie_update_automute(chip, 0); - - if (request_irq(mix->hp_detect_irq, toonie_hp_intr, 0, - "Sound Headphone Detection", chip) < 0) - mix->hp_detect_irq = -1; - } - - return 0; -} - |