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7bbd827750
This patch hacks the current PowerMac Alsa driver to add some basic support of analog sound output to some desktop G5s. It has severe limitations though: - Only 44100Khz 16 bits - Only work on G5 models using a TAS3004 analog code, that is early single CPU desktops and all dual CPU desktops at this date, but none of the more recent ones like iMac G5. - It does analog only, no digital/SPDIF support at all, no native AC3 support Better support would require a complete rewrite of the driver (which I am working on, but don't hold your breath), to properly support the diversity of apple sound HW setup, including dual codecs, several i2s busses, all the new codecs used in the new machines, proper clock switching with digital, etc etc etc... This patch applies on top of the other PowerMac sound patches I posted in the past couple of days (new powerbook support and sleep fixes). Note: This is a FAQ entry for PowerMac sound support with TI codecs: They have a feature called "DRC" which is automatically enabled for the internal speaker (at least when auto mute control is enabled) which will cause your sound to fade out to nothing after half a second of playback if you don't set a proper "DRC Range" in the mixer. So if you have a problem like that, check alsamixer and raise your DRC Range to something reasonable. Note2: This patch will also add auto-mute of the speaker when line-out jack is used on some earlier desktop G4s (and on the G5) in addition to the headphone jack. If that behaviour isn't what you want, just disable auto-muting and use the manual mute controls in alsamixer. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
219 lines
5.2 KiB
C
219 lines
5.2 KiB
C
/*
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* Driver for PowerMac onboard soundchips
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* Copyright (c) 2001 by Takashi Iwai <tiwai@suse.de>
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* based on dmasound.c.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __PMAC_H
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#define __PMAC_H
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#include <linux/version.h>
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#include <sound/control.h>
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#include <sound/pcm.h>
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#include "awacs.h"
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#include <linux/adb.h>
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#ifdef CONFIG_ADB_CUDA
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#include <linux/cuda.h>
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#endif
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#ifdef CONFIG_ADB_PMU
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#include <linux/pmu.h>
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#endif
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#include <linux/nvram.h>
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#include <linux/tty.h>
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#include <linux/vt_kern.h>
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#include <asm/dbdma.h>
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#include <asm/prom.h>
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#include <asm/machdep.h>
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/* maximum number of fragments */
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#define PMAC_MAX_FRAGS 32
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#define PMAC_SUPPORT_AUTOMUTE
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/*
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* typedefs
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*/
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typedef struct snd_pmac pmac_t;
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typedef struct snd_pmac_stream pmac_stream_t;
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typedef struct snd_pmac_beep pmac_beep_t;
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typedef struct snd_pmac_dbdma pmac_dbdma_t;
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/*
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* DBDMA space
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*/
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struct snd_pmac_dbdma {
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dma_addr_t dma_base;
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dma_addr_t addr;
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struct dbdma_cmd __iomem *cmds;
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void *space;
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int size;
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};
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/*
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* playback/capture stream
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*/
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struct snd_pmac_stream {
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int running; /* boolean */
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int stream; /* PLAYBACK/CAPTURE */
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int dma_size; /* in bytes */
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int period_size; /* in bytes */
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int buffer_size; /* in kbytes */
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int nperiods, cur_period;
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pmac_dbdma_t cmd;
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volatile struct dbdma_regs __iomem *dma;
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snd_pcm_substream_t *substream;
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unsigned int cur_freqs; /* currently available frequencies */
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unsigned int cur_formats; /* currently available formats */
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};
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/*
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*/
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enum snd_pmac_model {
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PMAC_AWACS, PMAC_SCREAMER, PMAC_BURGUNDY, PMAC_DACA, PMAC_TUMBLER, PMAC_SNAPPER
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};
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struct snd_pmac {
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snd_card_t *card;
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/* h/w info */
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struct device_node *node;
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struct pci_dev *pdev;
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unsigned int revision;
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unsigned int manufacturer;
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unsigned int subframe;
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unsigned int device_id;
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enum snd_pmac_model model;
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unsigned int has_iic : 1;
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unsigned int is_pbook_3400 : 1;
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unsigned int is_pbook_G3 : 1;
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unsigned int is_k2 : 1;
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unsigned int can_byte_swap : 1;
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unsigned int can_duplex : 1;
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unsigned int can_capture : 1;
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unsigned int auto_mute : 1;
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unsigned int initialized : 1;
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unsigned int feature_is_set : 1;
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unsigned int of_requested;
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int num_freqs;
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int *freq_table;
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unsigned int freqs_ok; /* bit flags */
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unsigned int formats_ok; /* pcm hwinfo */
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int active;
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int rate_index;
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int format; /* current format */
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spinlock_t reg_lock;
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volatile struct awacs_regs __iomem *awacs;
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int awacs_reg[8]; /* register cache */
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unsigned int hp_stat_mask;
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unsigned char __iomem *latch_base;
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unsigned char __iomem *macio_base;
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pmac_stream_t playback;
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pmac_stream_t capture;
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pmac_dbdma_t extra_dma;
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int irq, tx_irq, rx_irq;
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snd_pcm_t *pcm;
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pmac_beep_t *beep;
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unsigned int control_mask; /* control mask */
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/* mixer stuffs */
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void *mixer_data;
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void (*mixer_free)(pmac_t *);
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snd_kcontrol_t *master_sw_ctl;
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snd_kcontrol_t *speaker_sw_ctl;
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snd_kcontrol_t *drc_sw_ctl; /* only used for tumbler -ReneR */
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snd_kcontrol_t *hp_detect_ctl;
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snd_kcontrol_t *lineout_sw_ctl;
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/* lowlevel callbacks */
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void (*set_format)(pmac_t *chip);
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void (*update_automute)(pmac_t *chip, int do_notify);
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int (*detect_headphone)(pmac_t *chip);
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#ifdef CONFIG_PMAC_PBOOK
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void (*suspend)(pmac_t *chip);
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void (*resume)(pmac_t *chip);
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#endif
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};
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/* exported functions */
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int snd_pmac_new(snd_card_t *card, pmac_t **chip_return);
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int snd_pmac_pcm_new(pmac_t *chip);
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int snd_pmac_attach_beep(pmac_t *chip);
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void snd_pmac_detach_beep(pmac_t *chip);
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void snd_pmac_beep_stop(pmac_t *chip);
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unsigned int snd_pmac_rate_index(pmac_t *chip, pmac_stream_t *rec, unsigned int rate);
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void snd_pmac_beep_dma_start(pmac_t *chip, int bytes, unsigned long addr, int speed);
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void snd_pmac_beep_dma_stop(pmac_t *chip);
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/* initialize mixer */
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int snd_pmac_awacs_init(pmac_t *chip);
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int snd_pmac_burgundy_init(pmac_t *chip);
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int snd_pmac_daca_init(pmac_t *chip);
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int snd_pmac_tumbler_init(pmac_t *chip);
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int snd_pmac_tumbler_post_init(void);
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/* i2c functions */
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typedef struct snd_pmac_keywest {
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int addr;
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struct i2c_client *client;
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int id;
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int (*init_client)(struct snd_pmac_keywest *i2c);
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char *name;
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} pmac_keywest_t;
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int snd_pmac_keywest_init(pmac_keywest_t *i2c);
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void snd_pmac_keywest_cleanup(pmac_keywest_t *i2c);
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/* misc */
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int snd_pmac_boolean_stereo_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo);
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int snd_pmac_boolean_mono_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo);
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int snd_pmac_add_automute(pmac_t *chip);
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#define big_mdelay(msec) do {\
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set_current_state(TASK_UNINTERRUPTIBLE);\
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schedule_timeout(((msec) * HZ + 999) / 1000);\
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} while (0)
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#endif /* __PMAC_H */
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