cregit-Linux how code gets into the kernel

Release 4.8 sound/ppc/tumbler.c

Directory: sound/ppc
/*
 * PMac Tumbler/Snapper lowlevel functions
 *
 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
 *
 *   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
 *
 *   Rene Rebe <rene.rebe@gmx.net>:
 *     * update from shadow registers on wakeup and headphone plug
 *     * automatically toggle DRC on headphone plug
 *      
 */


#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 <linux/string.h>
#include <linux/of_irq.h>
#include <linux/io.h>
#include <sound/core.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include "pmac.h"
#include "tumbler_volume.h"


#undef DEBUG

#ifdef DEBUG

#define DBG(fmt...) printk(KERN_DEBUG fmt)
#else

#define DBG(fmt...)
#endif


#define IS_G4DA (of_machine_is_compatible("PowerMac3,4"))

/* i2c address for tumbler */

#define TAS_I2C_ADDR	0x34

/* registers */

#define TAS_REG_MCS	0x01	
/* main control */

#define TAS_REG_DRC	0x02

#define TAS_REG_VOL	0x04

#define TAS_REG_TREBLE	0x05

#define TAS_REG_BASS	0x06

#define TAS_REG_INPUT1	0x07

#define TAS_REG_INPUT2	0x08

/* tas3001c */

#define TAS_REG_PCM	TAS_REG_INPUT1
 
/* tas3004 */

#define TAS_REG_LMIX	TAS_REG_INPUT1

#define TAS_REG_RMIX	TAS_REG_INPUT2

#define TAS_REG_MCS2	0x43		
/* main control 2 */

#define TAS_REG_ACS	0x40		
/* analog control */

/* mono volumes for tas3001c/tas3004 */
enum {
	
VOL_IDX_PCM_MONO, /* tas3001c only */
	

VOL_IDX_BASS, VOL_IDX_TREBLE,
	
VOL_IDX_LAST_MONO
};

/* stereo volumes for tas3004 */
enum {
	


VOL_IDX_PCM, VOL_IDX_PCM2, VOL_IDX_ADC,
	
VOL_IDX_LAST_MIX
};


struct pmac_gpio {
	
unsigned int addr;
	
u8 active_val;
	
u8 inactive_val;
	
u8 active_state;
};


struct pmac_tumbler {
	
struct pmac_keywest i2c;
	
struct pmac_gpio audio_reset;
	
struct pmac_gpio amp_mute;
	
struct pmac_gpio line_mute;
	
struct pmac_gpio line_detect;
	
struct pmac_gpio hp_mute;
	
struct pmac_gpio hp_detect;
	
int headphone_irq;
	
int lineout_irq;
	
unsigned int save_master_vol[2];
	
unsigned int master_vol[2];
	
unsigned int save_master_switch[2];
	
unsigned int master_switch[2];
	
unsigned int mono_vol[VOL_IDX_LAST_MONO];
	
unsigned int mix_vol[VOL_IDX_LAST_MIX][2]; /* stereo volumes for tas3004 */
	
int drc_range;
	
int drc_enable;
	
int capture_source;
	
int anded_reset;
	
int auto_mute_notify;
	
int reset_on_sleep;
	
u8  acs;
};


/*
 */


static int send_init_client(struct pmac_keywest *i2c, unsigned int *regs) { while (*regs > 0) { int err, count = 10; do { err = i2c_smbus_write_byte_data(i2c->client, regs[0], regs[1]); if (err >= 0) break; DBG("(W) i2c error %d\n", err); mdelay(10); } while (count--); if (err < 0) return -ENXIO; regs += 2; } return 0; }

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static int tumbler_init_client(struct pmac_keywest *i2c) { static unsigned int regs[] = { /* normal operation, SCLK=64fps, i2s output, i2s input, 16bit width */ TAS_REG_MCS, (1<<6)|(2<<4)|(2<<2)|0, 0, /* terminator */ }; DBG("(I) tumbler init client\n"); return send_init_client(i2c, regs); }

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static int snapper_init_client(struct pmac_keywest *i2c) { static unsigned int regs[] = { /* normal operation, SCLK=64fps, i2s output, 16bit width */ TAS_REG_MCS, (1<<6)|(2<<4)|0, /* normal operation, all-pass mode */ TAS_REG_MCS2, (1<<1), /* normal output, no deemphasis, A input, power-up, line-in */ TAS_REG_ACS, 0, 0, /* terminator */ }; DBG("(I) snapper init client\n"); return send_init_client(i2c, regs); }

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/* * 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); }

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static int check_audio_gpio(struct pmac_gpio *gp) { int ret; if (! gp->addr) return 0; ret = do_gpio_read(gp); return (ret & 0x1) == (gp->active_val & 0x1); }

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static int read_audio_gpio(struct pmac_gpio *gp) { int ret; if (! gp->addr) return 0; ret = do_gpio_read(gp); ret = (ret & 0x02) !=0; return ret == gp->active_state; }

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/* * update master volume */
static int tumbler_set_master_volume(struct pmac_tumbler *mix) { unsigned char block[6]; unsigned int left_vol, right_vol; if (! mix->i2c.client) return -ENODEV; if (! mix->master_switch[0]) left_vol = 0; else { left_vol = mix->master_vol[0]; if (left_vol >= ARRAY_SIZE(master_volume_table)) left_vol = ARRAY_SIZE(master_volume_table) - 1; left_vol = master_volume_table[left_vol]; } if (! mix->master_switch[1]) right_vol = 0; else { right_vol = mix->master_vol[1]; if (right_vol >= ARRAY_SIZE(master_volume_table)) right_vol = ARRAY_SIZE(master_volume_table) - 1; right_vol = master_volume_table[right_vol]; } block[0] = (left_vol >> 16) & 0xff; block[1] = (left_vol >> 8) & 0xff; block[2] = (left_vol >> 0) & 0xff; block[3] = (right_vol >> 16) & 0xff; block[4] = (right_vol >> 8) & 0xff; block[5] = (right_vol >> 0) & 0xff; if (i2c_smbus_write_i2c_block_data(mix->i2c.client, TAS_REG_VOL, 6, block) < 0) { snd_printk(KERN_ERR "failed to set volume \n"); return -EINVAL; } DBG("(I) succeeded to set volume (%u, %u)\n", left_vol, right_vol); return 0; }

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/* output volume */
static int tumbler_info_master_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 2; uinfo->value.integer.min = 0; uinfo->value.integer.max = ARRAY_SIZE(master_volume_table) - 1; return 0; }

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static int tumbler_get_master_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix = chip->mixer_data; ucontrol->value.integer.value[0] = mix->master_vol[0]; ucontrol->value.integer.value[1] = mix->master_vol[1]; return 0; }

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static int tumbler_put_master_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix = chip->mixer_data; unsigned int vol[2]; int change; vol[0] = ucontrol->value.integer.value[0]; vol[1] = ucontrol->value.integer.value[1]; if (vol[0] >= ARRAY_SIZE(master_volume_table) || vol[1] >= ARRAY_SIZE(master_volume_table)) return -EINVAL; change = mix->master_vol[0] != vol[0] || mix->master_vol[1] != vol[1]; if (change) { mix->master_vol[0] = vol[0]; mix->master_vol[1] = vol[1]; tumbler_set_master_volume(mix); } return change; }

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/* output switch */
static int tumbler_get_master_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix = chip->mixer_data; ucontrol->value.integer.value[0] = mix->master_switch[0]; ucontrol->value.integer.value[1] = mix->master_switch[1]; return 0; }

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static int tumbler_put_master_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix = chip->mixer_data; int change; change = mix->master_switch[0] != ucontrol->value.integer.value[0] || mix->master_switch[1] != ucontrol->value.integer.value[1]; if (change) { mix->master_switch[0] = !!ucontrol->value.integer.value[0]; mix->master_switch[1] = !!ucontrol->value.integer.value[1]; tumbler_set_master_volume(mix); } return change; }

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/* * TAS3001c dynamic range compression */ #define TAS3001_DRC_MAX 0x5f
static int tumbler_set_drc(struct pmac_tumbler *mix) { unsigned char val[2]; if (! mix->i2c.client) return -ENODEV; if (mix->drc_enable) { val[0] = 0xc1; /* enable, 3:1 compression */ if (mix->drc_range > TAS3001_DRC_MAX) val[1] = 0xf0; else if (mix->drc_range < 0) val[1] = 0x91; else val[1] = mix->drc_range + 0x91; } else { val[0] = 0; val[1] = 0; } if (i2c_smbus_write_i2c_block_data(mix->i2c.client, TAS_REG_DRC, 2, val) < 0) { snd_printk(KERN_ERR "failed to set DRC\n"); return -EINVAL; } DBG("(I) succeeded to set DRC (%u, %u)\n", val[0], val[1]); return 0; }

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/* * TAS3004 */ #define TAS3004_DRC_MAX 0xef
static int snapper_set_drc(struct pmac_tumbler *mix) { unsigned char val[6]; if (! mix->i2c.client) return -ENODEV; if (mix->drc_enable) val[0] = 0x50; /* 3:1 above threshold */ else val[0] = 0x51; /* disabled */ val[1] = 0x02; /* 1:1 below threshold */ if (mix->drc_range > 0xef) val[2] = 0xef; else if (mix->drc_range < 0) val[2] = 0x00; else val[2] = mix->drc_range; val[3] = 0xb0; val[4] = 0x60; val[5] = 0xa0; if (i2c_smbus_write_i2c_block_data(mix->i2c.client, TAS_REG_DRC, 6, val) < 0) { snd_printk(KERN_ERR "failed to set DRC\n"); return -EINVAL; } DBG("(I) succeeded to set DRC (%u, %u)\n", val[0], val[1]); return 0; }

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static int tumbler_info_drc_value(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = chip->model == PMAC_TUMBLER ? TAS3001_DRC_MAX : TAS3004_DRC_MAX; return 0; }

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static int tumbler_get_drc_value(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix; if (! (mix = chip->mixer_data)) return -ENODEV; ucontrol->value.integer.value[0] = mix->drc_range; return 0; }

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static int tumbler_put_drc_value(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix; unsigned int val; int change; if (! (mix = chip->mixer_data)) return -ENODEV; val = ucontrol->value.integer.value[0]; if (chip->model == PMAC_TUMBLER) { if (val > TAS3001_DRC_MAX) return -EINVAL; } else { if (val > TAS3004_DRC_MAX) return -EINVAL; } change = mix->drc_range != val; if (change) { mix->drc_range = val; if (chip->model == PMAC_TUMBLER) tumbler_set_drc(mix); else snapper_set_drc(mix); } return change; }

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static int tumbler_get_drc_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix; if (! (mix = chip->mixer_data)) return -ENODEV; ucontrol->value.integer.value[0] = mix->drc_enable; return 0; }

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static int tumbler_put_drc_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix; int change; if (! (mix = chip->mixer_data)) return -ENODEV; change = mix->drc_enable != ucontrol->value.integer.value[0]; if (change) { mix->drc_enable = !!ucontrol->value.integer.value[0]; if (chip->model == PMAC_TUMBLER) tumbler_set_drc(mix); else snapper_set_drc(mix); } return change; }

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/* * mono volumes */ struct tumbler_mono_vol { int index; int reg; int bytes; unsigned int max; unsigned int *table; };
static int tumbler_set_mono_volume(struct pmac_tumbler *mix, struct tumbler_mono_vol *info) { unsigned char block[4]; unsigned int vol; int i; if (! mix->i2c.client) return -ENODEV; vol = mix->mono_vol[info->index]; if (vol >= info->max) vol = info->max - 1; vol = info->table[vol]; for (i = 0; i < info->bytes; i++) block[i] = (vol >> ((info->bytes - i - 1) * 8)) & 0xff; if (i2c_smbus_write_i2c_block_data(mix->i2c.client, info->reg, info->bytes, block) < 0) { snd_printk(KERN_ERR "failed to set mono volume %d\n", info->index); return -EINVAL; } return 0; }

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static int tumbler_info_mono(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value; uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = info->max - 1; return 0; }

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static int tumbler_get_mono(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value; struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix; if (! (mix = chip->mixer_data)) return -ENODEV; ucontrol->value.integer.value[0] = mix->mono_vol[info->index]; return 0; }

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static int tumbler_put_mono(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value; struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); struct pmac_tumbler *mix; unsigned int vol; int change; if (! (mix = chip->mixer_data)) return -ENODEV; vol = ucontrol->value.integer.value[0]; if (vol >= info->max) return -EINVAL; change = mix->mono_vol[info->index] != vol; if (change) { mix->mono_vol[info->index] = vol; tumbler_set_mono_volume(mix, info); } return change; }

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/* TAS3001c mono volumes */ static struct tumbler_mono_vol tumbler_pcm_vol_info = { .index = VOL_IDX_PCM_MONO, .reg = TAS_REG_PCM, .bytes = 3, .max = ARRAY_SIZE(mixer_volume_table), .table = mixer_volume_table, }; static struct tumbler_mono_vol tumbler_bass_vol_info = { .index = VOL_IDX_BASS, .reg = TAS_REG_BASS, .bytes = 1, .max = ARRAY_SIZE(bass_volume_table), .table = bass_volume_table, }; static struct tumbler_mono_vol tumbler_treble_vol_info = { .index = VOL_IDX_TREBLE, .reg = TAS_REG_TREBLE, .bytes = 1, .max = ARRAY_SIZE(treble_volume_table), .table = treble_volume_table, }; /* TAS3004 mono volumes */ static struct tumbler_mono_vol snapper_bass_vol_info = { .index = VOL_IDX_BASS, .reg = TAS_REG_BASS, .bytes = 1, .max = ARRAY_SIZE(snapper_bass_volume_table), .table = snapper_bass_volume_table, }; static struct tumbler_mono_vol snapper_treble_vol_info = { .index = VOL_IDX_TREBLE, .reg = TAS_REG_TREBLE, .bytes = 1, .max = ARRAY_SIZE(snapper_treble_volume_table), .table = snapper_treble_volume_table, }; #define DEFINE_MONO(xname,type) { \ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\ .name = xname, \ .info = tumbler_info_mono, \ .get = tumbler_get_mono, \ .put = tumbler_put_mono, \ .private_value = (unsigned long)(&tumbler_##type##_vol_info), \ } #define DEFINE_SNAPPER_MONO(xname,type) { \ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\ .name = xname, \ .info = tumbler_info_mono, \ .get = tumbler_get_mono, \ .put = tumbler_put_mono, \ .private_value = (unsigned long)(&snapper_##type##_vol_info), \ } /* * snapper mixer volumes */
static int snapper_set_mix_vol1(struct pmac_tumbler *mix, int idx, int ch, int reg) { int i, j, vol; unsigned char block[9]; vol = mix->mix_vol[idx][ch]; if (vol >= ARRAY_SIZE(mixer_volume_table)) { vol = ARRAY_SIZE(mixer_volume_table) - 1; mix->mix_vol[