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android_kernel_xiaomi_sm8350/sound/isa/ad1848/ad1848_lib.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

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/*
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
* Routines for control of AD1848/AD1847/CS4248
*
*
* 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
*
*/
#define SNDRV_MAIN_OBJECT_FILE
#include <sound/driver.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
#include <sound/ad1848.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>
#include <asm/io.h>
#include <asm/dma.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
MODULE_LICENSE("GPL");
#if 0
#define SNDRV_DEBUG_MCE
#endif
/*
* Some variables
*/
static unsigned char freq_bits[14] = {
/* 5510 */ 0x00 | AD1848_XTAL2,
/* 6620 */ 0x0E | AD1848_XTAL2,
/* 8000 */ 0x00 | AD1848_XTAL1,
/* 9600 */ 0x0E | AD1848_XTAL1,
/* 11025 */ 0x02 | AD1848_XTAL2,
/* 16000 */ 0x02 | AD1848_XTAL1,
/* 18900 */ 0x04 | AD1848_XTAL2,
/* 22050 */ 0x06 | AD1848_XTAL2,
/* 27042 */ 0x04 | AD1848_XTAL1,
/* 32000 */ 0x06 | AD1848_XTAL1,
/* 33075 */ 0x0C | AD1848_XTAL2,
/* 37800 */ 0x08 | AD1848_XTAL2,
/* 44100 */ 0x0A | AD1848_XTAL2,
/* 48000 */ 0x0C | AD1848_XTAL1
};
static unsigned int rates[14] = {
5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
27042, 32000, 33075, 37800, 44100, 48000
};
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = 14,
.list = rates,
.mask = 0,
};
static unsigned char snd_ad1848_original_image[16] =
{
0x00, /* 00 - lic */
0x00, /* 01 - ric */
0x9f, /* 02 - la1ic */
0x9f, /* 03 - ra1ic */
0x9f, /* 04 - la2ic */
0x9f, /* 05 - ra2ic */
0xbf, /* 06 - loc */
0xbf, /* 07 - roc */
0x20, /* 08 - dfr */
AD1848_AUTOCALIB, /* 09 - ic */
0x00, /* 0a - pc */
0x00, /* 0b - ti */
0x00, /* 0c - mi */
0x00, /* 0d - lbc */
0x00, /* 0e - dru */
0x00, /* 0f - drl */
};
/*
* Basic I/O functions
*/
void snd_ad1848_out(struct snd_ad1848 *chip,
unsigned char reg,
unsigned char value)
{
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
outb(chip->image[reg] = value, AD1848P(chip, REG));
mb();
#if 0
printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
#endif
}
EXPORT_SYMBOL(snd_ad1848_out);
static void snd_ad1848_dout(struct snd_ad1848 *chip,
unsigned char reg, unsigned char value)
{
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
outb(value, AD1848P(chip, REG));
mb();
}
static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
{
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x\n", reg);
#endif
outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
mb();
return inb(AD1848P(chip, REG));
}
#if 0
static void snd_ad1848_debug(struct snd_ad1848 *chip)
{
printk("AD1848 REGS: INDEX = 0x%02x ", inb(AD1848P(chip, REGSEL)));
printk(" STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
printk(" 0x00: left input = 0x%02x ", snd_ad1848_in(chip, 0x00));
printk(" 0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
printk(" 0x01: right input = 0x%02x ", snd_ad1848_in(chip, 0x01));
printk(" 0x09: iface (CFIG 1) = 0x%02x\n", snd_ad1848_in(chip, 0x09));
printk(" 0x02: AUXA left = 0x%02x ", snd_ad1848_in(chip, 0x02));
printk(" 0x0a: pin control = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
printk(" 0x03: AUXA right = 0x%02x ", snd_ad1848_in(chip, 0x03));
printk(" 0x0b: init & status = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
printk(" 0x04: AUXB left = 0x%02x ", snd_ad1848_in(chip, 0x04));
printk(" 0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
printk(" 0x05: AUXB right = 0x%02x ", snd_ad1848_in(chip, 0x05));
printk(" 0x0d: loopback = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
printk(" 0x06: left output = 0x%02x ", snd_ad1848_in(chip, 0x06));
printk(" 0x0e: data upr count = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
printk(" 0x07: right output = 0x%02x ", snd_ad1848_in(chip, 0x07));
printk(" 0x0f: data lwr count = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
}
#endif
/*
* AD1848 detection / MCE routines
*/
static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
{
unsigned long flags;
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
#endif
spin_lock_irqsave(&chip->reg_lock, flags);
chip->mce_bit |= AD1848_MCE;
timeout = inb(AD1848P(chip, REGSEL));
if (timeout == 0x80)
snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
if (!(timeout & AD1848_MCE))
outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
{
unsigned long flags;
int timeout;
signed long time;
spin_lock_irqsave(&chip->reg_lock, flags);
for (timeout = 5; timeout > 0; timeout--)
inb(AD1848P(chip, REGSEL));
/* end of cleanup sequence */
for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#if 0
printk("(1) timeout = %i\n", timeout);
#endif
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
#endif
chip->mce_bit &= ~AD1848_MCE;
timeout = inb(AD1848P(chip, REGSEL));
outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
if (timeout == 0x80)
snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
if ((timeout & AD1848_MCE) == 0) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return;
}
/* calibration process */
for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
snd_printd("mce_down - auto calibration time out (1)\n");
spin_unlock_irqrestore(&chip->reg_lock, flags);
return;
}
#if 0
printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
#endif
time = HZ / 4;
while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (time <= 0) {
snd_printk(KERN_ERR "mce_down - auto calibration time out (2)\n");
return;
}
time = schedule_timeout_interruptible(time);
spin_lock_irqsave(&chip->reg_lock, flags);
}
#if 0
printk("(3) jiffies = %li\n", jiffies);
#endif
time = HZ / 10;
while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (time <= 0) {
snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
return;
}
time = schedule_timeout_interruptible(time);
spin_lock_irqsave(&chip->reg_lock, flags);
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
#if 0
printk("(4) jiffies = %li\n", jiffies);
snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
#endif
}
static unsigned int snd_ad1848_get_count(unsigned char format,
unsigned int size)
{
switch (format & 0xe0) {
case AD1848_LINEAR_16:
size >>= 1;
break;
}
if (format & AD1848_STEREO)
size >>= 1;
return size;
}
static int snd_ad1848_trigger(struct snd_ad1848 *chip, unsigned char what,
int channel, int cmd)
{
int result = 0;
#if 0
printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
#endif
spin_lock(&chip->reg_lock);
if (cmd == SNDRV_PCM_TRIGGER_START) {
if (chip->image[AD1848_IFACE_CTRL] & what) {
spin_unlock(&chip->reg_lock);
return 0;
}
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
chip->mode |= AD1848_MODE_RUNNING;
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
spin_unlock(&chip->reg_lock);
return 0;
}
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
chip->mode &= ~AD1848_MODE_RUNNING;
} else {
result = -EINVAL;
}
spin_unlock(&chip->reg_lock);
return result;
}
/*
* CODEC I/O
*/
static unsigned char snd_ad1848_get_rate(unsigned int rate)
{
int i;
for (i = 0; i < 14; i++)
if (rate == rates[i])
return freq_bits[i];
snd_BUG();
return freq_bits[13];
}
static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
return snd_pcm_lib_ioctl(substream, cmd, arg);
}
static unsigned char snd_ad1848_get_format(int format, int channels)
{
unsigned char rformat;
rformat = AD1848_LINEAR_8;
switch (format) {
case SNDRV_PCM_FORMAT_A_LAW: rformat = AD1848_ALAW_8; break;
case SNDRV_PCM_FORMAT_MU_LAW: rformat = AD1848_ULAW_8; break;
case SNDRV_PCM_FORMAT_S16_LE: rformat = AD1848_LINEAR_16; break;
}
if (channels > 1)
rformat |= AD1848_STEREO;
#if 0
snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
#endif
return rformat;
}
static void snd_ad1848_calibrate_mute(struct snd_ad1848 *chip, int mute)
{
unsigned long flags;
mute = mute ? 1 : 0;
spin_lock_irqsave(&chip->reg_lock, flags);
if (chip->calibrate_mute == mute) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return;
}
if (!mute) {
snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
}
snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
chip->calibrate_mute = mute;
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_ad1848_set_data_format(struct snd_ad1848 *chip, struct snd_pcm_hw_params *hw_params)
{
if (hw_params == NULL) {
chip->image[AD1848_DATA_FORMAT] = 0x20;
} else {
chip->image[AD1848_DATA_FORMAT] =
snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
snd_ad1848_get_rate(params_rate(hw_params));
}
// snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
}
static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if (chip->mode & AD1848_MODE_OPEN) {
mutex_unlock(&chip->open_mutex);
return -EAGAIN;
}
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("open: (1)\n");
#endif
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
AD1848_CALIB_MODE);
chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("open: (2)\n");
#endif
snd_ad1848_set_data_format(chip, NULL);
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("open: (3)\n");
#endif
/* ok. now enable and ack CODEC IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
static void snd_ad1848_close(struct snd_ad1848 *chip)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if (!chip->mode) {
mutex_unlock(&chip->open_mutex);
return;
}
/* disable IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
/* now disable capture & playback */
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
/* clear IRQ again */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = 0;
mutex_unlock(&chip->open_mutex);
}
/*
* ok.. exported functions..
*/
static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
}
static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
}
static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
snd_ad1848_calibrate_mute(chip, 1);
snd_ad1848_set_data_format(chip, hw_params);
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
snd_ad1848_calibrate_mute(chip, 0);
return 0;
}
static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
chip->dma_size = size;
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
snd_ad1848_calibrate_mute(chip, 1);
snd_ad1848_set_data_format(chip, hw_params);
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
snd_ad1848_calibrate_mute(chip, 0);
return 0;
}
static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
chip->dma_size = size;
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
{
struct snd_ad1848 *chip = dev_id;
if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
(chip->mode & AD1848_MODE_RUNNING))
snd_pcm_period_elapsed(chip->playback_substream);
if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
(chip->mode & AD1848_MODE_RUNNING))
snd_pcm_period_elapsed(chip->capture_substream);
outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
return IRQ_HANDLED;
}
static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
size_t ptr;
if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
return 0;
ptr = snd_dma_pointer(chip->dma, chip->dma_size);
return bytes_to_frames(substream->runtime, ptr);
}
static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
size_t ptr;
if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
return 0;
ptr = snd_dma_pointer(chip->dma, chip->dma_size);
return bytes_to_frames(substream->runtime, ptr);
}
/*
*/
static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
int tmp;
if (!chip->thinkpad_flag) return;
outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
tmp = inb(AD1848_THINKPAD_CTL_PORT2);
if (on)
/* turn it on */
tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
else
/* turn it off */
tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
outb(tmp, AD1848_THINKPAD_CTL_PORT2);
}
#ifdef CONFIG_PM
static void snd_ad1848_suspend(struct snd_ad1848 *chip)
{
snd_pcm_suspend_all(chip->pcm);
if (chip->thinkpad_flag)
snd_ad1848_thinkpad_twiddle(chip, 0);
}
static void snd_ad1848_resume(struct snd_ad1848 *chip)
{
int i;
if (chip->thinkpad_flag)
snd_ad1848_thinkpad_twiddle(chip, 1);
/* clear any pendings IRQ */
inb(AD1848P(chip, STATUS));
outb(0, AD1848P(chip, STATUS));
mb();
snd_ad1848_mce_down(chip);
for (i = 0; i < 16; i++)
snd_ad1848_out(chip, i, chip->image[i]);
snd_ad1848_mce_up(chip);
snd_ad1848_mce_down(chip);
}
#endif /* CONFIG_PM */
static int snd_ad1848_probe(struct snd_ad1848 * chip)
{
unsigned long flags;
int i, id, rev, ad1847;
unsigned char *ptr;
#if 0
snd_ad1848_debug(chip);
#endif
id = ad1847 = 0;
for (i = 0; i < 1000; i++) {
mb();
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
udelay(500);
else {
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
if (rev == 0x65) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
id = 1;
ad1847 = 1;
break;
}
if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
id = 1;
break;
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
}
if (id != 1)
return -ENODEV; /* no valid device found */
if (chip->hardware == AD1848_HW_DETECT) {
if (ad1847) {
chip->hardware = AD1848_HW_AD1847;
} else {
chip->hardware = AD1848_HW_AD1848;
rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
if (rev & 0x80) {
chip->hardware = AD1848_HW_CS4248;
} else if ((rev & 0x0f) == 0x0a) {
snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
for (i = 0; i < 16; ++i) {
if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
chip->hardware = AD1848_HW_CMI8330;
break;
}
}
snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
}
}
}
spin_lock_irqsave(&chip->reg_lock, flags);
inb(AD1848P(chip, STATUS)); /* clear any pendings IRQ */
outb(0, AD1848P(chip, STATUS));
mb();
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->image[AD1848_MISC_INFO] = 0x00;
chip->image[AD1848_IFACE_CTRL] =
(chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
ptr = (unsigned char *) &chip->image;
snd_ad1848_mce_down(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
for (i = 0; i < 16; i++) /* ok.. fill all AD1848 registers */
snd_ad1848_out(chip, i, *ptr++);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_up(chip);
snd_ad1848_mce_down(chip);
return 0; /* all things are ok.. */
}
/*
*/
static struct snd_pcm_hardware snd_ad1848_playback =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (128*1024),
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static struct snd_pcm_hardware snd_ad1848_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (128*1024),
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
/*
*/
static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
return err;
chip->playback_substream = substream;
runtime->hw = snd_ad1848_playback;
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
return 0;
}
static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
return err;
chip->capture_substream = substream;
runtime->hw = snd_ad1848_capture;
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
return 0;
}
static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
chip->mode &= ~AD1848_MODE_PLAY;
chip->playback_substream = NULL;
snd_ad1848_close(chip);
return 0;
}
static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
chip->mode &= ~AD1848_MODE_CAPTURE;
chip->capture_substream = NULL;
snd_ad1848_close(chip);
return 0;
}
static int snd_ad1848_free(struct snd_ad1848 *chip)
{
release_and_free_resource(chip->res_port);
if (chip->irq >= 0)
free_irq(chip->irq, (void *) chip);
if (chip->dma >= 0) {
snd_dma_disable(chip->dma);
free_dma(chip->dma);
}
kfree(chip);
return 0;
}
static int snd_ad1848_dev_free(struct snd_device *device)
{
struct snd_ad1848 *chip = device->device_data;
return snd_ad1848_free(chip);
}
static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
{
switch (chip->hardware) {
case AD1848_HW_AD1847: return "AD1847";
case AD1848_HW_AD1848: return "AD1848";
case AD1848_HW_CS4248: return "CS4248";
case AD1848_HW_CMI8330: return "CMI8330/C3D";
default: return "???";
}
}
int snd_ad1848_create(struct snd_card *card,
unsigned long port,
int irq, int dma,
unsigned short hardware,
struct snd_ad1848 ** rchip)
{
static struct snd_device_ops ops = {
.dev_free = snd_ad1848_dev_free,
};
struct snd_ad1848 *chip;
int err;
*rchip = NULL;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->reg_lock);
mutex_init(&chip->open_mutex);
chip->card = card;
chip->port = port;
chip->irq = -1;
chip->dma = -1;
chip->hardware = hardware;
memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
snd_ad1848_free(chip);
return -EBUSY;
}
if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
snd_ad1848_free(chip);
return -EBUSY;
}
chip->irq = irq;
if (request_dma(dma, "AD1848")) {
snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
snd_ad1848_free(chip);
return -EBUSY;
}
chip->dma = dma;
if (hardware == AD1848_HW_THINKPAD) {
chip->thinkpad_flag = 1;
chip->hardware = AD1848_HW_DETECT; /* reset */
snd_ad1848_thinkpad_twiddle(chip, 1);
}
if (snd_ad1848_probe(chip) < 0) {
snd_ad1848_free(chip);
return -ENODEV;
}
/* Register device */
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_ad1848_free(chip);
return err;
}
#ifdef CONFIG_PM
chip->suspend = snd_ad1848_suspend;
chip->resume = snd_ad1848_resume;
#endif
*rchip = chip;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_create);
static struct snd_pcm_ops snd_ad1848_playback_ops = {
.open = snd_ad1848_playback_open,
.close = snd_ad1848_playback_close,
.ioctl = snd_ad1848_ioctl,
.hw_params = snd_ad1848_playback_hw_params,
.hw_free = snd_ad1848_playback_hw_free,
.prepare = snd_ad1848_playback_prepare,
.trigger = snd_ad1848_playback_trigger,
.pointer = snd_ad1848_playback_pointer,
};
static struct snd_pcm_ops snd_ad1848_capture_ops = {
.open = snd_ad1848_capture_open,
.close = snd_ad1848_capture_close,
.ioctl = snd_ad1848_ioctl,
.hw_params = snd_ad1848_capture_hw_params,
.hw_free = snd_ad1848_capture_hw_free,
.prepare = snd_ad1848_capture_prepare,
.trigger = snd_ad1848_capture_trigger,
.pointer = snd_ad1848_capture_pointer,
};
int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
{
struct snd_pcm *pcm;
int err;
if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
pcm->private_data = chip;
pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
strcpy(pcm->name, snd_ad1848_chip_id(chip));
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_isa_data(),
64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
chip->pcm = pcm;
if (rpcm)
*rpcm = pcm;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_pcm);
const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
{
return direction == SNDRV_PCM_STREAM_PLAYBACK ?
&snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
}
EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
/*
* MIXER part
*/
static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
static char *texts[4] = {
"Line", "Aux", "Mic", "Mix"
};
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 2;
uinfo->value.enumerated.items = 4;
if (uinfo->value.enumerated.item > 3)
uinfo->value.enumerated.item = 3;
strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
return 0;
}
static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
unsigned short left, right;
int change;
if (ucontrol->value.enumerated.item[0] > 3 ||
ucontrol->value.enumerated.item[1] > 3)
return -EINVAL;
left = ucontrol->value.enumerated.item[0] << 6;
right = ucontrol->value.enumerated.item[1] << 6;
spin_lock_irqsave(&chip->reg_lock, flags);
left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
change = left != chip->image[AD1848_LEFT_INPUT] ||
right != chip->image[AD1848_RIGHT_INPUT];
snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 16) & 0xff;
uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (invert)
ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
return 0;
}
static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
int change;
unsigned short val;
val = (ucontrol->value.integer.value[0] & mask);
if (invert)
val = mask - val;
val <<= shift;
spin_lock_irqsave(&chip->reg_lock, flags);
val = (chip->image[reg] & ~(mask << shift)) | val;
change = val != chip->image[reg];
snd_ad1848_out(chip, reg, val);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 24) & 0xff;
uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (invert) {
ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
}
return 0;
}
static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
int change;
unsigned short val1, val2;
val1 = ucontrol->value.integer.value[0] & mask;
val2 = ucontrol->value.integer.value[1] & mask;
if (invert) {
val1 = mask - val1;
val2 = mask - val2;
}
val1 <<= shift_left;
val2 <<= shift_right;
spin_lock_irqsave(&chip->reg_lock, flags);
if (left_reg != right_reg) {
val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
snd_ad1848_out(chip, left_reg, val1);
snd_ad1848_out(chip, right_reg, val2);
} else {
val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
change = val1 != chip->image[left_reg];
snd_ad1848_out(chip, left_reg, val1);
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
/*
*/
int snd_ad1848_add_ctl_elem(struct snd_ad1848 *chip,
const struct ad1848_mix_elem *c)
{
static struct snd_kcontrol_new newctls[] = {
[AD1848_MIX_SINGLE] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_ad1848_info_single,
.get = snd_ad1848_get_single,
.put = snd_ad1848_put_single,
},
[AD1848_MIX_DOUBLE] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_ad1848_info_double,
.get = snd_ad1848_get_double,
.put = snd_ad1848_put_double,
},
[AD1848_MIX_CAPTURE] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_ad1848_info_mux,
.get = snd_ad1848_get_mux,
.put = snd_ad1848_put_mux,
},
};
struct snd_kcontrol *ctl;
int err;
ctl = snd_ctl_new1(&newctls[c->type], chip);
if (! ctl)
return -ENOMEM;
strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
ctl->id.index = c->index;
ctl->private_value = c->private_value;
if (c->tlv) {
ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
ctl->tlv.p = c->tlv;
}
if ((err = snd_ctl_add(chip->card, ctl)) < 0)
return err;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
static DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
static DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
static DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
static struct ad1848_mix_elem snd_ad1848_controls[] = {
AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
db_scale_6bit),
AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
db_scale_5bit_12db_max),
AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
db_scale_5bit_12db_max),
AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
db_scale_rec_gain),
{
.name = "Capture Source",
.type = AD1848_MIX_CAPTURE,
},
AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
db_scale_6bit),
};
int snd_ad1848_mixer(struct snd_ad1848 *chip)
{
struct snd_card *card;
struct snd_pcm *pcm;
unsigned int idx;
int err;
snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
pcm = chip->pcm;
card = chip->card;
strcpy(card->mixername, pcm->name);
for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
return err;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_mixer);
/*
* INIT part
*/
static int __init alsa_ad1848_init(void)
{
return 0;
}
static void __exit alsa_ad1848_exit(void)
{
}
module_init(alsa_ad1848_init)
module_exit(alsa_ad1848_exit)
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