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linux/sound/pci/cs5535audio/cs5535audio_pcm.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

455 lines
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/*
* Driver for audio on multifunction CS5535 companion device
* Copyright (C) Jaya Kumar
*
* Based on Jaroslav Kysela and Takashi Iwai's examples.
* This work was sponsored by CIS(M) Sdn Bhd.
*
* 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
*
* todo: add be fmt support, spdif, pm
*/
#include <linux/init.h>
#include <linux/pci.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/initval.h>
#include <sound/asoundef.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/ac97_codec.h>
#include "cs5535audio.h"
static struct snd_pcm_hardware snd_cs5535audio_playback =
{
.info = (
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME
),
.formats = (
SNDRV_PCM_FMTBIT_S16_LE
),
.rates = (
SNDRV_PCM_RATE_CONTINUOUS |
SNDRV_PCM_RATE_8000_48000
),
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (64*1024 - 16),
.periods_min = 1,
.periods_max = CS5535AUDIO_MAX_DESCRIPTORS,
.fifo_size = 0,
};
static struct snd_pcm_hardware snd_cs5535audio_capture =
{
.info = (
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID
),
.formats = (
SNDRV_PCM_FMTBIT_S16_LE
),
.rates = (
SNDRV_PCM_RATE_CONTINUOUS |
SNDRV_PCM_RATE_8000_48000
),
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (64*1024 - 16),
.periods_min = 1,
.periods_max = CS5535AUDIO_MAX_DESCRIPTORS,
.fifo_size = 0,
};
static int snd_cs5535audio_playback_open(struct snd_pcm_substream *substream)
{
int err;
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
runtime->hw = snd_cs5535audio_playback;
runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_FRONT_DAC];
snd_pcm_limit_hw_rates(runtime);
cs5535au->playback_substream = substream;
runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]);
if ((err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
return 0;
}
static int snd_cs5535audio_playback_close(struct snd_pcm_substream *substream)
{
return 0;
}
#define CS5535AUDIO_DESC_LIST_SIZE \
PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(struct cs5535audio_dma_desc))
static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au,
struct cs5535audio_dma *dma,
struct snd_pcm_substream *substream,
unsigned int periods,
unsigned int period_bytes)
{
unsigned int i;
u32 addr, desc_addr, jmpprd_addr;
struct cs5535audio_dma_desc *lastdesc;
if (periods > CS5535AUDIO_MAX_DESCRIPTORS)
return -ENOMEM;
if (dma->desc_buf.area == NULL) {
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(cs5535au->pci),
CS5535AUDIO_DESC_LIST_SIZE+1,
&dma->desc_buf) < 0)
return -ENOMEM;
dma->period_bytes = dma->periods = 0;
}
if (dma->periods == periods && dma->period_bytes == period_bytes)
return 0;
/* the u32 cast is okay because in snd*create we successfully told
pci alloc that we're only 32 bit capable so the uppper will be 0 */
addr = (u32) substream->runtime->dma_addr;
desc_addr = (u32) dma->desc_buf.addr;
for (i = 0; i < periods; i++) {
struct cs5535audio_dma_desc *desc =
&((struct cs5535audio_dma_desc *) dma->desc_buf.area)[i];
desc->addr = cpu_to_le32(addr);
desc->size = cpu_to_le32(period_bytes);
desc->ctlreserved = cpu_to_le32(PRD_EOP);
desc_addr += sizeof(struct cs5535audio_dma_desc);
addr += period_bytes;
}
/* we reserved one dummy descriptor at the end to do the PRD jump */
lastdesc = &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[periods];
lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
lastdesc->size = 0;
lastdesc->ctlreserved = cpu_to_le32(PRD_JMP);
jmpprd_addr = cpu_to_le32(lastdesc->addr +
(sizeof(struct cs5535audio_dma_desc)*periods));
dma->substream = substream;
dma->period_bytes = period_bytes;
dma->periods = periods;
spin_lock_irq(&cs5535au->reg_lock);
dma->ops->disable_dma(cs5535au);
dma->ops->setup_prd(cs5535au, jmpprd_addr);
spin_unlock_irq(&cs5535au->reg_lock);
return 0;
}
static void cs5535audio_playback_enable_dma(struct cs5535audio *cs5535au)
{
cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN);
}
static void cs5535audio_playback_disable_dma(struct cs5535audio *cs5535au)
{
cs_writeb(cs5535au, ACC_BM0_CMD, 0);
}
static void cs5535audio_playback_pause_dma(struct cs5535audio *cs5535au)
{
cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE);
}
static void cs5535audio_playback_setup_prd(struct cs5535audio *cs5535au,
u32 prd_addr)
{
cs_writel(cs5535au, ACC_BM0_PRD, prd_addr);
}
static u32 cs5535audio_playback_read_prd(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM0_PRD);
}
static u32 cs5535audio_playback_read_dma_pntr(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM0_PNTR);
}
static void cs5535audio_capture_enable_dma(struct cs5535audio *cs5535au)
{
cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN);
}
static void cs5535audio_capture_disable_dma(struct cs5535audio *cs5535au)
{
cs_writeb(cs5535au, ACC_BM1_CMD, 0);
}
static void cs5535audio_capture_pause_dma(struct cs5535audio *cs5535au)
{
cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE);
}
static void cs5535audio_capture_setup_prd(struct cs5535audio *cs5535au,
u32 prd_addr)
{
cs_writel(cs5535au, ACC_BM1_PRD, prd_addr);
}
static u32 cs5535audio_capture_read_prd(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM1_PRD);
}
static u32 cs5535audio_capture_read_dma_pntr(struct cs5535audio *cs5535au)
{
return cs_readl(cs5535au, ACC_BM1_PNTR);
}
static void cs5535audio_clear_dma_packets(struct cs5535audio *cs5535au,
struct cs5535audio_dma *dma,
struct snd_pcm_substream *substream)
{
snd_dma_free_pages(&dma->desc_buf);
dma->desc_buf.area = NULL;
dma->substream = NULL;
}
static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct cs5535audio_dma *dma = substream->runtime->private_data;
int err;
err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
dma->buf_addr = substream->runtime->dma_addr;
dma->buf_bytes = params_buffer_bytes(hw_params);
err = cs5535audio_build_dma_packets(cs5535au, dma, substream,
params_periods(hw_params),
params_period_bytes(hw_params));
if (!err)
dma->pcm_open_flag = 1;
return err;
}
static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct cs5535audio_dma *dma = substream->runtime->private_data;
if (dma->pcm_open_flag) {
if (substream == cs5535au->playback_substream)
snd_ac97_update_power(cs5535au->ac97,
AC97_PCM_FRONT_DAC_RATE, 0);
else
snd_ac97_update_power(cs5535au->ac97,
AC97_PCM_LR_ADC_RATE, 0);
dma->pcm_open_flag = 0;
}
cs5535audio_clear_dma_packets(cs5535au, dma, substream);
return snd_pcm_lib_free_pages(substream);
}
static int snd_cs5535audio_playback_prepare(struct snd_pcm_substream *substream)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE,
substream->runtime->rate);
}
static int snd_cs5535audio_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct cs5535audio_dma *dma = substream->runtime->private_data;
int err = 0;
spin_lock(&cs5535au->reg_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
dma->ops->pause_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
dma->ops->enable_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_START:
dma->ops->enable_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_RESUME:
dma->ops->enable_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_STOP:
dma->ops->disable_dma(cs5535au);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
dma->ops->disable_dma(cs5535au);
break;
default:
snd_printk(KERN_ERR "unhandled trigger\n");
err = -EINVAL;
break;
}
spin_unlock(&cs5535au->reg_lock);
return err;
}
static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(struct snd_pcm_substream
*substream)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
u32 curdma;
struct cs5535audio_dma *dma;
dma = substream->runtime->private_data;
curdma = dma->ops->read_dma_pntr(cs5535au);
if (curdma < dma->buf_addr) {
snd_printk(KERN_ERR "curdma=%x < %x bufaddr.\n",
curdma, dma->buf_addr);
return 0;
}
curdma -= dma->buf_addr;
if (curdma >= dma->buf_bytes) {
snd_printk(KERN_ERR "diff=%x >= %x buf_bytes.\n",
curdma, dma->buf_bytes);
return 0;
}
return bytes_to_frames(substream->runtime, curdma);
}
static int snd_cs5535audio_capture_open(struct snd_pcm_substream *substream)
{
int err;
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
runtime->hw = snd_cs5535audio_capture;
runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_ADC];
snd_pcm_limit_hw_rates(runtime);
cs5535au->capture_substream = substream;
runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]);
if ((err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
olpc_capture_open(cs5535au->ac97);
return 0;
}
static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
olpc_capture_close(cs5535au->ac97);
return 0;
}
static int snd_cs5535audio_capture_prepare(struct snd_pcm_substream *substream)
{
struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE,
substream->runtime->rate);
}
static struct snd_pcm_ops snd_cs5535audio_playback_ops = {
.open = snd_cs5535audio_playback_open,
.close = snd_cs5535audio_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_cs5535audio_hw_params,
.hw_free = snd_cs5535audio_hw_free,
.prepare = snd_cs5535audio_playback_prepare,
.trigger = snd_cs5535audio_trigger,
.pointer = snd_cs5535audio_pcm_pointer,
};
static struct snd_pcm_ops snd_cs5535audio_capture_ops = {
.open = snd_cs5535audio_capture_open,
.close = snd_cs5535audio_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_cs5535audio_hw_params,
.hw_free = snd_cs5535audio_hw_free,
.prepare = snd_cs5535audio_capture_prepare,
.trigger = snd_cs5535audio_trigger,
.pointer = snd_cs5535audio_pcm_pointer,
};
static struct cs5535audio_dma_ops snd_cs5535audio_playback_dma_ops = {
.type = CS5535AUDIO_DMA_PLAYBACK,
.enable_dma = cs5535audio_playback_enable_dma,
.disable_dma = cs5535audio_playback_disable_dma,
.setup_prd = cs5535audio_playback_setup_prd,
.read_prd = cs5535audio_playback_read_prd,
.pause_dma = cs5535audio_playback_pause_dma,
.read_dma_pntr = cs5535audio_playback_read_dma_pntr,
};
static struct cs5535audio_dma_ops snd_cs5535audio_capture_dma_ops = {
.type = CS5535AUDIO_DMA_CAPTURE,
.enable_dma = cs5535audio_capture_enable_dma,
.disable_dma = cs5535audio_capture_disable_dma,
.setup_prd = cs5535audio_capture_setup_prd,
.read_prd = cs5535audio_capture_read_prd,
.pause_dma = cs5535audio_capture_pause_dma,
.read_dma_pntr = cs5535audio_capture_read_dma_pntr,
};
int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535au)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm);
if (err < 0)
return err;
cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops =
&snd_cs5535audio_playback_dma_ops;
cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops =
&snd_cs5535audio_capture_dma_ops;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_cs5535audio_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_cs5535audio_capture_ops);
pcm->private_data = cs5535au;
pcm->info_flags = 0;
strcpy(pcm->name, "CS5535 Audio");
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(cs5535au->pci),
64*1024, 128*1024);
cs5535au->pcm = pcm;
return 0;
}
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