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path: root/drivers/staging/cx25821/cx25821-alsa.c
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Diffstat (limited to 'drivers/staging/cx25821/cx25821-alsa.c')
-rw-r--r--drivers/staging/cx25821/cx25821-alsa.c103
1 files changed, 55 insertions, 48 deletions
diff --git a/drivers/staging/cx25821/cx25821-alsa.c b/drivers/staging/cx25821/cx25821-alsa.c
index 061add30ba8a..1798975a69bd 100644
--- a/drivers/staging/cx25821/cx25821-alsa.c
+++ b/drivers/staging/cx25821/cx25821-alsa.c
@@ -29,7 +29,7 @@
#include <linux/pci.h>
#include <linux/slab.h>
-#include <asm/delay.h>
+#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -42,10 +42,10 @@
#define AUDIO_SRAM_CHANNEL SRAM_CH08
-#define dprintk(level,fmt, arg...) if (debug >= level) \
+#define dprintk(level, fmt, arg...) if (debug >= level) \
printk(KERN_INFO "%s/1: " fmt, chip->dev->name , ## arg)
-#define dprintk_core(level,fmt, arg...) if (debug >= level) \
+#define dprintk_core(level, fmt, arg...) if (debug >= level) \
printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name , ## arg)
/****************************************************************************
@@ -81,7 +81,6 @@ struct cx25821_audio_dev {
struct snd_pcm_substream *substream;
};
-typedef struct cx25821_audio_dev snd_cx25821_card_t;
/****************************************************************************
@@ -90,7 +89,7 @@ typedef struct cx25821_audio_dev snd_cx25821_card_t;
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
-static int enable[SNDRV_CARDS] = { 1,[1 ... (SNDRV_CARDS - 1)] = 1 };
+static int enable[SNDRV_CARDS] = { 1, [1 ... (SNDRV_CARDS - 1)] = 1 };
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable cx25821 soundcard. default enabled.");
@@ -105,7 +104,7 @@ MODULE_PARM_DESC(index, "Index value for cx25821 capture interface(s).");
MODULE_DESCRIPTION("ALSA driver module for cx25821 based capture cards");
MODULE_AUTHOR("Hiep Huynh");
MODULE_LICENSE("GPL");
-MODULE_SUPPORTED_DEVICE("{{Conexant,25821}"); //"{{Conexant,23881},"
+MODULE_SUPPORTED_DEVICE("{{Conexant,25821}"); /* "{{Conexant,23881}," */
static unsigned int debug;
module_param(debug, int, 0644);
@@ -135,7 +134,7 @@ MODULE_PARM_DESC(debug, "enable debug messages");
* BOARD Specific: Sets audio DMA
*/
-static int _cx25821_start_audio_dma(snd_cx25821_card_t * chip)
+static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip)
{
struct cx25821_buffer *buf = chip->buf;
struct cx25821_dev *dev = chip->dev;
@@ -143,7 +142,7 @@ static int _cx25821_start_audio_dma(snd_cx25821_card_t * chip)
&cx25821_sram_channels[AUDIO_SRAM_CHANNEL];
u32 tmp = 0;
- // enable output on the GPIO 0 for the MCLK ADC (Audio)
+ /* enable output on the GPIO 0 for the MCLK ADC (Audio) */
cx25821_set_gpiopin_direction(chip->dev, 0, 0);
/* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
@@ -158,18 +157,23 @@ static int _cx25821_start_audio_dma(snd_cx25821_card_t * chip)
cx_write(AUD_A_LNGTH, buf->bpl);
/* reset counter */
- cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); //GP_COUNT_CONTROL_RESET = 0x3
+ /* GP_COUNT_CONTROL_RESET = 0x3 */
+ cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET);
atomic_set(&chip->count, 0);
- //Set the input mode to 16-bit
+ /* Set the input mode to 16-bit */
tmp = cx_read(AUD_A_CFG);
cx_write(AUD_A_CFG,
tmp | FLD_AUD_DST_PK_MODE | FLD_AUD_DST_ENABLE |
FLD_AUD_CLK_ENABLE);
- //printk(KERN_INFO "DEBUG: Start audio DMA, %d B/line, cmds_start(0x%x)= %d lines/FIFO, %d periods, %d "
- // "byte buffer\n", buf->bpl, audio_ch->cmds_start, cx_read(audio_ch->cmds_start + 12)>>1,
- // chip->num_periods, buf->bpl * chip->num_periods);
+ /* printk(KERN_INFO "DEBUG: Start audio DMA, %d B/line,"
+ "cmds_start(0x%x)= %d lines/FIFO, %d periods, "
+ "%d byte buffer\n", buf->bpl,
+ audio_ch->cmds_start,
+ cx_read(audio_ch->cmds_start + 12)>>1,
+ chip->num_periods, buf->bpl *chip->num_periods);
+ */
/* Enables corresponding bits at AUD_INT_STAT */
cx_write(AUD_A_INT_MSK,
@@ -182,7 +186,7 @@ static int _cx25821_start_audio_dma(snd_cx25821_card_t * chip)
/* enable audio irqs */
cx_set(PCI_INT_MSK, chip->dev->pci_irqmask | PCI_MSK_AUD_INT);
- // Turn on audio downstream fifo and risc enable 0x101
+ /* Turn on audio downstream fifo and risc enable 0x101 */
tmp = cx_read(AUD_INT_DMA_CTL);
cx_set(AUD_INT_DMA_CTL,
tmp | (FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN));
@@ -194,7 +198,7 @@ static int _cx25821_start_audio_dma(snd_cx25821_card_t * chip)
/*
* BOARD Specific: Resets audio DMA
*/
-static int _cx25821_stop_audio_dma(snd_cx25821_card_t * chip)
+static int _cx25821_stop_audio_dma(struct cx25821_audio_dev *chip)
{
struct cx25821_dev *dev = chip->dev;
@@ -232,13 +236,13 @@ static char *cx25821_aud_irqs[32] = {
/*
* BOARD Specific: Threats IRQ audio specific calls
*/
-static void cx25821_aud_irq(snd_cx25821_card_t * chip, u32 status, u32 mask)
+static void cx25821_aud_irq(struct cx25821_audio_dev *chip, u32 status,
+ u32 mask)
{
struct cx25821_dev *dev = chip->dev;
- if (0 == (status & mask)) {
+ if (0 == (status & mask))
return;
- }
cx_write(AUD_A_INT_STAT, status);
if (debug > 1 || (status & mask & ~0xff))
@@ -277,7 +281,7 @@ static void cx25821_aud_irq(snd_cx25821_card_t * chip, u32 status, u32 mask)
*/
static irqreturn_t cx25821_irq(int irq, void *dev_id)
{
- snd_cx25821_card_t *chip = dev_id;
+ struct cx25821_audio_dev *chip = dev_id;
struct cx25821_dev *dev = chip->dev;
u32 status, pci_status;
u32 audint_status, audint_mask;
@@ -318,11 +322,11 @@ static irqreturn_t cx25821_irq(int irq, void *dev_id)
if (handled)
cx_write(PCI_INT_STAT, pci_status);
- out:
+out:
return IRQ_RETVAL(handled);
}
-static int dsp_buffer_free(snd_cx25821_card_t * chip)
+static int dsp_buffer_free(struct cx25821_audio_dev *chip)
{
BUG_ON(!chip->dma_size);
@@ -363,7 +367,8 @@ static struct snd_pcm_hardware snd_cx25821_digital_hw = {
.period_bytes_max = DEFAULT_FIFO_SIZE / 3,
.periods_min = 1,
.periods_max = AUDIO_LINE_SIZE,
- .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE), //128*128 = 16384 = 1024 * 16
+ /* 128 * 128 = 16384 = 1024 * 16 */
+ .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE),
};
/*
@@ -371,7 +376,7 @@ static struct snd_pcm_hardware snd_cx25821_digital_hw = {
*/
static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream)
{
- snd_cx25821_card_t *chip = snd_pcm_substream_chip(substream);
+ struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
unsigned int bpl = 0;
@@ -393,18 +398,19 @@ static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream)
if (cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size !=
DEFAULT_FIFO_SIZE) {
- bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3; //since there are 3 audio Clusters
+ /* since there are 3 audio Clusters */
+ bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3;
bpl &= ~7; /* must be multiple of 8 */
- if (bpl > AUDIO_LINE_SIZE) {
+ if (bpl > AUDIO_LINE_SIZE)
bpl = AUDIO_LINE_SIZE;
- }
+
runtime->hw.period_bytes_min = bpl;
runtime->hw.period_bytes_max = bpl;
}
return 0;
- _error:
+_error:
dprintk(1, "Error opening PCM!\n");
return err;
}
@@ -423,7 +429,7 @@ static int snd_cx25821_close(struct snd_pcm_substream *substream)
static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
- snd_cx25821_card_t *chip = snd_pcm_substream_chip(substream);
+ struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
struct videobuf_dmabuf *dma;
struct cx25821_buffer *buf;
@@ -445,9 +451,8 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
if (NULL == buf)
return -ENOMEM;
- if (chip->period_size > AUDIO_LINE_SIZE) {
+ if (chip->period_size > AUDIO_LINE_SIZE)
chip->period_size = AUDIO_LINE_SIZE;
- }
buf->vb.memory = V4L2_MEMORY_MMAP;
buf->vb.field = V4L2_FIELD_NONE;
@@ -474,7 +479,7 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
buf->vb.width, buf->vb.height, 1);
if (ret < 0) {
printk(KERN_INFO
- "DEBUG: ERROR after cx25821_risc_databuffer_audio() \n");
+ "DEBUG: ERROR after cx25821_risc_databuffer_audio()\n");
goto error;
}
@@ -494,7 +499,7 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
return 0;
- error:
+error:
kfree(buf);
return ret;
}
@@ -504,7 +509,7 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
*/
static int snd_cx25821_hw_free(struct snd_pcm_substream *substream)
{
- snd_cx25821_card_t *chip = snd_pcm_substream_chip(substream);
+ struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
if (substream->runtime->dma_area) {
dsp_buffer_free(chip);
@@ -528,7 +533,7 @@ static int snd_cx25821_prepare(struct snd_pcm_substream *substream)
static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream,
int cmd)
{
- snd_cx25821_card_t *chip = snd_pcm_substream_chip(substream);
+ struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
int err = 0;
/* Local interrupts are already disabled by ALSA */
@@ -557,7 +562,7 @@ static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream,
static snd_pcm_uframes_t snd_cx25821_pointer(struct snd_pcm_substream
*substream)
{
- snd_cx25821_card_t *chip = snd_pcm_substream_chip(substream);
+ struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
u16 count;
@@ -593,10 +598,11 @@ static struct snd_pcm_ops snd_cx25821_pcm_ops = {
};
/*
- * ALSA create a PCM device: Called when initializing the board. Sets up the name and hooks up
- * the callbacks
+ * ALSA create a PCM device: Called when initializing the board.
+ * Sets up the name and hooks up the callbacks
*/
-static int snd_cx25821_pcm(snd_cx25821_card_t * chip, int device, char *name)
+static int snd_cx25821_pcm(struct cx25821_audio_dev *chip, int device,
+ char *name)
{
struct snd_pcm *pcm;
int err;
@@ -636,7 +642,7 @@ MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl);
* from the file.
*/
/*
-static int snd_cx25821_free(snd_cx25821_card_t *chip)
+static int snd_cx25821_free(struct cx25821_audio_dev *chip)
{
if (chip->irq >= 0)
free_irq(chip->irq, chip);
@@ -653,9 +659,9 @@ static int snd_cx25821_free(snd_cx25821_card_t *chip)
*/
static void snd_cx25821_dev_free(struct snd_card *card)
{
- snd_cx25821_card_t *chip = card->private_data;
+ struct cx25821_audio_dev *chip = card->private_data;
- //snd_cx25821_free(chip);
+ /* snd_cx25821_free(chip); */
snd_card_free(chip->card);
}
@@ -665,23 +671,23 @@ static void snd_cx25821_dev_free(struct snd_card *card)
static int cx25821_audio_initdev(struct cx25821_dev *dev)
{
struct snd_card *card;
- snd_cx25821_card_t *chip;
+ struct cx25821_audio_dev *chip;
int err;
if (devno >= SNDRV_CARDS) {
printk(KERN_INFO "DEBUG ERROR: devno >= SNDRV_CARDS %s\n",
__func__);
- return (-ENODEV);
+ return -ENODEV;
}
if (!enable[devno]) {
++devno;
printk(KERN_INFO "DEBUG ERROR: !enable[devno] %s\n", __func__);
- return (-ENOENT);
+ return -ENOENT;
}
err = snd_card_create(index[devno], id[devno], THIS_MODULE,
- sizeof(snd_cx25821_card_t), &card);
+ sizeof(struct cx25821_audio_dev), &card);
if (err < 0) {
printk(KERN_INFO
"DEBUG ERROR: cannot create snd_card_new in %s\n",
@@ -693,7 +699,7 @@ static int cx25821_audio_initdev(struct cx25821_dev *dev)
/* Card "creation" */
card->private_free = snd_cx25821_dev_free;
- chip = (snd_cx25821_card_t *) card->private_data;
+ chip = (struct cx25821_audio_dev *) card->private_data;
spin_lock_init(&chip->reg_lock);
chip->dev = dev;
@@ -712,7 +718,8 @@ static int cx25821_audio_initdev(struct cx25821_dev *dev)
goto error;
}
- if ((err = snd_cx25821_pcm(chip, 0, "cx25821 Digital")) < 0) {
+ err = snd_cx25821_pcm(chip, 0, "cx25821 Digital");
+ if (err < 0) {
printk(KERN_INFO
"DEBUG ERROR: cannot create snd_cx25821_pcm %s\n",
__func__);
@@ -741,7 +748,7 @@ static int cx25821_audio_initdev(struct cx25821_dev *dev)
devno++;
return 0;
- error:
+error:
snd_card_free(card);
return err;
}
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