[ALSA] dbri: more cleanups
This patch: - removes redundant constant suffices - removes redundant parentheses - removes redundant curly brackets - removes check if a spinlock is locked inside method which is only called with the spinlock locked - moves few functions to the __init section - removes line which appears twice after the previous patch - minor comments improvements Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Krzysztof Helt
Jaroslav Kysela
parent
c6c2d57b8c
commit
cf68d212d5
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@ -233,12 +233,12 @@ static struct {
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****************************************************************************/
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/* DBRI main registers */
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#define REG0 0x00UL /* Status and Control */
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#define REG1 0x04UL /* Mode and Interrupt */
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#define REG2 0x08UL /* Parallel IO */
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#define REG3 0x0cUL /* Test */
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#define REG8 0x20UL /* Command Queue Pointer */
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#define REG9 0x24UL /* Interrupt Queue Pointer */
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#define REG0 0x00 /* Status and Control */
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#define REG1 0x04 /* Mode and Interrupt */
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#define REG2 0x08 /* Parallel IO */
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#define REG3 0x0c /* Test */
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#define REG8 0x20 /* Command Queue Pointer */
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#define REG9 0x24 /* Interrupt Queue Pointer */
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#define DBRI_NO_CMDS 64
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#define DBRI_INT_BLK 64
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@ -565,7 +565,7 @@ struct snd_dbri {
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/* Translate the ALSA direction into the array index */
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#define DBRI_STREAMNO(substream) \
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(substream->stream == \
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SNDRV_PCM_STREAM_PLAYBACK? DBRI_PLAY: DBRI_REC)
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SNDRV_PCM_STREAM_PLAYBACK ? DBRI_PLAY: DBRI_REC)
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/* Return a pointer to dbri_streaminfo */
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#define DBRI_STREAM(dbri, substream) \
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@ -611,8 +611,8 @@ The list is terminated with a WAIT command, which generates a
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CPU interrupt to signal completion.
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Since the DBRI can run in parallel with the CPU, several means of
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synchronization present themselves. The method implemented here is only
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use of the dbri_cmdwait() to wait for execution of batch of sent commands.
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synchronization present themselves. The method implemented here uses
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the dbri_cmdwait() to wait for execution of batch of sent commands.
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A circular command buffer is used here. A new command is being added
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while another can be executed. The scheme works by adding two WAIT commands
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@ -648,15 +648,14 @@ static void dbri_cmdwait(struct snd_dbri *dbri)
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}
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spin_unlock_irqrestore(&dbri->lock, flags);
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if (maxloops == 0) {
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if (maxloops == 0)
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printk(KERN_ERR "DBRI: Chip never completed command buffer\n");
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} else {
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else
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dprintk(D_CMD, "Chip completed command buffer (%d)\n",
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MAXLOOPS - maxloops - 1);
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}
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}
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/*
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* Lock the command queue and returns pointer to a space for len cmd words
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* Lock the command queue and return pointer to space for len cmd words
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* It locks the cmdlock spinlock.
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*/
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static s32 *dbri_cmdlock(struct snd_dbri *dbri, int len)
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@ -749,7 +748,7 @@ static void dbri_reset(struct snd_dbri *dbri)
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}
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/* Lock must not be held before calling this */
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static void dbri_initialize(struct snd_dbri *dbri)
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static void __init dbri_initialize(struct snd_dbri *dbri)
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{
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s32 *cmd;
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u32 dma_addr;
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@ -804,7 +803,7 @@ list ordering, among other things. The transmit and receive functions
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here interface closely with the transmit and receive interrupt code.
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*/
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static int pipe_active(struct snd_dbri *dbri, int pipe)
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static inline int pipe_active(struct snd_dbri *dbri, int pipe)
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{
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return ((pipe >= 0) && (dbri->pipes[pipe].desc != -1));
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}
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@ -1148,6 +1147,7 @@ static int setup_descs(struct snd_dbri *dbri, int streamno, unsigned int period)
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if (!dbri->dma->desc[desc].ba)
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break;
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}
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if (desc == DBRI_NO_DESCS) {
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printk(KERN_ERR "DBRI: setup_descs: No descriptors\n");
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return -1;
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@ -1308,7 +1308,7 @@ to the DBRI via the CHI interface and few of the DBRI's PIO pins.
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* Lock must not be held before calling it.
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*/
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static void cs4215_setup_pipes(struct snd_dbri *dbri)
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static __init void cs4215_setup_pipes(struct snd_dbri *dbri)
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{
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unsigned long flags;
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@ -1341,7 +1341,7 @@ static void cs4215_setup_pipes(struct snd_dbri *dbri)
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dbri_cmdwait(dbri);
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}
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static int cs4215_init_data(struct cs4215 *mm)
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static __init int cs4215_init_data(struct cs4215 *mm)
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{
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/*
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* No action, memory resetting only.
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@ -1633,7 +1633,7 @@ static int cs4215_prepare(struct snd_dbri *dbri, unsigned int rate,
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/*
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*
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*/
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static int cs4215_init(struct snd_dbri *dbri)
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static __init int cs4215_init(struct snd_dbri *dbri)
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{
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u32 reg2 = sbus_readl(dbri->regs + REG2);
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dprintk(D_MM, "cs4215_init: reg2=0x%x\n", reg2);
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@ -1771,13 +1771,10 @@ static void xmit_descs(struct snd_dbri *dbri)
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static void transmission_complete_intr(struct snd_dbri *dbri, int pipe)
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{
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struct dbri_streaminfo *info;
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int td;
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struct dbri_streaminfo *info = &dbri->stream_info[DBRI_PLAY];
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int td = dbri->pipes[pipe].desc;
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int status;
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info = &dbri->stream_info[DBRI_PLAY];
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td = dbri->pipes[pipe].desc;
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while (td >= 0) {
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if (td >= DBRI_NO_DESCS) {
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printk(KERN_ERR "DBRI: invalid td on pipe %d\n", pipe);
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@ -1798,12 +1795,9 @@ static void transmission_complete_intr(struct snd_dbri *dbri, int pipe)
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}
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/* Notify ALSA */
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if (spin_is_locked(&dbri->lock)) {
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spin_unlock(&dbri->lock);
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snd_pcm_period_elapsed(info->substream);
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spin_lock(&dbri->lock);
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} else
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snd_pcm_period_elapsed(info->substream);
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}
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static void reception_complete_intr(struct snd_dbri *dbri, int pipe)
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@ -1830,12 +1824,9 @@ static void reception_complete_intr(struct snd_dbri *dbri, int pipe)
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rd, DBRI_RD_STATUS(status), DBRI_RD_CNT(status));
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/* Notify ALSA */
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if (spin_is_locked(&dbri->lock)) {
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spin_unlock(&dbri->lock);
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snd_pcm_period_elapsed(info->substream);
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spin_lock(&dbri->lock);
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} else
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snd_pcm_period_elapsed(info->substream);
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}
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static void dbri_process_one_interrupt(struct snd_dbri *dbri, int x)
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@ -1986,10 +1977,10 @@ static irqreturn_t snd_dbri_interrupt(int irq, void *dev_id)
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PCM Interface
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****************************************************************************/
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static struct snd_pcm_hardware snd_dbri_pcm_hw = {
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.info = (SNDRV_PCM_INFO_MMAP |
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID),
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SNDRV_PCM_INFO_MMAP_VALID,
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.formats = SNDRV_PCM_FMTBIT_MU_LAW |
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SNDRV_PCM_FMTBIT_A_LAW |
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SNDRV_PCM_FMTBIT_U8 |
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@ -1999,7 +1990,7 @@ static struct snd_pcm_hardware snd_dbri_pcm_hw = {
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.rate_max = 48000,
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = (64 * 1024),
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.buffer_bytes_max = 64 * 1024,
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.period_bytes_min = 1,
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.period_bytes_max = DBRI_TD_MAXCNT,
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.periods_min = 1,
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@ -2266,11 +2257,10 @@ static int snd_cs4215_info_volume(struct snd_kcontrol *kcontrol,
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 2;
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uinfo->value.integer.min = 0;
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if (kcontrol->private_value == DBRI_PLAY) {
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if (kcontrol->private_value == DBRI_PLAY)
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uinfo->value.integer.max = DBRI_MAX_VOLUME;
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} else {
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else
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uinfo->value.integer.max = DBRI_MAX_GAIN;
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}
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return 0;
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}
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@ -2304,7 +2294,7 @@ static int snd_cs4215_put_volume(struct snd_kcontrol *kcontrol,
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info->right_gain = ucontrol->value.integer.value[1];
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changed = 1;
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}
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if (changed == 1) {
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if (changed) {
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/* First mute outputs, and wait 1/8000 sec (125 us)
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* to make sure this takes. This avoids clicking noises.
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*/
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@ -2443,8 +2433,9 @@ static int __init snd_dbri_mixer(struct snd_dbri *dbri)
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strcpy(card->mixername, card->shortname);
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for (idx = 0; idx < ARRAY_SIZE(dbri_controls); idx++) {
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if ((err = snd_ctl_add(card,
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snd_ctl_new1(&dbri_controls[idx], dbri))) < 0)
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err = snd_ctl_add(card,
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snd_ctl_new1(&dbri_controls[idx], dbri));
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if (err < 0)
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return err;
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}
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@ -2485,8 +2476,8 @@ static void dbri_debug_read(struct snd_info_entry *entry,
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"Pipe %d: %s SDP=0x%x desc=%d, "
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"len=%d next %d\n",
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pipe,
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((pptr->sdp & D_SDP_TO_SER) ? "output" :
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"input"),
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(pptr->sdp & D_SDP_TO_SER) ? "output" :
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"input",
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pptr->sdp, pptr->desc,
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pptr->length, pptr->nextpipe);
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}
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@ -2502,7 +2493,7 @@ void snd_dbri_proc(struct snd_dbri *dbri)
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snd_info_set_text_ops(entry, dbri, dbri_regs_read);
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#ifdef DBRI_DEBUG
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if (! snd_card_proc_new(dbri->card, "debug", &entry)) {
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if (!snd_card_proc_new(dbri->card, "debug", &entry)) {
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snd_info_set_text_ops(entry, dbri, dbri_debug_read);
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entry->mode = S_IFREG | S_IRUGO; /* Readable only. */
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}
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@ -2633,11 +2624,12 @@ static int __init dbri_attach(int prom_node, struct sbus_dev *sdev)
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}
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dbri = card->private_data;
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if ((err = snd_dbri_pcm(dbri)) < 0)
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err = snd_dbri_pcm(dbri);
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if (err < 0)
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goto _err;
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if ((err = snd_dbri_mixer(dbri)) < 0)
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if ((err = snd_dbri_mixer(dbri)) < 0)
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err = snd_dbri_mixer(dbri);
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if (err < 0)
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goto _err;
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/* /proc file handling */
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