C++ (Cpp) snd_mpu401_uart_input_read Exemples

Exemple #1

Fichier : mpu401_uart.c Projet : mjduddin/B14CKB1RD_kernel_m8

static void
snd_mpu401_uart_input_trigger(struct snd_rawmidi_substream *substream, int up)
{
	unsigned long flags;
	struct snd_mpu401 *mpu;
	int max = 64;

	mpu = substream->rmidi->private_data;
	if (up) {
		if (! test_and_set_bit(MPU401_MODE_BIT_INPUT_TRIGGER,
				       &mpu->mode)) {
			
			while (max-- > 0)
				mpu->read(mpu, MPU401D(mpu));
			if (mpu->info_flags & MPU401_INFO_USE_TIMER)
				snd_mpu401_uart_add_timer(mpu, 1);
		}
		
		
		spin_lock_irqsave(&mpu->input_lock, flags);
		snd_mpu401_uart_input_read(mpu);
		spin_unlock_irqrestore(&mpu->input_lock, flags);
	} else {
		if (mpu->info_flags & MPU401_INFO_USE_TIMER)
			snd_mpu401_uart_remove_timer(mpu, 1);
		clear_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode);
	}

}

Exemple #2

Fichier : mpu401_uart.c Projet : BackupTheBerlios/tuxap

/*
 * trigger input callback
 */
static void snd_mpu401_uart_input_trigger(snd_rawmidi_substream_t * substream, int up)
{
	unsigned long flags;
	mpu401_t *mpu;
	int max = 64;

	mpu = substream->rmidi->private_data;
	if (up) {
		if (! test_and_set_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode)) {
			/* first time - flush FIFO */
			while (max-- > 0)
				mpu->read(mpu, MPU401D(mpu));
			if (mpu->irq < 0)
				snd_mpu401_uart_add_timer(mpu, 1);
		}
		
		/* read data in advance */
		/* prevent double enter via rawmidi->event callback */
		if (atomic_dec_and_test(&mpu->rx_loop)) {
			local_irq_save(flags);
			if (spin_trylock(&mpu->input_lock)) {
				snd_mpu401_uart_input_read(mpu);
				spin_unlock(&mpu->input_lock);
			}
			local_irq_restore(flags);
		}
		atomic_inc(&mpu->rx_loop);
	} else {
		if (mpu->irq < 0)
			snd_mpu401_uart_remove_timer(mpu, 1);
		clear_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode);
	}
}

Exemple #3

Fichier : mpu401_uart.c Projet : BackupTheBerlios/tew632-brp-svn

/*
 * trigger input callback
 */
static void snd_mpu401_uart_input_trigger(snd_rawmidi_substream_t * substream, int up)
{
	unsigned long flags;
	mpu401_t *mpu;
	int max = 64;

	mpu = substream->rmidi->private_data;
	if (up) {
		if (! test_and_set_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode)) {
			/* first time - flush FIFO */
			while (max-- > 0)
				mpu->read(mpu, MPU401D(mpu));
			if (mpu->irq < 0)
				snd_mpu401_uart_add_timer(mpu, 1);
		}
		
		/* read data in advance */
		spin_lock_irqsave(&mpu->input_lock, flags);
		snd_mpu401_uart_input_read(mpu);
		spin_unlock_irqrestore(&mpu->input_lock, flags);
	} else {
		if (mpu->irq < 0)
			snd_mpu401_uart_remove_timer(mpu, 1);
		clear_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode);
	}
}

Exemple #4

Fichier : mpu401_uart.c Projet : mjduddin/B14CKB1RD_kernel_m8

static void _snd_mpu401_uart_interrupt(struct snd_mpu401 *mpu)
{
	unsigned long flags;

	if (mpu->info_flags & MPU401_INFO_INPUT) {
		spin_lock_irqsave(&mpu->input_lock, flags);
		if (test_bit(MPU401_MODE_BIT_INPUT, &mpu->mode))
			snd_mpu401_uart_input_read(mpu);
		else
			snd_mpu401_uart_clear_rx(mpu);
		spin_unlock_irqrestore(&mpu->input_lock, flags);
	}
	if (! (mpu->info_flags & MPU401_INFO_TX_IRQ))
		uart_interrupt_tx(mpu);
}

Exemple #5

Fichier : mpu401_uart.c Projet : BackupTheBerlios/tew632-brp-svn

static void _snd_mpu401_uart_interrupt(mpu401_t *mpu)
{
	spin_lock(&mpu->input_lock);
	if (test_bit(MPU401_MODE_BIT_INPUT, &mpu->mode)) {
		snd_mpu401_uart_input_read(mpu);
	} else {
		snd_mpu401_uart_clear_rx(mpu);
	}
	spin_unlock(&mpu->input_lock);
 	/* ok. for better Tx performance try do some output when input is done */
	if (test_bit(MPU401_MODE_BIT_OUTPUT, &mpu->mode) &&
	    test_bit(MPU401_MODE_BIT_OUTPUT_TRIGGER, &mpu->mode)) {
		spin_lock(&mpu->output_lock);
		snd_mpu401_uart_output_write(mpu);
		spin_unlock(&mpu->output_lock);
	}
}

Exemple #6

Fichier : mpu401_uart.c Projet : roysuman/linux

static void _snd_mpu401_uart_interrupt(struct snd_mpu401 *mpu)
{
	unsigned long flags;

	if (mpu->info_flags & MPU401_INFO_INPUT) {
		spin_lock_irqsave(&mpu->input_lock, flags);
		if (test_bit(MPU401_MODE_BIT_INPUT, &mpu->mode))
			snd_mpu401_uart_input_read(mpu);
		else
			snd_mpu401_uart_clear_rx(mpu);
		spin_unlock_irqrestore(&mpu->input_lock, flags);
	}
	if (! (mpu->info_flags & MPU401_INFO_TX_IRQ))
		/* ok. for better Tx performance try do some output
		   when input is done */
		uart_interrupt_tx(mpu);
}