C++ (Cpp) s3c_dma_call_op Examples

Example #1

File: dma-pl080.c Project: Asrake/m8_android_kernel

static int s3c_dma_dostop(struct s3c2410_dma_chan *chan) 
{
	unsigned long tmp;
	unsigned long flags;

	pr_debug("%s: DMA Channel No : %d\n", __FUNCTION__, chan->number);

	dbg_showchan(chan);

	local_irq_save(flags);

	s3c_dma_flush_fifo(chan);
	
	s3c_dma_call_op(chan, S3C2410_DMAOP_STOP);

	tmp = dma_rdreg(chan, S3C_DMAC_CxCONFIGURATION);
	
	tmp &= ~S3C_DMACONFIG_CHANNEL_ENABLE;
	dma_wrreg(chan, S3C_DMAC_CxCONFIGURATION, tmp);
	
	pr_debug("%s: S3C_DMAC_CxCONFIGURATION : %08x\n", __FUNCTION__, tmp);

	chan->state = S3C_DMA_IDLE;
	chan->load_state = S3C_DMALOAD_NONE;

	local_irq_restore(flags);

	return 0;
}

Example #2

File: dma-pl080.c Project: antibyte/Samdroid-Turbo-Kernel

static int s3c_dma_dostop(struct s3c2410_dma_chan *chan) 
{
	unsigned long tmp;
	unsigned long flags;

	pr_debug("%s: DMA Channel No : %d\n", __FUNCTION__, chan->number);

	dbg_showchan(chan);

	local_irq_save(flags);

    //Commenting out this function call(as its causing freeze) and even without this it adheres to  
    //ARM Primecell 080's disabling a DMA channel and losing data in the FIFO method 
	//s3c_dma_flush_fifo(chan);
	
	s3c_dma_call_op(chan, S3C2410_DMAOP_STOP);

	tmp = dma_rdreg(chan, S3C_DMAC_CxCONFIGURATION);
	
	tmp &= ~S3C_DMACONFIG_CHANNEL_ENABLE;
	dma_wrreg(chan, S3C_DMAC_CxCONFIGURATION, tmp);
	
	pr_debug("%s: S3C_DMAC_CxCONFIGURATION : %08x\n", __FUNCTION__, tmp);

	chan->state = S3C_DMA_IDLE;
	chan->load_state = S3C_DMALOAD_NONE;

	local_irq_restore(flags);

	return 0;
}

Example #3

File: dma-pl080.c Project: Asrake/m8_android_kernel

/* s3c_dma_start
 *
 * start a dma channel going
 */
static int s3c_dma_start(struct s3c2410_dma_chan *chan)
{
	unsigned long flags;

	pr_debug("s3c_start_dma: channel number=%d, index=%d\n", chan->number, chan->index);

	local_irq_save(flags);

	if (chan->state == S3C_DMA_RUNNING) {
		pr_debug("s3c_start_dma: already running (%d)\n", chan->state);
		local_irq_restore(flags);
		return 0;
	}

	chan->state = S3C_DMA_RUNNING;

	/* check wether there is anything to load, and if not, see
	 * if we can find anything to load
	 */

	if (chan->load_state == S3C_DMALOAD_NONE) {
		if (chan->next == NULL) {
			printk(KERN_ERR "dma%d: dcon_num has nothing loaded\n", chan->number);
			chan->state = S3C_DMA_IDLE;
			local_irq_restore(flags);
			return -EINVAL;
		}

		s3c_dma_loadbuffer(chan, chan->next);
	}

	dbg_showchan(chan);

	/* enable the channel */

	if (!chan->irq_enabled) {
		enable_irq(chan->irq);
		chan->irq_enabled = 1;
	}

	/* Get the DMA channel  started ...*/
	dma_wrreg(chan, S3C_DMAC_CxCONFIGURATION, chan->config_flags);

	pr_debug("%s:wrote %08lx to S3C_DMAC_CxCONFIGURATION.\n",__FUNCTION__, chan->config_flags);

	/* Start the DMA operation on Peripheral */
	s3c_dma_call_op(chan, S3C2410_DMAOP_START);

	dbg_showchan(chan);

	local_irq_restore(flags);
	return 0;
}

Example #4

File: dma-pl330.c Project: illyah/samsung_kernel_volans

/* s3c_dma_start
 *
 * start a dma channel going
 */
static int s3c_dma_start(struct s3c2410_dma_chan *chan)
{
	unsigned long flags;

	pr_debug("s3c_start_dma: channel number=%d, index=%d\n", chan->number, chan->index);

	local_irq_save(flags);

	if (chan->state == S3C_DMA_RUNNING) {
		pr_debug("s3c_start_dma: already running (%d)\n", chan->state);
		local_irq_restore(flags);
		return 0;
	}

	chan->state = S3C_DMA_RUNNING;

	/* check wether there is anything to load, and if not, see
	 * if we can find anything to load
	 */

	if (chan->load_state == S3C_DMALOAD_NONE) {
		if (chan->next == NULL) {
			printk(KERN_ERR "dma CH %d: dcon_num has nothing loaded\n", chan->number);
			chan->state = S3C_DMA_IDLE;
			local_irq_restore(flags);
			return -EINVAL;
		}
		s3c_dma_loadbuffer(chan, chan->next);
	}

	dbg_showchan(chan);

	/* enable the channel */

	if (!chan->irq_enabled) {
		enable_irq(chan->irq);
		chan->irq_enabled = 1;
	}

	start_DMA_channel(dma_regaddr(chan->dma_con, S3C_DMAC_DBGSTATUS), chan->number,
					chan->curr->mcptr, PL330_NON_SECURE_DMA);

	/* Start the DMA operation on Peripheral */
	s3c_dma_call_op(chan, S3C2410_DMAOP_START);

	dbg_showchan(chan);

	local_irq_restore(flags);
	return 0;
}

Example #5

File: dma-pl330.c Project: illyah/samsung_kernel_volans

static int s3c_dma_dostop(struct s3c2410_dma_chan *chan)
{
	unsigned long flags;

	pr_debug("%s: DMA Channel No : %d\n", __FUNCTION__, chan->number);

	dbg_showchan(chan);

	local_irq_save(flags);

	s3c_dma_call_op(chan, S3C2410_DMAOP_STOP);

	stop_DMA_channel(dma_regaddr(chan->dma_con, S3C_DMAC_DBGSTATUS), chan->number);

	chan->state = S3C_DMA_IDLE;
	chan->load_state = S3C_DMALOAD_NONE;

	local_irq_restore(flags);

	return 0;
}