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Commit bf07c9f2 authored by Aaro Koskinen's avatar Aaro Koskinen Committed by Kevin Hilman
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OMAP: PM: Clear DMA channel state after a wakeup 



Clear DMA channel states so that users can assume a known initial
state.

Signed-off-by: default avatarAaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent cb0cb2b8

arch/arm/plat-omap/dma.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -2358,6 +2358,8 @@ void omap_dma_global_context_save(void) 




void omap_dma_global_context_restore(void)

void omap_dma_global_context_restore(void)

{

{

	int ch;



	dma_write(omap_dma_global_context.dma_gcr, GCR);

	dma_write(omap_dma_global_context.dma_gcr, GCR);

	dma_write(omap_dma_global_context.dma_ocp_sysconfig,

	dma_write(omap_dma_global_context.dma_ocp_sysconfig,

		OCP_SYSCONFIG);

		OCP_SYSCONFIG);
@@ -2372,6 +2374,10 @@ void omap_dma_global_context_restore(void) 
	 */

	 */

	if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP))

	if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP))

		dma_write(0x3 , IRQSTATUS_L0);

		dma_write(0x3 , IRQSTATUS_L0);



	for (ch = 0; ch < dma_chan_count; ch++)

		if (dma_chan[ch].dev_id != -1)

			omap_clear_dma(ch);

}

}





/*----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------*/