Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f8964968 authored by Daniel Mack's avatar Daniel Mack Committed by Vinod Koul
Browse files

dma: cppi41: restore more registers 



With active users over suspend/resume cycles, it turns out that
more registers, in particular DMA_TDFDQ and RXHPCRA0, have to be
restored on resume.

Signed-off-by: default avatarDaniel Mack <zonque@gmail.com>
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 26209379

drivers/dma/cppi41.c

+15 −0
Original line number Diff line number Diff line
@@ -141,6 +141,9 @@ struct cppi41_dd { 
	const struct chan_queues *queues_rx;

	const struct chan_queues *queues_tx;

	struct chan_queues td_queue;



	/* context for suspend/resume */

	unsigned int dma_tdfdq;

};



#define FIST_COMPLETION_QUEUE	93
@@ -1050,6 +1053,7 @@ static int cppi41_suspend(struct device *dev) 
{

	struct cppi41_dd *cdd = dev_get_drvdata(dev);



	cdd->dma_tdfdq = cppi_readl(cdd->ctrl_mem + DMA_TDFDQ);

	cppi_writel(0, cdd->usbss_mem + USBSS_IRQ_CLEARR);

	disable_sched(cdd);
@@ -1059,12 +1063,23 @@ static int cppi41_suspend(struct device *dev) 
static int cppi41_resume(struct device *dev)

{

	struct cppi41_dd *cdd = dev_get_drvdata(dev);

	struct cppi41_channel *c;

	int i;



	for (i = 0; i < DESCS_AREAS; i++)

		cppi_writel(cdd->descs_phys, cdd->qmgr_mem + QMGR_MEMBASE(i));



	list_for_each_entry(c, &cdd->ddev.channels, chan.device_node)

		if (!c->is_tx)

			cppi_writel(c->q_num, c->gcr_reg + RXHPCRA0);



	init_sched(cdd);



	cppi_writel(cdd->dma_tdfdq, cdd->ctrl_mem + DMA_TDFDQ);

	cppi_writel(cdd->scratch_phys, cdd->qmgr_mem + QMGR_LRAM0_BASE);

	cppi_writel(QMGR_SCRATCH_SIZE, cdd->qmgr_mem + QMGR_LRAM_SIZE);

	cppi_writel(0, cdd->qmgr_mem + QMGR_LRAM1_BASE);



	cppi_writel(USBSS_IRQ_PD_COMP, cdd->usbss_mem + USBSS_IRQ_ENABLER);



	return 0;