Commit 868772d8 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Greg Kroah-Hartman
Browse files

ARM: OMAP2+: DMA: Add slave map entries for 24xx external request lines 



The external request lines are used by tusb6010 on OMAP24xx platforms.
Update the map so the driver can use dmaengine API to request the DMA
channel. At the same time add temporary map containing only the external
DMA request numbers for DT booted case on omap24xx since the tusb6010 stack
is not yet supports DT boot.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarBin Liu <b-liu@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 47699b0a

arch/arm/mach-omap2/dma.c

+24 −0
Original line number Diff line number Diff line
@@ -249,6 +249,24 @@ static const struct dma_slave_map omap24xx_sdma_map[] = { 
	{ "omap_uart.2", "rx", SDMA_FILTER_PARAM(54) },

	{ "omap_hsmmc.0", "tx", SDMA_FILTER_PARAM(61) },

	{ "omap_hsmmc.0", "rx", SDMA_FILTER_PARAM(62) },



	/* external DMA requests when tusb6010 is used */

	{ "musb-tusb", "dmareq0", SDMA_FILTER_PARAM(2) },

	{ "musb-tusb", "dmareq1", SDMA_FILTER_PARAM(3) },

	{ "musb-tusb", "dmareq2", SDMA_FILTER_PARAM(14) }, /* OMAP2420 only */

	{ "musb-tusb", "dmareq3", SDMA_FILTER_PARAM(15) }, /* OMAP2420 only */

	{ "musb-tusb", "dmareq4", SDMA_FILTER_PARAM(16) }, /* OMAP2420 only */

	{ "musb-tusb", "dmareq5", SDMA_FILTER_PARAM(64) }, /* OMAP2420 only */

};



static const struct dma_slave_map omap24xx_sdma_dt_map[] = {

	/* external DMA requests when tusb6010 is used */

	{ "musb-hdrc.1.auto", "dmareq0", SDMA_FILTER_PARAM(2) },

	{ "musb-hdrc.1.auto", "dmareq1", SDMA_FILTER_PARAM(3) },

	{ "musb-hdrc.1.auto", "dmareq2", SDMA_FILTER_PARAM(14) }, /* OMAP2420 only */

	{ "musb-hdrc.1.auto", "dmareq3", SDMA_FILTER_PARAM(15) }, /* OMAP2420 only */

	{ "musb-hdrc.1.auto", "dmareq4", SDMA_FILTER_PARAM(16) }, /* OMAP2420 only */

	{ "musb-hdrc.1.auto", "dmareq5", SDMA_FILTER_PARAM(64) }, /* OMAP2420 only */

};



static const struct dma_slave_map omap3xxx_sdma_map[] = {
@@ -346,6 +364,12 @@ static int __init omap2_system_dma_init_dev(struct omap_hwmod *oh, void *unused) 
			       __func__);

			return -ENODEV;

		}

	} else {

		if (soc_is_omap24xx()) {

			/* DMA slave map for drivers not yet converted to DT */

			p.slave_map = omap24xx_sdma_dt_map;

			p.slavecnt = ARRAY_SIZE(omap24xx_sdma_dt_map);

		}

	}



	pdev = omap_device_build(name, 0, oh, &p, sizeof(p));

CRA Git | Maintained and supported by SUSTech CRA and CCSE