Commit 731ec4d8 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Tony Lindgren
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ARM: OMAP2+: DMA: Provide dma_slave_map to omap-dma for legacy boot 



We still have some boards booting in legacy mode and they will need to have
the device/slave -> filter_fn mapping so we can convert the OMAP drivers
to use the new dmaengine API for requesting channels.
Only some OMAP24xx and OMAP3xxx boards can boot in legacy mode which means
we only need to provide the map for these SoCs.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent c4e35783

arch/arm/mach-omap2/dma.c

+117 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/init.h>

#include <linux/device.h>

#include <linux/dma-mapping.h>

#include <linux/dmaengine.h>

#include <linux/of.h>

#include <linux/omap-dma.h>
@@ -203,6 +204,108 @@ static unsigned configure_dma_errata(void) 
	return errata;

}



static const struct dma_slave_map omap24xx_sdma_map[] = {

	{ "omap-gpmc", "rxtx", SDMA_FILTER_PARAM(4) },

	{ "omap-aes", "tx", SDMA_FILTER_PARAM(9) },

	{ "omap-aes", "rx", SDMA_FILTER_PARAM(10) },

	{ "omap-sham", "rx", SDMA_FILTER_PARAM(13) },

	{ "omap2_mcspi.2", "tx0", SDMA_FILTER_PARAM(15) },

	{ "omap2_mcspi.2", "rx0", SDMA_FILTER_PARAM(16) },

	{ "omap-mcbsp.3", "tx", SDMA_FILTER_PARAM(17) },

	{ "omap-mcbsp.3", "rx", SDMA_FILTER_PARAM(18) },

	{ "omap-mcbsp.4", "tx", SDMA_FILTER_PARAM(19) },

	{ "omap-mcbsp.4", "rx", SDMA_FILTER_PARAM(20) },

	{ "omap-mcbsp.5", "tx", SDMA_FILTER_PARAM(21) },

	{ "omap-mcbsp.5", "rx", SDMA_FILTER_PARAM(22) },

	{ "omap2_mcspi.2", "tx1", SDMA_FILTER_PARAM(23) },

	{ "omap2_mcspi.2", "rx1", SDMA_FILTER_PARAM(24) },

	{ "omap_i2c.1", "tx", SDMA_FILTER_PARAM(27) },

	{ "omap_i2c.1", "rx", SDMA_FILTER_PARAM(28) },

	{ "omap_i2c.2", "tx", SDMA_FILTER_PARAM(29) },

	{ "omap_i2c.2", "rx", SDMA_FILTER_PARAM(30) },

	{ "omap-mcbsp.1", "tx", SDMA_FILTER_PARAM(31) },

	{ "omap-mcbsp.1", "rx", SDMA_FILTER_PARAM(32) },

	{ "omap-mcbsp.2", "tx", SDMA_FILTER_PARAM(33) },

	{ "omap-mcbsp.2", "rx", SDMA_FILTER_PARAM(34) },

	{ "omap2_mcspi.0", "tx0", SDMA_FILTER_PARAM(35) },

	{ "omap2_mcspi.0", "rx0", SDMA_FILTER_PARAM(36) },

	{ "omap2_mcspi.0", "tx1", SDMA_FILTER_PARAM(37) },

	{ "omap2_mcspi.0", "rx1", SDMA_FILTER_PARAM(38) },

	{ "omap2_mcspi.0", "tx2", SDMA_FILTER_PARAM(39) },

	{ "omap2_mcspi.0", "rx2", SDMA_FILTER_PARAM(40) },

	{ "omap2_mcspi.0", "tx3", SDMA_FILTER_PARAM(41) },

	{ "omap2_mcspi.0", "rx3", SDMA_FILTER_PARAM(42) },

	{ "omap2_mcspi.1", "tx0", SDMA_FILTER_PARAM(43) },

	{ "omap2_mcspi.1", "rx0", SDMA_FILTER_PARAM(44) },

	{ "omap2_mcspi.1", "tx1", SDMA_FILTER_PARAM(45) },

	{ "omap2_mcspi.1", "rx1", SDMA_FILTER_PARAM(46) },

	{ "omap_hsmmc.1", "tx", SDMA_FILTER_PARAM(47) },

	{ "omap_hsmmc.1", "rx", SDMA_FILTER_PARAM(48) },

	{ "omap_uart.0", "tx", SDMA_FILTER_PARAM(49) },

	{ "omap_uart.0", "rx", SDMA_FILTER_PARAM(50) },

	{ "omap_uart.1", "tx", SDMA_FILTER_PARAM(51) },

	{ "omap_uart.1", "rx", SDMA_FILTER_PARAM(52) },

	{ "omap_uart.2", "tx", SDMA_FILTER_PARAM(53) },

	{ "omap_uart.2", "rx", SDMA_FILTER_PARAM(54) },

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

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

};



static const struct dma_slave_map omap3xxx_sdma_map[] = {

	{ "omap-gpmc", "rxtx", SDMA_FILTER_PARAM(4) },

	{ "omap2_mcspi.2", "tx0", SDMA_FILTER_PARAM(15) },

	{ "omap2_mcspi.2", "rx0", SDMA_FILTER_PARAM(16) },

	{ "omap-mcbsp.3", "tx", SDMA_FILTER_PARAM(17) },

	{ "omap-mcbsp.3", "rx", SDMA_FILTER_PARAM(18) },

	{ "omap-mcbsp.4", "tx", SDMA_FILTER_PARAM(19) },

	{ "omap-mcbsp.4", "rx", SDMA_FILTER_PARAM(20) },

	{ "omap-mcbsp.5", "tx", SDMA_FILTER_PARAM(21) },

	{ "omap-mcbsp.5", "rx", SDMA_FILTER_PARAM(22) },

	{ "omap2_mcspi.2", "tx1", SDMA_FILTER_PARAM(23) },

	{ "omap2_mcspi.2", "rx1", SDMA_FILTER_PARAM(24) },

	{ "omap_i2c.3", "tx", SDMA_FILTER_PARAM(25) },

	{ "omap_i2c.3", "rx", SDMA_FILTER_PARAM(26) },

	{ "omap_i2c.1", "tx", SDMA_FILTER_PARAM(27) },

	{ "omap_i2c.1", "rx", SDMA_FILTER_PARAM(28) },

	{ "omap_i2c.2", "tx", SDMA_FILTER_PARAM(29) },

	{ "omap_i2c.2", "rx", SDMA_FILTER_PARAM(30) },

	{ "omap-mcbsp.1", "tx", SDMA_FILTER_PARAM(31) },

	{ "omap-mcbsp.1", "rx", SDMA_FILTER_PARAM(32) },

	{ "omap-mcbsp.2", "tx", SDMA_FILTER_PARAM(33) },

	{ "omap-mcbsp.2", "rx", SDMA_FILTER_PARAM(34) },

	{ "omap2_mcspi.0", "tx0", SDMA_FILTER_PARAM(35) },

	{ "omap2_mcspi.0", "rx0", SDMA_FILTER_PARAM(36) },

	{ "omap2_mcspi.0", "tx1", SDMA_FILTER_PARAM(37) },

	{ "omap2_mcspi.0", "rx1", SDMA_FILTER_PARAM(38) },

	{ "omap2_mcspi.0", "tx2", SDMA_FILTER_PARAM(39) },

	{ "omap2_mcspi.0", "rx2", SDMA_FILTER_PARAM(40) },

	{ "omap2_mcspi.0", "tx3", SDMA_FILTER_PARAM(41) },

	{ "omap2_mcspi.0", "rx3", SDMA_FILTER_PARAM(42) },

	{ "omap2_mcspi.1", "tx0", SDMA_FILTER_PARAM(43) },

	{ "omap2_mcspi.1", "rx0", SDMA_FILTER_PARAM(44) },

	{ "omap2_mcspi.1", "tx1", SDMA_FILTER_PARAM(45) },

	{ "omap2_mcspi.1", "rx1", SDMA_FILTER_PARAM(46) },

	{ "omap_hsmmc.1", "tx", SDMA_FILTER_PARAM(47) },

	{ "omap_hsmmc.1", "rx", SDMA_FILTER_PARAM(48) },

	{ "omap_uart.0", "tx", SDMA_FILTER_PARAM(49) },

	{ "omap_uart.0", "rx", SDMA_FILTER_PARAM(50) },

	{ "omap_uart.1", "tx", SDMA_FILTER_PARAM(51) },

	{ "omap_uart.1", "rx", SDMA_FILTER_PARAM(52) },

	{ "omap_uart.2", "tx", SDMA_FILTER_PARAM(53) },

	{ "omap_uart.2", "rx", SDMA_FILTER_PARAM(54) },

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

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

	{ "omap-aes", "tx", SDMA_FILTER_PARAM(65) },

	{ "omap-aes", "rx", SDMA_FILTER_PARAM(66) },

	{ "omap-sham", "rx", SDMA_FILTER_PARAM(69) },

	{ "omap2_mcspi.3", "tx0", SDMA_FILTER_PARAM(70) },

	{ "omap2_mcspi.3", "rx0", SDMA_FILTER_PARAM(71) },

	{ "omap_hsmmc.2", "tx", SDMA_FILTER_PARAM(77) },

	{ "omap_hsmmc.2", "rx", SDMA_FILTER_PARAM(78) },

	{ "omap_uart.3", "tx", SDMA_FILTER_PARAM(81) },

	{ "omap_uart.3", "rx", SDMA_FILTER_PARAM(82) },

};



static struct omap_system_dma_plat_info dma_plat_info __initdata = {

	.reg_map	= reg_map,

	.channel_stride	= 0x60,
@@ -231,6 +334,20 @@ static int __init omap2_system_dma_init_dev(struct omap_hwmod *oh, void *unused) 
	p.dma_attr = (struct omap_dma_dev_attr *)oh->dev_attr;

	p.errata = configure_dma_errata();



	if (!of_have_populated_dt()) {

		if (soc_is_omap24xx()) {

			p.slave_map = omap24xx_sdma_map;

			p.slavecnt = ARRAY_SIZE(omap24xx_sdma_map);

		} else if (soc_is_omap34xx() || soc_is_omap3630()) {

			p.slave_map = omap3xxx_sdma_map;

			p.slavecnt = ARRAY_SIZE(omap3xxx_sdma_map);

		} else {

			pr_err("%s: The legacy DMA map is not provided!\n",

			       __func__);

			return -ENODEV;

		}

	}



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

	if (IS_ERR(pdev)) {

		pr_err("%s: Can't build omap_device for %s:%s.\n",

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