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Commit 175267b3 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
Browse files

dmaengine: dw: platform: provide platform data for Intel 



Provide platform data explicitly for Intel SoCs where dw_dmac is enumerated by
ACPI.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 30cb2639

drivers/dma/dw/platform.c

+16 −1
Original line number Diff line number Diff line
@@ -155,6 +155,7 @@ static int dw_probe(struct platform_device *pdev) 
	struct dw_dma_chip *chip;

	struct device *dev = &pdev->dev;

	struct resource *mem;

	const struct acpi_device_id *id;

	struct dw_dma_platform_data *pdata;

	int err;
@@ -178,6 +179,11 @@ static int dw_probe(struct platform_device *pdev) 
	pdata = dev_get_platdata(dev);

	if (!pdata)

		pdata = dw_dma_parse_dt(pdev);

	if (!pdata && has_acpi_companion(dev)) {

		id = acpi_match_device(dev->driver->acpi_match_table, dev);

		if (id)

			pdata = (struct dw_dma_platform_data *)id->driver_data;

	}



	chip->dev = dev;
@@ -246,8 +252,17 @@ MODULE_DEVICE_TABLE(of, dw_dma_of_id_table); 
#endif



#ifdef CONFIG_ACPI

static struct dw_dma_platform_data dw_dma_acpi_pdata = {

	.nr_channels = 8,

	.is_private = true,

	.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,

	.chan_priority = CHAN_PRIORITY_ASCENDING,

	.block_size = 4095,

	.nr_masters = 2,

};



static const struct acpi_device_id dw_dma_acpi_id_table[] = {

	{ "INTL9C60", 0 },

	{ "INTL9C60", (kernel_ulong_t)&dw_dma_acpi_pdata },

	{ }

};

MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);