Commit f8d9ddbc authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
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dmaengine: dw: platform: Enable iDMA 32-bit on Intel Elkhart Lake 



Intel® PSE (Programmable Services Engine) provides few DMA controllers
to the host on Intel Elkhart Lake. Enable them in the ACPI glue driver.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20190820131546.75744-6-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent b3757413

drivers/dma/dw/platform.c

+11 −5
Original line number Diff line number Diff line
@@ -173,7 +173,6 @@ static int dw_probe(struct platform_device *pdev) 
	struct dw_dma_chip *chip;

	struct device *dev = &pdev->dev;

	struct resource *mem;

	const struct dw_dma_platform_data *pdata;

	int err;



	match = device_get_match_data(dev);
@@ -201,13 +200,14 @@ static int dw_probe(struct platform_device *pdev) 
	if (err)

		return err;



	pdata = dev_get_platdata(dev);

	if (!pdata)

		pdata = dw_dma_parse_dt(pdev);

	if (!data->pdata)

		data->pdata = dev_get_platdata(dev);

	if (!data->pdata)

		data->pdata = dw_dma_parse_dt(pdev);



	chip->dev = dev;

	chip->id = pdev->id;

	chip->pdata = pdata;

	chip->pdata = data->pdata;



	data->chip = chip;
@@ -298,6 +298,12 @@ static const struct acpi_device_id dw_dma_acpi_id_table[] = { 
	{ "INTL9C60", (kernel_ulong_t)&dw_dma_chip_pdata },

	{ "80862286", (kernel_ulong_t)&dw_dma_chip_pdata },

	{ "808622C0", (kernel_ulong_t)&dw_dma_chip_pdata },



	/* Elkhart Lake iDMA 32-bit (PSE DMA) */

	{ "80864BB4", (kernel_ulong_t)&idma32_chip_pdata },

	{ "80864BB5", (kernel_ulong_t)&idma32_chip_pdata },

	{ "80864BB6", (kernel_ulong_t)&idma32_chip_pdata },



	{ }

};

MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);