Unverified Commit 1a1864cd authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
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spi: pxa2xx: Respect Intel SSP type given by a property 



Allow to set the Intel SSP type by reading the property.
Only apply this to the known MFD enumerated LPSS devices.

The check is done by the looking for the specifically
named IO memory resource provided by upper layer. This
won't be an issue in the future because we strictly
prioritize the order in which we are looking for the SSP
type in the code.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221021190018.63646-3-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 88a94721

drivers/spi/spi-pxa2xx.c

+12 −0
Original line number Diff line number Diff line
@@ -1462,9 +1462,12 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev) 
	const struct pci_device_id *pcidev_id = NULL;

	enum pxa_ssp_type type = SSP_UNDEFINED;

	const void *match;

	bool is_lpss_priv;

	int status;

	u64 uid;



	is_lpss_priv = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpss_priv");



	if (pcidev)

		pcidev_id = pci_match_id(pxa2xx_spi_pci_compound_match, pcidev);
@@ -1473,6 +1476,15 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev) 
		type = (enum pxa_ssp_type)match;

	else if (pcidev_id)

		type = (enum pxa_ssp_type)pcidev_id->driver_data;

	else if (is_lpss_priv) {

		u32 value;



		status = device_property_read_u32(dev, "intel,spi-pxa2xx-type", &value);

		if (status)

			return ERR_PTR(status);



		type = (enum pxa_ssp_type)value;

	}



	/* Validate the SSP type correctness */

	if (!(type > SSP_UNDEFINED && type < SSP_MAX))