Unverified Commit 52718908 authored by Jarkko Nikula's avatar Jarkko Nikula Committed by Mark Brown
Browse files

spi: dw-pci: Add support for Intel Elkhart Lake PSE SPI 



Add support for Intel(R) Programmable Services Engine (Intel(R) PSE) SPI
controller in Intel Elkhart Lake when interface is assigned to the host
processor.

Signed-off-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20190812101344.3975-1-jarkko.nikula@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 79629d0f

drivers/spi/spi-dw-pci.c

+13 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ struct spi_pci_desc { 
	int	(*setup)(struct dw_spi *);

	u16	num_cs;

	u16	bus_num;

	u32	max_freq;

};



static struct spi_pci_desc spi_pci_mid_desc_1 = {
@@ -33,6 +34,12 @@ static struct spi_pci_desc spi_pci_mid_desc_2 = { 
	.bus_num = 1,

};



static struct spi_pci_desc spi_pci_ehl_desc = {

	.num_cs = 1,

	.bus_num = -1,

	.max_freq = 100000000,

};



static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

{

	struct dw_spi *dws;
@@ -65,6 +72,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 
	if (desc) {

		dws->num_cs = desc->num_cs;

		dws->bus_num = desc->bus_num;

		dws->max_freq = desc->max_freq;



		if (desc->setup) {

			ret = desc->setup(dws);
@@ -125,6 +133,11 @@ static const struct pci_device_id pci_ids[] = { 
	{ PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},

	/* Intel MID platform SPI controller 2 */

	{ PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},

	/* Intel Elkhart Lake PSE SPI controllers */

	{ PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&spi_pci_ehl_desc},

	{ PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&spi_pci_ehl_desc},

	{ PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&spi_pci_ehl_desc},

	{ PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&spi_pci_ehl_desc},

	{},

};

CRA Git | Maintained and supported by SUSTech CRA and CCSE