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Commit 06fb01fd authored by Philippe Langlais's avatar Philippe Langlais Committed by Grant Likely
Browse files

spi/pl022: Add loopback support for the SPI on 5500 



Extend the vendor data with a loopback field, and add new
amba-pl022 vendor data for the DB5500 pl023, as the pl023
on db8500 and db5500 vary.

Signed-off-by: default avatarPrajadevi H <prajadevi.h@stericsson.com>
Signed-off-by: default avatarPhilippe Langlais <philippe.langlais@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 95c5c3ab

drivers/spi/amba-pl022.c

+19 −1
Original line number Diff line number Diff line
@@ -324,6 +324,7 @@ struct vendor_data { 
	bool unidir;

	bool extended_cr;

	bool pl023;

	bool loopback;

};



/**
@@ -1983,7 +1984,7 @@ static int pl022_setup(struct spi_device *spi) 


	SSP_WRITE_BITS(chip->cr0, clk_freq.scr, SSP_CR0_MASK_SCR, 8);

	/* Loopback is available on all versions except PL023 */

	if (!pl022->vendor->pl023) {

	if (pl022->vendor->loopback) {

		if (spi->mode & SPI_LOOP)

			tmp = LOOPBACK_ENABLED;

		else
@@ -2233,6 +2234,7 @@ static struct vendor_data vendor_arm = { 
	.unidir = false,

	.extended_cr = false,

	.pl023 = false,

	.loopback = true,

};
@@ -2242,6 +2244,7 @@ static struct vendor_data vendor_st = { 
	.unidir = false,

	.extended_cr = true,

	.pl023 = false,

	.loopback = true,

};



static struct vendor_data vendor_st_pl023 = {
@@ -2250,6 +2253,16 @@ static struct vendor_data vendor_st_pl023 = { 
	.unidir = false,

	.extended_cr = true,

	.pl023 = true,

	.loopback = false,

};



static struct vendor_data vendor_db5500_pl023 = {

	.fifodepth = 32,

	.max_bpw = 32,

	.unidir = false,

	.extended_cr = true,

	.pl023 = true,

	.loopback = true,

};



static struct amba_id pl022_ids[] = {
@@ -2283,6 +2296,11 @@ static struct amba_id pl022_ids[] = { 
		.mask   = 0xffffffff,

		.data   = &vendor_st_pl023,

	},

	{

		.id	= 0x10080023,

		.mask	= 0xffffffff,

		.data	= &vendor_db5500_pl023,

	},

	{ 0, 0 },

};