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

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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: Prajadevi H <prajadevi.h@stericsson.com>
Signed-off-by: Philippe Langlais <philippe.langlais@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Philippe Langlais 2011-03-23 11:05:16 +01:00 committed by Grant Likely
parent 95c5c3ab7d
commit 06fb01fd1d
1 changed files with 19 additions and 1 deletions
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20
drivers/spi/amba-pl022.c
View file

@ -324,6 +324,7 @@ struct vendor_data {
bool unidir; bool unidir;
bool extended_cr; bool extended_cr;
bool pl023; 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); SSP_WRITE_BITS(chip->cr0, clk_freq.scr, SSP_CR0_MASK_SCR, 8);
/* Loopback is available on all versions except PL023 */ /* Loopback is available on all versions except PL023 */
if (!pl022->vendor->pl023) { if (pl022->vendor->loopback) {
if (spi->mode & SPI_LOOP) if (spi->mode & SPI_LOOP)
tmp = LOOPBACK_ENABLED; tmp = LOOPBACK_ENABLED;
else else
@ -2233,6 +2234,7 @@ static struct vendor_data vendor_arm = {
.unidir = false, .unidir = false,
.extended_cr = false, .extended_cr = false,
.pl023 = false, .pl023 = false,
.loopback = true,
}; };
@ -2242,6 +2244,7 @@ static struct vendor_data vendor_st = {
.unidir = false, .unidir = false,
.extended_cr = true, .extended_cr = true,
.pl023 = false, .pl023 = false,
.loopback = true,
}; };
static struct vendor_data vendor_st_pl023 = { static struct vendor_data vendor_st_pl023 = {
@ -2250,6 +2253,16 @@ static struct vendor_data vendor_st_pl023 = {
.unidir = false, .unidir = false,
.extended_cr = true, .extended_cr = true,
.pl023 = 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[] = { static struct amba_id pl022_ids[] = {
@ -2283,6 +2296,11 @@ static struct amba_id pl022_ids[] = {
.mask = 0xffffffff, .mask = 0xffffffff,
.data = &vendor_st_pl023, .data = &vendor_st_pl023,
}, },
{
.id = 0x10080023,
.mask = 0xffffffff,
.data = &vendor_db5500_pl023,
},
{ 0, 0 }, { 0, 0 },
}; };