sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

spi: Pass pointer to spi_slave structure in spi_setup_slave

Browse Source 
For spi_setup_slave, instead of making the platform driver return a
pointer to spi_slave structure, pass in a structure pointer that can be
filled in by the driver as required. This removes the need for platform
drivers to maintain a slave structure in data/CAR section.

BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully

Change-Id: Ia15a4f88ef4dcfdf616bb1c22261e7cb642a7573
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17683
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh
2016-12-01 01:02:44 -08:00
committed by Furquan Shaikh
parent 0dba0254ea
commit 36b81af9e8
30 changed files with 201 additions and 235 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
src/soc/qualcomm/ipq806x/spi.c
View File

@@ -499,7 +499,26 @@ void spi_init()
memset(spi_slave_pool, 0, sizeof(spi_slave_pool));
}
struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
static struct ipq_spi_slave *to_ipq_spi(const struct spi_slave *slave)
{
struct ipq_spi_slave *ds;
size_t i;
for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) {
ds = spi_slave_pool + i;
if (!ds->allocated)
continue;
if ((ds->slave.bus == slave->bus) &&
(ds->slave.cs == slave->cs))
return ds;
}
return NULL;
}
int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
{
struct ipq_spi_slave *ds = NULL;
int i;
@@ -521,9 +540,10 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
if (spi_slave_pool[i].allocated)
continue;
ds = spi_slave_pool + i;
ds->slave.bus = bus;
ds->slave.cs = cs;
ds->regs = &spi_reg[bus];
ds->slave.bus = slave->bus = bus;
ds->slave.cs = slave->cs = cs;
ds->regs = &spi_reg[bus];
/*
* TODO(vbendeb):
@@ -534,11 +554,11 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
ds->mode = GSBI_SPI_MODE_0;
ds->allocated = 1;
return &ds->slave;
return 0;
}
printk(BIOS_ERR, "SPI error: all %d pools busy\n", i);
return NULL;
return -1;
}
/*