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spi: ich: Add support for get_mmap() method

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Add this method so that the memory-mapped location of the SPI flash can
be queried.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-12-06 21:42:47 -07:00 committed by Bin Meng
parent 1facebd18f
commit 92842147c3
1 changed files with 32 additions and 0 deletions
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32
drivers/spi/ich.c
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@ -611,6 +611,37 @@ static int ich_spi_exec_op(struct spi_slave *slave, const struct spi_mem_op *op)
return ret;
}
static int ich_get_mmap_bus(struct udevice *bus, ulong *map_basep,
uint *map_sizep, uint *offsetp)
{
pci_dev_t spi_bdf;
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct pci_child_platdata *pplat = dev_get_parent_platdata(bus);
spi_bdf = pplat->devfn;
#else
struct ich_spi_platdata *plat = dev_get_platdata(bus);
/*
* We cannot rely on plat->bdf being set up yet since this method can
* be called before the device is probed. Use the of-platdata directly
* instead.
*/
spi_bdf = pci_ofplat_get_devfn(plat->dtplat.reg[0]);
#endif
return fast_spi_get_bios_mmap(spi_bdf, map_basep, map_sizep, offsetp);
}
static int ich_get_mmap(struct udevice *dev, ulong *map_basep, uint *map_sizep,
uint *offsetp)
{
struct udevice *bus = dev_get_parent(dev);
return ich_get_mmap_bus(bus, map_basep, map_sizep, offsetp);
}
static int ich_spi_adjust_size(struct spi_slave *slave, struct spi_mem_op *op)
{
unsigned int page_offset;
@ -835,6 +866,7 @@ static const struct dm_spi_ops ich_spi_ops = {
.set_speed = ich_spi_set_speed,
.set_mode = ich_spi_set_mode,
.mem_ops = &ich_controller_mem_ops,
.get_mmap = ich_get_mmap,
/*
* cs_info is not needed, since we require all chip selects to be
* in the device tree explicitly