[U-Boot] [PATCH v3 085/108] spi: ich: Add support for get_mmap() method
Simon Glass
sjg at chromium.org
Mon Oct 21 03:38:50 UTC 2019
Add this method so that the memory-mapped location of the SPI flash can
be queried.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v3: None
Changes in v2: None
drivers/spi/ich.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
index ae1dc64bde8..ec0f77f6e40 100644
--- a/drivers/spi/ich.c
+++ b/drivers/spi/ich.c
@@ -610,6 +610,37 @@ 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_x86_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;
@@ -826,6 +857,7 @@ 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
--
2.23.0.866.gb869b98d4c-goog
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