spi: davinci: Add platdata support
Davanci spi driver has DM support already, this patch
add support for platdata so-that SPL can use it for
low foot-print.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c
index a822858..07fa5e3 100644
--- a/drivers/spi/davinci_spi.c
+++ b/drivers/spi/davinci_spi.c
@@ -14,6 +14,7 @@
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <dm.h>
+#include <dm/platform_data/spi_davinci.h>
/* SPIGCR0 */
#define SPIGCR0_SPIENA_MASK 0x1
@@ -529,28 +530,6 @@
return __davinci_spi_xfer(ds, bitlen, dout, din, flags);
}
-static int davinci_spi_probe(struct udevice *bus)
-{
- /* Nothing to do */
- return 0;
-}
-
-static int davinci_ofdata_to_platadata(struct udevice *bus)
-{
- struct davinci_spi_slave *ds = dev_get_priv(bus);
- const void *blob = gd->fdt_blob;
- int node = dev_of_offset(bus);
-
- ds->regs = devfdt_map_physmem(bus, sizeof(struct davinci_spi_regs));
- if (!ds->regs) {
- printf("%s: could not map device address\n", __func__);
- return -EINVAL;
- }
- ds->num_cs = fdtdec_get_int(blob, node, "num-cs", 4);
-
- return 0;
-}
-
static const struct dm_spi_ops davinci_spi_ops = {
.claim_bus = davinci_spi_claim_bus,
.release_bus = davinci_spi_release_bus,
@@ -559,20 +538,50 @@
.set_mode = davinci_spi_set_mode,
};
+static int davinci_spi_probe(struct udevice *bus)
+{
+ struct davinci_spi_slave *ds = dev_get_priv(bus);
+ struct davinci_spi_platdata *plat = bus->platdata;
+ ds->regs = plat->regs;
+ ds->num_cs = plat->num_cs;
+
+ return 0;
+}
+
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
+static int davinci_ofdata_to_platadata(struct udevice *bus)
+{
+ struct davinci_spi_platdata *plat = bus->platdata;
+ fdt_addr_t addr;
+
+ addr = devfdt_get_addr(bus);
+ if (addr == FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ plat->regs = (struct davinci_spi_regs *)addr;
+ plat->num_cs = fdtdec_get_int(gd->fdt_blob, dev_of_offset(bus), "num-cs", 4);
+
+ return 0;
+}
+
static const struct udevice_id davinci_spi_ids[] = {
{ .compatible = "ti,keystone-spi" },
{ .compatible = "ti,dm6441-spi" },
{ .compatible = "ti,da830-spi" },
{ }
};
+#endif
U_BOOT_DRIVER(davinci_spi) = {
.name = "davinci_spi",
.id = UCLASS_SPI,
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
.of_match = davinci_spi_ids,
- .ops = &davinci_spi_ops,
.ofdata_to_platdata = davinci_ofdata_to_platadata,
- .priv_auto_alloc_size = sizeof(struct davinci_spi_slave),
+ .platdata_auto_alloc_size = sizeof(struct davinci_spi_platdata),
+#endif
.probe = davinci_spi_probe,
+ .ops = &davinci_spi_ops,
+ .priv_auto_alloc_size = sizeof(struct davinci_spi_slave),
};
#endif
diff --git a/include/dm/platform_data/spi_davinci.h b/include/dm/platform_data/spi_davinci.h
new file mode 100644
index 0000000..fbc62c2
--- /dev/null
+++ b/include/dm/platform_data/spi_davinci.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2018 Jagan Teki <jagan@amarulasolutions.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __spi_davinci_h
+#define __spi_davinci_h
+
+struct davinci_spi_platdata {
+ struct davinci_spi_regs *regs;
+ u8 num_cs; /* total no. of CS available */
+};
+
+#endif /* __spi_davinci_h */