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 --- drivers/spi/davinci_spi.c | 47 +++++++++++++++----------- include/dm/platform_data/spi_davinci.h | 15 ++++++++ 2 files changed, 43 insertions(+), 19 deletions(-) create mode 100644 include/dm/platform_data/spi_davinci.h
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index a822858323..07fa5e3b8a 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 @@ -529,50 +530,58 @@ static int davinci_spi_xfer(struct udevice *dev, unsigned int bitlen, return __davinci_spi_xfer(ds, bitlen, dout, din, flags); }
+static const struct dm_spi_ops davinci_spi_ops = { + .claim_bus = davinci_spi_claim_bus, + .release_bus = davinci_spi_release_bus, + .xfer = davinci_spi_xfer, + .set_speed = davinci_spi_set_speed, + .set_mode = davinci_spi_set_mode, +}; + static int davinci_spi_probe(struct udevice *bus) { - /* Nothing to do */ + 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_slave *ds = dev_get_priv(bus); - const void *blob = gd->fdt_blob; - int node = dev_of_offset(bus); + struct davinci_spi_platdata *plat = bus->platdata; + fdt_addr_t addr;
- ds->regs = devfdt_map_physmem(bus, sizeof(struct davinci_spi_regs)); - if (!ds->regs) { - printf("%s: could not map device address\n", __func__); + addr = devfdt_get_addr(bus); + if (addr == FDT_ADDR_T_NONE) return -EINVAL; - } - ds->num_cs = fdtdec_get_int(blob, node, "num-cs", 4); + + 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 dm_spi_ops davinci_spi_ops = { - .claim_bus = davinci_spi_claim_bus, - .release_bus = davinci_spi_release_bus, - .xfer = davinci_spi_xfer, - .set_speed = davinci_spi_set_speed, - .set_mode = davinci_spi_set_mode, -}; - 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 0000000000..fbc62c262a --- /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 */