[PATCH v2 4/5] spi: omap3_spi: Read platform data in ofdata_to_platdata()

[Faiz Abbas]

Add an ofdata_to_platdata() callback to access dts in U-boot and
access all platform data in it. This prepares the driver for supporting
both device tree as well as static platform data structures in SPL.

Signed-off-by: Faiz Abbas <faiz_ab...@ti.com>
---
 drivers/spi/omap3_spi.c | 37 ++++++++++++++++++++++++++-----------
 1 file changed, 26 insertions(+), 11 deletions(-)

diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
index fb1cf360fc..56cb217486 100644
--- a/drivers/spi/omap3_spi.c
+++ b/drivers/spi/omap3_spi.c
@@ -414,17 +414,10 @@ static int omap3_spi_set_wordlen(struct udevice *dev, 
unsigned int wordlen)
 static int omap3_spi_probe(struct udevice *dev)
 {
        struct omap3_spi_priv *priv = dev_get_priv(dev);
-       const void *blob = gd->fdt_blob;
-       int node = dev_of_offset(dev);
+       struct omap3_spi_plat *plat = dev_get_platdata(dev);
 
-       struct omap2_mcspi_platform_config* data =
-               (struct omap2_mcspi_platform_config*)dev_get_driver_data(dev);
-
-       priv->regs = (struct mcspi *)(dev_read_addr(dev) + data->regs_offset);
-       if (fdtdec_get_bool(blob, node, "ti,pindir-d0-out-d1-in"))
-               priv->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN;
-       else
-               priv->pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT;
+       priv->regs = plat->regs;
+       priv->pin_dir = plat->pin_dir;
        priv->wordlen = SPI_DEFAULT_WORDLEN;
 
        spi_reset(priv->regs);
@@ -476,6 +469,7 @@ static const struct dm_spi_ops omap3_spi_ops = {
         */
 };
 
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 static struct omap2_mcspi_platform_config omap2_pdata = {
        .regs_offset = 0,
 };
@@ -484,16 +478,37 @@ static struct omap2_mcspi_platform_config omap4_pdata = {
        .regs_offset = OMAP4_MCSPI_REG_OFFSET,
 };
 
+static int omap3_spi_ofdata_to_platdata(struct udevice *dev)
+{
+       struct omap2_mcspi_platform_config *data =
+               (struct omap2_mcspi_platform_config *)dev_get_driver_data(dev);
+       struct omap3_spi_plat *plat = dev_get_platdata(dev);
+
+       plat->regs = (struct mcspi *)(dev_read_addr(dev) + data->regs_offset);
+
+       if (dev_read_bool(dev, "ti,pindir-d0-out-d1-in"))
+               plat->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN;
+       else
+               plat->pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT;
+
+       return 0;
+}
+
 static const struct udevice_id omap3_spi_ids[] = {
        { .compatible = "ti,omap2-mcspi", .data = (ulong)&omap2_pdata },
        { .compatible = "ti,omap4-mcspi", .data = (ulong)&omap4_pdata },
        { }
 };
-
+#endif
 U_BOOT_DRIVER(omap3_spi) = {
        .name   = "omap3_spi",
        .id     = UCLASS_SPI,
+       .flags  = DM_FLAG_PRE_RELOC,
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
        .of_match = omap3_spi_ids,
+       .ofdata_to_platdata = omap3_spi_ofdata_to_platdata,
+       .platdata_auto_alloc_size = sizeof(struct omap3_spi_plat),
+#endif
        .probe = omap3_spi_probe,
        .ops    = &omap3_spi_ops,
        .priv_auto_alloc_size = sizeof(struct omap3_spi_priv),
-- 
2.17.1