mtd: spi: Export spi_flash_std_probe()

With of-platdata we need to create drivers for particular chips, or at
least drivers that are separate from the standard code, since C structures
are created by dtoc which are private to that driver.

To avoid duplicating the probing code, export this probe function for use
by these drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index f051e473ffc4d9a945f1b729c249a77771404db3..72b6ee702d4cd9d1b086cc74f32e92781af36a10 100644 (file)
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -137,7 +137,7 @@ static int spi_flash_std_get_sw_write_prot(struct udevice *dev)
        return spi_flash_cmd_get_sw_write_prot(flash);
 }
 
-static int spi_flash_std_probe(struct udevice *dev)
+int spi_flash_std_probe(struct udevice *dev)
 {
        struct spi_slave *slave = dev_get_parent_priv(dev);
        struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);

diff --git a/include/spi_flash.h b/include/spi_flash.h
index 55b4721813a7a8531f36b273fa89323b874afc94..0b23f57a71b34f502f8801dcaa11d6f3158e2fd2 100644 (file)
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -102,6 +102,18 @@ int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len);
  */
 int spl_flash_get_sw_write_prot(struct udevice *dev);
 
+/**
+ * spi_flash_std_probe() - Probe a SPI flash device
+ *
+ * This is the standard internal method for probing a SPI flash device to
+ * determine its type. It can be used in chip-specific drivers which need to
+ * do this, typically with of-platdata
+ *
+ * @dev: SPI-flash device to probe
+ * @return 0 if OK, -ve on error
+ */
+int spi_flash_std_probe(struct udevice *dev);
+
 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
                           unsigned int max_hz, unsigned int spi_mode,
                           struct udevice **devp);