+/**
+ * of_gpio_spi_cs_get_count() - special GPIO counting for SPI
+ * Some elder GPIO controllers need special quirks. Currently we handle
+ * the Freescale GPIO controller with bindings that doesn't use the
+ * established "cs-gpios" for chip selects but instead rely on
+ * "gpios" for the chip select lines. If we detect this, we redirect
+ * the counting of "cs-gpios" to count "gpios" transparent to the
+ * driver.
+ */
+static int of_gpio_spi_cs_get_count(struct device *dev, const char *con_id)
+{
+ struct device_node *np = dev->of_node;
+
+ if (!IS_ENABLED(CONFIG_SPI_MASTER))
+ return 0;
+ if (!con_id || strcmp(con_id, "cs"))
+ return 0;
+ if (!of_device_is_compatible(np, "fsl,spi") &&
+ !of_device_is_compatible(np, "aeroflexgaisler,spictrl"))
+ return 0;
+ return of_gpio_named_count(np, "gpios");
+}
+