X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fspi%2Fspi.c;h=7d81fbd7f8f52c31dd9503241e721c9ec8ce6bd8;hb=41bbb8b333a6977cd28d31c58a5a209001ce5056;hp=ea39d1a1eea628fe54a8cd92dd05f23e34ea92fc;hpb=5b9c79a81db80c3f9e50c77477957cd803429af8;p=oweals%2Fu-boot.git

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index ea39d1a1ee..7d81fbd7f8 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -5,9 +5,22 @@
  */
 
 #include <common.h>
+#include <fdtdec.h>
 #include <malloc.h>
 #include <spi.h>
 
+int spi_set_wordlen(struct spi_slave *slave, unsigned int wordlen)
+{
+	if (wordlen == 0 || wordlen > 32) {
+		printf("spi: invalid wordlen %d\n", wordlen);
+		return -1;
+	}
+
+	slave->wordlen = wordlen;
+
+	return 0;
+}
+
 void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
 			 unsigned int cs)
 {
@@ -20,7 +33,28 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
 		slave = (struct spi_slave *)(ptr + offset);
 		slave->bus = bus;
 		slave->cs = cs;
+		slave->wordlen = SPI_DEFAULT_WORDLEN;
 	}
 
 	return ptr;
 }
+
+#ifdef CONFIG_OF_SPI
+struct spi_slave *spi_base_setup_slave_fdt(const void *blob, int busnum,
+					   int node)
+{
+	int cs, max_hz, mode = 0;
+
+	cs = fdtdec_get_int(blob, node, "reg", -1);
+	max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", 100000);
+	if (fdtdec_get_bool(blob, node, "spi-cpol"))
+		mode |= SPI_CPOL;
+	if (fdtdec_get_bool(blob, node, "spi-cpha"))
+		mode |= SPI_CPHA;
+	if (fdtdec_get_bool(blob, node, "spi-cs-high"))
+		mode |= SPI_CS_HIGH;
+	if (fdtdec_get_bool(blob, node, "spi-half-duplex"))
+		mode |= SPI_PREAMBLE;
+	return spi_setup_slave(busnum, cs, max_hz, mode);
+}
+#endif