Add quad SPI support for Vybrid

Signed-off-by: TsiChung Liew <tsicliew@gmail.com>

2 files changed, 134 insertions, 0 deletions

diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index c967d87834..c3746b035c 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -40,6 +40,7 @@ COBJS-$(CONFIG_MXC_SPI) += mxc_spi.o
 COBJS-$(CONFIG_MXS_SPI) += mxs_spi.o
 COBJS-$(CONFIG_OC_TINY_SPI) += oc_tiny_spi.o
 COBJS-$(CONFIG_OMAP3_SPI) += omap3_spi.o
+COBJS-$(CONFIG_QUAD_SPI) += quad_spi.o
 COBJS-$(CONFIG_SOFT_SPI) += soft_spi.o
 COBJS-$(CONFIG_SH_SPI) += sh_spi.o
 COBJS-$(CONFIG_FSL_ESPI) += fsl_espi.o
diff --git a/drivers/spi/quad_spi.c b/drivers/spi/quad_spi.c
new file mode 100644
index 0000000000..7afeacf72e
--- /dev/null
+++ b/drivers/spi/quad_spi.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <spi.h>
+#include <malloc.h>
+#include <asm/arch/quadspi.h>
+
+struct quadspi_slave {
+	struct spi_slave slave;
+	uint baudrate;
+	int charbit;
+};
+
+int quadspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
+	       void *din, ulong flags);
+struct spi_slave *quadspi_setup_slave(struct quadspi_slave *slave, uint mode);
+void quadspi_init(void);
+void quadspi_tx(u32 ctrl, u16 data);
+u16 quadspi_rx(void);
+
+extern void setup_iomux_quadspi(void);
+extern int quadspi_claim_bus(uint bus, uint cs);
+extern void quadspi_release_bus(uint bus, uint cs);
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_QUAD_SPI
+void quadspi_init(void)
+{
+	setup_iomux_quadspi();	/* port configuration */
+}
+
+void quadspi_tx(u32 ctrl, u16 data)
+{
+}
+
+u16 quadspi_rx(void)
+{
+	return 0;
+}
+
+int quadspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
+	       void *din, ulong flags)
+{
+	return 0;
+}
+
+struct spi_slave *quadspi_setup_slave(struct quadspi_slave *slave, uint mode)
+{
+	return 0;
+}
+#endif				/* CONFIG_QUAD_SPI */
+
+#ifdef CONFIG_CMD_SPI
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+	return 0;
+}
+
+void spi_init_f(void)
+{
+}
+
+void spi_init_r(void)
+{
+}
+
+void spi_init(void)
+{
+	quadspi_init();
+}
+
+struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
+				  unsigned int max_hz, unsigned int mode)
+{
+	struct quadspi_slave *slave;
+
+	if (!spi_cs_is_valid(bus, cs))
+		return NULL;
+
+	slave = malloc(sizeof(struct quadspi_slave));
+	if (!slave)
+		return NULL;
+
+	slave->slave.bus = bus;
+	slave->slave.cs = cs;
+	slave->baudrate = max_hz;
+
+	/* specific setup */
+	return quadspi_setup_slave(slave, mode);
+}
+
+void spi_free_slave(struct spi_slave *slave)
+{
+	free(slave);
+}
+
+int spi_claim_bus(struct spi_slave *slave)
+{
+	return quadspi_claim_bus(slave->bus, slave->cs);
+}
+
+void spi_release_bus(struct spi_slave *slave)
+{
+	quadspi_release_bus(slave->bus, slave->cs);
+}
+
+int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
+	     void *din, unsigned long flags)
+{
+	return quadspi_xfer(slave, bitlen, dout, din, flags);
+}
+#endif				/* CONFIG_CMD_SPI */