m68knommu: Coldfire QSPI platform support
Since Grant has added the coldfire-qspi driver to next-spi, here is the
platform support for the parts that have qspi hardware. This sets up
gpio to do the spi chip select using the default chip select pins; it should
be trivial for boards that require different or additional spi chip selects to
use other gpios as needed.
Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
diff --git a/arch/m68k/include/asm/mcfqspi.h b/arch/m68k/include/asm/mcfqspi.h
new file mode 100644
index 0000000..39d90d5
--- /dev/null
+++ b/arch/m68k/include/asm/mcfqspi.h
@@ -0,0 +1,64 @@
+/*
+ * Definitions for Freescale Coldfire QSPI module
+ *
+ * Copyright 2010 Steven King <sfking@fdwdc.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+*/
+
+#ifndef mcfqspi_h
+#define mcfqspi_h
+
+#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
+#define MCFQSPI_IOBASE (MCF_IPSBAR + 0x340)
+#elif defined(CONFIG_M5249)
+#define MCFQSPI_IOBASE (MCF_MBAR + 0x300)
+#elif defined(CONFIG_M520x) || defined(CONFIG_M532x)
+#define MCFQSPI_IOBASE 0xFC058000
+#endif
+#define MCFQSPI_IOSIZE 0x40
+
+/**
+ * struct mcfqspi_cs_control - chip select control for the coldfire qspi driver
+ * @setup: setup the control; allocate gpio's, etc. May be NULL.
+ * @teardown: finish with the control; free gpio's, etc. May be NULL.
+ * @select: output the signals to select the device. Can not be NULL.
+ * @deselect: output the signals to deselect the device. Can not be NULL.
+ *
+ * The QSPI module has 4 hardware chip selects. We don't use them. Instead
+ * platforms are required to supply a mcfqspi_cs_control as a part of the
+ * platform data for each QSPI master controller. Only the select and
+ * deselect functions are required.
+*/
+struct mcfqspi_cs_control {
+ int (*setup)(struct mcfqspi_cs_control *);
+ void (*teardown)(struct mcfqspi_cs_control *);
+ void (*select)(struct mcfqspi_cs_control *, u8, bool);
+ void (*deselect)(struct mcfqspi_cs_control *, u8, bool);
+};
+
+/**
+ * struct mcfqspi_platform_data - platform data for the coldfire qspi driver
+ * @bus_num: board specific identifier for this qspi driver.
+ * @num_chipselects: number of chip selects supported by this qspi driver.
+ * @cs_control: platform dependent chip select control.
+*/
+struct mcfqspi_platform_data {
+ s16 bus_num;
+ u16 num_chipselect;
+ struct mcfqspi_cs_control *cs_control;
+};
+
+#endif /* mcfqspi_h */