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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/m68k/include/asm/mcfqspi.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/m68k/include/asm/mcfqspi.h')
-rw-r--r--arch/m68k/include/asm/mcfqspi.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/mcfqspi.h b/arch/m68k/include/asm/mcfqspi.h
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+++ b/arch/m68k/include/asm/mcfqspi.h
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+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Definitions for Freescale Coldfire QSPI module
+ *
+ * Copyright 2010 Steven King <sfking@fdwdc.com>
+*/
+
+#ifndef mcfqspi_h
+#define mcfqspi_h
+
+/**
+ * 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 */