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Date: Fri, 3 Sep 2010 15:30:50 -0700
From: "Ira W. Snyder" <iws@...o.caltech.edu>
To: linuxppc-dev@...ts.ozlabs.org
Cc: linux-kernel@...r.kernel.org,
"Ira W. Snyder" <iws@...o.caltech.edu>
Subject: [PATCH RFCv1 1/3] fpga: add basic CARMA board support
This adds basic support for the system controller FPGA on the OVRO CARMA
board. This patch only adds infrastructure that will be used by later
drivers.
Signed-off-by: Ira W. Snyder <iws@...o.caltech.edu>
---
drivers/Kconfig | 2 +
drivers/Makefile | 1 +
drivers/fpga/Kconfig | 1 +
drivers/fpga/Makefile | 1 +
drivers/fpga/carma/Kconfig | 21 ++++++++++++
drivers/fpga/carma/Makefile | 1 +
drivers/fpga/carma/carma.c | 73 +++++++++++++++++++++++++++++++++++++++++++
drivers/fpga/carma/carma.h | 22 +++++++++++++
8 files changed, 122 insertions(+), 0 deletions(-)
create mode 100644 drivers/fpga/Kconfig
create mode 100644 drivers/fpga/Makefile
create mode 100644 drivers/fpga/carma/Kconfig
create mode 100644 drivers/fpga/carma/Makefile
create mode 100644 drivers/fpga/carma/carma.c
create mode 100644 drivers/fpga/carma/carma.h
diff --git a/drivers/Kconfig b/drivers/Kconfig
index a2b902f..8945ae6 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -111,4 +111,6 @@ source "drivers/xen/Kconfig"
source "drivers/staging/Kconfig"
source "drivers/platform/Kconfig"
+
+source "drivers/fpga/Kconfig"
endmenu
diff --git a/drivers/Makefile b/drivers/Makefile
index ae47344..c0b05de 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -115,3 +115,4 @@ obj-$(CONFIG_VLYNQ) += vlynq/
obj-$(CONFIG_STAGING) += staging/
obj-y += platform/
obj-y += ieee802154/
+obj-$(CONFIG_FPGA_DRIVERS) += fpga/
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
new file mode 100644
index 0000000..c85c2cc
--- /dev/null
+++ b/drivers/fpga/Kconfig
@@ -0,0 +1 @@
+source "drivers/fpga/carma/Kconfig"
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
new file mode 100644
index 0000000..409a5f9
--- /dev/null
+++ b/drivers/fpga/Makefile
@@ -0,0 +1 @@
+obj-y += carma/
diff --git a/drivers/fpga/carma/Kconfig b/drivers/fpga/carma/Kconfig
new file mode 100644
index 0000000..448885e
--- /dev/null
+++ b/drivers/fpga/carma/Kconfig
@@ -0,0 +1,21 @@
+
+menuconfig FPGA_DRIVERS
+ bool "FPGA Drivers"
+ default n
+ help
+ Say Y here to see options for devices used with custom FPGAs.
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if FPGA_DRIVERS
+
+config CARMA
+ tristate "CARMA System Controller FPGA support"
+ depends on FSL_SOC && PPC_83xx
+ default n
+ help
+ Say Y here to include basic support for the CARMA System Controller
+ FPGA. This option allows the other more advanced drivers to be built.
+
+endif # FPGA_DRIVERS
diff --git a/drivers/fpga/carma/Makefile b/drivers/fpga/carma/Makefile
new file mode 100644
index 0000000..90d0594
--- /dev/null
+++ b/drivers/fpga/carma/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_CARMA) += carma.o
diff --git a/drivers/fpga/carma/carma.c b/drivers/fpga/carma/carma.c
new file mode 100644
index 0000000..97549d2
--- /dev/null
+++ b/drivers/fpga/carma/carma.c
@@ -0,0 +1,73 @@
+/*
+ * CARMA Board Utility Driver
+ *
+ * Copyright (c) 2009-2010 Ira W. Snyder <iws@...o.caltech.edu>
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/err.h>
+
+#include "carma.h"
+
+static struct class *carma_class;
+static const char drv_name[] = "carma";
+
+/*
+ * CARMA Device Class Functions
+ */
+
+struct device *carma_device_create(struct device *parent, dev_t devno,
+ const char *fmt, ...)
+{
+ struct device *dev;
+ va_list vargs;
+
+ va_start(vargs, fmt);
+ dev = device_create_vargs(carma_class, parent, devno, NULL, fmt, vargs);
+ va_end(vargs);
+
+ return dev;
+}
+EXPORT_SYMBOL_GPL(carma_device_create);
+
+void carma_device_destroy(dev_t devno)
+{
+ device_destroy(carma_class, devno);
+}
+EXPORT_SYMBOL_GPL(carma_device_destroy);
+
+/*
+ * Module Init / Exit
+ */
+
+static int __init carma_init(void)
+{
+ /* Register the CARMA device class */
+ carma_class = class_create(THIS_MODULE, "carma");
+ if (IS_ERR(carma_class)) {
+ pr_err("%s: unable to create CARMA class\n", drv_name);
+ return PTR_ERR(carma_class);
+ }
+
+ return 0;
+}
+
+static void __exit carma_exit(void)
+{
+ class_destroy(carma_class);
+}
+
+MODULE_AUTHOR("Ira W. Snyder <iws@...o.caltech.edu>");
+MODULE_DESCRIPTION("CARMA Device Class Driver");
+MODULE_LICENSE("GPL");
+
+module_init(carma_init);
+module_exit(carma_exit);
diff --git a/drivers/fpga/carma/carma.h b/drivers/fpga/carma/carma.h
new file mode 100644
index 0000000..f556dc8
--- /dev/null
+++ b/drivers/fpga/carma/carma.h
@@ -0,0 +1,22 @@
+/*
+ * CARMA Board Utilities
+ *
+ * Copyright (c) 2009-2010 Ira W. Snyder <iws@...o.caltech.edu>
+ *
+ * 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.
+ */
+
+#ifndef CARMA_DEVICE_H
+#define CARMA_DEVICE_H
+
+#include <linux/device.h>
+
+struct device *carma_device_create(struct device *parent, dev_t devno,
+ const char *fmt, ...)
+ __attribute__((format(printf, 3, 4)));
+void carma_device_destroy(dev_t devno);
+
+#endif /* CARMA_DEVICE_H */
--
1.7.1
--
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