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authorFlorian Fainelli <florian@openwrt.org>2009-06-16 15:33:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 19:47:52 -0700
commit55e331cf7ebe20665253770589cd9eb06048bf25 (patch)
tree4f64450d5839304fddd80733a703df2e518b9b24 /include/linux
parentf324edc85e5c1137e49e3b36a58cf436ab5b1fb3 (diff)
drivers: add support for the TI VLYNQ bus
Add support for the TI VLYNQ high-speed, serial and packetized bus. This bus allows external devices to be connected to the System-on-Chip and appear in the main system memory just like any memory mapped peripheral. It is widely used in TI's networking and multimedia SoC, including the AR7 SoC. Signed-off-by: Eugene Konev <ejka@imfi.kspu.ru> Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/vlynq.h161
1 files changed, 161 insertions, 0 deletions
diff --git a/include/linux/vlynq.h b/include/linux/vlynq.h
new file mode 100644
index 00000000000..8f6a95882b0
--- /dev/null
+++ b/include/linux/vlynq.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2006, 2007 Eugene Konev <ejka@openwrt.org>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __VLYNQ_H__
+#define __VLYNQ_H__
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#define VLYNQ_NUM_IRQS 32
+
+struct vlynq_mapping {
+ u32 size;
+ u32 offset;
+};
+
+enum vlynq_divisor {
+ vlynq_div_auto = 0,
+ vlynq_ldiv1,
+ vlynq_ldiv2,
+ vlynq_ldiv3,
+ vlynq_ldiv4,
+ vlynq_ldiv5,
+ vlynq_ldiv6,
+ vlynq_ldiv7,
+ vlynq_ldiv8,
+ vlynq_rdiv1,
+ vlynq_rdiv2,
+ vlynq_rdiv3,
+ vlynq_rdiv4,
+ vlynq_rdiv5,
+ vlynq_rdiv6,
+ vlynq_rdiv7,
+ vlynq_rdiv8,
+ vlynq_div_external
+};
+
+struct vlynq_device_id {
+ u32 id;
+ enum vlynq_divisor divisor;
+ unsigned long driver_data;
+};
+
+struct vlynq_regs;
+struct vlynq_device {
+ u32 id, dev_id;
+ int local_irq;
+ int remote_irq;
+ enum vlynq_divisor divisor;
+ u32 regs_start, regs_end;
+ u32 mem_start, mem_end;
+ u32 irq_start, irq_end;
+ int irq;
+ int enabled;
+ struct vlynq_regs *local;
+ struct vlynq_regs *remote;
+ struct device dev;
+};
+
+struct vlynq_driver {
+ char *name;
+ struct vlynq_device_id *id_table;
+ int (*probe)(struct vlynq_device *dev, struct vlynq_device_id *id);
+ void (*remove)(struct vlynq_device *dev);
+ struct device_driver driver;
+};
+
+struct plat_vlynq_ops {
+ int (*on)(struct vlynq_device *dev);
+ void (*off)(struct vlynq_device *dev);
+};
+
+static inline struct vlynq_driver *to_vlynq_driver(struct device_driver *drv)
+{
+ return container_of(drv, struct vlynq_driver, driver);
+}
+
+static inline struct vlynq_device *to_vlynq_device(struct device *device)
+{
+ return container_of(device, struct vlynq_device, dev);
+}
+
+extern struct bus_type vlynq_bus_type;
+
+extern int __vlynq_register_driver(struct vlynq_driver *driver,
+ struct module *owner);
+
+static inline int vlynq_register_driver(struct vlynq_driver *driver)
+{
+ return __vlynq_register_driver(driver, THIS_MODULE);
+}
+
+static inline void *vlynq_get_drvdata(struct vlynq_device *dev)
+{
+ return dev_get_drvdata(&dev->dev);
+}
+
+static inline void vlynq_set_drvdata(struct vlynq_device *dev, void *data)
+{
+ dev_set_drvdata(&dev->dev, data);
+}
+
+static inline u32 vlynq_mem_start(struct vlynq_device *dev)
+{
+ return dev->mem_start;
+}
+
+static inline u32 vlynq_mem_end(struct vlynq_device *dev)
+{
+ return dev->mem_end;
+}
+
+static inline u32 vlynq_mem_len(struct vlynq_device *dev)
+{
+ return dev->mem_end - dev->mem_start + 1;
+}
+
+static inline int vlynq_virq_to_irq(struct vlynq_device *dev, int virq)
+{
+ int irq = dev->irq_start + virq;
+ if ((irq < dev->irq_start) || (irq > dev->irq_end))
+ return -EINVAL;
+
+ return irq;
+}
+
+static inline int vlynq_irq_to_virq(struct vlynq_device *dev, int irq)
+{
+ if ((irq < dev->irq_start) || (irq > dev->irq_end))
+ return -EINVAL;
+
+ return irq - dev->irq_start;
+}
+
+extern void vlynq_unregister_driver(struct vlynq_driver *driver);
+extern int vlynq_enable_device(struct vlynq_device *dev);
+extern void vlynq_disable_device(struct vlynq_device *dev);
+extern int vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
+ struct vlynq_mapping *mapping);
+extern int vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
+ struct vlynq_mapping *mapping);
+extern int vlynq_set_local_irq(struct vlynq_device *dev, int virq);
+extern int vlynq_set_remote_irq(struct vlynq_device *dev, int virq);
+
+#endif /* __VLYNQ_H__ */