Commit 55e331cf authored by Florian Fainelli's avatar Florian Fainelli Committed by Linus Torvalds

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: default avatarEugene Konev <ejka@imfi.kspu.ru>
Signed-off-by: default avatarFlorian 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f324edc8
......@@ -6281,6 +6281,14 @@ F: drivers/net/macvlan.c
F: include/linux/if_*vlan.h
F: net/8021q/
VLYNQ BUS
P: Florian Fainelli
M: florian@openwrt.org
L: openwrt-devel@lists.openwrt.org
S: Maintained
F: drivers/vlynq/vlynq.c
F: include/linux/vlynq.h
VOLTAGE AND CURRENT REGULATOR FRAMEWORK
P: Liam Girdwood
M: lrg@slimlogic.co.uk
......
......@@ -104,6 +104,8 @@ source "drivers/auxdisplay/Kconfig"
source "drivers/uio/Kconfig"
source "drivers/vlynq/Kconfig"
source "drivers/xen/Kconfig"
source "drivers/staging/Kconfig"
......
......@@ -105,6 +105,7 @@ obj-$(CONFIG_PPC_PS3) += ps3/
obj-$(CONFIG_OF) += of/
obj-$(CONFIG_SSB) += ssb/
obj-$(CONFIG_VIRTIO) += virtio/
obj-$(CONFIG_VLYNQ) += vlynq/
obj-$(CONFIG_STAGING) += staging/
obj-y += platform/
obj-y += ieee802154/
menu "TI VLYNQ"
config VLYNQ
bool "TI VLYNQ bus support"
depends on AR7 && EXPERIMENTAL
help
Support for Texas Instruments(R) VLYNQ bus.
The VLYNQ bus is a high-speed, serial and packetized
data bus which allows external peripherals of a SoC
to appear into the system's main memory.
If unsure, say N
config VLYNQ_DEBUG
bool "VLYNQ bus debug"
depends on VLYNQ && KERNEL_DEBUG
help
Turn on VLYNQ bus debugging.
endmenu
#
# Makefile for kernel vlynq drivers
#
obj-$(CONFIG_VLYNQ) += vlynq.o
This diff is collapsed.
/*
* 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__ */
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