mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
e1a7566d09
A couple more clean-ups in the MIPS code. The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it was merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
*
|
|
* Copyright (C) 2013 John Crispin <john@phrozen.org>
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/mach-ralink/ralink_regs.h>
|
|
|
|
#define REG_ILL_ACC_ADDR 0x10
|
|
#define REG_ILL_ACC_TYPE 0x14
|
|
|
|
#define ILL_INT_STATUS BIT(31)
|
|
#define ILL_ACC_WRITE BIT(30)
|
|
#define ILL_ACC_LEN_M 0xff
|
|
#define ILL_ACC_OFF_M 0xf
|
|
#define ILL_ACC_OFF_S 16
|
|
#define ILL_ACC_ID_M 0x7
|
|
#define ILL_ACC_ID_S 8
|
|
|
|
#define DRV_NAME "ill_acc"
|
|
|
|
static const char * const ill_acc_ids[] = {
|
|
"cpu", "dma", "ppe", "pdma rx", "pdma tx", "pci/e", "wmac", "usb",
|
|
};
|
|
|
|
static irqreturn_t ill_acc_irq_handler(int irq, void *_priv)
|
|
{
|
|
struct device *dev = (struct device *) _priv;
|
|
u32 addr = rt_memc_r32(REG_ILL_ACC_ADDR);
|
|
u32 type = rt_memc_r32(REG_ILL_ACC_TYPE);
|
|
|
|
dev_err(dev, "illegal %s access from %s - addr:0x%08x offset:%d len:%d\n",
|
|
(type & ILL_ACC_WRITE) ? ("write") : ("read"),
|
|
ill_acc_ids[(type >> ILL_ACC_ID_S) & ILL_ACC_ID_M],
|
|
addr, (type >> ILL_ACC_OFF_S) & ILL_ACC_OFF_M,
|
|
type & ILL_ACC_LEN_M);
|
|
|
|
rt_memc_w32(ILL_INT_STATUS, REG_ILL_ACC_TYPE);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int __init ill_acc_of_setup(void)
|
|
{
|
|
struct platform_device *pdev;
|
|
struct device_node *np;
|
|
int irq;
|
|
|
|
/* somehow this driver breaks on RT5350 */
|
|
if (of_machine_is_compatible("ralink,rt5350-soc"))
|
|
return -EINVAL;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "ralink,rt3050-memc");
|
|
if (!np)
|
|
return -EINVAL;
|
|
|
|
pdev = of_find_device_by_node(np);
|
|
if (!pdev) {
|
|
pr_err("%pOFn: failed to lookup pdev\n", np);
|
|
of_node_put(np);
|
|
return -EINVAL;
|
|
}
|
|
|
|
irq = irq_of_parse_and_map(np, 0);
|
|
of_node_put(np);
|
|
if (!irq) {
|
|
dev_err(&pdev->dev, "failed to get irq\n");
|
|
put_device(&pdev->dev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (request_irq(irq, ill_acc_irq_handler, 0, "ill_acc", &pdev->dev)) {
|
|
dev_err(&pdev->dev, "failed to request irq\n");
|
|
put_device(&pdev->dev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
rt_memc_w32(ILL_INT_STATUS, REG_ILL_ACC_TYPE);
|
|
|
|
dev_info(&pdev->dev, "irq registered\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(ill_acc_of_setup);
|