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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2020 Intel Corporation
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/pm_runtime.h>
#include "ipu-isys.h"
#include "ipu-platform-regs.h"
#define IPU_ISYS_GPC_NUM 16
#ifndef CONFIG_PM
#define pm_runtime_get_sync(d) 0
#define pm_runtime_put(d) 0
#endif
struct ipu_isys_gpc {
bool enable;
unsigned int route;
unsigned int source;
unsigned int sense;
unsigned int gpcindex;
void *prit;
};
struct ipu_isys_gpcs {
bool gpc_enable;
struct ipu_isys_gpc gpc[IPU_ISYS_GPC_NUM];
void *prit;
};
static int ipu6_isys_gpc_global_enable_get(void *data, u64 *val)
{
struct ipu_isys_gpcs *isys_gpcs = data;
struct ipu_isys *isys = isys_gpcs->prit;
mutex_lock(&isys->mutex);
*val = isys_gpcs->gpc_enable;
mutex_unlock(&isys->mutex);
return 0;
}
static int ipu6_isys_gpc_global_enable_set(void *data, u64 val)
{
struct ipu_isys_gpcs *isys_gpcs = data;
struct ipu_isys *isys = isys_gpcs->prit;
void __iomem *base;
int i, ret;
if (val != 0 && val != 1)
return -EINVAL;
if (!isys || !isys->pdata || !isys->pdata->base)
return -EINVAL;
mutex_lock(&isys->mutex);
base = isys->pdata->base + IPU_ISYS_GPC_BASE;
ret = pm_runtime_get_sync(&isys->adev->dev);
if (ret < 0) {
pm_runtime_put(&isys->adev->dev);
mutex_unlock(&isys->mutex);
return ret;
}
if (!val) {
writel(0x0, base + IPU_ISYS_GPREG_TRACE_TIMER_RST);
writel(0x0, base + IPU_ISF_CDC_MMU_GPC_OVERALL_ENABLE);
writel(0xffff, base + IPU_ISF_CDC_MMU_GPC_SOFT_RESET);
isys_gpcs->gpc_enable = false;
for (i = 0; i < IPU_ISYS_GPC_NUM; i++) {
isys_gpcs->gpc[i].enable = 0;
isys_gpcs->gpc[i].sense = 0;
isys_gpcs->gpc[i].route = 0;
isys_gpcs->gpc[i].source = 0;
}
pm_runtime_mark_last_busy(&isys->adev->dev);
pm_runtime_put_autosuspend(&isys->adev->dev);
} else {
/*
* Set gpc reg and start all gpc here.
* RST free running local timer.
*/
writel(0x0, base + IPU_ISYS_GPREG_TRACE_TIMER_RST);
writel(0x1, base + IPU_ISYS_GPREG_TRACE_TIMER_RST);
for (i = 0; i < IPU_ISYS_GPC_NUM; i++) {
/* Enable */
writel(isys_gpcs->gpc[i].enable,
base + IPU_ISF_CDC_MMU_GPC_ENABLE0 + 4 * i);
/* Setting (route/source/sense) */
writel((isys_gpcs->gpc[i].sense
<< IPU_GPC_SENSE_OFFSET)
+ (isys_gpcs->gpc[i].route
<< IPU_GPC_ROUTE_OFFSET)
+ (isys_gpcs->gpc[i].source
<< IPU_GPC_SOURCE_OFFSET),
base + IPU_ISF_CDC_MMU_GPC_CNT_SEL0 + 4 * i);
}
/* Soft reset and Overall Enable. */
writel(0x0, base + IPU_ISF_CDC_MMU_GPC_OVERALL_ENABLE);
writel(0xffff, base + IPU_ISF_CDC_MMU_GPC_SOFT_RESET);
writel(0x1, base + IPU_ISF_CDC_MMU_GPC_OVERALL_ENABLE);
isys_gpcs->gpc_enable = true;
}
mutex_unlock(&isys->mutex);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(isys_gpc_globe_enable_fops,
ipu6_isys_gpc_global_enable_get,
ipu6_isys_gpc_global_enable_set, "%llu\n");
static int ipu6_isys_gpc_count_get(void *data, u64 *val)
{
struct ipu_isys_gpc *isys_gpc = data;
struct ipu_isys *isys = isys_gpc->prit;
void __iomem *base;
if (!isys || !isys->pdata || !isys->pdata->base)
return -EINVAL;
spin_lock(&isys->power_lock);
if (isys->power) {
base = isys->pdata->base + IPU_ISYS_GPC_BASE;
*val = readl(base + IPU_ISF_CDC_MMU_GPC_VALUE0
+ 4 * isys_gpc->gpcindex);
} else {
*val = 0;
}
spin_unlock(&isys->power_lock);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(isys_gpc_count_fops, ipu6_isys_gpc_count_get,
NULL, "%llu\n");
int ipu_isys_gpc_init_debugfs(struct ipu_isys *isys)
{
struct dentry *gpcdir;
struct dentry *dir;
struct dentry *file;
int i;
char gpcname[10];
struct ipu_isys_gpcs *isys_gpcs;
isys_gpcs = devm_kzalloc(&isys->adev->dev, sizeof(*isys_gpcs),
GFP_KERNEL);
if (!isys_gpcs)
return -ENOMEM;
gpcdir = debugfs_create_dir("gpcs", isys->debugfsdir);
if (IS_ERR(gpcdir))
return -ENOMEM;
isys_gpcs->prit = isys;
file = debugfs_create_file("enable", 0600, gpcdir, isys_gpcs,
&isys_gpc_globe_enable_fops);
if (IS_ERR(file))
goto err;
for (i = 0; i < IPU_ISYS_GPC_NUM; i++) {
sprintf(gpcname, "gpc%d", i);
dir = debugfs_create_dir(gpcname, gpcdir);
if (IS_ERR(dir))
goto err;
file = debugfs_create_bool("enable", 0600, dir,
&isys_gpcs->gpc[i].enable);
if (IS_ERR(file))
goto err;
debugfs_create_u32("source", 0600, dir,
&isys_gpcs->gpc[i].source);
debugfs_create_u32("route", 0600, dir,
&isys_gpcs->gpc[i].route);
debugfs_create_u32("sense", 0600, dir,
&isys_gpcs->gpc[i].sense);
isys_gpcs->gpc[i].gpcindex = i;
isys_gpcs->gpc[i].prit = isys;
file = debugfs_create_file("count", 0400, dir,
&isys_gpcs->gpc[i],
&isys_gpc_count_fops);
if (IS_ERR(file))
goto err;
}
return 0;
err:
debugfs_remove_recursive(gpcdir);
return -ENOMEM;
}
#endif
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