| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20240920075306.704665-3-sergio.paracuellos@gmail.com>
Date: Fri, 20 Sep 2024 09:53:06 +0200
From: Sergio Paracuellos <sergio.paracuellos@...il.com>
To: linux-mips@...r.kernel.org
Cc: daniel.lezcano@...aro.org,
tglx@...utronix.de,
tsbogend@...ha.franken.de,
john@...ozen.org,
linux-kernel@...r.kernel.org,
yangshiji66@...look.com
Subject: [PATCH 2/2] MIPS: ralink: remove System Tick Counter driver
This driver has been moved into a more accurate place in the kernel tree
in 'drivers/clocksource' directory as 'timer-ralink.c'. Hence, remove it
from here so we can reduce architecture code folder.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
---
arch/mips/ralink/Kconfig | 7 --
arch/mips/ralink/Makefile | 2 -
arch/mips/ralink/cevt-rt3352.c | 153 ---------------------------------
3 files changed, 162 deletions(-)
delete mode 100644 arch/mips/ralink/cevt-rt3352.c
diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
index 08c012a2591f..910d059ec70b 100644
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -1,13 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
if RALINK
-config CLKEVT_RT3352
- bool
- depends on SOC_RT305X || SOC_MT7620
- default y
- select TIMER_OF
- select CLKSRC_MMIO
-
config RALINK_ILL_ACC
bool
depends on SOC_RT305X
diff --git a/arch/mips/ralink/Makefile b/arch/mips/ralink/Makefile
index 26fabbdea1f1..0c109eae1953 100644
--- a/arch/mips/ralink/Makefile
+++ b/arch/mips/ralink/Makefile
@@ -10,8 +10,6 @@ ifndef CONFIG_MIPS_GIC
obj-y += clk.o timer.o
endif
-obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o
-
obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o
obj-$(CONFIG_IRQ_INTC) += irq.o
diff --git a/arch/mips/ralink/cevt-rt3352.c b/arch/mips/ralink/cevt-rt3352.c
deleted file mode 100644
index 269d4877d120..000000000000
--- a/arch/mips/ralink/cevt-rt3352.c
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2013 by John Crispin <john@...ozen.org>
- */
-
-#include <linux/clockchips.h>
-#include <linux/clocksource.h>
-#include <linux/interrupt.h>
-#include <linux/reset.h>
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
-#include <linux/of_address.h>
-
-#include <asm/mach-ralink/ralink_regs.h>
-
-#define SYSTICK_FREQ (50 * 1000)
-
-#define SYSTICK_CONFIG 0x00
-#define SYSTICK_COMPARE 0x04
-#define SYSTICK_COUNT 0x08
-
-/* route systick irq to mips irq 7 instead of the r4k-timer */
-#define CFG_EXT_STK_EN 0x2
-/* enable the counter */
-#define CFG_CNT_EN 0x1
-
-struct systick_device {
- void __iomem *membase;
- struct clock_event_device dev;
- int irq_requested;
- int freq_scale;
-};
-
-static int systick_set_oneshot(struct clock_event_device *evt);
-static int systick_shutdown(struct clock_event_device *evt);
-
-static int systick_next_event(unsigned long delta,
- struct clock_event_device *evt)
-{
- struct systick_device *sdev;
- u32 count;
-
- sdev = container_of(evt, struct systick_device, dev);
- count = ioread32(sdev->membase + SYSTICK_COUNT);
- count = (count + delta) % SYSTICK_FREQ;
- iowrite32(count, sdev->membase + SYSTICK_COMPARE);
-
- return 0;
-}
-
-static void systick_event_handler(struct clock_event_device *dev)
-{
- /* noting to do here */
-}
-
-static irqreturn_t systick_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *dev = (struct clock_event_device *) dev_id;
-
- dev->event_handler(dev);
-
- return IRQ_HANDLED;
-}
-
-static struct systick_device systick = {
- .dev = {
- /*
- * cevt-r4k uses 300, make sure systick
- * gets used if available
- */
- .rating = 310,
- .features = CLOCK_EVT_FEAT_ONESHOT,
- .set_next_event = systick_next_event,
- .set_state_shutdown = systick_shutdown,
- .set_state_oneshot = systick_set_oneshot,
- .event_handler = systick_event_handler,
- },
-};
-
-static int systick_shutdown(struct clock_event_device *evt)
-{
- struct systick_device *sdev;
-
- sdev = container_of(evt, struct systick_device, dev);
-
- if (sdev->irq_requested)
- free_irq(systick.dev.irq, &systick.dev);
- sdev->irq_requested = 0;
- iowrite32(0, systick.membase + SYSTICK_CONFIG);
-
- return 0;
-}
-
-static int systick_set_oneshot(struct clock_event_device *evt)
-{
- const char *name = systick.dev.name;
- struct systick_device *sdev;
- int irq = systick.dev.irq;
-
- sdev = container_of(evt, struct systick_device, dev);
-
- if (!sdev->irq_requested) {
- if (request_irq(irq, systick_interrupt,
- IRQF_PERCPU | IRQF_TIMER, name, &systick.dev))
- pr_err("Failed to request irq %d (%s)\n", irq, name);
- }
- sdev->irq_requested = 1;
- iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN,
- systick.membase + SYSTICK_CONFIG);
-
- return 0;
-}
-
-static int __init ralink_systick_init(struct device_node *np)
-{
- int ret;
-
- systick.membase = of_iomap(np, 0);
- if (!systick.membase)
- return -ENXIO;
-
- systick.dev.name = np->name;
- clockevents_calc_mult_shift(&systick.dev, SYSTICK_FREQ, 60);
- systick.dev.max_delta_ns = clockevent_delta2ns(0x7fff, &systick.dev);
- systick.dev.max_delta_ticks = 0x7fff;
- systick.dev.min_delta_ns = clockevent_delta2ns(0x3, &systick.dev);
- systick.dev.min_delta_ticks = 0x3;
- systick.dev.irq = irq_of_parse_and_map(np, 0);
- if (!systick.dev.irq) {
- pr_err("%pOFn: request_irq failed", np);
- return -EINVAL;
- }
-
- ret = clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name,
- SYSTICK_FREQ, 301, 16,
- clocksource_mmio_readl_up);
- if (ret)
- return ret;
-
- clockevents_register_device(&systick.dev);
-
- pr_info("%pOFn: running - mult: %d, shift: %d\n",
- np, systick.dev.mult, systick.dev.shift);
-
- return 0;
-}
-
-TIMER_OF_DECLARE(systick, "ralink,cevt-systick", ralink_systick_init);
--
2.25.1
Powered by blists - more mailing lists