linux-kernel - [PATCH 2/4] timer: remove tango driver

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210120131559.1971359-3-arnd@kernel.org>
Date:   Wed, 20 Jan 2021 14:15:57 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Mans Rullgard <mans@...sr.com>
Subject: [PATCH 2/4] timer: remove tango driver

From: Arnd Bergmann <arnd@...db.de>

The tango platform is getting removed, so the driver is no
longer needed.

Cc: Marc Gonzalez <marc.w.gonzalez@...e.fr>
Cc: Mans Rullgard <mans@...sr.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/clocksource/Kconfig            |  8 ----
 drivers/clocksource/Makefile           |  1 -
 drivers/clocksource/timer-tango-xtal.c | 57 --------------------------
 3 files changed, 66 deletions(-)
 delete mode 100644 drivers/clocksource/timer-tango-xtal.c

diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 824a0f6b77d4..1feadd067677 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -560,14 +560,6 @@ config CLKSRC_MIPS_GIC
 	select CLOCKSOURCE_WATCHDOG
 	select TIMER_OF
 
-config CLKSRC_TANGO_XTAL
-	bool "Clocksource for Tango SoC" if COMPILE_TEST
-	depends on ARM
-	select TIMER_OF
-	select CLKSRC_MMIO
-	help
-	  This enables the clocksource for Tango SoC.
-
 config CLKSRC_PXA
 	bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
 	depends on HAS_IOMEM
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 41c154478a1a..1089f2ed8560 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -72,7 +72,6 @@ obj-$(CONFIG_KEYSTONE_TIMER)		+= timer-keystone.o
 obj-$(CONFIG_INTEGRATOR_AP_TIMER)	+= timer-integrator-ap.o
 obj-$(CONFIG_CLKSRC_VERSATILE)		+= timer-versatile.o
 obj-$(CONFIG_CLKSRC_MIPS_GIC)		+= mips-gic-timer.o
-obj-$(CONFIG_CLKSRC_TANGO_XTAL)		+= timer-tango-xtal.o
 obj-$(CONFIG_CLKSRC_IMX_GPT)		+= timer-imx-gpt.o
 obj-$(CONFIG_CLKSRC_IMX_TPM)		+= timer-imx-tpm.o
 obj-$(CONFIG_TIMER_IMX_SYS_CTR)		+= timer-imx-sysctr.o
diff --git a/drivers/clocksource/timer-tango-xtal.c b/drivers/clocksource/timer-tango-xtal.c
deleted file mode 100644
index 3f94e454ef99..000000000000
--- a/drivers/clocksource/timer-tango-xtal.c
+++ /dev/null
@@ -1,57 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/clocksource.h>
-#include <linux/sched_clock.h>
-#include <linux/of_address.h>
-#include <linux/printk.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/clk.h>
-
-static void __iomem *xtal_in_cnt;
-static struct delay_timer delay_timer;
-
-static unsigned long notrace read_xtal_counter(void)
-{
-	return readl_relaxed(xtal_in_cnt);
-}
-
-static u64 notrace read_sched_clock(void)
-{
-	return read_xtal_counter();
-}
-
-static int __init tango_clocksource_init(struct device_node *np)
-{
-	struct clk *clk;
-	int xtal_freq, ret;
-
-	xtal_in_cnt = of_iomap(np, 0);
-	if (xtal_in_cnt == NULL) {
-		pr_err("%pOF: invalid address\n", np);
-		return -ENXIO;
-	}
-
-	clk = of_clk_get(np, 0);
-	if (IS_ERR(clk)) {
-		pr_err("%pOF: invalid clock\n", np);
-		return PTR_ERR(clk);
-	}
-
-	xtal_freq = clk_get_rate(clk);
-	delay_timer.freq = xtal_freq;
-	delay_timer.read_current_timer = read_xtal_counter;
-
-	ret = clocksource_mmio_init(xtal_in_cnt, "tango-xtal", xtal_freq, 350,
-				    32, clocksource_mmio_readl_up);
-	if (ret) {
-		pr_err("%pOF: registration failed\n", np);
-		return ret;
-	}
-
-	sched_clock_register(read_sched_clock, 32, xtal_freq);
-	register_current_timer_delay(&delay_timer);
-
-	return 0;
-}
-
-TIMER_OF_DECLARE(tango, "sigma,tick-counter", tango_clocksource_init);
-- 
2.29.2