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clocksource/drivers/ralink: Add Ralink System Tick Counter driver

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System Tick Counter is present on Ralink SoCs RT3352 and MT7620. This
driver has been in 'arch/mips/ralink' directory since the beggining of
Ralink architecture support. However, it can be moved into a more proper
place in 'drivers/clocksource'. Hence add it here adding also support for
compile test targets and reducing LOC in architecture code folder.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20241028203643.191268-2-sergio.paracuellos@gmail.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Sergio Paracuellos 2024-10-28 21:36:43 +01:00 committed by Daniel Lezcano
parent dfe101bcad
commit cd5375610b
5 changed files with 14 additions and 16 deletions
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7
arch/mips/ralink/Kconfig
View File

@ -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

2
arch/mips/ralink/Makefile
View File

@ -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

9
drivers/clocksource/Kconfig
View File

@ -754,4 +754,13 @@ config EP93XX_TIMER
Enables support for the Cirrus Logic timer block
EP93XX.
config RALINK_TIMER
bool "Ralink System Tick Counter"
depends on SOC_RT305X || SOC_MT7620 || COMPILE_TEST
select CLKSRC_MMIO
select TIMER_OF
help
Enables support for system tick counter present on
Ralink SoCs RT3352 and MT7620.
endmenu

1
drivers/clocksource/Makefile
View File

@ -91,3 +91,4 @@ obj-$(CONFIG_GOLDFISH_TIMER) += timer-goldfish.o
obj-$(CONFIG_GXP_TIMER) += timer-gxp.o
obj-$(CONFIG_CLKSRC_LOONGSON1_PWM) += timer-loongson1-pwm.o
obj-$(CONFIG_EP93XX_TIMER) += timer-ep93xx.o
obj-$(CONFIG_RALINK_TIMER) += timer-ralink.o

11
arch/mips/ralink/cevt-rt3352.c → drivers/clocksource/timer-ralink.c
View File

@ -1,7 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
* 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.
* Ralink System Tick Counter driver present on RT3352 and MT7620 SoCs.
*
* Copyright (C) 2013 by John Crispin <john@phrozen.org>
*/
@ -16,8 +15,6 @@
#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
@ -40,7 +37,7 @@ 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 clock_event_device *evt)
{
struct systick_device *sdev;
u32 count;
@ -60,7 +57,7 @@ static void systick_event_handler(struct clock_event_device *dev)
static irqreturn_t systick_interrupt(int irq, void *dev_id)
{
struct clock_event_device *dev = (struct clock_event_device *) dev_id;
struct clock_event_device *dev = (struct clock_event_device *)dev_id;
dev->event_handler(dev);