From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: [PATCH v2 03/12] clocksource: sti: Provide 'use timer as sched clock' capability Date: Tue, 12 May 2015 13:58:11 +0100 Message-ID: <1431435500-22899-4-git-send-email-lee.jones@linaro.org> References: <1431435500-22899-1-git-send-email-lee.jones@linaro.org> Return-path: In-Reply-To: <1431435500-22899-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, daniel.lezcano@linaro.org, tglx@linutronix.de, wim@iguana.be, a.zummo@towertech.it, linux-watchdog@vger.kernel.org, rtc-linux@googlegroups.com, linux@roeck-us.net Cc: kernel@stlinux.com, Lee Jones List-Id: devicetree@vger.kernel.org Signed-off-by: Lee Jones --- drivers/clocksource/clksrc_st_lpc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/clocksource/clksrc_st_lpc.c b/drivers/clocksource/clksrc_st_lpc.c index 1ad1714..90f5bb8 100644 --- a/drivers/clocksource/clksrc_st_lpc.c +++ b/drivers/clocksource/clksrc_st_lpc.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -38,6 +39,11 @@ static void st_clksrc_reset(void) writel_relaxed(1, ddata.base + LPC_LPT_START_OFF); } +static u64 notrace st_clksrc_sched_clock_read(void) +{ + return (u64)readl_relaxed(ddata.base + LPC_LPT_LSB_OFF); +} + static int __init st_clksrc_init(void) { unsigned long rate; @@ -47,6 +53,8 @@ static int __init st_clksrc_init(void) rate = clk_get_rate(ddata.clk); + sched_clock_register(st_clksrc_sched_clock_read, 32, rate); + ret = clocksource_mmio_init(ddata.base + LPC_LPT_LSB_OFF, "clksrc-st-lpc", rate, 300, 32, clocksource_mmio_readl_up); -- 1.9.1