From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wy0-f177.google.com ([74.125.82.177]) by canuck.infradead.org with esmtps (Exim 4.72 #1 (Red Hat Linux)) id 1PvHU8-0003Ml-Jx for barebox@lists.infradead.org; Thu, 03 Mar 2011 22:59:08 +0000 Received: by mail-wy0-f177.google.com with SMTP id 23so1675998wyf.36 for ; Thu, 03 Mar 2011 14:59:04 -0800 (PST) From: franck.jullien@gmail.com Date: Thu, 3 Mar 2011 23:58:26 +0100 Message-Id: <4d701d37.9009d80a.2cd3.5e7c@mx.google.com> In-Reply-To: References: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 12/54] Add arch/nios2/lib/clock.c To: barebox@lists.infradead.org From: Franck JULLIEN Add arch/nios2/lib/clock.c --- arch/nios2/lib/clock.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 57 insertions(+), 0 deletions(-) create mode 100644 arch/nios2/lib/clock.c diff --git a/arch/nios2/lib/clock.c b/arch/nios2/lib/clock.c new file mode 100644 index 0000000..dd08be7 --- /dev/null +++ b/arch/nios2/lib/clock.c @@ -0,0 +1,57 @@ +/* + * (C) Copyright 2011 - Franck JULLIEN + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include + +static nios_timer_t *timer = (nios_timer_t *) NIOS_SOPC_TIMER_BASE; + +static uint64_t nios_clocksource_read(void) +{ + timer->snapl = 0x55; /* Dummy value*/ + return (uint64_t)(~((((uint64_t)timer->snaph) << (uint64_t)16) + (uint64_t)timer->snapl)); +} + +static struct clocksource cs = { + .read = nios_clocksource_read, + .mask = CLOCKSOURCE_MASK(32), + .shift = 12, +}; + +static int clocksource_init (void) +{ + timer->control = 0; + timer->periodl = 0xFFFF; + timer->periodh = 0xFFFF; + timer->control = NIOS_TIMER_CONT | NIOS_TIMER_START; + + cs.mult = clocksource_hz2mult(NIOS_SOPC_TIMER_FREQ, cs.shift); + + init_clock(&cs); + + return 0; +} + +core_initcall(clocksource_init); + -- 1.7.3.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox