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author | Felix Fietkau <nbd@openwrt.org> | 2008-10-18 21:43:30 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2008-10-18 21:43:30 +0000 |
commit | 1e570a9288856bcd288a80115f2233c9c785706c (patch) | |
tree | 8491af08bde47e22f96c01e6f560206b3fd02a4a /target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/time.c | |
parent | 487c622ac0c37f3cd26add56df9081ea7caf3835 (diff) | |
download | mtk-20170518-1e570a9288856bcd288a80115f2233c9c785706c.zip mtk-20170518-1e570a9288856bcd288a80115f2233c9c785706c.tar.gz mtk-20170518-1e570a9288856bcd288a80115f2233c9c785706c.tar.bz2 |
change the way ./files* and the generic kernel files are applied. ./files now applies to *ALL* kernel versions, and is copied along with ./files-* - this gets rid of quite a bit of redundancy in the extra kernel drivers.
SVN-Revision: 13010
Diffstat (limited to 'target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/time.c')
-rw-r--r-- | target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/time.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/time.c b/target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/time.c new file mode 100644 index 0000000..62120eb --- /dev/null +++ b/target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/time.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/serial_reg.h> +#include <linux/interrupt.h> +#include <linux/ssb/ssb.h> +#include <asm/addrspace.h> +#include <asm/io.h> +#include <asm/time.h> + +extern struct ssb_bus ssb; + +void __init +bcm47xx_time_init(void) +{ + unsigned long hz; + + /* + * Use deterministic values for initial counter interrupt + * so that calibrate delay avoids encountering a counter wrap. + */ + write_c0_count(0); + write_c0_compare(0xffff); + + hz = ssb_cpu_clock(&ssb.mipscore) / 2; + if (!hz) + hz = 100000000; + + /* Set MIPS counter frequency for fixed_rate_gettimeoffset() */ + mips_hpt_frequency = hz; +} + +void __init +plat_timer_setup(struct irqaction *irq) +{ + /* Enable the timer interrupt */ + setup_irq(7, irq); +} |