diff options
Diffstat (limited to 'plat/hikey/drivers/sp804_timer.c')
| -rw-r--r-- | plat/hikey/drivers/sp804_timer.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/plat/hikey/drivers/sp804_timer.c b/plat/hikey/drivers/sp804_timer.c deleted file mode 100644 index 269bf1c6..00000000 --- a/plat/hikey/drivers/sp804_timer.c +++ /dev/null @@ -1,120 +0,0 @@ -/* - * Copyright (c) 2014-2015, Linaro Ltd and Contributors. All rights reserved. - * Copyright (c) 2014-2015, Hisilicon Ltd and Contributors. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * Neither the name of ARM nor the names of its contributors may be used - * to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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. - */ - -#include <console.h> -#include <debug.h> -#include <errno.h> -#include <hi6220.h> -#include <mmio.h> -#include <sp804_timer.h> - -/* Init dual timer0 (TIMER00 & TIMER01) */ -void hi6220_timer_init(void) -{ - unsigned int data; - - /* select 32KHz as the clock of dual timer0 */ - /* FIXME: But I find that it's 19.2MHz, not 32KHz. */ - data = mmio_read_32(AO_SC_TIMER_EN0); - while (data & 3) { - data &= ~3; - data |= 3 << 16; - mmio_write_32(AO_SC_TIMER_EN0, data); - data = mmio_read_32(AO_SC_TIMER_EN0); - } - /* enable the pclk of dual timer0 */ - data = mmio_read_32(AO_SC_PERIPH_CLKSTAT4); - while (!(data & PCLK_TIMER1) || !(data & PCLK_TIMER0)) { - mmio_write_32(AO_SC_PERIPH_CLKEN4, PCLK_TIMER1 | PCLK_TIMER0); - data = mmio_read_32(AO_SC_PERIPH_CLKSTAT4); - } - /* reset dual timer0 */ - data = mmio_read_32(AO_SC_PERIPH_RSTSTAT4); - mmio_write_32(AO_SC_PERIPH_RSTEN4, PCLK_TIMER1 | PCLK_TIMER0); - do { - data = mmio_read_32(AO_SC_PERIPH_RSTSTAT4); - } while (!(data & PCLK_TIMER1) || !(data & PCLK_TIMER0)); - /* unreset dual timer0 */ - mmio_write_32(AO_SC_PERIPH_RSTDIS4, PCLK_TIMER1 | PCLK_TIMER0); - do { - data = mmio_read_32(AO_SC_PERIPH_RSTSTAT4); - } while ((data & PCLK_TIMER1) || (data & PCLK_TIMER0)); - - /* disable timer00 */ - mmio_write_32(TIMER00_CONTROL, 0); - mmio_write_32(TIMER00_LOAD, 0xffffffff); - /* free running */ - mmio_write_32(TIMER00_CONTROL, 0x82); -} - -static unsigned int get_timer_value(void) -{ - return mmio_read_32(TIMER00_VALUE); -} - -void udelay(int us) -{ - unsigned int start, cnt, delta, delta_us; - - if (us <= 0) - us = 1; - /* counter is decreasing */ - start = get_timer_value(); - do { - cnt = get_timer_value(); - if (cnt > start) { - delta = 0xffffffff - cnt; - delta += start; - } else - delta = start - cnt; - delta_us = (delta * 10) / 192; - } while (delta_us < us); -} - -void mdelay(int ms) -{ - unsigned int start, cnt, delta, delta_ms; - - if (ms <= 0) - ms = 1; - - /* counter is decreasing */ - start = get_timer_value(); - do { - cnt = get_timer_value(); - if (cnt > start) { - delta = 0xffffffff - cnt; - delta += start; - } else - delta = start - cnt; - delta_ms = delta / 19200; - } while (delta_ms < ms); -} |