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path: root/arch/arm/cpu/armv7/s5p-common/timer.c
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* Coding Style cleanup: remove trailing white spaceWolfgang Denk2013-10-14-1/+1
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* exynos: Avoid function instrumentation for microsecond timerSimon Glass2013-06-26-1/+1
| | | | | | | | | | For tracing to work it has to be able to access the microsecond timer without causing a recursive call to the function entry/exit handlers. Add attributes to the relevant functions to support this. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* exynos: Correct use of 64-bit divisionSimon Glass2013-04-17-1/+6
| | | | | | | | | | | | | The current code is causing errors like this on my toolchains: /usr/x86_64-pc-linux-gnu/armv7a-cros-linux-gnueabi/binutils-bin/2.22/ ld.bfd.real: failed to merge target specific data of file /usr/lib/gcc/ armv7a-cros-linux-gnueabi/4.7.x-google/libgcc.a(_divdi3.o) Use do_div() to avoid this. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* Exynos: Avoid a divide by zero by specifying a non-zero period for pwm 4Gabe Black2013-04-01-1/+1
| | | | | | | | | | | | | | | | | The pwm_config function in the exynos pwm driver divides by its period period parameter. A function was calling pwm_config with a 0ns period and a 0ns duty cycle. That doesn't actually make any sense physically, and results in a divide by zero in the driver. This change changes the parameters to be a 100000ns period and duty cycle. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Build and boot U-boot with this patch, backlight works properly. Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* Exynos: Add timer_get_us functionChe-Liang Chiou2013-04-01-0/+15
| | | | | | | | | | | | | | | | | timer_get_us returns the time in microseconds since a certain reference point of history. However, it does not guarantee to return an accurate time after a long period; instead, it wraps around (that is, the reference point is reset to some other point of history) after some periods. The frequency of wrapping around is about an hour (or 2^32 microseconds). Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* Exynos: Change get_timer() to work correctlySimon Glass2013-04-01-62/+38
| | | | | | | | | | | | | | | | At present get_timer() does not return sane values. It should count up smoothly in milliscond intervals. We can change the PWM to count down at 1MHz, providing a resolution of 1us and a range of about an hour between required get_timer() calls. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* arm: Move lastinc to arch_global_dataSimon Glass2013-02-01-5/+5
| | | | | | Move this field into arch_global_data and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org>
* arm: Move tbl to arch_global_dataSimon Glass2013-02-01-4/+4
| | | | | | Move this field into arch_global_data and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org>
* arm/s5pxx: Fix get_timer_masked to get the time.Zhong Hongbo2012-09-01-4/+16
| | | | | | | | | | | In general, The get_timer_masked function get the system time, no the number of ticks. Such as the nand_wait_ready will use get_timer_masked to delay the operations. And change the system time to adopt to the CONFIG_SYS_HZ. Signed-off-by: Hongbo Zhong <bocui107@gmail.com> Tested-by: Jaehoon Chung<jh80.chung@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* Timer: Remove reset_timer() for non-Nios2 archesGraeme Russ2011-07-26-5/+0
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* Timer: Remove set_timer completelyGraeme Russ2011-07-26-5/+0
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* S5P: timer: replace bss variable by gdMinkyu Kang2011-03-27-15/+12
| | | | | | | | | | | | Use the global data instead of bss variable, replace as follow. count_value -> removed timestamp -> tbl lastdec -> lastinc Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Albert ARIBAUD <albert.aribaud@free.fr>
* S5P: timer: Use pwm functionsMinkyu Kang2011-03-27-44/+5
| | | | | | Use pwm functions for timer that is PWM timer 4. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* ARMV7: S5P: timer: get the count_value from register when call udelayMinkyu Kang2010-11-30-9/+9
| | | | | | | Because of count_value is set to tcnb4 register, should be get from this register when call udelay function. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* ARMV7: S5P: separate the peripheral clocksMinkyu Kang2010-08-30-2/+2
| | | | | | | | | | Because of peripheral devices can select clock sources, separate the peripheral clocks. (pwm, uart and so on) It just return the pclk at s5pc1xx SoC, but s5pc210 SoC must be calculated by own clock register setting. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* ARMV7: S5P: rename from s5pc1xx to s5pMinkyu Kang2010-08-23-8/+8
| | | | | | | | Because of these are common files around s5p Socs, rename from s5pc1xx to s5p. And getting cpu_id is SoC specific, so move to SoC's header file. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* ARMV7: S5P: make s5p-common for sharing the code between s5pc1xx and s5pc2xxMinkyu Kang2010-08-23-0/+192
This patch adds basic support for s5pc210. s5p-common will be used by all of s5p SoCs. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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