From: dsaxena@linaro•org (Deepak Saxena)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 02/12] ARM: at91: Remove LATCH and CLOCK_TICK_RATE dependency
Date: Thu, 4 Aug 2011 06:46:16 -0700 [thread overview]
Message-ID: <20110804134616.GC919@plexity.net> (raw)
In-Reply-To: <cover.1312455035.git.dsaxena@linaro.org>
As part of work to remove the global CLOCK_TICK_RATE symbol,
this patch defines a sub-arch local value for use by the
at91 code. Once all LATCH and CLOCK_TICK_RATE references
are removed, we will remove all the definitions across
sub-arches.
Signed-off-by: Deepak Saxena <dsaxena@linaro•org>
---
arch/arm/mach-at91/at91rm9200_time.c | 6 +-
arch/arm/mach-at91/include/mach/at91_st.h | 63 +++++++++++++++++++++++++++++
2 files changed, 66 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c
index 1dd69c8..61a6d0c 100644
--- a/arch/arm/mach-at91/at91rm9200_time.c
+++ b/arch/arm/mach-at91/at91rm9200_time.c
@@ -74,8 +74,8 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id)
if (sr & AT91_ST_PITS) {
u32 crtr = read_CRTR();
- while (((crtr - last_crtr) & AT91_ST_CRTV) >= LATCH) {
- last_crtr += LATCH;
+ while (((crtr - last_crtr) & AT91_ST_CRTV) >= AT91_TIMER_LATCH) {
+ last_crtr += AT91_TIMER_LATCH;
clkevt.event_handler(&clkevt);
}
return IRQ_HANDLED;
@@ -116,7 +116,7 @@ clkevt32k_mode(enum clock_event_mode mode, struct clock_event_device *dev)
case CLOCK_EVT_MODE_PERIODIC:
/* PIT for periodic irqs; fixed rate of 1/HZ */
irqmask = AT91_ST_PITS;
- at91_sys_write(AT91_ST_PIMR, LATCH);
+ at91_sys_write(AT91_ST_PIMR, AT91_TIMER_LATCH);
break;
case CLOCK_EVT_MODE_ONESHOT:
/* ALM for oneshot irqs, set by next_event()
diff --git a/arch/arm/mach-at91/include/mach/at91_st.h b/arch/arm/mach-at91/include/mach/at91_st.h
index 8847173..7d55a49 100644
--- a/arch/arm/mach-at91/include/mach/at91_st.h
+++ b/arch/arm/mach-at91/include/mach/at91_st.h
@@ -46,4 +46,67 @@
#define AT91_ST_CRTR (AT91_ST + 0x24) /* Current Real-time Register */
#define AT91_ST_CRTV (0xfffff << 0) /* Current Real-Time Value */
+#if defined(CONFIG_ARCH_AT91RM9200)
+
+#define AT91_TICK_RATE (AT91_SLOW_CLOCK)
+
+#elif defined(CONFIG_ARCH_AT91SAM9260)
+
+#if defined(CONFIG_MACH_USB_A9260) || defined(CONFIG_MACH_QIL_A9260)
+#define AT91SAM9_MASTER_CLOCK 90000000
+#else
+#define AT91SAM9_MASTER_CLOCK 99300000
+#endif
+
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91SAM9261)
+
+#define AT91SAM9_MASTER_CLOCK 99300000
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91SAM9G10)
+
+#define AT91SAM9_MASTER_CLOCK 133000000
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91SAM9263)
+
+#if defined(CONFIG_MACH_USB_A9263)
+#define AT91SAM9_MASTER_CLOCK 90000000
+#else
+#define AT91SAM9_MASTER_CLOCK 99959500
+#endif
+
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91SAM9RL)
+
+#define AT91SAM9_MASTER_CLOCK 100000000
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91SAM9G20)
+
+#define AT91SAM9_MASTER_CLOCK 132096000
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91SAM9G45)
+
+#define AT91SAM9_MASTER_CLOCK 133333333
+#define AT91_TICK_RATE (AT91SAM9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91CAP9)
+
+#define AT91CAP9_MASTER_CLOCK 100000000
+#define AT91_TICK_RATE (AT91CAP9_MASTER_CLOCK/16)
+
+#elif defined(CONFIG_ARCH_AT91X40)
+
+#define AT91X40_MASTER_CLOCK 40000000
+#define AT91_TICK_RATE (AT91X40_MASTER_CLOCK)
+
+#endif
+
+#define AT91_TIMER_LATCH ((AT91_TICK_RATE + HZ/2) / HZ)
+
#endif
--
1.7.4.1
next prev parent reply other threads:[~2011-08-04 13:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1312455035.git.dsaxena@linaro.org>
2011-08-04 13:44 ` [PATCH 01/12] ARM: Remove LATCH reference for time-acorn.c Deepak Saxena
2011-08-05 9:21 ` Russell King - ARM Linux
2011-08-05 9:23 ` Russell King - ARM Linux
2011-08-05 14:59 ` Deepak Saxena
2011-08-04 13:46 ` Deepak Saxena [this message]
2011-08-04 13:47 ` [PATCH 03/12] ARM: unicore32: Remove depency on LATCH Deepak Saxena
2011-08-04 13:56 ` Deepak Saxena
2011-08-04 13:49 ` [PATCH 04/12] ARM: clps711x: Remove LATCH and CLOCK_TICK_RATE dependency Deepak Saxena
2011-08-04 13:49 ` [PATCH 05/12] ARM: h720x: " Deepak Saxena
2011-08-04 13:50 ` [PATCH 06/12] ARM: IXP23xx: " Deepak Saxena
2011-08-04 14:03 ` Lennert Buytenhek
2011-08-04 13:50 ` [PATCH 07/12] ARM: IXP4x: " Deepak Saxena
2011-08-04 13:52 ` [PATCH 08/12] ARM: ks8695: " Deepak Saxena
2011-08-04 13:53 ` [PATCH 09/12] ARM: netx: " Deepak Saxena
2011-08-04 13:53 ` [PATCH 10/12] ARM: pnx4000: " Deepak Saxena
2011-08-04 13:53 ` [PATCH 11/12] ARM: sa1100: " Deepak Saxena
2011-08-04 13:54 ` [PATCH 12/12] ARM: Remove mach-*/include/mach/timex.h Deepak Saxena
2011-08-04 15:57 ` Linus Walleij
2011-08-04 17:52 ` H Hartley Sweeten
2011-08-04 18:14 ` H Hartley Sweeten
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110804134616.GC919@plexity.net \
--to=dsaxena@linaro$(echo .)org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox