From: Tony Lindgren <tony@atomide.com>
To: linux-omap@vger.kernel.org
Subject: [PATCH 1/5] ARM: OMAP2/3: Remove OMAP2_32KSYNCT_BASE
Date: Thu, 07 May 2009 13:42:36 -0700 [thread overview]
Message-ID: <20090507204235.7461.62238.stgit@localhost> (raw)
In-Reply-To: <20090507203552.7461.35051.stgit@localhost>
Use processor specific defines instead.
As an extra bonus, this patch fixes the problem of CONFIG_DEBUG_SPINLOCK
calling sched_clock before we have things initialized:
http://patchwork.kernel.org/patch/15810/
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
arch/arm/mach-omap2/sram242x.S | 4 +-
arch/arm/mach-omap2/sram243x.S | 4 +-
arch/arm/plat-omap/common.c | 69 ++++++++++++++++++++++++----
arch/arm/plat-omap/include/mach/omap24xx.h | 2 -
arch/arm/plat-omap/include/mach/omap34xx.h | 1
5 files changed, 62 insertions(+), 18 deletions(-)
diff --git a/arch/arm/mach-omap2/sram242x.S b/arch/arm/mach-omap2/sram242x.S
index af4bd34..cbb8930 100644
--- a/arch/arm/mach-omap2/sram242x.S
+++ b/arch/arm/mach-omap2/sram242x.S
@@ -128,7 +128,7 @@ omap242x_sdi_prcm_voltctrl:
prcm_mask_val:
.word 0xFFFF3FFC
omap242x_sdi_timer_32ksynct_cr:
- .word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
+ .word IO_ADDRESS(OMAP2420_32KSYNCT_BASE + 0x010)
ENTRY(omap242x_sram_ddr_init_sz)
.word . - omap242x_sram_ddr_init
@@ -224,7 +224,7 @@ omap242x_srs_prcm_voltctrl:
ddr_prcm_mask_val:
.word 0xFFFF3FFC
omap242x_srs_timer_32ksynct:
- .word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
+ .word IO_ADDRESS(OMAP2420_32KSYNCT_BASE + 0x010)
ENTRY(omap242x_sram_reprogram_sdrc_sz)
.word . - omap242x_sram_reprogram_sdrc
diff --git a/arch/arm/mach-omap2/sram243x.S b/arch/arm/mach-omap2/sram243x.S
index 84363e2..054b0f3 100644
--- a/arch/arm/mach-omap2/sram243x.S
+++ b/arch/arm/mach-omap2/sram243x.S
@@ -128,7 +128,7 @@ omap243x_sdi_prcm_voltctrl:
prcm_mask_val:
.word 0xFFFF3FFC
omap243x_sdi_timer_32ksynct_cr:
- .word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
+ .word IO_ADDRESS(OMAP2430_32KSYNCT_BASE + 0x010)
ENTRY(omap243x_sram_ddr_init_sz)
.word . - omap243x_sram_ddr_init
@@ -224,7 +224,7 @@ omap243x_srs_prcm_voltctrl:
ddr_prcm_mask_val:
.word 0xFFFF3FFC
omap243x_srs_timer_32ksynct:
- .word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
+ .word IO_ADDRESS(OMAP2430_32KSYNCT_BASE + 0x010)
ENTRY(omap243x_sram_reprogram_sdrc_sz)
.word . - omap243x_sram_reprogram_sdrc
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 433021f..e1add78 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -175,25 +175,61 @@ console_initcall(omap_add_serial_console);
* but systems won't necessarily want to spend resources that way.
*/
-#if defined(CONFIG_ARCH_OMAP16XX)
-#define TIMER_32K_SYNCHRONIZED 0xfffbc410
-#elif defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
-#define TIMER_32K_SYNCHRONIZED (OMAP2_32KSYNCT_BASE + 0x10)
-#endif
+#define OMAP16XX_TIMER_32K_SYNCHRONIZED 0xfffbc410
-#ifdef TIMER_32K_SYNCHRONIZED
+#if !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX))
#include <linux/clocksource.h>
-static cycle_t omap_32k_read(struct clocksource *cs)
+#ifdef CONFIG_ARCH_OMAP16XX
+static cycle_t omap16xx_32k_read(struct clocksource *cs)
+{
+ return omap_readl(OMAP16XX_TIMER_32K_SYNCHRONIZED);
+}
+#else
+#define omap16xx_32k_read NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP2420
+static cycle_t omap2420_32k_read(struct clocksource *cs)
+{
+ return omap_readl(OMAP2420_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap2420_32k_read NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP2430
+static cycle_t omap2430_32k_read(struct clocksource *cs)
+{
+ return omap_readl(OMAP2430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap2430_32k_read NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP34XX
+static cycle_t omap34xx_32k_read(struct clocksource *cs)
{
- return omap_readl(TIMER_32K_SYNCHRONIZED);
+ return omap_readl(OMAP3430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap34xx_32k_read NULL
+#endif
+
+/*
+ * Kernel assumes that sched_clock can be called early but may not have
+ * things ready yet.
+ */
+static cycle_t omap_32k_read_dummy(struct clocksource *cs)
+{
+ return 0;
}
static struct clocksource clocksource_32k = {
.name = "32k_counter",
.rating = 250,
- .read = omap_32k_read,
+ .read = omap_32k_read_dummy,
.mask = CLOCKSOURCE_MASK(32),
.shift = 10,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
@@ -207,7 +243,7 @@ unsigned long long sched_clock(void)
{
unsigned long long ret;
- ret = (unsigned long long)omap_32k_read(&clocksource_32k);
+ ret = (unsigned long long)clocksource_32k.read(&clocksource_32k);
ret = (ret * clocksource_32k.mult_orig) >> clocksource_32k.shift;
return ret;
}
@@ -220,6 +256,17 @@ static int __init omap_init_clocksource_32k(void)
if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
struct clk *sync_32k_ick;
+ if (cpu_is_omap16xx())
+ clocksource_32k.read = omap16xx_32k_read;
+ else if (cpu_is_omap2420())
+ clocksource_32k.read = omap2420_32k_read;
+ else if (cpu_is_omap2430())
+ clocksource_32k.read = omap2430_32k_read;
+ else if (cpu_is_omap34xx())
+ clocksource_32k.read = omap34xx_32k_read;
+ else
+ return -ENODEV;
+
sync_32k_ick = clk_get(NULL, "omap_32ksync_ick");
if (sync_32k_ick)
clk_enable(sync_32k_ick);
@@ -234,7 +281,7 @@ static int __init omap_init_clocksource_32k(void)
}
arch_initcall(omap_init_clocksource_32k);
-#endif /* TIMER_32K_SYNCHRONIZED */
+#endif /* !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) */
/* Global address base setup code */
diff --git a/arch/arm/plat-omap/include/mach/omap24xx.h b/arch/arm/plat-omap/include/mach/omap24xx.h
index 24335d4..4202cf4 100644
--- a/arch/arm/plat-omap/include/mach/omap24xx.h
+++ b/arch/arm/plat-omap/include/mach/omap24xx.h
@@ -87,7 +87,6 @@
#if defined(CONFIG_ARCH_OMAP2420)
-#define OMAP2_32KSYNCT_BASE OMAP2420_32KSYNCT_BASE
#define OMAP2_PRCM_BASE OMAP2420_PRCM_BASE
#define OMAP2_CM_BASE OMAP2420_CM_BASE
#define OMAP2_PRM_BASE OMAP2420_PRM_BASE
@@ -95,7 +94,6 @@
#elif defined(CONFIG_ARCH_OMAP2430)
-#define OMAP2_32KSYNCT_BASE OMAP2430_32KSYNCT_BASE
#define OMAP2_PRCM_BASE OMAP2430_PRCM_BASE
#define OMAP2_CM_BASE OMAP2430_CM_BASE
#define OMAP2_PRM_BASE OMAP2430_PRM_BASE
diff --git a/arch/arm/plat-omap/include/mach/omap34xx.h b/arch/arm/plat-omap/include/mach/omap34xx.h
index ab64015..581d910 100644
--- a/arch/arm/plat-omap/include/mach/omap34xx.h
+++ b/arch/arm/plat-omap/include/mach/omap34xx.h
@@ -85,7 +85,6 @@
#if defined(CONFIG_ARCH_OMAP3430)
-#define OMAP2_32KSYNCT_BASE OMAP3430_32KSYNCT_BASE
#define OMAP2_CM_BASE OMAP3430_CM_BASE
#define OMAP2_PRM_BASE OMAP3430_PRM_BASE
#define OMAP2_VA_IC_BASE IO_ADDRESS(OMAP34XX_IC_BASE)
next prev parent reply other threads:[~2009-05-07 20:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-07 20:42 [PATCH 0/5] More header clean-up Tony Lindgren
2009-05-07 20:42 ` Tony Lindgren [this message]
2009-05-07 20:42 ` [PATCH 2/5] ARM: OMAP2/3: Remove OMAP_PRM_REGADDR and OMAP2_PRM_BASE Tony Lindgren
2009-05-12 22:31 ` Kevin Hilman
2009-05-13 3:37 ` Tony Lindgren
2009-05-07 20:42 ` [PATCH 3/5] ARM: OMAP2/3: Move define of OMAP2_VA_IC_BASE to be local to entry-macro.S Tony Lindgren
2009-05-07 20:43 ` [PATCH 4/5] ARM: OMAP2/3: Remove OMAP2_PRCM_BASE Tony Lindgren
2009-05-07 20:43 ` [PATCH 5/5] ARM: OMAP2/3: Remove OMAP_CM_REGADDR Tony Lindgren
2009-05-08 5:20 ` [PATCH 0/5] More header clean-up Shilimkar, Santosh
2009-05-08 15:21 ` Tony Lindgren
2009-05-08 16:51 ` Shilimkar, Santosh
-- strict thread matches above, loose matches on Subject: below --
2009-05-14 23:21 [PATCH 0/5] More omap header clean-up for the merge window after 2.6.30 Tony Lindgren
2009-05-14 23:23 ` [PATCH 1/5] ARM: OMAP2/3: Remove OMAP2_32KSYNCT_BASE Tony Lindgren
2009-05-28 15:25 ` Russell King - ARM Linux
2009-05-28 15:54 ` Tony Lindgren
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