From: jason.hui@linaro.org (Jason Liu)
To: linux-arm-kernel@lists.infradead.org
Subject: [[PATCH v3 5/6] ARM: mx35: use generic function for displaying silicon revision
Date: Fri, 26 Aug 2011 13:35:22 +0800 [thread overview]
Message-ID: <1314336923-25162-6-git-send-email-jason.hui@linaro.org> (raw)
In-Reply-To: <1314336923-25162-1-git-send-email-jason.hui@linaro.org>
update to use generic function for displaying silicon revision
Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/mach-imx/clock-imx35.c | 3 ++-
arch/arm/mach-imx/cpu-imx35.c | 30 ++++++++++++++----------------
arch/arm/plat-mxc/include/mach/mx3x.h | 9 +--------
3 files changed, 17 insertions(+), 25 deletions(-)
diff --git a/arch/arm/mach-imx/clock-imx35.c b/arch/arm/mach-imx/clock-imx35.c
index 88b62a0..abf30d4 100644
--- a/arch/arm/mach-imx/clock-imx35.c
+++ b/arch/arm/mach-imx/clock-imx35.c
@@ -537,7 +537,8 @@ int __init mx35_clocks_init()
__raw_writel(cgr3, CCM_BASE + CCM_CGR3);
clk_enable(&iim_clk);
- mx35_read_cpu_rev();
+ imx_print_silicon_rev("i.MX35", mx35_revision());
+ clk_disable(&iim_clk);
#ifdef CONFIG_MXC_USE_EPIT
epit_timer_init(&epit1_clk,
diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c
index 6637cd8..846e46e 100644
--- a/arch/arm/mach-imx/cpu-imx35.c
+++ b/arch/arm/mach-imx/cpu-imx35.c
@@ -13,32 +13,30 @@
#include <mach/hardware.h>
#include <mach/iim.h>
-unsigned int mx35_cpu_rev;
-EXPORT_SYMBOL(mx35_cpu_rev);
+static int mx35_cpu_rev = -1;
-void __init mx35_read_cpu_rev(void)
+static int mx35_read_cpu_rev(void)
{
u32 rev;
- char *srev;
rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV));
switch (rev) {
case 0x00:
- mx35_cpu_rev = IMX_CHIP_REVISION_1_0;
- srev = "1.0";
- break;
+ return IMX_CHIP_REVISION_1_0;
case 0x10:
- mx35_cpu_rev = IMX_CHIP_REVISION_2_0;
- srev = "2.0";
- break;
+ return IMX_CHIP_REVISION_2_0;
case 0x11:
- mx35_cpu_rev = IMX_CHIP_REVISION_2_1;
- srev = "2.1";
- break;
+ return IMX_CHIP_REVISION_2_1;
default:
- mx35_cpu_rev = IMX_CHIP_REVISION_UNKNOWN;
- srev = "unknown";
+ return IMX_CHIP_REVISION_UNKNOWN;
}
+}
+
+int mx35_revision(void)
+{
+ if (mx35_cpu_rev == -1)
+ mx35_cpu_rev = mx35_read_cpu_rev();
- printk(KERN_INFO "CPU identified as i.MX35, silicon rev %s\n", srev);
+ return mx35_cpu_rev;
}
+EXPORT_SYMBOL(mx35_revision);
diff --git a/arch/arm/plat-mxc/include/mach/mx3x.h b/arch/arm/plat-mxc/include/mach/mx3x.h
index e1850f4..30dbf42 100644
--- a/arch/arm/plat-mxc/include/mach/mx3x.h
+++ b/arch/arm/plat-mxc/include/mach/mx3x.h
@@ -187,14 +187,7 @@
/* Mandatory defines used globally */
#if !defined(__ASSEMBLY__) && !defined(__MXC_BOOT_UNCOMPRESS)
-extern unsigned int mx35_cpu_rev;
-extern void mx35_read_cpu_rev(void);
-
-static inline int mx35_revision(void)
-{
- return mx35_cpu_rev;
-}
-
+extern int mx35_revision(void);
extern int mx31_revision(void);
#endif
--
1.7.4.1
next prev parent reply other threads:[~2011-08-26 5:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-26 5:35 [[PATCH v3 0/6] imx soc revision clean up Jason Liu
2011-08-26 5:35 ` [[PATCH v3 1/6] ARM: imx: Introduce generic function for displaying silicon revision Jason Liu
2011-08-26 5:35 ` [[PATCH v3 2/6] ARM: mx25: Print silicon revision on boot Jason Liu
2011-08-26 5:35 ` [[PATCH v3 3/6] ARM: mx27: " Jason Liu
2011-08-26 5:35 ` [[PATCH v3 4/6] ARM: mx31: use generic function for displaying silicon revision Jason Liu
2011-08-26 5:35 ` Jason Liu [this message]
2011-08-26 5:35 ` [[PATCH v3 6/6] ARM: mx5: " Jason Liu
2011-08-26 8:18 ` [[PATCH v3 0/6] imx soc revision clean up Sascha Hauer
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