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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-01 20:31:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-01 20:31:25 -0700 |
| commit | 16ee792e45cf0c97ce061fce03c36cab5551ec72 (patch) | |
| tree | dc68af705fbac4b5d71325aa972730199bb187dd /arch/arm/mach-imx/cpu-imx27.c | |
| parent | f906fb1d70e016726fccfb0d978c5d425503db9d (diff) | |
| parent | efa62e1355f0495f37f1296754b8880947c8da72 (diff) | |
| download | olio-linux-3.10-16ee792e45cf0c97ce061fce03c36cab5551ec72.tar.xz olio-linux-3.10-16ee792e45cf0c97ce061fce03c36cab5551ec72.zip | |
Merge branch 'next/devel' of git://git.linaro.org/people/arnd/arm-soc
* 'next/devel' of git://git.linaro.org/people/arnd/arm-soc: (50 commits)
ARM: tegra: update defconfig
arm/tegra: Harmony: Configure PMC for low-level interrupts
arm/tegra: device tree support for ventana board
arm/tegra: add support for ventana pinmuxing
arm/tegra: prepare Seaboard pinmux code for derived boards
arm/tegra: pinmux: ioremap registers
gpio/tegra: Convert to a platform device
arm/tegra: Convert pinmux driver to a platform device
arm/dt: Tegra: Add pinmux node to tegra20.dtsi
arm/tegra: Prep boards for gpio/pinmux conversion to pdevs
ARM: mx5: fix clock usage for suspend
ARM i.MX entry-macro.S: remove now unused code
ARM i.MX boards: use CONFIG_MULTI_IRQ_HANDLER
ARM i.MX tzic: add handle_irq function
ARM i.MX avic: add handle_irq function
ARM: mx25: Add the missing IIM base definition
ARM i.MX avic: convert to use generic irq chip
mx31moboard: Add poweroff support
ARM: mach-qong: Add watchdog support
ARM: davinci: AM18x: Add wl1271/wlan support
...
Fix up conflicts in:
arch/arm/mach-at91/at91sam9g45.c
arch/arm/mach-mx5/devices-imx53.h
arch/arm/plat-mxc/include/mach/memory.h
Diffstat (limited to 'arch/arm/mach-imx/cpu-imx27.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx27.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/arch/arm/mach-imx/cpu-imx27.c b/arch/arm/mach-imx/cpu-imx27.c index 3b117be37bd..ff38e1505f6 100644 --- a/arch/arm/mach-imx/cpu-imx27.c +++ b/arch/arm/mach-imx/cpu-imx27.c @@ -26,12 +26,12 @@ #include <mach/hardware.h> -static int cpu_silicon_rev = -1; -static int cpu_partnumber; +static int mx27_cpu_rev = -1; +static int mx27_cpu_partnumber; #define SYS_CHIP_ID 0x00 /* The offset of CHIP ID register */ -static void query_silicon_parameter(void) +static int mx27_read_cpu_rev(void) { u32 val; /* @@ -42,20 +42,18 @@ static void query_silicon_parameter(void) val = __raw_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR + SYS_CHIP_ID)); + mx27_cpu_partnumber = (int)((val >> 12) & 0xFFFF); + switch (val >> 28) { case 0: - cpu_silicon_rev = IMX_CHIP_REVISION_1_0; - break; + return IMX_CHIP_REVISION_1_0; case 1: - cpu_silicon_rev = IMX_CHIP_REVISION_2_0; - break; + return IMX_CHIP_REVISION_2_0; case 2: - cpu_silicon_rev = IMX_CHIP_REVISION_2_1; - break; + return IMX_CHIP_REVISION_2_1; default: - cpu_silicon_rev = IMX_CHIP_REVISION_UNKNOWN; + return IMX_CHIP_REVISION_UNKNOWN; } - cpu_partnumber = (int)((val >> 12) & 0xFFFF); } /* @@ -65,12 +63,12 @@ static void query_silicon_parameter(void) */ int mx27_revision(void) { - if (cpu_silicon_rev == -1) - query_silicon_parameter(); + if (mx27_cpu_rev == -1) + mx27_cpu_rev = mx27_read_cpu_rev(); - if (cpu_partnumber != 0x8821) + if (mx27_cpu_partnumber != 0x8821) return -EINVAL; - return cpu_silicon_rev; + return mx27_cpu_rev; } EXPORT_SYMBOL(mx27_revision); |