target/linux/imx6/patches-3.12/0003-ARM-imx-add-soc-revision-helper-functions.patch

   1 From bfefdff8f91aa0a9ff1291d18d54498af276a6e5 Mon Sep 17 00:00:00 2001
   2 From: Shawn Guo <shawn.guo@linaro.org>
   3 Date: Tue, 13 Aug 2013 13:54:02 +0800
   4 Subject: [PATCH] ARM: imx: add soc revision helper functions
   5
   6 Similar to what we do for cpu type, the patch adds helper functions
   7 imx_set_soc_revision() and imx_get_soc_revision() to maintain
   8 imx_soc_revision in cpu.c.
   9
  10 Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
  11 ---
  12  arch/arm/mach-imx/common.h |  2 ++
  13  arch/arm/mach-imx/cpu.c    | 12 ++++++++++++
  14  2 files changed, 14 insertions(+)
  15
  16 --- a/arch/arm/mach-imx/common.h
  17 +++ b/arch/arm/mach-imx/common.h
  18 @@ -81,6 +81,8 @@ extern int imx6q_revision(void);
  19  extern int mx53_display_revision(void);
  20  extern void imx_set_aips(void __iomem *);
  21  extern int mxc_device_init(void);
  22 +void imx_set_soc_revision(unsigned int rev);
  23 +unsigned int imx_get_soc_revision(void);
  24
  25  enum mxc_cpu_pwr_mode {
  26         WAIT_CLOCKED,           /* wfi only */
  27 --- a/arch/arm/mach-imx/cpu.c
  28 +++ b/arch/arm/mach-imx/cpu.c
  29 @@ -8,11 +8,23 @@
  30  unsigned int __mxc_cpu_type;
  31  EXPORT_SYMBOL(__mxc_cpu_type);
  32
  33 +static unsigned int imx_soc_revision;
  34 +
  35  void mxc_set_cpu_type(unsigned int type)
  36  {
  37         __mxc_cpu_type = type;
  38  }
  39
  40 +void imx_set_soc_revision(unsigned int rev)
  41 +{
  42 +       imx_soc_revision = rev;
  43 +}
  44 +
  45 +unsigned int imx_get_soc_revision(void)
  46 +{
  47 +       return imx_soc_revision;
  48 +}
  49 +
  50  void imx_print_silicon_rev(const char *cpu, int srev)
  51  {
  52         if (srev == IMX_CHIP_REVISION_UNKNOWN)