code.ossystems Code Review - meta-freescale.git/blob

   1 From 2df4dba8faa9a781a5a1c6c09d646d2b692c9a0c Mon Sep 17 00:00:00 2001
   2 From: Loren Huang <b02279@freescale.com>
   3 Date: Tue, 4 Jun 2013 15:08:15 +0800
   4 Subject: [PATCH 2/6] ENGR00265465 gpu:Add global value for minimum 3D clock
   5  export
   6
   7 Add global value gpu3DMinClock so that minimum 3D clock can be change by user.
   8 When gpu min clock is too low, it may cause IPU starvation issue in certain case.
   9 Use echo x > /sys/module/galcore/parameters/gpu3DMinClock to change it.
  10
  11 Cherry-pick from 3.0.35 branch.
  12
  13 Upstream-Status: Backport [3.5.7-1.0.0]
  14
  15 Signed-off-by: Loren Huang <b02279@freescale.com>
  16 Acked-by: Lily Zhang
  17 ---
  18  drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c | 6 +++++-
  19  drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c    | 3 +++
  20  2 files changed, 8 insertions(+), 1 deletion(-)
  21
  22 diff --git a/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c b/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c
  23 index 3829999..ebd36fe 100644
  24 --- a/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c
  25 +++ b/drivers/mxc/gpu-viv/arch/XAQ2/hal/kernel/gc_hal_kernel_hardware.c
  26 @@ -36,6 +36,7 @@ typedef struct _gcsiDEBUG_REGISTERS
  27  }
  28  gcsiDEBUG_REGISTERS;
  29
  30 +extern int gpu3DMinClock;
  31  /******************************************************************************\
  32  ********************************* Support Code *********************************
  33  \******************************************************************************/
  34 @@ -4630,7 +4631,10 @@ gckHARDWARE_GetFscaleValue(
  35      )
  36  {
  37      *FscaleValue = Hardware->powerOnFscaleVal;
  38 -    *MinFscaleValue = 1;
  39 +    if ((gpu3DMinClock > 0) && (gpu3DMinClock <= 64) && (Hardware->core == gcvCORE_MAJOR))
  40 +        *MinFscaleValue = gpu3DMinClock;
  41 +    else
  42 +        *MinFscaleValue = 1;
  43      *MaxFscaleValue = 64;
  44
  45      return gcvSTATUS_OK;
  46 diff --git a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c
  47 index 2ed3d0e..64cace1 100644
  48 --- a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c
  49 +++ b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_driver.c
  50 @@ -146,6 +146,9 @@ module_param(logFileSize,uint, 0644);
  51  static int showArgs = 0;
  52  module_param(showArgs, int, 0644);
  53
  54 +int gpu3DMinClock = 0;
  55 +module_param(gpu3DMinClock, int, 0644);
  56 +
  57  #if ENABLE_GPU_CLOCK_BY_DRIVER
  58      unsigned long coreClock = 156000000;
  59      module_param(coreClock, ulong, 0644);
  60 --
  61 1.8.3.2
  62