linux-kernel - [PATCH v3] x86: punit_atom: punit device state debug driver

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Message-Id: <1430772593-20204-1-git-send-email-srinivas.pandruvada@linux.intel.com>
Date:	Mon,  4 May 2015 13:49:52 -0700
From:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
To:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, x86@...nel.org
Cc:	linux-kernel@...r.kernel.org, pebolle@...cali.nl,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Subject: [PATCH v3] x86: punit_atom: punit device state debug driver

v3
Fixed biggest blunder 

consecutive read output

#cat /sys/kernel/debug/punit_atom# cat dev_power_state 


PUNIT NORTH COMPLEX DEVICES :
GFX RENDER : D0i3
GFX MEDIA : D0i3
  DISPLAY : D0i3
      VED : D0i3
      ISP : D0i3
      MIO : D0

#/sys/kernel/debug/punit_atom# cat dev_power_state 


PUNIT NORTH COMPLEX DEVICES :
GFX RENDER : D0i3
GFX MEDIA : D0i3
  DISPLAY : D0i3
      VED : D0i3
      ISP : D0i3
      MIO : D0

#cat /sys/kernel/debug/punit_atom# cat dev_power_state 


PUNIT NORTH COMPLEX DEVICES :
GFX RENDER : D0i3
GFX MEDIA : D0i3
  DISPLAY : D0i3
      VED : D0i3
      ISP : D0i3
      MIO : D0

# cat /sys/kernel/debug/punit_atom# cat dev_power_state 


PUNIT NORTH COMPLEX DEVICES :
GFX RENDER : D0i3
GFX MEDIA : D0i3
  DISPLAY : D0i3
      VED : D0i3
      ISP : D0i3
      MIO : D0



v2
Addressed Ingo Molnar's comments
- Fix commit message
- Added punit explanation
- Formatting comments
- Moved to arch/x86/platform/intel_mid
- changed the debugfs file name

v1
 Based on review comments
 - Changed to tristate instead of bool
 - Moved config to kconfig.debug
 - Added debug in module name
 - Returning -ENXIO on debugfs file create error

v0:
Base version


Srinivas Pandruvada (1):
  x86: punit_atom: punit device state debug driver

 arch/x86/Kconfig.debug                         |   9 ++
 arch/x86/platform/intel-mid/Makefile           |   2 +
 arch/x86/platform/intel-mid/punit_atom_debug.c | 186 +++++++++++++++++++++++++
 3 files changed, 197 insertions(+)
 create mode 100644 arch/x86/platform/intel-mid/punit_atom_debug.c

-- 
1.9.1

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