1. 09 10月, 2008 1 次提交
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  5. 27 7月, 2008 1 次提交
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  13. 22 4月, 2007 1 次提交
    • E
      [ARM] 4304/1: removes the unnecessary bit number from CKENnn_XXXX · 7053acbd
      Eric Miao 提交于
      This patch removes the unnecessary bit number from CKENnn_XXXX
      definitions for PXA, so that
      
      	CKEN0_PWM0 --> CKEN_PWM0
      	CKEN1_PWM1 --> CKEN_PWM1
      	...
      	CKEN24_CAMERA --> CKEN_CAMERA
      
      The reasons for the change of these defitions are:
      
      1. they do not scale - they are currently valid for pxa2xx, but
      definitely not valid for pxa3xx, e.g., pxa3xx has bit 3 for camera
      instead of bit 24
      
      2. they are unnecessary - the peripheral name within the definition
      has already announced its usage, we don't need those bit numbers
      to know which peripheral we are going to enable/disable clock for
      
      3. they are inconvenient - think about this: a driver programmer
      for pxa has to remember which bit in the CKEN register to turn
      on/off
      
      Another change in the patch is to make the definitions equal to its
      clock bit index, so that
      
         #define CKEN_CAMERA  (24)
      
      instead of
      
         #define CKEN_CAMERA  (1 << 24)
      
      this change, however, will add a run-time bit shift operation in
      pxa_set_cken(), but the benefit of this change is that it scales
      when bit index exceeds 32, e.g., pxa3xx has two registers CKENA
      and CKENB, totally 64 bit for this, suppose CAMERA clock enabling
      bit is CKENB:10, one can simply define CKEN_CAMERA to be (32 + 10)
      and so that pxa_set_cken() need minimum change to adapt to that.
      Signed-off-by: Neric miao <eric.y.miao@gmail.com>
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      7053acbd
  14. 30 11月, 2006 1 次提交
  15. 07 10月, 2006 1 次提交
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  17. 02 8月, 2006 1 次提交
  18. 29 6月, 2006 1 次提交
  19. 29 3月, 2006 1 次提交