1. 5dbb29f nios2: add gpio_is_valid by Thomas Chou · Mon Dec 27 10:46:01 2010 +0800
  2. c259ec8 nios2: add gpio_free by Thomas Chou · Fri Dec 24 15:19:44 2010 +0800
  3. 5ae05c5 nios2: add gpio_request by Thomas Chou · Wed Jun 09 09:51:09 2010 +0800
  4. f6a59cb nios2: add gpio support to nios2-generic board by Thomas Chou · Fri Apr 30 11:34:15 2010 +0800