1. 23 12月, 2010 1 次提交
  2. 21 12月, 2010 1 次提交
  3. 08 12月, 2010 1 次提交
    • V
      OMAP: GPIO: Implement GPIO as a platform device · 77640aab
      Varadarajan, Charulatha 提交于
      Implement GPIO as a platform device.
      
      GPIO APIs are used in machine_init functions. Hence it is
      required to complete GPIO probe before board_init. Therefore
      GPIO device register and driver register are implemented as
      postcore_initcalls.
      
      omap_gpio_init() does nothing now and this function would be
      removed in the next patch as it's usage is spread across most
      of the board files.
      
      Inorder to convert GPIO as platform device, modifications are
      required in clockxxxx_data.c file for OMAP1 so that device names
      can be used to obtain clock instead of getting clocks by
      name/NULL ptr.
      
      Use runtime pm APIs (pm_runtime_put*/pm_runtime_get*) for enabling
      or disabling the clocks, modify sysconfig settings and remove usage
      of clock FW APIs.
      Note 1: Converting GPIO driver to use runtime PM APIs is not done as a
      separate patch because GPIO clock names are different for various OMAPs
      and are different for some of the banks in the same CPU. This would need
      usage of cpu_is checks and bank id checks while using clock FW APIs in
      the gpio driver. Hence while making GPIO a platform driver framework,
      PM runtime APIs are used directly.
      
      Note 2: While implementing GPIO as a platform device, pm runtime APIs
      are used as mentioned above and modification is not done in gpio's
      prepare for idle/ resume after idle functions. This would be done
      in the next patch series and GPIO driver would be made to use dev_pm_ops
      instead of sysdev_class in that series only.
      
      Due to the above, the GPIO driver implicitly relies on
      CM_AUTOIDLE = 1 on its iclk for power management to work, since the
      driver never disables its iclk.
      This would be taken care in the next patch series (see Note 3 below).
      
      Refer to
      http://www.mail-archive.com/linux-omap@vger.kernel.org/msg39112.html
      for more details.
      
      Note 3: only pm_runtime_get_sync is called in gpio's probe() and
      pm_runtime_put* is never called. This is to make the implementation
      similar to the existing GPIO code. Another patch series would be sent
      to correct this.
      
      In OMAP3 and OMAP4 gpio's debounce clocks are optional clocks. They
      are enabled/ disabled whenever required using clock framework APIs
      
      TODO:
      1. Cleanup the GPIO driver. Use function pointers and register
      offest pointers instead of using hardcoded values
      2. Remove all cpu_is_ checks and OMAP specific macros
      3. Remove usage of gpio_bank array so that only
         instance specific information is used in driver code
      4. Rename 'method'/ avoid it's usage
      5. Fix the non-wakeup gpios handling for OMAP2430, OMAP3 & OMAP4
      6. Modify gpio's prepare for idle/ resume after idle functions
         to use runtime pm implentation.
      Signed-off-by: NCharulatha V <charu@ti.com>
      Signed-off-by: NRajendra Nayak <rnayak@ti.com>
      Reviewed-by: NBasak, Partha <p-basak2@ti.com>
      Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
      [tony@atomide.com: updated for bank specific revision and updated boards]
      Signed-off-by: NTony Lindgren <tony@atomide.com>
      77640aab
  4. 20 10月, 2010 1 次提交
    • N
      arm: remove machine_desc.io_pg_offst and .phys_io · 6451d778
      Nicolas Pitre 提交于
      Since we're now using addruart to establish the debug mapping, we can
      remove the io_pg_offst and phys_io members of struct machine_desc.
      
      The various declarations were removed using the following script:
      
        grep -rl MACHINE_START arch/arm | xargs \
        sed -i '/MACHINE_START/,/MACHINE_END/ { /\.\(phys_io\|io_pg_offst\)/d }'
      
      [ Initial patch was from Jeremy Kerr, example script from Russell King ]
      Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org>
      Acked-by: Eric Miao <eric.miao at canonical.com>
      6451d778
  5. 13 10月, 2010 1 次提交
  6. 24 9月, 2010 1 次提交
    • C
      HTCHERALD: MMC, I2C, HTCPLD, SPI, TSC2046 · 493c32a0
      Cory Maccarrone 提交于
      This change adds in MMC and I2C support to the HTC Herald board, as well
      as adding the HTCPLD driver for the PLD used on this phone.  It also
      adds in the gpio-keys entries for the front directional keys and
      selector and the cursor keys on the slide-out keyboard, and gpio-leds
      support for the LEDs attached to the htcpld.
      
      Additionally, SPI bus support (using the spi100k driver) and
      touchscreen support (using the ads7846 driver) were added.
      Signed-off-by: NCory Maccarrone <darkstar6262@gmail.com>
      Signed-off-by: NTony Lindgren <tony@atomide.com>
      493c32a0
  7. 16 7月, 2010 1 次提交
  8. 05 7月, 2010 1 次提交
  9. 15 5月, 2010 1 次提交
  10. 12 12月, 2009 1 次提交
  11. 23 11月, 2009 1 次提交