1. 03 Feb, 2015 1 commit
    • Ulf Hansson's avatar
      mmc: core: Invoke mmc_pwrseq_post_power_on() prior MMC_POWER_ON state · 4febb7e2
      Ulf Hansson authored
      Host drivers have different ways to sends their "init stream" to the
      card. Some need to do it as part of a request, some do it from the
      ->set_ios() callback in the MMC_POWER_ON state and some don't send an
      "init stream" at all.
      
      To be able to use the reset GPIOs from the simple MMC power sequence
      provider, the card need to be powered and the "init stream" must not
      have been sent.
      
      To cope with these requirements, invoke mmc_pwrseq_post_power_on()
      prior we change the state to MMC_POWER_ON in mmc_power_up().
      
      Host drivers shall perform power up operations in the MMC_POWER_UP
      state. Unfortunate three hosts (au1xmmc, cb710-mmc and toshsd) don't
      conform to this expectation. Instead those ignore the MMC_POWER_UP
      state and delays their power up operations to the MMC_POWER_ON state.
      
      Those hosts needs to change their behavior to enable proper support for
      the simple MMC power sequence provider.
      Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
      Reviewed-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
      Tested-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
      4febb7e2
  2. 30 Jan, 2015 5 commits
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