1. 28 Jan, 2015 1 commit
    • Ulf Hansson's avatar
      mmc: core: Initial support for MMC power sequences · 3aa8793f
      Ulf Hansson authored
      System on chip designs may specify a specific MMC power sequence. To
      successfully detect an (e)MMC/SD/SDIO card, that power sequence must
      be followed while initializing the card.
      To be able to handle these SOC specific power sequences, let's add a
      MMC power sequence interface. It provides the following functions to
      help the mmc core to deal with these power sequences.
      mmc_pwrseq_alloc() - Invoked from mmc_of_parse(), to initialize data.
      mmc_pwrseq_pre_power_on()- Invoked in the beginning of mmc_power_up().
      mmc_pwrseq_post_power_on()- Invoked at the end in mmc_power_up().
      mmc_pwrseq_power_off()- Invoked from mmc_power_off().
      mmc_pwrseq_free() - Invoked from mmc_free_host(), to free data.
      Each MMC power sequence provider will be responsible to implement a set
      of callbacks. These callbacks mirrors the functions above.
      This patch adds the skeleton, following patches will extend the core of
      the MMC power sequence and add support for a specific simple MMC power
      Do note, since the mmc_pwrseq_alloc() is invoked from mmc_of_parse(),
      host drivers needs to make use of this API to enable the support for
      MMC power sequences. Moreover the MMC power sequence support depends on
      Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
      Tested-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
      Reviewed-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
  2. 21 Jan, 2015 6 commits
  3. 20 Jan, 2015 22 commits
  4. 19 Jan, 2015 11 commits