On 09/06/16 10:10, Gregory CLEMENT wrote:
> From: Victor Gu <xigu@xxxxxxxxxxx>
>
> This path adds the driver for the Marvell Xenon eMMC host controller
> which supports eMMC 5.1, SD 3.0.
>
> However this driver supports only up to eMMC 5.0 since the command queue
> feature is not included (yet) in the driver.
>
> [gregory.clement@xxxxxxxxxxxxxxxxxx:
> - reformulate commit log
> - overload the sdhci_set_uhs_signaling function instead of using a quirk
> - fix a kconfig dependency
> - remove dead code]
>
> Signed-off-by: Victor Gu <xigu@xxxxxxxxxxx>
> Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/mmc/host/Kconfig | 10 +
> drivers/mmc/host/Makefile | 1 +
> drivers/mmc/host/sdhci-xenon.c | 1164 ++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 1175 insertions(+)
> create mode 100644 drivers/mmc/host/sdhci-xenon.c
>
<SNIP>
> diff --git a/drivers/mmc/host/sdhci-xenon.c b/drivers/mmc/host/sdhci-xenon.c
> new file mode 100644
> index 000000000000..43c06db95872
> --- /dev/null
> +++ b/drivers/mmc/host/sdhci-xenon.c
<SNIP>
> +static int sdhci_xenon_delay_adj_test(struct sdhci_host *host,
> + struct mmc_card *card, unsigned int delay,
> + bool invert, bool phase)
> +{
> + int ret;
> + struct mmc_card *oldcard;
> +
> + sdhci_xenon_set_fix_delay(host, delay, invert, phase);
> +
> + /*
> + * If the card is not yet associated to the host, we
> + * temporally do it
> + */
> + oldcard = card->host->card;
> + if (!oldcard)
> + card->host->card = card;
> + ret = card_alive(card);
This looks like an abuse of bus_ops->alive(). You will need to get
agreement with Ulf how to handle this. I will wait for Ulf's comments
before reviewing this patch set further.
> + card->host->card = oldcard;
> + if (ret) {
> + pr_debug("Xenon failed when sampling fix delay %d, inverted %d, phase %d\n",
> + delay, invert, phase);
> + return -EIO;
> + }
> +
> + pr_debug("Xenon succeeded when sampling fixed delay %d, inverted %d, phase %d\n",
> + delay, invert, phase);
> + return 0;
> +}
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