On Tue, Nov 13, 2012 at 05:09:22PM +0800, Haijun Zhang wrote:
> As large area erase needs long time usually a few minutes,
> which the host can't wait will bring about timeout error.
> So we need to split the large area to small sections which
> only need short erase time to avoid timeout error.
>
> Signed-off-by: Haijun Zhang <haijun.zh...@freescale.com>
> Signed-off-by: Jerry Huang <chang-ming.hu...@freescale.com>
> CC: Anton Vorontsov <cbouatmai...@gmail.com>
> ---
> changes for v2:
> - Recompute the timeout value and max_discard_to for mmc erase
> - split the V1 patch into two V2 patchs.
Oh, I see. A new version! :)
> drivers/mmc/host/sdhci-esdhc.h | 1 -
> drivers/mmc/host/sdhci-of-esdhc.c | 13 +++++++++++++
> 2 files changed, 13 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
> index d25f9ab..bb6d664 100644
> --- a/drivers/mmc/host/sdhci-esdhc.h
> +++ b/drivers/mmc/host/sdhci-esdhc.h
> @@ -21,7 +21,6 @@
> #define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
> SDHCI_QUIRK_NO_BUSY_IRQ | \
> SDHCI_QUIRK_NONSTANDARD_CLOCK | \
> - SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
> SDHCI_QUIRK_PIO_NEEDS_DELAY | \
> SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
>
> diff --git a/drivers/mmc/host/sdhci-of-esdhc.c
> b/drivers/mmc/host/sdhci-of-esdhc.c
> index 63d219f..a09ea67 100644
> --- a/drivers/mmc/host/sdhci-of-esdhc.c
> +++ b/drivers/mmc/host/sdhci-of-esdhc.c
> @@ -154,6 +154,18 @@ static void esdhc_of_set_clock(struct sdhci_host *host,
> unsigned int clock)
> /* Set the clock */
> esdhc_set_clock(host, clock);
> }
> +/*
An empty line is missing after the closing curly brace.
Otherwise, it looks good
Acked-by: Anton Vorontsov <cbouatmai...@gmail.com>
> + * As host dosn't supply us the method to calculate the timeout value,
> + * we assigned one for high speed SDHC card. So we can use this to calculate
> + * the max discard timeout value to limit the max discard sectors to avoid
> the
> + * timeout issue during large area erase.
> + */
> +static unsigned int esdhc_of_get_timeout_clock(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +
> + return pltfm_host->clock / 1000 / 32;
> +}
>
> #ifdef CONFIG_PM
> static u32 esdhc_proctl;
> @@ -190,6 +202,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
> .enable_dma = esdhc_of_enable_dma,
> .get_max_clock = esdhc_of_get_max_clock,
> .get_min_clock = esdhc_of_get_min_clock,
> + .get_timeout_clock = esdhc_of_get_timeout_clock,
> .platform_init = esdhc_of_platform_init,
> #ifdef CONFIG_PM
> .platform_suspend = esdhc_of_suspend,
> --
> 1.7.0.4
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