On Tue, Dec 10, 2013 at 08:56:04PM +0800, Dong Aisheng wrote:
> The default sdhci code use the 1 << 27 as the max timeout counter to
> to calculate the max_discard_to, however it's not correct for uSDHC
> since its the max counter is 1 << 28.
> Implement esdhc_get_max_timeout to handle it correctly.
>
> Signed-off-by: Dong Aisheng <b29396@xxxxxxxxxxxxx>
> Reported-by: Ed Sutter <ed.sutter@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/mmc/host/sdhci-esdhc-imx.c | 10 ++++++++++
> 1 files changed, 10 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 461a4c3..97b35e1 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -859,6 +859,15 @@ static int esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
> return esdhc_change_pinstate(host, uhs);
> }
>
> +unsigned int esdhc_get_max_timeout(struct sdhci_host *host)
static?
Shawn
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct pltfm_imx_data *imx_data = pltfm_host->priv;
> + u32 max_to = esdhc_is_usdhc(imx_data) ? 1 << 28 : 1 << 27;
> +
> + return max_to / (esdhc_pltfm_get_max_clock(host) / 1000);
> +}
> +
> static struct sdhci_ops sdhci_esdhc_ops = {
> .read_l = esdhc_readl_le,
> .read_w = esdhc_readw_le,
> @@ -871,6 +880,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
> .get_ro = esdhc_pltfm_get_ro,
> .platform_bus_width = esdhc_pltfm_bus_width,
> .set_uhs_signaling = esdhc_set_uhs_signaling,
> + .get_max_timeout = esdhc_get_max_timeout,
> };
>
> static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
> --
> 1.7.2.rc3
>
>
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