From f70cf3ac328c6775ae52f163cd7b804f1b3fd7d2 Mon Sep 17 00:00:00 2001 From: Aisheng Dong Date: Wed, 27 Aug 2014 15:26:29 +0800 Subject: [PATCH] mmc: sdhci: add platform set_timeout hook Currently the common code assume 0xE is the maximum timeout counter value and use it to write into the timeout counter register. However, it's fairly possible that some other SoCs may have different max timeout register value. That means 0xE may be incorrect and becomes meaningless. It's also possible that other platforms has different timeout calculation algorithm. To be flexible, this patch provides a .set_timeout hook for those platforms to set the timeout on their way if they need. Reviewed-by: Shawn Guo Signed-off-by: Dong Aisheng Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci.c | 19 ++++++++++++++----- drivers/mmc/host/sdhci.h | 2 ++ 2 files changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2ba9c4b8508db..ff0e1c55d9583 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -707,19 +707,28 @@ static void sdhci_set_transfer_irqs(struct sdhci_host *host) sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); } -static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) +static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) { u8 count; + + if (host->ops->set_timeout) { + host->ops->set_timeout(host, cmd); + } else { + count = sdhci_calc_timeout(host, cmd); + sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); + } +} + +static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) +{ u8 ctrl; struct mmc_data *data = cmd->data; int ret; WARN_ON(host->data); - if (data || (cmd->flags & MMC_RSP_BUSY)) { - count = sdhci_calc_timeout(host, cmd); - sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); - } + if (data || (cmd->flags & MMC_RSP_BUSY)) + sdhci_set_timeout(host, cmd); if (!data) return; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index b130509689462..9828ff83d84c0 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -282,6 +282,8 @@ struct sdhci_ops { unsigned int (*get_min_clock)(struct sdhci_host *host); unsigned int (*get_timeout_clock)(struct sdhci_host *host); unsigned int (*get_max_timeout_count)(struct sdhci_host *host); + void (*set_timeout)(struct sdhci_host *host, + struct mmc_command *cmd); void (*set_bus_width)(struct sdhci_host *host, int width); void (*platform_send_init_74_clocks)(struct sdhci_host *host, u8 power_mode); -- 2.39.5