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Date: Fri, 27 Apr 2018 17:17:16 +0530 From: Kishon Vijay Abraham I <kishon@...com> To: Ulf Hansson <ulf.hansson@...aro.org>, Adrian Hunter <adrian.hunter@...el.com> CC: Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>, <kishon@...com> Subject: [PATCH v5 07/14] mmc: sdhci: Factor out target_timeout calculation From: Adrian Hunter <adrian.hunter@...el.com> Factor out the target_timeout calculation so it can be re-used. Signed-off-by: Adrian Hunter <adrian.hunter@...el.com> Signed-off-by: Kishon Vijay Abraham I <kishon@...com> --- drivers/mmc/host/sdhci.c | 48 +++++++++++++++++++++++++--------------- 1 file changed, 30 insertions(+), 18 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 8da118d0d2c4..b229354e5b88 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -709,6 +709,35 @@ static u32 sdhci_sdma_address(struct sdhci_host *host) return sg_dma_address(host->data->sg); } +static unsigned int sdhci_target_timeout(struct sdhci_host *host, + struct mmc_command *cmd, + struct mmc_data *data) +{ + unsigned int target_timeout; + + /* timeout in us */ + if (!data) { + target_timeout = cmd->busy_timeout * 1000; + } else { + target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000); + if (host->clock && data->timeout_clks) { + unsigned long long val; + + /* + * data->timeout_clks is in units of clock cycles. + * host->clock is in Hz. target_timeout is in us. + * Hence, us = 1000000 * cycles / Hz. Round up. + */ + val = 1000000ULL * data->timeout_clks; + if (do_div(val, host->clock)) + target_timeout++; + target_timeout += val; + } + } + + return target_timeout; +} + static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd, bool *too_big) { @@ -732,24 +761,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd, return 0xE; /* timeout in us */ - if (!data) - target_timeout = cmd->busy_timeout * 1000; - else { - target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000); - if (host->clock && data->timeout_clks) { - unsigned long long val; - - /* - * data->timeout_clks is in units of clock cycles. - * host->clock is in Hz. target_timeout is in us. - * Hence, us = 1000000 * cycles / Hz. Round up. - */ - val = 1000000ULL * data->timeout_clks; - if (do_div(val, host->clock)) - target_timeout++; - target_timeout += val; - } - } + target_timeout = sdhci_target_timeout(host, cmd, data); /* * Figure out needed cycles. -- 2.17.0
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