diff options
author | Adrian Hunter <adrian.hunter@intel.com> | 2018-04-27 14:47:16 +0300 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-05-03 10:36:20 +0300 |
commit | 0bb28d738fb2066b314d0fe2eccffd1cab59517b (patch) | |
tree | 8ed4629158ff68287f3f646ce9aaf0416656b10a | |
parent | a999fd9392310ff44b684f2011a60de7c7e73891 (diff) | |
download | linux-0bb28d738fb2066b314d0fe2eccffd1cab59517b.tar.xz |
mmc: sdhci: Factor out target_timeout calculation
Factor out the target_timeout calculation so it can be re-used.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
-rw-r--r-- | drivers/mmc/host/sdhci.c | 48 |
1 files 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. |