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Subject[PATCH v4 07/12] mmc: sdhci: Factor out target_timeout calculation
Date
From: Adrian Hunter <adrian.hunter@intel.com>

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>
---
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 b91163de4da4..c432ec3644aa 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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