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[MMC] Cleanup 385e3227d4

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Rather than having two places which independently calculate the
timeout for data transfers, make it a library function instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Russell King
2006-09-07 15:57:12 +01:00
committed by Russell King
parent 148f93d59c
commit d773d72551
3 changed files with 53 additions and 48 deletions
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35
drivers/mmc/mmc_block.c
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@@ -179,40 +179,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
brq.stop.arg = 0;
brq.stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
brq.data.timeout_ns = card->csd.tacc_ns * 10;
brq.data.timeout_clks = card->csd.tacc_clks * 10;
/*
* Scale up the timeout by the r2w factor
*/
if (rq_data_dir(req) == WRITE) {
brq.data.timeout_ns <<= card->csd.r2w_factor;
brq.data.timeout_clks <<= card->csd.r2w_factor;
}
/*
* SD cards use a 100 multiplier and has a upper limit
*/
if (mmc_card_sd(card)) {
unsigned int limit_us, timeout_us;
brq.data.timeout_ns *= 10;
brq.data.timeout_clks *= 10;
if (rq_data_dir(req) == READ)
limit_us = 100000;
else
limit_us = 250000;
timeout_us = brq.data.timeout_ns / 1000;
timeout_us += brq.data.timeout_clks * 1000 /
(card->host->ios.clock / 1000);
if (timeout_us > limit_us) {
brq.data.timeout_ns = limit_us * 1000;
brq.data.timeout_clks = 0;
}
}
mmc_set_data_timeout(&brq.data, card, rq_data_dir(req) != READ);
if (rq_data_dir(req) == READ) {
brq.cmd.opcode = brq.data.blocks > 1 ? MMC_READ_MULTIPLE_BLOCK : MMC_READ_SINGLE_BLOCK;