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| author | Jens Arnold <amiconn@rockbox.org> | 2009-06-07 21:27:05 +0000 |
|---|---|---|
| committer | Jens Arnold <amiconn@rockbox.org> | 2009-06-07 21:27:05 +0000 |
| commit | 1d6df54df27cb41c02226678a2c8f9feddd1a1e0 (patch) | |
| tree | 5fdc6dd98ac0208f5c3351b062063af6914cbefb /firmware/drivers/ata_mmc.c | |
| parent | c3182ec333982e961d3babfbdb1125fd5bac7fb8 (diff) | |
| download | rockbox-1d6df54df27cb41c02226678a2c8f9feddd1a1e0.tar.gz rockbox-1d6df54df27cb41c02226678a2c8f9feddd1a1e0.zip | |
Convert a number of places in core and plugins to use the BIT_N() macro instead of 1<<n. Speeds up things on SH1, and also reduces core binsize. Most notable speedups: 1 bit lcd driver: drawpixel +20%, drawline + 27%, hline +5%; jpeg viewer: +8% for 1/8 scaling. Other targets are unaffected.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21205 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/ata_mmc.c')
| -rw-r--r-- | firmware/drivers/ata_mmc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/firmware/drivers/ata_mmc.c b/firmware/drivers/ata_mmc.c index 5104f8cf97..3396149602 100644 --- a/firmware/drivers/ata_mmc.c +++ b/firmware/drivers/ata_mmc.c | |||
| @@ -450,7 +450,7 @@ static int initialize_card(int card_no) | |||
| 450 | card->tsac = card->tsac * exponent[taac_exp] / 10; | 450 | card->tsac = card->tsac * exponent[taac_exp] / 10; |
| 451 | 451 | ||
| 452 | /* r2w_factor, write timeout */ | 452 | /* r2w_factor, write timeout */ |
| 453 | card->r2w_factor = 1 << card_extract_bits(card->csd, 99, 3); | 453 | card->r2w_factor = BIT_N(card_extract_bits(card->csd, 99, 3)); |
| 454 | card->write_timeout = card->read_timeout * card->r2w_factor; | 454 | card->write_timeout = card->read_timeout * card->r2w_factor; |
| 455 | 455 | ||
| 456 | if (card->r2w_factor > 32) /* Such cards often need extra read delay */ | 456 | if (card->r2w_factor > 32) /* Such cards often need extra read delay */ |