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mmc: core: correct taac parameter according to the specification

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Per the spec of JESD84-B51, section 7.3, replace tacc with taac to
fix the obvious typo.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin 2017-08-02 11:12:42 +08:00 committed by Ulf Hansson
parent 30de038d79
commit 4406ae215b
4 changed files with 19 additions and 19 deletions
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14
drivers/mmc/core/core.c
View File

@ -733,8 +733,8 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
if (data->flags & MMC_DATA_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
data->timeout_ns = card->csd.taac_ns * mult;
data->timeout_clks = card->csd.taac_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
@ -1859,14 +1859,14 @@ static unsigned int mmc_mmc_erase_timeout(struct mmc_card *card,
} else {
/* CSD Erase Group Size uses write timeout */
unsigned int mult = (10 << card->csd.r2w_factor);
unsigned int timeout_clks = card->csd.tacc_clks * mult;
unsigned int timeout_clks = card->csd.taac_clks * mult;
unsigned int timeout_us;
/* Avoid overflow: e.g. tacc_ns=80000000 mult=1280 */
if (card->csd.tacc_ns < 1000000)
timeout_us = (card->csd.tacc_ns * mult) / 1000;
/* Avoid overflow: e.g. taac_ns=80000000 mult=1280 */
if (card->csd.taac_ns < 1000000)
timeout_us = (card->csd.taac_ns * mult) / 1000;
else
timeout_us = (card->csd.tacc_ns / 1000) * mult;
timeout_us = (card->csd.taac_ns / 1000) * mult;
/*
* ios.clock is only a target. The real clock rate might be

8
drivers/mmc/core/mmc.c
View File

@ -41,11 +41,11 @@ static const unsigned char tran_mant[] = {
35, 40, 45, 50, 55, 60, 70, 80,
};
static const unsigned int tacc_exp[] = {
static const unsigned int taac_exp[] = {
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
};
static const unsigned int tacc_mant[] = {
static const unsigned int taac_mant[] = {
0, 10, 12, 13, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60, 70, 80,
};
@ -153,8 +153,8 @@ static int mmc_decode_csd(struct mmc_card *card)
csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4);
m = UNSTUFF_BITS(resp, 115, 4);
e = UNSTUFF_BITS(resp, 112, 3);
csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10;
csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
m = UNSTUFF_BITS(resp, 99, 4);
e = UNSTUFF_BITS(resp, 96, 3);

12
drivers/mmc/core/sd.c
View File

@ -39,11 +39,11 @@ static const unsigned char tran_mant[] = {
35, 40, 45, 50, 55, 60, 70, 80,
};
static const unsigned int tacc_exp[] = {
static const unsigned int taac_exp[] = {
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
};
static const unsigned int tacc_mant[] = {
static const unsigned int taac_mant[] = {
0, 10, 12, 13, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60, 70, 80,
};
@ -111,8 +111,8 @@ static int mmc_decode_csd(struct mmc_card *card)
case 0:
m = UNSTUFF_BITS(resp, 115, 4);
e = UNSTUFF_BITS(resp, 112, 3);
csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10;
csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
m = UNSTUFF_BITS(resp, 99, 4);
e = UNSTUFF_BITS(resp, 96, 3);
@ -148,8 +148,8 @@ static int mmc_decode_csd(struct mmc_card *card)
*/
mmc_card_set_blockaddr(card);
csd->tacc_ns = 0; /* Unused */
csd->tacc_clks = 0; /* Unused */
csd->taac_ns = 0; /* Unused */
csd->taac_clks = 0; /* Unused */
m = UNSTUFF_BITS(resp, 99, 4);
e = UNSTUFF_BITS(resp, 96, 3);

4
include/linux/mmc/card.h
View File

@ -29,8 +29,8 @@ struct mmc_csd {
unsigned char structure;
unsigned char mmca_vsn;
unsigned short cmdclass;
unsigned short tacc_clks;
unsigned int tacc_ns;
unsigned short taac_clks;
unsigned int taac_ns;
unsigned int c_size;
unsigned int r2w_factor;
unsigned int max_dtr;