aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mmc/mmc.c
diff options
context:
space:
mode:
authorJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-10 14:47:26 -0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-10 14:47:26 -0400
commitf0cd91a68acdc9b49d7f6738b514a426da627649 (patch)
tree8ad73564015794197583b094217ae0a71e71e753 /drivers/mmc/mmc.c
parent60eef25701d25e99c991dd0f4a9f3832a0c3ad3e (diff)
parent128e6ced247cda88f96fa9f2e4ba8b2c4a681560 (diff)
Merge ../linux-2.6
Diffstat (limited to 'drivers/mmc/mmc.c')
-rw-r--r--drivers/mmc/mmc.c63
1 files changed, 41 insertions, 22 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index da6ddd910fc5..6201f3086a02 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -59,21 +59,23 @@ static const unsigned int tacc_mant[] = {
59 59
60 60
61/** 61/**
62 * mmc_request_done - finish processing an MMC command 62 * mmc_request_done - finish processing an MMC request
63 * @host: MMC host which completed command 63 * @host: MMC host which completed request
64 * @mrq: MMC request which completed 64 * @mrq: MMC request which request
65 * 65 *
66 * MMC drivers should call this function when they have completed 66 * MMC drivers should call this function when they have completed
67 * their processing of a command. This should be called before the 67 * their processing of a request.
68 * data part of the command has completed.
69 */ 68 */
70void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) 69void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
71{ 70{
72 struct mmc_command *cmd = mrq->cmd; 71 struct mmc_command *cmd = mrq->cmd;
73 int err = mrq->cmd->error; 72 int err = cmd->error;
74 pr_debug("MMC: req done (%02x): %d: %08x %08x %08x %08x\n", 73
75 cmd->opcode, err, cmd->resp[0], cmd->resp[1], 74 pr_debug("%s: req done (CMD%u): %d/%d/%d: %08x %08x %08x %08x\n",
76 cmd->resp[2], cmd->resp[3]); 75 mmc_hostname(host), cmd->opcode, err,
76 mrq->data ? mrq->data->error : 0,
77 mrq->stop ? mrq->stop->error : 0,
78 cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
77 79
78 if (err && cmd->retries) { 80 if (err && cmd->retries) {
79 cmd->retries--; 81 cmd->retries--;
@@ -97,8 +99,9 @@ EXPORT_SYMBOL(mmc_request_done);
97void 99void
98mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) 100mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
99{ 101{
100 pr_debug("MMC: starting cmd %02x arg %08x flags %08x\n", 102 pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
101 mrq->cmd->opcode, mrq->cmd->arg, mrq->cmd->flags); 103 mmc_hostname(host), mrq->cmd->opcode,
104 mrq->cmd->arg, mrq->cmd->flags);
102 105
103 WARN_ON(host->card_busy == NULL); 106 WARN_ON(host->card_busy == NULL);
104 107
@@ -312,6 +315,18 @@ void mmc_release_host(struct mmc_host *host)
312 315
313EXPORT_SYMBOL(mmc_release_host); 316EXPORT_SYMBOL(mmc_release_host);
314 317
318static inline void mmc_set_ios(struct mmc_host *host)
319{
320 struct mmc_ios *ios = &host->ios;
321
322 pr_debug("%s: clock %uHz busmode %u powermode %u cs %u Vdd %u width %u\n",
323 mmc_hostname(host), ios->clock, ios->bus_mode,
324 ios->power_mode, ios->chip_select, ios->vdd,
325 ios->bus_width);
326
327 host->ops->set_ios(host, ios);
328}
329
315static int mmc_select_card(struct mmc_host *host, struct mmc_card *card) 330static int mmc_select_card(struct mmc_host *host, struct mmc_card *card)
316{ 331{
317 int err; 332 int err;
@@ -364,7 +379,7 @@ static int mmc_select_card(struct mmc_host *host, struct mmc_card *card)
364 } 379 }
365 } 380 }
366 381
367 host->ops->set_ios(host, &host->ios); 382 mmc_set_ios(host);
368 383
369 return MMC_ERR_NONE; 384 return MMC_ERR_NONE;
370} 385}
@@ -415,7 +430,7 @@ static u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
415 ocr = 3 << bit; 430 ocr = 3 << bit;
416 431
417 host->ios.vdd = bit; 432 host->ios.vdd = bit;
418 host->ops->set_ios(host, &host->ios); 433 mmc_set_ios(host);
419 } else { 434 } else {
420 ocr = 0; 435 ocr = 0;
421 } 436 }
@@ -549,6 +564,7 @@ static void mmc_decode_csd(struct mmc_card *card)
549 csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 564 csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
550 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 565 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
551 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 566 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
567 csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
552 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 568 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
553 csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 569 csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
554 } else { 570 } else {
@@ -583,6 +599,7 @@ static void mmc_decode_csd(struct mmc_card *card)
583 csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 599 csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
584 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 600 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
585 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 601 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
602 csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
586 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 603 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
587 csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 604 csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
588 } 605 }
@@ -666,7 +683,7 @@ static void mmc_idle_cards(struct mmc_host *host)
666 struct mmc_command cmd; 683 struct mmc_command cmd;
667 684
668 host->ios.chip_select = MMC_CS_HIGH; 685 host->ios.chip_select = MMC_CS_HIGH;
669 host->ops->set_ios(host, &host->ios); 686 mmc_set_ios(host);
670 687
671 mmc_delay(1); 688 mmc_delay(1);
672 689
@@ -679,7 +696,7 @@ static void mmc_idle_cards(struct mmc_host *host)
679 mmc_delay(1); 696 mmc_delay(1);
680 697
681 host->ios.chip_select = MMC_CS_DONTCARE; 698 host->ios.chip_select = MMC_CS_DONTCARE;
682 host->ops->set_ios(host, &host->ios); 699 mmc_set_ios(host);
683 700
684 mmc_delay(1); 701 mmc_delay(1);
685} 702}
@@ -704,13 +721,13 @@ static void mmc_power_up(struct mmc_host *host)
704 host->ios.chip_select = MMC_CS_DONTCARE; 721 host->ios.chip_select = MMC_CS_DONTCARE;
705 host->ios.power_mode = MMC_POWER_UP; 722 host->ios.power_mode = MMC_POWER_UP;
706 host->ios.bus_width = MMC_BUS_WIDTH_1; 723 host->ios.bus_width = MMC_BUS_WIDTH_1;
707 host->ops->set_ios(host, &host->ios); 724 mmc_set_ios(host);
708 725
709 mmc_delay(1); 726 mmc_delay(1);
710 727
711 host->ios.clock = host->f_min; 728 host->ios.clock = host->f_min;
712 host->ios.power_mode = MMC_POWER_ON; 729 host->ios.power_mode = MMC_POWER_ON;
713 host->ops->set_ios(host, &host->ios); 730 mmc_set_ios(host);
714 731
715 mmc_delay(2); 732 mmc_delay(2);
716} 733}
@@ -723,7 +740,7 @@ static void mmc_power_off(struct mmc_host *host)
723 host->ios.chip_select = MMC_CS_DONTCARE; 740 host->ios.chip_select = MMC_CS_DONTCARE;
724 host->ios.power_mode = MMC_POWER_OFF; 741 host->ios.power_mode = MMC_POWER_OFF;
725 host->ios.bus_width = MMC_BUS_WIDTH_1; 742 host->ios.bus_width = MMC_BUS_WIDTH_1;
726 host->ops->set_ios(host, &host->ios); 743 mmc_set_ios(host);
727} 744}
728 745
729static int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) 746static int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
@@ -934,6 +951,7 @@ static void mmc_read_scrs(struct mmc_host *host)
934 data.timeout_ns = card->csd.tacc_ns * 10; 951 data.timeout_ns = card->csd.tacc_ns * 10;
935 data.timeout_clks = card->csd.tacc_clks * 10; 952 data.timeout_clks = card->csd.tacc_clks * 10;
936 data.blksz_bits = 3; 953 data.blksz_bits = 3;
954 data.blksz = 1 << 3;
937 data.blocks = 1; 955 data.blocks = 1;
938 data.flags = MMC_DATA_READ; 956 data.flags = MMC_DATA_READ;
939 data.sg = &sg; 957 data.sg = &sg;
@@ -971,7 +989,8 @@ static unsigned int mmc_calculate_clock(struct mmc_host *host)
971 if (!mmc_card_dead(card) && max_dtr > card->csd.max_dtr) 989 if (!mmc_card_dead(card) && max_dtr > card->csd.max_dtr)
972 max_dtr = card->csd.max_dtr; 990 max_dtr = card->csd.max_dtr;
973 991
974 pr_debug("MMC: selected %d.%03dMHz transfer rate\n", 992 pr_debug("%s: selected %d.%03dMHz transfer rate\n",
993 mmc_hostname(host),
975 max_dtr / 1000000, (max_dtr / 1000) % 1000); 994 max_dtr / 1000000, (max_dtr / 1000) % 1000);
976 995
977 return max_dtr; 996 return max_dtr;
@@ -1046,7 +1065,7 @@ static void mmc_setup(struct mmc_host *host)
1046 } else { 1065 } else {
1047 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN; 1066 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
1048 host->ios.clock = host->f_min; 1067 host->ios.clock = host->f_min;
1049 host->ops->set_ios(host, &host->ios); 1068 mmc_set_ios(host);
1050 1069
1051 /* 1070 /*
1052 * We should remember the OCR mask from the existing 1071 * We should remember the OCR mask from the existing
@@ -1082,7 +1101,7 @@ static void mmc_setup(struct mmc_host *host)
1082 * Ok, now switch to push-pull mode. 1101 * Ok, now switch to push-pull mode.
1083 */ 1102 */
1084 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL; 1103 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
1085 host->ops->set_ios(host, &host->ios); 1104 mmc_set_ios(host);
1086 1105
1087 mmc_read_csds(host); 1106 mmc_read_csds(host);
1088 1107
@@ -1128,7 +1147,7 @@ static void mmc_rescan(void *data)
1128 * attached cards and the host support. 1147 * attached cards and the host support.
1129 */ 1148 */
1130 host->ios.clock = mmc_calculate_clock(host); 1149 host->ios.clock = mmc_calculate_clock(host);
1131 host->ops->set_ios(host, &host->ios); 1150 mmc_set_ios(host);
1132 } 1151 }
1133 1152
1134 mmc_release_host(host); 1153 mmc_release_host(host);