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path: root/drivers/mmc/au1xmmc.c
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Diffstat (limited to 'drivers/mmc/au1xmmc.c')
-rw-r--r--drivers/mmc/au1xmmc.c59
1 files changed, 30 insertions, 29 deletions
diff --git a/drivers/mmc/au1xmmc.c b/drivers/mmc/au1xmmc.c
index aaf04638054e..227c39a7c1b4 100644
--- a/drivers/mmc/au1xmmc.c
+++ b/drivers/mmc/au1xmmc.c
@@ -194,7 +194,7 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
194 194
195 u32 mmccmd = (cmd->opcode << SD_CMD_CI_SHIFT); 195 u32 mmccmd = (cmd->opcode << SD_CMD_CI_SHIFT);
196 196
197 switch(cmd->flags) { 197 switch (mmc_rsp_type(cmd->flags)) {
198 case MMC_RSP_R1: 198 case MMC_RSP_R1:
199 mmccmd |= SD_CMD_RT_1; 199 mmccmd |= SD_CMD_RT_1;
200 break; 200 break;
@@ -483,34 +483,35 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
483 cmd = mrq->cmd; 483 cmd = mrq->cmd;
484 cmd->error = MMC_ERR_NONE; 484 cmd->error = MMC_ERR_NONE;
485 485
486 if ((cmd->flags & MMC_RSP_MASK) == MMC_RSP_SHORT) { 486 if (cmd->flags & MMC_RSP_PRESENT) {
487 487 if (cmd->flags & MMC_RSP_136) {
488 /* Techincally, we should be getting all 48 bits of the response 488 u32 r[4];
489 * (SD_RESP1 + SD_RESP2), but because our response omits the CRC, 489 int i;
490 * our data ends up being shifted 8 bits to the right. In this case, 490
491 * that means that the OSR data starts at bit 31, so we can just 491 r[0] = au_readl(host->iobase + SD_RESP3);
492 * read RESP0 and return that 492 r[1] = au_readl(host->iobase + SD_RESP2);
493 */ 493 r[2] = au_readl(host->iobase + SD_RESP1);
494 494 r[3] = au_readl(host->iobase + SD_RESP0);
495 cmd->resp[0] = au_readl(host->iobase + SD_RESP0); 495
496 } 496 /* The CRC is omitted from the response, so really
497 else if ((cmd->flags & MMC_RSP_MASK) == MMC_RSP_LONG) { 497 * we only got 120 bytes, but the engine expects
498 u32 r[4]; 498 * 128 bits, so we have to shift things up
499 int i; 499 */
500 500
501 r[0] = au_readl(host->iobase + SD_RESP3); 501 for(i = 0; i < 4; i++) {
502 r[1] = au_readl(host->iobase + SD_RESP2); 502 cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8;
503 r[2] = au_readl(host->iobase + SD_RESP1); 503 if (i != 3)
504 r[3] = au_readl(host->iobase + SD_RESP0); 504 cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24;
505 505 }
506 /* The CRC is omitted from the response, so really we only got 506 } else {
507 * 120 bytes, but the engine expects 128 bits, so we have to shift 507 /* Techincally, we should be getting all 48 bits of
508 * things up 508 * the response (SD_RESP1 + SD_RESP2), but because
509 */ 509 * our response omits the CRC, our data ends up
510 510 * being shifted 8 bits to the right. In this case,
511 for(i = 0; i < 4; i++) { 511 * that means that the OSR data starts at bit 31,
512 cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8; 512 * so we can just read RESP0 and return that
513 if (i != 3) cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24; 513 */
514 cmd->resp[0] = au_readl(host->iobase + SD_RESP0);
514 } 515 }
515 } 516 }
516 517