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sd-as3525v2.c Implement HS timings for those cards that are capable.

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The internal card does not appear to be HS capable, at least not in 2GB clip+

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25316 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jack Halpin 2010-03-24 05:41:33 +00:00
parent 0466a11028
commit 9d9c090cba
1 changed files with 21 additions and 2 deletions
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23
firmware/target/arm/as3525/sd-as3525v2.c
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@ -318,6 +318,7 @@ static unsigned char aligned_buffer[UNALIGNED_NUM_SECTORS* SD_BLOCK_SIZE] __attr
static unsigned char *uncached_buffer = UNCACHED_ADDR(&aligned_buffer[0]);
static void init_controller(void);
static int sd_wait_for_state(const int drive, unsigned int state);
static tCardInfo card_info[NUM_DRIVES];
@ -487,10 +488,28 @@ static int sd_init_card(const int drive)
#endif
/* End of Card Identification Mode ************************************/
/* Attempt to switch cards to HS timings, non HS cards just ignore this */
/* CMD7 w/rca: Select card to put it in TRAN state */
if(!send_cmd(drive, SD_SELECT_CARD, card_info[drive].rca, MCI_RESP, &response))
return -7;
if(sd_wait_for_state(drive, SD_TRAN))
return -8;
/* CMD6 */
if(!send_cmd(drive, SD_SWITCH_FUNC, 0x80fffff1, MCI_NO_RESP, NULL))
return -9;
mci_delay();
/* We need to go back to STBY state now so we can read csd */
/* CMD7 w/rca=0: Deselect card to put it in STBY state */
if(!send_cmd(drive, SD_DESELECT_CARD, 0, MCI_RESP, &response))
return -10;
/* CMD9 send CSD */
if(!send_cmd(drive, SD_SEND_CSD, card_info[drive].rca,
MCI_RESP|MCI_LONG_RESP, card_info[drive].csd))
return -7;
return -11;
sd_parse_csd(&card_info[drive]);
@ -500,7 +519,7 @@ static int sd_init_card(const int drive)
#ifndef HAVE_MULTIDRIVE
/* CMD7 w/rca: Select card to put it in TRAN state */
if(!send_cmd(drive, SD_SELECT_CARD, card_info[drive].rca, MCI_NO_RESP, NULL))
return -8;
return -12;
#endif
card_info[drive].initialized = 1;