diff options
Diffstat (limited to 'drivers/mmc/core/sd_ops.c')
-rw-r--r-- | drivers/mmc/core/sd_ops.c | 59 |
1 files changed, 47 insertions, 12 deletions
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c index 491e0306b1b4..ee4029a24efd 100644 --- a/drivers/mmc/core/sd_ops.c +++ b/drivers/mmc/core/sd_ops.c @@ -33,10 +33,10 @@ static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card) if (card) { cmd.arg = card->rca << 16; - cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; } else { cmd.arg = 0; - cmd.flags = MMC_RSP_R1 | MMC_CMD_BCR; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_BCR; } err = mmc_wait_for_cmd(host, &cmd, 0); @@ -44,7 +44,7 @@ static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card) return err; /* Check that card supported application commands */ - if (!(cmd.resp[0] & R1_APP_CMD)) + if (!mmc_host_is_spi(host) && !(cmd.resp[0] & R1_APP_CMD)) return -EOPNOTSUPP; return 0; @@ -83,8 +83,14 @@ int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card, memset(&mrq, 0, sizeof(struct mmc_request)); err = mmc_app_cmd(host, card); - if (err) + if (err) { + /* no point in retrying; no APP commands allowed */ + if (mmc_host_is_spi(host)) { + if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND) + break; + } continue; + } memset(&mrq, 0, sizeof(struct mmc_request)); @@ -99,6 +105,12 @@ int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card, err = cmd->error; if (!cmd->error) break; + + /* no point in retrying illegal APP commands */ + if (mmc_host_is_spi(host)) { + if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND) + break; + } } return err; @@ -147,23 +159,36 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = SD_APP_OP_COND; - cmd.arg = ocr; - cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR; + if (mmc_host_is_spi(host)) + cmd.arg = ocr & (1 << 30); /* SPI only defines one bit */ + else + cmd.arg = ocr; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR; for (i = 100; i; i--) { err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES); if (err) break; - if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0) + /* if we're just probing, do a single pass */ + if (ocr == 0) break; + /* otherwise wait until reset completes */ + if (mmc_host_is_spi(host)) { + if (!(cmd.resp[0] & R1_SPI_IDLE)) + break; + } else { + if (cmd.resp[0] & MMC_CARD_BUSY) + break; + } + err = -ETIMEDOUT; mmc_delay(10); } - if (rocr) + if (rocr && !mmc_host_is_spi(host)) *rocr = cmd.resp[0]; return err; @@ -174,6 +199,7 @@ int mmc_send_if_cond(struct mmc_host *host, u32 ocr) struct mmc_command cmd; int err; static const u8 test_pattern = 0xAA; + u8 result_pattern; /* * To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND @@ -182,13 +208,18 @@ int mmc_send_if_cond(struct mmc_host *host, u32 ocr) */ cmd.opcode = SD_SEND_IF_COND; cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | test_pattern; - cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR; + cmd.flags = MMC_RSP_SPI_R7 | MMC_RSP_R7 | MMC_CMD_BCR; err = mmc_wait_for_cmd(host, &cmd, 0); if (err) return err; - if ((cmd.resp[0] & 0xFF) != test_pattern) + if (mmc_host_is_spi(host)) + result_pattern = cmd.resp[1] & 0xFF; + else + result_pattern = cmd.resp[0] & 0xFF; + + if (result_pattern != test_pattern) return -EIO; return 0; @@ -229,6 +260,8 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr) BUG_ON(!card->host); BUG_ON(!scr); + /* NOTE: caller guarantees scr is heap-allocated */ + err = mmc_app_cmd(card->host, card); if (err) return err; @@ -242,7 +275,7 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr) cmd.opcode = SD_APP_SEND_SCR; cmd.arg = 0; - cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; data.blksz = 8; data.blocks = 1; @@ -278,6 +311,8 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group, BUG_ON(!card); BUG_ON(!card->host); + /* NOTE: caller guarantees resp is heap-allocated */ + mode = !!mode; value &= 0xF; @@ -292,7 +327,7 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group, cmd.arg = mode << 31 | 0x00FFFFFF; cmd.arg &= ~(0xF << (group * 4)); cmd.arg |= value << (group * 4); - cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; + cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; data.blksz = 64; data.blocks = 1; |