diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
-rw-r--r-- | drivers/mmc/host/sdhci.c | 57 |
1 files changed, 42 insertions, 15 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 0636e9a..96f4e54 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -49,7 +49,7 @@ static void sdhci_finish_data(struct sdhci_host *); static void sdhci_send_command(struct sdhci_host *, struct mmc_command *); static void sdhci_finish_command(struct sdhci_host *); -static int sdhci_execute_tuning(struct mmc_host *mmc); +static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); static void sdhci_tuning_timer(unsigned long data); #ifdef CONFIG_PM_RUNTIME @@ -1014,7 +1014,8 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) flags |= SDHCI_CMD_INDEX; /* CMD19 is special in that the Data Present Select should be set */ - if (cmd->data || (cmd->opcode == MMC_SEND_TUNING_BLOCK)) + if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || + cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) flags |= SDHCI_CMD_DATA; sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); @@ -1287,7 +1288,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) if ((host->flags & SDHCI_NEEDS_RETUNING) && !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { spin_unlock_irqrestore(&host->lock, flags); - sdhci_execute_tuning(mmc); + sdhci_execute_tuning(mmc, mrq->cmd->opcode); spin_lock_irqsave(&host->lock, flags); /* Restore original mmc_request structure */ @@ -1382,7 +1383,8 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) unsigned int clock; /* In case of UHS-I modes, set High Speed Enable */ - if ((ios->timing == MMC_TIMING_UHS_SDR50) || + if ((ios->timing == MMC_TIMING_MMC_HS200) || + (ios->timing == MMC_TIMING_UHS_SDR50) || (ios->timing == MMC_TIMING_UHS_SDR104) || (ios->timing == MMC_TIMING_UHS_DDR50) || (ios->timing == MMC_TIMING_UHS_SDR25)) @@ -1435,7 +1437,9 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); /* Select Bus Speed Mode for host */ ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; - if (ios->timing == MMC_TIMING_UHS_SDR12) + if (ios->timing == MMC_TIMING_MMC_HS200) + ctrl_2 |= SDHCI_CTRL_HS_SDR200; + else if (ios->timing == MMC_TIMING_UHS_SDR12) ctrl_2 |= SDHCI_CTRL_UHS_SDR12; else if (ios->timing == MMC_TIMING_UHS_SDR25) ctrl_2 |= SDHCI_CTRL_UHS_SDR25; @@ -1682,7 +1686,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, return err; } -static int sdhci_execute_tuning(struct mmc_host *mmc) +static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct sdhci_host *host; u16 ctrl; @@ -1690,6 +1694,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) int tuning_loop_counter = MAX_TUNING_LOOP; unsigned long timeout; int err = 0; + bool requires_tuning_nonuhs = false; host = mmc_priv(mmc); @@ -1700,13 +1705,19 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); /* - * Host Controller needs tuning only in case of SDR104 mode - * and for SDR50 mode when Use Tuning for SDR50 is set in + * The Host Controller needs tuning only in case of SDR104 mode + * and for SDR50 mode when Use Tuning for SDR50 is set in the * Capabilities register. + * If the Host Controller supports the HS200 mode then the + * tuning function has to be executed. */ + if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && + (host->flags & SDHCI_SDR50_NEEDS_TUNING || + host->flags & SDHCI_HS200_NEEDS_TUNING)) + requires_tuning_nonuhs = true; + if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) || - (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && - (host->flags & SDHCI_SDR50_NEEDS_TUNING))) + requires_tuning_nonuhs) ctrl |= SDHCI_CTRL_EXEC_TUNING; else { spin_unlock(&host->lock); @@ -1742,7 +1753,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) if (!tuning_loop_counter && !timeout) break; - cmd.opcode = MMC_SEND_TUNING_BLOCK; + cmd.opcode = opcode; cmd.arg = 0; cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; cmd.retries = 0; @@ -1757,7 +1768,17 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) * block to the Host Controller. So we set the block size * to 64 here. */ - sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), SDHCI_BLOCK_SIZE); + if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200) { + if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) + sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128), + SDHCI_BLOCK_SIZE); + else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) + sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), + SDHCI_BLOCK_SIZE); + } else { + sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), + SDHCI_BLOCK_SIZE); + } /* * The tuning block is sent by the card to the host controller. @@ -2140,12 +2161,14 @@ static void sdhci_show_adma_error(struct sdhci_host *host) { } static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) { + u32 command; BUG_ON(intmask == 0); /* CMD19 generates _only_ Buffer Read Ready interrupt */ if (intmask & SDHCI_INT_DATA_AVAIL) { - if (SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) == - MMC_SEND_TUNING_BLOCK) { + command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)); + if (command == MMC_SEND_TUNING_BLOCK || + command == MMC_SEND_TUNING_BLOCK_HS200) { host->tuning_done = 1; wake_up(&host->buf_ready_int); return; @@ -2747,10 +2770,14 @@ int sdhci_add_host(struct sdhci_host *host) if (caps[1] & SDHCI_SUPPORT_DDR50) mmc->caps |= MMC_CAP_UHS_DDR50; - /* Does the host needs tuning for SDR50? */ + /* Does the host need tuning for SDR50? */ if (caps[1] & SDHCI_USE_SDR50_TUNING) host->flags |= SDHCI_SDR50_NEEDS_TUNING; + /* Does the host need tuning for HS200? */ + if (mmc->caps2 & MMC_CAP2_HS200) + host->flags |= SDHCI_HS200_NEEDS_TUNING; + /* Driver Type(s) (A, C, D) supported by the host */ if (caps[1] & SDHCI_DRIVER_TYPE_A) mmc->caps |= MMC_CAP_DRIVER_TYPE_A; |