From: Richard Zhu <r65037@freescale.com> To: linux-mmc@vger.kernel.org Cc: Richard Zhu <r65037@freescale.com>, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de Subject: [PATCH 5/9] sdhci-5:add the 32BIT_CMD_TRANS_COMBINATION quirk to support FSl eSDHC Date: Wed, 1 Sep 2010 17:48:14 +0800 [thread overview] Message-ID: <1283334494-12678-1-git-send-email-r65037@freescale.com> (raw) The FSL's eSDHC have one 32bit register that combine the two 16bit Transfer Mode and Command registers. Add this quirk to let SW driver to support FSL's eSDHC. Signed-off-by: Richard Zhu <r65037@freescale.com> --- drivers/mmc/host/sdhci.c | 25 +++++++++++++++++++++++-- drivers/mmc/host/sdhci.h | 2 ++ 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index e58939a..70b7f9d 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -932,7 +932,22 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); - sdhci_set_transfer_mode(host, cmd->data); + if (host->quirks & SDHCI_QUIRK_32BIT_CMD_TRANS_COMBINATION) { + /* Set up the transfer mode */ + if (cmd->data != NULL) { + mask = SDHCI_TRNS_BLK_CNT_EN; + if (cmd->data->blocks > 1) + mask |= SDHCI_TRNS_MULTI; + if (cmd->data->flags & MMC_DATA_READ) + mask |= SDHCI_TRNS_READ; + else + mask &= ~SDHCI_TRNS_READ; + if (host->flags & SDHCI_REQ_USE_DMA) + mask |= SDHCI_TRNS_DMA; + } + + } else + sdhci_set_transfer_mode(host, cmd->data); if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { printk(KERN_ERR "%s: Unsupported response type!\n", @@ -958,7 +973,13 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) if (cmd->data) flags |= SDHCI_CMD_DATA; - sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); + if (host->quirks & SDHCI_QUIRK_32BIT_CMD_TRANS_COMBINATION) { + mask |= SDHCI_MAKE_CMD(cmd->opcode, flags) << 16; + + sdhci_writel(host, mask, SDHCI_TRANSFER_MODE); + } else + sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), + SDHCI_COMMAND); } static void sdhci_finish_command(struct sdhci_host *host) diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 37e9e3e..bb98378 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -247,6 +247,8 @@ struct sdhci_host { #define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) /* Controller doesn't have the standard Host Control registor */ #define SDHCI_QUIRK_NONSTANDARD_HOST_CTL (1<<29) +/* Controller has the CMD and TRANS MODE combination */ +#define SDHCI_QUIRK_32BIT_CMD_TRANS_COMBINATION (1<<30) int irq; /* Device IRQ */ void __iomem * ioaddr; /* Mapped address */ -- 1.7.0
WARNING: multiple messages have this Message-ID (diff)
From: r65037@freescale.com (Richard Zhu) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 5/9] sdhci-5:add the 32BIT_CMD_TRANS_COMBINATION quirk to support FSl eSDHC Date: Wed, 1 Sep 2010 17:48:14 +0800 [thread overview] Message-ID: <1283334494-12678-1-git-send-email-r65037@freescale.com> (raw) The FSL's eSDHC have one 32bit register that combine the two 16bit Transfer Mode and Command registers. Add this quirk to let SW driver to support FSL's eSDHC. Signed-off-by: Richard Zhu <r65037@freescale.com> --- drivers/mmc/host/sdhci.c | 25 +++++++++++++++++++++++-- drivers/mmc/host/sdhci.h | 2 ++ 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index e58939a..70b7f9d 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -932,7 +932,22 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); - sdhci_set_transfer_mode(host, cmd->data); + if (host->quirks & SDHCI_QUIRK_32BIT_CMD_TRANS_COMBINATION) { + /* Set up the transfer mode */ + if (cmd->data != NULL) { + mask = SDHCI_TRNS_BLK_CNT_EN; + if (cmd->data->blocks > 1) + mask |= SDHCI_TRNS_MULTI; + if (cmd->data->flags & MMC_DATA_READ) + mask |= SDHCI_TRNS_READ; + else + mask &= ~SDHCI_TRNS_READ; + if (host->flags & SDHCI_REQ_USE_DMA) + mask |= SDHCI_TRNS_DMA; + } + + } else + sdhci_set_transfer_mode(host, cmd->data); if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { printk(KERN_ERR "%s: Unsupported response type!\n", @@ -958,7 +973,13 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) if (cmd->data) flags |= SDHCI_CMD_DATA; - sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); + if (host->quirks & SDHCI_QUIRK_32BIT_CMD_TRANS_COMBINATION) { + mask |= SDHCI_MAKE_CMD(cmd->opcode, flags) << 16; + + sdhci_writel(host, mask, SDHCI_TRANSFER_MODE); + } else + sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), + SDHCI_COMMAND); } static void sdhci_finish_command(struct sdhci_host *host) diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 37e9e3e..bb98378 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -247,6 +247,8 @@ struct sdhci_host { #define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) /* Controller doesn't have the standard Host Control registor */ #define SDHCI_QUIRK_NONSTANDARD_HOST_CTL (1<<29) +/* Controller has the CMD and TRANS MODE combination */ +#define SDHCI_QUIRK_32BIT_CMD_TRANS_COMBINATION (1<<30) int irq; /* Device IRQ */ void __iomem * ioaddr; /* Mapped address */ -- 1.7.0
next reply other threads:[~2010-09-01 9:48 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-09-01 9:48 Richard Zhu [this message] 2010-09-01 9:48 ` [PATCH 5/9] sdhci-5:add the 32BIT_CMD_TRANS_COMBINATION quirk to support FSl eSDHC Richard Zhu 2010-09-01 17:52 ` Michał Mirosław 2010-09-01 17:52 ` Michał Mirosław
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