diff options
| author | Shinobu Uehara <shinobu.uehara.xc@renesas.com> | 2014-08-24 20:00:25 -0700 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-09-09 13:59:14 +0200 |
| commit | b8d11962c2d83c984d5afd091e5b725ad2fd5607 (patch) | |
| tree | e418779bef7c9c251698f7217940c3b76a77f2c2 /drivers | |
| parent | f83bfa751babb521924f6d8c93055215d2eb33cc (diff) | |
mmc: tmio: control multiple block transfer mode
Renesas SDHI has "Multiple Block Transfer Mode" settings
on SD_CMD register which controls CMD12 automatically.
This patch cares it, because
CMD12 is not needed when CMD53 (= SD_IO_RW_EXTENDED)
[Kuninori Morimoto: tidyuped for upstreaming
enabled this flags for all SH-Mobile/R-Car]
Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sh_mobile_sdhi.c | 5 | ||||
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_pio.c | 10 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index f0818cd0242..4727586b063 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -225,6 +225,11 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) */ mmc_data->flags |= TMIO_MMC_SDIO_IRQ; + /* + * All SDHI have CMD12 controll bit + */ + mmc_data->flags |= TMIO_MMC_HAVE_CMD12_CTRL; + if (of_id && of_id->data) { const struct sh_mobile_sdhi_of_data *of_data = of_id->data; mmc_data->flags |= of_data->tmio_flags; diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index 3d0ad737abe..c2804827be9 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -44,6 +44,7 @@ #include <linux/pm_qos.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> +#include <linux/mmc/sdio.h> #include <linux/scatterlist.h> #include <linux/spinlock.h> #include <linux/workqueue.h> @@ -310,6 +311,7 @@ static void tmio_mmc_done_work(struct work_struct *work) #define TRANSFER_READ 0x1000 #define TRANSFER_MULTI 0x2000 #define SECURITY_CMD 0x4000 +#define NO_CMD12_ISSUE 0x4000 /* TMIO_MMC_HAVE_CMD12_CTRL */ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command *cmd) { @@ -346,6 +348,14 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command if (data->blocks > 1) { sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x100); c |= TRANSFER_MULTI; + + /* + * Disable auto CMD12 at IO_RW_EXTENDED when + * multiple block transfer + */ + if ((host->pdata->flags & TMIO_MMC_HAVE_CMD12_CTRL) && + (cmd->opcode == SD_IO_RW_EXTENDED)) + c |= NO_CMD12_ISSUE; } if (data->flags & MMC_DATA_READ) c |= TRANSFER_READ; |