mmc: tmio: remove TMIO_MMC_HAVE_CTL_DMA_REG flag

tmio_mmc_host has .enable_dma callback now.
We don't need TMIO_MMC_HAVE_CTL_DMA_REG anymore.
Let's remove it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sh_mobile_sdhi.c

@@ -291,11 +291,6 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
 	 */
 	mmc_data->flags |= TMIO_MMC_SDIO_STATUS_QUIRK;
 
-	/*
-	 * All SDHI have DMA control register
-	 */
-	mmc_data->flags |= TMIO_MMC_HAVE_CTL_DMA_REG;
-
 	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;

drivers/mmc/host/tmio_mmc_dma.c

@@ -28,9 +28,6 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
 	if (!host->chan_tx || !host->chan_rx)
 		return;
 
-	if (host->pdata->flags & TMIO_MMC_HAVE_CTL_DMA_REG)
-		sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
-
 	if (host->dma->enable)
 		host->dma->enable(host, enable);
 }

include/linux/mfd/tmio.h

@@ -95,11 +95,6 @@
  */
 #define TMIO_MMC_SDIO_STATUS_QUIRK	(1 << 8)
 
-/*
- * Some controllers have DMA enable/disable register
- */
-#define TMIO_MMC_HAVE_CTL_DMA_REG	(1 << 9)
-
 /*
  * Some controllers allows to set SDx actual clock
  */