mmc: tmio: remove Renesas specific #ifdef

This patch adds new TMIO_MMC_HAVE_CTL_DMA_REG flag,
and remove Renesas specific #ifdef from tmio driver

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sh_mobile_sdhi.c

@@ -235,6 +235,11 @@ 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

@@ -28,10 +28,8 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
 	if (!host->chan_tx || !host->chan_rx)
 		return;
 
-#if defined(CONFIG_SUPERH) || defined(CONFIG_ARCH_SHMOBILE)
-	/* Switch DMA mode on or off - SuperH specific? */
-	sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
-#endif
+	if (host->pdata->flags & TMIO_MMC_HAVE_CTL_DMA_REG)
+		sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
 }
 
 void tmio_mmc_abort_dma(struct tmio_mmc_host *host)

include/linux/mfd/tmio.h

@@ -94,6 +94,11 @@
  */
 #define TMIO_MMC_SDIO_STATUS_QUIRK	(1 << 8)
 
+/*
+ * Some controllers have DMA enable/disable register
+ */
+#define TMIO_MMC_HAVE_CTL_DMA_REG	(1 << 9)
+
 int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
 int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
 void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);