mmc: tmio: mmc: tmio: tmio_mmc_data has .chan_priv_?x

dma_request_slave_channel_compat() in tmio_mmc_dma
needs .chan_priv_tx/.chan_priv_rx. But these are copied from
sh_mobile_sdhi only, and sh_mobile_sdhi_info is now almost
same as tmio_mmc_data except .chan_priv_?x.
sh_mobile_sdhi_info can be replaced to tmio_mmc_data, but it is
used from ${LINUX}/arch/arm/mach-shmobile, ${LINUX}/arch/sh.
So, this patch adds .chan_priv_?x into tmio_mmc_data as 1st step,
and sh_mobile_sdhi driver has dummy operation for now.
It will be replaced/removed together with platform data replace.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

3 files changed, 30 insertions, 22 deletions

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 11991f5f3fef..3137e292270e 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -201,6 +201,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
                 of_match_device(sh_mobile_sdhi_of_match, &pdev->dev);
         struct sh_mobile_sdhi *priv;
         struct tmio_mmc_data *mmc_data;
+        struct tmio_mmc_data *mmd = pdev->dev.platform_data;
         struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
         struct tmio_mmc_host *host;
         struct resource *res;
@@ -245,28 +246,37 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
         else
                 host->bus_shift = 0;
 
-        mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
-        if (p) {
-                mmc_data->flags = p->tmio_flags;
-                mmc_data->ocr_mask = p->tmio_ocr_mask;
-                mmc_data->capabilities |= p->tmio_caps;
-                mmc_data->capabilities2 |= p->tmio_caps2;
-                mmc_data->cd_gpio = p->cd_gpio;
-
-                if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
-                        /*
-                         * Yes, we have to provide slave IDs twice to TMIO:
-                         * once as a filter parameter and once for channel
-                         * configuration as an explicit slave ID
-                         */
-                        dma_priv->chan_priv_tx = (void *)p->dma_slave_tx;
-                        dma_priv->chan_priv_rx = (void *)p->dma_slave_rx;
-                }
+        if (mmd) {
+                /*
+                 * FIXME
+                 *
+                 * sh_mobile_sdhi_info will be replaced to tmio_mmc_data soon.
+                 * But, sh_mobile_sdhi_info is used under
+                 * ${LINUX}/arch/arm/mach-shmobile/
+                 * ${LINUX}/arch/sh/
+                 * To separate large patch into "tmio_mmc_data has .chan_priv_?x"
+                 * and "replace sh_mobile_sdhi_info in tmio_mmc_data",
+                 * here has dummy method.
+                 * These should be removed.
+                 */
+                struct tmio_mmc_data m;
+
+                mmd = &m;
+                m.flags         = p->tmio_flags;
+                m.ocr_mask      = p->tmio_ocr_mask;
+                m.capabilities  = p->tmio_caps;
+                m.capabilities2 = p->tmio_caps2;
+                m.cd_gpio       = p->cd_gpio;
+                m.chan_priv_tx  = (void *)p->dma_slave_tx;
+                m.chan_priv_rx  = (void *)p->dma_slave_rx;
+
+                *mmc_data = *mmd;
         }
         dma_priv->filter = shdma_chan_filter;
         dma_priv->enable = sh_mobile_sdhi_enable_dma;
 
         mmc_data->alignment_shift = 1; /* 2-byte alignment */
+        mmc_data->capabilities |= MMC_CAP_MMC_HIGHSPEED;
 
         /*
          * All SDHI blocks support 2-byte and larger block sizes in 4-bit
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 1aea5c67af94..4a597f5a53e2 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -43,8 +43,6 @@ struct tmio_mmc_data;
 struct tmio_mmc_host;
 
 struct tmio_mmc_dma {
-        void *chan_priv_tx;
-        void *chan_priv_rx;
         enum dma_slave_buswidth dma_buswidth;
         bool (*filter)(struct dma_chan *chan, void *arg);
         void (*enable)(struct tmio_mmc_host *host, bool enable);
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c
index 8dbd785366a6..e4b05dbb9ca8 100644
--- a/drivers/mmc/host/tmio_mmc_dma.c
+++ b/drivers/mmc/host/tmio_mmc_dma.c
@@ -261,7 +261,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
 {
         /* We can only either use DMA for both Tx and Rx or not use it at all */
         if (!host->dma || (!host->pdev->dev.of_node &&
-                (!host->dma->chan_priv_tx || !host->dma->chan_priv_rx)))
+                (!pdata->chan_priv_tx || !pdata->chan_priv_rx)))
                 return;
 
         if (!host->chan_tx && !host->chan_rx) {
@@ -278,7 +278,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
                 dma_cap_set(DMA_SLAVE, mask);
 
                 host->chan_tx = dma_request_slave_channel_compat(mask,
-                                        host->dma->filter, host->dma->chan_priv_tx,
+                                        host->dma->filter, pdata->chan_priv_tx,
                                         &host->pdev->dev, "tx");
                 dev_dbg(&host->pdev->dev, "%s: TX: got channel %p\n", __func__,
                         host->chan_tx);
@@ -297,7 +297,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
                         goto ecfgtx;
 
                 host->chan_rx = dma_request_slave_channel_compat(mask,
-                                        host->dma->filter, host->dma->chan_priv_rx,
+                                        host->dma->filter, pdata->chan_priv_rx,
                                         &host->pdev->dev, "rx");
                 dev_dbg(&host->pdev->dev, "%s: RX: got channel %p\n", __func__,
                         host->chan_rx);