[U-Boot] [UBOOT PATCH v3 4/7] mmc: sdhci: Invoke platform specific tuning and delay routines

[Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>]

From: Siva Durga Prasad Paladugu <sivadur@xilinx.com>

This patch adds support to invoke any platform specific tuning
and delay routines if available.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
---
 drivers/mmc/sdhci.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 2ce3b57..c17ab12 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -306,6 +306,24 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
                return -ECOMM;
 }

+#if defined(CONFIG_DM_MMC) && defined(MMC_SUPPORTS_TUNING)
+static int sdhci_execute_tuning(struct udevice *dev, uint opcode)
+{
+       int err;
+       struct mmc *mmc = mmc_get_mmc_dev(dev);
+       struct sdhci_host *host = mmc->priv;
+
+       debug("%s\n", __func__);
+
+       if (host->ops->platform_execute_tuning) {
+               err = host->ops->platform_execute_tuning(mmc, opcode);
+               if (err)
+                       return err;
+               return 0;
+       }
+       return 0;
+}
+#endif
 static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
 {
        struct sdhci_host *host = mmc->priv;
@@ -330,6 +348,9 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
        if (clock == 0)
                return 0;

+       if (host->ops->set_delay)
+               host->ops->set_delay(host);
+
        if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
                /*
                 * Check if the Host Controller supports Programmable Clock
@@ -521,6 +542,9 @@ int sdhci_probe(struct udevice *dev)
 const struct dm_mmc_ops sdhci_ops = {
        .send_cmd       = sdhci_send_command,
        .set_ios        = sdhci_set_ios,
+#ifdef MMC_SUPPORTS_TUNING
+       .execute_tuning = sdhci_execute_tuning,
+#endif
 };
 #else
 static const struct mmc_ops sdhci_ops = {
--
2.7.4

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