mmc: rockchip_sdhci: Add set_clock and config_dll sdhci_ops

Add support for the set_clock and config_dll sdhci_ops. Use of these ops
will allow configuration of DLL while the output clock is disabled.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index e64c0fdb4cc81858bb64314c12a7457fdf69212d..4a41e727017dd4cfa5b36d39e22f35c5a081d2cf 100644 (file)
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -139,6 +139,9 @@ struct sdhci_data {
         */
        int (*set_ios_post)(struct sdhci_host *host);
 
+       void (*set_clock)(struct sdhci_host *host, u32 div);
+       int (*config_dll)(struct sdhci_host *host, u32 clock, bool enable);
+
        /**
         * set_enhanced_strobe() - Set HS400 Enhanced Strobe config
         *
@@ -430,6 +433,15 @@ static int rockchip_sdhci_set_ios_post(struct sdhci_host *host)
        return 0;
 }
 
+static void rockchip_sdhci_set_clock(struct sdhci_host *host, u32 div)
+{
+       struct rockchip_sdhc *priv = container_of(host, struct rockchip_sdhc, host);
+       struct sdhci_data *data = (struct sdhci_data *)dev_get_driver_data(priv->dev);
+
+       if (data->set_clock)
+               data->set_clock(host, div);
+}
+
 static int rockchip_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
 {
        struct rockchip_sdhc *priv = dev_get_priv(mmc->dev);
@@ -491,6 +503,17 @@ static int rockchip_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
        return ret;
 }
 
+static int rockchip_sdhci_config_dll(struct sdhci_host *host, u32 clock, bool enable)
+{
+       struct rockchip_sdhc *priv = container_of(host, struct rockchip_sdhc, host);
+       struct sdhci_data *data = (struct sdhci_data *)dev_get_driver_data(priv->dev);
+
+       if (data->config_dll)
+               return data->config_dll(host, clock, enable);
+
+       return 0;
+}
+
 static int rockchip_sdhci_set_enhanced_strobe(struct sdhci_host *host)
 {
        struct rockchip_sdhc *priv = container_of(host, struct rockchip_sdhc, host);
@@ -503,9 +526,11 @@ static int rockchip_sdhci_set_enhanced_strobe(struct sdhci_host *host)
 }
 
 static struct sdhci_ops rockchip_sdhci_ops = {
-       .set_ios_post   = rockchip_sdhci_set_ios_post,
-       .platform_execute_tuning = &rockchip_sdhci_execute_tuning,
        .set_control_reg = rockchip_sdhci_set_control_reg,
+       .set_ios_post = rockchip_sdhci_set_ios_post,
+       .set_clock = rockchip_sdhci_set_clock,
+       .platform_execute_tuning = rockchip_sdhci_execute_tuning,
+       .config_dll = rockchip_sdhci_config_dll,
        .set_enhanced_strobe = rockchip_sdhci_set_enhanced_strobe,
 };