diff mbox series

[v5,3/8] mmc: sdhci-of-dwcmshc: factor out code for th1520_init()

Message ID b774f2b62d68edab2d95d9dbd1f55cac50c6abff.1721377374.git.unicorn_wang@outlook.com (mailing list archive)
State New
Headers show
Series mmc: sdhci-of-dwcmshc: Add Sophgo SG2042 support | expand

Commit Message

Chen Wang July 19, 2024, 8:45 a.m. UTC 
From: Chen Wang <unicorn_wang@outlook.com>

Different socs have initialization operations in
the probe process, which are summarized as functions.

This patch first factor out init function for th1520.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
---
 drivers/mmc/host/sdhci-of-dwcmshc.c | 51 +++++++++++++++++------------
 1 file changed, 30 insertions(+), 21 deletions(-)

Comments

Drew Fustini July 24, 2024, 9:09 p.m. UTC | #1 
On Fri, Jul 19, 2024 at 04:45:59PM +0800, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@outlook.com>
> 
> Different socs have initialization operations in
> the probe process, which are summarized as functions.
> 
> This patch first factor out init function for th1520.
> 
> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
> ---
>  drivers/mmc/host/sdhci-of-dwcmshc.c | 51 +++++++++++++++++------------
>  1 file changed, 30 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
> index 903fe06050e4..bb0adc2ee325 100644
> --- a/drivers/mmc/host/sdhci-of-dwcmshc.c
> +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
> @@ -830,6 +830,35 @@ static void th1520_sdhci_reset(struct sdhci_host *host, u8 mask)
>  	}
>  }
>  
> +static int th1520_init(struct device *dev,
> +		       struct sdhci_host *host,
> +		       struct dwcmshc_priv *dwc_priv)
> +{
> +	dwc_priv->delay_line = PHY_SDCLKDL_DC_DEFAULT;
> +
> +	if (device_property_read_bool(dev, "mmc-ddr-1_8v") ||
> +	    device_property_read_bool(dev, "mmc-hs200-1_8v") ||
> +	    device_property_read_bool(dev, "mmc-hs400-1_8v"))
> +		dwc_priv->flags |= FLAG_IO_FIXED_1V8;
> +	else
> +		dwc_priv->flags &= ~FLAG_IO_FIXED_1V8;
> +
> +	/*
> +	 * start_signal_voltage_switch() will try 3.3V first
> +	 * then 1.8V. Use SDHCI_SIGNALING_180 rather than
> +	 * SDHCI_SIGNALING_330 to avoid setting voltage to 3.3V
> +	 * in sdhci_start_signal_voltage_switch().
> +	 */
> +	if (dwc_priv->flags & FLAG_IO_FIXED_1V8) {
> +		host->flags &= ~SDHCI_SIGNALING_330;
> +		host->flags |=  SDHCI_SIGNALING_180;
> +	}
> +
> +	sdhci_enable_v4_mode(host);
> +
> +	return 0;
> +}
> +
>  static void cv18xx_sdhci_reset(struct sdhci_host *host, u8 mask)
>  {
>  	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> @@ -1231,27 +1260,7 @@ static int dwcmshc_probe(struct platform_device *pdev)
>  	}
>  
>  	if (pltfm_data == &sdhci_dwcmshc_th1520_pdata) {
> -		priv->delay_line = PHY_SDCLKDL_DC_DEFAULT;
> -
> -		if (device_property_read_bool(dev, "mmc-ddr-1_8v") ||
> -		    device_property_read_bool(dev, "mmc-hs200-1_8v") ||
> -		    device_property_read_bool(dev, "mmc-hs400-1_8v"))
> -			priv->flags |= FLAG_IO_FIXED_1V8;
> -		else
> -			priv->flags &= ~FLAG_IO_FIXED_1V8;
> -
> -		/*
> -		 * start_signal_voltage_switch() will try 3.3V first
> -		 * then 1.8V. Use SDHCI_SIGNALING_180 rather than
> -		 * SDHCI_SIGNALING_330 to avoid setting voltage to 3.3V
> -		 * in sdhci_start_signal_voltage_switch().
> -		 */
> -		if (priv->flags & FLAG_IO_FIXED_1V8) {
> -			host->flags &= ~SDHCI_SIGNALING_330;
> -			host->flags |=  SDHCI_SIGNALING_180;
> -		}
> -
> -		sdhci_enable_v4_mode(host);
> +		th1520_init(dev, host, priv);
>  	}
>  
>  #ifdef CONFIG_ACPI
> -- 
> 2.34.1
> 

Reviewd-by: Drew Fustini <drew@pdp7.com>
diff mbox series

Patch

diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index 903fe06050e4..bb0adc2ee325 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -830,6 +830,35 @@  static void th1520_sdhci_reset(struct sdhci_host *host, u8 mask)
 	}
 }
 
+static int th1520_init(struct device *dev,
+		       struct sdhci_host *host,
+		       struct dwcmshc_priv *dwc_priv)
+{
+	dwc_priv->delay_line = PHY_SDCLKDL_DC_DEFAULT;
+
+	if (device_property_read_bool(dev, "mmc-ddr-1_8v") ||
+	    device_property_read_bool(dev, "mmc-hs200-1_8v") ||
+	    device_property_read_bool(dev, "mmc-hs400-1_8v"))
+		dwc_priv->flags |= FLAG_IO_FIXED_1V8;
+	else
+		dwc_priv->flags &= ~FLAG_IO_FIXED_1V8;
+
+	/*
+	 * start_signal_voltage_switch() will try 3.3V first
+	 * then 1.8V. Use SDHCI_SIGNALING_180 rather than
+	 * SDHCI_SIGNALING_330 to avoid setting voltage to 3.3V
+	 * in sdhci_start_signal_voltage_switch().
+	 */
+	if (dwc_priv->flags & FLAG_IO_FIXED_1V8) {
+		host->flags &= ~SDHCI_SIGNALING_330;
+		host->flags |=  SDHCI_SIGNALING_180;
+	}
+
+	sdhci_enable_v4_mode(host);
+
+	return 0;
+}
+
 static void cv18xx_sdhci_reset(struct sdhci_host *host, u8 mask)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -1231,27 +1260,7 @@  static int dwcmshc_probe(struct platform_device *pdev)
 	}
 
 	if (pltfm_data == &sdhci_dwcmshc_th1520_pdata) {
-		priv->delay_line = PHY_SDCLKDL_DC_DEFAULT;
-
-		if (device_property_read_bool(dev, "mmc-ddr-1_8v") ||
-		    device_property_read_bool(dev, "mmc-hs200-1_8v") ||
-		    device_property_read_bool(dev, "mmc-hs400-1_8v"))
-			priv->flags |= FLAG_IO_FIXED_1V8;
-		else
-			priv->flags &= ~FLAG_IO_FIXED_1V8;
-
-		/*
-		 * start_signal_voltage_switch() will try 3.3V first
-		 * then 1.8V. Use SDHCI_SIGNALING_180 rather than
-		 * SDHCI_SIGNALING_330 to avoid setting voltage to 3.3V
-		 * in sdhci_start_signal_voltage_switch().
-		 */
-		if (priv->flags & FLAG_IO_FIXED_1V8) {
-			host->flags &= ~SDHCI_SIGNALING_330;
-			host->flags |=  SDHCI_SIGNALING_180;
-		}
-
-		sdhci_enable_v4_mode(host);
+		th1520_init(dev, host, priv);
 	}
 
 #ifdef CONFIG_ACPI