On 5/08/24 12:17, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@xxxxxxxxxxx>
>
> 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@xxxxxxxxxxx>
> Reviewed-by: Drew Fustini <drew@xxxxxxxx>
> Tested-by: Drew Fustini <drew@xxxxxxxx> # TH1520
> Tested-by: Inochi Amaoto <inochiama@xxxxxxxxxxx> # Duo and Huashan Pi
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> ---
> 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 a002636d51fd..b272ec2ab232 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
