| Message ID | 23c6a81052a6dd3660d60348731229d60a209b32.1722847198.git.unicorn_wang@outlook.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | mmc: sdhci-of-dwcmshc: Add Sophgo SG2042 support | expand |
On 5/08/24 12:17, 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> > Reviewed-by: Drew Fustini <drew@pdp7.com> > Tested-by: Drew Fustini <drew@pdp7.com> # TH1520 > Tested-by: Inochi Amaoto <inochiama@outlook.com> # Duo and Huashan Pi Acked-by: Adrian Hunter <adrian.hunter@intel.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 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
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