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mmc: sdhci-of-dwcmshc: factor out code for th1520_init()

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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>
Link: https://lore.kernel.org/r/23c6a81052a6dd3660d60348731229d60a209b32.1722847198.git.unicorn_wang@outlook.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chen Wang
2024-08-05 17:17:59 +08:00
committed by Ulf Hansson
parent 2b85774549
commit 76610189b2
1 changed files with 30 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/mmc/host/sdhci-of-dwcmshc.c
+30 -21
View File
@@ -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