#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
struct clk *clk_sdio;
struct clk *clk_enable;
struct clk *clk_2x_enable;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *pins_uhs;
+ struct pinctrl_state *pins_default;
u32 base_rate;
int flags; /* backup of host attribute */
u32 phy_delay[MMC_TIMING_MMC_HS400 + 2];
static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)
{
+ struct sdhci_host *host = mmc_priv(mmc);
+ struct sdhci_sprd_host *sprd_host = TO_SPRD_HOST(host);
int ret;
if (!IS_ERR(mmc->supply.vqmmc)) {
}
}
+ if (IS_ERR(sprd_host->pinctrl))
+ return 0;
+
+ switch (ios->signal_voltage) {
+ case MMC_SIGNAL_VOLTAGE_180:
+ ret = pinctrl_select_state(sprd_host->pinctrl,
+ sprd_host->pins_uhs);
+ if (ret) {
+ pr_err("%s: failed to select uhs pin state\n",
+ mmc_hostname(mmc));
+ return ret;
+ }
+ break;
+
+ default:
+ /* fall-through */
+ case MMC_SIGNAL_VOLTAGE_330:
+ ret = pinctrl_select_state(sprd_host->pinctrl,
+ sprd_host->pins_default);
+ if (ret) {
+ pr_err("%s: failed to select default pin state\n",
+ mmc_hostname(mmc));
+ return ret;
+ }
+ break;
+ }
+
+ /* Wait for 300 ~ 500 us for pin state stable */
+ usleep_range(300, 500);
+ sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
+
return 0;
}
sprd_host = TO_SPRD_HOST(host);
sdhci_sprd_phy_param_parse(sprd_host, pdev->dev.of_node);
+ sprd_host->pinctrl = devm_pinctrl_get(&pdev->dev);
+ if (!IS_ERR(sprd_host->pinctrl)) {
+ sprd_host->pins_uhs =
+ pinctrl_lookup_state(sprd_host->pinctrl, "state_uhs");
+ if (IS_ERR(sprd_host->pins_uhs)) {
+ ret = PTR_ERR(sprd_host->pins_uhs);
+ goto pltfm_free;
+ }
+
+ sprd_host->pins_default =
+ pinctrl_lookup_state(sprd_host->pinctrl, "default");
+ if (IS_ERR(sprd_host->pins_default)) {
+ ret = PTR_ERR(sprd_host->pins_default);
+ goto pltfm_free;
+ }
+ }
+
clk = devm_clk_get(&pdev->dev, "sdio");
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);