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mmc: sdhci: Use mmc core regulator infrastucture
Switch the common SDHCI code over to use mmc_host's regulator pointers and remove the ones in the sdhci_host structure. Additionally, use the common mmc_regulator_get_supply function to get the regulators and set the ocr_avail mask. This change sets the ocr_avail directly based upon the voltage ranges supported which ensures ocr_avail is set correctly while allowing the use of regulators that can't provide exactly 1.8v, 3.0v, or 3.3v. Signed-off-by: Tim Kryger <tim.kryger@gmail.com> Signed-off-by: Markus Mayer <markus.mayer@linaro.org> Reviewed-by: Matt Porter <mporter@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Tim Kryger
Ulf Hansson
parent
2e42da5980
commit
3a48edc4bd
@ -1223,6 +1223,7 @@ EXPORT_SYMBOL_GPL(sdhci_set_clock);
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static void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
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unsigned short vdd)
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{
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struct mmc_host *mmc = host->mmc;
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u8 pwr = 0;
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if (mode != MMC_POWER_OFF) {
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@ -1284,9 +1285,9 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
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mdelay(10);
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}
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if (host->vmmc) {
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if (!IS_ERR(mmc->supply.vmmc)) {
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spin_unlock_irq(&host->lock);
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mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd);
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mmc_regulator_set_ocr(host->mmc, mmc->supply.vmmc, vdd);
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spin_lock_irq(&host->lock);
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}
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}
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@ -1440,13 +1441,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
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{
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unsigned long flags;
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u8 ctrl;
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struct mmc_host *mmc = host->mmc;
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spin_lock_irqsave(&host->lock, flags);
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if (host->flags & SDHCI_DEVICE_DEAD) {
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spin_unlock_irqrestore(&host->lock, flags);
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if (host->vmmc && ios->power_mode == MMC_POWER_OFF)
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mmc_regulator_set_ocr(host->mmc, host->vmmc, 0);
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if (!IS_ERR(mmc->supply.vmmc) &&
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ios->power_mode == MMC_POWER_OFF)
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mmc_regulator_set_ocr(host->mmc, mmc->supply.vmmc, 0);
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return;
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}
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@ -1707,6 +1710,7 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
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static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
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struct mmc_ios *ios)
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{
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struct mmc_host *mmc = host->mmc;
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u16 ctrl;
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int ret;
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@ -1725,8 +1729,9 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
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ctrl &= ~SDHCI_CTRL_VDD_180;
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sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
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if (host->vqmmc) {
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ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000);
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if (!IS_ERR(mmc->supply.vqmmc)) {
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ret = regulator_set_voltage(mmc->supply.vqmmc, 2700000,
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3600000);
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if (ret) {
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pr_warning("%s: Switching to 3.3V signalling voltage "
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" failed\n", mmc_hostname(host->mmc));
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@ -1746,8 +1751,8 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
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return -EAGAIN;
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case MMC_SIGNAL_VOLTAGE_180:
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if (host->vqmmc) {
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ret = regulator_set_voltage(host->vqmmc,
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if (!IS_ERR(mmc->supply.vqmmc)) {
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ret = regulator_set_voltage(mmc->supply.vqmmc,
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1700000, 1950000);
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if (ret) {
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pr_warning("%s: Switching to 1.8V signalling voltage "
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@ -1776,8 +1781,9 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
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return -EAGAIN;
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case MMC_SIGNAL_VOLTAGE_120:
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if (host->vqmmc) {
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ret = regulator_set_voltage(host->vqmmc, 1100000, 1300000);
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if (!IS_ERR(mmc->supply.vqmmc)) {
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ret = regulator_set_voltage(mmc->supply.vqmmc, 1100000,
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1300000);
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if (ret) {
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pr_warning("%s: Switching to 1.2V signalling voltage "
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" failed\n", mmc_hostname(host->mmc));
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@ -2962,25 +2968,22 @@ int sdhci_add_host(struct sdhci_host *host)
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!(host->mmc->caps & MMC_CAP_NONREMOVABLE))
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mmc->caps |= MMC_CAP_NEEDS_POLL;
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/* If there are external regulators, get them */
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if (mmc_regulator_get_supply(mmc) == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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/* If vqmmc regulator and no 1.8V signalling, then there's no UHS */
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host->vqmmc = regulator_get_optional(mmc_dev(mmc), "vqmmc");
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if (IS_ERR_OR_NULL(host->vqmmc)) {
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if (PTR_ERR(host->vqmmc) < 0) {
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pr_info("%s: no vqmmc regulator found\n",
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mmc_hostname(mmc));
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host->vqmmc = NULL;
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}
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} else {
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ret = regulator_enable(host->vqmmc);
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if (!regulator_is_supported_voltage(host->vqmmc, 1700000,
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1950000))
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if (!IS_ERR(mmc->supply.vqmmc)) {
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ret = regulator_enable(mmc->supply.vqmmc);
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if (!regulator_is_supported_voltage(mmc->supply.vqmmc, 1700000,
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1950000))
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caps[1] &= ~(SDHCI_SUPPORT_SDR104 |
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SDHCI_SUPPORT_SDR50 |
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SDHCI_SUPPORT_DDR50);
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if (ret) {
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pr_warn("%s: Failed to enable vqmmc regulator: %d\n",
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mmc_hostname(mmc), ret);
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host->vqmmc = NULL;
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mmc->supply.vqmmc = NULL;
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}
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}
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@ -3041,34 +3044,6 @@ int sdhci_add_host(struct sdhci_host *host)
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ocr_avail = 0;
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host->vmmc = regulator_get_optional(mmc_dev(mmc), "vmmc");
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if (IS_ERR_OR_NULL(host->vmmc)) {
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if (PTR_ERR(host->vmmc) < 0) {
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pr_info("%s: no vmmc regulator found\n",
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mmc_hostname(mmc));
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host->vmmc = NULL;
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}
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}
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#ifdef CONFIG_REGULATOR
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/*
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* Voltage range check makes sense only if regulator reports
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* any voltage value.
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*/
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if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) {
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ret = regulator_is_supported_voltage(host->vmmc, 2700000,
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3600000);
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if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
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caps[0] &= ~SDHCI_CAN_VDD_330;
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if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300)))
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caps[0] &= ~SDHCI_CAN_VDD_300;
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ret = regulator_is_supported_voltage(host->vmmc, 1700000,
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1950000);
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if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180)))
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caps[0] &= ~SDHCI_CAN_VDD_180;
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}
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#endif /* CONFIG_REGULATOR */
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/*
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* According to SD Host Controller spec v3.00, if the Host System
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* can afford more than 150mA, Host Driver should set XPC to 1. Also
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@ -3077,8 +3052,8 @@ int sdhci_add_host(struct sdhci_host *host)
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* value.
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*/
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max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);
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if (!max_current_caps && host->vmmc) {
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u32 curr = regulator_get_current_limit(host->vmmc);
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if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) {
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u32 curr = regulator_get_current_limit(mmc->supply.vmmc);
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if (curr > 0) {
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/* convert to SDHCI_MAX_CURRENT format */
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@ -3118,8 +3093,11 @@ int sdhci_add_host(struct sdhci_host *host)
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SDHCI_MAX_CURRENT_MULTIPLIER;
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}
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if (mmc->ocr_avail)
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ocr_avail &= mmc->ocr_avail;
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if (host->ocr_mask)
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ocr_avail = host->ocr_mask;
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ocr_avail &= host->ocr_mask;
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mmc->ocr_avail = ocr_avail;
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mmc->ocr_avail_sdio = ocr_avail;
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@ -3273,6 +3251,7 @@ EXPORT_SYMBOL_GPL(sdhci_add_host);
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void sdhci_remove_host(struct sdhci_host *host, int dead)
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{
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struct mmc_host *mmc = host->mmc;
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unsigned long flags;
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if (dead) {
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@ -3310,15 +3289,11 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
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tasklet_kill(&host->finish_tasklet);
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if (host->vmmc) {
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regulator_disable(host->vmmc);
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regulator_put(host->vmmc);
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}
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if (!IS_ERR(mmc->supply.vmmc))
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regulator_disable(mmc->supply.vmmc);
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if (host->vqmmc) {
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regulator_disable(host->vqmmc);
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regulator_put(host->vqmmc);
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}
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if (!IS_ERR(mmc->supply.vqmmc))
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regulator_disable(mmc->supply.vqmmc);
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if (host->adma_desc)
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dma_free_coherent(mmc_dev(host->mmc), ADMA_SIZE,
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@ -104,9 +104,6 @@ struct sdhci_host {
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const struct sdhci_ops *ops; /* Low level hw interface */
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struct regulator *vmmc; /* Power regulator (vmmc) */
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struct regulator *vqmmc; /* Signaling regulator (vccq) */
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/* Internal data */
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struct mmc_host *mmc; /* MMC structure */
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u64 dma_mask; /* custom DMA mask */
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