3  * Helper functions for MMC regulators.
11 #include <linux/mmc/host.h>
57  * can be provided to MMC/SD/SDIO devices using the specified voltage
59  * MMC host adapter.
96  * @mmc: the host to regulate
102  * MMC host drivers may use this to enable or disable a regulator using
106 int mmc_regulator_set_ocr(struct mmc_host *mmc,  in mmc_regulator_set_ocr()  argument
120 		if (result == 0 && !mmc->regulator_enabled) {  in mmc_regulator_set_ocr()
123 				mmc->regulator_enabled = true;  in mmc_regulator_set_ocr()
125 	} else if (mmc->regulator_enabled) {  in mmc_regulator_set_ocr()
128 			mmc->regulator_enabled = false;  in mmc_regulator_set_ocr()
132 		dev_err(mmc_dev(mmc),  in mmc_regulator_set_ocr()
165  * @mmc: the host to regulate
182 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios)  in mmc_regulator_set_vqmmc()  argument
184 	struct device *dev = mmc_dev(mmc);  in mmc_regulator_set_vqmmc()
188 	if (IS_ERR(mmc->supply.vqmmc))  in mmc_regulator_set_vqmmc()
193 		return mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,  in mmc_regulator_set_vqmmc()
196 		return mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,  in mmc_regulator_set_vqmmc()
199 		ret = mmc_ocrbitnum_to_vdd(mmc->ios.vdd, &volt, &max_uV);  in mmc_regulator_set_vqmmc()
216 		ret = mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,  in mmc_regulator_set_vqmmc()
221 		return mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,  in mmc_regulator_set_vqmmc()
231  * @mmc: The mmc host to regulate
236  * be called by mmc host drivers.
241 int mmc_regulator_set_vqmmc2(struct mmc_host *mmc, struct mmc_ios *ios)  in mmc_regulator_set_vqmmc2()  argument
243 	if (IS_ERR(mmc->supply.vqmmc2))  in mmc_regulator_set_vqmmc2()
249 			mmc->supply.vqmmc2, 1700000, 1800000, 1950000);  in mmc_regulator_set_vqmmc2()
267  * @mmc: the host to regulate
275 int mmc_regulator_get_supply(struct mmc_host *mmc)  in mmc_regulator_get_supply()  argument
277 	struct device *dev = mmc_dev(mmc);  in mmc_regulator_get_supply()
280 	mmc->supply.vmmc = devm_regulator_get_optional(dev, "vmmc");  in mmc_regulator_get_supply()
281 	mmc->supply.vqmmc = devm_regulator_get_optional(dev, "vqmmc");  in mmc_regulator_get_supply()
282 	mmc->supply.vqmmc2 = devm_regulator_get_optional(dev, "vqmmc2");  in mmc_regulator_get_supply()
284 	if (IS_ERR(mmc->supply.vmmc)) {  in mmc_regulator_get_supply()
285 		if (PTR_ERR(mmc->supply.vmmc) == -EPROBE_DEFER)  in mmc_regulator_get_supply()
291 		ret = mmc_regulator_get_ocrmask(mmc->supply.vmmc);  in mmc_regulator_get_supply()
293 			mmc->ocr_avail = ret;  in mmc_regulator_get_supply()
298 	if (IS_ERR(mmc->supply.vqmmc)) {  in mmc_regulator_get_supply()
299 		if (PTR_ERR(mmc->supply.vqmmc) == -EPROBE_DEFER)  in mmc_regulator_get_supply()
306 	if (IS_ERR(mmc->supply.vqmmc2)) {  in mmc_regulator_get_supply()
307 		if (PTR_ERR(mmc->supply.vqmmc2) == -EPROBE_DEFER)  in mmc_regulator_get_supply()
318  * @mmc: the host to regulate
324 int mmc_regulator_enable_vqmmc(struct mmc_host *mmc)  in mmc_regulator_enable_vqmmc()  argument
328 	if (!IS_ERR(mmc->supply.vqmmc) && !mmc->vqmmc_enabled) {  in mmc_regulator_enable_vqmmc()
329 		ret = regulator_enable(mmc->supply.vqmmc);  in mmc_regulator_enable_vqmmc()
331 			dev_err(mmc_dev(mmc), "enabling vqmmc regulator failed\n");  in mmc_regulator_enable_vqmmc()
333 			mmc->vqmmc_enabled = true;  in mmc_regulator_enable_vqmmc()
342  * @mmc: the host to regulate
348 void mmc_regulator_disable_vqmmc(struct mmc_host *mmc)  in mmc_regulator_disable_vqmmc()  argument
350 	if (!IS_ERR(mmc->supply.vqmmc) && mmc->vqmmc_enabled) {  in mmc_regulator_disable_vqmmc()
351 		regulator_disable(mmc->supply.vqmmc);  in mmc_regulator_disable_vqmmc()
352 		mmc->vqmmc_enabled = false;  in mmc_regulator_disable_vqmmc()