1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/mmc/slot-gpio.h>
24 #include "sdhci-pltfm.h"
98 /* sdhci-omap controller flags */
143 	return readl(host->base + host->omap_offset + offset);  in sdhci_omap_readl()
149 	writel(data, host->base + host->omap_offset + offset);  in sdhci_omap_writel()
156 	struct device *dev = omap_host->dev;  in sdhci_omap_set_pbias()
158 	if (IS_ERR(omap_host->pbias))  in sdhci_omap_set_pbias()
162 		ret = regulator_set_voltage(omap_host->pbias, iov, iov);  in sdhci_omap_set_pbias()
168 		if (omap_host->pbias_enabled)  in sdhci_omap_set_pbias()
171 		ret = regulator_enable(omap_host->pbias);  in sdhci_omap_set_pbias()
177 		omap_host->pbias_enabled = true;  in sdhci_omap_set_pbias()
179 		if (!omap_host->pbias_enabled)  in sdhci_omap_set_pbias()
182 		ret = regulator_disable(omap_host->pbias);  in sdhci_omap_set_pbias()
187 		omap_host->pbias_enabled = false;  in sdhci_omap_set_pbias()
197 	struct sdhci_host *host = omap_host->host;  in sdhci_omap_enable_iov()
198 	struct mmc_host *mmc = host->mmc;  in sdhci_omap_enable_iov()
204 	if (!IS_ERR(mmc->supply.vqmmc)) {  in sdhci_omap_enable_iov()
206 		ret = mmc_regulator_set_vqmmc(mmc, &mmc->ios);  in sdhci_omap_enable_iov()
237 			dev_warn(omap_host->dev, "misconfigured CAPA: %08x\n",  in sdhci_omap_conf_bus_power()
323 	struct device *dev = omap_host->dev;  in sdhci_omap_execute_tuning()
324 	struct mmc_ios *ios = &mmc->ios;  in sdhci_omap_execute_tuning()
337 	if (ios->clock <= 52000000)  in sdhci_omap_execute_tuning()
341 	if (ios->timing == MMC_TIMING_UHS_SDR50 && !(reg & CAPA2_TSDR50))  in sdhci_omap_execute_tuning()
364 	if (host->ier & SDHCI_INT_DATA_CRC) {  in sdhci_omap_execute_tuning()
365 		host->ier &= ~SDHCI_INT_DATA_CRC;  in sdhci_omap_execute_tuning()
369 	omap_host->is_tuning = true;  in sdhci_omap_execute_tuning()
405 		ret = -EIO;  in sdhci_omap_execute_tuning()
413 	if (temperature < -20000)  in sdhci_omap_execute_tuning()
414 		phase_delay = min(max_window + 4 * (max_len - 1) - 24,  in sdhci_omap_execute_tuning()
433 	 * +2 to -10 range. If found, move away from it in the appropriate  in sdhci_omap_execute_tuning()
443 				phase_delay += i - 12;  in sdhci_omap_execute_tuning()
445 				phase_delay += i - 8;  in sdhci_omap_execute_tuning()
447 				phase_delay += i - 6;  in sdhci_omap_execute_tuning()
453 	for (i = 2; i >= -10; i--) {  in sdhci_omap_execute_tuning()
475 		ret = -EIO;  in sdhci_omap_execute_tuning()
481 	omap_host->is_tuning = false;  in sdhci_omap_execute_tuning()
486 	omap_host->is_tuning = false;  in sdhci_omap_execute_tuning()
494 		host->ier |= SDHCI_INT_DATA_CRC;  in sdhci_omap_execute_tuning()
495 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_omap_execute_tuning()
496 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_omap_execute_tuning()
507 	u32 ier = host->ier;  in sdhci_omap_card_busy()
520 	disable_irq(host->irq);  in sdhci_omap_card_busy()
538 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_omap_card_busy()
539 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_omap_card_busy()
540 	enable_irq(host->irq);  in sdhci_omap_card_busy()
558 	dev = omap_host->dev;  in sdhci_omap_start_signal_voltage_switch()
560 	if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {  in sdhci_omap_start_signal_voltage_switch()
563 			return -EOPNOTSUPP;  in sdhci_omap_start_signal_voltage_switch()
570 		sdhci_omap_conf_bus_power(omap_host, ios->signal_voltage);  in sdhci_omap_start_signal_voltage_switch()
576 	} else if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180) {  in sdhci_omap_start_signal_voltage_switch()
579 			return -EOPNOTSUPP;  in sdhci_omap_start_signal_voltage_switch()
583 		sdhci_omap_conf_bus_power(omap_host, ios->signal_voltage);  in sdhci_omap_start_signal_voltage_switch()
589 		return -EOPNOTSUPP;  in sdhci_omap_start_signal_voltage_switch()
606 	struct device *dev = omap_host->dev;  in sdhci_omap_set_timing()
608 	if (!(omap_host->flags & SDHCI_OMAP_REQUIRE_IODELAY))  in sdhci_omap_set_timing()
611 	if (omap_host->timing == timing)  in sdhci_omap_set_timing()
616 	pinctrl_state = omap_host->pinctrl_state[timing];  in sdhci_omap_set_timing()
617 	ret = pinctrl_select_state(omap_host->pinctrl, pinctrl_state);  in sdhci_omap_set_timing()
624 	omap_host->timing = timing;  in sdhci_omap_set_timing()
630 	if (omap_host->bus_mode == MMC_POWER_OFF)  in sdhci_omap_set_power_mode()
632 	omap_host->power_mode = power_mode;  in sdhci_omap_set_power_mode()
640 	if (omap_host->bus_mode == mode)  in sdhci_omap_set_bus_mode()
650 	omap_host->bus_mode = mode;  in sdhci_omap_set_bus_mode()
662 	sdhci_omap_set_bus_mode(omap_host, ios->bus_mode);  in sdhci_omap_set_ios()
663 	sdhci_omap_set_timing(omap_host, ios->timing);  in sdhci_omap_set_ios()
665 	sdhci_omap_set_power_mode(omap_host, ios->power_mode);  in sdhci_omap_set_ios()
673 	dsor = DIV_ROUND_UP(clk_get_rate(host->clk), clock);  in sdhci_omap_calc_divisor()
719 	struct mmc_host *mmc = host->mmc;  in sdhci_omap_set_power()
721 	if (!IS_ERR(mmc->supply.vmmc))  in sdhci_omap_set_power()
722 		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);  in sdhci_omap_set_power()
738 	return readl(omap_host->base + 4) & 1;  in sdhci_omap_has_adma()
750 	if (!host->use_external_dma)  in sdhci_omap_enable_dma()
762 	return clk_get_rate(pltfm_host->clk) / SYSCTL_CLKD_MAX;  in sdhci_omap_get_min_clock()
788 	if (omap_host->power_mode == power_mode)  in sdhci_omap_init_74_clocks()
794 	disable_irq(host->irq);  in sdhci_omap_init_74_clocks()
818 	enable_irq(host->irq);  in sdhci_omap_init_74_clocks()
855 	if (omap_host->is_tuning)  in sdhci_omap_reset()
858 	if (omap_host->flags & SDHCI_OMAP_SPECIAL_RESET) {  in sdhci_omap_reset()
869 			dev_err(mmc_dev(host->mmc),  in sdhci_omap_reset()
892 	if (omap_host->is_tuning && host->cmd && !host->data_early &&  in sdhci_omap_irq()
902 			host->cmd->error = -ETIMEDOUT;  in sdhci_omap_irq()
904 			host->cmd->error = -EILSEQ;  in sdhci_omap_irq()
906 		host->cmd = NULL;  in sdhci_omap_irq()
923 	if (cmd->opcode == MMC_ERASE)  in sdhci_omap_set_timeout()
969 	struct device *dev = omap_host->dev;  in sdhci_omap_set_capabilities()
1006 	host->caps &= ~mask;  in sdhci_omap_set_capabilities()
1007 	host->caps |= caps;  in sdhci_omap_set_capabilities()
1071 	{ .compatible = "ti,omap2430-sdhci", .data = &omap2430_data },
1072 	{ .compatible = "ti,omap3-sdhci", .data = &omap3_data },
1073 	{ .compatible = "ti,omap4-sdhci", .data = &omap4_data },
1074 	{ .compatible = "ti,omap5-sdhci", .data = &omap5_data },
1075 	{ .compatible = "ti,dra7-sdhci", .data = &dra7_data },
1076 	{ .compatible = "ti,k2g-sdhci", .data = &k2g_data },
1077 	{ .compatible = "ti,am335-sdhci", .data = &am335_data },
1078 	{ .compatible = "ti,am437-sdhci", .data = &am437_data },
1087 	struct device *dev = omap_host->dev;  in sdhci_omap_iodelay_pinctrl_state()
1088 	char *version = omap_host->version;  in sdhci_omap_iodelay_pinctrl_state()
1089 	struct pinctrl_state *pinctrl_state = ERR_PTR(-ENODEV);  in sdhci_omap_iodelay_pinctrl_state()
1096 		snprintf(str, 20, "%s-%s", mode, version);  in sdhci_omap_iodelay_pinctrl_state()
1097 		pinctrl_state = pinctrl_lookup_state(omap_host->pinctrl, str);  in sdhci_omap_iodelay_pinctrl_state()
1101 		pinctrl_state = pinctrl_lookup_state(omap_host->pinctrl, mode);  in sdhci_omap_iodelay_pinctrl_state()
1115 	struct device *dev = omap_host->dev;  in sdhci_omap_config_iodelay_pinctrl_state()
1116 	struct sdhci_host *host = omap_host->host;  in sdhci_omap_config_iodelay_pinctrl_state()
1117 	struct mmc_host *mmc = host->mmc;  in sdhci_omap_config_iodelay_pinctrl_state()
1118 	u32 *caps = &mmc->caps;  in sdhci_omap_config_iodelay_pinctrl_state()
1119 	u32 *caps2 = &mmc->caps2;  in sdhci_omap_config_iodelay_pinctrl_state()
1123 	if (!(omap_host->flags & SDHCI_OMAP_REQUIRE_IODELAY))  in sdhci_omap_config_iodelay_pinctrl_state()
1131 		return -ENOMEM;  in sdhci_omap_config_iodelay_pinctrl_state()
1133 	omap_host->pinctrl = devm_pinctrl_get(omap_host->dev);  in sdhci_omap_config_iodelay_pinctrl_state()
1134 	if (IS_ERR(omap_host->pinctrl)) {  in sdhci_omap_config_iodelay_pinctrl_state()
1136 		return PTR_ERR(omap_host->pinctrl);  in sdhci_omap_config_iodelay_pinctrl_state()
1139 	state = pinctrl_lookup_state(omap_host->pinctrl, "default");  in sdhci_omap_config_iodelay_pinctrl_state()
1198 	omap_host->pinctrl_state = pinctrl_state;  in sdhci_omap_config_iodelay_pinctrl_state()
1217 	struct device *dev = &pdev->dev;  in sdhci_omap_probe()
1226 	data = of_device_get_match_data(&pdev->dev);  in sdhci_omap_probe()
1229 		return -EINVAL;  in sdhci_omap_probe()
1231 	offset = data->offset;  in sdhci_omap_probe()
1235 		return -ENXIO;  in sdhci_omap_probe()
1246 	omap_host->host = host;  in sdhci_omap_probe()
1247 	omap_host->base = host->ioaddr;  in sdhci_omap_probe()
1248 	omap_host->dev = dev;  in sdhci_omap_probe()
1249 	omap_host->power_mode = MMC_POWER_UNDEFINED;  in sdhci_omap_probe()
1250 	omap_host->timing = MMC_TIMING_LEGACY;  in sdhci_omap_probe()
1251 	omap_host->flags = data->flags;  in sdhci_omap_probe()
1252 	omap_host->omap_offset = data->omap_offset;  in sdhci_omap_probe()
1253 	omap_host->con = -EINVAL; /* Prevent invalid restore on first resume */  in sdhci_omap_probe()
1254 	host->ioaddr += offset;  in sdhci_omap_probe()
1255 	host->mapbase = regs->start + offset;  in sdhci_omap_probe()
1257 	mmc = host->mmc;  in sdhci_omap_probe()
1265 		omap_host->version = "rev11";  in sdhci_omap_probe()
1267 			mmc->f_max = 96000000;  in sdhci_omap_probe()
1269 			mmc->f_max = 48000000;  in sdhci_omap_probe()
1271 			mmc->f_max = 48000000;  in sdhci_omap_probe()
1275 		mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;  in sdhci_omap_probe()
1277 	pltfm_host->clk = devm_clk_get(dev, "fck");  in sdhci_omap_probe()
1278 	if (IS_ERR(pltfm_host->clk)) {  in sdhci_omap_probe()
1279 		ret = PTR_ERR(pltfm_host->clk);  in sdhci_omap_probe()
1283 	ret = clk_set_rate(pltfm_host->clk, mmc->f_max);  in sdhci_omap_probe()
1285 		dev_err(dev, "failed to set clock to %d\n", mmc->f_max);  in sdhci_omap_probe()
1289 	omap_host->pbias = devm_regulator_get_optional(dev, "pbias");  in sdhci_omap_probe()
1290 	if (IS_ERR(omap_host->pbias)) {  in sdhci_omap_probe()
1291 		ret = PTR_ERR(omap_host->pbias);  in sdhci_omap_probe()
1292 		if (ret != -ENODEV)  in sdhci_omap_probe()
1296 	omap_host->pbias_enabled = false;  in sdhci_omap_probe()
1320 	host->mmc_host_ops.start_signal_voltage_switch =  in sdhci_omap_probe()
1322 	host->mmc_host_ops.set_ios = sdhci_omap_set_ios;  in sdhci_omap_probe()
1323 	host->mmc_host_ops.card_busy = sdhci_omap_card_busy;  in sdhci_omap_probe()
1324 	host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning;  in sdhci_omap_probe()
1325 	host->mmc_host_ops.enable_sdio_irq = sdhci_omap_enable_sdio_irq;  in sdhci_omap_probe()
1335 	if (device_property_read_bool(dev, "ti,non-removable")) {  in sdhci_omap_probe()
1336 		dev_warn_once(dev, "using old ti,non-removable property\n");  in sdhci_omap_probe()
1337 		mmc->caps |= MMC_CAP_NONREMOVABLE;  in sdhci_omap_probe()
1341 	mmc->caps |= MMC_CAP_NEED_RSP_BUSY;  in sdhci_omap_probe()
1344 	mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_AGGRESSIVE_PM;  in sdhci_omap_probe()
1359 	 * SDIO devices can use the dat1 pin as a wake-up interrupt. Some  in sdhci_omap_probe()
1360 	 * devices like wl1xxx, use an out-of-band GPIO interrupt instead.  in sdhci_omap_probe()
1362 	omap_host->wakeirq = of_irq_get_byname(dev->of_node, "wakeup");  in sdhci_omap_probe()
1363 	if (omap_host->wakeirq == -EPROBE_DEFER) {  in sdhci_omap_probe()
1364 		ret = -EPROBE_DEFER;  in sdhci_omap_probe()
1367 	if (omap_host->wakeirq > 0) {  in sdhci_omap_probe()
1369 		ret = dev_pm_set_dedicated_wake_irq(dev, omap_host->wakeirq);  in sdhci_omap_probe()
1374 		host->mmc->pm_caps |= MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;  in sdhci_omap_probe()
1399 	struct device *dev = &pdev->dev;  in sdhci_omap_remove()
1418 	omap_host->con = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON);  in sdhci_omap_context_save()
1419 	omap_host->hctl = sdhci_omap_readl(omap_host, SDHCI_OMAP_HCTL);  in sdhci_omap_context_save()
1420 	omap_host->sysctl = sdhci_omap_readl(omap_host, SDHCI_OMAP_SYSCTL);  in sdhci_omap_context_save()
1421 	omap_host->capa = sdhci_omap_readl(omap_host, SDHCI_OMAP_CAPA);  in sdhci_omap_context_save()
1422 	omap_host->ie = sdhci_omap_readl(omap_host, SDHCI_OMAP_IE);  in sdhci_omap_context_save()
1423 	omap_host->ise = sdhci_omap_readl(omap_host, SDHCI_OMAP_ISE);  in sdhci_omap_context_save()
1429 	sdhci_omap_writel(omap_host, SDHCI_OMAP_HCTL, omap_host->hctl);  in sdhci_omap_context_restore()
1430 	sdhci_omap_writel(omap_host, SDHCI_OMAP_CAPA, omap_host->capa);  in sdhci_omap_context_restore()
1431 	sdhci_omap_writel(omap_host, SDHCI_OMAP_HCTL, omap_host->hctl);  in sdhci_omap_context_restore()
1433 	sdhci_omap_writel(omap_host, SDHCI_OMAP_SYSCTL, omap_host->sysctl);  in sdhci_omap_context_restore()
1434 	sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, omap_host->con);  in sdhci_omap_context_restore()
1435 	sdhci_omap_writel(omap_host, SDHCI_OMAP_IE, omap_host->ie);  in sdhci_omap_context_restore()
1436 	sdhci_omap_writel(omap_host, SDHCI_OMAP_ISE, omap_host->ise);  in sdhci_omap_context_restore()
1445 	if (omap_host->con != -EINVAL)  in sdhci_omap_runtime_suspend()
1463 	if (omap_host->con != -EINVAL) {  in sdhci_omap_runtime_resume()
1483 		   .name = "sdhci-omap",