1 // SPDX-License-Identifier: GPL-2.0-only
17 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
20 #include <linux/hwmon-sysfs.h>
24 #define DRV_NAME "ahci-imx"
27 	/* Timer 1-ms Register */
104 	struct regmap *gpr;  member
113 MODULE_PARM_DESC(hotplug, "AHCI IMX hot-plug support (0=Don't support, 1=support)");
137 	} while (--timeout);  in imx_phy_crbit_assert()
139 	return timeout ? 0 : -ETIMEDOUT;  in imx_phy_crbit_assert()
227 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in imx_sata_phy_reset()
228 	void __iomem *mmio = hpriv->mmio;  in imx_sata_phy_reset()
233 	if (imxpriv->type == AHCI_IMX6QP) {  in imx_sata_phy_reset()
235 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR5,  in imx_sata_phy_reset()
238 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR5,  in imx_sata_phy_reset()
241 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR5,  in imx_sata_phy_reset()
266 	} while (--timeout);  in imx_sata_phy_reset()
268 	return timeout ? 0 : -ETIMEDOUT;  in imx_sata_phy_reset()
336 	void __iomem *mmio = hpriv->mmio;  in sata_ahci_read_temperature()
338 	/* check rd-wr to reg */  in sata_ahci_read_temperature()
413 	a = (m2 - m1) / (m2/1000);  in sata_ahci_read_temperature()
414 	*temp = ((-559) * a * a) / 1000 + (1379) * a + (-458000);  in sata_ahci_read_temperature()
449 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in imx8_sata_enable()
450 	struct device *dev = &imxpriv->ahci_pdev->dev;  in imx8_sata_enable()
453 	ret = clk_prepare_enable(imxpriv->phy_pclk0);  in imx8_sata_enable()
458 	ret = clk_prepare_enable(imxpriv->phy_pclk1);  in imx8_sata_enable()
463 	ret = clk_prepare_enable(imxpriv->epcs_tx_clk);  in imx8_sata_enable()
468 	ret = clk_prepare_enable(imxpriv->epcs_rx_clk);  in imx8_sata_enable()
473 	ret = clk_prepare_enable(imxpriv->phy_apbclk);  in imx8_sata_enable()
479 	regmap_read(imxpriv->gpr, IMX8QM_CSR_PCIEA_OFFSET +  in imx8_sata_enable()
483 		regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
490 	regmap_read(imxpriv->gpr, IMX8QM_CSR_PCIEB_OFFSET +  in imx8_sata_enable()
494 		regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
503 		regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
512 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
516 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
522 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
531 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
535 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
539 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
552 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
564 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
569 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
574 	/* CTRL RST: SET -> delay 1 us -> CLEAR -> SET */  in imx8_sata_enable()
575 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
580 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
584 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
590 	regmap_update_bits(imxpriv->gpr,  in imx8_sata_enable()
598 		regmap_read(imxpriv->gpr, reg, &val);  in imx8_sata_enable()
607 		ret = -ENODEV;  in imx8_sata_enable()
609 		writeb(imxpriv->imped_ratio, imxpriv->phy_base +  in imx8_sata_enable()
611 		writeb(imxpriv->imped_ratio, imxpriv->phy_base +  in imx8_sata_enable()
613 		reg = readb(imxpriv->phy_base +  in imx8_sata_enable()
615 		if (unlikely(reg != imxpriv->imped_ratio))  in imx8_sata_enable()
617 		reg = readb(imxpriv->phy_base +  in imx8_sata_enable()
619 		if (unlikely(reg != imxpriv->imped_ratio))  in imx8_sata_enable()
627 		clk_disable_unprepare(imxpriv->phy_apbclk);  in imx8_sata_enable()
628 		clk_disable_unprepare(imxpriv->phy_pclk1);  in imx8_sata_enable()
629 		clk_disable_unprepare(imxpriv->phy_pclk0);  in imx8_sata_enable()
633 	clk_disable_unprepare(imxpriv->phy_apbclk);  in imx8_sata_enable()
635 	clk_disable_unprepare(imxpriv->epcs_rx_clk);  in imx8_sata_enable()
637 	clk_disable_unprepare(imxpriv->epcs_tx_clk);  in imx8_sata_enable()
639 	clk_disable_unprepare(imxpriv->phy_pclk1);  in imx8_sata_enable()
641 	clk_disable_unprepare(imxpriv->phy_pclk0);  in imx8_sata_enable()
648 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in imx_sata_enable()
649 	struct device *dev = &imxpriv->ahci_pdev->dev;  in imx_sata_enable()
652 	if (imxpriv->no_device)  in imx_sata_enable()
659 	ret = clk_prepare_enable(imxpriv->sata_ref_clk);  in imx_sata_enable()
663 	if (imxpriv->type == AHCI_IMX6Q || imxpriv->type == AHCI_IMX6QP) {  in imx_sata_enable()
670 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,  in imx_sata_enable()
681 				   imxpriv->phy_params);  in imx_sata_enable()
682 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,  in imx_sata_enable()
693 	} else if (imxpriv->type == AHCI_IMX8QM) {  in imx_sata_enable()
702 	clk_disable_unprepare(imxpriv->sata_ref_clk);  in imx_sata_enable()
711 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in imx_sata_disable()
713 	if (imxpriv->no_device)  in imx_sata_disable()
716 	switch (imxpriv->type) {  in imx_sata_disable()
718 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR5,  in imx_sata_disable()
721 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,  in imx_sata_disable()
727 		regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,  in imx_sata_disable()
733 		clk_disable_unprepare(imxpriv->epcs_rx_clk);  in imx_sata_disable()
734 		clk_disable_unprepare(imxpriv->epcs_tx_clk);  in imx_sata_disable()
741 	clk_disable_unprepare(imxpriv->sata_ref_clk);  in imx_sata_disable()
750 	struct ata_host *host = dev_get_drvdata(ap->dev);  in ahci_imx_error_handler()
751 	struct ahci_host_priv *hpriv = host->private_data;  in ahci_imx_error_handler()
752 	void __iomem *mmio = hpriv->mmio;  in ahci_imx_error_handler()
753 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in ahci_imx_error_handler()
757 	if (!(imxpriv->first_time) || ahci_imx_hotplug)  in ahci_imx_error_handler()
760 	imxpriv->first_time = false;  in ahci_imx_error_handler()
762 	ata_for_each_dev(dev, &ap->link, ENABLED)  in ahci_imx_error_handler()
772 	imxpriv->no_device = true;  in ahci_imx_error_handler()
774 	dev_info(ap->dev, "no device found, disabling link.\n");  in ahci_imx_error_handler()
775 	dev_info(ap->dev, "pass " MODULE_PARAM_PREFIX ".hotplug=1 to enable hotplug\n");  in ahci_imx_error_handler()
781 	struct ata_port *ap = link->ap;  in ahci_imx_softreset()
782 	struct ata_host *host = dev_get_drvdata(ap->dev);  in ahci_imx_softreset()
783 	struct ahci_host_priv *hpriv = host->private_data;  in ahci_imx_softreset()
784 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in ahci_imx_softreset()
787 	if (imxpriv->type == AHCI_IMX53)  in ahci_imx_softreset()
810 	{ .compatible = "fsl,imx53-ahci", .data = (void *)AHCI_IMX53 },
811 	{ .compatible = "fsl,imx6q-ahci", .data = (void *)AHCI_IMX6Q },
812 	{ .compatible = "fsl,imx6qp-ahci", .data = (void *)AHCI_IMX6QP },
813 	{ .compatible = "fsl,imx8qm-ahci", .data = (void *)AHCI_IMX8QM },
907 		.name = "fsl,transmit-level-mV",
912 		.name = "fsl,transmit-boost-mdB",
917 		.name = "fsl,transmit-atten-16ths",
922 		.name = "fsl,receive-eq-mdB",
927 		.name = "fsl,no-spread-spectrum",
936 	struct device_node *np = dev->of_node;  in imx_ahci_parse_props()
943 		if (prop->num_values == 0) {  in imx_ahci_parse_props()
944 			if (of_property_read_bool(np, prop->name))  in imx_ahci_parse_props()
945 				reg_value |= prop->set_value;  in imx_ahci_parse_props()
947 				reg_value |= prop->def_value;  in imx_ahci_parse_props()
951 		if (of_property_read_u32(np, prop->name, &of_val)) {  in imx_ahci_parse_props()
953 				prop->name, prop->def_value);  in imx_ahci_parse_props()
954 			reg_value |= prop->def_value;  in imx_ahci_parse_props()
958 		for (j = 0; j < prop->num_values; j++) {  in imx_ahci_parse_props()
959 			if (prop->values[j].of_value == of_val) {  in imx_ahci_parse_props()
961 					prop->name, of_val, prop->values[j].reg_value);  in imx_ahci_parse_props()
962 				reg_value |= prop->values[j].reg_value;  in imx_ahci_parse_props()
967 		if (j == prop->num_values) {  in imx_ahci_parse_props()
969 				prop->name);  in imx_ahci_parse_props()
970 			reg_value |= prop->def_value;  in imx_ahci_parse_props()
984 	struct platform_device *pdev = imxpriv->ahci_pdev;  in imx8_sata_probe()
985 	struct device_node *np = dev->of_node;  in imx8_sata_probe()
987 	if (of_property_read_u32(np, "fsl,phy-imp", &imxpriv->imped_ratio))  in imx8_sata_probe()
988 		imxpriv->imped_ratio = IMX8QM_SATA_PHY_IMPED_RATIO_85OHM;  in imx8_sata_probe()
991 		imxpriv->phy_base = devm_ioremap(dev, phy_res->start,  in imx8_sata_probe()
993 		if (!imxpriv->phy_base) {  in imx8_sata_probe()
995 			return -ENOMEM;  in imx8_sata_probe()
999 		return -ENOMEM;  in imx8_sata_probe()
1001 	imxpriv->gpr =  in imx8_sata_probe()
1003 	if (IS_ERR(imxpriv->gpr)) {  in imx8_sata_probe()
1004 		dev_err(dev, "unable to find gpr registers\n");  in imx8_sata_probe()
1005 		return PTR_ERR(imxpriv->gpr);  in imx8_sata_probe()
1008 	imxpriv->epcs_tx_clk = devm_clk_get(dev, "epcs_tx");  in imx8_sata_probe()
1009 	if (IS_ERR(imxpriv->epcs_tx_clk)) {  in imx8_sata_probe()
1011 		return PTR_ERR(imxpriv->epcs_tx_clk);  in imx8_sata_probe()
1013 	imxpriv->epcs_rx_clk = devm_clk_get(dev, "epcs_rx");  in imx8_sata_probe()
1014 	if (IS_ERR(imxpriv->epcs_rx_clk)) {  in imx8_sata_probe()
1016 		return PTR_ERR(imxpriv->epcs_rx_clk);  in imx8_sata_probe()
1018 	imxpriv->phy_pclk0 = devm_clk_get(dev, "phy_pclk0");  in imx8_sata_probe()
1019 	if (IS_ERR(imxpriv->phy_pclk0)) {  in imx8_sata_probe()
1021 		return PTR_ERR(imxpriv->phy_pclk0);  in imx8_sata_probe()
1023 	imxpriv->phy_pclk1 = devm_clk_get(dev, "phy_pclk1");  in imx8_sata_probe()
1024 	if (IS_ERR(imxpriv->phy_pclk1)) {  in imx8_sata_probe()
1026 		return PTR_ERR(imxpriv->phy_pclk1);  in imx8_sata_probe()
1028 	imxpriv->phy_apbclk = devm_clk_get(dev, "phy_apbclk");  in imx8_sata_probe()
1029 	if (IS_ERR(imxpriv->phy_apbclk)) {  in imx8_sata_probe()
1031 		return PTR_ERR(imxpriv->phy_apbclk);  in imx8_sata_probe()
1035 	imxpriv->clkreq_gpiod = devm_gpiod_get_optional(dev, "clkreq",  in imx8_sata_probe()
1037 	if (IS_ERR(imxpriv->clkreq_gpiod))  in imx8_sata_probe()
1038 		return PTR_ERR(imxpriv->clkreq_gpiod);  in imx8_sata_probe()
1039 	if (imxpriv->clkreq_gpiod)  in imx8_sata_probe()
1040 		gpiod_set_consumer_name(imxpriv->clkreq_gpiod, "SATA CLKREQ");  in imx8_sata_probe()
1047 	struct device *dev = &pdev->dev;  in imx_ahci_probe()
1056 		return -EINVAL;  in imx_ahci_probe()
1060 		return -ENOMEM;  in imx_ahci_probe()
1062 	imxpriv->ahci_pdev = pdev;  in imx_ahci_probe()
1063 	imxpriv->no_device = false;  in imx_ahci_probe()
1064 	imxpriv->first_time = true;  in imx_ahci_probe()
1065 	imxpriv->type = (enum ahci_imx_type)of_id->data;  in imx_ahci_probe()
1067 	imxpriv->sata_clk = devm_clk_get(dev, "sata");  in imx_ahci_probe()
1068 	if (IS_ERR(imxpriv->sata_clk)) {  in imx_ahci_probe()
1070 		return PTR_ERR(imxpriv->sata_clk);  in imx_ahci_probe()
1073 	imxpriv->sata_ref_clk = devm_clk_get(dev, "sata_ref");  in imx_ahci_probe()
1074 	if (IS_ERR(imxpriv->sata_ref_clk)) {  in imx_ahci_probe()
1076 		return PTR_ERR(imxpriv->sata_ref_clk);  in imx_ahci_probe()
1079 	imxpriv->ahb_clk = devm_clk_get(dev, "ahb");  in imx_ahci_probe()
1080 	if (IS_ERR(imxpriv->ahb_clk)) {  in imx_ahci_probe()
1082 		return PTR_ERR(imxpriv->ahb_clk);  in imx_ahci_probe()
1085 	if (imxpriv->type == AHCI_IMX6Q || imxpriv->type == AHCI_IMX6QP) {  in imx_ahci_probe()
1088 		imxpriv->gpr = syscon_regmap_lookup_by_compatible(  in imx_ahci_probe()
1089 							"fsl,imx6q-iomuxc-gpr");  in imx_ahci_probe()
1090 		if (IS_ERR(imxpriv->gpr)) {  in imx_ahci_probe()
1092 				"failed to find fsl,imx6q-iomux-gpr regmap\n");  in imx_ahci_probe()
1093 			return PTR_ERR(imxpriv->gpr);  in imx_ahci_probe()
1099 		imxpriv->phy_params =  in imx_ahci_probe()
1104 	} else if (imxpriv->type == AHCI_IMX8QM) {  in imx_ahci_probe()
1114 	hpriv->plat_data = imxpriv;  in imx_ahci_probe()
1116 	ret = clk_prepare_enable(imxpriv->sata_clk);  in imx_ahci_probe()
1120 	if (imxpriv->type == AHCI_IMX53 &&  in imx_ahci_probe()
1150 	reg_val = readl(hpriv->mmio + HOST_CAP);  in imx_ahci_probe()
1153 		writel(reg_val, hpriv->mmio + HOST_CAP);  in imx_ahci_probe()
1155 	reg_val = readl(hpriv->mmio + HOST_PORTS_IMPL);  in imx_ahci_probe()
1158 		writel(reg_val, hpriv->mmio + HOST_PORTS_IMPL);  in imx_ahci_probe()
1161 	reg_val = clk_get_rate(imxpriv->ahb_clk) / 1000;  in imx_ahci_probe()
1162 	writel(reg_val, hpriv->mmio + IMX_TIMER1MS);  in imx_ahci_probe()
1174 	clk_disable_unprepare(imxpriv->sata_clk);  in imx_ahci_probe()
1180 	struct ahci_host_priv *hpriv = host->private_data;  in ahci_imx_host_stop()
1181 	struct imx_ahci_priv *imxpriv = hpriv->plat_data;  in ahci_imx_host_stop()
1184 	clk_disable_unprepare(imxpriv->sata_clk);  in ahci_imx_host_stop()
1191 	struct ahci_host_priv *hpriv = host->private_data;  in imx_ahci_suspend()
1206 	struct ahci_host_priv *hpriv = host->private_data;  in imx_ahci_resume()
1231 MODULE_AUTHOR("Richard Zhu <Hong-Xing.Zhu@freescale.com>");