diff options
Diffstat (limited to 'drivers/phy')
35 files changed, 713 insertions, 217 deletions
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index c0e6ede3e27d..47da573d0bab 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -54,8 +54,20 @@ config PHY_EXYNOS_MIPI_VIDEO Support for MIPI CSI-2 and MIPI DSI DPHY found on Samsung S5P and EXYNOS SoCs. +config PHY_LPC18XX_USB_OTG + tristate "NXP LPC18xx/43xx SoC USB OTG PHY driver" + depends on OF && (ARCH_LPC18XX || COMPILE_TEST) + depends on MFD_SYSCON + select GENERIC_PHY + help + Enable this to support NXP LPC18xx/43xx internal USB OTG PHY. + + This driver is need for USB0 support on LPC18xx/43xx and takes + care of enabling and clock setup. + config PHY_PXA_28NM_HSIC tristate "Marvell USB HSIC 28nm PHY Driver" + depends on HAS_IOMEM select GENERIC_PHY help Enable this to support Marvell USB HSIC PHY driver for Marvell @@ -66,6 +78,7 @@ config PHY_PXA_28NM_HSIC config PHY_PXA_28NM_USB2 tristate "Marvell USB 2.0 28nm PHY Driver" + depends on HAS_IOMEM select GENERIC_PHY help Enable this to support Marvell USB 2.0 PHY driver for Marvell @@ -197,6 +210,8 @@ config PHY_SUN4I_USB tristate "Allwinner sunxi SoC USB PHY driver" depends on ARCH_SUNXI && HAS_IOMEM && OF depends on RESET_CONTROLLER + depends on EXTCON + depends on POWER_SUPPLY select GENERIC_PHY help Enable this to support the transceiver that is part of Allwinner diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index f344e1b2e825..a5b18c18fc12 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_ARMADA375_USBCLUSTER_PHY) += phy-armada375-usb2.o obj-$(CONFIG_BCM_KONA_USB2_PHY) += phy-bcm-kona-usb2.o obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO) += phy-exynos-dp-video.o obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o +obj-$(CONFIG_PHY_LPC18XX_USB_OTG) += phy-lpc18xx-usb-otg.o obj-$(CONFIG_PHY_PXA_28NM_USB2) += phy-pxa-28nm-usb2.o obj-$(CONFIG_PHY_PXA_28NM_HSIC) += phy-pxa-28nm-hsic.o obj-$(CONFIG_PHY_MVEBU_SATA) += phy-mvebu-sata.o diff --git a/drivers/phy/phy-armada375-usb2.c b/drivers/phy/phy-armada375-usb2.c index 8ccc3952c13d..1a3db288c0a9 100644 --- a/drivers/phy/phy-armada375-usb2.c +++ b/drivers/phy/phy-armada375-usb2.c @@ -51,7 +51,7 @@ static int armada375_usb_phy_init(struct phy *phy) return 0; } -static struct phy_ops armada375_usb_phy_ops = { +static const struct phy_ops armada375_usb_phy_ops = { .init = armada375_usb_phy_init, .owner = THIS_MODULE, }; @@ -149,7 +149,6 @@ static struct platform_driver armada375_usb_phy_driver = { .driver = { .of_match_table = of_usb_cluster_table, .name = "armada-375-usb-cluster", - .owner = THIS_MODULE, } }; module_platform_driver(armada375_usb_phy_driver); diff --git a/drivers/phy/phy-bcm-kona-usb2.c b/drivers/phy/phy-bcm-kona-usb2.c index ef2dc1aab2b9..7b67fe49e30b 100644 --- a/drivers/phy/phy-bcm-kona-usb2.c +++ b/drivers/phy/phy-bcm-kona-usb2.c @@ -91,7 +91,7 @@ static int bcm_kona_usb_phy_power_off(struct phy *gphy) return 0; } -static struct phy_ops ops = { +static const struct phy_ops ops = { .init = bcm_kona_usb_phy_init, .power_on = bcm_kona_usb_phy_power_on, .power_off = bcm_kona_usb_phy_power_off, diff --git a/drivers/phy/phy-berlin-sata.c b/drivers/phy/phy-berlin-sata.c index 6f3e06d687de..77a2e054fdea 100644 --- a/drivers/phy/phy-berlin-sata.c +++ b/drivers/phy/phy-berlin-sata.c @@ -176,7 +176,7 @@ static struct phy *phy_berlin_sata_phy_xlate(struct device *dev, return priv->phys[i]->phy; } -static struct phy_ops phy_berlin_sata_ops = { +static const struct phy_ops phy_berlin_sata_ops = { .power_on = phy_berlin_sata_power_on, .power_off = phy_berlin_sata_power_off, .owner = THIS_MODULE, @@ -276,6 +276,7 @@ static const struct of_device_id phy_berlin_sata_of_match[] = { { .compatible = "marvell,berlin2q-sata-phy" }, { }, }; +MODULE_DEVICE_TABLE(of, phy_berlin_sata_of_match); static struct platform_driver phy_berlin_sata_driver = { .probe = phy_berlin_sata_probe, diff --git a/drivers/phy/phy-berlin-usb.c b/drivers/phy/phy-berlin-usb.c index c6fc95b53083..797ba17c404f 100644 --- a/drivers/phy/phy-berlin-usb.c +++ b/drivers/phy/phy-berlin-usb.c @@ -105,9 +105,9 @@ static const u32 phy_berlin_pll_dividers[] = { /* Berlin 2 */ - CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54), - /* Berlin 2CD */ CLK_REF_DIV(0x6) | FEEDBACK_CLK_DIV(0x55), + /* Berlin 2CD/Q */ + CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54), }; struct phy_berlin_usb_priv { @@ -147,12 +147,12 @@ static int phy_berlin_usb_power_on(struct phy *phy) return 0; } -static struct phy_ops phy_berlin_usb_ops = { +static const struct phy_ops phy_berlin_usb_ops = { .power_on = phy_berlin_usb_power_on, .owner = THIS_MODULE, }; -static const struct of_device_id phy_berlin_sata_of_match[] = { +static const struct of_device_id phy_berlin_usb_of_match[] = { { .compatible = "marvell,berlin2-usb-phy", .data = &phy_berlin_pll_dividers[0], @@ -163,12 +163,12 @@ static const struct of_device_id phy_berlin_sata_of_match[] = { }, { }, }; -MODULE_DEVICE_TABLE(of, phy_berlin_sata_of_match); +MODULE_DEVICE_TABLE(of, phy_berlin_usb_of_match); static int phy_berlin_usb_probe(struct platform_device *pdev) { const struct of_device_id *match = - of_match_device(phy_berlin_sata_of_match, &pdev->dev); + of_match_device(phy_berlin_usb_of_match, &pdev->dev); struct phy_berlin_usb_priv *priv; struct resource *res; struct phy *phy; @@ -207,9 +207,8 @@ static struct platform_driver phy_berlin_usb_driver = { .probe = phy_berlin_usb_probe, .driver = { .name = "phy-berlin-usb", - .owner = THIS_MODULE, - .of_match_table = phy_berlin_sata_of_match, - }, + .of_match_table = phy_berlin_usb_of_match, + }, }; module_platform_driver(phy_berlin_usb_driver); diff --git a/drivers/phy/phy-brcmstb-sata.c b/drivers/phy/phy-brcmstb-sata.c index b7e303d28caf..8a2cb16a1937 100644 --- a/drivers/phy/phy-brcmstb-sata.c +++ b/drivers/phy/phy-brcmstb-sata.c @@ -122,7 +122,7 @@ static int brcm_sata_phy_init(struct phy *phy) return 0; } -static struct phy_ops phy_ops_28nm = { +static const struct phy_ops phy_ops_28nm = { .init = brcm_sata_phy_init, .owner = THIS_MODULE, }; diff --git a/drivers/phy/phy-dm816x-usb.c b/drivers/phy/phy-dm816x-usb.c index 7b42555ddd51..b4bbef664d20 100644 --- a/drivers/phy/phy-dm816x-usb.c +++ b/drivers/phy/phy-dm816x-usb.c @@ -113,7 +113,7 @@ static int dm816x_usb_phy_init(struct phy *x) return 0; } -static struct phy_ops ops = { +static const struct phy_ops ops = { .init = dm816x_usb_phy_init, .owner = THIS_MODULE, }; diff --git a/drivers/phy/phy-exynos-dp-video.c b/drivers/phy/phy-exynos-dp-video.c index 179cbf9451aa..34b06154e5d9 100644 --- a/drivers/phy/phy-exynos-dp-video.c +++ b/drivers/phy/phy-exynos-dp-video.c @@ -48,7 +48,7 @@ static int exynos_dp_video_phy_power_off(struct phy *phy) EXYNOS5_PHY_ENABLE, 0); } -static struct phy_ops exynos_dp_video_phy_ops = { +static const struct phy_ops exynos_dp_video_phy_ops = { .power_on = exynos_dp_video_phy_power_on, .power_off = exynos_dp_video_phy_power_off, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-exynos-mipi-video.c b/drivers/phy/phy-exynos-mipi-video.c index df7519a39ba0..2a54caba93b4 100644 --- a/drivers/phy/phy-exynos-mipi-video.c +++ b/drivers/phy/phy-exynos-mipi-video.c @@ -124,7 +124,7 @@ static struct phy *exynos_mipi_video_phy_xlate(struct device *dev, return state->phys[args->args[0]].phy; } -static struct phy_ops exynos_mipi_video_phy_ops = { +static const struct phy_ops exynos_mipi_video_phy_ops = { .power_on = exynos_mipi_video_phy_power_on, .power_off = exynos_mipi_video_phy_power_off, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c index d72ef15b0d68..20696f53303f 100644 --- a/drivers/phy/phy-exynos5-usbdrd.c +++ b/drivers/phy/phy-exynos5-usbdrd.c @@ -537,7 +537,7 @@ static struct phy *exynos5_usbdrd_phy_xlate(struct device *dev, return phy_drd->phys[args->args[0]].phy; } -static struct phy_ops exynos5_usbdrd_phy_ops = { +static const struct phy_ops exynos5_usbdrd_phy_ops = { .init = exynos5_usbdrd_phy_init, .exit = exynos5_usbdrd_phy_exit, .power_on = exynos5_usbdrd_phy_power_on, diff --git a/drivers/phy/phy-exynos5250-sata.c b/drivers/phy/phy-exynos5250-sata.c index bc858cc800a1..60e13afcd9b8 100644 --- a/drivers/phy/phy-exynos5250-sata.c +++ b/drivers/phy/phy-exynos5250-sata.c @@ -154,7 +154,7 @@ static int exynos_sata_phy_init(struct phy *phy) return ret; } -static struct phy_ops exynos_sata_phy_ops = { +static const struct phy_ops exynos_sata_phy_ops = { .init = exynos_sata_phy_init, .power_on = exynos_sata_phy_power_on, .power_off = exynos_sata_phy_power_off, diff --git a/drivers/phy/phy-hix5hd2-sata.c b/drivers/phy/phy-hix5hd2-sata.c index d6b22659cac1..e5ab3aa78b9d 100644 --- a/drivers/phy/phy-hix5hd2-sata.c +++ b/drivers/phy/phy-hix5hd2-sata.c @@ -129,7 +129,7 @@ static int hix5hd2_sata_phy_init(struct phy *phy) return 0; } -static struct phy_ops hix5hd2_sata_phy_ops = { +static const struct phy_ops hix5hd2_sata_phy_ops = { .init = hix5hd2_sata_phy_init, .owner = THIS_MODULE, }; diff --git a/drivers/phy/phy-lpc18xx-usb-otg.c b/drivers/phy/phy-lpc18xx-usb-otg.c new file mode 100644 index 000000000000..3b7a71eb5b7e --- /dev/null +++ b/drivers/phy/phy-lpc18xx-usb-otg.c @@ -0,0 +1,143 @@ +/* + * PHY driver for NXP LPC18xx/43xx internal USB OTG PHY + * + * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +/* USB OTG PHY register offset and bit in CREG */ +#define LPC18XX_CREG_CREG0 0x004 +#define LPC18XX_CREG_CREG0_USB0PHY BIT(5) + +struct lpc18xx_usb_otg_phy { + struct phy *phy; + struct clk *clk; + struct regmap *reg; +}; + +static int lpc18xx_usb_otg_phy_init(struct phy *phy) +{ + struct lpc18xx_usb_otg_phy *lpc = phy_get_drvdata(phy); + int ret; + + /* The PHY must be clocked at 480 MHz */ + ret = clk_set_rate(lpc->clk, 480000000); + if (ret) + return ret; + + return clk_prepare(lpc->clk); +} + +static int lpc18xx_usb_otg_phy_exit(struct phy *phy) +{ + struct lpc18xx_usb_otg_phy *lpc = phy_get_drvdata(phy); + + clk_unprepare(lpc->clk); + + return 0; +} + +static int lpc18xx_usb_otg_phy_power_on(struct phy *phy) +{ + struct lpc18xx_usb_otg_phy *lpc = phy_get_drvdata(phy); + int ret; + + ret = clk_enable(lpc->clk); + if (ret) + return ret; + + /* The bit in CREG is cleared to enable the PHY */ + return regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, + LPC18XX_CREG_CREG0_USB0PHY, 0); +} + +static int lpc18xx_usb_otg_phy_power_off(struct phy *phy) +{ + struct lpc18xx_usb_otg_phy *lpc = phy_get_drvdata(phy); + int ret; + + ret = regmap_update_bits(lpc->reg, LPC18XX_CREG_CREG0, + LPC18XX_CREG_CREG0_USB0PHY, + LPC18XX_CREG_CREG0_USB0PHY); + if (ret) + return ret; + + clk_disable(lpc->clk); + + return 0; +} + +static const struct phy_ops lpc18xx_usb_otg_phy_ops = { + .init = lpc18xx_usb_otg_phy_init, + .exit = lpc18xx_usb_otg_phy_exit, + .power_on = lpc18xx_usb_otg_phy_power_on, + .power_off = lpc18xx_usb_otg_phy_power_off, + .owner = THIS_MODULE, +}; + +static int lpc18xx_usb_otg_phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct lpc18xx_usb_otg_phy *lpc; + + lpc = devm_kzalloc(&pdev->dev, sizeof(*lpc), GFP_KERNEL); + if (!lpc) + return -ENOMEM; + + lpc->reg = syscon_node_to_regmap(pdev->dev.of_node->parent); + if (IS_ERR(lpc->reg)) { + dev_err(&pdev->dev, "failed to get syscon\n"); + return PTR_ERR(lpc->reg); + } + + lpc->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(lpc->clk)) { + dev_err(&pdev->dev, "failed to get clock\n"); + return PTR_ERR(lpc->clk); + } + + lpc->phy = devm_phy_create(&pdev->dev, NULL, &lpc18xx_usb_otg_phy_ops); + if (IS_ERR(lpc->phy)) { + dev_err(&pdev->dev, "failed to create PHY\n"); + return PTR_ERR(lpc->phy); + } + + phy_set_drvdata(lpc->phy, lpc); + + phy_provider = devm_of_phy_provider_register(&pdev->dev, + of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id lpc18xx_usb_otg_phy_match[] = { + { .compatible = "nxp,lpc1850-usb-otg-phy" }, + { } +}; +MODULE_DEVICE_TABLE(of, lpc18xx_usb_otg_phy_match); + +static struct platform_driver lpc18xx_usb_otg_phy_driver = { + .probe = lpc18xx_usb_otg_phy_probe, + .driver = { + .name = "lpc18xx-usb-otg-phy", + .of_match_table = lpc18xx_usb_otg_phy_match, + }, +}; +module_platform_driver(lpc18xx_usb_otg_phy_driver); + +MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>"); +MODULE_DESCRIPTION("NXP LPC18xx/43xx USB OTG PHY driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c index 5e257ef7ac05..c47b56b4a2b8 100644 --- a/drivers/phy/phy-miphy28lp.c +++ b/drivers/phy/phy-miphy28lp.c @@ -1132,7 +1132,7 @@ static struct phy *miphy28lp_xlate(struct device *dev, return miphy_phy->phy; } -static struct phy_ops miphy28lp_ops = { +static const struct phy_ops miphy28lp_ops = { .init = miphy28lp_init, .owner = THIS_MODULE, }; @@ -1268,7 +1268,6 @@ static struct platform_driver miphy28lp_driver = { .probe = miphy28lp_probe, .driver = { .name = "miphy28lp-phy", - .owner = THIS_MODULE, .of_match_table = miphy28lp_of_match, } }; diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c index 0ff354d6e183..00a686a073ed 100644 --- a/drivers/phy/phy-miphy365x.c +++ b/drivers/phy/phy-miphy365x.c @@ -510,7 +510,7 @@ static struct phy *miphy365x_xlate(struct device *dev, return miphy_phy->phy; } -static struct phy_ops miphy365x_ops = { +static const struct phy_ops miphy365x_ops = { .init = miphy365x_init, .owner = THIS_MODULE, }; diff --git a/drivers/phy/phy-mvebu-sata.c b/drivers/phy/phy-mvebu-sata.c index 03b94f92e6f1..768ce92e81ce 100644 --- a/drivers/phy/phy-mvebu-sata.c +++ b/drivers/phy/phy-mvebu-sata.c @@ -75,7 +75,7 @@ static int phy_mvebu_sata_power_off(struct phy *phy) return 0; } -static struct phy_ops phy_mvebu_sata_ops = { +static const struct phy_ops phy_mvebu_sata_ops = { .power_on = phy_mvebu_sata_power_on, .power_off = phy_mvebu_sata_power_off, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c index c1a468686bdc..0fe80589ffbe 100644 --- a/drivers/phy/phy-omap-usb2.c +++ b/drivers/phy/phy-omap-usb2.c @@ -137,7 +137,7 @@ static int omap_usb_init(struct phy *x) return 0; } -static struct phy_ops ops = { +static const struct phy_ops ops = { .init = omap_usb_init, .power_on = omap_usb_power_on, .power_off = omap_usb_power_off, diff --git a/drivers/phy/phy-qcom-apq8064-sata.c b/drivers/phy/phy-qcom-apq8064-sata.c index 4b243f7a10e4..69ce2afac015 100644 --- a/drivers/phy/phy-qcom-apq8064-sata.c +++ b/drivers/phy/phy-qcom-apq8064-sata.c @@ -204,7 +204,7 @@ static int qcom_apq8064_sata_phy_exit(struct phy *generic_phy) return 0; } -static struct phy_ops qcom_apq8064_sata_phy_ops = { +static const struct phy_ops qcom_apq8064_sata_phy_ops = { .init = qcom_apq8064_sata_phy_init, .exit = qcom_apq8064_sata_phy_exit, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-qcom-ipq806x-sata.c b/drivers/phy/phy-qcom-ipq806x-sata.c index 6f2fe2627916..0ad127cc9298 100644 --- a/drivers/phy/phy-qcom-ipq806x-sata.c +++ b/drivers/phy/phy-qcom-ipq806x-sata.c @@ -126,7 +126,7 @@ static int qcom_ipq806x_sata_phy_exit(struct phy *generic_phy) return 0; } -static struct phy_ops qcom_ipq806x_sata_phy_ops = { +static const struct phy_ops qcom_ipq806x_sata_phy_ops = { .init = qcom_ipq806x_sata_phy_init, .exit = qcom_ipq806x_sata_phy_exit, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-qcom-ufs-i.h b/drivers/phy/phy-qcom-ufs-i.h index 591a39175e8a..2bd5ce43a724 100644 --- a/drivers/phy/phy-qcom-ufs-i.h +++ b/drivers/phy/phy-qcom-ufs-i.h @@ -150,7 +150,7 @@ int ufs_qcom_phy_remove(struct phy *generic_phy, struct ufs_qcom_phy *ufs_qcom_phy); struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev, struct ufs_qcom_phy *common_cfg, - struct phy_ops *ufs_qcom_phy_gen_ops, + const struct phy_ops *ufs_qcom_phy_gen_ops, struct ufs_qcom_phy_specific_ops *phy_spec_ops); int ufs_qcom_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy, struct ufs_qcom_phy_calibration *tbl_A, int tbl_size_A, diff --git a/drivers/phy/phy-qcom-ufs-qmp-14nm.c b/drivers/phy/phy-qcom-ufs-qmp-14nm.c index f5fc50a9fce7..56631e77c11d 100644 --- a/drivers/phy/phy-qcom-ufs-qmp-14nm.c +++ b/drivers/phy/phy-qcom-ufs-qmp-14nm.c @@ -115,7 +115,7 @@ static int ufs_qcom_phy_qmp_14nm_is_pcs_ready(struct ufs_qcom_phy *phy_common) return err; } -static struct phy_ops ufs_qcom_phy_qmp_14nm_phy_ops = { +static const struct phy_ops ufs_qcom_phy_qmp_14nm_phy_ops = { .init = ufs_qcom_phy_qmp_14nm_init, .exit = ufs_qcom_phy_exit, .power_on = ufs_qcom_phy_power_on, @@ -191,7 +191,6 @@ static struct platform_driver ufs_qcom_phy_qmp_14nm_driver = { .driver = { .of_match_table = ufs_qcom_phy_qmp_14nm_of_match, .name = "ufs_qcom_phy_qmp_14nm", - .owner = THIS_MODULE, }, }; diff --git a/drivers/phy/phy-qcom-ufs-qmp-20nm.c b/drivers/phy/phy-qcom-ufs-qmp-20nm.c index 8332f96b2c4a..b16ea77d07b9 100644 --- a/drivers/phy/phy-qcom-ufs-qmp-20nm.c +++ b/drivers/phy/phy-qcom-ufs-qmp-20nm.c @@ -171,7 +171,7 @@ static int ufs_qcom_phy_qmp_20nm_is_pcs_ready(struct ufs_qcom_phy *phy_common) return err; } -static struct phy_ops ufs_qcom_phy_qmp_20nm_phy_ops = { +static const struct phy_ops ufs_qcom_phy_qmp_20nm_phy_ops = { .init = ufs_qcom_phy_qmp_20nm_init, .exit = ufs_qcom_phy_exit, .power_on = ufs_qcom_phy_power_on, @@ -247,7 +247,6 @@ static struct platform_driver ufs_qcom_phy_qmp_20nm_driver = { .driver = { .of_match_table = ufs_qcom_phy_qmp_20nm_of_match, .name = "ufs_qcom_phy_qmp_20nm", - .owner = THIS_MODULE, }, }; diff --git a/drivers/phy/phy-qcom-ufs.c b/drivers/phy/phy-qcom-ufs.c index f9c618f0ab6e..107cb57c3513 100644 --- a/drivers/phy/phy-qcom-ufs.c +++ b/drivers/phy/phy-qcom-ufs.c @@ -77,7 +77,7 @@ EXPORT_SYMBOL_GPL(ufs_qcom_phy_calibrate); struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev, struct ufs_qcom_phy *common_cfg, - struct phy_ops *ufs_qcom_phy_gen_ops, + const struct phy_ops *ufs_qcom_phy_gen_ops, struct ufs_qcom_phy_specific_ops *phy_spec_ops) { int err; @@ -432,6 +432,7 @@ out_disable_src: out: return ret; } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_enable_ref_clk); static int ufs_qcom_phy_disable_vreg(struct phy *phy, @@ -474,6 +475,7 @@ void ufs_qcom_phy_disable_ref_clk(struct phy *generic_phy) phy->is_ref_clk_enabled = false; } } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_disable_ref_clk); #define UFS_REF_CLK_EN (1 << 5) @@ -517,11 +519,13 @@ void ufs_qcom_phy_enable_dev_ref_clk(struct phy *generic_phy) { ufs_qcom_phy_dev_ref_clk_ctrl(generic_phy, true); } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_enable_dev_ref_clk); void ufs_qcom_phy_disable_dev_ref_clk(struct phy *generic_phy) { ufs_qcom_phy_dev_ref_clk_ctrl(generic_phy, false); } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_disable_dev_ref_clk); /* Turn ON M-PHY RMMI interface clocks */ int ufs_qcom_phy_enable_iface_clk(struct phy *generic_phy) @@ -550,6 +554,7 @@ int ufs_qcom_phy_enable_iface_clk(struct phy *generic_phy) out: return ret; } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_enable_iface_clk); /* Turn OFF M-PHY RMMI interface clocks */ void ufs_qcom_phy_disable_iface_clk(struct phy *generic_phy) @@ -562,6 +567,7 @@ void ufs_qcom_phy_disable_iface_clk(struct phy *generic_phy) phy->is_iface_clk_enabled = false; } } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_disable_iface_clk); int ufs_qcom_phy_start_serdes(struct phy *generic_phy) { @@ -578,6 +584,7 @@ int ufs_qcom_phy_start_serdes(struct phy *generic_phy) return ret; } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_start_serdes); int ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes) { @@ -595,6 +602,7 @@ int ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes) return ret; } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_set_tx_lane_enable); void ufs_qcom_phy_save_controller_version(struct phy *generic_phy, u8 major, u16 minor, u16 step) @@ -605,6 +613,7 @@ void ufs_qcom_phy_save_controller_version(struct phy *generic_phy, ufs_qcom_phy->host_ctrl_rev_minor = minor; ufs_qcom_phy->host_ctrl_rev_step = step; } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_save_controller_version); int ufs_qcom_phy_calibrate_phy(struct phy *generic_phy, bool is_rate_B) { @@ -625,6 +634,7 @@ int ufs_qcom_phy_calibrate_phy(struct phy *generic_phy, bool is_rate_B) return ret; } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_calibrate_phy); int ufs_qcom_phy_remove(struct phy *generic_phy, struct ufs_qcom_phy *ufs_qcom_phy) @@ -662,6 +672,7 @@ int ufs_qcom_phy_is_pcs_ready(struct phy *generic_phy) return ufs_qcom_phy->phy_spec_ops-> is_physical_coding_sublayer_ready(ufs_qcom_phy); } +EXPORT_SYMBOL_GPL(ufs_qcom_phy_is_pcs_ready); int ufs_qcom_phy_power_on(struct phy *generic_phy) { diff --git a/drivers/phy/phy-rcar-gen2.c b/drivers/phy/phy-rcar-gen2.c index 39d9b2995435..6e0d9fa8e1d1 100644 --- a/drivers/phy/phy-rcar-gen2.c +++ b/drivers/phy/phy-rcar-gen2.c @@ -184,7 +184,7 @@ static int rcar_gen2_phy_power_off(struct phy *p) return 0; } -static struct phy_ops rcar_gen2_phy_ops = { +static const struct phy_ops rcar_gen2_phy_ops = { .init = rcar_gen2_phy_init, .exit = rcar_gen2_phy_exit, .power_on = rcar_gen2_phy_power_on, diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c index 7d4c33643768..91d6f342c565 100644 --- a/drivers/phy/phy-rockchip-usb.c +++ b/drivers/phy/phy-rockchip-usb.c @@ -84,7 +84,7 @@ static int rockchip_usb_phy_power_on(struct phy *_phy) return 0; } -static struct phy_ops ops = { +static const struct phy_ops ops = { .power_on = rockchip_usb_phy_power_on, .power_off = rockchip_usb_phy_power_off, .owner = THIS_MODULE, @@ -98,6 +98,7 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev) struct device_node *child; struct regmap *grf; unsigned int reg_offset; + int err; grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); if (IS_ERR(grf)) { @@ -129,6 +130,11 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev) return PTR_ERR(rk_phy->phy); } phy_set_drvdata(rk_phy->phy, rk_phy); + + /* only power up usb phy when it use, so disable it when init*/ + err = rockchip_usb_phy_power(rk_phy, 1); + if (err) + return err; } phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); @@ -146,7 +152,6 @@ static struct platform_driver rockchip_usb_driver = { .probe = rockchip_usb_phy_probe, .driver = { .name = "rockchip-usb-phy", - .owner = THIS_MODULE, .of_match_table = rockchip_usb_phy_dt_ids, }, }; diff --git a/drivers/phy/phy-samsung-usb2.c b/drivers/phy/phy-samsung-usb2.c index 55b6994932e3..f278a9c547e1 100644 --- a/drivers/phy/phy-samsung-usb2.c +++ b/drivers/phy/phy-samsung-usb2.c @@ -71,7 +71,7 @@ static int samsung_usb2_phy_power_off(struct phy *phy) return 0; } -static struct phy_ops samsung_usb2_phy_ops = { +static const struct phy_ops samsung_usb2_phy_ops = { .power_on = samsung_usb2_phy_power_on, .power_off = samsung_usb2_phy_power_off, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-spear1310-miphy.c b/drivers/phy/phy-spear1310-miphy.c index 45d0005b2203..ed67e98e54ca 100644 --- a/drivers/phy/phy-spear1310-miphy.c +++ b/drivers/phy/phy-spear1310-miphy.c @@ -179,7 +179,7 @@ static const struct of_device_id spear1310_miphy_of_match[] = { }; MODULE_DEVICE_TABLE(of, spear1310_miphy_of_match); -static struct phy_ops spear1310_miphy_ops = { +static const struct phy_ops spear1310_miphy_ops = { .init = spear1310_miphy_init, .exit = spear1310_miphy_exit, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-spear1340-miphy.c b/drivers/phy/phy-spear1340-miphy.c index 494240da4a39..97280c0cf612 100644 --- a/drivers/phy/phy-spear1340-miphy.c +++ b/drivers/phy/phy-spear1340-miphy.c @@ -189,7 +189,7 @@ static const struct of_device_id spear1340_miphy_of_match[] = { }; MODULE_DEVICE_TABLE(of, spear1340_miphy_of_match); -static struct phy_ops spear1340_miphy_ops = { +static const struct phy_ops spear1340_miphy_ops = { .init = spear1340_miphy_init, .exit = spear1340_miphy_exit, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-stih41x-usb.c b/drivers/phy/phy-stih41x-usb.c index c093b472b57d..0ac74639ad02 100644 --- a/drivers/phy/phy-stih41x-usb.c +++ b/drivers/phy/phy-stih41x-usb.c @@ -112,7 +112,7 @@ static int stih41x_usb_phy_power_off(struct phy *phy) return 0; } -static struct phy_ops stih41x_usb_phy_ops = { +static const struct phy_ops stih41x_usb_phy_ops = { .init = stih41x_usb_phy_init, .power_on = stih41x_usb_phy_power_on, .power_off = stih41x_usb_phy_power_off, diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index e17c539e4f6f..731b395d6e6a 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -1,7 +1,7 @@ /* * Allwinner sun4i USB phy driver * - * Copyright (C) 2014 Hans de Goede <hdegoede@redhat.com> + * Copyright (C) 2014-2015 Hans de Goede <hdegoede@redhat.com> * * Based on code from * Allwinner Technology Co., Ltd. <www.allwinnertech.com> @@ -22,23 +22,30 @@ */ #include <linux/clk.h> +#include <linux/delay.h> #include <linux/err.h> +#include <linux/extcon.h> #include <linux/io.h> +#include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_gpio.h> #include <linux/phy/phy.h> #include <linux/phy/phy-sun4i-usb.h> #include <linux/platform_device.h> +#include <linux/power_supply.h> #include <linux/regulator/consumer.h> #include <linux/reset.h> +#include <linux/workqueue.h> #define REG_ISCR 0x00 -#define REG_PHYCTL 0x04 +#define REG_PHYCTL_A10 0x04 #define REG_PHYBIST 0x08 #define REG_PHYTUNE 0x0c +#define REG_PHYCTL_A33 0x10 #define PHYCTL_DATA BIT(7) @@ -47,6 +54,17 @@ #define SUNXI_AHB_INCRX_ALIGN_EN BIT(8) #define SUNXI_ULPI_BYPASS_EN BIT(0) +/* ISCR, Interface Status and Control bits */ +#define ISCR_ID_PULLUP_EN (1 << 17) +#define ISCR_DPDM_PULLUP_EN (1 << 16) +/* sunxi has the phy id/vbus pins not connected, so we use the force bits */ +#define ISCR_FORCE_ID_MASK (3 << 14) +#define ISCR_FORCE_ID_LOW (2 << 14) +#define ISCR_FORCE_ID_HIGH (3 << 14) +#define ISCR_FORCE_VBUS_MASK (3 << 12) +#define ISCR_FORCE_VBUS_LOW (2 << 12) +#define ISCR_FORCE_VBUS_HIGH (3 << 12) + /* Common Control Bits for Both PHYs */ #define PHY_PLL_BW 0x03 #define PHY_RES45_CAL_EN 0x0c @@ -63,60 +81,124 @@ #define MAX_PHYS 3 +/* + * Note do not raise the debounce time, we must report Vusb high within 100ms + * otherwise we get Vbus errors + */ +#define DEBOUNCE_TIME msecs_to_jiffies(50) +#define POLL_TIME msecs_to_jiffies(250) + struct sun4i_usb_phy_data { void __iomem *base; struct mutex mutex; int num_phys; u32 disc_thresh; + bool has_a33_phyctl; struct sun4i_usb_phy { struct phy *phy; void __iomem *pmu; struct regulator *vbus; struct reset_control *reset; struct clk *clk; + bool regulator_on; int index; } phys[MAX_PHYS]; + /* phy0 / otg related variables */ + struct extcon_dev *extcon; + bool phy0_init; + bool phy0_poll; + struct gpio_desc *id_det_gpio; + struct gpio_desc *vbus_det_gpio; + struct power_supply *vbus_power_supply; + struct notifier_block vbus_power_nb; + bool vbus_power_nb_registered; + int id_det_irq; + int vbus_det_irq; + int id_det; + int vbus_det; + struct delayed_work detect; }; #define to_sun4i_usb_phy_data(phy) \ container_of((phy), struct sun4i_usb_phy_data, phys[(phy)->index]) +static void sun4i_usb_phy0_update_iscr(struct phy *_phy, u32 clr, u32 set) +{ + struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); + struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); + u32 iscr; + + iscr = readl(data->base + REG_ISCR); + iscr &= ~clr; + iscr |= set; + writel(iscr, data->base + REG_ISCR); +} + +static void sun4i_usb_phy0_set_id_detect(struct phy *phy, u32 val) +{ + if (val) + val = ISCR_FORCE_ID_HIGH; + else + val = ISCR_FORCE_ID_LOW; + + sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_ID_MASK, val); +} + +static void sun4i_usb_phy0_set_vbus_detect(struct phy *phy, u32 val) +{ + if (val) + val = ISCR_FORCE_VBUS_HIGH; + else + val = ISCR_FORCE_VBUS_LOW; + + sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_VBUS_MASK, val); +} + static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data, int len) { struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy); u32 temp, usbc_bit = BIT(phy->index * 2); + void *phyctl; int i; mutex_lock(&phy_data->mutex); + if (phy_data->has_a33_phyctl) { + phyctl = phy_data->base + REG_PHYCTL_A33; + /* A33 needs us to set phyctl to 0 explicitly */ + writel(0, phyctl); + } else { + phyctl = phy_data->base + REG_PHYCTL_A10; + } + for (i = 0; i < len; i++) { - temp = readl(phy_data->base + REG_PHYCTL); + temp = readl(phyctl); /* clear the address portion */ temp &= ~(0xff << 8); /* set the address */ temp |= ((addr + i) << 8); - writel(temp, phy_data->base + REG_PHYCTL); + writel(temp, phyctl); /* set the data bit and clear usbc bit*/ - temp = readb(phy_data->base + REG_PHYCTL); + temp = readb(phyctl); if (data & 0x1) temp |= PHYCTL_DATA; else temp &= ~PHYCTL_DATA; temp &= ~usbc_bit; - writeb(temp, phy_data->base + REG_PHYCTL); + writeb(temp, phyctl); /* pulse usbc_bit */ - temp = readb(phy_data->base + REG_PHYCTL); + temp = readb(phyctl); temp |= usbc_bit; - writeb(temp, phy_data->base + REG_PHYCTL); + writeb(temp, phyctl); - temp = readb(phy_data->base + REG_PHYCTL); + temp = readb(phyctl); temp &= ~usbc_bit; - writeb(temp, phy_data->base + REG_PHYCTL); + writeb(temp, phyctl); data >>= 1; } @@ -171,12 +253,39 @@ static int sun4i_usb_phy_init(struct phy *_phy) sun4i_usb_phy_passby(phy, 1); + if (phy->index == 0) { + data->phy0_init = true; + + /* Enable pull-ups */ + sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_DPDM_PULLUP_EN); + sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_ID_PULLUP_EN); + + if (data->id_det_gpio) { + /* OTG mode, force ISCR and cable state updates */ + data->id_det = -1; + data->vbus_det = -1; + queue_delayed_work(system_wq, &data->detect, 0); + } else { + /* Host only mode */ + sun4i_usb_phy0_set_id_detect(_phy, 0); + sun4i_usb_phy0_set_vbus_detect(_phy, 1); + } + } + return 0; } static int sun4i_usb_phy_exit(struct phy *_phy) { struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); + struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); + + if (phy->index == 0) { + /* Disable pull-ups */ + sun4i_usb_phy0_update_iscr(_phy, ISCR_DPDM_PULLUP_EN, 0); + sun4i_usb_phy0_update_iscr(_phy, ISCR_ID_PULLUP_EN, 0); + data->phy0_init = false; + } sun4i_usb_phy_passby(phy, 0); reset_control_assert(phy->reset); @@ -185,23 +294,74 @@ static int sun4i_usb_phy_exit(struct phy *_phy) return 0; } +static int sun4i_usb_phy0_get_vbus_det(struct sun4i_usb_phy_data *data) +{ + if (data->vbus_det_gpio) + return gpiod_get_value_cansleep(data->vbus_det_gpio); + + if (data->vbus_power_supply) { + union power_supply_propval val; + int r; + + r = power_supply_get_property(data->vbus_power_supply, + POWER_SUPPLY_PROP_PRESENT, &val); + if (r == 0) + return val.intval; + } + + /* Fallback: report vbus as high */ + return 1; +} + +static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data) +{ + return data->vbus_det_gpio || data->vbus_power_supply; +} + static int sun4i_usb_phy_power_on(struct phy *_phy) { struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); - int ret = 0; + struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); + int ret; + + if (!phy->vbus || phy->regulator_on) + return 0; + + /* For phy0 only turn on Vbus if we don't have an ext. Vbus */ + if (phy->index == 0 && sun4i_usb_phy0_have_vbus_det(data) && + data->vbus_det) + return 0; + + ret = regulator_enable(phy->vbus); + if (ret) + return ret; + + phy->regulator_on = true; - if (phy->vbus) - ret = regulator_enable(phy->vbus); + /* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */ + if (phy->index == 0 && data->vbus_det_gpio && data->phy0_poll) + mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); - return ret; + return 0; } static int sun4i_usb_phy_power_off(struct phy *_phy) { struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); + struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); + + if (!phy->vbus || !phy->regulator_on) + return 0; + + regulator_disable(phy->vbus); + phy->regulator_on = false; - if (phy->vbus) - regulator_disable(phy->vbus); + /* + * phy0 vbus typically slowly discharges, sometimes this causes the + * Vbus gpio to not trigger an edge irq on Vbus off, so force a rescan. + */ + if (phy->index == 0 && data->vbus_det_gpio && !data->phy0_poll) + mod_delayed_work(system_wq, &data->detect, POLL_TIME); return 0; } @@ -212,8 +372,9 @@ void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled) sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2, 2); } +EXPORT_SYMBOL_GPL(sun4i_usb_phy_set_squelch_detect); -static struct phy_ops sun4i_usb_phy_ops = { +static const struct phy_ops sun4i_usb_phy_ops = { .init = sun4i_usb_phy_init, .exit = sun4i_usb_phy_exit, .power_on = sun4i_usb_phy_power_on, @@ -221,6 +382,95 @@ static struct phy_ops sun4i_usb_phy_ops = { .owner = THIS_MODULE, }; +static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) +{ + struct sun4i_usb_phy_data *data = + container_of(work, struct sun4i_usb_phy_data, detect.work); + struct phy *phy0 = data->phys[0].phy; + int id_det, vbus_det, id_notify = 0, vbus_notify = 0; + + id_det = gpiod_get_value_cansleep(data->id_det_gpio); + vbus_det = sun4i_usb_phy0_get_vbus_det(data); + + mutex_lock(&phy0->mutex); + + if (!data->phy0_init) { + mutex_unlock(&phy0->mutex); + return; + } + + if (id_det != data->id_det) { + /* + * When a host cable (id == 0) gets plugged in on systems + * without vbus detection report vbus low for long enough for + * the musb-ip to end the current device session. + */ + if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) { + sun4i_usb_phy0_set_vbus_detect(phy0, 0); + msleep(200); + sun4i_usb_phy0_set_vbus_detect(phy0, 1); + } + sun4i_usb_phy0_set_id_detect(phy0, id_det); + data->id_det = id_det; + id_notify = 1; + } + + if (vbus_det != data->vbus_det) { + sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det); + data->vbus_det = vbus_det; + vbus_notify = 1; + } + + mutex_unlock(&phy0->mutex); + + if (id_notify) { + extcon_set_cable_state_(data->extcon, EXTCON_USB_HOST, + !id_det); + /* + * When a host cable gets unplugged (id == 1) on systems + * without vbus detection report vbus low for long enough to + * the musb-ip to end the current host session. + */ + if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) { + mutex_lock(&phy0->mutex); + sun4i_usb_phy0_set_vbus_detect(phy0, 0); + msleep(1000); + sun4i_usb_phy0_set_vbus_detect(phy0, 1); + mutex_unlock(&phy0->mutex); + } + } + + if (vbus_notify) + extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det); + + if (data->phy0_poll) + queue_delayed_work(system_wq, &data->detect, POLL_TIME); +} + +static irqreturn_t sun4i_usb_phy0_id_vbus_det_irq(int irq, void *dev_id) +{ + struct sun4i_usb_phy_data *data = dev_id; + + /* vbus or id changed, let the pins settle and then scan them */ + mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); + + return IRQ_HANDLED; +} + +static int sun4i_usb_phy0_vbus_notify(struct notifier_block *nb, + unsigned long val, void *v) +{ + struct sun4i_usb_phy_data *data = + container_of(nb, struct sun4i_usb_phy_data, vbus_power_nb); + struct power_supply *psy = v; + + /* Properties on the vbus_power_supply changed, scan vbus_det */ + if (val == PSY_EVENT_PROP_CHANGED && psy == data->vbus_power_supply) + mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); + + return NOTIFY_OK; +} + static struct phy *sun4i_usb_phy_xlate(struct device *dev, struct of_phandle_args *args) { @@ -232,6 +482,29 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev, return data->phys[args->args[0]].phy; } +static int sun4i_usb_phy_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct sun4i_usb_phy_data *data = dev_get_drvdata(dev); + + if (data->vbus_power_nb_registered) + power_supply_unreg_notifier(&data->vbus_power_nb); + if (data->id_det_irq >= 0) + devm_free_irq(dev, data->id_det_irq, data); + if (data->vbus_det_irq >= 0) + devm_free_irq(dev, data->vbus_det_irq, data); + + cancel_delayed_work_sync(&data->detect); + + return 0; +} + +static const unsigned int sun4i_usb_phy0_cable[] = { + EXTCON_USB, + EXTCON_USB_HOST, + EXTCON_NONE, +}; + static int sun4i_usb_phy_probe(struct platform_device *pdev) { struct sun4i_usb_phy_data *data; @@ -240,35 +513,87 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) struct phy_provider *phy_provider; bool dedicated_clocks; struct resource *res; - int i; + int i, ret; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; mutex_init(&data->mutex); + INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan); + dev_set_drvdata(dev, data); - if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy")) + if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") || + of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") || + of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy")) data->num_phys = 2; else data->num_phys = 3; - if (of_device_is_compatible(np, "allwinner,sun4i-a10-usb-phy") || - of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy")) - data->disc_thresh = 3; - else + if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") || + of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy")) data->disc_thresh = 2; + else + data->disc_thresh = 3; - if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy")) + if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy") || + of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") || + of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy")) dedicated_clocks = true; else dedicated_clocks = false; + if (of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy")) + data->has_a33_phyctl = true; + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl"); data->base = devm_ioremap_resource(dev, res); if (IS_ERR(data->base)) return PTR_ERR(data->base); + data->id_det_gpio = devm_gpiod_get(dev, "usb0_id_det", GPIOD_IN); + if (IS_ERR(data->id_det_gpio)) { + if (PTR_ERR(data->id_det_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + data->id_det_gpio = NULL; + } + + data->vbus_det_gpio = devm_gpiod_get(dev, "usb0_vbus_det", GPIOD_IN); + if (IS_ERR(data->vbus_det_gpio)) { + if (PTR_ERR(data->vbus_det_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + data->vbus_det_gpio = NULL; + } + + if (of_find_property(np, "usb0_vbus_power-supply", NULL)) { + data->vbus_power_supply = devm_power_supply_get_by_phandle(dev, + "usb0_vbus_power-supply"); + if (IS_ERR(data->vbus_power_supply)) + return PTR_ERR(data->vbus_power_supply); + + if (!data->vbus_power_supply) + return -EPROBE_DEFER; + } + + /* vbus_det without id_det makes no sense, and is not supported */ + if (sun4i_usb_phy0_have_vbus_det(data) && !data->id_det_gpio) { + dev_err(dev, "usb0_id_det missing or invalid\n"); + return -ENODEV; + } + + if (data->id_det_gpio) { + data->extcon = devm_extcon_dev_allocate(dev, + sun4i_usb_phy0_cable); + if (IS_ERR(data->extcon)) + return PTR_ERR(data->extcon); + + ret = devm_extcon_dev_register(dev, data->extcon); + if (ret) { + dev_err(dev, "failed to register extcon: %d\n", ret); + return ret; + } + } + for (i = 0; i < data->num_phys; i++) { struct sun4i_usb_phy *phy = data->phys + i; char name[16]; @@ -318,10 +643,54 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) phy_set_drvdata(phy->phy, &data->phys[i]); } - dev_set_drvdata(dev, data); + data->id_det_irq = gpiod_to_irq(data->id_det_gpio); + data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio); + if ((data->id_det_gpio && data->id_det_irq < 0) || + (data->vbus_det_gpio && data->vbus_det_irq < 0)) + data->phy0_poll = true; + + if (data->id_det_irq >= 0) { + ret = devm_request_irq(dev, data->id_det_irq, + sun4i_usb_phy0_id_vbus_det_irq, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "usb0-id-det", data); + if (ret) { + dev_err(dev, "Err requesting id-det-irq: %d\n", ret); + return ret; + } + } + + if (data->vbus_det_irq >= 0) { + ret = devm_request_irq(dev, data->vbus_det_irq, + sun4i_usb_phy0_id_vbus_det_irq, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "usb0-vbus-det", data); + if (ret) { + dev_err(dev, "Err requesting vbus-det-irq: %d\n", ret); + data->vbus_det_irq = -1; + sun4i_usb_phy_remove(pdev); /* Stop detect work */ + return ret; + } + } + + if (data->vbus_power_supply) { + data->vbus_power_nb.notifier_call = sun4i_usb_phy0_vbus_notify; + data->vbus_power_nb.priority = 0; + ret = power_supply_reg_notifier(&data->vbus_power_nb); + if (ret) { + sun4i_usb_phy_remove(pdev); /* Stop detect work */ + return ret; + } + data->vbus_power_nb_registered = true; + } + phy_provider = devm_of_phy_provider_register(dev, sun4i_usb_phy_xlate); + if (IS_ERR(phy_provider)) { + sun4i_usb_phy_remove(pdev); /* Stop detect work */ + return PTR_ERR(phy_provider); + } - return PTR_ERR_OR_ZERO(phy_provider); + return 0; } static const struct of_device_id sun4i_usb_phy_of_match[] = { @@ -329,12 +698,15 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = { { .compatible = "allwinner,sun5i-a13-usb-phy" }, { .compatible = "allwinner,sun6i-a31-usb-phy" }, { .compatible = "allwinner,sun7i-a20-usb-phy" }, + { .compatible = "allwinner,sun8i-a23-usb-phy" }, + { .compatible = "allwinner,sun8i-a33-usb-phy" }, { }, }; MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match); static struct platform_driver sun4i_usb_phy_driver = { .probe = sun4i_usb_phy_probe, + .remove = sun4i_usb_phy_remove, .driver = { .of_match_table = sun4i_usb_phy_of_match, .name = "sun4i-usb-phy", diff --git a/drivers/phy/phy-sun9i-usb.c b/drivers/phy/phy-sun9i-usb.c index 0095914a662c..ac4f31abefe3 100644 --- a/drivers/phy/phy-sun9i-usb.c +++ b/drivers/phy/phy-sun9i-usb.c @@ -114,7 +114,7 @@ static int sun9i_usb_phy_exit(struct phy *_phy) return 0; } -static struct phy_ops sun9i_usb_phy_ops = { +static const struct phy_ops sun9i_usb_phy_ops = { .init = sun9i_usb_phy_init, .exit = sun9i_usb_phy_exit, .owner = THIS_MODULE, diff --git a/drivers/phy/phy-ti-pipe3.c b/drivers/phy/phy-ti-pipe3.c index 53f295c1bab1..93bc1120af12 100644 --- a/drivers/phy/phy-ti-pipe3.c +++ b/drivers/phy/phy-ti-pipe3.c @@ -28,7 +28,8 @@ #include <linux/delay.h> #include <linux/phy/omap_control_phy.h> #include <linux/of_platform.h> -#include <linux/spinlock.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> #define PLL_STATUS 0x00000004 #define PLL_GO 0x00000008 @@ -53,6 +54,8 @@ #define PLL_LOCK 0x2 #define PLL_IDLE 0x1 +#define SATA_PLL_SOFT_RESET BIT(18) + /* * This is an Empirical value that works, need to confirm the actual * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status @@ -83,10 +86,9 @@ struct ti_pipe3 { struct clk *refclk; struct clk *div_clk; struct pipe3_dpll_map *dpll_map; - bool enabled; - spinlock_t lock; /* serialize clock enable/disable */ - /* the below flag is needed specifically for SATA */ - bool refclk_enabled; + struct regmap *dpll_reset_syscon; /* ctrl. reg. acces */ + unsigned int dpll_reset_reg; /* reg. index within syscon */ + bool sata_refclk_enabled; }; static struct pipe3_dpll_map dpll_map_usb[] = { @@ -137,6 +139,9 @@ static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(struct ti_pipe3 *phy) return NULL; } +static int ti_pipe3_enable_clocks(struct ti_pipe3 *phy); +static void ti_pipe3_disable_clocks(struct ti_pipe3 *phy); + static int ti_pipe3_power_off(struct phy *x) { struct ti_pipe3 *phy = phy_get_drvdata(x); @@ -217,6 +222,7 @@ static int ti_pipe3_init(struct phy *x) u32 val; int ret = 0; + ti_pipe3_enable_clocks(phy); /* * Set pcie_pcs register to 0x96 for proper functioning of phy * as recommended in AM572x TRM SPRUHZ6, section 18.5.2.2, table @@ -250,36 +256,49 @@ static int ti_pipe3_exit(struct phy *x) u32 val; unsigned long timeout; - /* SATA DPLL can't be powered down due to Errata i783 and PCIe - * does not have internal DPLL + /* If dpll_reset_syscon is not present we wont power down SATA DPLL + * due to Errata i783 */ - if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata") || - of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-pcie")) + if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata") && + !phy->dpll_reset_syscon) return 0; - /* Put DPLL in IDLE mode */ - val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); - val |= PLL_IDLE; - ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + /* PCIe doesn't have internal DPLL */ + if (!of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-pcie")) { + /* Put DPLL in IDLE mode */ + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val |= PLL_IDLE; + ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); - /* wait for LDO and Oscillator to power down */ - timeout = jiffies + msecs_to_jiffies(PLL_IDLE_TIME); - do { - cpu_relax(); - val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); - if ((val & PLL_TICOPWDN) && (val & PLL_LDOPWDN)) - break; - } while (!time_after(jiffies, timeout)); + /* wait for LDO and Oscillator to power down */ + timeout = jiffies + msecs_to_jiffies(PLL_IDLE_TIME); + do { + cpu_relax(); + val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS); + if ((val & PLL_TICOPWDN) && (val & PLL_LDOPWDN)) + break; + } while (!time_after(jiffies, timeout)); + + if (!(val & PLL_TICOPWDN) || !(val & PLL_LDOPWDN)) { + dev_err(phy->dev, "Failed to power down: PLL_STATUS 0x%x\n", + val); + return -EBUSY; + } + } - if (!(val & PLL_TICOPWDN) || !(val & PLL_LDOPWDN)) { - dev_err(phy->dev, "Failed to power down: PLL_STATUS 0x%x\n", - val); - return -EBUSY; + /* i783: SATA needs control bit toggle after PLL unlock */ + if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata")) { + regmap_update_bits(phy->dpll_reset_syscon, phy->dpll_reset_reg, + SATA_PLL_SOFT_RESET, SATA_PLL_SOFT_RESET); + regmap_update_bits(phy->dpll_reset_syscon, phy->dpll_reset_reg, + SATA_PLL_SOFT_RESET, 0); } + ti_pipe3_disable_clocks(phy); + return 0; } -static struct phy_ops ops = { +static const struct phy_ops ops = { .init = ti_pipe3_init, .exit = ti_pipe3_exit, .power_on = ti_pipe3_power_on, @@ -306,7 +325,6 @@ static int ti_pipe3_probe(struct platform_device *pdev) return -ENOMEM; phy->dev = &pdev->dev; - spin_lock_init(&phy->lock); if (!of_device_is_compatible(node, "ti,phy-pipe3-pcie")) { match = of_match_device(ti_pipe3_id_table, &pdev->dev); @@ -350,6 +368,21 @@ static int ti_pipe3_probe(struct platform_device *pdev) } } else { phy->wkupclk = ERR_PTR(-ENODEV); + phy->dpll_reset_syscon = syscon_regmap_lookup_by_phandle(node, + "syscon-pllreset"); + if (IS_ERR(phy->dpll_reset_syscon)) { + dev_info(&pdev->dev, + "can't get syscon-pllreset, sata dpll won't idle\n"); + phy->dpll_reset_syscon = NULL; + } else { + if (of_property_read_u32_index(node, + "syscon-pllreset", 1, + &phy->dpll_reset_reg)) { + dev_err(&pdev->dev, + "couldn't get pllreset reg. offset\n"); + return -EINVAL; + } + } } if (of_device_is_compatible(node, "ti,phy-pipe3-pcie")) { @@ -403,6 +436,16 @@ static int ti_pipe3_probe(struct platform_device *pdev) platform_set_drvdata(pdev, phy); pm_runtime_enable(phy->dev); + /* + * Prevent auto-disable of refclk for SATA PHY due to Errata i783 + */ + if (of_device_is_compatible(node, "ti,phy-pipe3-sata")) { + if (!IS_ERR(phy->refclk)) { + clk_prepare_enable(phy->refclk); + phy->sata_refclk_enabled = true; + } + } + generic_phy = devm_phy_create(phy->dev, NULL, &ops); if (IS_ERR(generic_phy)) return PTR_ERR(generic_phy); @@ -413,63 +456,33 @@ static int ti_pipe3_probe(struct platform_device *pdev) if (IS_ERR(phy_provider)) return PTR_ERR(phy_provider); - pm_runtime_get(&pdev->dev); - return 0; } static int ti_pipe3_remove(struct platform_device *pdev) { - if (!pm_runtime_suspended(&pdev->dev)) - pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; } -#ifdef CONFIG_PM -static int ti_pipe3_enable_refclk(struct ti_pipe3 *phy) +static int ti_pipe3_enable_clocks(struct ti_pipe3 *phy) { - if (!IS_ERR(phy->refclk) && !phy->refclk_enabled) { - int ret; + int ret = 0; + if (!IS_ERR(phy->refclk)) { ret = clk_prepare_enable(phy->refclk); if (ret) { dev_err(phy->dev, "Failed to enable refclk %d\n", ret); return ret; } - phy->refclk_enabled = true; } - return 0; -} - -static void ti_pipe3_disable_refclk(struct ti_pipe3 *phy) -{ - if (!IS_ERR(phy->refclk)) - clk_disable_unprepare(phy->refclk); - - phy->refclk_enabled = false; -} - -static int ti_pipe3_enable_clocks(struct ti_pipe3 *phy) -{ - int ret = 0; - unsigned long flags; - - spin_lock_irqsave(&phy->lock, flags); - if (phy->enabled) - goto err1; - - ret = ti_pipe3_enable_refclk(phy); - if (ret) - goto err1; - if (!IS_ERR(phy->wkupclk)) { ret = clk_prepare_enable(phy->wkupclk); if (ret) { dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret); - goto err2; + goto disable_refclk; } } @@ -477,96 +490,43 @@ static int ti_pipe3_enable_clocks(struct ti_pipe3 *phy) ret = clk_prepare_enable(phy->div_clk); if (ret) { dev_err(phy->dev, "Failed to enable div_clk %d\n", ret); - goto err3; + goto disable_wkupclk; } } - phy->enabled = true; - spin_unlock_irqrestore(&phy->lock, flags); return 0; -err3: +disable_wkupclk: if (!IS_ERR(phy->wkupclk)) clk_disable_unprepare(phy->wkupclk); -err2: +disable_refclk: if (!IS_ERR(phy->refclk)) clk_disable_unprepare(phy->refclk); - ti_pipe3_disable_refclk(phy); -err1: - spin_unlock_irqrestore(&phy->lock, flags); return ret; } static void ti_pipe3_disable_clocks(struct ti_pipe3 *phy) { - unsigned long flags; - - spin_lock_irqsave(&phy->lock, flags); - if (!phy->enabled) { - spin_unlock_irqrestore(&phy->lock, flags); - return; - } - if (!IS_ERR(phy->wkupclk)) clk_disable_unprepare(phy->wkupclk); - /* Don't disable refclk for SATA PHY due to Errata i783 */ - if (!of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata")) - ti_pipe3_disable_refclk(phy); + if (!IS_ERR(phy->refclk)) { + clk_disable_unprepare(phy->refclk); + /* + * SATA refclk needs an additional disable as we left it + * on in probe to avoid Errata i783 + */ + if (phy->sata_refclk_enabled) { + clk_disable_unprepare(phy->refclk); + phy->sata_refclk_enabled = false; + } + } + if (!IS_ERR(phy->div_clk)) clk_disable_unprepare(phy->div_clk); - phy->enabled = false; - spin_unlock_irqrestore(&phy->lock, flags); } -static int ti_pipe3_runtime_suspend(struct device *dev) -{ - struct ti_pipe3 *phy = dev_get_drvdata(dev); - - ti_pipe3_disable_clocks(phy); - return 0; -} - -static int ti_pipe3_runtime_resume(struct device *dev) -{ - struct ti_pipe3 *phy = dev_get_drvdata(dev); - int ret = 0; - - ret = ti_pipe3_enable_clocks(phy); - return ret; -} - -static int ti_pipe3_suspend(struct device *dev) -{ - struct ti_pipe3 *phy = dev_get_drvdata(dev); - - ti_pipe3_disable_clocks(phy); - return 0; -} - -static int ti_pipe3_resume(struct device *dev) -{ - struct ti_pipe3 *phy = dev_get_drvdata(dev); - int ret; - - ret = ti_pipe3_enable_clocks(phy); - if (ret) - return ret; - - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - return 0; -} -#endif - -static const struct dev_pm_ops ti_pipe3_pm_ops = { - SET_RUNTIME_PM_OPS(ti_pipe3_runtime_suspend, - ti_pipe3_runtime_resume, NULL) - SET_SYSTEM_SLEEP_PM_OPS(ti_pipe3_suspend, ti_pipe3_resume) -}; - static const struct of_device_id ti_pipe3_id_table[] = { { .compatible = "ti,phy-usb3", @@ -592,7 +552,6 @@ static struct platform_driver ti_pipe3_driver = { .remove = ti_pipe3_remove, .driver = { .name = "ti-pipe3", - .pm = &ti_pipe3_pm_ops, .of_match_table = ti_pipe3_id_table, }, }; diff --git a/drivers/phy/phy-tusb1210.c b/drivers/phy/phy-tusb1210.c index 07efdd318bdc..4f6d5e71507d 100644 --- a/drivers/phy/phy-tusb1210.c +++ b/drivers/phy/phy-tusb1210.c @@ -53,7 +53,7 @@ static int tusb1210_power_off(struct phy *phy) return 0; } -static struct phy_ops phy_ops = { +static const struct phy_ops phy_ops = { .power_on = tusb1210_power_on, .power_off = tusb1210_power_off, .owner = THIS_MODULE, @@ -61,32 +61,26 @@ static struct phy_ops phy_ops = { static int tusb1210_probe(struct ulpi *ulpi) { - struct gpio_desc *gpio; struct tusb1210 *tusb; u8 val, reg; - int ret; tusb = devm_kzalloc(&ulpi->dev, sizeof(*tusb), GFP_KERNEL); if (!tusb) return -ENOMEM; - gpio = devm_gpiod_get(&ulpi->dev, "reset"); - if (!IS_ERR(gpio)) { - ret = gpiod_direction_output(gpio, 0); - if (ret) - return ret; - gpiod_set_value_cansleep(gpio, 1); - tusb->gpio_reset = gpio; - } + tusb->gpio_reset = devm_gpiod_get_optional(&ulpi->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(tusb->gpio_reset)) + return PTR_ERR(tusb->gpio_reset); - gpio = devm_gpiod_get(&ulpi->dev, "cs"); - if (!IS_ERR(gpio)) { - ret = gpiod_direction_output(gpio, 0); - if (ret) - return ret; - gpiod_set_value_cansleep(gpio, 1); - tusb->gpio_cs = gpio; - } + gpiod_set_value_cansleep(tusb->gpio_reset, 1); + + tusb->gpio_cs = devm_gpiod_get_optional(&ulpi->dev, "cs", + GPIOD_OUT_LOW); + if (IS_ERR(tusb->gpio_cs)) + return PTR_ERR(tusb->gpio_cs); + + gpiod_set_value_cansleep(tusb->gpio_cs, 1); /* * VENDOR_SPECIFIC2 register in TUSB1210 can be used for configuring eye diff --git a/drivers/phy/ulpi_phy.h b/drivers/phy/ulpi_phy.h index ac49fb6285ee..f2ebe490a4bc 100644 --- a/drivers/phy/ulpi_phy.h +++ b/drivers/phy/ulpi_phy.h @@ -5,7 +5,7 @@ * and it's controller, which is always the parent. */ static inline struct phy -*ulpi_phy_create(struct ulpi *ulpi, struct phy_ops *ops) +*ulpi_phy_create(struct ulpi *ulpi, const struct phy_ops *ops) { struct phy *phy; int ret; |