--- zzzz-none-000/linux-3.10.107/drivers/usb/phy/phy-ab8500-usb.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/usb/phy/phy-ab8500-usb.c 2021-02-04 17:41:59.000000000 +0000 @@ -1,10 +1,10 @@ /* - * drivers/usb/otg/ab8500_usb.c + * USB transceiver driver for AB8500 family chips * - * USB transceiver driver for AB8500 chip - * - * Copyright (C) 2010 ST-Ericsson AB + * Copyright (C) 2010-2013 ST-Ericsson AB * Mian Yousaf Kaukab + * Avinash Kumar + * Thirupathi Chippakurthy * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,6 +29,8 @@ #include #include #include +#include +#include #include #include #include @@ -41,21 +43,34 @@ /* Bank AB8500_USB */ #define AB8500_USB_LINE_STAT_REG 0x80 #define AB8505_USB_LINE_STAT_REG 0x94 +#define AB8540_USB_LINK_STAT_REG 0x94 +#define AB9540_USB_LINK_STAT_REG 0x94 +#define AB8540_USB_OTG_CTL_REG 0x87 #define AB8500_USB_PHY_CTRL_REG 0x8A +#define AB8540_VBUS_CTRL_REG 0x82 /* Bank AB8500_DEVELOPMENT */ #define AB8500_BANK12_ACCESS 0x00 /* Bank AB8500_DEBUG */ +#define AB8540_DEBUG 0x32 #define AB8500_USB_PHY_TUNE1 0x05 #define AB8500_USB_PHY_TUNE2 0x06 #define AB8500_USB_PHY_TUNE3 0x07 +/* Bank AB8500_INTERRUPT */ +#define AB8500_IT_SOURCE2_REG 0x01 + #define AB8500_BIT_OTG_STAT_ID (1 << 0) #define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0) #define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1) #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) #define AB8500_BIT_WD_CTRL_KICK (1 << 1) +#define AB8500_BIT_SOURCE2_VBUSDET (1 << 7) +#define AB8540_BIT_OTG_CTL_VBUS_VALID_ENA (1 << 0) +#define AB8540_BIT_OTG_CTL_ID_HOST_ENA (1 << 1) +#define AB8540_BIT_OTG_CTL_ID_DEV_ENA (1 << 5) +#define AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA (1 << 0) #define AB8500_WD_KICK_DELAY_US 100 /* usec */ #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ @@ -112,6 +127,68 @@ USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8505, }; +enum ab8540_usb_link_status { + USB_LINK_NOT_CONFIGURED_8540 = 0, + USB_LINK_STD_HOST_NC_8540, + USB_LINK_STD_HOST_C_NS_8540, + USB_LINK_STD_HOST_C_S_8540, + USB_LINK_CDP_8540, + USB_LINK_RESERVED0_8540, + USB_LINK_RESERVED1_8540, + USB_LINK_DEDICATED_CHG_8540, + USB_LINK_ACA_RID_A_8540, + USB_LINK_ACA_RID_B_8540, + USB_LINK_ACA_RID_C_NM_8540, + USB_LINK_RESERVED2_8540, + USB_LINK_RESERVED3_8540, + USB_LINK_HM_IDGND_8540, + USB_LINK_CHARGERPORT_NOT_OK_8540, + USB_LINK_CHARGER_DM_HIGH_8540, + USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540, + USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540, + USB_LINK_STD_UPSTREAM_8540, + USB_LINK_CHARGER_SE1_8540, + USB_LINK_CARKIT_CHGR_1_8540, + USB_LINK_CARKIT_CHGR_2_8540, + USB_LINK_ACA_DOCK_CHGR_8540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8540, + USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8540, + USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8540, + USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8540 +}; + +enum ab9540_usb_link_status { + USB_LINK_NOT_CONFIGURED_9540 = 0, + USB_LINK_STD_HOST_NC_9540, + USB_LINK_STD_HOST_C_NS_9540, + USB_LINK_STD_HOST_C_S_9540, + USB_LINK_CDP_9540, + USB_LINK_RESERVED0_9540, + USB_LINK_RESERVED1_9540, + USB_LINK_DEDICATED_CHG_9540, + USB_LINK_ACA_RID_A_9540, + USB_LINK_ACA_RID_B_9540, + USB_LINK_ACA_RID_C_NM_9540, + USB_LINK_RESERVED2_9540, + USB_LINK_RESERVED3_9540, + USB_LINK_HM_IDGND_9540, + USB_LINK_CHARGERPORT_NOT_OK_9540, + USB_LINK_CHARGER_DM_HIGH_9540, + USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540, + USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540, + USB_LINK_STD_UPSTREAM_9540, + USB_LINK_CHARGER_SE1_9540, + USB_LINK_CARKIT_CHGR_1_9540, + USB_LINK_CARKIT_CHGR_2_9540, + USB_LINK_ACA_DOCK_CHGR_9540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_9540, + USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_9540, + USB_LINK_SAMSUNG_UART_CBL_PHY_EN_9540, + USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_9540, + USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_9540 +}; + enum ab8500_usb_mode { USB_IDLE = 0, USB_PERIPHERAL, @@ -119,13 +196,30 @@ USB_DEDICATED_CHG }; +/* Register USB_LINK_STATUS interrupt */ +#define AB8500_USB_FLAG_USE_LINK_STATUS_IRQ (1 << 0) +/* Register ID_WAKEUP_F interrupt */ +#define AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ (1 << 1) +/* Register VBUS_DET_F interrupt */ +#define AB8500_USB_FLAG_USE_VBUS_DET_IRQ (1 << 2) +/* Driver is using the ab-iddet driver*/ +#define AB8500_USB_FLAG_USE_AB_IDDET (1 << 3) +/* Enable setting regulators voltage */ +#define AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE (1 << 4) +/* Enable the check_vbus_status workaround */ +#define AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS (1 << 5) +/* Enable the vbus host workaround */ +#define AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK (1 << 6) + struct ab8500_usb { struct usb_phy phy; struct device *dev; struct ab8500 *ab8500; unsigned vbus_draw; struct work_struct phy_dis_work; + struct work_struct vbus_event_work; enum ab8500_usb_mode mode; + struct clk *sysclk; struct regulator *v_ape; struct regulator *v_musb; struct regulator *v_ulpi; @@ -133,6 +227,8 @@ int previous_link_status_state; struct pinctrl *pinctrl; struct pinctrl_state *pins_sleep; + bool enabled_charging_detection; + unsigned int flags; }; static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x) @@ -171,7 +267,7 @@ if (ret) dev_err(ab->dev, "Failed to enable v-ape\n"); - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { + if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { ab->saved_v_ulpi = regulator_get_voltage(ab->v_ulpi); if (ab->saved_v_ulpi < 0) dev_err(ab->dev, "Failed to get v_ulpi voltage\n"); @@ -181,7 +277,7 @@ dev_err(ab->dev, "Failed to set the Vintcore to 1.3V, ret=%d\n", ret); - ret = regulator_set_optimum_mode(ab->v_ulpi, 28000); + ret = regulator_set_load(ab->v_ulpi, 28000); if (ret < 0) dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n", ret); @@ -191,7 +287,7 @@ if (ret) dev_err(ab->dev, "Failed to enable vddulpivio18\n"); - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { + if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { volt = regulator_get_voltage(ab->v_ulpi); if ((volt != 1300000) && (volt != 1350000)) dev_err(ab->dev, "Vintcore is not set to 1.3V volt=%d\n", @@ -212,7 +308,7 @@ regulator_disable(ab->v_ulpi); /* USB is not the only consumer of Vintcore, restore old settings */ - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { + if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { if (ab->saved_v_ulpi > 0) { ret = regulator_set_voltage(ab->v_ulpi, ab->saved_v_ulpi, ab->saved_v_ulpi); @@ -221,7 +317,7 @@ ab->saved_v_ulpi, ret); } - ret = regulator_set_optimum_mode(ab->v_ulpi, 0); + ret = regulator_set_load(ab->v_ulpi, 0); if (ret < 0) dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n", ret); @@ -252,11 +348,23 @@ if (IS_ERR(ab->pinctrl)) dev_err(ab->dev, "could not get/set default pinstate\n"); + if (clk_prepare_enable(ab->sysclk)) + dev_err(ab->dev, "can't prepare/enable clock\n"); + ab8500_usb_regulator_enable(ab); abx500_mask_and_set_register_interruptible(ab->dev, AB8500_USB, AB8500_USB_PHY_CTRL_REG, bit, bit); + + if (ab->flags & AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK) { + if (sel_host) + abx500_set_register_interruptible(ab->dev, + AB8500_USB, AB8540_USB_OTG_CTL_REG, + AB8540_BIT_OTG_CTL_VBUS_VALID_ENA | + AB8540_BIT_OTG_CTL_ID_HOST_ENA | + AB8540_BIT_OTG_CTL_ID_DEV_ENA); + } } static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) @@ -274,6 +382,8 @@ /* Needed to disable the phy.*/ ab8500_usb_wd_workaround(ab); + clk_disable_unprepare(ab->sysclk); + ab8500_usb_regulator_disable(ab); if (!IS_ERR(ab->pinctrl)) { @@ -286,7 +396,8 @@ else if (pinctrl_select_state(ab->pinctrl, ab->pins_sleep)) dev_err(ab->dev, "could not set pins to sleep state\n"); - /* as USB pins are shared with idddet, release them to allow + /* + * as USB pins are shared with iddet, release them to allow * iddet to request them */ pinctrl_put(ab->pinctrl); @@ -298,6 +409,263 @@ #define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false) #define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false) +static int ab9540_usb_link_status_update(struct ab8500_usb *ab, + enum ab9540_usb_link_status lsts) +{ + enum ux500_musb_vbus_id_status event = 0; + + dev_dbg(ab->dev, "ab9540_usb_link_status_update %d\n", lsts); + + if (ab->previous_link_status_state == USB_LINK_HM_IDGND_9540 && + (lsts == USB_LINK_STD_HOST_C_NS_9540 || + lsts == USB_LINK_STD_HOST_NC_9540)) + return 0; + + if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_9540 && + (lsts == USB_LINK_STD_HOST_NC_9540)) + return 0; + + ab->previous_link_status_state = lsts; + + switch (lsts) { + case USB_LINK_ACA_RID_B_9540: + event = UX500_MUSB_RIDB; + case USB_LINK_NOT_CONFIGURED_9540: + case USB_LINK_RESERVED0_9540: + case USB_LINK_RESERVED1_9540: + case USB_LINK_RESERVED2_9540: + case USB_LINK_RESERVED3_9540: + if (ab->mode == USB_PERIPHERAL) + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_CLEAN, &ab->vbus_draw); + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + if (event != UX500_MUSB_RIDB) + event = UX500_MUSB_NONE; + /* Fallback to default B_IDLE as nothing is connected. */ + ab->phy.otg->state = OTG_STATE_B_IDLE; + usb_phy_set_event(&ab->phy, USB_EVENT_NONE); + break; + + case USB_LINK_ACA_RID_C_NM_9540: + event = UX500_MUSB_RIDC; + case USB_LINK_STD_HOST_NC_9540: + case USB_LINK_STD_HOST_C_NS_9540: + case USB_LINK_STD_HOST_C_S_9540: + case USB_LINK_CDP_9540: + if (ab->mode == USB_HOST) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_host_phy_dis(ab); + ab8500_usb_peri_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); + } + if (ab->mode == USB_IDLE) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_peri_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); + } + if (event != UX500_MUSB_RIDC) + event = UX500_MUSB_VBUS; + break; + + case USB_LINK_ACA_RID_A_9540: + event = UX500_MUSB_RIDA; + case USB_LINK_HM_IDGND_9540: + case USB_LINK_STD_UPSTREAM_9540: + if (ab->mode == USB_PERIPHERAL) { + ab->mode = USB_HOST; + ab8500_usb_peri_phy_dis(ab); + ab8500_usb_host_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + if (ab->mode == USB_IDLE) { + ab->mode = USB_HOST; + ab8500_usb_host_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + ab->phy.otg->default_a = true; + if (event != UX500_MUSB_RIDA) + event = UX500_MUSB_ID; + + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + break; + + case USB_LINK_DEDICATED_CHG_9540: + ab->mode = USB_DEDICATED_CHG; + event = UX500_MUSB_CHARGER; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); + break; + + case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540: + case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540: + if (!(is_ab9540_2p0_or_earlier(ab->ab8500))) { + event = UX500_MUSB_NONE; + if (ab->mode == USB_HOST) { + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_host_phy_dis(ab); + ab->mode = USB_IDLE; + } + if (ab->mode == USB_PERIPHERAL) { + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_peri_phy_dis(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_CLEAN, + &ab->vbus_draw); + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + usb_phy_set_event(&ab->phy, USB_EVENT_NONE); + } + } + break; + + default: + break; + } + + return 0; +} + +static int ab8540_usb_link_status_update(struct ab8500_usb *ab, + enum ab8540_usb_link_status lsts) +{ + enum ux500_musb_vbus_id_status event = 0; + + dev_dbg(ab->dev, "ab8540_usb_link_status_update %d\n", lsts); + + if (ab->enabled_charging_detection) { + /* Disable USB Charger detection */ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8540_VBUS_CTRL_REG, + AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, 0x00); + ab->enabled_charging_detection = false; + } + + /* + * Spurious link_status interrupts are seen in case of a + * disconnection of a device in IDGND and RIDA stage + */ + if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8540 && + (lsts == USB_LINK_STD_HOST_C_NS_8540 || + lsts == USB_LINK_STD_HOST_NC_8540)) + return 0; + + if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8540 && + (lsts == USB_LINK_STD_HOST_NC_8540)) + return 0; + + ab->previous_link_status_state = lsts; + + switch (lsts) { + case USB_LINK_ACA_RID_B_8540: + event = UX500_MUSB_RIDB; + case USB_LINK_NOT_CONFIGURED_8540: + case USB_LINK_RESERVED0_8540: + case USB_LINK_RESERVED1_8540: + case USB_LINK_RESERVED2_8540: + case USB_LINK_RESERVED3_8540: + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + if (event != UX500_MUSB_RIDB) + event = UX500_MUSB_NONE; + /* + * Fallback to default B_IDLE as nothing + * is connected + */ + ab->phy.otg->state = OTG_STATE_B_IDLE; + usb_phy_set_event(&ab->phy, USB_EVENT_NONE); + break; + + case USB_LINK_ACA_RID_C_NM_8540: + event = UX500_MUSB_RIDC; + case USB_LINK_STD_HOST_NC_8540: + case USB_LINK_STD_HOST_C_NS_8540: + case USB_LINK_STD_HOST_C_S_8540: + case USB_LINK_CDP_8540: + if (ab->mode == USB_IDLE) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_peri_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); + } + if (event != UX500_MUSB_RIDC) + event = UX500_MUSB_VBUS; + break; + + case USB_LINK_ACA_RID_A_8540: + case USB_LINK_ACA_DOCK_CHGR_8540: + event = UX500_MUSB_RIDA; + case USB_LINK_HM_IDGND_8540: + case USB_LINK_STD_UPSTREAM_8540: + if (ab->mode == USB_IDLE) { + ab->mode = USB_HOST; + ab8500_usb_host_phy_en(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_PREPARE, &ab->vbus_draw); + } + ab->phy.otg->default_a = true; + if (event != UX500_MUSB_RIDA) + event = UX500_MUSB_ID; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + break; + + case USB_LINK_DEDICATED_CHG_8540: + ab->mode = USB_DEDICATED_CHG; + event = UX500_MUSB_CHARGER; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); + break; + + case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540: + case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540: + event = UX500_MUSB_NONE; + if (ab->mode == USB_HOST) { + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_host_phy_dis(ab); + ab->mode = USB_IDLE; + } + if (ab->mode == USB_PERIPHERAL) { + atomic_notifier_call_chain(&ab->phy.notifier, + event, &ab->vbus_draw); + ab8500_usb_peri_phy_dis(ab); + atomic_notifier_call_chain(&ab->phy.notifier, + UX500_MUSB_CLEAN, &ab->vbus_draw); + ab->mode = USB_IDLE; + ab->phy.otg->default_a = false; + ab->vbus_draw = 0; + usb_phy_set_event(&ab->phy, USB_EVENT_NONE); + } + break; + + default: + event = UX500_MUSB_NONE; + break; + } + + return 0; +} + static int ab8505_usb_link_status_update(struct ab8500_usb *ab, enum ab8505_usb_link_status lsts) { @@ -332,7 +700,8 @@ * Fallback to default B_IDLE as nothing * is connected */ - ab->phy.state = OTG_STATE_B_IDLE; + ab->phy.otg->state = OTG_STATE_B_IDLE; + usb_phy_set_event(&ab->phy, USB_EVENT_NONE); break; case USB_LINK_ACA_RID_C_NM_8505: @@ -346,6 +715,7 @@ ab8500_usb_peri_phy_en(ab); atomic_notifier_call_chain(&ab->phy.notifier, UX500_MUSB_PREPARE, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); } if (event != UX500_MUSB_RIDC) event = UX500_MUSB_VBUS; @@ -373,6 +743,7 @@ event = UX500_MUSB_CHARGER; atomic_notifier_call_chain(&ab->phy.notifier, event, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); break; default: @@ -415,7 +786,8 @@ if (event != UX500_MUSB_RIDB) event = UX500_MUSB_NONE; /* Fallback to default B_IDLE as nothing is connected */ - ab->phy.state = OTG_STATE_B_IDLE; + ab->phy.otg->state = OTG_STATE_B_IDLE; + usb_phy_set_event(&ab->phy, USB_EVENT_NONE); break; case USB_LINK_ACA_RID_C_NM_8500: @@ -433,6 +805,7 @@ ab8500_usb_peri_phy_en(ab); atomic_notifier_call_chain(&ab->phy.notifier, UX500_MUSB_PREPARE, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED); } if (event != UX500_MUSB_RIDC) event = UX500_MUSB_VBUS; @@ -459,6 +832,7 @@ event = UX500_MUSB_CHARGER; atomic_notifier_call_chain(&ab->phy.notifier, event, &ab->vbus_draw); + usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER); break; case USB_LINK_RESERVED_8500: @@ -498,6 +872,20 @@ AB8500_USB, AB8505_USB_LINE_STAT_REG, ®); lsts = (reg >> 3) & 0x1F; ret = ab8505_usb_link_status_update(ab, lsts); + } else if (is_ab8540(ab->ab8500)) { + enum ab8540_usb_link_status lsts; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, AB8540_USB_LINK_STAT_REG, ®); + lsts = (reg >> 3) & 0xFF; + ret = ab8540_usb_link_status_update(ab, lsts); + } else if (is_ab9540(ab->ab8500)) { + enum ab9540_usb_link_status lsts; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, AB9540_USB_LINK_STAT_REG, ®); + lsts = (reg >> 3) & 0xFF; + ret = ab9540_usb_link_status_update(ab, lsts); } return ret; @@ -505,7 +893,7 @@ /* * Disconnection Sequence: - * 1. Disconect Interrupt + * 1. Disconnect Interrupt * 2. Disable regulators * 3. Disable AB clock * 4. Disable the Phy @@ -553,7 +941,7 @@ static irqreturn_t ab8500_usb_link_status_irq(int irq, void *data) { - struct ab8500_usb *ab = (struct ab8500_usb *) data; + struct ab8500_usb *ab = (struct ab8500_usb *)data; abx500_usb_link_status_update(ab); @@ -572,6 +960,69 @@ ab8500_usb_peri_phy_dis(ab); } +/* Check if VBUS is set and linkstatus has not detected a cable. */ +static bool ab8500_usb_check_vbus_status(struct ab8500_usb *ab) +{ + u8 isource2; + u8 reg; + enum ab8540_usb_link_status lsts; + + abx500_get_register_interruptible(ab->dev, + AB8500_INTERRUPT, AB8500_IT_SOURCE2_REG, + &isource2); + + /* If Vbus is below 3.6V abort */ + if (!(isource2 & AB8500_BIT_SOURCE2_VBUSDET)) + return false; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, AB8540_USB_LINK_STAT_REG, + ®); + + lsts = (reg >> 3) & 0xFF; + + /* Check if linkstatus has detected a cable */ + if (lsts) + return false; + + return true; +} + +/* re-trigger charger detection again with watchdog re-kick. */ +static void ab8500_usb_vbus_turn_on_event_work(struct work_struct *work) +{ + struct ab8500_usb *ab = container_of(work, struct ab8500_usb, + vbus_event_work); + + if (ab->mode != USB_IDLE) + return; + + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, + AB8500_BIT_WD_CTRL_ENABLE); + + udelay(100); + + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, + AB8500_BIT_WD_CTRL_ENABLE | AB8500_BIT_WD_CTRL_KICK); + + udelay(100); + + /* Disable Main watchdog */ + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, + 0x0); + + /* Enable USB Charger detection */ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8540_VBUS_CTRL_REG, + AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, + AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA); + + ab->enabled_charging_detection = true; +} + static unsigned ab8500_eyediagram_workaroud(struct ab8500_usb *ab, unsigned mA) { /* @@ -618,7 +1069,7 @@ if (!otg) return -ENODEV; - ab = phy_to_ab(otg->phy); + ab = phy_to_ab(otg->usb_phy); ab->phy.otg->gadget = gadget; @@ -627,7 +1078,7 @@ * is fixed. */ - if ((ab->mode != USB_IDLE) && (!gadget)) { + if ((ab->mode != USB_IDLE) && !gadget) { ab->mode = USB_IDLE; schedule_work(&ab->phy_dis_work); } @@ -642,7 +1093,7 @@ if (!otg) return -ENODEV; - ab = phy_to_ab(otg->phy); + ab = phy_to_ab(otg->usb_phy); ab->phy.otg->host = host; @@ -651,7 +1102,7 @@ * is fixed. */ - if ((ab->mode != USB_IDLE) && (!host)) { + if ((ab->mode != USB_IDLE) && !host) { ab->mode = USB_IDLE; schedule_work(&ab->phy_dis_work); } @@ -659,6 +1110,33 @@ return 0; } +static void ab8500_usb_restart_phy(struct ab8500_usb *ab) +{ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + AB8500_BIT_PHY_CTRL_DEVICE_EN); + + udelay(100); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + 0); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_HOST_EN, + AB8500_BIT_PHY_CTRL_HOST_EN); + + udelay(100); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_HOST_EN, + 0); +} + static int ab8500_usb_regulator_get(struct ab8500_usb *ab) { int err; @@ -693,48 +1171,197 @@ int err; int irq; - irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS"); - if (irq < 0) { - dev_err(&pdev->dev, "Link status irq not found\n"); - return irq; - } - err = devm_request_threaded_irq(&pdev->dev, irq, NULL, - ab8500_usb_link_status_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, "usb-link-status", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for link status irq\n"); - return err; + if (ab->flags & AB8500_USB_FLAG_USE_LINK_STATUS_IRQ) { + irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS"); + if (irq < 0) { + dev_err(&pdev->dev, "Link status irq not found\n"); + return irq; + } + err = devm_request_threaded_irq(&pdev->dev, irq, NULL, + ab8500_usb_link_status_irq, + IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT, + "usb-link-status", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for link status irq\n"); + return err; + } } - irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); - if (irq < 0) { - dev_err(&pdev->dev, "ID fall irq not found\n"); - return irq; - } - err = devm_request_threaded_irq(&pdev->dev, irq, NULL, - ab8500_usb_disconnect_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, "usb-id-fall", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for ID fall irq\n"); - return err; + if (ab->flags & AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ) { + irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); + if (irq < 0) { + dev_err(&pdev->dev, "ID fall irq not found\n"); + return irq; + } + err = devm_request_threaded_irq(&pdev->dev, irq, NULL, + ab8500_usb_disconnect_irq, + IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT, + "usb-id-fall", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for ID fall irq\n"); + return err; + } } - irq = platform_get_irq_byname(pdev, "VBUS_DET_F"); - if (irq < 0) { - dev_err(&pdev->dev, "VBUS fall irq not found\n"); - return irq; - } - err = devm_request_threaded_irq(&pdev->dev, irq, NULL, - ab8500_usb_disconnect_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, "usb-vbus-fall", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); - return err; + if (ab->flags & AB8500_USB_FLAG_USE_VBUS_DET_IRQ) { + irq = platform_get_irq_byname(pdev, "VBUS_DET_F"); + if (irq < 0) { + dev_err(&pdev->dev, "VBUS fall irq not found\n"); + return irq; + } + err = devm_request_threaded_irq(&pdev->dev, irq, NULL, + ab8500_usb_disconnect_irq, + IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT, + "usb-vbus-fall", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); + return err; + } } return 0; } +static void ab8500_usb_set_ab8500_tuning_values(struct ab8500_usb *ab) +{ + int err; + + /* Enable the PBT/Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); + if (err < 0) + dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + err); + + /* Switch to normal mode/disable Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", + err); +} + +static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab) +{ + int err; + + /* Enable the PBT/Bank 0x12 access */ + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, + 0x01, 0x01); + if (err < 0) + dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", + err); + + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE1, + 0xC8, 0xC8); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", + err); + + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE2, + 0x60, 0x60); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", + err); + + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE3, + 0xFC, 0x80); + + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + err); + + /* Switch to normal mode/disable Bank 0x12 access */ + err = abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, + 0x00, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", + err); +} + +static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) +{ + int err; + + err = abx500_set_register_interruptible(ab->dev, + AB8540_DEBUG, AB8500_USB_PHY_TUNE1, 0xCC); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register ret=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8540_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register ret=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester ret=%d\n", + err); +} + +static void ab8500_usb_set_ab9540_tuning_values(struct ab8500_usb *ab) +{ + int err; + + /* Enable the PBT/Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); + if (err < 0) + dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", + err); + + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80); + if (err < 0) + dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + err); + + /* Switch to normal mode/disable Bank 0x12 access */ + err = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); + if (err < 0) + dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", + err); +} + static int ab8500_usb_probe(struct platform_device *pdev) { struct ab8500_usb *ab; @@ -766,23 +1393,56 @@ ab->phy.label = "ab8500"; ab->phy.set_suspend = ab8500_usb_set_suspend; ab->phy.set_power = ab8500_usb_set_power; - ab->phy.state = OTG_STATE_UNDEFINED; + ab->phy.otg->state = OTG_STATE_UNDEFINED; - otg->phy = &ab->phy; + otg->usb_phy = &ab->phy; otg->set_host = ab8500_usb_set_host; otg->set_peripheral = ab8500_usb_set_peripheral; - platform_set_drvdata(pdev, ab); + if (is_ab8500(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | + AB8500_USB_FLAG_USE_VBUS_DET_IRQ | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + } else if (is_ab8505(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | + AB8500_USB_FLAG_USE_VBUS_DET_IRQ | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + } else if (is_ab8540(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS | + AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + } else if (is_ab9540(ab->ab8500)) { + ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | + AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + if (is_ab9540_2p0_or_earlier(ab->ab8500)) + ab->flags |= AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | + AB8500_USB_FLAG_USE_VBUS_DET_IRQ; + } - ATOMIC_INIT_NOTIFIER_HEAD(&ab->phy.notifier); + /* Disable regulator voltage setting for AB8500 <= v2.0 */ + if (is_ab8500_2p0_or_earlier(ab->ab8500)) + ab->flags &= ~AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; + + platform_set_drvdata(pdev, ab); /* all: Disable phy when called from set_host and set_peripheral */ INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); + INIT_WORK(&ab->vbus_event_work, ab8500_usb_vbus_turn_on_event_work); + err = ab8500_usb_regulator_get(ab); if (err) return err; + ab->sysclk = devm_clk_get(ab->dev, "sysclk"); + if (IS_ERR(ab->sysclk)) { + dev_err(ab->dev, "Could not get sysclk.\n"); + return PTR_ERR(ab->sysclk); + } + err = ab8500_usb_irq_setup(pdev, ab); if (err < 0) return err; @@ -793,85 +1453,33 @@ return err; } - /* Phy tuning values for AB8500 */ - if (!is_ab8500_2p0_or_earlier(ab->ab8500)) { - /* Enable the PBT/Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); - if (err < 0) - dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", - err); - - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", - err); - - /* Switch to normal mode/disable Bank 0x12 access */ - err = abx500_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", - err); - } - - /* Phy tuning values for AB8505 */ - if (is_ab8505(ab->ab8500)) { - /* Enable the PBT/Bank 0x12 access */ - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, - 0x01, 0x01); - if (err < 0) - dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", - err); - - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE1, - 0xC8, 0xC8); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", - err); - - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE2, - 0x60, 0x60); - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", - err); - - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEBUG, AB8500_USB_PHY_TUNE3, - 0xFC, 0x80); - - if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", - err); - - /* Switch to normal mode/disable Bank 0x12 access */ - err = abx500_mask_and_set_register_interruptible(ab->dev, - AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, - 0x00, 0x00); - if (err < 0) - dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", - err); - } + if (is_ab8500(ab->ab8500) && !is_ab8500_2p0_or_earlier(ab->ab8500)) + /* Phy tuning values for AB8500 > v2.0 */ + ab8500_usb_set_ab8500_tuning_values(ab); + else if (is_ab8505(ab->ab8500)) + /* Phy tuning values for AB8505 */ + ab8500_usb_set_ab8505_tuning_values(ab); + else if (is_ab8540(ab->ab8500)) + /* Phy tuning values for AB8540 */ + ab8500_usb_set_ab8540_tuning_values(ab); + else if (is_ab9540(ab->ab8500)) + /* Phy tuning values for AB9540 */ + ab8500_usb_set_ab9540_tuning_values(ab); /* Needed to enable ID detection. */ ab8500_usb_wd_workaround(ab); + /* + * This is required for usb-link-status to work properly when a + * cable is connected at boot time. + */ + ab8500_usb_restart_phy(ab); + + if (ab->flags & AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS) { + if (ab8500_usb_check_vbus_status(ab)) + schedule_work(&ab->vbus_event_work); + } + abx500_usb_link_status_update(ab); dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev); @@ -884,6 +1492,7 @@ struct ab8500_usb *ab = platform_get_drvdata(pdev); cancel_work_sync(&ab->phy_dis_work); + cancel_work_sync(&ab->vbus_event_work); usb_remove_phy(&ab->phy); @@ -895,12 +1504,20 @@ return 0; } +static const struct platform_device_id ab8500_usb_devtype[] = { + { .name = "ab8500-usb", }, + { .name = "ab8540-usb", }, + { .name = "ab9540-usb", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype); + static struct platform_driver ab8500_usb_driver = { .probe = ab8500_usb_probe, .remove = ab8500_usb_remove, + .id_table = ab8500_usb_devtype, .driver = { - .name = "ab8500-usb", - .owner = THIS_MODULE, + .name = "abx5x0-usb", }, }; @@ -916,7 +1533,6 @@ } module_exit(ab8500_usb_exit); -MODULE_ALIAS("platform:ab8500_usb"); MODULE_AUTHOR("ST-Ericsson AB"); -MODULE_DESCRIPTION("AB8500 usb transceiver driver"); +MODULE_DESCRIPTION("AB8500 family usb transceiver driver"); MODULE_LICENSE("GPL");