From: Fabio Baltieri Date: Wed, 15 May 2013 12:03:33 +0000 (+0200) Subject: usb: phy: ab8500-usb: add ab9540 support X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=f85bff5d1ece92017a57129877573e0fa4b1050c;p=openwrt%2Fstaging%2Fblogic.git usb: phy: ab8500-usb: add ab9540 support Add support for the ab9540 variant of the ab8500 family. Acked-by: Linus Walleij Acked-by: Maxime Coquelin Cc: Avinash Kumar Cc: Thirupathi Chippakurthy Signed-off-by: Fabio Baltieri Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index ceab508b90e8..087402350b6d 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -6,6 +6,7 @@ * 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 @@ -45,6 +46,7 @@ #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 @@ -158,6 +160,37 @@ enum ab8540_usb_link_status { 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, @@ -378,6 +411,132 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) #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.state = OTG_STATE_B_IDLE; + 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); + } + 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); + } + 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); + 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; + } + } + break; + + default: + break; + } + + return 0; +} + static int ab8540_usb_link_status_update(struct ab8500_usb *ab, enum ab8540_usb_link_status lsts) { @@ -707,6 +866,13 @@ static int abx500_usb_link_status_update(struct ab8500_usb *ab) 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; @@ -1146,6 +1312,43 @@ static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) 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; @@ -1198,6 +1401,12 @@ static int ab8500_usb_probe(struct platform_device *pdev) 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; } /* Disable regulator voltage setting for AB8500 <= v2.0 */ @@ -1242,6 +1451,9 @@ static int ab8500_usb_probe(struct platform_device *pdev) 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); @@ -1284,6 +1496,7 @@ static int ab8500_usb_remove(struct platform_device *pdev) static struct platform_device_id ab8500_usb_devtype[] = { { .name = "ab8500-usb", }, { .name = "ab8540-usb", }, + { .name = "ab9540-usb", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype);