From 50018a752771efce3ae222457d4d231d1f80a1a5 Mon Sep 17 00:00:00 2001 From: Zoltan Herpai Date: Sun, 9 Aug 2015 12:25:18 +0000 Subject: sunxi: add support for 4.1 Signed-off-by: Zoltan HERPAI SVN-Revision: 46571 --- .../sunxi/patches-4.1/170-musb-add-driver.patch | 820 +++++++++++++++++++++ 1 file changed, 820 insertions(+) create mode 100644 target/linux/sunxi/patches-4.1/170-musb-add-driver.patch (limited to 'target/linux/sunxi/patches-4.1/170-musb-add-driver.patch') diff --git a/target/linux/sunxi/patches-4.1/170-musb-add-driver.patch b/target/linux/sunxi/patches-4.1/170-musb-add-driver.patch new file mode 100644 index 0000000000..5fc9e5aa66 --- /dev/null +++ b/target/linux/sunxi/patches-4.1/170-musb-add-driver.patch @@ -0,0 +1,820 @@ +From 744543c599c420bcddca08cd2e2713b82a008328 Mon Sep 17 00:00:00 2001 +From: Hans de Goede +Date: Wed, 8 Jul 2015 16:41:38 +0200 +Subject: [PATCH] usb: musb: sunxi: Add support for the Allwinner sunxi musb + controller + +This is based on initial code to get the Allwinner sunxi musb controller +supported by Chen-Yu Tsai and Roman Byshko. + +This adds support for the Allwinner sunxi musb controller in both host only +and otg mode. Peripheral only mode is not supported, as no boards use that. + +This has been tested on a cubietruck (A20 SoC) and an UTOO P66 tablet +(A13 SoC) with a variety of devices in host mode and with the g_serial gadget +driver in peripheral mode, plugging otg / host cables in/out a lot of times +in all possible imaginable plug orders. + +Signed-off-by: Hans de Goede +Signed-off-by: Felipe Balbi +--- + .../bindings/usb/allwinner,sun4i-a10-musb.txt | 27 + + drivers/usb/musb/Kconfig | 13 +- + drivers/usb/musb/Makefile | 1 + + drivers/usb/musb/sunxi.c | 703 +++++++++++++++++++++ + 4 files changed, 743 insertions(+), 1 deletion(-) + create mode 100644 Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt + create mode 100644 drivers/usb/musb/sunxi.c + +diff --git a/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt +new file mode 100644 +index 0000000..9254a6c +--- /dev/null ++++ b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt +@@ -0,0 +1,27 @@ ++Allwinner sun4i A10 musb DRC/OTG controller ++------------------------------------------- ++ ++Required properties: ++ - compatible : "allwinner,sun4i-a10-musb" ++ - reg : mmio address range of the musb controller ++ - clocks : clock specifier for the musb controller ahb gate clock ++ - interrupts : interrupt to which the musb controller is connected ++ - interrupt-names : must be "mc" ++ - phys : phy specifier for the otg phy ++ - phy-names : must be "usb" ++ - dr_mode : Dual-Role mode must be "host" or "otg" ++ - extcon : extcon specifier for the otg phy ++ ++Example: ++ ++ usb_otg: usb@01c13000 { ++ compatible = "allwinner,sun4i-a10-musb"; ++ reg = <0x01c13000 0x0400>; ++ clocks = <&ahb_gates 0>; ++ interrupts = <38>; ++ interrupt-names = "mc"; ++ phys = <&usbphy 0>; ++ phy-names = "usb"; ++ extcon = <&usbphy 0>; ++ status = "disabled"; ++ }; +diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig +index 39db8b6..37081ed 100644 +--- a/drivers/usb/musb/Kconfig ++++ b/drivers/usb/musb/Kconfig +@@ -5,7 +5,7 @@ + + # (M)HDRC = (Multipoint) Highspeed Dual-Role Controller + config USB_MUSB_HDRC +- tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)' ++ tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, AW, ...)' + depends on (USB || USB_GADGET) + help + Say Y here if your system has a dual role high speed USB +@@ -20,6 +20,8 @@ config USB_MUSB_HDRC + Analog Devices parts using this IP include Blackfin BF54x, + BF525 and BF527. + ++ Allwinner SoCs using this IP include A10, A13, A20, ... ++ + If you do not know what this is, please say N. + + To compile this driver as a module, choose M here; the +@@ -60,6 +62,15 @@ endchoice + + comment "Platform Glue Layer" + ++config USB_MUSB_SUNXI ++ tristate "Allwinner (sunxi)" ++ depends on ARCH_SUNXI ++ depends on NOP_USB_XCEIV ++ depends on PHY_SUN4I_USB ++ depends on EXTCON ++ depends on GENERIC_PHY ++ select SUNXI_SRAM ++ + config USB_MUSB_DAVINCI + tristate "DaVinci" + depends on ARCH_DAVINCI_DMx +diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile +index ba49501..f95befe 100644 +--- a/drivers/usb/musb/Makefile ++++ b/drivers/usb/musb/Makefile +@@ -20,6 +20,7 @@ obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o + obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o + obj-$(CONFIG_USB_MUSB_UX500) += ux500.o + obj-$(CONFIG_USB_MUSB_JZ4740) += jz4740.o ++obj-$(CONFIG_USB_MUSB_SUNXI) += sunxi.o + + + obj-$(CONFIG_USB_MUSB_AM335X_CHILD) += musb_am335x.o +diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c +new file mode 100644 +index 0000000..00d7248 +--- /dev/null ++++ b/drivers/usb/musb/sunxi.c +@@ -0,0 +1,703 @@ ++/* ++ * Allwinner sun4i MUSB Glue Layer ++ * ++ * Copyright (C) 2015 Hans de Goede ++ * ++ * Based on code from ++ * Allwinner Technology Co., Ltd. ++ * ++ * 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 ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include "musb_core.h" ++ ++/* ++ * Register offsets, note sunxi musb has a different layout then most ++ * musb implementations, we translate the layout in musb_readb & friends. ++ */ ++#define SUNXI_MUSB_POWER 0x0040 ++#define SUNXI_MUSB_DEVCTL 0x0041 ++#define SUNXI_MUSB_INDEX 0x0042 ++#define SUNXI_MUSB_VEND0 0x0043 ++#define SUNXI_MUSB_INTRTX 0x0044 ++#define SUNXI_MUSB_INTRRX 0x0046 ++#define SUNXI_MUSB_INTRTXE 0x0048 ++#define SUNXI_MUSB_INTRRXE 0x004a ++#define SUNXI_MUSB_INTRUSB 0x004c ++#define SUNXI_MUSB_INTRUSBE 0x0050 ++#define SUNXI_MUSB_FRAME 0x0054 ++#define SUNXI_MUSB_TXFIFOSZ 0x0090 ++#define SUNXI_MUSB_TXFIFOADD 0x0092 ++#define SUNXI_MUSB_RXFIFOSZ 0x0094 ++#define SUNXI_MUSB_RXFIFOADD 0x0096 ++#define SUNXI_MUSB_FADDR 0x0098 ++#define SUNXI_MUSB_TXFUNCADDR 0x0098 ++#define SUNXI_MUSB_TXHUBADDR 0x009a ++#define SUNXI_MUSB_TXHUBPORT 0x009b ++#define SUNXI_MUSB_RXFUNCADDR 0x009c ++#define SUNXI_MUSB_RXHUBADDR 0x009e ++#define SUNXI_MUSB_RXHUBPORT 0x009f ++#define SUNXI_MUSB_CONFIGDATA 0x00c0 ++ ++/* VEND0 bits */ ++#define SUNXI_MUSB_VEND0_PIO_MODE 0 ++ ++/* flags */ ++#define SUNXI_MUSB_FL_ENABLED 0 ++#define SUNXI_MUSB_FL_HOSTMODE 1 ++#define SUNXI_MUSB_FL_HOSTMODE_PEND 2 ++#define SUNXI_MUSB_FL_VBUS_ON 3 ++#define SUNXI_MUSB_FL_PHY_ON 4 ++ ++/* Our read/write methods need access and do not get passed in a musb ref :| */ ++static struct musb *sunxi_musb; ++ ++struct sunxi_glue { ++ struct device *dev; ++ struct platform_device *musb; ++ struct clk *clk; ++ struct phy *phy; ++ struct platform_device *usb_phy; ++ struct usb_phy *xceiv; ++ unsigned long flags; ++ struct work_struct work; ++ struct extcon_dev *extcon; ++ struct notifier_block host_nb; ++}; ++ ++/* phy_power_on / off may sleep, so we use a workqueue */ ++static void sunxi_musb_work(struct work_struct *work) ++{ ++ struct sunxi_glue *glue = container_of(work, struct sunxi_glue, work); ++ bool vbus_on, phy_on; ++ ++ if (!test_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags)) ++ return; ++ ++ if (test_and_clear_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags)) { ++ struct musb *musb = platform_get_drvdata(glue->musb); ++ unsigned long flags; ++ u8 devctl; ++ ++ spin_lock_irqsave(&musb->lock, flags); ++ ++ devctl = readb(musb->mregs + SUNXI_MUSB_DEVCTL); ++ if (test_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags)) { ++ set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags); ++ musb->xceiv->otg->default_a = 1; ++ musb->xceiv->otg->state = OTG_STATE_A_IDLE; ++ MUSB_HST_MODE(musb); ++ devctl |= MUSB_DEVCTL_SESSION; ++ } else { ++ clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags); ++ musb->xceiv->otg->default_a = 0; ++ musb->xceiv->otg->state = OTG_STATE_B_IDLE; ++ MUSB_DEV_MODE(musb); ++ devctl &= ~MUSB_DEVCTL_SESSION; ++ } ++ writeb(devctl, musb->mregs + SUNXI_MUSB_DEVCTL); ++ ++ spin_unlock_irqrestore(&musb->lock, flags); ++ } ++ ++ vbus_on = test_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags); ++ phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags); ++ ++ if (phy_on != vbus_on) { ++ if (vbus_on) { ++ phy_power_on(glue->phy); ++ set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags); ++ } else { ++ phy_power_off(glue->phy); ++ clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags); ++ } ++ } ++} ++ ++static void sunxi_musb_set_vbus(struct musb *musb, int is_on) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ ++ if (is_on) ++ set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags); ++ else ++ clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags); ++ ++ schedule_work(&glue->work); ++} ++ ++static void sunxi_musb_pre_root_reset_end(struct musb *musb) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ ++ sun4i_usb_phy_set_squelch_detect(glue->phy, false); ++} ++ ++static void sunxi_musb_post_root_reset_end(struct musb *musb) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ ++ sun4i_usb_phy_set_squelch_detect(glue->phy, true); ++} ++ ++static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci) ++{ ++ struct musb *musb = __hci; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&musb->lock, flags); ++ ++ musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB); ++ if (musb->int_usb) ++ writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB); ++ ++ /* ++ * sunxi musb often signals babble on low / full speed device ++ * disconnect, without ever raising MUSB_INTR_DISCONNECT, since ++ * normally babble never happens treat it as disconnect. ++ */ ++ if ((musb->int_usb & MUSB_INTR_BABBLE) && is_host_active(musb)) { ++ musb->int_usb &= ~MUSB_INTR_BABBLE; ++ musb->int_usb |= MUSB_INTR_DISCONNECT; ++ } ++ ++ if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) { ++ /* ep0 FADDR must be 0 when (re)entering peripheral mode */ ++ musb_ep_select(musb->mregs, 0); ++ musb_writeb(musb->mregs, MUSB_FADDR, 0); ++ } ++ ++ musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX); ++ if (musb->int_tx) ++ writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX); ++ ++ musb->int_rx = readw(musb->mregs + SUNXI_MUSB_INTRRX); ++ if (musb->int_rx) ++ writew(musb->int_rx, musb->mregs + SUNXI_MUSB_INTRRX); ++ ++ musb_interrupt(musb); ++ ++ spin_unlock_irqrestore(&musb->lock, flags); ++ ++ return IRQ_HANDLED; ++} ++ ++static int sunxi_musb_host_notifier(struct notifier_block *nb, ++ unsigned long event, void *ptr) ++{ ++ struct sunxi_glue *glue = container_of(nb, struct sunxi_glue, host_nb); ++ ++ if (event) ++ set_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags); ++ else ++ clear_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags); ++ ++ set_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags); ++ schedule_work(&glue->work); ++ ++ return NOTIFY_DONE; ++} ++ ++static int sunxi_musb_init(struct musb *musb) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ int ret; ++ ++ sunxi_musb = musb; ++ musb->phy = glue->phy; ++ musb->xceiv = glue->xceiv; ++ ++ ret = sunxi_sram_claim(musb->controller->parent); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(glue->clk); ++ if (ret) ++ goto error_sram_release; ++ ++ writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0); ++ ++ /* Register notifier before calling phy_init() */ ++ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) { ++ ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST, ++ &glue->host_nb); ++ if (ret) ++ goto error_clk_disable; ++ } ++ ++ ret = phy_init(glue->phy); ++ if (ret) ++ goto error_unregister_notifier; ++ ++ if (musb->port_mode == MUSB_PORT_MODE_HOST) { ++ ret = phy_power_on(glue->phy); ++ if (ret) ++ goto error_phy_exit; ++ set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags); ++ /* Stop musb work from turning vbus off again */ ++ set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags); ++ } ++ ++ musb->isr = sunxi_musb_interrupt; ++ ++ /* Stop the musb-core from doing runtime pm (not supported on sunxi) */ ++ pm_runtime_get(musb->controller); ++ ++ return 0; ++ ++error_phy_exit: ++ phy_exit(glue->phy); ++error_unregister_notifier: ++ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) ++ extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST, ++ &glue->host_nb); ++error_clk_disable: ++ clk_disable_unprepare(glue->clk); ++error_sram_release: ++ sunxi_sram_release(musb->controller->parent); ++ return ret; ++} ++ ++static int sunxi_musb_exit(struct musb *musb) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ ++ pm_runtime_put(musb->controller); ++ ++ cancel_work_sync(&glue->work); ++ if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags)) ++ phy_power_off(glue->phy); ++ ++ phy_exit(glue->phy); ++ ++ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) ++ extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST, ++ &glue->host_nb); ++ ++ clk_disable_unprepare(glue->clk); ++ sunxi_sram_release(musb->controller->parent); ++ ++ return 0; ++} ++ ++static void sunxi_musb_enable(struct musb *musb) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ ++ /* musb_core does not call us in a balanced manner */ ++ if (test_and_set_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags)) ++ return; ++ ++ schedule_work(&glue->work); ++} ++ ++static void sunxi_musb_disable(struct musb *musb) ++{ ++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); ++ ++ clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags); ++} ++ ++/* ++ * sunxi musb register layout ++ * 0x00 - 0x17 fifo regs, 1 long per fifo ++ * 0x40 - 0x57 generic control regs (power - frame) ++ * 0x80 - 0x8f ep control regs (addressed through hw_ep->regs, indexed) ++ * 0x90 - 0x97 fifo control regs (indexed) ++ * 0x98 - 0x9f multipoint / busctl regs (indexed) ++ * 0xc0 configdata reg ++ */ ++ ++static u32 sunxi_musb_fifo_offset(u8 epnum) ++{ ++ return (epnum * 4); ++} ++ ++static u32 sunxi_musb_ep_offset(u8 epnum, u16 offset) ++{ ++ WARN_ONCE(offset != 0, ++ "sunxi_musb_ep_offset called with non 0 offset\n"); ++ ++ return 0x80; /* indexed, so ignore epnum */ ++} ++ ++static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset) ++{ ++ return SUNXI_MUSB_TXFUNCADDR + offset; ++} ++ ++static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset) ++{ ++ if (addr == sunxi_musb->mregs) { ++ /* generic control or fifo control reg access */ ++ switch (offset) { ++ case MUSB_FADDR: ++ return readb(addr + SUNXI_MUSB_FADDR); ++ case MUSB_POWER: ++ return readb(addr + SUNXI_MUSB_POWER); ++ case MUSB_INTRUSB: ++ return readb(addr + SUNXI_MUSB_INTRUSB); ++ case MUSB_INTRUSBE: ++ return readb(addr + SUNXI_MUSB_INTRUSBE); ++ case MUSB_INDEX: ++ return readb(addr + SUNXI_MUSB_INDEX); ++ case MUSB_TESTMODE: ++ return 0; /* No testmode on sunxi */ ++ case MUSB_DEVCTL: ++ return readb(addr + SUNXI_MUSB_DEVCTL); ++ case MUSB_TXFIFOSZ: ++ return readb(addr + SUNXI_MUSB_TXFIFOSZ); ++ case MUSB_RXFIFOSZ: ++ return readb(addr + SUNXI_MUSB_RXFIFOSZ); ++ case MUSB_CONFIGDATA + 0x10: /* See musb_read_configdata() */ ++ return readb(addr + SUNXI_MUSB_CONFIGDATA); ++ /* Offset for these is fixed by sunxi_musb_busctl_offset() */ ++ case SUNXI_MUSB_TXFUNCADDR: ++ case SUNXI_MUSB_TXHUBADDR: ++ case SUNXI_MUSB_TXHUBPORT: ++ case SUNXI_MUSB_RXFUNCADDR: ++ case SUNXI_MUSB_RXHUBADDR: ++ case SUNXI_MUSB_RXHUBPORT: ++ /* multipoint / busctl reg access */ ++ return readb(addr + offset); ++ default: ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown readb offset %u\n", offset); ++ return 0; ++ } ++ } else if (addr == (sunxi_musb->mregs + 0x80)) { ++ /* ep control reg access */ ++ /* sunxi has a 2 byte hole before the txtype register */ ++ if (offset >= MUSB_TXTYPE) ++ offset += 2; ++ return readb(addr + offset); ++ } ++ ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown readb at 0x%x bytes offset\n", ++ (int)(addr - sunxi_musb->mregs)); ++ return 0; ++} ++ ++static void sunxi_musb_writeb(void __iomem *addr, unsigned offset, u8 data) ++{ ++ if (addr == sunxi_musb->mregs) { ++ /* generic control or fifo control reg access */ ++ switch (offset) { ++ case MUSB_FADDR: ++ return writeb(data, addr + SUNXI_MUSB_FADDR); ++ case MUSB_POWER: ++ return writeb(data, addr + SUNXI_MUSB_POWER); ++ case MUSB_INTRUSB: ++ return writeb(data, addr + SUNXI_MUSB_INTRUSB); ++ case MUSB_INTRUSBE: ++ return writeb(data, addr + SUNXI_MUSB_INTRUSBE); ++ case MUSB_INDEX: ++ return writeb(data, addr + SUNXI_MUSB_INDEX); ++ case MUSB_TESTMODE: ++ if (data) ++ dev_warn(sunxi_musb->controller->parent, ++ "sunxi-musb does not have testmode\n"); ++ return; ++ case MUSB_DEVCTL: ++ return writeb(data, addr + SUNXI_MUSB_DEVCTL); ++ case MUSB_TXFIFOSZ: ++ return writeb(data, addr + SUNXI_MUSB_TXFIFOSZ); ++ case MUSB_RXFIFOSZ: ++ return writeb(data, addr + SUNXI_MUSB_RXFIFOSZ); ++ /* Offset for these is fixed by sunxi_musb_busctl_offset() */ ++ case SUNXI_MUSB_TXFUNCADDR: ++ case SUNXI_MUSB_TXHUBADDR: ++ case SUNXI_MUSB_TXHUBPORT: ++ case SUNXI_MUSB_RXFUNCADDR: ++ case SUNXI_MUSB_RXHUBADDR: ++ case SUNXI_MUSB_RXHUBPORT: ++ /* multipoint / busctl reg access */ ++ return writeb(data, addr + offset); ++ default: ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown writeb offset %u\n", offset); ++ return; ++ } ++ } else if (addr == (sunxi_musb->mregs + 0x80)) { ++ /* ep control reg access */ ++ if (offset >= MUSB_TXTYPE) ++ offset += 2; ++ return writeb(data, addr + offset); ++ } ++ ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown writeb at 0x%x bytes offset\n", ++ (int)(addr - sunxi_musb->mregs)); ++} ++ ++static u16 sunxi_musb_readw(const void __iomem *addr, unsigned offset) ++{ ++ if (addr == sunxi_musb->mregs) { ++ /* generic control or fifo control reg access */ ++ switch (offset) { ++ case MUSB_INTRTX: ++ return readw(addr + SUNXI_MUSB_INTRTX); ++ case MUSB_INTRRX: ++ return readw(addr + SUNXI_MUSB_INTRRX); ++ case MUSB_INTRTXE: ++ return readw(addr + SUNXI_MUSB_INTRTXE); ++ case MUSB_INTRRXE: ++ return readw(addr + SUNXI_MUSB_INTRRXE); ++ case MUSB_FRAME: ++ return readw(addr + SUNXI_MUSB_FRAME); ++ case MUSB_TXFIFOADD: ++ return readw(addr + SUNXI_MUSB_TXFIFOADD); ++ case MUSB_RXFIFOADD: ++ return readw(addr + SUNXI_MUSB_RXFIFOADD); ++ case MUSB_HWVERS: ++ return 0; /* sunxi musb version is not known */ ++ default: ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown readw offset %u\n", offset); ++ return 0; ++ } ++ } else if (addr == (sunxi_musb->mregs + 0x80)) { ++ /* ep control reg access */ ++ return readw(addr + offset); ++ } ++ ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown readw at 0x%x bytes offset\n", ++ (int)(addr - sunxi_musb->mregs)); ++ return 0; ++} ++ ++static void sunxi_musb_writew(void __iomem *addr, unsigned offset, u16 data) ++{ ++ if (addr == sunxi_musb->mregs) { ++ /* generic control or fifo control reg access */ ++ switch (offset) { ++ case MUSB_INTRTX: ++ return writew(data, addr + SUNXI_MUSB_INTRTX); ++ case MUSB_INTRRX: ++ return writew(data, addr + SUNXI_MUSB_INTRRX); ++ case MUSB_INTRTXE: ++ return writew(data, addr + SUNXI_MUSB_INTRTXE); ++ case MUSB_INTRRXE: ++ return writew(data, addr + SUNXI_MUSB_INTRRXE); ++ case MUSB_FRAME: ++ return writew(data, addr + SUNXI_MUSB_FRAME); ++ case MUSB_TXFIFOADD: ++ return writew(data, addr + SUNXI_MUSB_TXFIFOADD); ++ case MUSB_RXFIFOADD: ++ return writew(data, addr + SUNXI_MUSB_RXFIFOADD); ++ default: ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown writew offset %u\n", offset); ++ return; ++ } ++ } else if (addr == (sunxi_musb->mregs + 0x80)) { ++ /* ep control reg access */ ++ return writew(data, addr + offset); ++ } ++ ++ dev_err(sunxi_musb->controller->parent, ++ "Error unknown writew at 0x%x bytes offset\n", ++ (int)(addr - sunxi_musb->mregs)); ++} ++ ++static const struct musb_platform_ops sunxi_musb_ops = { ++ .quirks = MUSB_INDEXED_EP, ++ .init = sunxi_musb_init, ++ .exit = sunxi_musb_exit, ++ .enable = sunxi_musb_enable, ++ .disable = sunxi_musb_disable, ++ .fifo_offset = sunxi_musb_fifo_offset, ++ .ep_offset = sunxi_musb_ep_offset, ++ .busctl_offset = sunxi_musb_busctl_offset, ++ .readb = sunxi_musb_readb, ++ .writeb = sunxi_musb_writeb, ++ .readw = sunxi_musb_readw, ++ .writew = sunxi_musb_writew, ++ .set_vbus = sunxi_musb_set_vbus, ++ .pre_root_reset_end = sunxi_musb_pre_root_reset_end, ++ .post_root_reset_end = sunxi_musb_post_root_reset_end, ++}; ++ ++/* Allwinner OTG supports up to 5 endpoints */ ++#define SUNXI_MUSB_MAX_EP_NUM 6 ++#define SUNXI_MUSB_RAM_BITS 11 ++ ++static struct musb_fifo_cfg sunxi_musb_mode_cfg[] = { ++ MUSB_EP_FIFO_SINGLE(1, FIFO_TX, 512), ++ MUSB_EP_FIFO_SINGLE(1, FIFO_RX, 512), ++ MUSB_EP_FIFO_SINGLE(2, FIFO_TX, 512), ++ MUSB_EP_FIFO_SINGLE(2, FIFO_RX, 512), ++ MUSB_EP_FIFO_SINGLE(3, FIFO_TX, 512), ++ MUSB_EP_FIFO_SINGLE(3, FIFO_RX, 512), ++ MUSB_EP_FIFO_SINGLE(4, FIFO_TX, 512), ++ MUSB_EP_FIFO_SINGLE(4, FIFO_RX, 512), ++ MUSB_EP_FIFO_SINGLE(5, FIFO_TX, 512), ++ MUSB_EP_FIFO_SINGLE(5, FIFO_RX, 512), ++}; ++ ++static struct musb_hdrc_config sunxi_musb_hdrc_config = { ++ .fifo_cfg = sunxi_musb_mode_cfg, ++ .fifo_cfg_size = ARRAY_SIZE(sunxi_musb_mode_cfg), ++ .multipoint = true, ++ .dyn_fifo = true, ++ .soft_con = true, ++ .num_eps = SUNXI_MUSB_MAX_EP_NUM, ++ .ram_bits = SUNXI_MUSB_RAM_BITS, ++ .dma = 0, ++}; ++ ++static int sunxi_musb_probe(struct platform_device *pdev) ++{ ++ struct musb_hdrc_platform_data pdata; ++ struct platform_device_info pinfo; ++ struct sunxi_glue *glue; ++ struct device_node *np = pdev->dev.of_node; ++ int ret; ++ ++ if (!np) { ++ dev_err(&pdev->dev, "Error no device tree node found\n"); ++ return -EINVAL; ++ } ++ ++ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); ++ if (!glue) ++ return -ENOMEM; ++ ++ memset(&pdata, 0, sizeof(pdata)); ++ switch (of_usb_get_dr_mode(np)) { ++#if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST ++ case USB_DR_MODE_HOST: ++ pdata.mode = MUSB_PORT_MODE_HOST; ++ break; ++#endif ++#ifdef CONFIG_USB_MUSB_DUAL_ROLE ++ case USB_DR_MODE_OTG: ++ glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0); ++ if (IS_ERR(glue->extcon)) { ++ if (PTR_ERR(glue->extcon) == -EPROBE_DEFER) ++ return -EPROBE_DEFER; ++ dev_err(&pdev->dev, "Invalid or missing extcon\n"); ++ return PTR_ERR(glue->extcon); ++ } ++ pdata.mode = MUSB_PORT_MODE_DUAL_ROLE; ++ break; ++#endif ++ default: ++ dev_err(&pdev->dev, "Invalid or missing 'dr_mode' property\n"); ++ return -EINVAL; ++ } ++ pdata.platform_ops = &sunxi_musb_ops; ++ pdata.config = &sunxi_musb_hdrc_config; ++ ++ glue->dev = &pdev->dev; ++ INIT_WORK(&glue->work, sunxi_musb_work); ++ glue->host_nb.notifier_call = sunxi_musb_host_notifier; ++ ++ glue->clk = devm_clk_get(&pdev->dev, NULL); ++ if (IS_ERR(glue->clk)) { ++ dev_err(&pdev->dev, "Error getting clock: %ld\n", ++ PTR_ERR(glue->clk)); ++ return PTR_ERR(glue->clk); ++ } ++ ++ glue->phy = devm_phy_get(&pdev->dev, "usb"); ++ if (IS_ERR(glue->phy)) { ++ if (PTR_ERR(glue->phy) == -EPROBE_DEFER) ++ return -EPROBE_DEFER; ++ dev_err(&pdev->dev, "Error getting phy %ld\n", ++ PTR_ERR(glue->phy)); ++ return PTR_ERR(glue->phy); ++ } ++ ++ glue->usb_phy = usb_phy_generic_register(); ++ if (IS_ERR(glue->usb_phy)) { ++ dev_err(&pdev->dev, "Error registering usb-phy %ld\n", ++ PTR_ERR(glue->usb_phy)); ++ return PTR_ERR(glue->usb_phy); ++ } ++ ++ glue->xceiv = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); ++ if (IS_ERR(glue->xceiv)) { ++ ret = PTR_ERR(glue->xceiv); ++ dev_err(&pdev->dev, "Error getting usb-phy %d\n", ret); ++ goto err_unregister_usb_phy; ++ } ++ ++ platform_set_drvdata(pdev, glue); ++ ++ memset(&pinfo, 0, sizeof(pinfo)); ++ pinfo.name = "musb-hdrc"; ++ pinfo.id = PLATFORM_DEVID_AUTO; ++ pinfo.parent = &pdev->dev; ++ pinfo.res = pdev->resource; ++ pinfo.num_res = pdev->num_resources; ++ pinfo.data = &pdata; ++ pinfo.size_data = sizeof(pdata); ++ ++ glue->musb = platform_device_register_full(&pinfo); ++ if (IS_ERR(glue->musb)) { ++ ret = PTR_ERR(glue->musb); ++ dev_err(&pdev->dev, "Error registering musb dev: %d\n", ret); ++ goto err_unregister_usb_phy; ++ } ++ ++ return 0; ++ ++err_unregister_usb_phy: ++ usb_phy_generic_unregister(glue->usb_phy); ++ return ret; ++} ++ ++static int sunxi_musb_remove(struct platform_device *pdev) ++{ ++ struct sunxi_glue *glue = platform_get_drvdata(pdev); ++ struct platform_device *usb_phy = glue->usb_phy; ++ ++ platform_device_unregister(glue->musb); /* Frees glue ! */ ++ usb_phy_generic_unregister(usb_phy); ++ ++ return 0; ++} ++ ++static const struct of_device_id sunxi_musb_match[] = { ++ { .compatible = "allwinner,sun4i-a10-musb", }, ++ {} ++}; ++ ++static struct platform_driver sunxi_musb_driver = { ++ .probe = sunxi_musb_probe, ++ .remove = sunxi_musb_remove, ++ .driver = { ++ .name = "musb-sunxi", ++ .of_match_table = sunxi_musb_match, ++ }, ++}; ++module_platform_driver(sunxi_musb_driver); ++ ++MODULE_DESCRIPTION("Allwinner sunxi MUSB Glue Layer"); ++MODULE_AUTHOR("Hans de Goede "); ++MODULE_LICENSE("GPL v2"); -- cgit v1.2.3