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-rw-r--r--target/linux/sunxi/patches-4.1/170-musb-add-driver.patch820
1 files changed, 820 insertions, 0 deletions
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 <hdegoede@redhat.com>
+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 <hdegoede@redhat.com>
+Signed-off-by: Felipe Balbi <balbi@ti.com>
+---
+ .../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 <hdegoede@redhat.com>
++ *
++ * Based on code from
++ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
++ *
++ * 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 <linux/clk.h>
++#include <linux/err.h>
++#include <linux/extcon.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/phy/phy-sun4i-usb.h>
++#include <linux/platform_device.h>
++#include <linux/soc/sunxi/sunxi_sram.h>
++#include <linux/usb/musb.h>
++#include <linux/usb/of.h>
++#include <linux/usb/usb_phy_generic.h>
++#include <linux/workqueue.h>
++#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 <hdegoede@redhat.com>");
++MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 13:52:26 +0000