![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Acked-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
842 lines
23 KiB
C
842 lines
23 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Allwinner sun4i MUSB Glue Layer
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*
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* Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
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*
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* Based on code from
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/extcon.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/phy/phy-sun4i-usb.h>
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#include <linux/platform_device.h>
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#include <linux/reset.h>
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#include <linux/soc/sunxi/sunxi_sram.h>
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#include <linux/usb/musb.h>
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#include <linux/usb/of.h>
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#include <linux/usb/usb_phy_generic.h>
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#include <linux/workqueue.h>
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#include "musb_core.h"
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/*
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* Register offsets, note sunxi musb has a different layout then most
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* musb implementations, we translate the layout in musb_readb & friends.
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*/
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#define SUNXI_MUSB_POWER 0x0040
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#define SUNXI_MUSB_DEVCTL 0x0041
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#define SUNXI_MUSB_INDEX 0x0042
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#define SUNXI_MUSB_VEND0 0x0043
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#define SUNXI_MUSB_INTRTX 0x0044
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#define SUNXI_MUSB_INTRRX 0x0046
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#define SUNXI_MUSB_INTRTXE 0x0048
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#define SUNXI_MUSB_INTRRXE 0x004a
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#define SUNXI_MUSB_INTRUSB 0x004c
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#define SUNXI_MUSB_INTRUSBE 0x0050
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#define SUNXI_MUSB_FRAME 0x0054
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#define SUNXI_MUSB_TXFIFOSZ 0x0090
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#define SUNXI_MUSB_TXFIFOADD 0x0092
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#define SUNXI_MUSB_RXFIFOSZ 0x0094
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#define SUNXI_MUSB_RXFIFOADD 0x0096
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#define SUNXI_MUSB_FADDR 0x0098
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#define SUNXI_MUSB_TXFUNCADDR 0x0098
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#define SUNXI_MUSB_TXHUBADDR 0x009a
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#define SUNXI_MUSB_TXHUBPORT 0x009b
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#define SUNXI_MUSB_RXFUNCADDR 0x009c
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#define SUNXI_MUSB_RXHUBADDR 0x009e
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#define SUNXI_MUSB_RXHUBPORT 0x009f
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#define SUNXI_MUSB_CONFIGDATA 0x00c0
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/* VEND0 bits */
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#define SUNXI_MUSB_VEND0_PIO_MODE 0
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/* flags */
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#define SUNXI_MUSB_FL_ENABLED 0
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#define SUNXI_MUSB_FL_HOSTMODE 1
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#define SUNXI_MUSB_FL_HOSTMODE_PEND 2
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#define SUNXI_MUSB_FL_VBUS_ON 3
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#define SUNXI_MUSB_FL_PHY_ON 4
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#define SUNXI_MUSB_FL_HAS_SRAM 5
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#define SUNXI_MUSB_FL_HAS_RESET 6
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#define SUNXI_MUSB_FL_NO_CONFIGDATA 7
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#define SUNXI_MUSB_FL_PHY_MODE_PEND 8
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/* Our read/write methods need access and do not get passed in a musb ref :| */
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static struct musb *sunxi_musb;
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struct sunxi_glue {
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struct device *dev;
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struct musb *musb;
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struct platform_device *musb_pdev;
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struct clk *clk;
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struct reset_control *rst;
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struct phy *phy;
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struct platform_device *usb_phy;
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struct usb_phy *xceiv;
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enum phy_mode phy_mode;
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unsigned long flags;
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struct work_struct work;
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struct extcon_dev *extcon;
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struct notifier_block host_nb;
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};
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/* phy_power_on / off may sleep, so we use a workqueue */
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static void sunxi_musb_work(struct work_struct *work)
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{
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struct sunxi_glue *glue = container_of(work, struct sunxi_glue, work);
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bool vbus_on, phy_on;
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if (!test_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
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return;
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if (test_and_clear_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags)) {
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struct musb *musb = glue->musb;
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unsigned long flags;
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u8 devctl;
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spin_lock_irqsave(&musb->lock, flags);
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devctl = readb(musb->mregs + SUNXI_MUSB_DEVCTL);
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if (test_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags)) {
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set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
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musb->xceiv->otg->default_a = 1;
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musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
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MUSB_HST_MODE(musb);
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devctl |= MUSB_DEVCTL_SESSION;
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} else {
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clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
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musb->xceiv->otg->default_a = 0;
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musb->xceiv->otg->state = OTG_STATE_B_IDLE;
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MUSB_DEV_MODE(musb);
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devctl &= ~MUSB_DEVCTL_SESSION;
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}
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writeb(devctl, musb->mregs + SUNXI_MUSB_DEVCTL);
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spin_unlock_irqrestore(&musb->lock, flags);
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}
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vbus_on = test_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
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phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
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if (phy_on != vbus_on) {
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if (vbus_on) {
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phy_power_on(glue->phy);
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set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
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} else {
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phy_power_off(glue->phy);
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clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
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}
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}
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if (test_and_clear_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags))
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phy_set_mode(glue->phy, glue->phy_mode);
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}
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static void sunxi_musb_set_vbus(struct musb *musb, int is_on)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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if (is_on) {
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set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
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musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
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} else {
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clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
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}
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schedule_work(&glue->work);
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}
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static void sunxi_musb_pre_root_reset_end(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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sun4i_usb_phy_set_squelch_detect(glue->phy, false);
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}
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static void sunxi_musb_post_root_reset_end(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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sun4i_usb_phy_set_squelch_detect(glue->phy, true);
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}
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static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci)
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{
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struct musb *musb = __hci;
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unsigned long flags;
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spin_lock_irqsave(&musb->lock, flags);
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musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB);
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if (musb->int_usb)
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writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB);
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if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) {
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/* ep0 FADDR must be 0 when (re)entering peripheral mode */
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musb_ep_select(musb->mregs, 0);
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musb_writeb(musb->mregs, MUSB_FADDR, 0);
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}
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musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);
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if (musb->int_tx)
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writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);
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musb->int_rx = readw(musb->mregs + SUNXI_MUSB_INTRRX);
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if (musb->int_rx)
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writew(musb->int_rx, musb->mregs + SUNXI_MUSB_INTRRX);
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musb_interrupt(musb);
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spin_unlock_irqrestore(&musb->lock, flags);
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return IRQ_HANDLED;
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}
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static int sunxi_musb_host_notifier(struct notifier_block *nb,
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unsigned long event, void *ptr)
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{
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struct sunxi_glue *glue = container_of(nb, struct sunxi_glue, host_nb);
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if (event)
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set_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
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else
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clear_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
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set_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags);
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schedule_work(&glue->work);
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return NOTIFY_DONE;
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}
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static int sunxi_musb_init(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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int ret;
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sunxi_musb = musb;
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musb->phy = glue->phy;
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musb->xceiv = glue->xceiv;
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if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) {
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ret = sunxi_sram_claim(musb->controller->parent);
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if (ret)
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return ret;
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}
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ret = clk_prepare_enable(glue->clk);
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if (ret)
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goto error_sram_release;
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if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
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ret = reset_control_deassert(glue->rst);
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if (ret)
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goto error_clk_disable;
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}
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writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0);
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/* Register notifier before calling phy_init() */
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ret = devm_extcon_register_notifier(glue->dev, glue->extcon,
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EXTCON_USB_HOST, &glue->host_nb);
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if (ret)
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goto error_reset_assert;
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ret = phy_init(glue->phy);
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if (ret)
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goto error_reset_assert;
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musb->isr = sunxi_musb_interrupt;
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/* Stop the musb-core from doing runtime pm (not supported on sunxi) */
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pm_runtime_get(musb->controller);
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return 0;
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error_reset_assert:
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if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
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reset_control_assert(glue->rst);
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error_clk_disable:
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clk_disable_unprepare(glue->clk);
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error_sram_release:
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if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
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sunxi_sram_release(musb->controller->parent);
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return ret;
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}
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static int sunxi_musb_exit(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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pm_runtime_put(musb->controller);
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cancel_work_sync(&glue->work);
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if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags))
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phy_power_off(glue->phy);
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phy_exit(glue->phy);
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if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
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reset_control_assert(glue->rst);
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clk_disable_unprepare(glue->clk);
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if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
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sunxi_sram_release(musb->controller->parent);
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devm_usb_put_phy(glue->dev, glue->xceiv);
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return 0;
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}
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static void sunxi_musb_enable(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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glue->musb = musb;
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/* musb_core does not call us in a balanced manner */
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if (test_and_set_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
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return;
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schedule_work(&glue->work);
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}
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static void sunxi_musb_disable(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags);
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}
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static struct dma_controller *
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sunxi_musb_dma_controller_create(struct musb *musb, void __iomem *base)
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{
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return NULL;
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}
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static void sunxi_musb_dma_controller_destroy(struct dma_controller *c)
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{
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}
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static int sunxi_musb_set_mode(struct musb *musb, u8 mode)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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enum phy_mode new_mode;
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switch (mode) {
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case MUSB_HOST:
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new_mode = PHY_MODE_USB_HOST;
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break;
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case MUSB_PERIPHERAL:
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new_mode = PHY_MODE_USB_DEVICE;
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break;
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case MUSB_OTG:
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new_mode = PHY_MODE_USB_OTG;
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break;
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default:
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dev_err(musb->controller->parent,
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"Error requested mode not supported by this kernel\n");
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return -EINVAL;
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}
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if (glue->phy_mode == new_mode)
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return 0;
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if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE) {
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dev_err(musb->controller->parent,
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"Error changing modes is only supported in dual role mode\n");
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return -EINVAL;
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}
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if (musb->port1_status & USB_PORT_STAT_ENABLE)
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musb_root_disconnect(musb);
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/*
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* phy_set_mode may sleep, and we're called with a spinlock held,
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* so let sunxi_musb_work deal with it.
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*/
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glue->phy_mode = new_mode;
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set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags);
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schedule_work(&glue->work);
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return 0;
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}
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static int sunxi_musb_recover(struct musb *musb)
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{
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struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
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/*
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* Schedule a phy_set_mode with the current glue->phy_mode value,
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* this will force end the current session.
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*/
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set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags);
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schedule_work(&glue->work);
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return 0;
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}
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/*
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* sunxi musb register layout
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* 0x00 - 0x17 fifo regs, 1 long per fifo
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* 0x40 - 0x57 generic control regs (power - frame)
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* 0x80 - 0x8f ep control regs (addressed through hw_ep->regs, indexed)
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* 0x90 - 0x97 fifo control regs (indexed)
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* 0x98 - 0x9f multipoint / busctl regs (indexed)
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* 0xc0 configdata reg
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*/
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static u32 sunxi_musb_fifo_offset(u8 epnum)
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{
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return (epnum * 4);
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}
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static u32 sunxi_musb_ep_offset(u8 epnum, u16 offset)
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{
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WARN_ONCE(offset != 0,
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"sunxi_musb_ep_offset called with non 0 offset\n");
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return 0x80; /* indexed, so ignore epnum */
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}
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static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset)
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{
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return SUNXI_MUSB_TXFUNCADDR + offset;
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}
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static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset)
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{
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struct sunxi_glue *glue;
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if (addr == sunxi_musb->mregs) {
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/* generic control or fifo control reg access */
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switch (offset) {
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case MUSB_FADDR:
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return readb(addr + SUNXI_MUSB_FADDR);
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case MUSB_POWER:
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return readb(addr + SUNXI_MUSB_POWER);
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case MUSB_INTRUSB:
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return readb(addr + SUNXI_MUSB_INTRUSB);
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case MUSB_INTRUSBE:
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return readb(addr + SUNXI_MUSB_INTRUSBE);
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case MUSB_INDEX:
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return readb(addr + SUNXI_MUSB_INDEX);
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case MUSB_TESTMODE:
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return 0; /* No testmode on sunxi */
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case MUSB_DEVCTL:
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return readb(addr + SUNXI_MUSB_DEVCTL);
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case MUSB_TXFIFOSZ:
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return readb(addr + SUNXI_MUSB_TXFIFOSZ);
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case MUSB_RXFIFOSZ:
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return readb(addr + SUNXI_MUSB_RXFIFOSZ);
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case MUSB_CONFIGDATA + 0x10: /* See musb_read_configdata() */
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glue = dev_get_drvdata(sunxi_musb->controller->parent);
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/* A33 saves a reg, and we get to hardcode this */
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if (test_bit(SUNXI_MUSB_FL_NO_CONFIGDATA,
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&glue->flags))
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return 0xde;
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return readb(addr + SUNXI_MUSB_CONFIGDATA);
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/* Offset for these is fixed by sunxi_musb_busctl_offset() */
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case SUNXI_MUSB_TXFUNCADDR:
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case SUNXI_MUSB_TXHUBADDR:
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case SUNXI_MUSB_TXHUBPORT:
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case SUNXI_MUSB_RXFUNCADDR:
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case SUNXI_MUSB_RXHUBADDR:
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case SUNXI_MUSB_RXHUBPORT:
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/* multipoint / busctl reg access */
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return readb(addr + offset);
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default:
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dev_err(sunxi_musb->controller->parent,
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"Error unknown readb offset %u\n", offset);
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return 0;
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}
|
|
} 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,
|
|
.dma_init = sunxi_musb_dma_controller_create,
|
|
.dma_exit = sunxi_musb_dma_controller_destroy,
|
|
.set_mode = sunxi_musb_set_mode,
|
|
.recover = sunxi_musb_recover,
|
|
.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),
|
|
};
|
|
|
|
/* H3/V3s OTG supports only 4 endpoints */
|
|
#define SUNXI_MUSB_MAX_EP_NUM_H3 5
|
|
|
|
static struct musb_fifo_cfg sunxi_musb_mode_cfg_h3[] = {
|
|
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),
|
|
};
|
|
|
|
static const 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 struct musb_hdrc_config sunxi_musb_hdrc_config_h3 = {
|
|
.fifo_cfg = sunxi_musb_mode_cfg_h3,
|
|
.fifo_cfg_size = ARRAY_SIZE(sunxi_musb_mode_cfg_h3),
|
|
.multipoint = true,
|
|
.dyn_fifo = true,
|
|
.soft_con = true,
|
|
.num_eps = SUNXI_MUSB_MAX_EP_NUM_H3,
|
|
.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 (usb_get_dr_mode(&pdev->dev)) {
|
|
#if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
|
|
case USB_DR_MODE_HOST:
|
|
pdata.mode = MUSB_PORT_MODE_HOST;
|
|
glue->phy_mode = PHY_MODE_USB_HOST;
|
|
break;
|
|
#endif
|
|
#if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_GADGET
|
|
case USB_DR_MODE_PERIPHERAL:
|
|
pdata.mode = MUSB_PORT_MODE_GADGET;
|
|
glue->phy_mode = PHY_MODE_USB_DEVICE;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_USB_MUSB_DUAL_ROLE
|
|
case USB_DR_MODE_OTG:
|
|
pdata.mode = MUSB_PORT_MODE_DUAL_ROLE;
|
|
glue->phy_mode = PHY_MODE_USB_OTG;
|
|
break;
|
|
#endif
|
|
default:
|
|
dev_err(&pdev->dev, "Invalid or missing 'dr_mode' property\n");
|
|
return -EINVAL;
|
|
}
|
|
pdata.platform_ops = &sunxi_musb_ops;
|
|
if (!of_device_is_compatible(np, "allwinner,sun8i-h3-musb"))
|
|
pdata.config = &sunxi_musb_hdrc_config;
|
|
else
|
|
pdata.config = &sunxi_musb_hdrc_config_h3;
|
|
|
|
glue->dev = &pdev->dev;
|
|
INIT_WORK(&glue->work, sunxi_musb_work);
|
|
glue->host_nb.notifier_call = sunxi_musb_host_notifier;
|
|
|
|
if (of_device_is_compatible(np, "allwinner,sun4i-a10-musb"))
|
|
set_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags);
|
|
|
|
if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb"))
|
|
set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
|
|
|
|
if (of_device_is_compatible(np, "allwinner,sun8i-a33-musb") ||
|
|
of_device_is_compatible(np, "allwinner,sun8i-h3-musb")) {
|
|
set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
|
|
set_bit(SUNXI_MUSB_FL_NO_CONFIGDATA, &glue->flags);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
|
|
glue->rst = devm_reset_control_get(&pdev->dev, NULL);
|
|
if (IS_ERR(glue->rst)) {
|
|
if (PTR_ERR(glue->rst) == -EPROBE_DEFER)
|
|
return -EPROBE_DEFER;
|
|
dev_err(&pdev->dev, "Error getting reset %ld\n",
|
|
PTR_ERR(glue->rst));
|
|
return PTR_ERR(glue->rst);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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_pdev = platform_device_register_full(&pinfo);
|
|
if (IS_ERR(glue->musb_pdev)) {
|
|
ret = PTR_ERR(glue->musb_pdev);
|
|
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_pdev);
|
|
usb_phy_generic_unregister(usb_phy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id sunxi_musb_match[] = {
|
|
{ .compatible = "allwinner,sun4i-a10-musb", },
|
|
{ .compatible = "allwinner,sun6i-a31-musb", },
|
|
{ .compatible = "allwinner,sun8i-a33-musb", },
|
|
{ .compatible = "allwinner,sun8i-h3-musb", },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, sunxi_musb_match);
|
|
|
|
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");
|