usb: musb: sunxi: Simplify dr_mode handling
phy-sun4i-usb now has proper dr_mode handling, it always registers an extcon, and sends a notify with the mode (even when in peripheral- / host-only mode) at least once. So we can simply the sunxi musb glue by always registering its extcon notifier and relying on sunxi_musb_work() to enable vbus when in host-only mode. This also enables host- and peripheral-only mode with vbus monitoring. Tested-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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cd53bd6893
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a1ca2c6b29
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@ -256,12 +256,10 @@ static int sunxi_musb_init(struct musb *musb)
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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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if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) {
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ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST,
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&glue->host_nb);
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if (ret)
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goto error_reset_assert;
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}
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ret = phy_init(glue->phy);
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if (ret)
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@ -275,7 +273,6 @@ static int sunxi_musb_init(struct musb *musb)
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return 0;
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error_unregister_notifier:
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if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
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extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
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&glue->host_nb);
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error_reset_assert:
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@ -301,7 +298,6 @@ static int sunxi_musb_exit(struct musb *musb)
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phy_exit(glue->phy);
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if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
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extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
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&glue->host_nb);
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@ -315,25 +311,6 @@ static int sunxi_musb_exit(struct musb *musb)
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return 0;
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}
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static int sunxi_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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int ret;
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if (mode == MUSB_HOST) {
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ret = phy_power_on(glue->phy);
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if (ret)
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return ret;
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set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
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/* Stop musb work from turning vbus off again */
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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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}
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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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@ -582,7 +559,6 @@ static const struct musb_platform_ops sunxi_musb_ops = {
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.exit = sunxi_musb_exit,
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.enable = sunxi_musb_enable,
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.disable = sunxi_musb_disable,
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.set_mode = sunxi_set_mode,
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.fifo_offset = sunxi_musb_fifo_offset,
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.ep_offset = sunxi_musb_ep_offset,
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.busctl_offset = sunxi_musb_busctl_offset,
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@ -638,10 +614,6 @@ static int sunxi_musb_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
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if (!glue)
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return -ENOMEM;
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memset(&pdata, 0, sizeof(pdata));
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switch (usb_get_dr_mode(&pdev->dev)) {
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#if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
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@ -649,15 +621,13 @@ static int sunxi_musb_probe(struct platform_device *pdev)
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pdata.mode = MUSB_PORT_MODE_HOST;
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break;
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#endif
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#if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_GADGET
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case USB_DR_MODE_PERIPHERAL:
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pdata.mode = MUSB_PORT_MODE_GADGET;
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break;
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#endif
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#ifdef CONFIG_USB_MUSB_DUAL_ROLE
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case USB_DR_MODE_OTG:
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glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);
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if (IS_ERR(glue->extcon)) {
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if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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dev_err(&pdev->dev, "Invalid or missing extcon\n");
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return PTR_ERR(glue->extcon);
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}
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pdata.mode = MUSB_PORT_MODE_DUAL_ROLE;
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break;
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#endif
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@ -668,6 +638,10 @@ static int sunxi_musb_probe(struct platform_device *pdev)
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pdata.platform_ops = &sunxi_musb_ops;
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pdata.config = &sunxi_musb_hdrc_config;
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glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
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if (!glue)
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return -ENOMEM;
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glue->dev = &pdev->dev;
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INIT_WORK(&glue->work, sunxi_musb_work);
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glue->host_nb.notifier_call = sunxi_musb_host_notifier;
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@ -701,6 +675,14 @@ static int sunxi_musb_probe(struct platform_device *pdev)
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}
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}
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glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);
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if (IS_ERR(glue->extcon)) {
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if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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dev_err(&pdev->dev, "Invalid or missing extcon\n");
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return PTR_ERR(glue->extcon);
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}
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glue->phy = devm_phy_get(&pdev->dev, "usb");
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if (IS_ERR(glue->phy)) {
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if (PTR_ERR(glue->phy) == -EPROBE_DEFER)
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