diff options
Diffstat (limited to 'drivers/usb/mtu3/mtu3_core.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_core.c | 72 |
1 files changed, 54 insertions, 18 deletions
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 99c65b0788ff..b1b99a8f6a7a 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * mtu3_core.c - hardware access layer and gadget init/exit of * MediaTek usb3 Dual-Role Controller Driver @@ -5,18 +6,9 @@ * Copyright (C) 2016 MediaTek Inc. * * Author: Chunfeng Yun <chunfeng.yun@mediatek.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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/dma-mapping.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of_address.h> @@ -114,7 +106,9 @@ static int mtu3_device_enable(struct mtu3 *mtu) mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), (SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_HOST_SEL)); - mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + + if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) + mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); return ssusb_check_clocks(mtu->ssusb, check_clk); } @@ -129,7 +123,10 @@ static void mtu3_device_disable(struct mtu3 *mtu) mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN); - mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + + if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) + mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } @@ -236,7 +233,7 @@ void mtu3_ep_stall_set(struct mtu3_ep *mep, bool set) void mtu3_dev_on_off(struct mtu3 *mtu, int is_on) { - if (mtu->is_u3_ip && (mtu->max_speed == USB_SPEED_SUPER)) + if (mtu->is_u3_ip && mtu->max_speed >= USB_SPEED_SUPER) mtu3_ss_func_set(mtu, is_on); else mtu3_hs_softconn_set(mtu, is_on); @@ -546,6 +543,9 @@ static void mtu3_set_speed(struct mtu3 *mtu) mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN); /* HS/FS detected by HW */ mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE); + } else if (mtu->max_speed == USB_SPEED_SUPER) { + mtu3_clrbits(mtu->ippc_base, SSUSB_U3_CTRL(0), + SSUSB_U3_PORT_SSP_SPEED); } dev_info(mtu->dev, "max_speed: %s\n", @@ -623,6 +623,10 @@ static irqreturn_t mtu3_link_isr(struct mtu3 *mtu) udev_speed = USB_SPEED_SUPER; maxpkt = 512; break; + case MTU3_SPEED_SUPER_PLUS: + udev_speed = USB_SPEED_SUPER_PLUS; + maxpkt = 512; + break; default: udev_speed = USB_SPEED_UNKNOWN; break; @@ -759,7 +763,31 @@ static void mtu3_hw_exit(struct mtu3 *mtu) mtu3_mem_free(mtu); } -/*-------------------------------------------------------------------------*/ +/** + * we set 32-bit DMA mask by default, here check whether the controller + * supports 36-bit DMA or not, if it does, set 36-bit DMA mask. + */ +static int mtu3_set_dma_mask(struct mtu3 *mtu) +{ + struct device *dev = mtu->dev; + bool is_36bit = false; + int ret = 0; + u32 value; + + value = mtu3_readl(mtu->mac_base, U3D_MISC_CTRL); + if (value & DMA_ADDR_36BIT) { + is_36bit = true; + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(36)); + /* If set 36-bit DMA mask fails, fall back to 32-bit DMA mask */ + if (ret) { + is_36bit = false; + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + } + } + dev_info(dev, "dma mask: %s bits\n", is_36bit ? "36" : "32"); + + return ret; +} int ssusb_gadget_init(struct ssusb_mtk *ssusb) { @@ -774,9 +802,9 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb) return -ENOMEM; mtu->irq = platform_get_irq(pdev, 0); - if (mtu->irq <= 0) { + if (mtu->irq < 0) { dev_err(dev, "fail to get irq number\n"); - return -ENODEV; + return mtu->irq; } dev_info(dev, "irq %d\n", mtu->irq); @@ -800,14 +828,15 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb) case USB_SPEED_FULL: case USB_SPEED_HIGH: case USB_SPEED_SUPER: + case USB_SPEED_SUPER_PLUS: break; default: dev_err(dev, "invalid max_speed: %s\n", usb_speed_string(mtu->max_speed)); /* fall through */ case USB_SPEED_UNKNOWN: - /* default as SS */ - mtu->max_speed = USB_SPEED_SUPER; + /* default as SSP */ + mtu->max_speed = USB_SPEED_SUPER_PLUS; break; } @@ -820,6 +849,12 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb) return ret; } + ret = mtu3_set_dma_mask(mtu); + if (ret) { + dev_err(dev, "mtu3 set dma_mask failed:%d\n", ret); + goto dma_mask_err; + } + ret = devm_request_irq(dev, mtu->irq, mtu3_irq, 0, dev_name(dev), mtu); if (ret) { dev_err(dev, "request irq %d failed!\n", mtu->irq); @@ -845,6 +880,7 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb) gadget_err: device_init_wakeup(dev, false); +dma_mask_err: irq_err: mtu3_hw_exit(mtu); ssusb->u3d = NULL; |