[Feature]merge MTK MR3.0 release
Change-Id: I8b18a419fe519a1ac7af5f4b28b28416d41e0de1
diff --git a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3.h b/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3.h
index 9606963..0b06a61 100644
--- a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3.h
+++ b/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3.h
@@ -309,6 +309,8 @@
bool clk_mgr;
PLATFORM_TYPE plat_type;
PHY_WORKAROUND_MODE fpga_phy_workaround;
+ struct mutex mutex;
+ bool power_status;
};
/**
diff --git a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_core1.c b/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_core1.c
deleted file mode 100755
index 0f2cb9b..0000000
--- a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_core1.c
+++ /dev/null
@@ -1,1142 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * mtu3_core.c - hardware access layer and gadget init/exit of
- * MediaTek usb3 Dual-Role Controller Driver
- *
- * Copyright (C) 2016 MediaTek Inc.
- *
- * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/platform_device.h>
-#include <linux/of_gpio.h>
-#include <linux/gpio.h>
-
-#include "mtu3.h"
-#include "mtu3_debug.h"
-#include "mtu3_trace.h"
-
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
-static int total_isr_debug = 1;
-module_param(total_isr_debug, uint, 0644);
-MODULE_PARM_DESC (total_isr_debug, "profile total USB isr");
-extern unsigned long total_isr;
-
-static int ep_fifo_alloc(struct mtu3_ep *mep, u32 seg_size)
-{
- struct mtu3_fifo_info *fifo = mep->fifo;
- u32 num_bits = DIV_ROUND_UP(seg_size, MTU3_EP_FIFO_UNIT);
- u32 start_bit;
-
- /* ensure that @mep->fifo_seg_size is power of two */
- num_bits = roundup_pow_of_two(num_bits);
- if (num_bits > fifo->limit)
- return -EINVAL;
-
- mep->fifo_seg_size = num_bits * MTU3_EP_FIFO_UNIT;
- num_bits = num_bits * (mep->slot + 1);
- start_bit = bitmap_find_next_zero_area(fifo->bitmap,
- fifo->limit, 0, num_bits, 0);
- if (start_bit >= fifo->limit)
- return -EOVERFLOW;
-
- bitmap_set(fifo->bitmap, start_bit, num_bits);
- mep->fifo_size = num_bits * MTU3_EP_FIFO_UNIT;
- mep->fifo_addr = fifo->base + MTU3_EP_FIFO_UNIT * start_bit;
-
- dev_dbg(mep->mtu->dev, "%s fifo:%#x/%#x, start_bit: %d\n",
- __func__, mep->fifo_seg_size, mep->fifo_size, start_bit);
-
- return mep->fifo_addr;
-}
-#endif
-
-static void ep_fifo_free(struct mtu3_ep *mep)
-{
- struct mtu3_fifo_info *fifo = mep->fifo;
- u32 addr = mep->fifo_addr;
- u32 bits = mep->fifo_size / MTU3_EP_FIFO_UNIT;
- u32 start_bit;
-
- if (unlikely(addr < fifo->base || bits > fifo->limit))
- return;
-
- start_bit = (addr - fifo->base) / MTU3_EP_FIFO_UNIT;
- bitmap_clear(fifo->bitmap, start_bit, bits);
- mep->fifo_size = 0;
- mep->fifo_seg_size = 0;
-
- dev_dbg(mep->mtu->dev, "%s size:%#x/%#x, start_bit: %d\n",
- __func__, mep->fifo_seg_size, mep->fifo_size, start_bit);
-}
-
-/* enable/disable U3D SS function */
-static inline void mtu3_ss_func_set(struct mtu3 *mtu, bool enable)
-{
- /* If usb3_en==0, LTSSM will go to SS.Disable state */
- if (enable) {
- /*
- Temp Fix:
- A60931 new DTB has true type-C connector.
- Phy sends vbus_present and starts to swap lane.
- It will take about 120ms to swap lane if needed.
- Device shall wait lane swap and then enable U3 terminator.
- */
- if (mtu->ssusb->plat_type == PLAT_FPGA && mtu->ssusb->fpga_phy_workaround == A60931_WORKAROUND){
- mdelay(180);
- }
- mtu3_setbits(mtu->mac_base, U3D_USB3_CONFIG, USB3_EN);
- }
- else
- mtu3_clrbits(mtu->mac_base, U3D_USB3_CONFIG, USB3_EN);
-
- dev_info(mtu->dev, "USB3_EN = %d\n", !!enable);
-}
-
-/* set/clear U3D HS device soft connect */
-static inline void mtu3_hs_softconn_set(struct mtu3 *mtu, bool enable)
-{
- if (enable) {
- mtu3_setbits(mtu->mac_base, U3D_POWER_MANAGEMENT,
- SOFT_CONN | SUSPENDM_ENABLE);
- } else {
- mtu3_clrbits(mtu->mac_base, U3D_POWER_MANAGEMENT,
- SOFT_CONN | SUSPENDM_ENABLE);
- }
- dev_info(mtu->dev, "SOFTCONN = %d\n", !!enable);
-}
-
-/* only port0 of U2/U3 supports device mode */
-static int mtu3_device_enable(struct mtu3 *mtu)
-{
- void __iomem *ibase = mtu->ippc_base;
- u32 check_clk = 0;
-
- mtu3_clrbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
-
- if (mtu->is_u3_ip) {
- check_clk = SSUSB_U3_MAC_RST_B_STS;
- mtu3_clrbits(ibase, SSUSB_U3_CTRL(0),
- (SSUSB_U3_PORT_DIS | SSUSB_U3_PORT_PDN |
- SSUSB_U3_PORT_HOST_SEL));
- }
- mtu3_clrbits(ibase, SSUSB_U2_CTRL(0),
- (SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN |
- SSUSB_U2_PORT_HOST_SEL));
-
- if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) {
- mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL);
- if (mtu->is_u3_ip)
- mtu3_setbits(ibase, SSUSB_U3_CTRL(0),
- SSUSB_U3_PORT_DUAL_MODE);
- }
-
- return ssusb_check_clocks(mtu->ssusb, check_clk);
-}
-
-static void mtu3_device_disable(struct mtu3 *mtu)
-{
- void __iomem *ibase = mtu->ippc_base;
-
- if (mtu->is_u3_ip)
- mtu3_setbits(ibase, SSUSB_U3_CTRL(0),
- (SSUSB_U3_PORT_DIS | SSUSB_U3_PORT_PDN));
-
- mtu3_setbits(ibase, SSUSB_U2_CTRL(0),
- SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN);
-
- 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);
-}
-
-/* reset U3D's device module. */
-static void mtu3_device_reset(struct mtu3 *mtu)
-{
- void __iomem *ibase = mtu->ippc_base;
-
- mtu3_setbits(ibase, U3D_SSUSB_DEV_RST_CTRL, SSUSB_DEV_SW_RST);
- udelay(1);
- mtu3_clrbits(ibase, U3D_SSUSB_DEV_RST_CTRL, SSUSB_DEV_SW_RST);
-}
-
-/* disable all interrupts */
-static void mtu3_intr_disable(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
-
- /* Disable level 1 interrupts */
- mtu3_writel(mbase, U3D_LV1IECR, ~0x0);
- /* Disable endpoint interrupts */
- mtu3_writel(mbase, U3D_EPIECR, ~0x0);
-}
-
-static void mtu3_intr_status_clear(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
-
- /* Clear EP0 and Tx/Rx EPn interrupts status */
- mtu3_writel(mbase, U3D_EPISR, ~0x0);
- /* Clear U2 USB common interrupts status */
- mtu3_writel(mbase, U3D_COMMON_USB_INTR, ~0x0);
- /* Clear U3 LTSSM interrupts status */
- mtu3_writel(mbase, U3D_LTSSM_INTR, ~0x0);
- /* Clear speed change interrupt status */
- mtu3_writel(mbase, U3D_DEV_LINK_INTR, ~0x0);
-}
-
-/* enable system global interrupt */
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
-static void mtu3_intr_enable(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
- u32 value;
-
- /*Enable level 1 interrupts (BMU, QMU, MAC3, DMA, MAC2, EPCTL) */
- value = BMU_INTR | QMU_INTR | MAC3_INTR | MAC2_INTR | EP_CTRL_INTR;
- mtu3_writel(mbase, U3D_LV1IESR, value);
-
- /* Enable U2 common USB interrupts */
- value = SUSPEND_INTR | RESUME_INTR | RESET_INTR | LPM_RESUME_INTR;
- mtu3_writel(mbase, U3D_COMMON_USB_INTR_ENABLE, value);
-
- if (mtu->is_u3_ip) {
- /* Enable U3 LTSSM interrupts */
- value = HOT_RST_INTR | WARM_RST_INTR |
- ENTER_U3_INTR | EXIT_U3_INTR;
- mtu3_writel(mbase, U3D_LTSSM_INTR_ENABLE, value);
- }
-
- /* Enable QMU interrupts. */
- value = TXQ_CSERR_INT | TXQ_LENERR_INT | RXQ_CSERR_INT |
- RXQ_LENERR_INT | RXQ_ZLPERR_INT;
- mtu3_writel(mbase, U3D_QIESR1, value);
-
- /* Enable speed change interrupt */
- mtu3_writel(mbase, U3D_DEV_LINK_INTR_ENABLE, SSUSB_DEV_SPEED_CHG_INTR);
-}
-#else
-static void mtu3_intr_enable(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
- u32 value;
-
- /*Enable level 1 interrupts (BMU, QMU, MAC3, DMA, MAC2, EPCTL) */
- value = QMU_INTR;
- mtu3_writel(mbase, U3D_LV1IESR, value);
-
- /* Enable QMU interrupts. */
- value = TXQ_CSERR_INT | TXQ_LENERR_INT | RXQ_CSERR_INT |
- RXQ_LENERR_INT | RXQ_ZLPERR_INT;
- mtu3_writel(mbase, U3D_QIESR1, value);
-}
-
-#endif
-
-/* reset: u2 - data toggle, u3 - SeqN, flow control status etc */
-static void mtu3_ep_reset(struct mtu3_ep *mep)
-{
- struct mtu3 *mtu = mep->mtu;
- u32 rst_bit = EP_RST(mep->is_in, mep->epnum);
-
- mtu3_setbits(mtu->mac_base, U3D_EP_RST, rst_bit);
- mtu3_clrbits(mtu->mac_base, U3D_EP_RST, rst_bit);
-}
-
-/* set/clear the stall and toggle bits for non-ep0 */
-void mtu3_ep_stall_set(struct mtu3_ep *mep, bool set)
-{
- struct mtu3 *mtu = mep->mtu;
- void __iomem *mbase = mtu->mac_base;
- u8 epnum = mep->epnum;
- u32 csr;
-
- if (mep->is_in) { /* TX */
- csr = mtu3_readl(mbase, MU3D_EP_TXCR0(epnum)) & TX_W1C_BITS;
- if (set)
- csr |= TX_SENDSTALL;
- else
- csr = (csr & (~TX_SENDSTALL)) | TX_SENTSTALL;
- mtu3_writel(mbase, MU3D_EP_TXCR0(epnum), csr);
- } else { /* RX */
- csr = mtu3_readl(mbase, MU3D_EP_RXCR0(epnum)) & RX_W1C_BITS;
- if (set)
- csr |= RX_SENDSTALL;
- else
- csr = (csr & (~RX_SENDSTALL)) | RX_SENTSTALL;
- mtu3_writel(mbase, MU3D_EP_RXCR0(epnum), csr);
- }
-
- if (!set) {
- mtu3_ep_reset(mep);
- mep->flags &= ~MTU3_EP_STALL;
- } else {
- mep->flags |= MTU3_EP_STALL;
- }
-
- dev_dbg(mtu->dev, "%s: %s\n", mep->name,
- set ? "SEND STALL" : "CLEAR STALL, with EP RESET");
-}
-
-void mtu3_dev_on_off(struct mtu3 *mtu, int is_on)
-{
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
- 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);
-#endif
-
- dev_info(mtu->dev, "gadget (%s) pullup D%s\n",
- usb_speed_string(mtu->max_speed), is_on ? "+" : "-");
-}
-
-static void mtu3_set_speed(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
-
- if (!mtu->is_u3_ip && (mtu->max_speed > USB_SPEED_HIGH))
- mtu->max_speed = USB_SPEED_HIGH;
-
- if (mtu->max_speed == USB_SPEED_FULL) {
- /* disable U3 SS function */
- mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN);
- /* disable HS function */
- mtu3_clrbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
- } else if (mtu->max_speed == USB_SPEED_HIGH) {
- 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",
- usb_speed_string(mtu->max_speed));
-}
-
-static void mtu3_regs_init(struct mtu3 *mtu)
-{
-
- void __iomem *mbase = mtu->mac_base;
- dev_info(mtu->dev, "%s\n", __func__);
-
- /* be sure interrupts are disabled before registration of ISR */
- mtu3_intr_disable(mtu);
- mtu3_intr_status_clear(mtu);
-
- if (mtu->is_u3_ip) {
- /* disable LGO_U1/U2 by default */
- mtu3_clrbits(mbase, U3D_LINK_POWER_CONTROL,
- SW_U1_REQUEST_ENABLE | SW_U2_REQUEST_ENABLE);
- /* enable accept LGO_U1/U2 link command from host */
- mtu3_setbits(mbase, U3D_LINK_POWER_CONTROL,
- SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE);
- /* device responses to u3_exit from host automatically */
- mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN);
- /* automatically build U2 link when U3 detect fail */
- mtu3_setbits(mbase, U3D_USB2_TEST_MODE, U2U3_AUTO_SWITCH);
- /* auto clear SOFT_CONN when clear USB3_EN if work as HS */
- mtu3_setbits(mbase, U3D_U3U2_SWITCH_CTRL, SOFTCON_CLR_AUTO_EN);
- }
-
- mtu3_set_speed(mtu);
-
- /* delay about 0.1us from detecting reset to send chirp-K */
- mtu3_clrbits(mbase, U3D_LINK_RESET_INFO, WTCHRP_MSK);
- /* U2/U3 detected by HW */
- mtu3_writel(mbase, U3D_DEVICE_CONF, 0);
- /* vbus detected by HW */
- mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON);
- /* enable automatical HWRW from L1 */
- mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, LPM_HRWE);
-
- //ssusb_set_force_vbus(mtu->ssusb, true);
- mtu3_writel(mbase, U3D_POWER_MANAGEMENT, (mtu3_readl(mbase, U3D_POWER_MANAGEMENT)| LPM_MODE(1)));
- dev_info(mtu->dev, "%s, U3D_POWER_MANAGEMENT:0x%x\n", __func__, mtu3_readl(mbase, U3D_POWER_MANAGEMENT));
- /* use new QMU format when HW version >= 0x1003 */
- if (mtu->gen2cp)
- mtu3_writel(mbase, U3D_QFCR, ~0x0);
-}
-
-static irqreturn_t mtu3_vbus_detect_eint_isr(int irq, void *data)
-{
- struct mtu3 *mtu = data;
-
- disable_irq_nosync(irq);
-
- if (!gpio_get_value(mtu->detect_gpio)) {
- dev_info(mtu->dev, "low-level, vbus plug out\n");
- ssusb_set_force_vbus(mtu->ssusb, false);
- irq_set_irq_type(irq, IRQF_TRIGGER_HIGH);
- } else {
- dev_info(mtu->dev, "high-level, vbus plug in\n");
- ssusb_set_force_vbus(mtu->ssusb, true);
- irq_set_irq_type(irq, IRQF_TRIGGER_LOW);
- }
- enable_irq(irq);
- return IRQ_HANDLED;
-}
-
-static int mtu3_usb_vbus_detect_init(struct mtu3 *mtu)
-{
- struct device_node *node;
- int ret;
-
- node = of_find_compatible_node(NULL, NULL,
- "mediatek,mtu3");
- if (!node) {
- dev_err(mtu->dev, "map node failed\n");
- return -ENODEV;
- }
-
- ret = of_get_named_gpio(node, "vbus_detect", 0);
- if (ret < 0) {
- dev_err(mtu->dev, "no vbus_detect gpio info\n");
- return ret;
- }
- mtu->detect_gpio= ret;
-
- ret = devm_gpio_request(mtu->dev, mtu->detect_gpio,
- "mtu_vbus_detect");
- if (ret < 0) {
- dev_err(mtu->dev, "fail to request gpio%d (%d)\n",
- mtu->detect_gpio, ret);
- return ret;
- }
-
- ret = gpio_direction_input(mtu->detect_gpio);
- if (ret < 0) {
- dev_err(mtu->dev, "fail to set gpio%d as input pin (%d)\n",
- mtu->detect_gpio, ret);
- return ret;
- }
-
- /* 20 ms */
- gpio_set_debounce(mtu->detect_gpio, 20*1000);
- if (ret < 0) {
- dev_err(mtu->dev, "fail to set gpio%d debounce (%d)\n",
- mtu->detect_gpio, ret);
- return ret;
- }
-
- mtu->detect_irq = gpio_to_irq(mtu->detect_gpio);
- if (mtu->detect_irq <= 0) {
- dev_err(mtu->dev, "gpio%d to irq fail, mtu_vbus_detect(%d)\n",
- mtu->detect_irq, ret);
- return ret;
- }
-
- ret = request_irq(mtu->detect_irq, mtu3_vbus_detect_eint_isr,
- IRQF_TRIGGER_LOW, "mtu_detect_eint", mtu);
- if (ret) {
- dev_err(mtu->dev, "request eint(%d) fail (%d)\n",
- mtu->detect_irq, ret);
- return ret;
- }
- return 0;
-}
-
-void mtu3_start(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
-
- dev_dbg(mtu->dev, "%s devctl 0x%x\n", __func__,
- mtu3_readl(mbase, U3D_DEVICE_CONTROL));
-
- mtu3_clrbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
-
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
- /* Initialize the device capability */
- mtu3_regs_init(mtu);
-#else
- /*
- * When disable U2 port, USB2_CSR's register will be reset to
- * default value after re-enable it again(HS is enabled by default).
- * So if force mac to work as FS, disable HS function.
- */
- if (mtu->max_speed == USB_SPEED_FULL)
- mtu3_clrbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
-#endif
-
- /* Initialize the default interrupts */
- mtu3_intr_enable(mtu);
- mtu->is_active = 1;
-
- if (mtu->softconnect)
- mtu3_dev_on_off(mtu, 1);
-}
-
-void mtu3_stop(struct mtu3 *mtu)
-{
- dev_dbg(mtu->dev, "%s\n", __func__);
-
- mtu3_intr_disable(mtu);
- mtu3_intr_status_clear(mtu);
-
- if (mtu->softconnect)
- mtu3_dev_on_off(mtu, 0);
-
- mtu->is_active = 0;
- mtu3_setbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
-}
-
-/* for non-ep0 */
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
-int mtu3_config_ep(struct mtu3 *mtu, struct mtu3_ep *mep,
- int interval, int burst, int mult)
-{
- void __iomem *mbase = mtu->mac_base;
- bool gen2cp = mtu->gen2cp;
- int epnum = mep->epnum;
- u32 csr0, csr1, csr2;
- int fifo_sgsz, fifo_addr;
- int num_pkts;
-
- fifo_addr = ep_fifo_alloc(mep, mep->maxp);
- if (fifo_addr < 0) {
- dev_err(mtu->dev, "alloc ep fifo failed(%d)\n", mep->maxp);
- return -ENOMEM;
- }
- fifo_sgsz = ilog2(mep->fifo_seg_size);
- dev_dbg(mtu->dev, "%s fifosz: %x(%x/%x)\n", __func__, fifo_sgsz,
- mep->fifo_seg_size, mep->fifo_size);
-
- if (mep->is_in) {
- csr0 = TX_TXMAXPKTSZ(mep->maxp);
- csr0 |= TX_DMAREQEN;
-
- num_pkts = (burst + 1) * (mult + 1) - 1;
- csr1 = TX_SS_BURST(burst) | TX_SLOT(mep->slot);
- csr1 |= TX_MAX_PKT(gen2cp, num_pkts) | TX_MULT(gen2cp, mult);
-
- csr2 = TX_FIFOADDR(fifo_addr >> 4);
- csr2 |= TX_FIFOSEGSIZE(fifo_sgsz);
-
- switch (mep->type) {
- case USB_ENDPOINT_XFER_BULK:
- csr1 |= TX_TYPE(TYPE_BULK);
- break;
- case USB_ENDPOINT_XFER_ISOC:
- csr1 |= TX_TYPE(TYPE_ISO);
- csr2 |= TX_BINTERVAL(interval);
- break;
- case USB_ENDPOINT_XFER_INT:
- csr1 |= TX_TYPE(TYPE_INT);
- csr2 |= TX_BINTERVAL(interval);
- break;
- }
-
- /* Enable QMU Done interrupt */
- mtu3_setbits(mbase, U3D_QIESR0, QMU_TX_DONE_INT(epnum));
-
- mtu3_writel(mbase, MU3D_EP_TXCR0(epnum), csr0);
- mtu3_writel(mbase, MU3D_EP_TXCR1(epnum), csr1);
- mtu3_writel(mbase, MU3D_EP_TXCR2(epnum), csr2);
-
- dev_dbg(mtu->dev, "U3D_TX%d CSR0:%#x, CSR1:%#x, CSR2:%#x\n",
- epnum, mtu3_readl(mbase, MU3D_EP_TXCR0(epnum)),
- mtu3_readl(mbase, MU3D_EP_TXCR1(epnum)),
- mtu3_readl(mbase, MU3D_EP_TXCR2(epnum)));
- } else {
- csr0 = RX_RXMAXPKTSZ(mep->maxp);
- csr0 |= RX_DMAREQEN;
-
- num_pkts = (burst + 1) * (mult + 1) - 1;
- csr1 = RX_SS_BURST(burst) | RX_SLOT(mep->slot);
- csr1 |= RX_MAX_PKT(gen2cp, num_pkts) | RX_MULT(gen2cp, mult);
-
- csr2 = RX_FIFOADDR(fifo_addr >> 4);
- csr2 |= RX_FIFOSEGSIZE(fifo_sgsz);
-
- switch (mep->type) {
- case USB_ENDPOINT_XFER_BULK:
- csr1 |= RX_TYPE(TYPE_BULK);
- break;
- case USB_ENDPOINT_XFER_ISOC:
- csr1 |= RX_TYPE(TYPE_ISO);
- csr2 |= RX_BINTERVAL(interval);
- break;
- case USB_ENDPOINT_XFER_INT:
- csr1 |= RX_TYPE(TYPE_INT);
- csr2 |= RX_BINTERVAL(interval);
- break;
- }
-
- /*Enable QMU Done interrupt */
- mtu3_setbits(mbase, U3D_QIESR0, QMU_RX_DONE_INT(epnum));
-
- mtu3_writel(mbase, MU3D_EP_RXCR0(epnum), csr0);
- mtu3_writel(mbase, MU3D_EP_RXCR1(epnum), csr1);
- mtu3_writel(mbase, MU3D_EP_RXCR2(epnum), csr2);
-
- dev_dbg(mtu->dev, "U3D_RX%d CSR0:%#x, CSR1:%#x, CSR2:%#x\n",
- epnum, mtu3_readl(mbase, MU3D_EP_RXCR0(epnum)),
- mtu3_readl(mbase, MU3D_EP_RXCR1(epnum)),
- mtu3_readl(mbase, MU3D_EP_RXCR2(epnum)));
- }
-
- dev_dbg(mtu->dev, "csr0:%#x, csr1:%#x, csr2:%#x\n", csr0, csr1, csr2);
- dev_dbg(mtu->dev, "%s: %s, fifo-addr:%#x, fifo-size:%#x(%#x/%#x)\n",
- __func__, mep->name, mep->fifo_addr, mep->fifo_size,
- fifo_sgsz, mep->fifo_seg_size);
-
- return 0;
-}
-#else
-int mtu3_config_ep(struct mtu3 *mtu, struct mtu3_ep *mep,
- int interval, int burst, int mult)
-{
- void __iomem *mbase = mtu->mac_base;
- int epnum = mep->epnum;
-
- if (mep->is_in)
- /* Enable QMU Done interrupt */
- mtu3_setbits(mbase, U3D_QIESR0, QMU_TX_DONE_INT(epnum));
- else
- /*Enable QMU Done interrupt */
- mtu3_setbits(mbase, U3D_QIESR0, QMU_RX_DONE_INT(epnum));
- return 0;
-}
-
-#endif
-
-/* for non-ep0 */
-void mtu3_deconfig_ep(struct mtu3 *mtu, struct mtu3_ep *mep)
-{
- void __iomem *mbase = mtu->mac_base;
- int epnum = mep->epnum;
-
- if (mep->is_in) {
- mtu3_writel(mbase, MU3D_EP_TXCR0(epnum), 0);
- mtu3_writel(mbase, MU3D_EP_TXCR1(epnum), 0);
- mtu3_writel(mbase, MU3D_EP_TXCR2(epnum), 0);
- mtu3_setbits(mbase, U3D_QIECR0, QMU_TX_DONE_INT(epnum));
- } else {
- mtu3_writel(mbase, MU3D_EP_RXCR0(epnum), 0);
- mtu3_writel(mbase, MU3D_EP_RXCR1(epnum), 0);
- mtu3_writel(mbase, MU3D_EP_RXCR2(epnum), 0);
- mtu3_setbits(mbase, U3D_QIECR0, QMU_RX_DONE_INT(epnum));
- }
-
- mtu3_ep_reset(mep);
- ep_fifo_free(mep);
-
- dev_dbg(mtu->dev, "%s: %s\n", __func__, mep->name);
-}
-
-/*
- * Two scenarios:
- * 1. when device IP supports SS, the fifo of EP0, TX EPs, RX EPs
- * are separated;
- * 2. when supports only HS, the fifo is shared for all EPs, and
- * the capability registers of @EPNTXFFSZ or @EPNRXFFSZ indicate
- * the total fifo size of non-ep0, and ep0's is fixed to 64B,
- * so the total fifo size is 64B + @EPNTXFFSZ;
- * Due to the first 64B should be reserved for EP0, non-ep0's fifo
- * starts from offset 64 and are divided into two equal parts for
- * TX or RX EPs for simplification.
- */
-static void get_ep_fifo_config(struct mtu3 *mtu)
-{
- struct mtu3_fifo_info *tx_fifo;
- struct mtu3_fifo_info *rx_fifo;
- u32 fifosize;
-
- if (mtu->is_u3_ip) {
- fifosize = mtu3_readl(mtu->mac_base, U3D_CAP_EPNTXFFSZ);
- tx_fifo = &mtu->tx_fifo;
- tx_fifo->base = 0;
- tx_fifo->limit = fifosize / MTU3_EP_FIFO_UNIT;
- bitmap_zero(tx_fifo->bitmap, MTU3_FIFO_BIT_SIZE);
-
- fifosize = mtu3_readl(mtu->mac_base, U3D_CAP_EPNRXFFSZ);
- rx_fifo = &mtu->rx_fifo;
- rx_fifo->base = 0;
- rx_fifo->limit = fifosize / MTU3_EP_FIFO_UNIT;
- bitmap_zero(rx_fifo->bitmap, MTU3_FIFO_BIT_SIZE);
- mtu->slot = MTU3_U3_IP_SLOT_DEFAULT;
- } else {
- fifosize = mtu3_readl(mtu->mac_base, U3D_CAP_EPNTXFFSZ);
- tx_fifo = &mtu->tx_fifo;
- tx_fifo->base = MTU3_U2_IP_EP0_FIFO_SIZE;
- tx_fifo->limit = (fifosize / MTU3_EP_FIFO_UNIT) >> 1;
- bitmap_zero(tx_fifo->bitmap, MTU3_FIFO_BIT_SIZE);
-
- rx_fifo = &mtu->rx_fifo;
- rx_fifo->base =
- tx_fifo->base + tx_fifo->limit * MTU3_EP_FIFO_UNIT;
- rx_fifo->limit = tx_fifo->limit;
- bitmap_zero(rx_fifo->bitmap, MTU3_FIFO_BIT_SIZE);
- mtu->slot = MTU3_U2_IP_SLOT_DEFAULT;
- }
-
- dev_dbg(mtu->dev, "%s, TX: base-%d, limit-%d; RX: base-%d, limit-%d\n",
- __func__, tx_fifo->base, tx_fifo->limit,
- rx_fifo->base, rx_fifo->limit);
-}
-
-void mtu3_ep0_setup(struct mtu3 *mtu)
-{
- u32 maxpacket = mtu->g.ep0->maxpacket;
- u32 csr;
-
- dev_dbg(mtu->dev, "%s maxpacket: %d\n", __func__, maxpacket);
-
- csr = mtu3_readl(mtu->mac_base, U3D_EP0CSR);
- csr &= ~EP0_MAXPKTSZ_MSK;
- csr |= EP0_MAXPKTSZ(maxpacket);
- csr &= EP0_W1C_BITS;
- mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr);
-
- /* Enable EP0 interrupt */
- mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR | SETUPENDISR);
-}
-
-static int mtu3_mem_alloc(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
- struct mtu3_ep *ep_array;
- int in_ep_num, out_ep_num;
- u32 cap_epinfo;
- int ret;
- int i;
-
- cap_epinfo = mtu3_readl(mbase, U3D_CAP_EPINFO);
- in_ep_num = CAP_TX_EP_NUM(cap_epinfo);
- out_ep_num = CAP_RX_EP_NUM(cap_epinfo);
-
- dev_info(mtu->dev, "fifosz/epnum: Tx=%#x/%d, Rx=%#x/%d\n",
- mtu3_readl(mbase, U3D_CAP_EPNTXFFSZ), in_ep_num,
- mtu3_readl(mbase, U3D_CAP_EPNRXFFSZ), out_ep_num);
-
- /* one for ep0, another is reserved */
- mtu->num_eps = min(in_ep_num, out_ep_num) + 1;
- ep_array = kcalloc(mtu->num_eps * 2, sizeof(*ep_array), GFP_KERNEL);
- if (ep_array == NULL)
- return -ENOMEM;
-
- mtu->ep_array = ep_array;
- mtu->in_eps = ep_array;
- mtu->out_eps = &ep_array[mtu->num_eps];
- /* ep0 uses in_eps[0], out_eps[0] is reserved */
- mtu->ep0 = mtu->in_eps;
- mtu->ep0->mtu = mtu;
- mtu->ep0->epnum = 0;
-
- for (i = 1; i < mtu->num_eps; i++) {
- struct mtu3_ep *mep = mtu->in_eps + i;
-
- mep->fifo = &mtu->tx_fifo;
- mep = mtu->out_eps + i;
- mep->fifo = &mtu->rx_fifo;
- }
-
- get_ep_fifo_config(mtu);
-
- ret = mtu3_qmu_init(mtu);
- if (ret)
- kfree(mtu->ep_array);
-
- return ret;
-}
-
-static void mtu3_mem_free(struct mtu3 *mtu)
-{
- mtu3_qmu_exit(mtu);
- kfree(mtu->ep_array);
-}
-
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
-static irqreturn_t mtu3_link_isr(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
- enum usb_device_speed udev_speed;
- u32 maxpkt = 64;
- u32 link;
- u32 speed;
-
- link = mtu3_readl(mbase, U3D_DEV_LINK_INTR);
- link &= mtu3_readl(mbase, U3D_DEV_LINK_INTR_ENABLE);
- mtu3_writel(mbase, U3D_DEV_LINK_INTR, link); /* W1C */
- dev_info(mtu->dev, "=== LINK[%x] ===\n", link);
-
- if (!(link & SSUSB_DEV_SPEED_CHG_INTR))
- return IRQ_NONE;
-
- speed = SSUSB_DEV_SPEED(mtu3_readl(mbase, U3D_DEVICE_CONF));
-
- switch (speed) {
- case MTU3_SPEED_FULL:
- udev_speed = USB_SPEED_FULL;
- /*BESLCK = 4 < BESLCK_U3 = 10 < BESLDCK = 15 */
- mtu3_writel(mbase, U3D_USB20_LPM_PARAMETER, LPM_BESLDCK(0xf)
- | LPM_BESLCK(4) | LPM_BESLCK_U3(0xa));
- mtu3_setbits(mbase, U3D_POWER_MANAGEMENT,
- LPM_BESL_STALL | LPM_BESLD_STALL);
- break;
- case MTU3_SPEED_HIGH:
- udev_speed = USB_SPEED_HIGH;
- /*BESLCK = 4 < BESLCK_U3 = 10 < BESLDCK = 15 */
- mtu3_writel(mbase, U3D_USB20_LPM_PARAMETER, LPM_BESLDCK(0xf)
- | LPM_BESLCK(4) | LPM_BESLCK_U3(0xa));
- mtu3_setbits(mbase, U3D_POWER_MANAGEMENT,
- LPM_BESL_STALL | LPM_BESLD_STALL);
- break;
- case MTU3_SPEED_SUPER:
- 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;
- }
- dev_dbg(mtu->dev, "%s: %s\n", __func__, usb_speed_string(udev_speed));
- mtu3_dbg_trace(mtu->dev, "link speed %s",
- usb_speed_string(udev_speed));
-
- mtu->g.speed = udev_speed;
- mtu->g.ep0->maxpacket = maxpkt;
- mtu->ep0_state = MU3D_EP0_STATE_SETUP;
-
- if (udev_speed == USB_SPEED_UNKNOWN)
- mtu3_gadget_disconnect(mtu);
- else
- mtu3_ep0_setup(mtu);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t mtu3_u3_ltssm_isr(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
- u32 ltssm;
-
- ltssm = mtu3_readl(mbase, U3D_LTSSM_INTR);
- ltssm &= mtu3_readl(mbase, U3D_LTSSM_INTR_ENABLE);
- mtu3_writel(mbase, U3D_LTSSM_INTR, ltssm); /* W1C */
- dev_info(mtu->dev, "=== LTSSM[%x] ===\n", ltssm);
- trace_mtu3_u3_ltssm_isr(ltssm);
-
- if (ltssm & (HOT_RST_INTR | WARM_RST_INTR))
- mtu3_gadget_reset(mtu);
-
- if (ltssm & VBUS_FALL_INTR) {
- mtu3_ss_func_set(mtu, false);
- mtu3_gadget_reset(mtu);
- }
-
- if (ltssm & VBUS_RISE_INTR)
- mtu3_ss_func_set(mtu, true);
-
- if (ltssm & EXIT_U3_INTR)
- mtu3_gadget_resume(mtu);
-
- if (ltssm & ENTER_U3_INTR)
- mtu3_gadget_suspend(mtu);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu)
-{
- void __iomem *mbase = mtu->mac_base;
- u32 u2comm;
-
- u2comm = mtu3_readl(mbase, U3D_COMMON_USB_INTR);
- u2comm &= mtu3_readl(mbase, U3D_COMMON_USB_INTR_ENABLE);
- mtu3_writel(mbase, U3D_COMMON_USB_INTR, u2comm); /* W1C */
- dev_info(mtu->dev, "=== U2COMM[%x] ===\n", u2comm);
- trace_mtu3_u2_common_isr(u2comm);
-
- if (u2comm & SUSPEND_INTR)
- mtu3_gadget_suspend(mtu);
-
- if (u2comm & RESUME_INTR)
- mtu3_gadget_resume(mtu);
-
- if (u2comm & RESET_INTR)
- mtu3_gadget_reset(mtu);
-
- if (u2comm & LPM_RESUME_INTR) {
- if (!(mtu3_readl(mbase, U3D_POWER_MANAGEMENT) & LPM_HRWE))
- mtu3_setbits(mbase, U3D_USB20_MISC_CONTROL, LPM_U3_ACK_EN);
- }
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t mtu3_irq(int irq, void *data)
-{
- struct mtu3 *mtu = (struct mtu3 *)data;
- unsigned long flags;
- u32 level1;
-
- spin_lock_irqsave(&mtu->lock, flags);
-
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
- if (total_isr_debug)
- total_isr++;
-#endif
- /* U3D_LV1ISR is RU */
- level1 = mtu3_readl(mtu->mac_base, U3D_LV1ISR);
- level1 &= mtu3_readl(mtu->mac_base, U3D_LV1IER);
-//zhengzhou 0318 usb otg */
- /*if (unlikely(!mtu->softconnect) && (level1 & MAC2_INTR)) {
- dev_info(mtu->dev, "%s !softconnect MAC2_INTR\n", __func__);
- u2comm = mtu3_readl(mtu->mac_base, U3D_COMMON_USB_INTR);
- u2comm &= mtu3_readl(mtu->mac_base, U3D_COMMON_USB_INTR_ENABLE);
- mtu3_writel(mtu->mac_base, U3D_COMMON_USB_INTR, u2comm);
- goto done;
- }
-
- if (unlikely(!mtu->softconnect) && (level1 & BMU_INTR)) {
- dev_info(mtu->dev, "%s !softconnect BMU_INTR\n", __func__);
- int_status = mtu3_readl(mtu->mac_base, U3D_EPISR);
- int_status &= mtu3_readl(mtu->mac_base, U3D_EPIER);
- mtu3_writel(mtu->mac_base, U3D_EPISR, int_status);
- goto done;
- }
- */
-//zhengzhou 0318 usb otg */
- if (level1 & EP_CTRL_INTR)
- mtu3_link_isr(mtu);
-
- if (level1 & MAC2_INTR)
- mtu3_u2_common_isr(mtu);
-
- if (level1 & MAC3_INTR)
- mtu3_u3_ltssm_isr(mtu);
-
- if (level1 & BMU_INTR)
- mtu3_ep0_isr(mtu);
-
- if (level1 & QMU_INTR) {
-#ifndef CONFIG_MTU3_MD_USB_EP0_CTRL
- if (total_isr_debug)
- total_isr--;
-#endif
- mtu3_qmu_isr(mtu);
- }
-
-//done://zhengzhou 0318 usb otg */
- spin_unlock_irqrestore(&mtu->lock, flags);
-
- return IRQ_HANDLED;
-}
-#else
-static irqreturn_t mtu3_irq(int irq, void *data)
-{
- struct mtu3 *mtu = (struct mtu3 *)data;
- unsigned long flags;
- u32 level1;
-
- spin_lock_irqsave(&mtu->lock, flags);
-
- /* U3D_LV1ISR is RU */
- level1 = mtu3_readl(mtu->mac_base, U3D_LV1ISR);
- level1 &= mtu3_readl(mtu->mac_base, U3D_LV1IER);
-
- if (level1 & QMU_INTR)
- mtu3_qmu_isr(mtu);
-
- spin_unlock_irqrestore(&mtu->lock, flags);
-
- return IRQ_HANDLED;
-}
-
-#endif
-
-static int mtu3_hw_init(struct mtu3 *mtu)
-{
- u32 value;
- int ret;
-
- value = mtu3_readl(mtu->ippc_base, U3D_SSUSB_IP_TRUNK_VERS);
- mtu->hw_version = IP_TRUNK_VERS(value);
- #if 0
- mtu->gen2cp = !!(mtu->hw_version >= MTU3_TRUNK_VERS_1003);
- #else
- mtu->gen2cp = 0;
- #endif
-
- value = mtu3_readl(mtu->ippc_base, U3D_SSUSB_IP_DEV_CAP);
- mtu->is_u3_ip = !!SSUSB_IP_DEV_U3_PORT_NUM(value);
-
- dev_info(mtu->dev, "IP version 0x%x(%s IP)\n", mtu->hw_version,
- mtu->is_u3_ip ? "U3" : "U2");
-
- mtu3_device_reset(mtu);
-
- ret = mtu3_device_enable(mtu);
- if (ret) {
- dev_err(mtu->dev, "device enable failed %d\n", ret);
- return ret;
- }
-
- ret = mtu3_mem_alloc(mtu);
- if (ret)
- return -ENOMEM;
-
- mtu3_regs_init(mtu);
-
- return 0;
-}
-
-static void mtu3_hw_exit(struct mtu3 *mtu)
-{
- mtu3_device_disable(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)
-{
- struct device *dev = ssusb->dev;
- struct platform_device *pdev = to_platform_device(dev);
- struct mtu3 *mtu = NULL;
- struct resource *res;
- int ret = -ENOMEM;
-
- mtu = devm_kzalloc(dev, sizeof(struct mtu3), GFP_KERNEL);
- if (mtu == NULL)
- return -ENOMEM;
-
- mtu->irq = platform_get_irq(pdev, 0);
- if (mtu->irq < 0) {
- dev_err(dev, "fail to get irq number\n");
- return mtu->irq;
- }
- dev_info(dev, "irq %d\n", mtu->irq);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac");
- mtu->mac_base = devm_ioremap_resource(dev, res);
- if (IS_ERR(mtu->mac_base)) {
- dev_err(dev, "error mapping memory for dev mac\n");
- return PTR_ERR(mtu->mac_base);
- }
-
- spin_lock_init(&mtu->lock);
- mtu->dev = dev;
- mtu->ippc_base = ssusb->ippc_base;
- ssusb->mac_base = mtu->mac_base;
- ssusb->u3d = mtu;
- mtu->ssusb = ssusb;
- mtu->max_speed = usb_get_maximum_speed(dev);
-
- #ifdef CONFIG_MTU3_MD_USB_EP0_CTRL
- INIT_DELAYED_WORK(&mtu->forward_to_driver_work, mtu3_forward_to_driver_work);
- mtu->md_sync_data = devm_kzalloc(dev, sizeof(struct mtu3_md_sync_data), GFP_KERNEL);
- #endif
- /* check the max_speed parameter */
- switch (mtu->max_speed) {
- 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 SSP */
- mtu->max_speed = USB_SPEED_SUPER_PLUS;
- break;
- }
-
- dev_dbg(dev, "mac_base=0x%p, ippc_base=0x%p\n",
- mtu->mac_base, mtu->ippc_base);
-
- ret = mtu3_hw_init(mtu);
- if (ret) {
- dev_err(dev, "mtu3 hw init failed:%d\n", ret);
- 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);
- goto irq_err;
- }
-
- device_init_wakeup(dev, true);
-
- ret = mtu3_gadget_setup(mtu);
- if (ret) {
- dev_err(dev, "mtu3 gadget init failed:%d\n", ret);
- goto gadget_err;
- }
- mtu3_usb_vbus_detect_init(mtu);
- /* init as host mode, power down device IP for power saving */
- if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG)
- mtu3_stop(mtu);
-
- ssusb_dev_debugfs_init(ssusb);
-
- dev_dbg(dev, " %s() done...\n", __func__);
-
- return 0;
-
-gadget_err:
- device_init_wakeup(dev, false);
-
-dma_mask_err:
-irq_err:
- mtu3_hw_exit(mtu);
- ssusb->u3d = NULL;
- dev_err(dev, " %s() fail...\n", __func__);
-
- return ret;
-}
-
-void ssusb_gadget_exit(struct ssusb_mtk *ssusb)
-{
- struct mtu3 *mtu = ssusb->u3d;
-
- mtu3_gadget_cleanup(mtu);
- device_init_wakeup(ssusb->dev, false);
- mtu3_hw_exit(mtu);
-}
diff --git a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_dr_1.c b/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_dr_1.c
deleted file mode 100755
index 3a3ef38..0000000
--- a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_dr_1.c
+++ /dev/null
@@ -1,612 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * mtu3_dr.c - dual role switch and host glue layer
- *
- * Copyright (C) 2016 MediaTek Inc.
- *
- * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
- */
-
-#include <linux/usb/role.h>
-#include <linux/of_platform.h>
-
-#include "mtu3.h"
-#include "mtu3_dr.h"
-#include "mtu3_debug.h"
-
-#define USB2_PORT 2
-#define USB3_PORT 3
-
-enum mtu3_vbus_id_state {
- MTU3_ID_FLOAT = 1,
- MTU3_ID_GROUND,
- MTU3_VBUS_OFF,
- MTU3_VBUS_VALID,
-};
-
-static char *mailbox_state_string(enum mtu3_vbus_id_state state)
-{
- switch (state) {
- case MTU3_ID_FLOAT:
- return "ID_FLOAT";
- case MTU3_ID_GROUND:
- return "ID_GROUND";
- case MTU3_VBUS_OFF:
- return "VBUS_OFF";
- case MTU3_VBUS_VALID:
- return "VBUS_VALID";
- default:
- return "UNKNOWN";
- }
-}
-
-static void toggle_opstate(struct ssusb_mtk *ssusb)
-{
- dev_info(ssusb->dev, "%s\n", __func__);
- //if (!ssusb->otg_switch.is_u3_drd) {//zhengzhou 0318 usb otg */
- if (!ssusb->otg_switch.is_u3_drd) {
- mtu3_setbits(ssusb->mac_base, U3D_DEVICE_CONTROL, DC_SESSION);
- mtu3_setbits(ssusb->mac_base, U3D_POWER_MANAGEMENT, SOFT_CONN);
- }
- //}
-}
-
-/* only port0 supports dual-role mode */
-static int ssusb_port0_switch(struct ssusb_mtk *ssusb,
- int version, bool tohost)
-{
- void __iomem *ibase = ssusb->ippc_base;
- u32 value;
-
- dev_dbg(ssusb->dev, "%s (switch u%d port0 to %s)\n", __func__,
- version, tohost ? "host" : "device");
-
- if (version == USB2_PORT) {
- /* 1. power off and disable u2 port0 */
- value = mtu3_readl(ibase, SSUSB_U2_CTRL(0));
- value |= SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_DIS;
- mtu3_writel(ibase, SSUSB_U2_CTRL(0), value);
-
- /* 2. power on, enable u2 port0 and select its mode */
- value = mtu3_readl(ibase, SSUSB_U2_CTRL(0));
- value &= ~(SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_DIS);
- value = tohost ? (value | SSUSB_U2_PORT_HOST_SEL) :
- (value & (~SSUSB_U2_PORT_HOST_SEL));
- mtu3_writel(ibase, SSUSB_U2_CTRL(0), value);
- } else {
- /* 1. power off and disable u3 port0 */
- value = mtu3_readl(ibase, SSUSB_U3_CTRL(0));
- value |= SSUSB_U3_PORT_PDN | SSUSB_U3_PORT_DIS;
- mtu3_writel(ibase, SSUSB_U3_CTRL(0), value);
-
- /* 2. power on, enable u3 port0 and select its mode */
- value = mtu3_readl(ibase, SSUSB_U3_CTRL(0));
- value &= ~(SSUSB_U3_PORT_PDN | SSUSB_U3_PORT_DIS);
- value = tohost ? (value | SSUSB_U3_PORT_HOST_SEL) :
- (value & (~SSUSB_U3_PORT_HOST_SEL));
- mtu3_writel(ibase, SSUSB_U3_CTRL(0), value);
- }
-
- return 0;
-}
-
-static void ssusb_ip_sleep(struct ssusb_mtk *ssusb)
-{
- void __iomem *ibase = ssusb->ippc_base;
-
- /* Set below sequence to avoid power leakage */
- mtu3_setbits(ibase, SSUSB_U3_CTRL(0),
- (SSUSB_U3_PORT_DIS | SSUSB_U3_PORT_PDN));
- 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);
- mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL1, SSUSB_IP_HOST_PDN);
- mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
- udelay(50);
- mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);
-}
-
-static void switch_port_to_on(struct ssusb_mtk *ssusb, bool on)
-{
- dev_dbg(ssusb->dev, "%s\n", __func__);
-
- if (on) {
- //ssusb_clks_enable(ssusb);//zhengzhou 0318 usb otg */
- ssusb_phy_power_on(ssusb);
- ssusb_ip_sw_reset(ssusb);
- } else {
- ssusb_ip_sleep(ssusb);
- ssusb_phy_power_off(ssusb);
- //ssusb_clks_disable(ssusb);//zhengzhou 0318 usb otg */
- }
-}
-
-static void switch_port_to_host(struct ssusb_mtk *ssusb)
-{
- u32 check_clk = 0;
-
- dev_dbg(ssusb->dev, "%s\n", __func__);
-
- ssusb_port0_switch(ssusb, USB2_PORT, true);
-
- if (ssusb->otg_switch.is_u3_drd) {
- ssusb_port0_switch(ssusb, USB3_PORT, true);
- check_clk = SSUSB_U3_MAC_RST_B_STS;
- }
-
- ssusb_check_clocks(ssusb, check_clk);
-
- /* after all clocks are stable */
- toggle_opstate(ssusb);
-}
-
-static void switch_port_to_device(struct ssusb_mtk *ssusb)
-{
- u32 check_clk = 0;
-
- dev_info(ssusb->dev, "%s\n", __func__);
-
- ssusb_port0_switch(ssusb, USB2_PORT, false);
-
- if (ssusb->otg_switch.is_u3_drd) {
- ssusb_port0_switch(ssusb, USB3_PORT, false);
- check_clk = SSUSB_U3_MAC_RST_B_STS;
- }
-
- ssusb_check_clocks(ssusb, check_clk);
-}
-
-int ssusb_set_vbus(struct otg_switch_mtk *otg_sx, int is_on)
-{
- struct ssusb_mtk *ssusb =
- container_of(otg_sx, struct ssusb_mtk, otg_switch);
- struct regulator *vbus = otg_sx->vbus;
- int ret;
-
- /* vbus is optional */
- if (!vbus)
- return 0;
-
- dev_dbg(ssusb->dev, "%s: turn %s\n", __func__, is_on ? "on" : "off");
-
- if (is_on) {
- ret = regulator_enable(vbus);
- if (ret) {
- dev_err(ssusb->dev, "vbus regulator enable failed\n");
- return ret;
- }
- } else {
- regulator_disable(vbus);
- }
-
- return 0;
-}
-
-static void ssusb_gadget_disconnect(struct mtu3 *mtu)
-{
- /* notify gadget driver */
- if (mtu->g.speed == USB_SPEED_UNKNOWN)
- return;
-
- if (mtu->gadget_driver && mtu->gadget_driver->disconnect) {
- mtu->gadget_driver->disconnect(&mtu->g);
- mtu->g.speed = USB_SPEED_UNKNOWN;
- }
-
- usb_gadget_set_state(&mtu->g, USB_STATE_NOTATTACHED);
-}
-
-/*
- * switch to host: -> MTU3_VBUS_OFF --> MTU3_ID_GROUND
- * switch to device: -> MTU3_ID_FLOAT --> MTU3_VBUS_VALID
- */
-static void ssusb_set_mailbox(struct otg_switch_mtk *otg_sx,
- enum mtu3_vbus_id_state status)
-{
- struct ssusb_mtk *ssusb =
- container_of(otg_sx, struct ssusb_mtk, otg_switch);
- struct mtu3 *mtu = ssusb->u3d;
- unsigned long flags;
-
- dev_info(ssusb->dev, "mailbox %s\n", mailbox_state_string(status));
- mtu3_dbg_trace(ssusb->dev, "mailbox %s", mailbox_state_string(status));
-
- switch (status) {
- case MTU3_ID_GROUND:
- switch_port_to_host(ssusb);
- ssusb_set_vbus(otg_sx, 1);
- ssusb->is_host = true;
- otg_sx->sw_state |= MTU3_SW_ID_GROUND;
- break;
- case MTU3_ID_FLOAT:
- ssusb->is_host = false;
- ssusb_set_vbus(otg_sx, 0);
- switch_port_to_device(ssusb);
- otg_sx->sw_state &= ~MTU3_SW_ID_GROUND;
- break;
- case MTU3_VBUS_OFF:
- /* killing any outstanding requests */
- spin_lock_irqsave(&mtu->lock, flags);
- mtu3_nuke_all_ep(mtu);
- spin_unlock_irqrestore(&mtu->lock, flags);
- mtu3_stop(mtu);
- pm_relax(ssusb->dev);
- //ssusb_set_force_vbus(ssusb, false);//zhengzhou 0318 usb otg */
- ssusb_gadget_disconnect(mtu);
- otg_sx->sw_state &= ~MTU3_SW_VBUS_VALID;
- break;
- case MTU3_VBUS_VALID:
- //ssusb_set_force_vbus(ssusb, true);//zhengzhou 0318 usb otg */
- /* avoid suspend when works as device */
- pm_stay_awake(ssusb->dev);
- mtu3_start(mtu);
- otg_sx->sw_state |= MTU3_SW_VBUS_VALID;
- break;
- default:
- dev_err(ssusb->dev, "invalid state\n");
- }
-}
-
-static void ssusb_id_work(struct work_struct *work)
-{
- struct otg_switch_mtk *otg_sx =
- container_of(work, struct otg_switch_mtk, id_work);
- //zhengzhou 0318 usb otg start*/
- struct ssusb_mtk *ssusb =
- container_of(otg_sx, struct ssusb_mtk, otg_switch);
-
- if (otg_sx->id_event){
- mdelay(500);
- pm_stay_awake(ssusb->dev);
- switch_port_to_on(ssusb, true);
- ssusb_host_enable(ssusb);
- /* register host driver */
- of_platform_populate(ssusb->dev->of_node,
- NULL, NULL, ssusb->dev);
- ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_HOST);
- ssusb_set_mailbox(otg_sx, MTU3_ID_GROUND);
- }
- else {
- /* FIXME: debounce time for xhci finish disconnection */
- //mdelay(200);
- ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_DEVICE);
- of_platform_depopulate(ssusb->dev);
- ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT);
- switch_port_to_on(ssusb, false);
- pm_relax(ssusb->dev);
- }
- //zhengzhou 0318 usb otg end*/
-}
-
-static void ssusb_vbus_work(struct work_struct *work)
-{
- struct otg_switch_mtk *otg_sx =
- container_of(work, struct otg_switch_mtk, vbus_work);
- //zhengzhou 0318 usb otg start*/
- struct ssusb_mtk *ssusb =
- container_of(otg_sx, struct ssusb_mtk, otg_switch);
-
- if (otg_sx->vbus_event) {
- msleep(500);
- switch_port_to_on(ssusb, true);
- switch_port_to_device(ssusb);
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_VALID);
- }
- else {
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_OFF);
- switch_port_to_on(ssusb, false);
- }
- //zhengzhou 0318 usb otg end*/
-}
-
-/*
- * @ssusb_id_notifier is called in atomic context, but @ssusb_set_mailbox
- * may sleep, so use work queue here
- */
-static int ssusb_id_notifier(struct notifier_block *nb,
- unsigned long event, void *ptr)
-{
- struct otg_switch_mtk *otg_sx =
- container_of(nb, struct otg_switch_mtk, id_nb);
-
- otg_sx->id_event = event;
- schedule_work(&otg_sx->id_work);
-
- return NOTIFY_DONE;
-}
-
-static int ssusb_vbus_notifier(struct notifier_block *nb,
- unsigned long event, void *ptr)
-{
- struct otg_switch_mtk *otg_sx =
- container_of(nb, struct otg_switch_mtk, vbus_nb);
-
- otg_sx->vbus_event = event;
- schedule_work(&otg_sx->vbus_work);
-
- return NOTIFY_DONE;
-}
-
-static int ssusb_extcon_register(struct otg_switch_mtk *otg_sx)
-{
- struct ssusb_mtk *ssusb =
- container_of(otg_sx, struct ssusb_mtk, otg_switch);
- struct extcon_dev *edev = otg_sx->edev;
- int ret;
-
- /* extcon is optional */
- if (!edev)
- return 0;
-
- otg_sx->vbus_nb.notifier_call = ssusb_vbus_notifier;
- ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB,
- &otg_sx->vbus_nb);
- if (ret < 0) {
- dev_err(ssusb->dev, "failed to register notifier for USB\n");
- return ret;
- }
-
- otg_sx->id_nb.notifier_call = ssusb_id_notifier;
- ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB_HOST,
- &otg_sx->id_nb);
- if (ret < 0) {
- dev_err(ssusb->dev, "failed to register notifier for USB-HOST\n");
- return ret;
- }
-
- dev_dbg(ssusb->dev, "EXTCON_USB: %d, EXTCON_USB_HOST: %d\n",
- extcon_get_state(edev, EXTCON_USB),
- extcon_get_state(edev, EXTCON_USB_HOST));
-
- /* default as host, switch to device mode if needed */
- if (extcon_get_state(edev, EXTCON_USB_HOST) == false) {
- of_platform_depopulate(ssusb->dev); //zhengzhou 0318 usb otg */
- ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT);
- }
- if (extcon_get_state(edev, EXTCON_USB) == true)
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_VALID);
-
- return 0;
-}
-
-/*
- * We provide an interface via debugfs to switch between host and device modes
- * depending on user input.
- * This is useful in special cases, such as uses TYPE-A receptacle but also
- * wants to support dual-role mode.
- */
-void ssusb_mode_switch(struct ssusb_mtk *ssusb, int to_host)
-{
- struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
-
- if (to_host) {
- ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_HOST);
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_OFF);
- ssusb_set_mailbox(otg_sx, MTU3_ID_GROUND);
- } else {
- ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_DEVICE);
- ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT);
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_VALID);
- }
-}
-
-void ssusb_set_force_mode(struct ssusb_mtk *ssusb,
- enum mtu3_dr_force_mode mode)
-{
- u32 value;
-
- value = mtu3_readl(ssusb->ippc_base, SSUSB_U2_CTRL(0));
- switch (mode) {
- case MTU3_DR_FORCE_DEVICE:
- value |= SSUSB_U2_PORT_FORCE_IDDIG | SSUSB_U2_PORT_RG_IDDIG;
- break;
- case MTU3_DR_FORCE_HOST:
- value |= SSUSB_U2_PORT_FORCE_IDDIG;
- value &= ~SSUSB_U2_PORT_RG_IDDIG;
- break;
- case MTU3_DR_FORCE_NONE:
- value &= ~(SSUSB_U2_PORT_FORCE_IDDIG | SSUSB_U2_PORT_RG_IDDIG);
- break;
- default:
- return;
- }
- mtu3_writel(ssusb->ippc_base, SSUSB_U2_CTRL(0), value);
-}
-
-static int ssusb_role_sw_set(struct device *dev, enum usb_role role)
-{
- struct ssusb_mtk *ssusb = dev_get_drvdata(dev);
- struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
- bool id_event, vbus_event;
-
- dev_info(dev, "role_sw_set role %d\n", role);
-
- otg_sx->latest_role = role;
-
- if (otg_sx->op_mode != MTU3_DR_OPERATION_NORMAL) {
- dev_info(dev, "op_mode %d, skip set role\n", otg_sx->op_mode);
- return 0;
- }
-
- id_event = (role == USB_ROLE_HOST);
- vbus_event = (role == USB_ROLE_DEVICE);
-
- if (!!(otg_sx->sw_state & MTU3_SW_VBUS_VALID) ^ vbus_event) {
- if (vbus_event) {
- if (ssusb->clk_mgr) {
- switch_port_to_on(ssusb, true);
- switch_port_to_device(ssusb);
- }
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_VALID);
- } else {
- ssusb_set_mailbox(otg_sx, MTU3_VBUS_OFF);
- if (ssusb->clk_mgr)
- switch_port_to_on(ssusb, false);
- }
- }
-
- if (!!(otg_sx->sw_state & MTU3_SW_ID_GROUND) ^ id_event) {
- if (id_event) {
- if (ssusb->clk_mgr) {
- pm_stay_awake(ssusb->dev);
- switch_port_to_on(ssusb, true);
- ssusb_host_enable(ssusb);
- /* register host driver */
- of_platform_populate(dev->of_node,
- NULL, NULL, dev);
- }
- ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_HOST);
- ssusb_set_mailbox(otg_sx, MTU3_ID_GROUND);
- } else {
- /* FIXME: debounce time for xhci finish disconnection */
- mdelay(200);
- ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_DEVICE);
- if (ssusb->clk_mgr) {
- /* unregister host driver */
- of_platform_depopulate(dev);
- ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT);
- switch_port_to_on(ssusb, false);
- pm_relax(ssusb->dev);
- } else
- ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT);
- }
- }
-
- return 0;
-}
-
-static enum usb_role ssusb_role_sw_get(struct device *dev)
-{
- struct ssusb_mtk *ssusb = dev_get_drvdata(dev);
- enum usb_role role;
-
- role = ssusb->is_host ? USB_ROLE_HOST : USB_ROLE_DEVICE;
-
- return role;
-}
-
-static int ssusb_role_sw_register(struct otg_switch_mtk *otg_sx)
-{
- struct usb_role_switch_desc role_sx_desc = { 0 };
- struct ssusb_mtk *ssusb =
- container_of(otg_sx, struct ssusb_mtk, otg_switch);
-
- if (!otg_sx->role_sw_used)
- return 0;
-
- role_sx_desc.set = ssusb_role_sw_set;
- role_sx_desc.get = ssusb_role_sw_get;
- otg_sx->role_sw = usb_role_switch_register(ssusb->dev, &role_sx_desc);
-
- if (IS_ERR(otg_sx->role_sw))
- return PTR_ERR(otg_sx->role_sw);
-
- /* default to role none */
- ssusb_role_sw_set(ssusb->dev, USB_ROLE_NONE);
-
- return 0;
-}
-
-
-static ssize_t cmode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ssusb_mtk *ssusb = dev_get_drvdata(dev);
- struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
- enum usb_role role = otg_sx->latest_role;
- int mode;
-
- if (kstrtoint(buf, 10, &mode))
- return -EINVAL;
-
- dev_info(dev, "store cmode %d op_mode %d\n", mode, otg_sx->op_mode);
-
- if (otg_sx->op_mode != mode) {
- /* set switch role */
- switch (mode) {
- case MTU3_DR_OPERATION_NONE:
- otg_sx->latest_role = USB_ROLE_NONE;
- break;
- case MTU3_DR_OPERATION_NORMAL:
- /* switch usb role to latest role */
- break;
- case MTU3_DR_OPERATION_HOST:
- otg_sx->latest_role = USB_ROLE_HOST;
- break;
- case MTU3_DR_OPERATION_DEVICE:
- otg_sx->latest_role = USB_ROLE_DEVICE;
- break;
- default:
- return -EINVAL;
- }
- /* switch operation mode to normal temporarily */
- otg_sx->op_mode = MTU3_DR_OPERATION_NORMAL;
- /* switch usb role */
- ssusb_role_sw_set(ssusb->dev, otg_sx->latest_role);
- /* update operation mode */
- otg_sx->op_mode = mode;
- /* restore role */
- otg_sx->latest_role = role;
- }
-
- return count;
-}
-
-static ssize_t cmode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ssusb_mtk *ssusb = dev_get_drvdata(dev);
- struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
-
- return sprintf(buf, "%d\n", otg_sx->op_mode);
-}
-static DEVICE_ATTR_RW(cmode);
-
-static struct attribute *ssusb_dr_attrs[] = {
- &dev_attr_cmode.attr,
- NULL
-};
-
-static const struct attribute_group ssusb_dr_group = {
- .attrs = ssusb_dr_attrs,
-};
-
-int ssusb_otg_switch_init(struct ssusb_mtk *ssusb)
-{
- struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
- int ret = 0;
-
- INIT_WORK(&otg_sx->id_work, ssusb_id_work);
- INIT_WORK(&otg_sx->vbus_work, ssusb_vbus_work);
-
- /* default as host, update state */
- otg_sx->sw_state = ssusb->is_host ?
- MTU3_SW_ID_GROUND : MTU3_SW_VBUS_VALID;
- /* initial operation mode */
- otg_sx->op_mode = MTU3_DR_OPERATION_NORMAL;
-
- ret = sysfs_create_group(&ssusb->dev->kobj, &ssusb_dr_group);
- if (ret)
- dev_info(ssusb->dev, "error creating sysfs attributes\n");
-
- if (otg_sx->manual_drd_enabled)
- ssusb_dr_debugfs_init(ssusb);
- else if (otg_sx->role_sw_used)
- ret = ssusb_role_sw_register(otg_sx);
- else
- ret = ssusb_extcon_register(otg_sx);
-
- return ret;
-}
-
-void ssusb_otg_switch_exit(struct ssusb_mtk *ssusb)
-{
- struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
-
- cancel_work_sync(&otg_sx->id_work);
- cancel_work_sync(&otg_sx->vbus_work);
- usb_role_switch_unregister(otg_sx->role_sw);
- sysfs_remove_group(&ssusb->dev->kobj, &ssusb_dr_group);
-}
diff --git a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_plat.c b/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_plat.c
index 3005550..7c5bd7a 100644
--- a/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_plat.c
+++ b/src/kernel/linux/v4.19/drivers/usb/mtu3/mtu3_plat.c
@@ -165,19 +165,24 @@
int ssusb_phy_power_on(struct ssusb_mtk *ssusb)
{
int i;
- int ret;
+ int ret = 0;
+ mutex_lock(&ssusb->mutex);
+ if (ssusb->power_status)
+ goto power_on_phy;
for (i = 0; i < ssusb->num_phys; i++) {
ret = phy_power_on(ssusb->phys[i]);
if (ret)
goto power_off_phy;
}
- return 0;
+ ssusb->power_status = true;
+ goto power_on_phy;
power_off_phy:
for (; i > 0; i--)
phy_power_off(ssusb->phys[i - 1]);
-
+power_on_phy:
+ mutex_unlock(&ssusb->mutex);
return ret;
}
@@ -185,8 +190,15 @@
{
unsigned int i;
+ mutex_lock(&ssusb->mutex);
+ if (!ssusb->power_status)
+ goto power_off_phy;
+
for (i = 0; i < ssusb->num_phys; i++)
phy_power_off(ssusb->phys[i]);
+ ssusb->power_status = false;
+power_off_phy:
+ mutex_unlock(&ssusb->mutex);
}
int ssusb_clks_enable(struct ssusb_mtk *ssusb)
@@ -708,6 +720,11 @@
pm_runtime_get_sync(dev);
device_enable_async_suspend(dev);
+ mutex_init(&ssusb->mutex);
+ mutex_lock(&ssusb->mutex);
+ ssusb->power_status = false;
+ mutex_unlock(&ssusb->mutex);
+
ret = ssusb_rscs_init(ssusb);
if (ret)
goto comm_init_err;