diff options
| -rw-r--r-- | drivers/usb/mtu3/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/usb/mtu3/Makefile | 11 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3.h | 47 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_core.c | 42 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_dr.h | 85 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_host.c | 288 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_plat.c | 289 |
7 files changed, 691 insertions, 80 deletions
diff --git a/drivers/usb/mtu3/Kconfig b/drivers/usb/mtu3/Kconfig index 54dadee36f4d..59e3f6fa0da0 100644 --- a/drivers/usb/mtu3/Kconfig +++ b/drivers/usb/mtu3/Kconfig @@ -4,6 +4,7 @@ config USB_MTU3 tristate "MediaTek USB3 Dual Role controller" depends on (USB || USB_GADGET) && HAS_DMA depends on ARCH_MEDIATEK || COMPILE_TEST + select USB_XHCI_MTK if USB_SUPPORT && USB_XHCI_HCD help Say Y or M here if your system runs on MediaTek SoCs with Dual Role SuperSpeed USB controller. You can select usb @@ -18,8 +19,16 @@ config USB_MTU3 if USB_MTU3 choice bool "MTU3 Mode Selection" + default USB_MTU3_HOST if (USB && !USB_GADGET) default USB_MTU3_GADGET if (!USB && USB_GADGET) +config USB_MTU3_HOST + bool "Host only mode" + depends on USB=y || USB=USB_MTU3 + help + Select this when you want to use MTU3 in host mode only, + thereby the gadget feature will be regressed. + config USB_MTU3_GADGET bool "Gadget only mode" depends on USB_GADGET=y || USB_GADGET=USB_MTU3 diff --git a/drivers/usb/mtu3/Makefile b/drivers/usb/mtu3/Makefile index 532c2570c58b..41e45e99ee6b 100644 --- a/drivers/usb/mtu3/Makefile +++ b/drivers/usb/mtu3/Makefile @@ -1,2 +1,11 @@ obj-$(CONFIG_USB_MTU3) += mtu3.o -mtu3-y := mtu3_plat.o mtu3_core.o mtu3_gadget_ep0.o mtu3_gadget.o mtu3_qmu.o + +mtu3-y := mtu3_plat.o + +ifneq ($(filter y,$(CONFIG_USB_MTU3_HOST)),) + mtu3-y += mtu3_host.o +endif + +ifneq ($(filter y,$(CONFIG_USB_MTU3_GADGET)),) + mtu3-y += mtu3_core.o mtu3_gadget_ep0.o mtu3_gadget.o mtu3_qmu.o +endif diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h index 41a04732a274..a7c0ce873c44 100644 --- a/drivers/usb/mtu3/mtu3.h +++ b/drivers/usb/mtu3/mtu3.h @@ -172,6 +172,40 @@ struct mtu3_gpd_ring { struct qmu_gpd *enqueue; struct qmu_gpd *dequeue; }; +/** + * @mac_base: register base address of device MAC, exclude xHCI's + * @ippc_base: register base address of ip port controller interface (IPPC) + * @vusb33: usb3.3V shared by device/host IP + * @sys_clk: system clock of mtu3, shared by device/host IP + * @dr_mode: works in which mode: + * host only, device only or dual-role mode + * @u2_ports: number of usb2.0 host ports + * @u3_ports: number of usb3.0 host ports + * @wakeup_en: it's true when supports remote wakeup in host mode + * @wk_deb_p0: port0's wakeup debounce clock + * @wk_deb_p1: it's optional, and depends on port1 is supported or not + */ +struct ssusb_mtk { + struct device *dev; + struct mtu3 *u3d; + void __iomem *mac_base; + void __iomem *ippc_base; + struct phy **phys; + int num_phys; + /* common power & clock */ + struct regulator *vusb33; + struct clk *sys_clk; + /* otg */ + enum usb_dr_mode dr_mode; + bool is_host; + int u2_ports; + int u3_ports; + /* usb wakeup for host mode */ + bool wakeup_en; + struct clk *wk_deb_p0; + struct clk *wk_deb_p1; + struct regmap *pericfg; +}; /** * @fifo_size: it is (@slot + 1) * @fifo_seg_size @@ -210,6 +244,11 @@ struct mtu3_request { int epnum; }; +static inline struct ssusb_mtk *dev_to_ssusb(struct device *dev) +{ + return dev_get_drvdata(dev); +} + /** * struct mtu3 - device driver instance data. * @slot: MTU3_U2_IP_SLOT_DEFAULT for U2 IP only, @@ -222,12 +261,10 @@ struct mtu3_request { */ struct mtu3 { spinlock_t lock; + struct ssusb_mtk *ssusb; struct device *dev; void __iomem *mac_base; void __iomem *ippc_base; - struct phy *phy; - struct regulator *vusb33; - struct clk *sys_clk; int irq; struct mtu3_fifo_info tx_fifo; @@ -320,7 +357,7 @@ static inline void mtu3_clrbits(void __iomem *base, u32 offset, u32 bits) writel((tmp & ~(bits)), addr); } -int ssusb_check_clocks(struct mtu3 *mtu, u32 ex_clks); +int ssusb_check_clocks(struct ssusb_mtk *ssusb, u32 ex_clks); struct usb_request *mtu3_alloc_request(struct usb_ep *ep, gfp_t gfp_flags); void mtu3_free_request(struct usb_ep *ep, struct usb_request *req); void mtu3_req_complete(struct mtu3_ep *mep, @@ -341,8 +378,6 @@ void mtu3_gadget_reset(struct mtu3 *mtu); void mtu3_gadget_suspend(struct mtu3 *mtu); void mtu3_gadget_resume(struct mtu3 *mtu); void mtu3_gadget_disconnect(struct mtu3 *mtu); -int ssusb_gadget_init(struct mtu3 *mtu); -void ssusb_gadget_exit(struct mtu3 *mtu); irqreturn_t mtu3_ep0_isr(struct mtu3 *mtu); extern const struct usb_ep_ops mtu3_ep0_ops; diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index f9817ad53e3c..2eef9727312c 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -116,7 +116,7 @@ static int mtu3_device_enable(struct mtu3 *mtu) SSUSB_U2_PORT_HOST_SEL)); mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); - return ssusb_check_clocks(mtu, check_clk); + return ssusb_check_clocks(mtu->ssusb, check_clk); } static void mtu3_device_disable(struct mtu3 *mtu) @@ -765,11 +765,38 @@ static void mtu3_hw_exit(struct mtu3 *mtu) /*-------------------------------------------------------------------------*/ -int ssusb_gadget_init(struct mtu3 *mtu) +int ssusb_gadget_init(struct ssusb_mtk *ssusb) { - struct device *dev = mtu->dev; - int ret; + 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 -ENODEV; + } + 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); /* check the max_speed parameter */ @@ -820,14 +847,17 @@ gadget_err: irq_err: mtu3_hw_exit(mtu); + ssusb->u3d = NULL; dev_err(dev, " %s() fail...\n", __func__); return ret; } -void ssusb_gadget_exit(struct mtu3 *mtu) +void ssusb_gadget_exit(struct ssusb_mtk *ssusb) { + struct mtu3 *mtu = ssusb->u3d; + mtu3_gadget_cleanup(mtu); - device_init_wakeup(mtu->dev, false); + device_init_wakeup(ssusb->dev, false); mtu3_hw_exit(mtu); } diff --git a/drivers/usb/mtu3/mtu3_dr.h b/drivers/usb/mtu3/mtu3_dr.h new file mode 100644 index 000000000000..07066f4093ab --- /dev/null +++ b/drivers/usb/mtu3/mtu3_dr.h @@ -0,0 +1,85 @@ +/* + * mtu3_dr.h - dual role switch and host glue layer header + * + * 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. + * + */ + +#ifndef _MTU3_DR_H_ +#define _MTU3_DR_H_ + +#if IS_ENABLED(CONFIG_USB_MTU3_HOST) + +int ssusb_host_init(struct ssusb_mtk *ssusb, struct device_node *parent_dn); +void ssusb_host_exit(struct ssusb_mtk *ssusb); +int ssusb_wakeup_of_property_parse(struct ssusb_mtk *ssusb, + struct device_node *dn); +int ssusb_host_enable(struct ssusb_mtk *ssusb); +int ssusb_host_disable(struct ssusb_mtk *ssusb, bool suspend); +int ssusb_wakeup_enable(struct ssusb_mtk *ssusb); +void ssusb_wakeup_disable(struct ssusb_mtk *ssusb); + +#else + +static inline int ssusb_host_init(struct ssusb_mtk *ssusb, + + struct device_node *parent_dn) +{ + return 0; +} + +static inline void ssusb_host_exit(struct ssusb_mtk *ssusb) +{} + +static inline int ssusb_wakeup_of_property_parse( + struct ssusb_mtk *ssusb, struct device_node *dn) +{ + return 0; +} + +static inline int ssusb_host_enable(struct ssusb_mtk *ssusb) +{ + return 0; +} + +static inline int ssusb_host_disable(struct ssusb_mtk *ssusb, bool suspend) +{ + return 0; +} + +static inline int ssusb_wakeup_enable(struct ssusb_mtk *ssusb) +{ + return 0; +} + +static inline void ssusb_wakeup_disable(struct ssusb_mtk *ssusb) +{} + +#endif + + +#if IS_ENABLED(CONFIG_USB_MTU3_GADGET) +int ssusb_gadget_init(struct ssusb_mtk *ssusb); +void ssusb_gadget_exit(struct ssusb_mtk *ssusb); +#else +static inline int ssusb_gadget_init(struct ssusb_mtk *ssusb) +{ + return 0; +} + +static inline void ssusb_gadget_exit(struct ssusb_mtk *ssusb) +{} +#endif + +#endif /* _MTU3_DR_H_ */ diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c new file mode 100644 index 000000000000..361d6d844ce5 --- /dev/null +++ b/drivers/usb/mtu3/mtu3_host.c @@ -0,0 +1,288 @@ +/* + * mtu3_dr.c - dual role switch and host glue layer + * + * 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/clk.h> +#include <linux/iopoll.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/mfd/syscon.h> +#include <linux/of_device.h> +#include <linux/regmap.h> + +#include "mtu3.h" +#include "mtu3_dr.h" + +#define PERI_WK_CTRL1 0x404 +#define UWK_CTL1_IS_C(x) (((x) & 0xf) << 26) +#define UWK_CTL1_IS_E BIT(25) +#define UWK_CTL1_IDDIG_C(x) (((x) & 0xf) << 11) /* cycle debounce */ +#define UWK_CTL1_IDDIG_E BIT(10) /* enable debounce */ +#define UWK_CTL1_IDDIG_P BIT(9) /* polarity */ +#define UWK_CTL1_IS_P BIT(6) /* polarity for ip sleep */ + +/* + * ip-sleep wakeup mode: + * all clocks can be turn off, but power domain should be kept on + */ +static void ssusb_wakeup_ip_sleep_en(struct ssusb_mtk *ssusb) +{ + u32 tmp; + struct regmap *pericfg = ssusb->pericfg; + + regmap_read(pericfg, PERI_WK_CTRL1, &tmp); + tmp &= ~UWK_CTL1_IS_P; + tmp &= ~(UWK_CTL1_IS_C(0xf)); + tmp |= UWK_CTL1_IS_C(0x8); + regmap_write(pericfg, PERI_WK_CTRL1, tmp); + regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_IS_E); + + regmap_read(pericfg, PERI_WK_CTRL1, &tmp); + dev_dbg(ssusb->dev, "%s(): WK_CTRL1[P6,E25,C26:29]=%#x\n", + __func__, tmp); +} + +static void ssusb_wakeup_ip_sleep_dis(struct ssusb_mtk *ssusb) +{ + u32 tmp; + + regmap_read(ssusb->pericfg, PERI_WK_CTRL1, &tmp); + tmp &= ~UWK_CTL1_IS_E; + regmap_write(ssusb->pericfg, PERI_WK_CTRL1, tmp); +} + +int ssusb_wakeup_of_property_parse(struct ssusb_mtk *ssusb, + struct device_node *dn) +{ + struct device *dev = ssusb->dev; + + /* + * Wakeup function is optional, so it is not an error if this property + * does not exist, and in such case, no need to get relative + * properties anymore. + */ + ssusb->wakeup_en = of_property_read_bool(dn, "mediatek,enable-wakeup"); + if (!ssusb->wakeup_en) + return 0; + + ssusb->wk_deb_p0 = devm_clk_get(dev, "wakeup_deb_p0"); + if (IS_ERR(ssusb->wk_deb_p0)) { + dev_err(dev, "fail to get wakeup_deb_p0\n"); + return PTR_ERR(ssusb->wk_deb_p0); + } + + if (of_property_read_bool(dn, "wakeup_deb_p1")) { + ssusb->wk_deb_p1 = devm_clk_get(dev, "wakeup_deb_p1"); + if (IS_ERR(ssusb->wk_deb_p1)) { + dev_err(dev, "fail to get wakeup_deb_p1\n"); + return PTR_ERR(ssusb->wk_deb_p1); + } + } + + ssusb->pericfg = syscon_regmap_lookup_by_phandle(dn, + "mediatek,syscon-wakeup"); + if (IS_ERR(ssusb->pericfg)) { + dev_err(dev, "fail to get pericfg regs\n"); + return PTR_ERR(ssusb->pericfg); + } + + return 0; +} + +static int ssusb_wakeup_clks_enable(struct ssusb_mtk *ssusb) +{ + int ret; + + ret = clk_prepare_enable(ssusb->wk_deb_p0); + if (ret) { + dev_err(ssusb->dev, "failed to enable wk_deb_p0\n"); + goto usb_p0_err; + } + + ret = clk_prepare_enable(ssusb->wk_deb_p1); + if (ret) { + dev_err(ssusb->dev, "failed to enable wk_deb_p1\n"); + goto usb_p1_err; + } + + return 0; + +usb_p1_err: + clk_disable_unprepare(ssusb->wk_deb_p0); +usb_p0_err: + return -EINVAL; +} + +static void ssusb_wakeup_clks_disable(struct ssusb_mtk *ssusb) +{ + clk_disable_unprepare(ssusb->wk_deb_p1); + clk_disable_unprepare(ssusb->wk_deb_p0); +} + +static void host_ports_num_get(struct ssusb_mtk *ssusb) +{ + u32 xhci_cap; + + xhci_cap = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_XHCI_CAP); + ssusb->u2_ports = SSUSB_IP_XHCI_U2_PORT_NUM(xhci_cap); + ssusb->u3_ports = SSUSB_IP_XHCI_U3_PORT_NUM(xhci_cap); + + dev_dbg(ssusb->dev, "host - u2_ports:%d, u3_ports:%d\n", + ssusb->u2_ports, ssusb->u3_ports); +} + +/* only configure ports will be used later */ +int ssusb_host_enable(struct ssusb_mtk *ssusb) +{ + void __iomem *ibase = ssusb->ippc_base; + int num_u3p = ssusb->u3_ports; + int num_u2p = ssusb->u2_ports; + u32 check_clk; + u32 value; + int i; + + /* power on host ip */ + mtu3_clrbits(ibase, U3D_SSUSB_IP_PW_CTRL1, SSUSB_IP_HOST_PDN); + + /* power on and enable all u3 ports */ + for (i = 0; i < num_u3p; i++) { + value = mtu3_readl(ibase, SSUSB_U3_CTRL(i)); + value &= ~(SSUSB_U3_PORT_PDN | SSUSB_U3_PORT_DIS); + value |= SSUSB_U3_PORT_HOST_SEL; + mtu3_writel(ibase, SSUSB_U3_CTRL(i), value); + } + + /* power on and enable all u2 ports */ + for (i = 0; i < num_u2p; i++) { + value = mtu3_readl(ibase, SSUSB_U2_CTRL(i)); + value &= ~(SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_DIS); + value |= SSUSB_U2_PORT_HOST_SEL; + mtu3_writel(ibase, SSUSB_U2_CTRL(i), value); + } + + check_clk = SSUSB_XHCI_RST_B_STS; + if (num_u3p) + check_clk = SSUSB_U3_MAC_RST_B_STS; + + return ssusb_check_clocks(ssusb, check_clk); +} + +int ssusb_host_disable(struct ssusb_mtk *ssusb, bool suspend) +{ + void __iomem *ibase = ssusb->ippc_base; + int num_u3p = ssusb->u3_ports; + int num_u2p = ssusb->u2_ports; + u32 value; + int ret; + int i; + + /* power down and disable all u3 ports */ + for (i = 0; i < num_u3p; i++) { + value = mtu3_readl(ibase, SSUSB_U3_CTRL(i)); + value |= SSUSB_U3_PORT_PDN; + value |= suspend ? 0 : SSUSB_U3_PORT_DIS; + mtu3_writel(ibase, SSUSB_U3_CTRL(i), value); + } + + /* power down and disable all u2 ports */ + for (i = 0; i < num_u2p; i++) { + value = mtu3_readl(ibase, SSUSB_U2_CTRL(i)); + value |= SSUSB_U2_PORT_PDN; + value |= suspend ? 0 : SSUSB_U2_PORT_DIS; + mtu3_writel(ibase, SSUSB_U2_CTRL(i), value); + } + + /* power down host ip */ + mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL1, SSUSB_IP_HOST_PDN); + + if (!suspend) + return 0; + + /* wait for host ip to sleep */ + ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS1, value, + (value & SSUSB_IP_SLEEP_STS), 100, 100000); + if (ret) + dev_err(ssusb->dev, "ip sleep failed!!!\n"); + + return ret; +} + +static void ssusb_host_setup(struct ssusb_mtk *ssusb) +{ + host_ports_num_get(ssusb); + + /* + * power on host and power on/enable all ports + * if support OTG, gadget driver will switch port0 to device mode + */ + ssusb_host_enable(ssusb); +} + +static void ssusb_host_cleanup(struct ssusb_mtk *ssusb) +{ + ssusb_host_disable(ssusb, false); +} + +/* + * If host supports multiple ports, the VBUSes(5V) of ports except port0 + * which supports OTG are better to be enabled by default in DTS. + * Because the host driver will keep link with devices attached when system + * enters suspend mode, so no need to control VBUSes after initialization. + */ +int ssusb_host_init(struct ssusb_mtk *ssusb, struct device_node *parent_dn) +{ + struct device *parent_dev = ssusb->dev; + int ret; + + ssusb_host_setup(ssusb); + + ret = of_platform_populate(parent_dn, NULL, NULL, parent_dev); + if (ret) { + dev_dbg(parent_dev, "failed to create child devices at %s\n", + parent_dn->full_name); + return ret; + } + + dev_info(parent_dev, "xHCI platform device register success...\n"); + + return 0; +} + +void ssusb_host_exit(struct ssusb_mtk *ssusb) +{ + of_platform_depopulate(ssusb->dev); + ssusb_host_cleanup(ssusb); +} + +int ssusb_wakeup_enable(struct ssusb_mtk *ssusb) +{ + int ret = 0; + + if (ssusb->wakeup_en) { + ret = ssusb_wakeup_clks_enable(ssusb); + ssusb_wakeup_ip_sleep_en(ssusb); + } + return ret; +} + +void ssusb_wakeup_disable(struct ssusb_mtk *ssusb) +{ + if (ssusb->wakeup_en) { + ssusb_wakeup_ip_sleep_dis(ssusb); + ssusb_wakeup_clks_disable(ssusb); + } +} diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index 52fc0edbe3ee..facb76c2877b 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -21,14 +21,16 @@ #include <linux/module.h> #include <linux/of_address.h> #include <linux/of_irq.h> +#include <linux/pinctrl/consumer.h> #include <linux/platform_device.h> #include "mtu3.h" +#include "mtu3_dr.h" /* u2-port0 should be powered on and enabled; */ -int ssusb_check_clocks(struct mtu3 *mtu, u32 ex_clks) +int ssusb_check_clocks(struct ssusb_mtk *ssusb, u32 ex_clks) { - void __iomem *ibase = mtu->ippc_base; + void __iomem *ibase = ssusb->ippc_base; u32 value, check_val; int ret; @@ -38,136 +40,209 @@ int ssusb_check_clocks(struct mtu3 *mtu, u32 ex_clks) ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS1, value, (check_val == (value & check_val)), 100, 20000); if (ret) { - dev_err(mtu->dev, "clks of sts1 are not stable!\n"); + dev_err(ssusb->dev, "clks of sts1 are not stable!\n"); return ret; } ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS2, value, (value & SSUSB_U2_MAC_SYS_RST_B_STS), 100, 10000); if (ret) { - dev_err(mtu->dev, "mac2 clock is not stable\n"); + dev_err(ssusb->dev, "mac2 clock is not stable\n"); return ret; } return 0; } -static int ssusb_rscs_init(struct mtu3 *mtu) +static int ssusb_phy_init(struct ssusb_mtk *ssusb) +{ + int i; + int ret; + + for (i = 0; i < ssusb->num_phys; i++) { + ret = phy_init(ssusb->phys[i]); + if (ret) + goto exit_phy; + } + return 0; + +exit_phy: + for (; i > 0; i--) + phy_exit(ssusb->phys[i - 1]); + + return ret; +} + +static int ssusb_phy_exit(struct ssusb_mtk *ssusb) +{ + int i; + + for (i = 0; i < ssusb->num_phys; i++) + phy_exit(ssusb->phys[i]); + + return 0; +} + +static int ssusb_phy_power_on(struct ssusb_mtk *ssusb) +{ + int i; + int ret; + + for (i = 0; i < ssusb->num_phys; i++) { + ret = phy_power_on(ssusb->phys[i]); + if (ret) + goto power_off_phy; + } + return 0; + +power_off_phy: + for (; i > 0; i--) + phy_power_off(ssusb->phys[i - 1]); + + return ret; +} + +static void ssusb_phy_power_off(struct ssusb_mtk *ssusb) +{ + unsigned int i; + + for (i = 0; i < ssusb->num_phys; i++) + phy_power_off(ssusb->phys[i]); +} + +static int ssusb_rscs_init(struct ssusb_mtk *ssusb) { int ret = 0; - ret = regulator_enable(mtu->vusb33); + ret = regulator_enable(ssusb->vusb33); if (ret) { - dev_err(mtu->dev, "failed to enable vusb33\n"); + dev_err(ssusb->dev, "failed to enable vusb33\n"); goto vusb33_err; } - ret = clk_prepare_enable(mtu->sys_clk); + ret = clk_prepare_enable(ssusb->sys_clk); if (ret) { - dev_err(mtu->dev, "failed to enable sys_clk\n"); + dev_err(ssusb->dev, "failed to enable sys_clk\n"); goto clk_err; } - ret = phy_init(mtu->phy); + ret = ssusb_phy_init(ssusb); if (ret) { - dev_err(mtu->dev, "failed to init phy\n"); + dev_err(ssusb->dev, "failed to init phy\n"); goto phy_init_err; } - ret = phy_power_on(mtu->phy); + ret = ssusb_phy_power_on(ssusb); if (ret) { - dev_err(mtu->dev, "failed to power on phy\n"); + dev_err(ssusb->dev, "failed to power on phy\n"); goto phy_err; } return 0; phy_err: - phy_exit(mtu->phy); + ssusb_phy_exit(ssusb); phy_init_err: - clk_disable_unprepare(mtu->sys_clk); + clk_disable_unprepare(ssusb->sys_clk); clk_err: - regulator_disable(mtu->vusb33); + regulator_disable(ssusb->vusb33); vusb33_err: return ret; } -static void ssusb_rscs_exit(struct mtu3 *mtu) +static void ssusb_rscs_exit(struct ssusb_mtk *ssusb) { - clk_disable_unprepare(mtu->sys_clk); - regulator_disable(mtu->vusb33); - phy_power_off(mtu->phy); - phy_exit(mtu->phy); + clk_disable_unprepare(ssusb->sys_clk); + regulator_disable(ssusb->vusb33); + ssusb_phy_power_off(ssusb); + ssusb_phy_exit(ssusb); } -static void ssusb_ip_sw_reset(struct mtu3 *mtu) +static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) { - mtu3_setbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + /* reset whole ip (xhci & u3d) */ + mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); udelay(1); - mtu3_clrbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); } -static int get_ssusb_rscs(struct platform_device *pdev, struct mtu3 *mtu) +static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) { struct device_node *node = pdev->dev.of_node; struct device *dev = &pdev->dev; struct resource *res; + int i; + int ret; - mtu->phy = devm_of_phy_get_by_index(dev, node, 0); - if (IS_ERR(mtu->phy)) { - dev_err(dev, "failed to get phy\n"); - return PTR_ERR(mtu->phy); - } - - mtu->irq = platform_get_irq(pdev, 0); - if (mtu->irq <= 0) { - dev_err(dev, "fail to get irq number\n"); - return -ENODEV; + ssusb->num_phys = of_count_phandle_with_args(node, + "phys", "#phy-cells"); + if (ssusb->num_phys > 0) { + ssusb->phys = devm_kcalloc(dev, ssusb->num_phys, + sizeof(*ssusb->phys), GFP_KERNEL); + if (!ssusb->phys) + return -ENOMEM; + } else { + ssusb->num_phys = 0; } - 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); + for (i = 0; i < ssusb->num_phys; i++) { + ssusb->phys[i] = devm_of_phy_get_by_index(dev, node, i); + if (IS_ERR(ssusb->phys[i])) { + dev_err(dev, "failed to get phy-%d\n", i); + return PTR_ERR(ssusb->phys[i]); + } } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ippc"); - mtu->ippc_base = devm_ioremap_resource(dev, res); - if (IS_ERR(mtu->ippc_base)) { + ssusb->ippc_base = devm_ioremap_resource(dev, res); + if (IS_ERR(ssusb->ippc_base)) { dev_err(dev, "failed to map memory for ippc\n"); - return PTR_ERR(mtu->ippc_base); + return PTR_ERR(ssusb->ippc_base); } - mtu->vusb33 = devm_regulator_get(&pdev->dev, "vusb33"); - if (IS_ERR(mtu->vusb33)) { + ssusb->vusb33 = devm_regulator_get(&pdev->dev, "vusb33"); + if (IS_ERR(ssusb->vusb33)) { dev_err(dev, "failed to get vusb33\n"); - return PTR_ERR(mtu->vusb33); + return PTR_ERR(ssusb->vusb33); } - mtu->sys_clk = devm_clk_get(dev, "sys_ck"); - if (IS_ERR(mtu->sys_clk)) { + ssusb->sys_clk = devm_clk_get(dev, "sys_ck"); + if (IS_ERR(ssusb->sys_clk)) { dev_err(dev, "failed to get sys clock\n"); - return PTR_ERR(mtu->sys_clk); + return PTR_ERR(ssusb->sys_clk); + } + + ssusb->dr_mode = usb_get_dr_mode(dev); + if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN) { + dev_err(dev, "dr_mode is error\n"); + return -EINVAL; } + if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL) + return 0; + + /* if host role is supported */ + ret = ssusb_wakeup_of_property_parse(ssusb, node); + if (ret) + return ret; + return 0; } static int mtu3_probe(struct platform_device *pdev) { + struct device_node *node = pdev->dev.of_node; struct device *dev = &pdev->dev; - struct mtu3 *mtu; + struct ssusb_mtk *ssusb; int ret = -ENOMEM; /* all elements are set to ZERO as default value */ - mtu = devm_kzalloc(dev, sizeof(struct mtu3), GFP_KERNEL); - if (!mtu) + ssusb = devm_kzalloc(dev, sizeof(*ssusb), GFP_KERNEL); + if (!ssusb) return -ENOMEM; ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); @@ -176,11 +251,10 @@ static int mtu3_probe(struct platform_device *pdev) return -ENOTSUPP; } - platform_set_drvdata(pdev, mtu); - mtu->dev = dev; - spin_lock_init(&mtu->lock); + platform_set_drvdata(pdev, ssusb); + ssusb->dev = dev; - ret = get_ssusb_rscs(pdev, mtu); + ret = get_ssusb_rscs(pdev, ssusb); if (ret) return ret; @@ -189,22 +263,45 @@ static int mtu3_probe(struct platform_device *pdev) pm_runtime_get_sync(dev); device_enable_async_suspend(dev); - ret = ssusb_rscs_init(mtu); + ret = ssusb_rscs_init(ssusb); if (ret) goto comm_init_err; - ssusb_ip_sw_reset(mtu); - - ret = ssusb_gadget_init(mtu); - if (ret) { - dev_err(dev, "failed to initialize gadget\n"); + ssusb_ip_sw_reset(ssusb); + + if (IS_ENABLED(CONFIG_USB_MTU3_HOST)) + ssusb->dr_mode = USB_DR_MODE_HOST; + else if (IS_ENABLED(CONFIG_USB_MTU3_GADGET)) + ssusb->dr_mode = USB_DR_MODE_PERIPHERAL; + + /* default as host */ + ssusb->is_host = !(ssusb->dr_mode == USB_DR_MODE_PERIPHERAL); + + switch (ssusb->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + ret = ssusb_gadget_init(ssusb); + if (ret) { + dev_err(dev, "failed to initialize gadget\n"); + goto comm_exit; + } + break; + case USB_DR_MODE_HOST: + ret = ssusb_host_init(ssusb, node); + if (ret) { + dev_err(dev, "failed to initialize host\n"); + goto comm_exit; + } + break; + default: + dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode); + ret = -EINVAL; goto comm_exit; } return 0; comm_exit: - ssusb_rscs_exit(mtu); + ssusb_rscs_exit(ssusb); comm_init_err: pm_runtime_put_sync(dev); @@ -215,16 +312,73 @@ comm_init_err: static int mtu3_remove(struct platform_device *pdev) { - struct mtu3 *mtu = platform_get_drvdata(pdev); + struct ssusb_mtk *ssusb = platform_get_drvdata(pdev); + + switch (ssusb->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + ssusb_gadget_exit(ssusb); + break; + case USB_DR_MODE_HOST: + ssusb_host_exit(ssusb); + break; + default: + return -EINVAL; + } - ssusb_gadget_exit(mtu); - ssusb_rscs_exit(mtu); + ssusb_rscs_exit(ssusb); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; } +/* + * when support dual-role mode, we reject suspend when + * it works as device mode; + */ +static int __maybe_unused mtu3_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct ssusb_mtk *ssusb = platform_get_drvdata(pdev); + + dev_dbg(dev, "%s\n", __func__); + + /* REVISIT: disconnect it for only device mode? */ + if (!ssusb->is_host) + return 0; + + ssusb_host_disable(ssusb, true); + ssusb_phy_power_off(ssusb); + clk_disable_unprepare(ssusb->sys_clk); + ssusb_wakeup_enable(ssusb); + + return 0; +} + +static int __maybe_unused mtu3_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct ssusb_mtk *ssusb = platform_get_drvdata(pdev); + + dev_dbg(dev, "%s\n", __func__); + + if (!ssusb->is_host) + return 0; + + ssusb_wakeup_disable(ssusb); + clk_prepare_enable(ssusb->sys_clk); + ssusb_phy_power_on(ssusb); + ssusb_host_enable(ssusb); + + return 0; +} + +static const struct dev_pm_ops mtu3_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mtu3_suspend, mtu3_resume) +}; + +#define DEV_PM_OPS (IS_ENABLED(CONFIG_PM) ? &mtu3_pm_ops : NULL) + #ifdef CONFIG_OF static const struct of_device_id mtu3_of_match[] = { @@ -241,6 +395,7 @@ static struct platform_driver mtu3_driver = { .remove = mtu3_remove, .driver = { .name = MTU3_DRIVER_NAME, + .pm = DEV_PM_OPS, .of_match_table = of_match_ptr(mtu3_of_match), }, }; |