[PATCH 4/6] usb: phy: add usb3.0 phy driver for mt65xx SoCs

chunfeng.yun
2015-05-27T11:48:01Z

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
drivers/usb/phy/Kconfig | 10 +
drivers/usb/phy/Makefile | 1 +
drivers/usb/phy/phy-mt65xx-usb3.c | 724 ++++++++++++++++++++++++++++++++++++++
3 files changed, 735 insertions(+)
create mode 100644 drivers/usb/phy/phy-mt65xx-usb3.c

diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 2175678..dfca566 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -151,6 +151,16 @@ config USB_MSM_OTG
This driver is not supported on boards like trout which
has an external PHY.

+config USB_MT65XX_USB3_PHY
+ tristate "Mediatek USB3.0 PHY controller Driver"
+ depends on ARCH_MEDIATEK || COMPILE_TEST
+ select USB_PHY
+ help
+ Say 'Y' here to add support for Mediatek USB3.0 PHY driver
+ for mt65xx SoCs. it supports two usb2.0 ports and
+ one usb3.0 port.
+ To compile this driver as a module, choose M here
+
config USB_MV_OTG
tristate "Marvell USB OTG support"
depends on USB_EHCI_MV && USB_MV_UDC && PM
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 75f2bba..d6113a4 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o
obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o
obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o
obj-$(CONFIG_USB_MSM_OTG) += phy-msm-usb.o
+obj-$(CONFIG_USB_MT65XX_USB3_PHY) += phy-mt65xx-usb3.o
obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o
obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o
obj-$(CONFIG_USB_RCAR_PHY) += phy-rcar-usb.o
diff --git a/drivers/usb/phy/phy-mt65xx-usb3.c b/drivers/usb/phy/phy-mt65xx-usb3.c
new file mode 100644
index 0000000..ec5cf24
--- /dev/null
+++ b/drivers/usb/phy/phy-mt65xx-usb3.c
@@ -0,0 +1,724 @@
+/*
+ * Copyright (c) 2015 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/resource.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_address.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/of.h>
+#include <linux/usb/phy.h>
+#include <linux/clk.h>
+#include <linux/iopoll.h>
+
+/*
+ * relative to MAC base address
+ */
+#define SSUSB_USB3_MAC_CSR_BASE (0x1400)
+#define SSUSB_USB3_SYS_CSR_BASE (0x1400)
+#define SSUSB_USB2_CSR_BASE (0x2400)
+
+/*
+ * for sifslv1 register
+ * relative to USB3_SIF_BASE base address
+ */
+#define SSUSB_SIFSLV_IPPC_BASE (0x700)
+
+/*
+ * for sifslv2 register
+ * relative to USB3_SIF_BASE base address
+ */
+#define SSUSB_SIFSLV_U2PHY_COM_BASE (0x10800)
+#define SSUSB_SIFSLV_U3PHYD_BASE (0x10900)
+#define SSUSB_SIFSLV_U2FREQ_BASE (0x10f00)
+#define SSUSB_USB30_PHYA_SIV_B_BASE (0x10b00)
+#define SSUSB_SIFSLV_U3PHYA_DA_BASE (0x10c00)
+#define SSUSB_SIFSLV_SPLLC (0x10000)
+
+/*port1 refs. +0x800(refer to port0)*/
+#define U3P_PORT_OFFSET (0x800) /*based on port0 */
+#define U3P_PHY_BASE(index) ((U3P_PORT_OFFSET) * (index))
+
+#define U3P_IP_PW_CTRL0 (SSUSB_SIFSLV_IPPC_BASE+0x0000)
+#define CTRL0_IP_SW_RST (0x1<<0)
+
+#define U3P_IP_PW_CTRL1 (SSUSB_SIFSLV_IPPC_BASE+0x0004)
+#define CTRL1_IP_HOST_PDN (0x1<<0)
+
+#define U3P_IP_PW_STS1 (SSUSB_SIFSLV_IPPC_BASE+0x0010)
+#define STS1_U3_MAC_RST (0x1 << 16)
+#define STS1_SYS125_RST (0x1 << 10)
+#define STS1_REF_RST (0x1 << 8)
+#define STS1_SYSPLL_STABLE (0x1 << 0)
+
+#define U3P_IP_PW_STS2 (SSUSB_SIFSLV_IPPC_BASE+0x0014)
+#define STS2_U2_MAC_RST (0x1 << 0)
+
+#define U3P_IP_XHCI_CAP (SSUSB_SIFSLV_IPPC_BASE + 0x24)
+#define CAP_U3_PORT_NUM(p) ((p) & 0xff)
+#define CAP_U2_PORT_NUM(p) (((p) >> 8) & 0xff)
+
+#define U3P_U3_CTRL_0P (SSUSB_SIFSLV_IPPC_BASE+0x0030)
+#define CTRL_U3_PORT_HOST_SEL (0x1<<2)
+#define CTRL_U3_PORT_PDN (0x1<<1)
+#define CTRL_U3_PORT_DIS (0x1<<0)
+
+#define U3P_U2_CTRL_0P (SSUSB_SIFSLV_IPPC_BASE+0x0050)
+#define CTRL_U2_PORT_HOST_SEL (0x1<<2)
+#define CTRL_U2_PORT_PDN (0x1<<1)
+#define CTRL_U2_PORT_DIS (0x1<<0)
+
+#define U3P_U3_CTRL(p) (U3P_U3_CTRL_0P + ((p) * 0x08))
+#define U3P_U2_CTRL(p) (U3P_U2_CTRL_0P + ((p) * 0x08))
+
+#define U3P_USBPHYACR5 (SSUSB_SIFSLV_U2PHY_COM_BASE+0x0014)
+#define PA5_RG_U2_HSTX_SRCTRL (0x7<<12)
+#define PA5_RG_U2_HSTX_SRCTRL_VAL(x) ((0x7 & (x)) << 12)
+#define PA5_RG_U2_HS_100U_U3_EN (0x1<<11)
+
+#define U3P_USBPHYACR6 (SSUSB_SIFSLV_U2PHY_COM_BASE+0x0018)
+#define PA6_RG_U2_ISO_EN (0x1<<31)
+#define PA6_RG_U2_BC11_SW_EN (0x1<<23)
+#define PA6_RG_U2_OTG_VBUSCMP_EN (0x1<<20)
+
+#define U3P_U2PHYACR4 (SSUSB_SIFSLV_U2PHY_COM_BASE+0x0020)
+#define P2C_RG_USB20_GPIO_CTL (0x1<<9)
+#define P2C_USB20_GPIO_MODE (0x1<<8)
+#define P2C_U2_GPIO_CTR_MSK (P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE)
+
+#define U3P_U2PHYDTM0 (SSUSB_SIFSLV_U2PHY_COM_BASE+0x0068)
+#define P2C_FORCE_UART_EN (0x1<<26)
+#define P2C_FORCE_DATAIN (0x1<<23)
+#define P2C_FORCE_DM_PULLDOWN (0x1<<21)
+#define P2C_FORCE_DP_PULLDOWN (0x1<<20)
+#define P2C_FORCE_XCVRSEL (0x1<<19)
+#define P2C_FORCE_SUSPENDM (0x1<<18)
+#define P2C_FORCE_TERMSEL (0x1<<17)
+#define P2C_RG_DATAIN (0xf<<10)
+#define P2C_RG_DATAIN_VAL(x) ((0xf & (x)) << 10)
+#define P2C_RG_DMPULLDOWN (0x1<<7)
+#define P2C_RG_DPPULLDOWN (0x1<<6)
+#define P2C_RG_XCVRSEL (0x3<<4)
+#define P2C_RG_XCVRSEL_VAL(x) ((0x3 & (x)) << 4)
+#define P2C_RG_SUSPENDM (0x1<<3)
+#define P2C_RG_TERMSEL (0x1<<2)
+#define P2C_DTM0_PART_MASK \
+ (P2C_FORCE_DATAIN | P2C_FORCE_DM_PULLDOWN | \
+ P2C_FORCE_DP_PULLDOWN | P2C_FORCE_XCVRSEL | \
+ P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \
+ P2C_RG_TERMSEL)
+
+#define U3P_U2PHYDTM1 (SSUSB_SIFSLV_U2PHY_COM_BASE+0x006C)
+#define P2C_RG_UART_EN (0x1<<16)
+#define P2C_RG_VBUSVALID (0x1<<5)
+#define P2C_RG_SESSEND (0x1<<4)
+#define P2C_RG_AVALID (0x1<<2)
+
+#define U3P_U3_PHYA_REG0 (SSUSB_USB30_PHYA_SIV_B_BASE+0x0000)
+#define P3A_RG_U3_VUSB10_ON (1<<5)
+
+#define U3P_U3_PHYA_REG6 (SSUSB_USB30_PHYA_SIV_B_BASE+0x0018)
+#define P3A_RG_TX_EIDLE_CM (0xf<<28)
+#define P3A_RG_TX_EIDLE_CM_VAL(x) ((0xf & (x)) << 28)
+
+#define U3P_U3_PHYA_REG9 (SSUSB_USB30_PHYA_SIV_B_BASE+0x0024)
+#define P3A_RG_RX_DAC_MUX (0x1f<<1)
+#define P3A_RG_RX_DAC_MUX_VAL(x) ((0x1f & (x)) << 1)
+
+#define U3P_U3PHYA_DA_REG0 (SSUSB_SIFSLV_U3PHYA_DA_BASE + 0x0)
+#define P3A_RG_XTAL_EXT_EN_U3 (0x3<<10)
+#define P3A_RG_XTAL_EXT_EN_U3_VAL(x) ((0x3 & (x)) << 10)
+
+#define U3P_PHYD_CDR1 (SSUSB_SIFSLV_U3PHYD_BASE+0x5c)
+#define P3D_RG_CDR_BIR_LTD1 (0x1f<<24)
+#define P3D_RG_CDR_BIR_LTD1_VAL(x) ((0x1f & (x)) << 24)
+#define P3D_RG_CDR_BIR_LTD0 (0x1f<<8)
+#define P3D_RG_CDR_BIR_LTD0_VAL(x) ((0x1f & (x)) << 8)
+
+#define U3P_XTALCTL3 (SSUSB_SIFSLV_SPLLC + 0x18)
+#define XC3_RG_U3_XTAL_RX_PWD (0x1<<9)
+#define XC3_RG_U3_FRC_XTAL_RX_PWD (0x1<<8)
+
+#define U3P_UX_EXIT_LFPS_PARAM (SSUSB_USB3_MAC_CSR_BASE+0x00A0)
+#define RX_UX_EXIT_REF (0xff<<8)
+#define RX_UX_EXIT_REF_VAL (0x3 << 8)
+
+#define U3P_REF_CLK_PARAM (SSUSB_USB3_MAC_CSR_BASE+0x00B0)
+#define REF_CLK_1000NS (0xff << 0)
+#define REF_CLK_VAL_DEF (0xa << 0)
+
+#define U3P_LINK_PM_TIMER (SSUSB_USB3_SYS_CSR_BASE+0x0208)
+#define PM_LC_TIMEOUT (0xf<<0)
+#define PM_LC_TIMEOUT_VAL (0x3 << 0)
+
+#define U3P_TIMING_PULSE_CTRL (SSUSB_USB3_SYS_CSR_BASE+0x02B4)
+#define U3T_CNT_1US (0xff << 0)
+#define U3T_CNT_1US_VAL (0x3f << 0) /* 62.5MHz: 63 */
+
+#define U3P_U2_TIMING_PARAM (SSUSB_USB2_CSR_BASE+0x0040)
+#define U2T_VAL_1US (0xff<<0)
+#define U2T_VAL_1US_VAL (0x3f << 0) /* 62.5MHz: 63 */
+
+
+struct mt65xx_u3phy {
+ struct usb_phy phy;
+ struct device *dev;
+ struct regulator *vusb33;
+ struct regulator *p1_vbus;
+ void __iomem *mac_base; /* only device-mac regs, exclude xhci's */
+ void __iomem *sif_base; /* include sif & sif2 */
+ struct clk *wk_deb_p0; /* port0's wakeup debounce clock */
+ struct clk *wk_deb_p1;
+ struct clk *sys_mac; /* sys and mac clock */
+ struct clk *u3phya_ref; /* reference clock of usb3 anolog phy */
+ bool enable_usb2_p1;
+};
+
+
+static void u3p_writel(void __iomem *base, u32 offset, u32 data)
+{
+ writel(data, base + offset);
+}
+
+static u32 u3p_readl(void __iomem *base, u32 offset)
+{
+ return readl(base + offset);
+}
+
+static void u3p_setmsk(void __iomem *base, u32 offset, u32 msk)
+{
+ void __iomem *addr = base + offset;
+
+ writel((readl(addr) | msk), addr);
+}
+
+static void u3p_clrmsk(void __iomem *base, u32 offset, u32 msk)
+{
+ void __iomem *addr = base + offset;
+
+ writel((readl(addr) & ~msk), addr);
+}
+
+static void u3p_setval(void __iomem *base, u32 offset,
+ u32 mask, u32 value)
+{
+ void __iomem *addr = base + offset;
+ unsigned int new_value;
+
+ new_value = (readl(addr) & ~mask) | value;
+ writel(new_value, addr);
+}
+
+static void phy_index_power_on(struct mt65xx_u3phy *u3phy, int index)
+{
+ void __iomem *sif_base = u3phy->sif_base + U3P_PHY_BASE(index);
+
+ if (!index) {
+ /* Set RG_SSUSB_VUSB10_ON as 1 after VUSB10 ready */
+ u3p_setmsk(sif_base, U3P_U3_PHYA_REG0, P3A_RG_U3_VUSB10_ON);
+ /* power domain iso disable */
+ u3p_clrmsk(sif_base, U3P_USBPHYACR6, PA6_RG_U2_ISO_EN);
+ }
+
+ /* switch to USB function. (system register, force ip into usb mode) */
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM0, P2C_FORCE_UART_EN);
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM1, P2C_RG_UART_EN);
+ if (!index)
+ u3p_clrmsk(sif_base, U3P_U2PHYACR4, P2C_U2_GPIO_CTR_MSK);
+
+ /* (force_suspendm=0) (let suspendm=1, enable usb 480MHz pll) */
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM0, P2C_FORCE_SUSPENDM);
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM0,
+ P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
+
+ /* DP/DM BC1.1 path Disable */
+ u3p_clrmsk(sif_base, U3P_USBPHYACR6, PA6_RG_U2_BC11_SW_EN);
+ /* OTG Enable */
+ u3p_setmsk(sif_base, U3P_USBPHYACR6, PA6_RG_U2_OTG_VBUSCMP_EN);
+ u3p_setval(sif_base, U3P_U3PHYA_DA_REG0, P3A_RG_XTAL_EXT_EN_U3,
+ P3A_RG_XTAL_EXT_EN_U3_VAL(2));
+ u3p_setval(sif_base, U3P_U3_PHYA_REG9, P3A_RG_RX_DAC_MUX,
+ P3A_RG_RX_DAC_MUX_VAL(4));
+
+ if (!index) {
+ u3p_setmsk(sif_base, U3P_XTALCTL3, XC3_RG_U3_XTAL_RX_PWD);
+ u3p_setmsk(sif_base, U3P_XTALCTL3, XC3_RG_U3_FRC_XTAL_RX_PWD);
+ /* [mt8173]disable Change 100uA current from SSUSB */
+ u3p_clrmsk(sif_base, U3P_USBPHYACR5, PA5_RG_U2_HS_100U_U3_EN);
+ }
+ u3p_setval(sif_base, U3P_U3_PHYA_REG6, P3A_RG_TX_EIDLE_CM,
+ P3A_RG_TX_EIDLE_CM_VAL(0xe));
+ u3p_setval(sif_base, U3P_PHYD_CDR1, P3D_RG_CDR_BIR_LTD0,
+ P3D_RG_CDR_BIR_LTD0_VAL(0xc));
+ u3p_setval(sif_base, U3P_PHYD_CDR1, P3D_RG_CDR_BIR_LTD1,
+ P3D_RG_CDR_BIR_LTD1_VAL(0x3));
+
+ udelay(800);
+ u3p_setmsk(sif_base, U3P_U2PHYDTM1, P2C_RG_VBUSVALID | P2C_RG_AVALID);
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM1, P2C_RG_SESSEND);
+
+ /* USB 2.0 slew rate calibration */
+ u3p_setval(sif_base, U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCTRL,
+ PA5_RG_U2_HSTX_SRCTRL_VAL(4));
+
+ dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index);
+}
+
+
+static void phy_index_power_off(struct mt65xx_u3phy *u3phy, int index)
+{
+ void __iomem *sif_base = u3phy->sif_base + U3P_PHY_BASE(index);
+
+ /* switch to USB function. (system register, force ip into usb mode) */
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM0, P2C_FORCE_UART_EN);
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM1, P2C_RG_UART_EN);
+ if (!index)
+ u3p_clrmsk(sif_base, U3P_U2PHYACR4, P2C_U2_GPIO_CTR_MSK);
+
+ u3p_setmsk(sif_base, U3P_U2PHYDTM0, P2C_FORCE_SUSPENDM);
+ u3p_setval(sif_base, U3P_U2PHYDTM0,
+ P2C_RG_XCVRSEL, P2C_RG_XCVRSEL_VAL(1));
+ u3p_setval(sif_base, U3P_U2PHYDTM0,
+ P2C_RG_DATAIN, P2C_RG_DATAIN_VAL(0));
+ u3p_setmsk(sif_base, U3P_U2PHYDTM0, P2C_DTM0_PART_MASK);
+ /* DP/DM BC1.1 path Disable */
+ u3p_clrmsk(sif_base, U3P_USBPHYACR6, PA6_RG_U2_BC11_SW_EN);
+ /* OTG Disable */
+ u3p_clrmsk(sif_base, U3P_USBPHYACR6, PA6_RG_U2_OTG_VBUSCMP_EN);
+ if (!index) {
+ /* Change 100uA current switch to USB2.0 */
+ u3p_clrmsk(sif_base, U3P_USBPHYACR5, PA5_RG_U2_HS_100U_U3_EN);
+ }
+ udelay(800);
+
+ /* let suspendm=0, set utmi into analog power down */
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM0, P2C_RG_SUSPENDM);
+ udelay(1);
+
+ u3p_clrmsk(sif_base, U3P_U2PHYDTM1, P2C_RG_VBUSVALID | P2C_RG_AVALID);
+ u3p_setmsk(sif_base, U3P_U2PHYDTM1, P2C_RG_SESSEND);
+ if (!index) {
+ /* Set RG_SSUSB_VUSB10_ON as 1 after VUSB10 ready */
+ u3p_clrmsk(sif_base, U3P_U3_PHYA_REG0, P3A_RG_U3_VUSB10_ON);
+ }
+ dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index);
+}
+
+
+static int check_ip_clk_status(struct mt65xx_u3phy *u3phy)
+{
+ int ret;
+ int u3_port_num;
+ int u2_port_num;
+ u32 xhci_cap;
+ u32 val;
+ void __iomem *sif_base = u3phy->sif_base;
+
+ xhci_cap = u3p_readl(sif_base, U3P_IP_XHCI_CAP);
+ u3_port_num = CAP_U3_PORT_NUM(xhci_cap);
+ u2_port_num = CAP_U2_PORT_NUM(xhci_cap);
+
+ ret = readl_poll_timeout(sif_base + U3P_IP_PW_STS1, val,
+ (val & STS1_SYSPLL_STABLE), 100, 10000);
+ if (ret) {
+ dev_err(u3phy->dev, "sypll is not stable!!!\n");
+ return ret;
+ }
+
+ ret = readl_poll_timeout(sif_base + U3P_IP_PW_STS1, val,
+ (val & STS1_REF_RST), 100, 10000);
+ if (ret) {
+ dev_err(u3phy->dev, "ref_clk is still active!!!\n");
+ return ret;
+ }
+
+ ret = readl_poll_timeout(sif_base + U3P_IP_PW_STS1, val,
+ (val & STS1_SYS125_RST), 100, 10000);
+ if (ret) {
+ dev_err(u3phy->dev, "sys125_ck is still active!!!\n");
+ return ret;
+ }
+
+ if (u3_port_num) {
+ ret = readl_poll_timeout(sif_base + U3P_IP_PW_STS1, val,
+ (val & STS1_U3_MAC_RST), 100, 10000);
+ if (ret) {
+ dev_err(u3phy->dev, "mac3_mac_ck is still active!!!\n");
+ return ret;
+ }
+ }
+
+ if (u2_port_num) {
+ ret = readl_poll_timeout(sif_base + U3P_IP_PW_STS2, val,
+ (val & STS2_U2_MAC_RST), 100, 10000);
+ if (ret) {
+ dev_err(u3phy->dev, "mac2_sys_ck is still active!!!\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int u3phy_ports_enable(struct mt65xx_u3phy *u3phy)
+{
+ int i;
+ u32 temp;
+ int u3_port_num;
+ int u2_port_num;
+ void __iomem *sif_base = u3phy->sif_base;
+
+ temp = u3p_readl(sif_base, U3P_IP_XHCI_CAP);
+ u3_port_num = CAP_U3_PORT_NUM(temp);
+ u2_port_num = CAP_U2_PORT_NUM(temp);
+ dev_dbg(u3phy->dev, "%s u2p:%d, u3p:%d\n",
+ __func__, u2_port_num, u3_port_num);
+
+ /* power on host ip */
+ u3p_clrmsk(sif_base, U3P_IP_PW_CTRL1, CTRL1_IP_HOST_PDN);
+
+ /* power on and enable all u3 ports */
+ for (i = 0; i < u3_port_num; i++) {
+ temp = u3p_readl(sif_base, U3P_U3_CTRL(i));
+ temp &= ~(CTRL_U3_PORT_PDN | CTRL_U3_PORT_DIS);
+ temp |= CTRL_U3_PORT_HOST_SEL;
+ u3p_writel(sif_base, U3P_U3_CTRL(i), temp);
+ }
+
+ /* power on and enable all u2 ports */
+ for (i = 0; i < u2_port_num; i++) {
+ temp = u3p_readl(sif_base, U3P_U2_CTRL(i));
+ temp &= ~(CTRL_U2_PORT_PDN | CTRL_U2_PORT_DIS);
+ temp |= CTRL_U2_PORT_HOST_SEL;
+ u3p_writel(sif_base, U3P_U2_CTRL(i), temp);
+ }
+ return check_ip_clk_status(u3phy);
+}
+
+
+static void u3phy_timing_init(struct mt65xx_u3phy *u3phy)
+{
+ void __iomem *mbase = u3phy->mac_base;
+ int u3_port_num;
+ u32 temp;
+
+ temp = u3p_readl(u3phy->sif_base, U3P_IP_XHCI_CAP);
+ u3_port_num = CAP_U3_PORT_NUM(temp);
+
+ if (u3_port_num) {
+ /* set MAC reference clock speed */
+ u3p_setval(mbase, U3P_UX_EXIT_LFPS_PARAM,
+ RX_UX_EXIT_REF, RX_UX_EXIT_REF_VAL);
+ /* set REF_CLK */
+ u3p_setval(mbase, U3P_REF_CLK_PARAM,
+ REF_CLK_1000NS, REF_CLK_VAL_DEF);
+ /* set SYS_CLK */
+ u3p_setval(mbase, U3P_TIMING_PULSE_CTRL,
+ U3T_CNT_1US, U3T_CNT_1US_VAL);
+ /* set LINK_PM_TIMER=3 */
+ u3p_setval(mbase, U3P_LINK_PM_TIMER,
+ PM_LC_TIMEOUT, PM_LC_TIMEOUT_VAL);
+ }
+ u3p_setval(mbase, U3P_U2_TIMING_PARAM, U2T_VAL_1US, U2T_VAL_1US_VAL);
+}
+
+
+static int u3phy_clks_enable(struct mt65xx_u3phy *u3phy)
+{
+ int ret;
+
+ ret = clk_prepare_enable(u3phy->sys_mac);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable sys_mac\n");
+ goto sys_mac_err;
+ }
+
+ ret = clk_prepare_enable(u3phy->u3phya_ref);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable u3phya_ref\n");
+ goto u3phya_ref_err;
+ }
+ ret = clk_prepare_enable(u3phy->wk_deb_p0);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable wk_deb_p0\n");
+ goto usb_p0_err;
+ }
+ if (u3phy->enable_usb2_p1) {
+ ret = clk_prepare_enable(u3phy->wk_deb_p1);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable wk_deb_p1\n");
+ goto usb_p1_err;
+ }
+ }
+ udelay(50);
+
+ return 0;
+
+usb_p1_err:
+ clk_disable_unprepare(u3phy->wk_deb_p0);
+usb_p0_err:
+ clk_disable_unprepare(u3phy->u3phya_ref);
+u3phya_ref_err:
+ clk_disable_unprepare(u3phy->sys_mac);
+sys_mac_err:
+ return -EINVAL;
+}
+
+static void u3phy_clks_disable(struct mt65xx_u3phy *u3phy)
+{
+ if (u3phy->enable_usb2_p1)
+ clk_disable_unprepare(u3phy->wk_deb_p1);
+ clk_disable_unprepare(u3phy->wk_deb_p0);
+ clk_disable_unprepare(u3phy->u3phya_ref);
+ clk_disable_unprepare(u3phy->sys_mac);
+}
+
+
+static int mt65xx_u3phy_init(struct usb_phy *phy)
+{
+ struct mt65xx_u3phy *u3phy;
+ int ret;
+
+ u3phy = container_of(phy, struct mt65xx_u3phy, phy);
+ dev_dbg(u3phy->dev, "%s+\n", __func__);
+
+ if (u3phy->enable_usb2_p1) {
+ ret = regulator_enable(u3phy->p1_vbus);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable p1-vbus\n");
+ goto reg_p1_err;
+ }
+ }
+
+ ret = regulator_enable(u3phy->vusb33);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable vusb33\n");
+ goto reg_err;
+ }
+
+ ret = pm_runtime_get_sync(u3phy->dev);
+ if (ret < 0)
+ goto pm_err;
+
+ ret = u3phy_clks_enable(u3phy);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable clks\n");
+ goto clks_err;
+ }
+
+ /* reset whole ip */
+ u3p_setmsk(u3phy->sif_base, U3P_IP_PW_CTRL0, CTRL0_IP_SW_RST);
+ u3p_clrmsk(u3phy->sif_base, U3P_IP_PW_CTRL0, CTRL0_IP_SW_RST);
+
+ ret = u3phy_ports_enable(u3phy);
+ if (ret) {
+ dev_err(u3phy->dev, "failed to enable ports\n");
+ goto port_err;
+ }
+ u3phy_timing_init(u3phy);
+ phy_index_power_on(u3phy, 0);
+ if (u3phy->enable_usb2_p1)
+ phy_index_power_on(u3phy, 1);
+
+ return 0;
+
+port_err:
+ u3phy_clks_disable(u3phy);
+clks_err:
+ pm_runtime_put_sync(u3phy->dev);
+pm_err:
+ regulator_disable(u3phy->vusb33);
+reg_err:
+ if (u3phy->enable_usb2_p1)
+ regulator_disable(u3phy->p1_vbus);
+reg_p1_err:
+ return ret;
+}
+
+
+static void mt65xx_u3phy_shutdown(struct usb_phy *phy)
+{
+ struct mt65xx_u3phy *u3phy;
+
+ u3phy = container_of(phy, struct mt65xx_u3phy, phy);
+ dev_dbg(u3phy->dev, "%s+\n", __func__);
+
+ phy_index_power_off(u3phy, 0);
+ if (u3phy->enable_usb2_p1) {
+ phy_index_power_off(u3phy, 1);
+ regulator_disable(u3phy->p1_vbus);
+ }
+ u3phy_clks_disable(u3phy);
+ pm_runtime_put_sync(u3phy->dev);
+ regulator_disable(u3phy->vusb33);
+}
+
+
+static int mt65xx_u3phy_suspend(struct usb_phy *x, int suspend)
+{
+ struct mt65xx_u3phy *u3phy = container_of(x, struct mt65xx_u3phy, phy);
+
+ if (suspend) {
+ mt65xx_u3phy_shutdown(&u3phy->phy);
+ return 0;
+ } else {
+ return mt65xx_u3phy_init(&u3phy->phy);
+ }
+}
+
+
+static const struct of_device_id mt65xx_u3phy_id_table[] = {
+ { .compatible = "mediatek,mt8173-u3phy",},
+ { },
+};
+MODULE_DEVICE_TABLE(of, mt65xx_u3phy_id_table);
+
+
+static int mt65xx_u3phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct resource *mac_res;
+ struct resource *sif_res;
+ struct mt65xx_u3phy *u3phy;
+ int retval = -ENOMEM;
+
+ u3phy = devm_kzalloc(&pdev->dev, sizeof(*u3phy), GFP_KERNEL);
+ if (!u3phy)
+ goto err;
+
+ u3phy->dev = &pdev->dev;
+
+ mac_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ u3phy->mac_base = devm_ioremap_resource(dev, mac_res);
+ if (IS_ERR(u3phy->mac_base)) {
+ dev_err(dev, "failed to remap mac regs\n");
+ retval = PTR_ERR(u3phy->mac_base);
+ goto err;
+ }
+
+ sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ u3phy->sif_base = devm_ioremap_resource(dev, sif_res);
+ if (IS_ERR(u3phy->sif_base)) {
+ dev_err(dev, "failed to remap sif regs\n");
+ retval = PTR_ERR(u3phy->sif_base);
+ goto err;
+ }
+
+ u3phy->enable_usb2_p1 = !of_property_read_bool(np, "disable-usb2-p1");
+ dev_dbg(dev, "enable_usb2_p1 - %d\n", u3phy->enable_usb2_p1);
+
+ u3phy->sys_mac = devm_clk_get(u3phy->dev, "sys_mac");
+ if (IS_ERR(u3phy->sys_mac)) {
+ dev_err(dev, "error to get sys_mac\n");
+ retval = PTR_ERR(u3phy->sys_mac);
+ goto err;
+ }
+
+ u3phy->u3phya_ref = devm_clk_get(u3phy->dev, "u3phya_ref");
+ if (IS_ERR(u3phy->u3phya_ref)) {
+ dev_err(dev, "error to get u3phya_ref\n");
+ retval = PTR_ERR(u3phy->u3phya_ref);
+ goto err;
+ }
+
+ u3phy->wk_deb_p0 = devm_clk_get(u3phy->dev, "wakeup_deb_p0");
+ if (IS_ERR(u3phy->wk_deb_p0)) {
+ dev_err(dev, "error to get wakeup_deb_p0\n");
+ retval = PTR_ERR(u3phy->wk_deb_p0);
+ goto err;
+ }
+
+ if (u3phy->enable_usb2_p1) {
+ u3phy->wk_deb_p1 = devm_clk_get(u3phy->dev, "wakeup_deb_p1");
+ if (IS_ERR(u3phy->wk_deb_p1)) {
+ dev_err(dev, "error to get wakeup_deb_p1\n");
+ retval = PTR_ERR(u3phy->wk_deb_p1);
+ goto err;
+ }
+
+ u3phy->p1_vbus = devm_regulator_get(u3phy->dev, "reg-p1-vbus");
+ if (IS_ERR_OR_NULL(u3phy->p1_vbus)) {
+ dev_err(dev, "fail to get p1-vbus\n");
+ retval = PTR_ERR(u3phy->p1_vbus);
+ goto err;
+ }
+ }
+
+ u3phy->vusb33 = devm_regulator_get(u3phy->dev, "reg-vusb33");
+ if (IS_ERR_OR_NULL(u3phy->vusb33)) {
+ dev_err(dev, "fail to get vusb33\n");
+ retval = PTR_ERR(u3phy->vusb33);
+ goto err;
+ }
+
+ pm_runtime_enable(dev);
+ u3phy->phy.dev = u3phy->dev;
+ u3phy->phy.label = "mt65xx-usb3phy";
+ u3phy->phy.type = USB_PHY_TYPE_USB3;
+ u3phy->phy.init = mt65xx_u3phy_init;
+ u3phy->phy.shutdown = mt65xx_u3phy_shutdown;
+ u3phy->phy.set_suspend = mt65xx_u3phy_suspend;
+
+ platform_set_drvdata(pdev, u3phy);
+ retval = usb_add_phy_dev(&u3phy->phy);
+ if (retval) {
+ dev_err(dev, "failed to add phy\n");
+ goto add_phy_err;
+ }
+
+ return 0;
+
+add_phy_err:
+ pm_runtime_disable(dev);
+err:
+ return retval;
+}
+
+static int mt65xx_u3phy_remove(struct platform_device *pdev)
+{
+ struct mt65xx_u3phy *u3phy = platform_get_drvdata(pdev);
+
+ mt65xx_u3phy_shutdown(&u3phy->phy);
+ pm_runtime_disable(&pdev->dev);
+ usb_remove_phy(&u3phy->phy);
+
+ return 0;
+}
+
+static struct platform_driver mt65xx_u3phy_driver = {
+ .probe = mt65xx_u3phy_probe,
+ .remove = mt65xx_u3phy_remove,
+ .driver = {
+ .name = "mt65xx-u3phy",
+ .of_match_table = mt65xx_u3phy_id_table,
+ },
+};
+
+module_platform_driver(mt65xx_u3phy_driver);
+
+MODULE_DESCRIPTION("Mt65xx USB PHY driver");
+MODULE_LICENSE("GPL v2");
--
1.8.1.1.dirty