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Subject[PATCH v2 2/3] usb: phy: remove phy-msm-usb.c
Date
No Qualcomm SoC requires the "phy-msm-usb.c" USB phy driver support
any more, so remove the code.

Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Alex Elder <elder@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
---
v2: Update the Kconfig file so it no longer offers to build this code,
as suggested by Manu Gautam.

drivers/usb/phy/Kconfig | 15 -
drivers/usb/phy/Makefile | 1 -
drivers/usb/phy/phy-msm-usb.c | 2085 -----------------------------------------
3 files changed, 2101 deletions(-)
delete mode 100644 drivers/usb/phy/phy-msm-usb.c

diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index aff702c0eb9f..f5775e5c9f52 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -137,21 +137,6 @@ config USB_ISP1301
To compile this driver as a module, choose M here: the
module will be called phy-isp1301.

-config USB_MSM_OTG
- tristate "Qualcomm on-chip USB OTG controller support"
- depends on (USB || USB_GADGET) && (ARCH_QCOM || COMPILE_TEST)
- depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y'
- depends on RESET_CONTROLLER
- select USB_PHY
- help
- Enable this to support the USB OTG transceiver on Qualcomm chips. It
- handles PHY initialization, clock management, and workarounds
- required after resetting the hardware and power management.
- This driver is required even for peripheral only or host only
- mode configurations.
- This driver is not supported on boards like trout which
- has an external PHY.
-
config USB_QCOM_8X16_PHY
tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support"
depends on ARCH_QCOM || COMPILE_TEST
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index e7c9ca8cafb0..61013f38abbe 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o
obj-$(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_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o
obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o
obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
deleted file mode 100644
index 3d0dd2f97415..000000000000
--- a/drivers/usb/phy/phy-msm-usb.c
+++ /dev/null
@@ -1,2085 +0,0 @@
-/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/extcon.h>
-#include <linux/gpio/consumer.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/uaccess.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/pm_runtime.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/reboot.h>
-#include <linux/reset.h>
-#include <linux/types.h>
-#include <linux/usb/otg.h>
-
-#include <linux/usb.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/of.h>
-#include <linux/usb/ulpi.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb/hcd.h>
-#include <linux/usb/msm_hsusb_hw.h>
-#include <linux/regulator/consumer.h>
-
-/**
- * OTG control
- *
- * OTG_NO_CONTROL Id/VBUS notifications not required. Useful in host
- * only configuration.
- * OTG_PHY_CONTROL Id/VBUS notifications comes form USB PHY.
- * OTG_PMIC_CONTROL Id/VBUS notifications comes from PMIC hardware.
- * OTG_USER_CONTROL Id/VBUS notifcations comes from User via sysfs.
- *
- */
-enum otg_control_type {
- OTG_NO_CONTROL = 0,
- OTG_PHY_CONTROL,
- OTG_PMIC_CONTROL,
- OTG_USER_CONTROL,
-};
-
-/**
- * PHY used in
- *
- * INVALID_PHY Unsupported PHY
- * CI_45NM_INTEGRATED_PHY Chipidea 45nm integrated PHY
- * SNPS_28NM_INTEGRATED_PHY Synopsis 28nm integrated PHY
- *
- */
-enum msm_usb_phy_type {
- INVALID_PHY = 0,
- CI_45NM_INTEGRATED_PHY,
- SNPS_28NM_INTEGRATED_PHY,
-};
-
-#define IDEV_CHG_MAX 1500
-#define IUNIT 100
-
-/**
- * Different states involved in USB charger detection.
- *
- * USB_CHG_STATE_UNDEFINED USB charger is not connected or detection
- * process is not yet started.
- * USB_CHG_STATE_WAIT_FOR_DCD Waiting for Data pins contact.
- * USB_CHG_STATE_DCD_DONE Data pin contact is detected.
- * USB_CHG_STATE_PRIMARY_DONE Primary detection is completed (Detects
- * between SDP and DCP/CDP).
- * USB_CHG_STATE_SECONDARY_DONE Secondary detection is completed (Detects
- * between DCP and CDP).
- * USB_CHG_STATE_DETECTED USB charger type is determined.
- *
- */
-enum usb_chg_state {
- USB_CHG_STATE_UNDEFINED = 0,
- USB_CHG_STATE_WAIT_FOR_DCD,
- USB_CHG_STATE_DCD_DONE,
- USB_CHG_STATE_PRIMARY_DONE,
- USB_CHG_STATE_SECONDARY_DONE,
- USB_CHG_STATE_DETECTED,
-};
-
-/**
- * USB charger types
- *
- * USB_INVALID_CHARGER Invalid USB charger.
- * USB_SDP_CHARGER Standard downstream port. Refers to a downstream port
- * on USB2.0 compliant host/hub.
- * USB_DCP_CHARGER Dedicated charger port (AC charger/ Wall charger).
- * USB_CDP_CHARGER Charging downstream port. Enumeration can happen and
- * IDEV_CHG_MAX can be drawn irrespective of USB state.
- *
- */
-enum usb_chg_type {
- USB_INVALID_CHARGER = 0,
- USB_SDP_CHARGER,
- USB_DCP_CHARGER,
- USB_CDP_CHARGER,
-};
-
-/**
- * struct msm_otg_platform_data - platform device data
- * for msm_otg driver.
- * @phy_init_seq: PHY configuration sequence values. Value of -1 is reserved as
- * "do not overwrite default vaule at this address".
- * @phy_init_sz: PHY configuration sequence size.
- * @vbus_power: VBUS power on/off routine.
- * @power_budget: VBUS power budget in mA (0 will be treated as 500mA).
- * @mode: Supported mode (OTG/peripheral/host).
- * @otg_control: OTG switch controlled by user/Id pin
- */
-struct msm_otg_platform_data {
- int *phy_init_seq;
- int phy_init_sz;
- void (*vbus_power)(bool on);
- unsigned power_budget;
- enum usb_dr_mode mode;
- enum otg_control_type otg_control;
- enum msm_usb_phy_type phy_type;
- void (*setup_gpio)(enum usb_otg_state state);
-};
-
-/**
- * struct msm_otg: OTG driver data. Shared by HCD and DCD.
- * @otg: USB OTG Transceiver structure.
- * @pdata: otg device platform data.
- * @irq: IRQ number assigned for HSUSB controller.
- * @clk: clock struct of usb_hs_clk.
- * @pclk: clock struct of usb_hs_pclk.
- * @core_clk: clock struct of usb_hs_core_clk.
- * @regs: ioremapped register base address.
- * @inputs: OTG state machine inputs(Id, SessValid etc).
- * @sm_work: OTG state machine work.
- * @in_lpm: indicates low power mode (LPM) state.
- * @async_int: Async interrupt arrived.
- * @cur_power: The amount of mA available from downstream port.
- * @chg_work: Charger detection work.
- * @chg_state: The state of charger detection process.
- * @chg_type: The type of charger attached.
- * @dcd_retires: The retry count used to track Data contact
- * detection process.
- * @manual_pullup: true if VBUS is not routed to USB controller/phy
- * and controller driver therefore enables pull-up explicitly before
- * starting controller using usbcmd run/stop bit.
- * @vbus: VBUS signal state trakining, using extcon framework
- * @id: ID signal state trakining, using extcon framework
- * @switch_gpio: Descriptor for GPIO used to control external Dual
- * SPDT USB Switch.
- * @reboot: Used to inform the driver to route USB D+/D- line to Device
- * connector
- */
-struct msm_otg {
- struct usb_phy phy;
- struct msm_otg_platform_data *pdata;
- int irq;
- struct clk *clk;
- struct clk *pclk;
- struct clk *core_clk;
- void __iomem *regs;
-#define ID 0
-#define B_SESS_VLD 1
- unsigned long inputs;
- struct work_struct sm_work;
- atomic_t in_lpm;
- int async_int;
- unsigned cur_power;
- int phy_number;
- struct delayed_work chg_work;
- enum usb_chg_state chg_state;
- enum usb_chg_type chg_type;
- u8 dcd_retries;
- struct regulator *v3p3;
- struct regulator *v1p8;
- struct regulator *vddcx;
- struct regulator_bulk_data supplies[3];
-
- struct reset_control *phy_rst;
- struct reset_control *link_rst;
- int vdd_levels[3];
-
- bool manual_pullup;
-
- struct gpio_desc *switch_gpio;
- struct notifier_block reboot;
-};
-
-#define MSM_USB_BASE (motg->regs)
-#define DRIVER_NAME "msm_otg"
-
-#define ULPI_IO_TIMEOUT_USEC (10 * 1000)
-#define LINK_RESET_TIMEOUT_USEC (250 * 1000)
-
-#define USB_PHY_3P3_VOL_MIN 3050000 /* uV */
-#define USB_PHY_3P3_VOL_MAX 3300000 /* uV */
-#define USB_PHY_3P3_HPM_LOAD 50000 /* uA */
-#define USB_PHY_3P3_LPM_LOAD 4000 /* uA */
-
-#define USB_PHY_1P8_VOL_MIN 1800000 /* uV */
-#define USB_PHY_1P8_VOL_MAX 1800000 /* uV */
-#define USB_PHY_1P8_HPM_LOAD 50000 /* uA */
-#define USB_PHY_1P8_LPM_LOAD 4000 /* uA */
-
-#define USB_PHY_VDD_DIG_VOL_MIN 1000000 /* uV */
-#define USB_PHY_VDD_DIG_VOL_MAX 1320000 /* uV */
-#define USB_PHY_SUSP_DIG_VOL 500000 /* uV */
-
-enum vdd_levels {
- VDD_LEVEL_NONE = 0,
- VDD_LEVEL_MIN,
- VDD_LEVEL_MAX,
-};
-
-static int msm_hsusb_init_vddcx(struct msm_otg *motg, int init)
-{
- int ret = 0;
-
- if (init) {
- ret = regulator_set_voltage(motg->vddcx,
- motg->vdd_levels[VDD_LEVEL_MIN],
- motg->vdd_levels[VDD_LEVEL_MAX]);
- if (ret) {
- dev_err(motg->phy.dev, "Cannot set vddcx voltage\n");
- return ret;
- }
-
- ret = regulator_enable(motg->vddcx);
- if (ret)
- dev_err(motg->phy.dev, "unable to enable hsusb vddcx\n");
- } else {
- ret = regulator_set_voltage(motg->vddcx, 0,
- motg->vdd_levels[VDD_LEVEL_MAX]);
- if (ret)
- dev_err(motg->phy.dev, "Cannot set vddcx voltage\n");
- ret = regulator_disable(motg->vddcx);
- if (ret)
- dev_err(motg->phy.dev, "unable to disable hsusb vddcx\n");
- }
-
- return ret;
-}
-
-static int msm_hsusb_ldo_init(struct msm_otg *motg, int init)
-{
- int rc = 0;
-
- if (init) {
- rc = regulator_set_voltage(motg->v3p3, USB_PHY_3P3_VOL_MIN,
- USB_PHY_3P3_VOL_MAX);
- if (rc) {
- dev_err(motg->phy.dev, "Cannot set v3p3 voltage\n");
- goto exit;
- }
- rc = regulator_enable(motg->v3p3);
- if (rc) {
- dev_err(motg->phy.dev, "unable to enable the hsusb 3p3\n");
- goto exit;
- }
- rc = regulator_set_voltage(motg->v1p8, USB_PHY_1P8_VOL_MIN,
- USB_PHY_1P8_VOL_MAX);
- if (rc) {
- dev_err(motg->phy.dev, "Cannot set v1p8 voltage\n");
- goto disable_3p3;
- }
- rc = regulator_enable(motg->v1p8);
- if (rc) {
- dev_err(motg->phy.dev, "unable to enable the hsusb 1p8\n");
- goto disable_3p3;
- }
-
- return 0;
- }
-
- regulator_disable(motg->v1p8);
-disable_3p3:
- regulator_disable(motg->v3p3);
-exit:
- return rc;
-}
-
-static int msm_hsusb_ldo_set_mode(struct msm_otg *motg, int on)
-{
- int ret = 0;
-
- if (on) {
- ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_HPM_LOAD);
- if (ret < 0) {
- pr_err("Could not set HPM for v1p8\n");
- return ret;
- }
- ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_HPM_LOAD);
- if (ret < 0) {
- pr_err("Could not set HPM for v3p3\n");
- regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD);
- return ret;
- }
- } else {
- ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD);
- if (ret < 0)
- pr_err("Could not set LPM for v1p8\n");
- ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_LPM_LOAD);
- if (ret < 0)
- pr_err("Could not set LPM for v3p3\n");
- }
-
- pr_debug("reg (%s)\n", on ? "HPM" : "LPM");
- return ret < 0 ? ret : 0;
-}
-
-static int ulpi_read(struct usb_phy *phy, u32 reg)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- int cnt = 0;
-
- /* initiate read operation */
- writel(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg),
- USB_ULPI_VIEWPORT);
-
- /* wait for completion */
- while (cnt < ULPI_IO_TIMEOUT_USEC) {
- if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN))
- break;
- udelay(1);
- cnt++;
- }
-
- if (cnt >= ULPI_IO_TIMEOUT_USEC) {
- dev_err(phy->dev, "ulpi_read: timeout %08x\n",
- readl(USB_ULPI_VIEWPORT));
- return -ETIMEDOUT;
- }
- return ULPI_DATA_READ(readl(USB_ULPI_VIEWPORT));
-}
-
-static int ulpi_write(struct usb_phy *phy, u32 val, u32 reg)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- int cnt = 0;
-
- /* initiate write operation */
- writel(ULPI_RUN | ULPI_WRITE |
- ULPI_ADDR(reg) | ULPI_DATA(val),
- USB_ULPI_VIEWPORT);
-
- /* wait for completion */
- while (cnt < ULPI_IO_TIMEOUT_USEC) {
- if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN))
- break;
- udelay(1);
- cnt++;
- }
-
- if (cnt >= ULPI_IO_TIMEOUT_USEC) {
- dev_err(phy->dev, "ulpi_write: timeout\n");
- return -ETIMEDOUT;
- }
- return 0;
-}
-
-static struct usb_phy_io_ops msm_otg_io_ops = {
- .read = ulpi_read,
- .write = ulpi_write,
-};
-
-static void ulpi_init(struct msm_otg *motg)
-{
- struct msm_otg_platform_data *pdata = motg->pdata;
- int *seq = pdata->phy_init_seq, idx;
- u32 addr = ULPI_EXT_VENDOR_SPECIFIC;
-
- for (idx = 0; idx < pdata->phy_init_sz; idx++) {
- if (seq[idx] == -1)
- continue;
-
- dev_vdbg(motg->phy.dev, "ulpi: write 0x%02x to 0x%02x\n",
- seq[idx], addr + idx);
- ulpi_write(&motg->phy, seq[idx], addr + idx);
- }
-}
-
-static int msm_phy_notify_disconnect(struct usb_phy *phy,
- enum usb_device_speed speed)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- int val;
-
- if (motg->manual_pullup) {
- val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL;
- usb_phy_io_write(phy, val, ULPI_CLR(ULPI_MISC_A));
- }
-
- /*
- * Put the transceiver in non-driving mode. Otherwise host
- * may not detect soft-disconnection.
- */
- val = ulpi_read(phy, ULPI_FUNC_CTRL);
- val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
- val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
- ulpi_write(phy, val, ULPI_FUNC_CTRL);
-
- return 0;
-}
-
-static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert)
-{
- int ret;
-
- if (assert)
- ret = reset_control_assert(motg->link_rst);
- else
- ret = reset_control_deassert(motg->link_rst);
-
- if (ret)
- dev_err(motg->phy.dev, "usb link clk reset %s failed\n",
- assert ? "assert" : "deassert");
-
- return ret;
-}
-
-static int msm_otg_phy_clk_reset(struct msm_otg *motg)
-{
- int ret = 0;
-
- if (motg->phy_rst)
- ret = reset_control_reset(motg->phy_rst);
-
- if (ret)
- dev_err(motg->phy.dev, "usb phy clk reset failed\n");
-
- return ret;
-}
-
-static int msm_link_reset(struct msm_otg *motg)
-{
- u32 val;
- int ret;
-
- ret = msm_otg_link_clk_reset(motg, 1);
- if (ret)
- return ret;
-
- /* wait for 1ms delay as suggested in HPG. */
- usleep_range(1000, 1200);
-
- ret = msm_otg_link_clk_reset(motg, 0);
- if (ret)
- return ret;
-
- if (motg->phy_number)
- writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2);
-
- /* put transceiver in serial mode as part of reset */
- val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK;
- writel(val | PORTSC_PTS_SERIAL, USB_PORTSC);
-
- return 0;
-}
-
-static int msm_otg_reset(struct usb_phy *phy)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- int cnt = 0;
-
- writel(USBCMD_RESET, USB_USBCMD);
- while (cnt < LINK_RESET_TIMEOUT_USEC) {
- if (!(readl(USB_USBCMD) & USBCMD_RESET))
- break;
- udelay(1);
- cnt++;
- }
- if (cnt >= LINK_RESET_TIMEOUT_USEC)
- return -ETIMEDOUT;
-
- /* select ULPI phy and clear other status/control bits in PORTSC */
- writel(PORTSC_PTS_ULPI, USB_PORTSC);
-
- writel(0x0, USB_AHBBURST);
- writel(0x08, USB_AHBMODE);
-
- if (motg->phy_number)
- writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2);
- return 0;
-}
-
-static void msm_phy_reset(struct msm_otg *motg)
-{
- void __iomem *addr;
-
- if (motg->pdata->phy_type != SNPS_28NM_INTEGRATED_PHY) {
- msm_otg_phy_clk_reset(motg);
- return;
- }
-
- addr = USB_PHY_CTRL;
- if (motg->phy_number)
- addr = USB_PHY_CTRL2;
-
- /* Assert USB PHY_POR */
- writel(readl(addr) | PHY_POR_ASSERT, addr);
-
- /*
- * wait for minimum 10 microseconds as suggested in HPG.
- * Use a slightly larger value since the exact value didn't
- * work 100% of the time.
- */
- udelay(12);
-
- /* Deassert USB PHY_POR */
- writel(readl(addr) & ~PHY_POR_ASSERT, addr);
-}
-
-static int msm_usb_reset(struct usb_phy *phy)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- int ret;
-
- if (!IS_ERR(motg->core_clk))
- clk_prepare_enable(motg->core_clk);
-
- ret = msm_link_reset(motg);
- if (ret) {
- dev_err(phy->dev, "phy_reset failed\n");
- return ret;
- }
-
- ret = msm_otg_reset(&motg->phy);
- if (ret) {
- dev_err(phy->dev, "link reset failed\n");
- return ret;
- }
-
- msleep(100);
-
- /* Reset USB PHY after performing USB Link RESET */
- msm_phy_reset(motg);
-
- if (!IS_ERR(motg->core_clk))
- clk_disable_unprepare(motg->core_clk);
-
- return 0;
-}
-
-static int msm_phy_init(struct usb_phy *phy)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- struct msm_otg_platform_data *pdata = motg->pdata;
- u32 val, ulpi_val = 0;
-
- /* Program USB PHY Override registers. */
- ulpi_init(motg);
-
- /*
- * It is recommended in HPG to reset USB PHY after programming
- * USB PHY Override registers.
- */
- msm_phy_reset(motg);
-
- if (pdata->otg_control == OTG_PHY_CONTROL) {
- val = readl(USB_OTGSC);
- if (pdata->mode == USB_DR_MODE_OTG) {
- ulpi_val = ULPI_INT_IDGRD | ULPI_INT_SESS_VALID;
- val |= OTGSC_IDIE | OTGSC_BSVIE;
- } else if (pdata->mode == USB_DR_MODE_PERIPHERAL) {
- ulpi_val = ULPI_INT_SESS_VALID;
- val |= OTGSC_BSVIE;
- }
- writel(val, USB_OTGSC);
- ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_RISE);
- ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_FALL);
- }
-
- if (motg->manual_pullup) {
- val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT;
- ulpi_write(phy, val, ULPI_SET(ULPI_MISC_A));
-
- val = readl(USB_GENCONFIG_2);
- val |= GENCONFIG_2_SESS_VLD_CTRL_EN;
- writel(val, USB_GENCONFIG_2);
-
- val = readl(USB_USBCMD);
- val |= USBCMD_SESS_VLD_CTRL;
- writel(val, USB_USBCMD);
-
- val = ulpi_read(phy, ULPI_FUNC_CTRL);
- val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
- val |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
- ulpi_write(phy, val, ULPI_FUNC_CTRL);
- }
-
- if (motg->phy_number)
- writel(readl(USB_PHY_CTRL2) | BIT(16), USB_PHY_CTRL2);
-
- return 0;
-}
-
-#define PHY_SUSPEND_TIMEOUT_USEC (500 * 1000)
-#define PHY_RESUME_TIMEOUT_USEC (100 * 1000)
-
-#ifdef CONFIG_PM
-
-static int msm_hsusb_config_vddcx(struct msm_otg *motg, int high)
-{
- int max_vol = motg->vdd_levels[VDD_LEVEL_MAX];
- int min_vol;
- int ret;
-
- if (high)
- min_vol = motg->vdd_levels[VDD_LEVEL_MIN];
- else
- min_vol = motg->vdd_levels[VDD_LEVEL_NONE];
-
- ret = regulator_set_voltage(motg->vddcx, min_vol, max_vol);
- if (ret) {
- pr_err("Cannot set vddcx voltage\n");
- return ret;
- }
-
- pr_debug("%s: min_vol:%d max_vol:%d\n", __func__, min_vol, max_vol);
-
- return ret;
-}
-
-static int msm_otg_suspend(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- struct usb_bus *bus = phy->otg->host;
- struct msm_otg_platform_data *pdata = motg->pdata;
- void __iomem *addr;
- int cnt = 0;
-
- if (atomic_read(&motg->in_lpm))
- return 0;
-
- disable_irq(motg->irq);
- /*
- * Chipidea 45-nm PHY suspend sequence:
- *
- * Interrupt Latch Register auto-clear feature is not present
- * in all PHY versions. Latch register is clear on read type.
- * Clear latch register to avoid spurious wakeup from
- * low power mode (LPM).
- *
- * PHY comparators are disabled when PHY enters into low power
- * mode (LPM). Keep PHY comparators ON in LPM only when we expect
- * VBUS/Id notifications from USB PHY. Otherwise turn off USB
- * PHY comparators. This save significant amount of power.
- *
- * PLL is not turned off when PHY enters into low power mode (LPM).
- * Disable PLL for maximum power savings.
- */
-
- if (motg->pdata->phy_type == CI_45NM_INTEGRATED_PHY) {
- ulpi_read(phy, 0x14);
- if (pdata->otg_control == OTG_PHY_CONTROL)
- ulpi_write(phy, 0x01, 0x30);
- ulpi_write(phy, 0x08, 0x09);
- }
-
- /*
- * PHY may take some time or even fail to enter into low power
- * mode (LPM). Hence poll for 500 msec and reset the PHY and link
- * in failure case.
- */
- writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC);
- while (cnt < PHY_SUSPEND_TIMEOUT_USEC) {
- if (readl(USB_PORTSC) & PORTSC_PHCD)
- break;
- udelay(1);
- cnt++;
- }
-
- if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) {
- dev_err(phy->dev, "Unable to suspend PHY\n");
- msm_otg_reset(phy);
- enable_irq(motg->irq);
- return -ETIMEDOUT;
- }
-
- /*
- * PHY has capability to generate interrupt asynchronously in low
- * power mode (LPM). This interrupt is level triggered. So USB IRQ
- * line must be disabled till async interrupt enable bit is cleared
- * in USBCMD register. Assert STP (ULPI interface STOP signal) to
- * block data communication from PHY.
- */
- writel(readl(USB_USBCMD) | ASYNC_INTR_CTRL | ULPI_STP_CTRL, USB_USBCMD);
-
- addr = USB_PHY_CTRL;
- if (motg->phy_number)
- addr = USB_PHY_CTRL2;
-
- if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
- motg->pdata->otg_control == OTG_PMIC_CONTROL)
- writel(readl(addr) | PHY_RETEN, addr);
-
- clk_disable_unprepare(motg->pclk);
- clk_disable_unprepare(motg->clk);
- if (!IS_ERR(motg->core_clk))
- clk_disable_unprepare(motg->core_clk);
-
- if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
- motg->pdata->otg_control == OTG_PMIC_CONTROL) {
- msm_hsusb_ldo_set_mode(motg, 0);
- msm_hsusb_config_vddcx(motg, 0);
- }
-
- if (device_may_wakeup(phy->dev))
- enable_irq_wake(motg->irq);
- if (bus)
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags);
-
- atomic_set(&motg->in_lpm, 1);
- enable_irq(motg->irq);
-
- dev_info(phy->dev, "USB in low power mode\n");
-
- return 0;
-}
-
-static int msm_otg_resume(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- struct usb_bus *bus = phy->otg->host;
- void __iomem *addr;
- int cnt = 0;
- unsigned temp;
-
- if (!atomic_read(&motg->in_lpm))
- return 0;
-
- clk_prepare_enable(motg->pclk);
- clk_prepare_enable(motg->clk);
- if (!IS_ERR(motg->core_clk))
- clk_prepare_enable(motg->core_clk);
-
- if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
- motg->pdata->otg_control == OTG_PMIC_CONTROL) {
-
- addr = USB_PHY_CTRL;
- if (motg->phy_number)
- addr = USB_PHY_CTRL2;
-
- msm_hsusb_ldo_set_mode(motg, 1);
- msm_hsusb_config_vddcx(motg, 1);
- writel(readl(addr) & ~PHY_RETEN, addr);
- }
-
- temp = readl(USB_USBCMD);
- temp &= ~ASYNC_INTR_CTRL;
- temp &= ~ULPI_STP_CTRL;
- writel(temp, USB_USBCMD);
-
- /*
- * PHY comes out of low power mode (LPM) in case of wakeup
- * from asynchronous interrupt.
- */
- if (!(readl(USB_PORTSC) & PORTSC_PHCD))
- goto skip_phy_resume;
-
- writel(readl(USB_PORTSC) & ~PORTSC_PHCD, USB_PORTSC);
- while (cnt < PHY_RESUME_TIMEOUT_USEC) {
- if (!(readl(USB_PORTSC) & PORTSC_PHCD))
- break;
- udelay(1);
- cnt++;
- }
-
- if (cnt >= PHY_RESUME_TIMEOUT_USEC) {
- /*
- * This is a fatal error. Reset the link and
- * PHY. USB state can not be restored. Re-insertion
- * of USB cable is the only way to get USB working.
- */
- dev_err(phy->dev, "Unable to resume USB. Re-plugin the cable\n");
- msm_otg_reset(phy);
- }
-
-skip_phy_resume:
- if (device_may_wakeup(phy->dev))
- disable_irq_wake(motg->irq);
- if (bus)
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags);
-
- atomic_set(&motg->in_lpm, 0);
-
- if (motg->async_int) {
- motg->async_int = 0;
- pm_runtime_put(phy->dev);
- enable_irq(motg->irq);
- }
-
- dev_info(phy->dev, "USB exited from low power mode\n");
-
- return 0;
-}
-#endif
-
-static void msm_otg_notify_charger(struct msm_otg *motg, unsigned mA)
-{
- if (motg->cur_power == mA)
- return;
-
- /* TODO: Notify PMIC about available current */
- dev_info(motg->phy.dev, "Avail curr from USB = %u\n", mA);
- motg->cur_power = mA;
-}
-
-static void msm_otg_start_host(struct usb_phy *phy, int on)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- struct msm_otg_platform_data *pdata = motg->pdata;
- struct usb_hcd *hcd;
-
- if (!phy->otg->host)
- return;
-
- hcd = bus_to_hcd(phy->otg->host);
-
- if (on) {
- dev_dbg(phy->dev, "host on\n");
-
- if (pdata->vbus_power)
- pdata->vbus_power(1);
- /*
- * Some boards have a switch cotrolled by gpio
- * to enable/disable internal HUB. Enable internal
- * HUB before kicking the host.
- */
- if (pdata->setup_gpio)
- pdata->setup_gpio(OTG_STATE_A_HOST);
-#ifdef CONFIG_USB
- usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
- device_wakeup_enable(hcd->self.controller);
-#endif
- } else {
- dev_dbg(phy->dev, "host off\n");
-
-#ifdef CONFIG_USB
- usb_remove_hcd(hcd);
-#endif
- if (pdata->setup_gpio)
- pdata->setup_gpio(OTG_STATE_UNDEFINED);
- if (pdata->vbus_power)
- pdata->vbus_power(0);
- }
-}
-
-static int msm_otg_set_host(struct usb_otg *otg, struct usb_bus *host)
-{
- struct msm_otg *motg = container_of(otg->usb_phy, struct msm_otg, phy);
- struct usb_hcd *hcd;
-
- /*
- * Fail host registration if this board can support
- * only peripheral configuration.
- */
- if (motg->pdata->mode == USB_DR_MODE_PERIPHERAL) {
- dev_info(otg->usb_phy->dev, "Host mode is not supported\n");
- return -ENODEV;
- }
-
- if (!host) {
- if (otg->state == OTG_STATE_A_HOST) {
- pm_runtime_get_sync(otg->usb_phy->dev);
- msm_otg_start_host(otg->usb_phy, 0);
- otg->host = NULL;
- otg->state = OTG_STATE_UNDEFINED;
- schedule_work(&motg->sm_work);
- } else {
- otg->host = NULL;
- }
-
- return 0;
- }
-
- hcd = bus_to_hcd(host);
- hcd->power_budget = motg->pdata->power_budget;
-
- otg->host = host;
- dev_dbg(otg->usb_phy->dev, "host driver registered w/ tranceiver\n");
-
- pm_runtime_get_sync(otg->usb_phy->dev);
- schedule_work(&motg->sm_work);
-
- return 0;
-}
-
-static void msm_otg_start_peripheral(struct usb_phy *phy, int on)
-{
- struct msm_otg *motg = container_of(phy, struct msm_otg, phy);
- struct msm_otg_platform_data *pdata = motg->pdata;
-
- if (!phy->otg->gadget)
- return;
-
- if (on) {
- dev_dbg(phy->dev, "gadget on\n");
- /*
- * Some boards have a switch cotrolled by gpio
- * to enable/disable internal HUB. Disable internal
- * HUB before kicking the gadget.
- */
- if (pdata->setup_gpio)
- pdata->setup_gpio(OTG_STATE_B_PERIPHERAL);
- usb_gadget_vbus_connect(phy->otg->gadget);
- } else {
- dev_dbg(phy->dev, "gadget off\n");
- usb_gadget_vbus_disconnect(phy->otg->gadget);
- if (pdata->setup_gpio)
- pdata->setup_gpio(OTG_STATE_UNDEFINED);
- }
-
-}
-
-static int msm_otg_set_peripheral(struct usb_otg *otg,
- struct usb_gadget *gadget)
-{
- struct msm_otg *motg = container_of(otg->usb_phy, struct msm_otg, phy);
-
- /*
- * Fail peripheral registration if this board can support
- * only host configuration.
- */
- if (motg->pdata->mode == USB_DR_MODE_HOST) {
- dev_info(otg->usb_phy->dev, "Peripheral mode is not supported\n");
- return -ENODEV;
- }
-
- if (!gadget) {
- if (otg->state == OTG_STATE_B_PERIPHERAL) {
- pm_runtime_get_sync(otg->usb_phy->dev);
- msm_otg_start_peripheral(otg->usb_phy, 0);
- otg->gadget = NULL;
- otg->state = OTG_STATE_UNDEFINED;
- schedule_work(&motg->sm_work);
- } else {
- otg->gadget = NULL;
- }
-
- return 0;
- }
- otg->gadget = gadget;
- dev_dbg(otg->usb_phy->dev,
- "peripheral driver registered w/ tranceiver\n");
-
- pm_runtime_get_sync(otg->usb_phy->dev);
- schedule_work(&motg->sm_work);
-
- return 0;
-}
-
-static bool msm_chg_check_secondary_det(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 chg_det;
- bool ret = false;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- ret = chg_det & (1 << 4);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x87);
- ret = chg_det & 1;
- break;
- default:
- break;
- }
- return ret;
-}
-
-static void msm_chg_enable_secondary_det(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 chg_det;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- /* Turn off charger block */
- chg_det |= ~(1 << 1);
- ulpi_write(phy, chg_det, 0x34);
- udelay(20);
- /* control chg block via ULPI */
- chg_det &= ~(1 << 3);
- ulpi_write(phy, chg_det, 0x34);
- /* put it in host mode for enabling D- source */
- chg_det &= ~(1 << 2);
- ulpi_write(phy, chg_det, 0x34);
- /* Turn on chg detect block */
- chg_det &= ~(1 << 1);
- ulpi_write(phy, chg_det, 0x34);
- udelay(20);
- /* enable chg detection */
- chg_det &= ~(1 << 0);
- ulpi_write(phy, chg_det, 0x34);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- /*
- * Configure DM as current source, DP as current sink
- * and enable battery charging comparators.
- */
- ulpi_write(phy, 0x8, 0x85);
- ulpi_write(phy, 0x2, 0x85);
- ulpi_write(phy, 0x1, 0x85);
- break;
- default:
- break;
- }
-}
-
-static bool msm_chg_check_primary_det(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 chg_det;
- bool ret = false;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- ret = chg_det & (1 << 4);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x87);
- ret = chg_det & 1;
- break;
- default:
- break;
- }
- return ret;
-}
-
-static void msm_chg_enable_primary_det(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 chg_det;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- /* enable chg detection */
- chg_det &= ~(1 << 0);
- ulpi_write(phy, chg_det, 0x34);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- /*
- * Configure DP as current source, DM as current sink
- * and enable battery charging comparators.
- */
- ulpi_write(phy, 0x2, 0x85);
- ulpi_write(phy, 0x1, 0x85);
- break;
- default:
- break;
- }
-}
-
-static bool msm_chg_check_dcd(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 line_state;
- bool ret = false;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- line_state = ulpi_read(phy, 0x15);
- ret = !(line_state & 1);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- line_state = ulpi_read(phy, 0x87);
- ret = line_state & 2;
- break;
- default:
- break;
- }
- return ret;
-}
-
-static void msm_chg_disable_dcd(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 chg_det;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- chg_det &= ~(1 << 5);
- ulpi_write(phy, chg_det, 0x34);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- ulpi_write(phy, 0x10, 0x86);
- break;
- default:
- break;
- }
-}
-
-static void msm_chg_enable_dcd(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 chg_det;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- /* Turn on D+ current source */
- chg_det |= (1 << 5);
- ulpi_write(phy, chg_det, 0x34);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- /* Data contact detection enable */
- ulpi_write(phy, 0x10, 0x85);
- break;
- default:
- break;
- }
-}
-
-static void msm_chg_block_on(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 func_ctrl, chg_det;
-
- /* put the controller in non-driving mode */
- func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL);
- func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
- func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
- ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL);
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- /* control chg block via ULPI */
- chg_det &= ~(1 << 3);
- ulpi_write(phy, chg_det, 0x34);
- /* Turn on chg detect block */
- chg_det &= ~(1 << 1);
- ulpi_write(phy, chg_det, 0x34);
- udelay(20);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- /* Clear charger detecting control bits */
- ulpi_write(phy, 0x3F, 0x86);
- /* Clear alt interrupt latch and enable bits */
- ulpi_write(phy, 0x1F, 0x92);
- ulpi_write(phy, 0x1F, 0x95);
- udelay(100);
- break;
- default:
- break;
- }
-}
-
-static void msm_chg_block_off(struct msm_otg *motg)
-{
- struct usb_phy *phy = &motg->phy;
- u32 func_ctrl, chg_det;
-
- switch (motg->pdata->phy_type) {
- case CI_45NM_INTEGRATED_PHY:
- chg_det = ulpi_read(phy, 0x34);
- /* Turn off charger block */
- chg_det |= ~(1 << 1);
- ulpi_write(phy, chg_det, 0x34);
- break;
- case SNPS_28NM_INTEGRATED_PHY:
- /* Clear charger detecting control bits */
- ulpi_write(phy, 0x3F, 0x86);
- /* Clear alt interrupt latch and enable bits */
- ulpi_write(phy, 0x1F, 0x92);
- ulpi_write(phy, 0x1F, 0x95);
- break;
- default:
- break;
- }
-
- /* put the controller in normal mode */
- func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL);
- func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
- func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
- ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL);
-}
-
-#define MSM_CHG_DCD_POLL_TIME (100 * HZ/1000) /* 100 msec */
-#define MSM_CHG_DCD_MAX_RETRIES 6 /* Tdcd_tmout = 6 * 100 msec */
-#define MSM_CHG_PRIMARY_DET_TIME (40 * HZ/1000) /* TVDPSRC_ON */
-#define MSM_CHG_SECONDARY_DET_TIME (40 * HZ/1000) /* TVDMSRC_ON */
-static void msm_chg_detect_work(struct work_struct *w)
-{
- struct msm_otg *motg = container_of(w, struct msm_otg, chg_work.work);
- struct usb_phy *phy = &motg->phy;
- bool is_dcd, tmout, vout;
- unsigned long delay;
-
- dev_dbg(phy->dev, "chg detection work\n");
- switch (motg->chg_state) {
- case USB_CHG_STATE_UNDEFINED:
- pm_runtime_get_sync(phy->dev);
- msm_chg_block_on(motg);
- msm_chg_enable_dcd(motg);
- motg->chg_state = USB_CHG_STATE_WAIT_FOR_DCD;
- motg->dcd_retries = 0;
- delay = MSM_CHG_DCD_POLL_TIME;
- break;
- case USB_CHG_STATE_WAIT_FOR_DCD:
- is_dcd = msm_chg_check_dcd(motg);
- tmout = ++motg->dcd_retries == MSM_CHG_DCD_MAX_RETRIES;
- if (is_dcd || tmout) {
- msm_chg_disable_dcd(motg);
- msm_chg_enable_primary_det(motg);
- delay = MSM_CHG_PRIMARY_DET_TIME;
- motg->chg_state = USB_CHG_STATE_DCD_DONE;
- } else {
- delay = MSM_CHG_DCD_POLL_TIME;
- }
- break;
- case USB_CHG_STATE_DCD_DONE:
- vout = msm_chg_check_primary_det(motg);
- if (vout) {
- msm_chg_enable_secondary_det(motg);
- delay = MSM_CHG_SECONDARY_DET_TIME;
- motg->chg_state = USB_CHG_STATE_PRIMARY_DONE;
- } else {
- motg->chg_type = USB_SDP_CHARGER;
- motg->chg_state = USB_CHG_STATE_DETECTED;
- delay = 0;
- }
- break;
- case USB_CHG_STATE_PRIMARY_DONE:
- vout = msm_chg_check_secondary_det(motg);
- if (vout)
- motg->chg_type = USB_DCP_CHARGER;
- else
- motg->chg_type = USB_CDP_CHARGER;
- motg->chg_state = USB_CHG_STATE_SECONDARY_DONE;
- /* fall through */
- case USB_CHG_STATE_SECONDARY_DONE:
- motg->chg_state = USB_CHG_STATE_DETECTED;
- case USB_CHG_STATE_DETECTED:
- msm_chg_block_off(motg);
- dev_dbg(phy->dev, "charger = %d\n", motg->chg_type);
- schedule_work(&motg->sm_work);
- return;
- default:
- return;
- }
-
- schedule_delayed_work(&motg->chg_work, delay);
-}
-
-/*
- * We support OTG, Peripheral only and Host only configurations. In case
- * of OTG, mode switch (host-->peripheral/peripheral-->host) can happen
- * via Id pin status or user request (debugfs). Id/BSV interrupts are not
- * enabled when switch is controlled by user and default mode is supplied
- * by board file, which can be changed by userspace later.
- */
-static void msm_otg_init_sm(struct msm_otg *motg)
-{
- struct msm_otg_platform_data *pdata = motg->pdata;
- u32 otgsc = readl(USB_OTGSC);
-
- switch (pdata->mode) {
- case USB_DR_MODE_OTG:
- if (pdata->otg_control == OTG_PHY_CONTROL) {
- if (otgsc & OTGSC_ID)
- set_bit(ID, &motg->inputs);
- else
- clear_bit(ID, &motg->inputs);
-
- if (otgsc & OTGSC_BSV)
- set_bit(B_SESS_VLD, &motg->inputs);
- else
- clear_bit(B_SESS_VLD, &motg->inputs);
- } else if (pdata->otg_control == OTG_USER_CONTROL) {
- set_bit(ID, &motg->inputs);
- clear_bit(B_SESS_VLD, &motg->inputs);
- }
- break;
- case USB_DR_MODE_HOST:
- clear_bit(ID, &motg->inputs);
- break;
- case USB_DR_MODE_PERIPHERAL:
- set_bit(ID, &motg->inputs);
- if (otgsc & OTGSC_BSV)
- set_bit(B_SESS_VLD, &motg->inputs);
- else
- clear_bit(B_SESS_VLD, &motg->inputs);
- break;
- default:
- break;
- }
-}
-
-static void msm_otg_sm_work(struct work_struct *w)
-{
- struct msm_otg *motg = container_of(w, struct msm_otg, sm_work);
- struct usb_otg *otg = motg->phy.otg;
-
- switch (otg->state) {
- case OTG_STATE_UNDEFINED:
- dev_dbg(otg->usb_phy->dev, "OTG_STATE_UNDEFINED state\n");
- msm_otg_reset(otg->usb_phy);
- msm_otg_init_sm(motg);
- otg->state = OTG_STATE_B_IDLE;
- /* FALL THROUGH */
- case OTG_STATE_B_IDLE:
- dev_dbg(otg->usb_phy->dev, "OTG_STATE_B_IDLE state\n");
- if (!test_bit(ID, &motg->inputs) && otg->host) {
- /* disable BSV bit */
- writel(readl(USB_OTGSC) & ~OTGSC_BSVIE, USB_OTGSC);
- msm_otg_start_host(otg->usb_phy, 1);
- otg->state = OTG_STATE_A_HOST;
- } else if (test_bit(B_SESS_VLD, &motg->inputs)) {
- switch (motg->chg_state) {
- case USB_CHG_STATE_UNDEFINED:
- msm_chg_detect_work(&motg->chg_work.work);
- break;
- case USB_CHG_STATE_DETECTED:
- switch (motg->chg_type) {
- case USB_DCP_CHARGER:
- msm_otg_notify_charger(motg,
- IDEV_CHG_MAX);
- break;
- case USB_CDP_CHARGER:
- msm_otg_notify_charger(motg,
- IDEV_CHG_MAX);
- msm_otg_start_peripheral(otg->usb_phy,
- 1);
- otg->state
- = OTG_STATE_B_PERIPHERAL;
- break;
- case USB_SDP_CHARGER:
- msm_otg_notify_charger(motg, IUNIT);
- msm_otg_start_peripheral(otg->usb_phy,
- 1);
- otg->state
- = OTG_STATE_B_PERIPHERAL;
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
- } else {
- /*
- * If charger detection work is pending, decrement
- * the pm usage counter to balance with the one that
- * is incremented in charger detection work.
- */
- if (cancel_delayed_work_sync(&motg->chg_work)) {
- pm_runtime_put_sync(otg->usb_phy->dev);
- msm_otg_reset(otg->usb_phy);
- }
- msm_otg_notify_charger(motg, 0);
- motg->chg_state = USB_CHG_STATE_UNDEFINED;
- motg->chg_type = USB_INVALID_CHARGER;
- }
-
- if (otg->state == OTG_STATE_B_IDLE)
- pm_runtime_put_sync(otg->usb_phy->dev);
- break;
- case OTG_STATE_B_PERIPHERAL:
- dev_dbg(otg->usb_phy->dev, "OTG_STATE_B_PERIPHERAL state\n");
- if (!test_bit(B_SESS_VLD, &motg->inputs) ||
- !test_bit(ID, &motg->inputs)) {
- msm_otg_notify_charger(motg, 0);
- msm_otg_start_peripheral(otg->usb_phy, 0);
- motg->chg_state = USB_CHG_STATE_UNDEFINED;
- motg->chg_type = USB_INVALID_CHARGER;
- otg->state = OTG_STATE_B_IDLE;
- msm_otg_reset(otg->usb_phy);
- schedule_work(w);
- }
- break;
- case OTG_STATE_A_HOST:
- dev_dbg(otg->usb_phy->dev, "OTG_STATE_A_HOST state\n");
- if (test_bit(ID, &motg->inputs)) {
- msm_otg_start_host(otg->usb_phy, 0);
- otg->state = OTG_STATE_B_IDLE;
- msm_otg_reset(otg->usb_phy);
- schedule_work(w);
- }
- break;
- default:
- break;
- }
-}
-
-static irqreturn_t msm_otg_irq(int irq, void *data)
-{
- struct msm_otg *motg = data;
- struct usb_phy *phy = &motg->phy;
- u32 otgsc = 0;
-
- if (atomic_read(&motg->in_lpm)) {
- disable_irq_nosync(irq);
- motg->async_int = 1;
- pm_runtime_get(phy->dev);
- return IRQ_HANDLED;
- }
-
- otgsc = readl(USB_OTGSC);
- if (!(otgsc & (OTGSC_IDIS | OTGSC_BSVIS)))
- return IRQ_NONE;
-
- if ((otgsc & OTGSC_IDIS) && (otgsc & OTGSC_IDIE)) {
- if (otgsc & OTGSC_ID)
- set_bit(ID, &motg->inputs);
- else
- clear_bit(ID, &motg->inputs);
- dev_dbg(phy->dev, "ID set/clear\n");
- pm_runtime_get_noresume(phy->dev);
- } else if ((otgsc & OTGSC_BSVIS) && (otgsc & OTGSC_BSVIE)) {
- if (otgsc & OTGSC_BSV)
- set_bit(B_SESS_VLD, &motg->inputs);
- else
- clear_bit(B_SESS_VLD, &motg->inputs);
- dev_dbg(phy->dev, "BSV set/clear\n");
- pm_runtime_get_noresume(phy->dev);
- }
-
- writel(otgsc, USB_OTGSC);
- schedule_work(&motg->sm_work);
- return IRQ_HANDLED;
-}
-
-static int msm_otg_mode_show(struct seq_file *s, void *unused)
-{
- struct msm_otg *motg = s->private;
- struct usb_otg *otg = motg->phy.otg;
-
- switch (otg->state) {
- case OTG_STATE_A_HOST:
- seq_puts(s, "host\n");
- break;
- case OTG_STATE_B_PERIPHERAL:
- seq_puts(s, "peripheral\n");
- break;
- default:
- seq_puts(s, "none\n");
- break;
- }
-
- return 0;
-}
-
-static int msm_otg_mode_open(struct inode *inode, struct file *file)
-{
- return single_open(file, msm_otg_mode_show, inode->i_private);
-}
-
-static ssize_t msm_otg_mode_write(struct file *file, const char __user *ubuf,
- size_t count, loff_t *ppos)
-{
- struct seq_file *s = file->private_data;
- struct msm_otg *motg = s->private;
- char buf[16];
- struct usb_otg *otg = motg->phy.otg;
- int status = count;
- enum usb_dr_mode req_mode;
-
- memset(buf, 0x00, sizeof(buf));
-
- if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) {
- status = -EFAULT;
- goto out;
- }
-
- if (!strncmp(buf, "host", 4)) {
- req_mode = USB_DR_MODE_HOST;
- } else if (!strncmp(buf, "peripheral", 10)) {
- req_mode = USB_DR_MODE_PERIPHERAL;
- } else if (!strncmp(buf, "none", 4)) {
- req_mode = USB_DR_MODE_UNKNOWN;
- } else {
- status = -EINVAL;
- goto out;
- }
-
- switch (req_mode) {
- case USB_DR_MODE_UNKNOWN:
- switch (otg->state) {
- case OTG_STATE_A_HOST:
- case OTG_STATE_B_PERIPHERAL:
- set_bit(ID, &motg->inputs);
- clear_bit(B_SESS_VLD, &motg->inputs);
- break;
- default:
- goto out;
- }
- break;
- case USB_DR_MODE_PERIPHERAL:
- switch (otg->state) {
- case OTG_STATE_B_IDLE:
- case OTG_STATE_A_HOST:
- set_bit(ID, &motg->inputs);
- set_bit(B_SESS_VLD, &motg->inputs);
- break;
- default:
- goto out;
- }
- break;
- case USB_DR_MODE_HOST:
- switch (otg->state) {
- case OTG_STATE_B_IDLE:
- case OTG_STATE_B_PERIPHERAL:
- clear_bit(ID, &motg->inputs);
- break;
- default:
- goto out;
- }
- break;
- default:
- goto out;
- }
-
- pm_runtime_get_sync(otg->usb_phy->dev);
- schedule_work(&motg->sm_work);
-out:
- return status;
-}
-
-static const struct file_operations msm_otg_mode_fops = {
- .open = msm_otg_mode_open,
- .read = seq_read,
- .write = msm_otg_mode_write,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static struct dentry *msm_otg_dbg_root;
-static struct dentry *msm_otg_dbg_mode;
-
-static int msm_otg_debugfs_init(struct msm_otg *motg)
-{
- msm_otg_dbg_root = debugfs_create_dir("msm_otg", NULL);
-
- if (!msm_otg_dbg_root || IS_ERR(msm_otg_dbg_root))
- return -ENODEV;
-
- msm_otg_dbg_mode = debugfs_create_file("mode", S_IRUGO | S_IWUSR,
- msm_otg_dbg_root, motg, &msm_otg_mode_fops);
- if (!msm_otg_dbg_mode) {
- debugfs_remove(msm_otg_dbg_root);
- msm_otg_dbg_root = NULL;
- return -ENODEV;
- }
-
- return 0;
-}
-
-static void msm_otg_debugfs_cleanup(void)
-{
- debugfs_remove(msm_otg_dbg_mode);
- debugfs_remove(msm_otg_dbg_root);
-}
-
-static const struct of_device_id msm_otg_dt_match[] = {
- {
- .compatible = "qcom,usb-otg-ci",
- .data = (void *) CI_45NM_INTEGRATED_PHY
- },
- {
- .compatible = "qcom,usb-otg-snps",
- .data = (void *) SNPS_28NM_INTEGRATED_PHY
- },
- { }
-};
-MODULE_DEVICE_TABLE(of, msm_otg_dt_match);
-
-static int msm_otg_vbus_notifier(struct notifier_block *nb, unsigned long event,
- void *ptr)
-{
- struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb);
- struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy);
-
- if (event)
- set_bit(B_SESS_VLD, &motg->inputs);
- else
- clear_bit(B_SESS_VLD, &motg->inputs);
-
- if (test_bit(B_SESS_VLD, &motg->inputs)) {
- /* Switch D+/D- lines to Device connector */
- gpiod_set_value_cansleep(motg->switch_gpio, 0);
- } else {
- /* Switch D+/D- lines to Hub */
- gpiod_set_value_cansleep(motg->switch_gpio, 1);
- }
-
- schedule_work(&motg->sm_work);
-
- return NOTIFY_DONE;
-}
-
-static int msm_otg_id_notifier(struct notifier_block *nb, unsigned long event,
- void *ptr)
-{
- struct usb_phy *usb_phy = container_of(nb, struct usb_phy, id_nb);
- struct msm_otg *motg = container_of(usb_phy, struct msm_otg, phy);
-
- if (event)
- clear_bit(ID, &motg->inputs);
- else
- set_bit(ID, &motg->inputs);
-
- schedule_work(&motg->sm_work);
-
- return NOTIFY_DONE;
-}
-
-static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg)
-{
- struct msm_otg_platform_data *pdata;
- struct device_node *node = pdev->dev.of_node;
- struct property *prop;
- int len, ret, words;
- u32 val, tmp[3];
-
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- motg->pdata = pdata;
-
- pdata->phy_type = (enum msm_usb_phy_type)of_device_get_match_data(&pdev->dev);
- if (!pdata->phy_type)
- return 1;
-
- motg->link_rst = devm_reset_control_get(&pdev->dev, "link");
- if (IS_ERR(motg->link_rst))
- return PTR_ERR(motg->link_rst);
-
- motg->phy_rst = devm_reset_control_get(&pdev->dev, "phy");
- if (IS_ERR(motg->phy_rst))
- motg->phy_rst = NULL;
-
- pdata->mode = usb_get_dr_mode(&pdev->dev);
- if (pdata->mode == USB_DR_MODE_UNKNOWN)
- pdata->mode = USB_DR_MODE_OTG;
-
- pdata->otg_control = OTG_PHY_CONTROL;
- if (!of_property_read_u32(node, "qcom,otg-control", &val))
- if (val == OTG_PMIC_CONTROL)
- pdata->otg_control = val;
-
- if (!of_property_read_u32(node, "qcom,phy-num", &val) && val < 2)
- motg->phy_number = val;
-
- motg->vdd_levels[VDD_LEVEL_NONE] = USB_PHY_SUSP_DIG_VOL;
- motg->vdd_levels[VDD_LEVEL_MIN] = USB_PHY_VDD_DIG_VOL_MIN;
- motg->vdd_levels[VDD_LEVEL_MAX] = USB_PHY_VDD_DIG_VOL_MAX;
-
- if (of_get_property(node, "qcom,vdd-levels", &len) &&
- len == sizeof(tmp)) {
- of_property_read_u32_array(node, "qcom,vdd-levels",
- tmp, len / sizeof(*tmp));
- motg->vdd_levels[VDD_LEVEL_NONE] = tmp[VDD_LEVEL_NONE];
- motg->vdd_levels[VDD_LEVEL_MIN] = tmp[VDD_LEVEL_MIN];
- motg->vdd_levels[VDD_LEVEL_MAX] = tmp[VDD_LEVEL_MAX];
- }
-
- motg->manual_pullup = of_property_read_bool(node, "qcom,manual-pullup");
-
- motg->switch_gpio = devm_gpiod_get_optional(&pdev->dev, "switch",
- GPIOD_OUT_LOW);
- if (IS_ERR(motg->switch_gpio))
- return PTR_ERR(motg->switch_gpio);
-
- prop = of_find_property(node, "qcom,phy-init-sequence", &len);
- if (!prop || !len)
- return 0;
-
- words = len / sizeof(u32);
-
- if (words >= ULPI_EXT_VENDOR_SPECIFIC) {
- dev_warn(&pdev->dev, "Too big PHY init sequence %d\n", words);
- return 0;
- }
-
- pdata->phy_init_seq = devm_kzalloc(&pdev->dev, len, GFP_KERNEL);
- if (!pdata->phy_init_seq)
- return 0;
-
- ret = of_property_read_u32_array(node, "qcom,phy-init-sequence",
- pdata->phy_init_seq, words);
- if (!ret)
- pdata->phy_init_sz = words;
-
- return 0;
-}
-
-static int msm_otg_reboot_notify(struct notifier_block *this,
- unsigned long code, void *unused)
-{
- struct msm_otg *motg = container_of(this, struct msm_otg, reboot);
-
- /*
- * Ensure that D+/D- lines are routed to uB connector, so
- * we could load bootloader/kernel at next reboot
- */
- gpiod_set_value_cansleep(motg->switch_gpio, 0);
- return NOTIFY_DONE;
-}
-
-static int msm_otg_probe(struct platform_device *pdev)
-{
- int ret = 0;
- struct device_node *np = pdev->dev.of_node;
- struct msm_otg_platform_data *pdata;
- struct resource *res;
- struct msm_otg *motg;
- struct usb_phy *phy;
- void __iomem *phy_select;
-
- motg = devm_kzalloc(&pdev->dev, sizeof(struct msm_otg), GFP_KERNEL);
- if (!motg)
- return -ENOMEM;
-
- motg->phy.otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg),
- GFP_KERNEL);
- if (!motg->phy.otg)
- return -ENOMEM;
-
- phy = &motg->phy;
- phy->dev = &pdev->dev;
-
- motg->clk = devm_clk_get(&pdev->dev, np ? "core" : "usb_hs_clk");
- if (IS_ERR(motg->clk)) {
- dev_err(&pdev->dev, "failed to get usb_hs_clk\n");
- return PTR_ERR(motg->clk);
- }
-
- /*
- * If USB Core is running its protocol engine based on CORE CLK,
- * CORE CLK must be running at >55Mhz for correct HSUSB
- * operation and USB core cannot tolerate frequency changes on
- * CORE CLK.
- */
- motg->pclk = devm_clk_get(&pdev->dev, np ? "iface" : "usb_hs_pclk");
- if (IS_ERR(motg->pclk)) {
- dev_err(&pdev->dev, "failed to get usb_hs_pclk\n");
- return PTR_ERR(motg->pclk);
- }
-
- /*
- * USB core clock is not present on all MSM chips. This
- * clock is introduced to remove the dependency on AXI
- * bus frequency.
- */
- motg->core_clk = devm_clk_get(&pdev->dev,
- np ? "alt_core" : "usb_hs_core_clk");
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -EINVAL;
- motg->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
- if (!motg->regs)
- return -ENOMEM;
-
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- if (!np)
- return -ENXIO;
- ret = msm_otg_read_dt(pdev, motg);
- if (ret)
- return ret;
- }
-
- /*
- * NOTE: The PHYs can be multiplexed between the chipidea controller
- * and the dwc3 controller, using a single bit. It is important that
- * the dwc3 driver does not set this bit in an incompatible way.
- */
- if (motg->phy_number) {
- phy_select = devm_ioremap_nocache(&pdev->dev, USB2_PHY_SEL, 4);
- if (!phy_select)
- return -ENOMEM;
-
- /* Enable second PHY with the OTG port */
- writel(0x1, phy_select);
- }
-
- dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs);
-
- motg->irq = platform_get_irq(pdev, 0);
- if (motg->irq < 0) {
- dev_err(&pdev->dev, "platform_get_irq failed\n");
- ret = motg->irq;
- return motg->irq;
- }
-
- motg->supplies[0].supply = "vddcx";
- motg->supplies[1].supply = "v3p3";
- motg->supplies[2].supply = "v1p8";
-
- ret = devm_regulator_bulk_get(motg->phy.dev, ARRAY_SIZE(motg->supplies),
- motg->supplies);
- if (ret)
- return ret;
-
- motg->vddcx = motg->supplies[0].consumer;
- motg->v3p3 = motg->supplies[1].consumer;
- motg->v1p8 = motg->supplies[2].consumer;
-
- clk_set_rate(motg->clk, 60000000);
-
- clk_prepare_enable(motg->clk);
- clk_prepare_enable(motg->pclk);
-
- if (!IS_ERR(motg->core_clk))
- clk_prepare_enable(motg->core_clk);
-
- ret = msm_hsusb_init_vddcx(motg, 1);
- if (ret) {
- dev_err(&pdev->dev, "hsusb vddcx configuration failed\n");
- goto disable_clks;
- }
-
- ret = msm_hsusb_ldo_init(motg, 1);
- if (ret) {
- dev_err(&pdev->dev, "hsusb vreg configuration failed\n");
- goto disable_vddcx;
- }
- ret = msm_hsusb_ldo_set_mode(motg, 1);
- if (ret) {
- dev_err(&pdev->dev, "hsusb vreg enable failed\n");
- goto disable_ldo;
- }
-
- writel(0, USB_USBINTR);
- writel(0, USB_OTGSC);
-
- INIT_WORK(&motg->sm_work, msm_otg_sm_work);
- INIT_DELAYED_WORK(&motg->chg_work, msm_chg_detect_work);
- ret = devm_request_irq(&pdev->dev, motg->irq, msm_otg_irq, IRQF_SHARED,
- "msm_otg", motg);
- if (ret) {
- dev_err(&pdev->dev, "request irq failed\n");
- goto disable_ldo;
- }
-
- phy->init = msm_phy_init;
- phy->notify_disconnect = msm_phy_notify_disconnect;
- phy->type = USB_PHY_TYPE_USB2;
- phy->vbus_nb.notifier_call = msm_otg_vbus_notifier;
- phy->id_nb.notifier_call = msm_otg_id_notifier;
-
- phy->io_ops = &msm_otg_io_ops;
-
- phy->otg->usb_phy = &motg->phy;
- phy->otg->set_host = msm_otg_set_host;
- phy->otg->set_peripheral = msm_otg_set_peripheral;
-
- msm_usb_reset(phy);
-
- ret = usb_add_phy_dev(&motg->phy);
- if (ret) {
- dev_err(&pdev->dev, "usb_add_phy failed\n");
- goto disable_ldo;
- }
-
- ret = extcon_get_state(phy->edev, EXTCON_USB);
- if (ret)
- set_bit(B_SESS_VLD, &motg->inputs);
- else
- clear_bit(B_SESS_VLD, &motg->inputs);
-
- ret = extcon_get_state(phy->id_edev, EXTCON_USB_HOST);
- if (ret)
- clear_bit(ID, &motg->inputs);
- else
- set_bit(ID, &motg->inputs);
-
- platform_set_drvdata(pdev, motg);
- device_init_wakeup(&pdev->dev, 1);
-
- if (motg->pdata->mode == USB_DR_MODE_OTG &&
- motg->pdata->otg_control == OTG_USER_CONTROL) {
- ret = msm_otg_debugfs_init(motg);
- if (ret)
- dev_dbg(&pdev->dev, "Can not create mode change file\n");
- }
-
- if (test_bit(B_SESS_VLD, &motg->inputs)) {
- /* Switch D+/D- lines to Device connector */
- gpiod_set_value_cansleep(motg->switch_gpio, 0);
- } else {
- /* Switch D+/D- lines to Hub */
- gpiod_set_value_cansleep(motg->switch_gpio, 1);
- }
-
- motg->reboot.notifier_call = msm_otg_reboot_notify;
- register_reboot_notifier(&motg->reboot);
-
- pm_runtime_set_active(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
-
- return 0;
-
-disable_ldo:
- msm_hsusb_ldo_init(motg, 0);
-disable_vddcx:
- msm_hsusb_init_vddcx(motg, 0);
-disable_clks:
- clk_disable_unprepare(motg->pclk);
- clk_disable_unprepare(motg->clk);
- if (!IS_ERR(motg->core_clk))
- clk_disable_unprepare(motg->core_clk);
-
- return ret;
-}
-
-static int msm_otg_remove(struct platform_device *pdev)
-{
- struct msm_otg *motg = platform_get_drvdata(pdev);
- struct usb_phy *phy = &motg->phy;
- int cnt = 0;
-
- if (phy->otg->host || phy->otg->gadget)
- return -EBUSY;
-
- unregister_reboot_notifier(&motg->reboot);
-
- /*
- * Ensure that D+/D- lines are routed to uB connector, so
- * we could load bootloader/kernel at next reboot
- */
- gpiod_set_value_cansleep(motg->switch_gpio, 0);
-
- msm_otg_debugfs_cleanup();
- cancel_delayed_work_sync(&motg->chg_work);
- cancel_work_sync(&motg->sm_work);
-
- pm_runtime_resume(&pdev->dev);
-
- device_init_wakeup(&pdev->dev, 0);
- pm_runtime_disable(&pdev->dev);
-
- usb_remove_phy(phy);
- disable_irq(motg->irq);
-
- /*
- * Put PHY in low power mode.
- */
- ulpi_read(phy, 0x14);
- ulpi_write(phy, 0x08, 0x09);
-
- writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC);
- while (cnt < PHY_SUSPEND_TIMEOUT_USEC) {
- if (readl(USB_PORTSC) & PORTSC_PHCD)
- break;
- udelay(1);
- cnt++;
- }
- if (cnt >= PHY_SUSPEND_TIMEOUT_USEC)
- dev_err(phy->dev, "Unable to suspend PHY\n");
-
- clk_disable_unprepare(motg->pclk);
- clk_disable_unprepare(motg->clk);
- if (!IS_ERR(motg->core_clk))
- clk_disable_unprepare(motg->core_clk);
- msm_hsusb_ldo_init(motg, 0);
-
- pm_runtime_set_suspended(&pdev->dev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int msm_otg_runtime_idle(struct device *dev)
-{
- struct msm_otg *motg = dev_get_drvdata(dev);
- struct usb_otg *otg = motg->phy.otg;
-
- dev_dbg(dev, "OTG runtime idle\n");
-
- /*
- * It is observed some times that a spurious interrupt
- * comes when PHY is put into LPM immediately after PHY reset.
- * This 1 sec delay also prevents entering into LPM immediately
- * after asynchronous interrupt.
- */
- if (otg->state != OTG_STATE_UNDEFINED)
- pm_schedule_suspend(dev, 1000);
-
- return -EAGAIN;
-}
-
-static int msm_otg_runtime_suspend(struct device *dev)
-{
- struct msm_otg *motg = dev_get_drvdata(dev);
-
- dev_dbg(dev, "OTG runtime suspend\n");
- return msm_otg_suspend(motg);
-}
-
-static int msm_otg_runtime_resume(struct device *dev)
-{
- struct msm_otg *motg = dev_get_drvdata(dev);
-
- dev_dbg(dev, "OTG runtime resume\n");
- return msm_otg_resume(motg);
-}
-#endif
-
-#ifdef CONFIG_PM_SLEEP
-static int msm_otg_pm_suspend(struct device *dev)
-{
- struct msm_otg *motg = dev_get_drvdata(dev);
-
- dev_dbg(dev, "OTG PM suspend\n");
- return msm_otg_suspend(motg);
-}
-
-static int msm_otg_pm_resume(struct device *dev)
-{
- struct msm_otg *motg = dev_get_drvdata(dev);
- int ret;
-
- dev_dbg(dev, "OTG PM resume\n");
-
- ret = msm_otg_resume(motg);
- if (ret)
- return ret;
-
- /*
- * Runtime PM Documentation recommends bringing the
- * device to full powered state upon resume.
- */
- pm_runtime_disable(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
-
- return 0;
-}
-#endif
-
-static const struct dev_pm_ops msm_otg_dev_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(msm_otg_pm_suspend, msm_otg_pm_resume)
- SET_RUNTIME_PM_OPS(msm_otg_runtime_suspend, msm_otg_runtime_resume,
- msm_otg_runtime_idle)
-};
-
-static struct platform_driver msm_otg_driver = {
- .probe = msm_otg_probe,
- .remove = msm_otg_remove,
- .driver = {
- .name = DRIVER_NAME,
- .pm = &msm_otg_dev_pm_ops,
- .of_match_table = msm_otg_dt_match,
- },
-};
-
-module_platform_driver(msm_otg_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("MSM USB transceiver driver");
--
2.11.0
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