| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Motorola CPCAP PMIC USB PHY driver |
| * Copyright (C) 2017 Tony Lindgren <tony@atomide.com> |
| * |
| * Some parts based on earlier Motorola Linux kernel tree code in |
| * board-mapphone-usb.c and cpcap-usb-det.c: |
| * Copyright (C) 2007 - 2011 Motorola, Inc. |
| */ |
| |
| #include <linux/atomic.h> |
| #include <linux/clk.h> |
| #include <linux/delay.h> |
| #include <linux/err.h> |
| #include <linux/io.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_platform.h> |
| #include <linux/iio/consumer.h> |
| #include <linux/pinctrl/consumer.h> |
| #include <linux/platform_device.h> |
| #include <linux/regmap.h> |
| #include <linux/slab.h> |
| |
| #include <linux/gpio/consumer.h> |
| #include <linux/mfd/motorola-cpcap.h> |
| #include <linux/phy/omap_usb.h> |
| #include <linux/phy/phy.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/usb/musb.h> |
| |
| /* CPCAP_REG_USBC1 register bits */ |
| #define CPCAP_BIT_IDPULSE BIT(15) |
| #define CPCAP_BIT_ID100KPU BIT(14) |
| #define CPCAP_BIT_IDPUCNTRL BIT(13) |
| #define CPCAP_BIT_IDPU BIT(12) |
| #define CPCAP_BIT_IDPD BIT(11) |
| #define CPCAP_BIT_VBUSCHRGTMR3 BIT(10) |
| #define CPCAP_BIT_VBUSCHRGTMR2 BIT(9) |
| #define CPCAP_BIT_VBUSCHRGTMR1 BIT(8) |
| #define CPCAP_BIT_VBUSCHRGTMR0 BIT(7) |
| #define CPCAP_BIT_VBUSPU BIT(6) |
| #define CPCAP_BIT_VBUSPD BIT(5) |
| #define CPCAP_BIT_DMPD BIT(4) |
| #define CPCAP_BIT_DPPD BIT(3) |
| #define CPCAP_BIT_DM1K5PU BIT(2) |
| #define CPCAP_BIT_DP1K5PU BIT(1) |
| #define CPCAP_BIT_DP150KPU BIT(0) |
| |
| /* CPCAP_REG_USBC2 register bits */ |
| #define CPCAP_BIT_ZHSDRV1 BIT(15) |
| #define CPCAP_BIT_ZHSDRV0 BIT(14) |
| #define CPCAP_BIT_DPLLCLKREQ BIT(13) |
| #define CPCAP_BIT_SE0CONN BIT(12) |
| #define CPCAP_BIT_UARTTXTRI BIT(11) |
| #define CPCAP_BIT_UARTSWAP BIT(10) |
| #define CPCAP_BIT_UARTMUX1 BIT(9) |
| #define CPCAP_BIT_UARTMUX0 BIT(8) |
| #define CPCAP_BIT_ULPISTPLOW BIT(7) |
| #define CPCAP_BIT_TXENPOL BIT(6) |
| #define CPCAP_BIT_USBXCVREN BIT(5) |
| #define CPCAP_BIT_USBCNTRL BIT(4) |
| #define CPCAP_BIT_USBSUSPEND BIT(3) |
| #define CPCAP_BIT_EMUMODE2 BIT(2) |
| #define CPCAP_BIT_EMUMODE1 BIT(1) |
| #define CPCAP_BIT_EMUMODE0 BIT(0) |
| |
| /* CPCAP_REG_USBC3 register bits */ |
| #define CPCAP_BIT_SPARE_898_15 BIT(15) |
| #define CPCAP_BIT_IHSTX03 BIT(14) |
| #define CPCAP_BIT_IHSTX02 BIT(13) |
| #define CPCAP_BIT_IHSTX01 BIT(12) |
| #define CPCAP_BIT_IHSTX0 BIT(11) |
| #define CPCAP_BIT_IDPU_SPI BIT(10) |
| #define CPCAP_BIT_UNUSED_898_9 BIT(9) |
| #define CPCAP_BIT_VBUSSTBY_EN BIT(8) |
| #define CPCAP_BIT_VBUSEN_SPI BIT(7) |
| #define CPCAP_BIT_VBUSPU_SPI BIT(6) |
| #define CPCAP_BIT_VBUSPD_SPI BIT(5) |
| #define CPCAP_BIT_DMPD_SPI BIT(4) |
| #define CPCAP_BIT_DPPD_SPI BIT(3) |
| #define CPCAP_BIT_SUSPEND_SPI BIT(2) |
| #define CPCAP_BIT_PU_SPI BIT(1) |
| #define CPCAP_BIT_ULPI_SPI_SEL BIT(0) |
| |
| struct cpcap_usb_ints_state { |
| bool id_ground; |
| bool id_float; |
| bool chrg_det; |
| bool rvrs_chrg; |
| bool vbusov; |
| |
| bool chrg_se1b; |
| bool se0conn; |
| bool rvrs_mode; |
| bool chrgcurr1; |
| bool vbusvld; |
| bool sessvld; |
| bool sessend; |
| bool se1; |
| |
| bool battdetb; |
| bool dm; |
| bool dp; |
| }; |
| |
| enum cpcap_gpio_mode { |
| CPCAP_DM_DP, |
| CPCAP_MDM_RX_TX, |
| CPCAP_UNKNOWN_DISABLED, /* Seems to disable USB lines */ |
| CPCAP_OTG_DM_DP, |
| }; |
| |
| struct cpcap_phy_ddata { |
| struct regmap *reg; |
| struct device *dev; |
| struct usb_phy phy; |
| struct delayed_work detect_work; |
| struct pinctrl *pins; |
| struct pinctrl_state *pins_ulpi; |
| struct pinctrl_state *pins_utmi; |
| struct pinctrl_state *pins_uart; |
| struct gpio_desc *gpio[2]; |
| struct iio_channel *vbus; |
| struct iio_channel *id; |
| struct regulator *vusb; |
| atomic_t active; |
| unsigned int vbus_provider:1; |
| unsigned int docked:1; |
| }; |
| |
| static bool cpcap_usb_vbus_valid(struct cpcap_phy_ddata *ddata) |
| { |
| int error, value = 0; |
| |
| error = iio_read_channel_processed(ddata->vbus, &value); |
| if (error >= 0) |
| return value > 3900; |
| |
| dev_err(ddata->dev, "error reading VBUS: %i\n", error); |
| |
| return false; |
| } |
| |
| static int cpcap_usb_phy_set_host(struct usb_otg *otg, struct usb_bus *host) |
| { |
| otg->host = host; |
| if (!host) |
| otg->state = OTG_STATE_UNDEFINED; |
| |
| return 0; |
| } |
| |
| static int cpcap_usb_phy_set_peripheral(struct usb_otg *otg, |
| struct usb_gadget *gadget) |
| { |
| otg->gadget = gadget; |
| if (!gadget) |
| otg->state = OTG_STATE_UNDEFINED; |
| |
| return 0; |
| } |
| |
| static const struct phy_ops ops = { |
| .owner = THIS_MODULE, |
| }; |
| |
| static int cpcap_phy_get_ints_state(struct cpcap_phy_ddata *ddata, |
| struct cpcap_usb_ints_state *s) |
| { |
| int val, error; |
| |
| error = regmap_read(ddata->reg, CPCAP_REG_INTS1, &val); |
| if (error) |
| return error; |
| |
| s->id_ground = val & BIT(15); |
| s->id_float = val & BIT(14); |
| s->vbusov = val & BIT(11); |
| |
| error = regmap_read(ddata->reg, CPCAP_REG_INTS2, &val); |
| if (error) |
| return error; |
| |
| s->vbusvld = val & BIT(3); |
| s->sessvld = val & BIT(2); |
| s->sessend = val & BIT(1); |
| s->se1 = val & BIT(0); |
| |
| error = regmap_read(ddata->reg, CPCAP_REG_INTS4, &val); |
| if (error) |
| return error; |
| |
| s->dm = val & BIT(1); |
| s->dp = val & BIT(0); |
| |
| return 0; |
| } |
| |
| static int cpcap_usb_set_uart_mode(struct cpcap_phy_ddata *ddata); |
| static int cpcap_usb_set_usb_mode(struct cpcap_phy_ddata *ddata); |
| |
| static void cpcap_usb_try_musb_mailbox(struct cpcap_phy_ddata *ddata, |
| enum musb_vbus_id_status status) |
| { |
| int error; |
| |
| error = musb_mailbox(status); |
| if (!error) |
| return; |
| |
| dev_dbg(ddata->dev, "%s: musb_mailbox failed: %i\n", |
| __func__, error); |
| } |
| |
| static void cpcap_usb_detect(struct work_struct *work) |
| { |
| struct cpcap_phy_ddata *ddata; |
| struct cpcap_usb_ints_state s; |
| bool vbus = false; |
| int error; |
| |
| ddata = container_of(work, struct cpcap_phy_ddata, detect_work.work); |
| |
| error = cpcap_phy_get_ints_state(ddata, &s); |
| if (error) |
| return; |
| |
| vbus = cpcap_usb_vbus_valid(ddata); |
| |
| /* We need to kick the VBUS as USB A-host */ |
| if (s.id_ground && ddata->vbus_provider) { |
| dev_dbg(ddata->dev, "still in USB A-host mode, kicking VBUS\n"); |
| |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_ID_GROUND); |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3, |
| CPCAP_BIT_VBUSSTBY_EN | |
| CPCAP_BIT_VBUSEN_SPI, |
| CPCAP_BIT_VBUSEN_SPI); |
| if (error) |
| goto out_err; |
| |
| return; |
| } |
| |
| if (vbus && s.id_ground && ddata->docked) { |
| dev_dbg(ddata->dev, "still docked as A-host, signal ID down\n"); |
| |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_ID_GROUND); |
| |
| return; |
| } |
| |
| /* No VBUS needed with docks */ |
| if (vbus && s.id_ground && !ddata->vbus_provider) { |
| dev_dbg(ddata->dev, "connected to a dock\n"); |
| |
| ddata->docked = true; |
| |
| error = cpcap_usb_set_usb_mode(ddata); |
| if (error) |
| goto out_err; |
| |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_ID_GROUND); |
| |
| /* |
| * Force check state again after musb has reoriented, |
| * otherwise devices won't enumerate after loading PHY |
| * driver. |
| */ |
| schedule_delayed_work(&ddata->detect_work, |
| msecs_to_jiffies(1000)); |
| |
| return; |
| } |
| |
| if (s.id_ground && !ddata->docked) { |
| dev_dbg(ddata->dev, "id ground, USB host mode\n"); |
| |
| ddata->vbus_provider = true; |
| |
| error = cpcap_usb_set_usb_mode(ddata); |
| if (error) |
| goto out_err; |
| |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_ID_GROUND); |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3, |
| CPCAP_BIT_VBUSSTBY_EN | |
| CPCAP_BIT_VBUSEN_SPI, |
| CPCAP_BIT_VBUSEN_SPI); |
| if (error) |
| goto out_err; |
| |
| return; |
| } |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3, |
| CPCAP_BIT_VBUSSTBY_EN | |
| CPCAP_BIT_VBUSEN_SPI, 0); |
| if (error) |
| goto out_err; |
| |
| vbus = cpcap_usb_vbus_valid(ddata); |
| |
| /* Otherwise assume we're connected to a USB host */ |
| if (vbus) { |
| dev_dbg(ddata->dev, "connected to USB host\n"); |
| error = cpcap_usb_set_usb_mode(ddata); |
| if (error) |
| goto out_err; |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_VBUS_VALID); |
| |
| return; |
| } |
| |
| ddata->vbus_provider = false; |
| ddata->docked = false; |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_VBUS_OFF); |
| |
| /* Default to debug UART mode */ |
| error = cpcap_usb_set_uart_mode(ddata); |
| if (error) |
| goto out_err; |
| |
| dev_dbg(ddata->dev, "set UART mode\n"); |
| |
| return; |
| |
| out_err: |
| dev_err(ddata->dev, "error setting cable state: %i\n", error); |
| } |
| |
| static irqreturn_t cpcap_phy_irq_thread(int irq, void *data) |
| { |
| struct cpcap_phy_ddata *ddata = data; |
| |
| if (!atomic_read(&ddata->active)) |
| return IRQ_NONE; |
| |
| schedule_delayed_work(&ddata->detect_work, msecs_to_jiffies(1)); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int cpcap_usb_init_irq(struct platform_device *pdev, |
| struct cpcap_phy_ddata *ddata, |
| const char *name) |
| { |
| int irq, error; |
| |
| irq = platform_get_irq_byname(pdev, name); |
| if (irq < 0) |
| return -ENODEV; |
| |
| error = devm_request_threaded_irq(ddata->dev, irq, NULL, |
| cpcap_phy_irq_thread, |
| IRQF_SHARED | |
| IRQF_ONESHOT, |
| name, ddata); |
| if (error) { |
| dev_err(ddata->dev, "could not get irq %s: %i\n", |
| name, error); |
| |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static const char * const cpcap_phy_irqs[] = { |
| /* REG_INT_0 */ |
| "id_ground", "id_float", |
| |
| /* REG_INT1 */ |
| "se0conn", "vbusvld", "sessvld", "sessend", "se1", |
| |
| /* REG_INT_3 */ |
| "dm", "dp", |
| }; |
| |
| static int cpcap_usb_init_interrupts(struct platform_device *pdev, |
| struct cpcap_phy_ddata *ddata) |
| { |
| int i, error; |
| |
| for (i = 0; i < ARRAY_SIZE(cpcap_phy_irqs); i++) { |
| error = cpcap_usb_init_irq(pdev, ddata, cpcap_phy_irqs[i]); |
| if (error) |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Optional pins and modes. At least Motorola mapphone devices |
| * are using two GPIOs and dynamic pinctrl to multiplex PHY pins |
| * to UART, ULPI or UTMI mode. |
| */ |
| |
| static int cpcap_usb_gpio_set_mode(struct cpcap_phy_ddata *ddata, |
| enum cpcap_gpio_mode mode) |
| { |
| if (!ddata->gpio[0] || !ddata->gpio[1]) |
| return 0; |
| |
| gpiod_set_value(ddata->gpio[0], mode & 1); |
| gpiod_set_value(ddata->gpio[1], mode >> 1); |
| |
| return 0; |
| } |
| |
| static int cpcap_usb_set_uart_mode(struct cpcap_phy_ddata *ddata) |
| { |
| int error; |
| |
| /* Disable lines to prevent glitches from waking up mdm6600 */ |
| error = cpcap_usb_gpio_set_mode(ddata, CPCAP_UNKNOWN_DISABLED); |
| if (error) |
| goto out_err; |
| |
| if (ddata->pins_uart) { |
| error = pinctrl_select_state(ddata->pins, ddata->pins_uart); |
| if (error) |
| goto out_err; |
| } |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC1, |
| CPCAP_BIT_VBUSPD, |
| CPCAP_BIT_VBUSPD); |
| if (error) |
| goto out_err; |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC2, |
| 0xffff, CPCAP_BIT_UARTMUX0 | |
| CPCAP_BIT_EMUMODE0); |
| if (error) |
| goto out_err; |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3, 0x7fff, |
| CPCAP_BIT_IDPU_SPI); |
| if (error) |
| goto out_err; |
| |
| /* Enable UART mode */ |
| error = cpcap_usb_gpio_set_mode(ddata, CPCAP_DM_DP); |
| if (error) |
| goto out_err; |
| |
| return 0; |
| |
| out_err: |
| dev_err(ddata->dev, "%s failed with %i\n", __func__, error); |
| |
| return error; |
| } |
| |
| static int cpcap_usb_set_usb_mode(struct cpcap_phy_ddata *ddata) |
| { |
| int error; |
| |
| /* Disable lines to prevent glitches from waking up mdm6600 */ |
| error = cpcap_usb_gpio_set_mode(ddata, CPCAP_UNKNOWN_DISABLED); |
| if (error) |
| return error; |
| |
| if (ddata->pins_utmi) { |
| error = pinctrl_select_state(ddata->pins, ddata->pins_utmi); |
| if (error) { |
| dev_err(ddata->dev, "could not set usb mode: %i\n", |
| error); |
| |
| return error; |
| } |
| } |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC1, |
| CPCAP_BIT_VBUSPD, 0); |
| if (error) |
| goto out_err; |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC3, |
| CPCAP_BIT_PU_SPI | |
| CPCAP_BIT_DMPD_SPI | |
| CPCAP_BIT_DPPD_SPI | |
| CPCAP_BIT_SUSPEND_SPI | |
| CPCAP_BIT_ULPI_SPI_SEL, 0); |
| if (error) |
| goto out_err; |
| |
| error = regmap_update_bits(ddata->reg, CPCAP_REG_USBC2, |
| CPCAP_BIT_USBXCVREN, |
| CPCAP_BIT_USBXCVREN); |
| if (error) |
| goto out_err; |
| |
| /* Enable USB mode */ |
| error = cpcap_usb_gpio_set_mode(ddata, CPCAP_OTG_DM_DP); |
| if (error) |
| goto out_err; |
| |
| return 0; |
| |
| out_err: |
| dev_err(ddata->dev, "%s failed with %i\n", __func__, error); |
| |
| return error; |
| } |
| |
| static int cpcap_usb_init_optional_pins(struct cpcap_phy_ddata *ddata) |
| { |
| ddata->pins = devm_pinctrl_get(ddata->dev); |
| if (IS_ERR(ddata->pins)) { |
| dev_info(ddata->dev, "default pins not configured: %ld\n", |
| PTR_ERR(ddata->pins)); |
| ddata->pins = NULL; |
| |
| return 0; |
| } |
| |
| ddata->pins_ulpi = pinctrl_lookup_state(ddata->pins, "ulpi"); |
| if (IS_ERR(ddata->pins_ulpi)) { |
| dev_info(ddata->dev, "ulpi pins not configured\n"); |
| ddata->pins_ulpi = NULL; |
| } |
| |
| ddata->pins_utmi = pinctrl_lookup_state(ddata->pins, "utmi"); |
| if (IS_ERR(ddata->pins_utmi)) { |
| dev_info(ddata->dev, "utmi pins not configured\n"); |
| ddata->pins_utmi = NULL; |
| } |
| |
| ddata->pins_uart = pinctrl_lookup_state(ddata->pins, "uart"); |
| if (IS_ERR(ddata->pins_uart)) { |
| dev_info(ddata->dev, "uart pins not configured\n"); |
| ddata->pins_uart = NULL; |
| } |
| |
| if (ddata->pins_uart) |
| return pinctrl_select_state(ddata->pins, ddata->pins_uart); |
| |
| return 0; |
| } |
| |
| static void cpcap_usb_init_optional_gpios(struct cpcap_phy_ddata *ddata) |
| { |
| int i; |
| |
| for (i = 0; i < 2; i++) { |
| ddata->gpio[i] = devm_gpiod_get_index(ddata->dev, "mode", |
| i, GPIOD_OUT_HIGH); |
| if (IS_ERR(ddata->gpio[i])) { |
| dev_info(ddata->dev, "no mode change GPIO%i: %li\n", |
| i, PTR_ERR(ddata->gpio[i])); |
| ddata->gpio[i] = NULL; |
| } |
| } |
| } |
| |
| static int cpcap_usb_init_iio(struct cpcap_phy_ddata *ddata) |
| { |
| enum iio_chan_type type; |
| int error; |
| |
| ddata->vbus = devm_iio_channel_get(ddata->dev, "vbus"); |
| if (IS_ERR(ddata->vbus)) { |
| error = PTR_ERR(ddata->vbus); |
| goto out_err; |
| } |
| |
| if (!ddata->vbus->indio_dev) { |
| error = -ENXIO; |
| goto out_err; |
| } |
| |
| error = iio_get_channel_type(ddata->vbus, &type); |
| if (error < 0) |
| goto out_err; |
| |
| if (type != IIO_VOLTAGE) { |
| error = -EINVAL; |
| goto out_err; |
| } |
| |
| return 0; |
| |
| out_err: |
| dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", |
| error); |
| |
| return error; |
| } |
| |
| #ifdef CONFIG_OF |
| static const struct of_device_id cpcap_usb_phy_id_table[] = { |
| { |
| .compatible = "motorola,cpcap-usb-phy", |
| }, |
| { |
| .compatible = "motorola,mapphone-cpcap-usb-phy", |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, cpcap_usb_phy_id_table); |
| #endif |
| |
| static int cpcap_usb_phy_probe(struct platform_device *pdev) |
| { |
| struct cpcap_phy_ddata *ddata; |
| struct phy *generic_phy; |
| struct phy_provider *phy_provider; |
| struct usb_otg *otg; |
| const struct of_device_id *of_id; |
| int error; |
| |
| of_id = of_match_device(of_match_ptr(cpcap_usb_phy_id_table), |
| &pdev->dev); |
| if (!of_id) |
| return -EINVAL; |
| |
| ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); |
| if (!ddata) |
| return -ENOMEM; |
| |
| ddata->reg = dev_get_regmap(pdev->dev.parent, NULL); |
| if (!ddata->reg) |
| return -ENODEV; |
| |
| otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL); |
| if (!otg) |
| return -ENOMEM; |
| |
| ddata->dev = &pdev->dev; |
| ddata->phy.dev = ddata->dev; |
| ddata->phy.label = "cpcap_usb_phy"; |
| ddata->phy.otg = otg; |
| ddata->phy.type = USB_PHY_TYPE_USB2; |
| otg->set_host = cpcap_usb_phy_set_host; |
| otg->set_peripheral = cpcap_usb_phy_set_peripheral; |
| otg->usb_phy = &ddata->phy; |
| INIT_DELAYED_WORK(&ddata->detect_work, cpcap_usb_detect); |
| platform_set_drvdata(pdev, ddata); |
| |
| ddata->vusb = devm_regulator_get(&pdev->dev, "vusb"); |
| if (IS_ERR(ddata->vusb)) |
| return PTR_ERR(ddata->vusb); |
| |
| error = regulator_enable(ddata->vusb); |
| if (error) |
| return error; |
| |
| generic_phy = devm_phy_create(ddata->dev, NULL, &ops); |
| if (IS_ERR(generic_phy)) { |
| error = PTR_ERR(generic_phy); |
| goto out_reg_disable; |
| } |
| |
| phy_set_drvdata(generic_phy, ddata); |
| |
| phy_provider = devm_of_phy_provider_register(ddata->dev, |
| of_phy_simple_xlate); |
| if (IS_ERR(phy_provider)) { |
| error = PTR_ERR(phy_provider); |
| goto out_reg_disable; |
| } |
| |
| error = cpcap_usb_init_optional_pins(ddata); |
| if (error) |
| goto out_reg_disable; |
| |
| cpcap_usb_init_optional_gpios(ddata); |
| |
| error = cpcap_usb_init_iio(ddata); |
| if (error) |
| goto out_reg_disable; |
| |
| error = cpcap_usb_init_interrupts(pdev, ddata); |
| if (error) |
| goto out_reg_disable; |
| |
| usb_add_phy_dev(&ddata->phy); |
| atomic_set(&ddata->active, 1); |
| schedule_delayed_work(&ddata->detect_work, msecs_to_jiffies(1)); |
| |
| return 0; |
| |
| out_reg_disable: |
| regulator_disable(ddata->vusb); |
| |
| return error; |
| } |
| |
| static int cpcap_usb_phy_remove(struct platform_device *pdev) |
| { |
| struct cpcap_phy_ddata *ddata = platform_get_drvdata(pdev); |
| int error; |
| |
| atomic_set(&ddata->active, 0); |
| error = cpcap_usb_set_uart_mode(ddata); |
| if (error) |
| dev_err(ddata->dev, "could not set UART mode\n"); |
| |
| cpcap_usb_try_musb_mailbox(ddata, MUSB_VBUS_OFF); |
| |
| usb_remove_phy(&ddata->phy); |
| cancel_delayed_work_sync(&ddata->detect_work); |
| regulator_disable(ddata->vusb); |
| |
| return 0; |
| } |
| |
| static struct platform_driver cpcap_usb_phy_driver = { |
| .probe = cpcap_usb_phy_probe, |
| .remove = cpcap_usb_phy_remove, |
| .driver = { |
| .name = "cpcap-usb-phy", |
| .of_match_table = of_match_ptr(cpcap_usb_phy_id_table), |
| }, |
| }; |
| |
| module_platform_driver(cpcap_usb_phy_driver); |
| |
| MODULE_ALIAS("platform:cpcap_usb"); |
| MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>"); |
| MODULE_DESCRIPTION("CPCAP usb phy driver"); |
| MODULE_LICENSE("GPL v2"); |