// SPDX-License-Identifier: GPL-2.0-only /* * Motorola CPCAP PMIC USB PHY driver * Copyright (C) 2017 Tony Lindgren <[email protected]> * * 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/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 … #define CPCAP_BIT_ID100KPU … #define CPCAP_BIT_IDPUCNTRL … #define CPCAP_BIT_IDPU … #define CPCAP_BIT_IDPD … #define CPCAP_BIT_VBUSCHRGTMR3 … #define CPCAP_BIT_VBUSCHRGTMR2 … #define CPCAP_BIT_VBUSCHRGTMR1 … #define CPCAP_BIT_VBUSCHRGTMR0 … #define CPCAP_BIT_VBUSPU … #define CPCAP_BIT_VBUSPD … #define CPCAP_BIT_DMPD … #define CPCAP_BIT_DPPD … #define CPCAP_BIT_DM1K5PU … #define CPCAP_BIT_DP1K5PU … #define CPCAP_BIT_DP150KPU … /* CPCAP_REG_USBC2 register bits */ #define CPCAP_BIT_ZHSDRV1 … #define CPCAP_BIT_ZHSDRV0 … #define CPCAP_BIT_DPLLCLKREQ … #define CPCAP_BIT_SE0CONN … #define CPCAP_BIT_UARTTXTRI … #define CPCAP_BIT_UARTSWAP … #define CPCAP_BIT_UARTMUX1 … #define CPCAP_BIT_UARTMUX0 … #define CPCAP_BIT_ULPISTPLOW … #define CPCAP_BIT_TXENPOL … #define CPCAP_BIT_USBXCVREN … #define CPCAP_BIT_USBCNTRL … #define CPCAP_BIT_USBSUSPEND … #define CPCAP_BIT_EMUMODE2 … #define CPCAP_BIT_EMUMODE1 … #define CPCAP_BIT_EMUMODE0 … /* CPCAP_REG_USBC3 register bits */ #define CPCAP_BIT_SPARE_898_15 … #define CPCAP_BIT_IHSTX03 … #define CPCAP_BIT_IHSTX02 … #define CPCAP_BIT_IHSTX01 … #define CPCAP_BIT_IHSTX0 … #define CPCAP_BIT_IDPU_SPI … #define CPCAP_BIT_UNUSED_898_9 … #define CPCAP_BIT_VBUSSTBY_EN … #define CPCAP_BIT_VBUSEN_SPI … #define CPCAP_BIT_VBUSPU_SPI … #define CPCAP_BIT_VBUSPD_SPI … #define CPCAP_BIT_DMPD_SPI … #define CPCAP_BIT_DPPD_SPI … #define CPCAP_BIT_SUSPEND_SPI … #define CPCAP_BIT_PU_SPI … #define CPCAP_BIT_ULPI_SPI_SEL … struct cpcap_usb_ints_state { … }; enum cpcap_gpio_mode { … }; struct cpcap_phy_ddata { … }; static bool cpcap_usb_vbus_valid(struct cpcap_phy_ddata *ddata) { … } static int cpcap_usb_phy_set_host(struct usb_otg *otg, struct usb_bus *host) { … } static int cpcap_usb_phy_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) { … } static const struct phy_ops ops = …; static int cpcap_phy_get_ints_state(struct cpcap_phy_ddata *ddata, struct cpcap_usb_ints_state *s) { … } 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) { … } static void cpcap_usb_detect(struct work_struct *work) { … } static irqreturn_t cpcap_phy_irq_thread(int irq, void *data) { … } static int cpcap_usb_init_irq(struct platform_device *pdev, struct cpcap_phy_ddata *ddata, const char *name) { … } static const char * const cpcap_phy_irqs[] = …; static int cpcap_usb_init_interrupts(struct platform_device *pdev, struct cpcap_phy_ddata *ddata) { … } /* * 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) { … } 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 int cpcap_usb_init_optional_pins(struct cpcap_phy_ddata *ddata) { … } static void cpcap_usb_init_optional_gpios(struct cpcap_phy_ddata *ddata) { … } static int cpcap_usb_init_iio(struct cpcap_phy_ddata *ddata) { … } #ifdef CONFIG_OF static const struct of_device_id cpcap_usb_phy_id_table[] = …; MODULE_DEVICE_TABLE(of, cpcap_usb_phy_id_table); #endif static int cpcap_usb_phy_probe(struct platform_device *pdev) { … } static void cpcap_usb_phy_remove(struct platform_device *pdev) { … } static struct platform_driver cpcap_usb_phy_driver = …; module_platform_driver(…) …; MODULE_ALIAS(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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