^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * USB transceiver driver for AB8500 family chips
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2010-2013 ST-Ericsson AB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Avinash Kumar <avinash.kumar@stericsson.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Thirupathi Chippakurthy <thirupathi.chippakurthy@stericsson.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/usb/otg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/mfd/abx500.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mfd/abx500/ab8500.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/usb/musb-ux500.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/pinctrl/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* Bank AB8500_SYS_CTRL2_BLOCK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define AB8500_MAIN_WD_CTRL_REG 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Bank AB8500_USB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define AB8500_USB_LINE_STAT_REG 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define AB8505_USB_LINE_STAT_REG 0x94
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define AB8500_USB_PHY_CTRL_REG 0x8A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* Bank AB8500_DEVELOPMENT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define AB8500_BANK12_ACCESS 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Bank AB8500_DEBUG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define AB8500_USB_PHY_TUNE1 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define AB8500_USB_PHY_TUNE2 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define AB8500_USB_PHY_TUNE3 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* Bank AB8500_INTERRUPT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define AB8500_IT_SOURCE2_REG 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define AB8500_BIT_OTG_STAT_ID (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define AB8500_BIT_WD_CTRL_KICK (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define AB8500_BIT_SOURCE2_VBUSDET (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define AB8500_WD_KICK_DELAY_US 100 /* usec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define AB8500_V20_31952_DISABLE_DELAY_US 100 /* usec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* Usb line status register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) enum ab8500_usb_link_status {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) USB_LINK_NOT_CONFIGURED_8500 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) USB_LINK_STD_HOST_NC_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) USB_LINK_STD_HOST_C_NS_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) USB_LINK_STD_HOST_C_S_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) USB_LINK_HOST_CHG_NM_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) USB_LINK_HOST_CHG_HS_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) USB_LINK_HOST_CHG_HS_CHIRP_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) USB_LINK_DEDICATED_CHG_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) USB_LINK_ACA_RID_A_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) USB_LINK_ACA_RID_B_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) USB_LINK_ACA_RID_C_NM_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) USB_LINK_ACA_RID_C_HS_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) USB_LINK_ACA_RID_C_HS_CHIRP_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) USB_LINK_HM_IDGND_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) USB_LINK_RESERVED_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) USB_LINK_NOT_VALID_LINK_8500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) enum ab8505_usb_link_status {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) USB_LINK_NOT_CONFIGURED_8505 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) USB_LINK_STD_HOST_NC_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) USB_LINK_STD_HOST_C_NS_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) USB_LINK_STD_HOST_C_S_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) USB_LINK_CDP_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) USB_LINK_RESERVED0_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) USB_LINK_RESERVED1_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) USB_LINK_DEDICATED_CHG_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) USB_LINK_ACA_RID_A_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) USB_LINK_ACA_RID_B_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) USB_LINK_ACA_RID_C_NM_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) USB_LINK_RESERVED2_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) USB_LINK_RESERVED3_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) USB_LINK_HM_IDGND_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) USB_LINK_CHARGERPORT_NOT_OK_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) USB_LINK_CHARGER_DM_HIGH_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) USB_LINK_STD_UPSTREAM_NO_IDGNG_NO_VBUS_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) USB_LINK_STD_UPSTREAM_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) USB_LINK_CHARGER_SE1_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) USB_LINK_CARKIT_CHGR_1_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) USB_LINK_CARKIT_CHGR_2_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) USB_LINK_ACA_DOCK_CHGR_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) enum ab8500_usb_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) USB_IDLE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) USB_PERIPHERAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) USB_DEDICATED_CHG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) USB_UART
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* Register USB_LINK_STATUS interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define AB8500_USB_FLAG_USE_LINK_STATUS_IRQ (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /* Register ID_WAKEUP_F interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #define AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* Register VBUS_DET_F interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #define AB8500_USB_FLAG_USE_VBUS_DET_IRQ (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* Driver is using the ab-iddet driver*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define AB8500_USB_FLAG_USE_AB_IDDET (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* Enable setting regulators voltage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct ab8500_usb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct usb_phy phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct ab8500 *ab8500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) unsigned vbus_draw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct work_struct phy_dis_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) enum ab8500_usb_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct clk *sysclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct regulator *v_ape;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct regulator *v_musb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct regulator *v_ulpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int saved_v_ulpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) int previous_link_status_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct pinctrl *pinctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct pinctrl_state *pins_sleep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) bool enabled_charging_detection;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) unsigned int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return container_of(x, struct ab8500_usb, phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static void ab8500_usb_wd_workaround(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) AB8500_SYS_CTRL2_BLOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) AB8500_MAIN_WD_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) AB8500_BIT_WD_CTRL_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) udelay(AB8500_WD_KICK_DELAY_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) AB8500_SYS_CTRL2_BLOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) AB8500_MAIN_WD_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) (AB8500_BIT_WD_CTRL_ENABLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) | AB8500_BIT_WD_CTRL_KICK));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) udelay(AB8500_WD_V11_DISABLE_DELAY_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) AB8500_SYS_CTRL2_BLOCK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) AB8500_MAIN_WD_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static void ab8500_usb_regulator_enable(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int ret, volt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ret = regulator_enable(ab->v_ape);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) dev_err(ab->dev, "Failed to enable v-ape\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) ab->saved_v_ulpi = regulator_get_voltage(ab->v_ulpi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (ab->saved_v_ulpi < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) dev_err(ab->dev, "Failed to get v_ulpi voltage\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) ret = regulator_set_voltage(ab->v_ulpi, 1300000, 1350000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) dev_err(ab->dev, "Failed to set the Vintcore to 1.3V, ret=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) ret = regulator_set_load(ab->v_ulpi, 28000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) ret = regulator_enable(ab->v_ulpi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) dev_err(ab->dev, "Failed to enable vddulpivio18\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) volt = regulator_get_voltage(ab->v_ulpi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if ((volt != 1300000) && (volt != 1350000))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) dev_err(ab->dev, "Vintcore is not set to 1.3V volt=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) volt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ret = regulator_enable(ab->v_musb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) dev_err(ab->dev, "Failed to enable musb_1v8\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) static void ab8500_usb_regulator_disable(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) regulator_disable(ab->v_musb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) regulator_disable(ab->v_ulpi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* USB is not the only consumer of Vintcore, restore old settings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (ab->saved_v_ulpi > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = regulator_set_voltage(ab->v_ulpi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) ab->saved_v_ulpi, ab->saved_v_ulpi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) dev_err(ab->dev, "Failed to set the Vintcore to %duV, ret=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ab->saved_v_ulpi, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) ret = regulator_set_load(ab->v_ulpi, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) regulator_disable(ab->v_ape);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static void ab8500_usb_wd_linkstatus(struct ab8500_usb *ab, u8 bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* Workaround for v2.0 bug # 31952 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (is_ab8500_2p0(ab->ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) bit, bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) udelay(AB8500_V20_31952_DISABLE_DELAY_US);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) u8 bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) AB8500_BIT_PHY_CTRL_DEVICE_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /* mux and configure USB pins to DEFAULT state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) ab->pinctrl = pinctrl_get_select(ab->dev, PINCTRL_STATE_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (IS_ERR(ab->pinctrl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) dev_err(ab->dev, "could not get/set default pinstate\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (clk_prepare_enable(ab->sysclk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) dev_err(ab->dev, "can't prepare/enable clock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) ab8500_usb_regulator_enable(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) bit, bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) u8 bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) AB8500_BIT_PHY_CTRL_DEVICE_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ab8500_usb_wd_linkstatus(ab, bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) bit, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /* Needed to disable the phy.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ab8500_usb_wd_workaround(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) clk_disable_unprepare(ab->sysclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) ab8500_usb_regulator_disable(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (!IS_ERR(ab->pinctrl)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) /* configure USB pins to SLEEP state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) ab->pins_sleep = pinctrl_lookup_state(ab->pinctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) PINCTRL_STATE_SLEEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (IS_ERR(ab->pins_sleep))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) dev_dbg(ab->dev, "could not get sleep pinstate\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) else if (pinctrl_select_state(ab->pinctrl, ab->pins_sleep))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) dev_err(ab->dev, "could not set pins to sleep state\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * as USB pins are shared with iddet, release them to allow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * iddet to request them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) pinctrl_put(ab->pinctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_enable(ab, true)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) #define ab8500_usb_host_phy_dis(ab) ab8500_usb_phy_disable(ab, true)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) #define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) #define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static int ab8505_usb_link_status_update(struct ab8500_usb *ab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) enum ab8505_usb_link_status lsts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) enum ux500_musb_vbus_id_status event = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) dev_dbg(ab->dev, "ab8505_usb_link_status_update %d\n", lsts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * Spurious link_status interrupts are seen at the time of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * disconnection of a device in RIDA state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8505 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) (lsts == USB_LINK_STD_HOST_NC_8505))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) ab->previous_link_status_state = lsts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) switch (lsts) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) case USB_LINK_ACA_RID_B_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) event = UX500_MUSB_RIDB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) case USB_LINK_NOT_CONFIGURED_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) case USB_LINK_RESERVED0_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) case USB_LINK_RESERVED1_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) case USB_LINK_RESERVED2_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) case USB_LINK_RESERVED3_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) ab->phy.otg->default_a = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) ab->vbus_draw = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (event != UX500_MUSB_RIDB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) event = UX500_MUSB_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) * Fallback to default B_IDLE as nothing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * is connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) ab->phy.otg->state = OTG_STATE_B_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) case USB_LINK_ACA_RID_C_NM_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) event = UX500_MUSB_RIDC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) case USB_LINK_STD_HOST_NC_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) case USB_LINK_STD_HOST_C_NS_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) case USB_LINK_STD_HOST_C_S_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) case USB_LINK_CDP_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (ab->mode == USB_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ab->mode = USB_PERIPHERAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) ab8500_usb_peri_phy_en(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) UX500_MUSB_PREPARE, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (event != UX500_MUSB_RIDC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) event = UX500_MUSB_VBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) case USB_LINK_ACA_RID_A_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) case USB_LINK_ACA_DOCK_CHGR_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) event = UX500_MUSB_RIDA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) case USB_LINK_HM_IDGND_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) if (ab->mode == USB_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) ab->mode = USB_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ab8500_usb_host_phy_en(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) UX500_MUSB_PREPARE, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) ab->phy.otg->default_a = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (event != UX500_MUSB_RIDA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) event = UX500_MUSB_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) event, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) case USB_LINK_DEDICATED_CHG_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) ab->mode = USB_DEDICATED_CHG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) event = UX500_MUSB_CHARGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) event, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * FIXME: For now we rely on the boot firmware to set up the necessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * PHY/pin configuration for UART mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * AB8505 does not seem to report any status change for UART cables,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * possibly because it cannot detect them autonomously.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * We may need to measure the ID resistance manually to reliably
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * detect UART cables after bootup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) case USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) case USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8505:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (ab->mode == USB_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) ab->mode = USB_UART;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ab8500_usb_peri_phy_en(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) static int ab8500_usb_link_status_update(struct ab8500_usb *ab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) enum ab8500_usb_link_status lsts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) enum ux500_musb_vbus_id_status event = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) dev_dbg(ab->dev, "ab8500_usb_link_status_update %d\n", lsts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) * Spurious link_status interrupts are seen in case of a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) * disconnection of a device in IDGND and RIDA stage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8500 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) (lsts == USB_LINK_STD_HOST_C_NS_8500 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) lsts == USB_LINK_STD_HOST_NC_8500))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8500 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) lsts == USB_LINK_STD_HOST_NC_8500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ab->previous_link_status_state = lsts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) switch (lsts) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) case USB_LINK_ACA_RID_B_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) event = UX500_MUSB_RIDB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) case USB_LINK_NOT_CONFIGURED_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) case USB_LINK_NOT_VALID_LINK_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ab->phy.otg->default_a = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) ab->vbus_draw = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (event != UX500_MUSB_RIDB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) event = UX500_MUSB_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /* Fallback to default B_IDLE as nothing is connected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ab->phy.otg->state = OTG_STATE_B_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) usb_phy_set_event(&ab->phy, USB_EVENT_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) case USB_LINK_ACA_RID_C_NM_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) case USB_LINK_ACA_RID_C_HS_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) case USB_LINK_ACA_RID_C_HS_CHIRP_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) event = UX500_MUSB_RIDC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) case USB_LINK_STD_HOST_NC_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) case USB_LINK_STD_HOST_C_NS_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) case USB_LINK_STD_HOST_C_S_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) case USB_LINK_HOST_CHG_NM_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) case USB_LINK_HOST_CHG_HS_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) case USB_LINK_HOST_CHG_HS_CHIRP_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (ab->mode == USB_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) ab->mode = USB_PERIPHERAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) ab8500_usb_peri_phy_en(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) UX500_MUSB_PREPARE, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) usb_phy_set_event(&ab->phy, USB_EVENT_ENUMERATED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (event != UX500_MUSB_RIDC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) event = UX500_MUSB_VBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) case USB_LINK_ACA_RID_A_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) event = UX500_MUSB_RIDA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) case USB_LINK_HM_IDGND_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (ab->mode == USB_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) ab->mode = USB_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) ab8500_usb_host_phy_en(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) UX500_MUSB_PREPARE, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) ab->phy.otg->default_a = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (event != UX500_MUSB_RIDA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) event = UX500_MUSB_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) event, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) case USB_LINK_DEDICATED_CHG_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) ab->mode = USB_DEDICATED_CHG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) event = UX500_MUSB_CHARGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) event, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) usb_phy_set_event(&ab->phy, USB_EVENT_CHARGER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) case USB_LINK_RESERVED_8500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) * Connection Sequence:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * 1. Link Status Interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * 2. Enable AB clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * 3. Enable AB regulators
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * 4. Enable USB phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * 5. Reset the musb controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * 6. Switch the ULPI GPIO pins to function mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * 7. Enable the musb Peripheral5 clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * 8. Restore MUSB context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static int abx500_usb_link_status_update(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) u8 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (is_ab8500(ab->ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) enum ab8500_usb_link_status lsts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) ret = abx500_get_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) AB8500_USB, AB8500_USB_LINE_STAT_REG, ®);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) lsts = (reg >> 3) & 0x0F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) ret = ab8500_usb_link_status_update(ab, lsts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) } else if (is_ab8505(ab->ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) enum ab8505_usb_link_status lsts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) ret = abx500_get_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) AB8500_USB, AB8505_USB_LINE_STAT_REG, ®);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) lsts = (reg >> 3) & 0x1F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ret = ab8505_usb_link_status_update(ab, lsts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * Disconnection Sequence:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) * 1. Disconnect Interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * 2. Disable regulators
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * 3. Disable AB clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * 4. Disable the Phy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * 5. Link Status Interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) * 6. Disable Musb Clock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) static irqreturn_t ab8500_usb_disconnect_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct ab8500_usb *ab = (struct ab8500_usb *) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) enum usb_phy_events event = USB_EVENT_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /* Link status will not be updated till phy is disabled. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (ab->mode == USB_HOST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) ab->phy.otg->default_a = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) ab->vbus_draw = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) event, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) ab8500_usb_host_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (ab->mode == USB_PERIPHERAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) event, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) ab8500_usb_peri_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) atomic_notifier_call_chain(&ab->phy.notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) UX500_MUSB_CLEAN, &ab->vbus_draw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) ab->phy.otg->default_a = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) ab->vbus_draw = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (ab->mode == USB_UART) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) ab8500_usb_peri_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (is_ab8500_2p0(ab->ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (ab->mode == USB_DEDICATED_CHG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) ab8500_usb_wd_linkstatus(ab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) AB8500_BIT_PHY_CTRL_DEVICE_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) AB8500_BIT_PHY_CTRL_DEVICE_EN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) static irqreturn_t ab8500_usb_link_status_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct ab8500_usb *ab = (struct ab8500_usb *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) abx500_usb_link_status_update(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) static void ab8500_usb_phy_disable_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) struct ab8500_usb *ab = container_of(work, struct ab8500_usb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) phy_dis_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (!ab->phy.otg->host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) ab8500_usb_host_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (!ab->phy.otg->gadget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) ab8500_usb_peri_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) /* TODO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) static int ab8500_usb_set_peripheral(struct usb_otg *otg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) struct usb_gadget *gadget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) struct ab8500_usb *ab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (!otg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ab = phy_to_ab(otg->usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) ab->phy.otg->gadget = gadget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) /* Some drivers call this function in atomic context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) * Do not update ab8500 registers directly till this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) * is fixed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if ((ab->mode != USB_IDLE) && !gadget) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) schedule_work(&ab->phy_dis_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) struct ab8500_usb *ab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (!otg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) ab = phy_to_ab(otg->usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) ab->phy.otg->host = host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /* Some drivers call this function in atomic context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * Do not update ab8500 registers directly till this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * is fixed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if ((ab->mode != USB_IDLE) && !host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) ab->mode = USB_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) schedule_work(&ab->phy_dis_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) static void ab8500_usb_restart_phy(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) AB8500_BIT_PHY_CTRL_DEVICE_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) AB8500_BIT_PHY_CTRL_DEVICE_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) udelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) AB8500_BIT_PHY_CTRL_DEVICE_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) AB8500_BIT_PHY_CTRL_HOST_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) AB8500_BIT_PHY_CTRL_HOST_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) udelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) AB8500_USB, AB8500_USB_PHY_CTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) AB8500_BIT_PHY_CTRL_HOST_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) static int ab8500_usb_regulator_get(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) ab->v_ape = devm_regulator_get(ab->dev, "v-ape");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (IS_ERR(ab->v_ape)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) dev_err(ab->dev, "Could not get v-ape supply\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) err = PTR_ERR(ab->v_ape);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) ab->v_ulpi = devm_regulator_get(ab->dev, "vddulpivio18");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (IS_ERR(ab->v_ulpi)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) dev_err(ab->dev, "Could not get vddulpivio18 supply\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) err = PTR_ERR(ab->v_ulpi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) ab->v_musb = devm_regulator_get(ab->dev, "musb_1v8");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) if (IS_ERR(ab->v_musb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) dev_err(ab->dev, "Could not get musb_1v8 supply\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) err = PTR_ERR(ab->v_musb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) static int ab8500_usb_irq_setup(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (ab->flags & AB8500_USB_FLAG_USE_LINK_STATUS_IRQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) err = devm_request_threaded_irq(&pdev->dev, irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) ab8500_usb_link_status_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) "usb-link-status", ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) dev_err(ab->dev, "request_irq failed for link status irq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) if (ab->flags & AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) err = devm_request_threaded_irq(&pdev->dev, irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) ab8500_usb_disconnect_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) "usb-id-fall", ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) dev_err(ab->dev, "request_irq failed for ID fall irq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) if (ab->flags & AB8500_USB_FLAG_USE_VBUS_DET_IRQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) irq = platform_get_irq_byname(pdev, "VBUS_DET_F");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) err = devm_request_threaded_irq(&pdev->dev, irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) ab8500_usb_disconnect_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) "usb-vbus-fall", ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) dev_err(ab->dev, "request_irq failed for Vbus fall irq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) static void ab8500_usb_set_ab8500_tuning_values(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) /* Enable the PBT/Bank 0x12 access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) err = abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) dev_err(ab->dev, "Failed to enable bank12 access err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) err = abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) err = abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) err = abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) /* Switch to normal mode/disable Bank 0x12 access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) err = abx500_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) dev_err(ab->dev, "Failed to switch bank12 access err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) /* Enable the PBT/Bank 0x12 access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) err = abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) 0x01, 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) dev_err(ab->dev, "Failed to enable bank12 access err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) err = abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) AB8500_DEBUG, AB8500_USB_PHY_TUNE1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) 0xC8, 0xC8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) err = abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) AB8500_DEBUG, AB8500_USB_PHY_TUNE2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) 0x60, 0x60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) err = abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) AB8500_DEBUG, AB8500_USB_PHY_TUNE3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) 0xFC, 0x80);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) /* Switch to normal mode/disable Bank 0x12 access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) err = abx500_mask_and_set_register_interruptible(ab->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) 0x00, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) dev_err(ab->dev, "Failed to switch bank12 access err=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) static int ab8500_usb_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) struct ab8500_usb *ab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) struct ab8500 *ab8500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) struct usb_otg *otg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) int rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) ab8500 = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) rev = abx500_get_chip_id(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) if (is_ab8500_1p1_or_earlier(ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) dev_err(&pdev->dev, "Unsupported AB8500 chip rev=%d\n", rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) ab = devm_kzalloc(&pdev->dev, sizeof(*ab), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) if (!ab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (!otg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) ab->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) ab->ab8500 = ab8500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) ab->phy.dev = ab->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) ab->phy.otg = otg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) ab->phy.label = "ab8500";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) ab->phy.set_suspend = ab8500_usb_set_suspend;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) ab->phy.otg->state = OTG_STATE_UNDEFINED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) otg->usb_phy = &ab->phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) otg->set_host = ab8500_usb_set_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) otg->set_peripheral = ab8500_usb_set_peripheral;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if (is_ab8500(ab->ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) AB8500_USB_FLAG_USE_VBUS_DET_IRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) } else if (is_ab8505(ab->ab8500)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) AB8500_USB_FLAG_USE_VBUS_DET_IRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) /* Disable regulator voltage setting for AB8500 <= v2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (is_ab8500_2p0_or_earlier(ab->ab8500))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) ab->flags &= ~AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) platform_set_drvdata(pdev, ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) /* all: Disable phy when called from set_host and set_peripheral */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) err = ab8500_usb_regulator_get(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) ab->sysclk = devm_clk_get(ab->dev, "sysclk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) if (IS_ERR(ab->sysclk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) dev_err(ab->dev, "Could not get sysclk.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) return PTR_ERR(ab->sysclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) err = ab8500_usb_irq_setup(pdev, ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) dev_err(&pdev->dev, "Can't register transceiver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) if (is_ab8500(ab->ab8500) && !is_ab8500_2p0_or_earlier(ab->ab8500))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) /* Phy tuning values for AB8500 > v2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) ab8500_usb_set_ab8500_tuning_values(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) else if (is_ab8505(ab->ab8500))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) /* Phy tuning values for AB8505 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) ab8500_usb_set_ab8505_tuning_values(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) /* Needed to enable ID detection. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) ab8500_usb_wd_workaround(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) * This is required for usb-link-status to work properly when a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) * cable is connected at boot time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) ab8500_usb_restart_phy(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) abx500_usb_link_status_update(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) static int ab8500_usb_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) struct ab8500_usb *ab = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) cancel_work_sync(&ab->phy_dis_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) usb_remove_phy(&ab->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) if (ab->mode == USB_HOST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ab8500_usb_host_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) else if (ab->mode == USB_PERIPHERAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) ab8500_usb_peri_phy_dis(ab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) static const struct platform_device_id ab8500_usb_devtype[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) { .name = "ab8500-usb", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) static struct platform_driver ab8500_usb_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) .probe = ab8500_usb_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) .remove = ab8500_usb_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) .id_table = ab8500_usb_devtype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) .name = "abx5x0-usb",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) static int __init ab8500_usb_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) return platform_driver_register(&ab8500_usb_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) subsys_initcall(ab8500_usb_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) static void __exit ab8500_usb_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) platform_driver_unregister(&ab8500_usb_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) module_exit(ab8500_usb_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) MODULE_AUTHOR("ST-Ericsson AB");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) MODULE_DESCRIPTION("AB8500 family usb transceiver driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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