^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) * extcon driver for Basin Cove PMIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2019, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/extcon-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/mfd/intel_soc_pmic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/mfd/intel_soc_pmic_mrfld.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "extcon-intel.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define BCOVE_USBIDCTRL 0x19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define BCOVE_USBIDCTRL_ID BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define BCOVE_USBIDCTRL_ACA BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define BCOVE_USBIDCTRL_ALL (BCOVE_USBIDCTRL_ID | BCOVE_USBIDCTRL_ACA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define BCOVE_USBIDSTS 0x1a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define BCOVE_USBIDSTS_GND BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define BCOVE_USBIDSTS_RARBRC_MASK GENMASK(2, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define BCOVE_USBIDSTS_RARBRC_SHIFT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define BCOVE_USBIDSTS_NO_ACA 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define BCOVE_USBIDSTS_R_ID_A 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define BCOVE_USBIDSTS_R_ID_B 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define BCOVE_USBIDSTS_R_ID_C 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define BCOVE_USBIDSTS_FLOAT BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define BCOVE_USBIDSTS_SHORT BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define BCOVE_CHGRIRQ_ALL (BCOVE_CHGRIRQ_VBUSDET | BCOVE_CHGRIRQ_DCDET | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) BCOVE_CHGRIRQ_BATTDET | BCOVE_CHGRIRQ_USBIDDET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define BCOVE_CHGRCTRL0 0x4b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define BCOVE_CHGRCTRL0_CHGRRESET BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define BCOVE_CHGRCTRL0_EMRGCHREN BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define BCOVE_CHGRCTRL0_EXTCHRDIS BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define BCOVE_CHGRCTRL0_SWCONTROL BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define BCOVE_CHGRCTRL0_TTLCK BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define BCOVE_CHGRCTRL0_BIT_5 BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define BCOVE_CHGRCTRL0_BIT_6 BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define BCOVE_CHGRCTRL0_CHR_WDT_NOKICK BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct mrfld_extcon_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct extcon_dev *edev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) unsigned int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const unsigned int mrfld_extcon_cable[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) EXTCON_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) EXTCON_USB_HOST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) EXTCON_CHG_USB_SDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) EXTCON_CHG_USB_CDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) EXTCON_CHG_USB_DCP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) EXTCON_CHG_USB_ACA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) EXTCON_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int mrfld_extcon_clear(struct mrfld_extcon_data *data, unsigned int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) unsigned int mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return regmap_update_bits(data->regmap, reg, mask, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static int mrfld_extcon_set(struct mrfld_extcon_data *data, unsigned int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) unsigned int mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return regmap_update_bits(data->regmap, reg, mask, 0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int mrfld_extcon_sw_control(struct mrfld_extcon_data *data, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned int mask = BCOVE_CHGRCTRL0_SWCONTROL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct device *dev = data->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) ret = mrfld_extcon_set(data, BCOVE_CHGRCTRL0, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ret = mrfld_extcon_clear(data, BCOVE_CHGRCTRL0, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) dev_err(dev, "can't set SW control: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static int mrfld_extcon_get_id(struct mrfld_extcon_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct regmap *regmap = data->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) bool ground;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ret = regmap_read(regmap, BCOVE_USBIDSTS, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (id & BCOVE_USBIDSTS_FLOAT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return INTEL_USB_ID_FLOAT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) switch ((id & BCOVE_USBIDSTS_RARBRC_MASK) >> BCOVE_USBIDSTS_RARBRC_SHIFT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) case BCOVE_USBIDSTS_R_ID_A:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return INTEL_USB_RID_A;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) case BCOVE_USBIDSTS_R_ID_B:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return INTEL_USB_RID_B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) case BCOVE_USBIDSTS_R_ID_C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return INTEL_USB_RID_C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * PMIC A0 reports USBIDSTS_GND = 1 for ID_GND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * but PMIC B0 reports USBIDSTS_GND = 0 for ID_GND.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * Thus we must check this bit at last.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ground = id & BCOVE_USBIDSTS_GND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) switch ('A' + BCOVE_MAJOR(data->id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case 'A':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return ground ? INTEL_USB_ID_GND : INTEL_USB_ID_FLOAT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) case 'B':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return ground ? INTEL_USB_ID_FLOAT : INTEL_USB_ID_GND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /* Unknown or unsupported type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return INTEL_USB_ID_FLOAT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static int mrfld_extcon_role_detect(struct mrfld_extcon_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) bool usb_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) ret = mrfld_extcon_get_id(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) id = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) usb_host = (id == INTEL_USB_ID_GND) || (id == INTEL_USB_RID_A);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) extcon_set_state_sync(data->edev, EXTCON_USB_HOST, usb_host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static int mrfld_extcon_cable_detect(struct mrfld_extcon_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct regmap *regmap = data->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) unsigned int status, change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * It seems SCU firmware clears the content of BCOVE_CHGRIRQ1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * and makes it useless for OS. Instead we compare a previously
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * stored status to the current one, provided by BCOVE_SCHGRIRQ1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) ret = regmap_read(regmap, BCOVE_SCHGRIRQ1, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) change = status ^ data->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (!change)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (change & BCOVE_CHGRIRQ_USBIDDET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) ret = mrfld_extcon_role_detect(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) data->status = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static irqreturn_t mrfld_extcon_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct mrfld_extcon_data *data = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ret = mrfld_extcon_cable_detect(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) mrfld_extcon_clear(data, BCOVE_MIRQLVL1, BCOVE_LVL1_CHGR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return ret ? IRQ_NONE: IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static int mrfld_extcon_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct regmap *regmap = pmic->regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct mrfld_extcon_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) unsigned int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int irq, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) data->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) data->regmap = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) data->edev = devm_extcon_dev_allocate(dev, mrfld_extcon_cable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (IS_ERR(data->edev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) ret = devm_extcon_dev_register(dev, data->edev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) dev_err(dev, "can't register extcon device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) ret = devm_request_threaded_irq(dev, irq, NULL, mrfld_extcon_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) IRQF_ONESHOT | IRQF_SHARED, pdev->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) dev_err(dev, "can't register IRQ handler: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ret = regmap_read(regmap, BCOVE_ID, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) dev_err(dev, "can't read PMIC ID: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) data->id = id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) ret = mrfld_extcon_sw_control(data, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /* Get initial state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) mrfld_extcon_role_detect(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * Cached status value is used for cable detection, see comments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * in mrfld_extcon_cable_detect(), we need to sync cached value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * with a real state of the hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) regmap_read(regmap, BCOVE_SCHGRIRQ1, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) data->status = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) mrfld_extcon_clear(data, BCOVE_MIRQLVL1, BCOVE_LVL1_CHGR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) mrfld_extcon_clear(data, BCOVE_MCHGRIRQ1, BCOVE_CHGRIRQ_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) mrfld_extcon_set(data, BCOVE_USBIDCTRL, BCOVE_USBIDCTRL_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) platform_set_drvdata(pdev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static int mrfld_extcon_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct mrfld_extcon_data *data = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) mrfld_extcon_sw_control(data, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static const struct platform_device_id mrfld_extcon_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) { .name = "mrfld_bcove_pwrsrc" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) MODULE_DEVICE_TABLE(platform, mrfld_extcon_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static struct platform_driver mrfld_extcon_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .name = "mrfld_bcove_pwrsrc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) .probe = mrfld_extcon_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) .remove = mrfld_extcon_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) .id_table = mrfld_extcon_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) module_platform_driver(mrfld_extcon_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) MODULE_DESCRIPTION("extcon driver for Intel Merrifield Basin Cove PMIC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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