1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
6  * Copyright (C) 2005-2006 Texas Instruments, Inc.
37 #include <linux/mfd/twl4030-audio.h>
39 #include "twl-core.h"
42  * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
60 /* subchip/slave 0 - USB ID */
63 /* subchip/slave 1 - AUD ID */
70 /* subchip/slave 2 - AUX ID */
79 #define TWL5031_BASEADD_ACCESSORY	0x0074 /* Replaces Main Charge */
83 /* subchip/slave 3 - POWER ID */
98 /* subchip/slave 0 0x48 - POWER */
106 /* subchip/slave 1 0x49 - FEATURE */
117 /* subchip/slave 2 0x4A - DFT */
120 /* subchip/slave 3 0x4B - AUDIO */
135 /*----------------------------------------------------------------------*/
151 	u32 twl_idcode; /* TWL IDCODE Register value */
261 	/* 0x40 - 0x42  Unused */
379 /*----------------------------------------------------------------------*/
401 	return twl_priv ? twl_priv->twl_id : 0;  in twl_rev()
406  * twl_get_regmap - Get the regmap associated with the given module
416 	if (unlikely(!twl_priv || !twl_priv->ready)) {  in twl_get_regmap()
425 	sid = twl_priv->twl_map[mod_no].sid;  in twl_get_regmap()
426 	twl = &twl_priv->twl_modules[sid];  in twl_get_regmap()
428 	return twl->regmap;  in twl_get_regmap()
432  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
434  * @value: an array of num_bytes+1 containing data to write
440 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)  in twl_i2c_write()  argument
446 		return -EPERM;  in twl_i2c_write()
448 	ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg,  in twl_i2c_write()
449 				value, num_bytes);  in twl_i2c_write()
460  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
462  * @value: an array of num_bytes containing data to be read
468 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)  in twl_i2c_read()  argument
474 		return -EPERM;  in twl_i2c_read()
476 	ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg,  in twl_i2c_read()
477 			       value, num_bytes);  in twl_i2c_read()
488  * twl_regcache_bypass - Configure the regcache bypass for the regmap associated
500 		return -EPERM;  in twl_set_regcache_bypass()
508 /*----------------------------------------------------------------------*/
511  * twl_read_idcode_register - API to read the IDCODE register.
513  * Unlocks the IDCODE register and read the 32 bit value.
522 		pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);  in twl_read_idcode_register()
526 	err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),  in twl_read_idcode_register()
529 		pr_err("TWL4030: unable to read IDCODE -%d\n", err);  in twl_read_idcode_register()
535 		pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);  in twl_read_idcode_register()
541  * twl_get_type - API to get TWL Si type.
543  * Api to get the TWL Si type from IDCODE value.
547 	return TWL_SIL_TYPE(twl_priv->twl_idcode);  in twl_get_type()
552  * twl_get_version - API to get TWL Si version.
554  * Api to get the TWL Si version from IDCODE value.
558 	return TWL_SIL_REV(twl_priv->twl_idcode);  in twl_get_version()
563  * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
569 	u8 ctrl;  in twl_get_hfclk_rate()  local
572 	twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);  in twl_get_hfclk_rate()
574 	switch (ctrl & 0x3) {  in twl_get_hfclk_rate()
586 		rate = -EINVAL;  in twl_get_hfclk_rate()
605 		return ERR_PTR(-EPERM);  in add_numbered_child()
607 	sid = twl_priv->twl_map[mod_no].sid;  in add_numbered_child()
608 	twl = &twl_priv->twl_modules[sid];  in add_numbered_child()
612 		return ERR_PTR(-ENOMEM);  in add_numbered_child()
614 	pdev->dev.parent = &twl->client->dev;  in add_numbered_child()
619 			dev_dbg(&pdev->dev, "can't add platform_data\n");  in add_numbered_child()
632 			dev_dbg(&pdev->dev, "can't add irqs\n");  in add_numbered_child()
641 	device_init_wakeup(&pdev->dev, can_wakeup);  in add_numbered_child()
643 	return &pdev->dev;  in add_numbered_child()
647 	dev_err(&twl->client->dev, "failed to add device %s\n", name);  in add_numbered_child()
655 	return add_numbered_child(mod_no, name, -1, pdata, pdata_len,  in add_child()
671 		pdata->consumer_supplies = consumers;  in add_regulator_linked()
672 		pdata->num_consumer_supplies = num_consumers;  in add_regulator_linked()
675 	if (pdata->driver_data) {  in add_regulator_linked()
678 		tmp = pdata->driver_data;  in add_regulator_linked()
679 		tmp->features |= features;  in add_regulator_linked()
686 		pdata->driver_data = &drv_data;  in add_regulator_linked()
702  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
713 	if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {  in add_children()
715 				pdata->gpio, sizeof(*pdata->gpio),  in add_children()
721 	if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {  in add_children()
723 				pdata->keypad, sizeof(*pdata->keypad),  in add_children()
729 	if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&  in add_children()
732 				pdata->madc, sizeof(*pdata->madc),  in add_children()
753 		child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0,  in add_children()
760 		child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0,  in add_children()
766 	if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&  in add_children()
812 				pdata->usb, sizeof(*pdata->usb), true,  in add_children()
842 	if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&  in add_children()
844 		child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio",  in add_children()
845 				pdata->audio, sizeof(*pdata->audio),  in add_children()
853 		child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,  in add_children()
858 		child = add_regulator(TWL4030_REG_VIO, pdata->vio,  in add_children()
863 		child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,  in add_children()
868 		child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,  in add_children()
873 		child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,  in add_children()
878 		child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,  in add_children()
886 				pdata->vaux2, features);  in add_children()
890 		child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,  in add_children()
895 		child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,  in add_children()
900 		child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,  in add_children()
906 	/* maybe add LDOs that are omitted on cost-reduced parts */  in add_children()
909 		child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,  in add_children()
914 		child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,  in add_children()
919 		child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,  in add_children()
924 		child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,  in add_children()
929 		child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,  in add_children()
934 		child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,  in add_children()
940 	if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&  in add_children()
943 				pdata->bci, sizeof(*pdata->bci), false,  in add_children()
951 	if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) {  in add_children()
953 				  pdata->power, sizeof(*pdata->power), false,  in add_children()
962 /*----------------------------------------------------------------------*/
965  * These three functions initialize the on-chip clock framework,
996 	u8 ctrl = HFCLK_FREQ_26_MHZ;  in clocks_init()  local
1001 				"using bootloader value (unknown osc rate)\n");  in clocks_init()
1010 		ctrl = HFCLK_FREQ_19p2_MHZ;  in clocks_init()
1013 		ctrl = HFCLK_FREQ_26_MHZ;  in clocks_init()
1016 		ctrl = HFCLK_FREQ_38p4_MHZ;  in clocks_init()
1020 	ctrl |= HIGH_PERF_SQ;  in clocks_init()
1021 	if (clock && clock->ck32k_lowpwr_enable)  in clocks_init()
1022 		ctrl |= CK32K_LOWPWR_EN;  in clocks_init()
1025 	/* effect->MADC+USB ck en */  in clocks_init()
1026 	e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);  in clocks_init()
1033 /*----------------------------------------------------------------------*/
1051 		struct twl_client	*twl = &twl_priv->twl_modules[i];  in twl_remove()
1053 		if (twl->client && twl->client != client)  in twl_remove()
1054 			i2c_unregister_device(twl->client);  in twl_remove()
1055 		twl->client = NULL;  in twl_remove()
1057 	twl_priv->ready = false;  in twl_remove()
1062 	OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL),
1070 	struct twl4030_platform_data	*pdata = dev_get_platdata(&client->dev);  in twl_probe()
1071 	struct device_node		*node = client->dev.of_node;  in twl_probe()
1079 		dev_err(&client->dev, "no platform data\n");  in twl_probe()
1080 		return -EINVAL;  in twl_probe()
1084 		dev_dbg(&client->dev, "only one instance of %s allowed\n",  in twl_probe()
1086 		return -EBUSY;  in twl_probe()
1089 	pdev = platform_device_alloc(DRIVER_NAME, -1);  in twl_probe()
1091 		dev_err(&client->dev, "can't alloc pdev\n");  in twl_probe()
1092 		return -ENOMEM;  in twl_probe()
1101 	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {  in twl_probe()
1102 		dev_dbg(&client->dev, "can't talk I2C?\n");  in twl_probe()
1103 		status = -EIO;  in twl_probe()
1107 	twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),  in twl_probe()
1110 		status = -ENOMEM;  in twl_probe()
1114 	if ((id->driver_data) & TWL6030_CLASS) {  in twl_probe()
1115 		twl_priv->twl_id = TWL6030_CLASS_ID;  in twl_probe()
1116 		twl_priv->twl_map = &twl6030_map[0];  in twl_probe()
1118 		if ((id->driver_data) & TWL6032_SUBCLASS)  in twl_probe()
1119 			twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =  in twl_probe()
1123 		twl_priv->twl_id = TWL4030_CLASS_ID;  in twl_probe()
1124 		twl_priv->twl_map = &twl4030_map[0];  in twl_probe()
1129 	twl_priv->twl_modules = devm_kcalloc(&client->dev,  in twl_probe()
1133 	if (!twl_priv->twl_modules) {  in twl_probe()
1134 		status = -ENOMEM;  in twl_probe()
1139 		struct twl_client *twl = &twl_priv->twl_modules[i];  in twl_probe()
1142 			twl->client = client;  in twl_probe()
1144 			twl->client = i2c_new_dummy_device(client->adapter,  in twl_probe()
1145 						    client->addr + i);  in twl_probe()
1146 			if (IS_ERR(twl->client)) {  in twl_probe()
1147 				dev_err(&client->dev,  in twl_probe()
1149 				status = PTR_ERR(twl->client);  in twl_probe()
1154 		twl->regmap = devm_regmap_init_i2c(twl->client,  in twl_probe()
1156 		if (IS_ERR(twl->regmap)) {  in twl_probe()
1157 			status = PTR_ERR(twl->regmap);  in twl_probe()
1158 			dev_err(&client->dev,  in twl_probe()
1165 	twl_priv->ready = true;  in twl_probe()
1168 	clocks_init(&client->dev, pdata ? pdata->clock : NULL);  in twl_probe()
1173 		WARN(status < 0, "Error: reading twl_idcode register value\n");  in twl_probe()
1177 	if (client->irq) {  in twl_probe()
1179 			twl4030_init_chip_irq(id->name);  in twl_probe()
1180 			irq_base = twl4030_init_irq(&client->dev, client->irq);  in twl_probe()
1182 			irq_base = twl6030_init_irq(&client->dev, client->irq);  in twl_probe()
1192 	 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.  in twl_probe()
1218 			twl_auxdata_lookup[0].platform_data = pdata->gpio;  in twl_probe()
1220 					      &client->dev);  in twl_probe()
1222 		status = add_children(pdata, irq_base, id->driver_data);  in twl_probe()
1239 	if (client->irq)  in twl_suspend()
1240 		disable_irq(client->irq);  in twl_suspend()
1249 	if (client->irq)  in twl_resume()
1250 		enable_irq(client->irq);  in twl_resume()