[people/ms/u-boot.git] / drivers / power / twl6030.c

/*
 * (C) Copyright 2010
 * Texas Instruments, <www.ti.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <config.h>

#include <twl6030.h>

static struct twl6030_data *twl;

static struct twl6030_data twl6030_info = {
	.chip_type	= chip_TWL6030,
	.adc_rbase	= GPCH0_LSB,
	.adc_ctrl	= CTRL_P2,
	.adc_enable	= CTRL_P2_SP2,
	.vbat_mult	= TWL6030_VBAT_MULT,
	.vbat_shift	= TWL6030_VBAT_SHIFT,
};

static struct twl6030_data twl6032_info = {
	.chip_type	= chip_TWL6032,
	.adc_rbase	= TWL6032_GPCH0_LSB,
	.adc_ctrl	= TWL6032_CTRL_P1,
	.adc_enable	= CTRL_P1_SP1,
	.vbat_mult	= TWL6032_VBAT_MULT,
	.vbat_shift	= TWL6032_VBAT_SHIFT,
};


static int twl6030_gpadc_read_channel(u8 channel_no)
{
	u8 lsb = 0;
	u8 msb = 0;
	int ret = 0;

	ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
				  twl->adc_rbase + channel_no * 2, &lsb);
	if (ret)
		return ret;

	ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
				  twl->adc_rbase + 1 + channel_no * 2, &msb);
	if (ret)
		return ret;

	return (msb << 8) | lsb;
}

static int twl6030_gpadc_sw2_trigger(void)
{
	u8 val;
	int ret = 0;

	ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
				   twl->adc_ctrl, twl->adc_enable);
	if (ret)
		return ret;

	/* Waiting until the SW1 conversion ends*/
	val =  CTRL_P2_BUSY;

	while (!((val & CTRL_P2_EOCP2) && (!(val & CTRL_P2_BUSY)))) {
		ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
					  twl->adc_ctrl, &val);
		if (ret)
			return ret;
		udelay(1000);
	}

	return 0;
}

void twl6030_power_off(void)
{
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_PHOENIX_DEV_ON,
		TWL6030_PHOENIX_APP_DEVOFF | TWL6030_PHOENIX_CON_DEVOFF |
		TWL6030_PHOENIX_MOD_DEVOFF);
}

void twl6030_stop_usb_charging(void)
{
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);

	return;
}

void twl6030_start_usb_charging(void)
{
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CONTROLLER_INT_MASK, MBAT_TEMP);
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
	/* Enable USB charging */
	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
			     CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
	return;
}

int twl6030_get_battery_current(void)
{
	int battery_current = 0;
	u8 msb = 0;
	u8 lsb = 0;

	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
	battery_current = ((msb << 8) | lsb);

	/* convert 10 bit signed number to 16 bit signed number */
	if (battery_current >= 0x2000)
		battery_current = (battery_current - 0x4000);

	battery_current = battery_current * 3000 / 4096;
	printf("Battery Current: %d mA\n", battery_current);

	return battery_current;
}

int twl6030_get_battery_voltage(void)
{
	int battery_volt = 0;
	int ret = 0;
	u8 vbatch;

	if (twl->chip_type == chip_TWL6030) {
		vbatch = TWL6030_GPADC_VBAT_CHNL;
	} else {
		ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
					   TWL6032_GPSELECT_ISB,
					   TWL6032_GPADC_VBAT_CHNL);
		if (ret)
			return ret;
		vbatch = 0;
	}

	/* Start GPADC SW conversion */
	ret = twl6030_gpadc_sw2_trigger();
	if (ret) {
		printf("Failed to convert battery voltage\n");
		return ret;
	}

	/* measure Vbat voltage */
	battery_volt = twl6030_gpadc_read_channel(vbatch);
	if (battery_volt < 0) {
		printf("Failed to read battery voltage\n");
		return ret;
	}
	battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
	printf("Battery Voltage: %d mV\n", battery_volt);

	return battery_volt;
}

void twl6030_init_battery_charging(void)
{
	u8 val = 0;
	int battery_volt = 0;
	int ret = 0;

	ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
	if (ret) {
		puts("twl6030_init_battery_charging(): could not determine chip!\n");
		return;
	}
	if (val == 0x30) {
		twl = &twl6030_info;
	} else if (val == 0x32) {
		twl = &twl6032_info;
	} else {
		puts("twl6030_init_battery_charging(): unsupported chip type\n");
		return;
	}

	/* Enable VBAT measurement */
	if (twl->chip_type == chip_TWL6030) {
		twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
		twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
				     TWL6030_GPADC_CTRL,
				     GPADC_CTRL_SCALER_DIV4);
	} else {
		twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
				     TWL6032_GPADC_CTRL2,
				     GPADC_CTRL2_CH18_SCALER_EN);
	}

	/* Enable GPADC module */
	ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS);
	if (ret) {
		printf("Failed to enable GPADC\n");
		return;
	}

	battery_volt = twl6030_get_battery_voltage();
	if (battery_volt < 0)
		return;

	if (battery_volt < 3000)
		printf("Main battery voltage too low!\n");

	/* Check for the presence of USB charger */
	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);

	/* check for battery presence indirectly via Fuel gauge */
	if ((val & VBUS_DET) && (battery_volt < 3300))
		twl6030_start_usb_charging();

	return;
}

void twl6030_power_mmc_init(int dev_index)
{
	u8 value = 0;

	if (dev_index == 0) {
		/* 3.0V voltage output for VMMC */
		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
			TWL6030_CFG_VOLTAGE_30);

		/* Enable P1 output for VMMC */
		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
			TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
	} else if (dev_index == 1) {
		twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT,
				    &value);
		/* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
		if (value & TWL6030_PH_STS_BOOT2) {
			/* 1.8V voltage output for VAUX1 */
			twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
				TWL6030_CFG_VOLTAGE_18);
		} else {
			/* 2.8V voltage output for VAUX1 */
			twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
				TWL6030_CFG_VOLTAGE_28);
		}

		/* Enable P1 output for VAUX */
		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
			TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
	}
}

void twl6030_usb_device_settings()
{
	u8 value = 0;

	/* 3.3V voltage output for VUSB */
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
		TWL6030_CFG_VOLTAGE_33);

	/* Enable P1 output for VUSB */
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
		TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);

	/* Select the input supply for VUSB regulator */
	twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
	value |= TWL6030_MISC2_VUSB_IN_VSYS;
	value &= ~TWL6030_MISC2_VUSB_IN_PMID;
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
}
Commit	Line	Data
516799f6 SS	1	/*
	2	* (C) Copyright 2010
	3	* Texas Instruments, <www.ti.com>
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
516799f6 SS	6	*/
516799f6 SS	7	#include <config.h>
516799f6 SS	8
	9	#include <twl6030.h>
	10
fc889503 OK	11	static struct twl6030_data *twl;
	12
	13	static struct twl6030_data twl6030_info = {
	14	.chip_type = chip_TWL6030,
	15	.adc_rbase = GPCH0_LSB,
	16	.adc_ctrl = CTRL_P2,
	17	.adc_enable = CTRL_P2_SP2,
	18	.vbat_mult = TWL6030_VBAT_MULT,
	19	.vbat_shift = TWL6030_VBAT_SHIFT,
	20	};
	21
340e6c83 OK	22	static struct twl6030_data twl6032_info = {
	23	.chip_type = chip_TWL6032,
	24	.adc_rbase = TWL6032_GPCH0_LSB,
	25	.adc_ctrl = TWL6032_CTRL_P1,
	26	.adc_enable = CTRL_P1_SP1,
	27	.vbat_mult = TWL6032_VBAT_MULT,
	28	.vbat_shift = TWL6032_VBAT_SHIFT,
	29	};
	30
d6a2042d	31
3e664f6d B	32	static int twl6030_gpadc_read_channel(u8 channel_no)
	33	{
	34	u8 lsb = 0;
	35	u8 msb = 0;
	36	int ret = 0;
	37
345ef204	38	ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
fc889503	39	twl->adc_rbase + channel_no * 2, &lsb);
3e664f6d B	40	if (ret)
	41	return ret;
	42
345ef204	43	ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
fc889503	44	twl->adc_rbase + 1 + channel_no * 2, &msb);
3e664f6d B	45	if (ret)
	46	return ret;
	47
	48	return (msb << 8) \| lsb;
	49	}
	50
	51	static int twl6030_gpadc_sw2_trigger(void)
	52	{
	53	u8 val;
	54	int ret = 0;
	55
fc889503 OK	56	ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
fc889503 OK	57	twl->adc_ctrl, twl->adc_enable);
3e664f6d B	58	if (ret)
	59	return ret;
	60
	61	/* Waiting until the SW1 conversion ends*/
	62	val = CTRL_P2_BUSY;
	63
	64	while (!((val & CTRL_P2_EOCP2) && (!(val & CTRL_P2_BUSY)))) {
fc889503 OK	65	ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
fc889503 OK	66	twl->adc_ctrl, &val);
3e664f6d B	67	if (ret)
	68	return ret;
	69	udelay(1000);
	70	}
	71
	72	return 0;
	73	}
	74
d6a2042d PK	75	void twl6030_power_off(void)
	76	{
	77	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_PHOENIX_DEV_ON,
	78	TWL6030_PHOENIX_APP_DEVOFF \| TWL6030_PHOENIX_CON_DEVOFF \|
	79	TWL6030_PHOENIX_MOD_DEVOFF);
	80	}
	81
3e664f6d B	82	void twl6030_stop_usb_charging(void)
3e664f6d B	83	{
345ef204	84	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
3e664f6d B	85
	86	return;
	87	}
	88
516799f6 SS	89	void twl6030_start_usb_charging(void)
516799f6 SS	90	{
345ef204 NM	91	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	92	CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
	93	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	94	CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
	95	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	96	CONTROLLER_INT_MASK, MBAT_TEMP);
	97	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	98	CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
	99	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	100	CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
	101	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	102	CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
	103	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
516799f6	104	/* Enable USB charging */
345ef204 NM	105	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
345ef204 NM	106	CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
516799f6 SS	107	return;
	108	}
	109
3e664f6d B	110	int twl6030_get_battery_current(void)
	111	{
	112	int battery_current = 0;
	113	u8 msb = 0;
	114	u8 lsb = 0;
	115
345ef204 NM	116	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
345ef204 NM	117	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
3e664f6d B	118	battery_current = ((msb << 8) \| lsb);
	119
	120	/* convert 10 bit signed number to 16 bit signed number */
	121	if (battery_current >= 0x2000)
	122	battery_current = (battery_current - 0x4000);
	123
	124	battery_current = battery_current * 3000 / 4096;
	125	printf("Battery Current: %d mA\n", battery_current);
	126
	127	return battery_current;
	128	}
	129
	130	int twl6030_get_battery_voltage(void)
	131	{
	132	int battery_volt = 0;
	133	int ret = 0;
340e6c83 OK	134	u8 vbatch;
	135
	136	if (twl->chip_type == chip_TWL6030) {
	137	vbatch = TWL6030_GPADC_VBAT_CHNL;
	138	} else {
	139	ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
	140	TWL6032_GPSELECT_ISB,
	141	TWL6032_GPADC_VBAT_CHNL);
	142	if (ret)
	143	return ret;
	144	vbatch = 0;
	145	}
3e664f6d B	146
	147	/* Start GPADC SW conversion */
	148	ret = twl6030_gpadc_sw2_trigger();
	149	if (ret) {
	150	printf("Failed to convert battery voltage\n");
	151	return ret;
	152	}
	153
	154	/* measure Vbat voltage */
340e6c83	155	battery_volt = twl6030_gpadc_read_channel(vbatch);
3e664f6d B	156	if (battery_volt < 0) {
	157	printf("Failed to read battery voltage\n");
	158	return ret;
	159	}
fc889503	160	battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
3e664f6d B	161	printf("Battery Voltage: %d mV\n", battery_volt);
	162
	163	return battery_volt;
	164	}
	165
516799f6 SS	166	void twl6030_init_battery_charging(void)
516799f6 SS	167	{
340e6c83	168	u8 val = 0;
3e664f6d B	169	int battery_volt = 0;
	170	int ret = 0;
	171
340e6c83 OK	172	ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
	173	if (ret) {
	174	puts("twl6030_init_battery_charging(): could not determine chip!\n");
	175	return;
	176	}
	177	if (val == 0x30) {
	178	twl = &twl6030_info;
	179	} else if (val == 0x32) {
	180	twl = &twl6032_info;
	181	} else {
	182	puts("twl6030_init_battery_charging(): unsupported chip type\n");
	183	return;
	184	}
fc889503	185
3e664f6d	186	/* Enable VBAT measurement */
340e6c83 OK	187	if (twl->chip_type == chip_TWL6030) {
	188	twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
	189	twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
	190	TWL6030_GPADC_CTRL,
	191	GPADC_CTRL_SCALER_DIV4);
	192	} else {
	193	twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
	194	TWL6032_GPADC_CTRL2,
	195	GPADC_CTRL2_CH18_SCALER_EN);
	196	}
3e664f6d B	197
3e664f6d B	198	/* Enable GPADC module */
345ef204	199	ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS \| GPADCS);
3e664f6d B	200	if (ret) {
	201	printf("Failed to enable GPADC\n");
	202	return;
	203	}
	204
	205	battery_volt = twl6030_get_battery_voltage();
	206	if (battery_volt < 0)
	207	return;
	208
	209	if (battery_volt < 3000)
	210	printf("Main battery voltage too low!\n");
	211
	212	/* Check for the presence of USB charger */
340e6c83	213	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
3e664f6d B	214
3e664f6d B	215	/* check for battery presence indirectly via Fuel gauge */
340e6c83	216	if ((val & VBUS_DET) && (battery_volt < 3300))
3e664f6d B	217	twl6030_start_usb_charging();
3e664f6d B	218
516799f6 SS	219	return;
	220	}
	221
a85362fb	222	void twl6030_power_mmc_init(int dev_index)
14fa2dd0	223	{
d7b6a754 PK	224	u8 value = 0;
d7b6a754 PK	225
a85362fb PK	226	if (dev_index == 0) {
	227	/* 3.0V voltage output for VMMC */
	228	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
	229	TWL6030_CFG_VOLTAGE_30);
	230
	231	/* Enable P1 output for VMMC */
	232	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
	233	TWL6030_CFG_STATE_P1 \| TWL6030_CFG_STATE_ON);
a85362fb	234	} else if (dev_index == 1) {
28a3a43d NR	235	twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT,
28a3a43d NR	236	&value);
a85362fb PK	237	/* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
	238	if (value & TWL6030_PH_STS_BOOT2) {
	239	/* 1.8V voltage output for VAUX1 */
	240	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
	241	TWL6030_CFG_VOLTAGE_18);
	242	} else {
	243	/* 2.8V voltage output for VAUX1 */
	244	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
	245	TWL6030_CFG_VOLTAGE_28);
	246	}
	247
	248	/* Enable P1 output for VAUX */
	249	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
	250	TWL6030_CFG_STATE_P1 \| TWL6030_CFG_STATE_ON);
d7b6a754	251	}
14fa2dd0 B	252	}
14fa2dd0 B	253
516799f6 SS	254	void twl6030_usb_device_settings()
516799f6 SS	255	{
c5dbae7c	256	u8 value = 0;
516799f6	257
0343f71f PK	258	/* 3.3V voltage output for VUSB */
	259	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
	260	TWL6030_CFG_VOLTAGE_33);
	261
c5dbae7c PK	262	/* Enable P1 output for VUSB */
	263	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
	264	TWL6030_CFG_STATE_P1 \| TWL6030_CFG_STATE_ON);
516799f6	265
c5dbae7c PK	266	/* Select the input supply for VUSB regulator */
	267	twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
	268	value \|= TWL6030_MISC2_VUSB_IN_VSYS;
6313c650	269	value &= ~TWL6030_MISC2_VUSB_IN_PMID;
c5dbae7c	270	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
516799f6	271	}