[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>
#ifdef CONFIG_TWL6030_POWER

#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_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()
{
	/* set voltage to 3.0 and turnon for APP */
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, VMMC_CFG_VOLTATE, 0x15);
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, VMMC_CFG_STATE, 0x21);
}

void twl6030_usb_device_settings()
{
	u8 data = 0;

	/* Select APP Group and set state to ON */
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, VUSB_CFG_STATE, 0x21);

	twl6030_i2c_read_u8(TWL6030_CHIP_PM, MISC2, &data);
	data |= 0x10;

	/* Select the input supply for VBUS regulator */
	twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC2, data);
}
#endif
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	*/
	7	#include <config.h>
	8	#ifdef CONFIG_TWL6030_POWER
	9
	10	#include <twl6030.h>
	11
fc889503 OK	12	static struct twl6030_data *twl;
	13
	14	static struct twl6030_data twl6030_info = {
	15	.chip_type = chip_TWL6030,
	16	.adc_rbase = GPCH0_LSB,
	17	.adc_ctrl = CTRL_P2,
	18	.adc_enable = CTRL_P2_SP2,
	19	.vbat_mult = TWL6030_VBAT_MULT,
	20	.vbat_shift = TWL6030_VBAT_SHIFT,
	21	};
	22
340e6c83 OK	23	static struct twl6030_data twl6032_info = {
	24	.chip_type = chip_TWL6032,
	25	.adc_rbase = TWL6032_GPCH0_LSB,
	26	.adc_ctrl = TWL6032_CTRL_P1,
	27	.adc_enable = CTRL_P1_SP1,
	28	.vbat_mult = TWL6032_VBAT_MULT,
	29	.vbat_shift = TWL6032_VBAT_SHIFT,
	30	};
	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
	75	void twl6030_stop_usb_charging(void)
	76	{
345ef204	77	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
3e664f6d B	78
	79	return;
	80	}
	81
516799f6 SS	82	void twl6030_start_usb_charging(void)
516799f6 SS	83	{
345ef204 NM	84	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	85	CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
	86	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	87	CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
	88	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	89	CONTROLLER_INT_MASK, MBAT_TEMP);
	90	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	91	CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
	92	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	93	CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
	94	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
	95	CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
	96	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
516799f6	97	/* Enable USB charging */
345ef204 NM	98	twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
345ef204 NM	99	CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
516799f6 SS	100	return;
	101	}
	102
3e664f6d B	103	int twl6030_get_battery_current(void)
	104	{
	105	int battery_current = 0;
	106	u8 msb = 0;
	107	u8 lsb = 0;
	108
345ef204 NM	109	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
345ef204 NM	110	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
3e664f6d B	111	battery_current = ((msb << 8) \| lsb);
	112
	113	/* convert 10 bit signed number to 16 bit signed number */
	114	if (battery_current >= 0x2000)
	115	battery_current = (battery_current - 0x4000);
	116
	117	battery_current = battery_current * 3000 / 4096;
	118	printf("Battery Current: %d mA\n", battery_current);
	119
	120	return battery_current;
	121	}
	122
	123	int twl6030_get_battery_voltage(void)
	124	{
	125	int battery_volt = 0;
	126	int ret = 0;
340e6c83 OK	127	u8 vbatch;
	128
	129	if (twl->chip_type == chip_TWL6030) {
	130	vbatch = TWL6030_GPADC_VBAT_CHNL;
	131	} else {
	132	ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
	133	TWL6032_GPSELECT_ISB,
	134	TWL6032_GPADC_VBAT_CHNL);
	135	if (ret)
	136	return ret;
	137	vbatch = 0;
	138	}
3e664f6d B	139
	140	/* Start GPADC SW conversion */
	141	ret = twl6030_gpadc_sw2_trigger();
	142	if (ret) {
	143	printf("Failed to convert battery voltage\n");
	144	return ret;
	145	}
	146
	147	/* measure Vbat voltage */
340e6c83	148	battery_volt = twl6030_gpadc_read_channel(vbatch);
3e664f6d B	149	if (battery_volt < 0) {
	150	printf("Failed to read battery voltage\n");
	151	return ret;
	152	}
fc889503	153	battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
3e664f6d B	154	printf("Battery Voltage: %d mV\n", battery_volt);
	155
	156	return battery_volt;
	157	}
	158
516799f6 SS	159	void twl6030_init_battery_charging(void)
516799f6 SS	160	{
340e6c83	161	u8 val = 0;
3e664f6d B	162	int battery_volt = 0;
	163	int ret = 0;
	164
340e6c83 OK	165	ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
	166	if (ret) {
	167	puts("twl6030_init_battery_charging(): could not determine chip!\n");
	168	return;
	169	}
	170	if (val == 0x30) {
	171	twl = &twl6030_info;
	172	} else if (val == 0x32) {
	173	twl = &twl6032_info;
	174	} else {
	175	puts("twl6030_init_battery_charging(): unsupported chip type\n");
	176	return;
	177	}
fc889503	178
3e664f6d	179	/* Enable VBAT measurement */
340e6c83 OK	180	if (twl->chip_type == chip_TWL6030) {
	181	twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
	182	twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
	183	TWL6030_GPADC_CTRL,
	184	GPADC_CTRL_SCALER_DIV4);
	185	} else {
	186	twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
	187	TWL6032_GPADC_CTRL2,
	188	GPADC_CTRL2_CH18_SCALER_EN);
	189	}
3e664f6d B	190
3e664f6d B	191	/* Enable GPADC module */
345ef204	192	ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS \| GPADCS);
3e664f6d B	193	if (ret) {
	194	printf("Failed to enable GPADC\n");
	195	return;
	196	}
	197
	198	battery_volt = twl6030_get_battery_voltage();
	199	if (battery_volt < 0)
	200	return;
	201
	202	if (battery_volt < 3000)
	203	printf("Main battery voltage too low!\n");
	204
	205	/* Check for the presence of USB charger */
340e6c83	206	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
3e664f6d B	207
3e664f6d B	208	/* check for battery presence indirectly via Fuel gauge */
340e6c83	209	if ((val & VBUS_DET) && (battery_volt < 3300))
3e664f6d B	210	twl6030_start_usb_charging();
3e664f6d B	211
516799f6 SS	212	return;
	213	}
	214
14fa2dd0 B	215	void twl6030_power_mmc_init()
	216	{
	217	/* set voltage to 3.0 and turnon for APP */
345ef204 NM	218	twl6030_i2c_write_u8(TWL6030_CHIP_PM, VMMC_CFG_VOLTATE, 0x15);
345ef204 NM	219	twl6030_i2c_write_u8(TWL6030_CHIP_PM, VMMC_CFG_STATE, 0x21);
14fa2dd0 B	220	}
14fa2dd0 B	221
516799f6 SS	222	void twl6030_usb_device_settings()
	223	{
	224	u8 data = 0;
	225
	226	/* Select APP Group and set state to ON */
345ef204	227	twl6030_i2c_write_u8(TWL6030_CHIP_PM, VUSB_CFG_STATE, 0x21);
516799f6	228
345ef204	229	twl6030_i2c_read_u8(TWL6030_CHIP_PM, MISC2, &data);
516799f6 SS	230	data \|= 0x10;
	231
	232	/* Select the input supply for VBUS regulator */
345ef204	233	twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC2, data);
516799f6 SS	234	}
516799f6 SS	235	#endif