[J-u-boot.git] / drivers / power / axp818.c

/*
 * AXP818 driver based on AXP221 driver
 *
 *
 * (C) Copyright 2015 Vishnu Patekar <[email protected]>
 *
 * Based on axp221.c
 * (C) Copyright 2014 Hans de Goede <[email protected]>
 * (C) Copyright 2013 Oliver Schinagl <[email protected]>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <errno.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pmic_bus.h>
#include <axp_pmic.h>

static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
	if (mvolt < min)
		mvolt = min;
	else if (mvolt > max)
		mvolt = max;

	return  (mvolt - min) / div;
}

int axp_set_dcdc1(unsigned int mvolt)
{
	int ret;
	u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
					AXP818_OUTPUT_CTRL1_DCDC1_EN);

	ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
				AXP818_OUTPUT_CTRL1_DCDC1_EN);
}

int axp_set_dcdc2(unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (mvolt >= 1220)
		cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
	else
		cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
					AXP818_OUTPUT_CTRL1_DCDC2_EN);

	ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
				AXP818_OUTPUT_CTRL1_DCDC2_EN);
}

int axp_set_dcdc3(unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (mvolt >= 1220)
		cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
	else
		cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
					AXP818_OUTPUT_CTRL1_DCDC3_EN);

	ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
				AXP818_OUTPUT_CTRL1_DCDC3_EN);
}

int axp_set_dcdc5(unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (mvolt >= 1140)
		cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
	else
		cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
					AXP818_OUTPUT_CTRL1_DCDC5_EN);

	ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
				AXP818_OUTPUT_CTRL1_DCDC5_EN);
}

int axp_set_aldo(int aldo_num, unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (aldo_num < 1 || aldo_num > 3)
		return -EINVAL;

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
				AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));

	cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
	ret = pmic_bus_write(AXP818_ALDO1_CTRL + (aldo_num - 1), cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
				AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
}

/* TODO: re-work other AXP drivers to consolidate ALDO functions. */
int axp_set_aldo1(unsigned int mvolt)
{
	return axp_set_aldo(1, mvolt);
}

int axp_set_aldo2(unsigned int mvolt)
{
	return axp_set_aldo(2, mvolt);
}

int axp_set_aldo3(unsigned int mvolt)
{
	return axp_set_aldo(3, mvolt);
}

int axp_set_dldo(int dldo_num, unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (dldo_num < 1 || dldo_num > 4)
		return -EINVAL;

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
				AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));

	cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
	if (dldo_num == 2 && mvolt > 3300)
		cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
	ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
				AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
}

int axp_set_eldo(int eldo_num, unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (eldo_num < 1 || eldo_num > 3)
		return -EINVAL;

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
				AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));

	cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
	ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
				AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
}

int axp_set_fldo(int fldo_num, unsigned int mvolt)
{
	int ret;
	u8 cfg;

	if (fldo_num < 1 || fldo_num > 3)
		return -EINVAL;

	if (mvolt == 0)
		return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
				AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));

	if (fldo_num < 3) {
		cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50);
		ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg);
	} else {
		/*
		 * Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2
		 * Since FLDOIN is unknown, test against DCDC5.
		 */
		if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT)
			ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL,
					       AXP818_FLDO2_3_CTRL_FLDO3_VOL);
		else
			ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL,
					       AXP818_FLDO2_3_CTRL_FLDO3_VOL);
	}
	if (ret)
		return ret;

	return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
				AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
}

int axp_set_sw(bool on)
{
	if (on)
		return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
					AXP818_OUTPUT_CTRL2_SW_EN);

	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
				AXP818_OUTPUT_CTRL2_SW_EN);
}

int axp_init(void)
{
	u8 axp_chip_id;
	int ret;

	ret = pmic_bus_init();
	if (ret)
		return ret;

	ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
	if (ret)
		return ret;

	if (!(axp_chip_id == 0x51))
		return -ENODEV;
	else
		return ret;

	return 0;
}
Commit	Line	Data
813c7372	1	/*
	2	* AXP818 driver based on AXP221 driver
	3	*
	4	*
	5	* (C) Copyright 2015 Vishnu Patekar <[email protected]>
	6	*
	7	* Based on axp221.c
	8	* (C) Copyright 2014 Hans de Goede <[email protected]>
	9	* (C) Copyright 2013 Oliver Schinagl <[email protected]>
	10	*
	11	* SPDX-License-Identifier: GPL-2.0+
	12	*/
	13
	14	#include <common.h>
	15	#include <errno.h>
	16	#include <asm/arch/gpio.h>
	17	#include <asm/arch/pmic_bus.h>
	18	#include <axp_pmic.h>
	19
	20	static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
	21	{
	22	if (mvolt < min)
	23	mvolt = min;
	24	else if (mvolt > max)
	25	mvolt = max;
	26
	27	return (mvolt - min) / div;
	28	}
	29
	30	int axp_set_dcdc1(unsigned int mvolt)
	31	{
	32	int ret;
	33	u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
	34
	35	if (mvolt == 0)
	36	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
	37	AXP818_OUTPUT_CTRL1_DCDC1_EN);
	38
	39	ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
	40	if (ret)
	41	return ret;
	42
	43	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
	44	AXP818_OUTPUT_CTRL1_DCDC1_EN);
	45	}
	46
	47	int axp_set_dcdc2(unsigned int mvolt)
	48	{
	49	int ret;
	50	u8 cfg;
	51
	52	if (mvolt >= 1220)
	53	cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
	54	else
	55	cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
	56
	57	if (mvolt == 0)
	58	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
	59	AXP818_OUTPUT_CTRL1_DCDC2_EN);
	60
	61	ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
	62	if (ret)
	63	return ret;
	64
65	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
66	AXP818_OUTPUT_CTRL1_DCDC2_EN);
67	}
68
69	int axp_set_dcdc3(unsigned int mvolt)
70	{
71	int ret;
72	u8 cfg;
73
74	if (mvolt >= 1220)
75	cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
76	else
77	cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
78
79	if (mvolt == 0)
80	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
81	AXP818_OUTPUT_CTRL1_DCDC3_EN);
82
83	ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
84	if (ret)
85	return ret;
86
87	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
88	AXP818_OUTPUT_CTRL1_DCDC3_EN);
89	}
90
91	int axp_set_dcdc5(unsigned int mvolt)
92	{
93	int ret;
94	u8 cfg;
95
96	if (mvolt >= 1140)
97	cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
98	else
99	cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
100
101	if (mvolt == 0)
102	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
103	AXP818_OUTPUT_CTRL1_DCDC5_EN);
104
105	ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
106	if (ret)
107	return ret;
108
109	return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
110	AXP818_OUTPUT_CTRL1_DCDC5_EN);
111	}
112
f3c5045a CYT	113	int axp_set_aldo(int aldo_num, unsigned int mvolt)
	114	{
	115	int ret;
	116	u8 cfg;
	117
	118	if (aldo_num < 1 \|\| aldo_num > 3)
	119	return -EINVAL;
	120
	121	if (mvolt == 0)
	122	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
	123	AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
	124
	125	cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
	126	ret = pmic_bus_write(AXP818_ALDO1_CTRL + (aldo_num - 1), cfg);
	127	if (ret)
	128	return ret;
	129
	130	return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
	131	AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
	132	}
	133
	134	/* TODO: re-work other AXP drivers to consolidate ALDO functions. */
	135	int axp_set_aldo1(unsigned int mvolt)
	136	{
	137	return axp_set_aldo(1, mvolt);
	138	}
	139
	140	int axp_set_aldo2(unsigned int mvolt)
	141	{
	142	return axp_set_aldo(2, mvolt);
	143	}
	144
	145	int axp_set_aldo3(unsigned int mvolt)
	146	{
	147	return axp_set_aldo(3, mvolt);
	148	}
	149
0509efb7 CYT	150	int axp_set_dldo(int dldo_num, unsigned int mvolt)
	151	{
	152	int ret;
	153	u8 cfg;
	154
	155	if (dldo_num < 1 \|\| dldo_num > 4)
	156	return -EINVAL;
	157
	158	if (mvolt == 0)
	159	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
	160	AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
	161
	162	cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
	163	if (dldo_num == 2 && mvolt > 3300)
	164	cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
	165	ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg);
	166	if (ret)
	167	return ret;
	168
	169	return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
	170	AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
	171	}
	172
	173	int axp_set_eldo(int eldo_num, unsigned int mvolt)
	174	{
	175	int ret;
	176	u8 cfg;
	177
	178	if (eldo_num < 1 \|\| eldo_num > 3)
	179	return -EINVAL;
	180
	181	if (mvolt == 0)
	182	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
	183	AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
	184
	185	cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
	186	ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
	187	if (ret)
	188	return ret;
	189
	190	return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
	191	AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
	192	}
	193
38491d9c CYT	194	int axp_set_fldo(int fldo_num, unsigned int mvolt)
	195	{
	196	int ret;
	197	u8 cfg;
	198
	199	if (fldo_num < 1 \|\| fldo_num > 3)
	200	return -EINVAL;
	201
	202	if (mvolt == 0)
	203	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
	204	AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
	205
	206	if (fldo_num < 3) {
	207	cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50);
	208	ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg);
	209	} else {
	210	/*
	211	* Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2
	212	* Since FLDOIN is unknown, test against DCDC5.
	213	*/
	214	if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT)
	215	ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL,
	216	AXP818_FLDO2_3_CTRL_FLDO3_VOL);
	217	else
	218	ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL,
	219	AXP818_FLDO2_3_CTRL_FLDO3_VOL);
	220	}
	221	if (ret)
	222	return ret;
	223
	224	return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
	225	AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
	226	}
	227
15278ccb CYT	228	int axp_set_sw(bool on)
	229	{
	230	if (on)
	231	return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
	232	AXP818_OUTPUT_CTRL2_SW_EN);
	233
	234	return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
	235	AXP818_OUTPUT_CTRL2_SW_EN);
	236	}
	237
813c7372	238	int axp_init(void)
	239	{
	240	u8 axp_chip_id;
	241	int ret;
	242
	243	ret = pmic_bus_init();
	244	if (ret)
	245	return ret;
	246
	247	ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
	248	if (ret)
	249	return ret;
	250
	251	if (!(axp_chip_id == 0x51))
	252	return -ENODEV;
	253	else
	254	return ret;
	255
	256	return 0;
	257	}