[u-boot.git] / drivers / power / regulator / rk808.c

/*
 * Copyright (C) 2015 Google, Inc
 * Written by Simon Glass <[email protected]>
 *
 * Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
 * Copyright (C) 2012 rockchips
 * zyw <[email protected]>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <power/rk808_pmic.h>
#include <power/pmic.h>
#include <power/regulator.h>

#ifndef CONFIG_SPL_BUILD
#define ENABLE_DRIVER
#endif

struct rk808_reg_info {
	uint min_uv;
	uint step_uv;
	s8 vsel_reg;
	u8 vsel_bits;
};

static const struct rk808_reg_info rk808_buck[] = {
	{ 712500, 12500, REG_BUCK1_ON_VSEL, 6, },
	{ 712500, 12500, REG_BUCK2_ON_VSEL, 6, },
	{ 712500, 12500, -1, 6, },
	{ 1800000, 100000, REG_BUCK4_ON_VSEL, 4, },
};

static const struct rk808_reg_info rk808_ldo[] = {
	{ 1800000, 100000, LDO1_ON_VSEL, 5, },
	{ 1800000, 100000, LDO2_ON_VSEL, 5, },
	{ 800000, 100000, LDO3_ON_VSEL, 4, },
	{ 1800000, 100000, LDO4_ON_VSEL, 5, },
	{ 1800000, 100000, LDO5_ON_VSEL, 5, },
	{ 800000, 100000, LDO6_ON_VSEL, 5, },
	{ 800000, 100000, LDO7_ON_VSEL, 5, },
	{ 1800000, 100000, LDO8_ON_VSEL, 5, },
};


static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
{
	const struct rk808_reg_info *info = &rk808_buck[buck - 1];
	int mask = (1 << info->vsel_bits) - 1;
	int val;

	if (info->vsel_reg == -1)
		return -ENOSYS;
	val = (uvolt - info->min_uv) / info->step_uv;
	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
	      val);

	return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
}

static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
{
	uint mask;
	int ret;

	buck--;
	mask = 1 << buck;
	if (enable) {
		ret = pmic_clrsetbits(pmic, DCDC_ILMAX, 0, 3 << (buck * 2));
		if (ret)
			return ret;
		ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
		if (ret)
			return ret;
	}

	return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
}

#ifdef ENABLE_DRIVER
static int buck_get_value(struct udevice *dev)
{
	int buck = dev->driver_data - 1;
	const struct rk808_reg_info *info = &rk808_buck[buck];
	int mask = (1 << info->vsel_bits) - 1;
	int ret, val;

	if (info->vsel_reg == -1)
		return -ENOSYS;
	ret = pmic_reg_read(dev->parent, info->vsel_reg);
	if (ret < 0)
		return ret;
	val = ret & mask;

	return info->min_uv + val * info->step_uv;
}

static int buck_set_value(struct udevice *dev, int uvolt)
{
	int buck = dev->driver_data;

	return _buck_set_value(dev->parent, buck, uvolt);
}

static int buck_set_enable(struct udevice *dev, bool enable)
{
	int buck = dev->driver_data;

	return _buck_set_enable(dev->parent, buck, enable);
}

static bool buck_get_enable(struct udevice *dev)
{
	int buck = dev->driver_data - 1;
	int ret;
	uint mask;

	mask = 1 << buck;

	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
	if (ret < 0)
		return ret;

	return ret & mask ? true : false;
}

static int ldo_get_value(struct udevice *dev)
{
	int ldo = dev->driver_data - 1;
	const struct rk808_reg_info *info = &rk808_ldo[ldo];
	int mask = (1 << info->vsel_bits) - 1;
	int ret, val;

	if (info->vsel_reg == -1)
		return -ENOSYS;
	ret = pmic_reg_read(dev->parent, info->vsel_reg);
	if (ret < 0)
		return ret;
	val = ret & mask;

	return info->min_uv + val * info->step_uv;
}

static int ldo_set_value(struct udevice *dev, int uvolt)
{
	int ldo = dev->driver_data - 1;
	const struct rk808_reg_info *info = &rk808_ldo[ldo];
	int mask = (1 << info->vsel_bits) - 1;
	int val;

	if (info->vsel_reg == -1)
		return -ENOSYS;
	val = (uvolt - info->min_uv) / info->step_uv;
	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
	      val);

	return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
}

static int ldo_set_enable(struct udevice *dev, bool enable)
{
	int ldo = dev->driver_data - 1;
	uint mask;

	mask = 1 << ldo;

	return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
			       enable ? mask : 0);
}

static bool ldo_get_enable(struct udevice *dev)
{
	int ldo = dev->driver_data - 1;
	int ret;
	uint mask;

	mask = 1 << ldo;

	ret = pmic_reg_read(dev->parent, REG_LDO_EN);
	if (ret < 0)
		return ret;

	return ret & mask ? true : false;
}

static int switch_set_enable(struct udevice *dev, bool enable)
{
	int sw = dev->driver_data - 1;
	uint mask;

	mask = 1 << (sw + 5);

	return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
			       enable ? mask : 0);
}

static bool switch_get_enable(struct udevice *dev)
{
	int sw = dev->driver_data - 1;
	int ret;
	uint mask;

	mask = 1 << (sw + 5);

	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
	if (ret < 0)
		return ret;

	return ret & mask ? true : false;
}

static int rk808_buck_probe(struct udevice *dev)
{
	struct dm_regulator_uclass_platdata *uc_pdata;

	uc_pdata = dev_get_uclass_platdata(dev);

	uc_pdata->type = REGULATOR_TYPE_BUCK;
	uc_pdata->mode_count = 0;

	return 0;
}

static int rk808_ldo_probe(struct udevice *dev)
{
	struct dm_regulator_uclass_platdata *uc_pdata;

	uc_pdata = dev_get_uclass_platdata(dev);

	uc_pdata->type = REGULATOR_TYPE_LDO;
	uc_pdata->mode_count = 0;

	return 0;
}

static int rk808_switch_probe(struct udevice *dev)
{
	struct dm_regulator_uclass_platdata *uc_pdata;

	uc_pdata = dev_get_uclass_platdata(dev);

	uc_pdata->type = REGULATOR_TYPE_FIXED;
	uc_pdata->mode_count = 0;

	return 0;
}

static const struct dm_regulator_ops rk808_buck_ops = {
	.get_value  = buck_get_value,
	.set_value  = buck_set_value,
	.get_enable = buck_get_enable,
	.set_enable = buck_set_enable,
};

static const struct dm_regulator_ops rk808_ldo_ops = {
	.get_value  = ldo_get_value,
	.set_value  = ldo_set_value,
	.get_enable = ldo_get_enable,
	.set_enable = ldo_set_enable,
};

static const struct dm_regulator_ops rk808_switch_ops = {
	.get_enable = switch_get_enable,
	.set_enable = switch_set_enable,
};

U_BOOT_DRIVER(rk808_buck) = {
	.name = "rk808_buck",
	.id = UCLASS_REGULATOR,
	.ops = &rk808_buck_ops,
	.probe = rk808_buck_probe,
};

U_BOOT_DRIVER(rk808_ldo) = {
	.name = "rk808_ldo",
	.id = UCLASS_REGULATOR,
	.ops = &rk808_ldo_ops,
	.probe = rk808_ldo_probe,
};

U_BOOT_DRIVER(rk808_switch) = {
	.name = "rk808_switch",
	.id = UCLASS_REGULATOR,
	.ops = &rk808_switch_ops,
	.probe = rk808_switch_probe,
};
#endif

int rk808_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
{
	int ret;

	ret = _buck_set_value(pmic, buck, uvolt);
	if (ret)
		return ret;

	return _buck_set_enable(pmic, buck, true);
}
Commit	Line	Data
e1227764 SG	1	/*
	2	* Copyright (C) 2015 Google, Inc
	3	* Written by Simon Glass <[email protected]>
	4	*
	5	* Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
	6	* Copyright (C) 2012 rockchips
	7	* zyw <[email protected]>
	8	*
	9	* SPDX-License-Identifier: GPL-2.0+
	10	*/
	11
	12	#include <common.h>
	13	#include <dm.h>
	14	#include <errno.h>
	15	#include <power/rk808_pmic.h>
	16	#include <power/pmic.h>
	17	#include <power/regulator.h>
	18
	19	#ifndef CONFIG_SPL_BUILD
	20	#define ENABLE_DRIVER
	21	#endif
	22
	23	struct rk808_reg_info {
	24	uint min_uv;
	25	uint step_uv;
	26	s8 vsel_reg;
	27	u8 vsel_bits;
	28	};
	29
	30	static const struct rk808_reg_info rk808_buck[] = {
	31	{ 712500, 12500, REG_BUCK1_ON_VSEL, 6, },
	32	{ 712500, 12500, REG_BUCK2_ON_VSEL, 6, },
	33	{ 712500, 12500, -1, 6, },
	34	{ 1800000, 100000, REG_BUCK4_ON_VSEL, 4, },
	35	};
	36
	37	static const struct rk808_reg_info rk808_ldo[] = {
	38	{ 1800000, 100000, LDO1_ON_VSEL, 5, },
	39	{ 1800000, 100000, LDO2_ON_VSEL, 5, },
	40	{ 800000, 100000, LDO3_ON_VSEL, 4, },
	41	{ 1800000, 100000, LDO4_ON_VSEL, 5, },
	42	{ 1800000, 100000, LDO5_ON_VSEL, 5, },
	43	{ 800000, 100000, LDO6_ON_VSEL, 5, },
	44	{ 800000, 100000, LDO7_ON_VSEL, 5, },
	45	{ 1800000, 100000, LDO8_ON_VSEL, 5, },
	46	};
	47
	48
	49	static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
	50	{
	51	const struct rk808_reg_info *info = &rk808_buck[buck - 1];
	52	int mask = (1 << info->vsel_bits) - 1;
	53	int val;
	54
	55	if (info->vsel_reg == -1)
	56	return -ENOSYS;
	57	val = (uvolt - info->min_uv) / info->step_uv;
	58	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
	59	val);
	60
	61	return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
	62	}
	63
	64	static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
65	{
66	uint mask;
67	int ret;
68
69	buck--;
70	mask = 1 << buck;
71	if (enable) {
72	ret = pmic_clrsetbits(pmic, DCDC_ILMAX, 0, 3 << (buck * 2));
73	if (ret)
74	return ret;
75	ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
76	if (ret)
77	return ret;
78	}
79
80	return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
81	}
82
83	#ifdef ENABLE_DRIVER
84	static int buck_get_value(struct udevice *dev)
85	{
86	int buck = dev->driver_data - 1;
87	const struct rk808_reg_info *info = &rk808_buck[buck];
88	int mask = (1 << info->vsel_bits) - 1;
89	int ret, val;
90
91	if (info->vsel_reg == -1)
92	return -ENOSYS;
93	ret = pmic_reg_read(dev->parent, info->vsel_reg);
94	if (ret < 0)
95	return ret;
96	val = ret & mask;
97
98	return info->min_uv + val * info->step_uv;
99	}
100
101	static int buck_set_value(struct udevice *dev, int uvolt)
102	{
103	int buck = dev->driver_data;
104
105	return _buck_set_value(dev->parent, buck, uvolt);
106	}
107
108	static int buck_set_enable(struct udevice *dev, bool enable)
109	{
110	int buck = dev->driver_data;
111
112	return _buck_set_enable(dev->parent, buck, enable);
113	}
114
115	static bool buck_get_enable(struct udevice *dev)
116	{
117	int buck = dev->driver_data - 1;
118	int ret;
119	uint mask;
120
121	mask = 1 << buck;
122
123	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
124	if (ret < 0)
125	return ret;
126
127	return ret & mask ? true : false;
128	}
129
130	static int ldo_get_value(struct udevice *dev)
131	{
132	int ldo = dev->driver_data - 1;
133	const struct rk808_reg_info *info = &rk808_ldo[ldo];
134	int mask = (1 << info->vsel_bits) - 1;
135	int ret, val;
136
137	if (info->vsel_reg == -1)
138	return -ENOSYS;
139	ret = pmic_reg_read(dev->parent, info->vsel_reg);
140	if (ret < 0)
141	return ret;
142	val = ret & mask;
143
144	return info->min_uv + val * info->step_uv;
145	}
146
147	static int ldo_set_value(struct udevice *dev, int uvolt)
148	{
149	int ldo = dev->driver_data - 1;
150	const struct rk808_reg_info *info = &rk808_ldo[ldo];
151	int mask = (1 << info->vsel_bits) - 1;
152	int val;
153
154	if (info->vsel_reg == -1)
155	return -ENOSYS;
156	val = (uvolt - info->min_uv) / info->step_uv;
157	debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
158	val);
159
160	return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
161	}
162
163	static int ldo_set_enable(struct udevice *dev, bool enable)
164	{
165	int ldo = dev->driver_data - 1;
166	uint mask;
167
168	mask = 1 << ldo;
169
170	return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
171	enable ? mask : 0);
172	}
173
174	static bool ldo_get_enable(struct udevice *dev)
175	{
176	int ldo = dev->driver_data - 1;
177	int ret;
178	uint mask;
179
180	mask = 1 << ldo;
181
182	ret = pmic_reg_read(dev->parent, REG_LDO_EN);
183	if (ret < 0)
184	return ret;
185
186	return ret & mask ? true : false;
187	}
188
189	static int switch_set_enable(struct udevice *dev, bool enable)
190	{
191	int sw = dev->driver_data - 1;
192	uint mask;
193
194	mask = 1 << (sw + 5);
195
196	return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
197	enable ? mask : 0);
198	}
199
200	static bool switch_get_enable(struct udevice *dev)
201	{
202	int sw = dev->driver_data - 1;
203	int ret;
204	uint mask;
205
206	mask = 1 << (sw + 5);
207
208	ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
209	if (ret < 0)
210	return ret;
211
212	return ret & mask ? true : false;
213	}
214
215	static int rk808_buck_probe(struct udevice *dev)
216	{
217	struct dm_regulator_uclass_platdata *uc_pdata;
218
219	uc_pdata = dev_get_uclass_platdata(dev);
220
221	uc_pdata->type = REGULATOR_TYPE_BUCK;
222	uc_pdata->mode_count = 0;
223
224	return 0;
225	}
226
227	static int rk808_ldo_probe(struct udevice *dev)
228	{
229	struct dm_regulator_uclass_platdata *uc_pdata;
230
231	uc_pdata = dev_get_uclass_platdata(dev);
232
233	uc_pdata->type = REGULATOR_TYPE_LDO;
234	uc_pdata->mode_count = 0;
235
236	return 0;
237	}
238
239	static int rk808_switch_probe(struct udevice *dev)
240	{
241	struct dm_regulator_uclass_platdata *uc_pdata;
242
243	uc_pdata = dev_get_uclass_platdata(dev);
244
245	uc_pdata->type = REGULATOR_TYPE_FIXED;
246	uc_pdata->mode_count = 0;
247
248	return 0;
249	}
250
251	static const struct dm_regulator_ops rk808_buck_ops = {
252	.get_value = buck_get_value,
253	.set_value = buck_set_value,
254	.get_enable = buck_get_enable,
255	.set_enable = buck_set_enable,
256	};
257
258	static const struct dm_regulator_ops rk808_ldo_ops = {
259	.get_value = ldo_get_value,
260	.set_value = ldo_set_value,
261	.get_enable = ldo_get_enable,
262	.set_enable = ldo_set_enable,
263	};
264
265	static const struct dm_regulator_ops rk808_switch_ops = {
266	.get_enable = switch_get_enable,
267	.set_enable = switch_set_enable,
268	};
269
270	U_BOOT_DRIVER(rk808_buck) = {
271	.name = "rk808_buck",
272	.id = UCLASS_REGULATOR,
273	.ops = &rk808_buck_ops,
274	.probe = rk808_buck_probe,
275	};
276
277	U_BOOT_DRIVER(rk808_ldo) = {
278	.name = "rk808_ldo",
279	.id = UCLASS_REGULATOR,
280	.ops = &rk808_ldo_ops,
281	.probe = rk808_ldo_probe,
282	};
283
284	U_BOOT_DRIVER(rk808_switch) = {
285	.name = "rk808_switch",
286	.id = UCLASS_REGULATOR,
287	.ops = &rk808_switch_ops,
288	.probe = rk808_switch_probe,
289	};
290	#endif
291
292	int rk808_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
293	{
294	int ret;
295
296	ret = _buck_set_value(pmic, buck, uvolt);
297	if (ret)
298	return ret;
299
300	return _buck_set_enable(pmic, buck, true);
301	}