2 * AXP221 and AXP223 driver
4 * IMPORTANT when making changes to this file check that the registers
5 * used are the same for the axp221 and axp223.
7 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
8 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
10 * SPDX-License-Identifier: GPL-2.0+
15 #include <asm/arch/p2wi.h>
16 #include <asm/arch/rsb.h>
20 * The axp221 uses the p2wi bus, the axp223 is identical (for all registers
21 * used sofar) but uses the rsb bus. These functions abstract this.
23 static int pmic_bus_init(void)
25 #ifdef CONFIG_MACH_SUN6I
27 return p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
36 return rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR);
40 static int pmic_bus_read(const u8 addr, u8 *data)
42 #ifdef CONFIG_MACH_SUN6I
43 return p2wi_read(addr, data);
45 return rsb_read(AXP223_RUNTIME_ADDR, addr, data);
49 static int pmic_bus_write(const u8 addr, u8 data)
51 #ifdef CONFIG_MACH_SUN6I
52 return p2wi_write(addr, data);
54 return rsb_write(AXP223_RUNTIME_ADDR, addr, data);
58 static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div)
65 return (mvolt - min) / div;
68 static int axp221_setbits(u8 reg, u8 bits)
73 ret = pmic_bus_read(reg, &val);
78 return pmic_bus_write(reg, val);
81 static int axp221_clrbits(u8 reg, u8 bits)
86 ret = pmic_bus_read(reg, &val);
91 return pmic_bus_write(reg, val);
94 int axp221_set_dcdc1(unsigned int mvolt)
97 u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
100 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
101 AXP221_OUTPUT_CTRL1_DCDC1_EN);
103 ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg);
107 ret = axp221_setbits(AXP221_OUTPUT_CTRL2,
108 AXP221_OUTPUT_CTRL2_DCDC1SW_EN);
112 return axp221_setbits(AXP221_OUTPUT_CTRL1,
113 AXP221_OUTPUT_CTRL1_DCDC1_EN);
116 int axp221_set_dcdc2(unsigned int mvolt)
119 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
122 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
123 AXP221_OUTPUT_CTRL1_DCDC2_EN);
125 ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
129 return axp221_setbits(AXP221_OUTPUT_CTRL1,
130 AXP221_OUTPUT_CTRL1_DCDC2_EN);
133 int axp221_set_dcdc3(unsigned int mvolt)
136 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
139 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
140 AXP221_OUTPUT_CTRL1_DCDC3_EN);
142 ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
146 return axp221_setbits(AXP221_OUTPUT_CTRL1,
147 AXP221_OUTPUT_CTRL1_DCDC3_EN);
150 int axp221_set_dcdc4(unsigned int mvolt)
153 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
156 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
157 AXP221_OUTPUT_CTRL1_DCDC4_EN);
159 ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
163 return axp221_setbits(AXP221_OUTPUT_CTRL1,
164 AXP221_OUTPUT_CTRL1_DCDC4_EN);
167 int axp221_set_dcdc5(unsigned int mvolt)
170 u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
173 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
174 AXP221_OUTPUT_CTRL1_DCDC5_EN);
176 ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
180 return axp221_setbits(AXP221_OUTPUT_CTRL1,
181 AXP221_OUTPUT_CTRL1_DCDC5_EN);
184 int axp221_set_dldo1(unsigned int mvolt)
187 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
190 return axp221_clrbits(AXP221_OUTPUT_CTRL2,
191 AXP221_OUTPUT_CTRL2_DLDO1_EN);
193 ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg);
197 return axp221_setbits(AXP221_OUTPUT_CTRL2,
198 AXP221_OUTPUT_CTRL2_DLDO1_EN);
201 int axp221_set_dldo2(unsigned int mvolt)
204 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
207 return axp221_clrbits(AXP221_OUTPUT_CTRL2,
208 AXP221_OUTPUT_CTRL2_DLDO2_EN);
210 ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg);
214 return axp221_setbits(AXP221_OUTPUT_CTRL2,
215 AXP221_OUTPUT_CTRL2_DLDO2_EN);
218 int axp221_set_dldo3(unsigned int mvolt)
221 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
224 return axp221_clrbits(AXP221_OUTPUT_CTRL2,
225 AXP221_OUTPUT_CTRL2_DLDO3_EN);
227 ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg);
231 return axp221_setbits(AXP221_OUTPUT_CTRL2,
232 AXP221_OUTPUT_CTRL2_DLDO3_EN);
235 int axp221_set_dldo4(unsigned int mvolt)
238 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
241 return axp221_clrbits(AXP221_OUTPUT_CTRL2,
242 AXP221_OUTPUT_CTRL2_DLDO4_EN);
244 ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg);
248 return axp221_setbits(AXP221_OUTPUT_CTRL2,
249 AXP221_OUTPUT_CTRL2_DLDO4_EN);
252 int axp221_set_aldo1(unsigned int mvolt)
255 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
258 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
259 AXP221_OUTPUT_CTRL1_ALDO1_EN);
261 ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg);
265 return axp221_setbits(AXP221_OUTPUT_CTRL1,
266 AXP221_OUTPUT_CTRL1_ALDO1_EN);
269 int axp221_set_aldo2(unsigned int mvolt)
272 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
275 return axp221_clrbits(AXP221_OUTPUT_CTRL1,
276 AXP221_OUTPUT_CTRL1_ALDO2_EN);
278 ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg);
282 return axp221_setbits(AXP221_OUTPUT_CTRL1,
283 AXP221_OUTPUT_CTRL1_ALDO2_EN);
286 int axp221_set_aldo3(unsigned int mvolt)
289 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
292 return axp221_clrbits(AXP221_OUTPUT_CTRL3,
293 AXP221_OUTPUT_CTRL3_ALDO3_EN);
295 ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg);
299 return axp221_setbits(AXP221_OUTPUT_CTRL3,
300 AXP221_OUTPUT_CTRL3_ALDO3_EN);
303 int axp221_set_eldo(int eldo_num, unsigned int mvolt)
306 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
311 addr = AXP221_ELDO3_CTRL;
312 bits = AXP221_OUTPUT_CTRL2_ELDO3_EN;
315 addr = AXP221_ELDO2_CTRL;
316 bits = AXP221_OUTPUT_CTRL2_ELDO2_EN;
319 addr = AXP221_ELDO1_CTRL;
320 bits = AXP221_OUTPUT_CTRL2_ELDO1_EN;
327 return axp221_clrbits(AXP221_OUTPUT_CTRL2, bits);
329 ret = pmic_bus_write(addr, cfg);
333 return axp221_setbits(AXP221_OUTPUT_CTRL2, bits);
336 int axp221_init(void)
338 /* This cannot be 0 because it is used in SPL before BSS is ready */
339 static int needs_init = 1;
346 ret = pmic_bus_init();
350 ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id);
354 if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
361 int axp221_get_sid(unsigned int *sid)
363 u8 *dest = (u8 *)sid;
370 ret = pmic_bus_write(AXP221_PAGE, 1);
374 for (i = 0; i < 16; i++) {
375 ret = pmic_bus_read(AXP221_SID + i, &dest[i]);
380 pmic_bus_write(AXP221_PAGE, 0);
382 for (i = 0; i < 4; i++)
383 sid[i] = be32_to_cpu(sid[i]);
388 int axp_get_vbus(void)
397 ret = pmic_bus_read(AXP221_POWER_STATUS, &val);
401 return (val & AXP221_POWER_STATUS_VBUS_USABLE) ? 1 : 0;
404 static int axp_drivebus_setup(void)
412 /* Set N_VBUSEN pin to output / DRIVEBUS function */
413 return axp221_clrbits(AXP221_MISC_CTRL, AXP221_MISC_CTRL_N_VBUSEN_FUNC);
416 int axp_drivebus_enable(void)
420 ret = axp_drivebus_setup();
424 /* Set DRIVEBUS high */
425 return axp221_setbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS);
428 int axp_drivebus_disable(void)
432 ret = axp_drivebus_setup();
436 /* Set DRIVEBUS low */
437 return axp221_clrbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS);