+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2012
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
-#include <i2c.h>
-#include <axp209.h>
-
-enum axp209_reg {
- AXP209_POWER_STATUS = 0x00,
- AXP209_CHIP_VERSION = 0x03,
- AXP209_DCDC2_VOLTAGE = 0x23,
- AXP209_DCDC3_VOLTAGE = 0x27,
- AXP209_LDO24_VOLTAGE = 0x28,
- AXP209_LDO3_VOLTAGE = 0x29,
- AXP209_IRQ_STATUS5 = 0x4c,
- AXP209_SHUTDOWN = 0x32,
-};
-
-#define AXP209_POWER_STATUS_ON_BY_DC (1 << 0)
-
-#define AXP209_IRQ5_PEK_UP (1 << 6)
-#define AXP209_IRQ5_PEK_DOWN (1 << 5)
-
-#define AXP209_POWEROFF (1 << 7)
-
-static int axp209_write(enum axp209_reg reg, u8 val)
-{
- return i2c_write(0x34, reg, 1, &val, 1);
-}
-
-static int axp209_read(enum axp209_reg reg, u8 *val)
-{
- return i2c_read(0x34, reg, 1, val, 1);
-}
+#include <command.h>
+#include <asm/arch/pmic_bus.h>
+#include <axp_pmic.h>
+#include <linux/delay.h>
+
+#ifdef CONFIG_AXP_ALDO3_VOLT_SLOPE_08
+# define AXP209_VRC_SLOPE AXP209_VRC_LDO3_800uV_uS
+#endif
+#ifdef CONFIG_AXP_ALDO3_VOLT_SLOPE_16
+# define AXP209_VRC_SLOPE AXP209_VRC_LDO3_1600uV_uS
+#endif
+#if defined CONFIG_AXP_ALDO3_VOLT_SLOPE_NONE || !defined AXP209_VRC_SLOPE
+# define AXP209_VRC_SLOPE 0x00
+#endif
static u8 axp209_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
return (mvolt - min) / div;
}
-int axp209_set_dcdc2(int mvolt)
+int axp_set_dcdc2(unsigned int mvolt)
{
int rc;
u8 cfg, current;
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
+ AXP209_OUTPUT_CTRL_DCDC2);
+
+ rc = pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC2);
+ if (rc)
+ return rc;
+
cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
/* Do we really need to be this gentle? It has built-in voltage slope */
- while ((rc = axp209_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 &&
+ while ((rc = pmic_bus_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 &&
current != cfg) {
if (current < cfg)
current++;
else
current--;
- rc = axp209_write(AXP209_DCDC2_VOLTAGE, current);
+ rc = pmic_bus_write(AXP209_DCDC2_VOLTAGE, current);
if (rc)
break;
}
return rc;
}
-int axp209_set_dcdc3(int mvolt)
+int axp_set_dcdc3(unsigned int mvolt)
{
u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
+ int rc;
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
+ AXP209_OUTPUT_CTRL_DCDC3);
- return axp209_write(AXP209_DCDC3_VOLTAGE, cfg);
+ rc = pmic_bus_write(AXP209_DCDC3_VOLTAGE, cfg);
+ if (rc)
+ return rc;
+
+ return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC3);
}
-int axp209_set_ldo2(int mvolt)
+int axp_set_aldo2(unsigned int mvolt)
{
int rc;
u8 cfg, reg;
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
+ AXP209_OUTPUT_CTRL_LDO2);
+
cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100);
- rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
+ rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®);
if (rc)
return rc;
- /* LDO2 configuration is in upper 4 bits */
- reg = (reg & 0x0f) | (cfg << 4);
- return axp209_write(AXP209_LDO24_VOLTAGE, reg);
+ reg |= AXP209_LDO24_LDO2_SET(reg, cfg);
+ rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg);
+ if (rc)
+ return rc;
+
+ return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO2);
}
-int axp209_set_ldo3(int mvolt)
+int axp_set_aldo3(unsigned int mvolt)
{
u8 cfg;
+ int rc;
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
+ AXP209_OUTPUT_CTRL_LDO3);
+
+ /*
+ * Some boards have trouble reaching the target voltage without causing
+ * great inrush currents. To prevent this, boards can enable a certain
+ * slope to ramp up voltage. Note, this only works when changing an
+ * already active power rail. When toggling power on, the AXP ramps up
+ * steeply at 0.0167 V/uS.
+ */
+ rc = pmic_bus_read(AXP209_VRC_DCDC2_LDO3, &cfg);
+ cfg = AXP209_VRC_LDO3_SLOPE_SET(cfg, AXP209_VRC_SLOPE);
+ rc |= pmic_bus_write(AXP209_VRC_DCDC2_LDO3, cfg);
+
+ if (rc)
+ return rc;
+
+#ifdef CONFIG_AXP_ALDO3_INRUSH_QUIRK
+ /*
+ * On some boards, LDO3 has a too big capacitor installed. When
+ * turning on LDO3, this causes the AXP209 to shutdown on
+ * voltages over 1.9 volt. As a workaround, we enable LDO3
+ * first with the lowest possible voltage. If this still causes
+ * high inrush currents, the voltage slope should be increased.
+ */
+ rc = pmic_bus_read(AXP209_OUTPUT_CTRL, &cfg);
+ if (rc)
+ return rc;
- if (mvolt == -1)
- cfg = 0x80; /* determined by LDO3IN pin */
- else
- cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
+ if (!(cfg & AXP209_OUTPUT_CTRL_LDO3)) {
+ rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, 0x0); /* 0.7 Volt */
+ mdelay(1);
+ rc |= pmic_bus_setbits(AXP209_OUTPUT_CTRL,
+ AXP209_OUTPUT_CTRL_LDO3);
- return axp209_write(AXP209_LDO3_VOLTAGE, cfg);
+ if (rc)
+ return rc;
+ }
+#endif
+
+ if (mvolt == -1) {
+ cfg = AXP209_LDO3_VOLTAGE_FROM_LDO3IN;
+ } else {
+ cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
+ cfg = AXP209_LDO3_VOLTAGE_SET(cfg);
+ }
+
+ rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, cfg);
+ if (rc)
+ return rc;
+
+ return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO3);
}
-int axp209_set_ldo4(int mvolt)
+int axp_set_aldo4(unsigned int mvolt)
{
int rc;
- static const int vindex[] = {
+ static const unsigned int vindex[] = {
1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
2700, 2800, 3000, 3100, 3200, 3300
};
u8 cfg, reg;
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
+ AXP209_OUTPUT_CTRL_LDO4);
+
/* Translate mvolt to register cfg value, requested <= selected */
for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--);
- rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
+ rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®);
+ if (rc)
+ return rc;
+
+ reg |= AXP209_LDO24_LDO4_SET(reg, cfg);
+ rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg);
if (rc)
return rc;
- /* LDO4 configuration is in lower 4 bits */
- reg = (reg & 0xf0) | (cfg << 0);
- return axp209_write(AXP209_LDO24_VOLTAGE, reg);
+ return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO4);
}
-int axp209_init(void)
+int axp_init(void)
{
u8 ver;
- int rc;
+ int i, rc;
+
+ rc = pmic_bus_init();
+ if (rc)
+ return rc;
- rc = axp209_read(AXP209_CHIP_VERSION, &ver);
+ rc = pmic_bus_read(AXP209_CHIP_VERSION, &ver);
if (rc)
return rc;
- /* Low 4 bits is chip version */
- ver &= 0x0f;
+ if ((ver & AXP209_CHIP_VERSION_MASK) != 0x1)
+ return -EINVAL;
- if (ver != 0x1)
- return -1;
+ /* Mask all interrupts */
+ for (i = AXP209_IRQ_ENABLE1; i <= AXP209_IRQ_ENABLE5; i++) {
+ rc = pmic_bus_write(i, 0);
+ if (rc)
+ return rc;
+ }
- return 0;
-}
+ /*
+ * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
+ * from android these are sometimes on.
+ */
+ rc = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
-int axp209_poweron_by_dc(void)
-{
- u8 v;
+ rc = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
- if (axp209_read(AXP209_POWER_STATUS, &v))
- return 0;
+ rc = pmic_bus_write(AXP_GPIO2_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
- return (v & AXP209_POWER_STATUS_ON_BY_DC);
+ return 0;
}
-int axp209_power_button(void)
+int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
- u8 v;
-
- if (axp209_read(AXP209_IRQ_STATUS5, &v))
- return 0;
+ pmic_bus_write(AXP209_SHUTDOWN, AXP209_POWEROFF);
- axp209_write(AXP209_IRQ_STATUS5, AXP209_IRQ5_PEK_DOWN);
+ /* infinite loop during shutdown */
+ while (1) {}
- return v & AXP209_IRQ5_PEK_DOWN;
+ /* not reached */
+ return 0;
}
projects / u-boot.git / blobdiff