/*
+ * AXP221 and AXP223 driver
+ *
+ * IMPORTANT when making changes to this file check that the registers
+ * used are the same for the axp221 and axp223.
+ *
+ * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
*
* SPDX-License-Identifier: GPL-2.0+
#include <common.h>
#include <errno.h>
#include <asm/arch/p2wi.h>
+#include <asm/arch/rsb.h>
#include <axp221.h>
+/*
+ * The axp221 uses the p2wi bus, the axp223 is identical (for all registers
+ * used sofar) but uses the rsb bus. These functions abstract this.
+ */
+static int pmic_bus_init(void)
+{
+#ifdef CONFIG_MACH_SUN6I
+ p2wi_init();
+ return p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
+ AXP221_INIT_DATA);
+#else
+ int ret;
+
+ ret = rsb_init();
+ if (ret)
+ return ret;
+
+ return rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR);
+#endif
+}
+
+static int pmic_bus_read(const u8 addr, u8 *data)
+{
+#ifdef CONFIG_MACH_SUN6I
+ return p2wi_read(addr, data);
+#else
+ return rsb_read(AXP223_RUNTIME_ADDR, addr, data);
+#endif
+}
+
+static int pmic_bus_write(const u8 addr, u8 data)
+{
+#ifdef CONFIG_MACH_SUN6I
+ return p2wi_write(addr, data);
+#else
+ return rsb_write(AXP223_RUNTIME_ADDR, addr, data);
+#endif
+}
+
static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
if (mvolt < min)
int ret;
u8 val;
- ret = p2wi_read(reg, &val);
+ ret = pmic_bus_read(reg, &val);
if (ret)
return ret;
val |= bits;
- return p2wi_write(reg, val);
+ return pmic_bus_write(reg, val);
+}
+
+static int axp221_clrbits(u8 reg, u8 bits)
+{
+ int ret;
+ u8 val;
+
+ ret = pmic_bus_read(reg, &val);
+ if (ret)
+ return ret;
+
+ val &= ~bits;
+ return pmic_bus_write(reg, val);
}
int axp221_set_dcdc1(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
- ret = p2wi_write(AXP221_DCDC1_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC1_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg);
if (ret)
return ret;
- return axp221_setbits(AXP221_OUTPUT_CTRL2,
- AXP221_OUTPUT_CTRL2_DCDC1_EN);
+ ret = axp221_setbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DCDC1SW_EN);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC1_EN);
}
int axp221_set_dcdc2(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
- return p2wi_write(AXP221_DCDC2_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC2_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC2_EN);
}
int axp221_set_dcdc3(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
- return p2wi_write(AXP221_DCDC3_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC3_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC3_EN);
}
int axp221_set_dcdc4(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
- return p2wi_write(AXP221_DCDC4_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC4_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC4_EN);
}
int axp221_set_dcdc5(unsigned int mvolt)
{
+ int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
- return p2wi_write(AXP221_DCDC5_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC5_EN);
+
+ ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_DCDC5_EN);
}
int axp221_set_dldo1(unsigned int mvolt)
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_DLDO1_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO1_EN);
+
+ ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg);
if (ret)
return ret;
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_DLDO2_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO2_EN);
+
+ ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg);
if (ret)
return ret;
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_DLDO3_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO3_EN);
+
+ ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg);
if (ret)
return ret;
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_DLDO4_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2,
+ AXP221_OUTPUT_CTRL2_DLDO4_EN);
+
+ ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg);
if (ret)
return ret;
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_ALDO1_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_ALDO1_EN);
+
+ ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg);
if (ret)
return ret;
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_ALDO2_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL1,
+ AXP221_OUTPUT_CTRL1_ALDO2_EN);
+
+ ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg);
if (ret)
return ret;
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
- ret = p2wi_write(AXP221_ALDO3_CTRL, cfg);
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL3,
+ AXP221_OUTPUT_CTRL3_ALDO3_EN);
+
+ ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg);
if (ret)
return ret;
AXP221_OUTPUT_CTRL3_ALDO3_EN);
}
+int axp221_set_eldo(int eldo_num, unsigned int mvolt)
+{
+ int ret;
+ u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
+ u8 addr, bits;
+
+ switch (eldo_num) {
+ case 3:
+ addr = AXP221_ELDO3_CTRL;
+ bits = AXP221_OUTPUT_CTRL2_ELDO3_EN;
+ break;
+ case 2:
+ addr = AXP221_ELDO2_CTRL;
+ bits = AXP221_OUTPUT_CTRL2_ELDO2_EN;
+ break;
+ case 1:
+ addr = AXP221_ELDO1_CTRL;
+ bits = AXP221_OUTPUT_CTRL2_ELDO1_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (mvolt == 0)
+ return axp221_clrbits(AXP221_OUTPUT_CTRL2, bits);
+
+ ret = pmic_bus_write(addr, cfg);
+ if (ret)
+ return ret;
+
+ return axp221_setbits(AXP221_OUTPUT_CTRL2, bits);
+}
+
int axp221_init(void)
{
+ /* This cannot be 0 because it is used in SPL before BSS is ready */
+ static int needs_init = 1;
u8 axp_chip_id;
int ret;
- p2wi_init();
- ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
- AXP221_INIT_DATA);
+ if (!needs_init)
+ return 0;
+
+ ret = pmic_bus_init();
if (ret)
return ret;
- ret = p2wi_read(AXP221_CHIP_ID, &axp_chip_id);
+ ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id);
if (ret)
return ret;
if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
return -ENODEV;
+ needs_init = 0;
return 0;
}
if (ret)
return ret;
- ret = p2wi_write(AXP221_PAGE, 1);
+ ret = pmic_bus_write(AXP221_PAGE, 1);
if (ret)
return ret;
for (i = 0; i < 16; i++) {
- ret = p2wi_read(AXP221_SID + i, &dest[i]);
+ ret = pmic_bus_read(AXP221_SID + i, &dest[i]);
if (ret)
return ret;
}
- p2wi_write(AXP221_PAGE, 0);
+ pmic_bus_write(AXP221_PAGE, 0);
for (i = 0; i < 4; i++)
sid[i] = be32_to_cpu(sid[i]);
return 0;
}
+
+static int axp_drivebus_setup(void)
+{
+ int ret;
+
+ ret = axp221_init();
+ if (ret)
+ return ret;
+
+ /* Set N_VBUSEN pin to output / DRIVEBUS function */
+ return axp221_clrbits(AXP221_MISC_CTRL, AXP221_MISC_CTRL_N_VBUSEN_FUNC);
+}
+
+int axp_drivebus_enable(void)
+{
+ int ret;
+
+ ret = axp_drivebus_setup();
+ if (ret)
+ return ret;
+
+ /* Set DRIVEBUS high */
+ return axp221_setbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS);
+}
+
+int axp_drivebus_disable(void)
+{
+ int ret;
+
+ ret = axp_drivebus_setup();
+ if (ret)
+ return ret;
+
+ /* Set DRIVEBUS low */
+ return axp221_clrbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS);
+}
projects / oweals / u-boot.git / blobdiff