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authorPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>2016-09-18 13:07:25 +0200
committerKlaus Goger <klaus.goger@theobroma-systems.com>2016-09-18 15:57:25 +0200
commitae07c5c0cc8173d198fd2a420ac31958a1bbbf32 (patch)
tree0dc10fdecc7be400e0615f86a285e4096c928249 /drivers
parentd98f436149fbf3dc4c0d30ba7549f53f8d8f8259 (diff)
pmic: add DM driver for the AXP806 and AXP809
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/pmic/Kconfig7
-rw-r--r--drivers/power/pmic/Makefile3
-rw-r--r--drivers/power/pmic/axp80x.c179
3 files changed, 188 insertions, 1 deletions
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 7f69ae1ca8..3e7f23bc38 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -40,6 +40,13 @@ config PMIC_ACT8846
functions. It uses an I2C interface and is designed for use with
tablets and smartphones.
+config PMIC_AXP80X
+ bool "Enable support for the X-Powers AXP806 and AXP809 PMICs"
+ depends on DM_PMIC && MACH_SUN9I
+ ---help---
+ These devices is used with the Allwinner A80 (AW1869) SoC. This
+ driver implements register read/write operations.
+
config DM_PMIC_PFUZE100
bool "Enable Driver Model for PMIC PFUZE100"
depends on DM_PMIC
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index c6e8d0c610..05c48d2b14 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_ACT8846) += act8846.o
+obj-$(CONFIG_PMIC_AXP80X) += axp80x.o
obj-$(CONFIG_PMIC_RK808) += rk808.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
@@ -27,4 +28,4 @@ obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps62362.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
-obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o
+obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o \ No newline at end of file
diff --git a/drivers/power/pmic/axp80x.c b/drivers/power/pmic/axp80x.c
new file mode 100644
index 0000000000..727e421433
--- /dev/null
+++ b/drivers/power/pmic/axp80x.c
@@ -0,0 +1,179 @@
+/*
+ * (C) Copyright 2016 Theobroma Systems Design und Consulting GmbH
+ * Written by Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <power/axp806_pmic.h>
+#include <power/pmic.h>
+#include <asm/arch/rsb.h>
+
+#ifndef CONFIG_SPL_BUILD
+
+DECLARE_GLOBAL_DATA_PTR;
+
+
+#if 0
+/* TODO: implement me */
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "DCDC_REG", .driver = "rk808_buck"},
+ { .prefix = "LDO_REG", .driver = "rk808_ldo"},
+ { .prefix = "SWITCH_REG", .driver = "rk808_switch"},
+ { },
+};
+#endif
+
+static int axp806_reg_count(struct udevice *dev)
+{
+ return AXP806_NUM_OF_REGS;
+}
+
+static int axp808_reg_count(struct udevice *dev)
+{
+ return 0xff; /* TODO */
+}
+
+static int axp80x_write(struct udevice *dev,
+ uint reg, const uint8_t *buff, int len)
+{
+ int ret;
+
+ ret = dm_i2c_write(dev, reg, buff, len);
+ if (ret) {
+ debug("write error to device: %p register: %#x!", dev, reg);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int axp80x_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ int ret;
+
+ ret = dm_i2c_read(dev, reg, buff, len);
+ if (ret) {
+ debug("read error from device: %p register: %#x!", dev, reg);
+ return ret;
+ }
+
+ return 0;
+}
+
+#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
+static int axp80x_bind(struct udevice *dev, const struct pmic_child_info* pmic_children)
+{
+ const void *blob = gd->fdt_blob;
+ int regulators_node;
+ int children;
+
+ regulators_node = fdt_subnode_offset(blob, dev->of_offset,
+ "regulators");
+ if (regulators_node <= 0) {
+ debug("%s: %s regulators subnode not found!", __func__,
+ dev->name);
+ return -ENXIO;
+ }
+
+ debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
+
+ children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+ if (!children)
+ debug("%s: %s - no child found\n", __func__, dev->name);
+
+ /* Always return success for this device */
+ return 0;
+}
+
+static int axp806_bind(struct udevice *dev)
+{
+ return axp80x_bind(dev, axp806_children_info);
+}
+
+static int axp808_bind(struct udevice *dev)
+{
+ return axp80x_bind(dev, axp808_children_info);
+}
+#endif
+
+static void axp80x_set_name(struct udevice *dev, const char* prefix)
+{
+ struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
+ char devname[16];
+
+ snprintf(devname, sizeof(devname), "%s@%x", prefix, chip->chip_addr);
+ device_set_name(dev, devname);
+}
+
+static int axp806_probe(struct udevice *dev)
+{
+ /* Perform chip-specific initialisation */
+ axp80x_set_name(dev, "axp806");
+ /* The AXP806 needs to write to the 'register address
+ extension' register to fully initialise it for
+ communication using this driver. */
+ dm_i2c_write(dev, AXP806_REGADDR_EXT, (const uint8_t*)"\x10", 1);
+
+ return 0;
+}
+
+static int axp808_probe(struct udevice *dev)
+{
+ /* Perform chip-specific initialisation */
+ axp80x_set_name(dev, "axp808");
+
+ return 0;
+}
+
+static struct dm_pmic_ops axp806_ops = {
+ .reg_count = axp806_reg_count,
+ .read = axp80x_read,
+ .write = axp80x_write,
+};
+
+static struct dm_pmic_ops axp808_ops = {
+ .reg_count = axp808_reg_count,
+ .read = axp80x_read,
+ .write = axp80x_write,
+};
+
+static const struct udevice_id axp806_ids[] = {
+ { .compatible = "x-powers,axp806" },
+ { }
+};
+
+static const struct udevice_id axp808_ids[] = {
+ { .compatible = "x-powers,axp808" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_axp806) = {
+ .name = "AXP806 PMIC",
+ .id = UCLASS_PMIC,
+ .probe = axp806_probe,
+ .of_match = axp806_ids,
+#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
+ .bind = axp806_bind,
+#endif
+ .ops = &axp806_ops,
+};
+
+U_BOOT_DRIVER(pmic_axp808) = {
+ .name = "AXP808 PMIC",
+ .id = UCLASS_PMIC,
+ .probe = axp808_probe,
+ .of_match = axp808_ids,
+#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
+ .bind = axp808_bind,
+#endif
+ .ops = &axp808_ops,
+};
+
+#endif