This PMIC is connected on SPMI bus so needs SPMI support enabled.
Signed-off-by: Mateusz Kulikowski <mateusz.kulikow...@gmail.com>
---
drivers/power/pmic/Kconfig | 14 +++++++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/pm8916.c | 92 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 107 insertions(+)
create mode 100644 drivers/power/pmic/pm8916.c
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index fb29843..eb1dde0 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -89,3 +89,17 @@ config PMIC_TPS65090
FETs and a battery charger. This driver provides register access
only, and you can enable the regulator/charger drivers separately if
required.
+
+config PMIC_PM8916
+ bool "Enable Driver Model for Qualcomm PM8916 PMIC"
+ depends on DM_PMIC
+ ---help---
+ The PM8916 is a PMIC connected to one (or several) processors
+ with SPMI bus. It has 2 slaves with several peripherals:
+ - 18x LDO
+ - 4x GPIO
+ - Power and Reset buttons
+ - Watchdog
+ - RTC
+ - Vibrator drivers
+ - Others
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 91e78f8..ac653c7 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_ACT8846) += act8846.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
+obj-$(CONFIG_PMIC_PM8916) += pm8916.o
obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o
diff --git a/drivers/power/pmic/pm8916.c b/drivers/power/pmic/pm8916.c
new file mode 100644
index 0000000..5fe50ef
--- /dev/null
+++ b/drivers/power/pmic/pm8916.c
@@ -0,0 +1,92 @@
+/*
+ * Qualcomm pm8916 pmic driver
+ *
+ * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikow...@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <dm.h>
+#include <asm/io.h>
+#include <linux/bitops.h>
+#include <power/pmic.h>
+#include <spmi/spmi.h>
+#include <asm/gpio.h>
+#include <dm/root.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define EXTRACT_PID(x) (((x) >> 8) & 0xFF)
+#define EXTRACT_REG(x) ((x) & 0xFF)
+
+struct pm8916_priv {
+ uint16_t usid; /* Slave ID on SPMI bus */
+};
+
+static int pm8916_reg_count(struct udevice *dev)
+{
+ return 0xFFFF;
+}
+
+static int pm8916_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ struct pm8916_priv *priv = dev_get_priv(dev);
+
+ if (len != 1)
+ return -EINVAL;
+
+ return spmi_reg_write(dev->parent, priv->usid, EXTRACT_PID(reg),
+ EXTRACT_REG(reg), *buff);
+}
+
+static int pm8916_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ struct pm8916_priv *priv = dev_get_priv(dev);
+ int val;
+
+ if (len != 1)
+ return -EINVAL;
+
+ val = spmi_reg_read(dev->parent, priv->usid, EXTRACT_PID(reg),
+ EXTRACT_REG(reg));
+
+ if (val < 0)
+ return val;
+ *buff = val;
+ return 0;
+}
+
+static struct dm_pmic_ops pm8916_ops = {
+ .reg_count = pm8916_reg_count,
+ .read = pm8916_read,
+ .write = pm8916_write,
+};
+
+static const struct udevice_id pm8916_ids[] = {
+ { .compatible = "qcom,spmi-pmic" },
+ { }
+};
+
+static int pm8916_probe(struct udevice *dev)
+{
+ struct pm8916_priv *priv = dev_get_priv(dev);
+ priv->usid = dev_get_addr(dev);
+ return 0;
+}
+
+
+static int pm8916_bind(struct udevice *dev)
+{
+ return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
+}
+
+U_BOOT_DRIVER(pmic_pm8916) = {
+ .name = "pmic_pm8916",
+ .id = UCLASS_PMIC,
+ .of_match = pm8916_ids,
+ .bind = pm8916_bind,
+ .probe = pm8916_probe,
+ .ops = &pm8916_ops,
+ .priv_auto_alloc_size = sizeof(struct pm8916_priv),
+};
--
2.5.0
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