The existing TPS65090 driver does not support driver model. Add a new one
that does. This can be used as a base for a regulator driver also. It uses
the standard device tree binding.
Signed-off-by: Simon Glass <s...@chromium.org>
---
drivers/power/pmic/Kconfig | 9 +++++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/tps65090.c | 94 +++++++++++++++++++++++++++++++++++++++++++
include/power/tps65090.h | 56 ++++++++++++++++++++++++++
4 files changed, 160 insertions(+)
create mode 100644 drivers/power/pmic/tps65090.c
create mode 100644 include/power/tps65090.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 164f421..fd8af81 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -41,3 +41,12 @@ config DM_PMIC_SANDBOX
- set by i2c emul driver's probe() (defaults in header)
Driver binding info: doc/device-tree-bindings/pmic/sandbox.txt
+
+config PMIC_TPS65090
+ bool "Enable driver for Texas Instruments TPS65090 PMIC"
+ depends on DM_PMIC
+ ---help---
+ The TPS65090 is a PMIC containing several LDOs, DC to DC convertors,
+ FETs and a battery charger. This driver provides register access
+ only, and you can enable the regulator/charger drivers separately if
+ required.
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index ae86f04..2316e3b 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -8,6 +8,7 @@
obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
+obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
diff --git a/drivers/power/pmic/tps65090.c b/drivers/power/pmic/tps65090.c
new file mode 100644
index 0000000..4797f32
--- /dev/null
+++ b/drivers/power/pmic/tps65090.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <s...@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/tps65090.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "fet", .driver = TPS65090_FET_DRIVER },
+ { },
+};
+
+static int tps65090_reg_count(struct udevice *dev)
+{
+ return TPS65090_NUM_REGS;
+}
+
+static int tps65090_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ error("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int tps65090_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ int ret;
+
+ ret = dm_i2c_read(dev, reg, buff, len);
+ if (ret) {
+ error("read error %d from device: %p register: %#x!", ret, dev,
+ reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int tps65090_bind(struct udevice *dev)
+{
+ int regulators_node;
+ const void *blob = gd->fdt_blob;
+ 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 struct dm_pmic_ops tps65090_ops = {
+ .reg_count = tps65090_reg_count,
+ .read = tps65090_read,
+ .write = tps65090_write,
+};
+
+static const struct udevice_id tps65090_ids[] = {
+ { .compatible = "ti,tps65090" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_tps65090) = {
+ .name = "tps65090 pmic",
+ .id = UCLASS_PMIC,
+ .of_match = tps65090_ids,
+ .bind = tps65090_bind,
+ .ops = &tps65090_ops,
+};
diff --git a/include/power/tps65090.h b/include/power/tps65090.h
new file mode 100644
index 0000000..3a0690b
--- /dev/null
+++ b/include/power/tps65090.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <s...@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __TPS65090_PMIC_H_
+#define __TPS65090_PMIC_H_
+
+/* I2C device address for TPS65090 PMU */
+#define TPS65090_I2C_ADDR 0x48
+
+/* TPS65090 register addresses */
+enum {
+ REG_IRQ1 = 0,
+ REG_CG_CTRL0 = 4,
+ REG_CG_STATUS1 = 0xa,
+ REG_FET_BASE = 0xe, /* Not a real register, FETs count from here */
+ REG_FET1_CTRL,
+ REG_FET2_CTRL,
+ REG_FET3_CTRL,
+ REG_FET4_CTRL,
+ REG_FET5_CTRL,
+ REG_FET6_CTRL,
+ REG_FET7_CTRL,
+ TPS65090_NUM_REGS,
+};
+
+enum {
+ IRQ1_VBATG = 1 << 3,
+ CG_CTRL0_ENC_MASK = 0x01,
+
+ MAX_FET_NUM = 7,
+ MAX_CTRL_READ_TRIES = 5,
+
+ /* TPS65090 FET_CTRL register values */
+ FET_CTRL_TOFET = 1 << 7, /* Timeout, startup, overload */
+ FET_CTRL_PGFET = 1 << 4, /* Power good for FET status */
+ FET_CTRL_WAIT = 3 << 2, /* Overcurrent timeout max */
+ FET_CTRL_ADENFET = 1 << 1, /* Enable output auto discharge */
+ FET_CTRL_ENFET = 1 << 0, /* Enable FET */
+};
+
+enum {
+ /* Status register fields */
+ TPS65090_ST1_OTC = 1 << 0,
+ TPS65090_ST1_OCC = 1 << 1,
+ TPS65090_ST1_STATE_SHIFT = 4,
+ TPS65090_ST1_STATE_MASK = 0xf << TPS65090_ST1_STATE_SHIFT,
+};
+
+/* Drivers name */
+#define TPS65090_FET_DRIVER "tps65090_fet"
+
+#endif /* __TPS65090_PMIC_H_ */
--
2.4.3.573.g4eafbef
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
