diff options
author | Simon Glass <sjg@chromium.org> | 2015-07-02 18:15:58 -0600 |
---|---|---|
committer | Simon Glass <sjg@chromium.org> | 2015-08-05 21:06:12 -0600 |
commit | 151b223b9c4e309d65166558afdfa0ce3c3b3213 (patch) | |
tree | 624862264958849dea9b13287d14b29e9ee130d9 /drivers | |
parent | 7fb57396e632126867c360e0dc0700db3d059aef (diff) |
dm: power: Add a new driver for the TPS65090 PMIC
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 <sjg@chromium.org>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/power/pmic/Kconfig | 9 | ||||
-rw-r--r-- | drivers/power/pmic/Makefile | 1 | ||||
-rw-r--r-- | drivers/power/pmic/tps65090.c | 94 |
3 files changed, 104 insertions, 0 deletions
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 164f42143fa..fd8af8161e8 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 4ad6df36c2d..43b706b688c 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_MAX77696) += pmic_max77696.o obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o diff --git a/drivers/power/pmic/tps65090.c b/drivers/power/pmic/tps65090.c new file mode 100644 index 00000000000..4797f327fac --- /dev/null +++ b/drivers/power/pmic/tps65090.c @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass <sjg@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, +}; |