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>utp
Simon Glass
parent
7fb57396e6
commit
151b223b9c
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@ -41,3 +41,12 @@ config DM_PMIC_SANDBOX
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- set by i2c emul driver's probe() (defaults in header)
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Driver binding info: doc/device-tree-bindings/pmic/sandbox.txt
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config PMIC_TPS65090
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bool "Enable driver for Texas Instruments TPS65090 PMIC"
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depends on DM_PMIC
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---help---
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The TPS65090 is a PMIC containing several LDOs, DC to DC convertors,
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FETs and a battery charger. This driver provides register access
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only, and you can enable the regulator/charger drivers separately if
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required.
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@ -8,6 +8,7 @@
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obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
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obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
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obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
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obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
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obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
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obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o
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obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
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@ -0,0 +1,94 @@
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/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/tps65090.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "fet", .driver = TPS65090_FET_DRIVER },
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{ },
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};
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static int tps65090_reg_count(struct udevice *dev)
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{
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return TPS65090_NUM_REGS;
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}
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static int tps65090_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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if (dm_i2c_write(dev, reg, buff, len)) {
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error("write error to device: %p register: %#x!", dev, reg);
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return -EIO;
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}
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return 0;
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}
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static int tps65090_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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int ret;
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ret = dm_i2c_read(dev, reg, buff, len);
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if (ret) {
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error("read error %d from device: %p register: %#x!", ret, dev,
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reg);
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return -EIO;
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}
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return 0;
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}
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static int tps65090_bind(struct udevice *dev)
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{
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int regulators_node;
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const void *blob = gd->fdt_blob;
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int children;
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regulators_node = fdt_subnode_offset(blob, dev->of_offset,
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"regulators");
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if (regulators_node <= 0) {
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debug("%s: %s regulators subnode not found!", __func__,
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dev->name);
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return -ENXIO;
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}
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debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
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children = pmic_bind_children(dev, regulators_node, pmic_children_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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/* Always return success for this device */
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return 0;
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}
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static struct dm_pmic_ops tps65090_ops = {
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.reg_count = tps65090_reg_count,
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.read = tps65090_read,
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.write = tps65090_write,
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};
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static const struct udevice_id tps65090_ids[] = {
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{ .compatible = "ti,tps65090" },
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{ }
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};
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U_BOOT_DRIVER(pmic_tps65090) = {
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.name = "tps65090 pmic",
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.id = UCLASS_PMIC,
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.of_match = tps65090_ids,
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.bind = tps65090_bind,
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.ops = &tps65090_ops,
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};
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@ -0,0 +1,56 @@
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/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __TPS65090_PMIC_H_
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#define __TPS65090_PMIC_H_
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/* I2C device address for TPS65090 PMU */
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#define TPS65090_I2C_ADDR 0x48
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/* TPS65090 register addresses */
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enum {
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REG_IRQ1 = 0,
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REG_CG_CTRL0 = 4,
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REG_CG_STATUS1 = 0xa,
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REG_FET_BASE = 0xe, /* Not a real register, FETs count from here */
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REG_FET1_CTRL,
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REG_FET2_CTRL,
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REG_FET3_CTRL,
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REG_FET4_CTRL,
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REG_FET5_CTRL,
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REG_FET6_CTRL,
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REG_FET7_CTRL,
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TPS65090_NUM_REGS,
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};
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enum {
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IRQ1_VBATG = 1 << 3,
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CG_CTRL0_ENC_MASK = 0x01,
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MAX_FET_NUM = 7,
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MAX_CTRL_READ_TRIES = 5,
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/* TPS65090 FET_CTRL register values */
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FET_CTRL_TOFET = 1 << 7, /* Timeout, startup, overload */
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FET_CTRL_PGFET = 1 << 4, /* Power good for FET status */
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FET_CTRL_WAIT = 3 << 2, /* Overcurrent timeout max */
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FET_CTRL_ADENFET = 1 << 1, /* Enable output auto discharge */
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FET_CTRL_ENFET = 1 << 0, /* Enable FET */
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};
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enum {
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/* Status register fields */
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TPS65090_ST1_OTC = 1 << 0,
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TPS65090_ST1_OCC = 1 << 1,
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TPS65090_ST1_STATE_SHIFT = 4,
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TPS65090_ST1_STATE_MASK = 0xf << TPS65090_ST1_STATE_SHIFT,
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};
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/* Drivers name */
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#define TPS65090_FET_DRIVER "tps65090_fet"
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#endif /* __TPS65090_PMIC_H_ */
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