diff options
| -rw-r--r-- | doc/device-tree-bindings/power/tps65090.txt | 17 | ||||
| -rw-r--r-- | doc/device-tree-bindings/regulator/tps65090.txt | 122 | ||||
| -rw-r--r-- | drivers/power/pmic/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/pmic/pmic_tps65090.c | 310 | ||||
| -rw-r--r-- | include/fdtdec.h | 1 | ||||
| -rw-r--r-- | include/power/tps65090_pmic.h | 73 | ||||
| -rw-r--r-- | lib/fdtdec.c | 1 |
7 files changed, 525 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/power/tps65090.txt b/doc/device-tree-bindings/power/tps65090.txt new file mode 100644 index 0000000..8e5e0d3 --- /dev/null +++ b/doc/device-tree-bindings/power/tps65090.txt @@ -0,0 +1,17 @@ +TPS65090 Frontend PMU with Switchmode Charger + +Required Properties: +-compatible: "ti,tps65090-charger" + +Optional Properties: +-ti,enable-low-current-chrg: Enables charging when a low current is detected + while the default logic is to stop charging. + +This node is a subnode of the tps65090 PMIC. + +Example: + + tps65090-charger { + compatible = "ti,tps65090-charger"; + ti,enable-low-current-chrg; + }; diff --git a/doc/device-tree-bindings/regulator/tps65090.txt b/doc/device-tree-bindings/regulator/tps65090.txt new file mode 100644 index 0000000..313a60b --- /dev/null +++ b/doc/device-tree-bindings/regulator/tps65090.txt @@ -0,0 +1,122 @@ +TPS65090 regulators + +Required properties: +- compatible: "ti,tps65090" +- reg: I2C slave address +- interrupts: the interrupt outputs of the controller +- regulators: A node that houses a sub-node for each regulator within the + device. Each sub-node is identified using the node's name, with valid + values listed below. The content of each sub-node is defined by the + standard binding for regulators; see regulator.txt. + dcdc[1-3], fet[1-7] and ldo[1-2] respectively. +- vsys[1-3]-supply: The input supply for DCDC[1-3] respectively. +- infet[1-7]-supply: The input supply for FET[1-7] respectively. +- vsys-l[1-2]-supply: The input supply for LDO[1-2] respectively. + +Optional properties: +- ti,enable-ext-control: This is applicable for DCDC1, DCDC2 and DCDC3. + If DCDCs are externally controlled then this property should be there. +- "dcdc-ext-control-gpios: This is applicable for DCDC1, DCDC2 and DCDC3. + If DCDCs are externally controlled and if it is from GPIO then GPIO + number should be provided. If it is externally controlled and no GPIO + entry then driver will just configure this rails as external control + and will not provide any enable/disable APIs. + +Each regulator is defined using the standard binding for regulators. + +Example: + + tps65090@48 { + compatible = "ti,tps65090"; + reg = <0x48>; + interrupts = <0 88 0x4>; + + vsys1-supply = <&some_reg>; + vsys2-supply = <&some_reg>; + vsys3-supply = <&some_reg>; + infet1-supply = <&some_reg>; + infet2-supply = <&some_reg>; + infet3-supply = <&some_reg>; + infet4-supply = <&some_reg>; + infet5-supply = <&some_reg>; + infet6-supply = <&some_reg>; + infet7-supply = <&some_reg>; + vsys_l1-supply = <&some_reg>; + vsys_l2-supply = <&some_reg>; + + regulators { + dcdc1 { + regulator-name = "dcdc1"; + regulator-boot-on; + regulator-always-on; + ti,enable-ext-control; + dcdc-ext-control-gpios = <&gpio 10 0>; + }; + + dcdc2 { + regulator-name = "dcdc2"; + regulator-boot-on; + regulator-always-on; + }; + + dcdc3 { + regulator-name = "dcdc3"; + regulator-boot-on; + regulator-always-on; + }; + + fet1 { + regulator-name = "fet1"; + regulator-boot-on; + regulator-always-on; + }; + + fet2 { + regulator-name = "fet2"; + regulator-boot-on; + regulator-always-on; + }; + + fet3 { + regulator-name = "fet3"; + regulator-boot-on; + regulator-always-on; + }; + + fet4 { + regulator-name = "fet4"; + regulator-boot-on; + regulator-always-on; + }; + + fet5 { + regulator-name = "fet5"; + regulator-boot-on; + regulator-always-on; + }; + + fet6 { + regulator-name = "fet6"; + regulator-boot-on; + regulator-always-on; + }; + + fet7 { + regulator-name = "fet7"; + regulator-boot-on; + regulator-always-on; + }; + + ldo1 { + regulator-name = "ldo1"; + regulator-boot-on; + regulator-always-on; + }; + + ldo2 { + regulator-name = "ldo2"; + regulator-boot-on; + regulator-always-on; + }; + }; + }; diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 4129bda..3244f69 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -10,5 +10,6 @@ obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o obj-$(CONFIG_POWER_MAX77686) += pmic_max77686.o obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o +obj-$(CONFIG_POWER_TPS65090) += pmic_tps65090.o obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o diff --git a/drivers/power/pmic/pmic_tps65090.c b/drivers/power/pmic/pmic_tps65090.c new file mode 100644 index 0000000..c5b3966 --- /dev/null +++ b/drivers/power/pmic/pmic_tps65090.c @@ -0,0 +1,310 @@ +/* + * Copyright (c) 2012 The Chromium OS Authors. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <fdtdec.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/tps65090_pmic.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define TPS65090_NAME "TPS65090_PMIC" + +/* TPS65090 register addresses */ +enum { + REG_IRQ1 = 0, + REG_CG_CTRL0 = 4, + REG_CG_STATUS1 = 0xa, + REG_FET1_CTRL = 0x0f, + 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 */ +}; + +/** + * Checks for a valid FET number + * + * @param fet_id FET number to check + * @return 0 if ok, -EINVAL if FET value is out of range + */ +static int tps65090_check_fet(unsigned int fet_id) +{ + if (fet_id == 0 || fet_id > MAX_FET_NUM) { + debug("parameter fet_id is out of range, %u not in 1 ~ %u\n", + fet_id, MAX_FET_NUM); + return -EINVAL; + } + + return 0; +} + +/** + * Set the power state for a FET + * + * @param pmic pmic structure for the tps65090 + * @param fet_id Fet number to set (1..MAX_FET_NUM) + * @param set 1 to power on FET, 0 to power off + * @return -EIO if we got a comms error, -EAGAIN if the FET failed to + * change state. If all is ok, returns 0. + */ +static int tps65090_fet_set(struct pmic *pmic, int fet_id, bool set) +{ + int retry; + u32 reg, value; + + value = FET_CTRL_ADENFET | FET_CTRL_WAIT; + if (set) + value |= FET_CTRL_ENFET; + + if (pmic_reg_write(pmic, REG_FET1_CTRL + fet_id - 1, value)) + return -EIO; + + /* Try reading until we get a result */ + for (retry = 0; retry < MAX_CTRL_READ_TRIES; retry++) { + if (pmic_reg_read(pmic, REG_FET1_CTRL + fet_id - 1, ®)) + return -EIO; + + /* Check that the fet went into the expected state */ + if (!!(reg & FET_CTRL_PGFET) == set) + return 0; + + /* If we got a timeout, there is no point in waiting longer */ + if (reg & FET_CTRL_TOFET) + break; + + mdelay(1); + } + + debug("FET %d: Power good should have set to %d but reg=%#02x\n", + fet_id, set, reg); + return -EAGAIN; +} + +int tps65090_fet_enable(unsigned int fet_id) +{ + struct pmic *pmic; + ulong start; + int loops; + int ret; + + ret = tps65090_check_fet(fet_id); + if (ret) + return ret; + + pmic = pmic_get(TPS65090_NAME); + if (!pmic) + return -EACCES; + + start = get_timer(0); + for (loops = 0;; loops++) { + ret = tps65090_fet_set(pmic, fet_id, true); + if (!ret) + break; + + if (get_timer(start) > 100) + break; + + /* Turn it off and try again until we time out */ + tps65090_fet_set(pmic, fet_id, false); + } + + if (ret) + debug("%s: FET%d failed to power on: time=%lums, loops=%d\n", + __func__, fet_id, get_timer(start), loops); + else if (loops) + debug("%s: FET%d powered on after %lums, loops=%d\n", + __func__, fet_id, get_timer(start), loops); + + /* + * Unfortunately, there are some conditions where the power + * good bit will be 0, but the fet still comes up. One such + * case occurs with the lcd backlight. We'll just return 0 here + * and assume that the fet will eventually come up. + */ + if (ret == -EAGAIN) + ret = 0; + + return ret; +} + +int tps65090_fet_disable(unsigned int fet_id) +{ + struct pmic *pmic; + int ret; + + ret = tps65090_check_fet(fet_id); + if (ret) + return ret; + + pmic = pmic_get(TPS65090_NAME); + if (!pmic) + return -EACCES; + ret = tps65090_fet_set(pmic, fet_id, false); + + return ret; +} + +int tps65090_fet_is_enabled(unsigned int fet_id) +{ + struct pmic *pmic; + u32 reg; + int ret; + + ret = tps65090_check_fet(fet_id); + if (ret) + return ret; + + pmic = pmic_get(TPS65090_NAME); + if (!pmic) + return -ENODEV; + ret = pmic_reg_read(pmic, REG_FET1_CTRL + fet_id - 1, ®); + if (ret) { + debug("fail to read FET%u_CTRL register over I2C", fet_id); + return -EIO; + } + + return reg & FET_CTRL_ENFET; +} + +int tps65090_get_charging(void) +{ + struct pmic *pmic; + u32 val; + int ret; + + pmic = pmic_get(TPS65090_NAME); + if (!pmic) + return -EACCES; + + ret = pmic_reg_read(pmic, REG_CG_CTRL0, &val); + if (ret) + return ret; + + return !!(val & CG_CTRL0_ENC_MASK); +} + +static int tps65090_charger_state(struct pmic *pmic, int state, + int current) +{ + u32 val; + int ret; + + ret = pmic_reg_read(pmic, REG_CG_CTRL0, &val); + if (!ret) { + if (state == PMIC_CHARGER_ENABLE) + val |= CG_CTRL0_ENC_MASK; + else + val &= ~CG_CTRL0_ENC_MASK; + ret = pmic_reg_write(pmic, REG_CG_CTRL0, val); + } + if (ret) { + debug("%s: Failed to read/write register\n", __func__); + return ret; + } + + return 0; +} + +int tps65090_get_status(void) +{ + struct pmic *pmic; + u32 val; + int ret; + + pmic = pmic_get(TPS65090_NAME); + if (!pmic) + return -EACCES; + + ret = pmic_reg_read(pmic, REG_CG_STATUS1, &val); + if (ret) + return ret; + + return val; +} + +static int tps65090_charger_bat_present(struct pmic *pmic) +{ + u32 val; + int ret; + + ret = pmic_reg_read(pmic, REG_IRQ1, &val); + if (ret) + return ret; + + return !!(val & IRQ1_VBATG); +} + +static struct power_chrg power_chrg_pmic_ops = { + .chrg_bat_present = tps65090_charger_bat_present, + .chrg_state = tps65090_charger_state, +}; + +int tps65090_init(void) +{ + struct pmic *p; + int bus; + int addr; + const void *blob = gd->fdt_blob; + int node, parent; + + node = fdtdec_next_compatible(blob, 0, COMPAT_TI_TPS65090); + if (node < 0) { + debug("PMIC: No node for PMIC Chip in device tree\n"); + debug("node = %d\n", node); + return -ENODEV; + } + + parent = fdt_parent_offset(blob, node); + if (parent < 0) { + debug("%s: Cannot find node parent\n", __func__); + return -EINVAL; + } + + bus = i2c_get_bus_num_fdt(parent); + if (p->bus < 0) { + debug("%s: Cannot find I2C bus\n", __func__); + return -ENOENT; + } + addr = fdtdec_get_int(blob, node, "reg", TPS65090_I2C_ADDR); + p = pmic_alloc(); + if (!p) { + printf("%s: POWER allocation error!\n", __func__); + return -ENOMEM; + } + + p->name = TPS65090_NAME; + p->bus = bus; + p->interface = PMIC_I2C; + p->number_of_regs = TPS65090_NUM_REGS; + p->hw.i2c.addr = addr; + p->hw.i2c.tx_num = 1; + p->chrg = &power_chrg_pmic_ops; + + puts("TPS65090 PMIC init\n"); + + return 0; +} diff --git a/include/fdtdec.h b/include/fdtdec.h index 8c751fd..4b029d7 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -92,6 +92,7 @@ enum fdt_compat_id { COMPAT_SAMSUNG_EXYNOS5_I2C, /* Exynos5 High Speed I2C Controller */ COMPAT_SANDBOX_HOST_EMULATION, /* Sandbox emulation of a function */ COMPAT_SANDBOX_LCD_SDL, /* Sandbox LCD emulation with SDL */ + COMPAT_TI_TPS65090, /* Texas Instrument TPS65090 */ COMPAT_COUNT, }; diff --git a/include/power/tps65090_pmic.h b/include/power/tps65090_pmic.h new file mode 100644 index 0000000..dcf99c9 --- /dev/null +++ b/include/power/tps65090_pmic.h @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2012 The Chromium OS Authors. + * + * 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 + +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, +}; + +/** + * Enable FET + * + * @param fet_id FET ID, value between 1 and 7 + * @return 0 on success, non-0 on failure + */ +int tps65090_fet_enable(unsigned int fet_id); + +/** + * Disable FET + * + * @param fet_id FET ID, value between 1 and 7 + * @return 0 on success, non-0 on failure + */ +int tps65090_fet_disable(unsigned int fet_id); + +/** + * Is FET enabled? + * + * @param fet_id FET ID, value between 1 and 7 + * @return 1 enabled, 0 disabled, negative value on failure + */ +int tps65090_fet_is_enabled(unsigned int fet_id); + +/** + * Enable / disable the battery charger + * + * @param enable 0 to disable charging, non-zero to enable + */ +int tps65090_set_charge_enable(int enable); + +/** + * Check whether we have enabled battery charging + * + * @return 1 if enabled, 0 if disabled + */ +int tps65090_get_charging(void); + +/** + * Return the value of the status register + * + * @return status register value, or -1 on error + */ +int tps65090_get_status(void); + +/** + * Initialize the TPS65090 PMU. + * + * @return 0 on success, non-0 on failure + */ +int tps65090_init(void); + +#endif /* __TPS65090_PMIC_H_ */ diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 35e91b4..6cccfe5 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -66,6 +66,7 @@ static const char * const compat_names[COMPAT_COUNT] = { COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), COMPAT(SANDBOX_HOST_EMULATION, "sandbox,host-emulation"), COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"), + COMPAT(TI_TPS65090, "ti,tps65090"), }; const char *fdtdec_get_compatible(enum fdt_compat_id id) |