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pmic: Add support for Qualcomm PM8916 PMIC
This PMIC is connected on SPMI bus so needs SPMI support enabled. Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
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18
doc/device-tree-bindings/pmic/pm8916.txt
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18
doc/device-tree-bindings/pmic/pm8916.txt
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Qualcomm pm8916 PMIC
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This PMIC is connected using SPMI bus so should be child of SPMI bus controller.
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Required properties:
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- compatible: "qcom,spmi-pmic";
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- reg: SPMI Slave ID, size (ignored)
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- #address-cells: 0x1 (peripheral ID)
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- #size-cells: 0x1 (size of peripheral register space)
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Example:
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pm8916@0 {
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compatible = "qcom,spmi-pmic";
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reg = <0x0 0x1>;
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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};
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@ -54,6 +54,22 @@ config DM_PMIC_MAX77686
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This config enables implementation of driver-model pmic uclass features
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for PMIC MAX77686. The driver implements read/write operations.
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config PMIC_PM8916
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bool "Enable Driver Model for Qualcomm PM8916 PMIC"
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depends on DM_PMIC
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---help---
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The PM8916 is a PMIC connected to one (or several) processors
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with SPMI bus. It has 2 slaves with several peripherals:
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- 18x LDO
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- 4x GPIO
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- Power and Reset buttons
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- Watchdog
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- RTC
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- Vibrator drivers
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- Others
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Driver binding info: doc/device-tree-bindings/pmic/pm8916.txt
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config PMIC_RK808
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bool "Enable support for Rockchip PMIC RK808"
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depends on DM_PMIC
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@ -11,6 +11,7 @@ obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
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obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
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obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
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obj-$(CONFIG_PMIC_ACT8846) += act8846.o
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obj-$(CONFIG_PMIC_PM8916) += pm8916.o
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obj-$(CONFIG_PMIC_RK808) += rk808.o
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obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
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obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
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96
drivers/power/pmic/pm8916.c
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96
drivers/power/pmic/pm8916.c
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/*
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* Qualcomm pm8916 pmic driver
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*
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* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
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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 <dm/root.h>
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#include <power/pmic.h>
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#include <spmi/spmi.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define PID_SHIFT 8
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#define PID_MASK (0xFF << PID_SHIFT)
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#define REG_MASK 0xFF
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struct pm8916_priv {
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uint16_t usid; /* Slave ID on SPMI bus */
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};
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static int pm8916_reg_count(struct udevice *dev)
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{
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return 0xFFFF;
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}
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static int pm8916_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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struct pm8916_priv *priv = dev_get_priv(dev);
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if (len != 1)
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return -EINVAL;
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return spmi_reg_write(dev->parent, priv->usid,
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(reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK,
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*buff);
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}
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static int pm8916_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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struct pm8916_priv *priv = dev_get_priv(dev);
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int val;
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if (len != 1)
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return -EINVAL;
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val = spmi_reg_read(dev->parent, priv->usid,
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(reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK);
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if (val < 0)
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return val;
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*buff = val;
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return 0;
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}
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static struct dm_pmic_ops pm8916_ops = {
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.reg_count = pm8916_reg_count,
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.read = pm8916_read,
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.write = pm8916_write,
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};
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static const struct udevice_id pm8916_ids[] = {
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{ .compatible = "qcom,spmi-pmic" },
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{ }
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};
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static int pm8916_probe(struct udevice *dev)
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{
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struct pm8916_priv *priv = dev_get_priv(dev);
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priv->usid = dev_get_addr(dev);
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if (priv->usid == FDT_ADDR_T_NONE)
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return -EINVAL;
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return 0;
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}
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static int pm8916_bind(struct udevice *dev)
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{
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return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
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}
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U_BOOT_DRIVER(pmic_pm8916) = {
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.name = "pmic_pm8916",
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.id = UCLASS_PMIC,
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.of_match = pm8916_ids,
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.bind = pm8916_bind,
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.probe = pm8916_probe,
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.ops = &pm8916_ops,
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.priv_auto_alloc_size = sizeof(struct pm8916_priv),
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};
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