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>
This commit is contained in:
Mateusz Kulikowski 2016-03-31 23:12:30 +02:00 committed by Tom Rini
parent 5b47271c18
commit c2f74c8f53
4 changed files with 131 additions and 0 deletions

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@ -0,0 +1,18 @@
Qualcomm pm8916 PMIC
This PMIC is connected using SPMI bus so should be child of SPMI bus controller.
Required properties:
- compatible: "qcom,spmi-pmic";
- reg: SPMI Slave ID, size (ignored)
- #address-cells: 0x1 (peripheral ID)
- #size-cells: 0x1 (size of peripheral register space)
Example:
pm8916@0 {
compatible = "qcom,spmi-pmic";
reg = <0x0 0x1>;
#address-cells = <0x1>;
#size-cells = <0x1>;
};

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@ -54,6 +54,22 @@ config DM_PMIC_MAX77686
This config enables implementation of driver-model pmic uclass features
for PMIC MAX77686. The driver implements read/write operations.
config PMIC_PM8916
bool "Enable Driver Model for Qualcomm PM8916 PMIC"
depends on DM_PMIC
---help---
The PM8916 is a PMIC connected to one (or several) processors
with SPMI bus. It has 2 slaves with several peripherals:
- 18x LDO
- 4x GPIO
- Power and Reset buttons
- Watchdog
- RTC
- Vibrator drivers
- Others
Driver binding info: doc/device-tree-bindings/pmic/pm8916.txt
config PMIC_RK808
bool "Enable support for Rockchip PMIC RK808"
depends on DM_PMIC

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@ -11,6 +11,7 @@ obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_ACT8846) += act8846.o
obj-$(CONFIG_PMIC_PM8916) += pm8916.o
obj-$(CONFIG_PMIC_RK808) += rk808.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o

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@ -0,0 +1,96 @@
/*
* Qualcomm pm8916 pmic driver
*
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <dm/root.h>
#include <power/pmic.h>
#include <spmi/spmi.h>
DECLARE_GLOBAL_DATA_PTR;
#define PID_SHIFT 8
#define PID_MASK (0xFF << PID_SHIFT)
#define REG_MASK 0xFF
struct pm8916_priv {
uint16_t usid; /* Slave ID on SPMI bus */
};
static int pm8916_reg_count(struct udevice *dev)
{
return 0xFFFF;
}
static int pm8916_write(struct udevice *dev, uint reg, const uint8_t *buff,
int len)
{
struct pm8916_priv *priv = dev_get_priv(dev);
if (len != 1)
return -EINVAL;
return spmi_reg_write(dev->parent, priv->usid,
(reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK,
*buff);
}
static int pm8916_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
struct pm8916_priv *priv = dev_get_priv(dev);
int val;
if (len != 1)
return -EINVAL;
val = spmi_reg_read(dev->parent, priv->usid,
(reg & PID_MASK) >> PID_SHIFT, reg & REG_MASK);
if (val < 0)
return val;
*buff = val;
return 0;
}
static struct dm_pmic_ops pm8916_ops = {
.reg_count = pm8916_reg_count,
.read = pm8916_read,
.write = pm8916_write,
};
static const struct udevice_id pm8916_ids[] = {
{ .compatible = "qcom,spmi-pmic" },
{ }
};
static int pm8916_probe(struct udevice *dev)
{
struct pm8916_priv *priv = dev_get_priv(dev);
priv->usid = dev_get_addr(dev);
if (priv->usid == FDT_ADDR_T_NONE)
return -EINVAL;
return 0;
}
static int pm8916_bind(struct udevice *dev)
{
return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
}
U_BOOT_DRIVER(pmic_pm8916) = {
.name = "pmic_pm8916",
.id = UCLASS_PMIC,
.of_match = pm8916_ids,
.bind = pm8916_bind,
.probe = pm8916_probe,
.ops = &pm8916_ops,
.priv_auto_alloc_size = sizeof(struct pm8916_priv),
};