mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 02:36:39 +09:00
41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Qualcomm pm8916 pmic driver
|
|
*
|
|
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
|
|
*/
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <power/pmic.h>
|
|
#include <spmi/spmi.h>
|
|
|
|
#define PID_SHIFT 8
|
|
#define PID_MASK (0xFF << PID_SHIFT)
|
|
#define REG_MASK 0xFF
|
|
|
|
struct pm8916_priv {
|
|
uint32_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_read_addr(dev);
|
|
|
|
if (priv->usid == FDT_ADDR_T_NONE)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(pmic_pm8916) = {
|
|
.name = "pmic_pm8916",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = pm8916_ids,
|
|
.bind = dm_scan_fdt_dev,
|
|
.probe = pm8916_probe,
|
|
.ops = &pm8916_ops,
|
|
.priv_auto = sizeof(struct pm8916_priv),
|
|
};
|