forked from Minki/linux
a1867f85e0
Add support for ClockMatrix(TM) and 82P33xxx families of timing and synchronization devices. The access interface can be either SPI or I2C. Currently, it will create 2 types of MFD devices, which are to be used by the corresponding rsmu character device driver and the PTP hardware clock driver, respectively. Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
89 lines
1.6 KiB
C
89 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Core driver for Renesas Synchronization Management Unit (SMU) devices.
|
|
*
|
|
* Copyright (C) 2021 Integrated Device Technology, Inc., a Renesas Company.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/rsmu.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "rsmu.h"
|
|
|
|
enum {
|
|
RSMU_PHC = 0,
|
|
RSMU_CDEV = 1,
|
|
RSMU_N_DEVS = 2,
|
|
};
|
|
|
|
static struct mfd_cell rsmu_cm_devs[] = {
|
|
[RSMU_PHC] = {
|
|
.name = "8a3400x-phc",
|
|
},
|
|
[RSMU_CDEV] = {
|
|
.name = "8a3400x-cdev",
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell rsmu_sabre_devs[] = {
|
|
[RSMU_PHC] = {
|
|
.name = "82p33x1x-phc",
|
|
},
|
|
[RSMU_CDEV] = {
|
|
.name = "82p33x1x-cdev",
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell rsmu_sl_devs[] = {
|
|
[RSMU_PHC] = {
|
|
.name = "8v19n85x-phc",
|
|
},
|
|
[RSMU_CDEV] = {
|
|
.name = "8v19n85x-cdev",
|
|
},
|
|
};
|
|
|
|
int rsmu_core_init(struct rsmu_ddata *rsmu)
|
|
{
|
|
struct mfd_cell *cells;
|
|
int ret;
|
|
|
|
switch (rsmu->type) {
|
|
case RSMU_CM:
|
|
cells = rsmu_cm_devs;
|
|
break;
|
|
case RSMU_SABRE:
|
|
cells = rsmu_sabre_devs;
|
|
break;
|
|
case RSMU_SL:
|
|
cells = rsmu_sl_devs;
|
|
break;
|
|
default:
|
|
dev_err(rsmu->dev, "Unsupported RSMU device type: %d\n", rsmu->type);
|
|
return -ENODEV;
|
|
}
|
|
|
|
mutex_init(&rsmu->lock);
|
|
|
|
ret = devm_mfd_add_devices(rsmu->dev, PLATFORM_DEVID_AUTO, cells,
|
|
RSMU_N_DEVS, NULL, 0, NULL);
|
|
if (ret < 0)
|
|
dev_err(rsmu->dev, "Failed to register sub-devices: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void rsmu_core_exit(struct rsmu_ddata *rsmu)
|
|
{
|
|
mutex_destroy(&rsmu->lock);
|
|
}
|
|
|
|
MODULE_DESCRIPTION("Renesas SMU core driver");
|
|
MODULE_LICENSE("GPL");
|