mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 19:14:30 +08:00
dba914b248
Fixed compilation warning "cast from pointer to integer of
different size [-Wpointer-to-int-cast]"
Fixes: b2832b96fc ("mmc: pwrseq: sd8787: add support for wilc1000")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20210825081931.598934-1-claudiu.beznea@microchip.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* pwrseq_sd8787.c - power sequence support for Marvell SD8787 BT + Wifi chip
|
|
*
|
|
* Copyright (C) 2016 Matt Ranostay <matt@ranostay.consulting>
|
|
*
|
|
* Based on the original work pwrseq_simple.c
|
|
* Copyright (C) 2014 Linaro Ltd
|
|
* Author: Ulf Hansson <ulf.hansson@linaro.org>
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/device.h>
|
|
#include <linux/err.h>
|
|
#include <linux/gpio/consumer.h>
|
|
|
|
#include <linux/mmc/host.h>
|
|
|
|
#include "pwrseq.h"
|
|
|
|
struct mmc_pwrseq_sd8787 {
|
|
struct mmc_pwrseq pwrseq;
|
|
struct gpio_desc *reset_gpio;
|
|
struct gpio_desc *pwrdn_gpio;
|
|
u32 reset_pwrdwn_delay_ms;
|
|
};
|
|
|
|
#define to_pwrseq_sd8787(p) container_of(p, struct mmc_pwrseq_sd8787, pwrseq)
|
|
|
|
static void mmc_pwrseq_sd8787_pre_power_on(struct mmc_host *host)
|
|
{
|
|
struct mmc_pwrseq_sd8787 *pwrseq = to_pwrseq_sd8787(host->pwrseq);
|
|
|
|
gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
|
|
|
|
msleep(pwrseq->reset_pwrdwn_delay_ms);
|
|
gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 1);
|
|
}
|
|
|
|
static void mmc_pwrseq_sd8787_power_off(struct mmc_host *host)
|
|
{
|
|
struct mmc_pwrseq_sd8787 *pwrseq = to_pwrseq_sd8787(host->pwrseq);
|
|
|
|
gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 0);
|
|
gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);
|
|
}
|
|
|
|
static const struct mmc_pwrseq_ops mmc_pwrseq_sd8787_ops = {
|
|
.pre_power_on = mmc_pwrseq_sd8787_pre_power_on,
|
|
.power_off = mmc_pwrseq_sd8787_power_off,
|
|
};
|
|
|
|
static const u32 sd8787_delay_ms = 300;
|
|
static const u32 wilc1000_delay_ms = 5;
|
|
|
|
static const struct of_device_id mmc_pwrseq_sd8787_of_match[] = {
|
|
{ .compatible = "mmc-pwrseq-sd8787", .data = &sd8787_delay_ms },
|
|
{ .compatible = "mmc-pwrseq-wilc1000", .data = &wilc1000_delay_ms },
|
|
{/* sentinel */},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mmc_pwrseq_sd8787_of_match);
|
|
|
|
static int mmc_pwrseq_sd8787_probe(struct platform_device *pdev)
|
|
{
|
|
struct mmc_pwrseq_sd8787 *pwrseq;
|
|
struct device *dev = &pdev->dev;
|
|
const struct of_device_id *match;
|
|
|
|
pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);
|
|
if (!pwrseq)
|
|
return -ENOMEM;
|
|
|
|
match = of_match_node(mmc_pwrseq_sd8787_of_match, pdev->dev.of_node);
|
|
pwrseq->reset_pwrdwn_delay_ms = *(u32 *)match->data;
|
|
|
|
pwrseq->pwrdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
|
|
if (IS_ERR(pwrseq->pwrdn_gpio))
|
|
return PTR_ERR(pwrseq->pwrdn_gpio);
|
|
|
|
pwrseq->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
|
|
if (IS_ERR(pwrseq->reset_gpio))
|
|
return PTR_ERR(pwrseq->reset_gpio);
|
|
|
|
pwrseq->pwrseq.dev = dev;
|
|
pwrseq->pwrseq.ops = &mmc_pwrseq_sd8787_ops;
|
|
pwrseq->pwrseq.owner = THIS_MODULE;
|
|
platform_set_drvdata(pdev, pwrseq);
|
|
|
|
return mmc_pwrseq_register(&pwrseq->pwrseq);
|
|
}
|
|
|
|
static int mmc_pwrseq_sd8787_remove(struct platform_device *pdev)
|
|
{
|
|
struct mmc_pwrseq_sd8787 *pwrseq = platform_get_drvdata(pdev);
|
|
|
|
mmc_pwrseq_unregister(&pwrseq->pwrseq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver mmc_pwrseq_sd8787_driver = {
|
|
.probe = mmc_pwrseq_sd8787_probe,
|
|
.remove = mmc_pwrseq_sd8787_remove,
|
|
.driver = {
|
|
.name = "pwrseq_sd8787",
|
|
.of_match_table = mmc_pwrseq_sd8787_of_match,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(mmc_pwrseq_sd8787_driver);
|
|
MODULE_LICENSE("GPL v2");
|