Revision 20c7842ed8374e1c3ee750b2fe7ca8cdd071bda6 authored by Alex Deucher on 05 January 2021, 17:52:45 UTC, committed by Takashi Iwai on 12 January 2021, 15:06:01 UTC
We are able to power down the GPU and audio via the GPU driver so flag these asics as supporting runtime pm. Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://lore.kernel.org/r/20210105175245.963451-1-alexander.deucher@amd.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent 9f65df9
pinctrl.c
// SPDX-License-Identifier: GPL-2.0
/*
* Driver core interface to the pinctrl subsystem.
*
* Copyright (C) 2012 ST-Ericsson SA
* Written on behalf of Linaro for ST-Ericsson
* Based on bits of regulator core, gpio core and clk core
*
* Author: Linus Walleij <linus.walleij@linaro.org>
*/
#include <linux/device.h>
#include <linux/pinctrl/devinfo.h>
#include <linux/pinctrl/consumer.h>
#include <linux/slab.h>
/**
* pinctrl_bind_pins() - called by the device core before probe
* @dev: the device that is just about to probe
*/
int pinctrl_bind_pins(struct device *dev)
{
int ret;
if (dev->of_node_reused)
return 0;
dev->pins = devm_kzalloc(dev, sizeof(*(dev->pins)), GFP_KERNEL);
if (!dev->pins)
return -ENOMEM;
dev->pins->p = devm_pinctrl_get(dev);
if (IS_ERR(dev->pins->p)) {
dev_dbg(dev, "no pinctrl handle\n");
ret = PTR_ERR(dev->pins->p);
goto cleanup_alloc;
}
dev->pins->default_state = pinctrl_lookup_state(dev->pins->p,
PINCTRL_STATE_DEFAULT);
if (IS_ERR(dev->pins->default_state)) {
dev_dbg(dev, "no default pinctrl state\n");
ret = 0;
goto cleanup_get;
}
dev->pins->init_state = pinctrl_lookup_state(dev->pins->p,
PINCTRL_STATE_INIT);
if (IS_ERR(dev->pins->init_state)) {
/* Not supplying this state is perfectly legal */
dev_dbg(dev, "no init pinctrl state\n");
ret = pinctrl_select_state(dev->pins->p,
dev->pins->default_state);
} else {
ret = pinctrl_select_state(dev->pins->p, dev->pins->init_state);
}
if (ret) {
dev_dbg(dev, "failed to activate initial pinctrl state\n");
goto cleanup_get;
}
#ifdef CONFIG_PM
/*
* If power management is enabled, we also look for the optional
* sleep and idle pin states, with semantics as defined in
* <linux/pinctrl/pinctrl-state.h>
*/
dev->pins->sleep_state = pinctrl_lookup_state(dev->pins->p,
PINCTRL_STATE_SLEEP);
if (IS_ERR(dev->pins->sleep_state))
/* Not supplying this state is perfectly legal */
dev_dbg(dev, "no sleep pinctrl state\n");
dev->pins->idle_state = pinctrl_lookup_state(dev->pins->p,
PINCTRL_STATE_IDLE);
if (IS_ERR(dev->pins->idle_state))
/* Not supplying this state is perfectly legal */
dev_dbg(dev, "no idle pinctrl state\n");
#endif
return 0;
/*
* If no pinctrl handle or default state was found for this device,
* let's explicitly free the pin container in the device, there is
* no point in keeping it around.
*/
cleanup_get:
devm_pinctrl_put(dev->pins->p);
cleanup_alloc:
devm_kfree(dev, dev->pins);
dev->pins = NULL;
/* Return deferrals */
if (ret == -EPROBE_DEFER)
return ret;
/* Return serious errors */
if (ret == -EINVAL)
return ret;
/* We ignore errors like -ENOENT meaning no pinctrl state */
return 0;
}
Computing file changes ...