mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 11:40:53 +07:00
776bd315a7
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
270 lines
7.2 KiB
C
270 lines
7.2 KiB
C
/**
|
|
* Copyright (C) 2011 Philippe Rétornaz
|
|
*
|
|
* Based on twl4030-pwrbutton driver by:
|
|
* Peter De Schrijver <peter.de-schrijver@nokia.com>
|
|
* Felipe Balbi <felipe.balbi@nokia.com>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License. See the file "COPYING" in the main directory of this
|
|
* archive for more details.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/input.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mfd/mc13783.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/slab.h>
|
|
|
|
struct mc13783_pwrb {
|
|
struct input_dev *pwr;
|
|
struct mc13xxx *mc13783;
|
|
#define MC13783_PWRB_B1_POL_INVERT (1 << 0)
|
|
#define MC13783_PWRB_B2_POL_INVERT (1 << 1)
|
|
#define MC13783_PWRB_B3_POL_INVERT (1 << 2)
|
|
int flags;
|
|
unsigned short keymap[3];
|
|
};
|
|
|
|
#define MC13783_REG_INTERRUPT_SENSE_1 5
|
|
#define MC13783_IRQSENSE1_ONOFD1S (1 << 3)
|
|
#define MC13783_IRQSENSE1_ONOFD2S (1 << 4)
|
|
#define MC13783_IRQSENSE1_ONOFD3S (1 << 5)
|
|
|
|
#define MC13783_REG_POWER_CONTROL_2 15
|
|
#define MC13783_POWER_CONTROL_2_ON1BDBNC 4
|
|
#define MC13783_POWER_CONTROL_2_ON2BDBNC 6
|
|
#define MC13783_POWER_CONTROL_2_ON3BDBNC 8
|
|
#define MC13783_POWER_CONTROL_2_ON1BRSTEN (1 << 1)
|
|
#define MC13783_POWER_CONTROL_2_ON2BRSTEN (1 << 2)
|
|
#define MC13783_POWER_CONTROL_2_ON3BRSTEN (1 << 3)
|
|
|
|
static irqreturn_t button_irq(int irq, void *_priv)
|
|
{
|
|
struct mc13783_pwrb *priv = _priv;
|
|
int val;
|
|
|
|
mc13xxx_irq_ack(priv->mc13783, irq);
|
|
mc13xxx_reg_read(priv->mc13783, MC13783_REG_INTERRUPT_SENSE_1, &val);
|
|
|
|
switch (irq) {
|
|
case MC13783_IRQ_ONOFD1:
|
|
val = val & MC13783_IRQSENSE1_ONOFD1S ? 1 : 0;
|
|
if (priv->flags & MC13783_PWRB_B1_POL_INVERT)
|
|
val ^= 1;
|
|
input_report_key(priv->pwr, priv->keymap[0], val);
|
|
break;
|
|
|
|
case MC13783_IRQ_ONOFD2:
|
|
val = val & MC13783_IRQSENSE1_ONOFD2S ? 1 : 0;
|
|
if (priv->flags & MC13783_PWRB_B2_POL_INVERT)
|
|
val ^= 1;
|
|
input_report_key(priv->pwr, priv->keymap[1], val);
|
|
break;
|
|
|
|
case MC13783_IRQ_ONOFD3:
|
|
val = val & MC13783_IRQSENSE1_ONOFD3S ? 1 : 0;
|
|
if (priv->flags & MC13783_PWRB_B3_POL_INVERT)
|
|
val ^= 1;
|
|
input_report_key(priv->pwr, priv->keymap[2], val);
|
|
break;
|
|
}
|
|
|
|
input_sync(priv->pwr);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int mc13783_pwrbutton_probe(struct platform_device *pdev)
|
|
{
|
|
const struct mc13xxx_buttons_platform_data *pdata;
|
|
struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
|
|
struct input_dev *pwr;
|
|
struct mc13783_pwrb *priv;
|
|
int err = 0;
|
|
int reg = 0;
|
|
|
|
pdata = dev_get_platdata(&pdev->dev);
|
|
if (!pdata) {
|
|
dev_err(&pdev->dev, "missing platform data\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pwr = input_allocate_device();
|
|
if (!pwr) {
|
|
dev_dbg(&pdev->dev, "Can't allocate power button\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv) {
|
|
err = -ENOMEM;
|
|
dev_dbg(&pdev->dev, "Can't allocate power button\n");
|
|
goto free_input_dev;
|
|
}
|
|
|
|
reg |= (pdata->b1on_flags & 0x3) << MC13783_POWER_CONTROL_2_ON1BDBNC;
|
|
reg |= (pdata->b2on_flags & 0x3) << MC13783_POWER_CONTROL_2_ON2BDBNC;
|
|
reg |= (pdata->b3on_flags & 0x3) << MC13783_POWER_CONTROL_2_ON3BDBNC;
|
|
|
|
priv->pwr = pwr;
|
|
priv->mc13783 = mc13783;
|
|
|
|
mc13xxx_lock(mc13783);
|
|
|
|
if (pdata->b1on_flags & MC13783_BUTTON_ENABLE) {
|
|
priv->keymap[0] = pdata->b1on_key;
|
|
if (pdata->b1on_key != KEY_RESERVED)
|
|
__set_bit(pdata->b1on_key, pwr->keybit);
|
|
|
|
if (pdata->b1on_flags & MC13783_BUTTON_POL_INVERT)
|
|
priv->flags |= MC13783_PWRB_B1_POL_INVERT;
|
|
|
|
if (pdata->b1on_flags & MC13783_BUTTON_RESET_EN)
|
|
reg |= MC13783_POWER_CONTROL_2_ON1BRSTEN;
|
|
|
|
err = mc13xxx_irq_request(mc13783, MC13783_IRQ_ONOFD1,
|
|
button_irq, "b1on", priv);
|
|
if (err) {
|
|
dev_dbg(&pdev->dev, "Can't request irq\n");
|
|
goto free_priv;
|
|
}
|
|
}
|
|
|
|
if (pdata->b2on_flags & MC13783_BUTTON_ENABLE) {
|
|
priv->keymap[1] = pdata->b2on_key;
|
|
if (pdata->b2on_key != KEY_RESERVED)
|
|
__set_bit(pdata->b2on_key, pwr->keybit);
|
|
|
|
if (pdata->b2on_flags & MC13783_BUTTON_POL_INVERT)
|
|
priv->flags |= MC13783_PWRB_B2_POL_INVERT;
|
|
|
|
if (pdata->b2on_flags & MC13783_BUTTON_RESET_EN)
|
|
reg |= MC13783_POWER_CONTROL_2_ON2BRSTEN;
|
|
|
|
err = mc13xxx_irq_request(mc13783, MC13783_IRQ_ONOFD2,
|
|
button_irq, "b2on", priv);
|
|
if (err) {
|
|
dev_dbg(&pdev->dev, "Can't request irq\n");
|
|
goto free_irq_b1;
|
|
}
|
|
}
|
|
|
|
if (pdata->b3on_flags & MC13783_BUTTON_ENABLE) {
|
|
priv->keymap[2] = pdata->b3on_key;
|
|
if (pdata->b3on_key != KEY_RESERVED)
|
|
__set_bit(pdata->b3on_key, pwr->keybit);
|
|
|
|
if (pdata->b3on_flags & MC13783_BUTTON_POL_INVERT)
|
|
priv->flags |= MC13783_PWRB_B3_POL_INVERT;
|
|
|
|
if (pdata->b3on_flags & MC13783_BUTTON_RESET_EN)
|
|
reg |= MC13783_POWER_CONTROL_2_ON3BRSTEN;
|
|
|
|
err = mc13xxx_irq_request(mc13783, MC13783_IRQ_ONOFD3,
|
|
button_irq, "b3on", priv);
|
|
if (err) {
|
|
dev_dbg(&pdev->dev, "Can't request irq: %d\n", err);
|
|
goto free_irq_b2;
|
|
}
|
|
}
|
|
|
|
mc13xxx_reg_rmw(mc13783, MC13783_REG_POWER_CONTROL_2, 0x3FE, reg);
|
|
|
|
mc13xxx_unlock(mc13783);
|
|
|
|
pwr->name = "mc13783_pwrbutton";
|
|
pwr->phys = "mc13783_pwrbutton/input0";
|
|
pwr->dev.parent = &pdev->dev;
|
|
|
|
pwr->keycode = priv->keymap;
|
|
pwr->keycodemax = ARRAY_SIZE(priv->keymap);
|
|
pwr->keycodesize = sizeof(priv->keymap[0]);
|
|
__set_bit(EV_KEY, pwr->evbit);
|
|
|
|
err = input_register_device(pwr);
|
|
if (err) {
|
|
dev_dbg(&pdev->dev, "Can't register power button: %d\n", err);
|
|
goto free_irq;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
return 0;
|
|
|
|
free_irq:
|
|
mc13xxx_lock(mc13783);
|
|
|
|
if (pdata->b3on_flags & MC13783_BUTTON_ENABLE)
|
|
mc13xxx_irq_free(mc13783, MC13783_IRQ_ONOFD3, priv);
|
|
|
|
free_irq_b2:
|
|
if (pdata->b2on_flags & MC13783_BUTTON_ENABLE)
|
|
mc13xxx_irq_free(mc13783, MC13783_IRQ_ONOFD2, priv);
|
|
|
|
free_irq_b1:
|
|
if (pdata->b1on_flags & MC13783_BUTTON_ENABLE)
|
|
mc13xxx_irq_free(mc13783, MC13783_IRQ_ONOFD1, priv);
|
|
|
|
free_priv:
|
|
mc13xxx_unlock(mc13783);
|
|
kfree(priv);
|
|
|
|
free_input_dev:
|
|
input_free_device(pwr);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mc13783_pwrbutton_remove(struct platform_device *pdev)
|
|
{
|
|
struct mc13783_pwrb *priv = platform_get_drvdata(pdev);
|
|
const struct mc13xxx_buttons_platform_data *pdata;
|
|
|
|
pdata = dev_get_platdata(&pdev->dev);
|
|
|
|
mc13xxx_lock(priv->mc13783);
|
|
|
|
if (pdata->b3on_flags & MC13783_BUTTON_ENABLE)
|
|
mc13xxx_irq_free(priv->mc13783, MC13783_IRQ_ONOFD3, priv);
|
|
if (pdata->b2on_flags & MC13783_BUTTON_ENABLE)
|
|
mc13xxx_irq_free(priv->mc13783, MC13783_IRQ_ONOFD2, priv);
|
|
if (pdata->b1on_flags & MC13783_BUTTON_ENABLE)
|
|
mc13xxx_irq_free(priv->mc13783, MC13783_IRQ_ONOFD1, priv);
|
|
|
|
mc13xxx_unlock(priv->mc13783);
|
|
|
|
input_unregister_device(priv->pwr);
|
|
kfree(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver mc13783_pwrbutton_driver = {
|
|
.probe = mc13783_pwrbutton_probe,
|
|
.remove = mc13783_pwrbutton_remove,
|
|
.driver = {
|
|
.name = "mc13783-pwrbutton",
|
|
},
|
|
};
|
|
|
|
module_platform_driver(mc13783_pwrbutton_driver);
|
|
|
|
MODULE_ALIAS("platform:mc13783-pwrbutton");
|
|
MODULE_DESCRIPTION("MC13783 Power Button");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Philippe Retornaz");
|