mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
dc54392921
This code has been working since 2012, as limiting the time between
1ms and 3ms is unlikely to do any harm.
Soothes checkpatch warning:
WARNING: msleep < 20ms can sleep for up to 20ms;
see Documentation/timers/timers-howto.txt
#161: FILE: drivers/mfd/88pm805.c:161:
+ msleep(1);
Signed-off-by: Lee Jones <lee.jones@linaro.org>
293 lines
6.4 KiB
C
293 lines
6.4 KiB
C
/*
|
|
* Base driver for Marvell 88PM805
|
|
*
|
|
* Copyright (C) 2012 Marvell International Ltd.
|
|
* Haojian Zhuang <haojian.zhuang@marvell.com>
|
|
* Joseph(Yossi) Hanin <yhanin@marvell.com>
|
|
* Qiao Zhou <zhouqiao@marvell.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/88pm80x.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/delay.h>
|
|
|
|
static const struct i2c_device_id pm80x_id_table[] = {
|
|
{"88PM805", 0},
|
|
{} /* NULL terminated */
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
|
|
|
|
/* Interrupt Number in 88PM805 */
|
|
enum {
|
|
PM805_IRQ_LDO_OFF, /*0 */
|
|
PM805_IRQ_SRC_DPLL_LOCK, /*1 */
|
|
PM805_IRQ_CLIP_FAULT,
|
|
PM805_IRQ_MIC_CONFLICT,
|
|
PM805_IRQ_HP2_SHRT,
|
|
PM805_IRQ_HP1_SHRT, /*5 */
|
|
PM805_IRQ_FINE_PLL_FAULT,
|
|
PM805_IRQ_RAW_PLL_FAULT,
|
|
PM805_IRQ_VOLP_BTN_DET,
|
|
PM805_IRQ_VOLM_BTN_DET,
|
|
PM805_IRQ_SHRT_BTN_DET, /*10 */
|
|
PM805_IRQ_MIC_DET, /*11 */
|
|
|
|
PM805_MAX_IRQ,
|
|
};
|
|
|
|
static struct resource codec_resources[] = {
|
|
{
|
|
/* Headset microphone insertion or removal */
|
|
.name = "micin",
|
|
.start = PM805_IRQ_MIC_DET,
|
|
.end = PM805_IRQ_MIC_DET,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
/* Audio short HP1 */
|
|
.name = "audio-short1",
|
|
.start = PM805_IRQ_HP1_SHRT,
|
|
.end = PM805_IRQ_HP1_SHRT,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
/* Audio short HP2 */
|
|
.name = "audio-short2",
|
|
.start = PM805_IRQ_HP2_SHRT,
|
|
.end = PM805_IRQ_HP2_SHRT,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static const struct mfd_cell codec_devs[] = {
|
|
{
|
|
.name = "88pm80x-codec",
|
|
.num_resources = ARRAY_SIZE(codec_resources),
|
|
.resources = &codec_resources[0],
|
|
.id = -1,
|
|
},
|
|
};
|
|
|
|
static struct regmap_irq pm805_irqs[] = {
|
|
/* INT0 */
|
|
[PM805_IRQ_LDO_OFF] = {
|
|
.mask = PM805_INT1_HP1_SHRT,
|
|
},
|
|
[PM805_IRQ_SRC_DPLL_LOCK] = {
|
|
.mask = PM805_INT1_HP2_SHRT,
|
|
},
|
|
[PM805_IRQ_CLIP_FAULT] = {
|
|
.mask = PM805_INT1_MIC_CONFLICT,
|
|
},
|
|
[PM805_IRQ_MIC_CONFLICT] = {
|
|
.mask = PM805_INT1_CLIP_FAULT,
|
|
},
|
|
[PM805_IRQ_HP2_SHRT] = {
|
|
.mask = PM805_INT1_LDO_OFF,
|
|
},
|
|
[PM805_IRQ_HP1_SHRT] = {
|
|
.mask = PM805_INT1_SRC_DPLL_LOCK,
|
|
},
|
|
/* INT1 */
|
|
[PM805_IRQ_FINE_PLL_FAULT] = {
|
|
.reg_offset = 1,
|
|
.mask = PM805_INT2_MIC_DET,
|
|
},
|
|
[PM805_IRQ_RAW_PLL_FAULT] = {
|
|
.reg_offset = 1,
|
|
.mask = PM805_INT2_SHRT_BTN_DET,
|
|
},
|
|
[PM805_IRQ_VOLP_BTN_DET] = {
|
|
.reg_offset = 1,
|
|
.mask = PM805_INT2_VOLM_BTN_DET,
|
|
},
|
|
[PM805_IRQ_VOLM_BTN_DET] = {
|
|
.reg_offset = 1,
|
|
.mask = PM805_INT2_VOLP_BTN_DET,
|
|
},
|
|
[PM805_IRQ_SHRT_BTN_DET] = {
|
|
.reg_offset = 1,
|
|
.mask = PM805_INT2_RAW_PLL_FAULT,
|
|
},
|
|
[PM805_IRQ_MIC_DET] = {
|
|
.reg_offset = 1,
|
|
.mask = PM805_INT2_FINE_PLL_FAULT,
|
|
},
|
|
};
|
|
|
|
static int device_irq_init_805(struct pm80x_chip *chip)
|
|
{
|
|
struct regmap *map = chip->regmap;
|
|
unsigned long flags = IRQF_ONESHOT;
|
|
int data, mask, ret = -EINVAL;
|
|
|
|
if (!map || !chip->irq) {
|
|
dev_err(chip->dev, "incorrect parameters\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* irq_mode defines the way of clearing interrupt. it's read-clear by
|
|
* default.
|
|
*/
|
|
mask =
|
|
PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT |
|
|
PM800_STATUS0_INT_MASK;
|
|
|
|
data = PM805_STATUS0_INT_CLEAR;
|
|
ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data);
|
|
/*
|
|
* PM805_INT_STATUS is under 32K clock domain, so need to
|
|
* add proper delay before the next I2C register access.
|
|
*/
|
|
usleep_range(1000, 3000);
|
|
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret =
|
|
regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
|
|
chip->regmap_irq_chip, &chip->irq_data);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void device_irq_exit_805(struct pm80x_chip *chip)
|
|
{
|
|
regmap_del_irq_chip(chip->irq, chip->irq_data);
|
|
}
|
|
|
|
static struct regmap_irq_chip pm805_irq_chip = {
|
|
.name = "88pm805",
|
|
.irqs = pm805_irqs,
|
|
.num_irqs = ARRAY_SIZE(pm805_irqs),
|
|
|
|
.num_regs = 2,
|
|
.status_base = PM805_INT_STATUS1,
|
|
.mask_base = PM805_INT_MASK1,
|
|
.ack_base = PM805_INT_STATUS1,
|
|
};
|
|
|
|
static int device_805_init(struct pm80x_chip *chip)
|
|
{
|
|
int ret = 0;
|
|
struct regmap *map = chip->regmap;
|
|
|
|
if (!map) {
|
|
dev_err(chip->dev, "regmap is invalid\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
chip->regmap_irq_chip = &pm805_irq_chip;
|
|
|
|
ret = device_irq_init_805(chip);
|
|
if (ret < 0) {
|
|
dev_err(chip->dev, "Failed to init pm805 irq!\n");
|
|
goto out_irq_init;
|
|
}
|
|
|
|
ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
|
|
ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
|
|
NULL);
|
|
if (ret < 0) {
|
|
dev_err(chip->dev, "Failed to add codec subdev\n");
|
|
goto out_codec;
|
|
} else
|
|
dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__);
|
|
|
|
return 0;
|
|
|
|
out_codec:
|
|
device_irq_exit_805(chip);
|
|
out_irq_init:
|
|
return ret;
|
|
}
|
|
|
|
static int pm805_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int ret = 0;
|
|
struct pm80x_chip *chip;
|
|
struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
|
|
|
|
ret = pm80x_init(client);
|
|
if (ret) {
|
|
dev_err(&client->dev, "pm805_init fail!\n");
|
|
goto out_init;
|
|
}
|
|
|
|
chip = i2c_get_clientdata(client);
|
|
|
|
ret = device_805_init(chip);
|
|
if (ret) {
|
|
dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");
|
|
goto err_805_init;
|
|
}
|
|
|
|
if (pdata && pdata->plat_config)
|
|
pdata->plat_config(chip, pdata);
|
|
|
|
err_805_init:
|
|
pm80x_deinit();
|
|
out_init:
|
|
return ret;
|
|
}
|
|
|
|
static int pm805_remove(struct i2c_client *client)
|
|
{
|
|
struct pm80x_chip *chip = i2c_get_clientdata(client);
|
|
|
|
mfd_remove_devices(chip->dev);
|
|
device_irq_exit_805(chip);
|
|
|
|
pm80x_deinit();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver pm805_driver = {
|
|
.driver = {
|
|
.name = "88PM805",
|
|
.owner = THIS_MODULE,
|
|
.pm = &pm80x_pm_ops,
|
|
},
|
|
.probe = pm805_probe,
|
|
.remove = pm805_remove,
|
|
.id_table = pm80x_id_table,
|
|
};
|
|
|
|
static int __init pm805_i2c_init(void)
|
|
{
|
|
return i2c_add_driver(&pm805_driver);
|
|
}
|
|
subsys_initcall(pm805_i2c_init);
|
|
|
|
static void __exit pm805_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&pm805_driver);
|
|
}
|
|
module_exit(pm805_i2c_exit);
|
|
|
|
MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
|
|
MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
|
|
MODULE_LICENSE("GPL");
|