/*
* 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>
#define PM805_CHIP_ID (0x00)
static const struct i2c_device_id pm80x_id_table[] = {
{"88PM805", CHIP_PM805},
{} /* 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 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_TRIGGER_FALLING | 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.
*/
msleep(1);
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;
unsigned int val;
struct regmap *map = chip->regmap;
if (!map) {
dev_err(chip->dev, "regmap is invalid\n");
return -EINVAL;
}
ret = regmap_read(map, PM805_CHIP_ID, &val);
if (ret < 0) {
dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
goto out_irq_init;
}
chip->version = val;
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 = client->dev.platform_data;
ret = pm80x_init(client, id);
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, "%s id 0x%x failed!\n", __func__, chip->id);
goto err_805_init;
}
if (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 = "88PM80X",
.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");
