mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
0e777366fb
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
284 lines
7.3 KiB
C
284 lines
7.3 KiB
C
/*
|
|
* Core driver for TI TPS65090 PMIC family
|
|
*
|
|
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
|
|
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/tps65090.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/err.h>
|
|
|
|
#define NUM_INT_REG 2
|
|
#define TOTAL_NUM_REG 0x18
|
|
|
|
#define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
|
|
#define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
|
|
#define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
|
|
#define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4
|
|
#define TPS65090_INT1_MASK_CHARGING_COMPLETE 5
|
|
#define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6
|
|
#define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7
|
|
#define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET1 1
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET2 2
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET3 3
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET4 4
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET5 5
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET6 6
|
|
#define TPS65090_INT2_MASK_OVERLOAD_FET7 7
|
|
|
|
static struct resource charger_resources[] = {
|
|
{
|
|
.start = TPS65090_IRQ_VAC_STATUS_CHANGE,
|
|
.end = TPS65090_IRQ_VAC_STATUS_CHANGE,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
enum tps65090_cells {
|
|
PMIC = 0,
|
|
CHARGER = 1,
|
|
};
|
|
|
|
static struct mfd_cell tps65090s[] = {
|
|
[PMIC] = {
|
|
.name = "tps65090-pmic",
|
|
},
|
|
[CHARGER] = {
|
|
.name = "tps65090-charger",
|
|
.num_resources = ARRAY_SIZE(charger_resources),
|
|
.resources = &charger_resources[0],
|
|
.of_compatible = "ti,tps65090-charger",
|
|
},
|
|
};
|
|
|
|
static const struct regmap_irq tps65090_irqs[] = {
|
|
/* INT1 IRQs*/
|
|
[TPS65090_IRQ_VAC_STATUS_CHANGE] = {
|
|
.mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
|
|
},
|
|
[TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
|
|
.mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
|
|
},
|
|
[TPS65090_IRQ_BAT_STATUS_CHANGE] = {
|
|
.mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
|
|
},
|
|
[TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
|
|
.mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
|
|
},
|
|
[TPS65090_IRQ_CHARGING_COMPLETE] = {
|
|
.mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_DCDC1] = {
|
|
.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_DCDC2] = {
|
|
.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
|
|
},
|
|
/* INT2 IRQs*/
|
|
[TPS65090_IRQ_OVERLOAD_DCDC3] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET1] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET2] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET3] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET4] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET5] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET6] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
|
|
},
|
|
[TPS65090_IRQ_OVERLOAD_FET7] = {
|
|
.reg_offset = 1,
|
|
.mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
|
|
},
|
|
};
|
|
|
|
static struct regmap_irq_chip tps65090_irq_chip = {
|
|
.name = "tps65090",
|
|
.irqs = tps65090_irqs,
|
|
.num_irqs = ARRAY_SIZE(tps65090_irqs),
|
|
.num_regs = NUM_INT_REG,
|
|
.status_base = TPS65090_REG_INTR_STS,
|
|
.mask_base = TPS65090_REG_INTR_MASK,
|
|
.mask_invert = true,
|
|
};
|
|
|
|
static bool is_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
/* Nearly all registers have status bits mixed in, except a few */
|
|
switch (reg) {
|
|
case TPS65090_REG_INTR_MASK:
|
|
case TPS65090_REG_INTR_MASK2:
|
|
case TPS65090_REG_CG_CTRL0:
|
|
case TPS65090_REG_CG_CTRL1:
|
|
case TPS65090_REG_CG_CTRL2:
|
|
case TPS65090_REG_CG_CTRL3:
|
|
case TPS65090_REG_CG_CTRL4:
|
|
case TPS65090_REG_CG_CTRL5:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static const struct regmap_config tps65090_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = TOTAL_NUM_REG,
|
|
.num_reg_defaults_raw = TOTAL_NUM_REG,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.volatile_reg = is_volatile_reg,
|
|
};
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id tps65090_of_match[] = {
|
|
{ .compatible = "ti,tps65090",},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tps65090_of_match);
|
|
#endif
|
|
|
|
static int tps65090_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct tps65090_platform_data *pdata = dev_get_platdata(&client->dev);
|
|
int irq_base = 0;
|
|
struct tps65090 *tps65090;
|
|
int ret;
|
|
|
|
if (!pdata && !client->dev.of_node) {
|
|
dev_err(&client->dev,
|
|
"tps65090 requires platform data or of_node\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (pdata)
|
|
irq_base = pdata->irq_base;
|
|
|
|
tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
|
|
if (!tps65090) {
|
|
dev_err(&client->dev, "mem alloc for tps65090 failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
tps65090->dev = &client->dev;
|
|
i2c_set_clientdata(client, tps65090);
|
|
|
|
tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
|
|
if (IS_ERR(tps65090->rmap)) {
|
|
ret = PTR_ERR(tps65090->rmap);
|
|
dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if (client->irq) {
|
|
ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
|
|
IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base,
|
|
&tps65090_irq_chip, &tps65090->irq_data);
|
|
if (ret) {
|
|
dev_err(&client->dev,
|
|
"IRQ init failed with err: %d\n", ret);
|
|
return ret;
|
|
}
|
|
} else {
|
|
/* Don't tell children they have an IRQ that'll never fire */
|
|
tps65090s[CHARGER].num_resources = 0;
|
|
}
|
|
|
|
ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
|
|
ARRAY_SIZE(tps65090s), NULL,
|
|
0, regmap_irq_get_domain(tps65090->irq_data));
|
|
if (ret) {
|
|
dev_err(&client->dev, "add mfd devices failed with err: %d\n",
|
|
ret);
|
|
goto err_irq_exit;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_irq_exit:
|
|
if (client->irq)
|
|
regmap_del_irq_chip(client->irq, tps65090->irq_data);
|
|
return ret;
|
|
}
|
|
|
|
static int tps65090_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct tps65090 *tps65090 = i2c_get_clientdata(client);
|
|
|
|
mfd_remove_devices(tps65090->dev);
|
|
if (client->irq)
|
|
regmap_del_irq_chip(client->irq, tps65090->irq_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id tps65090_id_table[] = {
|
|
{ "tps65090", 0 },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tps65090_id_table);
|
|
|
|
static struct i2c_driver tps65090_driver = {
|
|
.driver = {
|
|
.name = "tps65090",
|
|
.of_match_table = of_match_ptr(tps65090_of_match),
|
|
},
|
|
.probe = tps65090_i2c_probe,
|
|
.remove = tps65090_i2c_remove,
|
|
.id_table = tps65090_id_table,
|
|
};
|
|
|
|
static int __init tps65090_init(void)
|
|
{
|
|
return i2c_add_driver(&tps65090_driver);
|
|
}
|
|
subsys_initcall(tps65090_init);
|
|
|
|
static void __exit tps65090_exit(void)
|
|
{
|
|
i2c_del_driver(&tps65090_driver);
|
|
}
|
|
module_exit(tps65090_exit);
|
|
|
|
MODULE_DESCRIPTION("TPS65090 core driver");
|
|
MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
|
|
MODULE_LICENSE("GPL v2");
|