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Char / misc driver patches for 3.16-rc1

Browse source 
Here is the big char / misc driver updates for 3.16-rc1.
 
 Lots of different driver updates for a variety of different drivers and
 minor driver subsystems.
 
 All have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Merge tag 'char-misc-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into next

Pull char/misc driver patches from Greg KH:
 "Here is the big char / misc driver update for 3.16-rc1.

  Lots of different driver updates for a variety of different drivers
  and minor driver subsystems.

  All have been in linux-next with no reported issues"

* tag 'char-misc-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (79 commits)
  hv: use correct order when freeing monitor_pages
  spmi: of: fixup generic SPMI devicetree binding example
  applicom: dereferencing NULL on error path
  misc: genwqe: fix uninitialized return value in genwqe_free_sync_sgl()
  miscdevice.h: Simple syntax fix to make pointers consistent.
  MAINTAINERS: Add miscdevice.h to file list for char/misc drivers.
  mcb: Add support for shared PCI IRQs
  drivers: Remove duplicate conditionally included subdirs
  misc: atmel_pwm: only build for supported platforms
  mei: me: move probe quirk to cfg structure
  mei: add per device configuration
  mei: me: read H_CSR after asserting reset
  mei: me: drop harmful wait optimization
  mei: me: fix hw ready reset flow
  mei: fix memory leak of mei_clients array
  uio: fix vma io range check in mmap
  drivers: uio_dmem_genirq: Fix memory leak in uio_dmem_genirq_probe()
  w1: do not unlock unheld list_mutex in __w1_remove_master_device()
  w1: optional bundling of netlink kernel replies
  connector: allow multiple messages to be sent in one packet
  ...
This commit is contained in:
Linus Torvalds 2014-06-03 08:06:56 -07:00
commit 4046136afb
68 changed files with 2931 additions and 787 deletions
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6
drivers/mfd/Kconfig
View file

@ -331,15 +331,15 @@ config MFD_88PM860X
battery-charger under the corresponding menus.
config MFD_MAX14577
bool "Maxim Semiconductor MAX14577 MUIC + Charger Support"
bool "Maxim Semiconductor MAX14577/77836 MUIC + Charger Support"
depends on I2C=y
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
select IRQ_DOMAIN
help
Say yes here to add support for Maxim Semiconductor MAX14577.
This is a Micro-USB IC with Charger controls on chip.
Say yes here to add support for Maxim Semiconductor MAX14577 and
MAX77836 Micro-USB ICs with battery charger.
This driver provides common support for accessing the device;
additional drivers must be enabled in order to use the functionality
of the device.

315
drivers/mfd/max14577.c
View file

@ -1,7 +1,7 @@
/*
* max14577.c - mfd core driver for the Maxim 14577
* max14577.c - mfd core driver for the Maxim 14577/77836
*
* Copyright (C) 2013 Samsung Electrnoics
* Copyright (C) 2014 Samsung Electrnoics
* Chanwoo Choi <cw00.choi@samsung.com>
* Krzysztof Kozlowski <k.kozlowski@samsung.com>
*
@ -21,6 +21,7 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/of_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max14577.h>
#include <linux/mfd/max14577-private.h>
@ -37,7 +38,38 @@ static struct mfd_cell max14577_devs[] = {
{ .name = "max14577-charger", },
};
static bool max14577_volatile_reg(struct device *dev, unsigned int reg)
static struct mfd_cell max77836_devs[] = {
{
.name = "max77836-muic",
.of_compatible = "maxim,max77836-muic",
},
{
.name = "max77836-regulator",
.of_compatible = "maxim,max77836-regulator",
},
{
.name = "max77836-charger",
.of_compatible = "maxim,max77836-charger",
},
{
.name = "max77836-battery",
.of_compatible = "maxim,max77836-battery",
},
};
static struct of_device_id max14577_dt_match[] = {
{
.compatible = "maxim,max14577",
.data = (void *)MAXIM_DEVICE_TYPE_MAX14577,
},
{
.compatible = "maxim,max77836",
.data = (void *)MAXIM_DEVICE_TYPE_MAX77836,
},
{},
};
static bool max14577_muic_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case MAX14577_REG_INT1 ... MAX14577_REG_STATUS3:
@ -48,49 +80,221 @@ static bool max14577_volatile_reg(struct device *dev, unsigned int reg)
return false;
}
static const struct regmap_config max14577_regmap_config = {
static bool max77836_muic_volatile_reg(struct device *dev, unsigned int reg)
{
/* Any max14577 volatile registers are also max77836 volatile. */
if (max14577_muic_volatile_reg(dev, reg))
return true;
switch (reg) {
case MAX77836_FG_REG_VCELL_MSB ... MAX77836_FG_REG_SOC_LSB:
case MAX77836_FG_REG_CRATE_MSB ... MAX77836_FG_REG_CRATE_LSB:
case MAX77836_FG_REG_STATUS_H ... MAX77836_FG_REG_STATUS_L:
case MAX77836_PMIC_REG_INTSRC:
case MAX77836_PMIC_REG_TOPSYS_INT:
case MAX77836_PMIC_REG_TOPSYS_STAT:
return true;
default:
break;
}
return false;
}
static const struct regmap_config max14577_muic_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = max14577_volatile_reg,
.volatile_reg = max14577_muic_volatile_reg,
.max_register = MAX14577_REG_END,
};
static const struct regmap_config max77836_pmic_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = max77836_muic_volatile_reg,
.max_register = MAX77836_PMIC_REG_END,
};
static const struct regmap_irq max14577_irqs[] = {
/* INT1 interrupts */
{ .reg_offset = 0, .mask = INT1_ADC_MASK, },
{ .reg_offset = 0, .mask = INT1_ADCLOW_MASK, },
{ .reg_offset = 0, .mask = INT1_ADCERR_MASK, },
{ .reg_offset = 0, .mask = MAX14577_INT1_ADC_MASK, },
{ .reg_offset = 0, .mask = MAX14577_INT1_ADCLOW_MASK, },
{ .reg_offset = 0, .mask = MAX14577_INT1_ADCERR_MASK, },
/* INT2 interrupts */
{ .reg_offset = 1, .mask = INT2_CHGTYP_MASK, },
{ .reg_offset = 1, .mask = INT2_CHGDETRUN_MASK, },
{ .reg_offset = 1, .mask = INT2_DCDTMR_MASK, },
{ .reg_offset = 1, .mask = INT2_DBCHG_MASK, },
{ .reg_offset = 1, .mask = INT2_VBVOLT_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_CHGTYP_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_CHGDETRUN_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_DCDTMR_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_DBCHG_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_VBVOLT_MASK, },
/* INT3 interrupts */
{ .reg_offset = 2, .mask = INT3_EOC_MASK, },
{ .reg_offset = 2, .mask = INT3_CGMBC_MASK, },
{ .reg_offset = 2, .mask = INT3_OVP_MASK, },
{ .reg_offset = 2, .mask = INT3_MBCCHGERR_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_EOC_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_CGMBC_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_OVP_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_MBCCHGERR_MASK, },
};
static const struct regmap_irq_chip max14577_irq_chip = {
.name = "max14577",
.status_base = MAX14577_REG_INT1,
.mask_base = MAX14577_REG_INTMASK1,
.mask_invert = 1,
.mask_invert = true,
.num_regs = 3,
.irqs = max14577_irqs,
.num_irqs = ARRAY_SIZE(max14577_irqs),
};
static const struct regmap_irq max77836_muic_irqs[] = {
/* INT1 interrupts */
{ .reg_offset = 0, .mask = MAX14577_INT1_ADC_MASK, },
{ .reg_offset = 0, .mask = MAX14577_INT1_ADCLOW_MASK, },
{ .reg_offset = 0, .mask = MAX14577_INT1_ADCERR_MASK, },
{ .reg_offset = 0, .mask = MAX77836_INT1_ADC1K_MASK, },
/* INT2 interrupts */
{ .reg_offset = 1, .mask = MAX14577_INT2_CHGTYP_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_CHGDETRUN_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_DCDTMR_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_DBCHG_MASK, },
{ .reg_offset = 1, .mask = MAX14577_INT2_VBVOLT_MASK, },
{ .reg_offset = 1, .mask = MAX77836_INT2_VIDRM_MASK, },
/* INT3 interrupts */
{ .reg_offset = 2, .mask = MAX14577_INT3_EOC_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_CGMBC_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_OVP_MASK, },
{ .reg_offset = 2, .mask = MAX14577_INT3_MBCCHGERR_MASK, },
};
static const struct regmap_irq_chip max77836_muic_irq_chip = {
.name = "max77836-muic",
.status_base = MAX14577_REG_INT1,
.mask_base = MAX14577_REG_INTMASK1,
.mask_invert = true,
.num_regs = 3,
.irqs = max77836_muic_irqs,
.num_irqs = ARRAY_SIZE(max77836_muic_irqs),
};
static const struct regmap_irq max77836_pmic_irqs[] = {
{ .reg_offset = 0, .mask = MAX77836_TOPSYS_INT_T120C_MASK, },
{ .reg_offset = 0, .mask = MAX77836_TOPSYS_INT_T140C_MASK, },
};
static const struct regmap_irq_chip max77836_pmic_irq_chip = {
.name = "max77836-pmic",
.status_base = MAX77836_PMIC_REG_TOPSYS_INT,
.mask_base = MAX77836_PMIC_REG_TOPSYS_INT_MASK,
.mask_invert = false,
.num_regs = 1,
.irqs = max77836_pmic_irqs,
.num_irqs = ARRAY_SIZE(max77836_pmic_irqs),
};
static void max14577_print_dev_type(struct max14577 *max14577)
{
u8 reg_data, vendor_id, device_id;
int ret;
ret = max14577_read_reg(max14577->regmap, MAX14577_REG_DEVICEID,
&reg_data);
if (ret) {
dev_err(max14577->dev,
"Failed to read DEVICEID register: %d\n", ret);
return;
}
vendor_id = ((reg_data & DEVID_VENDORID_MASK) >>
DEVID_VENDORID_SHIFT);
device_id = ((reg_data & DEVID_DEVICEID_MASK) >>
DEVID_DEVICEID_SHIFT);
dev_info(max14577->dev, "Device type: %u (ID: 0x%x, vendor: 0x%x)\n",
max14577->dev_type, device_id, vendor_id);
}
/*
* Max77836 specific initialization code for driver probe.
* Adds new I2C dummy device, regmap and regmap IRQ chip.
* Unmasks Interrupt Source register.
*
* On success returns 0.
* On failure returns errno and reverts any changes done so far (e.g. remove
* I2C dummy device), except masking the INT SRC register.
*/
static int max77836_init(struct max14577 *max14577)
{
int ret;
u8 intsrc_mask;
max14577->i2c_pmic = i2c_new_dummy(max14577->i2c->adapter,
I2C_ADDR_PMIC);
if (!max14577->i2c_pmic) {
dev_err(max14577->dev, "Failed to register PMIC I2C device\n");
return -ENODEV;
}
i2c_set_clientdata(max14577->i2c_pmic, max14577);
max14577->regmap_pmic = devm_regmap_init_i2c(max14577->i2c_pmic,
&max77836_pmic_regmap_config);
if (IS_ERR(max14577->regmap_pmic)) {
ret = PTR_ERR(max14577->regmap_pmic);
dev_err(max14577->dev, "Failed to allocate PMIC register map: %d\n",
ret);
goto err;
}
/* Un-mask MAX77836 Interrupt Source register */
ret = max14577_read_reg(max14577->regmap_pmic,
MAX77836_PMIC_REG_INTSRC_MASK, &intsrc_mask);
if (ret < 0) {
dev_err(max14577->dev, "Failed to read PMIC register\n");
goto err;
}
intsrc_mask &= ~(MAX77836_INTSRC_MASK_TOP_INT_MASK);
intsrc_mask &= ~(MAX77836_INTSRC_MASK_MUIC_CHG_INT_MASK);
ret = max14577_write_reg(max14577->regmap_pmic,
MAX77836_PMIC_REG_INTSRC_MASK, intsrc_mask);
if (ret < 0) {
dev_err(max14577->dev, "Failed to write PMIC register\n");
goto err;
}
ret = regmap_add_irq_chip(max14577->regmap_pmic, max14577->irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED,
0, &max77836_pmic_irq_chip,
&max14577->irq_data_pmic);
if (ret != 0) {
dev_err(max14577->dev, "Failed to request PMIC IRQ %d: %d\n",
max14577->irq, ret);
goto err;
}
return 0;
err:
i2c_unregister_device(max14577->i2c_pmic);
return ret;
}
/*
* Max77836 specific de-initialization code for driver remove.
*/
static void max77836_remove(struct max14577 *max14577)
{
regmap_del_irq_chip(max14577->irq, max14577->irq_data_pmic);
i2c_unregister_device(max14577->i2c_pmic);
}
static int max14577_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct max14577 *max14577;
struct max14577_platform_data *pdata = dev_get_platdata(&i2c->dev);
struct device_node *np = i2c->dev.of_node;
u8 reg_data;
int ret = 0;
const struct regmap_irq_chip *irq_chip;
struct mfd_cell *mfd_devs;
unsigned int mfd_devs_size;
int irq_flags;
if (np) {
pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
@ -113,7 +317,8 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
max14577->i2c = i2c;
max14577->irq = i2c->irq;
max14577->regmap = devm_regmap_init_i2c(i2c, &max14577_regmap_config);
max14577->regmap = devm_regmap_init_i2c(i2c,
&max14577_muic_regmap_config);
if (IS_ERR(max14577->regmap)) {
ret = PTR_ERR(max14577->regmap);
dev_err(max14577->dev, "Failed to allocate register map: %d\n",
@ -121,23 +326,36 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
return ret;
}
ret = max14577_read_reg(max14577->regmap, MAX14577_REG_DEVICEID,
&reg_data);
if (ret) {
dev_err(max14577->dev, "Device not found on this channel: %d\n",
ret);
return ret;
if (np) {
const struct of_device_id *of_id;
of_id = of_match_device(max14577_dt_match, &i2c->dev);
if (of_id)
max14577->dev_type = (unsigned int)of_id->data;
} else {
max14577->dev_type = id->driver_data;
}
max14577_print_dev_type(max14577);
switch (max14577->dev_type) {
case MAXIM_DEVICE_TYPE_MAX77836:
irq_chip = &max77836_muic_irq_chip;
mfd_devs = max77836_devs;
mfd_devs_size = ARRAY_SIZE(max77836_devs);
irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
break;
case MAXIM_DEVICE_TYPE_MAX14577:
default:
irq_chip = &max14577_irq_chip;
mfd_devs = max14577_devs;
mfd_devs_size = ARRAY_SIZE(max14577_devs);
irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
break;
}
max14577->vendor_id = ((reg_data & DEVID_VENDORID_MASK) >>
DEVID_VENDORID_SHIFT);
max14577->device_id = ((reg_data & DEVID_DEVICEID_MASK) >>
DEVID_DEVICEID_SHIFT);
dev_info(max14577->dev, "Device ID: 0x%x, vendor: 0x%x\n",
max14577->device_id, max14577->vendor_id);
ret = regmap_add_irq_chip(max14577->regmap, max14577->irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 0,
&max14577_irq_chip,
irq_flags, 0, irq_chip,
&max14577->irq_data);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
@ -145,8 +363,15 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
return ret;
}
ret = mfd_add_devices(max14577->dev, -1, max14577_devs,
ARRAY_SIZE(max14577_devs), NULL, 0,
/* Max77836 specific initialization code (additional regmap) */
if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836) {
ret = max77836_init(max14577);
if (ret < 0)
goto err_max77836;
}
ret = mfd_add_devices(max14577->dev, -1, mfd_devs,
mfd_devs_size, NULL, 0,
regmap_irq_get_domain(max14577->irq_data));
if (ret < 0)
goto err_mfd;
@ -156,6 +381,9 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
return 0;
err_mfd:
if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836)
max77836_remove(max14577);
err_max77836:
regmap_del_irq_chip(max14577->irq, max14577->irq_data);
return ret;
@ -167,12 +395,15 @@ static int max14577_i2c_remove(struct i2c_client *i2c)
mfd_remove_devices(max14577->dev);
regmap_del_irq_chip(max14577->irq, max14577->irq_data);
if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836)
max77836_remove(max14577);
return 0;
}
static const struct i2c_device_id max14577_i2c_id[] = {
{ "max14577", 0 },
{ "max14577", MAXIM_DEVICE_TYPE_MAX14577, },
{ "max77836", MAXIM_DEVICE_TYPE_MAX77836, },
{ }
};
MODULE_DEVICE_TABLE(i2c, max14577_i2c_id);
@ -215,11 +446,6 @@ static int max14577_resume(struct device *dev)
}
#endif /* CONFIG_PM_SLEEP */
static struct of_device_id max14577_dt_match[] = {
{ .compatible = "maxim,max14577", },
{},
};
static SIMPLE_DEV_PM_OPS(max14577_pm, max14577_suspend, max14577_resume);
static struct i2c_driver max14577_i2c_driver = {
@ -236,6 +462,9 @@ static struct i2c_driver max14577_i2c_driver = {
static int __init max14577_i2c_init(void)
{
BUILD_BUG_ON(ARRAY_SIZE(max14577_i2c_id) != MAXIM_DEVICE_TYPE_NUM);
BUILD_BUG_ON(ARRAY_SIZE(max14577_dt_match) != MAXIM_DEVICE_TYPE_NUM);
return i2c_add_driver(&max14577_i2c_driver);
}
subsys_initcall(max14577_i2c_init);
@ -247,5 +476,5 @@ static void __exit max14577_i2c_exit(void)
module_exit(max14577_i2c_exit);
MODULE_AUTHOR("Chanwoo Choi <[email protected]>, Krzysztof Kozlowski <[email protected]>");
MODULE_DESCRIPTION("MAXIM 14577 multi-function core driver");
MODULE_DESCRIPTION("Maxim 14577/77836 multi-function core driver");
MODULE_LICENSE("GPL");