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mfd: 88pm860x: Device tree support

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Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Haojian Zhuang 2012-09-21 18:06:52 +08:00 committed by Samuel Ortiz
parent 837c8293ba
commit 2e57d56747
10 changed files with 351 additions and 41 deletions
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85
Documentation/devicetree/bindings/mfd/88pm860x.txt Normal file
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@ -0,0 +1,85 @@
* Marvell 88PM860x Power Management IC
Required parent device properties:
- compatible : "marvell,88pm860x"
- reg : the I2C slave address for the 88pm860x chip
- interrupts : IRQ line for the 88pm860x chip
- interrupt-controller: describes the 88pm860x as an interrupt controller (has its own domain)
- #interrupt-cells : should be 1.
- The cell is the 88pm860x local IRQ number
Optional parent device properties:
- marvell,88pm860x-irq-read-clr: inicates whether interrupt status is cleared by read
- marvell,88pm860x-slave-addr: 88pm860x are two chips solution. <reg> stores the I2C address
of one chip, and this property stores the I2C address of
another chip.
88pm860x consists of a large and varied group of sub-devices:
Device Supply Names Description
------ ------------ -----------
88pm860x-onkey : : On key
88pm860x-rtc : : RTC
88pm8607 : : Regulators
88pm860x-backlight : : Backlight
88pm860x-led : : Led
88pm860x-touch : : Touchscreen
Example:
pmic: 88pm860x@34 {
compatible = "marvell,88pm860x";
reg = <0x34>;
interrupts = <4>;
interrupt-parent = <&intc>;
interrupt-controller;
#interrupt-cells = <1>;
marvell,88pm860x-irq-read-clr;
marvell,88pm860x-slave-addr = <0x11>;
regulators {
BUCK1 {
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1500000>;
regulator-boot-on;
regulator-always-on;
};
LDO1 {
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <2800000>;
regulator-boot-on;
regulator-always-on;
};
};
rtc {
marvell,88pm860x-vrtc = <1>;
};
touch {
marvell,88pm860x-gpadc-prebias = <1>;
marvell,88pm860x-gpadc-slot-cycle = <1>;
marvell,88pm860x-tsi-prebias = <6>;
marvell,88pm860x-pen-prebias = <16>;
marvell,88pm860x-pen-prechg = <2>;
marvell,88pm860x-resistor-X = <300>;
};
backlights {
backlight-0 {
marvell,88pm860x-iset = <4>;
marvell,88pm860x-pwm = <3>;
};
backlight-2 {
};
};
leds {
led0-red {
marvell,88pm860x-iset = <12>;
};
led0-green {
marvell,88pm860x-iset = <12>;
};
led0-blue {
marvell,88pm860x-iset = <12>;
};
};
};

30
Documentation/devicetree/bindings/regulator/88pm860x.txt Normal file
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@ -0,0 +1,30 @@
Marvell 88PM860x regulator
Required properties:
- compatible: "marvell,88pm860x"
- reg: I2C slave address
- regulators: A node that houses a sub-node for each regulator within the
device. Each sub-node is identified using the regulator-compatible
property, with valid values listed below.
Example:
pmic: 88pm860x@34 {
compatible = "marvell,88pm860x";
reg = <0x34>;
regulators {
BUCK1 {
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1500000>;
regulator-boot-on;
regulator-always-on;
};
BUCK3 {
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <3000000>;
regulator-boot-on;
regulator-always-on;
};
};
};

15
Documentation/devicetree/bindings/video/backlight/88pm860x.txt Normal file
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@ -0,0 +1,15 @@
88pm860x-backlight bindings
Optional properties:
- marvell,88pm860x-iset: Current supplies on backlight device.
- marvell,88pm860x-pwm: PWM frequency on backlight device.
Example:
backlights {
backlight-0 {
marvell,88pm860x-iset = <4>;
marvell,88pm860x-pwm = <3>;
};
backlight-2 {
};

46
drivers/input/touchscreen/88pm860x-ts.c
View File

@ -10,6 +10,7 @@
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/input.h>
@ -113,14 +114,31 @@ static void pm860x_touch_close(struct input_dev *dev)
pm860x_set_bits(touch->i2c, MEAS_EN3, data, 0);
}
#ifdef CONFIG_OF
static int __devinit pm860x_touch_dt_init(struct platform_device *pdev,
int *res_x)
{
struct device_node *np = pdev->dev.parent->of_node;
if (!np)
return -ENODEV;
np = of_find_node_by_name(np, "touch");
if (!np) {
dev_err(&pdev->dev, "Can't find touch node\n");
return -EINVAL;
}
of_property_read_u32(np, "marvell,88pm860x-resistor-X", res_x);
return 0;
}
#else
#define pm860x_touch_dt_init(x, y) (-1)
#endif
static int __devinit pm860x_touch_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
struct pm860x_platform_data *pm860x_pdata = \
pdev->dev.parent->platform_data;
struct pm860x_touch_pdata *pdata = NULL;
struct pm860x_touch_pdata *pdata = pdev->dev.platform_data;
struct pm860x_touch *touch;
int irq, ret;
int irq, ret, res_x = 0;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
@ -128,15 +146,13 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
return -EINVAL;
}
if (!pm860x_pdata) {
dev_err(&pdev->dev, "platform data is missing\n");
return -EINVAL;
}
pdata = pm860x_pdata->touch;
if (!pdata) {
dev_err(&pdev->dev, "touchscreen data is missing\n");
return -EINVAL;
if (pm860x_touch_dt_init(pdev, &res_x)) {
if (pdata)
res_x = pdata->res_x;
else {
dev_err(&pdev->dev, "failed to get platform data\n");
return -EINVAL;
}
}
touch = kzalloc(sizeof(struct pm860x_touch), GFP_KERNEL);
@ -159,8 +175,8 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
touch->idev->close = pm860x_touch_close;
touch->chip = chip;
touch->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
touch->irq = irq + chip->irq_base;
touch->res_x = pdata->res_x;
touch->irq = irq;
touch->res_x = res_x;
input_set_drvdata(touch->idev, touch);
ret = request_threaded_irq(touch->irq, NULL, pm860x_touch_handler,

33
drivers/leds/leds-88pm860x.c
View File

@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/leds.h>
@ -123,6 +124,33 @@ static void pm860x_led_set(struct led_classdev *cdev,
schedule_work(&data->work);
}
#ifdef CONFIG_OF
static int pm860x_led_dt_init(struct platform_device *pdev,
struct pm860x_led *data)
{
struct device_node *nproot = pdev->dev.parent->of_node, *np;
int iset = 0;
if (!nproot)
return -ENODEV;
nproot = of_find_node_by_name(nproot, "leds");
if (!nproot) {
dev_err(&pdev->dev, "failed to find leds node\n");
return -ENODEV;
}
for_each_child_of_node(nproot, np) {
if (!of_node_cmp(np->name, data->name)) {
of_property_read_u32(np, "marvell,88pm860x-iset",
&iset);
data->iset = PM8606_LED_CURRENT(iset);
break;
}
}
return 0;
}
#else
#define pm860x_led_dt_init(x, y) (-1)
#endif
static int pm860x_led_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@ -179,8 +207,9 @@ static int pm860x_led_probe(struct platform_device *pdev)
data->chip = chip;
data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
data->port = pdev->id;
if (pdata && pdata->iset)
data->iset = pdata->iset;
if (pm860x_led_dt_init(pdev, data))
if (pdata)
data->iset = pdata->iset;
data->current_brightness = 0;
data->cdev.name = data->name;

62
drivers/mfd/88pm860x-core.c
View File

@ -16,6 +16,8 @@
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@ -1112,12 +1114,6 @@ static void __devexit pm860x_device_exit(struct pm860x_chip *chip)
mfd_remove_devices(chip->dev);
}
static const struct i2c_device_id pm860x_id_table[] = {
{ "88PM860x", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
static int verify_addr(struct i2c_client *i2c)
{
unsigned short addr_8607[] = {0x30, 0x34};
@ -1144,21 +1140,52 @@ static struct regmap_config pm860x_regmap_config = {
.val_bits = 8,
};
static int __devinit pm860x_dt_init(struct device_node *np,
struct device *dev,
struct pm860x_platform_data *pdata)
{
int ret;
if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
pdata->irq_mode = 1;
ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
&pdata->companion_addr);
if (ret) {
dev_err(dev, "Not found \"marvell,88pm860x-slave-addr\" "
"property\n");
pdata->companion_addr = 0;
}
return 0;
}
static int __devinit pm860x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pm860x_platform_data *pdata = client->dev.platform_data;
struct device_node *node = client->dev.of_node;
struct pm860x_chip *chip;
int ret;
if (!pdata) {
if (node && !pdata) {
/* parse DT to get platform data */
pdata = devm_kzalloc(&client->dev,
sizeof(struct pm860x_platform_data),
GFP_KERNEL);
if (!pdata)
return -ENOMEM;
ret = pm860x_dt_init(node, &client->dev, pdata);
if (ret)
goto err;
} else if (!pdata) {
pr_info("No platform data in %s!\n", __func__);
return -EINVAL;
}
chip = kzalloc(sizeof(struct pm860x_chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
if (chip == NULL) {
ret = -ENOMEM;
goto err;
}
chip->id = verify_addr(client);
chip->regmap = regmap_init_i2c(client, &pm860x_regmap_config);
@ -1198,6 +1225,10 @@ static int __devinit pm860x_probe(struct i2c_client *client,
pm860x_device_init(chip, pdata);
return 0;
err:
if (node)
devm_kfree(&client->dev, pdata);
return ret;
}
static int __devexit pm860x_remove(struct i2c_client *client)
@ -1238,11 +1269,24 @@ static int pm860x_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
static const struct i2c_device_id pm860x_id_table[] = {
{ "88PM860x", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
static const struct of_device_id pm860x_dt_ids[] = {
{ .compatible = "marvell,88pm860x", },
{},
};
MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
static struct i2c_driver pm860x_driver = {
.driver = {
.name = "88PM860x",
.owner = THIS_MODULE,
.pm = &pm860x_pm_ops,
.of_match_table = of_match_ptr(pm860x_dt_ids),
},
.probe = pm860x_probe,
.remove = __devexit_p(pm860x_remove),

35
drivers/regulator/88pm8607.c
View File

@ -12,6 +12,8 @@
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/regulator/of_regulator.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
@ -364,6 +366,34 @@ static struct pm8607_regulator_info pm8606_regulator_info[] = {
PM8606_PREG(PREREGULATORB, 5),
};
#ifdef CONFIG_OF
static int pm8607_regulator_dt_init(struct platform_device *pdev,
struct pm8607_regulator_info *info,
struct regulator_config *config)
{
struct device_node *nproot, *np;
nproot = pdev->dev.parent->of_node;
if (!nproot)
return -ENODEV;
nproot = of_find_node_by_name(nproot, "regulators");
if (!nproot) {
dev_err(&pdev->dev, "failed to find regulators node\n");
return -ENODEV;
}
for_each_child_of_node(nproot, np) {
if (!of_node_cmp(np->name, info->desc.name)) {
config->init_data =
of_get_regulator_init_data(&pdev->dev, np);
config->of_node = np;
break;
}
}
return 0;
}
#else
#define pm8607_regulator_dt_init(x, y, z) (-1)
#endif
static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@ -402,9 +432,12 @@ static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
info->slope_double = 1;
config.dev = &pdev->dev;
config.init_data = pdata;
config.driver_data = info;
if (pm8607_regulator_dt_init(pdev, info, &config))
if (pdata)
config.init_data = pdata;
if (chip->id == CHIP_PM8607)
config.regmap = chip->regmap;
else

43
drivers/rtc/rtc-88pm860x.c
View File

@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mutex.h>
@ -284,6 +285,28 @@ static void calibrate_vrtc_work(struct work_struct *work)
}
#endif
#ifdef CONFIG_OF
static int __devinit pm860x_rtc_dt_init(struct platform_device *pdev,
struct pm860x_rtc_info *info)
{
struct device_node *np = pdev->dev.parent->of_node;
int ret;
if (!np)
return -ENODEV;
np = of_find_node_by_name(np, "rtc");
if (!np) {
dev_err(&pdev->dev, "failed to find rtc node\n");
return -ENODEV;
}
ret = of_property_read_u32(np, "marvell,88pm860x-vrtc", &info->vrtc);
if (ret)
info->vrtc = 0;
return 0;
}
#else
#define pm860x_rtc_dt_init(x, y) (-1)
#endif
static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@ -294,8 +317,6 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
int ret;
pdata = pdev->dev.platform_data;
if (pdata == NULL)
dev_warn(&pdev->dev, "No platform data!\n");
info = kzalloc(sizeof(struct pm860x_rtc_info), GFP_KERNEL);
if (!info)
@ -345,9 +366,11 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
}
}
rtc_tm_to_time(&tm, &ticks);
if (pdata && pdata->sync) {
pdata->sync(ticks);
info->sync = pdata->sync;
if (pm860x_rtc_dt_init(pdev, info)) {
if (pdata && pdata->sync) {
pdata->sync(ticks);
info->sync = pdata->sync;
}
}
info->rtc_dev = rtc_device_register("88pm860x-rtc", &pdev->dev,
@ -366,10 +389,12 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
#ifdef VRTC_CALIBRATION
/* <00> -- 2.7V, <01> -- 2.9V, <10> -- 3.1V, <11> -- 3.3V */
if (pdata && pdata->vrtc)
info->vrtc = pdata->vrtc & 0x3;
else
info->vrtc = 1;
if (pm860x_rtc_dt_init(pdev, info)) {
if (pdata && pdata->vrtc)
info->vrtc = pdata->vrtc & 0x3;
else
info->vrtc = 1;
}
pm860x_set_bits(info->i2c, PM8607_MEAS_EN2, MEAS2_VRTC, MEAS2_VRTC);
/* calibrate VRTC */

39
drivers/video/backlight/88pm860x_bl.c
View File

@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/fb.h>
@ -159,6 +160,36 @@ static const struct backlight_ops pm860x_backlight_ops = {
.get_brightness = pm860x_backlight_get_brightness,
};
#ifdef CONFIG_OF
static int pm860x_backlight_dt_init(struct platform_device *pdev,
struct pm860x_backlight_data *data,
char *name)
{
struct device_node *nproot = pdev->dev.parent->of_node, *np;
int iset = 0;
if (!nproot)
return -ENODEV;
nproot = of_find_node_by_name(nproot, "backlights");
if (!nproot) {
dev_err(&pdev->dev, "failed to find backlights node\n");
return -ENODEV;
}
for_each_child_of_node(nproot, np) {
if (!of_node_cmp(np->name, name)) {
of_property_read_u32(np, "marvell,88pm860x-iset",
&iset);
data->iset = PM8606_WLED_CURRENT(iset);
of_property_read_u32(np, "marvell,88pm860x-pwm",
&data->pwm);
break;
}
}
return 0;
}
#else
#define pm860x_backlight_dt_init(x, y, z) (-1)
#endif
static int pm860x_backlight_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@ -203,9 +234,11 @@ static int pm860x_backlight_probe(struct platform_device *pdev)
data->i2c = (chip->id == CHIP_PM8606) ? chip->client \
: chip->companion;
data->current_brightness = MAX_BRIGHTNESS;
if (pdata) {
data->pwm = pdata->pwm;
data->iset = pdata->iset;
if (pm860x_backlight_dt_init(pdev, data, name)) {
if (pdata) {
data->pwm = pdata->pwm;
data->iset = pdata->iset;
}
}
memset(&props, 0, sizeof(struct backlight_properties));

4
include/linux/mfd/88pm860x.h
View File

@ -306,7 +306,7 @@ struct pm860x_chip {
struct regmap *regmap_companion;
int buck3_double; /* DVC ramp slope double */
unsigned short companion_addr;
int companion_addr;
unsigned short osc_vote;
int id;
int irq_mode;
@ -376,7 +376,7 @@ struct pm860x_platform_data {
struct regulator_init_data *ldo_vibrator;
struct regulator_init_data *ldo14;
unsigned short companion_addr; /* I2C address of companion chip */
int companion_addr; /* I2C address of companion chip */
int i2c_port; /* Controlled by GI2C or PI2C */
int irq_mode; /* Clear interrupt by read/write(0/1) */
int irq_base; /* IRQ base number of 88pm860x */