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path: root/drivers/mfd/palmas.c
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Diffstat (limited to 'drivers/mfd/palmas.c')
-rw-r--r--drivers/mfd/palmas.c149
1 files changed, 77 insertions, 72 deletions
diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
index a345f9bb7b47..4f8d6e6b19aa 100644
--- a/drivers/mfd/palmas.c
+++ b/drivers/mfd/palmas.c
@@ -23,60 +23,7 @@
#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/palmas.h>
-
-static const struct resource gpadc_resource[] = {
- {
- .name = "EOC_SW",
- .start = PALMAS_GPADC_EOC_SW_IRQ,
- .end = PALMAS_GPADC_EOC_SW_IRQ,
- .flags = IORESOURCE_IRQ,
- }
-};
-
-static const struct resource usb_resource[] = {
- {
- .name = "ID",
- .start = PALMAS_ID_OTG_IRQ,
- .end = PALMAS_ID_OTG_IRQ,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "ID_WAKEUP",
- .start = PALMAS_ID_IRQ,
- .end = PALMAS_ID_IRQ,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "VBUS",
- .start = PALMAS_VBUS_OTG_IRQ,
- .end = PALMAS_VBUS_OTG_IRQ,
- .flags = IORESOURCE_IRQ,
- },
- {
- .name = "VBUS_WAKEUP",
- .start = PALMAS_VBUS_IRQ,
- .end = PALMAS_VBUS_IRQ,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static const struct resource rtc_resource[] = {
- {
- .name = "RTC_ALARM",
- .start = PALMAS_RTC_ALARM_IRQ,
- .end = PALMAS_RTC_ALARM_IRQ,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static const struct resource pwron_resource[] = {
- {
- .name = "PWRON_BUTTON",
- .start = PALMAS_PWRON_IRQ,
- .end = PALMAS_PWRON_IRQ,
- .flags = IORESOURCE_IRQ,
- },
-};
+#include <linux/of_platform.h>
enum palmas_ids {
PALMAS_PMIC_ID,
@@ -111,20 +58,14 @@ static const struct mfd_cell palmas_children[] = {
},
{
.name = "palmas-rtc",
- .num_resources = ARRAY_SIZE(rtc_resource),
- .resources = rtc_resource,
.id = PALMAS_RTC_ID,
},
{
.name = "palmas-pwrbutton",
- .num_resources = ARRAY_SIZE(pwron_resource),
- .resources = pwron_resource,
.id = PALMAS_PWRBUTTON_ID,
},
{
.name = "palmas-gpadc",
- .num_resources = ARRAY_SIZE(gpadc_resource),
- .resources = gpadc_resource,
.id = PALMAS_GPADC_ID,
},
{
@@ -141,8 +82,6 @@ static const struct mfd_cell palmas_children[] = {
},
{
.name = "palmas-usb",
- .num_resources = ARRAY_SIZE(usb_resource),
- .resources = usb_resource,
.id = PALMAS_USB_ID,
}
};
@@ -308,17 +247,56 @@ static struct regmap_irq_chip palmas_irq_chip = {
PALMAS_INT1_MASK),
};
+static void __devinit palmas_dt_to_pdata(struct device_node *node,
+ struct palmas_platform_data *pdata)
+{
+ int ret;
+ u32 prop;
+
+ ret = of_property_read_u32(node, "ti,mux_pad1", &prop);
+ if (!ret) {
+ pdata->mux_from_pdata = 1;
+ pdata->pad1 = prop;
+ }
+
+ ret = of_property_read_u32(node, "ti,mux_pad2", &prop);
+ if (!ret) {
+ pdata->mux_from_pdata = 1;
+ pdata->pad2 = prop;
+ }
+
+ /* The default for this register is all masked */
+ ret = of_property_read_u32(node, "ti,power_ctrl", &prop);
+ if (!ret)
+ pdata->power_ctrl = prop;
+ else
+ pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK |
+ PALMAS_POWER_CTRL_ENABLE1_MASK |
+ PALMAS_POWER_CTRL_ENABLE2_MASK;
+}
+
static int __devinit palmas_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct palmas *palmas;
struct palmas_platform_data *pdata;
+ struct device_node *node = i2c->dev.of_node;
int ret = 0, i;
unsigned int reg, addr;
int slave;
struct mfd_cell *children;
pdata = dev_get_platdata(&i2c->dev);
+
+ if (node && !pdata) {
+ pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
+
+ if (!pdata)
+ return -ENOMEM;
+
+ palmas_dt_to_pdata(node, pdata);
+ }
+
if (!pdata)
return -EINVAL;
@@ -364,7 +342,7 @@ static int __devinit palmas_i2c_probe(struct i2c_client *i2c,
regmap_write(palmas->regmap[slave], addr, reg);
ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
- IRQF_ONESHOT | IRQF_TRIGGER_LOW, -1, &palmas_irq_chip,
+ IRQF_ONESHOT | IRQF_TRIGGER_LOW, 0, &palmas_irq_chip,
&palmas->irq_data);
if (ret < 0)
goto err;
@@ -377,11 +355,11 @@ static int __devinit palmas_i2c_probe(struct i2c_client *i2c,
reg = pdata->pad1;
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
- goto err;
+ goto err_irq;
} else {
ret = regmap_read(palmas->regmap[slave], addr, &reg);
if (ret)
- goto err;
+ goto err_irq;
}
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0))
@@ -412,11 +390,11 @@ static int __devinit palmas_i2c_probe(struct i2c_client *i2c,
reg = pdata->pad2;
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
- goto err;
+ goto err_irq;
} else {
ret = regmap_read(palmas->regmap[slave], addr, &reg);
if (ret)
- goto err;
+ goto err_irq;
}
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4))
@@ -439,18 +417,43 @@ static int __devinit palmas_i2c_probe(struct i2c_client *i2c,
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
- goto err;
+ goto err_irq;
+
+ /*
+ * If we are probing with DT do this the DT way and return here
+ * otherwise continue and add devices using mfd helpers.
+ */
+ if (node) {
+ ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
+ if (ret < 0)
+ goto err_irq;
+ else
+ return ret;
+ }
children = kmemdup(palmas_children, sizeof(palmas_children),
GFP_KERNEL);
if (!children) {
ret = -ENOMEM;
- goto err;
+ goto err_irq;
}
children[PALMAS_PMIC_ID].platform_data = pdata->pmic_pdata;
children[PALMAS_PMIC_ID].pdata_size = sizeof(*pdata->pmic_pdata);
+ children[PALMAS_GPADC_ID].platform_data = pdata->gpadc_pdata;
+ children[PALMAS_GPADC_ID].pdata_size = sizeof(*pdata->gpadc_pdata);
+
+ children[PALMAS_RESOURCE_ID].platform_data = pdata->resource_pdata;
+ children[PALMAS_RESOURCE_ID].pdata_size =
+ sizeof(*pdata->resource_pdata);
+
+ children[PALMAS_USB_ID].platform_data = pdata->usb_pdata;
+ children[PALMAS_USB_ID].pdata_size = sizeof(*pdata->usb_pdata);
+
+ children[PALMAS_CLK_ID].platform_data = pdata->clk_pdata;
+ children[PALMAS_CLK_ID].pdata_size = sizeof(*pdata->clk_pdata);
+
ret = mfd_add_devices(palmas->dev, -1,
children, ARRAY_SIZE(palmas_children),
NULL, regmap_irq_chip_get_base(palmas->irq_data),
@@ -458,13 +461,15 @@ static int __devinit palmas_i2c_probe(struct i2c_client *i2c,
kfree(children);
if (ret < 0)
- goto err;
+ goto err_devices;
return ret;
-err:
+err_devices:
mfd_remove_devices(palmas->dev);
- kfree(palmas);
+err_irq:
+ regmap_del_irq_chip(palmas->irq, palmas->irq_data);
+err:
return ret;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.