[PATCH V5 2/2] mfd: stmpe: Update DT support in stmpe driver
From: Viresh Kumar
Date: Thu Nov 29 2012 - 09:40:29 EST
From: Vipul Kumar Samar <vipulkumar.samar@xxxxxx>
This patch extends existing DT support for stmpe devices. This updates:
- DT support from stmpe SPI and I2C drivers
- missing header files in stmpe.c
- stmpe_of_probe() with pwm, rotator and new bindings.
- Bindings are updated in binding document.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@xxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
V4->V5:
------
- 2/3 and 3/3 merged.
- irq_trigger is kept same for non-DT booti.
@Lee: I haven't added your Acked-by, because this differs from your Acked
version.
Documentation/devicetree/bindings/mfd/stmpe.txt | 9 ++++++---
drivers/mfd/stmpe-i2c.c | 15 ++++++++++++++
drivers/mfd/stmpe-spi.c | 15 ++++++++++++++
drivers/mfd/stmpe.c | 27 +++++++++++++++++++------
4 files changed, 57 insertions(+), 9 deletions(-)
diff --git a/Documentation/devicetree/bindings/mfd/stmpe.txt b/Documentation/devicetree/bindings/mfd/stmpe.txt
index 8f0aeda..d2d88d9 100644
--- a/Documentation/devicetree/bindings/mfd/stmpe.txt
+++ b/Documentation/devicetree/bindings/mfd/stmpe.txt
@@ -1,8 +1,11 @@
-* STMPE Multi-Functional Device
+* ST Microelectronics STMPE Multi-Functional Device
+
+STMPE is an MFD device which may expose following inbuilt devices: gpio, keypad,
+touchscreen, adc, pwm, rotator.
Required properties:
- - compatible : "st,stmpe[811|1601|2401|2403]"
- - reg : I2C address of the device
+ - compatible : "st,stmpe[610|801|811|1601|2401|2403]"
+ - reg : I2C/SPI address of the device
Optional properties:
- interrupts : The interrupt outputs from the controller
diff --git a/drivers/mfd/stmpe-i2c.c b/drivers/mfd/stmpe-i2c.c
index c734dc3..003c49b 100644
--- a/drivers/mfd/stmpe-i2c.c
+++ b/drivers/mfd/stmpe-i2c.c
@@ -13,6 +13,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/types.h>
#include "stmpe.h"
@@ -81,6 +82,19 @@ static const struct i2c_device_id stmpe_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, stmpe_id);
+#ifdef CONFIG_OF
+static const struct of_device_id stmpe_dt_ids[] = {
+ { .compatible = "st,stmpe610", .data = &stmpe_i2c_id[0], },
+ { .compatible = "st,stmpe801", .data = &stmpe_i2c_id[1], },
+ { .compatible = "st,stmpe811", .data = &stmpe_i2c_id[2], },
+ { .compatible = "st,stmpe1601", .data = &stmpe_i2c_id[3], },
+ { .compatible = "st,stmpe2401", .data = &stmpe_i2c_id[4], },
+ { .compatible = "st,stmpe2403", .data = &stmpe_i2c_id[5], },
+ { }
+};
+MODULE_DEVICE_TABLE(of, stmpe_dt_ids);
+#endif
+
static struct i2c_driver stmpe_i2c_driver = {
.driver = {
.name = "stmpe-i2c",
@@ -88,6 +102,7 @@ static struct i2c_driver stmpe_i2c_driver = {
#ifdef CONFIG_PM
.pm = &stmpe_dev_pm_ops,
#endif
+ .of_match_table = of_match_ptr(stmpe_dt_ids),
},
.probe = stmpe_i2c_probe,
.remove = __devexit_p(stmpe_i2c_remove),
diff --git a/drivers/mfd/stmpe-spi.c b/drivers/mfd/stmpe-spi.c
index 9edfe86..1e2bff0 100644
--- a/drivers/mfd/stmpe-spi.c
+++ b/drivers/mfd/stmpe-spi.c
@@ -11,6 +11,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/types.h>
#include "stmpe.h"
@@ -119,6 +120,19 @@ static const struct spi_device_id stmpe_spi_id[] = {
};
MODULE_DEVICE_TABLE(spi, stmpe_id);
+#ifdef CONFIG_OF
+static const struct of_device_id stmpe_dt_ids[] = {
+ { .compatible = "st,stmpe610", .data = (void *)STMPE610, },
+ { .compatible = "st,stmpe801", .data = (void *)STMPE801, },
+ { .compatible = "st,stmpe811", .data = (void *)STMPE811, },
+ { .compatible = "st,stmpe1601", .data = (void *)STMPE1601, },
+ { .compatible = "st,stmpe2401", .data = (void *)STMPE2401, },
+ { .compatible = "st,stmpe2403", .data = (void *)STMPE2403, },
+ { }
+};
+MODULE_DEVICE_TABLE(of, stmpe_dt_ids);
+#endif
+
static struct spi_driver stmpe_spi_driver = {
.driver = {
.name = "stmpe-spi",
@@ -126,6 +140,7 @@ static struct spi_driver stmpe_spi_driver = {
#ifdef CONFIG_PM
.pm = &stmpe_dev_pm_ops,
#endif
+ .of_match_table = of_match_ptr(stmpe_dt_ids),
},
.probe = stmpe_spi_probe,
.remove = __devexit_p(stmpe_spi_remove),
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 34408b4..bb2dfdb 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -7,12 +7,15 @@
* Author: Rabin Vincent <rabin.vincent@xxxxxxxxxxxxxx> for ST-Ericsson
*/
+#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/mfd/core.h>
@@ -1019,6 +1022,14 @@ void __devinit stmpe_of_probe(struct stmpe_platform_data *pdata,
{
struct device_node *child;
+ /*
+ * Distinct names of same cell-type within multiple instances of stmpe
+ * will be guaranteed by DT.
+ */
+ pdata->id = -1;
+
+ pdata->irq_trigger = IRQF_TRIGGER_NONE;
+
of_property_read_u32(np, "st,autosleep-timeout",
&pdata->autosleep_timeout);
@@ -1027,15 +1038,16 @@ void __devinit stmpe_of_probe(struct stmpe_platform_data *pdata,
for_each_child_of_node(np, child) {
if (!strcmp(child->name, "stmpe_gpio")) {
pdata->blocks |= STMPE_BLOCK_GPIO;
- }
- if (!strcmp(child->name, "stmpe_keypad")) {
+ } else if (!strcmp(child->name, "stmpe_keypad")) {
pdata->blocks |= STMPE_BLOCK_KEYPAD;
- }
- if (!strcmp(child->name, "stmpe_touchscreen")) {
+ } else if (!strcmp(child->name, "stmpe_touchscreen")) {
pdata->blocks |= STMPE_BLOCK_TOUCHSCREEN;
- }
- if (!strcmp(child->name, "stmpe_adc")) {
+ } else if (!strcmp(child->name, "stmpe_adc")) {
pdata->blocks |= STMPE_BLOCK_ADC;
+ } else if (!strcmp(child->name, "stmpe_pwm")) {
+ pdata->blocks |= STMPE_BLOCK_PWM;
+ } else if (!strcmp(child->name, "stmpe_rotator")) {
+ pdata->blocks |= STMPE_BLOCK_ROTATOR;
}
}
}
@@ -1106,6 +1118,9 @@ int __devinit stmpe_probe(struct stmpe_client_info *ci, int partnum)
return -ENODEV;
}
stmpe->variant = stmpe_noirq_variant_info[stmpe->partnum];
+ } else if (pdata->irq_trigger == IRQF_TRIGGER_NONE) {
+ pdata->irq_trigger =
+ irqd_get_trigger_type(irq_get_irq_data(stmpe->irq));
}
ret = stmpe_chip_init(stmpe);
--
1.7.12.rc2.18.g61b472e
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