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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2012-05-16 14:11:58 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2012-05-20 17:27:12 +0200
commit37e13cecaa141eccce705843f5d2f7509e29bd3a (patch)
tree6f0b138f14c86ac5851b97fc3acd59c7a736ca5e /drivers/mfd
parent1f01d60e4c0cae3416071680635f227df0020dd8 (diff)
downloadlinux-37e13cecaa141eccce705843f5d2f7509e29bd3a.tar.bz2
mfd: Add support for Device Tree to twl6040
Device tree based probing support for the core twl6040 driver. Child devices will be created as MFD devices: - ASoC codec is always created - Vibra child is only created if the vibra section present in the DT blob. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/twl6040-core.c27
-rw-r--r--drivers/mfd/twl6040-irq.c6
2 files changed, 25 insertions, 8 deletions
diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c
index 9765dc2b0ca3..450a28fe8fc2 100644
--- a/drivers/mfd/twl6040-core.c
+++ b/drivers/mfd/twl6040-core.c
@@ -29,6 +29,10 @@
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
+#include <linux/of_platform.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/i2c.h>
@@ -505,11 +509,12 @@ static int __devinit twl6040_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct twl6040_platform_data *pdata = client->dev.platform_data;
+ struct device_node *node = client->dev.of_node;
struct twl6040 *twl6040;
struct mfd_cell *cell = NULL;
int irq, ret, children = 0;
- if (!pdata) {
+ if (!pdata && !node) {
dev_err(&client->dev, "Platform data is missing\n");
return -EINVAL;
}
@@ -560,9 +565,13 @@ static int __devinit twl6040_probe(struct i2c_client *client,
twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV);
/* ERRATA: Automatic power-up is not possible in ES1.0 */
- if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0)
- twl6040->audpwron = pdata->audpwron_gpio;
- else
+ if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) {
+ if (pdata)
+ twl6040->audpwron = pdata->audpwron_gpio;
+ else
+ twl6040->audpwron = of_get_named_gpio(node,
+ "ti,audpwron-gpio", 0);
+ } else
twl6040->audpwron = -EINVAL;
if (gpio_is_valid(twl6040->audpwron)) {
@@ -602,13 +611,13 @@ static int __devinit twl6040_probe(struct i2c_client *client,
twl6040_codec_rsrc[0].end = irq;
cell->resources = twl6040_codec_rsrc;
cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc);
- if (pdata->codec) {
+ if (pdata && pdata->codec) {
cell->platform_data = pdata->codec;
cell->pdata_size = sizeof(*pdata->codec);
}
children++;
- if (pdata->vibra) {
+ if ((pdata && pdata->vibra) || of_find_node_by_name(node, "vibra")) {
irq = twl6040->irq_base + TWL6040_IRQ_VIB;
cell = &twl6040->cells[children];
@@ -618,8 +627,10 @@ static int __devinit twl6040_probe(struct i2c_client *client,
cell->resources = twl6040_vibra_rsrc;
cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc);
- cell->platform_data = pdata->vibra;
- cell->pdata_size = sizeof(*pdata->vibra);
+ if (pdata && pdata->vibra) {
+ cell->platform_data = pdata->vibra;
+ cell->pdata_size = sizeof(*pdata->vibra);
+ }
children++;
}
diff --git a/drivers/mfd/twl6040-irq.c b/drivers/mfd/twl6040-irq.c
index 914978e1b62e..4b42543da228 100644
--- a/drivers/mfd/twl6040-irq.c
+++ b/drivers/mfd/twl6040-irq.c
@@ -25,6 +25,8 @@
#include <linux/module.h>
#include <linux/err.h>
#include <linux/irq.h>
+#include <linux/of.h>
+#include <linux/irqdomain.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/mfd/twl6040.h>
@@ -139,6 +141,7 @@ static irqreturn_t twl6040_irq_thread(int irq, void *data)
int twl6040_irq_init(struct twl6040 *twl6040)
{
+ struct device_node *node = twl6040->dev->of_node;
int i, nr_irqs, irq_base, ret;
u8 val;
@@ -158,6 +161,9 @@ int twl6040_irq_init(struct twl6040 *twl6040)
}
twl6040->irq_base = irq_base;
+ irq_domain_add_legacy(node, ARRAY_SIZE(twl6040_irqs), irq_base, 0,
+ &irq_domain_simple_ops, NULL);
+
/* Register them with genirq */
for (i = irq_base; i < irq_base + nr_irqs; i++) {
irq_set_chip_data(i, twl6040);