>From b8d3ab594008dd2714d4dedf12348d05c08a48fd Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut@xxxxxxxxx>
Date: Sun, 8 Nov 2009 02:51:55 +0100
Subject: [PATCH] UCB1400: Allow passing IRQ through platfrom_data
This patch allows UCB1400 to get IRQ GPIO from platform data. In case
platform_data are not supplied or the IRQ set in the platform_data is lower than
zero, fall back to the old IRQ detection algorithm.
Signed-off-by: Marek Vasut <marek.vasut@xxxxxxxxx>
---
drivers/input/touchscreen/ucb1400_ts.c | 11 +++++++----
drivers/mfd/ucb1400_core.c | 7 +++++++
include/linux/ucb1400.h | 4 ++++
3 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/input/touchscreen/ucb1400_ts.c
b/drivers/input/touchscreen/ucb1400_ts.c
index 095f84b..89dcbe7 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -355,10 +355,13 @@ static int ucb1400_ts_probe(struct platform_device *dev)
goto err;
}
- error = ucb1400_ts_detect_irq(ucb);
- if (error) {
- printk(KERN_ERR "UCB1400: IRQ probe failed\n");
- goto err_free_devs;
+ /* Only in case the IRQ line wasn't supplied, try detecting it */
+ if (ucb->irq < 0) {
+ error = ucb1400_ts_detect_irq(ucb);
+ if (error) {
+ printk(KERN_ERR "UCB1400: IRQ probe failed\n");
+ goto err_free_devs;
+ }
}
init_waitqueue_head(&ucb->ts_wait);
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c
index fa294b6..85fd942 100644
--- a/drivers/mfd/ucb1400_core.c
+++ b/drivers/mfd/ucb1400_core.c
@@ -51,6 +51,7 @@ static int ucb1400_core_probe(struct device *dev)
struct ucb1400_ts ucb_ts;
struct ucb1400_gpio ucb_gpio;
struct snd_ac97 *ac97;
+ struct ucb1400_pdata *pdata = dev->platform_data;
memset(&ucb_ts, 0, sizeof(ucb_ts));
memset(&ucb_gpio, 0, sizeof(ucb_gpio));
@@ -88,6 +89,12 @@ static int ucb1400_core_probe(struct device *dev)
/* TOUCHSCREEN */
ucb_ts.ac97 = ac97;
+
+ if (pdata != NULL && pdata->irq >= 0)
+ ucb_ts.irq = pdata->irq;
+ else
+ ucb_ts.irq = -1;
+
ucb->ucb1400_ts = platform_device_alloc("ucb1400_ts", -1);
if (!ucb->ucb1400_ts) {
err = -ENOMEM;
diff --git a/include/linux/ucb1400.h b/include/linux/ucb1400.h
index adb4406..1b47909 100644
--- a/include/linux/ucb1400.h
+++ b/include/linux/ucb1400.h
@@ -110,6 +110,10 @@ struct ucb1400 {
struct platform_device *ucb1400_gpio;
};
+struct ucb1400_pdata {
+ int irq;
+};
+
static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
{
return ac97->bus->ops->read(ac97, reg);
--
1.6.5
--
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