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Date: Wed, 3 Oct 2012 14:06:59 -0300
From: Fabio Estevam <festevam@...il.com>
To: sameo@...ux.intel.com
Cc: broonie@...nsource.wolfsonmicro.com, ashish.jangam@...tcummins.com,
dchen@...semi.com, arnd@...db.de, kernel@...gutronix.de,
dmitry.torokhov@...il.com, linux-kernel@...r.kernel.org,
Fabio Estevam <fabio.estevam@...escale.com>
Subject: [RFC 3/3] Input: da9052_tsi.c: Use the new da9052 irq functions
From: Fabio Estevam <fabio.estevam@...escale.com>
Currently da9062_tsi does not probe and it fails as follows:
da9052 1-0048: Unable to determine device interrupts
Use the new da9052 irq functions and allow the driver to probe successfully.
Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>
---
Hi,
Even though I can get the da9052_tsi driver to probe succesffully on a mx53qsb,
I still do not get any interrupts when touching the LCD when using "evtest".
This is why I marked the series as RFC.
Ashish,
I never used this driver before, so I do not know if it has ever worked.
Please let me know if you have suggestions to make this drive functional.
drivers/input/touchscreen/da9052_tsi.c | 60 +++++++++++---------------------
drivers/mfd/da9052-irq.c | 38 +++++++++++++++++++-
include/linux/mfd/da9052/da9052.h | 4 +++
3 files changed, 62 insertions(+), 40 deletions(-)
diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c
index e8df341..5bf1026 100644
--- a/drivers/input/touchscreen/da9052_tsi.c
+++ b/drivers/input/touchscreen/da9052_tsi.c
@@ -27,8 +27,6 @@ struct da9052_tsi {
struct input_dev *dev;
struct delayed_work ts_pen_work;
struct mutex mutex;
- unsigned int irq_pendwn;
- unsigned int irq_datardy;
bool stopped;
bool adc_on;
};
@@ -45,8 +43,8 @@ static irqreturn_t da9052_ts_pendwn_irq(int irq, void *data)
if (!tsi->stopped) {
/* Mask PEN_DOWN event and unmask TSI_READY event */
- disable_irq_nosync(tsi->irq_pendwn);
- enable_irq(tsi->irq_datardy);
+ da9052_disable_irq_nosync(tsi->da9052, DA9052_IRQ_PENDOWN);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
da9052_ts_adc_toggle(tsi, true);
@@ -137,8 +135,8 @@ static void da9052_ts_pen_work(struct work_struct *work)
return;
/* Mask TSI_READY event and unmask PEN_DOWN event */
- disable_irq(tsi->irq_datardy);
- enable_irq(tsi->irq_pendwn);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
}
}
}
@@ -197,7 +195,7 @@ static int da9052_ts_input_open(struct input_dev *input_dev)
mb();
/* Unmask PEN_DOWN event */
- enable_irq(tsi->irq_pendwn);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
/* Enable Pen Detect Circuit */
return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG,
@@ -210,11 +208,11 @@ static void da9052_ts_input_close(struct input_dev *input_dev)
tsi->stopped = true;
mb();
- disable_irq(tsi->irq_pendwn);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
cancel_delayed_work_sync(&tsi->ts_pen_work);
if (tsi->adc_on) {
- disable_irq(tsi->irq_datardy);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
da9052_ts_adc_toggle(tsi, false);
/*
@@ -222,7 +220,7 @@ static void da9052_ts_input_close(struct input_dev *input_dev)
* twice and we need to enable it to keep enable/disable
* counter balanced. IRQ is still off though.
*/
- enable_irq(tsi->irq_pendwn);
+ da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
}
/* Disable Pen Detect Circuit */
@@ -234,21 +232,12 @@ static int __devinit da9052_ts_probe(struct platform_device *pdev)
struct da9052 *da9052;
struct da9052_tsi *tsi;
struct input_dev *input_dev;
- int irq_pendwn;
- int irq_datardy;
int error;
da9052 = dev_get_drvdata(pdev->dev.parent);
if (!da9052)
return -EINVAL;
- irq_pendwn = platform_get_irq_byname(pdev, "PENDWN");
- irq_datardy = platform_get_irq_byname(pdev, "TSIRDY");
- if (irq_pendwn < 0 || irq_datardy < 0) {
- dev_err(da9052->dev, "Unable to determine device interrupts\n");
- return -ENXIO;
- }
-
tsi = kzalloc(sizeof(struct da9052_tsi), GFP_KERNEL);
input_dev = input_allocate_device();
if (!tsi || !input_dev) {
@@ -258,8 +247,6 @@ static int __devinit da9052_ts_probe(struct platform_device *pdev)
tsi->da9052 = da9052;
tsi->dev = input_dev;
- tsi->irq_pendwn = da9052->irq_base + irq_pendwn;
- tsi->irq_datardy = da9052->irq_base + irq_datardy;
tsi->stopped = true;
INIT_DELAYED_WORK(&tsi->ts_pen_work, da9052_ts_pen_work);
@@ -287,31 +274,25 @@ static int __devinit da9052_ts_probe(struct platform_device *pdev)
/* Disable ADC */
da9052_ts_adc_toggle(tsi, false);
- error = request_threaded_irq(tsi->irq_pendwn,
- NULL, da9052_ts_pendwn_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "PENDWN", tsi);
+ error = da9052_request_irq(tsi->da9052, DA9052_IRQ_PENDOWN, "pendown-irq",
+ da9052_ts_pendwn_irq, da9052);
if (error) {
dev_err(tsi->da9052->dev,
- "Failed to register PENDWN IRQ %d, error = %d\n",
- tsi->irq_pendwn, error);
+ "Failed to register PENDWN IRQ: %d\n", error);
goto err_free_mem;
}
- error = request_threaded_irq(tsi->irq_datardy,
- NULL, da9052_ts_datardy_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "TSIRDY", tsi);
+ error = da9052_request_irq(tsi->da9052, DA9052_IRQ_TSIREADY, "tsiready-irq",
+ da9052_ts_datardy_irq, da9052);
if (error) {
dev_err(tsi->da9052->dev,
- "Failed to register TSIRDY IRQ %d, error = %d\n",
- tsi->irq_datardy, error);
+ "Failed to register TSIRDY IRQ :%d\n", error);
goto err_free_pendwn_irq;
}
/* Mask PEN_DOWN and TSI_READY events */
- disable_irq(tsi->irq_pendwn);
- disable_irq(tsi->irq_datardy);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN);
+ da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY);
error = da9052_configure_tsi(tsi);
if (error)
@@ -326,9 +307,9 @@ static int __devinit da9052_ts_probe(struct platform_device *pdev)
return 0;
err_free_datardy_irq:
- free_irq(tsi->irq_datardy, tsi);
+ da9052_free_irq(da9052, DA9052_IRQ_TSIREADY, da9052);
err_free_pendwn_irq:
- free_irq(tsi->irq_pendwn, tsi);
+ da9052_free_irq(da9052, DA9052_IRQ_PENDOWN, da9052);
err_free_mem:
kfree(tsi);
input_free_device(input_dev);
@@ -339,11 +320,12 @@ err_free_mem:
static int __devexit da9052_ts_remove(struct platform_device *pdev)
{
struct da9052_tsi *tsi = platform_get_drvdata(pdev);
+ struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent);
da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x19);
- free_irq(tsi->irq_pendwn, tsi);
- free_irq(tsi->irq_datardy, tsi);
+ da9052_free_irq(da9052, DA9052_IRQ_TSIREADY, da9052);
+ da9052_free_irq(da9052, DA9052_IRQ_PENDOWN, da9052);
input_unregister_device(tsi->dev);
kfree(tsi);
diff --git a/drivers/mfd/da9052-irq.c b/drivers/mfd/da9052-irq.c
index e5a14cf..c47b92f 100644
--- a/drivers/mfd/da9052-irq.c
+++ b/drivers/mfd/da9052-irq.c
@@ -196,7 +196,7 @@ static int da9052_irq_map(struct irq_domain *h, unsigned int virq,
struct regmap_irq_chip_data *data = h->host_data;
irq_set_chip_data(virq, data);
- irq_set_chip_and_handler(virq, &da9052_irq_chip, handle_edge_irq);
+ irq_set_chip_and_handler(virq, &da9052_irq_chip, handle_level_irq);
irq_set_nested_thread(virq, 1);
/*
@@ -222,6 +222,42 @@ static int da9052_map_irq(struct da9052 *da9052, int irq)
return regmap_irq_get_virq(da9052->irq_data, irq);
}
+int da9052_enable_irq(struct da9052 *da9052, int irq)
+{
+ irq = da9052_map_irq(da9052, irq);
+ if (irq < 0)
+ return irq;
+
+ enable_irq(irq);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(da9052_enable_irq);
+
+int da9052_disable_irq(struct da9052 *da9052, int irq)
+{
+ irq = da9052_map_irq(da9052, irq);
+ if (irq < 0)
+ return irq;
+
+ disable_irq(irq);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(da9052_disable_irq);
+
+int da9052_disable_irq_nosync(struct da9052 *da9052, int irq)
+{
+ irq = da9052_map_irq(da9052, irq);
+ if (irq < 0)
+ return irq;
+
+ disable_irq_nosync(irq);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(da9052_disable_irq_nosync);
+
int da9052_request_irq(struct da9052 *da9052, int irq, char *name,
irq_handler_t handler, void *data)
{
diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h
index 5deb64c..484301a 100644
--- a/include/linux/mfd/da9052/da9052.h
+++ b/include/linux/mfd/da9052/da9052.h
@@ -153,4 +153,8 @@ int da9052_request_irq(struct da9052 *da9052, int irq, char *name,
irq_handler_t handler, void *data);
void da9052_free_irq(struct da9052 *da9052, int irq, void *data);
+int da9052_enable_irq(struct da9052 *da9052, int irq);
+int da9052_disable_irq(struct da9052 *da9052, int irq);
+int da9052_disable_irq_nosync(struct da9052 *da9052, int irq);
+
#endif /* __MFD_DA9052_DA9052_H */
--
1.7.9.5
--
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