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Date: Fri, 11 Sep 2009 23:27:52 +0200
From: Pavel Machek <pavel@....cz>
To: Randy Dunlap <randy.dunlap@...cle.com>, Greg KH <greg@...ah.com>
Cc: arve@...roid.com, swetland@...gle.com,
kernel list <linux-kernel@...r.kernel.org>
Subject: [patch] Re: newer version of HTC Dream support
> > > Can you do b. (boot) without a. (compile)?
> >
> > Well, hardly, but I can do a) without b), and it is very much
> > easier. So... which is it?
>
> I'm only targeting compile/build.
Ok, I guess I should appologize for testing patch in wrong
configuration. This should fix it:
---
Fix compilation of gpio_* input drivers on -next kernel. Adds needed
headers and removes unprotected wakelock/earlysuspend dependencies.
Signed-off-by: Pavel Machek <pavel@....cz>
diff --git a/drivers/staging/dream/gpio_event.c b/drivers/staging/dream/gpio_event.c
index 8b64c1e..e60e2c0 100644
--- a/drivers/staging/dream/gpio_event.c
+++ b/drivers/staging/dream/gpio_event.c
@@ -13,7 +13,7 @@
*
*/
-#include <linux/earlysuspend.h>
+
#include <linux/module.h>
#include <linux/input.h>
#include <linux/gpio_event.h>
@@ -23,7 +23,6 @@
struct gpio_event {
struct input_dev *input_dev;
const struct gpio_event_platform_data *info;
- struct early_suspend early_suspend;
void *state[0];
};
diff --git a/drivers/staging/dream/gpio_input.c b/drivers/staging/dream/gpio_input.c
index 7e307f2..0638ec4 100644
--- a/drivers/staging/dream/gpio_input.c
+++ b/drivers/staging/dream/gpio_input.c
@@ -19,7 +19,6 @@
#include <linux/hrtimer.h>
#include <linux/input.h>
#include <linux/interrupt.h>
-#include <linux/wakelock.h>
enum {
DEBOUNCE_UNSTABLE = BIT(0), /* Got irq, while debouncing */
@@ -44,7 +43,6 @@ struct gpio_input_state {
int use_irq;
int debounce_count;
spinlock_t irq_lock;
- struct wake_lock wake_lock;
struct gpio_key_state key_state[0];
};
@@ -143,8 +141,6 @@ static enum hrtimer_restart gpio_event_input_timer_func(struct hrtimer *timer)
hrtimer_start(timer, ds->info->debounce_time, HRTIMER_MODE_REL);
else if (!ds->use_irq)
hrtimer_start(timer, ds->info->poll_time, HRTIMER_MODE_REL);
- else
- wake_unlock(&ds->wake_lock);
spin_unlock_irqrestore(&ds->irq_lock, irqflags);
@@ -170,7 +166,6 @@ static irqreturn_t gpio_event_input_irq_handler(int irq, void *dev_id)
if (ks->debounce & DEBOUNCE_WAIT_IRQ) {
ks->debounce = DEBOUNCE_UNKNOWN;
if (ds->debounce_count++ == 0) {
- wake_lock(&ds->wake_lock);
hrtimer_start(
&ds->timer, ds->info->debounce_time,
HRTIMER_MODE_REL);
@@ -277,7 +272,6 @@ int gpio_event_input_func(struct input_dev *input_dev,
ds->debounce_count = di->keymap_size;
ds->input_dev = input_dev;
ds->info = di;
- wake_lock_init(&ds->wake_lock, WAKE_LOCK_SUSPEND, "gpio_input");
spin_lock_init(&ds->irq_lock);
for (i = 0; i < di->keymap_size; i++) {
@@ -336,7 +330,6 @@ err_gpio_configure_failed:
err_gpio_request_failed:
;
}
- wake_lock_destroy(&ds->wake_lock);
kfree(ds);
err_ds_alloc_failed:
return ret;
diff --git a/drivers/staging/dream/gpio_matrix.c b/drivers/staging/dream/gpio_matrix.c
index c1f4765..796de4f 100644
--- a/drivers/staging/dream/gpio_matrix.c
+++ b/drivers/staging/dream/gpio_matrix.c
@@ -18,13 +18,11 @@
#include <linux/gpio_event.h>
#include <linux/hrtimer.h>
#include <linux/interrupt.h>
-#include <linux/wakelock.h>
struct gpio_kp {
struct input_dev *input_dev;
struct gpio_event_matrix_info *keypad_info;
struct hrtimer timer;
- struct wake_lock wake_lock;
int current_output;
unsigned int use_irq:1;
unsigned int key_state_changed:1;
@@ -199,7 +197,6 @@ static enum hrtimer_restart gpio_keypad_timer_func(struct hrtimer *timer)
}
for (in = 0; in < mi->ninputs; in++)
enable_irq(gpio_to_irq(mi->input_gpios[in]));
- wake_unlock(&kp->wake_lock);
return HRTIMER_NORESTART;
}
@@ -222,7 +219,6 @@ static irqreturn_t gpio_keypad_irq_handler(int irq_in, void *dev_id)
else
gpio_direction_input(mi->output_gpios[i]);
}
- wake_lock(&kp->wake_lock);
hrtimer_start(&kp->timer, ktime_set(0, 0), HRTIMER_MODE_REL);
return IRQ_HANDLED;
}
@@ -363,7 +359,6 @@ int gpio_event_matrix_func(struct input_dev *input_dev,
hrtimer_init(&kp->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
kp->timer.function = gpio_keypad_timer_func;
- wake_lock_init(&kp->wake_lock, WAKE_LOCK_SUSPEND, "gpio_kp");
err = gpio_keypad_request_irqs(kp);
kp->use_irq = err == 0;
@@ -371,8 +366,6 @@ int gpio_event_matrix_func(struct input_dev *input_dev,
"in %s mode\n", input_dev->name,
kp->use_irq ? "interrupt" : "polling");
- if (kp->use_irq)
- wake_lock(&kp->wake_lock);
hrtimer_start(&kp->timer, ktime_set(0, 0), HRTIMER_MODE_REL);
return 0;
@@ -386,7 +379,6 @@ int gpio_event_matrix_func(struct input_dev *input_dev,
free_irq(gpio_to_irq(mi->input_gpios[i]), kp);
hrtimer_cancel(&kp->timer);
- wake_lock_destroy(&kp->wake_lock);
for (i = mi->noutputs - 1; i >= 0; i--) {
err_gpio_direction_input_failed:
gpio_free(mi->input_gpios[i]);
diff --git a/include/linux/gpio_event.h b/include/linux/gpio_event.h
new file mode 100644
index 0000000..5ff828b
--- /dev/null
+++ b/include/linux/gpio_event.h
@@ -0,0 +1,154 @@
+/* include/linux/gpio_event.h
+ *
+ * Copyright (C) 2007 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _LINUX_GPIO_EVENT_H
+#define _LINUX_GPIO_EVENT_H
+
+#include <linux/input.h>
+
+enum {
+ GPIO_EVENT_FUNC_UNINIT = 0x0,
+ GPIO_EVENT_FUNC_INIT = 0x1,
+ GPIO_EVENT_FUNC_SUSPEND = 0x2,
+ GPIO_EVENT_FUNC_RESUME = 0x3,
+};
+struct gpio_event_info {
+ int (*func)(struct input_dev *input_dev,
+ struct gpio_event_info *info,
+ void **data, int func);
+ int (*event)(struct input_dev *input_dev,
+ struct gpio_event_info *info,
+ void **data, unsigned int type,
+ unsigned int code, int value); /* out events */
+};
+
+struct gpio_event_platform_data {
+ const char *name;
+ struct gpio_event_info **info;
+ size_t info_count;
+ int (*power)(const struct gpio_event_platform_data *pdata, bool on);
+};
+
+#define GPIO_EVENT_DEV_NAME "gpio-event"
+
+/* Key matrix */
+
+enum gpio_event_matrix_flags {
+ /* unset: drive active output low, set: drive active output high */
+ GPIOKPF_ACTIVE_HIGH = 1U << 0,
+ GPIOKPF_DEBOUNCE = 1U << 1,
+ GPIOKPF_REMOVE_SOME_PHANTOM_KEYS = 1U << 2,
+ GPIOKPF_REMOVE_PHANTOM_KEYS = GPIOKPF_REMOVE_SOME_PHANTOM_KEYS |
+ GPIOKPF_DEBOUNCE,
+ GPIOKPF_DRIVE_INACTIVE = 1U << 3,
+ GPIOKPF_LEVEL_TRIGGERED_IRQ = 1U << 4,
+ GPIOKPF_PRINT_UNMAPPED_KEYS = 1U << 16,
+ GPIOKPF_PRINT_MAPPED_KEYS = 1U << 17,
+ GPIOKPF_PRINT_PHANTOM_KEYS = 1U << 18,
+};
+
+extern int gpio_event_matrix_func(struct input_dev *input_dev,
+ struct gpio_event_info *info, void **data, int func);
+struct gpio_event_matrix_info {
+ /* initialize to gpio_event_matrix_func */
+ struct gpio_event_info info;
+ /* size must be ninputs * noutputs */
+ const unsigned short *keymap;
+ unsigned int *input_gpios;
+ unsigned int *output_gpios;
+ unsigned int ninputs;
+ unsigned int noutputs;
+ /* time to wait before reading inputs after driving each output */
+ ktime_t settle_time;
+ /* time to wait before scanning the keypad a second time */
+ ktime_t debounce_delay;
+ ktime_t poll_time;
+ unsigned flags;
+};
+
+/* Directly connected inputs and outputs */
+
+enum gpio_event_direct_flags {
+ GPIOEDF_ACTIVE_HIGH = 1U << 0,
+/* GPIOEDF_USE_DOWN_IRQ = 1U << 1, */
+/* GPIOEDF_USE_IRQ = (1U << 2) | GPIOIDF_USE_DOWN_IRQ, */
+ GPIOEDF_PRINT_KEYS = 1U << 8,
+ GPIOEDF_PRINT_KEY_DEBOUNCE = 1U << 9,
+};
+
+struct gpio_event_direct_entry {
+ uint32_t gpio:23;
+ uint32_t code:9;
+};
+
+/* inputs */
+extern int gpio_event_input_func(struct input_dev *input_dev,
+ struct gpio_event_info *info, void **data, int func);
+struct gpio_event_input_info {
+ /* initialize to gpio_event_input_func */
+ struct gpio_event_info info;
+ ktime_t debounce_time;
+ ktime_t poll_time;
+ uint16_t flags;
+ uint16_t type;
+ const struct gpio_event_direct_entry *keymap;
+ size_t keymap_size;
+};
+
+/* outputs */
+extern int gpio_event_output_func(struct input_dev *input_dev,
+ struct gpio_event_info *info, void **data, int func);
+extern int gpio_event_output_event(struct input_dev *input_dev,
+ struct gpio_event_info *info, void **data,
+ unsigned int type, unsigned int code, int value);
+struct gpio_event_output_info {
+ /* initialize to gpio_event_output_func and gpio_event_output_event */
+ struct gpio_event_info info;
+ uint16_t flags;
+ uint16_t type;
+ const struct gpio_event_direct_entry *keymap;
+ size_t keymap_size;
+};
+
+
+/* axes */
+
+enum gpio_event_axis_flags {
+ GPIOEAF_PRINT_UNKNOWN_DIRECTION = 1U << 16,
+ GPIOEAF_PRINT_RAW = 1U << 17,
+ GPIOEAF_PRINT_EVENT = 1U << 18,
+};
+
+extern int gpio_event_axis_func(struct input_dev *input_dev,
+ struct gpio_event_info *info, void **data, int func);
+struct gpio_event_axis_info {
+ /* initialize to gpio_event_axis_func */
+ struct gpio_event_info info;
+ uint8_t count;
+ uint8_t type; /* EV_REL or EV_ABS */
+ uint16_t code;
+ uint16_t decoded_size;
+ uint16_t (*map)(struct gpio_event_axis_info *info, uint16_t in);
+ uint32_t *gpio;
+ uint32_t flags;
+};
+#define gpio_axis_2bit_gray_map gpio_axis_4bit_gray_map
+#define gpio_axis_3bit_gray_map gpio_axis_4bit_gray_map
+uint16_t gpio_axis_4bit_gray_map(
+ struct gpio_event_axis_info *info, uint16_t in);
+uint16_t gpio_axis_5bit_singletrack_map(
+ struct gpio_event_axis_info *info, uint16_t in);
+
+#endif
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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