* [PATCH 2/2] asus-laptop: Support pega_accel driver
2011-01-14 20:14 ` [PATCH 1/2] input: Pegatron Lucid accelerometer Andy Ross
@ 2011-01-14 20:14 ` Andy Ross
2011-01-15 16:22 ` [PATCH 1/2] input: Pegatron Lucid accelerometer Corentin Chary
2011-01-15 22:16 ` Dmitry Torokhov
2 siblings, 0 replies; 5+ messages in thread
From: Andy Ross @ 2011-01-14 20:14 UTC (permalink / raw)
To: Dmitry Torokhov, Corentin Chary, linux-input, acpi4asus-user,
platform-driver-x86
From: Andy Ross <andy.ross@windriver.com>
Add device detection for the ACPI accelerometer interface on Pegatron
Lucid tablets.
Signed-off-by: Andy Ross <andy.ross@windriver.com>
---
drivers/platform/x86/asus-laptop.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index d235f44..4a6d647 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -4,6 +4,7 @@
*
* Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
* Copyright (C) 2006-2007 Corentin Chary
+ * Copyright (C) 2011 Wind River Systems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -31,6 +32,7 @@
* Josh Green - Light Sens support
* Thomas Tuttle - His first patch for led support was very helpfull
* Sam Lin - GPS support
+ * Andy Ross - Pegatron Lucid accelerometer
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -246,6 +248,7 @@ struct asus_laptop {
int wireless_status;
bool have_rsts;
+ bool have_pega_accel;
int lcd_state;
struct rfkill *gps_rfkill;
@@ -1352,6 +1355,7 @@ static const struct attribute_group asus_attr_group = {
.attrs = asus_attributes,
};
+
static int asus_platform_init(struct asus_laptop *asus)
{
int result;
@@ -1556,6 +1560,24 @@ static int __devinit asus_acpi_init(struct asus_laptop *asus)
return result;
}
+static struct platform_device pega_accel_dev = {
+ .name = "pega_accel",
+ .id = -1,
+};
+
+static void __devinit asus_pega_accel_init(struct asus_laptop *asus)
+{
+ /* Pegatron Lucid tablets expose their accelerometer through ACPI.
+ * Check for XLR{X,Y,Z} methods */
+ if (acpi_check_handle(asus->handle, "XLRX", NULL) ||
+ acpi_check_handle(asus->handle, "XLRY", NULL) ||
+ acpi_check_handle(asus->handle, "XLRZ", NULL))
+ return;
+
+ if (!platform_device_register(&pega_accel_dev))
+ asus->have_pega_accel = true;
+}
+
static bool asus_device_present;
static int __devinit asus_acpi_add(struct acpi_device *device)
@@ -1605,6 +1627,8 @@ static int __devinit asus_acpi_add(struct acpi_device *device)
if (result)
goto fail_rfkill;
+ asus_pega_accel_init(asus);
+
asus_device_present = true;
return 0;
@@ -1627,6 +1651,9 @@ static int asus_acpi_remove(struct acpi_device *device, int type)
{
struct asus_laptop *asus = acpi_driver_data(device);
+ if (asus->have_pega_accel)
+ platform_device_unregister(&pega_accel_dev);
+
asus_backlight_exit(asus);
asus_rfkill_exit(asus);
asus_led_exit(asus);
--
1.7.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH 1/2] input: Pegatron Lucid accelerometer
2011-01-14 20:14 ` [PATCH 1/2] input: Pegatron Lucid accelerometer Andy Ross
2011-01-14 20:14 ` [PATCH 2/2] asus-laptop: Support pega_accel driver Andy Ross
@ 2011-01-15 16:22 ` Corentin Chary
2011-01-15 22:16 ` Dmitry Torokhov
2 siblings, 0 replies; 5+ messages in thread
From: Corentin Chary @ 2011-01-15 16:22 UTC (permalink / raw)
To: Andy Ross
Cc: Dmitry Torokhov, linux-input, acpi4asus-user, platform-driver-x86
On Fri, Jan 14, 2011 at 9:14 PM, Andy Ross <andy@windriver.com> wrote:
> From: Andy Ross <andy.ross@windriver.com>
>
> Add driver for the ACPI accelerometer interface on the Pegatron Lucid
> tablet.
>
> Signed-off-by: Andy Ross <andy.ross@windriver.com>
> ---
> drivers/input/misc/Kconfig | 11 +++
> drivers/input/misc/Makefile | 2 +-
> drivers/input/misc/pega-accel.c | 133 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 145 insertions(+), 1 deletions(-)
> create mode 100644 drivers/input/misc/pega-accel.c
>
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index b99b8cb..268c11d 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -448,4 +448,15 @@ config INPUT_ADXL34X_SPI
> To compile this driver as a module, choose M here: the
> module will be called adxl34x-spi.
>
> +config INPUT_PEGA_ACCEL
> + tristate "Support Pegatron Lucid accelerometer"
> + depends on ASUS_LAPTOP
> + default y
> + help
> + Say Y here if you want support for the built-in ACPI
> + accelerometer device on Pegatron Lucid tablet devices.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called pega_accel.
> +
> endif
> diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
> index 1fe1f6c..2475305 100644
> --- a/drivers/input/misc/Makefile
> +++ b/drivers/input/misc/Makefile
> @@ -42,4 +42,4 @@ obj-$(CONFIG_INPUT_WINBOND_CIR) += winbond-cir.o
> obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o
> obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o
> obj-$(CONFIG_INPUT_YEALINK) += yealink.o
> -
> +obj-$(CONFIG_INPUT_PEGA_ACCEL) += pega-accel.o
> diff --git a/drivers/input/misc/pega-accel.c b/drivers/input/misc/pega-accel.c
> new file mode 100644
> index 0000000..9b7ef05
> --- /dev/null
> +++ b/drivers/input/misc/pega-accel.c
> @@ -0,0 +1,133 @@
> +/*
> + * pega_accel.c - driver for accelerometer in Pegatron Lucid tablets
> + *
> + * Copyright (c) 2011 Wind River Systems
> + *
> + * Author: Andy Ross <andy.ross@windriver.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * 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.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> + */
> +
> +#include <linux/input-polldev.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <acpi/acpi_bus.h>
> +
> +#define DRIVER_NAME "pega_accel"
> +#define DRIVER_DESC "Pegatron Lucid Tablet Accelerometer"
> +
> +/* 1G accel is reported as ~256, so clamp to 2G */
> +#define CLAMP 512
> +
> +static struct input_polled_dev *ipdev;
> +
> +/* FIXME: this mechanism is *very* slow: ~50ms to read the three
> + * values. Pre-caching an acpi handle with acpi_get_handle has no
> + * effect, so the issue isn't in the parsing or tree walking... */
> +static int acpi_s16(char *method)
> +{
> + unsigned long long val = 0;
> + acpi_evaluate_integer(NULL, method, NULL, &val);
> + return (short)val;
> +}
> +
> +static void pega_accel_poll(struct input_polled_dev *ipdev)
> +{
> + /* Note transform, convert to "right/up/out" in the native
> + * landscape orientation (i.e. the vector is the direction of
> + * "real up" in the device's cartiesian coordinates). FIXME:
> + * is there a relevant convention to adhere to? */
> + int x = -acpi_s16("\\_SB.ATKD.XLRX");
> + int y = -acpi_s16("\\_SB.ATKD.XLRY");
> + int z = acpi_s16("\\_SB.ATKD.XLRZ");
Using the absolute path (\\_SB.ATKD) may not work on new hardware, you
should find the path of the device using the HID (AKT0100, or
something like that). But we may not core in this case since it's pega
specific.
> + x = clamp_val(x, -CLAMP, CLAMP);
> + y = clamp_val(y, -CLAMP, CLAMP);
> + z = clamp_val(z, -CLAMP, CLAMP);
> +
> + input_report_abs(ipdev->input, ABS_X, x);
y> + input_report_abs(ipdev->input, ABS_Y, y);
> + input_report_abs(ipdev->input, ABS_Z, z);
> + input_sync(ipdev->input);
> +}
> +
> +static void dev_noop_release(struct device *d) {}
> +
> +static int __devinit platform_probe(struct platform_device *pd)
> +{
> + int err = 0;
You should check if the device exists here, before trying to do
anything, (using the path or the HID, depending of what you'll do
about my previous comment)
> + ipdev = input_allocate_polled_device();
> + if (!ipdev)
> + return -ENOMEM;
> +
> + ipdev->poll = pega_accel_poll;
> + ipdev->poll_interval = 100;
> + ipdev->poll_interval_min = 10;
> + ipdev->poll_interval_max = 2000;
> +
> + ipdev->input->dev.parent = &pd->dev;
> + ipdev->input->dev.release = dev_noop_release;
> + ipdev->input->id.bustype = BUS_HOST;
> +
> + ipdev->input->name = DRIVER_DESC;
> + ipdev->input->phys = DRIVER_NAME "/input0";
> +
> + set_bit(EV_ABS, ipdev->input->evbit);
> + input_set_abs_params(ipdev->input, ABS_X, -CLAMP, CLAMP, 0, 0);
> + input_set_abs_params(ipdev->input, ABS_Y, -CLAMP, CLAMP, 0, 0);
> + input_set_abs_params(ipdev->input, ABS_Z, -CLAMP, CLAMP, 0, 0);
> +
> + err = input_register_polled_device(ipdev);
> + if (err)
> + input_free_polled_device(ipdev);
> +
> + return err;
> +}
> +
> +static int __devexit platform_remove(struct platform_device *pd)
> +{
> + input_unregister_polled_device(ipdev);
> + input_free_polled_device(ipdev);
> + ipdev = NULL;
> + return 0;
> +}
> +
> +static struct platform_driver platform_driver = {
> + .driver = {
> + .owner = THIS_MODULE,
> + .name = DRIVER_NAME,
> + },
> + .probe = platform_probe,
> + .remove = __devexit_p(platform_remove),
> +};
> +
> +static int __init mod_init(void)
> +{
> + return platform_driver_register(&platform_driver);
> +}
> +
> +static void __exit mod_exit(void)
> +{
> + platform_driver_unregister(&platform_driver);
> +}
> +
> +module_init(mod_init);
> +module_exit(mod_exit);
> +
> +MODULE_AUTHOR("Andy Ross <andy.ross@windriver.com>");
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION(DRIVER_DESC);
> +MODULE_ALIAS("dmi:*:bvrLucid-CE-133:*");
> --
> 1.7.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-input" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
--
Corentin Chary
http://xf.iksaif.net
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH 1/2] input: Pegatron Lucid accelerometer
2011-01-14 20:14 ` [PATCH 1/2] input: Pegatron Lucid accelerometer Andy Ross
2011-01-14 20:14 ` [PATCH 2/2] asus-laptop: Support pega_accel driver Andy Ross
2011-01-15 16:22 ` [PATCH 1/2] input: Pegatron Lucid accelerometer Corentin Chary
@ 2011-01-15 22:16 ` Dmitry Torokhov
2 siblings, 0 replies; 5+ messages in thread
From: Dmitry Torokhov @ 2011-01-15 22:16 UTC (permalink / raw)
To: Andy Ross
Cc: Corentin Chary, linux-input, acpi4asus-user, platform-driver-x86
On Fri, Jan 14, 2011 at 12:14:09PM -0800, Andy Ross wrote:
> From: Andy Ross <andy.ross@windriver.com>
>
> Add driver for the ACPI accelerometer interface on the Pegatron Lucid
> tablet.
>
> Signed-off-by: Andy Ross <andy.ross@windriver.com>
> ---
> drivers/input/misc/Kconfig | 11 +++
> drivers/input/misc/Makefile | 2 +-
> drivers/input/misc/pega-accel.c | 133 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 145 insertions(+), 1 deletions(-)
> create mode 100644 drivers/input/misc/pega-accel.c
>
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index b99b8cb..268c11d 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -448,4 +448,15 @@ config INPUT_ADXL34X_SPI
> To compile this driver as a module, choose M here: the
> module will be called adxl34x-spi.
>
> +config INPUT_PEGA_ACCEL
> + tristate "Support Pegatron Lucid accelerometer"
> + depends on ASUS_LAPTOP
> + default y
This is not a critical component; default should be 'n' (or just omit
default statement).
> + help
> + Say Y here if you want support for the built-in ACPI
> + accelerometer device on Pegatron Lucid tablet devices.
> +
> + To compile this driver as a module, choose M here: the module
> + will be called pega_accel.
> +
> endif
> diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
> index 1fe1f6c..2475305 100644
> --- a/drivers/input/misc/Makefile
> +++ b/drivers/input/misc/Makefile
> @@ -42,4 +42,4 @@ obj-$(CONFIG_INPUT_WINBOND_CIR) += winbond-cir.o
> obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o
> obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o
> obj-$(CONFIG_INPUT_YEALINK) += yealink.o
> -
> +obj-$(CONFIG_INPUT_PEGA_ACCEL) += pega-accel.o
Please keep Kconfig and Makefile sorted alphabetically.
> diff --git a/drivers/input/misc/pega-accel.c b/drivers/input/misc/pega-accel.c
> new file mode 100644
> index 0000000..9b7ef05
> --- /dev/null
> +++ b/drivers/input/misc/pega-accel.c
> @@ -0,0 +1,133 @@
> +/*
> + * pega_accel.c - driver for accelerometer in Pegatron Lucid tablets
What's up with people loving to put filename into comments? It just
makes renaming files more4 difficult.
> + *
> + * Copyright (c) 2011 Wind River Systems
> + *
> + * Author: Andy Ross <andy.ross@windriver.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * 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.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> + */
> +
> +#include <linux/input-polldev.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <acpi/acpi_bus.h>
> +
> +#define DRIVER_NAME "pega_accel"
> +#define DRIVER_DESC "Pegatron Lucid Tablet Accelerometer"
> +
> +/* 1G accel is reported as ~256, so clamp to 2G */
> +#define CLAMP 512
> +
> +static struct input_polled_dev *ipdev;
> +
> +/* FIXME: this mechanism is *very* slow: ~50ms to read the three
> + * values. Pre-caching an acpi handle with acpi_get_handle has no
> + * effect, so the issue isn't in the parsing or tree walking... */
> +static int acpi_s16(char *method)
> +{
> + unsigned long long val = 0;
> + acpi_evaluate_integer(NULL, method, NULL, &val);
> + return (short)val;
> +}
> +
> +static void pega_accel_poll(struct input_polled_dev *ipdev)
> +{
> + /* Note transform, convert to "right/up/out" in the native
> + * landscape orientation (i.e. the vector is the direction of
> + * "real up" in the device's cartiesian coordinates). FIXME:
> + * is there a relevant convention to adhere to? */
> + int x = -acpi_s16("\\_SB.ATKD.XLRX");
> + int y = -acpi_s16("\\_SB.ATKD.XLRY");
> + int z = acpi_s16("\\_SB.ATKD.XLRZ");
> +
> + x = clamp_val(x, -CLAMP, CLAMP);
> + y = clamp_val(y, -CLAMP, CLAMP);
> + z = clamp_val(z, -CLAMP, CLAMP);
> +
> + input_report_abs(ipdev->input, ABS_X, x);
> + input_report_abs(ipdev->input, ABS_Y, y);
> + input_report_abs(ipdev->input, ABS_Z, z);
> + input_sync(ipdev->input);
> +}
> +
> +static void dev_noop_release(struct device *d) {}
> +
> +static int __devinit platform_probe(struct platform_device *pd)
> +{
> + int err = 0;
No need to initialize to 0, in fact, it is quite often dangerous as it
masks compiler warnings.
> +
> + ipdev = input_allocate_polled_device();
> + if (!ipdev)
> + return -ENOMEM;
> +
> + ipdev->poll = pega_accel_poll;
> + ipdev->poll_interval = 100;
> + ipdev->poll_interval_min = 10;
> + ipdev->poll_interval_max = 2000;
> +
> + ipdev->input->dev.parent = &pd->dev;
> + ipdev->input->dev.release = dev_noop_release;
WTH is this???
> + ipdev->input->id.bustype = BUS_HOST;
> +
> + ipdev->input->name = DRIVER_DESC;
> + ipdev->input->phys = DRIVER_NAME "/input0";
> +
> + set_bit(EV_ABS, ipdev->input->evbit);
> + input_set_abs_params(ipdev->input, ABS_X, -CLAMP, CLAMP, 0, 0);
> + input_set_abs_params(ipdev->input, ABS_Y, -CLAMP, CLAMP, 0, 0);
> + input_set_abs_params(ipdev->input, ABS_Z, -CLAMP, CLAMP, 0, 0);
> +
> + err = input_register_polled_device(ipdev);
> + if (err)
> + input_free_polled_device(ipdev);
> +
> + return err;
> +}
> +
> +static int __devexit platform_remove(struct platform_device *pd)
> +{
> + input_unregister_polled_device(ipdev);
> + input_free_polled_device(ipdev);
> + ipdev = NULL;
> + return 0;
> +}
> +
> +static struct platform_driver platform_driver = {
> + .driver = {
> + .owner = THIS_MODULE,
> + .name = DRIVER_NAME,
> + },
> + .probe = platform_probe,
> + .remove = __devexit_p(platform_remove),
> +};
> +
> +static int __init mod_init(void)
> +{
> + return platform_driver_register(&platform_driver);
> +}
> +
> +static void __exit mod_exit(void)
> +{
> + platform_driver_unregister(&platform_driver);
> +}
> +
> +module_init(mod_init);
> +module_exit(mod_exit);
> +
> +MODULE_AUTHOR("Andy Ross <andy.ross@windriver.com>");
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION(DRIVER_DESC);
> +MODULE_ALIAS("dmi:*:bvrLucid-CE-133:*");
> --
> 1.7.1
>
Thanks.
--
Dmitry
^ permalink raw reply [flat|nested] 5+ messages in thread