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Date: Tue, 6 Oct 2009 08:25:14 -0700
From: Randy Dunlap <randy.dunlap@...cle.com>
To: Kyungmin Park <kmpark@...radead.org>
Cc: linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
soni.trilok@...il.com
Subject: Re: [PATCH] Haptic class support (v2)
On Tue, 06 Oct 2009 16:45:33 +0900 Kyungmin Park wrote:
> This patch includes two haptic devices, isa1000 and isa1200
> ISA1000 is gpio based haptic, but isa1200 is based on I2C
> Both are working on Samsung SoCs and tested.
>
> To enable the haptic, echo 1 > /sys/class/haptic/${name}/enable
> You can adjust the level by echo ${level} > /sys/class/haptic/${name}/enable
> or
> With oneshot feature, echo ${msec time} > /sys/class/haptic/${name}/oneshot
>
> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
> ---
> drivers/Kconfig | 2
> drivers/Makefile | 1
> drivers/haptic/Kconfig | 31 ++
> drivers/haptic/Makefile | 8
> drivers/haptic/haptic-class.c | 256 ++++++++++++++++++++++
> drivers/haptic/haptic-samsung-pwm.c | 377 ++++++++++++++++++++++++++++++++
> drivers/haptic/haptic.h | 35 +++
> drivers/haptic/isa1200.c | 413 ++++++++++++++++++++++++++++++++++++
> include/linux/haptic.h | 85 +++++++
> 9 files changed, 1208 insertions(+)
>
> diff --git a/drivers/Kconfig b/drivers/Kconfig
> index 48bbdbe..d44a601 100644
> --- a/drivers/Kconfig
> +++ b/drivers/Kconfig
> @@ -62,6 +62,8 @@ source "drivers/power/Kconfig"
>
> source "drivers/hwmon/Kconfig"
>
> +source "drivers/haptic/Kconfig"
> +
> source "drivers/thermal/Kconfig"
>
> source "drivers/watchdog/Kconfig"
> diff --git a/drivers/Makefile b/drivers/Makefile
> index 6ee53c7..16b8f67 100644
> --- a/drivers/Makefile
> +++ b/drivers/Makefile
> @@ -77,6 +77,7 @@ obj-$(CONFIG_PPS) += pps/
> obj-$(CONFIG_W1) += w1/
> obj-$(CONFIG_POWER_SUPPLY) += power/
> obj-$(CONFIG_HWMON) += hwmon/
> +obj-$(CONFIG_HAPTIC) += haptic/
> obj-$(CONFIG_THERMAL) += thermal/
> obj-$(CONFIG_WATCHDOG) += watchdog/
> obj-$(CONFIG_PHONE) += telephony/
> diff --git a/drivers/haptic/Kconfig b/drivers/haptic/Kconfig
> new file mode 100644
> index 0000000..9acb02a
> --- /dev/null
> +++ b/drivers/haptic/Kconfig
> @@ -0,0 +1,31 @@
> +menuconfig HAPTIC
> + bool "HAPTIC support"
> + help
> + Say Y to enalbe haptic support. It enables the haptic and controlled
enable
The next sentence is incomplete. Maybe it should be (but I don't know):
It enables haptic devices and controls
> + from both userspace and kernel
and kernel.
> +
> +if HAPTIC
> +
> +config HAPTIC_CLASS
> + tristate "Haptic Class Support"
> + help
> + This option enables the haptic sysfs class in /sys/class/haptic.
> +
> +comment "Haptic drivers"
> +
> +config HAPTIC_SAMSUNG_PWM
> + tristate "Haptic Support for SAMSUNG PWM-controlled motor (ISA1000)"
> + depends on HAPTIC_CLASS && (ARCH_S3C64XX || ARCH_S5PC1XX)
> + help
> + This options enables support for haptic connected to GPIO lines
> + controlled by a PWM timer on SAMSUNG CPUs.
> +
> +comment "Haptic chips"
> +
> +config HAPTIC_ISA1200
> + tristate "Haptic Motor"
> + depends on HAPTIC_CLASS && I2C
> + help
> + The ISA1200 is a high performance enhanced haptic motor driver
end sentence with period ('.')
> +
> +endif # HAPTIC
> diff --git a/drivers/haptic/haptic-class.c b/drivers/haptic/haptic-class.c
> new file mode 100644
> index 0000000..b93e8e0
> --- /dev/null
> +++ b/drivers/haptic/haptic-class.c
> @@ -0,0 +1,256 @@
> +/*
> + * Haptic Class Core
> + *
> + * Copyright (C) 2008 Samsung Electronics
> + * Kyungmin Park <kyungmin.park@...sung.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + */
> +
> +/**
> + * haptic_classdev_unregister - unregisters a object of haptic_properties class.
s/haptic_properties/haptic_classdev/ ??
> + * @haptic_cdev: the haptic device to unregister
> + *
> + * Unregisters a previously registered via haptic_classdev_register object.
> + */
> +void haptic_classdev_unregister(struct haptic_classdev *haptic_cdev)
> +{
> + class_remove_file(haptic_class, &class_attr_enable);
> + class_remove_file(haptic_class, &class_attr_oneshot);
> + class_remove_file(haptic_class, &class_attr_level);
> + class_remove_file(haptic_class, &class_attr_level_max);
> + class_remove_file(haptic_class, &class_attr_value);
> +
> + device_unregister(haptic_cdev->dev);
> +
> + down_write(&haptic_list_lock);
> + list_del(&haptic_cdev->node);
> + up_write(&haptic_list_lock);
> +}
> +EXPORT_SYMBOL_GPL(haptic_classdev_unregister);
> diff --git a/drivers/haptic/haptic-samsung-pwm.c b/drivers/haptic/haptic-samsung-pwm.c
> new file mode 100644
> index 0000000..0fc1093
> --- /dev/null
> +++ b/drivers/haptic/haptic-samsung-pwm.c
> @@ -0,0 +1,377 @@
> +/*
> + * drivers/haptic/haptic-samsung-pwm.c
> + *
> + * Copyright (C) 2008 Samsung Electronics
> + * Kyungmin Park <kyungmin.park@...sung.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> diff --git a/drivers/haptic/isa1200.c b/drivers/haptic/isa1200.c
> new file mode 100644
> index 0000000..19a3801
> --- /dev/null
> +++ b/drivers/haptic/isa1200.c
> @@ -0,0 +1,413 @@
> +/*
> + * isa1200.c - Haptic Motor
> + *
> + * Copyright (C) 2009 Samsung Electronics
> + * Kyungmin Park <kyungmin.park@...sung.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +struct isa1200_chip {
> + struct i2c_client *client;
> + struct pwm_device *pwm;
> + struct haptic_classdev cdev;
> + struct work_struct work;
> + struct timer_list timer;
> +
> + unsigned int len; /* LDO enable */
> + unsigned int hen; /* Haptic haptic enable */
Drop one "haptic" ?
> +
> + int enable;
> + int powered;
> +
> + int level;
> + int level_max;
> +
> + int ldo_level;
> +};
---
~Randy
--
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