mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-23 23:16:16 +02:00
Add package pwm-gpio-custom
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22350 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
claudio
parent
b016e98df2
commit
ffa085b6bf
54
package/pwm-gpio-custom/Makefile
Normal file
54
package/pwm-gpio-custom/Makefile
Normal file
@ -0,0 +1,54 @@
|
||||
#
|
||||
# Copyright (C) 2010 OpenWrt.org
|
||||
#
|
||||
# This is free software, licensed under the GNU General Public License v2.
|
||||
# See /LICENSE for more information.
|
||||
#
|
||||
|
||||
include $(TOPDIR)/rules.mk
|
||||
include $(INCLUDE_DIR)/kernel.mk
|
||||
|
||||
PKG_NAME:=pwm-gpio-custom
|
||||
PKG_RELEASE:=1
|
||||
|
||||
include $(INCLUDE_DIR)/package.mk
|
||||
|
||||
define KernelPackage/pwm-gpio-custom
|
||||
SUBMENU:=Other modules
|
||||
TITLE:=Custom GPIO-based PWM device
|
||||
DEPENDS:=+kmod-pwm-gpio
|
||||
FILES:=$(PKG_BUILD_DIR)/pwm-gpio-custom.ko
|
||||
KCONFIG:=
|
||||
endef
|
||||
|
||||
define KernelPackage/pwm-gpio-custom/description
|
||||
Kernel module to register a custom pwm-gpio platform device.
|
||||
endef
|
||||
|
||||
EXTRA_KCONFIG:= \
|
||||
CONFIG_PWM_GPIO_CUSTOM=m
|
||||
|
||||
EXTRA_CFLAGS:= \
|
||||
$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
|
||||
$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG))))
|
||||
|
||||
MAKE_OPTS:= \
|
||||
ARCH="$(LINUX_KARCH)" \
|
||||
CROSS_COMPILE="$(TARGET_CROSS)" \
|
||||
SUBDIRS="$(PKG_BUILD_DIR)" \
|
||||
EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
|
||||
$(EXTRA_KCONFIG)
|
||||
|
||||
define Build/Prepare
|
||||
mkdir -p $(PKG_BUILD_DIR)
|
||||
$(CP) ./src/* $(PKG_BUILD_DIR)/
|
||||
endef
|
||||
|
||||
define Build/Compile
|
||||
$(MAKE) -C "$(LINUX_DIR)" \
|
||||
$(MAKE_OPTS) \
|
||||
modules
|
||||
endef
|
||||
|
||||
$(eval $(call KernelPackage,pwm-gpio-custom))
|
||||
|
||||
4
package/pwm-gpio-custom/src/Kconfig
Normal file
4
package/pwm-gpio-custom/src/Kconfig
Normal file
@ -0,0 +1,4 @@
|
||||
config PWM_MASTER_GPIO_CUSTOM
|
||||
tristate "Custom GPIO-based PWM driver"
|
||||
depends on GENERIC_GPIO
|
||||
select PWM_GENERIC_GPIO
|
||||
1
package/pwm-gpio-custom/src/Makefile
Normal file
1
package/pwm-gpio-custom/src/Makefile
Normal file
@ -0,0 +1 @@
|
||||
obj-${CONFIG_PWM_GPIO_CUSTOM} += pwm-gpio-custom.o
|
||||
217
package/pwm-gpio-custom/src/pwm-gpio-custom.c
Normal file
217
package/pwm-gpio-custom/src/pwm-gpio-custom.c
Normal file
@ -0,0 +1,217 @@
|
||||
/*
|
||||
* Custom GPIO-based PWM driver
|
||||
*
|
||||
* Based on w1-gpio-custom by Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
|
||||
* Copyright (C) 2010 Claudio Mignanti <c.mignanti@gmail.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.
|
||||
*
|
||||
* ---------------------------------------------------------------------------
|
||||
*
|
||||
* The behaviour of this driver can be altered by setting some parameters
|
||||
* from the insmod command line.
|
||||
*
|
||||
* The following parameters are adjustable:
|
||||
*
|
||||
* bus0 These four arguments must be arrays
|
||||
* bus1
|
||||
* .....
|
||||
* bus10 <id>,<pin>,<od>
|
||||
*
|
||||
* where:
|
||||
*
|
||||
* <id> ID to used as device_id for the corresponding bus (required)
|
||||
* <pin> GPIO pin ID for PWM channel (required)
|
||||
* *
|
||||
* If this driver is built into the kernel, you can use the following kernel
|
||||
* command line parameters, with the same values as the corresponding module
|
||||
* parameters listed above:
|
||||
*
|
||||
* pwm-gpio-custom.bus0
|
||||
* pwm-gpio-custom.bus1
|
||||
* pwm-gpio-custom.bunN
|
||||
* pwm-gpio-custom.bus10
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
#include <linux/pwm/pwm.h>
|
||||
|
||||
#define DRV_NAME "pwm-gpio-custom"
|
||||
#define DRV_DESC "Custom GPIO-based pwm driver"
|
||||
#define DRV_VERSION "0.1.0"
|
||||
|
||||
#define PFX DRV_NAME ": "
|
||||
|
||||
#define BUS_PARAM_ID 0
|
||||
#define BUS_PARAM_PIN 1
|
||||
|
||||
#define BUS_PARAM_REQUIRED 2
|
||||
#define BUS_PARAM_COUNT 2
|
||||
#define BUS_COUNT_MAX 10
|
||||
|
||||
static unsigned int bus0[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus1[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus2[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus3[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus4[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus5[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus6[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus7[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus8[BUS_PARAM_COUNT] __initdata;
|
||||
static unsigned int bus9[BUS_PARAM_COUNT] __initdata;
|
||||
|
||||
static unsigned int bus_nump[BUS_COUNT_MAX] __initdata;
|
||||
|
||||
#define BUS_PARM_DESC " config -> id,pin"
|
||||
|
||||
module_param_array(bus0, uint, &bus_nump[0], 0);
|
||||
MODULE_PARM_DESC(bus0, "bus0" BUS_PARM_DESC);
|
||||
module_param_array(bus1, uint, &bus_nump[1], 0);
|
||||
MODULE_PARM_DESC(bus1, "bus1" BUS_PARM_DESC);
|
||||
module_param_array(bus2, uint, &bus_nump[2], 0);
|
||||
MODULE_PARM_DESC(bus2, "bus2" BUS_PARM_DESC);
|
||||
module_param_array(bus3, uint, &bus_nump[3], 0);
|
||||
MODULE_PARM_DESC(bus3, "bus3" BUS_PARM_DESC);
|
||||
module_param_array(bus4, uint, &bus_nump[4], 0);
|
||||
MODULE_PARM_DESC(bus4, "bus4" BUS_PARM_DESC);
|
||||
module_param_array(bus5, uint, &bus_nump[5], 0);
|
||||
MODULE_PARM_DESC(bus5, "bus5" BUS_PARM_DESC);
|
||||
module_param_array(bus6, uint, &bus_nump[6], 0);
|
||||
MODULE_PARM_DESC(bus6, "bus6" BUS_PARM_DESC);
|
||||
module_param_array(bus7, uint, &bus_nump[7], 0);
|
||||
MODULE_PARM_DESC(bus7, "bus7" BUS_PARM_DESC);
|
||||
module_param_array(bus8, uint, &bus_nump[8], 0);
|
||||
MODULE_PARM_DESC(bus8, "bus8" BUS_PARM_DESC);
|
||||
module_param_array(bus9, uint, &bus_nump[9], 0);
|
||||
MODULE_PARM_DESC(bus9, "bus9" BUS_PARM_DESC);
|
||||
|
||||
static struct platform_device *devices[BUS_COUNT_MAX];
|
||||
static unsigned int nr_devices;
|
||||
|
||||
static void pwm_gpio_custom_cleanup(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < nr_devices; i++)
|
||||
if (devices[i])
|
||||
platform_device_put(devices[i]);
|
||||
}
|
||||
|
||||
static int __init pwm_gpio_custom_add_one(unsigned int id, unsigned int *params)
|
||||
{
|
||||
struct platform_device *pdev;
|
||||
struct gpio_pwm_platform_data pdata;
|
||||
int err;
|
||||
|
||||
if (!bus_nump[id])
|
||||
return 0;
|
||||
|
||||
if (bus_nump[id] < BUS_PARAM_REQUIRED) {
|
||||
printk(KERN_ERR PFX "not enough parameters for bus%d\n", id);
|
||||
err = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
|
||||
pdev = platform_device_alloc("gpio_pwm", params[BUS_PARAM_ID]);
|
||||
if (!pdev) {
|
||||
err = -ENOMEM;
|
||||
goto err;
|
||||
}
|
||||
|
||||
pdata.gpio = params[BUS_PARAM_PIN];
|
||||
|
||||
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
|
||||
if (err)
|
||||
goto err_put;
|
||||
|
||||
err = platform_device_add(pdev);
|
||||
if (err)
|
||||
goto err_put;
|
||||
|
||||
devices[nr_devices++] = pdev;
|
||||
return 0;
|
||||
|
||||
err_put:
|
||||
platform_device_put(pdev);
|
||||
err:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __init pwm_gpio_custom_probe(void)
|
||||
{
|
||||
int err;
|
||||
|
||||
nr_devices = 0;
|
||||
printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
|
||||
|
||||
err = pwm_gpio_custom_add_one(0, bus0);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(1, bus1);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(2, bus2);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(3, bus3);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(4, bus4);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(5, bus5);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(6, bus6);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(7, bus7);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(8, bus8);
|
||||
if (err) goto err;
|
||||
|
||||
err = pwm_gpio_custom_add_one(9, bus9);
|
||||
if (err) goto err;
|
||||
|
||||
if (!nr_devices) {
|
||||
printk(KERN_ERR PFX "no bus parameter(s) specified\n");
|
||||
err = -ENODEV;
|
||||
goto err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
pwm_gpio_custom_cleanup();
|
||||
return err;
|
||||
}
|
||||
|
||||
#ifdef MODULE
|
||||
static int __init pwm_gpio_custom_init(void)
|
||||
{
|
||||
return pwm_gpio_custom_probe();
|
||||
}
|
||||
module_init(pwm_gpio_custom_init);
|
||||
|
||||
static void __exit pwm_gpio_custom_exit(void)
|
||||
{
|
||||
pwm_gpio_custom_cleanup();
|
||||
}
|
||||
module_exit(pwm_gpio_custom_exit);
|
||||
#else
|
||||
subsys_initcall(pwm_gpio_custom_probe);
|
||||
#endif /* MODULE*/
|
||||
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_AUTHOR("Bifferos <bifferos at yahoo.co.uk >");
|
||||
MODULE_AUTHOR("Claudio Mignanti <c.mignanti@gmail.com >");
|
||||
MODULE_DESCRIPTION(DRV_DESC);
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user