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ARM: SAMSUNG: Move PWM device definition from plat-s3c24xx to plat-samsung

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This patch does the following:-
1. It moves file pwm.c from plat-s3c24xx to plat-samsung. This will
   enable all machines with Samsung SoCs to make use of the same code.
2. The device definitions have been separated to a new file dev-pwm.c
   for better clarity and structure.
3. It will enable all Samsung S3C and S5P series SoC's to use common
   PWM Kconfig definition.

Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Banajit Goswami 2011-02-28 22:24:51 +05:30 committed by Kukjin Kim
parent dd9c1549ed
commit 2ce3013709
6 changed files with 69 additions and 42 deletions
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4
arch/arm/mach-s3c64xx/Kconfig
View file

@ -231,7 +231,7 @@ config MACH_HMT
select S3C_DEV_NAND
select S3C_DEV_USB_HOST
select S3C64XX_SETUP_FB_24BPP
select HAVE_PWM
select SAMSUNG_DEV_PWM
help
Machine support for the Airgoo HMT
@ -249,8 +249,8 @@ config MACH_SMARTQ
select S3C64XX_SETUP_SDHCI
select S3C64XX_SETUP_FB_24BPP
select SAMSUNG_DEV_ADC
select SAMSUNG_DEV_PWM
select SAMSUNG_DEV_TS
select HAVE_PWM
help
Shared machine support for SmartQ 5/7

7
arch/arm/plat-s3c24xx/Kconfig
View file

@ -56,13 +56,6 @@ config S3C24XX_DCLK
help
Clock code for supporting DCLK/CLKOUT on S3C24XX architectures
config S3C24XX_PWM
bool "PWM device support"
select HAVE_PWM
help
Support for exporting the PWM timer blocks via the pwm device
system.
# gpio configurations
config S3C24XX_GPIO_EXTRA

13
arch/arm/plat-samsung/Kconfig
View file

@ -273,6 +273,19 @@ config SAMSUNG_DEV_KEYPAD
help
Compile in platform device definitions for keypad
config SAMSUNG_DEV_PWM
bool
default y if ARCH_S3C2410
help
Compile in platform device definition for PWM Timer
config S3C24XX_PWM
bool "PWM device support"
select HAVE_PWM
help
Support for exporting the PWM timer blocks via the pwm device
system
# DMA
config S3C_DMA

1
arch/arm/plat-samsung/Makefile
View file

@ -59,6 +59,7 @@ obj-$(CONFIG_SAMSUNG_DEV_ADC) += dev-adc.o
obj-$(CONFIG_SAMSUNG_DEV_IDE) += dev-ide.o
obj-$(CONFIG_SAMSUNG_DEV_TS) += dev-ts.o
obj-$(CONFIG_SAMSUNG_DEV_KEYPAD) += dev-keypad.o
obj-$(CONFIG_SAMSUNG_DEV_PWM) += dev-pwm.o
# DMA support

53
arch/arm/plat-samsung/dev-pwm.c Normal file
View file

@ -0,0 +1,53 @@
/* linux/arch/arm/plat-samsung/dev-pwm.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Copyright (c) 2007 Ben Dooks
* Copyright (c) 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>, <ben-linux@fluff.org>
*
* S3C series device definition for the PWM timer
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <mach/irqs.h>
#include <plat/devs.h>
#define TIMER_RESOURCE_SIZE (1)
#define TIMER_RESOURCE(_tmr, _irq) \
(struct resource [TIMER_RESOURCE_SIZE]) { \
[0] = { \
.start = _irq, \
.end = _irq, \
.flags = IORESOURCE_IRQ \
} \
}
#define DEFINE_S3C_TIMER(_tmr_no, _irq) \
.name = "s3c24xx-pwm", \
.id = _tmr_no, \
.num_resources = TIMER_RESOURCE_SIZE, \
.resource = TIMER_RESOURCE(_tmr_no, _irq), \
/*
* since we already have an static mapping for the timer,
* we do not bother setting any IO resource for the base.
*/
struct platform_device s3c_device_timer[] = {
[0] = { DEFINE_S3C_TIMER(0, IRQ_TIMER0) },
[1] = { DEFINE_S3C_TIMER(1, IRQ_TIMER1) },
[2] = { DEFINE_S3C_TIMER(2, IRQ_TIMER2) },
[3] = { DEFINE_S3C_TIMER(3, IRQ_TIMER3) },
[4] = { DEFINE_S3C_TIMER(4, IRQ_TIMER4) },
};
EXPORT_SYMBOL(s3c_device_timer);

33
arch/arm/plat-samsung/pwm.c
View file

@ -20,10 +20,8 @@
#include <linux/io.h>
#include <linux/pwm.h>
#include <mach/irqs.h>
#include <mach/map.h>
#include <plat/devs.h>
#include <plat/regs-timer.h>
struct pwm_device {
@ -47,37 +45,6 @@ struct pwm_device {
static struct clk *clk_scaler[2];
/* Standard setup for a timer block. */
#define TIMER_RESOURCE_SIZE (1)
#define TIMER_RESOURCE(_tmr, _irq) \
(struct resource [TIMER_RESOURCE_SIZE]) { \
[0] = { \
.start = _irq, \
.end = _irq, \
.flags = IORESOURCE_IRQ \
} \
}
#define DEFINE_S3C_TIMER(_tmr_no, _irq) \
.name = "s3c24xx-pwm", \
.id = _tmr_no, \
.num_resources = TIMER_RESOURCE_SIZE, \
.resource = TIMER_RESOURCE(_tmr_no, _irq), \
/* since we already have an static mapping for the timer, we do not
* bother setting any IO resource for the base.
*/
struct platform_device s3c_device_timer[] = {
[0] = { DEFINE_S3C_TIMER(0, IRQ_TIMER0) },
[1] = { DEFINE_S3C_TIMER(1, IRQ_TIMER1) },
[2] = { DEFINE_S3C_TIMER(2, IRQ_TIMER2) },
[3] = { DEFINE_S3C_TIMER(3, IRQ_TIMER3) },
[4] = { DEFINE_S3C_TIMER(4, IRQ_TIMER4) },
};
static inline int pwm_is_tdiv(struct pwm_device *pwm)
{
return clk_get_parent(pwm->clk) == pwm->clk_div;