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[ARM] pxa: make LogicPD 270 use the generic PWM backlight driver 

Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2008-05-18 13:11:02 +01:00 committed by Russell King
parent 402e490997
commit 4a73071947
2 changed files with 18 additions and 21 deletions
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1
arch/arm/mach-pxa/Kconfig
View File

@ -37,6 +37,7 @@ config ARCH_LUBBOCK
config MACH_LOGICPD_PXA270
bool "LogicPD PXA270 Card Engine Development Platform"
select PXA27x
select HAVE_PWM
config MACH_MAINSTONE
bool "Intel HCDDBBVA0 Development Platform"

38
arch/arm/mach-pxa/lpd270.c
View File

@ -23,6 +23,7 @@
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/pwm_backlight.h>
#include <asm/types.h>
#include <asm/setup.h>
@ -233,21 +234,20 @@ static struct platform_device lpd270_flash_device[2] = {
},
};
static void lpd270_backlight_power(int on)
{
if (on) {
pxa_gpio_mode(GPIO16_PWM0_MD);
pxa_set_cken(CKEN_PWM0, 1);
PWM_CTRL0 = 0;
PWM_PWDUTY0 = 0x3ff;
PWM_PERVAL0 = 0x3ff;
} else {
PWM_CTRL0 = 0;
PWM_PWDUTY0 = 0x0;
PWM_PERVAL0 = 0x3FF;
pxa_set_cken(CKEN_PWM0, 0);
}
}
static struct platform_pwm_backlight_data lpd270_backlight_data = {
.pwm_id = 0,
.max_brightness = 1,
.dft_brightness = 1,
.pwm_period_ns = 78770,
};
static struct platform_device lpd270_backlight_device = {
.name = "pwm-backlight",
.dev = {
.parent = &pxa27x_device_pwm0.dev,
.platform_data = &lpd270_backlight_data,
},
};
/* 5.7" TFT QVGA (LoLo display number 1) */
static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
@ -269,7 +269,6 @@ static struct pxafb_mach_info sharp_lq057q3dc02 = {
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 12.1" TFT SVGA (LoLo display number 2) */
@ -292,7 +291,6 @@ static struct pxafb_mach_info sharp_lq121s1dg31 = {
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 3.6" TFT QVGA (LoLo display number 3) */
@ -315,7 +313,6 @@ static struct pxafb_mach_info sharp_lq036q1da01 = {
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 6.4" TFT VGA (LoLo display number 5) */
@ -338,7 +335,6 @@ static struct pxafb_mach_info sharp_lq64d343 = {
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 10.4" TFT VGA (LoLo display number 7) */
@ -361,7 +357,6 @@ static struct pxafb_mach_info sharp_lq10d368 = {
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 3.5" TFT QVGA (LoLo display number 8) */
@ -384,7 +379,6 @@ static struct pxafb_mach_info sharp_lq035q7db02_20 = {
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
static struct pxafb_mach_info *lpd270_lcd_to_use;
@ -414,6 +408,7 @@ __setup("lcd=", lpd270_set_lcd);
static struct platform_device *platform_devices[] __initdata = {
&smc91x_device,
&lpd270_backlight_device,
&lpd270_audio_device,
&lpd270_flash_device[0],
&lpd270_flash_device[1],
@ -454,6 +449,7 @@ static void __init lpd270_init(void)
* On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
*/
pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
pxa_gpio_mode(GPIO16_PWM0_MD);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));