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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 config MACH_LOGICPD_PXA270
bool "LogicPD PXA270 Card Engine Development Platform" bool "LogicPD PXA270 Card Engine Development Platform"
select PXA27x select PXA27x
select HAVE_PWM
config MACH_MAINSTONE config MACH_MAINSTONE
bool "Intel HCDDBBVA0 Development Platform" bool "Intel HCDDBBVA0 Development Platform"

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

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