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-rw-r--r--arch/arm/mach-clps711x/edb7211.c18
-rw-r--r--arch/arm/mach-clps711x/include/mach/hardware.h6
-rw-r--r--arch/arm/mach-clps711x/p720t.c21
-rw-r--r--drivers/video/clps711xfb.c107
4 files changed, 44 insertions, 108 deletions
diff --git a/arch/arm/mach-clps711x/edb7211.c b/arch/arm/mach-clps711x/edb7211.c
index 81cc6835d7a..d5832b3557a 100644
--- a/arch/arm/mach-clps711x/edb7211.c
+++ b/arch/arm/mach-clps711x/edb7211.c
@@ -13,6 +13,7 @@
#include <linux/memblock.h>
#include <linux/types.h>
#include <linux/interrupt.h>
+#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <asm/setup.h>
@@ -30,6 +31,7 @@
#define EDB7211_LCD_DC_DC_EN CLPS711X_GPIO(3, 1)
#define EDB7211_LCDEN CLPS711X_GPIO(3, 2)
+#define EDB7211_LCDBL CLPS711X_GPIO(3, 3)
#define EDB7211_CS8900_BASE (CS2_PHYS_BASE + 0x300)
#define EDB7211_CS8900_IRQ (IRQ_EINT3)
@@ -56,9 +58,22 @@ static struct plat_lcd_data edb7211_lcd_power_pdata = {
.set_power = edb7211_lcd_power_set,
};
+static void edb7211_lcd_backlight_set_intensity(int intensity)
+{
+ gpio_set_value(EDB7211_LCDBL, intensity);
+}
+
+static struct generic_bl_info edb7211_lcd_backlight_pdata = {
+ .name = "lcd-backlight.0",
+ .default_intensity = 0x01,
+ .max_intensity = 0x01,
+ .set_bl_intensity = edb7211_lcd_backlight_set_intensity,
+};
+
static struct gpio edb7211_gpios[] __initconst = {
{ EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW, "LCD DC-DC" },
{ EDB7211_LCDEN, GPIOF_OUT_INIT_LOW, "LCD POWER" },
+ { EDB7211_LCDBL, GPIOF_OUT_INIT_LOW, "LCD BACKLIGHT" },
};
static struct map_desc edb7211_io_desc[] __initdata = {
@@ -117,6 +132,9 @@ static void __init edb7211_init(void)
platform_device_register_data(&platform_bus, "platform-lcd", 0,
&edb7211_lcd_power_pdata,
sizeof(edb7211_lcd_power_pdata));
+ platform_device_register_data(&platform_bus, "generic-bl", 0,
+ &edb7211_lcd_backlight_pdata,
+ sizeof(edb7211_lcd_backlight_pdata));
platform_device_register_simple("video-clps711x", 0, NULL, 0);
platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
ARRAY_SIZE(edb7211_cs8900_resource));
diff --git a/arch/arm/mach-clps711x/include/mach/hardware.h b/arch/arm/mach-clps711x/include/mach/hardware.h
index 6acf714031e..1ebf7b9e69f 100644
--- a/arch/arm/mach-clps711x/include/mach/hardware.h
+++ b/arch/arm/mach-clps711x/include/mach/hardware.h
@@ -81,10 +81,4 @@
#endif /* CONFIG_ARCH_EDB7211 */
-/*
- * Relevant bits in port D, which controls power to the various parts of
- * the LCD on the EDB7211.
- */
-#define EDB_PD3_LCDBL (1<<3)
-
#endif
diff --git a/arch/arm/mach-clps711x/p720t.c b/arch/arm/mach-clps711x/p720t.c
index e25f10ed560..1518fc83bab 100644
--- a/arch/arm/mach-clps711x/p720t.c
+++ b/arch/arm/mach-clps711x/p720t.c
@@ -25,6 +25,8 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/leds.h>
+#include <linux/sizes.h>
+#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand-gpio.h>
@@ -33,7 +35,6 @@
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/setup.h>
-#include <asm/sizes.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -103,6 +104,21 @@ static struct plat_lcd_data p720t_lcd_power_pdata = {
.set_power = p720t_lcd_power_set,
};
+static void p720t_lcd_backlight_set_intensity(int intensity)
+{
+ if (intensity)
+ PLD_PWR |= PLD_S3_ON;
+ else
+ PLD_PWR = 0;
+}
+
+static struct generic_bl_info p720t_lcd_backlight_pdata = {
+ .name = "lcd-backlight.0",
+ .default_intensity = 0x01,
+ .max_intensity = 0x01,
+ .set_bl_intensity = p720t_lcd_backlight_set_intensity,
+};
+
/*
* Map the P720T system PLD. It occupies two address spaces:
* 0x10000000 and 0x10400000. We map both regions as one.
@@ -187,6 +203,9 @@ static void __init p720t_init(void)
platform_device_register_data(&platform_bus, "platform-lcd", 0,
&p720t_lcd_power_pdata,
sizeof(p720t_lcd_power_pdata));
+ platform_device_register_data(&platform_bus, "generic-bl", 0,
+ &p720t_lcd_backlight_pdata,
+ sizeof(p720t_lcd_backlight_pdata));
platform_device_register_simple("video-clps711x", 0, NULL, 0);
}
diff --git a/drivers/video/clps711xfb.c b/drivers/video/clps711xfb.c
index 1902551f6e4..63ecdf8f7ba 100644
--- a/drivers/video/clps711xfb.c
+++ b/drivers/video/clps711xfb.c
@@ -22,19 +22,15 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/init.h>
-#include <linux/proc_fs.h>
#include <linux/delay.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <linux/uaccess.h>
-#include <mach/syspld.h>
-
struct fb_info *cfb;
#define CMAP_MAX_SIZE 16
@@ -162,25 +158,12 @@ clps7111fb_set_par(struct fb_info *info)
static int clps7111fb_blank(int blank, struct fb_info *info)
{
- if (blank) {
- if (machine_is_edb7211()) {
- /* Turn off the LCD backlight. */
- clps_writeb(clps_readb(PDDR) & ~EDB_PD3_LCDBL, PDDR);
-
- /* Disable LCD controller. */
- clps_writel(clps_readl(SYSCON1) & ~SYSCON1_LCDEN,
- SYSCON1);
- }
- } else {
- if (machine_is_edb7211()) {
- /* Enable LCD controller. */
- clps_writel(clps_readl(SYSCON1) | SYSCON1_LCDEN,
- SYSCON1);
-
- /* Turn on the LCD backlight. */
- clps_writeb(clps_readb(PDDR) | EDB_PD3_LCDBL, PDDR);
- }
- }
+ /* Enable/Disable LCD controller. */
+ if (blank)
+ clps_writel(clps_readl(SYSCON1) & ~SYSCON1_LCDEN, SYSCON1);
+ else
+ clps_writel(clps_readl(SYSCON1) | SYSCON1_LCDEN, SYSCON1);
+
return 0;
}
@@ -195,62 +178,6 @@ static struct fb_ops clps7111fb_ops = {
.fb_imageblit = cfb_imageblit,
};
-static int backlight_proc_show(struct seq_file *m, void *v)
-{
- if (machine_is_edb7211()) {
- seq_printf(m, "%d\n",
- (clps_readb(PDDR) & EDB_PD3_LCDBL) ? 1 : 0);
- }
-
- return 0;
-}
-
-static int backlight_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, backlight_proc_show, NULL);
-}
-
-static ssize_t backlight_proc_write(struct file *file, const char *buffer,
- size_t count, loff_t *pos)
-{
- unsigned char char_value;
- int value;
-
- if (count < 1) {
- return -EINVAL;
- }
-
- if (copy_from_user(&char_value, buffer, 1))
- return -EFAULT;
-
- value = char_value - '0';
-
- if (machine_is_edb7211()) {
- unsigned char port_d;
-
- port_d = clps_readb(PDDR);
-
- if (value) {
- port_d |= EDB_PD3_LCDBL;
- } else {
- port_d &= ~EDB_PD3_LCDBL;
- }
-
- clps_writeb(port_d, PDDR);
- }
-
- return count;
-}
-
-static const struct file_operations backlight_proc_fops = {
- .owner = THIS_MODULE,
- .open = backlight_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = backlight_proc_write,
-};
-
static void __devinit clps711x_guess_lcd_params(struct fb_info *info)
{
unsigned int lcdcon, syscon, size;
@@ -359,22 +286,6 @@ static int __devinit clps711x_fb_probe(struct platform_device *pdev)
fb_alloc_cmap(&cfb->cmap, CMAP_MAX_SIZE, 0);
- if (!proc_create("backlight", 0444, NULL, &backlight_proc_fops)) {
- printk("Couldn't create the /proc entry for the backlight.\n");
- return -EINVAL;
- }
-
- /*
- * Power up the LCD
- */
- if (machine_is_p720t())
- PLD_PWR |= PLD_S3_ON;
-
- if (machine_is_edb7211()) {
- /* Turn on the LCD backlight. */
- clps_writeb(clps_readb(PDDR) | EDB_PD3_LCDBL, PDDR);
- }
-
err = register_framebuffer(cfb);
out: return err;
@@ -385,12 +296,6 @@ static int __devexit clps711x_fb_remove(struct platform_device *pdev)
unregister_framebuffer(cfb);
kfree(cfb);
- /*
- * Power down the LCD
- */
- if (machine_is_p720t())
- PLD_PWR &= ~PLD_S3_ON;
-
return 0;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-18 14:28:00 +0000