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authorAlexander Shiyan <shc_work@mail.ru>2012-11-17 17:57:18 +0400
committerOlof Johansson <olof@lixom.net>2012-11-21 09:57:44 -0800
commit87c37b51ade7d1296ab99ed8f237637bed7779c7 (patch)
tree615582ab943b3f0c2e587668d09e7d38d6e0289c /arch/arm/mach-clps711x
parent90383e0ac2ae3df283f2b56997040f71f6d1df08 (diff)
ARM: clps711x: Moving power management of framebuffer driver to the board
This patch moves the power management for clps711x-framebuffer driver to the board code. To control we use "platform-lcd" driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-clps711x')
-rw-r--r--arch/arm/mach-clps711x/edb7211.c34
-rw-r--r--arch/arm/mach-clps711x/include/mach/hardware.h2
-rw-r--r--arch/arm/mach-clps711x/p720t.c20
3 files changed, 54 insertions, 2 deletions
diff --git a/arch/arm/mach-clps711x/edb7211.c b/arch/arm/mach-clps711x/edb7211.c
index cc32a65d698..81cc6835d7a 100644
--- a/arch/arm/mach-clps711x/edb7211.c
+++ b/arch/arm/mach-clps711x/edb7211.c
@@ -8,6 +8,8 @@
*/
#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
#include <linux/memblock.h>
#include <linux/types.h>
#include <linux/interrupt.h>
@@ -18,12 +20,17 @@
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
+#include <video/platform_lcd.h>
+
#include <mach/hardware.h>
#include "common.h"
#define VIDEORAM_SIZE SZ_128K
+#define EDB7211_LCD_DC_DC_EN CLPS711X_GPIO(3, 1)
+#define EDB7211_LCDEN CLPS711X_GPIO(3, 2)
+
#define EDB7211_CS8900_BASE (CS2_PHYS_BASE + 0x300)
#define EDB7211_CS8900_IRQ (IRQ_EINT3)
@@ -32,6 +39,28 @@ static struct resource edb7211_cs8900_resource[] __initdata = {
DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
};
+static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
+{
+ if (power) {
+ gpio_set_value(EDB7211_LCDEN, 1);
+ udelay(100);
+ gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
+ } else {
+ gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
+ udelay(100);
+ gpio_set_value(EDB7211_LCDEN, 0);
+ }
+}
+
+static struct plat_lcd_data edb7211_lcd_power_pdata = {
+ .set_power = edb7211_lcd_power_set,
+};
+
+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" },
+};
+
static struct map_desc edb7211_io_desc[] __initdata = {
{ /* Memory-mapped extra keyboard row */
.virtual = IO_ADDRESS(EP7211_PHYS_EXTKBD),
@@ -83,6 +112,11 @@ fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
static void __init edb7211_init(void)
{
+ gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
+
+ platform_device_register_data(&platform_bus, "platform-lcd", 0,
+ &edb7211_lcd_power_pdata,
+ sizeof(edb7211_lcd_power_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 5a278cb02b0..4e273f2a5cb 100644
--- a/arch/arm/mach-clps711x/include/mach/hardware.h
+++ b/arch/arm/mach-clps711x/include/mach/hardware.h
@@ -82,8 +82,6 @@
* Relevant bits in port D, which controls power to the various parts of
* the LCD on the EDB7211.
*/
-#define EDB_PD1_LCD_DC_DC_EN (1<<1)
-#define EDB_PD2_LCDEN (1<<2)
#define EDB_PD3_LCDBL (1<<3)
#endif
diff --git a/arch/arm/mach-clps711x/p720t.c b/arch/arm/mach-clps711x/p720t.c
index a58a0585e3e..34c8ee9ebb5 100644
--- a/arch/arm/mach-clps711x/p720t.c
+++ b/arch/arm/mach-clps711x/p720t.c
@@ -37,10 +37,27 @@
#include <asm/mach/map.h>
#include <mach/syspld.h>
+#include <video/platform_lcd.h>
+
#include "common.h"
#define GPIO_USERLED CLPS711X_GPIO(3, 0)
+static void p720t_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
+{
+ if (power) {
+ PLD_LCDEN = PLD_LCDEN_EN;
+ PLD_PWR |= PLD_S4_ON | PLD_S2_ON | PLD_S1_ON;
+ } else {
+ PLD_PWR &= ~(PLD_S4_ON | PLD_S2_ON | PLD_S1_ON);
+ PLD_LCDEN = 0;
+ }
+}
+
+static struct plat_lcd_data p720t_lcd_power_pdata = {
+ .set_power = p720t_lcd_power_set,
+};
+
/*
* Map the P720T system PLD. It occupies two address spaces:
* 0x10000000 and 0x10400000. We map both regions as one.
@@ -121,6 +138,9 @@ static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
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_simple("video-clps711x", 0, NULL, 0);
}