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--- linux-2.6.17-vanilla/arch/arm/mach-sa1100/jornada720.c 2006-06-18 01:49:35.000000000 +0000
+++ linux-2.6.17/arch/arm/mach-sa1100/jornada720.c 2006-07-10 17:06:11.000000000 +0000
@@ -22,11 +22,170 @@
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
+#include <asm/arch/jornada720.h>
+
+#include <linux/lcd.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
#include "generic.h"
#define JORTUCR_VAL 0x20000400
+/* Jornada 720 MCU functions */
+#define MCU_REVERSE(i) ((unsigned char)(((0x80 & i) >> 7) | ((0x40 & i) >> 5) \
+ | ((0x20 & i) >> 3) | ((0x10 & i) >> 1) | ((0x08 & i) << 1) \
+ | ((0x04 & i) << 3) | ((0x02 & i) << 5) | ((0x01 & i) << 7)))
+
+void jornada720_init_ser(void)
+{
+ int i;
+
+ GPSR = GPIO_GPIO25;
+ Ser4SSCR0 = 0x0307;
+ Ser4MCCR0 = 0;
+ Ser4SSCR1 = 0x18;
+ Ser4SSCR0 = 0x0387;
+ while (Ser4SSSR & SSSR_RNE)
+ i = Ser4SSDR;
+}
+
+int jornada720_mcu_byte(int arg_data)
+{
+ int i;
+
+ while ((Ser4SSSR & SSSR_TNF) == 0);
+ i = 0;
+ while ((GPLR & 0x400) && i++ < 400000);
+ /* wait for MCU */
+
+ if (i >= 400000) {
+ printk("jornada 720_mcu_byte: timed out\n");
+ return -1;
+ }
+ Ser4SSDR = MCU_REVERSE(arg_data) << 8;
+ udelay(100);
+ while ((Ser4SSSR & SSSR_RNE) == 0);
+ i = Ser4SSDR;
+ if (i > 0xff)
+ printk("jornada720 mcu_byte: read %x\n", i);
+ return MCU_REVERSE(i & 0xff) & 0xff;
+}
+
+
+int jornada720_mcu_start(int arg_data)
+{
+ int i;
+
+ GPCR = GPIO_GPIO25; /* clear -> enable */
+ udelay(100);
+ i = jornada720_mcu_byte(arg_data);
+ if (i != MCU_TxDummy)
+ {
+ printk("jornada720_mcu_start: sent %x got %x\n", arg_data, i);
+ for (i = 0; i < 256; i++)
+ if (jornada720_mcu_read() == -1)
+ break;
+
+ jornada720_init_ser();
+ return -1;
+ }
+
+ return 0;
+}
+
+
+void jornada720_mcu_end(void)
+{
+ udelay(100);
+ GPSR = GPIO_GPIO25; /* set */
+}
+
+void jornada720_mcu_init(void)
+{
+
+ /*int i;
+
+ if (state) {
+ PPSR &= ~PPC_LDD1;
+ PPDR &= PPC_LDD1;
+ }
+ else { */
+ PPSR |= PPC_LDD1;
+ /*}
+ return 0;*/
+}
+
+/*static int jornada720_backlight_get_power(struct backlight_device *bd)
+{
+
+ return ~(PPSR&PPC_LDD1);
+}*/
+
+static int jornada720_backlight_get_brightness(struct backlight_device *bd)
+{
+ int brightness;
+ jornada720_mcu_start(MCU_GetBrightness);
+ brightness = jornada720_mcu_read();
+ jornada720_mcu_end();
+ return brightness;
+}
+
+static int jornada720_backlight_set_brightness(struct backlight_device *bd)
+{
+ /* TODO: should it be substracted? */
+ int brightness = 255 - bd->props->brightness;
+ jornada720_mcu_start(MCU_SetBrightness);
+ jornada720_mcu_byte(brightness);
+ jornada720_mcu_end();
+ return 0;
+}
+
+static struct backlight_properties jornada720_backlight_properties = {
+ .owner = THIS_MODULE,
+ .get_brightness = jornada720_backlight_get_brightness,
+ .update_status = jornada720_backlight_set_brightness,
+ .max_brightness = 255,
+};
+
+static int jornada720_lcd_set_power(struct lcd_device *ld, int power)
+{
+ return 0;
+}
+
+static int jornada720_lcd_get_power(struct lcd_device *ld)
+{
+ return 1;
+}
+
+static int jornada720_lcd_get_contrast(struct lcd_device *ld)
+{
+ int contrast;
+
+ jornada720_mcu_start(MCU_GetContrast);
+ contrast = jornada720_mcu_read();
+ jornada720_mcu_end();
+
+ return contrast;
+}
+
+static int jornada720_lcd_set_contrast(struct lcd_device *ld, int contrast)
+{
+ jornada720_mcu_start(MCU_SetContrast);
+ jornada720_mcu_byte(contrast);
+ jornada720_mcu_end();
+ return 0;
+}
+
+static struct lcd_properties jornada720_lcd_properties = {
+ .owner = THIS_MODULE,
+ .set_power = jornada720_lcd_set_power,
+ .get_power = jornada720_lcd_get_power,
+ .set_contrast = jornada720_lcd_set_contrast,
+ .get_contrast = jornada720_lcd_get_contrast,
+ .max_contrast = 255,
+};
+
static struct resource sa1111_resources[] = {
[0] = {
.start = 0x40000000,
@@ -77,6 +236,10 @@
PPDR |= PPC_LDD3 | PPC_LDD4;
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
+
+ jornada720_mcu_init();
+ backlight_device_register("e1356fb", 0, &jornada720_backlight_properties);
+ lcd_device_register("e1356fb", 0, &jornada720_lcd_properties);
}
return ret;
}
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