Initial commit for the YP-Z5 port

The port uses the imx233 soc, it's a STMP3650 based Samsung player

Change-Id: I50b6d7e77fd292fab5ed26de87853cd5aaf9eaa4
Reviewed-on: http://gerrit.rockbox.org/490
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>

14 files changed, 1072 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/power-imx233.c b/firmware/target/arm/imx233/power-imx233.c
index af333dea59..9ad8734823 100644
--- a/firmware/target/arm/imx233/power-imx233.c
+++ b/firmware/target/arm/imx233/power-imx233.c
@@ -137,6 +137,8 @@ void imx233_power_init(void)
 #endif
     /* enable vbusvalid detection method for the dcdc (improves efficiency) */
     BF_SET(POWER_5VCTRL, VBUSVALID_5VDETECT);
+    /* disable shutdown on 5V fail */
+    BF_CLR(POWER_5VCTRL, PWDN_5VBRNOUT);
 #ifdef USE_VBUSVALID
     /* make sure VBUSVALID is unlocked */
     BF_CLR(POWER_DEBUG, VBUSVALIDPIOLOCK);
diff --git a/firmware/target/arm/imx233/samsung-ypz5/audio-target.h b/firmware/target/arm/imx233/samsung-ypz5/audio-target.h
new file mode 100644
index 0000000000..c0bee26e45
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/audio-target.h
@@ -0,0 +1,31 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef __audio_target__
+#define __audio_target__
+
+/* MUTE_ON toggles a transistor that in turns toggles a mosfet... */
+#define IMX233_AUDIO_HP_GATE_BANK 1
+#define IMX233_AUDIO_HP_GATE_PIN 22
+#define IMX233_AUDIO_HP_GATE_INVERTED
+
+#define IMX233_AUDIO_COUPLING_MODE ACM_CAP
+
+#endif /* __audio_target__ */
diff --git a/firmware/target/arm/imx233/samsung-ypz5/backlight-target.h b/firmware/target/arm/imx233/samsung-ypz5/backlight-target.h
new file mode 100644
index 0000000000..5fa2ed38f9
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/backlight-target.h
@@ -0,0 +1,28 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2013 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef BACKLIGHT_TARGET_H
+#define BACKLIGHT_TARGET_H
+
+bool _backlight_init(void);
+void _backlight_on(void);
+void _backlight_off(void);
+void _backlight_set_brightness(int brightness);
+
+#endif /* BACKLIGHT_TARGET_H */
diff --git a/firmware/target/arm/imx233/samsung-ypz5/backlight-ypz5.c b/firmware/target/arm/imx233/samsung-ypz5/backlight-ypz5.c
new file mode 100644
index 0000000000..27a7ecedfc
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/backlight-ypz5.c
@@ -0,0 +1,149 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2013 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "system.h"
+#include "lcd.h"
+#include "backlight.h"
+#include "backlight-target.h"
+#include "pinctrl-imx233.h"
+
+/**
+ * AAT3151 Backlight Controller
+ */
+
+/* Timings */
+#define TIME_OFF                500
+#define TIME_LOW                50
+#define TIME_HI                 50
+#define TIME_LAT                500
+
+/* Number of raising edges to select the particular register */
+#define D1_D4_CURRENT_E           17
+#define D1_D3_CURRENT_E           18
+#define D4_CURRENT_E              19
+#define MAX_CURRENT_E             20
+#define LOW_CURRENT_E             21
+
+/* The actual register address / number */
+#define D1_D4_CURRENT           1
+#define D1_D3_CURRENT           2
+#define D4_CURRENT              3
+#define MAX_CURRENT             4
+#define LOW_CURRENT             5
+
+/* Valid values for LOW_CURRENT register */
+#define MAX_CURRENT_20                  1
+#define MAX_CURRENT_30                  2
+#define MAX_CURRENT_15                  3
+#define MAX_CURRENT_LOW_CURRENT         4
+
+static int current_level = -1;
+
+static void create_raising_edges(int num)
+{
+    while (num--)
+    {
+        /* Setting a register takes a sufficient small amount of time,
+         * in the order of 50 ns. Thus the necessary 2 delays TIME_LOW/TIME_HI
+         * are not strictly necessary */
+        imx233_pinctrl_set_gpio(3, 13, false);
+        imx233_pinctrl_set_gpio(3, 13, true);
+    }
+}
+
+static void aat3151_write(int addr, int data)
+{
+    create_raising_edges(16 + addr);
+    udelay(TIME_LAT);
+    create_raising_edges(data);
+    udelay(TIME_LAT);
+}
+
+void _backlight_set_brightness(int level)
+{
+    /* Don't try to reset backlight if not necessary
+     *  Moreover this helps to avoid flickering when
+     *  being in some screens like USB mode and
+     *  pressing some keys / touchpad...
+     */
+    if (current_level == level) return;
+
+    /* Check for limits and adjust in case */
+    level = MIN(MAX_BRIGHTNESS_SETTING, MAX(0, level));
+
+    if (level == 0)
+    {
+        /* Set pin low for a sufficient time, puts the device into low-power consumption state
+         * In other words backlight goes off
+         */
+        imx233_pinctrl_set_gpio(3, 13, false);
+        udelay(TIME_OFF);
+    }
+    else
+    {
+        if (level > 3) {
+            /* This enables 16 levels of backlight */
+            aat3151_write(MAX_CURRENT, MAX_CURRENT_15);
+            /* Set the value according Table 1 in datasheet
+             * For MAX_CURRENT_15, the scale is from 0 mA to 15 mA in 16 steps
+             */
+            aat3151_write(D1_D3_CURRENT, 19 - level);
+        }
+        else {
+            /* This enables other 4 levels of backlight */
+            aat3151_write(MAX_CURRENT, MAX_CURRENT_LOW_CURRENT);
+            /* Set the value according Table 1 in datasheet
+             * For LOW_CURRENT, there is no "real" scale. We have scattered values.
+             * We are interested in the last 3 -> 0.5 mA; 1 mA; 2 mA
+             */
+            aat3151_write(LOW_CURRENT, 13 + level);
+        }
+    }
+    current_level = level;
+}
+
+bool _backlight_init(void)
+{
+    imx233_pinctrl_acquire(3, 13, "backlight");
+    imx233_pinctrl_set_function(3, 13, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_drive(3, 13, PINCTRL_DRIVE_4mA);
+    imx233_pinctrl_enable_gpio(3, 13, true);
+    imx233_pinctrl_set_gpio(3, 13, false);
+    return true;
+}
+
+void _backlight_on(void)
+{
+#ifdef HAVE_LCD_ENABLE
+    lcd_enable(true); /* power on lcd + visible display */
+#endif
+    /* restore the previous backlight level */
+    _backlight_set_brightness(backlight_brightness);
+}
+
+void _backlight_off(void)
+{
+    /* there is no real on/off but we can set to 0 brightness */
+    _backlight_set_brightness(0);
+#ifdef HAVE_LCD_ENABLE
+    lcd_enable(false); /* power off visible display */
+#endif
+}
diff --git a/firmware/target/arm/imx233/samsung-ypz5/button-target.h b/firmware/target/arm/imx233/samsung-ypz5/button-target.h
new file mode 100644
index 0000000000..2f94f5fb31
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/button-target.h
@@ -0,0 +1,59 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef _BUTTON_TARGET_H_
+#define _BUTTON_TARGET_H_
+
+#include <stdbool.h>
+
+#define HAS_BUTTON_HOLD
+#define IMX233_BUTTON_LRADC_CHANNEL     0
+#define IMX233_BUTTON_LRADC_HOLD_DET    BLH_GPIO
+#define BLH_GPIO_BANK   0
+#define BLH_GPIO_PIN    13
+
+#define IMX233_BUTTON_LRADC_CHANNEL 0
+
+/* Main unit's buttons */
+#define BUTTON_POWER                0x00000001
+#define BUTTON_VOL_UP               0x00000002
+#define BUTTON_VOL_DOWN             0x00000004
+/* Directional buttons by touchpad */
+#define BUTTON_LEFT                 0x00000008
+#define BUTTON_UP                   0x00000010
+#define BUTTON_RIGHT                0x00000020
+#define BUTTON_DOWN                 0x00000040
+#define BUTTON_SELECT               0x00000080
+#define BUTTON_BACK                 0x00000100
+#define BUTTON_REW                  0x00000200
+#define BUTTON_FF                   0x00000400
+
+
+#define BUTTON_MAIN (BUTTON_VOL_UP | BUTTON_VOL_DOWN | BUTTON_POWER | BUTTON_LEFT | \
+                     BUTTON_UP | BUTTON_RIGHT | BUTTON_DOWN | BUTTON_SELECT | \
+                     BUTTON_BACK | BUTTON_REW | BUTTON_FF)
+
+/* Software power-off */
+#define POWEROFF_BUTTON BUTTON_POWER
+#define POWEROFF_COUNT 10
+
+bool button_debug_screen(void);
+
+#endif /* _BUTTON_TARGET_H_ */
diff --git a/firmware/target/arm/imx233/samsung-ypz5/button-ypz5.c b/firmware/target/arm/imx233/samsung-ypz5/button-ypz5.c
new file mode 100644
index 0000000000..cee82e2e9f
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/button-ypz5.c
@@ -0,0 +1,273 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2013 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "system.h"
+#include "lcd.h"
+#include "string.h"
+#include "pinctrl-imx233.h"
+#include "power-imx233.h"
+#include "button-lradc-imx233.h"
+#include "button-target.h"
+
+#ifndef BOOTLOADER
+#include "touchscreen.h"
+#include "touchscreen-imx233.h"
+#include "button.h"
+#include "font.h"
+#include "action.h"
+#endif
+
+struct imx233_button_lradc_mapping_t imx233_button_lradc_mapping[] =
+{
+    {455, BUTTON_VOL_UP},
+    {900, BUTTON_VOL_DOWN},
+    {1410, BUTTON_BACK},
+    {1868, BUTTON_FF},
+    {2311, BUTTON_REW},
+    {2700, 0},
+    {3300, IMX233_BUTTON_LRADC_END},
+};
+
+#ifndef BOOTLOADER
+static int last_x = 0;
+static int last_y = 0;
+static bool touching = false;
+#endif /* BOOTLOADER */
+
+#ifndef BOOTLOADER
+
+/* Touchpad extra pin initialization
+ * Strange facts:
+ * 1. In the fully working sample I have, it seems that pins
+ * must be all set to low
+ * 2. In the other sample without LCD, it seems (by measurement) that
+ * not all the pins are set to low! Actually, I still need to see if
+ * touchpad works in this other sample.
+*/
+void touchpad_pin_setup(void)
+{
+    /* TX+ */
+    imx233_pinctrl_acquire(0, 25, "touchpad X+ power low");
+    imx233_pinctrl_set_function(0, 25, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_drive(0, 25, PINCTRL_DRIVE_4mA);
+    imx233_pinctrl_enable_gpio(0, 25, true);
+
+    /* TY+ */
+    imx233_pinctrl_acquire(0, 26, "touchpad Y+ power high");
+    imx233_pinctrl_set_function(0, 26, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_drive(0, 26, PINCTRL_DRIVE_4mA);
+    imx233_pinctrl_enable_gpio(0, 26, true);
+
+    /* TY- */
+    imx233_pinctrl_acquire(1, 21, "touchpad Y- power low");
+    imx233_pinctrl_set_function(1, 21, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_drive(1, 21, PINCTRL_DRIVE_4mA);
+    imx233_pinctrl_enable_gpio(1, 21, true);
+
+    /* TX- */
+    imx233_pinctrl_acquire(3, 15, "touchpad X- power high");
+    imx233_pinctrl_set_function(3, 15, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_drive(3, 15, PINCTRL_DRIVE_4mA);
+    imx233_pinctrl_enable_gpio(3, 15, true);
+
+}
+#endif /* BOOTLOADER */
+
+void button_init_device(void)
+{
+    imx233_button_lradc_init();
+#ifndef BOOTLOADER
+    touchpad_pin_setup();
+    /* Now that is powered up, proceed with touchpad initialization */
+    imx233_touchscreen_init();
+    imx233_touchscreen_enable(true);
+#endif /* BOOTLOADER */
+}
+
+bool button_hold(void)
+{
+    return imx233_button_lradc_hold();
+}
+
+/* X, Y, RadiusX, RadiusY */
+#define TOUCH_UP        2400, 1050, 650, 250
+#define TOUCH_DOWN      2057, 3320, 500, 350
+#define TOUCH_LEFT      3581, 2297, 300, 350
+#define TOUCH_RIGHT     1000, 2100, 400, 700
+#define TOUCH_CENTER    2682, 2167, 335, 276
+
+bool coord_in_radius(int x, int y, int cx, int cy, int rx, int ry)
+{
+    return ((x >= cx - rx && x <= cx + rx) && (y >= cy - ry && y <= cy + ry));
+}
+
+int button_read_device(void)
+{
+    int res = 0;
+
+    switch(imx233_power_read_pswitch())
+    {
+        case 1: res |= BUTTON_POWER; break;
+        case 3: res |= BUTTON_SELECT; break;
+    }
+
+#ifndef BOOTLOADER
+    touching = imx233_touchscreen_get_touch(&last_x, &last_y);
+    if(touching)
+    {
+        if (coord_in_radius(last_x, last_y, TOUCH_LEFT))
+        {
+            res |= BUTTON_LEFT;
+        }
+        else if (coord_in_radius(last_x, last_y, TOUCH_RIGHT))
+        {
+            res |= BUTTON_RIGHT;
+        }
+        else if (coord_in_radius(last_x, last_y, TOUCH_DOWN))
+        {
+            res |= BUTTON_DOWN;
+        }
+        else if (coord_in_radius(last_x, last_y, TOUCH_UP))
+        {
+            res |= BUTTON_UP;
+        }
+    }
+#endif /* BOOTLOADER */
+    return imx233_button_lradc_read(res);
+}
+
+#ifndef BOOTLOADER
+
+#define MAX_ENTRIES         100
+#define VIEWPORT_HEIGHT     100
+#define VIEWPORT_WIDTH      100
+#define MAX_X               3700
+#define MAX_Y               3700
+#define ADAPT_TO_VIEWPORT(cx, cy, rx, ry)       ((float)(cx) / MAX_X) * VIEWPORT_WIDTH, \
+                                                ((float)(cy) / MAX_Y) * VIEWPORT_HEIGHT, \
+                                                ((float)(rx) / MAX_X) * VIEWPORT_WIDTH, \
+                                                ((float)(ry) / MAX_Y) * VIEWPORT_HEIGHT
+static void draw_calibration_rect(int cx, int cy, int rx, int ry)
+{
+    if (coord_in_radius(last_x, last_y, cx, cy, rx, ry))
+        lcd_set_drawinfo(DRMODE_SOLID, LCD_RGBPACK(0xff, 0xff, 0xff), LCD_BLACK);
+    else
+        lcd_set_drawinfo(DRMODE_SOLID, LCD_RGBPACK(0xff, 0, 0), LCD_BLACK);
+    lcd_drawrect(ADAPT_TO_VIEWPORT(cx - rx, cy - ry, 2 * rx, 2 * ry));
+}
+
+bool button_debug_screen(void)
+{
+    int last = 0;
+    struct point_t
+    {
+        int x;
+        int y;
+    };
+    struct point_t last_entries[MAX_ENTRIES];
+    struct viewport report_vp;
+
+    memset(&report_vp, 0, sizeof(report_vp));
+    report_vp.x = (LCD_WIDTH - VIEWPORT_WIDTH) / 2;
+    report_vp.y = (LCD_HEIGHT - VIEWPORT_HEIGHT) / 2;
+    report_vp.width = VIEWPORT_WIDTH;
+    report_vp.height = VIEWPORT_HEIGHT;
+
+    lcd_setfont(FONT_SYSFIXED);
+    lcd_clear_display();
+
+    while(1)
+    {
+        int button = get_action(CONTEXT_STD, HZ / 10);
+        switch(button)
+        {
+            case ACTION_STD_OK:
+            case ACTION_STD_MENU:
+                lcd_set_viewport(NULL);
+                lcd_setfont(FONT_UI);
+                lcd_clear_display();
+                return true;
+            case ACTION_STD_CANCEL:
+                lcd_set_viewport(NULL);
+                lcd_setfont(FONT_UI);
+                lcd_clear_display();
+                return false;
+        }
+
+        lcd_set_viewport(NULL);
+        lcd_putsf(0, 1, "(%d,%d) %s", last_x, last_y, touching ? "touching!" : "");
+        lcd_putsf(0, 0, "Type %s", imx233_pinctrl_get_gpio(0, 31) ? "CAP" : "REG");
+        lcd_set_viewport(&report_vp);
+        lcd_set_drawinfo(DRMODE_SOLID, LCD_RGBPACK(0, 0, 0xff), LCD_BLACK);
+        lcd_drawrect(0, 0, 100, 100);
+        float percent_x = ((float)(last_x) / MAX_X);
+        float percent_y = ((float)(last_y) / MAX_Y);
+        if (touching)
+        {
+            lcd_set_viewport(NULL);
+            if (last < MAX_ENTRIES)
+            {
+                last_entries[last].x = last_x;
+                last_entries[last].y = last_y;
+                last++;
+                lcd_putsf(0, 17, "Recording: %d captures left", MAX_ENTRIES - last);
+            }
+            else
+            {
+                int min_x = 9999;
+                int min_y = 9999;
+                int max_x = -1;
+                int max_y = -1;
+                int median_x = 0;
+                int median_y = 0;
+                for (int i = 0; i < MAX_ENTRIES; i++)
+                {
+                    min_x = MIN(min_x, last_entries[i].x);
+                    min_y = MIN(min_y, last_entries[i].y);
+                    max_x = MAX(max_x, last_entries[i].x);
+                    max_y = MAX(max_y, last_entries[i].y);
+                    median_x += last_entries[i].x;
+                    median_y += last_entries[i].y;
+                }
+                median_x /= MAX_ENTRIES;
+                median_y /= MAX_ENTRIES;
+                lcd_putsf(0, 17, "center(%d,%d)", median_x, median_y);
+                lcd_putsf(0, 18, "radius(%d,%d)", median_x / 2, median_y / 2);
+            }
+            lcd_set_viewport(&report_vp);
+            lcd_set_drawinfo(DRMODE_SOLID, LCD_RGBPACK(0xff, 0x8c, 0), LCD_BLACK);
+            lcd_fillrect(VIEWPORT_WIDTH * percent_x, VIEWPORT_HEIGHT * percent_y, 2, 2);
+        }
+
+        /* Draw current calibration settings */
+        lcd_set_viewport(&report_vp);
+        draw_calibration_rect(TOUCH_UP);
+        draw_calibration_rect(TOUCH_DOWN);
+        draw_calibration_rect(TOUCH_CENTER);
+        draw_calibration_rect(TOUCH_LEFT);
+        draw_calibration_rect(TOUCH_RIGHT);
+
+        lcd_update();
+        yield();
+    }
+
+    return true;
+}
+#endif
diff --git a/firmware/target/arm/imx233/samsung-ypz5/debug-ypz5.c b/firmware/target/arm/imx233/samsung-ypz5/debug-ypz5.c
new file mode 100644
index 0000000000..c125eac973
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/debug-ypz5.c
@@ -0,0 +1,29 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "system.h"
+#include "button-target.h"
+#include "lcd-target.h"
+
+bool dbg_hw_target_info(void)
+{
+    return button_debug_screen() && lcd_debug_screen();
+}
diff --git a/firmware/target/arm/imx233/samsung-ypz5/fmradio-target.h b/firmware/target/arm/imx233/samsung-ypz5/fmradio-target.h
new file mode 100644
index 0000000000..66bceb4071
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/fmradio-target.h
@@ -0,0 +1,31 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef _FMRADIO_TARGET_H_
+#define _FMRADIO_TARGET_H_
+
+#define IMX233_FMRADIO_I2C  FMI_HW
+
+#define IMX233_FMRADIO_POWER    FMP_GPIO
+#define FMP_GPIO_BANK   0
+#define FMP_GPIO_PIN    10
+#define FMP_GPIO_DELAY  (HZ / 5)
+
+#endif /* _FMRADIO_TARGET_H_ */
diff --git a/firmware/target/arm/imx233/samsung-ypz5/ftl-target.h b/firmware/target/arm/imx233/samsung-ypz5/ftl-target.h
new file mode 100644
index 0000000000..cb943e34f2
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/ftl-target.h
@@ -0,0 +1,39 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 by Michael Sparmann
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __FTL_TARGET_H__
+#define __FTL_TARGET_H__
+
+#include "config.h"
+#include "inttypes.h"
+
+#ifdef BOOTLOADER
+/* Bootloaders don't need write access */
+#define FTL_READONLY
+#endif
+
+uint32_t ftl_init(void);
+uint32_t ftl_read(uint32_t sector, uint32_t count, void* buffer);
+uint32_t ftl_write(uint32_t sector, uint32_t count, const void* buffer);
+uint32_t ftl_sync(void);
+
+
+#endif
diff --git a/firmware/target/arm/imx233/samsung-ypz5/lcd-target.h b/firmware/target/arm/imx233/samsung-ypz5/lcd-target.h
new file mode 100644
index 0000000000..9993b7d731
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/lcd-target.h
@@ -0,0 +1,25 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (c) 2013 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef LCD_TARGET_H
+#define LCD_TARGET_H
+
+bool lcd_debug_screen(void);
+
+#endif /* LCD_TARGET_H */
diff --git a/firmware/target/arm/imx233/samsung-ypz5/lcd-ypz5.c b/firmware/target/arm/imx233/samsung-ypz5/lcd-ypz5.c
new file mode 100644
index 0000000000..4f7d9b88b5
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/lcd-ypz5.c
@@ -0,0 +1,294 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (c) 2013 by Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <sys/types.h> /* off_t */
+#include <string.h>
+#include "cpu.h"
+#include "system.h"
+#include "backlight-target.h"
+#include "lcd.h"
+#include "lcdif-imx233.h"
+#include "clkctrl-imx233.h"
+#include "pinctrl-imx233.h"
+#include "dcp-imx233.h"
+#include "logf.h"
+#ifndef BOOTLOADER
+#include "button.h"
+#include "font.h"
+#include "action.h"
+#endif
+#include "dma-imx233.h"
+
+#include "regs/regs-lcdif.h"
+
+/**
+ * NOTE
+ * We don't know exact LCD models nor we have datasheets for them
+ * Register function are partly guessed from the values, others are guessed from other LCD
+ * drivers and others have been confirmed studying their values
+ */
+
+static enum lcd_type_t
+{
+    LCD_TYPE_ZERO = 0,
+    LCD_TYPE_ONE = 1
+} lcd_type = LCD_TYPE_ZERO;
+
+static void lcd_write_reg(uint16_t reg, uint16_t data)
+{
+    imx233_lcdif_pio_send(false, 1, &reg);
+    if(reg != 0x22)
+        imx233_lcdif_pio_send(true, 1, &data);
+}
+
+/*
+ * The two LCD types require different initialization sequences
+ */
+void lcd_init_seq(void)
+{
+    switch (lcd_type)
+    {
+        case LCD_TYPE_ZERO:
+        {
+            lcd_write_reg(0x11, 0x1f1e);
+            lcd_write_reg(0x38, 0xf0f);
+            lcd_write_reg(0x12, 0x1101);
+            lcd_write_reg(0x13, 0x808);
+            lcd_write_reg(0x14, 0x3119);
+            lcd_write_reg(0x10, 0x1a10);
+            udelay(0xc350);
+            lcd_write_reg(0x13, 0x83b);
+            udelay(0x30d40);
+            lcd_write_reg(1, 0x90c); /* Display mode */
+            lcd_write_reg(2, 0x200);
+            lcd_write_reg(3, 0x1030);
+            lcd_write_reg(7, 5);
+            lcd_write_reg(8, 0x503);
+            lcd_write_reg(11, 0);
+            lcd_write_reg(12, 0);
+            /* Gamma control */
+            lcd_write_reg(0x30, 0x606);
+            lcd_write_reg(0x31, 0x606);
+            lcd_write_reg(0x32, 0x305);
+            lcd_write_reg(0x33, 2);
+            lcd_write_reg(0x34, 0x503);
+            lcd_write_reg(0x35, 0x606);
+            lcd_write_reg(0x36, 0x606);
+            lcd_write_reg(0x37, 0x200);
+
+            lcd_write_reg(0x11, 0x1f1e);
+            lcd_write_reg(0x38, 0xf0f);
+            /* Set initial LCD limits and RAM settings */
+            lcd_write_reg(0x40, 0); //BPP ?
+            lcd_write_reg(0x42, 0x9f00);
+            lcd_write_reg(0x43, 0);
+            lcd_write_reg(0x44, 0x7f00); /* Horizontal initial refresh zone [0 - 127] */
+            lcd_write_reg(0x45, 0x9f00); /* Vertical initial refresh zone [0 - 159] */
+
+            lcd_write_reg(14, 0x13);
+            lcd_write_reg(0xa9, 0x14);
+            lcd_write_reg(0xa7, 0x30);
+            lcd_write_reg(0xa8, 0x124);
+            lcd_write_reg(0x6f, 0x1d00);
+            lcd_write_reg(0x70, 3);
+            lcd_write_reg(7, 1);
+            lcd_write_reg(0x10, 0x1a10);
+            udelay(0x9c40);
+            lcd_write_reg(7, 0x21);
+            lcd_write_reg(7, 0x23);
+            udelay(0x9c40);
+            lcd_write_reg(7, 0x37); /* Seems to be "power on" */
+            break;
+        }
+        case LCD_TYPE_ONE:
+        {
+            lcd_write_reg(0, 1);
+            udelay(0x2710);
+            lcd_write_reg(0x11, 0x171b);
+            lcd_write_reg(0x12, 0);
+            lcd_write_reg(0x13, 0x80d);
+            lcd_write_reg(0x14, 0x18);
+            lcd_write_reg(0x10, 0x1a10);
+            udelay(0xc350);
+            lcd_write_reg(0x13, 0x81d);
+            udelay(0xc350);
+            lcd_write_reg(1, 0x90c); /* Display mode */
+            lcd_write_reg(2, 0x200);
+            lcd_write_reg(3, 0x1030);
+            lcd_write_reg(7, 5);
+            lcd_write_reg(8, 0x30a);
+            lcd_write_reg(11, 4);
+            lcd_write_reg(12, 0);
+            /* Gamma control */
+            lcd_write_reg(0x30, 0x300);
+            lcd_write_reg(0x31, 0);
+            lcd_write_reg(0x32, 0);
+            lcd_write_reg(0x33, 0x404);
+            lcd_write_reg(0x34, 0x707);
+            lcd_write_reg(0x35, 0x700);
+            lcd_write_reg(0x36, 0x703);
+            lcd_write_reg(0x37, 4);
+
+            lcd_write_reg(0x38, 0);
+            /* Set initial LCD limits and RAM settings */
+            lcd_write_reg(0x40, 0);
+            lcd_write_reg(0x42, 0x9f00); /* LCD Display Start Address Register 0 */
+            lcd_write_reg(0x43, 0); /* LCD Display Start Address Register 1 */
+            lcd_write_reg(0x44, 0x7f00); /* Horizontal initial refresh zone [0 - 127] */
+            lcd_write_reg(0x45, 0x9f00); /* Vertical initial refresh zone [0 - 159] */
+
+            lcd_write_reg(7, 1);
+            udelay(0x2710);
+            lcd_write_reg(7, 0x21);
+            lcd_write_reg(7, 0x23);
+            udelay(0x2710);
+            lcd_write_reg(7, 0x1037);
+            udelay(0x2710);
+            lcd_write_reg(7, 0x35);
+            lcd_write_reg(7, 0x36);
+            lcd_write_reg(7, 0x37);
+            udelay(10000);
+            break;
+        }
+        default:
+            break;
+    }
+}
+
+static void send_update_rect(uint8_t x, uint8_t y, uint8_t w, uint8_t h)
+{
+    /* Set horizontal refresh zone */
+    lcd_write_reg(0x44, (x | (y + w - 1) << 0x8));
+    /* Set vertical refresh zone */
+    lcd_write_reg(0x45, (y | (y + h - 1) << 0x8));
+    lcd_write_reg(0x21, x | y << 8);
+    /* Set register index to 0x22 to write screen data. 0 is mock value */
+    lcd_write_reg(0x22, 0);
+}
+
+static void setup_lcd_pins(void)
+{
+    imx233_lcdif_setup_system_pins(16);
+     /* lcd_rd */
+    imx233_pinctrl_acquire(0, 9, "lcd rd");
+    imx233_pinctrl_set_function(0, 9, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_gpio(0, 9, false);
+    /*
+     * This pin is important to know the LCD type
+     * There are two types that require two different initialization sequences
+     */
+    /* lcd_tp */
+    imx233_pinctrl_acquire(3, 12, "lcd type");
+    imx233_pinctrl_set_function(3, 12, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_enable_gpio(3, 12, false);
+    /* Sense LCD Type */
+    lcd_type = imx233_pinctrl_get_gpio(3, 12) ? LCD_TYPE_ONE : LCD_TYPE_ZERO;
+}
+
+static void setup_parameters(void)
+{
+    imx233_lcdif_init();
+    imx233_lcdif_enable(true);
+    imx233_lcdif_set_word_length(16);
+    imx233_lcdif_set_data_swizzle(false);
+    imx233_lcdif_set_timings(2, 1, 1, 1);
+    BF_WR_V(LCDIF_CTRL, MODE86, 8080_MODE);
+
+    imx233_lcdif_reset_lcd(true);
+    udelay(50);
+    imx233_lcdif_reset_lcd(false);
+    udelay(10);
+    imx233_lcdif_reset_lcd(true);
+}
+
+void lcd_init_device(void)
+{
+    /* Setup interface pins */
+    setup_lcd_pins();
+    /* Set LCD parameters */
+    setup_parameters();
+    /* Send initialization sequence to LCD */
+    lcd_init_seq();
+}
+
+struct lcdif_cmd_t
+{
+    struct apb_dma_command_t dma;
+    uint32_t ctrl0;
+    uint32_t pad[4];
+} __attribute__((packed)) CACHEALIGN_ATTR;
+
+struct lcdif_cmd_t lcdif_dma;
+void lcd_update(void)
+{
+    unsigned size = LCD_WIDTH * LCD_HEIGHT * sizeof(fb_data);
+
+    send_update_rect(0,0,LCD_WIDTH,LCD_HEIGHT);
+    /* We can safely do the transfer in a single shot, since 160 * 128 * 2 < 65k,
+     * the maximum transfer size!
+     */
+    lcdif_dma.dma.cmd |= BF_OR3(APB_CHx_CMD, CMDWORDS(1), XFER_COUNT(size), COMMAND(2));
+    lcdif_dma.ctrl0 = HW_LCDIF_CTRL & ~BM_LCDIF_CTRL_COUNT;
+    lcdif_dma.ctrl0 |= BF_OR2(LCDIF_CTRL, COUNT(size/2), DATA_SELECT(1));
+    lcdif_dma.dma.buffer = FBADDR(0,0);
+    lcdif_dma.dma.cmd |= BM_APB_CHx_CMD_SEMAPHORE;
+
+    imx233_dma_start_command(APB_LCDIF, &lcdif_dma.dma);
+    imx233_dma_wait_completion(APB_LCDIF, HZ);
+}
+
+void lcd_update_rect(int x, int y, int w, int h)
+{
+    (void)x;
+    (void)y;
+    (void)w;
+    (void)h;
+    lcd_update();
+}
+
+#ifndef BOOTLOADER
+bool lcd_debug_screen(void)
+{
+    lcd_setfont(FONT_SYSFIXED);
+
+    while(1)
+    {
+        int button = get_action(CONTEXT_STD, HZ / 10);
+        switch(button)
+        {
+            case ACTION_STD_NEXT:
+            case ACTION_STD_PREV:
+            case ACTION_STD_OK:
+            case ACTION_STD_MENU:
+                lcd_setfont(FONT_UI);
+                return true;
+            case ACTION_STD_CANCEL:
+                lcd_setfont(FONT_UI);
+                return false;
+        }
+
+        lcd_clear_display();
+        lcd_putsf(0, 0, "LCD type: %d", lcd_type);
+        lcd_update();
+        yield();
+    }
+
+    return true;
+}
+#endif
diff --git a/firmware/target/arm/imx233/samsung-ypz5/powermgmt-target.h b/firmware/target/arm/imx233/samsung-ypz5/powermgmt-target.h
new file mode 100644
index 0000000000..5d32bc5e9c
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/powermgmt-target.h
@@ -0,0 +1,37 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef POWERMGMT_TARGET_H
+#define POWERMGMT_TARGET_H
+
+#include "config.h"
+#include "powermgmt-imx233.h"
+
+#define IMX233_CHARGE_CURRENT   100
+#define IMX233_STOP_CURRENT     10
+#define IMX233_TOPOFF_TIMEOUT   (30 * 60 * HZ)
+#define IMX233_CHARGING_TIMEOUT (4 * 3600 * HZ)
+#define IMX233_DIE_TEMP_HIGH    71
+#define IMX233_DIE_TEMP_LOW     56
+#define IMX233_BATT_TEMP_SENSOR 0
+#define IMX233_BATT_TEMP_HIGH   1100
+#define IMX233_BATT_TEMP_LOW    220
+
+#endif /*  POWERMGMT_TARGET_H */
diff --git a/firmware/target/arm/imx233/samsung-ypz5/powermgmt-ypz5.c b/firmware/target/arm/imx233/samsung-ypz5/powermgmt-ypz5.c
new file mode 100644
index 0000000000..9d9ed7de99
--- /dev/null
+++ b/firmware/target/arm/imx233/samsung-ypz5/powermgmt-ypz5.c
@@ -0,0 +1,48 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "powermgmt-target.h"
+#include "power-imx233.h"
+
+
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    3400
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    3300
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    /* Sansa Fuze+ Li Ion 600mAH figured from discharge curve */
+    { 3100, 3650, 3720, 3750, 3780, 3820, 3880, 4000, 4040, 4125, 4230 },
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+    /* Sansa Fuze+ Li Ion 600mAH figured from charge curve */
+    3480, 3790, 3845, 3880, 3900, 3935, 4005, 4070, 4150, 4250, 4335
+};
diff --git a/firmware/target/arm/imx233/touchscreen-imx233.c b/firmware/target/arm/imx233/touchscreen-imx233.c
index c4d2f4d726..53d9d0e320 100644
--- a/firmware/target/arm/imx233/touchscreen-imx233.c
+++ b/firmware/target/arm/imx233/touchscreen-imx233.c
@@ -20,6 +20,9 @@
  ****************************************************************************/
 #include "touchscreen-imx233.h"
 #include "stdlib.h"
+#ifdef SAMSUNG_YPZ5
+#include "pinctrl-imx233.h"
+#endif
 
 /* Description:
  * the driver basically has 2 modes:
@@ -72,6 +75,24 @@ static void touch_channel_irq(int chan)
     process();
 }
 
+#ifdef SAMSUNG_YPZ5
+/* On this target we need to manually setup pulldown pins,
+ * using specific GPIO lines
+ */
+static void pulldown_setup(bool xminus_enable, bool yminus_enable,
+    bool xplus_enable, bool yplus_enable)
+{
+    /* TX+ */
+    imx233_pinctrl_set_gpio(0, 25, xplus_enable);
+    /* TX- */
+    imx233_pinctrl_set_gpio(3, 15, xminus_enable);
+    /* TY+ */
+    imx233_pinctrl_set_gpio(0, 26, yplus_enable);
+    /* TY- */
+    imx233_pinctrl_set_gpio(1, 21, yminus_enable);
+}
+#endif
+
 static void kick_measure(bool pull_x, bool pull_y, bool detect, int src)
 {
     if(touch_chan >= 0)
@@ -84,6 +105,9 @@ static void kick_measure(bool pull_x, bool pull_y, bool detect, int src)
     imx233_icoll_enable_interrupt(INT_SRC_LRADC_CHx(touch_chan), true);
     imx233_lradc_enable_channel_irq(touch_chan, true);
     /* setup measurement: x- pull down and x+ pull up */
+#ifdef SAMSUNG_YPZ5
+    pulldown_setup(pull_x, pull_y, pull_x, pull_y);
+#endif
     imx233_lradc_setup_touch(pull_x, pull_y, pull_x, pull_y, detect);
     imx233_lradc_enable_touch_detect_irq(false);
     imx233_lradc_enable_channel_irq(touch_chan, true);
@@ -102,6 +126,9 @@ static void enter_state(enum touch_state_t state)
     switch(state)
     {
         case TOUCH_STATE_WAIT:
+#ifdef SAMSUNG_YPZ5
+            pulldown_setup(false, false, false, false);
+#endif
             imx233_lradc_setup_touch(false, false, false, false, true);
             imx233_lradc_enable_touch_detect_irq(true);
             break;