Add HiFiMAN HM-60x target(s). FS#12319 by Andrew Ryabinin with some (small) modification by me. This also splits rk27xx lcd driver into lcdif-rk27xx and lcd controller specific part. Some modifications to the pcm driver have been made to allow using codecs in slave mode (as TDA1543 used in hifiman is slave only i2s codec).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30765 a1c6a512-1295-4272-9138-f99709370657

11 files changed, 596 insertions, 129 deletions

diff --git a/firmware/target/arm/rk27xx/adc-target.h b/firmware/target/arm/rk27xx/adc-target.h
index f6b8c98bb9..c359f3d7df 100644
--- a/firmware/target/arm/rk27xx/adc-target.h
+++ b/firmware/target/arm/rk27xx/adc-target.h
@@ -24,8 +24,8 @@
 #define NUM_ADC_CHANNELS 4
 
 #define ADC_BATTERY     0
-#define ADC_UNKNOWN_1   1
-#define ADC_UNKNOWN_2   2
+#define ADC_BUTTONS     1
+#define ADC_UNKNOWN     2
 #define ADC_VREF        3 /* that is what datasheet says */
 
 #define ADC_UNREG_POWER ADC_BATTERY /* For compatibility */
diff --git a/firmware/target/arm/rk27xx/debug-target.h b/firmware/target/arm/rk27xx/debug-target.h
index a507e96fdc..c083b9282a 100644
--- a/firmware/target/arm/rk27xx/debug-target.h
+++ b/firmware/target/arm/rk27xx/debug-target.h
@@ -24,7 +24,11 @@
 
 #include <stdbool.h>
 
+#ifdef RK27_GENERIC
 #define DEBUG_CANCEL BUTTON_VOL
+#elif defined(HM60X)
+#define DEBUG_CANCEL BUTTON_LEFT
+#endif
 
 bool dbg_hw_info(void);
 bool dbg_ports(void);
diff --git a/firmware/target/arm/rk27xx/hm60x/button-hm60x.c b/firmware/target/arm/rk27xx/hm60x/button-hm60x.c
new file mode 100644
index 0000000000..eaadaa131c
--- /dev/null
+++ b/firmware/target/arm/rk27xx/hm60x/button-hm60x.c
@@ -0,0 +1,46 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2011 Andrew Ryabinin
+ *
+ * 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 "button.h"
+#include "adc.h"
+
+void button_init_device(void) {
+    /* setup button gpio as input */
+    GPIO_PCCON &= ~(POWEROFF_BUTTON);
+}
+
+int button_read_device(void) {
+    int adc_val = adc_read(ADC_BUTTONS);
+    if (adc_val < 30) {
+        return BUTTON_UP | (GPIO_PCDR & POWEROFF_BUTTON);
+    } else if (adc_val < 250) {
+        return BUTTON_RIGHT | (GPIO_PCDR & POWEROFF_BUTTON);
+    } else if (adc_val < 380) {
+        return BUTTON_LEFT | (GPIO_PCDR & POWEROFF_BUTTON);
+    } else if (adc_val < 450) {
+        return BUTTON_DOWN | (GPIO_PCDR & POWEROFF_BUTTON);
+    } else if (adc_val < 560) {
+        return BUTTON_PLAY | (GPIO_PCDR & POWEROFF_BUTTON);
+    }
+    return (GPIO_PCDR & POWEROFF_BUTTON);
+}
diff --git a/firmware/target/arm/rk27xx/hm60x/button-target.h b/firmware/target/arm/rk27xx/hm60x/button-target.h
new file mode 100644
index 0000000000..0209e0637d
--- /dev/null
+++ b/firmware/target/arm/rk27xx/hm60x/button-target.h
@@ -0,0 +1,44 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2011 Andrew Ryabinin
+ *
+ * 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>
+#include "config.h"
+
+void button_init_device(void);
+int button_read_device(void);
+
+
+#define BUTTON_UP          0x00000001
+#define BUTTON_DOWN        0x00000004
+#define BUTTON_LEFT        0x00000008
+#define BUTTON_RIGHT       0x00000010
+#define BUTTON_PLAY        0x00000020
+
+
+#define BUTTON_REMOTE      0
+
+
+#define POWEROFF_BUTTON 0x02
+#define POWEROFF_COUNT 30
+
+#endif /* _BUTTON_TARGET_H_ */
diff --git a/firmware/target/arm/rk27xx/hm60x/lcd-hm60x.c b/firmware/target/arm/rk27xx/hm60x/lcd-hm60x.c
new file mode 100644
index 0000000000..932154da8d
--- /dev/null
+++ b/firmware/target/arm/rk27xx/hm60x/lcd-hm60x.c
@@ -0,0 +1,148 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C)  2011 Andrew Ryabinin
+ *
+ *
+ * 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 "kernel.h"
+#include "lcd.h"
+#include "system.h"
+#include "cpu.h"
+#include "lcdif-rk27xx.h"
+
+
+/* TODO */
+static void lcd_sleep(unsigned int sleep)
+{
+     (void)sleep;
+}
+
+void lcd_display_init()
+{
+    unsigned int x, y;
+
+    /* Driving ability setting */
+    lcd_write_reg(0x60, 0x00);
+    lcd_write_reg(0x61, 0x06);
+    lcd_write_reg(0x62, 0x00);
+    lcd_write_reg(0x63, 0xC8);
+
+    /* Gamma 2.2 Setting */
+    lcd_write_reg(0x40, 0x00);
+    lcd_write_reg(0x41, 0x40);
+    lcd_write_reg(0x42, 0x45);
+    lcd_write_reg(0x43, 0x01);
+    lcd_write_reg(0x44, 0x60);
+    lcd_write_reg(0x45, 0x05);
+    lcd_write_reg(0x46, 0x0C);
+    lcd_write_reg(0x47, 0xD1);
+    lcd_write_reg(0x48, 0x05);
+
+    lcd_write_reg(0x50, 0x75);
+    lcd_write_reg(0x51, 0x01);
+    lcd_write_reg(0x52, 0x67);
+    lcd_write_reg(0x53, 0x14);
+    lcd_write_reg(0x54, 0xF2);
+    lcd_write_reg(0x55, 0x07);
+    lcd_write_reg(0x56, 0x03);
+    lcd_write_reg(0x57, 0x49);
+
+    /* Power voltage setting */
+    lcd_write_reg(0x1F, 0x03);
+    lcd_write_reg(0x20, 0x00);
+    lcd_write_reg(0x24, 0x28);
+    lcd_write_reg(0x25, 0x45);
+
+    lcd_write_reg(0x23, 0x2F);
+
+    /* Power on setting */
+    lcd_write_reg(0x18, 0x44);
+    lcd_write_reg(0x21, 0x01);
+    lcd_write_reg(0x01, 0x00);
+    lcd_write_reg(0x1C, 0x03);
+    lcd_write_reg(0x19, 0x06);
+    udelay(5);
+
+    /* Display on setting */
+    lcd_write_reg(0x26, 0x84);
+    udelay(40);
+    lcd_write_reg(0x26, 0xB8);
+    udelay(40);
+    lcd_write_reg(0x26, 0xBC);
+    udelay(40);
+
+    /* Memmory access setting */
+    lcd_write_reg(0x16, 0x48);
+    /* Setup 16bit mode */
+    lcd_write_reg(0x17, 0x05);
+
+    /* Set GRAM area */
+    lcd_write_reg(0x02, 0x00);
+    lcd_write_reg(0x03, 0x00);
+    lcd_write_reg(0x04, 0x00);
+    lcd_write_reg(0x05, LCD_HEIGHT - 1);
+    lcd_write_reg(0x06, 0x00);
+    lcd_write_reg(0x07, 0x00);
+    lcd_write_reg(0x08, 0x00);
+    lcd_write_reg(0x09, LCD_WIDTH - 1);
+
+    /* Start GRAM write */
+    lcd_cmd(0x22);
+
+    for (x=0; x<LCD_WIDTH; x++)
+        for(y=0; y<LCD_HEIGHT; y++)
+            lcd_data(0x00);
+
+    lcd_sleep(0);
+}
+
+
+
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    int px = x, py = y;
+    int pxmax = x + width, pymax = y + height;
+
+    lcd_write_reg(0x03, y);
+    lcd_write_reg(0x05, pymax-1);
+    lcd_write_reg(0x07, x);
+    lcd_write_reg(0x09, pxmax-1);
+
+    lcd_cmd(0x22);
+
+    for (px=x; px<pxmax; px++)
+	for (py=y; py<pymax; py++)
+            lcd_data(lcd_framebuffer[py][px]);
+}
+
+/* Blit a YUV bitmap directly to the LCD */
+void lcd_blit_yuv(unsigned char * const src[3],
+                  int src_x, int src_y, int stride,
+                  int x, int y, int width, int height)
+{
+    (void)src;
+    (void)src_x;
+    (void)src_y;
+    (void)stride;
+    (void)x;
+    (void)y;
+    (void)width;
+    (void)height;
+}
diff --git a/firmware/target/arm/rk27xx/hm60x/power-hm60x.c b/firmware/target/arm/rk27xx/hm60x/power-hm60x.c
new file mode 100644
index 0000000000..5c2abeb121
--- /dev/null
+++ b/firmware/target/arm/rk27xx/hm60x/power-hm60x.c
@@ -0,0 +1,48 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright © 2009 Bertrik Sikken
+ *
+ * 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 <stdbool.h>
+#include "config.h"
+#include "inttypes.h"
+#include "power.h"
+#include "panic.h"
+#include "system.h"
+#include "usb_core.h"   /* for usb_charging_maxcurrent_change */
+
+void power_off(void)
+{
+
+}
+
+void power_init(void)
+{
+    GPIO_PCDR |= (1<<0);
+    GPIO_PCCON |= (1<<0);
+}
+
+unsigned int power_input_status(void)
+{
+    return (usb_detect() == USB_INSERTED) ? POWER_INPUT_MAIN_CHARGER : POWER_INPUT_NONE;
+}
+
+bool charging_state(void)
+{
+   return true;
+}
diff --git a/firmware/target/arm/rk27xx/hm60x/powermgmt-hm60x.c b/firmware/target/arm/rk27xx/hm60x/powermgmt-hm60x.c
new file mode 100644
index 0000000000..7b5b171ccb
--- /dev/null
+++ b/firmware/target/arm/rk27xx/hm60x/powermgmt-hm60x.c
@@ -0,0 +1,66 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright © 2009 Bertrik Sikken
+ *
+ * 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 "adc.h"
+#include "adc-target.h"
+#include "powermgmt.h"
+
+/*  Battery voltage calculation and discharge/charge curves for the Meizu M3.
+
+    Battery voltage is calculated under the assumption that the adc full-scale
+    readout represents 3.00V and that the battery ADC channel is fed with
+    exactly half of the battery voltage (through a resistive divider).
+    Discharge and charge curves have not been calibrated yet.
+*/
+
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    /* TODO: this is just an initial guess */
+    3400
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    /* TODO: this is just an initial guess */
+    3300
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    /* TODO: simple uncalibrated curve, linear except for first 10% */
+    { 3300, 3600, 3665, 3730, 3795, 3860, 3925, 3990, 4055, 4120, 4185 }
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+    /* TODO: simple uncalibrated curve, linear except for first 10% */
+    { 3300, 3600, 3665, 3730, 3795, 3860, 3925, 3990, 4055, 4120, 4185 };
+
+/* full-scale ADC readout (2^10) in millivolt */
+#define BATTERY_SCALE_FACTOR 6000
+
+/* Returns battery voltage from ADC [millivolts] */
+unsigned int battery_adc_voltage(void)
+{
+    return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 10;
+}
diff --git a/firmware/target/arm/rk27xx/lcdif-rk27xx.c b/firmware/target/arm/rk27xx/lcdif-rk27xx.c
new file mode 100644
index 0000000000..aeee63ee7e
--- /dev/null
+++ b/firmware/target/arm/rk27xx/lcdif-rk27xx.c
@@ -0,0 +1,161 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2011 Marcin Bukat
+ *
+ * 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 "kernel.h"
+#include "lcd.h"
+#include "system.h"
+#include "cpu.h"
+#include "lcdif-rk27xx.h"
+
+
+unsigned int lcd_data_transform(unsigned int data)
+{
+    unsigned int r, g, b;
+
+#if defined(RK27_GENERIC)
+    /* 18 bit interface */
+    r = (data & 0x0000fc00)<<8;
+    /* g = ((data & 0x00000300) >> 2) | ((data & 0x000000e0) >> 3); */
+    g = ((data & 0x00000300) << 6) | ((data & 0x000000e0) << 5);
+    b = (data & 0x00000001f) << 3;
+#elif defined(HM60X)
+    /* 16 bit interface */
+    r = (data & 0x0000f800) << 8;
+    g = (data & 0x000007e0) << 5;
+    b = (data & 0x0000001f) << 3;
+#else
+#error "Unknown target"
+#endif
+
+    return (r | g | b);
+}
+
+void lcd_cmd(unsigned int cmd)
+{
+    LCD_COMMAND = lcd_data_transform(cmd);
+}
+
+void lcd_data(unsigned int data)
+{
+    LCD_DATA = lcd_data_transform(data);
+}
+
+void lcd_write_reg(unsigned int reg, unsigned int val)
+{
+    lcd_cmd(reg);
+    lcd_data(val);
+}
+
+static void lcdctrl_bypass(unsigned int on_off)
+{
+    while (!(LCDC_STA & LCDC_MCU_IDLE));
+
+    if (on_off)
+        MCU_CTRL |= MCU_CTRL_BYPASS;
+    else
+        MCU_CTRL &= ~MCU_CTRL_BYPASS;
+}
+
+/* This part is unclear. I am unable to use buffered/FIFO based writes
+ * to lcd. Depending on settings of IF I get various patterns on display
+ * but not what I want to display apparently.
+ */
+static void lcdctrl_init(void)
+{
+    /* alpha b111
+     * stop at current frame complete
+     * MCU mode
+     * 24b RGB
+     */
+    LCDC_CTRL = ALPHA(7) | LCDC_STOP | LCDC_MCU | RGB24B;
+    MCU_CTRL = ALPHA_BASE(0x3f) | MCU_CTRL_BYPASS;
+
+    HOR_ACT = LCD_WIDTH + 3;    /* define horizonatal active region */
+    VERT_ACT = LCD_HEIGHT;       /* define vertical active region */
+    VERT_PERIOD = 0xfff;  /* CSn/WEn/RDn signal timings */
+
+    LINE0_YADDR = LINE_ALPHA_EN | 0x7fe;
+    LINE1_YADDR = LINE_ALPHA_EN | ((1 * LCD_WIDTH) - 2);
+    LINE2_YADDR = LINE_ALPHA_EN | ((2 * LCD_WIDTH) - 2);
+    LINE3_YADDR = LINE_ALPHA_EN | ((3 * LCD_WIDTH) - 2);
+
+    LINE0_UVADDR = 0x7fe + 1;
+    LINE1_UVADDR = ((1 * LCD_WIDTH) - 2 + 1);
+    LINE2_UVADDR = ((2 * LCD_WIDTH) - 2 + 1);
+    LINE3_UVADDR = ((3 * LCD_WIDTH) - 2 + 1);
+
+#if 0
+    LINE0_YADDR = 0;
+    LINE1_YADDR = (1 * LCD_WIDTH);
+    LINE2_YADDR = (2 * LCD_WIDTH);
+    LINE3_YADDR = (3 * LCD_WIDTH);
+
+    LINE0_UVADDR = 1;
+    LINE1_UVADDR = (1 * LCD_WIDTH) + 1;
+    LINE2_UVADDR = (2 * LCD_WIDTH) + 1;
+    LINE3_UVADDR = (3 * LCD_WIDTH) + 1;
+
+    START_X = 0;
+    START_Y = 0;
+    DELTA_X = 0x200; /* no scaling */
+    DELTA_Y = 0x200; /* no scaling */
+#endif
+    LCDC_INTR_MASK = INTR_MASK_LINE; /* INTR_MASK_EVENLINE; */
+}
+
+/* configure pins to drive lcd in 18bit mode */
+static void iomux_lcd(void)
+{
+    unsigned long muxa;
+
+    muxa = SCU_IOMUXA_CON & ~(IOMUX_LCD_VSYNC|IOMUX_LCD_DEN|0xff);
+    muxa |= IOMUX_LCD_D18|IOMUX_LCD_D20|IOMUX_LCD_D22|IOMUX_LCD_D17|IOMUX_LCD_D16;
+
+    SCU_IOMUXA_CON = muxa;
+    SCU_IOMUXB_CON |= IOMUX_LCD_D815;
+}
+
+void lcd_init_device()
+{
+    iomux_lcd();       /* setup pins for 16bit lcd interface */
+    lcdctrl_init();    /* basic lcdc module configuration */
+
+    lcdctrl_bypass(1); /* run in bypass mode - all writes goes directly to lcd controller */
+    lcd_display_init();
+}
+
+/* This is ugly hack. We drive lcd in bypass mode
+ * where all writes goes directly to lcd controller.
+ * This is suboptimal at best. IF module povides
+ * FIFO, internal sram buffer, hardware scaller,
+ * DMA signals, hardware alpha blending and more.
+ * BUT the fact is that I have no idea how to use
+ * this modes. Datasheet floating around is very
+ * unclean in this regard and OF uses ackward
+ * lcd update routines which are hard to understand.
+ * Moreover OF sets some bits in IF module registers
+ * which are referred as reseved in datasheet.
+ */
+void lcd_update()
+{
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
diff --git a/firmware/target/arm/rk27xx/lcdif-rk27xx.h b/firmware/target/arm/rk27xx/lcdif-rk27xx.h
new file mode 100644
index 0000000000..caf97c8e94
--- /dev/null
+++ b/firmware/target/arm/rk27xx/lcdif-rk27xx.h
@@ -0,0 +1,11 @@
+#ifndef _LCDIF_RK27XX_H
+#define _LCDIF_RK27XX_H
+
+unsigned int lcd_data_transform(unsigned int data);
+
+void lcd_cmd(unsigned int cmd);
+void lcd_data(unsigned int data);
+void lcd_write_reg(unsigned int reg, unsigned int val);
+void lcd_display_init(void);
+
+#endif /* _LCDIF_RK27XX_H */
diff --git a/firmware/target/arm/rk27xx/pcm-rk27xx.c b/firmware/target/arm/rk27xx/pcm-rk27xx.c
index b8ae56adaf..80a8d462ea 100644
--- a/firmware/target/arm/rk27xx/pcm-rk27xx.c
+++ b/firmware/target/arm/rk27xx/pcm-rk27xx.c
@@ -8,6 +8,7 @@
  * $Id$
  *
  * Copyright (C) 2011 Marcin Bukat
+ * Copyright (C) 2011 Andrew Ryabinin
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -179,13 +180,65 @@ static void i2s_init(void)
               (0<<2)  |  /* normal operation */
 #ifdef CODEC_SLAVE
               (1<<1)  |  /* start Tx (master mode) */
-              (1<<0);    /* start Rx (master mode) */
+              (0<<0);    /* do not start Rx (master mode) */
+                         /* setting Rx bit to 1 result in choppy audio */
 #else
               (0<<1)  |  /* not used in slave mode */
               (0<<0);    /* not used in slave mode */
 #endif
 }
 
+#ifdef CODEC_SLAVE
+/* When codec is slave we need to setup i2s MCLK clock using codec pll.
+ * The MCLK frequency is 256*codec frequency as i2s setup is:
+ * LRCK/SCLK = 64 and MCLK/SCLK = 4 (see i2s_init() for reference)
+ *
+ * PLL output frequency:
+ * Fout = ((Fref / (CLKR+1)) * (CLKF+1)) / (CLKOD+1)
+ * Fref = 24 MHz
+ */
+static void set_codec_freq(unsigned int freq)
+{
+    long timeout;
+
+    /* {CLKR, CLKF, CLKOD, CODECPLL_DIV} */
+    static const unsigned int pcm_freq_params[HW_NUM_FREQ][4] = 
+    {
+	[HW_FREQ_96] = {24, 255, 4, 1},
+	[HW_FREQ_48] = {24, 127, 4, 1},
+	[HW_FREQ_44] = {24, 293, 4, 4},
+	[HW_FREQ_32] = {24, 127, 4, 2},
+	[HW_FREQ_24] = {24, 127, 4, 3},
+	[HW_FREQ_22] = {24, 146, 4, 4},
+	[HW_FREQ_16] = {24, 127, 5, 4},
+	[HW_FREQ_12] = {24, 127, 4, 7},
+	[HW_FREQ_11] = {24, 146, 4, 9},
+	[HW_FREQ_8]  = {24, 127, 5, 9},
+    };
+    /* select divider output from codec pll */
+    SCU_DIVCON1 &= ~((1<<9) | (0xF<<5));
+    SCU_DIVCON1 |= (pcm_freq_params[freq][3]<<5);
+
+    /* Codec PLL power up */
+    SCU_PLLCON3 &= ~(1<<22);
+
+    SCU_PLLCON3 = (1<<24) |    /* Saturation behavior enable */
+                  (1<<23) |    /* Enable fast locking circuit */
+	          (pcm_freq_params[freq][0]<<16) | /* CLKR factor */
+	          (pcm_freq_params[freq][1]<<4)  | /* CLKF factor */
+	          (pcm_freq_params[freq][2]<<1) ; /* CLKOD factor */
+
+/* wait for CODEC PLL lock with 10 ms timeout
+ * datasheet states that pll lock should take approx. 0.3 ms
+ */
+    timeout = current_tick + (HZ/100);
+    while (!(SCU_STATUS & (1<<2)))
+        if (TIME_AFTER(current_tick, timeout))
+            break;
+
+}
+#endif
+
 void pcm_play_dma_init(void)
 {
     /* unmask HDMA interrupt in INTC */
@@ -204,8 +257,11 @@ void pcm_play_dma_postinit(void)
 
 void pcm_dma_apply_settings(void)
 {
-    /* I2S module runs in slave mode */
-    return;
+#ifdef CODEC_SLAVE
+    set_codec_freq(pcm_fsel);
+#endif
+
+    audiohw_set_frequency(pcm_fsel);
 }
 
 size_t pcm_get_bytes_waiting(void)
diff --git a/firmware/target/arm/rk27xx/lcd-rk27xx.c b/firmware/target/arm/rk27xx/rk27generic/lcd-rk27generic.c
index fda95e3174..b184630ebe 100644
--- a/firmware/target/arm/rk27xx/lcd-rk27xx.c
+++ b/firmware/target/arm/rk27xx/rk27generic/lcd-rk27generic.c
@@ -25,7 +25,9 @@
 #include "system.h"
 #include "cpu.h"
 #include "spfd5420a.h"
+#include "lcdif-rk27xx.h"
 
+/* TODO: convert to udelay() */
 static inline void delay_nop(int cycles)
 {
     asm volatile ("1: subs %[n], %[n], #1     \n\t"
@@ -34,17 +36,6 @@ static inline void delay_nop(int cycles)
                   : [n] "r" (cycles));
 }
 
-static unsigned int lcd_data_transform(unsigned int data)
-{
-    /* 18 bit interface */
-    unsigned int r, g, b;
-    r = (data & 0x0000fc00)<<8;
-    /* g = ((data & 0x00000300) >> 2) | ((data & 0x000000e0) >> 3); */
-    g = ((data & 0x00000300) << 6) | ((data & 0x000000e0) << 5);
-    b = (data & 0x00000001f) << 3;
-
-    return (r | g | b);
-}
 
 /* converts RGB565 pixel into internal lcd bus format */
 static unsigned int lcd_pixel_transform(unsigned short rgb565)
@@ -57,93 +48,8 @@ static unsigned int lcd_pixel_transform(unsigned short rgb565)
     return r<<19 | g<<10 | b<<3;
 }
 
-static void lcd_cmd(unsigned int cmd)
-{
-    LCD_COMMAND = lcd_data_transform(cmd);
-}
-
-static void lcd_data(unsigned int data)
-{
-    LCD_DATA = lcd_data_transform(data);
-}
-
-static void lcd_write_reg(unsigned int reg, unsigned int val)
-{
-    lcd_cmd(reg);
-    lcd_data(val);
-}
-
-static void lcdctrl_bypass(unsigned int on_off)
-{
-    while (!(LCDC_STA & LCDC_MCU_IDLE));
-
-    if (on_off)
-        MCU_CTRL |= MCU_CTRL_BYPASS;
-    else
-        MCU_CTRL &= ~MCU_CTRL_BYPASS;
-}
-
-/* This part is unclear. I am unable to use buffered/FIFO based writes
- * to lcd. Depending on settings of IF I get various patterns on display
- * but not what I want to display apparently.
- */
-static void lcdctrl_init(void)
-{
-    /* alpha b111
-     * stop at current frame complete
-     * MCU mode
-     * 24b RGB
-     */
-    LCDC_CTRL = ALPHA(7) | LCDC_STOP | LCDC_MCU | RGB24B;
-    MCU_CTRL = ALPHA_BASE(0x3f) | MCU_CTRL_BYPASS;
-
-    HOR_ACT = 400 + 3;    /* define horizonatal active region */
-    VERT_ACT = 240;       /* define vertical active region */
-    VERT_PERIOD = 0xfff;  /* CSn/WEn/RDn signal timings */
-
-    LINE0_YADDR = LINE_ALPHA_EN | 0x7fe;
-    LINE1_YADDR = LINE_ALPHA_EN | ((1 * 400) - 2);
-    LINE2_YADDR = LINE_ALPHA_EN | ((2 * 400) - 2);
-    LINE3_YADDR = LINE_ALPHA_EN | ((3 * 400) - 2);
-
-    LINE0_UVADDR = 0x7fe + 1;
-    LINE1_UVADDR = ((1 * 400) - 2 + 1);
-    LINE2_UVADDR = ((2 * 400) - 2 + 1);
-    LINE3_UVADDR = ((3 * 400) - 2 + 1);
-
-#if 0
-    LINE0_YADDR = 0;
-    LINE1_YADDR = (1 * 400);
-    LINE2_YADDR = (2 * 400);
-    LINE3_YADDR = (3 * 400);
-
-    LINE0_UVADDR = 1;
-    LINE1_UVADDR = (1 * 400) + 1;
-    LINE2_UVADDR = (2 * 400) + 1;
-    LINE3_UVADDR = (3 * 400) + 1;
-
-    START_X = 0;
-    START_Y = 0;
-    DELTA_X = 0x200; /* no scaling */
-    DELTA_Y = 0x200; /* no scaling */
-#endif
-    LCDC_INTR_MASK = INTR_MASK_LINE; /* INTR_MASK_EVENLINE; */
-}
-
-/* configure pins to drive lcd in 18bit mode */
-static void iomux_lcd(void)
-{
-    unsigned long muxa;
-
-    muxa = SCU_IOMUXA_CON & ~(IOMUX_LCD_VSYNC|IOMUX_LCD_DEN|0xff);
-    muxa |= IOMUX_LCD_D18|IOMUX_LCD_D20|IOMUX_LCD_D22|IOMUX_LCD_D17|IOMUX_LCD_D16;
-
-    SCU_IOMUXA_CON = muxa;
-    SCU_IOMUXB_CON |= IOMUX_LCD_D815;
-}
-
 /* not tested */
-static void lcd_sleep(unsigned int sleep)
+static void lcd_sleep(bool sleep)
 {
     if (sleep)
     {
@@ -165,15 +71,10 @@ static void lcd_sleep(unsigned int sleep)
     lcd_cmd(GRAM_WRITE);
 }
 
-void lcd_init_device()
+void lcd_display_init()
 {
     unsigned int x, y;
 
-    iomux_lcd();       /* setup pins for 18bit lcd interface */
-    lcdctrl_init();    /* basic lcdc module configuration */
-
-    lcdctrl_bypass(1); /* run in bypass mode - all writes goes directly to lcd controller */
-
     lcd_write_reg(RESET, 0x0001);
     delay_nop(10000);
     lcd_write_reg(RESET, 0x0000);
@@ -265,31 +166,13 @@ void lcd_init_device()
     /* clear screen */
     lcd_cmd(GRAM_WRITE);
 
-    for (x=0; x<400; x++)
-        for(y=0; y<240; y++)
+    for (x=0; x<LCD_WIDTH; x++)
+        for(y=0; y<LCD_HEIGHT; y++)
             lcd_data(0x000000);
 
-    lcd_sleep(0);
+    lcd_sleep(false);
 }
 
-/* This is ugly hack. We drive lcd in bypass mode
- * where all writes goes directly to lcd controller.
- * This is suboptimal at best. IF module povides
- * FIFO, internal sram buffer, hardware scaller,
- * DMA signals, hardware alpha blending and more.
- * BUT the fact is that I have no idea how to use
- * this modes. Datasheet floating around is very
- * unclean in this regard and OF uses ackward
- * lcd update routines which are hard to understand.
- * Moreover OF sets some bits in IF module registers
- * which are referred as reseved in datasheet.
- */
-void lcd_update()
-{
-    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
-}
-
-
 void lcd_update_rect(int x, int y, int width, int height)
 {
     int px = x, py = y;