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

1 files changed, 161 insertions, 0 deletions

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);
+}