1 files changed, 512 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/creative-zenxfi2/lcd-zenxfi2.c b/firmware/target/arm/imx233/creative-zenxfi2/lcd-zenxfi2.c
new file mode 100644
index 0000000000..277c7120e1
--- /dev/null
+++ b/firmware/target/arm/imx233/creative-zenxfi2/lcd-zenxfi2.c
@@ -0,0 +1,512 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2011 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 <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 "logf.h"
+
+#ifdef HAVE_LCD_ENABLE
+static bool lcd_on;
+#endif
+static unsigned lcd_yuv_options = 0;
+
+static void setup_parameters(void)
+{
+    imx233_lcdif_reset();
+    imx233_lcdif_set_lcd_databus_width(HW_LCDIF_CTRL__LCD_DATABUS_WIDTH_18_BIT);
+    imx233_lcdif_set_word_length(HW_LCDIF_CTRL__WORD_LENGTH_18_BIT);
+    imx233_lcdif_set_timings(2, 2, 3, 3);
+}
+
+static void setup_lcd_pins(bool use_lcdif)
+{
+    if(use_lcdif)
+    {
+        imx233_set_pin_function(1, 25, PINCTRL_FUNCTION_MAIN); /* lcd_vsync */
+        imx233_set_pin_function(1, 21, PINCTRL_FUNCTION_MAIN); /* lcd_cs */
+        imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_MAIN); /* lcd_dotclk */
+        imx233_set_pin_function(1, 23, PINCTRL_FUNCTION_MAIN); /* lcd_enable */
+        imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_MAIN); /* lcd_hsync */
+        imx233_set_pin_function(1, 18, PINCTRL_FUNCTION_MAIN); /* lcd_reset */
+        imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */
+        imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_MAIN); /* lcd_d16 */
+        imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_MAIN); /* lcd_d17 */
+        imx233_set_pin_function(1, 20, PINCTRL_FUNCTION_MAIN); /* lcd_wr */
+        __REG_CLR(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} */
+    }
+    else
+    {
+        __REG_SET(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} */
+        imx233_enable_gpio_output_mask(1, 0x3ffffff, false); /* lcd_{d{0-17},reset,rs,wr,cs,dotclk,enable,hsync,vsync} */
+        imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_GPIO); /* lcd_d16 */
+        imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_GPIO); /* lcd_d17 */
+        imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */
+        imx233_set_pin_function(1, 20, PINCTRL_FUNCTION_GPIO); /* lcd_wr */
+        imx233_set_pin_function(1, 21, PINCTRL_FUNCTION_GPIO); /* lcd_cs */
+        imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_GPIO); /* lcd_dotclk */
+        imx233_set_pin_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */
+        imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_GPIO); /* lcd_hsync */
+        imx233_set_pin_function(1, 25, PINCTRL_FUNCTION_GPIO); /* lcd_vsync */
+    }
+}
+
+static void common_lcd_enable(bool enable)
+{
+    imx233_lcdif_enable(enable);
+    setup_lcd_pins(enable); /* use GPIO pins when disable */
+}
+
+static void setup_lcdif(void)
+{
+    setup_parameters();
+    common_lcd_enable(true);
+    imx233_lcdif_enable_bus_master(true);
+}
+
+static inline uint32_t encode_16_to_18(uint32_t a)
+{
+    return ((a & 0xff) << 1) | (((a >> 8) & 0xff) << 10);
+}
+
+static inline uint32_t decode_18_to_16(uint32_t a)
+{
+    return ((a >> 1) & 0xff) | ((a >> 2) & 0xff00);
+}
+
+static void setup_lcdif_clock(void)
+{
+    /* the LCD seems to work at 24Mhz, so use the xtal clock with no divider */
+    imx233_clkctrl_enable_clock(CLK_PIX, false);
+    imx233_clkctrl_set_clock_divisor(CLK_PIX, 1);
+    imx233_clkctrl_set_bypass_pll(CLK_PIX, true); /* use XTAL */
+    imx233_clkctrl_enable_clock(CLK_PIX, true);
+}
+
+static void lcd_write_reg(uint32_t reg, uint32_t data)
+{
+    uint32_t old_reg = reg;
+    /* get back to 18-bit word length */
+    imx233_lcdif_set_word_length(HW_LCDIF_CTRL__WORD_LENGTH_18_BIT);
+    reg = encode_16_to_18(reg);
+    data = encode_16_to_18(data);
+    
+    imx233_lcdif_pio_send(false, 2, &reg);
+    if(old_reg != 0 && old_reg != 0x202)
+        imx233_lcdif_pio_send(true, 2, &data);
+}
+
+#define REG_MDELAY  0xffffffff
+struct lcd_sequence_entry_t
+{
+    uint32_t reg, data;
+};
+
+static void lcd_send_sequence(struct lcd_sequence_entry_t *seq, unsigned count)
+{
+    for(;count-- > 0; seq++)
+    {
+        if(seq->reg == REG_MDELAY)
+            mdelay(seq->data);
+        else
+            lcd_write_reg(seq->reg, seq->data);
+    }
+}
+
+#define _begin_seq() static struct lcd_sequence_entry_t __seq[] = {
+#define _mdelay(a) {REG_MDELAY, a},
+#define _lcd_write_reg(a, b) {a, b},
+#define _end_seq() }; lcd_send_sequence(__seq, sizeof(__seq) / sizeof(__seq[0]));
+
+static void lcd_init_seq(void)
+{
+    _begin_seq()
+    _lcd_write_reg(0, 0)
+    _lcd_write_reg(0, 0)
+    _lcd_write_reg(0, 0)
+    _lcd_write_reg(0, 0)
+    _mdelay(100)
+    _lcd_write_reg(8, 0x808)
+    _lcd_write_reg(0x10, 0x10)
+    _lcd_write_reg(0x400, 0x6200)
+    _lcd_write_reg(0x300, 0xc0a)
+    _lcd_write_reg(0x301, 0x4c11)
+    _lcd_write_reg(0x302, 0x906)
+    _lcd_write_reg(0x303, 0x1417)
+    _lcd_write_reg(0x304, 0x3333)
+    _lcd_write_reg(0x305, 0x150d)
+    _lcd_write_reg(0x306, 0x740a)
+    _lcd_write_reg(0x307, 0x100c)
+    _lcd_write_reg(0x308, 0x60c)
+    _lcd_write_reg(0x309, 0)
+    _lcd_write_reg(0x100, 0x730)
+    _lcd_write_reg(0x101, 0x237)
+    _lcd_write_reg(0x103, 0x2b00)
+    _lcd_write_reg(0x280, 0x4000)
+    _lcd_write_reg(0x102, 0x81b0)
+    _mdelay(400)
+    _lcd_write_reg(1, 0x100)
+    _lcd_write_reg(2, 0x100)
+    _lcd_write_reg(3, 0x5028)
+    _lcd_write_reg(9, 1)
+    _lcd_write_reg(0xc, 0)
+    _lcd_write_reg(0x11, 0x202)
+    _lcd_write_reg(0x12, 0x101)
+    _lcd_write_reg(0x13, 1)
+    _lcd_write_reg(0x90, 0x8000)
+    _lcd_write_reg(0x210, 0)
+    _lcd_write_reg(0x211, 0xef)
+    _lcd_write_reg(0x212, 0)
+    _lcd_write_reg(0x213, 0x18f)
+    _lcd_write_reg(0x200, 0)
+    _lcd_write_reg(0x201, 0)
+    _lcd_write_reg(0x401, 1)
+    _lcd_write_reg(0x404, 0)
+    _mdelay(400)
+    _lcd_write_reg(7, 0x100)
+    _mdelay(400)
+    _lcd_write_reg(3, 0x1030)
+    _end_seq()
+}
+
+void lcd_init_device(void)
+{
+    setup_lcdif();
+    setup_lcdif_clock();
+
+    // reset device
+    __REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
+    mdelay(50);
+    __REG_CLR(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
+    mdelay(10);
+    __REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
+
+    lcd_init_seq();
+#ifdef HAVE_LCD_ENABLE
+    lcd_on = true;
+#endif
+}
+
+#ifdef HAVE_LCD_ENABLE
+bool lcd_active(void)
+{
+    return lcd_on;
+}
+
+static void lcd_enable_seq(bool enable)
+{
+    if(!enable)
+    {
+        _begin_seq()
+        _end_seq()
+    }
+    else
+    {
+        _begin_seq()
+        _end_seq()
+    }
+}
+
+void lcd_enable(bool enable)
+{
+    if(lcd_on == enable)
+        return;
+
+    lcd_on = enable;
+    
+    if(enable)
+        common_lcd_enable(true);
+    lcd_enable_seq(enable);
+    if(!enable)
+        common_lcd_enable(false);
+}
+#endif
+
+void lcd_update(void)
+{
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
+
+void lcd_update_rect(int x, int y, int w, int h)
+{
+#ifdef HAVE_LCD_ENABLE
+    if(!lcd_on)
+        return;
+#endif
+    /* make sure the rectangle is included in the screen */
+    x = MIN(x, LCD_WIDTH);
+    y = MIN(y, LCD_HEIGHT);
+    w = MIN(w, LCD_WIDTH - x);
+    h = MIN(h, LCD_HEIGHT - y);
+    
+    imx233_lcdif_wait_ready();
+    lcd_write_reg(0x210, x);
+    lcd_write_reg(0x211, x + w - 1);
+    lcd_write_reg(0x212, y);
+    lcd_write_reg(0x213, y + h - 1);
+    lcd_write_reg(0x200, 0);
+    lcd_write_reg(0x201, 0);
+    lcd_write_reg(0x202, 0);
+    imx233_lcdif_wait_ready();
+    imx233_lcdif_set_word_length(HW_LCDIF_CTRL__WORD_LENGTH_16_BIT);
+    imx233_lcdif_set_byte_packing_format(0xf); /* two pixels per 32-bit word */
+    imx233_lcdif_set_data_format(false, false, false); /* RGB565, don't care, don't care */
+
+    /* there are two cases here:
+     * - either width = LCD_WIDTH and we can directly memcopy a part of lcd_framebuffer to FRAME
+     *   and send it
+     * - either width != LCD_WIDTH and we have to build a contiguous copy of the rectangular area
+     *   into FRAME before sending it (which is slower and doesn't use the hardware)
+     * In all cases, FRAME just acts as a temporary buffer.
+     * NOTE It's more interesting to do a copy to FRAME in all cases since in system mode
+     * the clock runs at 24MHz which provides barely 10MB/s bandwidth compared to >100MB/s
+     * for memcopy operations
+     */
+    if(w == LCD_WIDTH)
+    {
+        memcpy((void *)FRAME, FBADDR(x,y), w * h * sizeof(fb_data));
+    }
+    else
+    {
+        for(int i = 0; i < h; i++)
+            memcpy((fb_data *)FRAME + i * w, FBADDR(x,y + i), w * sizeof(fb_data));
+    }
+    /* WARNING The LCDIF has a limitation on the vertical count ! In 16-bit packed mode
+     * (which we used, ie 16-bit per pixel, 2 pixels per 32-bit words), the v_count
+     * field must be a multiple of 2. Furthermore, it seems the lcd controller doesn't
+     * really like when both w and h are even, probably because the writes to the GRAM
+     * are done on several words and the controller requires dummy writes.
+     * The workaround is to always make sure that we send a number of pixels which is
+     * a multiple of 4 so that both the lcdif and the controller are happy. If any
+     * of w or h is odd, we will send a copy of the first pixels as dummy writes. We will
+     * send at most 3 bytes. We then send (w * h + 3) / 4 x 4 bytes.
+     */
+    if(w % 2 == 1 || h % 2 == 1)
+    {
+        /* copy three pixel after the last one */
+        for(int i = 0; i < 3; i++)
+            *((fb_data *)FRAME + w * h + i) = *((fb_data *)FRAME + i);
+        /* WARNING we need to update w and h to reflect the pixel count BUT it
+         * has no relation to w * h (it can even be 2 * prime). Hopefully, w <= 240 and
+         * h <= 320 so w * h <= 76800 and (w * h + 3) / 4 <= 38400 which fits into
+         * a 16-bit integer (horizontal count). */
+        h = (w * h + 3) / 4;
+        w = 4;
+    }
+    imx233_lcdif_dma_send((void *)FRAME_PHYS_ADDR, w, h);
+}
+
+void lcd_yuv_set_options(unsigned options)
+{
+    lcd_yuv_options = options;
+}
+
+#define YFAC    (74)
+#define RVFAC   (101)
+#define GUFAC   (-24)
+#define GVFAC   (-51)
+#define BUFAC   (128)
+
+static inline int clamp(int val, int min, int max)
+{
+    if (val < min)
+        val = min;
+    else if (val > max)
+        val = max;
+    return val;
+}
+
+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)
+{
+    const unsigned char *ysrc, *usrc, *vsrc;
+    int linecounter;
+    fb_data *dst, *row_end;
+    long z;
+
+    /* width and height must be >= 2 and an even number */
+    width &= ~1;
+    linecounter = height >> 1;
+
+    #if LCD_WIDTH >= LCD_HEIGHT
+    dst     = FBADDR(x,y);
+    row_end = dst + width;
+    #else
+    dst     = FBADDR(LCD_WIDTH - y - 1,x);
+    row_end = dst + LCD_WIDTH * width;
+    #endif
+
+    z    = stride * src_y;
+    ysrc = src[0] + z + src_x;
+    usrc = src[1] + (z >> 2) + (src_x >> 1);
+    vsrc = src[2] + (usrc - src[1]);
+
+    /* stride => amount to jump from end of last row to start of next */
+    stride -= width;
+
+    /* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
+
+    do
+    {
+        do
+        {
+            int y, cb, cr, rv, guv, bu, r, g, b;
+
+            y  = YFAC*(*ysrc++ - 16);
+            cb = *usrc++ - 128;
+            cr = *vsrc++ - 128;
+
+            rv  =            RVFAC*cr;
+            guv = GUFAC*cb + GVFAC*cr;
+            bu  = BUFAC*cb;
+
+            r = y + rv;
+            g = y + guv;
+            b = y + bu;
+
+            if ((unsigned)(r | g | b) > 64*256-1)
+            {
+                r = clamp(r, 0, 64*256-1);
+                g = clamp(g, 0, 64*256-1);
+                b = clamp(b, 0, 64*256-1);
+            }
+
+            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
+
+            #if LCD_WIDTH >= LCD_HEIGHT
+            dst++;
+            #else
+            dst += LCD_WIDTH;
+            #endif
+
+            y = YFAC*(*ysrc++ - 16);
+            r = y + rv;
+            g = y + guv;
+            b = y + bu;
+
+            if ((unsigned)(r | g | b) > 64*256-1)
+            {
+                r = clamp(r, 0, 64*256-1);
+                g = clamp(g, 0, 64*256-1);
+                b = clamp(b, 0, 64*256-1);
+            }
+
+            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
+
+            #if LCD_WIDTH >= LCD_HEIGHT
+            dst++;
+            #else
+            dst += LCD_WIDTH;
+            #endif
+        }
+        while (dst < row_end);
+
+        ysrc    += stride;
+        usrc    -= width >> 1;
+        vsrc    -= width >> 1;
+
+        #if LCD_WIDTH >= LCD_HEIGHT
+        row_end += LCD_WIDTH;
+        dst     += LCD_WIDTH - width;
+        #else
+        row_end -= 1;
+        dst     -= LCD_WIDTH*width + 1;
+        #endif
+
+        do
+        {
+            int y, cb, cr, rv, guv, bu, r, g, b;
+
+            y  = YFAC*(*ysrc++ - 16);
+            cb = *usrc++ - 128;
+            cr = *vsrc++ - 128;
+
+            rv  =            RVFAC*cr;
+            guv = GUFAC*cb + GVFAC*cr;
+            bu  = BUFAC*cb;
+
+            r = y + rv;
+            g = y + guv;
+            b = y + bu;
+
+            if ((unsigned)(r | g | b) > 64*256-1)
+            {
+                r = clamp(r, 0, 64*256-1);
+                g = clamp(g, 0, 64*256-1);
+                b = clamp(b, 0, 64*256-1);
+            }
+
+            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
+
+            #if LCD_WIDTH >= LCD_HEIGHT
+            dst++;
+            #else
+            dst += LCD_WIDTH;
+            #endif
+
+            y = YFAC*(*ysrc++ - 16);
+            r = y + rv;
+            g = y + guv;
+            b = y + bu;
+
+            if ((unsigned)(r | g | b) > 64*256-1)
+            {
+                r = clamp(r, 0, 64*256-1);
+                g = clamp(g, 0, 64*256-1);
+                b = clamp(b, 0, 64*256-1);
+            }
+
+            *dst = LCD_RGBPACK_LCD(r >> 9, g >> 8, b >> 9);
+
+            #if LCD_WIDTH >= LCD_HEIGHT
+            dst++;
+            #else
+            dst += LCD_WIDTH;
+            #endif
+        }
+        while (dst < row_end);
+
+        ysrc    += stride;
+        usrc    += stride >> 1;
+        vsrc    += stride >> 1;
+
+        #if LCD_WIDTH >= LCD_HEIGHT
+        row_end += LCD_WIDTH;
+        dst     += LCD_WIDTH - width;
+        #else
+        row_end -= 1;
+        dst     -= LCD_WIDTH*width + 1;
+        #endif
+    }
+    while (--linecounter > 0);
+
+    #if LCD_WIDTH >= LCD_HEIGHT
+    lcd_update_rect(x, y, width, height);
+    #else
+    lcd_update_rect(LCD_WIDTH - y - height, x, height, width);
+    #endif
+}