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Diffstat (limited to 'firmware/target/hosted/sonynwz/lcd-nwz.c')
-rw-r--r--firmware/target/hosted/sonynwz/lcd-nwz.c200
1 files changed, 200 insertions, 0 deletions
diff --git a/firmware/target/hosted/sonynwz/lcd-nwz.c b/firmware/target/hosted/sonynwz/lcd-nwz.c
new file mode 100644
index 0000000000..bfcde3a76a
--- /dev/null
+++ b/firmware/target/hosted/sonynwz/lcd-nwz.c
@@ -0,0 +1,200 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ *
+ * Copyright (C) 2016 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 <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <linux/fb.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include "lcd.h"
+#include "lcd-target.h"
+#include "backlight-target.h"
+
+static int fb_fd = 0;
+fb_data *nwz_framebuffer = 0; /* global variable, see lcd-target.h */
+enum
+{
+ FB_MP200, /* MP200 fb driver */
+ FB_EMXX, /* EMXX fb driver */
+ FB_OTHER, /* unknown */
+}nwz_fb_type;
+
+void identify_fb(const char *id)
+{
+ if(strcmp(id, "MP200 FB") == 0)
+ nwz_fb_type = FB_MP200;
+ else if(strcmp(id, "EMXX FB") == 0)
+ nwz_fb_type = FB_EMXX;
+ else
+ nwz_fb_type = FB_OTHER;
+ printf("lcd: fb id = '%s -> type = %d\n", id, nwz_fb_type);
+}
+
+/* select which page (0 or 1) to display, disable DSP, transparency and rotation */
+static int nwz_fb_set_page(int page)
+{
+ /* set page mode to no transparency and no rotation */
+ struct nwz_fb_image_info mode_info;
+ mode_info.tc_enable = 0;
+ mode_info.t_color = 0;
+ mode_info.alpha = 0;
+ mode_info.rot = 0;
+ mode_info.page = page;
+ mode_info.update = NWZ_FB_ONLY_2D_MODE;
+ if(ioctl(fb_fd, NWZ_FB_UPDATE, &mode_info) < 0)
+ return -1;
+ return 0;
+}
+
+/* make sure framebuffer is in standard state so rendering works */
+static int nwz_fb_set_standard_mode(void)
+{
+ /* disable timer (apparently useless with LCD) */
+ struct nwz_fb_update_timer update_timer;
+ update_timer.timerflag = NWZ_FB_TIMER_OFF;
+ update_timer.timeout = NWZ_FB_DEFAULT_TIMEOUT;
+ /* we don't check the result of the next ioctl() because it will fail in
+ * newer version of the driver, where the timer disapperared. */
+ ioctl(fb_fd, NWZ_FB_UPDATE_TIMER, &update_timer);
+ return nwz_fb_set_page(0);
+}
+
+void backlight_hw_brightness(int brightness)
+{
+ struct nwz_fb_brightness bl;
+ bl.level = brightness; /* brightness level: 0-5 */
+ bl.step = 25; /* number of hardware steps to do when changing: 1-100 (smooth transition) */
+ bl.period = NWZ_FB_BL_MIN_PERIOD; /* period in ms between steps when changing: >=10 */
+
+ ioctl(fb_fd, nwz_fb_type == FB_MP200 ? NWZ_FB_SET_BRIGHTNESS_MP200 : NWZ_FB_SET_BRIGHTNESS_EMXX, &bl);
+}
+
+bool backlight_hw_init(void)
+{
+ backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
+ return true;
+}
+
+void backlight_hw_on(void)
+{
+#ifdef HAVE_LCD_ENABLE
+ lcd_enable(true); /* power on lcd + visible display */
+#endif
+ /* don't do anything special, the core will set the brightness */
+}
+
+void backlight_hw_off(void)
+{
+ /* there is no real on/off but we can set to 0 brightness */
+ backlight_hw_brightness(0);
+#ifdef HAVE_LCD_ENABLE
+ lcd_enable(false); /* power off visible display */
+#endif
+}
+
+void lcd_shutdown(void)
+{
+ munmap(nwz_framebuffer, FRAMEBUFFER_SIZE);
+ close(fb_fd);
+}
+
+void lcd_init_device(void)
+{
+ fb_fd = open("/dev/fb/0", O_RDWR);
+ if(fb_fd < 0)
+ {
+ perror("Cannot open framebuffer");
+ exit(0);
+ }
+
+ /* get fixed and variable information */
+ struct fb_fix_screeninfo finfo;
+ if(ioctl(fb_fd, FBIOGET_FSCREENINFO, &finfo) < 0)
+ {
+ perror("Cannot read framebuffer fixed information");
+ exit(0);
+ }
+ identify_fb(finfo.id);
+ struct fb_var_screeninfo vinfo;
+ if(ioctl(fb_fd, FBIOGET_VSCREENINFO, &vinfo) < 0)
+ {
+ perror("Cannot read framebuffer variable information");
+ exit(0);
+ }
+ /* check resolution and framebuffer size */
+ if(vinfo.xres != LCD_WIDTH || vinfo.yres != LCD_HEIGHT || vinfo.bits_per_pixel != LCD_DEPTH)
+ {
+ printf("Unexpected framebuffer resolution: %dx%dx%d\n", vinfo.xres,
+ vinfo.yres, vinfo.bits_per_pixel);
+ exit(0);
+ }
+ /* Note: we use a framebuffer size of width*height*bbp. We cannot trust the
+ * values returned by the driver for line_length */
+
+ /* map framebuffer */
+ nwz_framebuffer = mmap(0, FRAMEBUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fb_fd, 0);
+ if((void *)nwz_framebuffer == (void *)-1)
+ {
+ perror("Cannot map framebuffer");
+ fflush(stdout);
+ execlp("/usr/local/bin/SpiderApp.of", "SpiderApp", NULL);
+ exit(0);
+ }
+ /* make sure rendering state is correct */
+ nwz_fb_set_standard_mode();
+}
+
+static void redraw(void)
+{
+ nwz_fb_set_page(0);
+}
+
+extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
+ int width, int height);
+
+void lcd_update(void)
+{
+ /* Copy the Rockbox framebuffer to the second framebuffer */
+ lcd_copy_buffer_rect(LCD_FRAMEBUF_ADDR(0, 0), FBADDR(0,0),
+ LCD_WIDTH*LCD_HEIGHT, 1);
+ redraw();
+}
+
+void lcd_update_rect(int x, int y, int width, int height)
+{
+ fb_data *dst = LCD_FRAMEBUF_ADDR(x, y);
+ fb_data * src = FBADDR(x,y);
+
+ /* Copy part of the Rockbox framebuffer to the second framebuffer */
+ if (width < LCD_WIDTH)
+ {
+ /* Not full width - do line-by-line */
+ lcd_copy_buffer_rect(dst, src, width, height);
+ }
+ else
+ {
+ /* Full width - copy as one line */
+ lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
+ }
+ redraw();
+}