|
|
@@ -0,0 +1,190 @@
|
|
|
+/*
|
|
|
+ * (C) Copyright 2006
|
|
|
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
|
+ *
|
|
|
+ * 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 program is distributed in the hope that it will be useful,
|
|
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
+ * GNU General Public License for more details.
|
|
|
+ *
|
|
|
+ * You should have received a copy of the GNU General Public License
|
|
|
+ * along with this program; if not, write to the Free Software
|
|
|
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
|
+ * MA 02111-1307 USA
|
|
|
+ */
|
|
|
+
|
|
|
+#include <common.h>
|
|
|
+#include <lcd.h>
|
|
|
+#include <mpc5xxx.h>
|
|
|
+
|
|
|
+#ifdef CONFIG_LCD
|
|
|
+
|
|
|
+#define SWAPPED_LCD
|
|
|
+/*
|
|
|
+ * The name of the device used for communication
|
|
|
+ * with the PSoC.
|
|
|
+ */
|
|
|
+#define PSOC_PSC MPC5XXX_PSC2
|
|
|
+#define PSOC_BAUD 500000UL
|
|
|
+
|
|
|
+#define RTS_ASSERT 1
|
|
|
+#define RTS_NEGATE 0
|
|
|
+#define CTS_ASSERT 1
|
|
|
+#define CTS_NEGATE 0
|
|
|
+
|
|
|
+/*
|
|
|
+ * Dimensions in pixels
|
|
|
+ */
|
|
|
+#define LCD_WIDTH 160
|
|
|
+#define LCD_HEIGHT 100
|
|
|
+
|
|
|
+/*
|
|
|
+ * Dimensions in bytes
|
|
|
+ */
|
|
|
+#define LCD_BUF_SIZE ((LCD_WIDTH*LCD_HEIGHT)>>3)
|
|
|
+
|
|
|
+#if LCD_BPP != LCD_MONOCHROME
|
|
|
+#error "MCC200 support only monochrome displays (1 bpp)!"
|
|
|
+#endif
|
|
|
+
|
|
|
+#define PSOC_RETRIES 10 /* each of PSOC_WAIT_TIME */
|
|
|
+#define PSOC_WAIT_TIME 10 /* usec */
|
|
|
+
|
|
|
+DECLARE_GLOBAL_DATA_PTR;
|
|
|
+
|
|
|
+/*
|
|
|
+ * LCD information
|
|
|
+ */
|
|
|
+vidinfo_t panel_info = {
|
|
|
+ LCD_WIDTH, LCD_HEIGHT, LCD_BPP
|
|
|
+};
|
|
|
+
|
|
|
+int lcd_line_length;
|
|
|
+
|
|
|
+int lcd_color_fg;
|
|
|
+int lcd_color_bg;
|
|
|
+
|
|
|
+/*
|
|
|
+ * Frame buffer memory information
|
|
|
+ */
|
|
|
+void *lcd_base; /* Start of framebuffer memory */
|
|
|
+void *lcd_console_address; /* Start of console buffer */
|
|
|
+
|
|
|
+short console_col = 0;
|
|
|
+short console_row = 0;
|
|
|
+
|
|
|
+/*
|
|
|
+ * The device we use to communicate with PSoC
|
|
|
+ */
|
|
|
+int serial_inited = 0;
|
|
|
+
|
|
|
+/*
|
|
|
+ * Exported functions
|
|
|
+ */
|
|
|
+void lcd_initcolregs (void);
|
|
|
+void lcd_ctrl_init (void *lcdbase);
|
|
|
+void lcd_enable (void);
|
|
|
+
|
|
|
+/*
|
|
|
+ * Imported functions to support the PSoC protocol
|
|
|
+ */
|
|
|
+extern int serial_init_dev (unsigned long dev_base);
|
|
|
+extern void serial_setrts_dev (unsigned long dev_base, int s);
|
|
|
+extern int serial_getcts_dev (unsigned long dev_base);
|
|
|
+extern void serial_putc_raw_dev(unsigned long dev_base, const char c);
|
|
|
+
|
|
|
+/*
|
|
|
+ * Just stubs for our driver, needed for compiling compabilty with
|
|
|
+ * the common LCD driver code.
|
|
|
+ */
|
|
|
+void lcd_initcolregs (void)
|
|
|
+{
|
|
|
+}
|
|
|
+
|
|
|
+void lcd_ctrl_init (void *lcdbase)
|
|
|
+{
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Function sends the contents of the frame-buffer to the LCD
|
|
|
+ */
|
|
|
+void lcd_enable (void)
|
|
|
+{
|
|
|
+ int i, retries, fb_size;
|
|
|
+
|
|
|
+ if (!serial_inited) {
|
|
|
+ unsigned long baud;
|
|
|
+
|
|
|
+ baud = gd->baudrate;
|
|
|
+ gd->baudrate = PSOC_BAUD;
|
|
|
+ serial_init_dev(PSOC_PSC);
|
|
|
+ gd->baudrate = baud;
|
|
|
+ serial_setrts_dev (PSOC_PSC, RTS_ASSERT);
|
|
|
+ serial_inited = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Implement PSoC communication protocol:
|
|
|
+ * 1. Assert RTS, wait CTS assertion
|
|
|
+ * 2. Transmit data
|
|
|
+ * 3. Negate RTS, wait CTS negation
|
|
|
+ */
|
|
|
+
|
|
|
+ /* 1 */
|
|
|
+ serial_setrts_dev (PSOC_PSC, RTS_ASSERT);
|
|
|
+ for (retries = PSOC_RETRIES; retries; retries--) {
|
|
|
+ if (serial_getcts_dev(PSOC_PSC) == CTS_ASSERT)
|
|
|
+ break;
|
|
|
+ udelay (PSOC_WAIT_TIME);
|
|
|
+ }
|
|
|
+ if (!retries) {
|
|
|
+ printf ("%s Error: PSoC doesn't respond on "
|
|
|
+ "RTS ASSERT\n", __FUNCTION__);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* 2 */
|
|
|
+ fb_size = panel_info.vl_row * (panel_info.vl_col >> 3);
|
|
|
+
|
|
|
+#if !defined(SWAPPED_LCD)
|
|
|
+ for (i=0; i<fb_size; i++) {
|
|
|
+ serial_putc_raw_dev (PSOC_PSC, ((char *)lcd_base)[i]);
|
|
|
+ }
|
|
|
+#else
|
|
|
+ {
|
|
|
+ int x, y, pwidth;
|
|
|
+ char *p = (char *)lcd_base;
|
|
|
+
|
|
|
+ pwidth = ((panel_info.vl_col+7) >> 3);
|
|
|
+ for (y=0; y<panel_info.vl_row; y++) {
|
|
|
+ i = y * pwidth;
|
|
|
+ for (x=0; x<pwidth; x+=5) {
|
|
|
+ serial_putc_raw_dev (PSOC_PSC, (p[i+x+2]<<4 & 0xF0) | (p[i+x+3]>>4 & 0x0F));
|
|
|
+ serial_putc_raw_dev (PSOC_PSC, (p[i+x+3]<<4 & 0xF0) | (p[i+x+4]>>4 & 0x0F));
|
|
|
+ serial_putc_raw_dev (PSOC_PSC, (p[i+x+4]<<4 & 0xF0) | (p[i+x]>>4 & 0x0F));
|
|
|
+ serial_putc_raw_dev (PSOC_PSC, (p[i+x]<<4 & 0xF0) | (p[i+x+1]>>4 & 0x0F));
|
|
|
+ serial_putc_raw_dev (PSOC_PSC, (p[i+x+1]<<4 & 0xF0) | (p[i+x+2]>>4 & 0x0F));
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* 3 */
|
|
|
+ serial_setrts_dev (PSOC_PSC, RTS_NEGATE);
|
|
|
+ for (retries = PSOC_RETRIES; retries; retries--) {
|
|
|
+ if (serial_getcts_dev(PSOC_PSC) == CTS_NEGATE)
|
|
|
+ break;
|
|
|
+ udelay (PSOC_WAIT_TIME);
|
|
|
+ }
|
|
|
+ if (!retries) {
|
|
|
+ printf ("%s Error: PSoC doesn't respond on "
|
|
|
+ "RTS NEGATE\n", __FUNCTION__);
|
|
|
+ }
|
|
|
+
|
|
|
+ return;
|
|
|
+}
|
|
|
+#endif /* CONFIG_LCD */
|
Wolfgang Denk