Merge branch 'master' of http://www.denx.de/git/u-boot

Conflicts:

	board/stxxtc/Makefile

1 files changed, 190 insertions, 0 deletions

diff --git a/board/mcc200/lcd.c b/board/mcc200/lcd.c
new file mode 100644
index 0000000..b262516
--- /dev/null
+++ b/board/mcc200/lcd.c
@@ -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 */