[people/ms/u-boot.git] / board / mcc200 / lcd.c

/*
 * (C) Copyright 2006
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <lcd.h>
#include <mpc5xxx.h>
#include <malloc.h>

#ifdef CONFIG_LCD

#undef SWAPPED_LCD /* For the previous h/w version */
/*
 *  The name of the device used for communication
 * with the PSoC.
 */
#define PSOC_PSC	MPC5XXX_PSC2
#define PSOC_BAUD	230400UL

#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 */

#include <video_font.h>
#define FONT_WIDTH	VIDEO_FONT_WIDTH

DECLARE_GLOBAL_DATA_PTR;

/*
 * LCD information
 */
vidinfo_t panel_info = {
	LCD_WIDTH, LCD_HEIGHT, LCD_BPP
};


/*
 *  The device we use to communicate with PSoC
 */
int serial_inited = 0;

/*
 *  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 *)gd->fb_base)[i]);
	}
#else
    {
	int x, y, pwidth;
	char *p = (char *)gd->fb_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);
	}

	return;
}
#ifdef CONFIG_PROGRESSBAR

void show_progress (int size, int tot)
{
	int cnt;
	int i;
	static int rc = 0;

	rc += size;

	cnt = ((LCD_WIDTH/FONT_WIDTH) * rc) / tot;

	rc -= (cnt * tot) / (LCD_WIDTH/FONT_WIDTH);

	for (i = 0; i < cnt; i++) {
		lcd_putc(0xdc);
	}

	if (cnt) {
		lcd_enable(); /* MCC200-specific - send the framebuffer to PSoC */
	}
}

#endif

int bmp_display(ulong addr, int x, int y)
{
	int ret;
	bmp_image_t *bmp = (bmp_image_t *)addr;

	if (!bmp) {
		printf("There is no valid bmp file at the given address\n");
		return 1;
	}

	ret = lcd_display_bitmap((ulong)bmp, x, y);

	if ((unsigned long)bmp != addr)
		free(bmp);

	return ret;
}

#endif /* CONFIG_LCD */
Commit	Line	Data
e8143e72 WD	1	/*
	2	* (C) Copyright 2006
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
e8143e72 WD	6	*/
	7
	8	#include <common.h>
	9	#include <lcd.h>
	10	#include <mpc5xxx.h>
bfdcc65e	11	#include <malloc.h>
e8143e72 WD	12
	13	#ifdef CONFIG_LCD
	14
638dd145	15	#undef SWAPPED_LCD /* For the previous h/w version */
e8143e72 WD	16	/*
	17	* The name of the device used for communication
	18	* with the PSoC.
	19	*/
	20	#define PSOC_PSC MPC5XXX_PSC2
638dd145	21	#define PSOC_BAUD 230400UL
e8143e72 WD	22
	23	#define RTS_ASSERT 1
	24	#define RTS_NEGATE 0
	25	#define CTS_ASSERT 1
	26	#define CTS_NEGATE 0
	27
	28	/*
	29	* Dimensions in pixels
	30	*/
	31	#define LCD_WIDTH 160
	32	#define LCD_HEIGHT 100
	33
	34	/*
	35	* Dimensions in bytes
	36	*/
	37	#define LCD_BUF_SIZE ((LCD_WIDTH*LCD_HEIGHT)>>3)
	38
	39	#if LCD_BPP != LCD_MONOCHROME
	40	#error "MCC200 support only monochrome displays (1 bpp)!"
	41	#endif
	42
	43	#define PSOC_RETRIES 10 /* each of PSOC_WAIT_TIME */
	44	#define PSOC_WAIT_TIME 10 /* usec */
	45
d3983ee8 CLC	46	#include <video_font.h>
	47	#define FONT_WIDTH VIDEO_FONT_WIDTH
	48
e8143e72 WD	49	DECLARE_GLOBAL_DATA_PTR;
	50
	51	/*
	52	* LCD information
	53	*/
	54	vidinfo_t panel_info = {
	55	LCD_WIDTH, LCD_HEIGHT, LCD_BPP
	56	};
	57
e8143e72 WD	58
	59	/*
	60	* The device we use to communicate with PSoC
	61	*/
	62	int serial_inited = 0;
	63
e8143e72 WD	64	/*
	65	* Imported functions to support the PSoC protocol
	66	*/
	67	extern int serial_init_dev (unsigned long dev_base);
	68	extern void serial_setrts_dev (unsigned long dev_base, int s);
	69	extern int serial_getcts_dev (unsigned long dev_base);
	70	extern void serial_putc_raw_dev(unsigned long dev_base, const char c);
	71
	72	/*
	73	* Just stubs for our driver, needed for compiling compabilty with
	74	* the common LCD driver code.
	75	*/
	76	void lcd_initcolregs (void)
	77	{
	78	}
	79
	80	void lcd_ctrl_init (void *lcdbase)
	81	{
	82	}
	83
	84	/*
	85	* Function sends the contents of the frame-buffer to the LCD
	86	*/
	87	void lcd_enable (void)
	88	{
	89	int i, retries, fb_size;
	90
	91	if (!serial_inited) {
	92	unsigned long baud;
	93
	94	baud = gd->baudrate;
	95	gd->baudrate = PSOC_BAUD;
	96	serial_init_dev(PSOC_PSC);
	97	gd->baudrate = baud;
	98	serial_setrts_dev (PSOC_PSC, RTS_ASSERT);
	99	serial_inited = 1;
	100	}
	101
	102	/*
	103	* Implement PSoC communication protocol:
	104	* 1. Assert RTS, wait CTS assertion
	105	* 2. Transmit data
	106	* 3. Negate RTS, wait CTS negation
	107	*/
	108
	109	/* 1 */
	110	serial_setrts_dev (PSOC_PSC, RTS_ASSERT);
	111	for (retries = PSOC_RETRIES; retries; retries--) {
	112	if (serial_getcts_dev(PSOC_PSC) == CTS_ASSERT)
	113	break;
	114	udelay (PSOC_WAIT_TIME);
	115	}
	116	if (!retries) {
	117	printf ("%s Error: PSoC doesn't respond on "
	118	"RTS ASSERT\n", __FUNCTION__);
	119	}
	120
	121	/* 2 */
	122	fb_size = panel_info.vl_row * (panel_info.vl_col >> 3);
	123
	124	#if !defined(SWAPPED_LCD)
	125	for (i=0; i<fb_size; i++) {
00a0ca59	126	serial_putc_raw_dev(PSOC_PSC, ((char *)gd->fb_base)[i]);
e8143e72 WD	127	}
	128	#else
	129	{
	130	int x, y, pwidth;
00a0ca59	131	char p = (char )gd->fb_base;
e8143e72 WD	132
	133	pwidth = ((panel_info.vl_col+7) >> 3);
	134	for (y=0; y<panel_info.vl_row; y++) {
	135	i = y * pwidth;
	136	for (x=0; x<pwidth; x+=5) {
	137	serial_putc_raw_dev (PSOC_PSC, (p[i+x+2]<<4 & 0xF0) \| (p[i+x+3]>>4 & 0x0F));
	138	serial_putc_raw_dev (PSOC_PSC, (p[i+x+3]<<4 & 0xF0) \| (p[i+x+4]>>4 & 0x0F));
	139	serial_putc_raw_dev (PSOC_PSC, (p[i+x+4]<<4 & 0xF0) \| (p[i+x]>>4 & 0x0F));
	140	serial_putc_raw_dev (PSOC_PSC, (p[i+x]<<4 & 0xF0) \| (p[i+x+1]>>4 & 0x0F));
	141	serial_putc_raw_dev (PSOC_PSC, (p[i+x+1]<<4 & 0xF0) \| (p[i+x+2]>>4 & 0x0F));
	142	}
	143	}
	144	}
	145	#endif
	146
	147	/* 3 */
	148	serial_setrts_dev (PSOC_PSC, RTS_NEGATE);
	149	for (retries = PSOC_RETRIES; retries; retries--) {
	150	if (serial_getcts_dev(PSOC_PSC) == CTS_NEGATE)
	151	break;
	152	udelay (PSOC_WAIT_TIME);
	153	}
e8143e72 WD	154
	155	return;
	156	}
638dd145 SP	157	#ifdef CONFIG_PROGRESSBAR
638dd145 SP	158
638dd145 SP	159	void show_progress (int size, int tot)
	160	{
	161	int cnt;
	162	int i;
	163	static int rc = 0;
	164
	165	rc += size;
	166
	167	cnt = ((LCD_WIDTH/FONT_WIDTH) * rc) / tot;
	168
	169	rc -= (cnt * tot) / (LCD_WIDTH/FONT_WIDTH);
	170
	171	for (i = 0; i < cnt; i++) {
	172	lcd_putc(0xdc);
	173	}
	174
	175	if (cnt) {
	176	lcd_enable(); /* MCC200-specific - send the framebuffer to PSoC */
	177	}
	178	}
	179
	180	#endif
bfdcc65e NK	181
	182	int bmp_display(ulong addr, int x, int y)
	183	{
	184	int ret;
	185	bmp_image_t bmp = (bmp_image_t )addr;
	186
	187	if (!bmp) {
	188	printf("There is no valid bmp file at the given address\n");
	189	return 1;
	190	}
	191
	192	ret = lcd_display_bitmap((ulong)bmp, x, y);
	193
	194	if ((unsigned long)bmp != addr)
	195	free(bmp);
	196
	197	return ret;
	198	}
	199
e8143e72	200	#endif /* CONFIG_LCD */