1 /*
2 * Copyright (c) 2006-2018, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2020-04-12 Jonne first version from 4.3 inch lcd(480x272)
9 */
10 #include <rtthread.h>
11 #include <s3c24x0.h>
12
13 /* LCD driver for N3'5 */
14 #define LCD_WIDTH 480
15 #define LCD_HEIGHT 272
16 #define LCD_PIXCLOCK 4
17
18 #define LCD_RIGHT_MARGIN 2
19 #define LCD_LEFT_MARGIN 2
20 #define LCD_HSYNC_LEN 41
21
22 #define LCD_UPPER_MARGIN 2
23 #define LCD_LOWER_MARGIN 2
24 #define LCD_VSYNC_LEN 10
25
26 #define LCD_XSIZE LCD_WIDTH
27 #define LCD_YSIZE LCD_HEIGHT
28 #define SCR_XSIZE LCD_WIDTH
29 #define SCR_YSIZE LCD_HEIGHT
30
31 #define RT_HW_LCD_WIDTH LCD_WIDTH
32 #define RT_HW_LCD_HEIGHT LCD_HEIGHT
33
34 #define MVAL (13)
35 #define MVAL_USED (0) //0=each frame 1=rate by MVAL
36 #define INVVDEN (1) //0=normal 1=inverted
37 #define BSWP (0) //Byte swap control
38 #define HWSWP (1) //Half word swap control
39
40 #define GPB1_TO_OUT() (GPBUP &= 0xfffd, GPBCON &= 0xfffffff3, GPBCON |= 0x00000004)
41 #define GPB1_TO_1() (GPBDAT |= 0x0002)
42 #define GPB1_TO_0() (GPBDAT &= 0xfffd)
43
44 #define S3C2410_LCDCON1_CLKVAL(x) ((x) << 8)
45 #define S3C2410_LCDCON1_MMODE (1<<7)
46 #define S3C2410_LCDCON1_DSCAN4 (0<<5)
47 #define S3C2410_LCDCON1_STN4 (1<<5)
48 #define S3C2410_LCDCON1_STN8 (2<<5)
49 #define S3C2410_LCDCON1_TFT (3<<5)
50
51 #define S3C2410_LCDCON1_STN1BPP (0<<1)
52 #define S3C2410_LCDCON1_STN2GREY (1<<1)
53 #define S3C2410_LCDCON1_STN4GREY (2<<1)
54 #define S3C2410_LCDCON1_STN8BPP (3<<1)
55 #define S3C2410_LCDCON1_STN12BPP (4<<1)
56
57 #define S3C2410_LCDCON1_TFT1BPP (8<<1)
58 #define S3C2410_LCDCON1_TFT2BPP (9<<1)
59 #define S3C2410_LCDCON1_TFT4BPP (10<<1)
60 #define S3C2410_LCDCON1_TFT8BPP (11<<1)
61 #define S3C2410_LCDCON1_TFT16BPP (12<<1)
62 #define S3C2410_LCDCON1_TFT24BPP (13<<1)
63
64 #define S3C2410_LCDCON1_ENVID (1)
65
66 #define S3C2410_LCDCON1_MODEMASK 0x1E
67
68 #define S3C2410_LCDCON2_VBPD(x) ((x) << 24)
69 #define S3C2410_LCDCON2_LINEVAL(x) ((x) << 14)
70 #define S3C2410_LCDCON2_VFPD(x) ((x) << 6)
71 #define S3C2410_LCDCON2_VSPW(x) ((x) << 0)
72
73 #define S3C2410_LCDCON2_GET_VBPD(x) ( ((x) >> 24) & 0xFF)
74 #define S3C2410_LCDCON2_GET_VFPD(x) ( ((x) >> 6) & 0xFF)
75 #define S3C2410_LCDCON2_GET_VSPW(x) ( ((x) >> 0) & 0x3F)
76
77 #define S3C2410_LCDCON3_HBPD(x) ((x) << 19)
78 #define S3C2410_LCDCON3_WDLY(x) ((x) << 19)
79 #define S3C2410_LCDCON3_HOZVAL(x) ((x) << 8)
80 #define S3C2410_LCDCON3_HFPD(x) ((x) << 0)
81 #define S3C2410_LCDCON3_LINEBLANK(x)((x) << 0)
82
83 #define S3C2410_LCDCON3_GET_HBPD(x) ( ((x) >> 19) & 0x7F)
84 #define S3C2410_LCDCON3_GET_HFPD(x) ( ((x) >> 0) & 0xFF)
85
86 #define S3C2410_LCDCON4_MVAL(x) ((x) << 8)
87 #define S3C2410_LCDCON4_HSPW(x) ((x) << 0)
88 #define S3C2410_LCDCON4_WLH(x) ((x) << 0)
89
90 #define S3C2410_LCDCON4_GET_HSPW(x) ( ((x) >> 0) & 0xFF)
91
92 #define S3C2410_LCDCON5_BPP24BL (1<<12)
93 #define S3C2410_LCDCON5_FRM565 (1<<11)
94 #define S3C2410_LCDCON5_INVVCLK (1<<10)
95 #define S3C2410_LCDCON5_INVVLINE (1<<9)
96 #define S3C2410_LCDCON5_INVVFRAME (1<<8)
97 #define S3C2410_LCDCON5_INVVD (1<<7)
98 #define S3C2410_LCDCON5_INVVDEN (1<<6)
99 #define S3C2410_LCDCON5_INVPWREN (1<<5)
100 #define S3C2410_LCDCON5_INVLEND (1<<4)
101 #define S3C2410_LCDCON5_PWREN (1<<3)
102 #define S3C2410_LCDCON5_ENLEND (1<<2)
103 #define S3C2410_LCDCON5_BSWP (1<<1)
104 #define S3C2410_LCDCON5_HWSWP (1<<0)
105
106 #define S3C2410_LCDINT_FRSYNC (1<<1)
107
108 static volatile rt_uint16_t _rt_framebuffer[RT_HW_LCD_HEIGHT][RT_HW_LCD_WIDTH];
109 //static volatile rt_uint16_t _rt_hw_framebuffer[RT_HW_LCD_HEIGHT][RT_HW_LCD_WIDTH];
110 static struct rt_device_graphic_info _lcd_info;
111
lcd_power_enable(int invpwren,int pwren)112 static void lcd_power_enable(int invpwren, int pwren)
113 {
114 //GPG4 is setted as LCD_PWREN
115 GPGUP = GPGUP | (1<<4); // Pull-up disable
116 GPGCON = GPGCON | (3<<8); //GPG4=LCD_PWREN
117
118 //Enable LCD POWER ENABLE Function
119 LCDCON5 = LCDCON5&(~(1<<3))|(pwren<<3); // PWREN
120 LCDCON5 = LCDCON5&(~(1<<5))|(invpwren<<5); // INVPWREN
121 }
122
lcd_envid_on_off(int onoff)123 static void lcd_envid_on_off(int onoff)
124 {
125 if(onoff==1)
126 /*ENVID=ON*/
127 LCDCON1|=1;
128 else
129 /*ENVID Off*/
130 LCDCON1 =LCDCON1 & 0x3fffe;
131 }
132
133 //********************** BOARD LCD backlight ****************************
LcdBkLtSet(rt_uint32_t HiRatio)134 static void LcdBkLtSet(rt_uint32_t HiRatio)
135 {
136 #define FREQ_PWM1 1000
137 if(!HiRatio)
138 {
139 GPBCON = GPBCON & (~(3<<2)) | (1<<2) ;
140 GPBDAT &= ~(1<<1);
141 return;
142 }
143 GPBCON = GPBCON & (~(3<<2)) | (2<<2) ;
144
145 if( HiRatio > 100 ) HiRatio = 100 ;
146
147 TCON = TCON & (~(0xf<<8)) ; // clear manual update bit, stop Timer1
148
149 TCFG0 &= 0xffffff00; // set Timer 0&1 prescaler 0
150 TCFG0 |= 15; //prescaler = 15+1
151
152 TCFG1 &= 0xffffff0f; // set Timer 1 MUX 1/16
153 TCFG1 |= 0x00000030; // set Timer 1 MUX 1/16
154
155 TCNTB1 = ( 100000000>>8 )/FREQ_PWM1; //if set inverter off, when TCNT2<=TCMP2, TOUT is high, TCNT2>TCMP2, TOUT is low
156 TCMPB1 = ( TCNTB1*(100-HiRatio))/100 ; //if set inverter on, when TCNT2<=TCMP2, TOUT is low, TCNT2>TCMP2, TOUT is high
157
158 TCON = TCON & (~(0xf<<8)) | (0x0e<<8) ;
159 TCON = TCON & (~(0xf<<8)) | (0x0d<<8) ;
160 }
161
162 /* RT-Thread Device Interface */
rt_lcd_init(rt_device_t dev)163 static rt_err_t rt_lcd_init (rt_device_t dev)
164 {
165 GPB1_TO_OUT();
166 GPB1_TO_1();
167
168 GPCUP = 0x00000000;
169 GPCCON = 0xaaaa02a9;
170
171 GPDUP = 0x00000000;
172 GPDCON = 0xaaaaaaaa;
173
174 #define M5D(n) ((n)&0x1fffff)
175 #define LCD_ADDR ((rt_uint32_t)_rt_framebuffer)
176 LCDCON1 = (LCD_PIXCLOCK << 8) | (3 << 5) | (12 << 1);
177 LCDCON2 = ((LCD_UPPER_MARGIN - 1) << 24) | ((LCD_HEIGHT - 1) << 14) | ((LCD_LOWER_MARGIN - 1) << 6) | ((LCD_VSYNC_LEN - 1) << 0);
178 LCDCON3 = ((LCD_RIGHT_MARGIN - 1) << 19) | ((LCD_WIDTH - 1) << 8) | ((LCD_LEFT_MARGIN - 1) << 0);
179 LCDCON4 = (13 << 8) | ((LCD_HSYNC_LEN - 1) << 0);
180 #if !defined(LCD_CON5)
181 #define LCD_CON5 ((1<<11) | (0<<10) | (1<<9) | (1<<8) | (1<<0))
182 #endif
183 LCDCON5 = LCD_CON5;
184
185 LCDSADDR1 = ((LCD_ADDR >> 22) << 21) | ((M5D(LCD_ADDR >> 1)) << 0);
186 LCDSADDR2 = M5D((LCD_ADDR + LCD_WIDTH * LCD_HEIGHT * 2) >> 1);
187 LCDSADDR3 = LCD_WIDTH;
188
189 LCDINTMSK |= (3);
190 LPCSEL &= (~7) ;
191 TPAL=0;
192
193 LcdBkLtSet(70) ;
194 lcd_power_enable(0, 1);
195 lcd_envid_on_off(1);
196
197 return RT_EOK;
198 }
199
rt_lcd_control(rt_device_t dev,int cmd,void * args)200 static rt_err_t rt_lcd_control (rt_device_t dev, int cmd, void *args)
201 {
202 switch (cmd)
203 {
204 case RTGRAPHIC_CTRL_RECT_UPDATE:
205 break;
206 case RTGRAPHIC_CTRL_POWERON:
207 break;
208 case RTGRAPHIC_CTRL_POWEROFF:
209 break;
210 case RTGRAPHIC_CTRL_GET_INFO:
211 rt_memcpy(args, &_lcd_info, sizeof(_lcd_info));
212 break;
213 case RTGRAPHIC_CTRL_SET_MODE:
214 break;
215 }
216
217 return RT_EOK;
218 }
219
rt_hw_lcd_init(void)220 int rt_hw_lcd_init(void)
221 {
222 rt_device_t lcd = rt_malloc(sizeof(struct rt_device));
223 if (lcd == RT_NULL)
224 return -RT_ERROR; /* no memory yet */
225
226 _lcd_info.bits_per_pixel = 16;
227 _lcd_info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P;
228 _lcd_info.framebuffer = (void*)_rt_framebuffer;
229 _lcd_info.width = LCD_WIDTH;
230 _lcd_info.height = LCD_HEIGHT;
231
232 /* init device structure */
233 lcd->type = RT_Device_Class_Unknown;
234 lcd->init = rt_lcd_init;
235 lcd->open = RT_NULL;
236 lcd->close = RT_NULL;
237 lcd->control = rt_lcd_control;
238 lcd->user_data = (void*)&_lcd_info;
239
240 /* register lcd device to RT-Thread */
241 rt_device_register(lcd, "lcd", RT_DEVICE_FLAG_RDWR);
242 }
243
244 INIT_BOARD_EXPORT(rt_hw_lcd_init);
245