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Sansa e200v2: LCD
- Cosmetics change to reduce the diff with lcd-fuze.c: - remove useless headers - move/remove/change comments - rename functions - fix casts Now the differences with fuze lcd code are mostly: - lcd_window* code - _display_on() / as3525_dbop_init() git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24182 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rafaël Carré
parent
98fa13cb29
commit
3992f18982
1 changed files with 70 additions and 94 deletions
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@ -22,23 +22,14 @@
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#include "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "thread.h"
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#include <string.h>
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#include <stdlib.h>
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "bidi.h"
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#include "clock-target.h"
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/* The controller is unknown, but some registers appear to be the same as the
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HD66789R */
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static bool display_on = false; /* is the display turned on? */
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static bool display_flipped = false;
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/* we need to write a red pixel for correct button reads
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* (see lcd_button_support()), but that must not happen while the lcd is
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* updating so block lcd_button_support the during updates */
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static volatile bool lcd_busy = false;
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/* register defines */
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#define R_START_OSC 0x00
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@ -98,6 +89,8 @@ static unsigned short r_entry_mode = R_ENTRY_MODE_HORZ_NORMAL;
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#define R_DISP_CONTROL_REV 0x0000
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static unsigned short r_disp_control_rev = R_DISP_CONTROL_NORMAL;
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static volatile bool lcd_busy = false;
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static inline void lcd_delay(int x)
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{
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do {
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@ -105,31 +98,30 @@ static inline void lcd_delay(int x)
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} while (x--);
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}
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/* DBOP initialisation, do what OF does */
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static void ams3525_dbop_init(void)
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static void as3525_dbop_init(void)
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{
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CGU_DBOP = (1<<3) | AS3525_DBOP_DIV;
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DBOP_TIMPOL_01 = 0xe167e167;
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DBOP_TIMPOL_23 = 0xe167006e;
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/* short count, 16bit write, read-timing =8 */
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DBOP_CTRL = (1<<18)|(1<<12)|(8<<0);
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/* short count: 16 | output data width: 16 | readstrobe line */
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DBOP_CTRL = (1<<18|1<<12|1<<3);
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GPIOB_AFSEL = 0xfc;
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GPIOC_AFSEL = 0xff;
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DBOP_TIMPOL_23 = 0x6000e;
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/* short count,write enable, 16bit write, read-timing =8 */
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DBOP_CTRL = (1<<18)|(1<<16)|(1<<12)|(8<<0);
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/* short count: 16|enable write|output data width: 16|read strobe line */
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DBOP_CTRL = (1<<18|1<<16|1<<12|1<<3);
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DBOP_TIMPOL_01 = 0x6e167;
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DBOP_TIMPOL_23 = 0xa167e06f;
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/* TODO: The OF calls some other functions here, but maybe not important */
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}
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static void lcd_write_single_data16(unsigned short value)
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static void lcd_write_value16(unsigned short value)
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{
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DBOP_CTRL &= ~(1<<14|1<<13);
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lcd_delay(10);
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@ -141,13 +133,13 @@ static void lcd_write_cmd(int cmd)
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{
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/* Write register */
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DBOP_TIMPOL_23 = 0xa167006e;
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lcd_write_single_data16(cmd);
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lcd_write_value16(cmd);
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/* Wait for fifo to empty */
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while ((DBOP_STAT & (1<<10)) == 0);
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/* Fuze OF has this loop and it seems to help us now also */
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int delay=8;
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int delay = 8;
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while(delay--);
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DBOP_TIMPOL_23 = 0xa167e06f;
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@ -157,14 +149,14 @@ void lcd_write_data(const fb_data* p_bytes, int count)
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{
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const long *data;
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if ((int)p_bytes & 0x3)
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{ /* need to do a single 16bit write beforehand if the address is */
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/* not word aligned*/
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lcd_write_single_data16(*p_bytes);
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{ /* need to do a single 16bit write beforehand if the address is
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* not word aligned */
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lcd_write_value16(*p_bytes);
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count--;p_bytes++;
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}
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/* from here, 32bit transfers are save */
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/* set it to transfer 4*(outputwidth) units at a time, */
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/* if bit 12 is set it only does 2 halfwords though */
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/* from here, 32bit transfers are save
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* set it to transfer 4*(outputwidth) units at a time,
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* if bit 12 is set it only does 2 halfwords though */
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DBOP_CTRL |= (1<<13|1<<14);
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data = (long*)p_bytes;
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while (count > 1)
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@ -181,7 +173,7 @@ void lcd_write_data(const fb_data* p_bytes, int count)
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/* due to the 32bit alignment requirement or uneven count,
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* we possibly need to do a 16bit transfer at the end also */
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if (count > 0)
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lcd_write_single_data16(*(fb_data*)data);
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lcd_write_value16(*(fb_data*)data);
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}
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static void lcd_write_reg(int reg, int value)
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@ -189,7 +181,7 @@ static void lcd_write_reg(int reg, int value)
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fb_data data = value;
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lcd_write_cmd(reg);
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lcd_write_single_data16(data);
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lcd_write_value16(data);
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}
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/*** hardware configuration ***/
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@ -211,6 +203,8 @@ void lcd_set_invert_display(bool yesno)
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}
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static bool display_flipped = false;
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/* turn the display upside down */
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void lcd_set_flip(bool yesno)
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{
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@ -230,11 +224,11 @@ static void lcd_window(int xmin, int ymin, int xmax, int ymax)
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}
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else
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{
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
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((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
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lcd_write_reg(R_VERT_RAM_ADDR_POS,
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lcd_write_reg(R_VERT_RAM_ADDR_POS,
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((LCD_HEIGHT-1 - ymin) << 8) | (LCD_HEIGHT-1 - ymax));
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lcd_write_reg(R_RAM_ADDR_SET,
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lcd_write_reg(R_RAM_ADDR_SET,
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((LCD_HEIGHT-1 - ymin) << 8) | (LCD_WIDTH-1 - xmin));
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}
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}
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@ -339,26 +333,20 @@ static void _display_on(void)
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lcd_write_reg(R_DISP_CONTROL1, 0x0033 | r_disp_control_rev);
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display_on=true; /* must be done before calling lcd_update() */
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display_on = true; /* must be done before calling lcd_update() */
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lcd_update();
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}
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/* LCD init */
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void lcd_init_device(void)
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{
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ams3525_dbop_init();
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/* Init GPIOs the same as the OF */
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as3525_dbop_init();
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GPIOA_DIR |= (1<<5);
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GPIOA_PIN(5) = 0;
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GPIOA_PIN(4) = 0; /*c80b0040 := 0;*/
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GPIOA_PIN(4) = 0;
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lcd_delay(1);
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GPIOA_PIN(5) = (1<<5);
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lcd_delay(1);
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_display_on();
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@ -367,18 +355,18 @@ void lcd_init_device(void)
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#if defined(HAVE_LCD_ENABLE)
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void lcd_enable(bool on)
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{
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if(display_on!=on)
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if (display_on == on)
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return;
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if(on)
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{
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if(on)
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{
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_display_on();
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send_event(LCD_EVENT_ACTIVATION, NULL);
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}
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else
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{
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display_on=false;
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lcd_write_reg(R_POWER_CONTROL1, 0x0001);
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}
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_display_on();
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send_event(LCD_EVENT_ACTIVATION, NULL);
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}
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else
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{
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display_on = false;
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lcd_write_reg(R_POWER_CONTROL1, 0x0001);
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}
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}
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#endif
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@ -388,23 +376,12 @@ bool lcd_active(void)
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{
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return display_on;
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}
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#endif
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/*** update functions ***/
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static unsigned lcd_yuv_options = 0;
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/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
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extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
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int width,
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int stride);
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extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
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int width,
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int stride,
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int x_screen, /* To align dither pattern */
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int y_screen);
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void lcd_yuv_set_options(unsigned options)
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{
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lcd_yuv_options = options;
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@ -414,13 +391,13 @@ static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
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{
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if (!display_flipped)
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{
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
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((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
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lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
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lcd_write_reg(R_RAM_ADDR_SET,
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lcd_write_reg(R_RAM_ADDR_SET,
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(ymin << 8) | (LCD_WIDTH-1 - xmin));
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}
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else
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}
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else
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{
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (xmax << 8) | xmin);
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lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
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@ -428,6 +405,16 @@ static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
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}
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}
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/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
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extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
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int width,
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int stride);
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extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
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int width,
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int stride,
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int x_screen, /* To align dither pattern */
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int y_screen);
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/* Performance function to blit a YUV bitmap directly to the LCD
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* src_x, src_y, width and height should be even
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* x, y, width and height have to be within LCD bounds
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@ -439,8 +426,6 @@ void lcd_blit_yuv(unsigned char * const src[3],
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unsigned char const * yuv_src[3];
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off_t z;
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lcd_busy = true;
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/* Sorry, but width and height must be >= 2 or else */
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width &= ~1;
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height >>= 1;
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@ -450,14 +435,11 @@ void lcd_blit_yuv(unsigned char * const src[3],
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yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
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yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
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if (!display_flipped)
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{
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lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VIDEO_NORMAL);
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}
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else
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{
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lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VIDEO_FLIPPED);
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}
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lcd_busy = true;
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lcd_write_reg(R_ENTRY_MODE,
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display_flipped ? R_ENTRY_MODE_VIDEO_FLIPPED : R_ENTRY_MODE_VIDEO_NORMAL
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);
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if (lcd_yuv_options & LCD_YUV_DITHER)
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{
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@ -465,14 +447,13 @@ void lcd_blit_yuv(unsigned char * const src[3],
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{
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lcd_window_blit(y, x, y+1, x+width-1);
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/* Start write to GRAM */
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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y+=2;
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y += 2;
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}
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while (--height > 0);
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}
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@ -482,14 +463,13 @@ void lcd_blit_yuv(unsigned char * const src[3],
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{
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lcd_window_blit(y, x, y+1, x+width-1);
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/* Start write to GRAM */
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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lcd_write_yuv420_lines(yuv_src, width, stride);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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y+=2;
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y += 2;
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}
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while (--height > 0);
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}
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@ -516,15 +496,13 @@ void lcd_update(void)
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lcd_write_data((fb_data*)lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT);
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lcd_busy = false;
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} /* lcd_update */
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}
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/* Update a fraction of the display. */
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void lcd_update_rect(int x, int y, int width, int height)
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{
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const fb_data *ptr;
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int ymax, xmax;
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int xmax, ymax;
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if (!display_on)
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return;
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@ -550,15 +528,13 @@ void lcd_update_rect(int x, int y, int width, int height)
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lcd_busy = true;
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lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
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lcd_window(x, y, xmax, ymax);
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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ptr = (fb_data*)&lcd_framebuffer[y][x];
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ptr = &lcd_framebuffer[y][x];
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height = ymax - y; /* fix height */
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do
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{
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lcd_write_data(ptr, width);
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@ -567,23 +543,23 @@ void lcd_update_rect(int x, int y, int width, int height)
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while (--height >= 0);
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lcd_busy = false;
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} /* lcd_update_rect */
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}
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/* writes one red pixel outside the visible area, needed for correct
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* dbop reads */
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bool lcd_button_support(void)
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{
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fb_data data = (0xf<<12);
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if (lcd_busy)
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return false;
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lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
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/* Set start position and window */
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lcd_window(LCD_WIDTH+1, LCD_HEIGHT+1, LCD_WIDTH+2, LCD_HEIGHT+2);
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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lcd_write_single_data16(data);
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lcd_write_value16(0xf<<12);
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return true;
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}
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