sansaview: fix lcd code
The lcd driver now works but is awfully slow. The trick is to put it in system mode instead of RGB and setup 16bpp. The GRAM data can then be sent directly with the SPI but since it's bit-banged and the CPU running at slow speed, full screen refresh takes over a second, even with a slightly optmised version. The OF uses a DMA mechanism with a proper LCD controller but the setup is much more complicated and doesn't work at the moment. Change-Id: I6c95d91de31bff97d0a5848b8e2078c21deb5895
This commit is contained in:
Amaury Pouly
parent
46cd8ea824
commit
85390865b5
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@ -104,4 +104,6 @@
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#define GPIOS 18
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#define GPIOT 19
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#define DEV_INIT3 (*(volatile unsigned long *)(0x70000014))
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#endif
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@ -27,12 +27,7 @@
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#include "backlight-target.h"
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#include "lcd.h"
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#include "bitmaps/rockboxlogo.h"
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/* Power and display status */
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static bool power_on = false; /* Is the power turned on? */
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static bool display_on SHAREDBSS_ATTR = false; /* Is the display turned on? */
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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static bool display_on SHAREDBSS_ATTR = true;
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static int lcd_type;
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#define LCD_DATA_OUT_GPIO GPIOH_OUTPUT_VAL
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@ -44,147 +39,109 @@ static int lcd_type;
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#define LCD_CS_GPIO GPIOH_OUTPUT_VAL
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#define LCD_CS_PIN 7
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#ifdef BOOTLOADER
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static void lcd_init_gpio(void)
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{
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/* BOOT: 0x5CC8
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OF: 0x88284 */
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DEV_INIT1 |= 0xfc000000;
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DEV_INIT3 |= 0xc300000;
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outl(inl(0x70000010) | 0xFC000000, 0x70000010);
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outl(inl(0x70000014) | 0xC300000, 0x70000014);
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GPIOE_ENABLE = 0;
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GPIOM_ENABLE &= ~0x3;
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GPIOF_ENABLE = 0;
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GPIOJ_ENABLE &= ~0x1a;
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GPIOB_ENABLE &= ~0x8;
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GPIOE_ENABLE = 0;
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GPIOM_ENABLE &= ~0x3;
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GPIOF_ENABLE = 0;
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GPIOJ_ENABLE &= ~0x1a;
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// reset low
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GPIOB_ENABLE &= ~0x8;
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// SPI chip select
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GPIOH_OUTPUT_VAL |= 0x80;
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GPIOH_OUTPUT_EN |= 0x80;
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GPIOH_ENABLE |= 0x80;
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GPIOH_OUTPUT_EN |= 0x80;
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GPIOH_ENABLE |= 0x80;
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// SPI clock
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GPIOH_OUTPUT_VAL |= 0x40;
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GPIOH_OUTPUT_EN |= 0x40;
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GPIOH_ENABLE |= 0x40;
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GPIOH_OUTPUT_EN |= 0x40;
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GPIOH_ENABLE |= 0x40;
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// unk
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GPIOH_OUTPUT_VAL |= 0x20;
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GPIOH_OUTPUT_EN |= 0x20;
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GPIOH_ENABLE |= 0x20;
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GPIOH_ENABLE |= 0x20;
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// SPI data
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GPIOH_OUTPUT_VAL |= 0x10;
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GPIOH_OUTPUT_EN |= 0x10;
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GPIOH_ENABLE |= 0x10;
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GPIOD_OUTPUT_VAL |= 0x1; /* backlight on */
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GPIOD_ENABLE |= 0x1;
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GPIOH_OUTPUT_EN |= 0x10;
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GPIOH_ENABLE |= 0x10;
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// LCD reset
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GPIOB_OUTPUT_VAL |= 0x4;
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GPIOB_ENABLE |= 0x4;
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GPIOB_OUTPUT_EN |= 0x4;
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DEV_INIT2 = 0x40000000;
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GPIOG_ENABLE |= 0x8;
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GPIOG_OUTPUT_EN &= ~0x8;
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GPIOB_ENABLE |= 0x4;
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GPIOB_OUTPUT_EN |= 0x4;
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DEV_INIT2 = 0x40000000;
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// LCD type
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GPIOG_ENABLE |= 0x8;
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GPIOG_OUTPUT_EN &= ~0x8;
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if (GPIOG_INPUT_VAL & 0x8)
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lcd_type = 1;
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else
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if(GPIOG_INPUT_VAL & 0x8)
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lcd_type = 0;
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else
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lcd_type = 1;
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}
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#endif
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static void lcd_send_msg(unsigned char count, unsigned int data)
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{
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/* BOOT: 0x645C
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OF: 0x88E90 */
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int i;
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GPIO_SET_BITWISE(LCD_CLOCK_GPIO, 1 << LCD_CLOCK_PIN);
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GPIO_CLEAR_BITWISE(LCD_CS_GPIO, 1 << LCD_CS_PIN);
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LCD_CLOCK_GPIO |= (1 << LCD_CLOCK_PIN);
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LCD_CS_GPIO &= ~(1 << LCD_CS_PIN);
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for (i = count - 1; i >= 0; i--)
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for(int i = count - 1; i >= 0; i--)
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{
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if (data & (1 << i))
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{
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LCD_DATA_OUT_GPIO &= ~(1 << LCD_DATA_OUT_PIN);
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} else {
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LCD_DATA_OUT_GPIO |= (1 << LCD_DATA_OUT_PIN);
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}
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LCD_CLOCK_GPIO &= ~(1 << LCD_CLOCK_PIN);
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if(data & (1 << i))
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GPIO_SET_BITWISE(LCD_DATA_OUT_GPIO, 1 << LCD_DATA_OUT_PIN);
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else
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GPIO_CLEAR_BITWISE(LCD_DATA_OUT_GPIO, 1 << LCD_DATA_OUT_PIN);
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GPIO_CLEAR_BITWISE(LCD_CLOCK_GPIO, 1 << LCD_CLOCK_PIN);
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udelay(1);
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LCD_CLOCK_GPIO |= (1 << LCD_CLOCK_PIN);
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GPIO_SET_BITWISE(LCD_CLOCK_GPIO, 1 << LCD_CLOCK_PIN);
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udelay(2);
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}
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LCD_CS_GPIO |= (1 << LCD_CS_PIN);
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LCD_CLOCK_GPIO |= (1 << LCD_CLOCK_PIN);
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udelay(1);
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GPIO_SET_BITWISE(LCD_CS_GPIO, 1 << LCD_CS_PIN);
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}
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/*
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static void lcd_write_reg(unsigned int reg, unsigned int data)
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static void lcd_send_cmd(unsigned int cmd)
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{
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// OF: 0x6278 - referenced from 0x62840
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// So far this function is always called with shift = 0x0 ?
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// If so can remove and simplify
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unsigned int cmd;
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unsigned int shift = 0;
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cmd = shift << 0x2;
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cmd |= 0x70;
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cmd = cmd << 0x10;
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cmd |= reg;
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lcd_send_msg(0x18, cmd);
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cmd = shift << 0x2;
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cmd |= 0x72;
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cmd = cmd << 0x10;
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cmd |= data;
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lcd_send_msg(0x18, cmd);
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// lcd_send_msg(0x70, reg);
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// lcd_send_msg(0x72, data);
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}
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*/
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static void lcd_write_cmd(unsigned int cmd)
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{
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lcd_send_msg(0x18, (0x700000 | cmd));
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lcd_send_msg(24, (0x700000 | cmd));
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}
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static void lcd_write_info(unsigned int data)
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static void lcd_send_data(unsigned int data)
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{
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lcd_send_msg(0x18, (0x720000 | data));
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lcd_send_msg(24, (0x720000 | data));
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}
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static void lcd_write_reg(unsigned int cmd, unsigned int data)
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{
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lcd_write_cmd(cmd);
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lcd_write_info(data);
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lcd_send_cmd(cmd);
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lcd_send_data(data);
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}
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void lcd_reset(void)
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{
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/* BOOT: 0x623C
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OF: 0x88BDC */
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GPIOB_OUTPUT_VAL |= 0x4;
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GPIO_SET_BITWISE(GPIOB_OUTPUT_VAL, 0x4);
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udelay(1000);
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GPIOB_OUTPUT_VAL &= ~0x4;
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GPIO_CLEAR_BITWISE(GPIOB_OUTPUT_VAL, 0x4);
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udelay(10000);
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GPIOB_OUTPUT_VAL |= 0x4;
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GPIO_SET_BITWISE(GPIOB_OUTPUT_VAL, 0x4);
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udelay(50000);
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}
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/* Run the powerup sequence for the driver IC */
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static void lcd_power_on(void)
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{
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lcd_init_gpio();
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lcd_reset();
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/* OF: 0x5DC0 *
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* r2: cmd *
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* r3: data */
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lcd_write_reg(0xE5, 0x8000);
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lcd_write_reg(0x0, 0x1);
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lcd_write_reg(0x1, 0x100);
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lcd_write_reg(0x2, 0x700);
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lcd_write_reg(0x3, 0x1230);
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lcd_write_reg(0x3, 0x5230);
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lcd_write_reg(0x4, 0x0);
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lcd_write_reg(0x8, 0x408);
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lcd_write_reg(0x8, 0x408); /* back porch = 8, front porch = 4 */
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lcd_write_reg(0x9, 0x0);
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lcd_write_reg(0xa, 0x0);
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lcd_write_reg(0xd, 0x0);
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@ -200,8 +157,6 @@ static void lcd_power_on(void)
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lcd_write_reg(0x12, 0x13c);
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sleep(HZ/20);
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/* BOOT: BNE 0x5fb2 */
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if (lcd_type == 0)
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{
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lcd_write_reg(0x13, 0x1700);
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@ -234,19 +189,17 @@ static void lcd_power_on(void)
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lcd_write_reg(0x36, 0x504);
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lcd_write_reg(0x37, 0x707);
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lcd_write_reg(0x38, 0x306);
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lcd_write_reg(0x39, 0x9);
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lcd_write_reg(0x39, 0x7);
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}
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/* BOOT: 0x6066 */
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lcd_write_reg(0x3c, 0x700);
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lcd_write_reg(0x3d, 0x700);
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lcd_write_reg(0x50, 0x0);
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lcd_write_reg(0x51, 0xef); /* 239 - LCD_WIDTH */
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lcd_write_reg(0x51, 0xef);
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lcd_write_reg(0x52, 0x0);
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lcd_write_reg(0x53, 0x13f); /* 319 - LCD_HEIGHT */
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lcd_write_reg(0x53, 0x13f);
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/* BOOT: b 0x6114 */
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lcd_write_reg(0x60, 0x2700);
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lcd_write_reg(0x61, 0x1);
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lcd_write_reg(0x6a, 0x0);
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@ -258,7 +211,6 @@ static void lcd_power_on(void)
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lcd_write_reg(0x84, 0x0);
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lcd_write_reg(0x85, 0x0);
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/* BOOT: 0x61A8 */
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lcd_write_reg(0x90, 0x10);
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lcd_write_reg(0x92, 0x0);
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lcd_write_reg(0x93, 0x3);
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@ -266,28 +218,14 @@ static void lcd_power_on(void)
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lcd_write_reg(0x97, 0x0);
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lcd_write_reg(0x98, 0x0);
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lcd_write_reg(0xc, 0x110);
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lcd_write_reg(0xc, 0x000); // SYSTEM mode
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lcd_write_reg(0x7, 0x173);
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sleep(HZ/10);
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power_on = true;
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}
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/* unknown 01 and 02 - sleep or enable on and off funcs? */
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void unknown01(void)
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{
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/* BOOT: 0x62C4
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OF: 0x88CA0 */
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lcd_write_reg(0x10, 0x17B0);
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udelay(100);
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lcd_write_reg(0x7, 0x173);
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}
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void unknown02(void)
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{
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/* BOOT: 0x6308
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OF: 0x88D0C */
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lcd_power_on();
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lcd_write_reg(0x7, 0x160);
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lcd_write_reg(0x10, 0x17B1);
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@ -295,9 +233,6 @@ void unknown02(void)
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void unknown03(bool r0)
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{
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/* BOOT: 0x6410
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OF: 0x88E30 */
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if (r0)
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GPIOJ_ENABLE &= ~0x2;
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else
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@ -308,76 +243,71 @@ void unknown03(bool r0)
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}
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}
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/* Run the display on sequence for the driver IC */
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static void lcd_display_on(void)
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void lcd_init_device(void)
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{
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display_on = true;
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lcd_power_on();
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}
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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#if defined(HAVE_LCD_ENABLE)
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bool lcd_active(void)
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{
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return display_on;
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}
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/* Turn off visible display operations */
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static void lcd_display_off(void)
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{
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display_on = false;
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}
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#endif
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void lcd_init_device(void)
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{
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#ifdef BOOTLOADER /* Bother at all to do this again? */
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/* Init GPIO ports */
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lcd_init_gpio();
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lcd_power_on();
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lcd_display_on();
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#else
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power_on = true;
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display_on = true;
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lcd_set_invert_display(false);
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lcd_set_flip(false);
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#endif
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}
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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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(void)on;
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display_on = on;
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if(on)
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{
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lcd_write_reg(0x10, 0x17B0);
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udelay(100);
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lcd_write_reg(0x7, 0x173);
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}
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else
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{
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lcd_write_reg(0x7, 0x160);
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lcd_write_reg(0x10, 0x17B1);
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}
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}
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#endif
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#if defined(HAVE_LCD_SLEEP)
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void lcd_sleep(void)
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static inline void lcd_send_frame_byte(unsigned char data)
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{
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for(int bit = 0; bit < 8; bit++)
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{
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if(data & 0x80)
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GPIO_SET_BITWISE(LCD_DATA_OUT_GPIO, 1 << LCD_DATA_OUT_PIN);
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else
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GPIO_CLEAR_BITWISE(LCD_DATA_OUT_GPIO, 1 << LCD_DATA_OUT_PIN);
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data <<= 1;
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GPIO_CLEAR_BITWISE(LCD_CLOCK_GPIO, 1 << LCD_CLOCK_PIN);
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GPIO_SET_BITWISE(LCD_CLOCK_GPIO, 1 << LCD_CLOCK_PIN);
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}
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}
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static void lcd_send_frame(const fb_data *addr, int count)
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{
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GPIO_SET_BITWISE(LCD_CLOCK_GPIO, 1 << LCD_CLOCK_PIN);
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GPIO_CLEAR_BITWISE(LCD_CS_GPIO, 1 << LCD_CS_PIN);
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lcd_send_frame_byte(0x72);
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while(count-- > 0)
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{
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lcd_send_frame_byte(*addr >> 8);
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lcd_send_frame_byte(*addr++ & 0xff);
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}
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GPIO_SET_BITWISE(LCD_CS_GPIO, 1 << LCD_CS_PIN);
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}
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#endif
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void lcd_update(void)
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{
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const fb_data *addr;
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addr = FBADDR(LCD_WIDTH,LCD_HEIGHT);
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if(!display_on)
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return;
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lcd_write_reg(0x20, 0x0);
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lcd_write_reg(0x21, 0x0);
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int i,j;
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for(i=0; i < LCD_HEIGHT; i++)
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{
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for(j=0; j < LCD_WIDTH; j++)
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{
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lcd_write_reg(0x22, *addr);
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addr++;
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}
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}
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lcd_send_cmd(0x22);
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lcd_send_frame(FBADDR(0, 0), LCD_WIDTH * LCD_HEIGHT);
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}
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/* Update a fraction of the display. */
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@ -408,36 +338,3 @@ void lcd_set_flip(bool yesno)
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{
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(void)yesno;
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}
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/* Blitting functions */
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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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}
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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(fb_data *dst,
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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(fb_data *dst,
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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_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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(void)src;
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(void)src_x;
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(void)src_y;
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(void)stride;
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(void)x;
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(void)y;
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(void)width;
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(void)height;
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}
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