diff options
Diffstat (limited to 'firmware/target/arm/imx233/sony-nwz/lcd-nwze370.c')
| -rw-r--r-- | firmware/target/arm/imx233/sony-nwz/lcd-nwze370.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/sony-nwz/lcd-nwze370.c b/firmware/target/arm/imx233/sony-nwz/lcd-nwze370.c new file mode 100644 index 0000000000..999f4ee525 --- /dev/null +++ b/firmware/target/arm/imx233/sony-nwz/lcd-nwze370.c @@ -0,0 +1,219 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (c) 2013 by Amaury Pouly + * + * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include <sys/types.h> /* off_t */ +#include <string.h> +#include "cpu.h" +#include "system.h" +#include "backlight-target.h" +#include "lcd.h" +#include "lcdif-imx233.h" +#include "clkctrl-imx233.h" +#include "pinctrl-imx233.h" +#include "logf.h" + +#ifdef HAVE_LCD_ENABLE +static bool lcd_on; +#endif + +static void lcd_write_reg(uint8_t reg, void *data, int data_len) +{ + imx233_lcdif_set_data_swizzle(0); + imx233_lcdif_set_word_length(8); + imx233_lcdif_pio_send(false, 1, ®); + imx233_lcdif_pio_send(true, data_len, data); +} + +static void lcd_init_seq(void) +{ + // seems compatible with ILI9163 + lcd_write_reg(1, NULL, 0); // software reset + lcd_write_reg(0x11, NULL, 0); // sleep out + mdelay(150); + /* format: (<cmd> <data size> <data0> <dataN>)+ */ + static uint8_t init_seq[] = + { + /* cmd sz data... */ + 0x26, 1, 4, /* Gamma Set */ + 0xb1, 2, 9, 0xd, /* Frame Rate */ + 0xc0, 2, 8, 0, /* Power Control 1 */ + 0xc1, 1, 5, /* Power Control 2 */ + 0xc5, 2, 0x31, 0x40, /* VCOM Control 1 */ + 0xc7, 1, 0xc8, /* VCOM Offset Control */ + 0xec, 1, 0xc, /* Unknown */ + 0x3a, 1, 5, /* Interface Pixel Format */ + 0x2a, 4, 0, 0, 0, 0x7f, /* Column Address */ + 0x2b, 4, 0, 0, 0, 0x9f, /* Page Address Set */ + 0x35, 1, 0, /* Tear Effect Line On */ + 0x36, 1, 0xc8, /* Memory access Control */ + 0xb4, 1, 0, /* Display Inversion */ + 0xb7, 1, 0, /* Source Driver Direction Control */ + 0xb8, 1, 0, /* Gate Driver Direction Control */ + 0xf2, 1, 1, /* Gamma Adjustment */ + 0xe0, 15, 0x3f, 0x20, 0x1d, 0x2d, 0x26, 0x0c, 0x4b, 0xb7, + 0x39, 0x17, 0x1d, 0x16, 0x16, 0x10, 0x00, /* Positive Gamma */ + 0xe1, 15, 0x00, 0x1f, 0x21, 0x12, 0x18, 0x13, 0x34, 0x48, + 0x46, 0x08, 0x21, 0x29, 0x28, 0x2f, 0x3f, /* Negative Gamma */ + 0x29, 0, /* Display On */ + }; + + for(unsigned i = 0; i < sizeof(init_seq); ) + { + lcd_write_reg(init_seq[i], &init_seq[i + 2], init_seq[i + 1]); + i += 2 + init_seq[i + 1]; + } +} + +void lcd_init_device(void) +{ + /* the LCD seems to work at 24Mhz, so use the xtal clock with no divider */ + imx233_clkctrl_enable(CLK_PIX, false); + imx233_clkctrl_set_div(CLK_PIX, 1); + imx233_clkctrl_set_bypass(CLK_PIX, true); /* use XTAL */ + imx233_clkctrl_enable(CLK_PIX, true); + imx233_lcdif_init(); + imx233_lcdif_set_lcd_databus_width(8); + imx233_lcdif_set_timings(2, 2, 2, 2); + imx233_lcdif_enable_underflow_recover(true); + imx233_lcdif_setup_system_pins(8); + imx233_lcdif_set_byte_packing_format(0xf); /* two pixels per 32-bit word */ + + // reset device + imx233_lcdif_reset_lcd(true); + mdelay(10); + imx233_lcdif_reset_lcd(false); + mdelay(10); + imx233_lcdif_reset_lcd(true); + mdelay(150); + + lcd_init_seq(); +#ifdef HAVE_LCD_ENABLE + lcd_on = true; +#endif +} + +#ifdef HAVE_LCD_ENABLE +bool lcd_active(void) +{ + return lcd_on; +} + +static void lcd_enable_seq(bool enable) +{ + if(enable) + { + lcd_write_reg(0x11, NULL, 0); + lcd_write_reg(0x29, NULL, 0); + } + else + { + lcd_write_reg(0x28, NULL, 0); + lcd_write_reg(0x10, NULL, 0); + } +} + +void lcd_enable(bool enable) +{ + if(lcd_on == enable) + return; + + lcd_on = enable; + + if(enable) + imx233_lcdif_enable(true); + lcd_enable_seq(enable); + if(!enable) + imx233_lcdif_enable(false); + else + send_event(LCD_EVENT_ACTIVATION, NULL); +} +#endif + +void lcd_update(void) +{ + lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); +} + +void lcd_update_rect(int x, int y, int w, int h) +{ +#ifdef HAVE_LCD_ENABLE + if(!lcd_on) + return; +#endif + /* make sure the rectangle is included in the screen */ + x = MIN(x, LCD_WIDTH); + y = MIN(y, LCD_HEIGHT); + w = MIN(w, LCD_WIDTH - x); + h = MIN(h, LCD_HEIGHT - y); + + imx233_lcdif_wait_ready(); + uint32_t window = x << 8 | (x + w - 1) << 24; + lcd_write_reg(0x2a, &window, sizeof(window)); + window = y << 8 | (y + h - 1) << 24; + lcd_write_reg(0x2b, &window, sizeof(window)); + lcd_write_reg(0x2c, NULL, 0); + + imx233_lcdif_wait_ready(); + imx233_lcdif_set_data_swizzle(3); + imx233_lcdif_set_word_length(8); + /* there are two cases here: + * - either width = LCD_WIDTH and we can directly memcopy a part of lcd_framebuffer to FRAME + * and send it + * - either width != LCD_WIDTH and we have to build a contiguous copy of the rectangular area + * into FRAME before sending it (which is slower and doesn't use the hardware) + * In all cases, FRAME just acts as a temporary buffer. + * NOTE It's more interesting to do a copy to FRAME in all cases since in system mode + * the clock runs at 24MHz which provides barely 10MB/s bandwidth compared to >100MB/s + * for memcopy operations + */ + if(w == LCD_WIDTH) + { + memcpy((void *)FRAME, FBADDR(x,y), w * h * sizeof(fb_data)); + } + else + { + for(int i = 0; i < h; i++) + memcpy((fb_data *)FRAME + i * w, FBADDR(x,y + i), w * sizeof(fb_data)); + } + /* WARNING The LCDIF has a limitation on the vertical count ! In 16-bit packed mode + * (which we used, ie 16-bit per pixel, 2 pixels per 32-bit words), the v_count + * field must be a multiple of 2. Furthermore, it seems the lcd controller doesn't + * really like when both w and h are even, probably because the writes to the GRAM + * are done on several words and the controller requires dummy writes. + * The workaround is to always make sure that we send a number of pixels which is + * a multiple of 4 so that both the lcdif and the controller are happy. If any + * of w or h is odd, we will send a copy of the first pixels as dummy writes. We will + * send at most 3 bytes. We then send (w * h + 3) / 4 x 4 bytes. + */ + if(w % 2 == 1 || h % 2 == 1) + { + /* copy three pixel after the last one */ + for(int i = 0; i < 3; i++) + *((fb_data *)FRAME + w * h + i) = *((fb_data *)FRAME + i); + /* WARNING we need to update w and h to reflect the pixel count BUT it + * has no relation to w * h (it can even be 2 * prime). Hopefully, w <= 240 and + * h <= 320 so w * h <= 76800 and (w * h + 3) / 4 <= 38400 which fits into + * a 16-bit integer (horizontal count). */ + h = (w * h + 3) / 4; + w = 4; + } + imx233_lcdif_dma_send((void *)FRAME_PHYS_ADDR, w * 2, h); +} + |