From 9392d036c4ee29c251dd1e89cf8ced653972b6fd Mon Sep 17 00:00:00 2001 From: Amaury Pouly Date: Wed, 25 Sep 2013 14:29:00 +0200 Subject: Initial commit for the sony NWZ-E360 and NWZ-E370 Change-Id: I52d21e136a98eaf481615d641795cf7ecf325465 --- firmware/target/arm/imx233/sony-nwz/lcd-nwze360.c | 259 ++++++++++++++++++++++ 1 file changed, 259 insertions(+) create mode 100644 firmware/target/arm/imx233/sony-nwz/lcd-nwze360.c (limited to 'firmware/target/arm/imx233/sony-nwz/lcd-nwze360.c') diff --git a/firmware/target/arm/imx233/sony-nwz/lcd-nwze360.c b/firmware/target/arm/imx233/sony-nwz/lcd-nwze360.c new file mode 100644 index 0000000000..2a913103c2 --- /dev/null +++ b/firmware/target/arm/imx233/sony-nwz/lcd-nwze360.c @@ -0,0 +1,259 @@ +/*************************************************************************** + * __________ __ ___. + * 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 /* off_t */ +#include +#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, uint8_t data) +{ + imx233_lcdif_wait_ready(); + imx233_lcdif_set_data_swizzle(0); + imx233_lcdif_set_word_length(8); + imx233_lcdif_pio_send(false, 1, ®); + if(reg != 0x22) + imx233_lcdif_pio_send(true, 1, &data); +} + +static void lcd_init_seq(void) +{ + lcd_write_reg(0xea, 0); + lcd_write_reg(0xeb, 0x20); + lcd_write_reg(0xec, 0xc); + lcd_write_reg(0xed, 0xc4); + lcd_write_reg(0xe8, 0x38); + lcd_write_reg(0xe9, 0xe); + lcd_write_reg(0xf1, 1); + lcd_write_reg(0xf2, 8); + lcd_write_reg(0x2e, 0x86); + lcd_write_reg(0x29, 0xff); + lcd_write_reg(0xe4, 1); + lcd_write_reg(0xe5, 0x20); + lcd_write_reg(0xe7, 1); + lcd_write_reg(0x40, 0); + lcd_write_reg(0x41, 0); + lcd_write_reg(0x42, 0); + lcd_write_reg(0x43, 0x14); + lcd_write_reg(0x44, 0x14); + lcd_write_reg(0x45, 0x28); + lcd_write_reg(0x46, 0x11); + lcd_write_reg(0x47, 0x57); + lcd_write_reg(0x48, 5); + lcd_write_reg(0x49, 0x16); + lcd_write_reg(0x4a, 0x19); + lcd_write_reg(0x4b, 0x1a); + lcd_write_reg(0x4c, 0x1a); + lcd_write_reg(0x50, 0x17); + lcd_write_reg(0x51, 0x2b); + lcd_write_reg(0x52, 0x2b); + lcd_write_reg(0x53, 0x3f); + lcd_write_reg(0x54, 0x3f); + lcd_write_reg(0x55, 0x3f); + lcd_write_reg(0x56, 0x28); + lcd_write_reg(0x57, 0x6e); + lcd_write_reg(0x58, 5); + lcd_write_reg(0x59, 5); + lcd_write_reg(0x5a, 6); + lcd_write_reg(0x5b, 9); + lcd_write_reg(0x5c, 0x1a); + lcd_write_reg(0x5d, 0xcc); + lcd_write_reg(0x1b, 0x1b); + lcd_write_reg(0x1A, 1); + lcd_write_reg(0x24, 0x2f); // something special here + lcd_write_reg(0x25, 0x57); // something special here + lcd_write_reg(0x23, 0x8a); + lcd_write_reg(0x2f, 1); + lcd_write_reg(0x60, 0); + lcd_write_reg(0x16, 8); + lcd_write_reg(0x18, 0x36); // something special here + lcd_write_reg(0x19, 1); + udelay(5000); + lcd_write_reg(1, 0); + lcd_write_reg(0x1f, 0x88); + udelay(5000); + lcd_write_reg(0x1f, 0x80); + udelay(5000); + lcd_write_reg(0x1f, 0x90); + udelay(5000); + lcd_write_reg(0x1f, 0xD0); + udelay(5000); + lcd_write_reg(0x17, 6); + lcd_write_reg(0x37, 0); + lcd_write_reg(0x28, 0x38); + udelay(40000); + lcd_write_reg(0x28, 0x3c); +} + +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(1, 1, 1, 1); + 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(0x1f, 0xd1); + lcd_write_reg(1, 0x40); + lcd_write_reg(1, 0xc0); + lcd_write_reg(0x19, 1); + } + else + { + lcd_write_reg(0x19, 0x81); + udelay(5000); + lcd_write_reg(1, 0x40); + udelay(20000); + lcd_write_reg(1, 0); + lcd_write_reg(0x1f, 0xd0); + } +} + +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(); + lcd_write_reg(2, x >> 8); + lcd_write_reg(3, x & 0xff); + lcd_write_reg(4, (x + w - 1) >> 8); + lcd_write_reg(5, (x + w - 1) & 0xff); + lcd_write_reg(6, y >> 8); + lcd_write_reg(7, y & 0xff); + lcd_write_reg(8, (y + h - 1) >> 8); + lcd_write_reg(9, (y + h - 1) & 0xff); + lcd_write_reg(0x22, 0); + + imx233_lcdif_wait_ready(); + imx233_lcdif_set_word_length(16); + /* 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, h); +} + -- cgit v1.2.3