/* * Copyright (c) 2012, The Linux Foundation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of The Linux Foundation nor * the names of its contributors may be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include "lcdc_truly.h" extern void spi_bit_bang_write(uint8_t, uint8_t, uint8_t, uint8_t); static char data1[] = { 0xff, 0x83, 0x57, }; static char data2[] = { 0x03, }; static char data3[] = { 0x00, 0x13, 0x1C, 0x1C, 0x83, 0x48, }; static char data4[] = { 0x43, 0x06, 0x06, 0x06, }; static char data5[] = { 0x53, }; static char data6[] = { 0x02, 0x40, 0x00, 0x2a, 0x2a, 0x0d, 0x3f, }; static char data7[] = { 0x70, 0x50, 0x01, 0x3c, 0xe8, 0x08, }; static char data8[] = { 0x17, 0x0f, }; static char data9[] = { 0x60}; static char data10[] = { 0x00, 0x13, 0x1a, 0x29, 0x2d, 0x41, 0x49, 0x52, 0x48, 0x41, 0x3c, 0x33, 0x30, 0x1c, 0x19, 0x03, 0x00, 0x13, 0x1a, 0x29, 0x2d, 0x41, 0x49, 0x52, 0x48, 0x41, 0x3c, 0x33, 0x31, 0x1c, 0x19, 0x03, 0x00, 0x01, }; static char data11[] = { 0x40, }; static void lcdc_truly_panel_power(int on) { uint32_t func = 0; uint32_t pull = 0; uint32_t drv = 0; uint32_t dir = 0; dprintf(SPEW, "lcdc_truly_panel_power on = %d\n", on); if (on) { func = 0; dir = GPIO_OUTPUT; pull = GPIO_NO_PULL; drv = GPIO_2MA; /* config SPI, RESET and Backlight */ gpio_tlmm_config(GPIO_CFG(SPI_MOSI, func, dir, pull, drv), 0); gpio_tlmm_config(GPIO_CFG(SPI_SCLK, func, dir, pull, drv), 0); gpio_tlmm_config(GPIO_CFG(SPI_CS, func, dir, pull, drv), 0); gpio_tlmm_config(GPIO_CFG(BACKLIGHT_EN, func, dir, pull, drv), 0); gpio_tlmm_config(GPIO_CFG(DISPLAY_RESET, func, dir, pull, drv), 0); gpio_tlmm_config(GPIO_CFG(LCD_LDO_2V8, func, dir, pull, drv), 0); gpio_tlmm_config(GPIO_CFG(LCD_LDO_1V8, func, dir, pull, drv), 0); gpio_config(SPI_MOSI, GPIO_OUTPUT); gpio_config(SPI_SCLK, GPIO_OUTPUT); gpio_config(SPI_CS, GPIO_OUTPUT); gpio_config(BACKLIGHT_EN, GPIO_OUTPUT); gpio_config(DISPLAY_RESET, GPIO_OUTPUT); gpio_config(LCD_LDO_2V8, GPIO_OUTPUT); gpio_config(LCD_LDO_1V8, GPIO_OUTPUT); /* turn on backlight */ gpio_set(BACKLIGHT_EN, 1); /* turn on power */ gpio_set(LCD_LDO_1V8, 1); gpio_set(LCD_LDO_2V8, 1); /* reset */ gpio_set(DISPLAY_RESET, 1); /* * H/w requires delay between toggle * reset pin */ mdelay(20); gpio_set(DISPLAY_RESET, 0); mdelay(20); gpio_set(DISPLAY_RESET, 1); mdelay(20); } else { /* turn off backlight */ gpio_set(BACKLIGHT_EN, 0); gpio_set(DISPLAY_RESET, 0); /* turn off power */ gpio_set(LCD_LDO_1V8, 0); gpio_set(LCD_LDO_2V8, 0); } return; } static int truly_spi_write(char cmd, char *data, int num) { int i; gpio_set(SPI_CS, 0); /* cs low */ /* command byte first */ spi_bit_bang_write(SPI_SCLK, SPI_MOSI, 0, cmd); /* followed by parameter bytes */ for(i = 0; i < num; i++) { if(data) spi_bit_bang_write(SPI_SCLK, SPI_MOSI, 1, data[i]); } gpio_set(SPI_MOSI, 1); /* mosi high */ gpio_set(SPI_CS, 1); /* cs high */ /* * H/W needs delay for gpio's to turn high */ udelay(10); return 0; } void lcdc_truly_disp_on(void) { int i; dprintf(SPEW, "lcdc_truly_disp_on\n"); gpio_set(SPI_CS, 1); /* cs high */ /* * This function uses delays as defined by the panel * vendor before writing to registers */ truly_spi_write(0xb9, data1, sizeof(data1)); mdelay(20); truly_spi_write(0xcc, data2, sizeof(data2)); truly_spi_write(0xb1, data3, sizeof(data3)); truly_spi_write(0xb3, data4, sizeof(data4)); truly_spi_write(0xb6, data5, sizeof(data5)); truly_spi_write(0xb4, data6, sizeof(data6)); truly_spi_write(0xc0, data7, sizeof(data7)); truly_spi_write(0xe3, data8, sizeof(data8)); truly_spi_write(0x3a, data9, sizeof(data9)); truly_spi_write(0xe0, data10, sizeof(data10)); truly_spi_write(0x36, data11, sizeof(data11)); truly_spi_write(0x11, NULL, 0); mdelay(150); truly_spi_write(0x29, NULL, 0); mdelay(25); } void lcdc_truly_disp_off(void) { dprintf(SPEW, "lcdc_truly_disp_off\n"); truly_spi_write(0x28, NULL, 0); mdelay(5); truly_spi_write(0x10, NULL, 0); } int lcdc_truly_panel_on(int on) { dprintf(SPEW, "lcdc_truly_panel_on\n"); if (on) { lcdc_truly_panel_power(1); lcdc_truly_disp_on(); } else { lcdc_truly_panel_power(0); lcdc_truly_disp_off(); } return NO_ERROR; } int lcdc_truly_hvga_on() { return NO_ERROR; } int lcdc_truly_hvga_off() { return NO_ERROR; } void lcdc_truly_hvga_init(struct msm_panel_info *pinfo) { if (!pinfo) return; pinfo->xres = 320; pinfo->yres = 480; pinfo->type = LCDC_PANEL; pinfo->wait_cycle = 0; pinfo->bpp = 16; pinfo->clk_rate = 10240000; pinfo->lcdc.h_pulse_width = 8; pinfo->lcdc.h_back_porch = 16; pinfo->lcdc.h_front_porch = 4; pinfo->lcdc.hsync_skew = 0; pinfo->lcdc.v_pulse_width = 1; pinfo->lcdc.v_back_porch = 7; pinfo->lcdc.v_front_porch = 3; pinfo->on = lcdc_truly_hvga_on; pinfo->off = lcdc_truly_hvga_off; return; }