| /* |
| * 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 <msm_panel.h> |
| #include <platform/gpio.h> |
| #include <debug.h> |
| #include <err.h> |
| #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; |
| } |