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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-01-11 Lyons first version
* 2021-06-24 RiceChen refactor
* 2021-07-28 songchao add cmd
*/
#include <rthw.h>
#include <rtdevice.h>
#ifdef BSP_USING_LCD
#define LOG_TAG "drv.lcd"
#include <drv_log.h>
#include "fsl_iomuxc.h"
#include "drv_lcd.h"
#include <lwp_user_mm.h>
static struct imx6ull_lcd_config _lcd_config = LCD_BUS_CONFIG;
static struct imx6ull_lcd_bus _lcd_obj;
static rt_err_t imx6ull_elcd_init(rt_device_t device)
{
struct imx6ull_lcd_bus *elcd_dev = RT_NULL;
clock_video_pll_config_t pll_config;
elcdif_rgb_mode_config_t lcd_config;
RT_ASSERT(device != RT_NULL);
elcd_dev = (struct imx6ull_lcd_bus *)device;
ELCDIF_Reset(elcd_dev->config->ELCDIF);
pll_config.loopDivider = 32;
pll_config.postDivider = LCD_PLL_DIV;
pll_config.numerator = 0;
pll_config.denominator = 0;
CLOCK_InitVideoPll(&pll_config);
lcd_config.hfp = LCD_HFP;
lcd_config.vfp = LCD_VFP;
lcd_config.hbp = LCD_HBP;
lcd_config.vbp = LCD_VBP;
lcd_config.hsw = LCD_HSW;
lcd_config.vsw = LCD_VSW;
lcd_config.polarityFlags = kELCDIF_DataEnableActiveHigh |
kELCDIF_VsyncActiveLow |
kELCDIF_HsyncActiveLow |
kELCDIF_DriveDataOnRisingClkEdge;
switch(elcd_dev->info.pixel_format)
{
case RTGRAPHIC_PIXEL_FORMAT_RGB888:
lcd_config.pixelFormat = kELCDIF_PixelFormatRGB888;
break;
case RTGRAPHIC_PIXEL_FORMAT_RGB565:
lcd_config.pixelFormat = kELCDIF_PixelFormatRGB565;
break;
default:
LOG_E("not support this pixel_format %d\n",elcd_dev->info.pixel_format);
return RT_ERROR;
}
lcd_config.panelWidth = elcd_dev->info.width;
lcd_config.panelHeight = elcd_dev->info.height;
lcd_config.bufferAddr = (uint32_t)elcd_dev->fb_phy;
lcd_config.dataBus = kELCDIF_DataBus24Bit;
ELCDIF_RgbModeInit(elcd_dev->config->ELCDIF, &lcd_config);
ELCDIF_RgbModeStart(elcd_dev->config->ELCDIF);
return RT_EOK;
}
static rt_err_t imx6ull_elcd_control(rt_device_t device, int cmd, void *args)
{
struct imx6ull_lcd_bus *elcd_dev = RT_NULL;
int mem_size = 0;
RT_ASSERT(device != RT_NULL);
elcd_dev = (struct imx6ull_lcd_bus *)device;
switch(cmd)
{
case RTGRAPHIC_CTRL_RECT_UPDATE:
{
mem_size = elcd_dev->info.width * elcd_dev->info.height * elcd_dev->info.bits_per_pixel / 8;
rt_hw_cpu_dcache_ops(RT_HW_CACHE_FLUSH, (void *)(_lcd_obj.info.framebuffer), mem_size);
break;
}
case RTGRAPHIC_CTRL_POWERON:
{
rt_pin_write(IMX6ULL_LCD_BL_PIN, PIN_HIGH);
break;
}
case RTGRAPHIC_CTRL_POWEROFF:
{
rt_pin_write(IMX6ULL_LCD_BL_PIN, PIN_LOW);
break;
}
case RTGRAPHIC_CTRL_GET_INFO:
{
struct lcd_info *info = (struct lcd_info *)args;
RT_ASSERT(info != RT_NULL);
rt_memcpy(&info->graphic, &elcd_dev->info, sizeof(struct rt_device_graphic_info));
info->screen.shamem_len = elcd_dev->info.width * elcd_dev->info.height * elcd_dev->info.bits_per_pixel / 8;
info->screen.shamem_start = (rt_uint32_t)lwp_map_user_phy(lwp_self(), RT_NULL,
elcd_dev->fb_phy,
info->screen.shamem_len, 1);
break;
}
case RTGRAPHIC_CTRL_SET_MODE:
{
break;
}
case FBIOGET_FSCREENINFO:
{
struct fb_fix_screeninfo *info = (struct fb_fix_screeninfo *)args;
rt_memcpy(info->id, elcd_dev->config->name, (strlen(elcd_dev->config->name)+1));
info->smem_len = elcd_dev->info.width * elcd_dev->info.height * elcd_dev->info.bits_per_pixel / 8;
info->smem_start = (rt_uint32_t)lwp_map_user_phy(lwp_self(), RT_NULL,
elcd_dev->fb_phy,
info->smem_len, 1);
info->line_length = elcd_dev->info.width * 2;
break;
}
case FBIOGET_VSCREENINFO:
{
struct fb_var_screeninfo *info = (struct fb_var_screeninfo *)args;
info->bits_per_pixel = elcd_dev->info.bits_per_pixel;
info->xres = elcd_dev->info.width;
info->yres = elcd_dev->info.height;
break;
}
}
return RT_EOK;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops elcd_ops =
{
imx6ull_elcd_init,
RT_NULL,
RT_NULL,
RT_NULL,
RT_NULL,
imx6ull_elcd_control,
};
#endif
int rt_hw_elcd_init(void)
{
rt_err_t ret = 0;
_lcd_config.ELCDIF = (LCDIF_Type *)imx6ull_get_periph_vaddr((rt_uint32_t)(_lcd_config.ELCDIF));
_lcd_config.lcd_mux_base = (rt_uint32_t)imx6ull_get_periph_vaddr((rt_uint32_t)(_lcd_config.lcd_mux_base));
_lcd_config.lcd_cfg_base = (rt_uint32_t)imx6ull_get_periph_vaddr((rt_uint32_t)(_lcd_config.lcd_cfg_base));
for(int i = 0; i < LCD_GPIO_MAX; i++)
{
IOMUXC_SetPinMux((_lcd_config.lcd_mux_base + i * 4),
0x0U, 0x0U, 0x0U, (_lcd_config.lcd_cfg_base + i * 4), 0);
IOMUXC_SetPinConfig((_lcd_config.lcd_mux_base + i * 4),
0x0U, 0x0U, 0x0U, (_lcd_config.lcd_cfg_base + i * 4), 0xB9);
}
CLOCK_EnableClock(_lcd_config.apd_clk_name);
CLOCK_EnableClock(_lcd_config.pix_clk_name);
_lcd_obj.config = &_lcd_config;
_lcd_obj.fb_virt = rt_pages_alloc(rt_page_bits(LCD_BUF_SIZE));
_lcd_obj.fb_phy = _lcd_obj.fb_virt + PV_OFFSET;
LOG_D("fb address => 0x%08x\n", _lcd_obj.fb_phy);
if(_lcd_obj.fb_phy == RT_NULL)
{
LOG_E("initialize frame buffer failed!\n");
return -RT_ERROR;
}
_lcd_obj.info.width = LCD_WIDTH;
_lcd_obj.info.height = LCD_HEIGHT;
_lcd_obj.info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB888;
_lcd_obj.info.bits_per_pixel = LCD_BITS_PER_PIXEL;
_lcd_obj.info.framebuffer = (void *)_lcd_obj.fb_virt;
_lcd_obj.parent.type = RT_Device_Class_Graphic;
#ifdef RT_USING_DEVICE_OPS
_lcd_obj.parent.ops = &elcd_ops;
#else
_lcd_obj.parent.init = imx6ull_elcd_init;
_lcd_obj.parent.open = RT_NULL;
_lcd_obj.parent.close = RT_NULL;
_lcd_obj.parent.read = RT_NULL;
_lcd_obj.parent.write = RT_NULL;
_lcd_obj.parent.control = imx6ull_elcd_control;
#endif
_lcd_obj.parent.user_data = (void *)&_lcd_obj.info;
ret = rt_device_register(&_lcd_obj.parent, _lcd_obj.config->name, RT_DEVICE_FLAG_RDWR);
/* LCD_BL */
rt_pin_mode(IMX6ULL_LCD_BL_PIN, PIN_MODE_OUTPUT);
rt_pin_write(IMX6ULL_LCD_BL_PIN, PIN_HIGH);
rt_memset((rt_uint8_t *)_lcd_obj.fb_virt, 0xff, LCD_BUF_SIZE);
return ret;
}
INIT_DEVICE_EXPORT(rt_hw_elcd_init);
#endif
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