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嵌入式开发板Linux下的驱动架构是平台数据和平台驱动相对应的，把平台数据添加到系统核心，再把平台驱动添加到系统核心，LCD控制器采取这种架构了,飞凌的 OK210,OK210-A开发板（Cortex-A8 S5PV210）结构如下
1平台数据
static struct s3c_platform_fb lte480wv_fb_data __initdata = {
.hw_ver = 0x62,
.nr_wins = 5,
.default_win = CONFIG_FB_S3C_DEFAULT_WINDOW, //#define CONFIG_FB_S3C_DEFAULT_WINDOW 2
.swap = FB_SWAP_WORD | FB_SWAP_HWORD,//
//#define FB_SWAP_WORD (1 << 24)
//#define FB_SWAP_HWORD (1 << 16)
.lcd =
.cfg_gpio = lte480wv_cfg_gpio,
.backlight_on = lte480wv_backlight_on,
.backlight_onoff = lte480wv_backlight_off,
.reset_lcd = lte480wv_reset_lcd,
};
static struct s3cfb_lcd lte480wv = {
.width = 800,
.height = 480,
.bpp = 16,
.freq = 70,
.timing = {
.h_fp = 210,
.h_bp = 16,
.h_sw = 30,
.v_fp = 22,
.v_fpe = 1,
.v_bp = 10,
.v_bpe = 1,
.v_sw = 13,
},
.polarity = {
.rise_vclk = 0,
.inv_hsync = 1,
.inv_vsync = 1,
.inv_vden = 0,
},
};
平台资源
static struct resource s3cfb_resource[] = {
[0] = {
.start = S5P_PA_LCD,
.end = S5P_PA_LCD + S5P_SZ_LCD - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_LCD1,
.end = IRQ_LCD1,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = IRQ_LCD0,
.end = IRQ_LCD0,
.flags = IORESOURCE_IRQ,
},
};
static u64 fb_dma_mask = 0xffffffffUL;
struct platform_device s3c_device_fb = {
.name = "s3cfb",
.id = -1,
.num_resources = ARRAY_SIZE(s3cfb_resource),
.resource = s3cfb_resource,
.dev = {
.dma_mask = &fb_dma_mask,
.coherent_dma_mask = 0xffffffffUL
}
};
平台驱动
s3cfb_probe 函数中调用过程
以上就是针对飞凌嵌入式 三星S5PV210（Cortex-A8）开发板的分析，更多产品信息请访问www.forlinx.com。
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