linux 触摸屏驱动编写

  drivers/input 

  obj-$(CONFIG_INPUT)   += input-core.o   input-core-y := input.o input-compat.o input-mt.o ff-core.o      obj-$(CONFIG_INPUT_TOUCHSCREEN) += touchscreen/ 

  config TOUCHSCREEN_S3C2410     tristate "Samsung S3C2410/generic touchscreen input driver"     depends on ARCH_S3C24XX || SAMSUNG_DEV_TS     depends on S3C_ADC     help      Say Y here if you have the s3c2410 touchscreen.         If unsure, say N.         To compile this driver as a module, choose M here: the      module will be called s3c2410_ts. 

  obj-$(CONFIG_TOUCHSCREEN_S3C2410)  += s3c2410_ts.o 

  static const struct platform_device_id s3cts_driver_ids[] = {     { "s3c2410-ts", 0 },     { "s3c2440-ts", 0 },     { "s3c64xx-ts", FEAT_PEN_IRQ },     { }   };   MODULE_DEVICE_TABLE(platform, s3cts_driver_ids);      static struct platform_driver s3c_ts_driver = {     .driver     = {       .name  = "samsung-ts",   #ifdef CONFIG_PM       .pm = &s3c_ts_pmops,   #endif     },     .id_table  = s3cts_driver_ids,     .probe   = s3c2410ts_probe,     .remove   = s3c2410ts_remove,   };   module_platform_driver(s3c_ts_driver);   

  ts.client = s3c_adc_register(pdev, s3c24xx_ts_select,            s3c24xx_ts_conversion, 1);   if (IS_ERR(ts.client)) {     dev_err(dev, "failed to register adc clientn");     ret = PTR_ERR(ts.client);     goto err_iomap;   } 

  ret = request_irq(ts.irq_tc, stylus_irq, 0,        "s3c2410_ts_pen", ts.input);