recipes/linux/linux-jlime-jornada7xx-2.6.17/Newfile-Jornada720_ts.patch

   1 --- linux-2.6.17-vanilla/drivers/input/touchscreen/jornada720_ts.c      1970-01-01 00:00:00.000000000 +0000
   2 +++ linux-2.6.17/drivers/input/touchscreen/jornada720_ts.c      2006-07-10 17:06:11.000000000 +0000
   3 @@ -0,0 +1,103 @@
   4 +/*
   5 + * Jornada 720 touchscreen interface based on Jornada 56x interface
   6 + */
   7 +
   8 +#include <linux/input.h>
   9 +#include <linux/module.h>
  10 +#include <linux/kernel.h>
  11 +#include <linux/init.h>
  12 +#include <linux/delay.h>
  13 +#include <linux/slab.h>
  14 +#include <linux/errno.h>
  15 +#include <linux/interrupt.h>
  16 +
  17 +#include <asm/arch/hardware.h>
  18 +#include <asm/arch/jornada720.h>
  19 +#include <asm/irq.h>
  20 +#include <asm/mach/irq.h>
  21 +
  22 +MODULE_AUTHOR("Alex Lange <chicken@handhelds.org>");
  23 +MODULE_DESCRIPTION("Jornada 720 touchscreen driver");
  24 +MODULE_LICENSE("GPL");
  25 +
  26 +static char jornada720_ts_name[] = "Jornada 720 touchscreen";
  27 +
  28 +static struct input_dev *dev;
  29 +
  30 +static irqreturn_t jornada720_mouse_interrupt(int irq, void *dev_id, struct pt_regs *regs)
  31 +{
  32 +       int down;
  33 +       int X[3], Y[3], high_x, high_y, x, y;
  34 +
  35 +       udelay(1);
  36 +
  37 +       down = ( (GPLR & GPIO_JORNADA720_MOUSE) == 0);
  38 +
  39 +       if(!down) {
  40 +               input_report_key(dev, BTN_TOUCH, down); /* report a pen up */
  41 +               input_report_abs(dev, ABS_PRESSURE, 0);
  42 +               input_sync(dev);
  43 +               return IRQ_HANDLED;
  44 +       }
  45 +
  46 +       /* read x & y data from mcu interface and pass it on */
  47 +
  48 +       jornada720_mcu_start(MCU_GetTouchSamples);
  49 +       X[0] = jornada720_mcu_read();
  50 +       X[1] = jornada720_mcu_read();
  51 +       X[2] = jornada720_mcu_read();
  52 +       Y[0] = jornada720_mcu_read();
  53 +       Y[1] = jornada720_mcu_read();
  54 +       Y[2] = jornada720_mcu_read();
  55 +       high_x = jornada720_mcu_read(); /* msbs of samples */
  56 +       high_y = jornada720_mcu_read();
  57 +       jornada720_mcu_end();
  58 +
  59 +       X[0] |= (high_x & 3) << 8;
  60 +       X[1] |= (high_x & 0xc) << 6;
  61 +       X[2] |= (high_x & 0x30) << 4;
  62 +
  63 +       Y[0] |= (high_y & 3) << 8;
  64 +       Y[1] |= (high_y & 0xc) << 6;
  65 +       Y[2] |= (high_y & 0x30) << 4;
  66 +
  67 +        /* simple averaging filter */
  68 +       x = (X[0] + X[1] + X[2])/3;
  69 +       y = (Y[0] + Y[1] + Y[2])/3;
  70 +
  71 +       input_report_key(dev, BTN_TOUCH, down);
  72 +       input_report_abs(dev, ABS_X, x);
  73 +       input_report_abs(dev, ABS_Y, y);
  74 +       input_report_abs(dev, ABS_PRESSURE, 1);
  75 +       input_sync(dev);
  76 +
  77 +       return IRQ_HANDLED;
  78 +
  79 +}
  80 +
  81 +static int __init jornada720_ts_init(void)
  82 +{
  83 +       printk("jornada720_ts: Jornada 720 touchscreen\n");
  84 +
  85 +       dev = input_allocate_device();
  86 +       dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
  87 +       dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
  88 +       dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
  89 +
  90 +       dev->absmin[ABS_X] = 270; dev->absmin[ABS_Y] = 180;
  91 +       dev->absmax[ABS_X] = 3900;  dev->absmax[ABS_Y] = 3700;
  92 +
  93 +       dev->name = jornada720_ts_name;
  94 +
  95 +       if (request_irq(GPIO_JORNADA720_MOUSE_IRQ, jornada720_mouse_interrupt, SA_INTERRUPT, "Jornada720 Mouse", NULL))
  96 +               printk("Unable to grab Jornada 720 touchscreen IRQ!\n");
  97 +
  98 +       set_irq_type(GPIO_JORNADA720_MOUSE_IRQ, IRQT_RISING);
  99 +
 100 +       input_register_device(dev);
 101 +
 102 +       return 0;
 103 +}
 104 +
 105 +module_init(jornada720_ts_init);
 106 +