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fuze+: implement basic touchpad driver

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30637 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Amaury Pouly 2011-10-02 14:44:31 +00:00
parent 30f333108c
commit 09b4c7667e
1 changed files with 92 additions and 2 deletions
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94
firmware/target/arm/imx233/sansa-fuzeplus/button-fuzeplus.c
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@ -166,6 +166,87 @@ void button_debug_screen(void)
}
}
struct button_area_t
{
/* define a rectangle region */
int lx, ly;
int rx, ry;
int button;
};
static struct button_area_t button_areas[] =
{
{1300, 600, 1700, 1100, BUTTON_SELECT},
{500, 600, 1100, 1100, BUTTON_LEFT},
{1900, 600, 2500, 1100, BUTTON_RIGHT},
{1300, 0, 1700, 400, BUTTON_DOWN},
{1300, 1300, 1700, 1800, BUTTON_UP},
{2500, 1600, 2900, 1800, BUTTON_PLAYPAUSE},
{300, 1600, 500, 1800, BUTTON_BACK},
{0, 0, 0, 0, 0},
};
static int touchpad_btns = 0;
static long rmi_stack [DEFAULT_STACK_SIZE/sizeof(long)];
static const char rmi_thread_name[] = "rmi";
static struct semaphore rmi_sema;
static int find_button(int x, int y)
{
struct button_area_t *area = button_areas;
for(; area->button != 0; area++)
{
if(area->lx <= x && x <= area->rx &&
area->ly <= y && y <= area->ry)
return area->button;
}
return 0;
}
int touchpad_read_device(void)
{
return touchpad_btns;
}
void rmi_attn_cb(int bank, int pin)
{
(void) bank;
(void) pin;
semaphore_release(&rmi_sema);
}
void rmi_thread(void)
{
semaphore_init(&rmi_sema, 1, 0);
while(1)
{
imx233_setup_pin_irq(0, 27, true, true, false, &rmi_attn_cb);
semaphore_wait(&rmi_sema, TIMEOUT_BLOCK);
/* clear interrupt */
rmi_read_single(RMI_INTERRUPT_REQUEST);
/* read data */
union
{
unsigned char data[10];
struct
{
struct rmi_2d_absolute_data_t absolute;
struct rmi_2d_relative_data_t relative;
struct rmi_2d_gesture_data_t gesture;
}s;
}u;
rmi_read(RMI_DATA_REGISTER(0), 10, u.data);
int absolute_x = u.s.absolute.x_msb << 8 | u.s.absolute.x_lsb;
int absolute_y = u.s.absolute.y_msb << 8 | u.s.absolute.y_lsb;
int nr_fingers = u.s.absolute.misc & 7;
if(nr_fingers == 0)
touchpad_btns = 0;
else
touchpad_btns = find_button(absolute_x, absolute_y);
}
}
void button_init_device(void)
{
/* Synaptics TouchPad information:
@ -192,7 +273,7 @@ void button_init_device(void)
* The B0P26 line seems to be related to the touchpad
*/
/* for touchpad ? */
/* touchpad CE ? */
imx233_set_pin_function(0, 26, PINCTRL_FUNCTION_GPIO);
imx233_enable_gpio_output(0, 26, false);
imx233_set_pin_drive_strength(0, 26, PINCTRL_DRIVE_8mA);
@ -204,12 +285,21 @@ void button_init_device(void)
RMI_2D_GESTURE_PRESS_TIME_300MS |
RMI_2D_GESTURE_FLICK_DIST_4MM << RMI_2D_GESTURE_FLICK_DIST_BP |
RMI_2D_GESTURE_FLICK_TIME_700MS << RMI_2D_GESTURE_FLICK_TIME_BP);
create_thread(rmi_thread, rmi_stack, sizeof(rmi_stack), 0,
rmi_thread_name IF_PRIO(, PRIORITY_USER_INTERFACE) IF_COP(, CPU));
}
#else
void button_init_device(void)
{
}
int touchpad_read_device(void)
{
return 0;
}
#endif
@ -230,5 +320,5 @@ int button_read_device(void)
case 3: res |= BUTTON_VOL_UP; break;
default: break;
}
return res;
return res | touchpad_read_device();
}