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touch: add missing unbind/funbind driver primitive

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Yann MAGNIN 2025-03-19 10:29:03 +01:00
parent df1cf45e98
commit 24d932906b
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GPG key ID: D82629D933EADC59
3 changed files with 49 additions and 1 deletions
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29
src/touch/i2c.c
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@ -154,6 +154,7 @@ int i2c_read_stream(void *buffer, size_t size)
#include <gint/mpu/pfc.h>
#include <gint/mpu/intc.h>
/* i2c_hpowered() - check if the module is powered */
bool i2c_hpowered(void)
{
@ -166,6 +167,8 @@ void i2c_hpoweron(void)
SH7305_POWER.MSTPCR2.I2C = 0;
SH7305_I2C.ICCR.ICE = 0;
SH7305_I2C.ICDR = 0;
SH7305_I2C.ICCL = 0x00;
SH7305_I2C.ICCH = 0x00;
}
/* i2c_hpoweroff() - power on the module */
@ -213,7 +216,10 @@ void i2c_configure(void)
SH7305_PFC.PJCR.P4MD = 0b00;
// configure I2C module
SH7305_I2C.ICCR.byte &= 0x7f;
SH7305_I2C.ICCR.ICE = 0;
SH7305_I2C.ICDR = 0;
SH7305_I2C.ICCL = 0x00;
SH7305_I2C.ICCH = 0x00;
SH7305_I2C.ICSR.byte = 0x00;
SH7305_I2C.ICIC.byte = 0x00;
@ -225,3 +231,24 @@ void i2c_configure(void)
SH7305_INTC._->IPRH.I2C = 1;
SH7305_INTC.MSKCLR->IMR7 |= 0xf0;
}
/* i2c_unbin() - unbind from gint to casio */
void i2c_unbin(void)
{
_i2c_request_await();
}
/* i2c_funbin() - funbind from casio to gint */
void i2c_funbin(void)
{
if (i2c_hpowered() == false)
return;
// fixme : avoid force terminate
// We cannot easily know the state of Casio's driver since they use
// an state machine to work, and finding the current state require a
// lot of hardcoded OS-specific offsets information. So, for now,
// force terminate the transaction and disable the module to avoid
// any error
SH7305_I2C.ICCR.ICE = 0;
SH7305_I2C.ICDR = 0;
}

6
src/touch/i2c.h
View file

@ -140,4 +140,10 @@ extern void i2c_hpoweron(void);
/* i2c_hpoweroff() - power off the module */
extern void i2c_hpoweroff(void);
/* i2c_funbin() - funbind from casio to gint */
extern void i2c_funbin(void);
/* i2c_unbin() - unbind from gint to casio */
extern void i2c_unbin(void);
#endif /* GINT_TOUCH_I2C_H */

15
src/touch/touch.c
View file

@ -129,6 +129,19 @@ static void _touch_hpoweroff(void)
i2c_hpoweroff();
}
/* _touch_unbin() - unbind from gint to casio */
static void _touch_unbin(void)
{
i2c_unbin();
}
/* _touch_funbin() - funbind from casio to gint */
static void _touch_funbin(void)
{
i2c_funbin();
}
/* drv_touch - touch-screen driver declaration */
gint_driver_t drv_touch = {
.name = "TOUCH",
.configure = _touch_configure,
@ -137,6 +150,8 @@ gint_driver_t drv_touch = {
.hpowered = _touch_hpowered,
.hpoweron = _touch_hpoweron,
.hpoweroff = _touch_hpoweroff,
.unbind = _touch_unbin,
.funbind = _touch_funbin,
.state_size = sizeof(touch_state_t),
};
GINT_DECLARE_DRIVER(16, drv_touch);