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Differential D25118 Diff 75165 head/sys/arm/ti/ti_adc.c

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head/sys/arm/ti/ti_adc.c

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#include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/ofw_bus_subr.h>
#ifdef EVDEV_SUPPORT #ifdef EVDEV_SUPPORT
#include <dev/evdev/input.h> #include <dev/evdev/input.h>
#include <dev/evdev/evdev.h> #include <dev/evdev/evdev.h>
#endif #endif
#include <arm/ti/ti_prcm.h> #include <arm/ti/ti_sysc.h>
#include <arm/ti/ti_adcreg.h> #include <arm/ti/ti_adcreg.h>
#include <arm/ti/ti_adcvar.h> #include <arm/ti/ti_adcvar.h>
#undef DEBUG_TSC #undef DEBUG_TSC
#define DEFAULT_CHARGE_DELAY 0x400 #define DEFAULT_CHARGE_DELAY 0x400
#define STEPDLY_OPEN 0x98 #define STEPDLY_OPEN 0x98
▲ Show 20 Lines • Show All 749 Lines • ▼ Show 20 Linesti_adc_attach(device_t dev)
sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE); RF_ACTIVE);
if (!sc->sc_mem_res) { if (!sc->sc_mem_res) {
device_printf(dev, "cannot allocate memory window\n"); device_printf(dev, "cannot allocate memory window\n");
return (ENXIO); return (ENXIO);
} }
/* Activate the ADC_TSC module. */ /* Activate the ADC_TSC module. */
err = ti_prcm_clk_enable(TSC_ADC_CLK); err = ti_sysc_clock_enable(device_get_parent(dev));
if (err) if (err)
return (err); return (err);
rid = 0; rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE); RF_ACTIVE);
if (!sc->sc_irq_res) { if (!sc->sc_irq_res) {
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
device_printf(dev, "cannot allocate interrupt\n"); device_printf(dev, "cannot allocate interrupt\n");
return (ENXIO); return (ENXIO);
} }
if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE, if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
NULL, ti_adc_intr, sc, &sc->sc_intrhand) != 0) { NULL, ti_adc_intr, sc, &sc->sc_intrhand) != 0) {
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
device_printf(dev, "Unable to setup the irq handler.\n"); device_printf(dev, "Unable to setup the irq handler.\n");
return (ENXIO); return (ENXIO);
} }
/* Check the ADC revision. */ /* Check the ADC revision. */
rev = ADC_READ4(sc, ADC_REVISION); rev = ADC_READ4(sc, ti_sysc_get_rev_address_offset_host(device_get_parent(dev)));
device_printf(dev, device_printf(dev,
"scheme: %#x func: %#x rtl: %d rev: %d.%d custom rev: %d\n", "scheme: %#x func: %#x rtl: %d rev: %d.%d custom rev: %d\n",
(rev & ADC_REV_SCHEME_MSK) >> ADC_REV_SCHEME_SHIFT, (rev & ADC_REV_SCHEME_MSK) >> ADC_REV_SCHEME_SHIFT,
(rev & ADC_REV_FUNC_MSK) >> ADC_REV_FUNC_SHIFT, (rev & ADC_REV_FUNC_MSK) >> ADC_REV_FUNC_SHIFT,
(rev & ADC_REV_RTL_MSK) >> ADC_REV_RTL_SHIFT, (rev & ADC_REV_RTL_MSK) >> ADC_REV_RTL_SHIFT,
(rev & ADC_REV_MAJOR_MSK) >> ADC_REV_MAJOR_SHIFT, (rev & ADC_REV_MAJOR_MSK) >> ADC_REV_MAJOR_SHIFT,
rev & ADC_REV_MINOR_MSK, rev & ADC_REV_MINOR_MSK,
(rev & ADC_REV_CUSTOM_MSK) >> ADC_REV_CUSTOM_SHIFT); (rev & ADC_REV_CUSTOM_MSK) >> ADC_REV_CUSTOM_SHIFT);
▲ Show 20 Lines • Show All 101 Lines • ▼ Show 20 Linesstatic driver_t ti_adc_driver = {
sizeof(struct ti_adc_softc), sizeof(struct ti_adc_softc),
}; };
static devclass_t ti_adc_devclass; static devclass_t ti_adc_devclass;
DRIVER_MODULE(ti_adc, simplebus, ti_adc_driver, ti_adc_devclass, 0, 0); DRIVER_MODULE(ti_adc, simplebus, ti_adc_driver, ti_adc_devclass, 0, 0);
MODULE_VERSION(ti_adc, 1); MODULE_VERSION(ti_adc, 1);
MODULE_DEPEND(ti_adc, simplebus, 1, 1, 1); MODULE_DEPEND(ti_adc, simplebus, 1, 1, 1);
MODULE_DEPEND(ti_adc, ti_sysc, 1, 1, 1);
#ifdef EVDEV_SUPPORT #ifdef EVDEV_SUPPORT
MODULE_DEPEND(ti_adc, evdev, 1, 1, 1); MODULE_DEPEND(ti_adc, evdev, 1, 1, 1);
#endif #endif