hw/misc/mps2-fpgaio: Use the LED device
Per the 'ARM MPS2 and MPS2+ FPGA Prototyping Boards Technical Reference Manual' (100112_0200_07_en): 2.1 Overview of the MPS2 and MPS2+ hardware The MPS2 and MPS2+ FPGA Prototyping Boards contain the following components and interfaces: * User switches and user LEDs: - Two green LEDs and two push buttons that connect to the FPGA. - Eight green LEDs and one 8-way dip switch that connect to the MCC. Add the 2 LEDs connected to the FPGA. This replaces the 'mps2_fpgaio_leds' trace events by the generic 'led_set_intensity' event. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Luc Michel <luc.michel@greensocs.com> Message-Id: <20200912134041.946260-6-f4bug@amsat.org>
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@ -93,6 +93,7 @@ config MIPS_ITU
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config MPS2_FPGAIO
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bool
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select LED
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config MPS2_SCC
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bool
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@ -24,6 +24,7 @@
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#include "migration/vmstate.h"
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#include "hw/registerfields.h"
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#include "hw/misc/mps2-fpgaio.h"
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#include "hw/misc/led.h"
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#include "hw/qdev-properties.h"
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#include "qemu/timer.h"
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@ -176,12 +177,9 @@ static void mps2_fpgaio_write(void *opaque, hwaddr offset, uint64_t value,
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switch (offset) {
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case A_LED0:
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/* LED bits [1:0] control board LEDs. We don't currently have
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* a mechanism for displaying this graphically, so use a trace event.
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*/
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trace_mps2_fpgaio_leds(value & 0x02 ? '*' : '.',
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value & 0x01 ? '*' : '.');
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s->led0 = value & 0x3;
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led_set_state(s->led[0], value & 0x01);
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led_set_state(s->led[1], value & 0x02);
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break;
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case A_PRESCALE:
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resync_counter(s);
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@ -239,6 +237,10 @@ static void mps2_fpgaio_reset(DeviceState *dev)
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s->counter = 0;
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s->pscntr = 0;
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s->pscntr_sync_ticks = now;
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for (size_t i = 0; i < ARRAY_SIZE(s->led); i++) {
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device_cold_reset(DEVICE(s->led[i]));
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}
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}
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static void mps2_fpgaio_init(Object *obj)
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@ -251,6 +253,16 @@ static void mps2_fpgaio_init(Object *obj)
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sysbus_init_mmio(sbd, &s->iomem);
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}
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static void mps2_fpgaio_realize(DeviceState *dev, Error **errp)
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{
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MPS2FPGAIO *s = MPS2_FPGAIO(dev);
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s->led[0] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH,
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LED_COLOR_GREEN, "USERLED0");
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s->led[1] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH,
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LED_COLOR_GREEN, "USERLED1");
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}
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static bool mps2_fpgaio_counters_needed(void *opaque)
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{
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/* Currently vmstate.c insists all subsections have a 'needed' function */
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@ -299,6 +311,7 @@ static void mps2_fpgaio_class_init(ObjectClass *klass, void *data)
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->vmsd = &mps2_fpgaio_vmstate;
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dc->realize = mps2_fpgaio_realize;
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dc->reset = mps2_fpgaio_reset;
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device_class_set_props(dc, mps2_fpgaio_properties);
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}
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@ -92,7 +92,6 @@ mps2_scc_cfg_read(unsigned function, unsigned device, uint32_t value) "MPS2 SCC
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mps2_fpgaio_read(uint64_t offset, uint64_t data, unsigned size) "MPS2 FPGAIO read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
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mps2_fpgaio_write(uint64_t offset, uint64_t data, unsigned size) "MPS2 FPGAIO write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
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mps2_fpgaio_reset(void) "MPS2 FPGAIO: reset"
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mps2_fpgaio_leds(char led1, char led0) "MPS2 FPGAIO LEDs: %c%c"
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# msf2-sysreg.c
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msf2_sysreg_write(uint64_t offset, uint32_t val, uint32_t prev) "msf2-sysreg write: addr 0x%08" PRIx64 " data 0x%" PRIx32 " prev 0x%" PRIx32
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@ -22,6 +22,7 @@
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#define MPS2_FPGAIO_H
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#include "hw/sysbus.h"
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#include "hw/misc/led.h"
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#include "qom/object.h"
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#define TYPE_MPS2_FPGAIO "mps2-fpgaio"
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@ -33,6 +34,7 @@ struct MPS2FPGAIO {
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/*< public >*/
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MemoryRegion iomem;
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LEDState *led[2];
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uint32_t led0;
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uint32_t prescale;
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