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hw/misc/mps2-fpgaio: Use the LED device

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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>
This commit is contained in:
Philippe Mathieu-Daudé 2020-06-15 21:17:19 +02:00
parent 7cfbde5ea1
commit 65ad1da23e
4 changed files with 21 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
hw/misc/Kconfig
View file

@ -93,6 +93,7 @@ config MIPS_ITU
config MPS2_FPGAIO
bool
select LED
config MPS2_SCC
bool

23
hw/misc/mps2-fpgaio.c
View file

@ -24,6 +24,7 @@
#include "migration/vmstate.h"
#include "hw/registerfields.h"
#include "hw/misc/mps2-fpgaio.h"
#include "hw/misc/led.h"
#include "hw/qdev-properties.h"
#include "qemu/timer.h"
@ -176,12 +177,9 @@ static void mps2_fpgaio_write(void *opaque, hwaddr offset, uint64_t value,
switch (offset) {
case A_LED0:
/* LED bits [1:0] control board LEDs. We don't currently have
* a mechanism for displaying this graphically, so use a trace event.
*/
trace_mps2_fpgaio_leds(value & 0x02 ? '*' : '.',
value & 0x01 ? '*' : '.');
s->led0 = value & 0x3;
led_set_state(s->led[0], value & 0x01);
led_set_state(s->led[1], value & 0x02);
break;
case A_PRESCALE:
resync_counter(s);
@ -239,6 +237,10 @@ static void mps2_fpgaio_reset(DeviceState *dev)
s->counter = 0;
s->pscntr = 0;
s->pscntr_sync_ticks = now;
for (size_t i = 0; i < ARRAY_SIZE(s->led); i++) {
device_cold_reset(DEVICE(s->led[i]));
}
}
static void mps2_fpgaio_init(Object *obj)
@ -251,6 +253,16 @@ static void mps2_fpgaio_init(Object *obj)
sysbus_init_mmio(sbd, &s->iomem);
}
static void mps2_fpgaio_realize(DeviceState *dev, Error **errp)
{
MPS2FPGAIO *s = MPS2_FPGAIO(dev);
s->led[0] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH,
LED_COLOR_GREEN, "USERLED0");
s->led[1] = led_create_simple(OBJECT(dev), GPIO_POLARITY_ACTIVE_HIGH,
LED_COLOR_GREEN, "USERLED1");
}
static bool mps2_fpgaio_counters_needed(void *opaque)
{
/* Currently vmstate.c insists all subsections have a 'needed' function */
@ -299,6 +311,7 @@ static void mps2_fpgaio_class_init(ObjectClass *klass, void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &mps2_fpgaio_vmstate;
dc->realize = mps2_fpgaio_realize;
dc->reset = mps2_fpgaio_reset;
device_class_set_props(dc, mps2_fpgaio_properties);
}

1
hw/misc/trace-events
View file

@ -92,7 +92,6 @@ mps2_scc_cfg_read(unsigned function, unsigned device, uint32_t value) "MPS2 SCC
mps2_fpgaio_read(uint64_t offset, uint64_t data, unsigned size) "MPS2 FPGAIO read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
mps2_fpgaio_write(uint64_t offset, uint64_t data, unsigned size) "MPS2 FPGAIO write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
mps2_fpgaio_reset(void) "MPS2 FPGAIO: reset"
mps2_fpgaio_leds(char led1, char led0) "MPS2 FPGAIO LEDs: %c%c"
# msf2-sysreg.c
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

2
include/hw/misc/mps2-fpgaio.h
View file

@ -22,6 +22,7 @@
#define MPS2_FPGAIO_H
#include "hw/sysbus.h"
#include "hw/misc/led.h"
#include "qom/object.h"
#define TYPE_MPS2_FPGAIO "mps2-fpgaio"
@ -33,6 +34,7 @@ struct MPS2FPGAIO {
/*< public >*/
MemoryRegion iomem;
LEDState *led[2];
uint32_t led0;
uint32_t prescale;