| Message ID | 1485424060-12217-8-git-send-email-fred.konrad@greensocs.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 01/26/2017 10:47 AM, fred.konrad@greensocs.com wrote: > From: KONRAD Frederic <fred.konrad@greensocs.com> > > This is a fixed clock device. > It justs behave as an empty device with a parametrable output rate. > > Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> > --- > hw/misc/Makefile.objs | 1 + > hw/misc/fixed-clock.c | 88 +++++++++++++++++++++++++++++++++++++++++++ > include/hw/misc/fixed-clock.h | 30 +++++++++++++++ > 3 files changed, 119 insertions(+) > create mode 100644 hw/misc/fixed-clock.c > create mode 100644 include/hw/misc/fixed-clock.h > > diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs > index 1a89615..2670c2d 100644 > --- a/hw/misc/Makefile.objs > +++ b/hw/misc/Makefile.objs > @@ -53,3 +53,4 @@ obj-$(CONFIG_EDU) += edu.o > obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o > obj-$(CONFIG_AUX) += auxbus.o > obj-$(CONFIG_ASPEED_SOC) += aspeed_scu.o aspeed_sdmc.o > +obj-y += fixed-clock.o > diff --git a/hw/misc/fixed-clock.c b/hw/misc/fixed-clock.c > new file mode 100644 > index 0000000..aa124d8 > --- /dev/null > +++ b/hw/misc/fixed-clock.c > @@ -0,0 +1,88 @@ > +/* > + * Fixed clock > + * > + * Copyright (C) 2016 : GreenSocs Ltd > + * http://www.greensocs.com/ , email: info@greensocs.com > + * > + * Frederic Konrad <fred.konrad@greensocs.com> > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation, either version 2 of the License, or > + * (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License along > + * with this program; if not, see <http://www.gnu.org/licenses/>. > + * > + */ > + > +#include "qemu/osdep.h" > +#include "hw/qdev.h" > +#include "hw/misc/fixed-clock.h" > +#include "qemu/qemu-clock.h" > +#include "qapi/error.h" > + > +#ifndef DEBUG_FIXED_CLOCK > +#define DEBUG_FIXED_CLOCK 0 > +#endif > + > +#define DPRINTF(fmt, ...) do { \ > + if (DEBUG_FIXED_CLOCK) { \ > + qemu_log(__FILE__": " fmt , ## __VA_ARGS__); \ > + } \ > +} while (0); > + > +typedef struct { > + DeviceState parent_obj; > + > + uint32_t rate; > + struct qemu_clk out; This really feels redundant. See my previous suggestion. Thanks, C. > +} FixedClock; > + > +static Property fixed_clock_properties[] = { > + DEFINE_PROP_UINT32("rate", FixedClock, rate, 0), > + DEFINE_PROP_END_OF_LIST() > +}; > + > +static void fixed_clock_realizefn(DeviceState *dev, Error **errp) > +{ > + FixedClock *s = FIXED_CLOCK(dev); > + > + qemu_clk_update_rate(&s->out, s->rate); > +} > + > +static void fixed_clock_instance_init(Object *obj) > +{ > + FixedClock *s = FIXED_CLOCK(obj); > + > + object_initialize(&s->out, sizeof(s->out), TYPE_CLOCK); > + qemu_clk_device_add_clock(DEVICE(obj), &s->out, "clk_out"); > +} > + > +static void fixed_clock_class_init(ObjectClass *klass, void *data) > +{ > + DeviceClass *dc = DEVICE_CLASS(klass); > + > + dc->realize = fixed_clock_realizefn; > + dc->props = fixed_clock_properties; > +} > + > +static const TypeInfo fixed_clock_info = { > + .name = TYPE_FIXED_CLOCK, > + .parent = TYPE_DEVICE, > + .instance_size = sizeof(FixedClock), > + .instance_init = fixed_clock_instance_init, > + .class_init = fixed_clock_class_init, > +}; > + > +static void fixed_clock_register_types(void) > +{ > + type_register_static(&fixed_clock_info); > +} > + > +type_init(fixed_clock_register_types); > diff --git a/include/hw/misc/fixed-clock.h b/include/hw/misc/fixed-clock.h > new file mode 100644 > index 0000000..1376444 > --- /dev/null > +++ b/include/hw/misc/fixed-clock.h > @@ -0,0 +1,30 @@ > +/* > + * Fixed clock > + * > + * Copyright (C) 2016 : GreenSocs Ltd > + * http://www.greensocs.com/ , email: info@greensocs.com > + * > + * Frederic Konrad <fred.konrad@greensocs.com> > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation, either version 2 of the License, or > + * (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License along > + * with this program; if not, see <http://www.gnu.org/licenses/>. > + * > + */ > + > +#ifndef FIXED_CLOCK_H > +#define FIXED_CLOCK_H > + > +#define TYPE_FIXED_CLOCK "fixed-clock" > +#define FIXED_CLOCK(obj) OBJECT_CHECK(FixedClock, (obj), TYPE_FIXED_CLOCK) > + > +#endif /* FIXED_CLOCK_H */ >
diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index 1a89615..2670c2d 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -53,3 +53,4 @@ obj-$(CONFIG_EDU) += edu.o obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o obj-$(CONFIG_AUX) += auxbus.o obj-$(CONFIG_ASPEED_SOC) += aspeed_scu.o aspeed_sdmc.o +obj-y += fixed-clock.o diff --git a/hw/misc/fixed-clock.c b/hw/misc/fixed-clock.c new file mode 100644 index 0000000..aa124d8 --- /dev/null +++ b/hw/misc/fixed-clock.c @@ -0,0 +1,88 @@ +/* + * Fixed clock + * + * Copyright (C) 2016 : GreenSocs Ltd + * http://www.greensocs.com/ , email: info@greensocs.com + * + * Frederic Konrad <fred.konrad@greensocs.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "qemu/osdep.h" +#include "hw/qdev.h" +#include "hw/misc/fixed-clock.h" +#include "qemu/qemu-clock.h" +#include "qapi/error.h" + +#ifndef DEBUG_FIXED_CLOCK +#define DEBUG_FIXED_CLOCK 0 +#endif + +#define DPRINTF(fmt, ...) do { \ + if (DEBUG_FIXED_CLOCK) { \ + qemu_log(__FILE__": " fmt , ## __VA_ARGS__); \ + } \ +} while (0); + +typedef struct { + DeviceState parent_obj; + + uint32_t rate; + struct qemu_clk out; +} FixedClock; + +static Property fixed_clock_properties[] = { + DEFINE_PROP_UINT32("rate", FixedClock, rate, 0), + DEFINE_PROP_END_OF_LIST() +}; + +static void fixed_clock_realizefn(DeviceState *dev, Error **errp) +{ + FixedClock *s = FIXED_CLOCK(dev); + + qemu_clk_update_rate(&s->out, s->rate); +} + +static void fixed_clock_instance_init(Object *obj) +{ + FixedClock *s = FIXED_CLOCK(obj); + + object_initialize(&s->out, sizeof(s->out), TYPE_CLOCK); + qemu_clk_device_add_clock(DEVICE(obj), &s->out, "clk_out"); +} + +static void fixed_clock_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = fixed_clock_realizefn; + dc->props = fixed_clock_properties; +} + +static const TypeInfo fixed_clock_info = { + .name = TYPE_FIXED_CLOCK, + .parent = TYPE_DEVICE, + .instance_size = sizeof(FixedClock), + .instance_init = fixed_clock_instance_init, + .class_init = fixed_clock_class_init, +}; + +static void fixed_clock_register_types(void) +{ + type_register_static(&fixed_clock_info); +} + +type_init(fixed_clock_register_types); diff --git a/include/hw/misc/fixed-clock.h b/include/hw/misc/fixed-clock.h new file mode 100644 index 0000000..1376444 --- /dev/null +++ b/include/hw/misc/fixed-clock.h @@ -0,0 +1,30 @@ +/* + * Fixed clock + * + * Copyright (C) 2016 : GreenSocs Ltd + * http://www.greensocs.com/ , email: info@greensocs.com + * + * Frederic Konrad <fred.konrad@greensocs.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#ifndef FIXED_CLOCK_H +#define FIXED_CLOCK_H + +#define TYPE_FIXED_CLOCK "fixed-clock" +#define FIXED_CLOCK(obj) OBJECT_CHECK(FixedClock, (obj), TYPE_FIXED_CLOCK) + +#endif /* FIXED_CLOCK_H */