qemu/hw/misc/max111x.c
Paolo Bonzini 7d37435bd5 avoid TABs in files that only contain a few
Most files that have TABs only contain a handful of them.  Change
them to spaces so that we don't confuse people.

disas, standard-headers, linux-headers and libdecnumber are imported
from other projects and probably should be exempted from the check.
Outside those, after this patch the following files still contain both
8-space and TAB sequences at the beginning of the line.  Many of them
have a majority of TABs, or were initially committed with all tabs.

    bsd-user/i386/target_syscall.h
    bsd-user/x86_64/target_syscall.h
    crypto/aes.c
    hw/audio/fmopl.c
    hw/audio/fmopl.h
    hw/block/tc58128.c
    hw/display/cirrus_vga.c
    hw/display/xenfb.c
    hw/dma/etraxfs_dma.c
    hw/intc/sh_intc.c
    hw/misc/mst_fpga.c
    hw/net/pcnet.c
    hw/sh4/sh7750.c
    hw/timer/m48t59.c
    hw/timer/sh_timer.c
    include/crypto/aes.h
    include/disas/bfd.h
    include/hw/sh4/sh.h
    libdecnumber/decNumber.c
    linux-headers/asm-generic/unistd.h
    linux-headers/linux/kvm.h
    linux-user/alpha/target_syscall.h
    linux-user/arm/nwfpe/double_cpdo.c
    linux-user/arm/nwfpe/fpa11_cpdt.c
    linux-user/arm/nwfpe/fpa11_cprt.c
    linux-user/arm/nwfpe/fpa11.h
    linux-user/flat.h
    linux-user/flatload.c
    linux-user/i386/target_syscall.h
    linux-user/ppc/target_syscall.h
    linux-user/sparc/target_syscall.h
    linux-user/syscall.c
    linux-user/syscall_defs.h
    linux-user/x86_64/target_syscall.h
    slirp/cksum.c
    slirp/if.c
    slirp/ip.h
    slirp/ip_icmp.c
    slirp/ip_icmp.h
    slirp/ip_input.c
    slirp/ip_output.c
    slirp/mbuf.c
    slirp/misc.c
    slirp/sbuf.c
    slirp/socket.c
    slirp/socket.h
    slirp/tcp_input.c
    slirp/tcpip.h
    slirp/tcp_output.c
    slirp/tcp_subr.c
    slirp/tcp_timer.c
    slirp/tftp.c
    slirp/udp.c
    slirp/udp.h
    target/cris/cpu.h
    target/cris/mmu.c
    target/cris/op_helper.c
    target/sh4/helper.c
    target/sh4/op_helper.c
    target/sh4/translate.c
    tcg/sparc/tcg-target.inc.c
    tests/tcg/cris/check_addo.c
    tests/tcg/cris/check_moveq.c
    tests/tcg/cris/check_swap.c
    tests/tcg/multiarch/test-mmap.c
    ui/vnc-enc-hextile-template.h
    ui/vnc-enc-zywrle.h
    util/envlist.c
    util/readline.c

The following have only TABs:

    bsd-user/i386/target_signal.h
    bsd-user/sparc64/target_signal.h
    bsd-user/sparc64/target_syscall.h
    bsd-user/sparc/target_signal.h
    bsd-user/sparc/target_syscall.h
    bsd-user/x86_64/target_signal.h
    crypto/desrfb.c
    hw/audio/intel-hda-defs.h
    hw/core/uboot_image.h
    hw/sh4/sh7750_regnames.c
    hw/sh4/sh7750_regs.h
    include/hw/cris/etraxfs_dma.h
    linux-user/alpha/termbits.h
    linux-user/arm/nwfpe/fpopcode.h
    linux-user/arm/nwfpe/fpsr.h
    linux-user/arm/syscall_nr.h
    linux-user/arm/target_signal.h
    linux-user/cris/target_signal.h
    linux-user/i386/target_signal.h
    linux-user/linux_loop.h
    linux-user/m68k/target_signal.h
    linux-user/microblaze/target_signal.h
    linux-user/mips64/target_signal.h
    linux-user/mips/target_signal.h
    linux-user/mips/target_syscall.h
    linux-user/mips/termbits.h
    linux-user/ppc/target_signal.h
    linux-user/sh4/target_signal.h
    linux-user/sh4/termbits.h
    linux-user/sparc64/target_syscall.h
    linux-user/sparc/target_signal.h
    linux-user/x86_64/target_signal.h
    linux-user/x86_64/termbits.h
    pc-bios/optionrom/optionrom.h
    slirp/mbuf.h
    slirp/misc.h
    slirp/sbuf.h
    slirp/tcp.h
    slirp/tcp_timer.h
    slirp/tcp_var.h
    target/i386/svm.h
    target/sparc/asi.h
    target/xtensa/core-dc232b/xtensa-modules.inc.c
    target/xtensa/core-dc233c/xtensa-modules.inc.c
    target/xtensa/core-de212/core-isa.h
    target/xtensa/core-de212/xtensa-modules.inc.c
    target/xtensa/core-fsf/xtensa-modules.inc.c
    target/xtensa/core-sample_controller/core-isa.h
    target/xtensa/core-sample_controller/xtensa-modules.inc.c
    target/xtensa/core-test_kc705_be/core-isa.h
    target/xtensa/core-test_kc705_be/xtensa-modules.inc.c
    tests/tcg/cris/check_abs.c
    tests/tcg/cris/check_addc.c
    tests/tcg/cris/check_addcm.c
    tests/tcg/cris/check_addoq.c
    tests/tcg/cris/check_bound.c
    tests/tcg/cris/check_ftag.c
    tests/tcg/cris/check_int64.c
    tests/tcg/cris/check_lz.c
    tests/tcg/cris/check_openpf5.c
    tests/tcg/cris/check_sigalrm.c
    tests/tcg/cris/crisutils.h
    tests/tcg/cris/sys.c
    tests/tcg/i386/test-i386-ssse3.c
    ui/vgafont.h

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20181213223737.11793-3-pbonzini@redhat.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Eric Blake <eblake@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:56 +01:00

216 lines
4.9 KiB
C

/*
* Maxim MAX1110/1111 ADC chip emulation.
*
* Copyright (c) 2006 Openedhand Ltd.
* Written by Andrzej Zaborowski <balrog@zabor.org>
*
* This code is licensed under the GNU GPLv2.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "hw/ssi/ssi.h"
typedef struct {
SSISlave parent_obj;
qemu_irq interrupt;
uint8_t tb1, rb2, rb3;
int cycle;
uint8_t input[8];
int inputs, com;
} MAX111xState;
#define TYPE_MAX_111X "max111x"
#define MAX_111X(obj) \
OBJECT_CHECK(MAX111xState, (obj), TYPE_MAX_111X)
#define TYPE_MAX_1110 "max1110"
#define TYPE_MAX_1111 "max1111"
/* Control-byte bitfields */
#define CB_PD0 (1 << 0)
#define CB_PD1 (1 << 1)
#define CB_SGL (1 << 2)
#define CB_UNI (1 << 3)
#define CB_SEL0 (1 << 4)
#define CB_SEL1 (1 << 5)
#define CB_SEL2 (1 << 6)
#define CB_START (1 << 7)
#define CHANNEL_NUM(v, b0, b1, b2) \
((((v) >> (2 + (b0))) & 4) | \
(((v) >> (3 + (b1))) & 2) | \
(((v) >> (4 + (b2))) & 1))
static uint32_t max111x_read(MAX111xState *s)
{
if (!s->tb1)
return 0;
switch (s->cycle ++) {
case 1:
return s->rb2;
case 2:
return s->rb3;
}
return 0;
}
/* Interpret a control-byte */
static void max111x_write(MAX111xState *s, uint32_t value)
{
int measure, chan;
/* Ignore the value if START bit is zero */
if (!(value & CB_START))
return;
s->cycle = 0;
if (!(value & CB_PD1)) {
s->tb1 = 0;
return;
}
s->tb1 = value;
if (s->inputs == 8)
chan = CHANNEL_NUM(value, 1, 0, 2);
else
chan = CHANNEL_NUM(value & ~CB_SEL0, 0, 1, 2);
if (value & CB_SGL)
measure = s->input[chan] - s->com;
else
measure = s->input[chan] - s->input[chan ^ 1];
if (!(value & CB_UNI))
measure ^= 0x80;
s->rb2 = (measure >> 2) & 0x3f;
s->rb3 = (measure << 6) & 0xc0;
/* FIXME: When should the IRQ be lowered? */
qemu_irq_raise(s->interrupt);
}
static uint32_t max111x_transfer(SSISlave *dev, uint32_t value)
{
MAX111xState *s = MAX_111X(dev);
max111x_write(s, value);
return max111x_read(s);
}
static const VMStateDescription vmstate_max111x = {
.name = "max111x",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_SSI_SLAVE(parent_obj, MAX111xState),
VMSTATE_UINT8(tb1, MAX111xState),
VMSTATE_UINT8(rb2, MAX111xState),
VMSTATE_UINT8(rb3, MAX111xState),
VMSTATE_INT32_EQUAL(inputs, MAX111xState, NULL),
VMSTATE_INT32(com, MAX111xState),
VMSTATE_ARRAY_INT32_UNSAFE(input, MAX111xState, inputs,
vmstate_info_uint8, uint8_t),
VMSTATE_END_OF_LIST()
}
};
static int max111x_init(SSISlave *d, int inputs)
{
DeviceState *dev = DEVICE(d);
MAX111xState *s = MAX_111X(dev);
qdev_init_gpio_out(dev, &s->interrupt, 1);
s->inputs = inputs;
/* TODO: add a user interface for setting these */
s->input[0] = 0xf0;
s->input[1] = 0xe0;
s->input[2] = 0xd0;
s->input[3] = 0xc0;
s->input[4] = 0xb0;
s->input[5] = 0xa0;
s->input[6] = 0x90;
s->input[7] = 0x80;
s->com = 0;
vmstate_register(dev, -1, &vmstate_max111x, s);
return 0;
}
static void max1110_realize(SSISlave *dev, Error **errp)
{
max111x_init(dev, 8);
}
static void max1111_realize(SSISlave *dev, Error **errp)
{
max111x_init(dev, 4);
}
void max111x_set_input(DeviceState *dev, int line, uint8_t value)
{
MAX111xState *s = MAX_111X(dev);
assert(line >= 0 && line < s->inputs);
s->input[line] = value;
}
static void max111x_class_init(ObjectClass *klass, void *data)
{
SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
k->transfer = max111x_transfer;
}
static const TypeInfo max111x_info = {
.name = TYPE_MAX_111X,
.parent = TYPE_SSI_SLAVE,
.instance_size = sizeof(MAX111xState),
.class_init = max111x_class_init,
.abstract = true,
};
static void max1110_class_init(ObjectClass *klass, void *data)
{
SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
k->realize = max1110_realize;
}
static const TypeInfo max1110_info = {
.name = TYPE_MAX_1110,
.parent = TYPE_MAX_111X,
.class_init = max1110_class_init,
};
static void max1111_class_init(ObjectClass *klass, void *data)
{
SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
k->realize = max1111_realize;
}
static const TypeInfo max1111_info = {
.name = TYPE_MAX_1111,
.parent = TYPE_MAX_111X,
.class_init = max1111_class_init,
};
static void max111x_register_types(void)
{
type_register_static(&max111x_info);
type_register_static(&max1110_info);
type_register_static(&max1111_info);
}
type_init(max111x_register_types)