CONFIG_XGMAC=y
CONFIG_EXYNOS4=y
CONFIG_PXA2XX=y
+CONFIG_BITBANG_I2C=y
CONFIG_FRAMEBUFFER=y
CONFIG_MARVELL_88W8618=y
CONFIG_OMAP=y
obj-y += exynos4210_gic.o exynos4210_combiner.o
obj-y += exynos4210_uart.o exynos4210_pwm.o
obj-y += exynos4210_pmu.o exynos4210_mct.o
-obj-y += exynos4210_rtc.o exynos4210_i2c.o
+obj-y += exynos4210_rtc.o
obj-y += arm_mptimer.o a15mpcore.o
obj-y += armv7m_nvic.o
obj-y += pxa2xx_timer.o pxa2xx_dma.o
obj-y += pxa2xx_mmci.o pxa2xx_pcmcia.o pxa2xx_keypad.o
obj-y += zaurus.o
-obj-y += omap_dma.o omap_clk.o omap_mmc.o omap_i2c.o \
+obj-y += omap_dma.o omap_clk.o omap_mmc.o \
omap_gpio.o omap_intc.o omap_uart.o
obj-y += soc_dma.o omap_gptimer.o omap_synctimer.o \
omap_gpmc.o omap_sdrc.o omap_spi.o omap_tap.o omap_l4.o
obj-y += tsc210x.o
obj-y += cbus.o tusb6010.o
obj-y += mst_fpga.o
-obj-y += bitbang_i2c.o
obj-y += strongarm.o
obj-y += imx_serial.o imx_ccm.o imx_timer.o imx_avic.o
obj-$(CONFIG_KVM) += kvm/arm_gic.o
+++ /dev/null
-/*
- * Bit-Bang i2c emulation extracted from
- * Marvell MV88W8618 / Freecom MusicPal emulation.
- *
- * Copyright (c) 2008 Jan Kiszka
- *
- * This code is licensed under the GNU GPL v2.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-#include "hw/hw.h"
-#include "hw/bitbang_i2c.h"
-#include "hw/sysbus.h"
-
-//#define DEBUG_BITBANG_I2C
-
-#ifdef DEBUG_BITBANG_I2C
-#define DPRINTF(fmt, ...) \
-do { printf("bitbang_i2c: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) do {} while(0)
-#endif
-
-typedef enum bitbang_i2c_state {
- STOPPED = 0,
- SENDING_BIT7,
- SENDING_BIT6,
- SENDING_BIT5,
- SENDING_BIT4,
- SENDING_BIT3,
- SENDING_BIT2,
- SENDING_BIT1,
- SENDING_BIT0,
- WAITING_FOR_ACK,
- RECEIVING_BIT7,
- RECEIVING_BIT6,
- RECEIVING_BIT5,
- RECEIVING_BIT4,
- RECEIVING_BIT3,
- RECEIVING_BIT2,
- RECEIVING_BIT1,
- RECEIVING_BIT0,
- SENDING_ACK,
- SENT_NACK
-} bitbang_i2c_state;
-
-struct bitbang_i2c_interface {
- i2c_bus *bus;
- bitbang_i2c_state state;
- int last_data;
- int last_clock;
- int device_out;
- uint8_t buffer;
- int current_addr;
-};
-
-static void bitbang_i2c_enter_stop(bitbang_i2c_interface *i2c)
-{
- DPRINTF("STOP\n");
- if (i2c->current_addr >= 0)
- i2c_end_transfer(i2c->bus);
- i2c->current_addr = -1;
- i2c->state = STOPPED;
-}
-
-/* Set device data pin. */
-static int bitbang_i2c_ret(bitbang_i2c_interface *i2c, int level)
-{
- i2c->device_out = level;
- //DPRINTF("%d %d %d\n", i2c->last_clock, i2c->last_data, i2c->device_out);
- return level & i2c->last_data;
-}
-
-/* Leave device data pin unodified. */
-static int bitbang_i2c_nop(bitbang_i2c_interface *i2c)
-{
- return bitbang_i2c_ret(i2c, i2c->device_out);
-}
-
-/* Returns data line level. */
-int bitbang_i2c_set(bitbang_i2c_interface *i2c, int line, int level)
-{
- int data;
-
- if (level != 0 && level != 1) {
- abort();
- }
-
- if (line == BITBANG_I2C_SDA) {
- if (level == i2c->last_data) {
- return bitbang_i2c_nop(i2c);
- }
- i2c->last_data = level;
- if (i2c->last_clock == 0) {
- return bitbang_i2c_nop(i2c);
- }
- if (level == 0) {
- DPRINTF("START\n");
- /* START condition. */
- i2c->state = SENDING_BIT7;
- i2c->current_addr = -1;
- } else {
- /* STOP condition. */
- bitbang_i2c_enter_stop(i2c);
- }
- return bitbang_i2c_ret(i2c, 1);
- }
-
- data = i2c->last_data;
- if (i2c->last_clock == level) {
- return bitbang_i2c_nop(i2c);
- }
- i2c->last_clock = level;
- if (level == 0) {
- /* State is set/read at the start of the clock pulse.
- release the data line at the end. */
- return bitbang_i2c_ret(i2c, 1);
- }
- switch (i2c->state) {
- case STOPPED:
- case SENT_NACK:
- return bitbang_i2c_ret(i2c, 1);
-
- case SENDING_BIT7 ... SENDING_BIT0:
- i2c->buffer = (i2c->buffer << 1) | data;
- /* will end up in WAITING_FOR_ACK */
- i2c->state++;
- return bitbang_i2c_ret(i2c, 1);
-
- case WAITING_FOR_ACK:
- if (i2c->current_addr < 0) {
- i2c->current_addr = i2c->buffer;
- DPRINTF("Address 0x%02x\n", i2c->current_addr);
- i2c_start_transfer(i2c->bus, i2c->current_addr >> 1,
- i2c->current_addr & 1);
- } else {
- DPRINTF("Sent 0x%02x\n", i2c->buffer);
- i2c_send(i2c->bus, i2c->buffer);
- }
- if (i2c->current_addr & 1) {
- i2c->state = RECEIVING_BIT7;
- } else {
- i2c->state = SENDING_BIT7;
- }
- return bitbang_i2c_ret(i2c, 0);
-
- case RECEIVING_BIT7:
- i2c->buffer = i2c_recv(i2c->bus);
- DPRINTF("RX byte 0x%02x\n", i2c->buffer);
- /* Fall through... */
- case RECEIVING_BIT6 ... RECEIVING_BIT0:
- data = i2c->buffer >> 7;
- /* will end up in SENDING_ACK */
- i2c->state++;
- i2c->buffer <<= 1;
- return bitbang_i2c_ret(i2c, data);
-
- case SENDING_ACK:
- i2c->state = RECEIVING_BIT7;
- if (data != 0) {
- DPRINTF("NACKED\n");
- i2c->state = SENT_NACK;
- i2c_nack(i2c->bus);
- } else {
- DPRINTF("ACKED\n");
- }
- return bitbang_i2c_ret(i2c, 1);
- }
- abort();
-}
-
-bitbang_i2c_interface *bitbang_i2c_init(i2c_bus *bus)
-{
- bitbang_i2c_interface *s;
-
- s = g_malloc0(sizeof(bitbang_i2c_interface));
-
- s->bus = bus;
- s->last_data = 1;
- s->last_clock = 1;
- s->device_out = 1;
-
- return s;
-}
-
-/* GPIO interface. */
-typedef struct {
- SysBusDevice busdev;
- MemoryRegion dummy_iomem;
- bitbang_i2c_interface *bitbang;
- int last_level;
- qemu_irq out;
-} GPIOI2CState;
-
-static void bitbang_i2c_gpio_set(void *opaque, int irq, int level)
-{
- GPIOI2CState *s = opaque;
-
- level = bitbang_i2c_set(s->bitbang, irq, level);
- if (level != s->last_level) {
- s->last_level = level;
- qemu_set_irq(s->out, level);
- }
-}
-
-static int gpio_i2c_init(SysBusDevice *dev)
-{
- GPIOI2CState *s = FROM_SYSBUS(GPIOI2CState, dev);
- i2c_bus *bus;
-
- memory_region_init(&s->dummy_iomem, "gpio_i2c", 0);
- sysbus_init_mmio(dev, &s->dummy_iomem);
-
- bus = i2c_init_bus(&dev->qdev, "i2c");
- s->bitbang = bitbang_i2c_init(bus);
-
- qdev_init_gpio_in(&dev->qdev, bitbang_i2c_gpio_set, 2);
- qdev_init_gpio_out(&dev->qdev, &s->out, 1);
-
- return 0;
-}
-
-static void gpio_i2c_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = gpio_i2c_init;
- dc->desc = "Virtual GPIO to I2C bridge";
-}
-
-static const TypeInfo gpio_i2c_info = {
- .name = "gpio_i2c",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(GPIOI2CState),
- .class_init = gpio_i2c_class_init,
-};
-
-static void bitbang_i2c_register_types(void)
-{
- type_register_static(&gpio_i2c_info);
-}
-
-type_init(bitbang_i2c_register_types)
+++ /dev/null
-/*
- * Exynos4210 I2C Bus Serial Interface Emulation
- *
- * Copyright (C) 2012 Samsung Electronics Co Ltd.
- * Maksim Kozlov, <m.kozlov@samsung.com>
- * Igor Mitsyanko, <i.mitsyanko@samsung.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/timer.h"
-#include "hw/sysbus.h"
-#include "hw/i2c/i2c.h"
-
-#ifndef EXYNOS4_I2C_DEBUG
-#define EXYNOS4_I2C_DEBUG 0
-#endif
-
-#define TYPE_EXYNOS4_I2C "exynos4210.i2c"
-#define EXYNOS4_I2C(obj) \
- OBJECT_CHECK(Exynos4210I2CState, (obj), TYPE_EXYNOS4_I2C)
-
-/* Exynos4210 I2C memory map */
-#define EXYNOS4_I2C_MEM_SIZE 0x14
-#define I2CCON_ADDR 0x00 /* control register */
-#define I2CSTAT_ADDR 0x04 /* control/status register */
-#define I2CADD_ADDR 0x08 /* address register */
-#define I2CDS_ADDR 0x0c /* data shift register */
-#define I2CLC_ADDR 0x10 /* line control register */
-
-#define I2CCON_ACK_GEN (1 << 7)
-#define I2CCON_INTRS_EN (1 << 5)
-#define I2CCON_INT_PEND (1 << 4)
-
-#define EXYNOS4_I2C_MODE(reg) (((reg) >> 6) & 3)
-#define I2C_IN_MASTER_MODE(reg) (((reg) >> 6) & 2)
-#define I2CMODE_MASTER_Rx 0x2
-#define I2CMODE_MASTER_Tx 0x3
-#define I2CSTAT_LAST_BIT (1 << 0)
-#define I2CSTAT_OUTPUT_EN (1 << 4)
-#define I2CSTAT_START_BUSY (1 << 5)
-
-
-#if EXYNOS4_I2C_DEBUG
-#define DPRINT(fmt, args...) \
- do { fprintf(stderr, "QEMU I2C: "fmt, ## args); } while (0)
-
-static const char *exynos4_i2c_get_regname(unsigned offset)
-{
- switch (offset) {
- case I2CCON_ADDR:
- return "I2CCON";
- case I2CSTAT_ADDR:
- return "I2CSTAT";
- case I2CADD_ADDR:
- return "I2CADD";
- case I2CDS_ADDR:
- return "I2CDS";
- case I2CLC_ADDR:
- return "I2CLC";
- default:
- return "[?]";
- }
-}
-
-#else
-#define DPRINT(fmt, args...) do { } while (0)
-#endif
-
-typedef struct Exynos4210I2CState {
- SysBusDevice busdev;
- MemoryRegion iomem;
- i2c_bus *bus;
- qemu_irq irq;
-
- uint8_t i2ccon;
- uint8_t i2cstat;
- uint8_t i2cadd;
- uint8_t i2cds;
- uint8_t i2clc;
- bool scl_free;
-} Exynos4210I2CState;
-
-static inline void exynos4210_i2c_raise_interrupt(Exynos4210I2CState *s)
-{
- if (s->i2ccon & I2CCON_INTRS_EN) {
- s->i2ccon |= I2CCON_INT_PEND;
- qemu_irq_raise(s->irq);
- }
-}
-
-static void exynos4210_i2c_data_receive(void *opaque)
-{
- Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
- int ret;
-
- s->i2cstat &= ~I2CSTAT_LAST_BIT;
- s->scl_free = false;
- ret = i2c_recv(s->bus);
- if (ret < 0 && (s->i2ccon & I2CCON_ACK_GEN)) {
- s->i2cstat |= I2CSTAT_LAST_BIT; /* Data is not acknowledged */
- } else {
- s->i2cds = ret;
- }
- exynos4210_i2c_raise_interrupt(s);
-}
-
-static void exynos4210_i2c_data_send(void *opaque)
-{
- Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
-
- s->i2cstat &= ~I2CSTAT_LAST_BIT;
- s->scl_free = false;
- if (i2c_send(s->bus, s->i2cds) < 0 && (s->i2ccon & I2CCON_ACK_GEN)) {
- s->i2cstat |= I2CSTAT_LAST_BIT;
- }
- exynos4210_i2c_raise_interrupt(s);
-}
-
-static uint64_t exynos4210_i2c_read(void *opaque, hwaddr offset,
- unsigned size)
-{
- Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
- uint8_t value;
-
- switch (offset) {
- case I2CCON_ADDR:
- value = s->i2ccon;
- break;
- case I2CSTAT_ADDR:
- value = s->i2cstat;
- break;
- case I2CADD_ADDR:
- value = s->i2cadd;
- break;
- case I2CDS_ADDR:
- value = s->i2cds;
- s->scl_free = true;
- if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Rx &&
- (s->i2cstat & I2CSTAT_START_BUSY) &&
- !(s->i2ccon & I2CCON_INT_PEND)) {
- exynos4210_i2c_data_receive(s);
- }
- break;
- case I2CLC_ADDR:
- value = s->i2clc;
- break;
- default:
- value = 0;
- DPRINT("ERROR: Bad read offset 0x%x\n", (unsigned int)offset);
- break;
- }
-
- DPRINT("read %s [0x%02x] -> 0x%02x\n", exynos4_i2c_get_regname(offset),
- (unsigned int)offset, value);
- return value;
-}
-
-static void exynos4210_i2c_write(void *opaque, hwaddr offset,
- uint64_t value, unsigned size)
-{
- Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
- uint8_t v = value & 0xff;
-
- DPRINT("write %s [0x%02x] <- 0x%02x\n", exynos4_i2c_get_regname(offset),
- (unsigned int)offset, v);
-
- switch (offset) {
- case I2CCON_ADDR:
- s->i2ccon = (v & ~I2CCON_INT_PEND) | (s->i2ccon & I2CCON_INT_PEND);
- if ((s->i2ccon & I2CCON_INT_PEND) && !(v & I2CCON_INT_PEND)) {
- s->i2ccon &= ~I2CCON_INT_PEND;
- qemu_irq_lower(s->irq);
- if (!(s->i2ccon & I2CCON_INTRS_EN)) {
- s->i2cstat &= ~I2CSTAT_START_BUSY;
- }
-
- if (s->i2cstat & I2CSTAT_START_BUSY) {
- if (s->scl_free) {
- if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Tx) {
- exynos4210_i2c_data_send(s);
- } else if (EXYNOS4_I2C_MODE(s->i2cstat) ==
- I2CMODE_MASTER_Rx) {
- exynos4210_i2c_data_receive(s);
- }
- } else {
- s->i2ccon |= I2CCON_INT_PEND;
- qemu_irq_raise(s->irq);
- }
- }
- }
- break;
- case I2CSTAT_ADDR:
- s->i2cstat =
- (s->i2cstat & I2CSTAT_START_BUSY) | (v & ~I2CSTAT_START_BUSY);
-
- if (!(s->i2cstat & I2CSTAT_OUTPUT_EN)) {
- s->i2cstat &= ~I2CSTAT_START_BUSY;
- s->scl_free = true;
- qemu_irq_lower(s->irq);
- break;
- }
-
- /* Nothing to do if in i2c slave mode */
- if (!I2C_IN_MASTER_MODE(s->i2cstat)) {
- break;
- }
-
- if (v & I2CSTAT_START_BUSY) {
- s->i2cstat &= ~I2CSTAT_LAST_BIT;
- s->i2cstat |= I2CSTAT_START_BUSY; /* Line is busy */
- s->scl_free = false;
-
- /* Generate start bit and send slave address */
- if (i2c_start_transfer(s->bus, s->i2cds >> 1, s->i2cds & 0x1) &&
- (s->i2ccon & I2CCON_ACK_GEN)) {
- s->i2cstat |= I2CSTAT_LAST_BIT;
- } else if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Rx) {
- exynos4210_i2c_data_receive(s);
- }
- exynos4210_i2c_raise_interrupt(s);
- } else {
- i2c_end_transfer(s->bus);
- if (!(s->i2ccon & I2CCON_INT_PEND)) {
- s->i2cstat &= ~I2CSTAT_START_BUSY;
- }
- s->scl_free = true;
- }
- break;
- case I2CADD_ADDR:
- if ((s->i2cstat & I2CSTAT_OUTPUT_EN) == 0) {
- s->i2cadd = v;
- }
- break;
- case I2CDS_ADDR:
- if (s->i2cstat & I2CSTAT_OUTPUT_EN) {
- s->i2cds = v;
- s->scl_free = true;
- if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Tx &&
- (s->i2cstat & I2CSTAT_START_BUSY) &&
- !(s->i2ccon & I2CCON_INT_PEND)) {
- exynos4210_i2c_data_send(s);
- }
- }
- break;
- case I2CLC_ADDR:
- s->i2clc = v;
- break;
- default:
- DPRINT("ERROR: Bad write offset 0x%x\n", (unsigned int)offset);
- break;
- }
-}
-
-static const MemoryRegionOps exynos4210_i2c_ops = {
- .read = exynos4210_i2c_read,
- .write = exynos4210_i2c_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static const VMStateDescription exynos4210_i2c_vmstate = {
- .name = TYPE_EXYNOS4_I2C,
- .version_id = 1,
- .minimum_version_id = 1,
- .fields = (VMStateField[]) {
- VMSTATE_UINT8(i2ccon, Exynos4210I2CState),
- VMSTATE_UINT8(i2cstat, Exynos4210I2CState),
- VMSTATE_UINT8(i2cds, Exynos4210I2CState),
- VMSTATE_UINT8(i2cadd, Exynos4210I2CState),
- VMSTATE_UINT8(i2clc, Exynos4210I2CState),
- VMSTATE_BOOL(scl_free, Exynos4210I2CState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void exynos4210_i2c_reset(DeviceState *d)
-{
- Exynos4210I2CState *s = EXYNOS4_I2C(d);
-
- s->i2ccon = 0x00;
- s->i2cstat = 0x00;
- s->i2cds = 0xFF;
- s->i2clc = 0x00;
- s->i2cadd = 0xFF;
- s->scl_free = true;
-}
-
-static int exynos4210_i2c_realize(SysBusDevice *dev)
-{
- Exynos4210I2CState *s = EXYNOS4_I2C(dev);
-
- memory_region_init_io(&s->iomem, &exynos4210_i2c_ops, s, TYPE_EXYNOS4_I2C,
- EXYNOS4_I2C_MEM_SIZE);
- sysbus_init_mmio(dev, &s->iomem);
- sysbus_init_irq(dev, &s->irq);
- s->bus = i2c_init_bus(&dev->qdev, "i2c");
- return 0;
-}
-
-static void exynos4210_i2c_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *sbdc = SYS_BUS_DEVICE_CLASS(klass);
-
- dc->vmsd = &exynos4210_i2c_vmstate;
- dc->reset = exynos4210_i2c_reset;
- sbdc->init = exynos4210_i2c_realize;
-}
-
-static const TypeInfo exynos4210_i2c_type_info = {
- .name = TYPE_EXYNOS4_I2C,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(Exynos4210I2CState),
- .class_init = exynos4210_i2c_class_init,
-};
-
-static void exynos4210_i2c_register_types(void)
-{
- type_register_static(&exynos4210_i2c_type_info);
-}
-
-type_init(exynos4210_i2c_register_types)
common-obj-$(CONFIG_VERSATILE_I2C) += versatile_i2c.o
common-obj-$(CONFIG_ACPI) += smbus_ich9.o
common-obj-$(CONFIG_APM) += pm_smbus.o
+common-obj-$(CONFIG_BITBANG_I2C) += bitbang_i2c.o
+common-obj-$(CONFIG_EXYNOS4) += exynos4210_i2c.o
+obj-$(CONFIG_OMAP) += omap_i2c.o
--- /dev/null
+/*
+ * Bit-Bang i2c emulation extracted from
+ * Marvell MV88W8618 / Freecom MusicPal emulation.
+ *
+ * Copyright (c) 2008 Jan Kiszka
+ *
+ * This code is licensed under the GNU GPL v2.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+#include "hw/hw.h"
+#include "hw/bitbang_i2c.h"
+#include "hw/sysbus.h"
+
+//#define DEBUG_BITBANG_I2C
+
+#ifdef DEBUG_BITBANG_I2C
+#define DPRINTF(fmt, ...) \
+do { printf("bitbang_i2c: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#endif
+
+typedef enum bitbang_i2c_state {
+ STOPPED = 0,
+ SENDING_BIT7,
+ SENDING_BIT6,
+ SENDING_BIT5,
+ SENDING_BIT4,
+ SENDING_BIT3,
+ SENDING_BIT2,
+ SENDING_BIT1,
+ SENDING_BIT0,
+ WAITING_FOR_ACK,
+ RECEIVING_BIT7,
+ RECEIVING_BIT6,
+ RECEIVING_BIT5,
+ RECEIVING_BIT4,
+ RECEIVING_BIT3,
+ RECEIVING_BIT2,
+ RECEIVING_BIT1,
+ RECEIVING_BIT0,
+ SENDING_ACK,
+ SENT_NACK
+} bitbang_i2c_state;
+
+struct bitbang_i2c_interface {
+ i2c_bus *bus;
+ bitbang_i2c_state state;
+ int last_data;
+ int last_clock;
+ int device_out;
+ uint8_t buffer;
+ int current_addr;
+};
+
+static void bitbang_i2c_enter_stop(bitbang_i2c_interface *i2c)
+{
+ DPRINTF("STOP\n");
+ if (i2c->current_addr >= 0)
+ i2c_end_transfer(i2c->bus);
+ i2c->current_addr = -1;
+ i2c->state = STOPPED;
+}
+
+/* Set device data pin. */
+static int bitbang_i2c_ret(bitbang_i2c_interface *i2c, int level)
+{
+ i2c->device_out = level;
+ //DPRINTF("%d %d %d\n", i2c->last_clock, i2c->last_data, i2c->device_out);
+ return level & i2c->last_data;
+}
+
+/* Leave device data pin unodified. */
+static int bitbang_i2c_nop(bitbang_i2c_interface *i2c)
+{
+ return bitbang_i2c_ret(i2c, i2c->device_out);
+}
+
+/* Returns data line level. */
+int bitbang_i2c_set(bitbang_i2c_interface *i2c, int line, int level)
+{
+ int data;
+
+ if (level != 0 && level != 1) {
+ abort();
+ }
+
+ if (line == BITBANG_I2C_SDA) {
+ if (level == i2c->last_data) {
+ return bitbang_i2c_nop(i2c);
+ }
+ i2c->last_data = level;
+ if (i2c->last_clock == 0) {
+ return bitbang_i2c_nop(i2c);
+ }
+ if (level == 0) {
+ DPRINTF("START\n");
+ /* START condition. */
+ i2c->state = SENDING_BIT7;
+ i2c->current_addr = -1;
+ } else {
+ /* STOP condition. */
+ bitbang_i2c_enter_stop(i2c);
+ }
+ return bitbang_i2c_ret(i2c, 1);
+ }
+
+ data = i2c->last_data;
+ if (i2c->last_clock == level) {
+ return bitbang_i2c_nop(i2c);
+ }
+ i2c->last_clock = level;
+ if (level == 0) {
+ /* State is set/read at the start of the clock pulse.
+ release the data line at the end. */
+ return bitbang_i2c_ret(i2c, 1);
+ }
+ switch (i2c->state) {
+ case STOPPED:
+ case SENT_NACK:
+ return bitbang_i2c_ret(i2c, 1);
+
+ case SENDING_BIT7 ... SENDING_BIT0:
+ i2c->buffer = (i2c->buffer << 1) | data;
+ /* will end up in WAITING_FOR_ACK */
+ i2c->state++;
+ return bitbang_i2c_ret(i2c, 1);
+
+ case WAITING_FOR_ACK:
+ if (i2c->current_addr < 0) {
+ i2c->current_addr = i2c->buffer;
+ DPRINTF("Address 0x%02x\n", i2c->current_addr);
+ i2c_start_transfer(i2c->bus, i2c->current_addr >> 1,
+ i2c->current_addr & 1);
+ } else {
+ DPRINTF("Sent 0x%02x\n", i2c->buffer);
+ i2c_send(i2c->bus, i2c->buffer);
+ }
+ if (i2c->current_addr & 1) {
+ i2c->state = RECEIVING_BIT7;
+ } else {
+ i2c->state = SENDING_BIT7;
+ }
+ return bitbang_i2c_ret(i2c, 0);
+
+ case RECEIVING_BIT7:
+ i2c->buffer = i2c_recv(i2c->bus);
+ DPRINTF("RX byte 0x%02x\n", i2c->buffer);
+ /* Fall through... */
+ case RECEIVING_BIT6 ... RECEIVING_BIT0:
+ data = i2c->buffer >> 7;
+ /* will end up in SENDING_ACK */
+ i2c->state++;
+ i2c->buffer <<= 1;
+ return bitbang_i2c_ret(i2c, data);
+
+ case SENDING_ACK:
+ i2c->state = RECEIVING_BIT7;
+ if (data != 0) {
+ DPRINTF("NACKED\n");
+ i2c->state = SENT_NACK;
+ i2c_nack(i2c->bus);
+ } else {
+ DPRINTF("ACKED\n");
+ }
+ return bitbang_i2c_ret(i2c, 1);
+ }
+ abort();
+}
+
+bitbang_i2c_interface *bitbang_i2c_init(i2c_bus *bus)
+{
+ bitbang_i2c_interface *s;
+
+ s = g_malloc0(sizeof(bitbang_i2c_interface));
+
+ s->bus = bus;
+ s->last_data = 1;
+ s->last_clock = 1;
+ s->device_out = 1;
+
+ return s;
+}
+
+/* GPIO interface. */
+typedef struct {
+ SysBusDevice busdev;
+ MemoryRegion dummy_iomem;
+ bitbang_i2c_interface *bitbang;
+ int last_level;
+ qemu_irq out;
+} GPIOI2CState;
+
+static void bitbang_i2c_gpio_set(void *opaque, int irq, int level)
+{
+ GPIOI2CState *s = opaque;
+
+ level = bitbang_i2c_set(s->bitbang, irq, level);
+ if (level != s->last_level) {
+ s->last_level = level;
+ qemu_set_irq(s->out, level);
+ }
+}
+
+static int gpio_i2c_init(SysBusDevice *dev)
+{
+ GPIOI2CState *s = FROM_SYSBUS(GPIOI2CState, dev);
+ i2c_bus *bus;
+
+ memory_region_init(&s->dummy_iomem, "gpio_i2c", 0);
+ sysbus_init_mmio(dev, &s->dummy_iomem);
+
+ bus = i2c_init_bus(&dev->qdev, "i2c");
+ s->bitbang = bitbang_i2c_init(bus);
+
+ qdev_init_gpio_in(&dev->qdev, bitbang_i2c_gpio_set, 2);
+ qdev_init_gpio_out(&dev->qdev, &s->out, 1);
+
+ return 0;
+}
+
+static void gpio_i2c_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = gpio_i2c_init;
+ dc->desc = "Virtual GPIO to I2C bridge";
+}
+
+static const TypeInfo gpio_i2c_info = {
+ .name = "gpio_i2c",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(GPIOI2CState),
+ .class_init = gpio_i2c_class_init,
+};
+
+static void bitbang_i2c_register_types(void)
+{
+ type_register_static(&gpio_i2c_info);
+}
+
+type_init(bitbang_i2c_register_types)
--- /dev/null
+/*
+ * Exynos4210 I2C Bus Serial Interface Emulation
+ *
+ * Copyright (C) 2012 Samsung Electronics Co Ltd.
+ * Maksim Kozlov, <m.kozlov@samsung.com>
+ * Igor Mitsyanko, <i.mitsyanko@samsung.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/timer.h"
+#include "hw/sysbus.h"
+#include "hw/i2c/i2c.h"
+
+#ifndef EXYNOS4_I2C_DEBUG
+#define EXYNOS4_I2C_DEBUG 0
+#endif
+
+#define TYPE_EXYNOS4_I2C "exynos4210.i2c"
+#define EXYNOS4_I2C(obj) \
+ OBJECT_CHECK(Exynos4210I2CState, (obj), TYPE_EXYNOS4_I2C)
+
+/* Exynos4210 I2C memory map */
+#define EXYNOS4_I2C_MEM_SIZE 0x14
+#define I2CCON_ADDR 0x00 /* control register */
+#define I2CSTAT_ADDR 0x04 /* control/status register */
+#define I2CADD_ADDR 0x08 /* address register */
+#define I2CDS_ADDR 0x0c /* data shift register */
+#define I2CLC_ADDR 0x10 /* line control register */
+
+#define I2CCON_ACK_GEN (1 << 7)
+#define I2CCON_INTRS_EN (1 << 5)
+#define I2CCON_INT_PEND (1 << 4)
+
+#define EXYNOS4_I2C_MODE(reg) (((reg) >> 6) & 3)
+#define I2C_IN_MASTER_MODE(reg) (((reg) >> 6) & 2)
+#define I2CMODE_MASTER_Rx 0x2
+#define I2CMODE_MASTER_Tx 0x3
+#define I2CSTAT_LAST_BIT (1 << 0)
+#define I2CSTAT_OUTPUT_EN (1 << 4)
+#define I2CSTAT_START_BUSY (1 << 5)
+
+
+#if EXYNOS4_I2C_DEBUG
+#define DPRINT(fmt, args...) \
+ do { fprintf(stderr, "QEMU I2C: "fmt, ## args); } while (0)
+
+static const char *exynos4_i2c_get_regname(unsigned offset)
+{
+ switch (offset) {
+ case I2CCON_ADDR:
+ return "I2CCON";
+ case I2CSTAT_ADDR:
+ return "I2CSTAT";
+ case I2CADD_ADDR:
+ return "I2CADD";
+ case I2CDS_ADDR:
+ return "I2CDS";
+ case I2CLC_ADDR:
+ return "I2CLC";
+ default:
+ return "[?]";
+ }
+}
+
+#else
+#define DPRINT(fmt, args...) do { } while (0)
+#endif
+
+typedef struct Exynos4210I2CState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ i2c_bus *bus;
+ qemu_irq irq;
+
+ uint8_t i2ccon;
+ uint8_t i2cstat;
+ uint8_t i2cadd;
+ uint8_t i2cds;
+ uint8_t i2clc;
+ bool scl_free;
+} Exynos4210I2CState;
+
+static inline void exynos4210_i2c_raise_interrupt(Exynos4210I2CState *s)
+{
+ if (s->i2ccon & I2CCON_INTRS_EN) {
+ s->i2ccon |= I2CCON_INT_PEND;
+ qemu_irq_raise(s->irq);
+ }
+}
+
+static void exynos4210_i2c_data_receive(void *opaque)
+{
+ Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
+ int ret;
+
+ s->i2cstat &= ~I2CSTAT_LAST_BIT;
+ s->scl_free = false;
+ ret = i2c_recv(s->bus);
+ if (ret < 0 && (s->i2ccon & I2CCON_ACK_GEN)) {
+ s->i2cstat |= I2CSTAT_LAST_BIT; /* Data is not acknowledged */
+ } else {
+ s->i2cds = ret;
+ }
+ exynos4210_i2c_raise_interrupt(s);
+}
+
+static void exynos4210_i2c_data_send(void *opaque)
+{
+ Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
+
+ s->i2cstat &= ~I2CSTAT_LAST_BIT;
+ s->scl_free = false;
+ if (i2c_send(s->bus, s->i2cds) < 0 && (s->i2ccon & I2CCON_ACK_GEN)) {
+ s->i2cstat |= I2CSTAT_LAST_BIT;
+ }
+ exynos4210_i2c_raise_interrupt(s);
+}
+
+static uint64_t exynos4210_i2c_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
+ uint8_t value;
+
+ switch (offset) {
+ case I2CCON_ADDR:
+ value = s->i2ccon;
+ break;
+ case I2CSTAT_ADDR:
+ value = s->i2cstat;
+ break;
+ case I2CADD_ADDR:
+ value = s->i2cadd;
+ break;
+ case I2CDS_ADDR:
+ value = s->i2cds;
+ s->scl_free = true;
+ if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Rx &&
+ (s->i2cstat & I2CSTAT_START_BUSY) &&
+ !(s->i2ccon & I2CCON_INT_PEND)) {
+ exynos4210_i2c_data_receive(s);
+ }
+ break;
+ case I2CLC_ADDR:
+ value = s->i2clc;
+ break;
+ default:
+ value = 0;
+ DPRINT("ERROR: Bad read offset 0x%x\n", (unsigned int)offset);
+ break;
+ }
+
+ DPRINT("read %s [0x%02x] -> 0x%02x\n", exynos4_i2c_get_regname(offset),
+ (unsigned int)offset, value);
+ return value;
+}
+
+static void exynos4210_i2c_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+ Exynos4210I2CState *s = (Exynos4210I2CState *)opaque;
+ uint8_t v = value & 0xff;
+
+ DPRINT("write %s [0x%02x] <- 0x%02x\n", exynos4_i2c_get_regname(offset),
+ (unsigned int)offset, v);
+
+ switch (offset) {
+ case I2CCON_ADDR:
+ s->i2ccon = (v & ~I2CCON_INT_PEND) | (s->i2ccon & I2CCON_INT_PEND);
+ if ((s->i2ccon & I2CCON_INT_PEND) && !(v & I2CCON_INT_PEND)) {
+ s->i2ccon &= ~I2CCON_INT_PEND;
+ qemu_irq_lower(s->irq);
+ if (!(s->i2ccon & I2CCON_INTRS_EN)) {
+ s->i2cstat &= ~I2CSTAT_START_BUSY;
+ }
+
+ if (s->i2cstat & I2CSTAT_START_BUSY) {
+ if (s->scl_free) {
+ if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Tx) {
+ exynos4210_i2c_data_send(s);
+ } else if (EXYNOS4_I2C_MODE(s->i2cstat) ==
+ I2CMODE_MASTER_Rx) {
+ exynos4210_i2c_data_receive(s);
+ }
+ } else {
+ s->i2ccon |= I2CCON_INT_PEND;
+ qemu_irq_raise(s->irq);
+ }
+ }
+ }
+ break;
+ case I2CSTAT_ADDR:
+ s->i2cstat =
+ (s->i2cstat & I2CSTAT_START_BUSY) | (v & ~I2CSTAT_START_BUSY);
+
+ if (!(s->i2cstat & I2CSTAT_OUTPUT_EN)) {
+ s->i2cstat &= ~I2CSTAT_START_BUSY;
+ s->scl_free = true;
+ qemu_irq_lower(s->irq);
+ break;
+ }
+
+ /* Nothing to do if in i2c slave mode */
+ if (!I2C_IN_MASTER_MODE(s->i2cstat)) {
+ break;
+ }
+
+ if (v & I2CSTAT_START_BUSY) {
+ s->i2cstat &= ~I2CSTAT_LAST_BIT;
+ s->i2cstat |= I2CSTAT_START_BUSY; /* Line is busy */
+ s->scl_free = false;
+
+ /* Generate start bit and send slave address */
+ if (i2c_start_transfer(s->bus, s->i2cds >> 1, s->i2cds & 0x1) &&
+ (s->i2ccon & I2CCON_ACK_GEN)) {
+ s->i2cstat |= I2CSTAT_LAST_BIT;
+ } else if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Rx) {
+ exynos4210_i2c_data_receive(s);
+ }
+ exynos4210_i2c_raise_interrupt(s);
+ } else {
+ i2c_end_transfer(s->bus);
+ if (!(s->i2ccon & I2CCON_INT_PEND)) {
+ s->i2cstat &= ~I2CSTAT_START_BUSY;
+ }
+ s->scl_free = true;
+ }
+ break;
+ case I2CADD_ADDR:
+ if ((s->i2cstat & I2CSTAT_OUTPUT_EN) == 0) {
+ s->i2cadd = v;
+ }
+ break;
+ case I2CDS_ADDR:
+ if (s->i2cstat & I2CSTAT_OUTPUT_EN) {
+ s->i2cds = v;
+ s->scl_free = true;
+ if (EXYNOS4_I2C_MODE(s->i2cstat) == I2CMODE_MASTER_Tx &&
+ (s->i2cstat & I2CSTAT_START_BUSY) &&
+ !(s->i2ccon & I2CCON_INT_PEND)) {
+ exynos4210_i2c_data_send(s);
+ }
+ }
+ break;
+ case I2CLC_ADDR:
+ s->i2clc = v;
+ break;
+ default:
+ DPRINT("ERROR: Bad write offset 0x%x\n", (unsigned int)offset);
+ break;
+ }
+}
+
+static const MemoryRegionOps exynos4210_i2c_ops = {
+ .read = exynos4210_i2c_read,
+ .write = exynos4210_i2c_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static const VMStateDescription exynos4210_i2c_vmstate = {
+ .name = TYPE_EXYNOS4_I2C,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(i2ccon, Exynos4210I2CState),
+ VMSTATE_UINT8(i2cstat, Exynos4210I2CState),
+ VMSTATE_UINT8(i2cds, Exynos4210I2CState),
+ VMSTATE_UINT8(i2cadd, Exynos4210I2CState),
+ VMSTATE_UINT8(i2clc, Exynos4210I2CState),
+ VMSTATE_BOOL(scl_free, Exynos4210I2CState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void exynos4210_i2c_reset(DeviceState *d)
+{
+ Exynos4210I2CState *s = EXYNOS4_I2C(d);
+
+ s->i2ccon = 0x00;
+ s->i2cstat = 0x00;
+ s->i2cds = 0xFF;
+ s->i2clc = 0x00;
+ s->i2cadd = 0xFF;
+ s->scl_free = true;
+}
+
+static int exynos4210_i2c_realize(SysBusDevice *dev)
+{
+ Exynos4210I2CState *s = EXYNOS4_I2C(dev);
+
+ memory_region_init_io(&s->iomem, &exynos4210_i2c_ops, s, TYPE_EXYNOS4_I2C,
+ EXYNOS4_I2C_MEM_SIZE);
+ sysbus_init_mmio(dev, &s->iomem);
+ sysbus_init_irq(dev, &s->irq);
+ s->bus = i2c_init_bus(&dev->qdev, "i2c");
+ return 0;
+}
+
+static void exynos4210_i2c_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *sbdc = SYS_BUS_DEVICE_CLASS(klass);
+
+ dc->vmsd = &exynos4210_i2c_vmstate;
+ dc->reset = exynos4210_i2c_reset;
+ sbdc->init = exynos4210_i2c_realize;
+}
+
+static const TypeInfo exynos4210_i2c_type_info = {
+ .name = TYPE_EXYNOS4_I2C,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(Exynos4210I2CState),
+ .class_init = exynos4210_i2c_class_init,
+};
+
+static void exynos4210_i2c_register_types(void)
+{
+ type_register_static(&exynos4210_i2c_type_info);
+}
+
+type_init(exynos4210_i2c_register_types)
--- /dev/null
+/*
+ * TI OMAP on-chip I2C controller. Only "new I2C" mode supported.
+ *
+ * Copyright (C) 2007 Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * 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 "hw/hw.h"
+#include "hw/i2c/i2c.h"
+#include "hw/arm/omap.h"
+#include "hw/sysbus.h"
+
+
+typedef struct OMAPI2CState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ qemu_irq irq;
+ qemu_irq drq[2];
+ i2c_bus *bus;
+
+ uint8_t revision;
+ void *iclk;
+ void *fclk;
+
+ uint8_t mask;
+ uint16_t stat;
+ uint16_t dma;
+ uint16_t count;
+ int count_cur;
+ uint32_t fifo;
+ int rxlen;
+ int txlen;
+ uint16_t control;
+ uint16_t addr[2];
+ uint8_t divider;
+ uint8_t times[2];
+ uint16_t test;
+} OMAPI2CState;
+
+#define OMAP2_INTR_REV 0x34
+#define OMAP2_GC_REV 0x34
+
+static void omap_i2c_interrupts_update(OMAPI2CState *s)
+{
+ qemu_set_irq(s->irq, s->stat & s->mask);
+ if ((s->dma >> 15) & 1) /* RDMA_EN */
+ qemu_set_irq(s->drq[0], (s->stat >> 3) & 1); /* RRDY */
+ if ((s->dma >> 7) & 1) /* XDMA_EN */
+ qemu_set_irq(s->drq[1], (s->stat >> 4) & 1); /* XRDY */
+}
+
+static void omap_i2c_fifo_run(OMAPI2CState *s)
+{
+ int ack = 1;
+
+ if (!i2c_bus_busy(s->bus))
+ return;
+
+ if ((s->control >> 2) & 1) { /* RM */
+ if ((s->control >> 1) & 1) { /* STP */
+ i2c_end_transfer(s->bus);
+ s->control &= ~(1 << 1); /* STP */
+ s->count_cur = s->count;
+ s->txlen = 0;
+ } else if ((s->control >> 9) & 1) { /* TRX */
+ while (ack && s->txlen)
+ ack = (i2c_send(s->bus,
+ (s->fifo >> ((-- s->txlen) << 3)) &
+ 0xff) >= 0);
+ s->stat |= 1 << 4; /* XRDY */
+ } else {
+ while (s->rxlen < 4)
+ s->fifo |= i2c_recv(s->bus) << ((s->rxlen ++) << 3);
+ s->stat |= 1 << 3; /* RRDY */
+ }
+ } else {
+ if ((s->control >> 9) & 1) { /* TRX */
+ while (ack && s->count_cur && s->txlen) {
+ ack = (i2c_send(s->bus,
+ (s->fifo >> ((-- s->txlen) << 3)) &
+ 0xff) >= 0);
+ s->count_cur --;
+ }
+ if (ack && s->count_cur)
+ s->stat |= 1 << 4; /* XRDY */
+ else
+ s->stat &= ~(1 << 4); /* XRDY */
+ if (!s->count_cur) {
+ s->stat |= 1 << 2; /* ARDY */
+ s->control &= ~(1 << 10); /* MST */
+ }
+ } else {
+ while (s->count_cur && s->rxlen < 4) {
+ s->fifo |= i2c_recv(s->bus) << ((s->rxlen ++) << 3);
+ s->count_cur --;
+ }
+ if (s->rxlen)
+ s->stat |= 1 << 3; /* RRDY */
+ else
+ s->stat &= ~(1 << 3); /* RRDY */
+ }
+ if (!s->count_cur) {
+ if ((s->control >> 1) & 1) { /* STP */
+ i2c_end_transfer(s->bus);
+ s->control &= ~(1 << 1); /* STP */
+ s->count_cur = s->count;
+ s->txlen = 0;
+ } else {
+ s->stat |= 1 << 2; /* ARDY */
+ s->control &= ~(1 << 10); /* MST */
+ }
+ }
+ }
+
+ s->stat |= (!ack) << 1; /* NACK */
+ if (!ack)
+ s->control &= ~(1 << 1); /* STP */
+}
+
+static void omap_i2c_reset(DeviceState *dev)
+{
+ OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState,
+ SYS_BUS_DEVICE(dev));
+ s->mask = 0;
+ s->stat = 0;
+ s->dma = 0;
+ s->count = 0;
+ s->count_cur = 0;
+ s->fifo = 0;
+ s->rxlen = 0;
+ s->txlen = 0;
+ s->control = 0;
+ s->addr[0] = 0;
+ s->addr[1] = 0;
+ s->divider = 0;
+ s->times[0] = 0;
+ s->times[1] = 0;
+ s->test = 0;
+}
+
+static uint32_t omap_i2c_read(void *opaque, hwaddr addr)
+{
+ OMAPI2CState *s = opaque;
+ int offset = addr & OMAP_MPUI_REG_MASK;
+ uint16_t ret;
+
+ switch (offset) {
+ case 0x00: /* I2C_REV */
+ return s->revision; /* REV */
+
+ case 0x04: /* I2C_IE */
+ return s->mask;
+
+ case 0x08: /* I2C_STAT */
+ return s->stat | (i2c_bus_busy(s->bus) << 12);
+
+ case 0x0c: /* I2C_IV */
+ if (s->revision >= OMAP2_INTR_REV)
+ break;
+ ret = ffs(s->stat & s->mask);
+ if (ret)
+ s->stat ^= 1 << (ret - 1);
+ omap_i2c_interrupts_update(s);
+ return ret;
+
+ case 0x10: /* I2C_SYSS */
+ return (s->control >> 15) & 1; /* I2C_EN */
+
+ case 0x14: /* I2C_BUF */
+ return s->dma;
+
+ case 0x18: /* I2C_CNT */
+ return s->count_cur; /* DCOUNT */
+
+ case 0x1c: /* I2C_DATA */
+ ret = 0;
+ if (s->control & (1 << 14)) { /* BE */
+ ret |= ((s->fifo >> 0) & 0xff) << 8;
+ ret |= ((s->fifo >> 8) & 0xff) << 0;
+ } else {
+ ret |= ((s->fifo >> 8) & 0xff) << 8;
+ ret |= ((s->fifo >> 0) & 0xff) << 0;
+ }
+ if (s->rxlen == 1) {
+ s->stat |= 1 << 15; /* SBD */
+ s->rxlen = 0;
+ } else if (s->rxlen > 1) {
+ if (s->rxlen > 2)
+ s->fifo >>= 16;
+ s->rxlen -= 2;
+ } else {
+ /* XXX: remote access (qualifier) error - what's that? */
+ }
+ if (!s->rxlen) {
+ s->stat &= ~(1 << 3); /* RRDY */
+ if (((s->control >> 10) & 1) && /* MST */
+ ((~s->control >> 9) & 1)) { /* TRX */
+ s->stat |= 1 << 2; /* ARDY */
+ s->control &= ~(1 << 10); /* MST */
+ }
+ }
+ s->stat &= ~(1 << 11); /* ROVR */
+ omap_i2c_fifo_run(s);
+ omap_i2c_interrupts_update(s);
+ return ret;
+
+ case 0x20: /* I2C_SYSC */
+ return 0;
+
+ case 0x24: /* I2C_CON */
+ return s->control;
+
+ case 0x28: /* I2C_OA */
+ return s->addr[0];
+
+ case 0x2c: /* I2C_SA */
+ return s->addr[1];
+
+ case 0x30: /* I2C_PSC */
+ return s->divider;
+
+ case 0x34: /* I2C_SCLL */
+ return s->times[0];
+
+ case 0x38: /* I2C_SCLH */
+ return s->times[1];
+
+ case 0x3c: /* I2C_SYSTEST */
+ if (s->test & (1 << 15)) { /* ST_EN */
+ s->test ^= 0xa;
+ return s->test;
+ } else
+ return s->test & ~0x300f;
+ }
+
+ OMAP_BAD_REG(addr);
+ return 0;
+}
+
+static void omap_i2c_write(void *opaque, hwaddr addr,
+ uint32_t value)
+{
+ OMAPI2CState *s = opaque;
+ int offset = addr & OMAP_MPUI_REG_MASK;
+ int nack;
+
+ switch (offset) {
+ case 0x00: /* I2C_REV */
+ case 0x0c: /* I2C_IV */
+ case 0x10: /* I2C_SYSS */
+ OMAP_RO_REG(addr);
+ return;
+
+ case 0x04: /* I2C_IE */
+ s->mask = value & (s->revision < OMAP2_GC_REV ? 0x1f : 0x3f);
+ break;
+
+ case 0x08: /* I2C_STAT */
+ if (s->revision < OMAP2_INTR_REV) {
+ OMAP_RO_REG(addr);
+ return;
+ }
+
+ /* RRDY and XRDY are reset by hardware. (in all versions???) */
+ s->stat &= ~(value & 0x27);
+ omap_i2c_interrupts_update(s);
+ break;
+
+ case 0x14: /* I2C_BUF */
+ s->dma = value & 0x8080;
+ if (value & (1 << 15)) /* RDMA_EN */
+ s->mask &= ~(1 << 3); /* RRDY_IE */
+ if (value & (1 << 7)) /* XDMA_EN */
+ s->mask &= ~(1 << 4); /* XRDY_IE */
+ break;
+
+ case 0x18: /* I2C_CNT */
+ s->count = value; /* DCOUNT */
+ break;
+
+ case 0x1c: /* I2C_DATA */
+ if (s->txlen > 2) {
+ /* XXX: remote access (qualifier) error - what's that? */
+ break;
+ }
+ s->fifo <<= 16;
+ s->txlen += 2;
+ if (s->control & (1 << 14)) { /* BE */
+ s->fifo |= ((value >> 8) & 0xff) << 8;
+ s->fifo |= ((value >> 0) & 0xff) << 0;
+ } else {
+ s->fifo |= ((value >> 0) & 0xff) << 8;
+ s->fifo |= ((value >> 8) & 0xff) << 0;
+ }
+ s->stat &= ~(1 << 10); /* XUDF */
+ if (s->txlen > 2)
+ s->stat &= ~(1 << 4); /* XRDY */
+ omap_i2c_fifo_run(s);
+ omap_i2c_interrupts_update(s);
+ break;
+
+ case 0x20: /* I2C_SYSC */
+ if (s->revision < OMAP2_INTR_REV) {
+ OMAP_BAD_REG(addr);
+ return;
+ }
+
+ if (value & 2)
+ omap_i2c_reset(&s->busdev.qdev);
+ break;
+
+ case 0x24: /* I2C_CON */
+ s->control = value & 0xcf87;
+ if (~value & (1 << 15)) { /* I2C_EN */
+ if (s->revision < OMAP2_INTR_REV)
+ omap_i2c_reset(&s->busdev.qdev);
+ break;
+ }
+ if ((value & (1 << 15)) && !(value & (1 << 10))) { /* MST */
+ fprintf(stderr, "%s: I^2C slave mode not supported\n",
+ __FUNCTION__);
+ break;
+ }
+ if ((value & (1 << 15)) && value & (1 << 8)) { /* XA */
+ fprintf(stderr, "%s: 10-bit addressing mode not supported\n",
+ __FUNCTION__);
+ break;
+ }
+ if ((value & (1 << 15)) && value & (1 << 0)) { /* STT */
+ nack = !!i2c_start_transfer(s->bus, s->addr[1], /* SA */
+ (~value >> 9) & 1); /* TRX */
+ s->stat |= nack << 1; /* NACK */
+ s->control &= ~(1 << 0); /* STT */
+ s->fifo = 0;
+ if (nack)
+ s->control &= ~(1 << 1); /* STP */
+ else {
+ s->count_cur = s->count;
+ omap_i2c_fifo_run(s);
+ }
+ omap_i2c_interrupts_update(s);
+ }
+ break;
+
+ case 0x28: /* I2C_OA */
+ s->addr[0] = value & 0x3ff;
+ break;
+
+ case 0x2c: /* I2C_SA */
+ s->addr[1] = value & 0x3ff;
+ break;
+
+ case 0x30: /* I2C_PSC */
+ s->divider = value;
+ break;
+
+ case 0x34: /* I2C_SCLL */
+ s->times[0] = value;
+ break;
+
+ case 0x38: /* I2C_SCLH */
+ s->times[1] = value;
+ break;
+
+ case 0x3c: /* I2C_SYSTEST */
+ s->test = value & 0xf80f;
+ if (value & (1 << 11)) /* SBB */
+ if (s->revision >= OMAP2_INTR_REV) {
+ s->stat |= 0x3f;
+ omap_i2c_interrupts_update(s);
+ }
+ if (value & (1 << 15)) /* ST_EN */
+ fprintf(stderr, "%s: System Test not supported\n", __FUNCTION__);
+ break;
+
+ default:
+ OMAP_BAD_REG(addr);
+ return;
+ }
+}
+
+static void omap_i2c_writeb(void *opaque, hwaddr addr,
+ uint32_t value)
+{
+ OMAPI2CState *s = opaque;
+ int offset = addr & OMAP_MPUI_REG_MASK;
+
+ switch (offset) {
+ case 0x1c: /* I2C_DATA */
+ if (s->txlen > 2) {
+ /* XXX: remote access (qualifier) error - what's that? */
+ break;
+ }
+ s->fifo <<= 8;
+ s->txlen += 1;
+ s->fifo |= value & 0xff;
+ s->stat &= ~(1 << 10); /* XUDF */
+ if (s->txlen > 2)
+ s->stat &= ~(1 << 4); /* XRDY */
+ omap_i2c_fifo_run(s);
+ omap_i2c_interrupts_update(s);
+ break;
+
+ default:
+ OMAP_BAD_REG(addr);
+ return;
+ }
+}
+
+static const MemoryRegionOps omap_i2c_ops = {
+ .old_mmio = {
+ .read = {
+ omap_badwidth_read16,
+ omap_i2c_read,
+ omap_badwidth_read16,
+ },
+ .write = {
+ omap_i2c_writeb, /* Only the last fifo write can be 8 bit. */
+ omap_i2c_write,
+ omap_badwidth_write16,
+ },
+ },
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static int omap_i2c_init(SysBusDevice *dev)
+{
+ OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState, dev);
+
+ if (!s->fclk) {
+ hw_error("omap_i2c: fclk not connected\n");
+ }
+ if (s->revision >= OMAP2_INTR_REV && !s->iclk) {
+ /* Note that OMAP1 doesn't have a separate interface clock */
+ hw_error("omap_i2c: iclk not connected\n");
+ }
+ sysbus_init_irq(dev, &s->irq);
+ sysbus_init_irq(dev, &s->drq[0]);
+ sysbus_init_irq(dev, &s->drq[1]);
+ memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap.i2c",
+ (s->revision < OMAP2_INTR_REV) ? 0x800 : 0x1000);
+ sysbus_init_mmio(dev, &s->iomem);
+ s->bus = i2c_init_bus(&dev->qdev, NULL);
+ return 0;
+}
+
+static Property omap_i2c_properties[] = {
+ DEFINE_PROP_UINT8("revision", OMAPI2CState, revision, 0),
+ DEFINE_PROP_PTR("iclk", OMAPI2CState, iclk),
+ DEFINE_PROP_PTR("fclk", OMAPI2CState, fclk),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void omap_i2c_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+ k->init = omap_i2c_init;
+ dc->props = omap_i2c_properties;
+ dc->reset = omap_i2c_reset;
+}
+
+static const TypeInfo omap_i2c_info = {
+ .name = "omap_i2c",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(OMAPI2CState),
+ .class_init = omap_i2c_class_init,
+};
+
+static void omap_i2c_register_types(void)
+{
+ type_register_static(&omap_i2c_info);
+}
+
+i2c_bus *omap_i2c_bus(DeviceState *omap_i2c)
+{
+ OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState, SYS_BUS_DEVICE(omap_i2c));
+ return s->bus;
+}
+
+type_init(omap_i2c_register_types)
+++ /dev/null
-/*
- * TI OMAP on-chip I2C controller. Only "new I2C" mode supported.
- *
- * Copyright (C) 2007 Andrzej Zaborowski <balrog@zabor.org>
- *
- * 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 "hw/hw.h"
-#include "hw/i2c/i2c.h"
-#include "hw/arm/omap.h"
-#include "hw/sysbus.h"
-
-
-typedef struct OMAPI2CState {
- SysBusDevice busdev;
- MemoryRegion iomem;
- qemu_irq irq;
- qemu_irq drq[2];
- i2c_bus *bus;
-
- uint8_t revision;
- void *iclk;
- void *fclk;
-
- uint8_t mask;
- uint16_t stat;
- uint16_t dma;
- uint16_t count;
- int count_cur;
- uint32_t fifo;
- int rxlen;
- int txlen;
- uint16_t control;
- uint16_t addr[2];
- uint8_t divider;
- uint8_t times[2];
- uint16_t test;
-} OMAPI2CState;
-
-#define OMAP2_INTR_REV 0x34
-#define OMAP2_GC_REV 0x34
-
-static void omap_i2c_interrupts_update(OMAPI2CState *s)
-{
- qemu_set_irq(s->irq, s->stat & s->mask);
- if ((s->dma >> 15) & 1) /* RDMA_EN */
- qemu_set_irq(s->drq[0], (s->stat >> 3) & 1); /* RRDY */
- if ((s->dma >> 7) & 1) /* XDMA_EN */
- qemu_set_irq(s->drq[1], (s->stat >> 4) & 1); /* XRDY */
-}
-
-static void omap_i2c_fifo_run(OMAPI2CState *s)
-{
- int ack = 1;
-
- if (!i2c_bus_busy(s->bus))
- return;
-
- if ((s->control >> 2) & 1) { /* RM */
- if ((s->control >> 1) & 1) { /* STP */
- i2c_end_transfer(s->bus);
- s->control &= ~(1 << 1); /* STP */
- s->count_cur = s->count;
- s->txlen = 0;
- } else if ((s->control >> 9) & 1) { /* TRX */
- while (ack && s->txlen)
- ack = (i2c_send(s->bus,
- (s->fifo >> ((-- s->txlen) << 3)) &
- 0xff) >= 0);
- s->stat |= 1 << 4; /* XRDY */
- } else {
- while (s->rxlen < 4)
- s->fifo |= i2c_recv(s->bus) << ((s->rxlen ++) << 3);
- s->stat |= 1 << 3; /* RRDY */
- }
- } else {
- if ((s->control >> 9) & 1) { /* TRX */
- while (ack && s->count_cur && s->txlen) {
- ack = (i2c_send(s->bus,
- (s->fifo >> ((-- s->txlen) << 3)) &
- 0xff) >= 0);
- s->count_cur --;
- }
- if (ack && s->count_cur)
- s->stat |= 1 << 4; /* XRDY */
- else
- s->stat &= ~(1 << 4); /* XRDY */
- if (!s->count_cur) {
- s->stat |= 1 << 2; /* ARDY */
- s->control &= ~(1 << 10); /* MST */
- }
- } else {
- while (s->count_cur && s->rxlen < 4) {
- s->fifo |= i2c_recv(s->bus) << ((s->rxlen ++) << 3);
- s->count_cur --;
- }
- if (s->rxlen)
- s->stat |= 1 << 3; /* RRDY */
- else
- s->stat &= ~(1 << 3); /* RRDY */
- }
- if (!s->count_cur) {
- if ((s->control >> 1) & 1) { /* STP */
- i2c_end_transfer(s->bus);
- s->control &= ~(1 << 1); /* STP */
- s->count_cur = s->count;
- s->txlen = 0;
- } else {
- s->stat |= 1 << 2; /* ARDY */
- s->control &= ~(1 << 10); /* MST */
- }
- }
- }
-
- s->stat |= (!ack) << 1; /* NACK */
- if (!ack)
- s->control &= ~(1 << 1); /* STP */
-}
-
-static void omap_i2c_reset(DeviceState *dev)
-{
- OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState,
- SYS_BUS_DEVICE(dev));
- s->mask = 0;
- s->stat = 0;
- s->dma = 0;
- s->count = 0;
- s->count_cur = 0;
- s->fifo = 0;
- s->rxlen = 0;
- s->txlen = 0;
- s->control = 0;
- s->addr[0] = 0;
- s->addr[1] = 0;
- s->divider = 0;
- s->times[0] = 0;
- s->times[1] = 0;
- s->test = 0;
-}
-
-static uint32_t omap_i2c_read(void *opaque, hwaddr addr)
-{
- OMAPI2CState *s = opaque;
- int offset = addr & OMAP_MPUI_REG_MASK;
- uint16_t ret;
-
- switch (offset) {
- case 0x00: /* I2C_REV */
- return s->revision; /* REV */
-
- case 0x04: /* I2C_IE */
- return s->mask;
-
- case 0x08: /* I2C_STAT */
- return s->stat | (i2c_bus_busy(s->bus) << 12);
-
- case 0x0c: /* I2C_IV */
- if (s->revision >= OMAP2_INTR_REV)
- break;
- ret = ffs(s->stat & s->mask);
- if (ret)
- s->stat ^= 1 << (ret - 1);
- omap_i2c_interrupts_update(s);
- return ret;
-
- case 0x10: /* I2C_SYSS */
- return (s->control >> 15) & 1; /* I2C_EN */
-
- case 0x14: /* I2C_BUF */
- return s->dma;
-
- case 0x18: /* I2C_CNT */
- return s->count_cur; /* DCOUNT */
-
- case 0x1c: /* I2C_DATA */
- ret = 0;
- if (s->control & (1 << 14)) { /* BE */
- ret |= ((s->fifo >> 0) & 0xff) << 8;
- ret |= ((s->fifo >> 8) & 0xff) << 0;
- } else {
- ret |= ((s->fifo >> 8) & 0xff) << 8;
- ret |= ((s->fifo >> 0) & 0xff) << 0;
- }
- if (s->rxlen == 1) {
- s->stat |= 1 << 15; /* SBD */
- s->rxlen = 0;
- } else if (s->rxlen > 1) {
- if (s->rxlen > 2)
- s->fifo >>= 16;
- s->rxlen -= 2;
- } else {
- /* XXX: remote access (qualifier) error - what's that? */
- }
- if (!s->rxlen) {
- s->stat &= ~(1 << 3); /* RRDY */
- if (((s->control >> 10) & 1) && /* MST */
- ((~s->control >> 9) & 1)) { /* TRX */
- s->stat |= 1 << 2; /* ARDY */
- s->control &= ~(1 << 10); /* MST */
- }
- }
- s->stat &= ~(1 << 11); /* ROVR */
- omap_i2c_fifo_run(s);
- omap_i2c_interrupts_update(s);
- return ret;
-
- case 0x20: /* I2C_SYSC */
- return 0;
-
- case 0x24: /* I2C_CON */
- return s->control;
-
- case 0x28: /* I2C_OA */
- return s->addr[0];
-
- case 0x2c: /* I2C_SA */
- return s->addr[1];
-
- case 0x30: /* I2C_PSC */
- return s->divider;
-
- case 0x34: /* I2C_SCLL */
- return s->times[0];
-
- case 0x38: /* I2C_SCLH */
- return s->times[1];
-
- case 0x3c: /* I2C_SYSTEST */
- if (s->test & (1 << 15)) { /* ST_EN */
- s->test ^= 0xa;
- return s->test;
- } else
- return s->test & ~0x300f;
- }
-
- OMAP_BAD_REG(addr);
- return 0;
-}
-
-static void omap_i2c_write(void *opaque, hwaddr addr,
- uint32_t value)
-{
- OMAPI2CState *s = opaque;
- int offset = addr & OMAP_MPUI_REG_MASK;
- int nack;
-
- switch (offset) {
- case 0x00: /* I2C_REV */
- case 0x0c: /* I2C_IV */
- case 0x10: /* I2C_SYSS */
- OMAP_RO_REG(addr);
- return;
-
- case 0x04: /* I2C_IE */
- s->mask = value & (s->revision < OMAP2_GC_REV ? 0x1f : 0x3f);
- break;
-
- case 0x08: /* I2C_STAT */
- if (s->revision < OMAP2_INTR_REV) {
- OMAP_RO_REG(addr);
- return;
- }
-
- /* RRDY and XRDY are reset by hardware. (in all versions???) */
- s->stat &= ~(value & 0x27);
- omap_i2c_interrupts_update(s);
- break;
-
- case 0x14: /* I2C_BUF */
- s->dma = value & 0x8080;
- if (value & (1 << 15)) /* RDMA_EN */
- s->mask &= ~(1 << 3); /* RRDY_IE */
- if (value & (1 << 7)) /* XDMA_EN */
- s->mask &= ~(1 << 4); /* XRDY_IE */
- break;
-
- case 0x18: /* I2C_CNT */
- s->count = value; /* DCOUNT */
- break;
-
- case 0x1c: /* I2C_DATA */
- if (s->txlen > 2) {
- /* XXX: remote access (qualifier) error - what's that? */
- break;
- }
- s->fifo <<= 16;
- s->txlen += 2;
- if (s->control & (1 << 14)) { /* BE */
- s->fifo |= ((value >> 8) & 0xff) << 8;
- s->fifo |= ((value >> 0) & 0xff) << 0;
- } else {
- s->fifo |= ((value >> 0) & 0xff) << 8;
- s->fifo |= ((value >> 8) & 0xff) << 0;
- }
- s->stat &= ~(1 << 10); /* XUDF */
- if (s->txlen > 2)
- s->stat &= ~(1 << 4); /* XRDY */
- omap_i2c_fifo_run(s);
- omap_i2c_interrupts_update(s);
- break;
-
- case 0x20: /* I2C_SYSC */
- if (s->revision < OMAP2_INTR_REV) {
- OMAP_BAD_REG(addr);
- return;
- }
-
- if (value & 2)
- omap_i2c_reset(&s->busdev.qdev);
- break;
-
- case 0x24: /* I2C_CON */
- s->control = value & 0xcf87;
- if (~value & (1 << 15)) { /* I2C_EN */
- if (s->revision < OMAP2_INTR_REV)
- omap_i2c_reset(&s->busdev.qdev);
- break;
- }
- if ((value & (1 << 15)) && !(value & (1 << 10))) { /* MST */
- fprintf(stderr, "%s: I^2C slave mode not supported\n",
- __FUNCTION__);
- break;
- }
- if ((value & (1 << 15)) && value & (1 << 8)) { /* XA */
- fprintf(stderr, "%s: 10-bit addressing mode not supported\n",
- __FUNCTION__);
- break;
- }
- if ((value & (1 << 15)) && value & (1 << 0)) { /* STT */
- nack = !!i2c_start_transfer(s->bus, s->addr[1], /* SA */
- (~value >> 9) & 1); /* TRX */
- s->stat |= nack << 1; /* NACK */
- s->control &= ~(1 << 0); /* STT */
- s->fifo = 0;
- if (nack)
- s->control &= ~(1 << 1); /* STP */
- else {
- s->count_cur = s->count;
- omap_i2c_fifo_run(s);
- }
- omap_i2c_interrupts_update(s);
- }
- break;
-
- case 0x28: /* I2C_OA */
- s->addr[0] = value & 0x3ff;
- break;
-
- case 0x2c: /* I2C_SA */
- s->addr[1] = value & 0x3ff;
- break;
-
- case 0x30: /* I2C_PSC */
- s->divider = value;
- break;
-
- case 0x34: /* I2C_SCLL */
- s->times[0] = value;
- break;
-
- case 0x38: /* I2C_SCLH */
- s->times[1] = value;
- break;
-
- case 0x3c: /* I2C_SYSTEST */
- s->test = value & 0xf80f;
- if (value & (1 << 11)) /* SBB */
- if (s->revision >= OMAP2_INTR_REV) {
- s->stat |= 0x3f;
- omap_i2c_interrupts_update(s);
- }
- if (value & (1 << 15)) /* ST_EN */
- fprintf(stderr, "%s: System Test not supported\n", __FUNCTION__);
- break;
-
- default:
- OMAP_BAD_REG(addr);
- return;
- }
-}
-
-static void omap_i2c_writeb(void *opaque, hwaddr addr,
- uint32_t value)
-{
- OMAPI2CState *s = opaque;
- int offset = addr & OMAP_MPUI_REG_MASK;
-
- switch (offset) {
- case 0x1c: /* I2C_DATA */
- if (s->txlen > 2) {
- /* XXX: remote access (qualifier) error - what's that? */
- break;
- }
- s->fifo <<= 8;
- s->txlen += 1;
- s->fifo |= value & 0xff;
- s->stat &= ~(1 << 10); /* XUDF */
- if (s->txlen > 2)
- s->stat &= ~(1 << 4); /* XRDY */
- omap_i2c_fifo_run(s);
- omap_i2c_interrupts_update(s);
- break;
-
- default:
- OMAP_BAD_REG(addr);
- return;
- }
-}
-
-static const MemoryRegionOps omap_i2c_ops = {
- .old_mmio = {
- .read = {
- omap_badwidth_read16,
- omap_i2c_read,
- omap_badwidth_read16,
- },
- .write = {
- omap_i2c_writeb, /* Only the last fifo write can be 8 bit. */
- omap_i2c_write,
- omap_badwidth_write16,
- },
- },
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static int omap_i2c_init(SysBusDevice *dev)
-{
- OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState, dev);
-
- if (!s->fclk) {
- hw_error("omap_i2c: fclk not connected\n");
- }
- if (s->revision >= OMAP2_INTR_REV && !s->iclk) {
- /* Note that OMAP1 doesn't have a separate interface clock */
- hw_error("omap_i2c: iclk not connected\n");
- }
- sysbus_init_irq(dev, &s->irq);
- sysbus_init_irq(dev, &s->drq[0]);
- sysbus_init_irq(dev, &s->drq[1]);
- memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap.i2c",
- (s->revision < OMAP2_INTR_REV) ? 0x800 : 0x1000);
- sysbus_init_mmio(dev, &s->iomem);
- s->bus = i2c_init_bus(&dev->qdev, NULL);
- return 0;
-}
-
-static Property omap_i2c_properties[] = {
- DEFINE_PROP_UINT8("revision", OMAPI2CState, revision, 0),
- DEFINE_PROP_PTR("iclk", OMAPI2CState, iclk),
- DEFINE_PROP_PTR("fclk", OMAPI2CState, fclk),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void omap_i2c_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
- k->init = omap_i2c_init;
- dc->props = omap_i2c_properties;
- dc->reset = omap_i2c_reset;
-}
-
-static const TypeInfo omap_i2c_info = {
- .name = "omap_i2c",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(OMAPI2CState),
- .class_init = omap_i2c_class_init,
-};
-
-static void omap_i2c_register_types(void)
-{
- type_register_static(&omap_i2c_info);
-}
-
-i2c_bus *omap_i2c_bus(DeviceState *omap_i2c)
-{
- OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState, SYS_BUS_DEVICE(omap_i2c));
- return s->bus;
-}
-
-type_init(omap_i2c_register_types)
projects / qemu.git / commitdiff