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Minor changes to: 

Add an SMBus config entry
 
 Cleanup/simplify/document some I2C interfaces
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Merge remote-tracking branch 'remotes/cminyard/tags/for-qemu-i2c-5' into staging

Minor changes to:

Add an SMBus config entry

Cleanup/simplify/document some I2C interfaces

# gpg: Signature made Thu 16 Jul 2020 18:46:55 BST
# gpg:                using RSA key FD0D5CE67CE0F59A6688268661F38C90919BFF81
# gpg: Good signature from "Corey Minyard <cminyard@mvista.com>" [unknown]
# gpg:                 aka "Corey Minyard <minyard@acm.org>" [unknown]
# gpg:                 aka "Corey Minyard <corey@minyard.net>" [unknown]
# gpg:                 aka "Corey Minyard <minyard@mvista.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: FD0D 5CE6 7CE0 F59A 6688  2686 61F3 8C90 919B FF81

* remotes/cminyard/tags/for-qemu-i2c-5:
  hw/i2c: Document the I2C qdev helpers
  hw/i2c: Rename i2c_create_slave() as i2c_slave_create_simple()
  hw/i2c: Rename i2c_realize_and_unref() as i2c_slave_realize_and_unref()
  hw/i2c: Rename i2c_try_create_slave() as i2c_slave_new()
  hw/i2c/aspeed_i2c: Simplify aspeed_i2c_get_bus()
  hw/i2c/Kconfig: Add an entry for the SMBus

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-07-20 11:03:07 +01:00
parent d69cda7ed7 73d5f22ecb
commit 873ec69aeb
20 changed files with 131 additions and 77 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
hw/arm/aspeed.c
View File

@ -386,14 +386,14 @@ static void palmetto_bmc_i2c_init(AspeedMachineState *bmc)
/* The palmetto platform expects a ds3231 RTC but a ds1338 is
* enough to provide basic RTC features. Alarms will be missing */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), "ds1338", 0x68);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 0), "ds1338", 0x68);
smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 0), 0x50,
smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50,
eeprom_buf);
/* add a TMP423 temperature sensor */
dev = i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2),
"tmp423", 0x4c);
dev = DEVICE(i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 2),
"tmp423", 0x4c));
object_property_set_int(OBJECT(dev), "temperature0", 31000, &error_abort);
object_property_set_int(OBJECT(dev), "temperature1", 28000, &error_abort);
object_property_set_int(OBJECT(dev), "temperature2", 20000, &error_abort);
@ -405,16 +405,16 @@ static void ast2500_evb_i2c_init(AspeedMachineState *bmc)
AspeedSoCState *soc = &bmc->soc;
uint8_t *eeprom_buf = g_malloc0(8 * 1024);
smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), 0x50,
smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 3), 0x50,
eeprom_buf);
/* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7),
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 7),
TYPE_TMP105, 0x4d);
/* The AST2500 EVB does not have an RTC. Let's pretend that one is
* plugged on the I2C bus header */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 11), "ds1338", 0x32);
}
static void ast2600_evb_i2c_init(AspeedMachineState *bmc)
@ -429,36 +429,36 @@ static void romulus_bmc_i2c_init(AspeedMachineState *bmc)
/* The romulus board expects Epson RX8900 I2C RTC but a ds1338 is
* good enough */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 11), "ds1338", 0x32);
}
static void swift_bmc_i2c_init(AspeedMachineState *bmc)
{
AspeedSoCState *soc = &bmc->soc;
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3), "pca9552", 0x60);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 3), "pca9552", 0x60);
/* The swift board expects a TMP275 but a TMP105 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "tmp105", 0x48);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 7), "tmp105", 0x48);
/* The swift board expects a pca9551 but a pca9552 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 7), "pca9552", 0x60);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 7), "pca9552", 0x60);
/* The swift board expects an Epson RX8900 RTC but a ds1338 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "ds1338", 0x32);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "pca9552", 0x60);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 8), "ds1338", 0x32);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 8), "pca9552", 0x60);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "tmp423", 0x4c);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 9), "tmp423", 0x4c);
/* The swift board expects a pca9539 but a pca9552 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "pca9552", 0x74);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 9), "pca9552", 0x74);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 10), "tmp423", 0x4c);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 10), "tmp423", 0x4c);
/* The swift board expects a pca9539 but a pca9552 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 10), "pca9552",
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 10), "pca9552",
0x74);
/* The swift board expects a TMP275 but a TMP105 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 12), "tmp105", 0x48);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 12), "tmp105", 0x4a);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 12), "tmp105", 0x48);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 12), "tmp105", 0x4a);
}
static void sonorapass_bmc_i2c_init(AspeedMachineState *bmc)
@ -466,32 +466,32 @@ static void sonorapass_bmc_i2c_init(AspeedMachineState *bmc)
AspeedSoCState *soc = &bmc->soc;
/* bus 2 : */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), "tmp105", 0x48);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 2), "tmp105", 0x49);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 2), "tmp105", 0x48);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 2), "tmp105", 0x49);
/* bus 2 : pca9546 @ 0x73 */
/* bus 3 : pca9548 @ 0x70 */
/* bus 4 : */
uint8_t *eeprom4_54 = g_malloc0(8 * 1024);
smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), 0x54,
smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 4), 0x54,
eeprom4_54);
/* PCA9539 @ 0x76, but PCA9552 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "pca9552", 0x76);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 4), "pca9552", 0x76);
/* PCA9539 @ 0x77, but PCA9552 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "pca9552", 0x77);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 4), "pca9552", 0x77);
/* bus 6 : */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 6), "tmp105", 0x48);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 6), "tmp105", 0x49);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 6), "tmp105", 0x48);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 6), "tmp105", 0x49);
/* bus 6 : pca9546 @ 0x73 */
/* bus 8 : */
uint8_t *eeprom8_56 = g_malloc0(8 * 1024);
smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), 0x56,
smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 8), 0x56,
eeprom8_56);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "pca9552", 0x60);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 8), "pca9552", 0x61);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 8), "pca9552", 0x60);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 8), "pca9552", 0x61);
/* bus 8 : adc128d818 @ 0x1d */
/* bus 8 : adc128d818 @ 0x1f */
@ -514,28 +514,30 @@ static void witherspoon_bmc_i2c_init(AspeedMachineState *bmc)
/* Bus 3: TODO bmp280@77 */
/* Bus 3: TODO max31785@52 */
/* Bus 3: TODO dps310@76 */
dev = i2c_try_create_slave(TYPE_PCA9552, 0x60);
dev = DEVICE(i2c_slave_new(TYPE_PCA9552, 0x60));
qdev_prop_set_string(dev, "description", "pca1");
i2c_realize_and_unref(dev, aspeed_i2c_get_bus(DEVICE(&soc->i2c), 3),
&error_fatal);
i2c_slave_realize_and_unref(I2C_SLAVE(dev),
aspeed_i2c_get_bus(&soc->i2c, 3),
&error_fatal);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c);
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 4), "tmp423", 0x4c);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 5), "tmp423", 0x4c);
/* The Witherspoon expects a TMP275 but a TMP105 is compatible */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), TYPE_TMP105,
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 9), TYPE_TMP105,
0x4a);
/* The witherspoon board expects Epson RX8900 I2C RTC but a ds1338 is
* good enough */
i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), "ds1338", 0x32);
i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 11), "ds1338", 0x32);
smbus_eeprom_init_one(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11), 0x51,
smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 11), 0x51,
eeprom_buf);
dev = i2c_try_create_slave(TYPE_PCA9552, 0x60);
dev = DEVICE(i2c_slave_new(TYPE_PCA9552, 0x60));
qdev_prop_set_string(dev, "description", "pca0");
i2c_realize_and_unref(dev, aspeed_i2c_get_bus(DEVICE(&soc->i2c), 11),
&error_fatal);
i2c_slave_realize_and_unref(I2C_SLAVE(dev),
aspeed_i2c_get_bus(&soc->i2c, 11),
&error_fatal);
/* Bus 11: TODO ucd90160@64 */
}

4
hw/arm/musicpal.c
View File

@ -1584,7 +1584,7 @@ static void musicpal_init(MachineState *machine)
DeviceState *i2c_dev;
DeviceState *lcd_dev;
DeviceState *key_dev;
DeviceState *wm8750_dev;
I2CSlave *wm8750_dev;
SysBusDevice *s;
I2CBus *i2c;
int i;
@ -1687,7 +1687,7 @@ static void musicpal_init(MachineState *machine)
qdev_connect_gpio_out(key_dev, i, qdev_get_gpio_in(dev, i + 15));
}
wm8750_dev = i2c_create_slave(i2c, TYPE_WM8750, MP_WM_ADDR);
wm8750_dev = i2c_slave_create_simple(i2c, TYPE_WM8750, MP_WM_ADDR);
dev = qdev_new(TYPE_MV88W8618_AUDIO);
s = SYS_BUS_DEVICE(dev);
object_property_set_link(OBJECT(dev), "wm8750", OBJECT(wm8750_dev),

8
hw/arm/nseries.c
View File

@ -215,7 +215,7 @@ static void n8x0_i2c_setup(struct n800_s *s)
I2CBus *i2c = omap_i2c_bus(s->mpu->i2c[0]);
/* Attach a menelaus PM chip */
dev = i2c_create_slave(i2c, "twl92230", N8X0_MENELAUS_ADDR);
dev = DEVICE(i2c_slave_create_simple(i2c, "twl92230", N8X0_MENELAUS_ADDR));
qdev_connect_gpio_out(dev, 3,
qdev_get_gpio_in(s->mpu->ih[0],
OMAP_INT_24XX_SYS_NIRQ));
@ -224,7 +224,7 @@ static void n8x0_i2c_setup(struct n800_s *s)
qemu_register_powerdown_notifier(&n8x0_system_powerdown_notifier);
/* Attach a TMP105 PM chip (A0 wired to ground) */
dev = i2c_create_slave(i2c, TYPE_TMP105, N8X0_TMP105_ADDR);
dev = DEVICE(i2c_slave_create_simple(i2c, TYPE_TMP105, N8X0_TMP105_ADDR));
qdev_connect_gpio_out(dev, 0, tmp_irq);
}
@ -416,8 +416,8 @@ static void n810_kbd_setup(struct n800_s *s)
/* Attach the LM8322 keyboard to the I2C bus,
* should happen in n8x0_i2c_setup and s->kbd be initialised here. */
s->kbd = i2c_create_slave(omap_i2c_bus(s->mpu->i2c[0]),
"lm8323", N810_LM8323_ADDR);
s->kbd = DEVICE(i2c_slave_create_simple(omap_i2c_bus(s->mpu->i2c[0]),
"lm8323", N810_LM8323_ADDR));
qdev_connect_gpio_out(s->kbd, 0, kbd_irq);
}

5
hw/arm/pxa2xx.c
View File

@ -1522,8 +1522,9 @@ PXA2xxI2CState *pxa2xx_i2c_init(hwaddr base,
s = PXA2XX_I2C(i2c_dev);
/* FIXME: Should the slave device really be on a separate bus? */
i2cbus = i2c_init_bus(dev, "dummy");
dev = i2c_create_slave(i2cbus, TYPE_PXA2XX_I2C_SLAVE, 0);
s->slave = PXA2XX_I2C_SLAVE(dev);
s->slave = PXA2XX_I2C_SLAVE(i2c_slave_create_simple(i2cbus,
TYPE_PXA2XX_I2C_SLAVE,
0));
s->slave->host = s;
return s;

2
hw/arm/realview.c
View File

@ -285,7 +285,7 @@ static void realview_init(MachineState *machine,
dev = sysbus_create_simple(TYPE_VERSATILE_I2C, 0x10002000, NULL);
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
i2c_create_slave(i2c, "ds1338", 0x68);
i2c_slave_create_simple(i2c, "ds1338", 0x68);
/* Memory map for RealView Emulation Baseboard: */
/* 0x10000000 System registers. */

4
hw/arm/spitz.c
View File

@ -787,7 +787,7 @@ static void spitz_i2c_setup(PXA2xxState *cpu)
DeviceState *wm;
/* Attach a WM8750 to the bus */
wm = i2c_create_slave(bus, TYPE_WM8750, 0);
wm = DEVICE(i2c_slave_create_simple(bus, TYPE_WM8750, 0));
spitz_wm8750_addr(wm, 0, 0);
qdev_connect_gpio_out(cpu->gpio, SPITZ_GPIO_WM,
@ -802,7 +802,7 @@ static void spitz_i2c_setup(PXA2xxState *cpu)
static void spitz_akita_i2c_setup(PXA2xxState *cpu)
{
/* Attach a Max7310 to Akita I2C bus. */
i2c_create_slave(pxa2xx_i2c_bus(cpu->i2c[0]), "max7310",
i2c_slave_create_simple(pxa2xx_i2c_bus(cpu->i2c[0]), "max7310",
AKITA_MAX_ADDR);
}

2
hw/arm/stellaris.c
View File

@ -1380,7 +1380,7 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
qdev_get_gpio_in(nvic, 8));
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
if (board->peripherals & BP_OLED_I2C) {
i2c_create_slave(i2c, "ssd0303", 0x3d);
i2c_slave_create_simple(i2c, "ssd0303", 0x3d);
}
}

2
hw/arm/tosa.c
View File

@ -234,7 +234,7 @@ static uint8_t tosa_dac_recv(I2CSlave *s)
static void tosa_tg_init(PXA2xxState *cpu)
{
I2CBus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
i2c_create_slave(bus, TYPE_TOSA_DAC, DAC_BASE);
i2c_slave_create_simple(bus, TYPE_TOSA_DAC, DAC_BASE);
ssi_create_slave(cpu->ssp[1], "tosa-ssp");
}

2
hw/arm/versatilepb.c
View File

@ -317,7 +317,7 @@ static void versatile_init(MachineState *machine, int board_id)
dev = sysbus_create_simple(TYPE_VERSATILE_I2C, 0x10002000, NULL);
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
i2c_create_slave(i2c, "ds1338", 0x68);
i2c_slave_create_simple(i2c, "ds1338", 0x68);
/* Add PL041 AACI Interface to the LM4549 codec */
pl041 = qdev_new("pl041");

2
hw/arm/vexpress.c
View File

@ -642,7 +642,7 @@ static void vexpress_common_init(MachineState *machine)
dev = sysbus_create_simple(TYPE_VERSATILE_I2C, map[VE_SERIALDVI], NULL);
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
i2c_create_slave(i2c, "sii9022", 0x39);
i2c_slave_create_simple(i2c, "sii9022", 0x39);
sysbus_create_simple("pl031", map[VE_RTC], pic[4]); /* RTC */

4
hw/arm/z2.c
View File

@ -330,8 +330,8 @@ static void z2_init(MachineState *machine)
type_register_static(&aer915_info);
z2_lcd = ssi_create_slave(mpu->ssp[1], TYPE_ZIPIT_LCD);
bus = pxa2xx_i2c_bus(mpu->i2c[0]);
i2c_create_slave(bus, TYPE_AER915, 0x55);
wm = i2c_create_slave(bus, TYPE_WM8750, 0x1b);
i2c_slave_create_simple(bus, TYPE_AER915, 0x55);
wm = DEVICE(i2c_slave_create_simple(bus, TYPE_WM8750, 0x1b));
mpu->i2s->opaque = wm;
mpu->i2s->codec_out = wm8750_dac_dat;
mpu->i2s->codec_in = wm8750_adc_dat;

2
hw/display/sii9022.c
View File

@ -161,7 +161,7 @@ static void sii9022_realize(DeviceState *dev, Error **errp)
I2CBus *bus;
bus = I2C_BUS(qdev_get_parent_bus(dev));
i2c_create_slave(bus, TYPE_I2CDDC, 0x50);
i2c_slave_create_simple(bus, TYPE_I2CDDC, 0x50);
}
static void sii9022_class_init(ObjectClass *klass, void *data)

8
hw/i2c/Kconfig
View File

@ -1,9 +1,13 @@
config I2C
bool
config SMBUS
bool
select I2C
config SMBUS_EEPROM
bool
depends on I2C
select SMBUS
config VERSATILE_I2C
bool
@ -11,7 +15,7 @@ config VERSATILE_I2C
config ACPI_SMBUS
bool
select I2C
select SMBUS
config BITBANG_I2C
bool

3
hw/i2c/Makefile.objs
View File

@ -1,4 +1,5 @@
common-obj-$(CONFIG_I2C) += core.o smbus_slave.o smbus_master.o
common-obj-$(CONFIG_I2C) += core.o
common-obj-$(CONFIG_SMBUS) += smbus_slave.o smbus_master.o
common-obj-$(CONFIG_SMBUS_EEPROM) += smbus_eeprom.o
common-obj-$(CONFIG_VERSATILE_I2C) += versatile_i2c.o
common-obj-$(CONFIG_ACPI_X86_ICH) += smbus_ich9.o

3
hw/i2c/aspeed_i2c.c
View File

@ -959,9 +959,8 @@ static void aspeed_i2c_register_types(void)
type_init(aspeed_i2c_register_types)
I2CBus *aspeed_i2c_get_bus(DeviceState *dev, int busnr)
I2CBus *aspeed_i2c_get_bus(AspeedI2CState *s, int busnr)
{
AspeedI2CState *s = ASPEED_I2C(dev);
AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(s);
I2CBus *bus = NULL;

15
hw/i2c/core.c
View File

@ -267,26 +267,25 @@ const VMStateDescription vmstate_i2c_slave = {
}
};
DeviceState *i2c_try_create_slave(const char *name, uint8_t addr)
I2CSlave *i2c_slave_new(const char *name, uint8_t addr)
{
DeviceState *dev;
dev = qdev_new(name);
qdev_prop_set_uint8(dev, "address", addr);
return dev;
return I2C_SLAVE(dev);
}
bool i2c_realize_and_unref(DeviceState *dev, I2CBus *bus, Error **errp)
bool i2c_slave_realize_and_unref(I2CSlave *dev, I2CBus *bus, Error **errp)
{
return qdev_realize_and_unref(dev, &bus->qbus, errp);
return qdev_realize_and_unref(&dev->qdev, &bus->qbus, errp);
}
DeviceState *i2c_create_slave(I2CBus *bus, const char *name, uint8_t addr)
I2CSlave *i2c_slave_create_simple(I2CBus *bus, const char *name, uint8_t addr)
{
DeviceState *dev;
I2CSlave *dev = i2c_slave_new(name, addr);
dev = i2c_try_create_slave(name, addr);
i2c_realize_and_unref(dev, bus, &error_fatal);
i2c_slave_realize_and_unref(dev, bus, &error_abort);
return dev;
}

2
hw/ppc/e500.c
View File

@ -941,7 +941,7 @@ void ppce500_init(MachineState *machine)
memory_region_add_subregion(ccsr_addr_space, MPC8544_I2C_REGS_OFFSET,
sysbus_mmio_get_region(s, 0));
i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
i2c_create_slave(i2c, "ds1338", RTC_REGS_OFFSET);
i2c_slave_create_simple(i2c, "ds1338", RTC_REGS_OFFSET);
/* General Utility device */

2
hw/ppc/sam460ex.c
View File

@ -339,7 +339,7 @@ static void sam460ex_init(MachineState *machine)
spd_data[20] = 4; /* SO-DIMM module */
smbus_eeprom_init_one(i2c, 0x50, spd_data);
/* RTC */
i2c_create_slave(i2c, "m41t80", 0x68);
i2c_slave_create_simple(i2c, "m41t80", 0x68);
dev = sysbus_create_simple(TYPE_PPC4xx_I2C, 0x4ef600800, uic[0][3]);

2
include/hw/i2c/aspeed_i2c.h
View File

@ -93,6 +93,6 @@ typedef struct AspeedI2CClass {
} AspeedI2CClass;
I2CBus *aspeed_i2c_get_bus(DeviceState *dev, int busnr);
I2CBus *aspeed_i2c_get_bus(AspeedI2CState *s, int busnr);
#endif /* ASPEED_I2C_H */

54
include/hw/i2c/i2c.h
View File

@ -79,9 +79,57 @@ int i2c_send_recv(I2CBus *bus, uint8_t *data, bool send);
int i2c_send(I2CBus *bus, uint8_t data);
uint8_t i2c_recv(I2CBus *bus);
DeviceState *i2c_create_slave(I2CBus *bus, const char *name, uint8_t addr);
DeviceState *i2c_try_create_slave(const char *name, uint8_t addr);
bool i2c_realize_and_unref(DeviceState *dev, I2CBus *bus, Error **errp);
/**
* Create an I2C slave device on the heap.
* @name: a device type name
* @addr: I2C address of the slave when put on a bus
*
* This only initializes the device state structure and allows
* properties to be set. Type @name must exist. The device still
* needs to be realized. See qdev-core.h.
*/
I2CSlave *i2c_slave_new(const char *name, uint8_t addr);
/**
* Create and realize an I2C slave device on the heap.
* @bus: I2C bus to put it on
* @name: I2C slave device type name
* @addr: I2C address of the slave when put on a bus
*
* Create the device state structure, initialize it, put it on the
* specified @bus, and drop the reference to it (the device is realized).
*/
I2CSlave *i2c_slave_create_simple(I2CBus *bus, const char *name, uint8_t addr);
/**
* Realize and and drop a reference an I2C slave device
* @dev: I2C slave device to realize
* @bus: I2C bus to put it on
* @addr: I2C address of the slave on the bus
* @errp: pointer to NULL initialized error object
*
* Returns: %true on success, %false on failure.
*
* Call 'realize' on @dev, put it on the specified @bus, and drop the
* reference to it.
*
* This function is useful if you have created @dev via qdev_new(),
* i2c_slave_new() or i2c_slave_try_new() (which take a reference to
* the device it returns to you), so that you can set properties on it
* before realizing it. If you don't need to set properties then
* i2c_slave_create_simple() is probably better (as it does the create,
* init and realize in one step).
*
* If you are embedding the I2C slave into another QOM device and
* initialized it via some variant on object_initialize_child() then
* do not use this function, because that family of functions arrange
* for the only reference to the child device to be held by the parent
* via the child<> property, and so the reference-count-drop done here
* would be incorrect. (Instead you would want i2c_slave_realize(),
* which doesn't currently exist but would be trivial to create if we
* had any code that wanted it.)
*/
bool i2c_slave_realize_and_unref(I2CSlave *dev, I2CBus *bus, Error **errp);
/* lm832x.c */
void lm832x_key_event(DeviceState *dev, int key, int state);