OpenE2K
/
qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

hw/arm/mps2.c: Mark internal-only I2C buses as 'full' 

The various MPS2 boards implemented in mps2.c have multiple I2C
buses: a bus dedicated to the audio configuration, one for the LCD
touchscreen controller, and two which are connected to the external
Shield expansion connector.  Mark the buses which are used only for
board-internal devices as 'full' so that if the user creates i2c
devices on the commandline without specifying a bus name then they
will be connected to the I2C controller used for the Shield
connector, where guest software will expect them.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210903151435.22379-5-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-09-13 16:07:25 +01:00
parent 68e579515f
commit 28e987a7e7
1 changed files with 11 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
hw/arm/mps2.c
View File

@ -428,7 +428,17 @@ static void mps2_common_init(MachineState *machine)
0x40023000, /* Audio */
0x40029000, /* Shield0 */
0x4002a000}; /* Shield1 */
sysbus_create_simple(TYPE_ARM_SBCON_I2C, i2cbase[i], NULL);
DeviceState *dev;
dev = sysbus_create_simple(TYPE_ARM_SBCON_I2C, i2cbase[i], NULL);
if (i < 2) {
/*
* internal-only bus: mark it full to avoid user-created
* i2c devices being plugged into it.
*/
BusState *qbus = qdev_get_child_bus(dev, "i2c");
qbus_mark_full(qbus);
}
}
create_unimplemented_device("i2s", 0x40024000, 0x400);