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| author | Simon Glass <sjg@chromium.org> | 2021-03-15 17:25:30 +1300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2021-03-26 17:03:08 +1300 |
| commit | 728d04cc72855e23f6a9116e68911dcac5be4693 (patch) | |
| tree | e363c8a2c362a9d144fe80c75fafc0a731f0de96 /include/i2c.h | |
| parent | abaed70990bd8eb2c9992a16465f8a9daa4c5f61 (diff) | |
| download | u-boot-728d04cc72855e23f6a9116e68911dcac5be4693.tar.gz | |
sandbox: i2c: Support i2c emulation with of-platdata
At present the i2c emulators require access to the devicetree, which is
not possible (by design) with of-platdata.
Add a way for drivers to record the of-platdata index of their emulator,
so that we can still find the emulator.
This allows i2c emulation to work with of-platdata.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/i2c.h')
| -rw-r--r-- | include/i2c.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h index 7ae0c42706..c0fe94c1f3 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -93,6 +93,8 @@ struct udevice; * datasheet explains it's usage of this addressing * mode. * @emul: Emulator for this chip address (only used for emulation) + * @emul_idx: Emulator index, used for of-platdata and set by each i2c chip's + * bind() method. This allows i2c_emul_find() to work with of-platdata. */ struct dm_i2c_chip { uint chip_addr; @@ -102,6 +104,7 @@ struct dm_i2c_chip { #ifdef CONFIG_SANDBOX struct udevice *emul; bool test_mode; + int emul_idx; #endif }; @@ -555,6 +558,18 @@ void i2c_dump_msgs(struct i2c_msg *msg, int nmsgs); int i2c_emul_find(struct udevice *dev, struct udevice **emulp); /** + * i2c_emul_set_idx() - Set the emulator index for an i2c sandbox device + * + * With of-platdata we cannot find the emulator using the device tree, so rely + * on the bind() method of each i2c driver calling this function to tell us + * the of-platdata idx of the emulator + * + * @dev: i2c device to set the emulator for + * @emul_idx: of-platdata index for that emulator + */ +void i2c_emul_set_idx(struct udevice *dev, int emul_idx); + +/** * i2c_emul_get_device() - Find the device being emulated * * Given an emulator this returns the associated device |