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>
diff --git a/drivers/i2c/i2c-emul-uclass.c b/drivers/i2c/i2c-emul-uclass.c
index 9ef4651..7917b63 100644
--- a/drivers/i2c/i2c-emul-uclass.c
+++ b/drivers/i2c/i2c-emul-uclass.c
@@ -31,14 +31,27 @@
return uc_plat->dev;
}
+void i2c_emul_set_idx(struct udevice *dev, int emul_idx)
+{
+ struct dm_i2c_chip *plat = dev_get_parent_plat(dev);
+
+ plat->emul_idx = emul_idx;
+}
+
int i2c_emul_find(struct udevice *dev, struct udevice **emulp)
{
struct i2c_emul_uc_plat *uc_plat;
struct udevice *emul;
int ret;
- ret = uclass_find_device_by_phandle(UCLASS_I2C_EMUL, dev,
- "sandbox,emul", &emul);
+ if (!CONFIG_IS_ENABLED(OF_PLATDATA)) {
+ ret = uclass_find_device_by_phandle(UCLASS_I2C_EMUL, dev,
+ "sandbox,emul", &emul);
+ } else {
+ struct dm_i2c_chip *plat = dev_get_parent_plat(dev);
+
+ ret = device_get_by_ofplat_idx(plat->emul_idx, &emul);
+ }
if (ret) {
log_err("No emulators for device '%s'\n", dev->name);
return ret;
diff --git a/drivers/rtc/sandbox_rtc.c b/drivers/rtc/sandbox_rtc.c
index d0864b1..657e5c7 100644
--- a/drivers/rtc/sandbox_rtc.c
+++ b/drivers/rtc/sandbox_rtc.c
@@ -79,6 +79,18 @@
};
#endif
+static int sandbox_rtc_bind(struct udevice *dev)
+{
+#if CONFIG_IS_ENABLED(PLATDATA)
+ struct sandbox_i2c_rtc_plat_data *plat = dev_get_plat(dev);
+
+ /* Set up the emul_idx for i2c_emul_find() */
+ i2c_emul_set_idx(dev, plat->dtplat.sandbox_emul->idx);
+#endif
+
+ return 0;
+}
+
static const struct rtc_ops sandbox_rtc_ops = {
.get = sandbox_rtc_get,
.set = sandbox_rtc_set,
@@ -97,5 +109,6 @@
.id = UCLASS_RTC,
.of_match = sandbox_rtc_ids,
.ops = &sandbox_rtc_ops,
+ .bind = sandbox_rtc_bind,
ACPI_OPS_PTR(&sandbox_rtc_acpi_ops)
};