usb: dwc3: add a SPL_USB_DWC3_GENERIC option for the dwc3 driver

[platform/kernel/u-boot.git] / drivers / i2c / sandbox_i2c.c

diff --git a/drivers/i2c/sandbox_i2c.c b/drivers/i2c/sandbox_i2c.c
index f0e9f51..c99e6de 100644 (file)
--- a/drivers/i2c/sandbox_i2c.c
+++ b/drivers/i2c/sandbox_i2c.c
@@ -1,66 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Simulate an I2C port
  *
  * Copyright (c) 2014 Google, Inc
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
-#include <fdtdec.h>
 #include <i2c.h>
+#include <log.h>
+#include <asm/i2c.h>
 #include <asm/test.h>
+#include <dm/acpi.h>
 #include <dm/lists.h>
 #include <dm/device-internal.h>
-#include <dm/root.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-struct dm_sandbox_i2c_emul_priv {
-       struct udevice *emul;
-};
 
 static int get_emul(struct udevice *dev, struct udevice **devp,
                    struct dm_i2c_ops **opsp)
 {
-       struct dm_i2c_chip *priv;
+       struct dm_i2c_chip *plat;
        int ret;
 
        *devp = NULL;
        *opsp = NULL;
-       priv = dev_get_parentdata(dev);
-       if (!priv->emul) {
-               ret = dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset,
-                                      false);
-               if (ret)
-                       return ret;
-
-               ret = device_get_child(dev, 0, &priv->emul);
+       plat = dev_get_parent_plat(dev);
+       if (!plat->emul) {
+               ret = i2c_emul_find(dev, &plat->emul);
                if (ret)
                        return ret;
        }
-       *devp = priv->emul;
-       *opsp = i2c_get_ops(priv->emul);
+       *devp = plat->emul;
+       *opsp = i2c_get_ops(plat->emul);
 
        return 0;
 }
 
+void sandbox_i2c_set_test_mode(struct udevice *bus, bool test_mode)
+{
+       struct sandbox_i2c_priv *priv = dev_get_priv(bus);
+
+       priv->test_mode = test_mode;
+}
+
 static int sandbox_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
                            int nmsgs)
 {
-       struct dm_i2c_bus *i2c = bus->uclass_priv;
+       struct dm_i2c_bus *i2c = dev_get_uclass_priv(bus);
+       struct sandbox_i2c_priv *priv = dev_get_priv(bus);
        struct dm_i2c_ops *ops;
        struct udevice *emul, *dev;
        bool is_read;
        int ret;
 
        /* Special test code to return success but with no emulation */
-       if (msg->addr == SANDBOX_I2C_TEST_ADDR)
+       if (priv->test_mode && msg->addr == SANDBOX_I2C_TEST_ADDR)
                return 0;
 
-       ret = i2c_get_chip(bus, msg->addr, &dev);
+       ret = i2c_get_chip(bus, msg->addr, 1, &dev);
        if (ret)
                return ret;
 
@@ -68,13 +65,19 @@ static int sandbox_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
        if (ret)
                return ret;
 
-       /*
-        * For testing, don't allow writing above 100KHz for writes and
-        * 400KHz for reads
-        */
-       is_read = nmsgs > 1;
-       if (i2c->speed_hz > (is_read ? 400000 : 100000))
-               return -EINVAL;
+       if (priv->test_mode) {
+               /*
+               * For testing, don't allow writing above 100KHz for writes and
+               * 400KHz for reads.
+               */
+               is_read = nmsgs > 1;
+               if (i2c->speed_hz > (is_read ? I2C_SPEED_FAST_RATE :
+                               I2C_SPEED_STANDARD_RATE)) {
+                       debug("%s: Max speed exceeded\n", __func__);
+                       return -EINVAL;
+               }
+       }
+
        return ops->xfer(emul, msg, nmsgs);
 }
 
@@ -82,30 +85,15 @@ static const struct dm_i2c_ops sandbox_i2c_ops = {
        .xfer           = sandbox_i2c_xfer,
 };
 
-static int sandbox_i2c_child_pre_probe(struct udevice *dev)
-{
-       struct dm_i2c_chip *i2c_chip = dev_get_parentdata(dev);
-
-       /* Ignore our test address */
-       if (i2c_chip->chip_addr == SANDBOX_I2C_TEST_ADDR)
-               return 0;
-       if (dev->of_offset == -1)
-               return 0;
-
-       return i2c_chip_ofdata_to_platdata(gd->fdt_blob, dev->of_offset,
-                                          i2c_chip);
-}
-
 static const struct udevice_id sandbox_i2c_ids[] = {
        { .compatible = "sandbox,i2c" },
        { }
 };
 
-U_BOOT_DRIVER(i2c_sandbox) = {
-       .name   = "i2c_sandbox",
+U_BOOT_DRIVER(sandbox_i2c) = {
+       .name   = "sandbox_i2c",
        .id     = UCLASS_I2C,
        .of_match = sandbox_i2c_ids,
-       .per_child_auto_alloc_size = sizeof(struct dm_i2c_chip),
-       .child_pre_probe = sandbox_i2c_child_pre_probe,
        .ops    = &sandbox_i2c_ops,
+       .priv_auto      = sizeof(struct sandbox_i2c_priv),
 };