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| author | Simon Glass <sjg@chromium.org> | 2015-04-20 12:37:15 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-05-05 20:58:19 -0600 |
| commit | 182bf92d19cf007c2d6b9a264107d6996ae9014f (patch) | |
| tree | d73c8abc54efc11cf05e39f891dd57560448c8d9 /drivers/i2c | |
| parent | ba3864f8037f58dd1f46cad3b76adc0a84bd33b3 (diff) | |
| download | u-boot-imx-182bf92d19cf007c2d6b9a264107d6996ae9014f.zip u-boot-imx-182bf92d19cf007c2d6b9a264107d6996ae9014f.tar.gz u-boot-imx-182bf92d19cf007c2d6b9a264107d6996ae9014f.tar.bz2 | |
dm: i2c: Add an explicit test mode to the sandbox I2C driver
At present this driver has a few test features. They are needed for running
the driver model unit tests but are confusing and unnecessary if using
sandbox at the command line. Add a flag to enable the test mode, and don't
enable it by default.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/sandbox_i2c.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/drivers/i2c/sandbox_i2c.c b/drivers/i2c/sandbox_i2c.c index 621caec..dd1c7e5 100644 --- a/drivers/i2c/sandbox_i2c.c +++ b/drivers/i2c/sandbox_i2c.c @@ -18,8 +18,8 @@ DECLARE_GLOBAL_DATA_PTR; -struct dm_sandbox_i2c_emul_priv { - struct udevice *emul; +struct sandbox_i2c_priv { + bool test_mode; }; static int get_emul(struct udevice *dev, struct udevice **devp, @@ -47,17 +47,25 @@ static int get_emul(struct udevice *dev, struct udevice **devp, 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 = 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, 1, &dev); @@ -68,15 +76,18 @@ 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)) { - debug("%s: Max speed exceeded\n", __func__); - 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 ? 400000 : 100000)) { + debug("%s: Max speed exceeded\n", __func__); + return -EINVAL; + } } + return ops->xfer(emul, msg, nmsgs); } @@ -94,4 +105,5 @@ U_BOOT_DRIVER(i2c_sandbox) = { .id = UCLASS_I2C, .of_match = sandbox_i2c_ids, .ops = &sandbox_i2c_ops, + .priv_auto_alloc_size = sizeof(struct sandbox_i2c_priv), }; |