diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-08-26 17:34:02 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-10-11 01:08:58 +0200 |
| commit | f112c1c557f908844ffcf2da8de867c2a8a96b9d (patch) | |
| tree | 05169734122088cf3684441433989e8ff6661c6a | |
| parent | 8f8a5a20b7475551bbd7d732e50ac3c9017dfb38 (diff) | |
i2c: tegra: Implement i2c_get_bus_num_fdt()
This is useful to retrieve the U-Boot bus number of an I2C controller
given a device tree node.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | drivers/i2c/tegra_i2c.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/i2c/tegra_i2c.c b/drivers/i2c/tegra_i2c.c index 257b72f0f7c..94453765369 100644 --- a/drivers/i2c/tegra_i2c.c +++ b/drivers/i2c/tegra_i2c.c @@ -21,6 +21,7 @@ DECLARE_GLOBAL_DATA_PTR; /* Information about i2c controller */ struct i2c_bus { + int node; int id; enum periph_id periph_id; int speed; @@ -400,6 +401,7 @@ static int process_nodes(const void *blob, int node_list[], int count, continue; i2c_bus = &i2c_controllers[i]; + i2c_bus->node = node; i2c_bus->id = i; if (i2c_get_config(blob, node, i2c_bus)) { @@ -624,6 +626,17 @@ int tegra_i2c_get_dvc_bus_num(void) return -1; } +int i2c_get_bus_num_fdt(int node) +{ + unsigned int i; + + for (i = 0; i < TEGRA_I2C_NUM_CONTROLLERS; i++) + if (node == i2c_controllers[i].node) + return i; + + return -1; +} + /* * Register soft i2c adapters */ |