nvmem: core: Allow specifying device name verbatim

Add code to allow avoid having nvmem core append a numeric suffix to
the end of the name by passing config->id of -1.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 35a3dbe..99e04cf 100644 (file)
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -473,9 +473,14 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
        nvmem->reg_read = config->reg_read;
        nvmem->reg_write = config->reg_write;
        nvmem->dev.of_node = config->dev->of_node;
-       dev_set_name(&nvmem->dev, "%s%d",
-                    config->name ? : "nvmem",
-                    config->name ? config->id : nvmem->id);
+
+       if (config->id == -1 && config->name) {
+               dev_set_name(&nvmem->dev, "%s", config->name);
+       } else {
+               dev_set_name(&nvmem->dev, "%s%d",
+                            config->name ? : "nvmem",
+                            config->name ? config->id : nvmem->id);
+       }
 
        nvmem->read_only = device_property_present(config->dev, "read-only") |
                           config->read_only;

diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index a39f76f..b00567a 100644 (file)
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -43,6 +43,9 @@ typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
  * Note: A default "nvmem<id>" name will be assigned to the device if
  * no name is specified in its configuration. In such case "<id>" is
  * generated with ida_simple_get() and provided id field is ignored.
+ *
+ * Note: Specifying name and setting id to -1 implies a unique device
+ * whose name is provided as-is (kept unaltered).
  */
 struct nvmem_config {
        struct device           *dev;