diff options
Diffstat (limited to 'drivers/input/tegra-kbc.c')
| -rw-r--r-- | drivers/input/tegra-kbc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/input/tegra-kbc.c b/drivers/input/tegra-kbc.c index ab7a9e33e..88471d3ed 100644 --- a/drivers/input/tegra-kbc.c +++ b/drivers/input/tegra-kbc.c @@ -63,6 +63,7 @@ static struct keyb { struct kbc_tegra *kbc; /* tegra keyboard controller */ unsigned char inited; /* 1 if keyboard has been inited */ unsigned char first_scan; /* 1 if this is our first key scan */ + unsigned char created; /* 1 if driver has been created */ /* * After init we must wait a short time before polling the keyboard. @@ -306,6 +307,10 @@ static void tegra_kbc_open(void) */ static int init_tegra_keyboard(void) { + /* check if already created */ + if (config.created) + return 0; + #ifdef CONFIG_OF_CONTROL int node; @@ -349,6 +354,7 @@ static int init_tegra_keyboard(void) config_kbc_gpio(config.kbc); tegra_kbc_open(); + config.created = 1; debug("%s: Tegra keyboard ready\n", __func__); return 0; @@ -357,6 +363,8 @@ static int init_tegra_keyboard(void) int drv_keyboard_init(void) { struct stdio_dev dev; + char *stdinname = getenv("stdin"); + int error; if (input_init(&config.input, 0)) { debug("%s: Cannot set up input\n", __func__); @@ -372,5 +380,13 @@ int drv_keyboard_init(void) dev.start = init_tegra_keyboard; /* Register the device. init_tegra_keyboard() will be called soon */ - return input_stdio_register(&dev); + error = input_stdio_register(&dev); + if (error) + return error; +#ifdef CONFIG_CONSOLE_MUX + error = iomux_doenv(stdin, stdinname); + if (error) + return error; +#endif + return 0; } |