siemens: add led cmd for flexible LED control
* remove setting LED in user button function.
We want to decouple reading user button and setting LED. This
two things need to be done independently.
* led cmd can be used to control LEDs that are defined in board file
having a led cmd, one can easily set LEDs in u-boot shell. For
example bootcmd can be extended to disable status LED before
loading kernel.
Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
diff --git a/board/siemens/common/board.c b/board/siemens/common/board.c
index 7e8731b..2782bcc 100644
--- a/board/siemens/common/board.c
+++ b/board/siemens/common/board.c
@@ -128,12 +128,6 @@
button = 0;
gpio_free(gpio);
- if (!button) {
- /* LED0 - RED=1: GPIO2_0 2*32 = 64 */
- gpio_request(BOARD_DFU_BUTTON_LED, "");
- gpio_direction_output(BOARD_DFU_BUTTON_LED, 1);
- gpio_set_value(BOARD_DFU_BUTTON_LED, 1);
- }
return button;
}
@@ -144,6 +138,46 @@
""
);
#endif
+/*
+ * This command sets led
+ * Input - name of led
+ * value of led
+ * Returns - 1 if input does not match
+ * 0 if led was set
+ */
+static int
+do_setled(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int gpio = 0;
+ if (argc != 3)
+ goto exit;
+#if defined(BOARD_STATUS_LED)
+ if (!strcmp(argv[1], "stat"))
+ gpio = BOARD_STATUS_LED;
+#endif
+#if defined(BOARD_DFU_BUTTON_LED)
+ if (!strcmp(argv[1], "dfu"))
+ gpio = BOARD_DFU_BUTTON_LED;
+#endif
+ /* If argument does not mach exit */
+ if (gpio == 0)
+ goto exit;
+ gpio_request(gpio, "");
+ gpio_direction_output(gpio, 1);
+ if (!strcmp(argv[2], "1"))
+ gpio_set_value(gpio, 1);
+ else
+ gpio_set_value(gpio, 0);
+ return 0;
+exit:
+ return 1;
+}
+
+U_BOOT_CMD(
+ led, CONFIG_SYS_MAXARGS, 2, do_setled,
+ "Set led on or off",
+ "dfu val - set dfu led\nled stat val - set status led"
+);
static int
do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])