rockchip: otp: Add dump_otp debug command

Add a simple debug command to dump the content of the otp.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

diff --git a/drivers/misc/rockchip-otp.c b/drivers/misc/rockchip-otp.c
index 3da99e83179bd2ca8d64f342f3d490d2a9a73241..c19cd5ce625e71bbdbab4ad1fe5202d2b20510f1 100644 (file)
--- a/drivers/misc/rockchip-otp.c
+++ b/drivers/misc/rockchip-otp.c
@@ -5,6 +5,8 @@
 
 #include <common.h>
 #include <asm/io.h>
+#include <command.h>
+#include <display_options.h>
 #include <dm.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
@@ -70,6 +72,39 @@ struct rockchip_otp_data {
        int block_size;
 };
 
+#if defined(DEBUG)
+static int dump_otp(struct cmd_tbl *cmdtp, int flag,
+                   int argc, char *const argv[])
+{
+       struct udevice *dev;
+       u8 data[4];
+       int ret, i;
+
+       ret = uclass_get_device_by_driver(UCLASS_MISC,
+                                         DM_DRIVER_GET(rockchip_otp), &dev);
+       if (ret) {
+               printf("%s: no misc-device found\n", __func__);
+               return 0;
+       }
+
+       for (i = 0; true; i += sizeof(data)) {
+               ret = misc_read(dev, i, &data, sizeof(data));
+               if (ret < 0)
+                       return 0;
+
+               print_buffer(i, data, 1, sizeof(data), sizeof(data));
+       }
+
+       return 0;
+}
+
+U_BOOT_CMD(
+       dump_otp, 1, 1, dump_otp,
+       "Dump the content of the otp",
+       ""
+);
+#endif
+
 static int rockchip_otp_poll_timeout(struct rockchip_otp_plat *otp,
                                     u32 flag, u32 reg)
 {