pxe: Return the file size from the getfile() function

[platform/kernel/u-boot.git] / cmd / clk.c

diff --git a/cmd/clk.c b/cmd/clk.c
index e3c3d2f..dbbdc31 100644 (file)
--- a/cmd/clk.c
+++ b/cmd/clk.c
@@ -18,11 +18,14 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
 {
        int i, is_last;
        struct udevice *child;
-       struct clk *clkp;
+       struct clk *clkp, *parent;
        u32 rate;
 
        clkp = dev_get_clk_ptr(dev);
        if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
+               parent = clk_get_parent(clkp);
+               if (!IS_ERR(parent) && depth == -1)
+                       return;
                depth++;
                rate = clk_get_rate(clkp);
 
@@ -47,6 +50,9 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
        }
 
        list_for_each_entry(child, &dev->child_head, sibling_node) {
+               if (child == dev)
+                       continue;
+
                is_last = list_is_last(&child->sibling_node, &dev->child_head);
                show_clks(child, depth, (last_flag << 1) | is_last);
        }
@@ -54,14 +60,19 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
 
 int __weak soc_clk_dump(void)
 {
-       struct udevice *root;
+       struct udevice *dev;
+       struct uclass *uc;
+       int ret;
 
-       root = dm_root();
-       if (root) {
-               printf(" Rate               Usecnt      Name\n");
-               printf("------------------------------------------\n");
-               show_clks(root, -1, 0);
-       }
+       ret = uclass_get(UCLASS_CLK, &uc);
+       if (ret)
+               return ret;
+
+       printf(" Rate               Usecnt      Name\n");
+       printf("------------------------------------------\n");
+
+       uclass_foreach_dev(dev, uc)
+               show_clks(dev, -1, 0);
 
        return 0;
 }
@@ -87,8 +98,56 @@ static int do_clk_dump(struct cmd_tbl *cmdtp, int flag, int argc,
        return ret;
 }
 
+#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK)
+struct udevice *clk_lookup(const char *name)
+{
+       int i = 0;
+       struct udevice *dev;
+
+       do {
+               uclass_get_device(UCLASS_CLK, i++, &dev);
+               if (!strcmp(name, dev->name))
+                       return dev;
+       } while (dev);
+
+       return NULL;
+}
+
+static int do_clk_setfreq(struct cmd_tbl *cmdtp, int flag, int argc,
+                         char *const argv[])
+{
+       struct clk *clk = NULL;
+       s32 freq;
+       struct udevice *dev;
+
+       freq = dectoul(argv[2], NULL);
+
+       dev = clk_lookup(argv[1]);
+
+       if (dev)
+               clk = dev_get_clk_ptr(dev);
+
+       if (!clk) {
+               printf("clock '%s' not found.\n", argv[1]);
+               return -EINVAL;
+       }
+
+       freq = clk_set_rate(clk, freq);
+       if (freq < 0) {
+               printf("set_rate failed: %d\n", freq);
+               return CMD_RET_FAILURE;
+       }
+
+       printf("set_rate returns %u\n", freq);
+       return 0;
+}
+#endif
+
 static struct cmd_tbl cmd_clk_sub[] = {
        U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""),
+#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK)
+       U_BOOT_CMD_MKENT(setfreq, 3, 1, do_clk_setfreq, "", ""),
+#endif
 };
 
 static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc,
@@ -113,7 +172,8 @@ static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc,
 
 #ifdef CONFIG_SYS_LONGHELP
 static char clk_help_text[] =
-       "dump - Print clock frequencies";
+       "dump - Print clock frequencies\n"
+       "setfreq [clk] [freq] - Set clock frequency";
 #endif
 
-U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text);
+U_BOOT_CMD(clk, 4, 1, do_clk, "CLK sub-system", clk_help_text);