[PATCH v2 04/11] clk: k210: Implement soc_clk_dump

[Sean Anderson]

Since we are no longer using CCF we cannot use the default soc_clk_dump.
Instead, implement our own.

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
---

(no changes since v1)

 drivers/clk/kendryte/clk.c | 68 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 66 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/kendryte/clk.c b/drivers/clk/kendryte/clk.c
index de9db84361..203d5f741c 100644
--- a/drivers/clk/kendryte/clk.c
+++ b/drivers/clk/kendryte/clk.c
@@ -925,14 +925,19 @@ static void k210_pll_waitfor_lock(struct k210_clk_priv *priv, int id)
 	}
 }
 
+static bool k210_pll_enabled(u32 reg)
+{
+	return (reg & K210_PLL_PWRD) && (reg & K210_PLL_EN) &&
+		!(reg & K210_PLL_RESET);
+}
+
 /* Adapted from sysctl_pll_enable */
 static int k210_pll_enable(struct k210_clk_priv *priv, int id)
 {
 	const struct k210_pll_params *pll = &k210_plls[id];
 	u32 reg = readl(priv->base + pll->off);
 
-	if ((reg & K210_PLL_PWRD) && (reg & K210_PLL_EN) &&
-	    !(reg & K210_PLL_RESET))
+	if (k210_pll_enabled(reg))
 		return 0;
 
 	reg |= K210_PLL_PWRD;
@@ -1174,3 +1179,62 @@ U_BOOT_DRIVER(k210_clk) = {
 	.probe = k210_clk_probe,
 	.priv_auto = sizeof(struct k210_clk_priv),
 };
+
+#if CONFIG_IS_ENABLED(CMD_CLK)
+static char show_enabled(struct k210_clk_priv *priv, int id)
+{
+	bool enabled;
+
+	if (k210_clks[id].flags & K210_CLKF_PLL) {
+		const struct k210_pll_params *pll =
+			&k210_plls[k210_clks[id].pll];
+
+		enabled = k210_pll_enabled(readl(priv->base + pll->off));
+	} else if (k210_clks[id].gate == K210_CLK_GATE_NONE) {
+		return '-';
+	} else {
+		const struct k210_gate_params *gate =
+			&k210_gates[k210_clks[id].gate];
+
+		enabled = k210_clk_readl(priv, gate->off, gate->bit_idx, 1);
+	}
+
+	return enabled ? 'y' : 'n';
+}
+
+static void show_clks(struct k210_clk_priv *priv, int id, int depth)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(k210_clks); i++) {
+		if (k210_clk_get_parent(priv, i) != id)
+			continue;
+
+		printf(" %-9lu %-7c %*s%s\n", do_k210_clk_get_rate(priv, i),
+		       show_enabled(priv, i), depth * 4, "",
+		       k210_clks[i].name);
+
+		show_clks(priv, i, depth + 1);
+	}
+}
+
+int soc_clk_dump(void)
+{
+	int ret;
+	struct udevice *dev;
+	struct k210_clk_priv *priv;
+
+	ret = uclass_get_device_by_driver(UCLASS_CLK, DM_DRIVER_GET(k210_clk),
+					  &dev);
+	if (ret)
+		return ret;
+	priv = dev_get_priv(dev);
+
+	puts(" Rate      Enabled Name\n");
+	puts("------------------------\n");
+	printf(" %-9lu %-7c %*s%s\n", clk_get_rate(&priv->in0), 'y', 0, "",
+	       priv->in0.dev->name);
+	show_clks(priv, K210_CLK_IN0, 1);
+	return 0;
+}
+#endif
-- 
2.31.0