media: ccs-pll: Print relevant information on PLL tree

Print information on PLL tree configuration based on the flags. This also
adds support for printing dual PLL trees, and better separates between OP
and VT PLL trees.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 66 insertions, 19 deletions

diff --git a/drivers/media/i2c/ccs-pll.c b/drivers/media/i2c/ccs-pll.c
index e879c03a3d3b..43735f6d0bb2 100644
--- a/drivers/media/i2c/ccs-pll.c
+++ b/drivers/media/i2c/ccs-pll.c
@@ -56,28 +56,75 @@ static int bounds_check(struct device *dev, uint32_t val,
 	return -EINVAL;
 }
 
-static void print_pll(struct device *dev, struct ccs_pll *pll)
+#define PLL_OP 1
+#define PLL_VT 2
+
+static const char *pll_string(unsigned int which)
 {
-	dev_dbg(dev, "pre_pll_clk_div\t%u\n",  pll->vt_fr.pre_pll_clk_div);
-	dev_dbg(dev, "pll_multiplier \t%u\n",  pll->vt_fr.pll_multiplier);
-	if (!(pll->flags & CCS_PLL_FLAG_NO_OP_CLOCKS)) {
-		dev_dbg(dev, "op_sys_clk_div \t%u\n", pll->op_bk.sys_clk_div);
-		dev_dbg(dev, "op_pix_clk_div \t%u\n", pll->op_bk.pix_clk_div);
+	switch (which) {
+	case PLL_OP:
+		return "op";
+	case PLL_VT:
+		return "vt";
 	}
-	dev_dbg(dev, "vt_sys_clk_div \t%u\n",  pll->vt_bk.sys_clk_div);
-	dev_dbg(dev, "vt_pix_clk_div \t%u\n",  pll->vt_bk.pix_clk_div);
-
-	dev_dbg(dev, "ext_clk_freq_hz \t%u\n", pll->ext_clk_freq_hz);
-	dev_dbg(dev, "pll_ip_clk_freq_hz \t%u\n", pll->vt_fr.pll_ip_clk_freq_hz);
-	dev_dbg(dev, "pll_op_clk_freq_hz \t%u\n", pll->vt_fr.pll_op_clk_freq_hz);
-	if (!(pll->flags & CCS_PLL_FLAG_NO_OP_CLOCKS)) {
-		dev_dbg(dev, "op_sys_clk_freq_hz \t%u\n",
-			pll->op_bk.sys_clk_freq_hz);
-		dev_dbg(dev, "op_pix_clk_freq_hz \t%u\n",
-			pll->op_bk.pix_clk_freq_hz);
+
+	return NULL;
+}
+
+#define PLL_FL(f) CCS_PLL_FLAG_##f
+
+static void print_pll(struct device *dev, struct ccs_pll *pll)
+{
+	const struct {
+		struct ccs_pll_branch_fr *fr;
+		struct ccs_pll_branch_bk *bk;
+		unsigned int which;
+	} branches[] = {
+		{ &pll->vt_fr, &pll->vt_bk, PLL_VT },
+		{ NULL, &pll->op_bk, PLL_OP }
+	}, *br;
+	unsigned int i;
+
+	dev_dbg(dev, "ext_clk_freq_hz\t\t%u\n", pll->ext_clk_freq_hz);
+
+	for (i = 0, br = branches; i < ARRAY_SIZE(branches); i++, br++) {
+		const char *s = pll_string(br->which);
+
+		if (br->which == PLL_VT) {
+			dev_dbg(dev, "%s_pre_pll_clk_div\t\t%u\n",  s,
+				br->fr->pre_pll_clk_div);
+			dev_dbg(dev, "%s_pll_multiplier\t\t%u\n",  s,
+				br->fr->pll_multiplier);
+
+			dev_dbg(dev, "%s_pll_ip_clk_freq_hz\t%u\n", s,
+				br->fr->pll_ip_clk_freq_hz);
+			dev_dbg(dev, "%s_pll_op_clk_freq_hz\t%u\n", s,
+				br->fr->pll_op_clk_freq_hz);
+		}
+
+		if (!(pll->flags & CCS_PLL_FLAG_NO_OP_CLOCKS) ||
+		    br->which == PLL_VT) {
+			dev_dbg(dev, "%s_sys_clk_div\t\t%u\n",  s,
+				br->bk->sys_clk_div);
+			dev_dbg(dev, "%s_pix_clk_div\t\t%u\n", s,
+				br->bk->pix_clk_div);
+
+			dev_dbg(dev, "%s_sys_clk_freq_hz\t%u\n", s,
+				br->bk->sys_clk_freq_hz);
+			dev_dbg(dev, "%s_pix_clk_freq_hz\t%u\n", s,
+				br->bk->pix_clk_freq_hz);
+		}
 	}
-	dev_dbg(dev, "vt_sys_clk_freq_hz \t%u\n", pll->vt_bk.sys_clk_freq_hz);
-	dev_dbg(dev, "vt_pix_clk_freq_hz \t%u\n", pll->vt_bk.pix_clk_freq_hz);
+
+	dev_dbg(dev, "flags%s%s%s%s%s%s\n",
+		pll->flags & PLL_FL(LANE_SPEED_MODEL) ? " lane-speed" : "",
+		pll->flags & PLL_FL(LINK_DECOUPLED) ? " link-decoupled" : "",
+		pll->flags & PLL_FL(EXT_IP_PLL_DIVIDER) ?
+		" ext-ip-pll-divider" : "",
+		pll->flags & PLL_FL(FLEXIBLE_OP_PIX_CLK_DIV) ?
+		" flexible-op-pix-div" : "",
+		pll->flags & PLL_FL(FIFO_DERATING) ? " fifo-derating" : "",
+		pll->flags & PLL_FL(FIFO_OVERRATING) ? " fifo-overrating" : "");
 }
 
 static int check_all_bounds(struct device *dev,