media: ccs-pll: Make VT divisors 16-bit

Make VT divisors 16-bit unsigned numbers. They don't need 32 bits after
all.

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

1 files changed, 25 insertions, 26 deletions

diff --git a/drivers/media/i2c/ccs-pll.c b/drivers/media/i2c/ccs-pll.c
index a6443589b948..7512f0313010 100644
--- a/drivers/media/i2c/ccs-pll.c
+++ b/drivers/media/i2c/ccs-pll.c
@@ -239,11 +239,11 @@ ccs_pll_calculate_vt(struct device *dev, const struct ccs_pll_limits *lim,
 		     struct ccs_pll_branch_bk *op_pll_bk, bool cphy,
 		     uint32_t phy_const)
 {
-	uint32_t sys_div;
-	uint32_t best_pix_div = INT_MAX >> 1;
-	uint32_t vt_op_binning_div;
-	uint32_t min_vt_div, max_vt_div, vt_div;
-	uint32_t min_sys_div, max_sys_div;
+	uint16_t sys_div;
+	uint16_t best_pix_div = SHRT_MAX >> 1;
+	uint16_t vt_op_binning_div;
+	uint16_t min_vt_div, max_vt_div, vt_div;
+	uint16_t min_sys_div, max_sys_div;
 
 	if (pll->flags & CCS_PLL_FLAG_NO_OP_CLOCKS)
 		goto out_calc_pixel_rate;
@@ -297,20 +297,19 @@ ccs_pll_calculate_vt(struct device *dev, const struct ccs_pll_limits *lim,
 
 	/* Find smallest and biggest allowed vt divisor. */
 	dev_dbg(dev, "min_vt_div: %u\n", min_vt_div);
-	min_vt_div = max(min_vt_div,
-			 DIV_ROUND_UP(pll_fr->pll_op_clk_freq_hz,
-				      lim->vt_bk.max_pix_clk_freq_hz));
+	min_vt_div = max_t(uint16_t, min_vt_div,
+			   DIV_ROUND_UP(pll_fr->pll_op_clk_freq_hz,
+					lim->vt_bk.max_pix_clk_freq_hz));
 	dev_dbg(dev, "min_vt_div: max_vt_pix_clk_freq_hz: %u\n",
 		min_vt_div);
-	min_vt_div = max_t(uint32_t, min_vt_div,
-			   lim->vt_bk.min_pix_clk_div
-			   * lim->vt_bk.min_sys_clk_div);
+	min_vt_div = max_t(uint16_t, min_vt_div, lim->vt_bk.min_pix_clk_div
+						 * lim->vt_bk.min_sys_clk_div);
 	dev_dbg(dev, "min_vt_div: min_vt_clk_div: %u\n", min_vt_div);
 
 	max_vt_div = lim->vt_bk.max_sys_clk_div * lim->vt_bk.max_pix_clk_div;
 	dev_dbg(dev, "max_vt_div: %u\n", max_vt_div);
-	max_vt_div = min(max_vt_div,
-			 DIV_ROUND_UP(pll_fr->pll_op_clk_freq_hz,
+	max_vt_div = min_t(uint16_t, max_vt_div,
+			   DIV_ROUND_UP(pll_fr->pll_op_clk_freq_hz,
 				      lim->vt_bk.min_pix_clk_freq_hz));
 	dev_dbg(dev, "max_vt_div: min_vt_pix_clk_freq_hz: %u\n",
 		max_vt_div);
@@ -321,26 +320,26 @@ ccs_pll_calculate_vt(struct device *dev, const struct ccs_pll_limits *lim,
 	 */
 	min_sys_div = lim->vt_bk.min_sys_clk_div;
 	dev_dbg(dev, "min_sys_div: %u\n", min_sys_div);
-	min_sys_div = max(min_sys_div,
-			  DIV_ROUND_UP(min_vt_div,
-				       lim->vt_bk.max_pix_clk_div));
+	min_sys_div = max_t(uint16_t, min_sys_div,
+			    DIV_ROUND_UP(min_vt_div,
+					 lim->vt_bk.max_pix_clk_div));
 	dev_dbg(dev, "min_sys_div: max_vt_pix_clk_div: %u\n", min_sys_div);
-	min_sys_div = max(min_sys_div,
-			  pll_fr->pll_op_clk_freq_hz
-			  / lim->vt_bk.max_sys_clk_freq_hz);
+	min_sys_div = max_t(uint16_t, min_sys_div,
+			    pll_fr->pll_op_clk_freq_hz
+			    / lim->vt_bk.max_sys_clk_freq_hz);
 	dev_dbg(dev, "min_sys_div: max_pll_op_clk_freq_hz: %u\n", min_sys_div);
 	min_sys_div = clk_div_even_up(min_sys_div);
 	dev_dbg(dev, "min_sys_div: one or even: %u\n", min_sys_div);
 
 	max_sys_div = lim->vt_bk.max_sys_clk_div;
 	dev_dbg(dev, "max_sys_div: %u\n", max_sys_div);
-	max_sys_div = min(max_sys_div,
-			  DIV_ROUND_UP(max_vt_div,
-				       lim->vt_bk.min_pix_clk_div));
+	max_sys_div = min_t(uint16_t, max_sys_div,
+			    DIV_ROUND_UP(max_vt_div,
+					 lim->vt_bk.min_pix_clk_div));
 	dev_dbg(dev, "max_sys_div: min_vt_pix_clk_div: %u\n", max_sys_div);
-	max_sys_div = min(max_sys_div,
-			  DIV_ROUND_UP(pll_fr->pll_op_clk_freq_hz,
-				       lim->vt_bk.min_pix_clk_freq_hz));
+	max_sys_div = min_t(uint16_t, max_sys_div,
+			    DIV_ROUND_UP(pll_fr->pll_op_clk_freq_hz,
+					 lim->vt_bk.min_pix_clk_freq_hz));
 	dev_dbg(dev, "max_sys_div: min_vt_pix_clk_freq_hz: %u\n", max_sys_div);
 
 	/*
@@ -376,7 +375,7 @@ ccs_pll_calculate_vt(struct device *dev, const struct ccs_pll_limits *lim,
 			if (vt_div == rounded_div)
 				break;
 		}
-		if (best_pix_div < INT_MAX >> 1)
+		if (best_pix_div < SHRT_MAX >> 1)
 			break;
 	}