drm/bridge: ti-sn65dsi86: Code motion of refclk management functions

No functional changes--this just makes the diffstat of a future change
easier to understand.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210423095743.v5.12.I047b8c7c6a3fc60eaca473da7a374f171fb021c2@changeid

drivers/gpu/drm/bridge/ti-sn65dsi86.c

@@ -192,6 +192,64 @@ static void ti_sn65dsi86_write_u16(struct ti_sn65dsi86 *pdata,
 	regmap_write(pdata->regmap, reg + 1, val >> 8);
 }
 
+static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata)
+{
+	u32 bit_rate_khz, clk_freq_khz;
+	struct drm_display_mode *mode =
+		&pdata->bridge.encoder->crtc->state->adjusted_mode;
+
+	bit_rate_khz = mode->clock *
+			mipi_dsi_pixel_format_to_bpp(pdata->dsi->format);
+	clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2);
+
+	return clk_freq_khz;
+}
+
+/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */
+static const u32 ti_sn_bridge_refclk_lut[] = {
+	12000000,
+	19200000,
+	26000000,
+	27000000,
+	38400000,
+};
+
+/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */
+static const u32 ti_sn_bridge_dsiclk_lut[] = {
+	468000000,
+	384000000,
+	416000000,
+	486000000,
+	460800000,
+};
+
+static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata)
+{
+	int i;
+	u32 refclk_rate;
+	const u32 *refclk_lut;
+	size_t refclk_lut_size;
+
+	if (pdata->refclk) {
+		refclk_rate = clk_get_rate(pdata->refclk);
+		refclk_lut = ti_sn_bridge_refclk_lut;
+		refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut);
+		clk_prepare_enable(pdata->refclk);
+	} else {
+		refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000;
+		refclk_lut = ti_sn_bridge_dsiclk_lut;
+		refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut);
+	}
+
+	/* for i equals to refclk_lut_size means default frequency */
+	for (i = 0; i < refclk_lut_size; i++)
+		if (refclk_lut[i] == refclk_rate)
+			break;
+
+	regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK,
+			   REFCLK_FREQ(i));
+}
+
 static int __maybe_unused ti_sn65dsi86_resume(struct device *dev)
 {
 	struct ti_sn65dsi86 *pdata = dev_get_drvdata(dev);
@@ -461,64 +519,6 @@ static void ti_sn_bridge_disable(struct drm_bridge *bridge)
 	regmap_write(pdata->regmap, SN_PLL_ENABLE_REG, 0);
 }
 
-static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata)
-{
-	u32 bit_rate_khz, clk_freq_khz;
-	struct drm_display_mode *mode =
-		&pdata->bridge.encoder->crtc->state->adjusted_mode;
-
-	bit_rate_khz = mode->clock *
-			mipi_dsi_pixel_format_to_bpp(pdata->dsi->format);
-	clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2);
-
-	return clk_freq_khz;
-}
-
-/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */
-static const u32 ti_sn_bridge_refclk_lut[] = {
-	12000000,
-	19200000,
-	26000000,
-	27000000,
-	38400000,
-};
-
-/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */
-static const u32 ti_sn_bridge_dsiclk_lut[] = {
-	468000000,
-	384000000,
-	416000000,
-	486000000,
-	460800000,
-};
-
-static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata)
-{
-	int i;
-	u32 refclk_rate;
-	const u32 *refclk_lut;
-	size_t refclk_lut_size;
-
-	if (pdata->refclk) {
-		refclk_rate = clk_get_rate(pdata->refclk);
-		refclk_lut = ti_sn_bridge_refclk_lut;
-		refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut);
-		clk_prepare_enable(pdata->refclk);
-	} else {
-		refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000;
-		refclk_lut = ti_sn_bridge_dsiclk_lut;
-		refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut);
-	}
-
-	/* for i equals to refclk_lut_size means default frequency */
-	for (i = 0; i < refclk_lut_size; i++)
-		if (refclk_lut[i] == refclk_rate)
-			break;
-
-	regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK,
-			   REFCLK_FREQ(i));
-}
-
 static void ti_sn_bridge_set_dsi_rate(struct ti_sn65dsi86 *pdata)
 {
 	unsigned int bit_rate_mhz, clk_freq_mhz;