[PATCH v4 18/27] drm/bridge: ti-sn65dsi86: Code motion of refclk management functions

Douglas Anderson
2021-04-16T22:42:04Z

No functional changes--this just makes the diffstat of a future change
easier to understand.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

(no changes since v1)

drivers/gpu/drm/bridge/ti-sn65dsi86.c | 116 +++++++++++++-------------
1 file changed, 58 insertions(+), 58 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index a98abf496190..b3c699da7724 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/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);
@@ -459,64 +517,6 @@ 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;
--
2.31.1.368.gbe11c130af-goog