To prepare for a rework of the LVDS disable code, which will need to be
called from rcar_lvds_pclk_disable(), move the LVDS enable code,
currently stored in the __rcar_lvds_atomic_enable() function, to a
separate code section separate from bridge operations. It will be then
extended with the LVDS disable code.
As part of this rework the __rcar_lvds_atomic_enable() function is
renamed to rcar_lvds_enable() to more clearly indicate its purpose.
No functional change intended.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_lvds.c | 97 +++++++++++++++--------------
1 file changed, 50 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index 61de18af62e6..70cdd5ec64d5 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -311,46 +311,7 @@ static void rcar_lvds_pll_setup_d3_e3(struct rcar_lvds *lvds, unsigned int freq)
}
/* -----------------------------------------------------------------------------
- * Clock - D3/E3 only
- */
-
-int rcar_lvds_pclk_enable(struct drm_bridge *bridge, unsigned long freq)
-{
- struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
- int ret;
-
- if (WARN_ON(!(lvds->info->quirks & RCAR_LVDS_QUIRK_EXT_PLL)))
- return -ENODEV;
-
- dev_dbg(lvds->dev, "enabling LVDS PLL, freq=%luHz\n", freq);
-
- ret = pm_runtime_resume_and_get(lvds->dev);
- if (ret)
- return ret;
-
- __rcar_lvds_pll_setup_d3_e3(lvds, freq, true);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rcar_lvds_pclk_enable);
-
-void rcar_lvds_pclk_disable(struct drm_bridge *bridge)
-{
- struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
-
- if (WARN_ON(!(lvds->info->quirks & RCAR_LVDS_QUIRK_EXT_PLL)))
- return;
-
- dev_dbg(lvds->dev, "disabling LVDS PLL\n");
-
- rcar_lvds_write(lvds, LVDPLLCR, 0);
-
- pm_runtime_put_sync(lvds->dev);
-}
-EXPORT_SYMBOL_GPL(rcar_lvds_pclk_disable);
-
-/* -----------------------------------------------------------------------------
- * Bridge
+ * Enable/disable
*/
static enum rcar_lvds_mode rcar_lvds_get_lvds_mode(struct rcar_lvds *lvds,
@@ -394,10 +355,10 @@ static enum rcar_lvds_mode rcar_lvds_get_lvds_mode(struct rcar_lvds *lvds,
return mode;
}
-static void __rcar_lvds_atomic_enable(struct drm_bridge *bridge,
- struct drm_atomic_state *state,
- struct drm_crtc *crtc,
- struct drm_connector *connector)
+static void rcar_lvds_enable(struct drm_bridge *bridge,
+ struct drm_atomic_state *state,
+ struct drm_crtc *crtc,
+ struct drm_connector *connector)
{
struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
u32 lvdhcr;
@@ -410,8 +371,7 @@ static void __rcar_lvds_atomic_enable(struct drm_bridge *bridge,
/* Enable the companion LVDS encoder in dual-link mode. */
if (lvds->link_type != RCAR_LVDS_SINGLE_LINK && lvds->companion)
- __rcar_lvds_atomic_enable(lvds->companion, state, crtc,
- connector);
+ rcar_lvds_enable(lvds->companion, state, crtc, connector);
/*
* Hardcode the channels and control signals routing for now.
@@ -531,6 +491,49 @@ static void __rcar_lvds_atomic_enable(struct drm_bridge *bridge,
rcar_lvds_write(lvds, LVDCR0, lvdcr0);
}
+/* -----------------------------------------------------------------------------
+ * Clock - D3/E3 only
+ */
+
+int rcar_lvds_pclk_enable(struct drm_bridge *bridge, unsigned long freq)
+{
+ struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
+ int ret;
+
+ if (WARN_ON(!(lvds->info->quirks & RCAR_LVDS_QUIRK_EXT_PLL)))
+ return -ENODEV;
+
+ dev_dbg(lvds->dev, "enabling LVDS PLL, freq=%luHz\n", freq);
+
+ ret = pm_runtime_resume_and_get(lvds->dev);
+ if (ret)
+ return ret;
+
+ __rcar_lvds_pll_setup_d3_e3(lvds, freq, true);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rcar_lvds_pclk_enable);
+
+void rcar_lvds_pclk_disable(struct drm_bridge *bridge)
+{
+ struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge);
+
+ if (WARN_ON(!(lvds->info->quirks & RCAR_LVDS_QUIRK_EXT_PLL)))
+ return;
+
+ dev_dbg(lvds->dev, "disabling LVDS PLL\n");
+
+ rcar_lvds_write(lvds, LVDPLLCR, 0);
+
+ pm_runtime_put_sync(lvds->dev);
+}
+EXPORT_SYMBOL_GPL(rcar_lvds_pclk_disable);
+
+/* -----------------------------------------------------------------------------
+ * Bridge
+ */
+
static void rcar_lvds_atomic_enable(struct drm_bridge *bridge,
struct drm_bridge_state *old_bridge_state)
{
@@ -542,7 +545,7 @@ static void rcar_lvds_atomic_enable(struct drm_bridge *bridge,
bridge->encoder);
crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
- __rcar_lvds_atomic_enable(bridge, state, crtc, connector);
+ rcar_lvds_enable(bridge, state, crtc, connector);
}
static void rcar_lvds_atomic_disable(struct drm_bridge *bridge,
--
Regards,
Laurent Pinchart
