drm/omap: dpi: Reorder functions in sections

Group functions based on their purpose and split them in sections to
make the source code easier to navigate.

No functional change is included.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-47-laurent.pinchart@ideasonboard.com

diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index f835427..dccf81e 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -48,6 +48,10 @@ static struct dpi_data *dpi_get_data_from_dssdev(struct omap_dss_device *dssdev)
        return container_of(dssdev, struct dpi_data, output);
 }
 
+/* -----------------------------------------------------------------------------
+ * Clock Handling and PLL
+ */
+
 static enum dss_clk_source dpi_get_clk_src_dra7xx(struct dpi_data *dpi,
                                                  enum omap_channel channel)
 {
@@ -366,6 +370,62 @@ static void dpi_config_lcd_manager(struct dpi_data *dpi)
        dss_mgr_set_lcd_config(&dpi->output, &dpi->mgr_config);
 }
 
+static int dpi_verify_pll(struct dss_pll *pll)
+{
+       int r;
+
+       /* do initial setup with the PLL to see if it is operational */
+
+       r = dss_pll_enable(pll);
+       if (r)
+               return r;
+
+       dss_pll_disable(pll);
+
+       return 0;
+}
+
+static void dpi_init_pll(struct dpi_data *dpi)
+{
+       struct dss_pll *pll;
+
+       if (dpi->pll)
+               return;
+
+       dpi->clk_src = dpi_get_clk_src(dpi);
+
+       pll = dss_pll_find_by_src(dpi->dss, dpi->clk_src);
+       if (!pll)
+               return;
+
+       if (dpi_verify_pll(pll)) {
+               DSSWARN("PLL not operational\n");
+               return;
+       }
+
+       dpi->pll = pll;
+}
+
+/* -----------------------------------------------------------------------------
+ * omap_dss_device Operations
+ */
+
+static int dpi_connect(struct omap_dss_device *src,
+                      struct omap_dss_device *dst)
+{
+       struct dpi_data *dpi = dpi_get_data_from_dssdev(dst);
+
+       dpi_init_pll(dpi);
+
+       return omapdss_device_connect(dst->dss, dst, dst->next);
+}
+
+static void dpi_disconnect(struct omap_dss_device *src,
+                          struct omap_dss_device *dst)
+{
+       omapdss_device_disconnect(dst, dst->next);
+}
+
 static void dpi_display_enable(struct omap_dss_device *dssdev)
 {
        struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
@@ -446,20 +506,6 @@ static void dpi_display_disable(struct omap_dss_device *dssdev)
        mutex_unlock(&dpi->lock);
 }
 
-static void dpi_set_timings(struct omap_dss_device *dssdev,
-                           const struct drm_display_mode *mode)
-{
-       struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
-
-       DSSDBG("dpi_set_timings\n");
-
-       mutex_lock(&dpi->lock);
-
-       dpi->pixelclock = mode->clock * 1000;
-
-       mutex_unlock(&dpi->lock);
-}
-
 static int dpi_check_timings(struct omap_dss_device *dssdev,
                             struct drm_display_mode *mode)
 {
@@ -500,41 +546,30 @@ static int dpi_check_timings(struct omap_dss_device *dssdev,
        return 0;
 }
 
-static int dpi_verify_pll(struct dss_pll *pll)
+static void dpi_set_timings(struct omap_dss_device *dssdev,
+                           const struct drm_display_mode *mode)
 {
-       int r;
+       struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);
 
-       /* do initial setup with the PLL to see if it is operational */
+       DSSDBG("dpi_set_timings\n");
 
-       r = dss_pll_enable(pll);
-       if (r)
-               return r;
+       mutex_lock(&dpi->lock);
 
-       dss_pll_disable(pll);
+       dpi->pixelclock = mode->clock * 1000;
 
-       return 0;
+       mutex_unlock(&dpi->lock);
 }
 
-static void dpi_init_pll(struct dpi_data *dpi)
-{
-       struct dss_pll *pll;
-
-       if (dpi->pll)
-               return;
-
-       dpi->clk_src = dpi_get_clk_src(dpi);
-
-       pll = dss_pll_find_by_src(dpi->dss, dpi->clk_src);
-       if (!pll)
-               return;
+static const struct omap_dss_device_ops dpi_ops = {
+       .connect = dpi_connect,
+       .disconnect = dpi_disconnect,
 
-       if (dpi_verify_pll(pll)) {
-               DSSWARN("PLL not operational\n");
-               return;
-       }
+       .enable = dpi_display_enable,
+       .disable = dpi_display_disable,
 
-       dpi->pll = pll;
-}
+       .check_timings = dpi_check_timings,
+       .set_timings = dpi_set_timings,
+};
 
 /*
  * Return a hardcoded channel for the DPI output. This should work for
@@ -572,33 +607,6 @@ static enum omap_channel dpi_get_channel(struct dpi_data *dpi)
        }
 }
 
-static int dpi_connect(struct omap_dss_device *src,
-                      struct omap_dss_device *dst)
-{
-       struct dpi_data *dpi = dpi_get_data_from_dssdev(dst);
-
-       dpi_init_pll(dpi);
-
-       return omapdss_device_connect(dst->dss, dst, dst->next);
-}
-
-static void dpi_disconnect(struct omap_dss_device *src,
-                          struct omap_dss_device *dst)
-{
-       omapdss_device_disconnect(dst, dst->next);
-}
-
-static const struct omap_dss_device_ops dpi_ops = {
-       .connect = dpi_connect,
-       .disconnect = dpi_disconnect,
-
-       .enable = dpi_display_enable,
-       .disable = dpi_display_disable,
-
-       .check_timings = dpi_check_timings,
-       .set_timings = dpi_set_timings,
-};
-
 static int dpi_init_output_port(struct dpi_data *dpi, struct device_node *port)
 {
        struct omap_dss_device *out = &dpi->output;
@@ -647,6 +655,10 @@ static void dpi_uninit_output_port(struct device_node *port)
        omapdss_device_cleanup_output(out);
 }
 
+/* -----------------------------------------------------------------------------
+ * Initialisation and Cleanup
+ */
+
 static const struct soc_device_attribute dpi_soc_devices[] = {
        { .machine = "OMAP3[456]*" },
        { .machine = "[AD]M37*" },