drm/vc4: Fix ->clock_select setting for the VEC encoder

PV_CONTROL_CLK_SELECT_VEC is actually 2 and not 0. Fix the definition and
rework the vc4_set_crtc_possible_masks() to cover the full range of the
PV_CONTROL_CLK_SELECT field.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 82f914a..a0fd3e6 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -83,8 +83,7 @@ struct vc4_crtc_data {
        /* Which channel of the HVS this pixelvalve sources from. */
        int hvs_channel;
 
-       enum vc4_encoder_type encoder0_type;
-       enum vc4_encoder_type encoder1_type;
+       enum vc4_encoder_type encoder_types[4];
 };
 
 #define CRTC_WRITE(offset, val) writel(val, vc4_crtc->regs + (offset))
@@ -867,20 +866,26 @@ static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
 
 static const struct vc4_crtc_data pv0_data = {
        .hvs_channel = 0,
-       .encoder0_type = VC4_ENCODER_TYPE_DSI0,
-       .encoder1_type = VC4_ENCODER_TYPE_DPI,
+       .encoder_types = {
+               [PV_CONTROL_CLK_SELECT_DSI] = VC4_ENCODER_TYPE_DSI0,
+               [PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI] = VC4_ENCODER_TYPE_DPI,
+       },
 };
 
 static const struct vc4_crtc_data pv1_data = {
        .hvs_channel = 2,
-       .encoder0_type = VC4_ENCODER_TYPE_DSI1,
-       .encoder1_type = VC4_ENCODER_TYPE_SMI,
+       .encoder_types = {
+               [PV_CONTROL_CLK_SELECT_DSI] = VC4_ENCODER_TYPE_DSI1,
+               [PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI] = VC4_ENCODER_TYPE_SMI,
+       },
 };
 
 static const struct vc4_crtc_data pv2_data = {
        .hvs_channel = 1,
-       .encoder0_type = VC4_ENCODER_TYPE_VEC,
-       .encoder1_type = VC4_ENCODER_TYPE_HDMI,
+       .encoder_types = {
+               [PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI] = VC4_ENCODER_TYPE_HDMI,
+               [PV_CONTROL_CLK_SELECT_VEC] = VC4_ENCODER_TYPE_VEC,
+       },
 };
 
 static const struct of_device_id vc4_crtc_dt_match[] = {
@@ -894,17 +899,20 @@ static void vc4_set_crtc_possible_masks(struct drm_device *drm,
                                        struct drm_crtc *crtc)
 {
        struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+       const struct vc4_crtc_data *crtc_data = vc4_crtc->data;
+       const enum vc4_encoder_type *encoder_types = crtc_data->encoder_types;
        struct drm_encoder *encoder;
 
        drm_for_each_encoder(encoder, drm) {
                struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
-
-               if (vc4_encoder->type == vc4_crtc->data->encoder0_type) {
-                       vc4_encoder->clock_select = 0;
-                       encoder->possible_crtcs |= drm_crtc_mask(crtc);
-               } else if (vc4_encoder->type == vc4_crtc->data->encoder1_type) {
-                       vc4_encoder->clock_select = 1;
-                       encoder->possible_crtcs |= drm_crtc_mask(crtc);
+               int i;
+
+               for (i = 0; i < ARRAY_SIZE(crtc_data->encoder_types); i++) {
+                       if (vc4_encoder->type == encoder_types[i]) {
+                               vc4_encoder->clock_select = i;
+                               encoder->possible_crtcs |= drm_crtc_mask(crtc);
+                               break;
+                       }
                }
        }
 }

diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index b3064e2..875a70f 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -194,6 +194,7 @@ to_vc4_plane(struct drm_plane *plane)
 }
 
 enum vc4_encoder_type {
+       VC4_ENCODER_TYPE_NONE,
        VC4_ENCODER_TYPE_HDMI,
        VC4_ENCODER_TYPE_VEC,
        VC4_ENCODER_TYPE_DSI0,

diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index 1aa44c2..39f6886 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -177,8 +177,9 @@
 # define PV_CONTROL_WAIT_HSTART                        BIT(12)
 # define PV_CONTROL_PIXEL_REP_MASK             VC4_MASK(5, 4)
 # define PV_CONTROL_PIXEL_REP_SHIFT            4
-# define PV_CONTROL_CLK_SELECT_DSI_VEC         0
+# define PV_CONTROL_CLK_SELECT_DSI             0
 # define PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI    1
+# define PV_CONTROL_CLK_SELECT_VEC             2
 # define PV_CONTROL_CLK_SELECT_MASK            VC4_MASK(3, 2)
 # define PV_CONTROL_CLK_SELECT_SHIFT           2
 # define PV_CONTROL_FIFO_CLR                   BIT(1)