drm/i915/hdmi: Change the write_infoframe vfunc to take a buffer and a type

First step in the move to the shared infoframe infrastructure, let's
move the different infoframe helpers and the write_infoframe() vfunc to
a type (enum hdmi_infoframe_type) and a buffer + len instead of using
our struct dip_infoframe.

v2: constify the infoframe pointer and don't mix signs (Ville Syrjälä)

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
Signed-off-by: Thierry Reding <thierry.reding at avionic-design.de>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 59 insertions, 51 deletions

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 54e389de9f42..712e29e27c14 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -26,6 +26,7 @@
 #define __INTEL_DRV_H__
 
 #include <linux/i2c.h>
+#include <linux/hdmi.h>
 #include <drm/i915_drm.h>
 #include "i915_drv.h"
 #include <drm/drm_crtc.h>
@@ -464,7 +465,8 @@ struct intel_hdmi {
         enum hdmi_force_audio force_audio;
         bool rgb_quant_range_selectable;
         void (*write_infoframe)(struct drm_encoder *encoder,
-                                struct dip_infoframe *frame);
+                                enum hdmi_infoframe_type type,
+                                const uint8_t *frame, ssize_t len);
         void (*set_infoframes)(struct drm_encoder *encoder,
                                struct drm_display_mode *adjusted_mode);
 };
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 5cad59fd6bd2..951f4817e1b6 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -29,6 +29,7 @@
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/hdmi.h>
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
@@ -81,74 +82,75 @@ void intel_dip_infoframe_csum(struct dip_infoframe *frame)
         frame->checksum = 0x100 - sum;
 }
 
-static u32 g4x_infoframe_index(struct dip_infoframe *frame)
+static u32 g4x_infoframe_index(enum hdmi_infoframe_type type)
 {
-        switch (frame->type) {
-        case DIP_TYPE_AVI:
+        switch (type) {
+        case HDMI_INFOFRAME_TYPE_AVI:
                 return VIDEO_DIP_SELECT_AVI;
-        case DIP_TYPE_SPD:
+        case HDMI_INFOFRAME_TYPE_SPD:
                 return VIDEO_DIP_SELECT_SPD;
         default:
-                DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
+                DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
                 return 0;
         }
 }
 
-static u32 g4x_infoframe_enable(struct dip_infoframe *frame)
+static u32 g4x_infoframe_enable(enum hdmi_infoframe_type type)
 {
-        switch (frame->type) {
-        case DIP_TYPE_AVI:
+        switch (type) {
+        case HDMI_INFOFRAME_TYPE_AVI:
                 return VIDEO_DIP_ENABLE_AVI;
-        case DIP_TYPE_SPD:
+        case HDMI_INFOFRAME_TYPE_SPD:
                 return VIDEO_DIP_ENABLE_SPD;
         default:
-                DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
+                DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
                 return 0;
         }
 }
 
-static u32 hsw_infoframe_enable(struct dip_infoframe *frame)
+static u32 hsw_infoframe_enable(enum hdmi_infoframe_type type)
 {
-        switch (frame->type) {
-        case DIP_TYPE_AVI:
+        switch (type) {
+        case HDMI_INFOFRAME_TYPE_AVI:
                 return VIDEO_DIP_ENABLE_AVI_HSW;
-        case DIP_TYPE_SPD:
+        case HDMI_INFOFRAME_TYPE_SPD:
                 return VIDEO_DIP_ENABLE_SPD_HSW;
         default:
-                DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
+                DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
                 return 0;
         }
 }
 
-static u32 hsw_infoframe_data_reg(struct dip_infoframe *frame,
+static u32 hsw_infoframe_data_reg(enum hdmi_infoframe_type type,
                                   enum transcoder cpu_transcoder)
 {
-        switch (frame->type) {
-        case DIP_TYPE_AVI:
+        switch (type) {
+        case HDMI_INFOFRAME_TYPE_AVI:
                 return HSW_TVIDEO_DIP_AVI_DATA(cpu_transcoder);
-        case DIP_TYPE_SPD:
+        case HDMI_INFOFRAME_TYPE_SPD:
                 return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder);
         default:
-                DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
+                DRM_DEBUG_DRIVER("unknown info frame type %d\n", type);
                 return 0;
         }
 }
 
 static void g4x_write_infoframe(struct drm_encoder *encoder,
-                                struct dip_infoframe *frame)
+                                enum hdmi_infoframe_type type,
+                                const uint8_t *frame, ssize_t len)
 {
         uint32_t *data = (uint32_t *)frame;
         struct drm_device *dev = encoder->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
         u32 val = I915_READ(VIDEO_DIP_CTL);
-        unsigned i, len = DIP_HEADER_SIZE + frame->len;
+        int i;
 
         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 
         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
-        val |= g4x_infoframe_index(frame);
+        val |= g4x_infoframe_index(type);
 
-        val &= ~g4x_infoframe_enable(frame);
+        val &= ~g4x_infoframe_enable(type);
 
         I915_WRITE(VIDEO_DIP_CTL, val);
 
@@ -162,7 +164,7 @@ static void g4x_write_infoframe(struct drm_encoder *encoder,
                 I915_WRITE(VIDEO_DIP_DATA, 0);
         mmiowb();
 
-        val |= g4x_infoframe_enable(frame);
+        val |= g4x_infoframe_enable(type);
         val &= ~VIDEO_DIP_FREQ_MASK;
         val |= VIDEO_DIP_FREQ_VSYNC;
 
@@ -171,22 +173,22 @@ static void g4x_write_infoframe(struct drm_encoder *encoder,
 }
 
 static void ibx_write_infoframe(struct drm_encoder *encoder,
-                                struct dip_infoframe *frame)
+                                enum hdmi_infoframe_type type,
+                                const uint8_t *frame, ssize_t len)
 {
         uint32_t *data = (uint32_t *)frame;
         struct drm_device *dev = encoder->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
-        int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
-        unsigned i, len = DIP_HEADER_SIZE + frame->len;
+        int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
         u32 val = I915_READ(reg);
 
         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 
         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
-        val |= g4x_infoframe_index(frame);
+        val |= g4x_infoframe_index(type);
 
-        val &= ~g4x_infoframe_enable(frame);
+        val &= ~g4x_infoframe_enable(type);
 
         I915_WRITE(reg, val);
 
@@ -200,7 +202,7 @@ static void ibx_write_infoframe(struct drm_encoder *encoder,
                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
         mmiowb();
 
-        val |= g4x_infoframe_enable(frame);
+        val |= g4x_infoframe_enable(type);
         val &= ~VIDEO_DIP_FREQ_MASK;
         val |= VIDEO_DIP_FREQ_VSYNC;
 
@@ -209,25 +211,25 @@ static void ibx_write_infoframe(struct drm_encoder *encoder,
 }
 
 static void cpt_write_infoframe(struct drm_encoder *encoder,
-                                struct dip_infoframe *frame)
+                                enum hdmi_infoframe_type type,
+                                const uint8_t *frame, ssize_t len)
 {
         uint32_t *data = (uint32_t *)frame;
         struct drm_device *dev = encoder->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
-        int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
-        unsigned i, len = DIP_HEADER_SIZE + frame->len;
+        int i, reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
         u32 val = I915_READ(reg);
 
         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 
         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
-        val |= g4x_infoframe_index(frame);
+        val |= g4x_infoframe_index(type);
 
         /* The DIP control register spec says that we need to update the AVI
          * infoframe without clearing its enable bit */
-        if (frame->type != DIP_TYPE_AVI)
-                val &= ~g4x_infoframe_enable(frame);
+        if (type != HDMI_INFOFRAME_TYPE_AVI)
+                val &= ~g4x_infoframe_enable(type);
 
         I915_WRITE(reg, val);
 
@@ -241,7 +243,7 @@ static void cpt_write_infoframe(struct drm_encoder *encoder,
                 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
         mmiowb();
 
-        val |= g4x_infoframe_enable(frame);
+        val |= g4x_infoframe_enable(type);
         val &= ~VIDEO_DIP_FREQ_MASK;
         val |= VIDEO_DIP_FREQ_VSYNC;
 
@@ -250,22 +252,22 @@ static void cpt_write_infoframe(struct drm_encoder *encoder,
 }
 
 static void vlv_write_infoframe(struct drm_encoder *encoder,
-                                     struct dip_infoframe *frame)
+                                enum hdmi_infoframe_type type,
+                                const uint8_t *frame, ssize_t len)
 {
         uint32_t *data = (uint32_t *)frame;
         struct drm_device *dev = encoder->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
-        int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
-        unsigned i, len = DIP_HEADER_SIZE + frame->len;
+        int i, reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
         u32 val = I915_READ(reg);
 
         WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
 
         val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
-        val |= g4x_infoframe_index(frame);
+        val |= g4x_infoframe_index(type);
 
-        val &= ~g4x_infoframe_enable(frame);
+        val &= ~g4x_infoframe_enable(type);
 
         I915_WRITE(reg, val);
 
@@ -279,7 +281,7 @@ static void vlv_write_infoframe(struct drm_encoder *encoder,
                 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
         mmiowb();
 
-        val |= g4x_infoframe_enable(frame);
+        val |= g4x_infoframe_enable(type);
         val &= ~VIDEO_DIP_FREQ_MASK;
         val |= VIDEO_DIP_FREQ_VSYNC;
 
@@ -288,21 +290,24 @@ static void vlv_write_infoframe(struct drm_encoder *encoder,
 }
 
 static void hsw_write_infoframe(struct drm_encoder *encoder,
-                                struct dip_infoframe *frame)
+                                enum hdmi_infoframe_type type,
+                                const uint8_t *frame, ssize_t len)
 {
         uint32_t *data = (uint32_t *)frame;
         struct drm_device *dev = encoder->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
         u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
-        u32 data_reg = hsw_infoframe_data_reg(frame, intel_crtc->config.cpu_transcoder);
-        unsigned int i, len = DIP_HEADER_SIZE + frame->len;
+        u32 data_reg;
+        int i;
         u32 val = I915_READ(ctl_reg);
 
+        data_reg = hsw_infoframe_data_reg(type,
+                                          intel_crtc->config.cpu_transcoder);
         if (data_reg == 0)
                 return;
 
-        val &= ~hsw_infoframe_enable(frame);
+        val &= ~hsw_infoframe_enable(type);
         I915_WRITE(ctl_reg, val);
 
         mmiowb();
@@ -315,7 +320,7 @@ static void hsw_write_infoframe(struct drm_encoder *encoder,
                 I915_WRITE(data_reg + i, 0);
         mmiowb();
 
-        val |= hsw_infoframe_enable(frame);
+        val |= hsw_infoframe_enable(type);
         I915_WRITE(ctl_reg, val);
         POSTING_READ(ctl_reg);
 }
@@ -326,7 +331,8 @@ static void intel_set_infoframe(struct drm_encoder *encoder,
         struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 
         intel_dip_infoframe_csum(frame);
-        intel_hdmi->write_infoframe(encoder, frame);
+        intel_hdmi->write_infoframe(encoder, frame->type, (uint8_t *)frame,
+                                    DIP_HEADER_SIZE + frame->len);
 }
 
 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,