From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Use the generic HDMI infoframe helpers to get rid of the duplicate
implementation in the i915 driver.
This patch is based on the initial patch by Thierry Reding, but with a
different approach.
TODO:
- The SDVO part is totally untested. I am not sure if the buffer
size on the SDVO code must be a multiple of 4.
- The HDMI part was tested only on SNB/CPT.
- The patch is forcing pixel_repeat to 1 so I can properly test the
patch. Remove this before the final version.
- The correctnes of this patch depends on a fix on patch "video: add
Generic HDMI infoframe helpers"
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_drv.h | 65 +------------
drivers/gpu/drm/i915/intel_hdmi.c | 191 ++++++++++++++++++++------------------
drivers/gpu/drm/i915/intel_sdvo.c | 27 +++---
3 files changed, 117 insertions(+), 166 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index d282052..2e16190 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>
@@ -286,66 +287,6 @@ struct cxsr_latency {
#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
#define to_intel_plane(x) container_of(x, struct intel_plane, base)
-#define DIP_HEADER_SIZE 5
-
-#define DIP_TYPE_AVI 0x82
-#define DIP_VERSION_AVI 0x2
-#define DIP_LEN_AVI 13
-#define DIP_AVI_PR_1 0
-#define DIP_AVI_PR_2 1
-#define DIP_AVI_RGB_QUANT_RANGE_DEFAULT (0 << 2)
-#define DIP_AVI_RGB_QUANT_RANGE_LIMITED (1 << 2)
-#define DIP_AVI_RGB_QUANT_RANGE_FULL (2 << 2)
-
-#define DIP_TYPE_SPD 0x83
-#define DIP_VERSION_SPD 0x1
-#define DIP_LEN_SPD 25
-#define DIP_SPD_UNKNOWN 0
-#define DIP_SPD_DSTB 0x1
-#define DIP_SPD_DVDP 0x2
-#define DIP_SPD_DVHS 0x3
-#define DIP_SPD_HDDVR 0x4
-#define DIP_SPD_DVC 0x5
-#define DIP_SPD_DSC 0x6
-#define DIP_SPD_VCD 0x7
-#define DIP_SPD_GAME 0x8
-#define DIP_SPD_PC 0x9
-#define DIP_SPD_BD 0xa
-#define DIP_SPD_SCD 0xb
-
-struct dip_infoframe {
- uint8_t type; /* HB0 */
- uint8_t ver; /* HB1 */
- uint8_t len; /* HB2 - body len, not including checksum */
- uint8_t ecc; /* Header ECC */
- uint8_t checksum; /* PB0 */
- union {
- struct {
- /* PB1 - Y 6:5, A 4:4, B 3:2, S 1:0 */
- uint8_t Y_A_B_S;
- /* PB2 - C 7:6, M 5:4, R 3:0 */
- uint8_t C_M_R;
- /* PB3 - ITC 7:7, EC 6:4, Q 3:2, SC 1:0 */
- uint8_t ITC_EC_Q_SC;
- /* PB4 - VIC 6:0 */
- uint8_t VIC;
- /* PB5 - YQ 7:6, CN 5:4, PR 3:0 */
- uint8_t YQ_CN_PR;
- /* PB6 to PB13 */
- uint16_t top_bar_end;
- uint16_t bottom_bar_start;
- uint16_t left_bar_end;
- uint16_t right_bar_start;
- } __attribute__ ((packed)) avi;
- struct {
- uint8_t vn[8];
- uint8_t pd[16];
- uint8_t sdi;
- } __attribute__ ((packed)) spd;
- uint8_t payload[27];
- } __attribute__ ((packed)) body;
-} __attribute__((packed));
-
struct intel_hdmi {
u32 sdvox_reg;
int ddc_bus;
@@ -356,7 +297,8 @@ 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);
+ uint8_t *frame, ssize_t len,
+ enum hdmi_infoframe_type type);
void (*set_infoframes)(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode);
};
@@ -450,7 +392,6 @@ extern struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
extern bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
-extern void intel_dip_infoframe_csum(struct dip_infoframe *avi_if);
extern bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg,
bool is_sdvob);
extern void intel_dvo_init(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 75d5152..06af4a9 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>
@@ -66,88 +67,75 @@ static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
return enc_to_intel_hdmi(&intel_attached_encoder(connector)->base);
}
-void intel_dip_infoframe_csum(struct dip_infoframe *frame)
+static u32 g4x_infoframe_index(enum hdmi_infoframe_type type)
{
- uint8_t *data = (uint8_t *)frame;
- uint8_t sum = 0;
- unsigned i;
-
- frame->checksum = 0;
- frame->ecc = 0;
-
- for (i = 0; i < frame->len + DIP_HEADER_SIZE; i++)
- sum += data[i];
-
- frame->checksum = 0x100 - sum;
-}
-
-static u32 g4x_infoframe_index(struct dip_infoframe *frame)
-{
- 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, enum pipe pipe)
+static u32 hsw_infoframe_data_reg(enum hdmi_infoframe_type type, enum pipe pipe)
{
- switch (frame->type) {
- case DIP_TYPE_AVI:
+ switch (type) {
+ case HDMI_INFOFRAME_TYPE_AVI:
return HSW_TVIDEO_DIP_AVI_DATA(pipe);
- case DIP_TYPE_SPD:
+ case HDMI_INFOFRAME_TYPE_SPD:
return HSW_TVIDEO_DIP_SPD_DATA(pipe);
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)
+ uint8_t *frame,
+ ssize_t len,
+ enum hdmi_infoframe_type type)
{
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;
+ unsigned 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);
@@ -161,7 +149,7 @@ 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;
@@ -170,22 +158,24 @@ static void g4x_write_infoframe(struct drm_encoder *encoder,
}
static void ibx_write_infoframe(struct drm_encoder *encoder,
- struct dip_infoframe *frame)
+ uint8_t *frame,
+ ssize_t len,
+ enum hdmi_infoframe_type type)
{
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;
+ unsigned int i;
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);
@@ -199,7 +189,7 @@ 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;
@@ -208,25 +198,27 @@ static void ibx_write_infoframe(struct drm_encoder *encoder,
}
static void cpt_write_infoframe(struct drm_encoder *encoder,
- struct dip_infoframe *frame)
+ uint8_t *frame,
+ ssize_t len,
+ enum hdmi_infoframe_type type)
{
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;
+ unsigned int i;
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);
@@ -240,31 +232,34 @@ 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;
I915_WRITE(reg, val);
POSTING_READ(reg);
+
}
static void vlv_write_infoframe(struct drm_encoder *encoder,
- struct dip_infoframe *frame)
+ uint8_t *frame,
+ ssize_t len,
+ enum hdmi_infoframe_type type)
{
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;
+ unsigned int i;
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);
@@ -278,7 +273,7 @@ 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;
@@ -287,21 +282,23 @@ static void vlv_write_infoframe(struct drm_encoder *encoder,
}
static void hsw_write_infoframe(struct drm_encoder *encoder,
- struct dip_infoframe *frame)
+ uint8_t *frame,
+ ssize_t len,
+ enum hdmi_infoframe_type type)
{
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->pipe);
- u32 data_reg = hsw_infoframe_data_reg(frame, intel_crtc->pipe);
- unsigned int i, len = DIP_HEADER_SIZE + frame->len;
+ u32 data_reg = hsw_infoframe_data_reg(type, intel_crtc->pipe);
+ unsigned int i;
u32 val = I915_READ(ctl_reg);
if (data_reg == 0)
return;
- val &= ~hsw_infoframe_enable(frame);
+ val &= ~hsw_infoframe_enable(type);
I915_WRITE(ctl_reg, val);
mmiowb();
@@ -314,58 +311,74 @@ 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);
}
-static void intel_set_infoframe(struct drm_encoder *encoder,
- struct dip_infoframe *frame)
-{
- struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
-
- intel_dip_infoframe_csum(frame);
- intel_hdmi->write_infoframe(encoder, frame);
-}
-
static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
- struct dip_infoframe avi_if = {
- .type = DIP_TYPE_AVI,
- .ver = DIP_VERSION_AVI,
- .len = DIP_LEN_AVI,
- };
+ struct hdmi_avi_infoframe frame;
+ uint8_t buffer[20]; /* will be read as uin32_t, so 20 not 18 */
+ ssize_t len;
+
+ memset(buffer, 0, sizeof(buffer));
+
+ len = drm_hdmi_avi_infoframe_from_display_mode(&frame, adjusted_mode);
+ WARN(len < 0, "drm_hdmi_avi_infoframe_from_display_mode failed\n");
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
- avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;
+ frame.pixel_repeat = 1;
if (intel_hdmi->rgb_quant_range_selectable) {
if (adjusted_mode->private_flags & INTEL_MODE_LIMITED_COLOR_RANGE)
- avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_LIMITED;
+ frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;
else
- avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_FULL;
+ frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
}
- avi_if.body.avi.VIC = drm_match_cea_mode(adjusted_mode);
+ len = hdmi_avi_infoframe_pack(&frame, buffer + 1, sizeof(buffer) - 1);
+ WARN(len < 0, "hdmi_avi_infoframe_pack failed\n");
+
+ /* Insert the ECC */
+ buffer[0] = buffer[1];
+ buffer[1] = buffer[2];
+ buffer[2] = buffer[3];
+ buffer[3] = 0;
+ len++;
- intel_set_infoframe(encoder, &avi_if);
+ intel_hdmi->write_infoframe(encoder, buffer, len,
+ HDMI_INFOFRAME_TYPE_AVI);
}
static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
{
- struct dip_infoframe spd_if;
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+ struct hdmi_spd_infoframe frame;
+ uint8_t buffer[32]; /* will be read as uint32_t, so 32, not 30 */
+ ssize_t len;
+
+ memset(buffer, 0, sizeof(buffer));
+
+ len = hdmi_spd_infoframe_init(&frame, "Intel", "Integrated gfx");
+ WARN(len < 0, "hdmi_spd_infoframe_init failed\n");
+
+ frame.sdi = HDMI_SPD_SDI_PC;
+
+ len = hdmi_spd_infoframe_pack(&frame, buffer + 1, sizeof(buffer) - 1);
+ WARN(len < 0, "hdmi_spd_infoframe_pack failed\n");
- memset(&spd_if, 0, sizeof(spd_if));
- spd_if.type = DIP_TYPE_SPD;
- spd_if.ver = DIP_VERSION_SPD;
- spd_if.len = DIP_LEN_SPD;
- strcpy(spd_if.body.spd.vn, "Intel");
- strcpy(spd_if.body.spd.pd, "Integrated gfx");
- spd_if.body.spd.sdi = DIP_SPD_PC;
+ /* Insert the ECC */
+ buffer[0] = buffer[1];
+ buffer[1] = buffer[2];
+ buffer[2] = buffer[3];
+ buffer[3] = 0;
+ len++;
- intel_set_infoframe(encoder, &spd_if);
+ intel_hdmi->write_infoframe(encoder, buffer, len,
+ HDMI_INFOFRAME_TYPE_SPD);
}
static void g4x_set_infoframes(struct drm_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 33b46d9..ae38851 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/export.h>
+#include <linux/hdmi.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
@@ -951,27 +952,23 @@ static bool intel_sdvo_write_infoframe(struct intel_sdvo *intel_sdvo,
static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo,
const struct drm_display_mode *adjusted_mode)
{
- struct dip_infoframe avi_if = {
- .type = DIP_TYPE_AVI,
- .ver = DIP_VERSION_AVI,
- .len = DIP_LEN_AVI,
- };
- uint8_t sdvo_data[4 + sizeof(avi_if.body.avi)];
+ uint8_t sdvo_data[HDMI_AVI_INFOFRAME_SIZE +
+ HDMI_INFOFRAME_HEADER_SIZE];
+ struct hdmi_avi_infoframe frame;
+ ssize_t len;
+
+ len = hdmi_avi_infoframe_init(&frame);
+ WARN(len < 0, "hdmi_avi_infoframe_init failed!\n");
if (intel_sdvo->rgb_quant_range_selectable) {
if (adjusted_mode->private_flags & INTEL_MODE_LIMITED_COLOR_RANGE)
- avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_LIMITED;
+ frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;
else
- avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_FULL;
+ frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
}
- intel_dip_infoframe_csum(&avi_if);
-
- /* sdvo spec says that the ecc is handled by the hw, and it looks like
- * we must not send the ecc field, either. */
- memcpy(sdvo_data, &avi_if, 3);
- sdvo_data[3] = avi_if.checksum;
- memcpy(&sdvo_data[4], &avi_if.body, sizeof(avi_if.body.avi));
+ len = hdmi_avi_infoframe_pack(&frame, sdvo_data, sizeof(sdvo_data));
+ WARN(len < 0, "hdmi_avi_infoframe_pack failed!\n");
return intel_sdvo_write_infoframe(intel_sdvo, SDVO_HBUF_INDEX_AVI_IF,
SDVO_HBUF_TX_VSYNC,
--
1.8.1.2
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