{ OUI(0x00, 0x00, 0x00), DEVICE_ID('C', 'H', '7', '5', '1', '1'), false, BIT(DP_DPCD_QUIRK_NO_SINK_COUNT) },
/* Synaptics DP1.4 MST hubs can support DSC without virtual DPCD */
{ OUI(0x90, 0xCC, 0x24), DEVICE_ID_ANY, true, BIT(DP_DPCD_QUIRK_DSC_WITHOUT_VIRTUAL_DPCD) },
+ /* Apple MacBookPro 2017 15 inch eDP Retina panel reports too low DP_MAX_LINK_RATE */
+ { OUI(0x00, 0x10, 0xfa), DEVICE_ID(101, 68, 21, 101, 98, 97), false, BIT(DP_DPCD_QUIRK_CAN_DO_MAX_LINK_RATE_3_24_GBPS) },
};
#undef OUI
{ MFG(0x06, 0xaf), PROD_ID(0xeb, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
{ MFG(0x4d, 0x10), PROD_ID(0xc7, 0x14), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
{ MFG(0x4d, 0x10), PROD_ID(0xe6, 0x14), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
+ { MFG(0x4c, 0x83), PROD_ID(0x47, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
};
#undef MFG
return num_bpc;
}
EXPORT_SYMBOL(drm_dp_dsc_sink_supported_input_bpcs);
+
+/**
+ * drm_dp_get_phy_test_pattern() - get the requested pattern from the sink.
+ * @aux: DisplayPort AUX channel
+ * @data: DP phy compliance test parameters.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int drm_dp_get_phy_test_pattern(struct drm_dp_aux *aux,
+ struct drm_dp_phy_test_params *data)
+{
+ int err;
+ u8 rate, lanes;
+
+ err = drm_dp_dpcd_readb(aux, DP_TEST_LINK_RATE, &rate);
+ if (err < 0)
+ return err;
+ data->link_rate = drm_dp_bw_code_to_link_rate(rate);
+
+ err = drm_dp_dpcd_readb(aux, DP_TEST_LANE_COUNT, &lanes);
+ if (err < 0)
+ return err;
+ data->num_lanes = lanes & DP_MAX_LANE_COUNT_MASK;
+
+ if (lanes & DP_ENHANCED_FRAME_CAP)
+ data->enhanced_frame_cap = true;
+
+ err = drm_dp_dpcd_readb(aux, DP_PHY_TEST_PATTERN, &data->phy_pattern);
+ if (err < 0)
+ return err;
+
+ switch (data->phy_pattern) {
+ case DP_PHY_TEST_PATTERN_80BIT_CUSTOM:
+ err = drm_dp_dpcd_read(aux, DP_TEST_80BIT_CUSTOM_PATTERN_7_0,
+ &data->custom80, sizeof(data->custom80));
+ if (err < 0)
+ return err;
+
+ break;
+ case DP_PHY_TEST_PATTERN_CP2520:
+ err = drm_dp_dpcd_read(aux, DP_TEST_HBR2_SCRAMBLER_RESET,
+ &data->hbr2_reset,
+ sizeof(data->hbr2_reset));
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_dp_get_phy_test_pattern);
+
+/**
+ * drm_dp_set_phy_test_pattern() - set the pattern to the sink.
+ * @aux: DisplayPort AUX channel
+ * @data: DP phy compliance test parameters.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int drm_dp_set_phy_test_pattern(struct drm_dp_aux *aux,
+ struct drm_dp_phy_test_params *data, u8 dp_rev)
+{
+ int err, i;
+ u8 link_config[2];
+ u8 test_pattern;
+
+ link_config[0] = drm_dp_link_rate_to_bw_code(data->link_rate);
+ link_config[1] = data->num_lanes;
+ if (data->enhanced_frame_cap)
+ link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
+ err = drm_dp_dpcd_write(aux, DP_LINK_BW_SET, link_config, 2);
+ if (err < 0)
+ return err;
+
+ test_pattern = data->phy_pattern;
+ if (dp_rev < 0x12) {
+ test_pattern = (test_pattern << 2) &
+ DP_LINK_QUAL_PATTERN_11_MASK;
+ err = drm_dp_dpcd_writeb(aux, DP_TRAINING_PATTERN_SET,
+ test_pattern);
+ if (err < 0)
+ return err;
+ } else {
+ for (i = 0; i < data->num_lanes; i++) {
+ err = drm_dp_dpcd_writeb(aux,
+ DP_LINK_QUAL_LANE0_SET + i,
+ test_pattern);
+ if (err < 0)
+ return err;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_dp_set_phy_test_pattern);
+
+static const char *dp_pixelformat_get_name(enum dp_pixelformat pixelformat)
+{
+ if (pixelformat < 0 || pixelformat > DP_PIXELFORMAT_RESERVED)
+ return "Invalid";
+
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "RGB";
+ case DP_PIXELFORMAT_YUV444:
+ return "YUV444";
+ case DP_PIXELFORMAT_YUV422:
+ return "YUV422";
+ case DP_PIXELFORMAT_YUV420:
+ return "YUV420";
+ case DP_PIXELFORMAT_Y_ONLY:
+ return "Y_ONLY";
+ case DP_PIXELFORMAT_RAW:
+ return "RAW";
+ default:
+ return "Reserved";
+ }
+}
+
+static const char *dp_colorimetry_get_name(enum dp_pixelformat pixelformat,
+ enum dp_colorimetry colorimetry)
+{
+ if (pixelformat < 0 || pixelformat > DP_PIXELFORMAT_RESERVED)
+ return "Invalid";
+
+ switch (colorimetry) {
+ case DP_COLORIMETRY_DEFAULT:
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "sRGB";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "BT.601";
+ case DP_PIXELFORMAT_Y_ONLY:
+ return "DICOM PS3.14";
+ case DP_PIXELFORMAT_RAW:
+ return "Custom Color Profile";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_RGB_WIDE_FIXED: /* and DP_COLORIMETRY_BT709_YCC */
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "Wide Fixed";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "BT.709";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_RGB_WIDE_FLOAT: /* and DP_COLORIMETRY_XVYCC_601 */
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "Wide Float";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "xvYCC 601";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_OPRGB: /* and DP_COLORIMETRY_XVYCC_709 */
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "OpRGB";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "xvYCC 709";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_DCI_P3_RGB: /* and DP_COLORIMETRY_SYCC_601 */
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "DCI-P3";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "sYCC 601";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_RGB_CUSTOM: /* and DP_COLORIMETRY_OPYCC_601 */
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "Custom Profile";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "OpYCC 601";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_BT2020_RGB: /* and DP_COLORIMETRY_BT2020_CYCC */
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_RGB:
+ return "BT.2020 RGB";
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "BT.2020 CYCC";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_BT2020_YCC:
+ switch (pixelformat) {
+ case DP_PIXELFORMAT_YUV444:
+ case DP_PIXELFORMAT_YUV422:
+ case DP_PIXELFORMAT_YUV420:
+ return "BT.2020 YCC";
+ default:
+ return "Reserved";
+ }
+ default:
+ return "Invalid";
+ }
+}
+
+static const char *dp_dynamic_range_get_name(enum dp_dynamic_range dynamic_range)
+{
+ switch (dynamic_range) {
+ case DP_DYNAMIC_RANGE_VESA:
+ return "VESA range";
+ case DP_DYNAMIC_RANGE_CTA:
+ return "CTA range";
+ default:
+ return "Invalid";
+ }
+}
+
+static const char *dp_content_type_get_name(enum dp_content_type content_type)
+{
+ switch (content_type) {
+ case DP_CONTENT_TYPE_NOT_DEFINED:
+ return "Not defined";
+ case DP_CONTENT_TYPE_GRAPHICS:
+ return "Graphics";
+ case DP_CONTENT_TYPE_PHOTO:
+ return "Photo";
+ case DP_CONTENT_TYPE_VIDEO:
+ return "Video";
+ case DP_CONTENT_TYPE_GAME:
+ return "Game";
+ default:
+ return "Reserved";
+ }
+}
+
+void drm_dp_vsc_sdp_log(const char *level, struct device *dev,
+ const struct drm_dp_vsc_sdp *vsc)
+{
+#define DP_SDP_LOG(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
+ DP_SDP_LOG("DP SDP: %s, revision %u, length %u\n", "VSC",
+ vsc->revision, vsc->length);
+ DP_SDP_LOG(" pixelformat: %s\n",
+ dp_pixelformat_get_name(vsc->pixelformat));
+ DP_SDP_LOG(" colorimetry: %s\n",
+ dp_colorimetry_get_name(vsc->pixelformat, vsc->colorimetry));
+ DP_SDP_LOG(" bpc: %u\n", vsc->bpc);
+ DP_SDP_LOG(" dynamic range: %s\n",
+ dp_dynamic_range_get_name(vsc->dynamic_range));
+ DP_SDP_LOG(" content type: %s\n",
+ dp_content_type_get_name(vsc->content_type));
+#undef DP_SDP_LOG
+}
+EXPORT_SYMBOL(drm_dp_vsc_sdp_log);
#include <drm/drm_crtc.h>
#include <drm/drm_drv.h>
#include <drm/drm_framebuffer.h>
+#include <drm/drm_managed.h>
#include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_print.h>
#include <drm/drm_vblank.h>
/**
* DOC: vblank handling
*
+ * From the computer's perspective, every time the monitor displays
+ * a new frame the scanout engine has "scanned out" the display image
+ * from top to bottom, one row of pixels at a time. The current row
+ * of pixels is referred to as the current scanline.
+ *
+ * In addition to the display's visible area, there's usually a couple of
+ * extra scanlines which aren't actually displayed on the screen.
+ * These extra scanlines don't contain image data and are occasionally used
+ * for features like audio and infoframes. The region made up of these
+ * scanlines is referred to as the vertical blanking region, or vblank for
+ * short.
+ *
+ * For historical reference, the vertical blanking period was designed to
+ * give the electron gun (on CRTs) enough time to move back to the top of
+ * the screen to start scanning out the next frame. Similar for horizontal
+ * blanking periods. They were designed to give the electron gun enough
+ * time to move back to the other side of the screen to start scanning the
+ * next scanline.
+ *
+ * ::
+ *
+ *
+ * physical → ⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
+ * top of | |
+ * display | |
+ * | New frame |
+ * | |
+ * |↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓|
+ * |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| ← Scanline,
+ * |↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓| updates the
+ * | | frame as it
+ * | | travels down
+ * | | ("sacn out")
+ * | Old frame |
+ * | |
+ * | |
+ * | |
+ * | | physical
+ * | | bottom of
+ * vertical |⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽| ← display
+ * blanking ┆xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx┆
+ * region → ┆xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx┆
+ * ┆xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx┆
+ * start of → ⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
+ * new frame
+ *
+ * "Physical top of display" is the reference point for the high-precision/
+ * corrected timestamp.
+ *
+ * On a lot of display hardware, programming needs to take effect during the
+ * vertical blanking period so that settings like gamma, the image buffer
+ * buffer to be scanned out, etc. can safely be changed without showing
+ * any visual artifacts on the screen. In some unforgiving hardware, some of
+ * this programming has to both start and end in the same vblank. To help
+ * with the timing of the hardware programming, an interrupt is usually
+ * available to notify the driver when it can start the updating of registers.
+ * The interrupt is in this context named the vblank interrupt.
+ *
+ * The vblank interrupt may be fired at different points depending on the
+ * hardware. Some hardware implementations will fire the interrupt when the
+ * new frame start, other implementations will fire the interrupt at different
+ * points in time.
+ *
* Vertical blanking plays a major role in graphics rendering. To achieve
* tear-free display, users must synchronize page flips and/or rendering to
* vertical blanking. The DRM API offers ioctls to perform page flips
DRM_DEBUG_VBL("updating vblank count on crtc %u:"
" current=%llu, diff=%u, hw=%u hw_last=%u\n",
- pipe, atomic64_read(&vblank->count), diff,
- cur_vblank, vblank->last);
+ pipe, (unsigned long long)atomic64_read(&vblank->count),
+ diff, cur_vblank, vblank->last);
if (diff == 0) {
WARN_ON_ONCE(cur_vblank != vblank->last);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
}
-void drm_vblank_cleanup(struct drm_device *dev)
+static void drm_vblank_init_release(struct drm_device *dev, void *ptr)
{
unsigned int pipe;
- /* Bail if the driver didn't call drm_vblank_init() */
- if (dev->num_crtcs == 0)
- return;
-
for (pipe = 0; pipe < dev->num_crtcs; pipe++) {
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
del_timer_sync(&vblank->disable_timer);
}
-
- kfree(dev->vblank);
-
- dev->num_crtcs = 0;
}
/**
* @num_crtcs: number of CRTCs supported by @dev
*
* This function initializes vblank support for @num_crtcs display pipelines.
- * Cleanup is handled by the DRM core, or through calling drm_dev_fini() for
- * drivers with a &drm_driver.release callback.
+ * Cleanup is handled automatically through a cleanup function added with
+ * drmm_add_action().
*
* Returns:
* Zero on success or a negative error code on failure.
*/
int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs)
{
- int ret = -ENOMEM;
+ int ret;
unsigned int i;
spin_lock_init(&dev->vbl_lock);
spin_lock_init(&dev->vblank_time_lock);
+ dev->vblank = drmm_kcalloc(dev, num_crtcs, sizeof(*dev->vblank), GFP_KERNEL);
+ if (!dev->vblank)
+ return -ENOMEM;
+
dev->num_crtcs = num_crtcs;
- dev->vblank = kcalloc(num_crtcs, sizeof(*dev->vblank), GFP_KERNEL);
- if (!dev->vblank)
- goto err;
+ ret = drmm_add_action(dev, drm_vblank_init_release, NULL);
+ if (ret)
+ return ret;
for (i = 0; i < num_crtcs; i++) {
struct drm_vblank_crtc *vblank = &dev->vblank[i];
DRM_INFO("Supports vblank timestamp caching Rev 2 (21.10.2013).\n");
return 0;
-
-err:
- dev->num_crtcs = 0;
- return ret;
}
EXPORT_SYMBOL(drm_vblank_init);
projects / J-linux.git / commitdiff