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- search for additional detailed timings in the EDID extension block
- rework sunxi DE2 driver and accompanying DW-HDMI platform driver
to drop redundant device specific code, and later use the DT as a
source of information
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Merge tag 'video-2021-07-rc1-2' of https://source.denx.de/u-boot/custodians/u-boot-video
- search for additional detailed timings in the EDID extension block
- rework sunxi DE2 driver and accompanying DW-HDMI platform driver
to drop redundant device specific code, and later use the DT as a
source of information
This commit is contained in:
Tom Rini
commit
2937f71206
3 changed files with 72 additions and 88 deletions
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@ -169,6 +169,29 @@ static bool cea_is_hdmi_vsdb_present(struct edid_cea861_info *info)
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return false;
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}
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static bool edid_find_valid_timing(void *buf, int count,
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struct display_timing *timing,
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bool (*mode_valid)(void *priv,
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const struct display_timing *timing),
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void *mode_valid_priv)
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{
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struct edid_detailed_timing *t = buf;
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bool found = false;
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int i;
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for (i = 0; i < count && !found; i++, t++)
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if (EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) != 0) {
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decode_timing((u8 *)t, timing);
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if (mode_valid)
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found = mode_valid(mode_valid_priv,
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timing);
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else
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found = true;
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}
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return found;
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}
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int edid_get_timing_validate(u8 *buf, int buf_size,
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struct display_timing *timing,
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int *panel_bits_per_colourp,
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@ -177,44 +200,47 @@ int edid_get_timing_validate(u8 *buf, int buf_size,
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void *mode_valid_priv)
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{
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struct edid1_info *edid = (struct edid1_info *)buf;
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bool timing_done;
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int i;
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bool found;
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if (buf_size < sizeof(*edid) || edid_check_info(edid)) {
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debug("%s: Invalid buffer\n", __func__);
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return -EINVAL;
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}
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if (!EDID1_INFO_VIDEO_INPUT_DIGITAL(*edid)) {
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debug("%s: Not a digital display\n", __func__);
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return -ENOSYS;
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}
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if (!EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(*edid)) {
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debug("%s: No preferred timing\n", __func__);
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return -ENOENT;
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}
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/* Look for detailed timing */
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timing_done = false;
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for (i = 0; i < 4; i++) {
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struct edid_monitor_descriptor *desc;
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/* Look for detailed timing in base EDID */
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found = edid_find_valid_timing(edid->monitor_details.descriptor, 4,
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timing, mode_valid, mode_valid_priv);
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desc = &edid->monitor_details.descriptor[i];
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if (desc->zero_flag_1 != 0) {
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decode_timing((u8 *)desc, timing);
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if (mode_valid)
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timing_done = mode_valid(mode_valid_priv,
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timing);
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else
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timing_done = true;
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/* Look for detailed timing in CTA-861 Extension Block */
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if (!found && edid->extension_flag && buf_size >= EDID_EXT_SIZE) {
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struct edid_cea861_info *info =
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(struct edid_cea861_info *)(buf + sizeof(*edid));
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if (timing_done)
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break;
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if (info->extension_tag == EDID_CEA861_EXTENSION_TAG) {
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int count = EDID_CEA861_DTD_COUNT(*info);
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int offset = info->dtd_offset;
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int size = count * sizeof(struct edid_detailed_timing);
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if (offset >= 4 && offset + size < EDID_SIZE)
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found = edid_find_valid_timing(
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(u8 *)info + offset, count, timing,
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mode_valid, mode_valid_priv);
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}
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}
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if (!timing_done)
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if (!found)
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return -EINVAL;
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if (!EDID1_INFO_VIDEO_INPUT_DIGITAL(*edid)) {
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debug("%s: Not a digital display\n", __func__);
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return -ENOSYS;
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}
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if (edid->version != 1 || edid->revision < 4) {
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debug("%s: EDID version %d.%d does not have required info\n",
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__func__, edid->version, edid->revision);
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@ -19,8 +19,6 @@
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/display2.h>
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#include <dm/device-internal.h>
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#include <dm/uclass-internal.h>
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#include <linux/bitops.h>
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#include "simplefb_common.h"
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@ -198,13 +196,6 @@ static int sunxi_de2_init(struct udevice *dev, ulong fbbase,
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disp_uc_plat->source_id = mux;
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ret = device_probe(disp);
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if (ret) {
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debug("%s: device '%s' display won't probe (ret=%d)\n",
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__func__, dev->name, ret);
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return ret;
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}
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ret = display_read_timing(disp, &timing);
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if (ret) {
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debug("%s: Failed to read timings\n", __func__);
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@ -245,8 +236,8 @@ static int sunxi_de2_probe(struct udevice *dev)
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if (!(gd->flags & GD_FLG_RELOC))
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return 0;
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ret = uclass_find_device_by_name(UCLASS_DISPLAY,
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"sunxi_lcd", &disp);
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ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
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DM_DRIVER_GET(sunxi_lcd), &disp);
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if (!ret) {
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int mux;
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@ -262,8 +253,8 @@ static int sunxi_de2_probe(struct udevice *dev)
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debug("%s: lcd display not found (ret=%d)\n", __func__, ret);
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ret = uclass_find_device_by_name(UCLASS_DISPLAY,
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"sunxi_dw_hdmi", &disp);
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ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
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DM_DRIVER_GET(sunxi_dw_hdmi), &disp);
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if (!ret) {
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int mux;
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if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5))
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@ -281,20 +272,7 @@ static int sunxi_de2_probe(struct udevice *dev)
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debug("%s: hdmi display not found (ret=%d)\n", __func__, ret);
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ret = uclass_find_device_by_name(UCLASS_DISPLAY,
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"sunxi_tve", &disp);
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if (ret) {
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debug("%s: tv not found (ret=%d)\n", __func__, ret);
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return ret;
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}
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ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, 1, true);
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if (ret)
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return ret;
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video_set_flush_dcache(dev, 1);
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return 0;
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return -ENODEV;
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}
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static int sunxi_de2_bind(struct udevice *dev)
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@ -345,8 +323,8 @@ int sunxi_simplefb_setup(void *blob)
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mux = 1;
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/* Skip simplefb setting if DE2 / HDMI is not present */
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ret = uclass_find_device_by_name(UCLASS_VIDEO,
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"sunxi_de2", &de2);
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ret = uclass_get_device_by_driver(UCLASS_VIDEO,
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DM_DRIVER_GET(sunxi_de2), &de2);
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if (ret) {
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debug("DE2 not present\n");
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return 0;
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@ -355,8 +333,8 @@ int sunxi_simplefb_setup(void *blob)
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return 0;
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}
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ret = uclass_find_device_by_name(UCLASS_DISPLAY,
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"sunxi_dw_hdmi", &hdmi);
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ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
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DM_DRIVER_GET(sunxi_dw_hdmi), &hdmi);
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if (ret) {
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debug("HDMI not present\n");
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} else if (device_active(hdmi)) {
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@ -368,8 +346,8 @@ int sunxi_simplefb_setup(void *blob)
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debug("HDMI present but not probed\n");
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}
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ret = uclass_find_device_by_name(UCLASS_DISPLAY,
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"sunxi_lcd", &lcd);
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ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
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DM_DRIVER_GET(sunxi_lcd), &lcd);
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if (ret)
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debug("LCD not present\n");
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else if (device_active(lcd))
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@ -20,7 +20,6 @@
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struct sunxi_dw_hdmi_priv {
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struct dw_hdmi hdmi;
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int mux;
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};
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struct sunxi_hdmi_phy {
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@ -114,28 +113,6 @@ static void sunxi_dw_hdmi_phy_init(void)
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writel(0x42494E47, &phy->unscramble);
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}
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static int sunxi_dw_hdmi_get_plug_in_status(void)
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{
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struct sunxi_hdmi_phy * const phy =
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(struct sunxi_hdmi_phy *)(SUNXI_HDMI_BASE + HDMI_PHY_OFFS);
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return !!(readl(&phy->status) & (1 << 19));
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}
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static int sunxi_dw_hdmi_wait_for_hpd(void)
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{
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ulong start;
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start = get_timer(0);
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do {
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if (sunxi_dw_hdmi_get_plug_in_status())
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return 0;
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udelay(100);
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} while (get_timer(start) < 300);
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return -1;
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}
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static void sunxi_dw_hdmi_phy_set(uint clock, int phy_div)
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{
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struct sunxi_hdmi_phy * const phy =
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@ -305,11 +282,18 @@ static int sunxi_dw_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size)
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return dw_hdmi_read_edid(&priv->hdmi, buf, buf_size);
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}
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static bool sunxi_dw_hdmi_mode_valid(struct udevice *dev,
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const struct display_timing *timing)
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{
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return timing->pixelclock.typ <= 297000000;
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}
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static int sunxi_dw_hdmi_enable(struct udevice *dev, int panel_bpp,
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const struct display_timing *edid)
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{
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struct sunxi_hdmi_phy * const phy =
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(struct sunxi_hdmi_phy *)(SUNXI_HDMI_BASE + HDMI_PHY_OFFS);
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struct display_plat *uc_plat = dev_get_uclass_plat(dev);
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struct sunxi_dw_hdmi_priv *priv = dev_get_priv(dev);
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int ret;
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@ -317,7 +301,7 @@ static int sunxi_dw_hdmi_enable(struct udevice *dev, int panel_bpp,
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if (ret)
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return ret;
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sunxi_dw_hdmi_lcdc_init(priv->mux, edid, panel_bpp);
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sunxi_dw_hdmi_lcdc_init(uc_plat->source_id, edid, panel_bpp);
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if (edid->flags & DISPLAY_FLAGS_VSYNC_LOW)
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setbits_le32(&phy->pol, 0x200);
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@ -340,7 +324,6 @@ static int sunxi_dw_hdmi_enable(struct udevice *dev, int panel_bpp,
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static int sunxi_dw_hdmi_probe(struct udevice *dev)
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{
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struct display_plat *uc_plat = dev_get_uclass_plat(dev);
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struct sunxi_dw_hdmi_priv *priv = dev_get_priv(dev);
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struct sunxi_ccm_reg * const ccm =
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(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
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@ -364,21 +347,17 @@ static int sunxi_dw_hdmi_probe(struct udevice *dev)
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sunxi_dw_hdmi_phy_init();
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ret = sunxi_dw_hdmi_wait_for_hpd();
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if (ret < 0) {
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debug("hdmi can not get hpd signal\n");
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return -1;
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}
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priv->hdmi.ioaddr = SUNXI_HDMI_BASE;
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priv->hdmi.i2c_clk_high = 0xd8;
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priv->hdmi.i2c_clk_low = 0xfe;
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priv->hdmi.reg_io_width = 1;
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priv->hdmi.phy_set = sunxi_dw_hdmi_phy_cfg;
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priv->mux = uc_plat->source_id;
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uclass_get_device_by_phandle(UCLASS_I2C, dev, "ddc-i2c-bus",
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&priv->hdmi.ddc_bus);
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ret = dw_hdmi_phy_wait_for_hpd(&priv->hdmi);
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if (ret < 0) {
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debug("hdmi can not get hpd signal\n");
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return -1;
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}
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dw_hdmi_init(&priv->hdmi);
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@ -388,6 +367,7 @@ static int sunxi_dw_hdmi_probe(struct udevice *dev)
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static const struct dm_display_ops sunxi_dw_hdmi_ops = {
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.read_edid = sunxi_dw_hdmi_read_edid,
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.enable = sunxi_dw_hdmi_enable,
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.mode_valid = sunxi_dw_hdmi_mode_valid,
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};
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U_BOOT_DRIVER(sunxi_dw_hdmi) = {
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