mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 17:20:02 +07:00
9960aa7cb5
Now that omapfb has its own copy of omapdss and display drivers, we can move omapdss and display drivers which omapdrm uses to omapdrm's directory. We also need to change the main drm Makefile so that omapdrm directory is always entered, because omapdss has a file that can't be built as a module. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Dave Airlie <airlied@gmail.com> Acked-by: Rob Clark <robdclark@gmail.com>
149 lines
2.7 KiB
C
149 lines
2.7 KiB
C
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#define DSS_SUBSYS_NAME "HDMI"
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/of.h>
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#include <video/omapdss.h>
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#include "hdmi.h"
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int hdmi_parse_lanes_of(struct platform_device *pdev, struct device_node *ep,
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struct hdmi_phy_data *phy)
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{
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struct property *prop;
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int r, len;
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prop = of_find_property(ep, "lanes", &len);
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if (prop) {
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u32 lanes[8];
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if (len / sizeof(u32) != ARRAY_SIZE(lanes)) {
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dev_err(&pdev->dev, "bad number of lanes\n");
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return -EINVAL;
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}
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r = of_property_read_u32_array(ep, "lanes", lanes,
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ARRAY_SIZE(lanes));
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if (r) {
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dev_err(&pdev->dev, "failed to read lane data\n");
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return r;
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}
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r = hdmi_phy_parse_lanes(phy, lanes);
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if (r) {
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dev_err(&pdev->dev, "failed to parse lane data\n");
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return r;
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}
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} else {
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static const u32 default_lanes[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
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r = hdmi_phy_parse_lanes(phy, default_lanes);
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if (WARN_ON(r)) {
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dev_err(&pdev->dev, "failed to parse lane data\n");
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return r;
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}
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}
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return 0;
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}
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int hdmi_compute_acr(u32 pclk, u32 sample_freq, u32 *n, u32 *cts)
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{
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u32 deep_color;
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bool deep_color_correct = false;
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if (n == NULL || cts == NULL)
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return -EINVAL;
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/* TODO: When implemented, query deep color mode here. */
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deep_color = 100;
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/*
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* When using deep color, the default N value (as in the HDMI
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* specification) yields to an non-integer CTS. Hence, we
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* modify it while keeping the restrictions described in
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* section 7.2.1 of the HDMI 1.4a specification.
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*/
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switch (sample_freq) {
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case 32000:
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case 48000:
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case 96000:
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case 192000:
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if (deep_color == 125)
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if (pclk == 27027000 || pclk == 74250000)
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deep_color_correct = true;
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if (deep_color == 150)
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if (pclk == 27027000)
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deep_color_correct = true;
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break;
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case 44100:
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case 88200:
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case 176400:
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if (deep_color == 125)
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if (pclk == 27027000)
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deep_color_correct = true;
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break;
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default:
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return -EINVAL;
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}
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if (deep_color_correct) {
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switch (sample_freq) {
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case 32000:
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*n = 8192;
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break;
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case 44100:
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*n = 12544;
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break;
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case 48000:
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*n = 8192;
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break;
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case 88200:
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*n = 25088;
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break;
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case 96000:
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*n = 16384;
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break;
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case 176400:
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*n = 50176;
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break;
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case 192000:
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*n = 32768;
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break;
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default:
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return -EINVAL;
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}
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} else {
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switch (sample_freq) {
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case 32000:
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*n = 4096;
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break;
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case 44100:
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*n = 6272;
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break;
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case 48000:
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*n = 6144;
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break;
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case 88200:
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*n = 12544;
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break;
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case 96000:
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*n = 12288;
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break;
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case 176400:
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*n = 25088;
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break;
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case 192000:
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*n = 24576;
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break;
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default:
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return -EINVAL;
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}
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}
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/* Calculate CTS. See HDMI 1.3a or 1.4a specifications */
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*cts = (pclk/1000) * (*n / 128) * deep_color / (sample_freq / 10);
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return 0;
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}
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