[src/trunk]: src/sys/arch/arm/nvidia extract physical address from HDMI VDSB ...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8d09afb09a09
branches:  trunk
changeset: 339629:8d09afb09a09
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Fri Jul 31 23:07:14 2015 +0000

description:
extract physical address from HDMI VDSB and make it available as the "physical-address" device property

diffstat:

 sys/arch/arm/nvidia/tegra_hdmi.c |  19 ++++++++++++++++---
 1 files changed, 16 insertions(+), 3 deletions(-)

diffs (66 lines):

diff -r 976a53043020 -r 8d09afb09a09 sys/arch/arm/nvidia/tegra_hdmi.c
--- a/sys/arch/arm/nvidia/tegra_hdmi.c  Fri Jul 31 15:00:07 2015 +0000
+++ b/sys/arch/arm/nvidia/tegra_hdmi.c  Fri Jul 31 23:07:14 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_hdmi.c,v 1.8 2015/07/26 15:12:03 jmcneill Exp $ */
+/* $NetBSD: tegra_hdmi.c,v 1.9 2015/07/31 23:07:14 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
 #include "locators.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_hdmi.c,v 1.8 2015/07/26 15:12:03 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_hdmi.c,v 1.9 2015/07/31 23:07:14 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -47,6 +47,8 @@
 #include <arm/nvidia/tegra_hdmireg.h>
 #include <arm/nvidia/tegra_var.h>
 
+#define PROP_PHYSICAL_ADDRESS  "physical-address"
+
 static int     tegra_hdmi_match(device_t, cfdata_t, void *);
 static void    tegra_hdmi_attach(device_t, device_t, void *);
 
@@ -243,6 +245,9 @@
 static void
 tegra_hdmi_disconnect(struct tegra_hdmi_softc *sc)
 {
+       prop_dictionary_t cfg = device_properties(sc->sc_dev);
+
+       prop_dictionary_remove(cfg, PROP_PHYSICAL_ADDRESS);
 }
 
 static void
@@ -441,9 +446,11 @@
 static bool
 tegra_hdmi_is_hdmi(struct tegra_hdmi_softc *sc, const struct edid_info *ei)
 {
+       prop_dictionary_t cfg = device_properties(sc->sc_dev);
        char edid[128];
        bool found_hdmi = false;
        unsigned int n, p;
+       uint16_t phys_addr;
 
        /*
         * Scan through extension blocks, looking for a CEA-861-D v3
@@ -486,9 +493,15 @@
                                goto next_block;
 
                        /* HDMI 24-bit IEEE registration ID is 0x000C03 */
-                       if (memcmp(&edid[p + 1], "\x03\x0c\x00", 3) == 0)
+                       if (memcmp(&edid[p + 1], "\x03\x0c\x00", 3) == 0) {
                                found_hdmi = true;
 
+                               phys_addr = (edid[p + 4] << 8) | edid[p + 5];
+
+                               prop_dictionary_set_uint16(cfg,
+                                   PROP_PHYSICAL_ADDRESS, phys_addr);
+                       }
+
 next_block:
                        p += (1 + blen);
                }