[src/trunk]: src/sys/arch/arm/nvidia support disabling the HDMI output

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

details:   https://anonhg.NetBSD.org/src/rev/2385dd3fd5ce
branches:  trunk
changeset: 341523:2385dd3fd5ce
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Nov 10 00:33:39 2015 +0000

description:
support disabling the HDMI output

diffstat:

 sys/arch/arm/nvidia/tegra_drm_mode.c |  21 +++++++++++++++++++--
 sys/arch/arm/nvidia/tegra_hdmireg.h  |   6 +++++-
 2 files changed, 24 insertions(+), 3 deletions(-)

diffs (63 lines):

diff -r 50b463d7fadf -r 2385dd3fd5ce sys/arch/arm/nvidia/tegra_drm_mode.c
--- a/sys/arch/arm/nvidia/tegra_drm_mode.c      Tue Nov 10 00:04:04 2015 +0000
+++ b/sys/arch/arm/nvidia/tegra_drm_mode.c      Tue Nov 10 00:33:39 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_drm_mode.c,v 1.2 2015/11/10 00:04:04 jmcneill Exp $ */
+/* $NetBSD: tegra_drm_mode.c,v 1.3 2015/11/10 00:33:39 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_drm_mode.c,v 1.2 2015/11/10 00:04:04 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_drm_mode.c,v 1.3 2015/11/10 00:33:39 jmcneill Exp $");
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
@@ -548,6 +548,23 @@
 static void
 tegra_encoder_dpms(struct drm_encoder *encoder, int mode)
 {
+       struct tegra_encoder *tegra_encoder = to_tegra_encoder(encoder);
+
+       if (encoder->crtc == NULL)
+               return;
+
+       switch (mode) {
+       case DRM_MODE_DPMS_ON:
+       case DRM_MODE_DPMS_STANDBY:
+       case DRM_MODE_DPMS_SUSPEND:
+               HDMI_SET_CLEAR(tegra_encoder, HDMI_NV_PDISP_SOR_BLANK_REG,
+                   0, HDMI_NV_PDISP_SOR_BLANK_OVERRIDE);
+               break;
+       case DRM_MODE_DPMS_OFF:
+               HDMI_SET_CLEAR(tegra_encoder, HDMI_NV_PDISP_SOR_BLANK_REG,
+                   HDMI_NV_PDISP_SOR_BLANK_OVERRIDE, 0);
+               break;
+       }
 }
 
 static bool
diff -r 50b463d7fadf -r 2385dd3fd5ce sys/arch/arm/nvidia/tegra_hdmireg.h
--- a/sys/arch/arm/nvidia/tegra_hdmireg.h       Tue Nov 10 00:04:04 2015 +0000
+++ b/sys/arch/arm/nvidia/tegra_hdmireg.h       Tue Nov 10 00:33:39 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_hdmireg.h,v 1.4 2015/07/25 15:50:42 jmcneill Exp $ */
+/* $NetBSD: tegra_hdmireg.h,v 1.5 2015/11/10 00:33:46 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -239,7 +239,11 @@
 #define HDMI_NV_PDISP_SOR_LVDS_REG                             0x16c
 #define HDMI_NV_PDISP_SOR_CRCA_REG                             0x170
 #define HDMI_NV_PDISP_SOR_CRCB_REG                             0x174
+
 #define HDMI_NV_PDISP_SOR_BLANK_REG                            0x178
+#define HDMI_NV_PDISP_SOR_BLANK_STATUS                         __BIT(2)
+#define HDMI_NV_PDISP_SOR_BLANK_TRANSITION                     __BIT(1)
+#define HDMI_NV_PDISP_SOR_BLANK_OVERRIDE                       __BIT(0)
 
 #define HDMI_NV_PDISP_SOR_SEQ_CTL_REG                          0x17c
 #define HDMI_NV_PDISP_SOR_SEQ_CTL_SWITCH                       __BIT(30)