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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-30 08:49:12 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-30 08:49:12 +0400 |
commit | 9b0cd304f26b9fca140de15deeac2bf357d1f388 (patch) | |
tree | 03a0d74614865a5b776b2a98a433232013b1d369 /drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | |
parent | ca2a650f3dfdc30d71d21bcbb04d2d057779f3f9 (diff) | |
parent | ef64cf9d06049e4e9df661f3be60b217e476bee1 (diff) | |
download | linux-9b0cd304f26b9fca140de15deeac2bf357d1f388.tar.xz |
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"Been a bit busy, first week of kids school, and waiting on other trees
to go in before I could send this, so its a bit later than I'd
normally like.
Highlights:
- core:
timestamp fixes, lots of misc cleanups
- new drivers:
bochs virtual vga
- vmwgfx:
major overhaul for their nextgen virt gpu.
- i915:
runtime D3 on HSW, watermark fixes, power well work, fbc fixes,
bdw is no longer prelim.
- nouveau:
gk110/208 acceleration, more pm groundwork, old overlay support
- radeon:
dpm rework and clockgating for CIK, pci config reset, big endian
fixes
- tegra:
panel support and DSI support, build as module, prime.
- armada, omap, gma500, rcar, exynos, mgag200, cirrus, ast:
fixes
- msm:
hdmi support for mdp5"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (595 commits)
drm/nouveau: resume display if any later suspend bits fail
drm/nouveau: fix lock unbalance in nouveau_crtc_page_flip
drm/nouveau: implement hooks for needed for drm vblank timestamping support
drm/nouveau/disp: add a method to fetch info needed by drm vblank timestamping
drm/nv50: fill in crtc mode struct members from crtc_mode_fixup
drm/radeon/dce8: workaround for atom BlankCrtc table
drm/radeon/DCE4+: clear bios scratch dpms bit (v2)
drm/radeon: set si_notify_smc_display_change properly
drm/radeon: fix DAC interrupt handling on DCE5+
drm/radeon: clean up active vram sizing
drm/radeon: skip async dma init on r6xx
drm/radeon/runpm: don't runtime suspend non-PX cards
drm/radeon: add ring to fence trace functions
drm/radeon: add missing trace point
drm/radeon: fix VMID use tracking
drm: ast,cirrus,mgag200: use drm_can_sleep
drm/gma500: Lock struct_mutex around cursor updates
drm/i915: Fix the offset issue for the stolen GEM objects
DRM: armada: fix missing DRM_KMS_FB_HELPER select
drm/i915: Decouple GPU error reporting from ring initialisation
...
Diffstat (limited to 'drivers/gpu/drm/msm/hdmi/hdmi_bridge.c')
-rw-r--r-- | drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index 5a8ee3473cf5..7d10e55403c6 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -21,6 +21,7 @@ struct hdmi_bridge { struct drm_bridge base; struct hdmi *hdmi; + bool power_on; unsigned long int pixclock; }; @@ -34,6 +35,65 @@ static void hdmi_bridge_destroy(struct drm_bridge *bridge) kfree(hdmi_bridge); } +static void power_on(struct drm_bridge *bridge) +{ + struct drm_device *dev = bridge->dev; + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); + struct hdmi *hdmi = hdmi_bridge->hdmi; + const struct hdmi_platform_config *config = hdmi->config; + int i, ret; + + for (i = 0; i < config->pwr_reg_cnt; i++) { + ret = regulator_enable(hdmi->pwr_regs[i]); + if (ret) { + dev_err(dev->dev, "failed to enable pwr regulator: %s (%d)\n", + config->pwr_reg_names[i], ret); + } + } + + if (config->pwr_clk_cnt > 0) { + DBG("pixclock: %lu", hdmi_bridge->pixclock); + ret = clk_set_rate(hdmi->pwr_clks[0], hdmi_bridge->pixclock); + if (ret) { + dev_err(dev->dev, "failed to set pixel clk: %s (%d)\n", + config->pwr_clk_names[0], ret); + } + } + + for (i = 0; i < config->pwr_clk_cnt; i++) { + ret = clk_prepare_enable(hdmi->pwr_clks[i]); + if (ret) { + dev_err(dev->dev, "failed to enable pwr clk: %s (%d)\n", + config->pwr_clk_names[i], ret); + } + } +} + +static void power_off(struct drm_bridge *bridge) +{ + struct drm_device *dev = bridge->dev; + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); + struct hdmi *hdmi = hdmi_bridge->hdmi; + const struct hdmi_platform_config *config = hdmi->config; + int i, ret; + + /* TODO do we need to wait for final vblank somewhere before + * cutting the clocks? + */ + mdelay(16 + 4); + + for (i = 0; i < config->pwr_clk_cnt; i++) + clk_disable_unprepare(hdmi->pwr_clks[i]); + + for (i = 0; i < config->pwr_reg_cnt; i++) { + ret = regulator_disable(hdmi->pwr_regs[i]); + if (ret) { + dev_err(dev->dev, "failed to disable pwr regulator: %s (%d)\n", + config->pwr_reg_names[i], ret); + } + } +} + static void hdmi_bridge_pre_enable(struct drm_bridge *bridge) { struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); @@ -41,6 +101,12 @@ static void hdmi_bridge_pre_enable(struct drm_bridge *bridge) struct hdmi_phy *phy = hdmi->phy; DBG("power up"); + + if (!hdmi_bridge->power_on) { + power_on(bridge); + hdmi_bridge->power_on = true; + } + phy->funcs->powerup(phy, hdmi_bridge->pixclock); hdmi_set_mode(hdmi, true); } @@ -62,6 +128,11 @@ static void hdmi_bridge_post_disable(struct drm_bridge *bridge) DBG("power down"); hdmi_set_mode(hdmi, false); phy->funcs->powerdown(phy); + + if (hdmi_bridge->power_on) { + power_off(bridge); + hdmi_bridge->power_on = false; + } } static void hdmi_bridge_mode_set(struct drm_bridge *bridge, |