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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-30 08:49:12 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-30 08:49:12 +0400
commit9b0cd304f26b9fca140de15deeac2bf357d1f388 (patch)
tree03a0d74614865a5b776b2a98a433232013b1d369 /drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
parentca2a650f3dfdc30d71d21bcbb04d2d057779f3f9 (diff)
parentef64cf9d06049e4e9df661f3be60b217e476bee1 (diff)
downloadlinux-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.c71
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,