[PATCH 2/4] drm/bridge: dw-hdmi: add cec notifier support
From: Russell King <hidden>
Date: 2017-05-30 14:23:12
Also in:
dri-devel
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Linus Torvalds
Add CEC notifier support to the HDMI bridge driver, so that the CEC part of the IP can receive its physical address. Signed-off-by: Russell King <redacted> --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 4e1f54a675d8..966422576c44 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c@@ -36,7 +36,10 @@ #include "dw-hdmi.h" #include "dw-hdmi-audio.h" +#include <media/cec-notifier.h> + #define DDC_SEGMENT_ADDR 0x30 + #define HDMI_EDID_LEN 512 enum hdmi_datamap {
@@ -173,6 +176,8 @@ struct dw_hdmi { unsigned int reg_shift; struct regmap *regm; + + struct cec_notifier *cec_notifier; }; #define HDMI_IH_PHY_STAT0_RX_SENSE \
@@ -1870,6 +1875,7 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector) hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid); hdmi->sink_has_audio = drm_detect_monitor_audio(edid); drm_mode_connector_update_edid_property(connector, edid); + cec_notifier_set_phys_addr_from_edid(hdmi->cec_notifier, edid); ret = drm_add_edid_modes(connector, edid); /* Store the ELD */ drm_edid_to_eld(connector, edid);
@@ -2108,11 +2114,16 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) * ask the source to re-read the EDID. */ if (intr_stat & - (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) + (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) { __dw_hdmi_setup_rx_sense(hdmi, phy_stat & HDMI_PHY_HPD, phy_stat & HDMI_PHY_RX_SENSE); + if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) + cec_notifier_set_phys_addr(hdmi->cec_notifier, + CEC_PHYS_ADDR_INVALID); + } + if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { dev_dbg(hdmi->dev, "EVENT=%s\n", phy_int_pol & HDMI_PHY_HPD ? "plugin" : "plugout");
@@ -2365,6 +2376,12 @@ __dw_hdmi_probe(struct platform_device *pdev, if (ret) goto err_iahb; + hdmi->cec_notifier = cec_notifier_get(dev); + if (!hdmi->cec_notifier) { + ret = -ENOMEM; + goto err_iahb; + } + /* * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator * N and cts values before enabling phy
@@ -2437,6 +2454,9 @@ __dw_hdmi_probe(struct platform_device *pdev, hdmi->ddc = NULL; } + if (hdmi->cec_notifier) + cec_notifier_put(hdmi->cec_notifier); + clk_disable_unprepare(hdmi->iahb_clk); err_isfr: clk_disable_unprepare(hdmi->isfr_clk);
--
2.7.4