diff options
Diffstat (limited to 'drivers/gpu/drm/msm/hdmi/hdmi_bridge.c')
-rw-r--r-- | drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 81 |
1 files changed, 74 insertions, 7 deletions
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index f04eb4a70f0d..211b73dddf65 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -5,17 +5,16 @@ */ #include <linux/delay.h> +#include <drm/drm_bridge_connector.h> +#include "msm_kms.h" #include "hdmi.h" -struct hdmi_bridge { - struct drm_bridge base; - struct hdmi *hdmi; -}; -#define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base) - void msm_hdmi_bridge_destroy(struct drm_bridge *bridge) { + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); + + msm_hdmi_hpd_disable(hdmi_bridge); } static void msm_hdmi_power_on(struct drm_bridge *bridge) @@ -251,14 +250,76 @@ static void msm_hdmi_bridge_mode_set(struct drm_bridge *bridge, msm_hdmi_audio_update(hdmi); } +static struct edid *msm_hdmi_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); + struct hdmi *hdmi = hdmi_bridge->hdmi; + struct edid *edid; + uint32_t hdmi_ctrl; + + hdmi_ctrl = hdmi_read(hdmi, REG_HDMI_CTRL); + hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl | HDMI_CTRL_ENABLE); + + edid = drm_get_edid(connector, hdmi->i2c); + + hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl); + + hdmi->hdmi_mode = drm_detect_hdmi_monitor(edid); + + return edid; +} + +static enum drm_mode_status msm_hdmi_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); + struct hdmi *hdmi = hdmi_bridge->hdmi; + const struct hdmi_platform_config *config = hdmi->config; + struct msm_drm_private *priv = bridge->dev->dev_private; + struct msm_kms *kms = priv->kms; + long actual, requested; + + requested = 1000 * mode->clock; + actual = kms->funcs->round_pixclk(kms, + requested, hdmi_bridge->hdmi->encoder); + + /* for mdp5/apq8074, we manage our own pixel clk (as opposed to + * mdp4/dtv stuff where pixel clk is assigned to mdp/encoder + * instead): + */ + if (config->pwr_clk_cnt > 0) + actual = clk_round_rate(hdmi->pwr_clks[0], actual); + + DBG("requested=%ld, actual=%ld", requested, actual); + + if (actual != requested) + return MODE_CLOCK_RANGE; + + return 0; +} + static const struct drm_bridge_funcs msm_hdmi_bridge_funcs = { .pre_enable = msm_hdmi_bridge_pre_enable, .enable = msm_hdmi_bridge_enable, .disable = msm_hdmi_bridge_disable, .post_disable = msm_hdmi_bridge_post_disable, .mode_set = msm_hdmi_bridge_mode_set, + .mode_valid = msm_hdmi_bridge_mode_valid, + .get_edid = msm_hdmi_bridge_get_edid, + .detect = msm_hdmi_bridge_detect, }; +static void +msm_hdmi_hotplug_work(struct work_struct *work) +{ + struct hdmi_bridge *hdmi_bridge = + container_of(work, struct hdmi_bridge, hpd_work); + struct drm_bridge *bridge = &hdmi_bridge->base; + + drm_bridge_hpd_notify(bridge, drm_bridge_detect(bridge)); +} /* initialize bridge */ struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi) @@ -275,11 +336,17 @@ struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi) } hdmi_bridge->hdmi = hdmi; + INIT_WORK(&hdmi_bridge->hpd_work, msm_hdmi_hotplug_work); bridge = &hdmi_bridge->base; bridge->funcs = &msm_hdmi_bridge_funcs; + bridge->ddc = hdmi->i2c; + bridge->type = DRM_MODE_CONNECTOR_HDMIA; + bridge->ops = DRM_BRIDGE_OP_HPD | + DRM_BRIDGE_OP_DETECT | + DRM_BRIDGE_OP_EDID; - ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, 0); + ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); if (ret) goto fail; |