diff options
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 62 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 26 |
3 files changed, 55 insertions, 36 deletions
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 5292b28..7699597 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -851,47 +851,40 @@ static void analogix_dp_enable_scramble(struct analogix_dp_device *dp, } } -static irqreturn_t analogix_dp_irq_handler(int irq, void *arg) +static irqreturn_t analogix_dp_hardirq(int irq, void *arg) { struct analogix_dp_device *dp = arg; - + irqreturn_t ret = IRQ_NONE; enum dp_irq_type irq_type; irq_type = analogix_dp_get_irq_type(dp); - switch (irq_type) { - case DP_IRQ_TYPE_HP_CABLE_IN: - dev_dbg(dp->dev, "Received irq - cable in\n"); - schedule_work(&dp->hotplug_work); - analogix_dp_clear_hotplug_interrupts(dp); - break; - case DP_IRQ_TYPE_HP_CABLE_OUT: - dev_dbg(dp->dev, "Received irq - cable out\n"); - analogix_dp_clear_hotplug_interrupts(dp); - break; - case DP_IRQ_TYPE_HP_CHANGE: - /* - * We get these change notifications once in a while, but there - * is nothing we can do with them. Just ignore it for now and - * only handle cable changes. - */ - dev_dbg(dp->dev, "Received irq - hotplug change; ignoring.\n"); - analogix_dp_clear_hotplug_interrupts(dp); - break; - default: - dev_err(dp->dev, "Received irq - unknown type!\n"); - break; + if (irq_type != DP_IRQ_TYPE_UNKNOWN) { + analogix_dp_mute_hpd_interrupt(dp); + ret = IRQ_WAKE_THREAD; } - return IRQ_HANDLED; + + return ret; } -static void analogix_dp_hotplug(struct work_struct *work) +static irqreturn_t analogix_dp_irq_thread(int irq, void *arg) { - struct analogix_dp_device *dp; + struct analogix_dp_device *dp = arg; + enum dp_irq_type irq_type; + + irq_type = analogix_dp_get_irq_type(dp); + if (irq_type & DP_IRQ_TYPE_HP_CABLE_IN || + irq_type & DP_IRQ_TYPE_HP_CABLE_OUT) { + dev_dbg(dp->dev, "Detected cable status changed!\n"); + if (dp->drm_dev) + drm_helper_hpd_irq_event(dp->drm_dev); + } - dp = container_of(work, struct analogix_dp_device, hotplug_work); + if (irq_type != DP_IRQ_TYPE_UNKNOWN) { + analogix_dp_clear_hotplug_interrupts(dp); + analogix_dp_unmute_hpd_interrupt(dp); + } - if (dp->drm_dev) - drm_helper_hpd_irq_event(dp->drm_dev); + return IRQ_HANDLED; } static void analogix_dp_commit(struct analogix_dp_device *dp) @@ -1077,7 +1070,6 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge) } disable_irq(dp->irq); - flush_work(&dp->hotplug_work); phy_power_off(dp->phy); if (dp->plat_data->power_off) @@ -1336,8 +1328,6 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, return -ENODEV; } - INIT_WORK(&dp->hotplug_work, analogix_dp_hotplug); - pm_runtime_enable(dev); phy_power_on(dp->phy); @@ -1351,8 +1341,10 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, analogix_dp_init_dp(dp); - ret = devm_request_irq(&pdev->dev, dp->irq, analogix_dp_irq_handler, - irq_flags, "analogix-dp", dp); + ret = devm_request_threaded_irq(&pdev->dev, dp->irq, + analogix_dp_hardirq, + analogix_dp_irq_thread, + irq_flags, "analogix-dp", dp); if (ret) { dev_err(&pdev->dev, "failed to request irq\n"); goto err_disable_pm_runtime; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h index 48b4a87..f09275d 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -172,7 +172,6 @@ struct analogix_dp_device { struct video_info video_info; struct link_train link_train; - struct work_struct hotplug_work; struct phy *phy; int dpms_mode; int hpd_gpio; @@ -191,6 +190,8 @@ void analogix_dp_init_interrupt(struct analogix_dp_device *dp); void analogix_dp_reset(struct analogix_dp_device *dp); void analogix_dp_swreset(struct analogix_dp_device *dp); void analogix_dp_config_interrupt(struct analogix_dp_device *dp); +void analogix_dp_mute_hpd_interrupt(struct analogix_dp_device *dp); +void analogix_dp_unmute_hpd_interrupt(struct analogix_dp_device *dp); enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp); void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable); void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp, diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index cba3ffd..49205ef 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -185,6 +185,32 @@ void analogix_dp_config_interrupt(struct analogix_dp_device *dp) writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK); } +void analogix_dp_mute_hpd_interrupt(struct analogix_dp_device *dp) +{ + u32 reg; + + /* 0: mask, 1: unmask */ + reg = readl(dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4); + reg &= ~COMMON_INT_MASK_4; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4); + + reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA_MASK); + reg &= ~INT_STA_MASK; + writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK); +} + +void analogix_dp_unmute_hpd_interrupt(struct analogix_dp_device *dp) +{ + u32 reg; + + /* 0: mask, 1: unmask */ + reg = COMMON_INT_MASK_4; + writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4); + + reg = INT_STA_MASK; + writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK); +} + enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp) { u32 reg; |