diff options
Diffstat (limited to 'drivers/video/exynos/exynos_dp_reg.c')
| -rw-r--r-- | drivers/video/exynos/exynos_dp_reg.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/drivers/video/exynos/exynos_dp_reg.c b/drivers/video/exynos/exynos_dp_reg.c index fc19ef651565..9fb901bcdd59 100644 --- a/drivers/video/exynos/exynos_dp_reg.c +++ b/drivers/video/exynos/exynos_dp_reg.c @@ -19,11 +19,11 @@ #include "exynos_dp_core.h" #include "exynos_dp_reg.h" -#define COMMON_INT_MASK_1 (0) -#define COMMON_INT_MASK_2 (0) -#define COMMON_INT_MASK_3 (0) -#define COMMON_INT_MASK_4 (0) -#define INT_STA_MASK (0) +#define COMMON_INT_MASK_1 0 +#define COMMON_INT_MASK_2 0 +#define COMMON_INT_MASK_3 0 +#define COMMON_INT_MASK_4 (HOTPLUG_CHG | HPD_LOST | PLUG) +#define INT_STA_MASK INT_HPD void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable) { @@ -324,7 +324,7 @@ void exynos_dp_init_analog_func(struct exynos_dp_device *dp) writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2); } -void exynos_dp_init_hpd(struct exynos_dp_device *dp) +void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp) { u32 reg; @@ -333,12 +333,38 @@ void exynos_dp_init_hpd(struct exynos_dp_device *dp) reg = INT_HPD; writel(reg, dp->reg_base + EXYNOS_DP_INT_STA); +} + +void exynos_dp_init_hpd(struct exynos_dp_device *dp) +{ + u32 reg; + + exynos_dp_clear_hotplug_interrupts(dp); reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3); reg &= ~(F_HPD | HPD_CTRL); writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3); } +enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp) +{ + u32 reg; + + /* Parse hotplug interrupt status register */ + reg = readl(dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4); + + if (reg & PLUG) + return DP_IRQ_TYPE_HP_CABLE_IN; + + if (reg & HPD_LOST) + return DP_IRQ_TYPE_HP_CABLE_OUT; + + if (reg & HOTPLUG_CHG) + return DP_IRQ_TYPE_HP_CHANGE; + + return DP_IRQ_TYPE_UNKNOWN; +} + void exynos_dp_reset_aux(struct exynos_dp_device *dp) { u32 reg; |