diff options
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimd.c | 135 |
1 files changed, 77 insertions, 58 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 324055f..b5bd16c 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -196,6 +196,62 @@ static inline struct fimd_driver_data *drm_fimd_get_driver_data( return (struct fimd_driver_data *)of_id->data; } +static int fimd_enable_vblank(struct exynos_drm_crtc *crtc) +{ + struct fimd_context *ctx = crtc->ctx; + u32 val; + + if (ctx->suspended) + return -EPERM; + + if (!test_and_set_bit(0, &ctx->irq_flags)) { + val = readl(ctx->regs + VIDINTCON0); + + val |= VIDINTCON0_INT_ENABLE; + + if (ctx->i80_if) { + val |= VIDINTCON0_INT_I80IFDONE; + val |= VIDINTCON0_INT_SYSMAINCON; + val &= ~VIDINTCON0_INT_SYSSUBCON; + } else { + val |= VIDINTCON0_INT_FRAME; + + val &= ~VIDINTCON0_FRAMESEL0_MASK; + val |= VIDINTCON0_FRAMESEL0_VSYNC; + val &= ~VIDINTCON0_FRAMESEL1_MASK; + val |= VIDINTCON0_FRAMESEL1_NONE; + } + + writel(val, ctx->regs + VIDINTCON0); + } + + return 0; +} + +static void fimd_disable_vblank(struct exynos_drm_crtc *crtc) +{ + struct fimd_context *ctx = crtc->ctx; + u32 val; + + if (ctx->suspended) + return; + + if (test_and_clear_bit(0, &ctx->irq_flags)) { + val = readl(ctx->regs + VIDINTCON0); + + val &= ~VIDINTCON0_INT_ENABLE; + + if (ctx->i80_if) { + val &= ~VIDINTCON0_INT_I80IFDONE; + val &= ~VIDINTCON0_INT_SYSMAINCON; + val &= ~VIDINTCON0_INT_SYSSUBCON; + } else + val &= ~VIDINTCON0_INT_FRAME; + + writel(val, ctx->regs + VIDINTCON0); + } +} + static void fimd_wait_for_vblank(struct exynos_drm_crtc *crtc) { struct fimd_context *ctx = crtc->ctx; @@ -248,6 +304,12 @@ static void fimd_clear_channel(struct fimd_context *ctx) DRM_DEBUG_KMS("%s\n", __FILE__); + /* Hardware is in unknown state, so ensure it gets enabled properly */ + pm_runtime_get_sync(ctx->dev); + + clk_prepare_enable(ctx->bus_clk); + clk_prepare_enable(ctx->lcd_clk); + /* Check if any channel is enabled. */ for (win = 0; win < WINDOWS_NR; win++) { u32 val = readl(ctx->regs + WINCON(win)); @@ -265,12 +327,24 @@ static void fimd_clear_channel(struct fimd_context *ctx) /* Wait for vsync, as disable channel takes effect at next vsync */ if (ch_enabled) { - unsigned int state = ctx->suspended; + int pipe = ctx->pipe; + + /* ensure that vblank interrupt won't be reported to core */ + ctx->suspended = false; + ctx->pipe = -1; - ctx->suspended = 0; + fimd_enable_vblank(ctx->crtc); fimd_wait_for_vblank(ctx->crtc); - ctx->suspended = state; + fimd_disable_vblank(ctx->crtc); + + ctx->suspended = true; + ctx->pipe = pipe; } + + clk_disable_unprepare(ctx->lcd_clk); + clk_disable_unprepare(ctx->bus_clk); + + pm_runtime_put(ctx->dev); } static int fimd_iommu_attach_devices(struct fimd_context *ctx, @@ -434,61 +508,6 @@ static void fimd_commit(struct exynos_drm_crtc *crtc) writel(val, ctx->regs + VIDCON0); } -static int fimd_enable_vblank(struct exynos_drm_crtc *crtc) -{ - struct fimd_context *ctx = crtc->ctx; - u32 val; - - if (ctx->suspended) - return -EPERM; - - if (!test_and_set_bit(0, &ctx->irq_flags)) { - val = readl(ctx->regs + VIDINTCON0); - - val |= VIDINTCON0_INT_ENABLE; - - if (ctx->i80_if) { - val |= VIDINTCON0_INT_I80IFDONE; - val |= VIDINTCON0_INT_SYSMAINCON; - val &= ~VIDINTCON0_INT_SYSSUBCON; - } else { - val |= VIDINTCON0_INT_FRAME; - - val &= ~VIDINTCON0_FRAMESEL0_MASK; - val |= VIDINTCON0_FRAMESEL0_VSYNC; - val &= ~VIDINTCON0_FRAMESEL1_MASK; - val |= VIDINTCON0_FRAMESEL1_NONE; - } - - writel(val, ctx->regs + VIDINTCON0); - } - - return 0; -} - -static void fimd_disable_vblank(struct exynos_drm_crtc *crtc) -{ - struct fimd_context *ctx = crtc->ctx; - u32 val; - - if (ctx->suspended) - return; - - if (test_and_clear_bit(0, &ctx->irq_flags)) { - val = readl(ctx->regs + VIDINTCON0); - - val &= ~VIDINTCON0_INT_ENABLE; - - if (ctx->i80_if) { - val &= ~VIDINTCON0_INT_I80IFDONE; - val &= ~VIDINTCON0_INT_SYSMAINCON; - val &= ~VIDINTCON0_INT_SYSSUBCON; - } else - val &= ~VIDINTCON0_INT_FRAME; - - writel(val, ctx->regs + VIDINTCON0); - } -} static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win) { |
