summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/tidss/tidss_irq.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/tidss/tidss_irq.h')
-rw-r--r--drivers/gpu/drm/tidss/tidss_irq.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tidss/tidss_irq.h b/drivers/gpu/drm/tidss/tidss_irq.h
new file mode 100644
index 000000000000..aa92db403cca
--- /dev/null
+++ b/drivers/gpu/drm/tidss/tidss_irq.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
+ */
+
+#ifndef __TIDSS_IRQ_H__
+#define __TIDSS_IRQ_H__
+
+#include <linux/types.h>
+
+#include "tidss_drv.h"
+
+/*
+ * The IRQ status from various DISPC IRQ registers are packed into a single
+ * value, where the bits are defined as follows:
+ *
+ * bit group |dev|wb |mrg0|mrg1|mrg2|mrg3|plane0-3| <unused> |
+ * bit use |D |fou|FEOL|FEOL|FEOL|FEOL| UUUU | |
+ * bit number|0 |1-3|4-7 |8-11| 12-19 | 20-23 | 24-31 |
+ *
+ * device bits: D = OCP error
+ * WB bits: f = frame done wb, o = wb buffer overflow,
+ * u = wb buffer uncomplete
+ * vp bits: F = frame done, E = vsync even, O = vsync odd, L = sync lost
+ * plane bits: U = fifo underflow
+ */
+
+#define DSS_IRQ_DEVICE_OCP_ERR BIT(0)
+
+#define DSS_IRQ_DEVICE_FRAMEDONEWB BIT(1)
+#define DSS_IRQ_DEVICE_WBBUFFEROVERFLOW BIT(2)
+#define DSS_IRQ_DEVICE_WBUNCOMPLETEERROR BIT(3)
+#define DSS_IRQ_DEVICE_WB_MASK GENMASK(3, 1)
+
+#define DSS_IRQ_VP_BIT_N(ch, bit) (4 + 4 * (ch) + (bit))
+#define DSS_IRQ_PLANE_BIT_N(plane, bit) \
+ (DSS_IRQ_VP_BIT_N(TIDSS_MAX_PORTS, 0) + 1 * (plane) + (bit))
+
+#define DSS_IRQ_VP_BIT(ch, bit) BIT(DSS_IRQ_VP_BIT_N((ch), (bit)))
+#define DSS_IRQ_PLANE_BIT(plane, bit) \
+ BIT(DSS_IRQ_PLANE_BIT_N((plane), (bit)))
+
+static inline dispc_irq_t DSS_IRQ_VP_MASK(u32 ch)
+{
+ return GENMASK(DSS_IRQ_VP_BIT_N((ch), 3), DSS_IRQ_VP_BIT_N((ch), 0));
+}
+
+static inline dispc_irq_t DSS_IRQ_PLANE_MASK(u32 plane)
+{
+ return GENMASK(DSS_IRQ_PLANE_BIT_N((plane), 0),
+ DSS_IRQ_PLANE_BIT_N((plane), 0));
+}
+
+#define DSS_IRQ_VP_FRAME_DONE(ch) DSS_IRQ_VP_BIT((ch), 0)
+#define DSS_IRQ_VP_VSYNC_EVEN(ch) DSS_IRQ_VP_BIT((ch), 1)
+#define DSS_IRQ_VP_VSYNC_ODD(ch) DSS_IRQ_VP_BIT((ch), 2)
+#define DSS_IRQ_VP_SYNC_LOST(ch) DSS_IRQ_VP_BIT((ch), 3)
+
+#define DSS_IRQ_PLANE_FIFO_UNDERFLOW(plane) DSS_IRQ_PLANE_BIT((plane), 0)
+
+struct drm_crtc;
+struct drm_device;
+
+struct tidss_device;
+
+void tidss_irq_enable_vblank(struct drm_crtc *crtc);
+void tidss_irq_disable_vblank(struct drm_crtc *crtc);
+
+void tidss_irq_preinstall(struct drm_device *ddev);
+int tidss_irq_postinstall(struct drm_device *ddev);
+void tidss_irq_uninstall(struct drm_device *ddev);
+irqreturn_t tidss_irq_handler(int irq, void *arg);
+
+void tidss_irq_resume(struct tidss_device *tidss);
+
+#endif