1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/ 4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> 5 */ 6 7 #ifndef __TIDSS_IRQ_H__ 8 #define __TIDSS_IRQ_H__ 9 10 #include <linux/types.h> 11 12 #include "tidss_drv.h" 13 14 /* 15 * The IRQ status from various DISPC IRQ registers are packed into a single 16 * value, where the bits are defined as follows: 17 * 18 * bit group |dev|wb |mrg0|mrg1|mrg2|mrg3|plane0-3| <unused> | 19 * bit use |D |fou|FEOL|FEOL|FEOL|FEOL| UUUU | | 20 * bit number|0 |1-3|4-7 |8-11| 12-19 | 20-23 | 24-31 | 21 * 22 * device bits: D = Unused 23 * WB bits: f = frame done wb, o = wb buffer overflow, 24 * u = wb buffer uncomplete 25 * vp bits: F = frame done, E = vsync even, O = vsync odd, L = sync lost 26 * plane bits: U = fifo underflow 27 */ 28 29 #define DSS_IRQ_DEVICE_FRAMEDONEWB BIT(1) 30 #define DSS_IRQ_DEVICE_WBBUFFEROVERFLOW BIT(2) 31 #define DSS_IRQ_DEVICE_WBUNCOMPLETEERROR BIT(3) 32 #define DSS_IRQ_DEVICE_WB_MASK GENMASK(3, 1) 33 34 #define DSS_IRQ_VP_BIT_N(ch, bit) (4 + 4 * (ch) + (bit)) 35 #define DSS_IRQ_PLANE_BIT_N(plane, bit) \ 36 (DSS_IRQ_VP_BIT_N(TIDSS_MAX_PORTS, 0) + 1 * (plane) + (bit)) 37 38 #define DSS_IRQ_VP_BIT(ch, bit) BIT(DSS_IRQ_VP_BIT_N((ch), (bit))) 39 #define DSS_IRQ_PLANE_BIT(plane, bit) \ 40 BIT(DSS_IRQ_PLANE_BIT_N((plane), (bit))) 41 42 static inline dispc_irq_t DSS_IRQ_VP_MASK(u32 ch) 43 { 44 return GENMASK(DSS_IRQ_VP_BIT_N((ch), 3), DSS_IRQ_VP_BIT_N((ch), 0)); 45 } 46 47 static inline dispc_irq_t DSS_IRQ_PLANE_MASK(u32 plane) 48 { 49 return GENMASK(DSS_IRQ_PLANE_BIT_N((plane), 0), 50 DSS_IRQ_PLANE_BIT_N((plane), 0)); 51 } 52 53 #define DSS_IRQ_VP_FRAME_DONE(ch) DSS_IRQ_VP_BIT((ch), 0) 54 #define DSS_IRQ_VP_VSYNC_EVEN(ch) DSS_IRQ_VP_BIT((ch), 1) 55 #define DSS_IRQ_VP_VSYNC_ODD(ch) DSS_IRQ_VP_BIT((ch), 2) 56 #define DSS_IRQ_VP_SYNC_LOST(ch) DSS_IRQ_VP_BIT((ch), 3) 57 58 #define DSS_IRQ_PLANE_FIFO_UNDERFLOW(plane) DSS_IRQ_PLANE_BIT((plane), 0) 59 60 struct drm_crtc; 61 struct drm_device; 62 63 struct tidss_device; 64 65 void tidss_irq_enable_vblank(struct drm_crtc *crtc); 66 void tidss_irq_disable_vblank(struct drm_crtc *crtc); 67 68 int tidss_irq_install(struct drm_device *ddev, unsigned int irq); 69 void tidss_irq_uninstall(struct drm_device *ddev); 70 71 void tidss_irq_resume(struct tidss_device *tidss); 72 73 #endif 74