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 = OCP error 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_OCP_ERR BIT(0) 30 31 #define DSS_IRQ_DEVICE_FRAMEDONEWB BIT(1) 32 #define DSS_IRQ_DEVICE_WBBUFFEROVERFLOW BIT(2) 33 #define DSS_IRQ_DEVICE_WBUNCOMPLETEERROR BIT(3) 34 #define DSS_IRQ_DEVICE_WB_MASK GENMASK(3, 1) 35 36 #define DSS_IRQ_VP_BIT_N(ch, bit) (4 + 4 * (ch) + (bit)) 37 #define DSS_IRQ_PLANE_BIT_N(plane, bit) \ 38 (DSS_IRQ_VP_BIT_N(TIDSS_MAX_PORTS, 0) + 1 * (plane) + (bit)) 39 40 #define DSS_IRQ_VP_BIT(ch, bit) BIT(DSS_IRQ_VP_BIT_N((ch), (bit))) 41 #define DSS_IRQ_PLANE_BIT(plane, bit) \ 42 BIT(DSS_IRQ_PLANE_BIT_N((plane), (bit))) 43 44 static inline dispc_irq_t DSS_IRQ_VP_MASK(u32 ch) 45 { 46 return GENMASK(DSS_IRQ_VP_BIT_N((ch), 3), DSS_IRQ_VP_BIT_N((ch), 0)); 47 } 48 49 static inline dispc_irq_t DSS_IRQ_PLANE_MASK(u32 plane) 50 { 51 return GENMASK(DSS_IRQ_PLANE_BIT_N((plane), 0), 52 DSS_IRQ_PLANE_BIT_N((plane), 0)); 53 } 54 55 #define DSS_IRQ_VP_FRAME_DONE(ch) DSS_IRQ_VP_BIT((ch), 0) 56 #define DSS_IRQ_VP_VSYNC_EVEN(ch) DSS_IRQ_VP_BIT((ch), 1) 57 #define DSS_IRQ_VP_VSYNC_ODD(ch) DSS_IRQ_VP_BIT((ch), 2) 58 #define DSS_IRQ_VP_SYNC_LOST(ch) DSS_IRQ_VP_BIT((ch), 3) 59 60 #define DSS_IRQ_PLANE_FIFO_UNDERFLOW(plane) DSS_IRQ_PLANE_BIT((plane), 0) 61 62 struct drm_crtc; 63 struct drm_device; 64 65 struct tidss_device; 66 67 void tidss_irq_enable_vblank(struct drm_crtc *crtc); 68 void tidss_irq_disable_vblank(struct drm_crtc *crtc); 69 70 void tidss_irq_preinstall(struct drm_device *ddev); 71 int tidss_irq_postinstall(struct drm_device *ddev); 72 void tidss_irq_uninstall(struct drm_device *ddev); 73 irqreturn_t tidss_irq_handler(int irq, void *arg); 74 75 void tidss_irq_resume(struct tidss_device *tidss); 76 77 #endif 78