1 /* 2 * Copyright (C) 2013 Red Hat 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __MSM_KMS_H__ 19 #define __MSM_KMS_H__ 20 21 #include <linux/clk.h> 22 #include <linux/regulator/consumer.h> 23 24 #include "msm_drv.h" 25 26 #define MAX_PLANE 4 27 28 /* As there are different display controller blocks depending on the 29 * snapdragon version, the kms support is split out and the appropriate 30 * implementation is loaded at runtime. The kms module is responsible 31 * for constructing the appropriate planes/crtcs/encoders/connectors. 32 */ 33 struct msm_kms_funcs { 34 /* hw initialization: */ 35 int (*hw_init)(struct msm_kms *kms); 36 /* irq handling: */ 37 void (*irq_preinstall)(struct msm_kms *kms); 38 int (*irq_postinstall)(struct msm_kms *kms); 39 void (*irq_uninstall)(struct msm_kms *kms); 40 irqreturn_t (*irq)(struct msm_kms *kms); 41 int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc); 42 void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc); 43 /* swap global atomic state: */ 44 void (*swap_state)(struct msm_kms *kms, struct drm_atomic_state *state); 45 /* modeset, bracketing atomic_commit(): */ 46 void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state); 47 void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state); 48 /* functions to wait for atomic commit completed on each CRTC */ 49 void (*wait_for_crtc_commit_done)(struct msm_kms *kms, 50 struct drm_crtc *crtc); 51 /* misc: */ 52 const struct msm_format *(*get_format)(struct msm_kms *kms, uint32_t format); 53 long (*round_pixclk)(struct msm_kms *kms, unsigned long rate, 54 struct drm_encoder *encoder); 55 int (*set_split_display)(struct msm_kms *kms, 56 struct drm_encoder *encoder, 57 struct drm_encoder *slave_encoder, 58 bool is_cmd_mode); 59 /* cleanup: */ 60 void (*destroy)(struct msm_kms *kms); 61 #ifdef CONFIG_DEBUG_FS 62 /* debugfs: */ 63 int (*debugfs_init)(struct msm_kms *kms, struct drm_minor *minor); 64 void (*debugfs_cleanup)(struct msm_kms *kms, struct drm_minor *minor); 65 #endif 66 }; 67 68 struct msm_kms { 69 const struct msm_kms_funcs *funcs; 70 71 /* irq number to be passed on to drm_irq_install */ 72 int irq; 73 }; 74 75 /** 76 * Subclass of drm_atomic_state, to allow kms backend to have driver 77 * private global state. The kms backend can do whatever it wants 78 * with the ->state ptr. On ->atomic_state_clear() the ->state ptr 79 * is kfree'd and set back to NULL. 80 */ 81 struct msm_kms_state { 82 struct drm_atomic_state base; 83 void *state; 84 }; 85 #define to_kms_state(x) container_of(x, struct msm_kms_state, base) 86 87 static inline void msm_kms_init(struct msm_kms *kms, 88 const struct msm_kms_funcs *funcs) 89 { 90 kms->funcs = funcs; 91 } 92 93 struct msm_kms *mdp4_kms_init(struct drm_device *dev); 94 struct msm_kms *mdp5_kms_init(struct drm_device *dev); 95 int msm_mdss_init(struct drm_device *dev); 96 void msm_mdss_destroy(struct drm_device *dev); 97 98 #endif /* __MSM_KMS_H__ */ 99