drivers/gpu/drm/msm/mdp/mdp_kms.h

   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 __MDP_KMS_H__
  19 #define __MDP_KMS_H__
  20
  21 #include <linux/clk.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/regulator/consumer.h>
  24
  25 #include "msm_drv.h"
  26 #include "msm_kms.h"
  27 #include "mdp_common.xml.h"
  28
  29 struct mdp_kms;
  30
  31 struct mdp_kms_funcs {
  32         struct msm_kms_funcs base;
  33         void (*set_irqmask)(struct mdp_kms *mdp_kms, uint32_t irqmask);
  34 };
  35
  36 struct mdp_kms {
  37         struct msm_kms base;
  38
  39         const struct mdp_kms_funcs *funcs;
  40
  41         /* irq handling: */
  42         bool in_irq;
  43         struct list_head irq_list;    /* list of mdp4_irq */
  44         uint32_t vblank_mask;         /* irq bits set for userspace vblank */
  45 };
  46 #define to_mdp_kms(x) container_of(x, struct mdp_kms, base)
  47
  48 static inline void mdp_kms_init(struct mdp_kms *mdp_kms,
  49                 const struct mdp_kms_funcs *funcs)
  50 {
  51         mdp_kms->funcs = funcs;
  52         INIT_LIST_HEAD(&mdp_kms->irq_list);
  53         msm_kms_init(&mdp_kms->base, &funcs->base);
  54 }
  55
  56 /*
  57  * irq helpers:
  58  */
  59
  60 /* For transiently registering for different MDP irqs that various parts
  61  * of the KMS code need during setup/configuration.  These are not
  62  * necessarily the same as what drm_vblank_get/put() are requesting, and
  63  * the hysteresis in drm_vblank_put() is not necessarily desirable for
  64  * internal housekeeping related irq usage.
  65  */
  66 struct mdp_irq {
  67         struct list_head node;
  68         uint32_t irqmask;
  69         bool registered;
  70         void (*irq)(struct mdp_irq *irq, uint32_t irqstatus);
  71 };
  72
  73 void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
  74 void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
  75 void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
  76 void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
  77 void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
  78 void mdp_irq_update(struct mdp_kms *mdp_kms);
  79
  80 /*
  81  * pixel format helpers:
  82  */
  83
  84 struct mdp_format {
  85         struct msm_format base;
  86         enum mdp_bpc bpc_r, bpc_g, bpc_b;
  87         enum mdp_bpc_alpha bpc_a;
  88         uint8_t unpack[4];
  89         bool alpha_enable, unpack_tight;
  90         uint8_t cpp, unpack_count;
  91 };
  92 #define to_mdp_format(x) container_of(x, struct mdp_format, base)
  93
  94 uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats);
  95 const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format);
  96
  97 #endif /* __MDP_KMS_H__ */