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                 uint32_t old_irqmask);
  35 };
  36
  37 struct mdp_kms {
  38         struct msm_kms base;
  39
  40         const struct mdp_kms_funcs *funcs;
  41
  42         /* irq handling: */
  43         bool in_irq;
  44         struct list_head irq_list;    /* list of mdp4_irq */
  45         uint32_t vblank_mask;         /* irq bits set for userspace vblank */
  46         uint32_t cur_irq_mask;        /* current irq mask */
  47 };
  48 #define to_mdp_kms(x) container_of(x, struct mdp_kms, base)
  49
  50 static inline void mdp_kms_init(struct mdp_kms *mdp_kms,
  51                 const struct mdp_kms_funcs *funcs)
  52 {
  53         mdp_kms->funcs = funcs;
  54         INIT_LIST_HEAD(&mdp_kms->irq_list);
  55         msm_kms_init(&mdp_kms->base, &funcs->base);
  56 }
  57
  58 /*
  59  * irq helpers:
  60  */
  61
  62 /* For transiently registering for different MDP irqs that various parts
  63  * of the KMS code need during setup/configuration.  These are not
  64  * necessarily the same as what drm_vblank_get/put() are requesting, and
  65  * the hysteresis in drm_vblank_put() is not necessarily desirable for
  66  * internal housekeeping related irq usage.
  67  */
  68 struct mdp_irq {
  69         struct list_head node;
  70         uint32_t irqmask;
  71         bool registered;
  72         void (*irq)(struct mdp_irq *irq, uint32_t irqstatus);
  73 };
  74
  75 void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
  76 void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
  77 void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
  78 void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
  79 void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
  80 void mdp_irq_update(struct mdp_kms *mdp_kms);
  81
  82 /*
  83  * pixel format helpers:
  84  */
  85
  86 struct mdp_format {
  87         struct msm_format base;
  88         enum mdp_bpc bpc_r, bpc_g, bpc_b;
  89         enum mdp_bpc_alpha bpc_a;
  90         uint8_t unpack[4];
  91         bool alpha_enable, unpack_tight;
  92         uint8_t cpp, unpack_count;
  93         enum mdp_fetch_type fetch_type;
  94         enum mdp_chroma_samp_type chroma_sample;
  95         bool is_yuv;
  96 };
  97 #define to_mdp_format(x) container_of(x, struct mdp_format, base)
  98 #define MDP_FORMAT_IS_YUV(mdp_format) ((mdp_format)->is_yuv)
  99
 100 uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
 101 const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format);
 102
 103 /* MDP capabilities */
 104 #define MDP_CAP_SMP             BIT(0)  /* Shared Memory Pool                 */
 105 #define MDP_CAP_DSC             BIT(1)  /* VESA Display Stream Compression    */
 106 #define MDP_CAP_CDM             BIT(2)  /* Chroma Down Module (HDMI 2.0 YUV)  */
 107
 108 /* MDP pipe capabilities */
 109 #define MDP_PIPE_CAP_HFLIP                      BIT(0)
 110 #define MDP_PIPE_CAP_VFLIP                      BIT(1)
 111 #define MDP_PIPE_CAP_SCALE                      BIT(2)
 112 #define MDP_PIPE_CAP_CSC                        BIT(3)
 113 #define MDP_PIPE_CAP_DECIMATION                 BIT(4)
 114 #define MDP_PIPE_CAP_SW_PIX_EXT                 BIT(5)
 115
 116 static inline bool pipe_supports_yuv(uint32_t pipe_caps)
 117 {
 118         return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
 119                 (pipe_caps & MDP_PIPE_CAP_CSC);
 120 }
 121
 122 enum csc_type {
 123         CSC_RGB2RGB = 0,
 124         CSC_YUV2RGB,
 125         CSC_RGB2YUV,
 126         CSC_YUV2YUV,
 127         CSC_MAX
 128 };
 129
 130 struct csc_cfg {
 131         enum csc_type type;
 132         uint32_t matrix[9];
 133         uint32_t pre_bias[3];
 134         uint32_t post_bias[3];
 135         uint32_t pre_clamp[6];
 136         uint32_t post_clamp[6];
 137 };
 138
 139 struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
 140
 141 #endif /* __MDP_KMS_H__ */