LXR linux/drivers/gpu/drm/msm/mdp/mdp

   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
  29struct mdp_kms;
  30
  31struct 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
  37struct 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
  50static 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 */
  68struct 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
  75void mdp_dispatch_irqs(struct mdp_kms *mdp_kms, uint32_t status);
  76void mdp_update_vblank_mask(struct mdp_kms *mdp_kms, uint32_t mask, bool enable);
  77void mdp_irq_wait(struct mdp_kms *mdp_kms, uint32_t irqmask);
  78void mdp_irq_register(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
  79void mdp_irq_unregister(struct mdp_kms *mdp_kms, struct mdp_irq *irq);
  80void mdp_irq_update(struct mdp_kms *mdp_kms);
  81
  82/*
  83 * pixel format helpers:
  84 */
  85
  86struct 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
 100uint32_t mdp_get_formats(uint32_t *formats, uint32_t max_formats, bool rgb_only);
 101const 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#define MDP_CAP_SRC_SPLIT       BIT(3)  /* Source Split of SSPPs */
 108
 109/* MDP pipe capabilities */
 110#define MDP_PIPE_CAP_HFLIP                      BIT(0)
 111#define MDP_PIPE_CAP_VFLIP                      BIT(1)
 112#define MDP_PIPE_CAP_SCALE                      BIT(2)
 113#define MDP_PIPE_CAP_CSC                        BIT(3)
 114#define MDP_PIPE_CAP_DECIMATION                 BIT(4)
 115#define MDP_PIPE_CAP_SW_PIX_EXT                 BIT(5)
 116#define MDP_PIPE_CAP_CURSOR                     BIT(6)
 117
 118/* MDP layer mixer caps */
 119#define MDP_LM_CAP_DISPLAY                      BIT(0)
 120#define MDP_LM_CAP_WB                           BIT(1)
 121#define MDP_LM_CAP_PAIR                         BIT(2)
 122
 123static inline bool pipe_supports_yuv(uint32_t pipe_caps)
 124{
 125        return (pipe_caps & MDP_PIPE_CAP_SCALE) &&
 126                (pipe_caps & MDP_PIPE_CAP_CSC);
 127}
 128
 129enum csc_type {
 130        CSC_RGB2RGB = 0,
 131        CSC_YUV2RGB,
 132        CSC_RGB2YUV,
 133        CSC_YUV2YUV,
 134        CSC_MAX
 135};
 136
 137struct csc_cfg {
 138        enum csc_type type;
 139        uint32_t matrix[9];
 140        uint32_t pre_bias[3];
 141        uint32_t post_bias[3];
 142        uint32_t pre_clamp[6];
 143        uint32_t post_clamp[6];
 144};
 145
 146struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type);
 147
 148#endif /* __MDP_KMS_H__ */
 149