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, uint64_t modifier);
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__ */