/* SPDX-License-Identifier: MIT */
/*
 * Copyright © 2022 Intel Corporation
 */

#ifndef __INTEL_DISPLAY_LIMITS_H__
#define __INTEL_DISPLAY_LIMITS_H__

/*
 * Keep the pipe enum values fixed: the code assumes that PIPE_A=0, the
 * rest have consecutive values and match the enum values of transcoders
 * with a 1:1 transcoder -> pipe mapping.
 */
enum pipe {
        INVALID_PIPE = -1,

        PIPE_A = 0,
        PIPE_B,
        PIPE_C,
        PIPE_D,
        _PIPE_EDP,

        I915_MAX_PIPES = _PIPE_EDP
};

enum transcoder {
        INVALID_TRANSCODER = -1,
        /*
         * The following transcoders have a 1:1 transcoder -> pipe mapping,
         * keep their values fixed: the code assumes that TRANSCODER_A=0, the
         * rest have consecutive values and match the enum values of the pipes
         * they map to.
         */
        TRANSCODER_A = PIPE_A,
        TRANSCODER_B = PIPE_B,
        TRANSCODER_C = PIPE_C,
        TRANSCODER_D = PIPE_D,

        /*
         * The following transcoders can map to any pipe, their enum value
         * doesn't need to stay fixed.
         */
        TRANSCODER_EDP,
        TRANSCODER_DSI_0,
        TRANSCODER_DSI_1,
        TRANSCODER_DSI_A = TRANSCODER_DSI_0,    /* legacy DSI */
        TRANSCODER_DSI_C = TRANSCODER_DSI_1,    /* legacy DSI */

        I915_MAX_TRANSCODERS
};

/*
 * Global legacy plane identifier. Valid only for primary/sprite
 * planes on pre-g4x, and only for primary planes on g4x-bdw.
 */
enum i9xx_plane_id {
        PLANE_A,
        PLANE_B,
        PLANE_C,
};

/*
 * Per-pipe plane identifier.
 * I915_MAX_PLANES in the enum below is the maximum (across all platforms)
 * number of planes per CRTC.  Not all platforms really have this many planes,
 * which means some arrays of size I915_MAX_PLANES may have unused entries
 * between the topmost sprite plane and the cursor plane.
 *
 * This is expected to be passed to various register macros
 * (eg. PLANE_CTL(), PS_PLANE_SEL(), etc.) so adjust with care.
 */
enum plane_id {
        /* skl+ universal plane names */
        PLANE_1,
        PLANE_2,
        PLANE_3,
        PLANE_4,
        PLANE_5,
        PLANE_6,
        PLANE_7,

        PLANE_CURSOR,

        I915_MAX_PLANES,

        /* pre-skl plane names */
        PLANE_PRIMARY = PLANE_1,
        PLANE_SPRITE0,
        PLANE_SPRITE1,
};

enum port {
        PORT_NONE = -1,

        PORT_A = 0,
        PORT_B,
        PORT_C,
        PORT_D,
        PORT_E,
        PORT_F,
        PORT_G,
        PORT_H,
        PORT_I,

        /* tgl+ */
        PORT_TC1 = PORT_D,
        PORT_TC2,
        PORT_TC3,
        PORT_TC4,
        PORT_TC5,
        PORT_TC6,

        /* XE_LPD repositions D/E offsets and bitfields */
        PORT_D_XELPD = PORT_TC5,
        PORT_E_XELPD,

        I915_MAX_PORTS
};

enum hpd_pin {
        HPD_NONE = 0,
        HPD_TV = HPD_NONE,     /* TV is known to be unreliable */
        HPD_CRT,
        HPD_SDVO_B,
        HPD_SDVO_C,
        HPD_PORT_A,
        HPD_PORT_B,
        HPD_PORT_C,
        HPD_PORT_D,
        HPD_PORT_E,
        HPD_PORT_TC1,
        HPD_PORT_TC2,
        HPD_PORT_TC3,
        HPD_PORT_TC4,
        HPD_PORT_TC5,
        HPD_PORT_TC6,

        HPD_NUM_PINS
};

#endif /* __INTEL_DISPLAY_LIMITS_H__ */